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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 | ||
b3ba3f6f | 38 | void __drm_crtc_commit_free(struct kref *kref) |
3b24f7d6 DV |
39 | { |
40 | struct drm_crtc_commit *commit = | |
41 | container_of(kref, struct drm_crtc_commit, ref); | |
42 | ||
43 | kfree(commit); | |
44 | } | |
b3ba3f6f | 45 | EXPORT_SYMBOL(__drm_crtc_commit_free); |
3b24f7d6 | 46 | |
036ef573 ML |
47 | /** |
48 | * drm_atomic_state_default_release - | |
49 | * release memory initialized by drm_atomic_state_init | |
50 | * @state: atomic state | |
51 | * | |
52 | * Free all the memory allocated by drm_atomic_state_init. | |
53 | * This is useful for drivers that subclass the atomic state. | |
54 | */ | |
55 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
56 | { |
57 | kfree(state->connectors); | |
cc4ceb48 | 58 | kfree(state->crtcs); |
cc4ceb48 | 59 | kfree(state->planes); |
cc4ceb48 | 60 | } |
036ef573 | 61 | EXPORT_SYMBOL(drm_atomic_state_default_release); |
cc4ceb48 DV |
62 | |
63 | /** | |
036ef573 | 64 | * drm_atomic_state_init - init new atomic state |
cc4ceb48 | 65 | * @dev: DRM device |
036ef573 | 66 | * @state: atomic state |
cc4ceb48 | 67 | * |
036ef573 ML |
68 | * Default implementation for filling in a new atomic state. |
69 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 70 | */ |
036ef573 ML |
71 | int |
72 | drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state) | |
cc4ceb48 | 73 | { |
0853695c CW |
74 | kref_init(&state->ref); |
75 | ||
d34f20d6 RC |
76 | /* TODO legacy paths should maybe do a better job about |
77 | * setting this appropriately? | |
78 | */ | |
79 | state->allow_modeset = true; | |
80 | ||
cc4ceb48 DV |
81 | state->crtcs = kcalloc(dev->mode_config.num_crtc, |
82 | sizeof(*state->crtcs), GFP_KERNEL); | |
83 | if (!state->crtcs) | |
84 | goto fail; | |
cc4ceb48 DV |
85 | state->planes = kcalloc(dev->mode_config.num_total_plane, |
86 | sizeof(*state->planes), GFP_KERNEL); | |
87 | if (!state->planes) | |
88 | goto fail; | |
cc4ceb48 DV |
89 | |
90 | state->dev = dev; | |
91 | ||
036ef573 | 92 | DRM_DEBUG_ATOMIC("Allocated atomic state %p\n", state); |
cc4ceb48 | 93 | |
036ef573 | 94 | return 0; |
cc4ceb48 | 95 | fail: |
036ef573 ML |
96 | drm_atomic_state_default_release(state); |
97 | return -ENOMEM; | |
98 | } | |
99 | EXPORT_SYMBOL(drm_atomic_state_init); | |
100 | ||
101 | /** | |
102 | * drm_atomic_state_alloc - allocate atomic state | |
103 | * @dev: DRM device | |
104 | * | |
105 | * This allocates an empty atomic state to track updates. | |
106 | */ | |
107 | struct drm_atomic_state * | |
108 | drm_atomic_state_alloc(struct drm_device *dev) | |
109 | { | |
110 | struct drm_mode_config *config = &dev->mode_config; | |
111 | struct drm_atomic_state *state; | |
112 | ||
113 | if (!config->funcs->atomic_state_alloc) { | |
114 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
115 | if (!state) | |
116 | return NULL; | |
117 | if (drm_atomic_state_init(dev, state) < 0) { | |
118 | kfree(state); | |
119 | return NULL; | |
120 | } | |
121 | return state; | |
122 | } | |
cc4ceb48 | 123 | |
036ef573 | 124 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
125 | } |
126 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
127 | ||
128 | /** | |
036ef573 | 129 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
130 | * @state: atomic state |
131 | * | |
036ef573 ML |
132 | * Default implementation for clearing atomic state. |
133 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 134 | */ |
036ef573 | 135 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
136 | { |
137 | struct drm_device *dev = state->dev; | |
6f75cea6 | 138 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
139 | int i; |
140 | ||
17a38d9c | 141 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 142 | |
f52b69f1 | 143 | for (i = 0; i < state->num_connector; i++) { |
63e83c1d | 144 | struct drm_connector *connector = state->connectors[i].ptr; |
cc4ceb48 DV |
145 | |
146 | if (!connector) | |
147 | continue; | |
148 | ||
d2307dea | 149 | connector->funcs->atomic_destroy_state(connector, |
63e83c1d DV |
150 | state->connectors[i].state); |
151 | state->connectors[i].ptr = NULL; | |
152 | state->connectors[i].state = NULL; | |
ad093607 | 153 | drm_connector_put(connector); |
cc4ceb48 DV |
154 | } |
155 | ||
6f75cea6 | 156 | for (i = 0; i < config->num_crtc; i++) { |
5d943aa6 | 157 | struct drm_crtc *crtc = state->crtcs[i].ptr; |
cc4ceb48 DV |
158 | |
159 | if (!crtc) | |
160 | continue; | |
161 | ||
162 | crtc->funcs->atomic_destroy_state(crtc, | |
5d943aa6 | 163 | state->crtcs[i].state); |
3b24f7d6 DV |
164 | |
165 | if (state->crtcs[i].commit) { | |
166 | kfree(state->crtcs[i].commit->event); | |
167 | state->crtcs[i].commit->event = NULL; | |
168 | drm_crtc_commit_put(state->crtcs[i].commit); | |
169 | } | |
170 | ||
171 | state->crtcs[i].commit = NULL; | |
5d943aa6 DV |
172 | state->crtcs[i].ptr = NULL; |
173 | state->crtcs[i].state = NULL; | |
cc4ceb48 DV |
174 | } |
175 | ||
6f75cea6 | 176 | for (i = 0; i < config->num_total_plane; i++) { |
b8b5342b | 177 | struct drm_plane *plane = state->planes[i].ptr; |
cc4ceb48 DV |
178 | |
179 | if (!plane) | |
180 | continue; | |
181 | ||
182 | plane->funcs->atomic_destroy_state(plane, | |
b8b5342b DV |
183 | state->planes[i].state); |
184 | state->planes[i].ptr = NULL; | |
185 | state->planes[i].state = NULL; | |
cc4ceb48 DV |
186 | } |
187 | } | |
036ef573 ML |
188 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
189 | ||
190 | /** | |
191 | * drm_atomic_state_clear - clear state object | |
192 | * @state: atomic state | |
193 | * | |
194 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
195 | * all locks. So someone else could sneak in and change the current modeset | |
196 | * configuration. Which means that all the state assembled in @state is no | |
197 | * longer an atomic update to the current state, but to some arbitrary earlier | |
d574528a DV |
198 | * state. Which could break assumptions the driver's |
199 | * &drm_mode_config_funcs.atomic_check likely relies on. | |
036ef573 ML |
200 | * |
201 | * Hence we must clear all cached state and completely start over, using this | |
202 | * function. | |
203 | */ | |
204 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
205 | { | |
206 | struct drm_device *dev = state->dev; | |
207 | struct drm_mode_config *config = &dev->mode_config; | |
208 | ||
209 | if (config->funcs->atomic_state_clear) | |
210 | config->funcs->atomic_state_clear(state); | |
211 | else | |
212 | drm_atomic_state_default_clear(state); | |
213 | } | |
cc4ceb48 DV |
214 | EXPORT_SYMBOL(drm_atomic_state_clear); |
215 | ||
216 | /** | |
0853695c CW |
217 | * __drm_atomic_state_free - free all memory for an atomic state |
218 | * @ref: This atomic state to deallocate | |
cc4ceb48 DV |
219 | * |
220 | * This frees all memory associated with an atomic state, including all the | |
221 | * per-object state for planes, crtcs and connectors. | |
222 | */ | |
0853695c | 223 | void __drm_atomic_state_free(struct kref *ref) |
cc4ceb48 | 224 | { |
0853695c CW |
225 | struct drm_atomic_state *state = container_of(ref, typeof(*state), ref); |
226 | struct drm_mode_config *config = &state->dev->mode_config; | |
036ef573 | 227 | |
cc4ceb48 DV |
228 | drm_atomic_state_clear(state); |
229 | ||
17a38d9c | 230 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 231 | |
036ef573 ML |
232 | if (config->funcs->atomic_state_free) { |
233 | config->funcs->atomic_state_free(state); | |
234 | } else { | |
235 | drm_atomic_state_default_release(state); | |
236 | kfree(state); | |
237 | } | |
cc4ceb48 | 238 | } |
0853695c | 239 | EXPORT_SYMBOL(__drm_atomic_state_free); |
cc4ceb48 DV |
240 | |
241 | /** | |
242 | * drm_atomic_get_crtc_state - get crtc state | |
243 | * @state: global atomic state object | |
244 | * @crtc: crtc to get state object for | |
245 | * | |
246 | * This function returns the crtc state for the given crtc, allocating it if | |
247 | * needed. It will also grab the relevant crtc lock to make sure that the state | |
248 | * is consistent. | |
249 | * | |
250 | * Returns: | |
251 | * | |
252 | * Either the allocated state or the error code encoded into the pointer. When | |
253 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
254 | * entire atomic sequence must be restarted. All other errors are fatal. | |
255 | */ | |
256 | struct drm_crtc_state * | |
257 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
258 | struct drm_crtc *crtc) | |
259 | { | |
1b26a5e1 | 260 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
261 | struct drm_crtc_state *crtc_state; |
262 | ||
7f4eaa89 ML |
263 | WARN_ON(!state->acquire_ctx); |
264 | ||
1b26a5e1 ML |
265 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
266 | if (crtc_state) | |
267 | return crtc_state; | |
cc4ceb48 DV |
268 | |
269 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
270 | if (ret) | |
271 | return ERR_PTR(ret); | |
272 | ||
273 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
274 | if (!crtc_state) | |
275 | return ERR_PTR(-ENOMEM); | |
276 | ||
5d943aa6 | 277 | state->crtcs[index].state = crtc_state; |
581e49fe ML |
278 | state->crtcs[index].old_state = crtc->state; |
279 | state->crtcs[index].new_state = crtc_state; | |
5d943aa6 | 280 | state->crtcs[index].ptr = crtc; |
cc4ceb48 DV |
281 | crtc_state->state = state; |
282 | ||
fa3ab4c2 VS |
283 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
284 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
285 | |
286 | return crtc_state; | |
287 | } | |
288 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
289 | ||
beaf5af4 | 290 | static void set_out_fence_for_crtc(struct drm_atomic_state *state, |
7e9081c5 | 291 | struct drm_crtc *crtc, s32 __user *fence_ptr) |
beaf5af4 GP |
292 | { |
293 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr; | |
294 | } | |
295 | ||
7e9081c5 | 296 | static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state, |
beaf5af4 GP |
297 | struct drm_crtc *crtc) |
298 | { | |
7e9081c5 | 299 | s32 __user *fence_ptr; |
beaf5af4 GP |
300 | |
301 | fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr; | |
302 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL; | |
303 | ||
304 | return fence_ptr; | |
305 | } | |
306 | ||
819364da DS |
307 | /** |
308 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
309 | * @state: the CRTC whose incoming state to update | |
310 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
311 | * | |
cbef9099 DP |
312 | * Set a mode (originating from the kernel) on the desired CRTC state and update |
313 | * the enable property. | |
819364da DS |
314 | * |
315 | * RETURNS: | |
316 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
317 | */ | |
318 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
319 | struct drm_display_mode *mode) | |
320 | { | |
99cf4a29 DS |
321 | struct drm_mode_modeinfo umode; |
322 | ||
819364da DS |
323 | /* Early return for no change. */ |
324 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
325 | return 0; | |
326 | ||
6472e509 | 327 | drm_property_blob_put(state->mode_blob); |
99cf4a29 DS |
328 | state->mode_blob = NULL; |
329 | ||
819364da | 330 | if (mode) { |
99cf4a29 DS |
331 | drm_mode_convert_to_umode(&umode, mode); |
332 | state->mode_blob = | |
333 | drm_property_create_blob(state->crtc->dev, | |
334 | sizeof(umode), | |
