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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> |
96260142 | 34 | #include <linux/sync_file.h> |
cc4ceb48 | 35 | |
be35f94f TR |
36 | #include "drm_crtc_internal.h" |
37 | ||
3b24f7d6 DV |
38 | static void crtc_commit_free(struct kref *kref) |
39 | { | |
40 | struct drm_crtc_commit *commit = | |
41 | container_of(kref, struct drm_crtc_commit, ref); | |
42 | ||
43 | kfree(commit); | |
44 | } | |
45 | ||
46 | void drm_crtc_commit_put(struct drm_crtc_commit *commit) | |
47 | { | |
48 | kref_put(&commit->ref, crtc_commit_free); | |
49 | } | |
50 | EXPORT_SYMBOL(drm_crtc_commit_put); | |
51 | ||
036ef573 ML |
52 | /** |
53 | * drm_atomic_state_default_release - | |
54 | * release memory initialized by drm_atomic_state_init | |
55 | * @state: atomic state | |
56 | * | |
57 | * Free all the memory allocated by drm_atomic_state_init. | |
58 | * This is useful for drivers that subclass the atomic state. | |
59 | */ | |
60 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
61 | { |
62 | kfree(state->connectors); | |
cc4ceb48 | 63 | kfree(state->crtcs); |
cc4ceb48 | 64 | kfree(state->planes); |
cc4ceb48 | 65 | } |
036ef573 | 66 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
67 | |
68 | /** | |
036ef573 | 69 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 70 | * @dev: DRM device |
036ef573 | 71 | * @state: atomic state |
cc4ceb48 | 72 | * |
036ef573 ML |
73 | * Default implementation for filling in a new atomic state. |
74 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 75 | */ |
036ef573 ML |
76 | int |
77 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 78 | { |
0853695c CW |
79 | kref_init(&state->ref); |
80 | ||
d34f20d6 RC |
81 | /* TODO legacy paths should maybe do a better job about |
82 | * setting this appropriately? | |
83 | */ | |
84 | state->allow_modeset = true; | |
85 | ||
cc4ceb48 DV |
86 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
87 | sizeof(*state->crtcs), GFP_KERNEL); | |
88 | if (!state->crtcs) | |
89 | goto fail; | |
cc4ceb48 DV |
90 | state->planes = kcalloc(dev->mode_config.num_total_plane, |
91 | sizeof(*state->planes), GFP_KERNEL); | |
92 | if (!state->planes) | |
93 | goto fail; | |
cc4ceb48 DV |
94 | |
95 | state->dev = dev; | |
96 | ||
036ef573 | 97 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 98 | |
036ef573 | 99 | return 0; |
cc4ceb48 | 100 | fail: |
036ef573 ML |
101 | drm_atomic_state_default_release(state); |
102 | return -ENOMEM; | |
103 | } | |
104 | EXPORT_SYMBOL(drm_atomic_state_init); | |
105 | ||
106 | /** | |
107 | * drm_atomic_state_alloc - allocate atomic state | |
108 | * @dev: DRM device | |
109 | * | |
110 | * This allocates an empty atomic state to track updates. | |
111 | */ | |
112 | struct drm_atomic_state * | |
113 | drm_atomic_state_alloc(struct drm_device *dev) | |
114 | { | |
115 | struct drm_mode_config *config = &dev->mode_config; | |
116 | struct drm_atomic_state *state; | |
117 | ||
118 | if (!config->funcs->atomic_state_alloc) { | |
119 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
120 | if (!state) | |
121 | return NULL; | |
122 | if (drm_atomic_state_init(dev, state) < 0) { | |
123 | kfree(state); | |
124 | return NULL; | |
125 | } | |
126 | return state; | |
127 | } | |
cc4ceb48 | 128 | |
036ef573 | 129 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
130 | } |
131 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
132 | ||
133 | /** | |
036ef573 | 134 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
135 | * @state: atomic state |
136 | * | |
036ef573 ML |
137 | * Default implementation for clearing atomic state. |
138 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 139 | */ |
036ef573 | 140 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
141 | { |
142 | struct drm_device *dev = state->dev; | |
6f75cea6 | 143 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
144 | int i; |
145 | ||
17a38d9c | 146 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 147 | |
f52b69f1 | 148 | for (i = 0; i < state->num_connector; i++) { |
63e83c1d | 149 | struct drm_connector *connector = state->connectors[i].ptr; |
cc4ceb48 DV |
150 | |
151 | if (!connector) | |
152 | continue; | |
153 | ||
d2307dea | 154 | connector->funcs->atomic_destroy_state(connector, |
63e83c1d DV |
155 | state->connectors[i].state); |
156 | state->connectors[i].ptr = NULL; | |
157 | state->connectors[i].state = NULL; | |
b164d31f | 158 | drm_connector_unreference(connector); |
cc4ceb48 DV |
159 | } |
160 | ||
6f75cea6 | 161 | for (i = 0; i < config->num_crtc; i++) { |
5d943aa6 | 162 | struct drm_crtc *crtc = state->crtcs[i].ptr; |
cc4ceb48 DV |
163 | |
164 | if (!crtc) | |
165 | continue; | |
166 | ||
167 | crtc->funcs->atomic_destroy_state(crtc, | |
5d943aa6 | 168 | state->crtcs[i].state); |
3b24f7d6 DV |
169 | |
170 | if (state->crtcs[i].commit) { | |
171 | kfree(state->crtcs[i].commit->event); | |
172 | state->crtcs[i].commit->event = NULL; | |
173 | drm_crtc_commit_put(state->crtcs[i].commit); | |
174 | } | |
175 | ||
176 | state->crtcs[i].commit = NULL; | |
5d943aa6 DV |
177 | state->crtcs[i].ptr = NULL; |
178 | state->crtcs[i].state = NULL; | |
cc4ceb48 DV |
179 | } |
180 | ||
6f75cea6 | 181 | for (i = 0; i < config->num_total_plane; i++) { |
b8b5342b | 182 | struct drm_plane *plane = state->planes[i].ptr; |
cc4ceb48 DV |
183 | |
184 | if (!plane) | |
185 | continue; | |
186 | ||
187 | plane->funcs->atomic_destroy_state(plane, | |
b8b5342b DV |
188 | state->planes[i].state); |
189 | state->planes[i].ptr = NULL; | |
190 | state->planes[i].state = NULL; | |
cc4ceb48 DV |
191 | } |
192 | } | |
036ef573 ML |
193 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
194 | ||
195 | /** | |
196 | * drm_atomic_state_clear - clear state object | |
197 | * @state: atomic state | |
198 | * | |
199 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
200 | * all locks. So someone else could sneak in and change the current modeset | |
201 | * configuration. Which means that all the state assembled in @state is no | |
202 | * longer an atomic update to the current state, but to some arbitrary earlier | |
203 | * state. Which could break assumptions the driver's ->atomic_check likely | |
204 | * relies on. | |
205 | * | |
206 | * Hence we must clear all cached state and completely start over, using this | |
207 | * function. | |
208 | */ | |
209 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
210 | { | |
211 | struct drm_device *dev = state->dev; | |
212 | struct drm_mode_config *config = &dev->mode_config; | |
213 | ||
214 | if (config->funcs->atomic_state_clear) | |
215 | config->funcs->atomic_state_clear(state); | |
216 | else | |
217 | drm_atomic_state_default_clear(state); | |
218 | } | |
cc4ceb48 DV |
219 | EXPORT_SYMBOL(drm_atomic_state_clear); |
220 | ||
221 | /** | |
0853695c CW |
222 | * __drm_atomic_state_free - free all memory for an atomic state |
223 | * @ref: This atomic state to deallocate | |
cc4ceb48 DV |
224 | * |
225 | * This frees all memory associated with an atomic state, including all the | |
226 | * per-object state for planes, crtcs and connectors. | |
227 | */ | |
0853695c | 228 | void __drm_atomic_state_free(struct kref *ref) |
cc4ceb48 | 229 | { |
0853695c CW |
230 | struct drm_atomic_state *state = container_of(ref, typeof(*state), ref); |
231 | struct drm_mode_config *config = &state->dev->mode_config; | |
036ef573 | 232 | |
cc4ceb48 DV |
233 | drm_atomic_state_clear(state); |
234 | ||
17a38d9c | 235 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 236 | |
036ef573 ML |
237 | if (config->funcs->atomic_state_free) { |
238 | config->funcs->atomic_state_free(state); | |
239 | } else { | |
240 | drm_atomic_state_default_release(state); | |
241 | kfree(state); | |
242 | } | |
cc4ceb48 | 243 | } |
0853695c | 244 | EXPORT_SYMBOL(__drm_atomic_state_free); |
cc4ceb48 DV |
245 | |
246 | /** | |
247 | * drm_atomic_get_crtc_state - get crtc state | |
248 | * @state: global atomic state object | |
249 | * @crtc: crtc to get state object for | |
250 | * | |
251 | * This function returns the crtc state for the given crtc, allocating it if | |
252 | * needed. It will also grab the relevant crtc lock to make sure that the state | |
253 | * is consistent. | |
254 | * | |
255 | * Returns: | |
256 | * | |
257 | * Either the allocated state or the error code encoded into the pointer. When | |
258 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
259 | * entire atomic sequence must be restarted. All other errors are fatal. | |
260 | */ | |
261 | struct drm_crtc_state * | |
262 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
263 | struct drm_crtc *crtc) | |
264 | { | |
1b26a5e1 | 265 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
266 | struct drm_crtc_state *crtc_state; |
267 | ||
7f4eaa89 ML |
268 | WARN_ON(!state->acquire_ctx); |
269 | ||
1b26a5e1 ML |
270 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
271 | if (crtc_state) | |
272 | return crtc_state; | |
cc4ceb48 DV |
273 | |
274 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
275 | if (ret) | |
276 | return ERR_PTR(ret); | |
277 | ||
278 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
279 | if (!crtc_state) | |
280 | return ERR_PTR(-ENOMEM); | |
281 | ||
5d943aa6 DV |
282 | state->crtcs[index].state = crtc_state; |
283 | state->crtcs[index].ptr = crtc; | |
cc4ceb48 DV |
284 | crtc_state->state = state; |
285 | ||
fa3ab4c2 VS |
286 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
287 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
288 | |
289 | return crtc_state; | |
290 | } | |
291 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
292 | ||
beaf5af4 GP |
293 | static void set_out_fence_for_crtc(struct drm_atomic_state *state, |
294 | struct drm_crtc *crtc, s64 __user *fence_ptr) | |
295 | { | |
296 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr; | |
297 | } | |
298 | ||
299 | static s64 __user *get_out_fence_for_crtc(struct drm_atomic_state *state, | |
300 | struct drm_crtc *crtc) | |
301 | { | |
302 | s64 __user *fence_ptr; | |
303 | ||
304 | fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr; | |
305 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL; | |
306 | ||
307 | return fence_ptr; | |
308 | } | |
309 | ||
819364da DS |
310 | /** |
311 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
312 | * @state: the CRTC whose incoming state to update | |
313 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
314 | * | |
315 | * Set a mode (originating from the kernel) on the desired CRTC state. Does | |
316 | * not change any other state properties, including enable, active, or | |
317 | * mode_changed. | |
318 | * | |
319 | * RETURNS: | |
320 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
321 | */ | |
322 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
323 | struct drm_display_mode *mode) | |
324 | { | |
