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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; | |
b164d31f | 153 | drm_connector_unreference(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 DV |
277 | state->crtcs[index].state = crtc_state; |
278 | state->crtcs[index].ptr = crtc; | |
cc4ceb48 DV |
279 | crtc_state->state = state; |
280 | ||
fa3ab4c2 VS |
281 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
282 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
283 | |
284 | return crtc_state; | |
285 | } | |
286 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
287 | ||
beaf5af4 GP |
288 | static void set_out_fence_for_crtc(struct drm_atomic_state *state, |
289 | struct drm_crtc *crtc, s64 __user *fence_ptr) | |
290 | { | |
291 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr; | |
292 | } | |
293 | ||
294 | static s64 __user *get_out_fence_for_crtc(struct drm_atomic_state *state, | |
295 | struct drm_crtc *crtc) | |
296 | { | |
297 | s64 __user *fence_ptr; | |
298 | ||
299 | fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr; | |
300 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL; | |
301 | ||
302 | return fence_ptr; | |
303 | } | |
304 | ||
819364da DS |
305 | /** |
306 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
307 | * @state: the CRTC whose incoming state to update | |
308 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
309 | * | |
310 | * Set a mode (originating from the kernel) on the desired CRTC state. Does | |
311 | * not change any other state properties, including enable, active, or | |
312 | * mode_changed. | |
313 | * | |
314 | * RETURNS: | |
315 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
316 | */ | |
317 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
318 | struct drm_display_mode *mode) | |
319 | { | |
99cf4a29 DS |
320 | struct drm_mode_modeinfo umode; |
321 | ||
819364da DS |
322 | /* Early return for no change. */ |
323 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
324 | return 0; | |
325 | ||
5f911905 | 326 | drm_property_unreference_blob(state->mode_blob); |
99cf4a29 DS |
327 | state->mode_blob = NULL; |
328 | ||
819364da | 329 | if (mode) { |
99cf4a29 DS |
330 | drm_mode_convert_to_umode(&umode, mode); |
331 | state->mode_blob = | |
332 | drm_property_create_blob(state->crtc->dev, | |
333 | sizeof(umode), | |
334 | &umode); | |
335 | if (IS_ERR(state->mode_blob)) | |
336 | return PTR_ERR(state->mode_blob); | |
337 | ||
819364da DS |
338 | drm_mode_copy(&state->mode, mode); |
339 | state->enable = true; | |
340 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
341 | mode->name, state); | |
342 | } else { | |
343 | memset(&state->mode, 0, sizeof(state->mode)); | |
344 | state->enable = false; | |
345 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
346 | state); | |
347 | } | |
348 | ||
349 | return 0; | |
350 | } | |
351 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
352 | ||
955f3c33 DS |
353 | /** |
354 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
355 | * @state: the CRTC whose incoming state to update | |
356 | * @blob: pointer to blob property to use for mode | |
357 | * | |
358 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
359 | * This function will take a reference on the blob property for the CRTC state, | |
360 | * and release the reference held on the state's existing mode property, if any | |
361 | * was set. | |
362 | * | |
363 | * RETURNS: | |
364 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
365 | */ | |
366 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
367 | struct drm_property_blob *blob) | |
368 | { | |
369 | if (blob == state->mode_blob) | |
370 | return 0; | |
371 | ||
5f911905 | 372 | drm_property_unreference_blob(state->mode_blob); |
955f3c33 DS |
373 | state->mode_blob = NULL; |
374 | ||
6709887c TV |
375 | memset(&state->mode, 0, sizeof(state->mode)); |
376 | ||
955f3c33 DS |
377 | if (blob) { |
378 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
379 | drm_mode_convert_umode(&state->mode, | |
380 | (const struct drm_mode_modeinfo *) | |
381 | blob->data)) | |
382 | return -EINVAL; | |
383 | ||
384 | state->mode_blob = drm_property_reference_blob(blob); | |
385 | state->enable = true; | |
386 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
387 | state->mode.name, state); | |
388 | } else { | |
955f3c33 DS |
389 | state->enable = false; |
390 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
391 | state); | |
392 | } | |
393 | ||
394 | return 0; | |
395 | } | |
396 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
397 | ||
5488dc16 LL |
398 | /** |
399 | * drm_atomic_replace_property_blob - replace a blob property | |
400 | * @blob: a pointer to the member blob to be replaced | |
401 | * @new_blob: the new blob to replace with | |
5488dc16 LL |
402 | * @replaced: whether the blob has been replaced |
403 | * | |
404 | * RETURNS: | |
405 | * Zero on success, error code on failure | |
406 | */ | |
407 | static void | |
408 | drm_atomic_replace_property_blob(struct drm_property_blob **blob, | |
409 | struct drm_property_blob *new_blob, | |
410 | bool *replaced) | |
411 | { | |
412 | struct drm_property_blob *old_blob = *blob; | |
413 | ||
414 | if (old_blob == new_blob) | |
415 | return; | |
416 | ||
f35cbe6a | 417 | drm_property_unreference_blob(old_blob); |
5488dc16 LL |
418 | if (new_blob) |
419 | drm_property_reference_blob(new_blob); | |
420 | *blob = new_blob; | |
421 | *replaced = true; | |
422 | ||
423 | return; | |
424 | } | |
425 | ||
426 | static int | |
427 | drm_atomic_replace_property_blob_from_id(struct drm_crtc *crtc, | |
428 | struct drm_property_blob **blob, | |
429 | uint64_t blob_id, | |
430 | ssize_t expected_size, | |
431 | bool *replaced) | |
432 | { | |
5488dc16 LL |
433 | struct drm_property_blob *new_blob = NULL; |
434 | ||
435 | if (blob_id != 0) { | |
cac5fced | 436 | new_blob = drm_property_lookup_blob(crtc->dev, blob_id); |
5488dc16 LL |
437 | if (new_blob == NULL) |
438 | return -EINVAL; | |
cac5fced FM |
439 | |
440 | if (expected_size > 0 && expected_size != new_blob->length) { | |
441 | drm_property_unreference_blob(new_blob); | |
5488dc16 | 442 | return -EINVAL; |
cac5fced | 443 | } |
5488dc16 LL |
444 | } |
445 | ||
446 | drm_atomic_replace_property_blob(blob, new_blob, replaced); | |
cac5fced | 447 | drm_property_unreference_blob(new_blob); |
5488dc16 LL |
448 | |
449 | return 0; | |
450 | } | |
451 | ||
40ecc694 RC |
452 | /** |
453 | * drm_atomic_crtc_set_property - set property on CRTC | |
454 | * @crtc: the drm CRTC to set a property on | |
455 | * @state: the state object to update with the new property value | |
456 | * @property: the property to set | |
457 | * @val: the new property value | |
458 | * | |
d574528a DV |
459 | * This function handles generic/core properties and calls out to driver's |
460 | * &drm_crtc_funcs.atomic_set_property for driver properties. To ensure | |
461 | * consistent behavior you must call this function rather than the driver hook | |
462 | * directly. | |
40ecc694 RC |
463 | * |
464 | * RETURNS: | |
465 | * Zero on success, error code on failure | |
466 | */ | |
467 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
468 | struct drm_crtc_state *state, struct drm_property *property, | |
469 | uint64_t val) | |
470 | { | |
eab3bbef DV |
471 | struct drm_device *dev = crtc->dev; |
472 | struct drm_mode_config *config = &dev->mode_config; | |
5488dc16 | 473 | bool replaced = false; |
955f3c33 | 474 | int ret; |
eab3bbef | 475 | |
27798365 | 476 | if (property == config->prop_active) |
eab3bbef | 477 | state->active = val; |
955f3c33 DS |
478 | else if (property == config->prop_mode_id) { |
479 | struct drm_property_blob *mode = | |
480 | drm_property_lookup_blob(dev, val); | |
481 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
5f911905 | 482 | drm_property_unreference_blob(mode); |
955f3c33 | 483 | return ret; |
5488dc16 LL |
484 | } else if (property == config->degamma_lut_property) { |
485 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
486 | &state->degamma_lut, | |
487 | val, | |
488 | -1, | |
489 | &replaced); | |
add1fa75 | 490 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
491 | return ret; |
492 | } else if (property == config->ctm_property) { | |
493 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
494 | &state->ctm, | |
495 | val, | |
496 | sizeof(struct drm_color_ctm), | |
497 | &replaced); | |
add1fa75 | 498 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
499 | return ret; |
500 | } else if (property == config->gamma_lut_property) { | |
501 | ret = drm_atomic_replace_property_blob_from_id(crtc, | |
502 | &state->gamma_lut, | |
503 | val, | |
504 | -1, | |
505 | &replaced); | |
add1fa75 | 506 | state->color_mgmt_changed |= replaced; |
5488dc16 | 507 | return ret; |
beaf5af4 GP |
508 | } else if (property == config->prop_out_fence_ptr) { |
509 | s64 __user *fence_ptr = u64_to_user_ptr(val); | |
510 | ||
511 | if (!fence_ptr) | |
512 | return 0; | |
513 | ||
514 | if (put_user(-1, fence_ptr)) | |
515 | return -EFAULT; | |
516 | ||
517 | set_out_fence_for_crtc(state->state, crtc, fence_ptr); | |
5488dc16 | 518 | } else if (crtc->funcs->atomic_set_property) |
40ecc694 | 519 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
27798365 DS |
520 | else |
521 | return -EINVAL; | |
522 | ||
523 | return 0; | |
40ecc694 RC |
524 | } |
525 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
526 | ||
c0714fc9 DV |
527 | /** |
528 | * drm_atomic_crtc_get_property - get property value from CRTC state | |
529 | * @crtc: the drm CRTC to set a property on | |
530 | * @state: the state object to get the property value from | |
531 | * @property: the property to set | |