335 | &umode); | |
336 | if (IS_ERR(state->mode_blob)) | |
337 | return PTR_ERR(state->mode_blob); | |
338 | ||
819364da DS |
339 | drm_mode_copy(&state->mode, mode); |
340 | state->enable = true; | |
341 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
342 | mode->name, state); | |
343 | } else { | |
344 | memset(&state->mode, 0, sizeof(state->mode)); | |
345 | state->enable = false; | |
346 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
347 | state); | |
348 | } | |
349 | ||
350 | return 0; | |
351 | } | |
352 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
353 | ||
955f3c33 DS |
354 | /** |
355 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
356 | * @state: the CRTC whose incoming state to update | |
357 | * @blob: pointer to blob property to use for mode | |
358 | * | |
359 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
360 | * This function will take a reference on the blob property for the CRTC state, | |
361 | * and release the reference held on the state's existing mode property, if any | |
362 | * was set. | |
363 | * | |
364 | * RETURNS: | |
365 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
366 | */ | |
367 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
368 | struct drm_property_blob *blob) | |
369 | { | |
370 | if (blob == state->mode_blob) | |
371 | return 0; | |
372 | ||
6472e509 | 373 | drm_property_blob_put(state->mode_blob); |
955f3c33 DS |
374 | state->mode_blob = NULL; |
375 | ||
6709887c TV |
376 | memset(&state->mode, 0, sizeof(state->mode)); |
377 | ||
955f3c33 DS |
378 | if (blob) { |
379 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
380 | drm_mode_convert_umode(&state->mode, | |
381 | (const struct drm_mode_modeinfo *) | |
382 | blob->data)) | |
383 | return -EINVAL; | |
384 | ||
6472e509 | 385 | state->mode_blob = drm_property_blob_get(blob); |
955f3c33 DS |
386 | state->enable = true; |
387 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
388 | state->mode.name, state); | |
389 | } else { | |
955f3c33 DS |
390 | state->enable = false; |
391 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
392 | state); | |
393 | } | |
394 | ||
395 | return 0; | |
396 | } | |
397 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
398 | ||
5488dc16 LL |
399 | /** |
400 | * drm_atomic_replace_property_blob - replace a blob property | |
401 | * @blob: a pointer to the member blob to be replaced | |
402 | * @new_blob: the new blob to replace with | |
5488dc16 LL |
403 | * @replaced: whether the blob has been replaced |
404 | * | |
405 | * RETURNS: | |
406 | * Zero on success, error code on failure | |
407 | */ | |
408 | static void | |
409 | drm_atomic_replace_property_blob(struct drm_property_blob **blob, | |
410 | struct drm_property_blob *new_blob, | |
411 | bool *replaced) | |
412 | { | |
413 | struct drm_property_blob *old_blob = *blob; | |
414 | ||
415 | if (old_blob == new_blob) | |
416 | return; | |
417 | ||
6472e509 | 418 | drm_property_blob_put(old_blob); |
5488dc16 | 419 | if (new_blob) |
6472e509 | 420 | drm_property_blob_get(new_blob); |
5488dc16 LL |
421 | *blob = new_blob; |
422 | *replaced = true; | |
423 | ||
424 | return; | |
425 | } | |
426 | ||
427 | static int | |
428 | drm_atomic_replace_property_blob_from_id(struct drm_crtc *crtc, | |
429 | struct drm_property_blob **blob, | |
430 | uint64_t blob_id, | |
431 | ssize_t expected_size, | |
432 | bool *replaced) | |
433 | { | |
5488dc16 LL |
434 | struct drm_property_blob *new_blob = NULL; |
435 | ||
436 | if (blob_id != 0) { | |
cac5fced | 437 | new_blob = drm_property_lookup_blob(crtc->dev, blob_id); |
5488dc16 LL |
438 | if (new_blob == NULL) |
439 | return -EINVAL; | |
cac5fced FM |
440 | |
441 | if (expected_size > 0 && expected_size != new_blob->length) { | |
6472e509 | 442 | drm_property_blob_put(new_blob); |
5488dc16 | 443 | return -EINVAL; |
cac5fced | 444 | } |
5488dc16 LL |
445 | } |
446 | ||
447 | drm_atomic_replace_property_blob(blob, new_blob, replaced); | |
6472e509 | 448 | drm_property_blob_put(new_blob); |
5488dc16 LL |
449 | |
450 | return 0; | |
451 | } | |
452 | ||
40ecc694 RC |
453 | /** |
454 | * drm_atomic_crtc_set_property - set property on CRTC | |
455 | * @crtc: the drm CRTC to set a property on | |
456 | * @state: the state object to update with the new property value | |
457 | * @property: the property to set | |
458 | * @val: the new property value | |
459 | * | |
d574528a DV |
460 | * This function handles generic/core properties and calls out to driver's |
461 | * &drm_crtc_funcs.atomic_set_property for driver properties. To ensure | |
462 | * consistent behavior you must call this function rather than the driver hook | |
463 | * directly. | |
40ecc694 RC |
464 | * |
465 | * RETURNS: | |
466 | * Zero on success, error code on failure | |
467 | */ | |
468 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
469 | struct drm_crtc_state *state, struct drm_property *property, | |
470 | uint64_t val) | |
471 | { | |
eab3bbef DV |
472 | struct drm_device *dev = crtc->dev; |
473 | struct drm_mode_config *config = &dev->mode_config; | |
5488dc16 | 474 | bool replaced = false; |
955f3c33 | 475 | int ret; |
eab3bbef | 476 | |
27798365 | 477 | if (property == config->prop_active) |
eab3bbef | 478 | state->active = val; |
955f3c33 DS |
479 | else if (property == config->prop_mode_id) { |
480 | struct drm_property_blob *mode = | |
481 | drm_property_lookup_blob(dev, val); | |
482 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
6472e509 | 483 | drm_property_blob_put(mode); |
955f3c33 | 484 | return ret; |
5488dc16 LL |
485 | } else if (property == config->degamma_lut_property) { |
486 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
487 | &state->degamma_lut, | |
488 | val, | |
489 | -1, | |
490 | &replaced); | |
add1fa75 | 491 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
492 | return ret; |
493 | } else if (property == config->ctm_property) { | |
494 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
495 | &state->ctm, | |
496 | val, | |
497 | sizeof(struct drm_color_ctm), | |
498 | &replaced); | |
add1fa75 | 499 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
500 | return ret; |
501 | } else if (property == config->gamma_lut_property) { | |
502 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
503 | &state->gamma_lut, | |
504 | val, | |
505 | -1, | |
506 | &replaced); | |
add1fa75 | 507 | state->color_mgmt_changed |= replaced; |
5488dc16 | 508 | return ret; |
beaf5af4 | 509 | } else if (property == config->prop_out_fence_ptr) { |
7e9081c5 | 510 | s32 __user *fence_ptr = u64_to_user_ptr(val); |
beaf5af4 GP |
511 | |
512 | if (!fence_ptr) | |
513 | return 0; | |
514 | ||
515 | if (put_user(-1, fence_ptr)) | |
516 | return -EFAULT; | |
517 | ||
518 | set_out_fence_for_crtc(state->state, crtc, fence_ptr); | |
5488dc16 | 519 | } else if (crtc->funcs->atomic_set_property) |
40ecc694 | 520 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
27798365 DS |
521 | else |
522 | return -EINVAL; | |
523 | ||
524 | return 0; | |
40ecc694 RC |
525 | } |
526 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
527 | ||
c0714fc9 DV |
528 | /** |
529 | * drm_atomic_crtc_get_property - get property value from CRTC state | |
530 | * @crtc: the drm CRTC to set a property on | |
531 | * @state: the state object to get the property value from | |
532 | * @property: the property to set | |
533 | * @val: return location for the property value | |
534 | * | |
d574528a DV |
535 | * This function handles generic/core properties and calls out to driver's |
536 | * &drm_crtc_funcs.atomic_get_property for driver properties. To ensure | |
537 | * consistent behavior you must call this function rather than the driver hook | |
538 | * directly. | |
c0714fc9 DV |
539 | * |
540 | * RETURNS: | |
541 | * Zero on success, error code on failure | |
ac9c9256 | 542 | */ |
bf22f3be GT |
543 | static int |
544 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
ac9c9256 RC |
545 | const struct drm_crtc_state *state, |
546 | struct drm_property *property, uint64_t *val) | |
547 | { | |
8f164ce4 DS |
548 | struct drm_device *dev = crtc->dev; |
549 | struct drm_mode_config *config = &dev->mode_config; | |
550 | ||
551 | if (property == config->prop_active) | |
552 | *val = state->active; | |
955f3c33 DS |
553 | else if (property == config->prop_mode_id) |
554 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
5488dc16 LL |
555 | else if (property == config->degamma_lut_property) |
556 | *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; | |
557 | else if (property == config->ctm_property) | |
558 | *val = (state->ctm) ? state->ctm->base.id : 0; | |
559 | else if (property == config->gamma_lut_property) | |
560 | *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; | |
beaf5af4 GP |
561 | else if (property == config->prop_out_fence_ptr) |
562 | *val = 0; | |
8f164ce4 | 563 | else if (crtc->funcs->atomic_get_property) |
ac9c9256 | 564 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
8f164ce4 DS |
565 | else |
566 | return -EINVAL; | |
567 | ||
568 | return 0; | |
ac9c9256 | 569 | } |
ac9c9256 | 570 | |
5e743737 RC |
571 | /** |
572 | * drm_atomic_crtc_check - check crtc state | |
573 | * @crtc: crtc to check | |
574 | * @state: crtc state to check | |
575 | * | |
576 | * Provides core sanity checks for crtc state. | |
577 | * | |
578 | * RETURNS: | |
579 | * Zero on success, error code on failure | |
580 | */ | |
581 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
582 | struct drm_crtc_state *state) | |
583 | { | |
584 | /* NOTE: we explicitly don't enforce constraints such as primary | |
585 | * layer covering entire screen, since that is something we want | |
586 | * to allow (on hw that supports it). For hw that does not, it | |
587 | * should be checked in driver's crtc->atomic_check() vfunc. | |
588 | * | |
589 | * TODO: Add generic modeset state checks once we support those. | |
590 | */ | |
eab3bbef DV |
591 | |
592 | if (state->active && !state->enable) { | |
fa3ab4c2 VS |
593 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
594 | crtc->base.id, crtc->name); | |
eab3bbef DV |
595 | return -EINVAL; |
596 | } | |
597 | ||
99cf4a29 DS |
598 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
599 | * as this is a kernel-internal detail that userspace should never | |
600 | * be able to trigger. */ | |
601 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
602 | WARN_ON(state->enable && !state->mode_blob)) { | |
fa3ab4c2 VS |
603 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
604 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
605 | return -EINVAL; |
606 | } | |
607 | ||
608 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
609 | WARN_ON(!state->enable && state->mode_blob)) { | |
fa3ab4c2 VS |
610 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
611 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
612 | return -EINVAL; |
613 | } | |
614 | ||
4cba6850 DV |
615 | /* |
616 | * Reject event generation for when a CRTC is off and stays off. | |
617 | * It wouldn't be hard to implement this, but userspace has a track | |
618 | * record of happily burning through 100% cpu (or worse, crash) when the | |
619 | * display pipe is suspended. To avoid all that fun just reject updates | |
620 | * that ask for events since likely that indicates a bug in the | |
621 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