99cf4a29 DS |
325 | struct drm_mode_modeinfo umode; |
326 | ||
819364da DS |
327 | /* Early return for no change. */ |
328 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
329 | return 0; | |
330 | ||
5f911905 | 331 | drm_property_unreference_blob(state->mode_blob); |
99cf4a29 DS |
332 | state->mode_blob = NULL; |
333 | ||
819364da | 334 | if (mode) { |
99cf4a29 DS |
335 | drm_mode_convert_to_umode(&umode, mode); |
336 | state->mode_blob = | |
337 | drm_property_create_blob(state->crtc->dev, | |
338 | sizeof(umode), | |
339 | &umode); | |
340 | if (IS_ERR(state->mode_blob)) | |
341 | return PTR_ERR(state->mode_blob); | |
342 | ||
819364da DS |
343 | drm_mode_copy(&state->mode, mode); |
344 | state->enable = true; | |
345 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
346 | mode->name, state); | |
347 | } else { | |
348 | memset(&state->mode, 0, sizeof(state->mode)); | |
349 | state->enable = false; | |
350 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
351 | state); | |
352 | } | |
353 | ||
354 | return 0; | |
355 | } | |
356 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
357 | ||
955f3c33 DS |
358 | /** |
359 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
360 | * @state: the CRTC whose incoming state to update | |
361 | * @blob: pointer to blob property to use for mode | |
362 | * | |
363 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
364 | * This function will take a reference on the blob property for the CRTC state, | |
365 | * and release the reference held on the state's existing mode property, if any | |
366 | * was set. | |
367 | * | |
368 | * RETURNS: | |
369 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
370 | */ | |
371 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
372 | struct drm_property_blob *blob) | |
373 | { | |
374 | if (blob == state->mode_blob) | |
375 | return 0; | |
376 | ||
5f911905 | 377 | drm_property_unreference_blob(state->mode_blob); |
955f3c33 DS |
378 | state->mode_blob = NULL; |
379 | ||
6709887c TV |
380 | memset(&state->mode, 0, sizeof(state->mode)); |
381 | ||
955f3c33 DS |
382 | if (blob) { |
383 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
384 | drm_mode_convert_umode(&state->mode, | |
385 | (const struct drm_mode_modeinfo *) | |
386 | blob->data)) | |
387 | return -EINVAL; | |
388 | ||
389 | state->mode_blob = drm_property_reference_blob(blob); | |
390 | state->enable = true; | |
391 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
392 | state->mode.name, state); | |
393 | } else { | |
955f3c33 DS |
394 | state->enable = false; |
395 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
396 | state); | |
397 | } | |
398 | ||
399 | return 0; | |
400 | } | |
401 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
402 | ||
5488dc16 LL |
403 | /** |
404 | * drm_atomic_replace_property_blob - replace a blob property | |
405 | * @blob: a pointer to the member blob to be replaced | |
406 | * @new_blob: the new blob to replace with | |
5488dc16 LL |
407 | * @replaced: whether the blob has been replaced |
408 | * | |
409 | * RETURNS: | |
410 | * Zero on success, error code on failure | |
411 | */ | |
412 | static void | |
413 | drm_atomic_replace_property_blob(struct drm_property_blob **blob, | |
414 | struct drm_property_blob *new_blob, | |
415 | bool *replaced) | |
416 | { | |
417 | struct drm_property_blob *old_blob = *blob; | |
418 | ||
419 | if (old_blob == new_blob) | |
420 | return; | |
421 | ||
f35cbe6a | 422 | drm_property_unreference_blob(old_blob); |
5488dc16 LL |
423 | if (new_blob) |
424 | drm_property_reference_blob(new_blob); | |
425 | *blob = new_blob; | |
426 | *replaced = true; | |
427 | ||
428 | return; | |
429 | } | |
430 | ||
431 | static int | |
432 | drm_atomic_replace_property_blob_from_id(struct drm_crtc *crtc, | |
433 | struct drm_property_blob **blob, | |
434 | uint64_t blob_id, | |
435 | ssize_t expected_size, | |
436 | bool *replaced) | |
437 | { | |
5488dc16 LL |
438 | struct drm_property_blob *new_blob = NULL; |
439 | ||
440 | if (blob_id != 0) { | |
cac5fced | 441 | new_blob = drm_property_lookup_blob(crtc->dev, blob_id); |
5488dc16 LL |
442 | if (new_blob == NULL) |
443 | return -EINVAL; | |
cac5fced FM |
444 | |
445 | if (expected_size > 0 && expected_size != new_blob->length) { | |
446 | drm_property_unreference_blob(new_blob); | |
5488dc16 | 447 | return -EINVAL; |
cac5fced | 448 | } |
5488dc16 LL |
449 | } |
450 | ||
451 | drm_atomic_replace_property_blob(blob, new_blob, replaced); | |
cac5fced | 452 | drm_property_unreference_blob(new_blob); |
5488dc16 LL |
453 | |
454 | return 0; | |
455 | } | |
456 | ||
40ecc694 RC |
457 | /** |
458 | * drm_atomic_crtc_set_property - set property on CRTC | |
459 | * @crtc: the drm CRTC to set a property on | |
460 | * @state: the state object to update with the new property value | |
461 | * @property: the property to set | |
462 | * @val: the new property value | |
463 | * | |
464 | * Use this instead of calling crtc->atomic_set_property directly. | |
465 | * This function handles generic/core properties and calls out to | |
466 | * driver's ->atomic_set_property() for driver properties. To ensure | |
467 | * consistent behavior you must call this function rather than the | |
468 | * driver hook directly. | |
469 | * | |
470 | * RETURNS: | |
471 | * Zero on success, error code on failure | |
472 | */ | |
473 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
474 | struct drm_crtc_state *state, struct drm_property *property, | |
475 | uint64_t val) | |
476 | { | |
eab3bbef DV |
477 | struct drm_device *dev = crtc->dev; |
478 | struct drm_mode_config *config = &dev->mode_config; | |
5488dc16 | 479 | bool replaced = false; |
955f3c33 | 480 | int ret; |
eab3bbef | 481 | |
27798365 | 482 | if (property == config->prop_active) |
eab3bbef | 483 | state->active = val; |
955f3c33 DS |
484 | else if (property == config->prop_mode_id) { |
485 | struct drm_property_blob *mode = | |
486 | drm_property_lookup_blob(dev, val); | |
487 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
5f911905 | 488 | drm_property_unreference_blob(mode); |
955f3c33 | 489 | return ret; |
5488dc16 LL |
490 | } else if (property == config->degamma_lut_property) { |
491 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
492 | &state->degamma_lut, | |
493 | val, | |
494 | -1, | |
495 | &replaced); | |
add1fa75 | 496 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
497 | return ret; |
498 | } else if (property == config->ctm_property) { | |
499 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
500 | &state->ctm, | |
501 | val, | |
502 | sizeof(struct drm_color_ctm), | |
503 | &replaced); | |
add1fa75 | 504 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
505 | return ret; |
506 | } else if (property == config->gamma_lut_property) { | |
507 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
508 | &state->gamma_lut, | |
509 | val, | |
510 | -1, | |
511 | &replaced); | |
add1fa75 | 512 | state->color_mgmt_changed |= replaced; |
5488dc16 | 513 | return ret; |
beaf5af4 GP |
514 | } else if (property == config->prop_out_fence_ptr) { |
515 | s64 __user *fence_ptr = u64_to_user_ptr(val); | |
516 | ||
517 | if (!fence_ptr) | |
518 | return 0; | |
519 | ||
520 | if (put_user(-1, fence_ptr)) | |
521 | return -EFAULT; | |
522 | ||
523 | set_out_fence_for_crtc(state->state, crtc, fence_ptr); | |
5488dc16 | 524 | } else if (crtc->funcs->atomic_set_property) |
40ecc694 | 525 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
27798365 DS |
526 | else |
527 | return -EINVAL; | |
528 | ||
529 | return 0; | |
40ecc694 RC |
530 | } |
531 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
532 | ||
c0714fc9 DV |
533 | /** |
534 | * drm_atomic_crtc_get_property - get property value from CRTC state | |
535 | * @crtc: the drm CRTC to set a property on | |
536 | * @state: the state object to get the property value from | |
537 | * @property: the property to set | |
538 | * @val: return location for the property value | |
539 | * | |
ac9c9256 RC |
540 | * This function handles generic/core properties and calls out to |
541 | * driver's ->atomic_get_property() for driver properties. To ensure | |
542 | * consistent behavior you must call this function rather than the | |
543 | * driver hook directly. | |
c0714fc9 DV |
544 | * |
545 | * RETURNS: | |
546 | * Zero on success, error code on failure | |
ac9c9256 | 547 | */ |
bf22f3be GT |
548 | static int |
549 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
ac9c9256 RC |
550 | const struct drm_crtc_state *state, |
551 | struct drm_property *property, uint64_t *val) | |
552 | { | |
8f164ce4 DS |
553 | struct drm_device *dev = crtc->dev; |
554 | struct drm_mode_config *config = &dev->mode_config; | |
555 | ||
556 | if (property == config->prop_active) | |
557 | *val = state->active; | |
955f3c33 DS |
558 | else if (property == config->prop_mode_id) |
559 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
5488dc16 LL |
560 | else if (property == config->degamma_lut_property) |
561 | *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; | |
562 | else if (property == config->ctm_property) | |
563 | *val = (state->ctm) ? state->ctm->base.id : 0; | |
564 | else if (property == config->gamma_lut_property) | |
565 | *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; | |
beaf5af4 GP |
566 | else if (property == config->prop_out_fence_ptr) |
567 | *val = 0; | |
8f164ce4 | 568 | else if (crtc->funcs->atomic_get_property) |
ac9c9256 | 569 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
8f164ce4 DS |
570 | else |
571 | return -EINVAL; | |
572 | ||
573 | return 0; | |
ac9c9256 | 574 | } |
ac9c9256 | 575 | |
5e743737 RC |
576 | /** |
577 | * drm_atomic_crtc_check - check crtc state | |
578 | * @crtc: crtc to check | |
579 | * @state: crtc state to check | |
580 | * | |
581 | * Provides core sanity checks for crtc state. | |
582 | * | |
583 | * RETURNS: | |
584 | * Zero on success, error code on failure | |
585 | */ | |
586 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
587 | struct drm_crtc_state *state) | |
588 | { | |
589 | /* NOTE: we explicitly don't enforce constraints such as primary | |
590 | * layer covering entire screen, since that is something we want | |
591 | * to allow (on hw that supports it). For hw that does not, it | |
592 | * should be checked in driver's crtc->atomic_check() vfunc. | |
593 | * | |
594 | * TODO: Add generic modeset state checks once we support those. | |
595 | */ | |
eab3bbef DV |
596 | |
597 | if (state->active && !state->enable) { | |
fa3ab4c2 VS |
598 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
599 | crtc->base.id, crtc->name); | |
eab3bbef DV |
600 | return -EINVAL; |
601 | } | |
602 | ||
99cf4a29 DS |
603 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
604 | * as this is a kernel-internal detail that userspace should never | |
605 | * be able to trigger. */ | |