532 | * @val: return location for the property value | |
533 | * | |
d574528a DV |
534 | * This function handles generic/core properties and calls out to driver's |
535 | * &drm_crtc_funcs.atomic_get_property for driver properties. To ensure | |
536 | * consistent behavior you must call this function rather than the driver hook | |
537 | * directly. | |
c0714fc9 DV |
538 | * |
539 | * RETURNS: | |
540 | * Zero on success, error code on failure | |
ac9c9256 | 541 | */ |
bf22f3be GT |
542 | static int |
543 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
ac9c9256 RC |
544 | const struct drm_crtc_state *state, |
545 | struct drm_property *property, uint64_t *val) | |
546 | { | |
8f164ce4 DS |
547 | struct drm_device *dev = crtc->dev; |
548 | struct drm_mode_config *config = &dev->mode_config; | |
549 | ||
550 | if (property == config->prop_active) | |
551 | *val = state->active; | |
955f3c33 DS |
552 | else if (property == config->prop_mode_id) |
553 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
5488dc16 LL |
554 | else if (property == config->degamma_lut_property) |
555 | *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; | |
556 | else if (property == config->ctm_property) | |
557 | *val = (state->ctm) ? state->ctm->base.id : 0; | |
558 | else if (property == config->gamma_lut_property) | |
559 | *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; | |
beaf5af4 GP |
560 | else if (property == config->prop_out_fence_ptr) |
561 | *val = 0; | |
8f164ce4 | 562 | else if (crtc->funcs->atomic_get_property) |
ac9c9256 | 563 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
8f164ce4 DS |
564 | else |
565 | return -EINVAL; | |
566 | ||
567 | return 0; | |
ac9c9256 | 568 | } |
ac9c9256 | 569 | |
5e743737 RC |
570 | /** |
571 | * drm_atomic_crtc_check - check crtc state | |
572 | * @crtc: crtc to check | |
573 | * @state: crtc state to check | |
574 | * | |
575 | * Provides core sanity checks for crtc state. | |
576 | * | |
577 | * RETURNS: | |
578 | * Zero on success, error code on failure | |
579 | */ | |
580 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
581 | struct drm_crtc_state *state) | |
582 | { | |
583 | /* NOTE: we explicitly don't enforce constraints such as primary | |
584 | * layer covering entire screen, since that is something we want | |
585 | * to allow (on hw that supports it). For hw that does not, it | |
586 | * should be checked in driver's crtc->atomic_check() vfunc. | |
587 | * | |
588 | * TODO: Add generic modeset state checks once we support those. | |
589 | */ | |
eab3bbef DV |
590 | |
591 | if (state->active && !state->enable) { | |
fa3ab4c2 VS |
592 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
593 | crtc->base.id, crtc->name); | |
eab3bbef DV |
594 | return -EINVAL; |
595 | } | |
596 | ||
99cf4a29 DS |
597 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
598 | * as this is a kernel-internal detail that userspace should never | |
599 | * be able to trigger. */ | |
600 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
601 | WARN_ON(state->enable && !state->mode_blob)) { | |
fa3ab4c2 VS |
602 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
603 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
604 | return -EINVAL; |
605 | } | |
606 | ||
607 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
608 | WARN_ON(!state->enable && state->mode_blob)) { | |
fa3ab4c2 VS |
609 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
610 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
611 | return -EINVAL; |
612 | } | |
613 | ||
4cba6850 DV |
614 | /* |
615 | * Reject event generation for when a CRTC is off and stays off. | |
616 | * It wouldn't be hard to implement this, but userspace has a track | |
617 | * record of happily burning through 100% cpu (or worse, crash) when the | |
618 | * display pipe is suspended. To avoid all that fun just reject updates | |
619 | * that ask for events since likely that indicates a bug in the | |
620 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
621 | * and legacy page_flip IOCTL which also reject service on a disabled | |
622 | * pipe. | |
623 | */ | |
624 | if (state->event && !state->active && !crtc->state->active) { | |
625 | DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n", | |
626 | crtc->base.id); | |
627 | return -EINVAL; | |
628 | } | |
629 | ||
5e743737 RC |
630 | return 0; |
631 | } | |
632 | ||
fceffb32 RC |
633 | static void drm_atomic_crtc_print_state(struct drm_printer *p, |
634 | const struct drm_crtc_state *state) | |
635 | { | |
636 | struct drm_crtc *crtc = state->crtc; | |
637 | ||
638 | drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name); | |
639 | drm_printf(p, "\tenable=%d\n", state->enable); | |
640 | drm_printf(p, "\tactive=%d\n", state->active); | |
641 | drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed); | |
642 | drm_printf(p, "\tmode_changed=%d\n", state->mode_changed); | |
643 | drm_printf(p, "\tactive_changed=%d\n", state->active_changed); | |
644 | drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed); | |
645 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); | |
646 | drm_printf(p, "\tplane_mask=%x\n", state->plane_mask); | |
647 | drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask); | |
648 | drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask); | |
649 | drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode)); | |
650 | ||
651 | if (crtc->funcs->atomic_print_state) | |
652 | crtc->funcs->atomic_print_state(p, state); | |
653 | } | |
654 | ||
cc4ceb48 DV |
655 | /** |
656 | * drm_atomic_get_plane_state - get plane state | |
657 | * @state: global atomic state object | |
658 | * @plane: plane to get state object for | |
659 | * | |
660 | * This function returns the plane state for the given plane, allocating it if | |
661 | * needed. It will also grab the relevant plane lock to make sure that the state | |
662 | * is consistent. | |
663 | * | |
664 | * Returns: | |
665 | * | |
666 | * Either the allocated state or the error code encoded into the pointer. When | |
667 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
668 | * entire atomic sequence must be restarted. All other errors are fatal. | |
669 | */ | |
670 | struct drm_plane_state * | |
671 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
672 | struct drm_plane *plane) | |
673 | { | |
1b26a5e1 | 674 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
675 | struct drm_plane_state *plane_state; |
676 | ||
7f4eaa89 ML |
677 | WARN_ON(!state->acquire_ctx); |
678 | ||
1b26a5e1 ML |
679 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
680 | if (plane_state) | |
681 | return plane_state; | |
cc4ceb48 | 682 | |
4d02e2de | 683 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
684 | if (ret) |
685 | return ERR_PTR(ret); | |
686 | ||
687 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
688 | if (!plane_state) | |
689 | return ERR_PTR(-ENOMEM); | |
690 | ||
b8b5342b DV |
691 | state->planes[index].state = plane_state; |
692 | state->planes[index].ptr = plane; | |
cc4ceb48 DV |
693 | plane_state->state = state; |
694 | ||
9f4c97a2 VS |
695 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
696 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
697 | |
698 | if (plane_state->crtc) { | |
699 | struct drm_crtc_state *crtc_state; | |
700 | ||
701 | crtc_state = drm_atomic_get_crtc_state(state, | |
702 | plane_state->crtc); | |
703 | if (IS_ERR(crtc_state)) | |
704 | return ERR_CAST(crtc_state); | |
705 | } | |
706 | ||
707 | return plane_state; | |
708 | } | |
709 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
710 | ||
40ecc694 RC |
711 | /** |
712 | * drm_atomic_plane_set_property - set property on plane | |
713 | * @plane: the drm plane to set a property on | |
714 | * @state: the state object to update with the new property value | |
715 | * @property: the property to set | |
716 | * @val: the new property value | |
717 | * | |
d574528a DV |
718 | * This function handles generic/core properties and calls out to driver's |
719 | * &drm_plane_funcs.atomic_set_property for driver properties. To ensure | |
720 | * consistent behavior you must call this function rather than the driver hook | |
721 | * directly. | |
40ecc694 RC |
722 | * |
723 | * RETURNS: | |
724 | * Zero on success, error code on failure | |
725 | */ | |
726 | int drm_atomic_plane_set_property(struct drm_plane *plane, | |
727 | struct drm_plane_state *state, struct drm_property *property, | |
728 | uint64_t val) | |
729 | { | |
6b4959f4 RC |
730 | struct drm_device *dev = plane->dev; |
731 | struct drm_mode_config *config = &dev->mode_config; | |
732 | ||
733 | if (property == config->prop_fb_id) { | |
734 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
735 | drm_atomic_set_fb_for_plane(state, fb); | |
736 | if (fb) | |
737 | drm_framebuffer_unreference(fb); | |
96260142 GP |
738 | } else if (property == config->prop_in_fence_fd) { |
739 | if (state->fence) | |
740 | return -EINVAL; | |
741 | ||
742 | if (U642I64(val) == -1) | |
743 | return 0; | |
744 | ||
745 | state->fence = sync_file_get_fence(val); | |
746 | if (!state->fence) | |
747 | return -EINVAL; | |
748 | ||
6b4959f4 RC |
749 | } else if (property == config->prop_crtc_id) { |
750 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
751 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
752 | } else if (property == config->prop_crtc_x) { | |
753 | state->crtc_x = U642I64(val); | |
754 | } else if (property == config->prop_crtc_y) { | |
755 | state->crtc_y = U642I64(val); | |
756 | } else if (property == config->prop_crtc_w) { | |
757 | state->crtc_w = val; | |
758 | } else if (property == config->prop_crtc_h) { | |
759 | state->crtc_h = val; | |