622 | * and legacy page_flip IOCTL which also reject service on a disabled | |
623 | * pipe. | |
624 | */ | |
625 | if (state->event && !state->active && !crtc->state->active) { | |
6ac7c548 RK |
626 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requesting event but off\n", |
627 | crtc->base.id, crtc->name); | |
4cba6850 DV |
628 | return -EINVAL; |
629 | } | |
630 | ||
5e743737 RC |
631 | return 0; |
632 | } | |
633 | ||
fceffb32 RC |
634 | static void drm_atomic_crtc_print_state(struct drm_printer *p, |
635 | const struct drm_crtc_state *state) | |
636 | { | |
637 | struct drm_crtc *crtc = state->crtc; | |
638 | ||
639 | drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name); | |
640 | drm_printf(p, "\tenable=%d\n", state->enable); | |
641 | drm_printf(p, "\tactive=%d\n", state->active); | |
642 | drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed); | |
643 | drm_printf(p, "\tmode_changed=%d\n", state->mode_changed); | |
644 | drm_printf(p, "\tactive_changed=%d\n", state->active_changed); | |
645 | drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed); | |
646 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); | |
647 | drm_printf(p, "\tplane_mask=%x\n", state->plane_mask); | |
648 | drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask); | |
649 | drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask); | |
650 | drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode)); | |
651 | ||
652 | if (crtc->funcs->atomic_print_state) | |
653 | crtc->funcs->atomic_print_state(p, state); | |
654 | } | |
655 | ||
cc4ceb48 DV |
656 | /** |
657 | * drm_atomic_get_plane_state - get plane state | |
658 | * @state: global atomic state object | |
659 | * @plane: plane to get state object for | |
660 | * | |
661 | * This function returns the plane state for the given plane, allocating it if | |
662 | * needed. It will also grab the relevant plane lock to make sure that the state | |
663 | * is consistent. | |
664 | * | |
665 | * Returns: | |
666 | * | |
667 | * Either the allocated state or the error code encoded into the pointer. When | |
668 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
669 | * entire atomic sequence must be restarted. All other errors are fatal. | |
670 | */ | |
671 | struct drm_plane_state * | |
672 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
673 | struct drm_plane *plane) | |
674 | { | |
1b26a5e1 | 675 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
676 | struct drm_plane_state *plane_state; |
677 | ||
7f4eaa89 ML |
678 | WARN_ON(!state->acquire_ctx); |
679 | ||
1b26a5e1 ML |
680 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
681 | if (plane_state) | |
682 | return plane_state; | |
cc4ceb48 | 683 | |
4d02e2de | 684 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
685 | if (ret) |
686 | return ERR_PTR(ret); | |
687 | ||
688 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
689 | if (!plane_state) | |
690 | return ERR_PTR(-ENOMEM); | |
691 | ||
b8b5342b DV |
692 | state->planes[index].state = plane_state; |
693 | state->planes[index].ptr = plane; | |
581e49fe ML |
694 | state->planes[index].old_state = plane->state; |
695 | state->planes[index].new_state = plane_state; | |
cc4ceb48 DV |
696 | plane_state->state = state; |
697 | ||
9f4c97a2 VS |
698 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
699 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
700 | |
701 | if (plane_state->crtc) { | |
702 | struct drm_crtc_state *crtc_state; | |
703 | ||
704 | crtc_state = drm_atomic_get_crtc_state(state, | |
705 | plane_state->crtc); | |
706 | if (IS_ERR(crtc_state)) | |
707 | return ERR_CAST(crtc_state); | |
708 | } | |
709 | ||
710 | return plane_state; | |
711 | } | |
712 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
713 | ||
40ecc694 RC |
714 | /** |
715 | * drm_atomic_plane_set_property - set property on plane | |
716 | * @plane: the drm plane to set a property on | |
717 | * @state: the state object to update with the new property value | |
718 | * @property: the property to set | |
719 | * @val: the new property value | |
720 | * | |
d574528a DV |
721 | * This function handles generic/core properties and calls out to driver's |
722 | * &drm_plane_funcs.atomic_set_property for driver properties. To ensure | |
723 | * consistent behavior you must call this function rather than the driver hook | |
724 | * directly. | |
40ecc694 RC |
725 | * |
726 | * RETURNS: | |
727 | * Zero on success, error code on failure | |
728 | */ | |
729 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
730 | struct drm_plane_state *state, struct drm_property *property, | |
731 | uint64_t val) | |
732 | { | |
6b4959f4 RC |
733 | struct drm_device *dev = plane->dev; |
734 | struct drm_mode_config *config = &dev->mode_config; | |
735 | ||
736 | if (property == config->prop_fb_id) { | |
737 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
738 | drm_atomic_set_fb_for_plane(state, fb); | |
739 | if (fb) | |
a4a69da0 | 740 | drm_framebuffer_put(fb); |
96260142 GP |
741 | } else if (property == config->prop_in_fence_fd) { |
742 | if (state->fence) | |
743 | return -EINVAL; | |
744 | ||
745 | if (U642I64(val) == -1) | |
746 | return 0; | |
747 | ||
748 | state->fence = sync_file_get_fence(val); | |
749 | if (!state->fence) | |
750 | return -EINVAL; | |
751 | ||
6b4959f4 RC |
752 | } else if (property == config->prop_crtc_id) { |
753 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
754 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
755 | } else if (property == config->prop_crtc_x) { | |
756 | state->crtc_x = U642I64(val); | |
757 | } else if (property == config->prop_crtc_y) { | |
758 | state->crtc_y = U642I64(val); | |
759 | } else if (property == config->prop_crtc_w) { | |
760 | state->crtc_w = val; | |
761 | } else if (property == config->prop_crtc_h) { | |
762 | state->crtc_h = val; | |
763 | } else if (property == config->prop_src_x) { | |
764 | state->src_x = val; | |
765 | } else if (property == config->prop_src_y) { | |
766 | state->src_y = val; | |
767 | } else if (property == config->prop_src_w) { | |
768 | state->src_w = val; | |
769 | } else if (property == config->prop_src_h) { | |
770 | state->src_h = val; | |
6686df8c | 771 | } else if (property == plane->rotation_property) { |
6e0c7c33 VS |
772 | if (!is_power_of_2(val & DRM_ROTATE_MASK)) |
773 | return -EINVAL; | |
1da30627 | 774 | state->rotation = val; |
44d1240d MS |
775 | } else if (property == plane->zpos_property) { |
776 | state->zpos = val; | |
6b4959f4 RC |
777 | } else if (plane->funcs->atomic_set_property) { |
778 | return plane->funcs->atomic_set_property(plane, state, | |
779 | property, val); | |
780 | } else { | |
781 | return -EINVAL; | |
782 | } | |
783 | ||
784 | return 0; | |
40ecc694 RC |
785 | } |
786 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
787 | ||
c0714fc9 DV |
788 | /** |
789 | * drm_atomic_plane_get_property - get property value from plane state | |
790 | * @plane: the drm plane to set a property on | |
791 | * @state: the state object to get the property value from | |
792 | * @property: the property to set | |
793 | * @val: return location for the property value | |
794 | * | |
d574528a DV |
795 | * This function handles generic/core properties and calls out to driver's |
796 | * &drm_plane_funcs.atomic_get_property for driver properties. To ensure | |
797 | * consistent behavior you must call this function rather than the driver hook | |
798 | * directly. | |
c0714fc9 DV |
799 | * |
800 | * RETURNS: | |
801 | * Zero on success, error code on failure | |
ac9c9256 | 802 | */ |
a97df1cc DV |
803 | static int |
804 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
805 | const struct drm_plane_state *state, |
806 | struct drm_property *property, uint64_t *val) | |
807 | { | |
6b4959f4 RC |
808 | struct drm_device *dev = plane->dev; |
809 | struct drm_mode_config *config = &dev->mode_config; | |
810 | ||
811 | if (property == config->prop_fb_id) { | |
812 | *val = (state->fb) ? state->fb->base.id : 0; | |
96260142 GP |
813 | } else if (property == config->prop_in_fence_fd) { |
814 | *val = -1; | |
6b4959f4 RC |
815 | } else if (property == config->prop_crtc_id) { |
816 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
817 | } else if (property == config->prop_crtc_x) { | |
818 | *val = I642U64(state->crtc_x); | |
819 | } else if (property == config->prop_crtc_y) { | |
820 | *val = I642U64(state->crtc_y); | |
821 | } else if (property == config->prop_crtc_w) { | |
822 | *val = state->crtc_w; | |
823 | } else if (property == config->prop_crtc_h) { | |
824 | *val = state->crtc_h; | |
825 | } else if (property == config->prop_src_x) { | |
826 | *val = state->src_x; | |
827 | } else if (property == config->prop_src_y) { | |
828 | *val = state->src_y; | |
829 | } else if (property == config->prop_src_w) { | |
830 | *val = state->src_w; | |
831 | } else if (property == config->prop_src_h) { | |
832 | *val = state->src_h; | |
6686df8c | 833 | } else if (property == plane->rotation_property) { |
4cda09ca | 834 | *val = state->rotation; |
44d1240d MS |
835 | } else if (property == plane->zpos_property) { |
836 | *val = state->zpos; | |
6b4959f4 | 837 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 838 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
839 | } else { |
840 | return -EINVAL; | |
841 | } | |
842 | ||
843 | return 0; | |
ac9c9256 | 844 | } |
ac9c9256 | 845 | |
f8aeb41c DV |
846 | static bool |
847 | plane_switching_crtc(struct drm_atomic_state *state, | |
848 | struct drm_plane *plane, | |
849 | struct drm_plane_state *plane_state) | |
850 | { | |
851 | if (!plane->state->crtc || !plane_state->crtc) | |
852 | return false; | |
853 | ||
854 | if (plane->state->crtc == plane_state->crtc) | |
855 | return false; | |
856 | ||
857 | /* This could be refined, but currently there's no helper or driver code | |
858 | * to implement direct switching of active planes nor userspace to take | |
859 | * advantage of more direct plane switching without the intermediate | |
860 | * full OFF state. | |
861 | */ | |
862 | return true; | |
863 | } | |
864 | ||
5e743737 RC |
865 | /** |
866 | * drm_atomic_plane_check - check plane state | |
867 | * @plane: plane to check | |
868 | * @state: plane state to check | |
869 | * | |
870 | * Provides core sanity checks for plane state. | |
871 | * | |
872 | * RETURNS: | |
873 | * Zero on success, error code on failure | |
874 | */ | |
875 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
876 | struct drm_plane_state *state) | |
877 | { | |
878 | unsigned int fb_width, fb_height; | |
ead8610d | 879 | int ret; |
5e743737 RC |
880 | |
881 | /* either *both* CRTC and FB must be set, or neither */ | |
882 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 883 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
884 | return -EINVAL; |
885 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 886 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
887 | return -EINVAL; |
888 | } | |
889 | ||
890 | /* if disabled, we don't care about the rest of the state: */ | |
891 | if (!state->crtc) | |
892 | return 0; | |
893 | ||
894 | /* Check whether this plane is usable on this CRTC */ | |
895 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 896 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
897 | return -EINVAL; |
898 | } | |
899 | ||