606 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
607 | WARN_ON(state->enable && !state->mode_blob)) { | |
fa3ab4c2 VS |
608 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
609 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
610 | return -EINVAL; |
611 | } | |
612 | ||
613 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
614 | WARN_ON(!state->enable && state->mode_blob)) { | |
fa3ab4c2 VS |
615 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
616 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
617 | return -EINVAL; |
618 | } | |
619 | ||
4cba6850 DV |
620 | /* |
621 | * Reject event generation for when a CRTC is off and stays off. | |
622 | * It wouldn't be hard to implement this, but userspace has a track | |
623 | * record of happily burning through 100% cpu (or worse, crash) when the | |
624 | * display pipe is suspended. To avoid all that fun just reject updates | |
625 | * that ask for events since likely that indicates a bug in the | |
626 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
627 | * and legacy page_flip IOCTL which also reject service on a disabled | |
628 | * pipe. | |
629 | */ | |
630 | if (state->event && !state->active && !crtc->state->active) { | |
631 | DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n", | |
632 | crtc->base.id); | |
633 | return -EINVAL; | |
634 | } | |
635 | ||
5e743737 RC |
636 | return 0; |
637 | } | |
638 | ||
fceffb32 RC |
639 | static void drm_atomic_crtc_print_state(struct drm_printer *p, |
640 | const struct drm_crtc_state *state) | |
641 | { | |
642 | struct drm_crtc *crtc = state->crtc; | |
643 | ||
644 | drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name); | |
645 | drm_printf(p, "\tenable=%d\n", state->enable); | |
646 | drm_printf(p, "\tactive=%d\n", state->active); | |
647 | drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed); | |
648 | drm_printf(p, "\tmode_changed=%d\n", state->mode_changed); | |
649 | drm_printf(p, "\tactive_changed=%d\n", state->active_changed); | |
650 | drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed); | |
651 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); | |
652 | drm_printf(p, "\tplane_mask=%x\n", state->plane_mask); | |
653 | drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask); | |
654 | drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask); | |
655 | drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode)); | |
656 | ||
657 | if (crtc->funcs->atomic_print_state) | |
658 | crtc->funcs->atomic_print_state(p, state); | |
659 | } | |
660 | ||
cc4ceb48 DV |
661 | /** |
662 | * drm_atomic_get_plane_state - get plane state | |
663 | * @state: global atomic state object | |
664 | * @plane: plane to get state object for | |
665 | * | |
666 | * This function returns the plane state for the given plane, allocating it if | |
667 | * needed. It will also grab the relevant plane lock to make sure that the state | |
668 | * is consistent. | |
669 | * | |
670 | * Returns: | |
671 | * | |
672 | * Either the allocated state or the error code encoded into the pointer. When | |
673 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
674 | * entire atomic sequence must be restarted. All other errors are fatal. | |
675 | */ | |
676 | struct drm_plane_state * | |
677 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
678 | struct drm_plane *plane) | |
679 | { | |
1b26a5e1 | 680 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
681 | struct drm_plane_state *plane_state; |
682 | ||
7f4eaa89 ML |
683 | WARN_ON(!state->acquire_ctx); |
684 | ||
1b26a5e1 ML |
685 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
686 | if (plane_state) | |
687 | return plane_state; | |
cc4ceb48 | 688 | |
4d02e2de | 689 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
690 | if (ret) |
691 | return ERR_PTR(ret); | |
692 | ||
693 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
694 | if (!plane_state) | |
695 | return ERR_PTR(-ENOMEM); | |
696 | ||
b8b5342b DV |
697 | state->planes[index].state = plane_state; |
698 | state->planes[index].ptr = plane; | |
cc4ceb48 DV |
699 | plane_state->state = state; |
700 | ||
9f4c97a2 VS |
701 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
702 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
703 | |
704 | if (plane_state->crtc) { | |
705 | struct drm_crtc_state *crtc_state; | |
706 | ||
707 | crtc_state = drm_atomic_get_crtc_state(state, | |
708 | plane_state->crtc); | |
709 | if (IS_ERR(crtc_state)) | |
710 | return ERR_CAST(crtc_state); | |
711 | } | |
712 | ||
713 | return plane_state; | |
714 | } | |
715 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
716 | ||
40ecc694 RC |
717 | /** |
718 | * drm_atomic_plane_set_property - set property on plane | |
719 | * @plane: the drm plane to set a property on | |
720 | * @state: the state object to update with the new property value | |
721 | * @property: the property to set | |
722 | * @val: the new property value | |
723 | * | |
724 | * Use this instead of calling plane->atomic_set_property directly. | |
725 | * This function handles generic/core properties and calls out to | |
726 | * driver's ->atomic_set_property() for driver properties. To ensure | |
727 | * consistent behavior you must call this function rather than the | |
728 | * driver hook directly. | |
729 | * | |
730 | * RETURNS: | |
731 | * Zero on success, error code on failure | |
732 | */ | |
733 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
734 | struct drm_plane_state *state, struct drm_property *property, | |
735 | uint64_t val) | |
736 | { | |
6b4959f4 RC |
737 | struct drm_device *dev = plane->dev; |
738 | struct drm_mode_config *config = &dev->mode_config; | |
739 | ||
740 | if (property == config->prop_fb_id) { | |
741 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
742 | drm_atomic_set_fb_for_plane(state, fb); | |
743 | if (fb) | |
744 | drm_framebuffer_unreference(fb); | |
96260142 GP |
745 | } else if (property == config->prop_in_fence_fd) { |
746 | if (state->fence) | |
747 | return -EINVAL; | |
748 | ||
749 | if (U642I64(val) == -1) | |
750 | return 0; | |
751 | ||
752 | state->fence = sync_file_get_fence(val); | |
753 | if (!state->fence) | |
754 | return -EINVAL; | |
755 | ||
6b4959f4 RC |
756 | } else if (property == config->prop_crtc_id) { |
757 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
758 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
759 | } else if (property == config->prop_crtc_x) { | |
760 | state->crtc_x = U642I64(val); | |
761 | } else if (property == config->prop_crtc_y) { | |
762 | state->crtc_y = U642I64(val); | |
763 | } else if (property == config->prop_crtc_w) { | |
764 | state->crtc_w = val; | |
765 | } else if (property == config->prop_crtc_h) { | |
766 | state->crtc_h = val; | |
767 | } else if (property == config->prop_src_x) { | |
768 | state->src_x = val; | |
769 | } else if (property == config->prop_src_y) { | |
770 | state->src_y = val; | |
771 | } else if (property == config->prop_src_w) { | |
772 | state->src_w = val; | |
773 | } else if (property == config->prop_src_h) { | |
774 | state->src_h = val; | |
6686df8c | 775 | } else if (property == plane->rotation_property) { |
6e0c7c33 VS |
776 | if (!is_power_of_2(val & DRM_ROTATE_MASK)) |
777 | return -EINVAL; | |
1da30627 | 778 | state->rotation = val; |
44d1240d MS |
779 | } else if (property == plane->zpos_property) { |
780 | state->zpos = val; | |
6b4959f4 RC |
781 | } else if (plane->funcs->atomic_set_property) { |
782 | return plane->funcs->atomic_set_property(plane, state, | |
783 | property, val); | |
784 | } else { | |
785 | return -EINVAL; | |
786 | } | |
787 | ||
788 | return 0; | |
40ecc694 RC |
789 | } |
790 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
791 | ||
c0714fc9 DV |
792 | /** |
793 | * drm_atomic_plane_get_property - get property value from plane state | |
794 | * @plane: the drm plane to set a property on | |
795 | * @state: the state object to get the property value from | |
796 | * @property: the property to set | |
797 | * @val: return location for the property value | |
798 | * | |
ac9c9256 RC |
799 | * This function handles generic/core properties and calls out to |
800 | * driver's ->atomic_get_property() for driver properties. To ensure | |
801 | * consistent behavior you must call this function rather than the | |
802 | * driver hook directly. | |
c0714fc9 DV |
803 | * |
804 | * RETURNS: | |
805 | * Zero on success, error code on failure | |
ac9c9256 | 806 | */ |
a97df1cc DV |
807 | static int |
808 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
809 | const struct drm_plane_state *state, |
810 | struct drm_property *property, uint64_t *val) | |
811 | { | |
6b4959f4 RC |
812 | struct drm_device *dev = plane->dev; |
813 | struct drm_mode_config *config = &dev->mode_config; | |
814 | ||
815 | if (property == config->prop_fb_id) { | |
816 | *val = (state->fb) ? state->fb->base.id : 0; | |
96260142 GP |
817 | } else if (property == config->prop_in_fence_fd) { |
818 | *val = -1; | |
6b4959f4 RC |
819 | } else if (property == config->prop_crtc_id) { |
820 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
821 | } else if (property == config->prop_crtc_x) { | |
822 | *val = I642U64(state->crtc_x); | |
823 | } else if (property == config->prop_crtc_y) { | |
824 | *val = I642U64(state->crtc_y); | |
825 | } else if (property == config->prop_crtc_w) { | |
826 | *val = state->crtc_w; | |
827 | } else if (property == config->prop_crtc_h) { | |
828 | *val = state->crtc_h; | |
829 | } else if (property == config->prop_src_x) { | |
830 | *val = state->src_x; | |
831 | } else if (property == config->prop_src_y) { | |
832 | *val = state->src_y; | |
833 | } else if (property == config->prop_src_w) { | |
834 | *val = state->src_w; | |
835 | } else if (property == config->prop_src_h) { | |
836 | *val = state->src_h; | |
6686df8c | 837 | } else if (property == plane->rotation_property) { |
4cda09ca | 838 | *val = state->rotation; |
44d1240d MS |
839 | } else if (property == plane->zpos_property) { |
840 | *val = state->zpos; | |
6b4959f4 | 841 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 842 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
843 | } else { |
844 | return -EINVAL; | |
845 | } | |
846 | ||
847 | return 0; | |
ac9c9256 | 848 | } |
ac9c9256 | 849 | |
f8aeb41c DV |
850 | static bool |
851 | plane_switching_crtc(struct drm_atomic_state *state, | |
852 | struct drm_plane *plane, | |
853 | struct drm_plane_state *plane_state) | |
854 | { | |
855 | if (!plane->state->crtc || !plane_state->crtc) | |
856 | return false; | |
857 | ||
858 | if (plane->state->crtc == plane_state->crtc) | |
859 | return false; | |
860 | ||
861 | /* This could be refined, but currently there's no helper or driver code | |
862 | * to implement direct switching of active planes nor userspace to take | |