760 | } else if (property == config->prop_src_x) { | |
761 | state->src_x = val; | |
762 | } else if (property == config->prop_src_y) { | |
763 | state->src_y = val; | |
764 | } else if (property == config->prop_src_w) { | |
765 | state->src_w = val; | |
766 | } else if (property == config->prop_src_h) { | |
767 | state->src_h = val; | |
6686df8c | 768 | } else if (property == plane->rotation_property) { |
6e0c7c33 VS |
769 | if (!is_power_of_2(val & DRM_ROTATE_MASK)) |
770 | return -EINVAL; | |
1da30627 | 771 | state->rotation = val; |
44d1240d MS |
772 | } else if (property == plane->zpos_property) { |
773 | state->zpos = val; | |
6b4959f4 RC |
774 | } else if (plane->funcs->atomic_set_property) { |
775 | return plane->funcs->atomic_set_property(plane, state, | |
776 | property, val); | |
777 | } else { | |
778 | return -EINVAL; | |
779 | } | |
780 | ||
781 | return 0; | |
40ecc694 RC |
782 | } |
783 | EXPORT_SYMBOL(drm_atomic_plane_set_property); | |
784 | ||
c0714fc9 DV |
785 | /** |
786 | * drm_atomic_plane_get_property - get property value from plane state | |
787 | * @plane: the drm plane to set a property on | |
788 | * @state: the state object to get the property value from | |
789 | * @property: the property to set | |
790 | * @val: return location for the property value | |
791 | * | |
d574528a DV |
792 | * This function handles generic/core properties and calls out to driver's |
793 | * &drm_plane_funcs.atomic_get_property for driver properties. To ensure | |
794 | * consistent behavior you must call this function rather than the driver hook | |
795 | * directly. | |
c0714fc9 DV |
796 | * |
797 | * RETURNS: | |
798 | * Zero on success, error code on failure | |
ac9c9256 | 799 | */ |
a97df1cc DV |
800 | static int |
801 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
802 | const struct drm_plane_state *state, |
803 | struct drm_property *property, uint64_t *val) | |
804 | { | |
6b4959f4 RC |
805 | struct drm_device *dev = plane->dev; |
806 | struct drm_mode_config *config = &dev->mode_config; | |
807 | ||
808 | if (property == config->prop_fb_id) { | |
809 | *val = (state->fb) ? state->fb->base.id : 0; | |
96260142 GP |
810 | } else if (property == config->prop_in_fence_fd) { |
811 | *val = -1; | |
6b4959f4 RC |
812 | } else if (property == config->prop_crtc_id) { |
813 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
814 | } else if (property == config->prop_crtc_x) { | |
815 | *val = I642U64(state->crtc_x); | |
816 | } else if (property == config->prop_crtc_y) { | |
817 | *val = I642U64(state->crtc_y); | |
818 | } else if (property == config->prop_crtc_w) { | |
819 | *val = state->crtc_w; | |
820 | } else if (property == config->prop_crtc_h) { | |
821 | *val = state->crtc_h; | |
822 | } else if (property == config->prop_src_x) { | |
823 | *val = state->src_x; | |
824 | } else if (property == config->prop_src_y) { | |
825 | *val = state->src_y; | |
826 | } else if (property == config->prop_src_w) { | |
827 | *val = state->src_w; | |
828 | } else if (property == config->prop_src_h) { | |
829 | *val = state->src_h; | |
6686df8c | 830 | } else if (property == plane->rotation_property) { |
4cda09ca | 831 | *val = state->rotation; |
44d1240d MS |
832 | } else if (property == plane->zpos_property) { |
833 | *val = state->zpos; | |
6b4959f4 | 834 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 835 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
836 | } else { |
837 | return -EINVAL; | |
838 | } | |
839 | ||
840 | return 0; | |
ac9c9256 | 841 | } |
ac9c9256 | 842 | |
f8aeb41c DV |
843 | static bool |
844 | plane_switching_crtc(struct drm_atomic_state *state, | |
845 | struct drm_plane *plane, | |
846 | struct drm_plane_state *plane_state) | |
847 | { | |
848 | if (!plane->state->crtc || !plane_state->crtc) | |
849 | return false; | |
850 | ||
851 | if (plane->state->crtc == plane_state->crtc) | |
852 | return false; | |
853 | ||
854 | /* This could be refined, but currently there's no helper or driver code | |
855 | * to implement direct switching of active planes nor userspace to take | |
856 | * advantage of more direct plane switching without the intermediate | |
857 | * full OFF state. | |
858 | */ | |
859 | return true; | |
860 | } | |
861 | ||
5e743737 RC |
862 | /** |
863 | * drm_atomic_plane_check - check plane state | |
864 | * @plane: plane to check | |
865 | * @state: plane state to check | |
866 | * | |
867 | * Provides core sanity checks for plane state. | |
868 | * | |
869 | * RETURNS: | |
870 | * Zero on success, error code on failure | |
871 | */ | |
872 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
873 | struct drm_plane_state *state) | |
874 | { | |
875 | unsigned int fb_width, fb_height; | |
ead8610d | 876 | int ret; |
5e743737 RC |
877 | |
878 | /* either *both* CRTC and FB must be set, or neither */ | |
879 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 880 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
881 | return -EINVAL; |
882 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 883 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
884 | return -EINVAL; |
885 | } | |
886 | ||
887 | /* if disabled, we don't care about the rest of the state: */ | |
888 | if (!state->crtc) | |
889 | return 0; | |
890 | ||
891 | /* Check whether this plane is usable on this CRTC */ | |
892 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 893 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
894 | return -EINVAL; |
895 | } | |
896 | ||
897 | /* Check whether this plane supports the fb pixel format. */ | |
438b74a5 | 898 | ret = drm_plane_check_pixel_format(plane, state->fb->format->format); |
ead8610d | 899 | if (ret) { |
b3c11ac2 EE |
900 | struct drm_format_name_buf format_name; |
901 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", | |
438b74a5 | 902 | drm_get_format_name(state->fb->format->format, |
b3c11ac2 | 903 | &format_name)); |
ead8610d | 904 | return ret; |
5e743737 RC |
905 | } |
906 | ||
907 | /* Give drivers some help against integer overflows */ | |
908 | if (state->crtc_w > INT_MAX || | |
909 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
910 | state->crtc_h > INT_MAX || | |
911 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
912 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
913 | state->crtc_w, state->crtc_h, | |
914 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
915 | return -ERANGE; |
916 | } | |
917 | ||
918 | fb_width = state->fb->width << 16; | |
919 | fb_height = state->fb->height << 16; | |
920 | ||
921 | /* Make sure source coordinates are inside the fb. */ | |
922 | if (state->src_w > fb_width || | |
923 | state->src_x > fb_width - state->src_w || | |
924 | state->src_h > fb_height || | |
925 | state->src_y > fb_height - state->src_h) { | |
17a38d9c DV |
926 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
927 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
928 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, | |
929 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
930 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
931 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10); | |
5e743737 RC |
932 | return -ENOSPC; |
933 | } | |
934 | ||
f8aeb41c | 935 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
936 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
937 | plane->base.id, plane->name); | |
f8aeb41c DV |
938 | return -EINVAL; |
939 | } | |
940 | ||
5e743737 RC |
941 | return 0; |
942 | } | |
943 | ||
fceffb32 RC |
944 | static void drm_atomic_plane_print_state(struct drm_printer *p, |
945 | const struct drm_plane_state *state) | |
946 | { | |
947 | struct drm_plane *plane = state->plane; | |
948 | struct drm_rect src = drm_plane_state_src(state); | |
949 | struct drm_rect dest = drm_plane_state_dest(state); | |
950 | ||
951 | drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name); | |
952 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
953 | drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0); | |
954 | if (state->fb) { | |
955 | struct drm_framebuffer *fb = state->fb; | |
bcb0b461 | 956 | int i, n = fb->format->num_planes; |
b3c11ac2 | 957 | struct drm_format_name_buf format_name; |
fceffb32 RC |
958 | |
959 | drm_printf(p, "\t\tformat=%s\n", | |
438b74a5 | 960 | drm_get_format_name(fb->format->format, &format_name)); |
bae781b2 | 961 | drm_printf(p, "\t\t\tmodifier=0x%llx\n", fb->modifier); |
fceffb32 RC |
962 | drm_printf(p, "\t\tsize=%dx%d\n", fb->width, fb->height); |
963 | drm_printf(p, "\t\tlayers:\n"); | |
964 | for (i = 0; i < n; i++) { | |
965 | drm_printf(p, "\t\t\tpitch[%d]=%u\n", i, fb->pitches[i]); | |
966 | drm_printf(p, "\t\t\toffset[%d]=%u\n", i, fb->offsets[i]); | |
fceffb32 RC |
967 | } |
968 | } | |
969 | drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest)); | |
970 | drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src)); | |
971 | drm_printf(p, "\trotation=%x\n", state->rotation); | |
972 | ||
973 | if (plane->funcs->atomic_print_state) | |
974 | plane->funcs->atomic_print_state(p, state); | |
975 | } | |
976 | ||
cc4ceb48 DV |
977 | /** |
978 | * drm_atomic_get_connector_state - get connector state | |
979 | * @state: global atomic state object | |
980 | * @connector: connector to get state object for | |
981 | * | |
982 | * This function returns the connector state for the given connector, | |
983 | * allocating it if needed. It will also grab the relevant connector lock to | |
984 | * make sure that the state is consistent. | |
985 | * | |
986 | * Returns: | |
987 | * | |
988 | * Either the allocated state or the error code encoded into the pointer. When | |
989 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
990 | * entire atomic sequence must be restarted. All other errors are fatal. | |