900 | /* Check whether this plane supports the fb pixel format. */ | |
438b74a5 | 901 | ret = drm_plane_check_pixel_format(plane, state->fb->format->format); |
ead8610d | 902 | if (ret) { |
b3c11ac2 EE |
903 | struct drm_format_name_buf format_name; |
904 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", | |
438b74a5 | 905 | drm_get_format_name(state->fb->format->format, |
b3c11ac2 | 906 | &format_name)); |
ead8610d | 907 | return ret; |
5e743737 RC |
908 | } |
909 | ||
910 | /* Give drivers some help against integer overflows */ | |
911 | if (state->crtc_w > INT_MAX || | |
912 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
913 | state->crtc_h > INT_MAX || | |
914 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
915 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
916 | state->crtc_w, state->crtc_h, | |
917 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
918 | return -ERANGE; |
919 | } | |
920 | ||
921 | fb_width = state->fb->width << 16; | |
922 | fb_height = state->fb->height << 16; | |
923 | ||
924 | /* Make sure source coordinates are inside the fb. */ | |
925 | if (state->src_w > fb_width || | |
926 | state->src_x > fb_width - state->src_w || | |
927 | state->src_h > fb_height || | |
928 | state->src_y > fb_height - state->src_h) { | |
17a38d9c DV |
929 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
930 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
931 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
932 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
933 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
934 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
5e743737 RC |
935 | return -ENOSPC; |
936 | } | |
937 | ||
f8aeb41c | 938 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
939 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
940 | plane->base.id, plane->name); | |
f8aeb41c DV |
941 | return -EINVAL; |
942 | } | |
943 | ||
5e743737 RC |
944 | return 0; |
945 | } | |
946 | ||
fceffb32 RC |
947 | static void drm_atomic_plane_print_state(struct drm_printer *p, |
948 | const struct drm_plane_state *state) | |
949 | { | |
950 | struct drm_plane *plane = state->plane; | |
951 | struct drm_rect src = drm_plane_state_src(state); | |
952 | struct drm_rect dest = drm_plane_state_dest(state); | |
953 | ||
954 | drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name); | |
955 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
956 | drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0); | |
957 | if (state->fb) { | |
958 | struct drm_framebuffer *fb = state->fb; | |
bcb0b461 | 959 | int i, n = fb->format->num_planes; |
b3c11ac2 | 960 | struct drm_format_name_buf format_name; |
fceffb32 RC |
961 | |
962 | drm_printf(p, "\t\tformat=%s\n", | |
438b74a5 | 963 | drm_get_format_name(fb->format->format, &format_name)); |
bae781b2 | 964 | drm_printf(p, "\t\t\tmodifier=0x%llx\n", fb->modifier); |
fceffb32 RC |
965 | drm_printf(p, "\t\tsize=%dx%d\n", fb->width, fb->height); |
966 | drm_printf(p, "\t\tlayers:\n"); | |
967 | for (i = 0; i < n; i++) { | |
968 | drm_printf(p, "\t\t\tpitch[%d]=%u\n", i, fb->pitches[i]); | |
969 | drm_printf(p, "\t\t\toffset[%d]=%u\n", i, fb->offsets[i]); | |
fceffb32 RC |
970 | } |
971 | } | |
972 | drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest)); | |
973 | drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src)); | |
974 | drm_printf(p, "\trotation=%x\n", state->rotation); | |
975 | ||
976 | if (plane->funcs->atomic_print_state) | |
977 | plane->funcs->atomic_print_state(p, state); | |
978 | } | |
979 | ||
cc4ceb48 DV |
980 | /** |
981 | * drm_atomic_get_connector_state - get connector state | |
982 | * @state: global atomic state object | |
983 | * @connector: connector to get state object for | |
984 | * | |
985 | * This function returns the connector state for the given connector, | |
986 | * allocating it if needed. It will also grab the relevant connector lock to | |
987 | * make sure that the state is consistent. | |
988 | * | |
989 | * Returns: | |
990 | * | |
991 | * Either the allocated state or the error code encoded into the pointer. When | |
992 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
993 | * entire atomic sequence must be restarted. All other errors are fatal. | |
994 | */ | |
995 | struct drm_connector_state * | |
996 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
997 | struct drm_connector *connector) | |
998 | { | |
999 | int ret, index; | |
1000 | struct drm_mode_config *config = &connector->dev->mode_config; | |
1001 | struct drm_connector_state *connector_state; | |
1002 | ||
7f4eaa89 ML |
1003 | WARN_ON(!state->acquire_ctx); |
1004 | ||
c7eb76f4 DV |
1005 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1006 | if (ret) | |
1007 | return ERR_PTR(ret); | |
1008 | ||
cc4ceb48 DV |
1009 | index = drm_connector_index(connector); |
1010 | ||
f52b69f1 | 1011 | if (index >= state->num_connector) { |
63e83c1d | 1012 | struct __drm_connnectors_state *c; |
5fff80bb ML |
1013 | int alloc = max(index + 1, config->num_connector); |
1014 | ||
1015 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
1016 | if (!c) | |
1017 | return ERR_PTR(-ENOMEM); | |
1018 | ||
1019 | state->connectors = c; | |
1020 | memset(&state->connectors[state->num_connector], 0, | |
1021 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
1022 | ||
5fff80bb | 1023 | state->num_connector = alloc; |
f52b69f1 DV |
1024 | } |
1025 | ||
63e83c1d DV |
1026 | if (state->connectors[index].state) |
1027 | return state->connectors[index].state; | |
cc4ceb48 | 1028 | |
cc4ceb48 DV |
1029 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
1030 | if (!connector_state) | |
1031 | return ERR_PTR(-ENOMEM); | |
1032 | ||
ad093607 | 1033 | drm_connector_get(connector); |
63e83c1d | 1034 | state->connectors[index].state = connector_state; |
581e49fe ML |
1035 | state->connectors[index].old_state = connector->state; |
1036 | state->connectors[index].new_state = connector_state; | |
63e83c1d | 1037 | state->connectors[index].ptr = connector; |
cc4ceb48 DV |
1038 | connector_state->state = state; |
1039 | ||
6ac7c548 RK |
1040 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d:%s] %p state to %p\n", |
1041 | connector->base.id, connector->name, | |
1042 | connector_state, state); | |
cc4ceb48 DV |
1043 | |
1044 | if (connector_state->crtc) { | |
1045 | struct drm_crtc_state *crtc_state; | |
1046 | ||
1047 | crtc_state = drm_atomic_get_crtc_state(state, | |
1048 | connector_state->crtc); | |
1049 | if (IS_ERR(crtc_state)) | |
1050 | return ERR_CAST(crtc_state); | |
1051 | } | |
1052 | ||
1053 | return connector_state; | |
1054 | } | |
1055 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
1056 | ||
40ecc694 RC |
1057 | /** |
1058 | * drm_atomic_connector_set_property - set property on connector. | |
1059 | * @connector: the drm connector to set a property on | |
1060 | * @state: the state object to update with the new property value | |
1061 | * @property: the property to set | |
1062 | * @val: the new property value | |
1063 | * | |
d574528a DV |
1064 | * This function handles generic/core properties and calls out to driver's |
1065 | * &drm_connector_funcs.atomic_set_property for driver properties. To ensure | |
1066 | * consistent behavior you must call this function rather than the driver hook | |
1067 | * directly. | |
40ecc694 RC |
1068 | * |
1069 | * RETURNS: | |
1070 | * Zero on success, error code on failure | |
1071 | */ | |
1072 | int drm_atomic_connector_set_property(struct drm_connector *connector, | |
1073 | struct drm_connector_state *state, struct drm_property *property, | |
1074 | uint64_t val) | |
1075 | { | |
1076 | struct drm_device *dev = connector->dev; | |
1077 | struct drm_mode_config *config = &dev->mode_config; | |
1078 | ||
ae16c597 RC |
1079 | if (property == config->prop_crtc_id) { |
1080 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
1081 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
1082 | } else if (property == config->dpms_property) { | |
40ecc694 RC |
1083 | /* setting DPMS property requires special handling, which |
1084 | * is done in legacy setprop path for us. Disallow (for | |
1085 | * now?) atomic writes to DPMS property: | |
1086 | */ | |
1087 | return -EINVAL; | |
299a16b1 BB |
1088 | } else if (property == config->tv_select_subconnector_property) { |
1089 | state->tv.subconnector = val; | |
1090 | } else if (property == config->tv_left_margin_property) { | |
1091 | state->tv.margins.left = val; | |
1092 | } else if (property == config->tv_right_margin_property) { | |
1093 | state->tv.margins.right = val; | |
1094 | } else if (property == config->tv_top_margin_property) { | |
1095 | state->tv.margins.top = val; | |
1096 | } else if (property == config->tv_bottom_margin_property) { | |
1097 | state->tv.margins.bottom = val; | |
1098 | } else if (property == config->tv_mode_property) { | |
1099 | state->tv.mode = val; | |
1100 | } else if (property == config->tv_brightness_property) { | |
1101 | state->tv.brightness = val; | |
1102 | } else if (property == config->tv_contrast_property) { | |
1103 | state->tv.contrast = val; | |
1104 | } else if (property == config->tv_flicker_reduction_property) { | |
1105 | state->tv.flicker_reduction = val; | |
1106 | } else if (property == config->tv_overscan_property) { | |
1107 | state->tv.overscan = val; | |
1108 | } else if (property == config->tv_saturation_property) { | |
1109 | state->tv.saturation = val; | |
1110 | } else if (property == config->tv_hue_property) { | |
1111 | state->tv.hue = val; | |
40ee6fbe MN |
1112 | } else if (property == config->link_status_property) { |
1113 | /* Never downgrade from GOOD to BAD on userspace's request here, | |
1114 | * only hw issues can do that. | |
1115 | * | |
1116 | * For an atomic property the userspace doesn't need to be able | |
1117 | * to understand all the properties, but needs to be able to | |
1118 | * restore the state it wants on VT switch. So if the userspace | |
1119 | * tries to change the link_status from GOOD to BAD, driver | |
1120 | * silently rejects it and returns a 0. This prevents userspace | |
1121 | * from accidently breaking the display when it restores the | |
1122 | * state. | |
1123 | */ | |
1124 | if (state->link_status != DRM_LINK_STATUS_GOOD) | |
1125 | state->link_status = val; | |
40ecc694 RC |
1126 | } else if (connector->funcs->atomic_set_property) { |
1127 | return connector->funcs->atomic_set_property(connector, | |
1128 | state, property, val); | |
1129 | } else { | |
1130 | return -EINVAL; | |
1131 | } | |
299a16b1 BB |
1132 | |
1133 | return 0; | |
40ecc694 RC |
1134 | } |
1135 | EXPORT_SYMBOL(drm_atomic_connector_set_property); | |
1136 | ||
fceffb32 RC |
1137 | static void drm_atomic_connector_print_state(struct drm_printer *p, |
1138 | const struct drm_connector_state *state) | |
1139 | { | |
1140 | struct drm_connector *connector = state->connector; | |
1141 | ||
1142 | drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name); | |
1143 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
1144 | ||
1145 | if (connector->funcs->atomic_print_state) | |
1146 | connector->funcs->atomic_print_state(p, state); | |
1147 | } | |
1148 | ||
c0714fc9 DV |
1149 | /** |
1150 | * drm_atomic_connector_get_property - get property value from connector state | |
1151 | * @connector: the drm connector to set a property on | |