863 | * advantage of more direct plane switching without the intermediate | |
864 | * full OFF state. | |
865 | */ | |
866 | return true; | |
867 | } | |
868 | ||
5e743737 RC |
869 | /** |
870 | * drm_atomic_plane_check - check plane state | |
871 | * @plane: plane to check | |
872 | * @state: plane state to check | |
873 | * | |
874 | * Provides core sanity checks for plane state. | |
875 | * | |
876 | * RETURNS: | |
877 | * Zero on success, error code on failure | |
878 | */ | |
879 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
880 | struct drm_plane_state *state) | |
881 | { | |
882 | unsigned int fb_width, fb_height; | |
ead8610d | 883 | int ret; |
5e743737 RC |
884 | |
885 | /* either *both* CRTC and FB must be set, or neither */ | |
886 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 887 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
888 | return -EINVAL; |
889 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 890 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
891 | return -EINVAL; |
892 | } | |
893 | ||
894 | /* if disabled, we don't care about the rest of the state: */ | |
895 | if (!state->crtc) | |
896 | return 0; | |
897 | ||
898 | /* Check whether this plane is usable on this CRTC */ | |
899 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 900 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
901 | return -EINVAL; |
902 | } | |
903 | ||
904 | /* Check whether this plane supports the fb pixel format. */ | |
438b74a5 | 905 | ret = drm_plane_check_pixel_format(plane, state->fb->format->format); |
ead8610d | 906 | if (ret) { |
b3c11ac2 EE |
907 | struct drm_format_name_buf format_name; |
908 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", | |
438b74a5 | 909 | drm_get_format_name(state->fb->format->format, |
b3c11ac2 | 910 | &format_name)); |
ead8610d | 911 | return ret; |
5e743737 RC |
912 | } |
913 | ||
914 | /* Give drivers some help against integer overflows */ | |
915 | if (state->crtc_w > INT_MAX || | |
916 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
917 | state->crtc_h > INT_MAX || | |
918 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
919 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
920 | state->crtc_w, state->crtc_h, | |
921 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
922 | return -ERANGE; |
923 | } | |
924 | ||
925 | fb_width = state->fb->width << 16; | |
926 | fb_height = state->fb->height << 16; | |
927 | ||
928 | /* Make sure source coordinates are inside the fb. */ | |
929 | if (state->src_w > fb_width || | |
930 | state->src_x > fb_width - state->src_w || | |
931 | state->src_h > fb_height || | |
932 | state->src_y > fb_height - state->src_h) { | |
17a38d9c DV |
933 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
934 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
935 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
936 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
937 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
938 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
5e743737 RC |
939 | return -ENOSPC; |
940 | } | |
941 | ||
f8aeb41c | 942 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
943 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
944 | plane->base.id, plane->name); | |
f8aeb41c DV |
945 | return -EINVAL; |
946 | } | |
947 | ||
5e743737 RC |
948 | return 0; |
949 | } | |
950 | ||
fceffb32 RC |
951 | static void drm_atomic_plane_print_state(struct drm_printer *p, |
952 | const struct drm_plane_state *state) | |
953 | { | |
954 | struct drm_plane *plane = state->plane; | |
955 | struct drm_rect src = drm_plane_state_src(state); | |
956 | struct drm_rect dest = drm_plane_state_dest(state); | |
957 | ||
958 | drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name); | |
959 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
960 | drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0); | |
961 | if (state->fb) { | |
962 | struct drm_framebuffer *fb = state->fb; | |
bcb0b461 | 963 | int i, n = fb->format->num_planes; |
b3c11ac2 | 964 | struct drm_format_name_buf format_name; |
fceffb32 RC |
965 | |
966 | drm_printf(p, "\t\tformat=%s\n", | |
438b74a5 | 967 | drm_get_format_name(fb->format->format, &format_name)); |
bae781b2 | 968 | drm_printf(p, "\t\t\tmodifier=0x%llx\n", fb->modifier); |
fceffb32 RC |
969 | drm_printf(p, "\t\tsize=%dx%d\n", fb->width, fb->height); |
970 | drm_printf(p, "\t\tlayers:\n"); | |
971 | for (i = 0; i < n; i++) { | |
972 | drm_printf(p, "\t\t\tpitch[%d]=%u\n", i, fb->pitches[i]); | |
973 | drm_printf(p, "\t\t\toffset[%d]=%u\n", i, fb->offsets[i]); | |
fceffb32 RC |
974 | } |
975 | } | |
976 | drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest)); | |
977 | drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src)); | |
978 | drm_printf(p, "\trotation=%x\n", state->rotation); | |
979 | ||
980 | if (plane->funcs->atomic_print_state) | |
981 | plane->funcs->atomic_print_state(p, state); | |
982 | } | |
983 | ||
cc4ceb48 DV |
984 | /** |
985 | * drm_atomic_get_connector_state - get connector state | |
986 | * @state: global atomic state object | |
987 | * @connector: connector to get state object for | |
988 | * | |
989 | * This function returns the connector state for the given connector, | |
990 | * allocating it if needed. It will also grab the relevant connector lock to | |
991 | * make sure that the state is consistent. | |
992 | * | |
993 | * Returns: | |
994 | * | |
995 | * Either the allocated state or the error code encoded into the pointer. When | |
996 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
997 | * entire atomic sequence must be restarted. All other errors are fatal. | |
998 | */ | |
999 | struct drm_connector_state * | |
1000 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
1001 | struct drm_connector *connector) | |
1002 | { | |
1003 | int ret, index; | |
1004 | struct drm_mode_config *config = &connector->dev->mode_config; | |
1005 | struct drm_connector_state *connector_state; | |
1006 | ||
7f4eaa89 ML |
1007 | WARN_ON(!state->acquire_ctx); |
1008 | ||
c7eb76f4 DV |
1009 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1010 | if (ret) | |
1011 | return ERR_PTR(ret); | |
1012 | ||
cc4ceb48 DV |
1013 | index = drm_connector_index(connector); |
1014 | ||
f52b69f1 | 1015 | if (index >= state->num_connector) { |
63e83c1d | 1016 | struct __drm_connnectors_state *c; |
5fff80bb ML |
1017 | int alloc = max(index + 1, config->num_connector); |
1018 | ||
1019 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
1020 | if (!c) | |
1021 | return ERR_PTR(-ENOMEM); | |
1022 | ||
1023 | state->connectors = c; | |
1024 | memset(&state->connectors[state->num_connector], 0, | |
1025 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
1026 | ||
5fff80bb | 1027 | state->num_connector = alloc; |
f52b69f1 DV |
1028 | } |
1029 | ||
63e83c1d DV |
1030 | if (state->connectors[index].state) |
1031 | return state->connectors[index].state; | |
cc4ceb48 | 1032 | |
cc4ceb48 DV |
1033 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
1034 | if (!connector_state) | |
1035 | return ERR_PTR(-ENOMEM); | |
1036 | ||
b164d31f | 1037 | drm_connector_reference(connector); |
63e83c1d DV |
1038 | state->connectors[index].state = connector_state; |
1039 | state->connectors[index].ptr = connector; | |
cc4ceb48 DV |
1040 | connector_state->state = state; |
1041 | ||
17a38d9c DV |
1042 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n", |
1043 | connector->base.id, connector_state, state); | |
cc4ceb48 DV |
1044 | |
1045 | if (connector_state->crtc) { | |
1046 | struct drm_crtc_state *crtc_state; | |
1047 | ||
1048 | crtc_state = drm_atomic_get_crtc_state(state, | |
1049 | connector_state->crtc); | |
1050 | if (IS_ERR(crtc_state)) | |
1051 | return ERR_CAST(crtc_state); | |
1052 | } | |
1053 | ||
1054 | return connector_state; | |
1055 | } | |
1056 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
1057 | ||
40ecc694 RC |
1058 | /** |
1059 | * drm_atomic_connector_set_property - set property on connector. | |
1060 | * @connector: the drm connector to set a property on | |
1061 | * @state: the state object to update with the new property value | |
1062 | * @property: the property to set | |
1063 | * @val: the new property value | |
1064 | * | |
1065 | * Use this instead of calling connector->atomic_set_property directly. | |
1066 | * This function handles generic/core properties and calls out to | |
1067 | * driver's ->atomic_set_property() for driver properties. To ensure | |
1068 | * consistent behavior you must call this function rather than the | |
1069 | * driver hook directly. | |
1070 | * | |
1071 | * RETURNS: | |
1072 | * Zero on success, error code on failure | |
1073 | */ | |
1074 | int drm_atomic_connector_set_property(struct drm_connector *connector, | |
1075 | struct drm_connector_state *state, struct drm_property *property, | |
1076 | uint64_t val) | |
1077 | { | |
1078 | struct drm_device *dev = connector->dev; | |
1079 | struct drm_mode_config *config = &dev->mode_config; | |
1080 | ||
ae16c597 RC |
1081 | if (property == config->prop_crtc_id) { |
1082 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
1083 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
1084 | } else if (property == config->dpms_property) { | |
40ecc694 RC |
1085 | /* setting DPMS property requires special handling, which |
1086 | * is done in legacy setprop path for us. Disallow (for | |
1087 | * now?) atomic writes to DPMS property: | |
1088 | */ | |
1089 | return -EINVAL; | |
299a16b1 BB |
1090 | } else if (property == config->tv_select_subconnector_property) { |
1091 | state->tv.subconnector = val; | |
1092 | } else if (property == config->tv_left_margin_property) { | |
1093 | state->tv.margins.left = val; | |
1094 | } else if (property == config->tv_right_margin_property) { | |
1095 | state->tv.margins.right = val; | |
1096 | } else if (property == config->tv_top_margin_property) { | |
1097 | state->tv.margins.top = val; | |
1098 | } else if (property == config->tv_bottom_margin_property) { | |
1099 | state->tv.margins.bottom = val; | |
1100 | } else if (property == config->tv_mode_property) { | |
1101 | state->tv.mode = val; | |
1102 | } else if (property == config->tv_brightness_property) { | |
1103 | state->tv.brightness = val; | |
1104 | } else if (property == config->tv_contrast_property) { | |
1105 | state->tv.contrast = val; | |
1106 | } else if (property == config->tv_flicker_reduction_property) { | |
1107 | state->tv.flicker_reduction = val; | |
1108 | } else if (property == config->tv_overscan_property) { | |
1109 | state->tv.overscan = val; | |
1110 | } else if (property == config->tv_saturation_property) { | |
1111 | state->tv.saturation = val; | |
1112 | } else if (property == config->tv_hue_property) { | |
1113 | state->tv.hue = val; | |
40ecc694 RC |
1114 | } else if (connector->funcs->atomic_set_property) { |