991 | */ | |
992 | struct drm_connector_state * | |
993 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
994 | struct drm_connector *connector) | |
995 | { | |
996 | int ret, index; | |
997 | struct drm_mode_config *config = &connector->dev->mode_config; | |
998 | struct drm_connector_state *connector_state; | |
999 | ||
7f4eaa89 ML |
1000 | WARN_ON(!state->acquire_ctx); |
1001 | ||
c7eb76f4 DV |
1002 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1003 | if (ret) | |
1004 | return ERR_PTR(ret); | |
1005 | ||
cc4ceb48 DV |
1006 | index = drm_connector_index(connector); |
1007 | ||
f52b69f1 | 1008 | if (index >= state->num_connector) { |
63e83c1d | 1009 | struct __drm_connnectors_state *c; |
5fff80bb ML |
1010 | int alloc = max(index + 1, config->num_connector); |
1011 | ||
1012 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
1013 | if (!c) | |
1014 | return ERR_PTR(-ENOMEM); | |
1015 | ||
1016 | state->connectors = c; | |
1017 | memset(&state->connectors[state->num_connector], 0, | |
1018 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
1019 | ||
5fff80bb | 1020 | state->num_connector = alloc; |
f52b69f1 DV |
1021 | } |
1022 | ||
63e83c1d DV |
1023 | if (state->connectors[index].state) |
1024 | return state->connectors[index].state; | |
cc4ceb48 | 1025 | |
cc4ceb48 DV |
1026 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
1027 | if (!connector_state) | |
1028 | return ERR_PTR(-ENOMEM); | |
1029 | ||
b164d31f | 1030 | drm_connector_reference(connector); |
63e83c1d DV |
1031 | state->connectors[index].state = connector_state; |
1032 | state->connectors[index].ptr = connector; | |
cc4ceb48 DV |
1033 | connector_state->state = state; |
1034 | ||
17a38d9c DV |
1035 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d] %p state to %p\n", |
1036 | connector->base.id, connector_state, state); | |
cc4ceb48 DV |
1037 | |
1038 | if (connector_state->crtc) { | |
1039 | struct drm_crtc_state *crtc_state; | |
1040 | ||
1041 | crtc_state = drm_atomic_get_crtc_state(state, | |
1042 | connector_state->crtc); | |
1043 | if (IS_ERR(crtc_state)) | |
1044 | return ERR_CAST(crtc_state); | |
1045 | } | |
1046 | ||
1047 | return connector_state; | |
1048 | } | |
1049 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
1050 | ||
40ecc694 RC |
1051 | /** |
1052 | * drm_atomic_connector_set_property - set property on connector. | |
1053 | * @connector: the drm connector to set a property on | |
1054 | * @state: the state object to update with the new property value | |
1055 | * @property: the property to set | |
1056 | * @val: the new property value | |
1057 | * | |
d574528a DV |
1058 | * This function handles generic/core properties and calls out to driver's |
1059 | * &drm_connector_funcs.atomic_set_property for driver properties. To ensure | |
1060 | * consistent behavior you must call this function rather than the driver hook | |
1061 | * directly. | |
40ecc694 RC |
1062 | * |
1063 | * RETURNS: | |
1064 | * Zero on success, error code on failure | |
1065 | */ | |
1066 | int drm_atomic_connector_set_property(struct drm_connector *connector, | |
1067 | struct drm_connector_state *state, struct drm_property *property, | |
1068 | uint64_t val) | |
1069 | { | |
1070 | struct drm_device *dev = connector->dev; | |
1071 | struct drm_mode_config *config = &dev->mode_config; | |
1072 | ||
ae16c597 RC |
1073 | if (property == config->prop_crtc_id) { |
1074 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
1075 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
1076 | } else if (property == config->dpms_property) { | |
40ecc694 RC |
1077 | /* setting DPMS property requires special handling, which |
1078 | * is done in legacy setprop path for us. Disallow (for | |
1079 | * now?) atomic writes to DPMS property: | |
1080 | */ | |
1081 | return -EINVAL; | |
299a16b1 BB |
1082 | } else if (property == config->tv_select_subconnector_property) { |
1083 | state->tv.subconnector = val; | |
1084 | } else if (property == config->tv_left_margin_property) { | |
1085 | state->tv.margins.left = val; | |
1086 | } else if (property == config->tv_right_margin_property) { | |
1087 | state->tv.margins.right = val; | |
1088 | } else if (property == config->tv_top_margin_property) { | |
1089 | state->tv.margins.top = val; | |
1090 | } else if (property == config->tv_bottom_margin_property) { | |
1091 | state->tv.margins.bottom = val; | |
1092 | } else if (property == config->tv_mode_property) { | |
1093 | state->tv.mode = val; | |
1094 | } else if (property == config->tv_brightness_property) { | |
1095 | state->tv.brightness = val; | |
1096 | } else if (property == config->tv_contrast_property) { | |
1097 | state->tv.contrast = val; | |
1098 | } else if (property == config->tv_flicker_reduction_property) { | |
1099 | state->tv.flicker_reduction = val; | |
1100 | } else if (property == config->tv_overscan_property) { | |
1101 | state->tv.overscan = val; | |
1102 | } else if (property == config->tv_saturation_property) { | |
1103 | state->tv.saturation = val; | |
1104 | } else if (property == config->tv_hue_property) { | |
1105 | state->tv.hue = val; | |
40ecc694 RC |
1106 | } else if (connector->funcs->atomic_set_property) { |
1107 | return connector->funcs->atomic_set_property(connector, | |
1108 | state, property, val); | |
1109 | } else { | |
1110 | return -EINVAL; | |
1111 | } | |
299a16b1 BB |
1112 | |
1113 | return 0; | |
40ecc694 RC |
1114 | } |
1115 | EXPORT_SYMBOL(drm_atomic_connector_set_property); | |
1116 | ||
fceffb32 RC |
1117 | static void drm_atomic_connector_print_state(struct drm_printer *p, |
1118 | const struct drm_connector_state *state) | |
1119 | { | |
1120 | struct drm_connector *connector = state->connector; | |
1121 | ||
1122 | drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name); | |
1123 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
1124 | ||
1125 | if (connector->funcs->atomic_print_state) | |
1126 | connector->funcs->atomic_print_state(p, state); | |
1127 | } | |
1128 | ||
c0714fc9 DV |
1129 | /** |
1130 | * drm_atomic_connector_get_property - get property value from connector state | |
1131 | * @connector: the drm connector to set a property on | |
1132 | * @state: the state object to get the property value from | |
1133 | * @property: the property to set | |
1134 | * @val: return location for the property value | |
1135 | * | |
d574528a DV |
1136 | * This function handles generic/core properties and calls out to driver's |
1137 | * &drm_connector_funcs.atomic_get_property for driver properties. To ensure | |
1138 | * consistent behavior you must call this function rather than the driver hook | |
1139 | * directly. | |
c0714fc9 DV |
1140 | * |
1141 | * RETURNS: | |
1142 | * Zero on success, error code on failure | |
ac9c9256 | 1143 | */ |
a97df1cc DV |
1144 | static int |
1145 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
ac9c9256 RC |
1146 | const struct drm_connector_state *state, |
1147 | struct drm_property *property, uint64_t *val) | |
1148 | { | |
1149 | struct drm_device *dev = connector->dev; | |
1150 | struct drm_mode_config *config = &dev->mode_config; | |
1151 | ||
ae16c597 RC |
1152 | if (property == config->prop_crtc_id) { |
1153 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
1154 | } else if (property == config->dpms_property) { | |
ac9c9256 | 1155 | *val = connector->dpms; |
299a16b1 BB |
1156 | } else if (property == config->tv_select_subconnector_property) { |
1157 | *val = state->tv.subconnector; | |
1158 | } else if (property == config->tv_left_margin_property) { | |
1159 | *val = state->tv.margins.left; | |
1160 | } else if (property == config->tv_right_margin_property) { | |
1161 | *val = state->tv.margins.right; | |
1162 | } else if (property == config->tv_top_margin_property) { | |
1163 | *val = state->tv.margins.top; | |
1164 | } else if (property == config->tv_bottom_margin_property) { | |
1165 | *val = state->tv.margins.bottom; | |
1166 | } else if (property == config->tv_mode_property) { | |
1167 | *val = state->tv.mode; | |
1168 | } else if (property == config->tv_brightness_property) { | |
1169 | *val = state->tv.brightness; | |
1170 | } else if (property == config->tv_contrast_property) { | |
1171 | *val = state->tv.contrast; | |
1172 | } else if (property == config->tv_flicker_reduction_property) { | |
1173 | *val = state->tv.flicker_reduction; | |
1174 | } else if (property == config->tv_overscan_property) { | |
1175 | *val = state->tv.overscan; | |
1176 | } else if (property == config->tv_saturation_property) { | |
1177 | *val = state->tv.saturation; | |
1178 | } else if (property == config->tv_hue_property) { | |
1179 | *val = state->tv.hue; | |
ac9c9256 RC |
1180 | } else if (connector->funcs->atomic_get_property) { |
1181 | return connector->funcs->atomic_get_property(connector, | |
1182 | state, property, val); | |
1183 | } else { | |
1184 | return -EINVAL; | |
1185 | } | |
1186 | ||
1187 | return 0; | |
1188 | } | |
ac9c9256 | 1189 | |
88a48e29 RC |
1190 | int drm_atomic_get_property(struct drm_mode_object *obj, |
1191 | struct drm_property *property, uint64_t *val) | |
1192 | { | |
1193 | struct drm_device *dev = property->dev; | |
1194 | int ret; | |
1195 | ||
1196 | switch (obj->type) { | |
1197 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1198 | struct drm_connector *connector = obj_to_connector(obj); | |
1199 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
1200 | ret = drm_atomic_connector_get_property(connector, | |
1201 | connector->state, property, val); | |
1202 | break; | |
1203 | } | |
1204 | case DRM_MODE_OBJECT_CRTC: { | |
1205 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1206 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