1152 | * @state: the state object to get the property value from | |
1153 | * @property: the property to set | |
1154 | * @val: return location for the property value | |
1155 | * | |
d574528a DV |
1156 | * This function handles generic/core properties and calls out to driver's |
1157 | * &drm_connector_funcs.atomic_get_property for driver properties. To ensure | |
1158 | * consistent behavior you must call this function rather than the driver hook | |
1159 | * directly. | |
c0714fc9 DV |
1160 | * |
1161 | * RETURNS: | |
1162 | * Zero on success, error code on failure | |
ac9c9256 | 1163 | */ |
a97df1cc DV |
1164 | static int |
1165 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
ac9c9256 RC |
1166 | const struct drm_connector_state *state, |
1167 | struct drm_property *property, uint64_t *val) | |
1168 | { | |
1169 | struct drm_device *dev = connector->dev; | |
1170 | struct drm_mode_config *config = &dev->mode_config; | |
1171 | ||
ae16c597 RC |
1172 | if (property == config->prop_crtc_id) { |
1173 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
1174 | } else if (property == config->dpms_property) { | |
ac9c9256 | 1175 | *val = connector->dpms; |
299a16b1 BB |
1176 | } else if (property == config->tv_select_subconnector_property) { |
1177 | *val = state->tv.subconnector; | |
1178 | } else if (property == config->tv_left_margin_property) { | |
1179 | *val = state->tv.margins.left; | |
1180 | } else if (property == config->tv_right_margin_property) { | |
1181 | *val = state->tv.margins.right; | |
1182 | } else if (property == config->tv_top_margin_property) { | |
1183 | *val = state->tv.margins.top; | |
1184 | } else if (property == config->tv_bottom_margin_property) { | |
1185 | *val = state->tv.margins.bottom; | |
1186 | } else if (property == config->tv_mode_property) { | |
1187 | *val = state->tv.mode; | |
1188 | } else if (property == config->tv_brightness_property) { | |
1189 | *val = state->tv.brightness; | |
1190 | } else if (property == config->tv_contrast_property) { | |
1191 | *val = state->tv.contrast; | |
1192 | } else if (property == config->tv_flicker_reduction_property) { | |
1193 | *val = state->tv.flicker_reduction; | |
1194 | } else if (property == config->tv_overscan_property) { | |
1195 | *val = state->tv.overscan; | |
1196 | } else if (property == config->tv_saturation_property) { | |
1197 | *val = state->tv.saturation; | |
1198 | } else if (property == config->tv_hue_property) { | |
1199 | *val = state->tv.hue; | |
40ee6fbe MN |
1200 | } else if (property == config->link_status_property) { |
1201 | *val = state->link_status; | |
ac9c9256 RC |
1202 | } else if (connector->funcs->atomic_get_property) { |
1203 | return connector->funcs->atomic_get_property(connector, | |
1204 | state, property, val); | |
1205 | } else { | |
1206 | return -EINVAL; | |
1207 | } | |
1208 | ||
1209 | return 0; | |
1210 | } | |
ac9c9256 | 1211 | |
88a48e29 RC |
1212 | int drm_atomic_get_property(struct drm_mode_object *obj, |
1213 | struct drm_property *property, uint64_t *val) | |
1214 | { | |
1215 | struct drm_device *dev = property->dev; | |
1216 | int ret; | |
1217 | ||
1218 | switch (obj->type) { | |
1219 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1220 | struct drm_connector *connector = obj_to_connector(obj); | |
1221 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
1222 | ret = drm_atomic_connector_get_property(connector, | |
1223 | connector->state, property, val); | |
1224 | break; | |
1225 | } | |
1226 | case DRM_MODE_OBJECT_CRTC: { | |
1227 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1228 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
1229 | ret = drm_atomic_crtc_get_property(crtc, | |
1230 | crtc->state, property, val); | |
1231 | break; | |
1232 | } | |
1233 | case DRM_MODE_OBJECT_PLANE: { | |
1234 | struct drm_plane *plane = obj_to_plane(obj); | |
1235 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
1236 | ret = drm_atomic_plane_get_property(plane, | |
1237 | plane->state, property, val); | |
1238 | break; | |
1239 | } | |
1240 | default: | |
1241 | ret = -EINVAL; | |
1242 | break; | |
1243 | } | |
1244 | ||
1245 | return ret; | |
1246 | } | |
1247 | ||
cc4ceb48 DV |
1248 | /** |
1249 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
07cc0ef6 | 1250 | * @plane_state: the plane whose incoming state to update |
cc4ceb48 DV |
1251 | * @crtc: crtc to use for the plane |
1252 | * | |
1253 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
1254 | * for the new crtc, as needed. This function takes care of all these details | |
1255 | * besides updating the pointer in the state object itself. | |
1256 | * | |
1257 | * Returns: | |
1258 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1259 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1260 | * sequence must be restarted. All other errors are fatal. | |
1261 | */ | |
1262 | int | |
07cc0ef6 DV |
1263 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
1264 | struct drm_crtc *crtc) | |
cc4ceb48 | 1265 | { |
07cc0ef6 | 1266 | struct drm_plane *plane = plane_state->plane; |
cc4ceb48 DV |
1267 | struct drm_crtc_state *crtc_state; |
1268 | ||
6ddd388a RC |
1269 | if (plane_state->crtc) { |
1270 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1271 | plane_state->crtc); | |
1272 | if (WARN_ON(IS_ERR(crtc_state))) | |
1273 | return PTR_ERR(crtc_state); | |
1274 | ||
1275 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
1276 | } | |
1277 | ||
1278 | plane_state->crtc = crtc; | |
1279 | ||
cc4ceb48 DV |
1280 | if (crtc) { |
1281 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1282 | crtc); | |
1283 | if (IS_ERR(crtc_state)) | |
1284 | return PTR_ERR(crtc_state); | |
6ddd388a | 1285 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
cc4ceb48 DV |
1286 | } |
1287 | ||
cc4ceb48 | 1288 | if (crtc) |
fa3ab4c2 VS |
1289 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1290 | plane_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1291 | else |
17a38d9c DV |
1292 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1293 | plane_state); | |
cc4ceb48 DV |
1294 | |
1295 | return 0; | |
1296 | } | |
1297 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1298 | ||
321ebf04 | 1299 | /** |
16d78bc2 | 1300 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
321ebf04 DV |
1301 | * @plane_state: atomic state object for the plane |
1302 | * @fb: fb to use for the plane | |
1303 | * | |
1304 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1305 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1306 | * function takes care of all these details besides updating the pointer in the | |
1307 | * state object itself. | |
1308 | */ | |
1309 | void | |
1310 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1311 | struct drm_framebuffer *fb) | |
1312 | { | |
321ebf04 | 1313 | if (fb) |
17a38d9c DV |
1314 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1315 | fb->base.id, plane_state); | |
321ebf04 | 1316 | else |
17a38d9c DV |
1317 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1318 | plane_state); | |
389f78b3 CW |
1319 | |
1320 | drm_framebuffer_assign(&plane_state->fb, fb); | |
321ebf04 DV |
1321 | } |
1322 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1323 | ||
13b55664 GP |
1324 | /** |
1325 | * drm_atomic_set_fence_for_plane - set fence for plane | |
1326 | * @plane_state: atomic state object for the plane | |
1327 | * @fence: dma_fence to use for the plane | |
1328 | * | |
1329 | * Helper to setup the plane_state fence in case it is not set yet. | |
1330 | * By using this drivers doesn't need to worry if the user choose | |
1331 | * implicit or explicit fencing. | |
1332 | * | |
1333 | * This function will not set the fence to the state if it was set | |
d574528a DV |
1334 | * via explicit fencing interfaces on the atomic ioctl. In that case it will |
1335 | * drop the reference to the fence as we are not storing it anywhere. | |
1336 | * Otherwise, if &drm_plane_state.fence is not set this function we just set it | |
1337 | * with the received implicit fence. In both cases this function consumes a | |
1338 | * reference for @fence. | |
13b55664 GP |
1339 | */ |
1340 | void | |
1341 | drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state, | |
1342 | struct dma_fence *fence) | |
1343 | { | |
1344 | if (plane_state->fence) { | |
1345 | dma_fence_put(fence); | |
1346 | return; | |
1347 | } | |
1348 | ||
1349 | plane_state->fence = fence; | |
1350 | } | |
1351 | EXPORT_SYMBOL(drm_atomic_set_fence_for_plane); | |
1352 | ||
cc4ceb48 DV |
1353 | /** |
1354 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1355 | * @conn_state: atomic state object for the connector | |
1356 | * @crtc: crtc to use for the connector | |
1357 | * | |
1358 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1359 | * state for the new crtc, as needed. This function takes care of all these | |
1360 | * details besides updating the pointer in the state object itself. | |
1361 | * | |
1362 | * Returns: | |
1363 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1364 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1365 | * sequence must be restarted. All other errors are fatal. | |
1366 | */ | |
1367 | int | |
1368 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1369 | struct drm_crtc *crtc) | |
1370 | { | |
1371 | struct drm_crtc_state *crtc_state; | |
1372 | ||
e2d800a3 CW |
1373 | if (conn_state->crtc == crtc) |
1374 | return 0; | |
1375 | ||
1376 | if (conn_state->crtc) { | |
4cd9fa52 ML |
1377 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, |
1378 | conn_state->crtc); | |
1379 | ||
1380 | crtc_state->connector_mask &= | |
1381 | ~(1 << drm_connector_index(conn_state->connector)); | |
e2d800a3 | 1382 | |
ad093607 | 1383 | drm_connector_put(conn_state->connector); |
e2d800a3 | 1384 | conn_state->crtc = NULL; |
4cd9fa52 ML |
1385 | } |
1386 | ||
cc4ceb48 DV |
1387 | if (crtc) { |
1388 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1389 | if (IS_ERR(crtc_state)) | |
1390 | return PTR_ERR(crtc_state); | |
4cd9fa52 ML |
1391 | |
1392 | crtc_state->connector_mask |= | |
1393 | 1 << drm_connector_index(conn_state->connector); | |
cc4ceb48 | 1394 | |
ad093607 | 1395 | drm_connector_get(conn_state->connector); |
e2d800a3 | 1396 | conn_state->crtc = crtc; |
cc4ceb48 | 1397 | |
fa3ab4c2 VS |
1398 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1399 | conn_state, crtc->base.id, crtc->name); | |
e2d800a3 | 1400 | } else { |
17a38d9c DV |
1401 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1402 | conn_state); | |
e2d800a3 | 1403 | } |
cc4ceb48 DV |
1404 | |
1405 | return 0; | |
1406 | } | |
1407 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1408 | ||
1409 | /** | |
1410 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1411 | * @state: atomic state | |
1412 | * @crtc: DRM crtc | |
1413 | * | |
1414 | * This function walks the current configuration and adds all connectors | |
1415 | * currently using @crtc to the atomic configuration @state. Note that this | |
1416 | * function must acquire the connection mutex. This can potentially cause | |
1417 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1418 | * drivers and helpers should only call this when really needed (e.g. when a | |
1419 | * full modeset needs to happen due to some change). | |
1420 | * | |
1421 | * Returns: | |