1115 | return connector->funcs->atomic_set_property(connector, | |
1116 | state, property, val); | |
1117 | } else { | |
1118 | return -EINVAL; | |
1119 | } | |
299a16b1 BB |
1120 | |
1121 | return 0; | |
40ecc694 RC |
1122 | } |
1123 | EXPORT_SYMBOL(drm_atomic_connector_set_property); | |
1124 | ||
fceffb32 RC |
1125 | static void drm_atomic_connector_print_state(struct drm_printer *p, |
1126 | const struct drm_connector_state *state) | |
1127 | { | |
1128 | struct drm_connector *connector = state->connector; | |
1129 | ||
1130 | drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name); | |
1131 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
1132 | ||
1133 | if (connector->funcs->atomic_print_state) | |
1134 | connector->funcs->atomic_print_state(p, state); | |
1135 | } | |
1136 | ||
c0714fc9 DV |
1137 | /** |
1138 | * drm_atomic_connector_get_property - get property value from connector state | |
1139 | * @connector: the drm connector to set a property on | |
1140 | * @state: the state object to get the property value from | |
1141 | * @property: the property to set | |
1142 | * @val: return location for the property value | |
1143 | * | |
ac9c9256 RC |
1144 | * This function handles generic/core properties and calls out to |
1145 | * driver's ->atomic_get_property() for driver properties. To ensure | |
1146 | * consistent behavior you must call this function rather than the | |
1147 | * driver hook directly. | |
c0714fc9 DV |
1148 | * |
1149 | * RETURNS: | |
1150 | * Zero on success, error code on failure | |
ac9c9256 | 1151 | */ |
a97df1cc DV |
1152 | static int |
1153 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
ac9c9256 RC |
1154 | const struct drm_connector_state *state, |
1155 | struct drm_property *property, uint64_t *val) | |
1156 | { | |
1157 | struct drm_device *dev = connector->dev; | |
1158 | struct drm_mode_config *config = &dev->mode_config; | |
1159 | ||
ae16c597 RC |
1160 | if (property == config->prop_crtc_id) { |
1161 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
1162 | } else if (property == config->dpms_property) { | |
ac9c9256 | 1163 | *val = connector->dpms; |
299a16b1 BB |
1164 | } else if (property == config->tv_select_subconnector_property) { |
1165 | *val = state->tv.subconnector; | |
1166 | } else if (property == config->tv_left_margin_property) { | |
1167 | *val = state->tv.margins.left; | |
1168 | } else if (property == config->tv_right_margin_property) { | |
1169 | *val = state->tv.margins.right; | |
1170 | } else if (property == config->tv_top_margin_property) { | |
1171 | *val = state->tv.margins.top; | |
1172 | } else if (property == config->tv_bottom_margin_property) { | |
1173 | *val = state->tv.margins.bottom; | |
1174 | } else if (property == config->tv_mode_property) { | |
1175 | *val = state->tv.mode; | |
1176 | } else if (property == config->tv_brightness_property) { | |
1177 | *val = state->tv.brightness; | |
1178 | } else if (property == config->tv_contrast_property) { | |
1179 | *val = state->tv.contrast; | |
1180 | } else if (property == config->tv_flicker_reduction_property) { | |
1181 | *val = state->tv.flicker_reduction; | |
1182 | } else if (property == config->tv_overscan_property) { | |
1183 | *val = state->tv.overscan; | |
1184 | } else if (property == config->tv_saturation_property) { | |
1185 | *val = state->tv.saturation; | |
1186 | } else if (property == config->tv_hue_property) { | |
1187 | *val = state->tv.hue; | |
ac9c9256 RC |
1188 | } else if (connector->funcs->atomic_get_property) { |
1189 | return connector->funcs->atomic_get_property(connector, | |
1190 | state, property, val); | |
1191 | } else { | |
1192 | return -EINVAL; | |
1193 | } | |
1194 | ||
1195 | return 0; | |
1196 | } | |
ac9c9256 | 1197 | |
88a48e29 RC |
1198 | int drm_atomic_get_property(struct drm_mode_object *obj, |
1199 | struct drm_property *property, uint64_t *val) | |
1200 | { | |
1201 | struct drm_device *dev = property->dev; | |
1202 | int ret; | |
1203 | ||
1204 | switch (obj->type) { | |
1205 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1206 | struct drm_connector *connector = obj_to_connector(obj); | |
1207 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
1208 | ret = drm_atomic_connector_get_property(connector, | |
1209 | connector->state, property, val); | |
1210 | break; | |
1211 | } | |
1212 | case DRM_MODE_OBJECT_CRTC: { | |
1213 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1214 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
1215 | ret = drm_atomic_crtc_get_property(crtc, | |
1216 | crtc->state, property, val); | |
1217 | break; | |
1218 | } | |
1219 | case DRM_MODE_OBJECT_PLANE: { | |
1220 | struct drm_plane *plane = obj_to_plane(obj); | |
1221 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
1222 | ret = drm_atomic_plane_get_property(plane, | |
1223 | plane->state, property, val); | |
1224 | break; | |
1225 | } | |
1226 | default: | |
1227 | ret = -EINVAL; | |
1228 | break; | |
1229 | } | |
1230 | ||
1231 | return ret; | |
1232 | } | |
1233 | ||
cc4ceb48 DV |
1234 | /** |
1235 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
07cc0ef6 | 1236 | * @plane_state: the plane whose incoming state to update |
cc4ceb48 DV |
1237 | * @crtc: crtc to use for the plane |
1238 | * | |
1239 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
1240 | * for the new crtc, as needed. This function takes care of all these details | |
1241 | * besides updating the pointer in the state object itself. | |
1242 | * | |
1243 | * Returns: | |
1244 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1245 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1246 | * sequence must be restarted. All other errors are fatal. | |
1247 | */ | |
1248 | int | |
07cc0ef6 DV |
1249 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
1250 | struct drm_crtc *crtc) | |
cc4ceb48 | 1251 | { |
07cc0ef6 | 1252 | struct drm_plane *plane = plane_state->plane; |
cc4ceb48 DV |
1253 | struct drm_crtc_state *crtc_state; |
1254 | ||
6ddd388a RC |
1255 | if (plane_state->crtc) { |
1256 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1257 | plane_state->crtc); | |
1258 | if (WARN_ON(IS_ERR(crtc_state))) | |
1259 | return PTR_ERR(crtc_state); | |
1260 | ||
1261 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
1262 | } | |
1263 | ||
1264 | plane_state->crtc = crtc; | |
1265 | ||
cc4ceb48 DV |
1266 | if (crtc) { |
1267 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1268 | crtc); | |
1269 | if (IS_ERR(crtc_state)) | |
1270 | return PTR_ERR(crtc_state); | |
6ddd388a | 1271 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
cc4ceb48 DV |
1272 | } |
1273 | ||
cc4ceb48 | 1274 | if (crtc) |
fa3ab4c2 VS |
1275 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1276 | plane_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1277 | else |
17a38d9c DV |
1278 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1279 | plane_state); | |
cc4ceb48 DV |
1280 | |
1281 | return 0; | |
1282 | } | |
1283 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1284 | ||
321ebf04 | 1285 | /** |
16d78bc2 | 1286 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
321ebf04 DV |
1287 | * @plane_state: atomic state object for the plane |
1288 | * @fb: fb to use for the plane | |
1289 | * | |
1290 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1291 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1292 | * function takes care of all these details besides updating the pointer in the | |
1293 | * state object itself. | |
1294 | */ | |
1295 | void | |
1296 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1297 | struct drm_framebuffer *fb) | |
1298 | { | |
321ebf04 | 1299 | if (fb) |
17a38d9c DV |
1300 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1301 | fb->base.id, plane_state); | |
321ebf04 | 1302 | else |
17a38d9c DV |
1303 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1304 | plane_state); | |
389f78b3 CW |
1305 | |
1306 | drm_framebuffer_assign(&plane_state->fb, fb); | |
321ebf04 DV |
1307 | } |
1308 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1309 | ||
13b55664 GP |
1310 | /** |
1311 | * drm_atomic_set_fence_for_plane - set fence for plane | |
1312 | * @plane_state: atomic state object for the plane | |
1313 | * @fence: dma_fence to use for the plane | |
1314 | * | |
1315 | * Helper to setup the plane_state fence in case it is not set yet. | |
1316 | * By using this drivers doesn't need to worry if the user choose | |
1317 | * implicit or explicit fencing. | |
1318 | * | |
1319 | * This function will not set the fence to the state if it was set | |
1320 | * via explicit fencing interfaces on the atomic ioctl. It will | |
1321 | * all drope the reference to the fence as we not storing it | |
1322 | * anywhere. | |
1323 | * | |
1324 | * Otherwise, if plane_state->fence is not set this function we | |
1325 | * just set it with the received implict fence. | |
1326 | */ | |
1327 | void | |
1328 | drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state, | |
1329 | struct dma_fence *fence) | |
1330 | { | |
1331 | if (plane_state->fence) { | |
1332 | dma_fence_put(fence); | |
1333 | return; | |
1334 | } | |
1335 | ||
1336 | plane_state->fence = fence; | |
1337 | } | |
1338 | EXPORT_SYMBOL(drm_atomic_set_fence_for_plane); | |
1339 | ||
cc4ceb48 DV |
1340 | /** |
1341 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1342 | * @conn_state: atomic state object for the connector | |
1343 | * @crtc: crtc to use for the connector | |
1344 | * | |
1345 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1346 | * state for the new crtc, as needed. This function takes care of all these | |
1347 | * details besides updating the pointer in the state object itself. | |
1348 | * | |
1349 | * Returns: | |
1350 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1351 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1352 | * sequence must be restarted. All other errors are fatal. | |
1353 | */ | |
1354 | int | |
1355 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1356 | struct drm_crtc *crtc) | |
1357 | { | |
1358 | struct drm_crtc_state *crtc_state; | |
1359 | ||
e2d800a3 CW |
1360 | if (conn_state->crtc == crtc) |
1361 | return 0; | |
1362 | ||
1363 | if (conn_state->crtc) { | |
4cd9fa52 ML |
1364 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, |
1365 | conn_state->crtc); | |
1366 | ||
1367 | crtc_state->connector_mask &= | |
1368 | ~(1 << drm_connector_index(conn_state->connector)); | |
e2d800a3 CW |
1369 | |
1370 | drm_connector_unreference(conn_state->connector); | |
1371 | conn_state->crtc = NULL; | |
4cd9fa52 ML |
1372 | } |
1373 | ||
cc4ceb48 DV |
1374 | if (crtc) { |
1375 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1376 | if (IS_ERR(crtc_state)) | |
1377 | return PTR_ERR(crtc_state); | |
4cd9fa52 ML |
1378 | |
1379 | crtc_state->connector_mask |= | |
1380 | 1 << drm_connector_index(conn_state->connector); | |