1207 | ret = drm_atomic_crtc_get_property(crtc, | |
1208 | crtc->state, property, val); | |
1209 | break; | |
1210 | } | |
1211 | case DRM_MODE_OBJECT_PLANE: { | |
1212 | struct drm_plane *plane = obj_to_plane(obj); | |
1213 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
1214 | ret = drm_atomic_plane_get_property(plane, | |
1215 | plane->state, property, val); | |
1216 | break; | |
1217 | } | |
1218 | default: | |
1219 | ret = -EINVAL; | |
1220 | break; | |
1221 | } | |
1222 | ||
1223 | return ret; | |
1224 | } | |
1225 | ||
cc4ceb48 DV |
1226 | /** |
1227 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
07cc0ef6 | 1228 | * @plane_state: the plane whose incoming state to update |
cc4ceb48 DV |
1229 | * @crtc: crtc to use for the plane |
1230 | * | |
1231 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
1232 | * for the new crtc, as needed. This function takes care of all these details | |
1233 | * besides updating the pointer in the state object itself. | |
1234 | * | |
1235 | * Returns: | |
1236 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1237 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1238 | * sequence must be restarted. All other errors are fatal. | |
1239 | */ | |
1240 | int | |
07cc0ef6 DV |
1241 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
1242 | struct drm_crtc *crtc) | |
cc4ceb48 | 1243 | { |
07cc0ef6 | 1244 | struct drm_plane *plane = plane_state->plane; |
cc4ceb48 DV |
1245 | struct drm_crtc_state *crtc_state; |
1246 | ||
6ddd388a RC |
1247 | if (plane_state->crtc) { |
1248 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1249 | plane_state->crtc); | |
1250 | if (WARN_ON(IS_ERR(crtc_state))) | |
1251 | return PTR_ERR(crtc_state); | |
1252 | ||
1253 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
1254 | } | |
1255 | ||
1256 | plane_state->crtc = crtc; | |
1257 | ||
cc4ceb48 DV |
1258 | if (crtc) { |
1259 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1260 | crtc); | |
1261 | if (IS_ERR(crtc_state)) | |
1262 | return PTR_ERR(crtc_state); | |
6ddd388a | 1263 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
cc4ceb48 DV |
1264 | } |
1265 | ||
cc4ceb48 | 1266 | if (crtc) |
fa3ab4c2 VS |
1267 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1268 | plane_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1269 | else |
17a38d9c DV |
1270 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1271 | plane_state); | |
cc4ceb48 DV |
1272 | |
1273 | return 0; | |
1274 | } | |
1275 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1276 | ||
321ebf04 | 1277 | /** |
16d78bc2 | 1278 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
321ebf04 DV |
1279 | * @plane_state: atomic state object for the plane |
1280 | * @fb: fb to use for the plane | |
1281 | * | |
1282 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1283 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1284 | * function takes care of all these details besides updating the pointer in the | |
1285 | * state object itself. | |
1286 | */ | |
1287 | void | |
1288 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1289 | struct drm_framebuffer *fb) | |
1290 | { | |
321ebf04 | 1291 | if (fb) |
17a38d9c DV |
1292 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1293 | fb->base.id, plane_state); | |
321ebf04 | 1294 | else |
17a38d9c DV |
1295 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1296 | plane_state); | |
389f78b3 CW |
1297 | |
1298 | drm_framebuffer_assign(&plane_state->fb, fb); | |
321ebf04 DV |
1299 | } |
1300 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1301 | ||
13b55664 GP |
1302 | /** |
1303 | * drm_atomic_set_fence_for_plane - set fence for plane | |
1304 | * @plane_state: atomic state object for the plane | |
1305 | * @fence: dma_fence to use for the plane | |
1306 | * | |
1307 | * Helper to setup the plane_state fence in case it is not set yet. | |
1308 | * By using this drivers doesn't need to worry if the user choose | |
1309 | * implicit or explicit fencing. | |
1310 | * | |
1311 | * This function will not set the fence to the state if it was set | |
d574528a DV |
1312 | * via explicit fencing interfaces on the atomic ioctl. In that case it will |
1313 | * drop the reference to the fence as we are not storing it anywhere. | |
1314 | * Otherwise, if &drm_plane_state.fence is not set this function we just set it | |
1315 | * with the received implicit fence. In both cases this function consumes a | |
1316 | * reference for @fence. | |
13b55664 GP |
1317 | */ |
1318 | void | |
1319 | drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state, | |
1320 | struct dma_fence *fence) | |
1321 | { | |
1322 | if (plane_state->fence) { | |
1323 | dma_fence_put(fence); | |
1324 | return; | |
1325 | } | |
1326 | ||
1327 | plane_state->fence = fence; | |
1328 | } | |
1329 | EXPORT_SYMBOL(drm_atomic_set_fence_for_plane); | |
1330 | ||
cc4ceb48 DV |
1331 | /** |
1332 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1333 | * @conn_state: atomic state object for the connector | |
1334 | * @crtc: crtc to use for the connector | |
1335 | * | |
1336 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1337 | * state for the new crtc, as needed. This function takes care of all these | |
1338 | * details besides updating the pointer in the state object itself. | |
1339 | * | |
1340 | * Returns: | |
1341 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1342 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1343 | * sequence must be restarted. All other errors are fatal. | |
1344 | */ | |
1345 | int | |
1346 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1347 | struct drm_crtc *crtc) | |
1348 | { | |
1349 | struct drm_crtc_state *crtc_state; | |
1350 | ||
e2d800a3 CW |
1351 | if (conn_state->crtc == crtc) |
1352 | return 0; | |
1353 | ||
1354 | if (conn_state->crtc) { | |
4cd9fa52 ML |
1355 | crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state, |
1356 | conn_state->crtc); | |
1357 | ||
1358 | crtc_state->connector_mask &= | |
1359 | ~(1 << drm_connector_index(conn_state->connector)); | |
e2d800a3 CW |
1360 | |
1361 | drm_connector_unreference(conn_state->connector); | |
1362 | conn_state->crtc = NULL; | |
4cd9fa52 ML |
1363 | } |
1364 | ||
cc4ceb48 DV |
1365 | if (crtc) { |
1366 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1367 | if (IS_ERR(crtc_state)) | |
1368 | return PTR_ERR(crtc_state); | |
4cd9fa52 ML |
1369 | |
1370 | crtc_state->connector_mask |= | |
1371 | 1 << drm_connector_index(conn_state->connector); | |
cc4ceb48 | 1372 | |
e2d800a3 CW |
1373 | drm_connector_reference(conn_state->connector); |
1374 | conn_state->crtc = crtc; | |
cc4ceb48 | 1375 | |
fa3ab4c2 VS |
1376 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1377 | conn_state, crtc->base.id, crtc->name); | |
e2d800a3 | 1378 | } else { |
17a38d9c DV |
1379 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1380 | conn_state); | |
e2d800a3 | 1381 | } |
cc4ceb48 DV |
1382 | |
1383 | return 0; | |
1384 | } | |
1385 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1386 | ||
1387 | /** | |
1388 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1389 | * @state: atomic state | |
1390 | * @crtc: DRM crtc | |
1391 | * | |
1392 | * This function walks the current configuration and adds all connectors | |
1393 | * currently using @crtc to the atomic configuration @state. Note that this | |
1394 | * function must acquire the connection mutex. This can potentially cause | |
1395 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1396 | * drivers and helpers should only call this when really needed (e.g. when a | |
1397 | * full modeset needs to happen due to some change). | |
1398 | * | |
1399 | * Returns: | |
1400 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1401 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1402 | * sequence must be restarted. All other errors are fatal. | |
1403 | */ | |
1404 | int | |
1405 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1406 | struct drm_crtc *crtc) | |
1407 | { | |
1408 | struct drm_mode_config *config = &state->dev->mode_config; | |
1409 | struct drm_connector *connector; | |
1410 | struct drm_connector_state *conn_state; | |
613051da | 1411 | struct drm_connector_list_iter conn_iter; |
cc4ceb48 DV |
1412 | int ret; |
1413 | ||
1414 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); | |
1415 | if (ret) | |
1416 | return ret; | |
1417 | ||
fa3ab4c2 VS |
1418 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1419 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1420 | |
1421 | /* | |
1422 | * Changed connectors are already in @state, so only need to look at the | |
1423 | * current configuration. | |
1424 | */ | |
613051da DV |
1425 | drm_connector_list_iter_get(state->dev, &conn_iter); |
1426 | drm_for_each_connector_iter(connector, &conn_iter) { | |
cc4ceb48 DV |
1427 | if (connector->state->crtc != crtc) |
1428 | continue; | |
1429 | ||
1430 | conn_state = drm_atomic_get_connector_state(state, connector); | |
613051da DV |
1431 | if (IS_ERR(conn_state)) { |
1432 | drm_connector_list_iter_put(&conn_iter); | |
cc4ceb48 | 1433 | return PTR_ERR(conn_state); |
613051da | 1434 | } |
cc4ceb48 | 1435 | } |
613051da | 1436 | drm_connector_list_iter_put(&conn_iter); |
cc4ceb48 DV |
1437 | |
1438 | return 0; | |
1439 | } | |
1440 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1441 | ||
e01e9f75 ML |
1442 | /** |
1443 | * drm_atomic_add_affected_planes - add planes for crtc | |
1444 | * @state: atomic state | |
1445 | * @crtc: DRM crtc | |
1446 | * | |
1447 | * This function walks the current configuration and adds all planes | |
1448 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1449 | * when an atomic commit also needs to check all currently enabled plane on | |