1422 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1423 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1424 | * sequence must be restarted. All other errors are fatal. | |
1425 | */ | |
1426 | int | |
1427 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1428 | struct drm_crtc *crtc) | |
1429 | { | |
1430 | struct drm_mode_config *config = &state->dev->mode_config; | |
1431 | struct drm_connector *connector; | |
1432 | struct drm_connector_state *conn_state; | |
613051da | 1433 | struct drm_connector_list_iter conn_iter; |
5351bbdd | 1434 | struct drm_crtc_state *crtc_state; |
cc4ceb48 DV |
1435 | int ret; |
1436 | ||
5351bbdd ML |
1437 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
1438 | if (IS_ERR(crtc_state)) | |
1439 | return PTR_ERR(crtc_state); | |
1440 | ||
cc4ceb48 DV |
1441 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1442 | if (ret) | |
1443 | return ret; | |
1444 | ||
fa3ab4c2 VS |
1445 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1446 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1447 | |
1448 | /* | |
5351bbdd ML |
1449 | * Changed connectors are already in @state, so only need to look |
1450 | * at the connector_mask in crtc_state. | |
cc4ceb48 | 1451 | */ |
613051da DV |
1452 | drm_connector_list_iter_get(state->dev, &conn_iter); |
1453 | drm_for_each_connector_iter(connector, &conn_iter) { | |
5351bbdd | 1454 | if (!(crtc_state->connector_mask & (1 << drm_connector_index(connector)))) |
cc4ceb48 DV |
1455 | continue; |
1456 | ||
1457 | conn_state = drm_atomic_get_connector_state(state, connector); | |
613051da DV |
1458 | if (IS_ERR(conn_state)) { |
1459 | drm_connector_list_iter_put(&conn_iter); | |
cc4ceb48 | 1460 | return PTR_ERR(conn_state); |
613051da | 1461 | } |
cc4ceb48 | 1462 | } |
613051da | 1463 | drm_connector_list_iter_put(&conn_iter); |
cc4ceb48 DV |
1464 | |
1465 | return 0; | |
1466 | } | |
1467 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1468 | ||
e01e9f75 ML |
1469 | /** |
1470 | * drm_atomic_add_affected_planes - add planes for crtc | |
1471 | * @state: atomic state | |
1472 | * @crtc: DRM crtc | |
1473 | * | |
1474 | * This function walks the current configuration and adds all planes | |
1475 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1476 | * when an atomic commit also needs to check all currently enabled plane on | |
1477 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1478 | * to avoid special code to force-enable all planes. | |
1479 | * | |
1480 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1481 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1482 | * a CRTC will not reduce parallism of atomic updates. | |
1483 | * | |
1484 | * Returns: | |
1485 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1486 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1487 | * sequence must be restarted. All other errors are fatal. | |
1488 | */ | |
1489 | int | |
1490 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1491 | struct drm_crtc *crtc) | |
1492 | { | |
1493 | struct drm_plane *plane; | |
1494 | ||
1495 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1496 | ||
1497 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1498 | struct drm_plane_state *plane_state = | |
1499 | drm_atomic_get_plane_state(state, plane); | |
1500 | ||
1501 | if (IS_ERR(plane_state)) | |
1502 | return PTR_ERR(plane_state); | |
1503 | } | |
1504 | return 0; | |
1505 | } | |
1506 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1507 | ||
cc4ceb48 DV |
1508 | /** |
1509 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1510 | * @state: atomic state | |
1511 | * | |
1512 | * This function should be used by legacy entry points which don't understand | |
1513 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
16d78bc2 | 1514 | * the slowpath completed. |
cc4ceb48 DV |
1515 | */ |
1516 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1517 | { | |
81e257e9 ML |
1518 | struct drm_device *dev = state->dev; |
1519 | unsigned crtc_mask = 0; | |
1520 | struct drm_crtc *crtc; | |
cc4ceb48 | 1521 | int ret; |
81e257e9 ML |
1522 | bool global = false; |
1523 | ||
1524 | drm_for_each_crtc(crtc, dev) { | |
1525 | if (crtc->acquire_ctx != state->acquire_ctx) | |
1526 | continue; | |
1527 | ||
1528 | crtc_mask |= drm_crtc_mask(crtc); | |
1529 | crtc->acquire_ctx = NULL; | |
1530 | } | |
1531 | ||
1532 | if (WARN_ON(dev->mode_config.acquire_ctx == state->acquire_ctx)) { | |
1533 | global = true; | |
1534 | ||
1535 | dev->mode_config.acquire_ctx = NULL; | |
1536 | } | |
cc4ceb48 DV |
1537 | |
1538 | retry: | |
1539 | drm_modeset_backoff(state->acquire_ctx); | |
1540 | ||
81e257e9 | 1541 | ret = drm_modeset_lock_all_ctx(dev, state->acquire_ctx); |
cc4ceb48 DV |
1542 | if (ret) |
1543 | goto retry; | |
81e257e9 ML |
1544 | |
1545 | drm_for_each_crtc(crtc, dev) | |
1546 | if (drm_crtc_mask(crtc) & crtc_mask) | |
1547 | crtc->acquire_ctx = state->acquire_ctx; | |
1548 | ||
1549 | if (global) | |
1550 | dev->mode_config.acquire_ctx = state->acquire_ctx; | |
cc4ceb48 DV |
1551 | } |
1552 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1553 | ||
1554 | /** | |
1555 | * drm_atomic_check_only - check whether a given config would work | |
1556 | * @state: atomic configuration to check | |
1557 | * | |
1558 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1559 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1560 | * backoff dance and restart. All other errors are fatal. | |
1561 | * | |
1562 | * Returns: | |
1563 | * 0 on success, negative error code on failure. | |
1564 | */ | |
1565 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1566 | { | |
5e743737 RC |
1567 | struct drm_device *dev = state->dev; |
1568 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1569 | struct drm_plane *plane; |
1570 | struct drm_plane_state *plane_state; | |
1571 | struct drm_crtc *crtc; | |
1572 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1573 | int i, ret = 0; |
cc4ceb48 | 1574 | |
17a38d9c | 1575 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1576 | |
5721a380 | 1577 | for_each_new_plane_in_state(state, plane, plane_state, i) { |
df63b999 | 1578 | ret = drm_atomic_plane_check(plane, plane_state); |
5e743737 | 1579 | if (ret) { |
9f4c97a2 VS |
1580 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1581 | plane->base.id, plane->name); | |
5e743737 RC |
1582 | return ret; |
1583 | } | |
1584 | } | |
1585 | ||
5721a380 | 1586 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
df63b999 | 1587 | ret = drm_atomic_crtc_check(crtc, crtc_state); |
5e743737 | 1588 | if (ret) { |
fa3ab4c2 VS |
1589 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1590 | crtc->base.id, crtc->name); | |
5e743737 RC |
1591 | return ret; |
1592 | } | |
1593 | } | |
1594 | ||
cc4ceb48 | 1595 | if (config->funcs->atomic_check) |
5e743737 RC |
1596 | ret = config->funcs->atomic_check(state->dev, state); |
1597 | ||
d34f20d6 | 1598 | if (!state->allow_modeset) { |
5721a380 | 1599 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1600 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1601 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1602 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1603 | return -EINVAL; |
1604 | } | |
1605 | } | |
1606 | } | |
1607 | ||
5e743737 | 1608 | return ret; |
cc4ceb48 DV |
1609 | } |
1610 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1611 | ||
1612 | /** | |
1613 | * drm_atomic_commit - commit configuration atomically | |
1614 | * @state: atomic configuration to check | |
1615 | * | |
1616 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1617 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1618 | * backoff dance and restart. All other errors are fatal. | |
1619 | * | |
76fede2f ML |
1620 | * This function will take its own reference on @state. |
1621 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1622 | * |
1623 | * Returns: | |
1624 | * 0 on success, negative error code on failure. | |
1625 | */ | |
1626 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1627 | { | |
1628 | struct drm_mode_config *config = &state->dev->mode_config; | |
1629 | int ret; | |
1630 | ||
1631 | ret = drm_atomic_check_only(state); | |
1632 | if (ret) | |
1633 | return ret; | |
1634 | ||
17a38d9c | 1635 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
cc4ceb48 DV |
1636 | |
1637 | return config->funcs->atomic_commit(state->dev, state, false); | |
1638 | } | |
1639 | EXPORT_SYMBOL(drm_atomic_commit); | |
1640 | ||
1641 | /** | |
d574528a | 1642 | * drm_atomic_nonblocking_commit - atomic nonblocking commit |
cc4ceb48 DV |
1643 | * @state: atomic configuration to check |
1644 | * | |
1645 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1646 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1647 | * backoff dance and restart. All other errors are fatal. | |
1648 | * | |
76fede2f ML |
1649 | * This function will take its own reference on @state. |
1650 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1651 | * |
1652 | * Returns: | |
1653 | * 0 on success, negative error code on failure. | |
1654 | */ | |
b837ba0a | 1655 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1656 | { |
1657 | struct drm_mode_config *config = &state->dev->mode_config; | |
1658 | int ret; | |
1659 | ||
1660 | ret = drm_atomic_check_only(state); | |
1661 | if (ret) | |
1662 | return ret; | |
1663 | ||
b837ba0a | 1664 | DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state); |
cc4ceb48 DV |
1665 | |
1666 | return config->funcs->atomic_commit(state->dev, state, true); | |
1667 | } | |
b837ba0a | 1668 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 | 1669 | |
fceffb32 RC |
1670 | static void drm_atomic_print_state(const struct drm_atomic_state *state) |
1671 | { | |
1672 | struct drm_printer p = drm_info_printer(state->dev->dev); | |
1673 | struct drm_plane *plane; | |
1674 | struct drm_plane_state *plane_state; | |
1675 | struct drm_crtc *crtc; | |
1676 | struct drm_crtc_state *crtc_state; | |
1677 | struct drm_connector *connector; | |
1678 | struct drm_connector_state *connector_state; | |
1679 | int i; | |
1680 | ||
1681 | DRM_DEBUG_ATOMIC("checking %p\n", state); | |
1682 | ||
5721a380 | 1683 | for_each_new_plane_in_state(state, plane, plane_state, i) |
fceffb32 RC |
1684 | drm_atomic_plane_print_state(&p, plane_state); |
1685 | ||
5721a380 | 1686 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) |
fceffb32 RC |
1687 | drm_atomic_crtc_print_state(&p, crtc_state); |
1688 | ||
5721a380 | 1689 | for_each_new_connector_in_state(state, connector, connector_state, i) |
fceffb32 RC |
1690 | drm_atomic_connector_print_state(&p, connector_state); |
1691 | } | |
1692 | ||
6559c901 RC |
1693 | /** |
1694 | * drm_state_dump - dump entire device atomic state | |
1695 | * @dev: the drm device | |
1696 | * @p: where to print the state to | |
1697 | * | |
1698 | * Just for debugging. Drivers might want an option to dump state | |
1699 | * to dmesg in case of error irq's. (Hint, you probably want to | |
1700 | * ratelimit this!) | |
1701 | * | |
1702 | * The caller must drm_modeset_lock_all(), or if this is called | |
1703 | * from error irq handler, it should not be enabled by default. | |
1704 | * (Ie. if you are debugging errors you might not care that this | |
1705 | * is racey. But calling this without all modeset locks held is | |
1706 | * not inherently safe.) | |
1707 | */ | |
1708 | void drm_state_dump(struct drm_device *dev, struct drm_printer *p) | |