cc4ceb48 | 1381 | |
e2d800a3 CW |
1382 | drm_connector_reference(conn_state->connector); |
1383 | conn_state->crtc = crtc; | |
cc4ceb48 | 1384 | |
fa3ab4c2 VS |
1385 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1386 | conn_state, crtc->base.id, crtc->name); | |
e2d800a3 | 1387 | } else { |
17a38d9c DV |
1388 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1389 | conn_state); | |
e2d800a3 | 1390 | } |
cc4ceb48 DV |
1391 | |
1392 | return 0; | |
1393 | } | |
1394 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1395 | ||
1396 | /** | |
1397 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1398 | * @state: atomic state | |
1399 | * @crtc: DRM crtc | |
1400 | * | |
1401 | * This function walks the current configuration and adds all connectors | |
1402 | * currently using @crtc to the atomic configuration @state. Note that this | |
1403 | * function must acquire the connection mutex. This can potentially cause | |
1404 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1405 | * drivers and helpers should only call this when really needed (e.g. when a | |
1406 | * full modeset needs to happen due to some change). | |
1407 | * | |
1408 | * Returns: | |
1409 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1410 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1411 | * sequence must be restarted. All other errors are fatal. | |
1412 | */ | |
1413 | int | |
1414 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1415 | struct drm_crtc *crtc) | |
1416 | { | |
1417 | struct drm_mode_config *config = &state->dev->mode_config; | |
1418 | struct drm_connector *connector; | |
1419 | struct drm_connector_state *conn_state; | |
613051da | 1420 | struct drm_connector_list_iter conn_iter; |
cc4ceb48 DV |
1421 | int ret; |
1422 | ||
1423 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
1424 | if (ret) | |
1425 | return ret; | |
1426 | ||
fa3ab4c2 VS |
1427 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1428 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1429 | |
1430 | /* | |
1431 | * Changed connectors are already in @state, so only need to look at the | |
1432 | * current configuration. | |
1433 | */ | |
613051da DV |
1434 | drm_connector_list_iter_get(state->dev, &conn_iter); |
1435 | drm_for_each_connector_iter(connector, &conn_iter) { | |
cc4ceb48 DV |
1436 | if (connector->state->crtc != crtc) |
1437 | continue; | |
1438 | ||
1439 | conn_state = drm_atomic_get_connector_state(state, connector); | |
613051da DV |
1440 | if (IS_ERR(conn_state)) { |
1441 | drm_connector_list_iter_put(&conn_iter); | |
cc4ceb48 | 1442 | return PTR_ERR(conn_state); |
613051da | 1443 | } |
cc4ceb48 | 1444 | } |
613051da | 1445 | drm_connector_list_iter_put(&conn_iter); |
cc4ceb48 DV |
1446 | |
1447 | return 0; | |
1448 | } | |
1449 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1450 | ||
e01e9f75 ML |
1451 | /** |
1452 | * drm_atomic_add_affected_planes - add planes for crtc | |
1453 | * @state: atomic state | |
1454 | * @crtc: DRM crtc | |
1455 | * | |
1456 | * This function walks the current configuration and adds all planes | |
1457 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1458 | * when an atomic commit also needs to check all currently enabled plane on | |
1459 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1460 | * to avoid special code to force-enable all planes. | |
1461 | * | |
1462 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1463 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1464 | * a CRTC will not reduce parallism of atomic updates. | |
1465 | * | |
1466 | * Returns: | |
1467 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1468 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1469 | * sequence must be restarted. All other errors are fatal. | |
1470 | */ | |
1471 | int | |
1472 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1473 | struct drm_crtc *crtc) | |
1474 | { | |
1475 | struct drm_plane *plane; | |
1476 | ||
1477 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1478 | ||
1479 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1480 | struct drm_plane_state *plane_state = | |
1481 | drm_atomic_get_plane_state(state, plane); | |
1482 | ||
1483 | if (IS_ERR(plane_state)) | |
1484 | return PTR_ERR(plane_state); | |
1485 | } | |
1486 | return 0; | |
1487 | } | |
1488 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1489 | ||
cc4ceb48 DV |
1490 | /** |
1491 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1492 | * @state: atomic state | |
1493 | * | |
1494 | * This function should be used by legacy entry points which don't understand | |
1495 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
16d78bc2 | 1496 | * the slowpath completed. |
cc4ceb48 DV |
1497 | */ |
1498 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1499 | { | |
81e257e9 ML |
1500 | struct drm_device *dev = state->dev; |
1501 | unsigned crtc_mask = 0; | |
1502 | struct drm_crtc *crtc; | |
cc4ceb48 | 1503 | int ret; |
81e257e9 ML |
1504 | bool global = false; |
1505 | ||
1506 | drm_for_each_crtc(crtc, dev) { | |
1507 | if (crtc->acquire_ctx != state->acquire_ctx) | |
1508 | continue; | |
1509 | ||
1510 | crtc_mask |= drm_crtc_mask(crtc); | |
1511 | crtc->acquire_ctx = NULL; | |
1512 | } | |
1513 | ||
1514 | if (WARN_ON(dev->mode_config.acquire_ctx == state->acquire_ctx)) { | |
1515 | global = true; | |
1516 | ||
1517 | dev->mode_config.acquire_ctx = NULL; | |
1518 | } | |
cc4ceb48 DV |
1519 | |
1520 | retry: | |
1521 | drm_modeset_backoff(state->acquire_ctx); | |
1522 | ||
81e257e9 | 1523 | ret = drm_modeset_lock_all_ctx(dev, state->acquire_ctx); |
cc4ceb48 DV |
1524 | if (ret) |
1525 | goto retry; | |
81e257e9 ML |
1526 | |
1527 | drm_for_each_crtc(crtc, dev) | |
1528 | if (drm_crtc_mask(crtc) & crtc_mask) | |
1529 | crtc->acquire_ctx = state->acquire_ctx; | |
1530 | ||
1531 | if (global) | |
1532 | dev->mode_config.acquire_ctx = state->acquire_ctx; | |
cc4ceb48 DV |
1533 | } |
1534 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1535 | ||
1536 | /** | |
1537 | * drm_atomic_check_only - check whether a given config would work | |
1538 | * @state: atomic configuration to check | |
1539 | * | |
1540 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1541 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1542 | * backoff dance and restart. All other errors are fatal. | |
1543 | * | |
1544 | * Returns: | |
1545 | * 0 on success, negative error code on failure. | |
1546 | */ | |
1547 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1548 | { | |
5e743737 RC |
1549 | struct drm_device *dev = state->dev; |
1550 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1551 | struct drm_plane *plane; |
1552 | struct drm_plane_state *plane_state; | |
1553 | struct drm_crtc *crtc; | |
1554 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1555 | int i, ret = 0; |
cc4ceb48 | 1556 | |
17a38d9c | 1557 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1558 | |
df63b999 ACO |
1559 | for_each_plane_in_state(state, plane, plane_state, i) { |
1560 | ret = drm_atomic_plane_check(plane, plane_state); | |
5e743737 | 1561 | if (ret) { |
9f4c97a2 VS |
1562 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1563 | plane->base.id, plane->name); | |
5e743737 RC |
1564 | return ret; |
1565 | } | |
1566 | } | |
1567 | ||
df63b999 ACO |
1568 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
1569 | ret = drm_atomic_crtc_check(crtc, crtc_state); | |
5e743737 | 1570 | if (ret) { |
fa3ab4c2 VS |
1571 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1572 | crtc->base.id, crtc->name); | |
5e743737 RC |
1573 | return ret; |
1574 | } | |
1575 | } | |
1576 | ||
cc4ceb48 | 1577 | if (config->funcs->atomic_check) |
5e743737 RC |
1578 | ret = config->funcs->atomic_check(state->dev, state); |
1579 | ||
d34f20d6 | 1580 | if (!state->allow_modeset) { |
df63b999 | 1581 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1582 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1583 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1584 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1585 | return -EINVAL; |
1586 | } | |
1587 | } | |
1588 | } | |
1589 | ||
5e743737 | 1590 | return ret; |
cc4ceb48 DV |
1591 | } |
1592 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1593 | ||
1594 | /** | |
1595 | * drm_atomic_commit - commit configuration atomically | |
1596 | * @state: atomic configuration to check | |
1597 | * | |
1598 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1599 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1600 | * backoff dance and restart. All other errors are fatal. | |
1601 | * | |
1602 | * Also note that on successful execution ownership of @state is transferred | |
1603 | * from the caller of this function to the function itself. The caller must not | |
1604 | * free or in any other way access @state. If the function fails then the caller | |
1605 | * must clean up @state itself. | |
1606 | * | |
1607 | * Returns: | |
1608 | * 0 on success, negative error code on failure. | |
1609 | */ | |
1610 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1611 | { | |
1612 | struct drm_mode_config *config = &state->dev->mode_config; | |
1613 | int ret; | |
1614 | ||
1615 | ret = drm_atomic_check_only(state); | |
1616 | if (ret) | |
1617 | return ret; | |
1618 | ||
17a38d9c | 1619 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
cc4ceb48 DV |
1620 | |
1621 | return config->funcs->atomic_commit(state->dev, state, false); | |
1622 | } | |
1623 | EXPORT_SYMBOL(drm_atomic_commit); | |
1624 | ||
1625 | /** | |
b837ba0a | 1626 | * drm_atomic_nonblocking_commit - atomic&nonblocking configuration commit |
cc4ceb48 DV |
1627 | * @state: atomic configuration to check |
1628 | * | |
1629 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1630 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1631 | * backoff dance and restart. All other errors are fatal. | |
1632 | * | |
1633 | * Also note that on successful execution ownership of @state is transferred | |
1634 | * from the caller of this function to the function itself. The caller must not | |
1635 | * free or in any other way access @state. If the function fails then the caller | |
1636 | * must clean up @state itself. | |
1637 | * | |
1638 | * Returns: | |
1639 | * 0 on success, negative error code on failure. | |
1640 | */ | |
b837ba0a | 1641 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1642 | { |
1643 | struct drm_mode_config *config = &state->dev->mode_config; | |
1644 | int ret; | |
1645 | ||
1646 | ret = drm_atomic_check_only(state); | |
1647 | if (ret) | |
1648 | return ret; | |
1649 | ||
b837ba0a | 1650 | DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state); |
cc4ceb48 DV |
1651 | |
1652 | return config->funcs->atomic_commit(state->dev, state, true); | |
1653 | } | |
b837ba0a | 1654 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 | 1655 | |