1450 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1451 | * to avoid special code to force-enable all planes. | |
1452 | * | |
1453 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1454 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1455 | * a CRTC will not reduce parallism of atomic updates. | |
1456 | * | |
1457 | * Returns: | |
1458 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1459 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1460 | * sequence must be restarted. All other errors are fatal. | |
1461 | */ | |
1462 | int | |
1463 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1464 | struct drm_crtc *crtc) | |
1465 | { | |
1466 | struct drm_plane *plane; | |
1467 | ||
1468 | WARN_ON(!drm_atomic_get_existing_crtc_state(state, crtc)); | |
1469 | ||
1470 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1471 | struct drm_plane_state *plane_state = | |
1472 | drm_atomic_get_plane_state(state, plane); | |
1473 | ||
1474 | if (IS_ERR(plane_state)) | |
1475 | return PTR_ERR(plane_state); | |
1476 | } | |
1477 | return 0; | |
1478 | } | |
1479 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1480 | ||
cc4ceb48 DV |
1481 | /** |
1482 | * drm_atomic_legacy_backoff - locking backoff for legacy ioctls | |
1483 | * @state: atomic state | |
1484 | * | |
1485 | * This function should be used by legacy entry points which don't understand | |
1486 | * -EDEADLK semantics. For simplicity this one will grab all modeset locks after | |
16d78bc2 | 1487 | * the slowpath completed. |
cc4ceb48 DV |
1488 | */ |
1489 | void drm_atomic_legacy_backoff(struct drm_atomic_state *state) | |
1490 | { | |
81e257e9 ML |
1491 | struct drm_device *dev = state->dev; |
1492 | unsigned crtc_mask = 0; | |
1493 | struct drm_crtc *crtc; | |
cc4ceb48 | 1494 | int ret; |
81e257e9 ML |
1495 | bool global = false; |
1496 | ||
1497 | drm_for_each_crtc(crtc, dev) { | |
1498 | if (crtc->acquire_ctx != state->acquire_ctx) | |
1499 | continue; | |
1500 | ||
1501 | crtc_mask |= drm_crtc_mask(crtc); | |
1502 | crtc->acquire_ctx = NULL; | |
1503 | } | |
1504 | ||
1505 | if (WARN_ON(dev->mode_config.acquire_ctx == state->acquire_ctx)) { | |
1506 | global = true; | |
1507 | ||
1508 | dev->mode_config.acquire_ctx = NULL; | |
1509 | } | |
cc4ceb48 DV |
1510 | |
1511 | retry: | |
1512 | drm_modeset_backoff(state->acquire_ctx); | |
1513 | ||
81e257e9 | 1514 | ret = drm_modeset_lock_all_ctx(dev, state->acquire_ctx); |
cc4ceb48 DV |
1515 | if (ret) |
1516 | goto retry; | |
81e257e9 ML |
1517 | |
1518 | drm_for_each_crtc(crtc, dev) | |
1519 | if (drm_crtc_mask(crtc) & crtc_mask) | |
1520 | crtc->acquire_ctx = state->acquire_ctx; | |
1521 | ||
1522 | if (global) | |
1523 | dev->mode_config.acquire_ctx = state->acquire_ctx; | |
cc4ceb48 DV |
1524 | } |
1525 | EXPORT_SYMBOL(drm_atomic_legacy_backoff); | |
1526 | ||
1527 | /** | |
1528 | * drm_atomic_check_only - check whether a given config would work | |
1529 | * @state: atomic configuration to check | |
1530 | * | |
1531 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1532 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1533 | * backoff dance and restart. All other errors are fatal. | |
1534 | * | |
1535 | * Returns: | |
1536 | * 0 on success, negative error code on failure. | |
1537 | */ | |
1538 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1539 | { | |
5e743737 RC |
1540 | struct drm_device *dev = state->dev; |
1541 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1542 | struct drm_plane *plane; |
1543 | struct drm_plane_state *plane_state; | |
1544 | struct drm_crtc *crtc; | |
1545 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1546 | int i, ret = 0; |
cc4ceb48 | 1547 | |
17a38d9c | 1548 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1549 | |
df63b999 ACO |
1550 | for_each_plane_in_state(state, plane, plane_state, i) { |
1551 | ret = drm_atomic_plane_check(plane, plane_state); | |
5e743737 | 1552 | if (ret) { |
9f4c97a2 VS |
1553 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1554 | plane->base.id, plane->name); | |
5e743737 RC |
1555 | return ret; |
1556 | } | |
1557 | } | |
1558 | ||
df63b999 ACO |
1559 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
1560 | ret = drm_atomic_crtc_check(crtc, crtc_state); | |
5e743737 | 1561 | if (ret) { |
fa3ab4c2 VS |
1562 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1563 | crtc->base.id, crtc->name); | |
5e743737 RC |
1564 | return ret; |
1565 | } | |
1566 | } | |
1567 | ||
cc4ceb48 | 1568 | if (config->funcs->atomic_check) |
5e743737 RC |
1569 | ret = config->funcs->atomic_check(state->dev, state); |
1570 | ||
d34f20d6 | 1571 | if (!state->allow_modeset) { |
df63b999 | 1572 | for_each_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1573 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1574 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1575 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1576 | return -EINVAL; |
1577 | } | |
1578 | } | |
1579 | } | |
1580 | ||
5e743737 | 1581 | return ret; |
cc4ceb48 DV |
1582 | } |
1583 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1584 | ||
1585 | /** | |
1586 | * drm_atomic_commit - commit configuration atomically | |
1587 | * @state: atomic configuration to check | |
1588 | * | |
1589 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1590 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1591 | * backoff dance and restart. All other errors are fatal. | |
1592 | * | |
76fede2f ML |
1593 | * This function will take its own reference on @state. |
1594 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1595 | * |
1596 | * Returns: | |
1597 | * 0 on success, negative error code on failure. | |
1598 | */ | |
1599 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1600 | { | |
1601 | struct drm_mode_config *config = &state->dev->mode_config; | |
1602 | int ret; | |
1603 | ||
1604 | ret = drm_atomic_check_only(state); | |
1605 | if (ret) | |
1606 | return ret; | |
1607 | ||
17a38d9c | 1608 | DRM_DEBUG_ATOMIC("commiting %p\n", state); |
cc4ceb48 DV |
1609 | |
1610 | return config->funcs->atomic_commit(state->dev, state, false); | |
1611 | } | |
1612 | EXPORT_SYMBOL(drm_atomic_commit); | |
1613 | ||
1614 | /** | |
d574528a | 1615 | * drm_atomic_nonblocking_commit - atomic nonblocking commit |
cc4ceb48 DV |
1616 | * @state: atomic configuration to check |
1617 | * | |
1618 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1619 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1620 | * backoff dance and restart. All other errors are fatal. | |
1621 | * | |
76fede2f ML |
1622 | * This function will take its own reference on @state. |
1623 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1624 | * |
1625 | * Returns: | |
1626 | * 0 on success, negative error code on failure. | |
1627 | */ | |
b837ba0a | 1628 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1629 | { |
1630 | struct drm_mode_config *config = &state->dev->mode_config; | |
1631 | int ret; | |
1632 | ||
1633 | ret = drm_atomic_check_only(state); | |
1634 | if (ret) | |
1635 | return ret; | |
1636 | ||
b837ba0a | 1637 | DRM_DEBUG_ATOMIC("commiting %p nonblocking\n", state); |
cc4ceb48 DV |
1638 | |
1639 | return config->funcs->atomic_commit(state->dev, state, true); | |
1640 | } | |
b837ba0a | 1641 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 | 1642 | |
fceffb32 RC |
1643 | static void drm_atomic_print_state(const struct drm_atomic_state *state) |
1644 | { | |
1645 | struct drm_printer p = drm_info_printer(state->dev->dev); | |
1646 | struct drm_plane *plane; | |
1647 | struct drm_plane_state *plane_state; | |
1648 | struct drm_crtc *crtc; | |
1649 | struct drm_crtc_state *crtc_state; | |
1650 | struct drm_connector *connector; | |
1651 | struct drm_connector_state *connector_state; | |
1652 | int i; | |
1653 | ||
1654 | DRM_DEBUG_ATOMIC("checking %p\n", state); | |
1655 | ||
1656 | for_each_plane_in_state(state, plane, plane_state, i) | |
1657 | drm_atomic_plane_print_state(&p, plane_state); | |
1658 | ||
1659 | for_each_crtc_in_state(state, crtc, crtc_state, i) | |
1660 | drm_atomic_crtc_print_state(&p, crtc_state); | |
1661 | ||
1662 | for_each_connector_in_state(state, connector, connector_state, i) | |
1663 | drm_atomic_connector_print_state(&p, connector_state); | |
1664 | } | |
1665 | ||
6559c901 RC |
1666 | /** |
1667 | * drm_state_dump - dump entire device atomic state | |
1668 | * @dev: the drm device | |
1669 | * @p: where to print the state to | |
1670 | * | |
1671 | * Just for debugging. Drivers might want an option to dump state | |
1672 | * to dmesg in case of error irq's. (Hint, you probably want to | |
1673 | * ratelimit this!) | |
1674 | * | |
1675 | * The caller must drm_modeset_lock_all(), or if this is called | |
1676 | * from error irq handler, it should not be enabled by default. | |
1677 | * (Ie. if you are debugging errors you might not care that this | |
1678 | * is racey. But calling this without all modeset locks held is | |
1679 | * not inherently safe.) | |
1680 | */ | |
1681 | void drm_state_dump(struct drm_device *dev, struct drm_printer *p) | |
1682 | { | |
1683 | struct drm_mode_config *config = &dev->mode_config; | |
1684 | struct drm_plane *plane; | |
1685 | struct drm_crtc *crtc; | |
1686 | struct drm_connector *connector; | |
613051da | 1687 | struct drm_connector_list_iter conn_iter; |
6559c901 RC |
1688 | |
1689 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1690 | return; | |
1691 | ||
1692 | list_for_each_entry(plane, &config->plane_list, head) | |
1693 | drm_atomic_plane_print_state(p, plane->state); | |
1694 | ||
1695 | list_for_each_entry(crtc, &config->crtc_list, head) | |
1696 | drm_atomic_crtc_print_state(p, crtc->state); | |