1709 | { | |
1710 | struct drm_mode_config *config = &dev->mode_config; | |
1711 | struct drm_plane *plane; | |
1712 | struct drm_crtc *crtc; | |
1713 | struct drm_connector *connector; | |
613051da | 1714 | struct drm_connector_list_iter conn_iter; |
6559c901 RC |
1715 | |
1716 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1717 | return; | |
1718 | ||
1719 | list_for_each_entry(plane, &config->plane_list, head) | |
1720 | drm_atomic_plane_print_state(p, plane->state); | |
1721 | ||
1722 | list_for_each_entry(crtc, &config->crtc_list, head) | |
1723 | drm_atomic_crtc_print_state(p, crtc->state); | |
1724 | ||
613051da DV |
1725 | drm_connector_list_iter_get(dev, &conn_iter); |
1726 | drm_for_each_connector_iter(connector, &conn_iter) | |
6559c901 | 1727 | drm_atomic_connector_print_state(p, connector->state); |
613051da | 1728 | drm_connector_list_iter_put(&conn_iter); |
6559c901 RC |
1729 | } |
1730 | EXPORT_SYMBOL(drm_state_dump); | |
1731 | ||
1732 | #ifdef CONFIG_DEBUG_FS | |
1733 | static int drm_state_info(struct seq_file *m, void *data) | |
1734 | { | |
1735 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
1736 | struct drm_device *dev = node->minor->dev; | |
1737 | struct drm_printer p = drm_seq_file_printer(m); | |
1738 | ||
1739 | drm_modeset_lock_all(dev); | |
1740 | drm_state_dump(dev, &p); | |
1741 | drm_modeset_unlock_all(dev); | |
1742 | ||
1743 | return 0; | |
1744 | } | |
1745 | ||
1746 | /* any use in debugfs files to dump individual planes/crtc/etc? */ | |
1747 | static const struct drm_info_list drm_atomic_debugfs_list[] = { | |
1748 | {"state", drm_state_info, 0}, | |
1749 | }; | |
1750 | ||
1751 | int drm_atomic_debugfs_init(struct drm_minor *minor) | |
1752 | { | |
1753 | return drm_debugfs_create_files(drm_atomic_debugfs_list, | |
1754 | ARRAY_SIZE(drm_atomic_debugfs_list), | |
1755 | minor->debugfs_root, minor); | |
1756 | } | |
1757 | #endif | |
1758 | ||
d34f20d6 RC |
1759 | /* |
1760 | * The big monstor ioctl | |
1761 | */ | |
1762 | ||
1763 | static struct drm_pending_vblank_event *create_vblank_event( | |
beaf5af4 | 1764 | struct drm_device *dev, uint64_t user_data) |
d34f20d6 RC |
1765 | { |
1766 | struct drm_pending_vblank_event *e = NULL; | |
d34f20d6 RC |
1767 | |
1768 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
2dd500f1 DV |
1769 | if (!e) |
1770 | return NULL; | |
d34f20d6 RC |
1771 | |
1772 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
2dd500f1 | 1773 | e->event.base.length = sizeof(e->event); |
d34f20d6 | 1774 | e->event.user_data = user_data; |
d34f20d6 | 1775 | |
2dd500f1 | 1776 | return e; |
d34f20d6 RC |
1777 | } |
1778 | ||
1779 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1780 | struct drm_mode_object *obj, struct drm_property *prop, | |
1781 | uint64_t prop_value) | |
1782 | { | |
1783 | struct drm_mode_object *ref; | |
1784 | int ret; | |
1785 | ||
1786 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1787 | return -EINVAL; | |
1788 | ||
1789 | switch (obj->type) { | |
1790 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1791 | struct drm_connector *connector = obj_to_connector(obj); | |
1792 | struct drm_connector_state *connector_state; | |
1793 | ||
1794 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1795 | if (IS_ERR(connector_state)) { | |
1796 | ret = PTR_ERR(connector_state); | |
1797 | break; | |
1798 | } | |
1799 | ||
1800 | ret = drm_atomic_connector_set_property(connector, | |
1801 | connector_state, prop, prop_value); | |
1802 | break; | |
1803 | } | |
1804 | case DRM_MODE_OBJECT_CRTC: { | |
1805 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1806 | struct drm_crtc_state *crtc_state; | |
1807 | ||
1808 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1809 | if (IS_ERR(crtc_state)) { | |
1810 | ret = PTR_ERR(crtc_state); | |
1811 | break; | |
1812 | } | |
1813 | ||
1814 | ret = drm_atomic_crtc_set_property(crtc, | |
1815 | crtc_state, prop, prop_value); | |
1816 | break; | |
1817 | } | |
1818 | case DRM_MODE_OBJECT_PLANE: { | |
1819 | struct drm_plane *plane = obj_to_plane(obj); | |
1820 | struct drm_plane_state *plane_state; | |
1821 | ||
1822 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1823 | if (IS_ERR(plane_state)) { | |
1824 | ret = PTR_ERR(plane_state); | |
1825 | break; | |
1826 | } | |
1827 | ||
1828 | ret = drm_atomic_plane_set_property(plane, | |
1829 | plane_state, prop, prop_value); | |
1830 | break; | |
1831 | } | |
1832 | default: | |
1833 | ret = -EINVAL; | |
1834 | break; | |
1835 | } | |
1836 | ||
1837 | drm_property_change_valid_put(prop, ref); | |
1838 | return ret; | |
1839 | } | |
1840 | ||
0f45c26f | 1841 | /** |
9744bf41 | 1842 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1843 | * |
1844 | * @dev: drm device to check. | |
1845 | * @plane_mask: plane mask for planes that were updated. | |
1846 | * @ret: return value, can be -EDEADLK for a retry. | |
1847 | * | |
d574528a DV |
1848 | * Before doing an update &drm_plane.old_fb is set to &drm_plane.fb, but before |
1849 | * dropping the locks old_fb needs to be set to NULL and plane->fb updated. This | |
1850 | * is a common operation for each atomic update, so this call is split off as a | |
1851 | * helper. | |
0f45c26f ML |
1852 | */ |
1853 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1854 | unsigned plane_mask, | |
1855 | int ret) | |
1856 | { | |
1857 | struct drm_plane *plane; | |
1858 | ||
1859 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1860 | * locks (ie. while it is still safe to deref plane->state). We | |
1861 | * need to do this here because the driver entry points cannot | |
1862 | * distinguish between legacy and atomic ioctls. | |
1863 | */ | |
1864 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1865 | if (ret == 0) { | |
1866 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1867 | if (new_fb) | |
a4a69da0 | 1868 | drm_framebuffer_get(new_fb); |
0f45c26f ML |
1869 | plane->fb = new_fb; |
1870 | plane->crtc = plane->state->crtc; | |
1871 | ||
1872 | if (plane->old_fb) | |
a4a69da0 | 1873 | drm_framebuffer_put(plane->old_fb); |
0f45c26f ML |
1874 | } |
1875 | plane->old_fb = NULL; | |
1876 | } | |
1877 | } | |
1878 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1879 | ||
9a83a71a GP |
1880 | /** |
1881 | * DOC: explicit fencing properties | |
1882 | * | |
1883 | * Explicit fencing allows userspace to control the buffer synchronization | |
1884 | * between devices. A Fence or a group of fences are transfered to/from | |
1885 | * userspace using Sync File fds and there are two DRM properties for that. | |
1886 | * IN_FENCE_FD on each DRM Plane to send fences to the kernel and | |
1887 | * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel. | |
1888 | * | |
1889 | * As a contrast, with implicit fencing the kernel keeps track of any | |
1890 | * ongoing rendering, and automatically ensures that the atomic update waits | |
1891 | * for any pending rendering to complete. For shared buffers represented with | |
d574528a | 1892 | * a &struct dma_buf this is tracked in &struct reservation_object. |
9a83a71a GP |
1893 | * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org), |
1894 | * whereas explicit fencing is what Android wants. | |
1895 | * | |
1896 | * "IN_FENCE_FD”: | |
1897 | * Use this property to pass a fence that DRM should wait on before | |
1898 | * proceeding with the Atomic Commit request and show the framebuffer for | |
1899 | * the plane on the screen. The fence can be either a normal fence or a | |
1900 | * merged one, the sync_file framework will handle both cases and use a | |
1901 | * fence_array if a merged fence is received. Passing -1 here means no | |
1902 | * fences to wait on. | |
1903 | * | |
1904 | * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag | |
1905 | * it will only check if the Sync File is a valid one. | |
1906 | * | |
1907 | * On the driver side the fence is stored on the @fence parameter of | |
ea0dd85a | 1908 | * &struct drm_plane_state. Drivers which also support implicit fencing |
9a83a71a GP |
1909 | * should set the implicit fence using drm_atomic_set_fence_for_plane(), |
1910 | * to make sure there's consistent behaviour between drivers in precedence | |
1911 | * of implicit vs. explicit fencing. | |
1912 | * | |
1913 | * "OUT_FENCE_PTR”: | |
1914 | * Use this property to pass a file descriptor pointer to DRM. Once the | |
1915 | * Atomic Commit request call returns OUT_FENCE_PTR will be filled with | |
1916 | * the file descriptor number of a Sync File. This Sync File contains the | |
1917 | * CRTC fence that will be signaled when all framebuffers present on the | |
1918 | * Atomic Commit * request for that given CRTC are scanned out on the | |
1919 | * screen. | |
1920 | * | |
1921 | * The Atomic Commit request fails if a invalid pointer is passed. If the | |
1922 | * Atomic Commit request fails for any other reason the out fence fd | |
1923 | * returned will be -1. On a Atomic Commit with the | |
1924 | * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1. | |
1925 | * | |
1926 | * Note that out-fences don't have a special interface to drivers and are | |
ea0dd85a | 1927 | * internally represented by a &struct drm_pending_vblank_event in struct |
9a83a71a GP |
1928 | * &drm_crtc_state, which is also used by the nonblocking atomic commit |
1929 | * helpers and for the DRM event handling for existing userspace. | |
1930 | */ | |
1931 | ||
beaf5af4 | 1932 | struct drm_out_fence_state { |
7e9081c5 | 1933 | s32 __user *out_fence_ptr; |
beaf5af4 GP |
1934 | struct sync_file *sync_file; |
1935 | int fd; | |
1936 | }; | |
1937 | ||
1938 | static int setup_out_fence(struct drm_out_fence_state *fence_state, | |
1939 | struct dma_fence *fence) | |
1940 | { | |
1941 | fence_state->fd = get_unused_fd_flags(O_CLOEXEC); | |
1942 | if (fence_state->fd < 0) | |
1943 | return fence_state->fd; | |
1944 | ||
1945 | if (put_user(fence_state->fd, fence_state->out_fence_ptr)) | |
1946 | return -EFAULT; | |
1947 | ||
1948 | fence_state->sync_file = sync_file_create(fence); | |
1949 | if (!fence_state->sync_file) | |
1950 | return -ENOMEM; | |
1951 | ||
1952 | return 0; | |
1953 | } | |
1954 | ||
1955 | static int prepare_crtc_signaling(struct drm_device *dev, | |
1956 | struct drm_atomic_state *state, | |
1957 | struct drm_mode_atomic *arg, | |
1958 | struct drm_file *file_priv, | |
1959 | struct drm_out_fence_state **fence_state, | |
1960 | unsigned int *num_fences) | |
1961 | { | |
1962 | struct drm_crtc *crtc; | |
1963 | struct drm_crtc_state *crtc_state; | |
1964 | int i, ret; | |
1965 | ||
1966 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) | |
1967 | return 0; | |
1968 | ||
5721a380 | 1969 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
7e9081c5 | 1970 | s32 __user *fence_ptr; |
beaf5af4 GP |
1971 | |
1972 | fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc); | |
1973 | ||
1974 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) { | |
1975 | struct drm_pending_vblank_event *e; | |
1976 | ||
1977 | e = create_vblank_event(dev, arg->user_data); | |
1978 | if (!e) | |
1979 | return -ENOMEM; | |
1980 | ||
1981 | crtc_state->event = e; | |
1982 | } | |
1983 | ||
1984 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1985 | struct drm_pending_vblank_event *e = crtc_state->event; | |
1986 | ||
1987 | if (!file_priv) | |
1988 | continue; | |
1989 | ||