fceffb32 RC |
1656 | static void drm_atomic_print_state(const struct drm_atomic_state *state) |
1657 | { | |
1658 | struct drm_printer p = drm_info_printer(state->dev->dev); | |
1659 | struct drm_plane *plane; | |
1660 | struct drm_plane_state *plane_state; | |
1661 | struct drm_crtc *crtc; | |
1662 | struct drm_crtc_state *crtc_state; | |
1663 | struct drm_connector *connector; | |
1664 | struct drm_connector_state *connector_state; | |
1665 | int i; | |
1666 | ||
1667 | DRM_DEBUG_ATOMIC("checking %p\n", state); | |
1668 | ||
1669 | for_each_plane_in_state(state, plane, plane_state, i) | |
1670 | drm_atomic_plane_print_state(&p, plane_state); | |
1671 | ||
1672 | for_each_crtc_in_state(state, crtc, crtc_state, i) | |
1673 | drm_atomic_crtc_print_state(&p, crtc_state); | |
1674 | ||
1675 | for_each_connector_in_state(state, connector, connector_state, i) | |
1676 | drm_atomic_connector_print_state(&p, connector_state); | |
1677 | } | |
1678 | ||
6559c901 RC |
1679 | /** |
1680 | * drm_state_dump - dump entire device atomic state | |
1681 | * @dev: the drm device | |
1682 | * @p: where to print the state to | |
1683 | * | |
1684 | * Just for debugging. Drivers might want an option to dump state | |
1685 | * to dmesg in case of error irq's. (Hint, you probably want to | |
1686 | * ratelimit this!) | |
1687 | * | |
1688 | * The caller must drm_modeset_lock_all(), or if this is called | |
1689 | * from error irq handler, it should not be enabled by default. | |
1690 | * (Ie. if you are debugging errors you might not care that this | |
1691 | * is racey. But calling this without all modeset locks held is | |
1692 | * not inherently safe.) | |
1693 | */ | |
1694 | void drm_state_dump(struct drm_device *dev, struct drm_printer *p) | |
1695 | { | |
1696 | struct drm_mode_config *config = &dev->mode_config; | |
1697 | struct drm_plane *plane; | |
1698 | struct drm_crtc *crtc; | |
1699 | struct drm_connector *connector; | |
613051da | 1700 | struct drm_connector_list_iter conn_iter; |
6559c901 RC |
1701 | |
1702 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1703 | return; | |
1704 | ||
1705 | list_for_each_entry(plane, &config->plane_list, head) | |
1706 | drm_atomic_plane_print_state(p, plane->state); | |
1707 | ||
1708 | list_for_each_entry(crtc, &config->crtc_list, head) | |
1709 | drm_atomic_crtc_print_state(p, crtc->state); | |
1710 | ||
613051da DV |
1711 | drm_connector_list_iter_get(dev, &conn_iter); |
1712 | drm_for_each_connector_iter(connector, &conn_iter) | |
6559c901 | 1713 | drm_atomic_connector_print_state(p, connector->state); |
613051da | 1714 | drm_connector_list_iter_put(&conn_iter); |
6559c901 RC |
1715 | } |
1716 | EXPORT_SYMBOL(drm_state_dump); | |
1717 | ||
1718 | #ifdef CONFIG_DEBUG_FS | |
1719 | static int drm_state_info(struct seq_file *m, void *data) | |
1720 | { | |
1721 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
1722 | struct drm_device *dev = node->minor->dev; | |
1723 | struct drm_printer p = drm_seq_file_printer(m); | |
1724 | ||
1725 | drm_modeset_lock_all(dev); | |
1726 | drm_state_dump(dev, &p); | |
1727 | drm_modeset_unlock_all(dev); | |
1728 | ||
1729 | return 0; | |
1730 | } | |
1731 | ||
1732 | /* any use in debugfs files to dump individual planes/crtc/etc? */ | |
1733 | static const struct drm_info_list drm_atomic_debugfs_list[] = { | |
1734 | {"state", drm_state_info, 0}, | |
1735 | }; | |
1736 | ||
1737 | int drm_atomic_debugfs_init(struct drm_minor *minor) | |
1738 | { | |
1739 | return drm_debugfs_create_files(drm_atomic_debugfs_list, | |
1740 | ARRAY_SIZE(drm_atomic_debugfs_list), | |
1741 | minor->debugfs_root, minor); | |
1742 | } | |
8c0b55e2 LD |
1743 | |
1744 | int drm_atomic_debugfs_cleanup(struct drm_minor *minor) | |
1745 | { | |
1746 | return drm_debugfs_remove_files(drm_atomic_debugfs_list, | |
1747 | ARRAY_SIZE(drm_atomic_debugfs_list), | |
1748 | minor); | |
1749 | } | |
6559c901 RC |
1750 | #endif |
1751 | ||
d34f20d6 RC |
1752 | /* |
1753 | * The big monstor ioctl | |
1754 | */ | |
1755 | ||
1756 | static struct drm_pending_vblank_event *create_vblank_event( | |
beaf5af4 | 1757 | struct drm_device *dev, uint64_t user_data) |
d34f20d6 RC |
1758 | { |
1759 | struct drm_pending_vblank_event *e = NULL; | |
d34f20d6 RC |
1760 | |
1761 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
2dd500f1 DV |
1762 | if (!e) |
1763 | return NULL; | |
d34f20d6 RC |
1764 | |
1765 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
2dd500f1 | 1766 | e->event.base.length = sizeof(e->event); |
d34f20d6 | 1767 | e->event.user_data = user_data; |
d34f20d6 | 1768 | |
2dd500f1 | 1769 | return e; |
d34f20d6 RC |
1770 | } |
1771 | ||
1772 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1773 | struct drm_mode_object *obj, struct drm_property *prop, | |
1774 | uint64_t prop_value) | |
1775 | { | |
1776 | struct drm_mode_object *ref; | |
1777 | int ret; | |
1778 | ||
1779 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1780 | return -EINVAL; | |
1781 | ||
1782 | switch (obj->type) { | |
1783 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1784 | struct drm_connector *connector = obj_to_connector(obj); | |
1785 | struct drm_connector_state *connector_state; | |
1786 | ||
1787 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1788 | if (IS_ERR(connector_state)) { | |
1789 | ret = PTR_ERR(connector_state); | |
1790 | break; | |
1791 | } | |
1792 | ||
1793 | ret = drm_atomic_connector_set_property(connector, | |
1794 | connector_state, prop, prop_value); | |
1795 | break; | |
1796 | } | |
1797 | case DRM_MODE_OBJECT_CRTC: { | |
1798 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1799 | struct drm_crtc_state *crtc_state; | |
1800 | ||
1801 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1802 | if (IS_ERR(crtc_state)) { | |
1803 | ret = PTR_ERR(crtc_state); | |
1804 | break; | |
1805 | } | |
1806 | ||
1807 | ret = drm_atomic_crtc_set_property(crtc, | |
1808 | crtc_state, prop, prop_value); | |
1809 | break; | |
1810 | } | |
1811 | case DRM_MODE_OBJECT_PLANE: { | |
1812 | struct drm_plane *plane = obj_to_plane(obj); | |
1813 | struct drm_plane_state *plane_state; | |
1814 | ||
1815 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1816 | if (IS_ERR(plane_state)) { | |
1817 | ret = PTR_ERR(plane_state); | |
1818 | break; | |
1819 | } | |
1820 | ||
1821 | ret = drm_atomic_plane_set_property(plane, | |
1822 | plane_state, prop, prop_value); | |
1823 | break; | |
1824 | } | |
1825 | default: | |
1826 | ret = -EINVAL; | |
1827 | break; | |
1828 | } | |
1829 | ||
1830 | drm_property_change_valid_put(prop, ref); | |
1831 | return ret; | |
1832 | } | |
1833 | ||
0f45c26f | 1834 | /** |
9744bf41 | 1835 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1836 | * |
1837 | * @dev: drm device to check. | |
1838 | * @plane_mask: plane mask for planes that were updated. | |
1839 | * @ret: return value, can be -EDEADLK for a retry. | |
1840 | * | |
1841 | * Before doing an update plane->old_fb is set to plane->fb, | |
1842 | * but before dropping the locks old_fb needs to be set to NULL | |
1843 | * and plane->fb updated. This is a common operation for each | |
1844 | * atomic update, so this call is split off as a helper. | |
1845 | */ | |
1846 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1847 | unsigned plane_mask, | |
1848 | int ret) | |
1849 | { | |
1850 | struct drm_plane *plane; | |
1851 | ||
1852 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1853 | * locks (ie. while it is still safe to deref plane->state). We | |
1854 | * need to do this here because the driver entry points cannot | |
1855 | * distinguish between legacy and atomic ioctls. | |
1856 | */ | |
1857 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1858 | if (ret == 0) { | |
1859 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1860 | if (new_fb) | |
1861 | drm_framebuffer_reference(new_fb); | |
1862 | plane->fb = new_fb; | |
1863 | plane->crtc = plane->state->crtc; | |
1864 | ||
1865 | if (plane->old_fb) | |
1866 | drm_framebuffer_unreference(plane->old_fb); | |
1867 | } | |
1868 | plane->old_fb = NULL; | |
1869 | } | |
1870 | } | |
1871 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1872 | ||
9a83a71a GP |
1873 | /** |
1874 | * DOC: explicit fencing properties | |
1875 | * | |
1876 | * Explicit fencing allows userspace to control the buffer synchronization | |
1877 | * between devices. A Fence or a group of fences are transfered to/from | |
1878 | * userspace using Sync File fds and there are two DRM properties for that. | |
1879 | * IN_FENCE_FD on each DRM Plane to send fences to the kernel and | |
1880 | * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel. | |
1881 | * | |
1882 | * As a contrast, with implicit fencing the kernel keeps track of any | |
1883 | * ongoing rendering, and automatically ensures that the atomic update waits | |
1884 | * for any pending rendering to complete. For shared buffers represented with | |
ea0dd85a | 1885 | * a &struct dma_buf this is tracked in &reservation_object structures. |
9a83a71a GP |
1886 | * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org), |
1887 | * whereas explicit fencing is what Android wants. | |
1888 | * | |
1889 | * "IN_FENCE_FD”: | |
1890 | * Use this property to pass a fence that DRM should wait on before | |
1891 | * proceeding with the Atomic Commit request and show the framebuffer for | |
1892 | * the plane on the screen. The fence can be either a normal fence or a | |
1893 | * merged one, the sync_file framework will handle both cases and use a | |
1894 | * fence_array if a merged fence is received. Passing -1 here means no | |
1895 | * fences to wait on. | |
1896 | * | |
1897 | * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag | |
1898 | * it will only check if the Sync File is a valid one. | |
1899 | * | |
1900 | * On the driver side the fence is stored on the @fence parameter of | |
ea0dd85a | 1901 | * &struct drm_plane_state. Drivers which also support implicit fencing |
9a83a71a GP |
1902 | * should set the implicit fence using drm_atomic_set_fence_for_plane(), |
1903 | * to make sure there's consistent behaviour between drivers in precedence | |
1904 | * of implicit vs. explicit fencing. | |
1905 | * | |
1906 | * "OUT_FENCE_PTR”: | |
1907 | * Use this property to pass a file descriptor pointer to DRM. Once the | |
1908 | * Atomic Commit request call returns OUT_FENCE_PTR will be filled with | |
1909 | * the file descriptor number of a Sync File. This Sync File contains the | |
1910 | * CRTC fence that will be signaled when all framebuffers present on the | |
1911 | * Atomic Commit * request for that given CRTC are scanned out on the | |
1912 | * screen. | |
1913 | * | |
1914 | * The Atomic Commit request fails if a invalid pointer is passed. If the | |
1915 | * Atomic Commit request fails for any other reason the out fence fd | |
1916 | * returned will be -1. On a Atomic Commit with the | |