1697 | ||
613051da DV |
1698 | drm_connector_list_iter_get(dev, &conn_iter); |
1699 | drm_for_each_connector_iter(connector, &conn_iter) | |
6559c901 | 1700 | drm_atomic_connector_print_state(p, connector->state); |
613051da | 1701 | drm_connector_list_iter_put(&conn_iter); |
6559c901 RC |
1702 | } |
1703 | EXPORT_SYMBOL(drm_state_dump); | |
1704 | ||
1705 | #ifdef CONFIG_DEBUG_FS | |
1706 | static int drm_state_info(struct seq_file *m, void *data) | |
1707 | { | |
1708 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
1709 | struct drm_device *dev = node->minor->dev; | |
1710 | struct drm_printer p = drm_seq_file_printer(m); | |
1711 | ||
1712 | drm_modeset_lock_all(dev); | |
1713 | drm_state_dump(dev, &p); | |
1714 | drm_modeset_unlock_all(dev); | |
1715 | ||
1716 | return 0; | |
1717 | } | |
1718 | ||
1719 | /* any use in debugfs files to dump individual planes/crtc/etc? */ | |
1720 | static const struct drm_info_list drm_atomic_debugfs_list[] = { | |
1721 | {"state", drm_state_info, 0}, | |
1722 | }; | |
1723 | ||
1724 | int drm_atomic_debugfs_init(struct drm_minor *minor) | |
1725 | { | |
1726 | return drm_debugfs_create_files(drm_atomic_debugfs_list, | |
1727 | ARRAY_SIZE(drm_atomic_debugfs_list), | |
1728 | minor->debugfs_root, minor); | |
1729 | } | |
8c0b55e2 LD |
1730 | |
1731 | int drm_atomic_debugfs_cleanup(struct drm_minor *minor) | |
1732 | { | |
1733 | return drm_debugfs_remove_files(drm_atomic_debugfs_list, | |
1734 | ARRAY_SIZE(drm_atomic_debugfs_list), | |
1735 | minor); | |
1736 | } | |
6559c901 RC |
1737 | #endif |
1738 | ||
d34f20d6 RC |
1739 | /* |
1740 | * The big monstor ioctl | |
1741 | */ | |
1742 | ||
1743 | static struct drm_pending_vblank_event *create_vblank_event( | |
beaf5af4 | 1744 | struct drm_device *dev, uint64_t user_data) |
d34f20d6 RC |
1745 | { |
1746 | struct drm_pending_vblank_event *e = NULL; | |
d34f20d6 RC |
1747 | |
1748 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
2dd500f1 DV |
1749 | if (!e) |
1750 | return NULL; | |
d34f20d6 RC |
1751 | |
1752 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
2dd500f1 | 1753 | e->event.base.length = sizeof(e->event); |
d34f20d6 | 1754 | e->event.user_data = user_data; |
d34f20d6 | 1755 | |
2dd500f1 | 1756 | return e; |
d34f20d6 RC |
1757 | } |
1758 | ||
1759 | static int atomic_set_prop(struct drm_atomic_state *state, | |
1760 | struct drm_mode_object *obj, struct drm_property *prop, | |
1761 | uint64_t prop_value) | |
1762 | { | |
1763 | struct drm_mode_object *ref; | |
1764 | int ret; | |
1765 | ||
1766 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1767 | return -EINVAL; | |
1768 | ||
1769 | switch (obj->type) { | |
1770 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1771 | struct drm_connector *connector = obj_to_connector(obj); | |
1772 | struct drm_connector_state *connector_state; | |
1773 | ||
1774 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1775 | if (IS_ERR(connector_state)) { | |
1776 | ret = PTR_ERR(connector_state); | |
1777 | break; | |
1778 | } | |
1779 | ||
1780 | ret = drm_atomic_connector_set_property(connector, | |
1781 | connector_state, prop, prop_value); | |
1782 | break; | |
1783 | } | |
1784 | case DRM_MODE_OBJECT_CRTC: { | |
1785 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1786 | struct drm_crtc_state *crtc_state; | |
1787 | ||
1788 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1789 | if (IS_ERR(crtc_state)) { | |
1790 | ret = PTR_ERR(crtc_state); | |
1791 | break; | |
1792 | } | |
1793 | ||
1794 | ret = drm_atomic_crtc_set_property(crtc, | |
1795 | crtc_state, prop, prop_value); | |
1796 | break; | |
1797 | } | |
1798 | case DRM_MODE_OBJECT_PLANE: { | |
1799 | struct drm_plane *plane = obj_to_plane(obj); | |
1800 | struct drm_plane_state *plane_state; | |
1801 | ||
1802 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1803 | if (IS_ERR(plane_state)) { | |
1804 | ret = PTR_ERR(plane_state); | |
1805 | break; | |
1806 | } | |
1807 | ||
1808 | ret = drm_atomic_plane_set_property(plane, | |
1809 | plane_state, prop, prop_value); | |
1810 | break; | |
1811 | } | |
1812 | default: | |
1813 | ret = -EINVAL; | |
1814 | break; | |
1815 | } | |
1816 | ||
1817 | drm_property_change_valid_put(prop, ref); | |
1818 | return ret; | |
1819 | } | |
1820 | ||
0f45c26f | 1821 | /** |
9744bf41 | 1822 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1823 | * |
1824 | * @dev: drm device to check. | |
1825 | * @plane_mask: plane mask for planes that were updated. | |
1826 | * @ret: return value, can be -EDEADLK for a retry. | |
1827 | * | |
d574528a DV |
1828 | * Before doing an update &drm_plane.old_fb is set to &drm_plane.fb, but before |
1829 | * dropping the locks old_fb needs to be set to NULL and plane->fb updated. This | |
1830 | * is a common operation for each atomic update, so this call is split off as a | |
1831 | * helper. | |
0f45c26f ML |
1832 | */ |
1833 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1834 | unsigned plane_mask, | |
1835 | int ret) | |
1836 | { | |
1837 | struct drm_plane *plane; | |
1838 | ||
1839 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1840 | * locks (ie. while it is still safe to deref plane->state). We | |
1841 | * need to do this here because the driver entry points cannot | |
1842 | * distinguish between legacy and atomic ioctls. | |
1843 | */ | |
1844 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1845 | if (ret == 0) { | |
1846 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1847 | if (new_fb) | |
1848 | drm_framebuffer_reference(new_fb); | |
1849 | plane->fb = new_fb; | |
1850 | plane->crtc = plane->state->crtc; | |
1851 | ||
1852 | if (plane->old_fb) | |
1853 | drm_framebuffer_unreference(plane->old_fb); | |
1854 | } | |
1855 | plane->old_fb = NULL; | |
1856 | } | |
1857 | } | |
1858 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1859 | ||
9a83a71a GP |
1860 | /** |
1861 | * DOC: explicit fencing properties | |
1862 | * | |
1863 | * Explicit fencing allows userspace to control the buffer synchronization | |
1864 | * between devices. A Fence or a group of fences are transfered to/from | |
1865 | * userspace using Sync File fds and there are two DRM properties for that. | |
1866 | * IN_FENCE_FD on each DRM Plane to send fences to the kernel and | |
1867 | * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel. | |
1868 | * | |
1869 | * As a contrast, with implicit fencing the kernel keeps track of any | |
1870 | * ongoing rendering, and automatically ensures that the atomic update waits | |
1871 | * for any pending rendering to complete. For shared buffers represented with | |
d574528a | 1872 | * a &struct dma_buf this is tracked in &struct reservation_object. |
9a83a71a GP |
1873 | * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org), |
1874 | * whereas explicit fencing is what Android wants. | |
1875 | * | |
1876 | * "IN_FENCE_FD”: | |
1877 | * Use this property to pass a fence that DRM should wait on before | |
1878 | * proceeding with the Atomic Commit request and show the framebuffer for | |
1879 | * the plane on the screen. The fence can be either a normal fence or a | |
1880 | * merged one, the sync_file framework will handle both cases and use a | |
1881 | * fence_array if a merged fence is received. Passing -1 here means no | |
1882 | * fences to wait on. | |
1883 | * | |
1884 | * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag | |
1885 | * it will only check if the Sync File is a valid one. | |
1886 | * | |
1887 | * On the driver side the fence is stored on the @fence parameter of | |
ea0dd85a | 1888 | * &struct drm_plane_state. Drivers which also support implicit fencing |
9a83a71a GP |
1889 | * should set the implicit fence using drm_atomic_set_fence_for_plane(), |
1890 | * to make sure there's consistent behaviour between drivers in precedence | |
1891 | * of implicit vs. explicit fencing. | |
1892 | * | |
1893 | * "OUT_FENCE_PTR”: | |
1894 | * Use this property to pass a file descriptor pointer to DRM. Once the | |
1895 | * Atomic Commit request call returns OUT_FENCE_PTR will be filled with | |
1896 | * the file descriptor number of a Sync File. This Sync File contains the | |
1897 | * CRTC fence that will be signaled when all framebuffers present on the | |
1898 | * Atomic Commit * request for that given CRTC are scanned out on the | |
1899 | * screen. | |
1900 | * | |
1901 | * The Atomic Commit request fails if a invalid pointer is passed. If the | |
1902 | * Atomic Commit request fails for any other reason the out fence fd | |
1903 | * returned will be -1. On a Atomic Commit with the | |
1904 | * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1. | |
1905 | * | |
1906 | * Note that out-fences don't have a special interface to drivers and are | |
ea0dd85a | 1907 | * internally represented by a &struct drm_pending_vblank_event in struct |
9a83a71a GP |
1908 | * &drm_crtc_state, which is also used by the nonblocking atomic commit |
1909 | * helpers and for the DRM event handling for existing userspace. | |
1910 | */ | |
1911 | ||
beaf5af4 GP |
1912 | struct drm_out_fence_state { |
1913 | s64 __user *out_fence_ptr; | |
1914 | struct sync_file *sync_file; | |
1915 | int fd; | |
1916 | }; | |
1917 | ||
1918 | static int setup_out_fence(struct drm_out_fence_state *fence_state, | |
1919 | struct dma_fence *fence) | |
1920 | { | |
1921 | fence_state->fd = get_unused_fd_flags(O_CLOEXEC); | |
1922 | if (fence_state->fd < 0) | |
1923 | return fence_state->fd; | |
1924 | ||
1925 | if (put_user(fence_state->fd, fence_state->out_fence_ptr)) | |
1926 | return -EFAULT; | |
1927 | ||
1928 | fence_state->sync_file = sync_file_create(fence); | |
1929 | if (!fence_state->sync_file) | |
1930 | return -ENOMEM; | |
1931 | ||
1932 | return 0; | |