1990 | ret = drm_event_reserve_init(dev, file_priv, &e->base, | |
1991 | &e->event.base); | |
1992 | if (ret) { | |
1993 | kfree(e); | |
1994 | crtc_state->event = NULL; | |
1995 | return ret; | |
1996 | } | |
1997 | } | |
1998 | ||
1999 | if (fence_ptr) { | |
2000 | struct dma_fence *fence; | |
2001 | struct drm_out_fence_state *f; | |
2002 | ||
2003 | f = krealloc(*fence_state, sizeof(**fence_state) * | |
2004 | (*num_fences + 1), GFP_KERNEL); | |
2005 | if (!f) | |
2006 | return -ENOMEM; | |
2007 | ||
2008 | memset(&f[*num_fences], 0, sizeof(*f)); | |
2009 | ||
2010 | f[*num_fences].out_fence_ptr = fence_ptr; | |
2011 | *fence_state = f; | |
2012 | ||
35f8cc3b | 2013 | fence = drm_crtc_create_fence(crtc); |
beaf5af4 GP |
2014 | if (!fence) |
2015 | return -ENOMEM; | |
2016 | ||
2017 | ret = setup_out_fence(&f[(*num_fences)++], fence); | |
2018 | if (ret) { | |
2019 | dma_fence_put(fence); | |
2020 | return ret; | |
2021 | } | |
2022 | ||
2023 | crtc_state->event->base.fence = fence; | |
2024 | } | |
2025 | } | |
2026 | ||
2027 | return 0; | |
2028 | } | |
2029 | ||
2030 | static void complete_crtc_signaling(struct drm_device *dev, | |
2031 | struct drm_atomic_state *state, | |
2032 | struct drm_out_fence_state *fence_state, | |
2033 | unsigned int num_fences, | |
2034 | bool install_fds) | |
2035 | { | |
2036 | struct drm_crtc *crtc; | |
2037 | struct drm_crtc_state *crtc_state; | |
2038 | int i; | |
2039 | ||
2040 | if (install_fds) { | |
2041 | for (i = 0; i < num_fences; i++) | |
2042 | fd_install(fence_state[i].fd, | |
2043 | fence_state[i].sync_file->file); | |
2044 | ||
2045 | kfree(fence_state); | |
2046 | return; | |
2047 | } | |
2048 | ||
5721a380 | 2049 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
92c715fc | 2050 | struct drm_pending_vblank_event *event = crtc_state->event; |
beaf5af4 | 2051 | /* |
92c715fc ML |
2052 | * Free the allocated event. drm_atomic_helper_setup_commit |
2053 | * can allocate an event too, so only free it if it's ours | |
2054 | * to prevent a double free in drm_atomic_state_clear. | |
beaf5af4 | 2055 | */ |
92c715fc ML |
2056 | if (event && (event->base.fence || event->base.file_priv)) { |
2057 | drm_event_cancel_free(dev, &event->base); | |
2058 | crtc_state->event = NULL; | |
2059 | } | |
beaf5af4 GP |
2060 | } |
2061 | ||
2062 | if (!fence_state) | |
2063 | return; | |
2064 | ||
2065 | for (i = 0; i < num_fences; i++) { | |
2066 | if (fence_state[i].sync_file) | |
2067 | fput(fence_state[i].sync_file->file); | |
2068 | if (fence_state[i].fd >= 0) | |
2069 | put_unused_fd(fence_state[i].fd); | |
2070 | ||
2071 | /* If this fails log error to the user */ | |
2072 | if (fence_state[i].out_fence_ptr && | |
2073 | put_user(-1, fence_state[i].out_fence_ptr)) | |
2074 | DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n"); | |
2075 | } | |
2076 | ||
2077 | kfree(fence_state); | |
2078 | } | |
2079 | ||
db8f6403 ML |
2080 | int drm_atomic_remove_fb(struct drm_framebuffer *fb) |
2081 | { | |
2082 | struct drm_modeset_acquire_ctx ctx; | |
2083 | struct drm_device *dev = fb->dev; | |
2084 | struct drm_atomic_state *state; | |
2085 | struct drm_plane *plane; | |
2086 | struct drm_connector *conn; | |
2087 | struct drm_connector_state *conn_state; | |
2088 | int i, ret = 0; | |
2089 | unsigned plane_mask; | |
2090 | ||
2091 | state = drm_atomic_state_alloc(dev); | |
2092 | if (!state) | |
2093 | return -ENOMEM; | |
2094 | ||
2095 | drm_modeset_acquire_init(&ctx, 0); | |
2096 | state->acquire_ctx = &ctx; | |
2097 | ||
2098 | retry: | |
2099 | plane_mask = 0; | |
2100 | ret = drm_modeset_lock_all_ctx(dev, &ctx); | |
2101 | if (ret) | |
2102 | goto unlock; | |
2103 | ||
2104 | drm_for_each_plane(plane, dev) { | |
2105 | struct drm_plane_state *plane_state; | |
2106 | ||
2107 | if (plane->state->fb != fb) | |
2108 | continue; | |
2109 | ||
2110 | plane_state = drm_atomic_get_plane_state(state, plane); | |
2111 | if (IS_ERR(plane_state)) { | |
2112 | ret = PTR_ERR(plane_state); | |
2113 | goto unlock; | |
2114 | } | |
2115 | ||
2116 | if (plane_state->crtc->primary == plane) { | |
2117 | struct drm_crtc_state *crtc_state; | |
2118 | ||
2119 | crtc_state = drm_atomic_get_existing_crtc_state(state, plane_state->crtc); | |
2120 | ||
2121 | ret = drm_atomic_add_affected_connectors(state, plane_state->crtc); | |
2122 | if (ret) | |
2123 | goto unlock; | |
2124 | ||
2125 | crtc_state->active = false; | |
2126 | ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL); | |
2127 | if (ret) | |
2128 | goto unlock; | |
2129 | } | |
2130 | ||
2131 | drm_atomic_set_fb_for_plane(plane_state, NULL); | |
2132 | ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); | |
2133 | if (ret) | |
2134 | goto unlock; | |
2135 | ||
2136 | plane_mask |= BIT(drm_plane_index(plane)); | |
2137 | ||
2138 | plane->old_fb = plane->fb; | |
2139 | } | |
2140 | ||
2141 | for_each_connector_in_state(state, conn, conn_state, i) { | |
2142 | ret = drm_atomic_set_crtc_for_connector(conn_state, NULL); | |
2143 | ||
2144 | if (ret) | |
2145 | goto unlock; | |
2146 | } | |
2147 | ||
2148 | if (plane_mask) | |
2149 | ret = drm_atomic_commit(state); | |
2150 | ||
2151 | unlock: | |
2152 | if (plane_mask) | |
2153 | drm_atomic_clean_old_fb(dev, plane_mask, ret); | |
2154 | ||
2155 | if (ret == -EDEADLK) { | |
2156 | drm_modeset_backoff(&ctx); | |
2157 | goto retry; | |
2158 | } | |
2159 | ||
2160 | drm_atomic_state_put(state); | |
2161 | ||
2162 | drm_modeset_drop_locks(&ctx); | |
2163 | drm_modeset_acquire_fini(&ctx); | |
2164 | ||
2165 | return ret; | |
2166 | } | |
2167 | ||
d34f20d6 RC |
2168 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
2169 | void *data, struct drm_file *file_priv) | |
2170 | { | |
2171 | struct drm_mode_atomic *arg = data; | |
2172 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
2173 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
2174 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
2175 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
2176 | unsigned int copied_objs, copied_props; | |
2177 | struct drm_atomic_state *state; | |
2178 | struct drm_modeset_acquire_ctx ctx; | |
2179 | struct drm_plane *plane; | |
beaf5af4 | 2180 | struct drm_out_fence_state *fence_state = NULL; |
45723728 | 2181 | unsigned plane_mask; |
d34f20d6 | 2182 | int ret = 0; |
beaf5af4 | 2183 | unsigned int i, j, num_fences = 0; |
d34f20d6 RC |
2184 | |
2185 | /* disallow for drivers not supporting atomic: */ | |
2186 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
2187 | return -EINVAL; | |
2188 | ||
2189 | /* disallow for userspace that has not enabled atomic cap (even | |
2190 | * though this may be a bit overkill, since legacy userspace | |
2191 | * wouldn't know how to call this ioctl) | |
2192 | */ | |
2193 | if (!file_priv->atomic) | |
2194 | return -EINVAL; | |
2195 | ||
2196 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
2197 | return -EINVAL; | |
2198 | ||
2199 | if (arg->reserved) | |
2200 | return -EINVAL; | |
2201 | ||
2202 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
2203 | !dev->mode_config.async_page_flip) | |
2204 | return -EINVAL; | |
2205 | ||
2206 | /* can't test and expect an event at the same time. */ | |
2207 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
2208 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
2209 | return -EINVAL; | |
2210 | ||
2211 | drm_modeset_acquire_init(&ctx, 0); | |
2212 | ||
2213 | state = drm_atomic_state_alloc(dev); | |
2214 | if (!state) | |
2215 | return -ENOMEM; | |
2216 | ||
2217 | state->acquire_ctx = &ctx; | |
2218 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
2219 | ||
2220 | retry: | |
45723728 | 2221 | plane_mask = 0; |
d34f20d6 RC |
2222 | copied_objs = 0; |
2223 | copied_props = 0; | |
2224 | ||
2225 | for (i = 0; i < arg->count_objs; i++) { | |
2226 | uint32_t obj_id, count_props; | |
2227 | struct drm_mode_object *obj; | |
2228 | ||
2229 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
2230 | ret = -EFAULT; | |
ec9f932e | 2231 | goto out; |
d34f20d6 RC |
2232 | } |
2233 | ||
2234 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
b164d31f DA |
2235 | if (!obj) { |
2236 | ret = -ENOENT; | |
2237 | goto out; | |
2238 | } | |
2239 | ||
2240 | if (!obj->properties) { | |
020a218f | 2241 | drm_mode_object_put(obj); |
d34f20d6 | 2242 | ret = -ENOENT; |
ec9f932e | 2243 | goto out; |
d34f20d6 RC |
2244 | } |
2245 | ||
d34f20d6 | 2246 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
020a218f | 2247 | drm_mode_object_put(obj); |
d34f20d6 | 2248 | ret = -EFAULT; |
ec9f932e | 2249 | goto out; |
d34f20d6 RC |
2250 | } |
2251 | ||
2252 | copied_objs++; | |
2253 | ||
2254 | for (j = 0; j < count_props; j++) { | |
2255 | uint32_t prop_id; | |
2256 | uint64_t prop_value; | |
2257 | struct drm_property *prop; | |
2258 | ||
2259 | if (get_user(prop_id, props_ptr + copied_props)) { | |
020a218f | 2260 | drm_mode_object_put(obj); |
d34f20d6 | 2261 | ret = -EFAULT; |
ec9f932e | 2262 | goto out; |
d34f20d6 RC |
2263 | } |
2264 | ||
f92f053b | 2265 | prop = drm_mode_obj_find_prop_id(obj, prop_id); |
d34f20d6 | 2266 | if (!prop) { |
020a218f | 2267 | drm_mode_object_put(obj); |
d34f20d6 | 2268 | ret = -ENOENT; |
ec9f932e | 2269 | goto out; |
d34f20d6 RC |
2270 | } |
2271 | ||
42c5814c GR |
2272 | if (copy_from_user(&prop_value, |
2273 | prop_values_ptr + copied_props, | |
2274 | sizeof(prop_value))) { | |
020a218f | 2275 | drm_mode_object_put(obj); |
d34f20d6 | 2276 | ret = -EFAULT; |
ec9f932e | 2277 | goto out; |
d34f20d6 RC |
2278 | } |
2279 | ||
2280 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
b164d31f | 2281 | if (ret) { |
020a218f | 2282 | drm_mode_object_put(obj); |
ec9f932e | 2283 | goto out; |
b164d31f | 2284 | } |
d34f20d6 RC |
2285 | |
2286 | copied_props++; | |
2287 | } | |
a9cc54ee | 2288 | |
c4749c9a ML |
2289 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
2290 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
2291 | plane = obj_to_plane(obj); |
2292 | plane_mask |= (1 << drm_plane_index(plane)); | |
2293 | plane->old_fb = plane->fb; | |
2294 | } | |
020a218f | 2295 | drm_mode_object_put(obj); |
d34f20d6 RC |
2296 | } |
2297 | ||
beaf5af4 GP |
2298 | ret = prepare_crtc_signaling(dev, state, arg, file_priv, &fence_state, |
2299 | &num_fences); | |
2300 | if (ret) | |
2301 | goto out; | |
d34f20d6 RC |
2302 | |
2303 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
2304 | ret = drm_atomic_check_only(state); | |
d34f20d6 | 2305 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
b837ba0a | 2306 | ret = drm_atomic_nonblocking_commit(state); |
d34f20d6 | 2307 | } else { |
fceffb32 RC |
2308 | if (unlikely(drm_debug & DRM_UT_STATE)) |
2309 | drm_atomic_print_state(state); | |
2310 | ||
d34f20d6 RC |
2311 | ret = drm_atomic_commit(state); |
2312 | } | |
2313 | ||
ec9f932e | 2314 | out: |
0f45c26f | 2315 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 2316 | |
beaf5af4 | 2317 | complete_crtc_signaling(dev, state, fence_state, num_fences, !ret); |
c4749c9a | 2318 | |
ec9f932e ML |
2319 | if (ret == -EDEADLK) { |
2320 | drm_atomic_state_clear(state); | |
2321 | drm_modeset_backoff(&ctx); | |
2322 | goto retry; | |
2323 | } | |
d34f20d6 | 2324 | |
0853695c | 2325 | drm_atomic_state_put(state); |
d34f20d6 RC |
2326 | |
2327 | drm_modeset_drop_locks(&ctx); | |
2328 | drm_modeset_acquire_fini(&ctx); | |
2329 | ||
2330 | return ret; | |
d34f20d6 | 2331 | } |