1917 | * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1. | |
1918 | * | |
1919 | * Note that out-fences don't have a special interface to drivers and are | |
ea0dd85a | 1920 | * internally represented by a &struct drm_pending_vblank_event in struct |
9a83a71a GP |
1921 | * &drm_crtc_state, which is also used by the nonblocking atomic commit |
1922 | * helpers and for the DRM event handling for existing userspace. | |
1923 | */ | |
1924 | ||
beaf5af4 GP |
1925 | struct drm_out_fence_state { |
1926 | s64 __user *out_fence_ptr; | |
1927 | struct sync_file *sync_file; | |
1928 | int fd; | |
1929 | }; | |
1930 | ||
1931 | static int setup_out_fence(struct drm_out_fence_state *fence_state, | |
1932 | struct dma_fence *fence) | |
1933 | { | |
1934 | fence_state->fd = get_unused_fd_flags(O_CLOEXEC); | |
1935 | if (fence_state->fd < 0) | |
1936 | return fence_state->fd; | |
1937 | ||
1938 | if (put_user(fence_state->fd, fence_state->out_fence_ptr)) | |
1939 | return -EFAULT; | |
1940 | ||
1941 | fence_state->sync_file = sync_file_create(fence); | |
1942 | if (!fence_state->sync_file) | |
1943 | return -ENOMEM; | |
1944 | ||
1945 | return 0; | |
1946 | } | |
1947 | ||
1948 | static int prepare_crtc_signaling(struct drm_device *dev, | |
1949 | struct drm_atomic_state *state, | |
1950 | struct drm_mode_atomic *arg, | |
1951 | struct drm_file *file_priv, | |
1952 | struct drm_out_fence_state **fence_state, | |
1953 | unsigned int *num_fences) | |
1954 | { | |
1955 | struct drm_crtc *crtc; | |
1956 | struct drm_crtc_state *crtc_state; | |
1957 | int i, ret; | |
1958 | ||
1959 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) | |
1960 | return 0; | |
1961 | ||
1962 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1963 | u64 __user *fence_ptr; | |
1964 | ||
1965 | fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc); | |
1966 | ||
1967 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) { | |
1968 | struct drm_pending_vblank_event *e; | |
1969 | ||
1970 | e = create_vblank_event(dev, arg->user_data); | |
1971 | if (!e) | |
1972 | return -ENOMEM; | |
1973 | ||
1974 | crtc_state->event = e; | |
1975 | } | |
1976 | ||
1977 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1978 | struct drm_pending_vblank_event *e = crtc_state->event; | |
1979 | ||
1980 | if (!file_priv) | |
1981 | continue; | |
1982 | ||
1983 | ret = drm_event_reserve_init(dev, file_priv, &e->base, | |
1984 | &e->event.base); | |
1985 | if (ret) { | |
1986 | kfree(e); | |
1987 | crtc_state->event = NULL; | |
1988 | return ret; | |
1989 | } | |
1990 | } | |
1991 | ||
1992 | if (fence_ptr) { | |
1993 | struct dma_fence *fence; | |
1994 | struct drm_out_fence_state *f; | |
1995 | ||
1996 | f = krealloc(*fence_state, sizeof(**fence_state) * | |
1997 | (*num_fences + 1), GFP_KERNEL); | |
1998 | if (!f) | |
1999 | return -ENOMEM; | |
2000 | ||
2001 | memset(&f[*num_fences], 0, sizeof(*f)); | |
2002 | ||
2003 | f[*num_fences].out_fence_ptr = fence_ptr; | |
2004 | *fence_state = f; | |
2005 | ||
35f8cc3b | 2006 | fence = drm_crtc_create_fence(crtc); |
beaf5af4 GP |
2007 | if (!fence) |
2008 | return -ENOMEM; | |
2009 | ||
2010 | ret = setup_out_fence(&f[(*num_fences)++], fence); | |
2011 | if (ret) { | |
2012 | dma_fence_put(fence); | |
2013 | return ret; | |
2014 | } | |
2015 | ||
2016 | crtc_state->event->base.fence = fence; | |
2017 | } | |
2018 | } | |
2019 | ||
2020 | return 0; | |
2021 | } | |
2022 | ||
2023 | static void complete_crtc_signaling(struct drm_device *dev, | |
2024 | struct drm_atomic_state *state, | |
2025 | struct drm_out_fence_state *fence_state, | |
2026 | unsigned int num_fences, | |
2027 | bool install_fds) | |
2028 | { | |
2029 | struct drm_crtc *crtc; | |
2030 | struct drm_crtc_state *crtc_state; | |
2031 | int i; | |
2032 | ||
2033 | if (install_fds) { | |
2034 | for (i = 0; i < num_fences; i++) | |
2035 | fd_install(fence_state[i].fd, | |
2036 | fence_state[i].sync_file->file); | |
2037 | ||
2038 | kfree(fence_state); | |
2039 | return; | |
2040 | } | |
2041 | ||
2042 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
2043 | /* | |
2044 | * TEST_ONLY and PAGE_FLIP_EVENT are mutually | |
2045 | * exclusive, if they weren't, this code should be | |
2046 | * called on success for TEST_ONLY too. | |
2047 | */ | |
2048 | if (crtc_state->event) | |
2049 | drm_event_cancel_free(dev, &crtc_state->event->base); | |
2050 | } | |
2051 | ||
2052 | if (!fence_state) | |
2053 | return; | |
2054 | ||
2055 | for (i = 0; i < num_fences; i++) { | |
2056 | if (fence_state[i].sync_file) | |
2057 | fput(fence_state[i].sync_file->file); | |
2058 | if (fence_state[i].fd >= 0) | |
2059 | put_unused_fd(fence_state[i].fd); | |
2060 | ||
2061 | /* If this fails log error to the user */ | |
2062 | if (fence_state[i].out_fence_ptr && | |
2063 | put_user(-1, fence_state[i].out_fence_ptr)) | |
2064 | DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n"); | |
2065 | } | |
2066 | ||
2067 | kfree(fence_state); | |
2068 | } | |
2069 | ||
d34f20d6 RC |
2070 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
2071 | void *data, struct drm_file *file_priv) | |
2072 | { | |
2073 | struct drm_mode_atomic *arg = data; | |
2074 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
2075 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
2076 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
2077 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
2078 | unsigned int copied_objs, copied_props; | |
2079 | struct drm_atomic_state *state; | |
2080 | struct drm_modeset_acquire_ctx ctx; | |
2081 | struct drm_plane *plane; | |
beaf5af4 | 2082 | struct drm_out_fence_state *fence_state = NULL; |
45723728 | 2083 | unsigned plane_mask; |
d34f20d6 | 2084 | int ret = 0; |
beaf5af4 | 2085 | unsigned int i, j, num_fences = 0; |
d34f20d6 RC |
2086 | |
2087 | /* disallow for drivers not supporting atomic: */ | |
2088 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
2089 | return -EINVAL; | |
2090 | ||
2091 | /* disallow for userspace that has not enabled atomic cap (even | |
2092 | * though this may be a bit overkill, since legacy userspace | |
2093 | * wouldn't know how to call this ioctl) | |
2094 | */ | |
2095 | if (!file_priv->atomic) | |
2096 | return -EINVAL; | |
2097 | ||
2098 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
2099 | return -EINVAL; | |
2100 | ||
2101 | if (arg->reserved) | |
2102 | return -EINVAL; | |
2103 | ||
2104 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
2105 | !dev->mode_config.async_page_flip) | |
2106 | return -EINVAL; | |
2107 | ||
2108 | /* can't test and expect an event at the same time. */ | |
2109 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
2110 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
2111 | return -EINVAL; | |
2112 | ||
2113 | drm_modeset_acquire_init(&ctx, 0); | |
2114 | ||
2115 | state = drm_atomic_state_alloc(dev); | |
2116 | if (!state) | |
2117 | return -ENOMEM; | |
2118 | ||
2119 | state->acquire_ctx = &ctx; | |
2120 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
2121 | ||
2122 | retry: | |
45723728 | 2123 | plane_mask = 0; |
d34f20d6 RC |
2124 | copied_objs = 0; |
2125 | copied_props = 0; | |
2126 | ||
2127 | for (i = 0; i < arg->count_objs; i++) { | |
2128 | uint32_t obj_id, count_props; | |
2129 | struct drm_mode_object *obj; | |
2130 | ||
2131 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
2132 | ret = -EFAULT; | |
ec9f932e | 2133 | goto out; |
d34f20d6 RC |
2134 | } |
2135 | ||
2136 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
b164d31f DA |
2137 | if (!obj) { |
2138 | ret = -ENOENT; | |
2139 | goto out; | |
2140 | } | |
2141 | ||
2142 | if (!obj->properties) { | |
2143 | drm_mode_object_unreference(obj); | |
d34f20d6 | 2144 | ret = -ENOENT; |
ec9f932e | 2145 | goto out; |
d34f20d6 RC |
2146 | } |
2147 | ||
d34f20d6 | 2148 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
b164d31f | 2149 | drm_mode_object_unreference(obj); |
d34f20d6 | 2150 | ret = -EFAULT; |
ec9f932e | 2151 | goto out; |
d34f20d6 RC |
2152 | } |
2153 | ||
2154 | copied_objs++; | |
2155 | ||
2156 | for (j = 0; j < count_props; j++) { | |
2157 | uint32_t prop_id; | |
2158 | uint64_t prop_value; | |
2159 | struct drm_property *prop; | |
2160 | ||
2161 | if (get_user(prop_id, props_ptr + copied_props)) { | |
b164d31f | 2162 | drm_mode_object_unreference(obj); |
d34f20d6 | 2163 | ret = -EFAULT; |
ec9f932e | 2164 | goto out; |
d34f20d6 RC |
2165 | } |
2166 | ||
f92f053b | 2167 | prop = drm_mode_obj_find_prop_id(obj, prop_id); |
d34f20d6 | 2168 | if (!prop) { |
b164d31f | 2169 | drm_mode_object_unreference(obj); |
d34f20d6 | 2170 | ret = -ENOENT; |
ec9f932e | 2171 | goto out; |
d34f20d6 RC |
2172 | } |
2173 | ||
42c5814c GR |
2174 | if (copy_from_user(&prop_value, |
2175 | prop_values_ptr + copied_props, | |
2176 | sizeof(prop_value))) { | |
b164d31f | 2177 | drm_mode_object_unreference(obj); |
d34f20d6 | 2178 | ret = -EFAULT; |
ec9f932e | 2179 | goto out; |
d34f20d6 RC |
2180 | } |
2181 | ||
2182 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
b164d31f DA |
2183 | if (ret) { |
2184 | drm_mode_object_unreference(obj); | |
ec9f932e | 2185 | goto out; |
b164d31f | 2186 | } |
d34f20d6 RC |
2187 | |
2188 | copied_props++; | |
2189 | } | |
a9cc54ee | 2190 | |
c4749c9a ML |
2191 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
2192 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
2193 | plane = obj_to_plane(obj); |
2194 | plane_mask |= (1 << drm_plane_index(plane)); | |
2195 | plane->old_fb = plane->fb; | |
2196 | } | |
b164d31f | 2197 | drm_mode_object_unreference(obj); |
d34f20d6 RC |
2198 | } |
2199 | ||
beaf5af4 GP |
2200 | ret = prepare_crtc_signaling(dev, state, arg, file_priv, &fence_state, |
2201 | &num_fences); | |
2202 | if (ret) | |
2203 | goto out; | |
d34f20d6 RC |
2204 | |
2205 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
2206 | ret = drm_atomic_check_only(state); | |
d34f20d6 | 2207 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
b837ba0a | 2208 | ret = drm_atomic_nonblocking_commit(state); |
d34f20d6 | 2209 | } else { |
fceffb32 RC |
2210 | if (unlikely(drm_debug & DRM_UT_STATE)) |
2211 | drm_atomic_print_state(state); | |
2212 | ||
d34f20d6 RC |
2213 | ret = drm_atomic_commit(state); |
2214 | } | |
2215 | ||
ec9f932e | 2216 | out: |
0f45c26f | 2217 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 2218 | |
beaf5af4 | 2219 | complete_crtc_signaling(dev, state, fence_state, num_fences, !ret); |
c4749c9a | 2220 | |
ec9f932e ML |
2221 | if (ret == -EDEADLK) { |
2222 | drm_atomic_state_clear(state); | |
2223 | drm_modeset_backoff(&ctx); | |
2224 | goto retry; | |
2225 | } | |
d34f20d6 | 2226 | |
0853695c | 2227 | drm_atomic_state_put(state); |
d34f20d6 RC |
2228 | |
2229 | drm_modeset_drop_locks(&ctx); | |
2230 | drm_modeset_acquire_fini(&ctx); | |
2231 | ||
2232 | return ret; | |
d34f20d6 | 2233 | } |