1933 | } | |
1934 | ||
1935 | static int prepare_crtc_signaling(struct drm_device *dev, | |
1936 | struct drm_atomic_state *state, | |
1937 | struct drm_mode_atomic *arg, | |
1938 | struct drm_file *file_priv, | |
1939 | struct drm_out_fence_state **fence_state, | |
1940 | unsigned int *num_fences) | |
1941 | { | |
1942 | struct drm_crtc *crtc; | |
1943 | struct drm_crtc_state *crtc_state; | |
1944 | int i, ret; | |
1945 | ||
1946 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) | |
1947 | return 0; | |
1948 | ||
1949 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
1950 | u64 __user *fence_ptr; | |
1951 | ||
1952 | fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc); | |
1953 | ||
1954 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) { | |
1955 | struct drm_pending_vblank_event *e; | |
1956 | ||
1957 | e = create_vblank_event(dev, arg->user_data); | |
1958 | if (!e) | |
1959 | return -ENOMEM; | |
1960 | ||
1961 | crtc_state->event = e; | |
1962 | } | |
1963 | ||
1964 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1965 | struct drm_pending_vblank_event *e = crtc_state->event; | |
1966 | ||
1967 | if (!file_priv) | |
1968 | continue; | |
1969 | ||
1970 | ret = drm_event_reserve_init(dev, file_priv, &e->base, | |
1971 | &e->event.base); | |
1972 | if (ret) { | |
1973 | kfree(e); | |
1974 | crtc_state->event = NULL; | |
1975 | return ret; | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | if (fence_ptr) { | |
1980 | struct dma_fence *fence; | |
1981 | struct drm_out_fence_state *f; | |
1982 | ||
1983 | f = krealloc(*fence_state, sizeof(**fence_state) * | |
1984 | (*num_fences + 1), GFP_KERNEL); | |
1985 | if (!f) | |
1986 | return -ENOMEM; | |
1987 | ||
1988 | memset(&f[*num_fences], 0, sizeof(*f)); | |
1989 | ||
1990 | f[*num_fences].out_fence_ptr = fence_ptr; | |
1991 | *fence_state = f; | |
1992 | ||
35f8cc3b | 1993 | fence = drm_crtc_create_fence(crtc); |
beaf5af4 GP |
1994 | if (!fence) |
1995 | return -ENOMEM; | |
1996 | ||
1997 | ret = setup_out_fence(&f[(*num_fences)++], fence); | |
1998 | if (ret) { | |
1999 | dma_fence_put(fence); | |
2000 | return ret; | |
2001 | } | |
2002 | ||
2003 | crtc_state->event->base.fence = fence; | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | return 0; | |
2008 | } | |
2009 | ||
2010 | static void complete_crtc_signaling(struct drm_device *dev, | |
2011 | struct drm_atomic_state *state, | |
2012 | struct drm_out_fence_state *fence_state, | |
2013 | unsigned int num_fences, | |
2014 | bool install_fds) | |
2015 | { | |
2016 | struct drm_crtc *crtc; | |
2017 | struct drm_crtc_state *crtc_state; | |
2018 | int i; | |
2019 | ||
2020 | if (install_fds) { | |
2021 | for (i = 0; i < num_fences; i++) | |
2022 | fd_install(fence_state[i].fd, | |
2023 | fence_state[i].sync_file->file); | |
2024 | ||
2025 | kfree(fence_state); | |
2026 | return; | |
2027 | } | |
2028 | ||
2029 | for_each_crtc_in_state(state, crtc, crtc_state, i) { | |
2030 | /* | |
2031 | * TEST_ONLY and PAGE_FLIP_EVENT are mutually | |
2032 | * exclusive, if they weren't, this code should be | |
2033 | * called on success for TEST_ONLY too. | |
2034 | */ | |
2035 | if (crtc_state->event) | |
2036 | drm_event_cancel_free(dev, &crtc_state->event->base); | |
2037 | } | |
2038 | ||
2039 | if (!fence_state) | |
2040 | return; | |
2041 | ||
2042 | for (i = 0; i < num_fences; i++) { | |
2043 | if (fence_state[i].sync_file) | |
2044 | fput(fence_state[i].sync_file->file); | |
2045 | if (fence_state[i].fd >= 0) | |
2046 | put_unused_fd(fence_state[i].fd); | |
2047 | ||
2048 | /* If this fails log error to the user */ | |
2049 | if (fence_state[i].out_fence_ptr && | |
2050 | put_user(-1, fence_state[i].out_fence_ptr)) | |
2051 | DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n"); | |
2052 | } | |
2053 | ||
2054 | kfree(fence_state); | |
2055 | } | |
2056 | ||
d34f20d6 RC |
2057 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
2058 | void *data, struct drm_file *file_priv) | |
2059 | { | |
2060 | struct drm_mode_atomic *arg = data; | |
2061 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
2062 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
2063 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
2064 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
2065 | unsigned int copied_objs, copied_props; | |
2066 | struct drm_atomic_state *state; | |
2067 | struct drm_modeset_acquire_ctx ctx; | |
2068 | struct drm_plane *plane; | |
beaf5af4 | 2069 | struct drm_out_fence_state *fence_state = NULL; |
45723728 | 2070 | unsigned plane_mask; |
d34f20d6 | 2071 | int ret = 0; |
beaf5af4 | 2072 | unsigned int i, j, num_fences = 0; |
d34f20d6 RC |
2073 | |
2074 | /* disallow for drivers not supporting atomic: */ | |
2075 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
2076 | return -EINVAL; | |
2077 | ||
2078 | /* disallow for userspace that has not enabled atomic cap (even | |
2079 | * though this may be a bit overkill, since legacy userspace | |
2080 | * wouldn't know how to call this ioctl) | |
2081 | */ | |
2082 | if (!file_priv->atomic) | |
2083 | return -EINVAL; | |
2084 | ||
2085 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
2086 | return -EINVAL; | |
2087 | ||
2088 | if (arg->reserved) | |
2089 | return -EINVAL; | |
2090 | ||
2091 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
2092 | !dev->mode_config.async_page_flip) | |
2093 | return -EINVAL; | |
2094 | ||
2095 | /* can't test and expect an event at the same time. */ | |
2096 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
2097 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
2098 | return -EINVAL; | |
2099 | ||
2100 | drm_modeset_acquire_init(&ctx, 0); | |
2101 | ||
2102 | state = drm_atomic_state_alloc(dev); | |
2103 | if (!state) | |
2104 | return -ENOMEM; | |
2105 | ||
2106 | state->acquire_ctx = &ctx; | |
2107 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
2108 | ||
2109 | retry: | |
45723728 | 2110 | plane_mask = 0; |
d34f20d6 RC |
2111 | copied_objs = 0; |
2112 | copied_props = 0; | |
2113 | ||
2114 | for (i = 0; i < arg->count_objs; i++) { | |
2115 | uint32_t obj_id, count_props; | |
2116 | struct drm_mode_object *obj; | |
2117 | ||
2118 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
2119 | ret = -EFAULT; | |
ec9f932e | 2120 | goto out; |
d34f20d6 RC |
2121 | } |
2122 | ||
2123 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
b164d31f DA |
2124 | if (!obj) { |
2125 | ret = -ENOENT; | |
2126 | goto out; | |
2127 | } | |
2128 | ||
2129 | if (!obj->properties) { | |
2130 | drm_mode_object_unreference(obj); | |
d34f20d6 | 2131 | ret = -ENOENT; |
ec9f932e | 2132 | goto out; |
d34f20d6 RC |
2133 | } |
2134 | ||
d34f20d6 | 2135 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
b164d31f | 2136 | drm_mode_object_unreference(obj); |
d34f20d6 | 2137 | ret = -EFAULT; |
ec9f932e | 2138 | goto out; |
d34f20d6 RC |
2139 | } |
2140 | ||
2141 | copied_objs++; | |
2142 | ||
2143 | for (j = 0; j < count_props; j++) { | |
2144 | uint32_t prop_id; | |
2145 | uint64_t prop_value; | |
2146 | struct drm_property *prop; | |
2147 | ||
2148 | if (get_user(prop_id, props_ptr + copied_props)) { | |
b164d31f | 2149 | drm_mode_object_unreference(obj); |
d34f20d6 | 2150 | ret = -EFAULT; |
ec9f932e | 2151 | goto out; |
d34f20d6 RC |
2152 | } |
2153 | ||
f92f053b | 2154 | prop = drm_mode_obj_find_prop_id(obj, prop_id); |
d34f20d6 | 2155 | if (!prop) { |
b164d31f | 2156 | drm_mode_object_unreference(obj); |
d34f20d6 | 2157 | ret = -ENOENT; |
ec9f932e | 2158 | goto out; |
d34f20d6 RC |
2159 | } |
2160 | ||
42c5814c GR |
2161 | if (copy_from_user(&prop_value, |
2162 | prop_values_ptr + copied_props, | |
2163 | sizeof(prop_value))) { | |
b164d31f | 2164 | drm_mode_object_unreference(obj); |
d34f20d6 | 2165 | ret = -EFAULT; |
ec9f932e | 2166 | goto out; |
d34f20d6 RC |
2167 | } |
2168 | ||
2169 | ret = atomic_set_prop(state, obj, prop, prop_value); | |
b164d31f DA |
2170 | if (ret) { |
2171 | drm_mode_object_unreference(obj); | |
ec9f932e | 2172 | goto out; |
b164d31f | 2173 | } |
d34f20d6 RC |
2174 | |
2175 | copied_props++; | |
2176 | } | |
a9cc54ee | 2177 | |
c4749c9a ML |
2178 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
2179 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
2180 | plane = obj_to_plane(obj); |
2181 | plane_mask |= (1 << drm_plane_index(plane)); | |
2182 | plane->old_fb = plane->fb; | |
2183 | } | |
b164d31f | 2184 | drm_mode_object_unreference(obj); |
d34f20d6 RC |
2185 | } |
2186 | ||
beaf5af4 GP |
2187 | ret = prepare_crtc_signaling(dev, state, arg, file_priv, &fence_state, |
2188 | &num_fences); | |
2189 | if (ret) | |
2190 | goto out; | |
d34f20d6 RC |
2191 | |
2192 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
2193 | ret = drm_atomic_check_only(state); | |
d34f20d6 | 2194 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
b837ba0a | 2195 | ret = drm_atomic_nonblocking_commit(state); |
d34f20d6 | 2196 | } else { |
fceffb32 RC |
2197 | if (unlikely(drm_debug & DRM_UT_STATE)) |
2198 | drm_atomic_print_state(state); | |
2199 | ||
d34f20d6 RC |
2200 | ret = drm_atomic_commit(state); |
2201 | } | |
2202 | ||
ec9f932e | 2203 | out: |
0f45c26f | 2204 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 2205 | |
beaf5af4 | 2206 | complete_crtc_signaling(dev, state, fence_state, num_fences, !ret); |
c4749c9a | 2207 | |
ec9f932e ML |
2208 | if (ret == -EDEADLK) { |
2209 | drm_atomic_state_clear(state); | |
2210 | drm_modeset_backoff(&ctx); | |
2211 | goto retry; | |
2212 | } | |
d34f20d6 | 2213 | |
0853695c | 2214 | drm_atomic_state_put(state); |
d34f20d6 RC |
2215 | |
2216 | drm_modeset_drop_locks(&ctx); | |
2217 | drm_modeset_acquire_fini(&ctx); | |
2218 | ||
2219 | return ret; | |
d34f20d6 | 2220 | } |