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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> |
fceffb32 | 32 | #include <drm/drm_print.h> |
96260142 | 33 | #include <linux/sync_file.h> |
cc4ceb48 | 34 | |
be35f94f TR |
35 | #include "drm_crtc_internal.h" |
36 | ||
b3ba3f6f | 37 | void __drm_crtc_commit_free(struct kref *kref) |
3b24f7d6 DV |
38 | { |
39 | struct drm_crtc_commit *commit = | |
40 | container_of(kref, struct drm_crtc_commit, ref); | |
41 | ||
42 | kfree(commit); | |
43 | } | |
b3ba3f6f | 44 | EXPORT_SYMBOL(__drm_crtc_commit_free); |
3b24f7d6 | 45 | |
036ef573 ML |
46 | /** |
47 | * drm_atomic_state_default_release - | |
48 | * release memory initialized by drm_atomic_state_init | |
49 | * @state: atomic state | |
50 | * | |
51 | * Free all the memory allocated by drm_atomic_state_init. | |
52 | * This is useful for drivers that subclass the atomic state. | |
53 | */ | |
54 | void drm_atomic_state_default_release(struct drm_atomic_state *state) | |
cc4ceb48 DV |
55 | { |
56 | kfree(state->connectors); | |
cc4ceb48 | 57 | kfree(state->crtcs); |
cc4ceb48 | 58 | kfree(state->planes); |
b430c27a | 59 | kfree(state->private_objs); |
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; | |
036ef573 ML |
111 | |
112 | if (!config->funcs->atomic_state_alloc) { | |
ac7c7483 DK |
113 | struct drm_atomic_state *state; |
114 | ||
036ef573 ML |
115 | state = kzalloc(sizeof(*state), GFP_KERNEL); |
116 | if (!state) | |
117 | return NULL; | |
118 | if (drm_atomic_state_init(dev, state) < 0) { | |
119 | kfree(state); | |
120 | return NULL; | |
121 | } | |
122 | return state; | |
123 | } | |
cc4ceb48 | 124 | |
036ef573 | 125 | return config->funcs->atomic_state_alloc(dev); |
cc4ceb48 DV |
126 | } |
127 | EXPORT_SYMBOL(drm_atomic_state_alloc); | |
128 | ||
129 | /** | |
036ef573 | 130 | * drm_atomic_state_default_clear - clear base atomic state |
cc4ceb48 DV |
131 | * @state: atomic state |
132 | * | |
036ef573 ML |
133 | * Default implementation for clearing atomic state. |
134 | * This is useful for drivers that subclass the atomic state. | |
cc4ceb48 | 135 | */ |
036ef573 | 136 | void drm_atomic_state_default_clear(struct drm_atomic_state *state) |
cc4ceb48 DV |
137 | { |
138 | struct drm_device *dev = state->dev; | |
6f75cea6 | 139 | struct drm_mode_config *config = &dev->mode_config; |
cc4ceb48 DV |
140 | int i; |
141 | ||
17a38d9c | 142 | DRM_DEBUG_ATOMIC("Clearing atomic state %p\n", state); |
cc4ceb48 | 143 | |
f52b69f1 | 144 | for (i = 0; i < state->num_connector; i++) { |
63e83c1d | 145 | struct drm_connector *connector = state->connectors[i].ptr; |
cc4ceb48 DV |
146 | |
147 | if (!connector) | |
148 | continue; | |
149 | ||
d2307dea | 150 | connector->funcs->atomic_destroy_state(connector, |
63e83c1d DV |
151 | state->connectors[i].state); |
152 | state->connectors[i].ptr = NULL; | |
153 | state->connectors[i].state = NULL; | |
ad093607 | 154 | drm_connector_put(connector); |
cc4ceb48 DV |
155 | } |
156 | ||
6f75cea6 | 157 | for (i = 0; i < config->num_crtc; i++) { |
5d943aa6 | 158 | struct drm_crtc *crtc = state->crtcs[i].ptr; |
cc4ceb48 DV |
159 | |
160 | if (!crtc) | |
161 | continue; | |
162 | ||
163 | crtc->funcs->atomic_destroy_state(crtc, | |
5d943aa6 | 164 | state->crtcs[i].state); |
3b24f7d6 | 165 | |
5d943aa6 DV |
166 | state->crtcs[i].ptr = NULL; |
167 | state->crtcs[i].state = NULL; | |
cc4ceb48 DV |
168 | } |
169 | ||
6f75cea6 | 170 | for (i = 0; i < config->num_total_plane; i++) { |
b8b5342b | 171 | struct drm_plane *plane = state->planes[i].ptr; |
cc4ceb48 DV |
172 | |
173 | if (!plane) | |
174 | continue; | |
175 | ||
176 | plane->funcs->atomic_destroy_state(plane, | |
b8b5342b DV |
177 | state->planes[i].state); |
178 | state->planes[i].ptr = NULL; | |
179 | state->planes[i].state = NULL; | |
cc4ceb48 | 180 | } |
b430c27a PD |
181 | |
182 | for (i = 0; i < state->num_private_objs; i++) { | |
a4370c77 | 183 | struct drm_private_obj *obj = state->private_objs[i].ptr; |
b430c27a | 184 | |
a4370c77 VS |
185 | obj->funcs->atomic_destroy_state(obj, |
186 | state->private_objs[i].state); | |
187 | state->private_objs[i].ptr = NULL; | |
188 | state->private_objs[i].state = NULL; | |
b430c27a PD |
189 | } |
190 | state->num_private_objs = 0; | |
191 | ||
21a01abb ML |
192 | if (state->fake_commit) { |
193 | drm_crtc_commit_put(state->fake_commit); | |
194 | state->fake_commit = NULL; | |
195 | } | |
cc4ceb48 | 196 | } |
036ef573 ML |
197 | EXPORT_SYMBOL(drm_atomic_state_default_clear); |
198 | ||
199 | /** | |
200 | * drm_atomic_state_clear - clear state object | |
201 | * @state: atomic state | |
202 | * | |
203 | * When the w/w mutex algorithm detects a deadlock we need to back off and drop | |
204 | * all locks. So someone else could sneak in and change the current modeset | |
205 | * configuration. Which means that all the state assembled in @state is no | |
206 | * longer an atomic update to the current state, but to some arbitrary earlier | |
d574528a DV |
207 | * state. Which could break assumptions the driver's |
208 | * &drm_mode_config_funcs.atomic_check likely relies on. | |
036ef573 ML |
209 | * |
210 | * Hence we must clear all cached state and completely start over, using this | |
211 | * function. | |
212 | */ | |
213 | void drm_atomic_state_clear(struct drm_atomic_state *state) | |
214 | { | |
215 | struct drm_device *dev = state->dev; | |
216 | struct drm_mode_config *config = &dev->mode_config; | |
217 | ||
218 | if (config->funcs->atomic_state_clear) | |
219 | config->funcs->atomic_state_clear(state); | |
220 | else | |
221 | drm_atomic_state_default_clear(state); | |
222 | } | |
cc4ceb48 DV |
223 | EXPORT_SYMBOL(drm_atomic_state_clear); |
224 | ||
225 | /** | |
0853695c CW |
226 | * __drm_atomic_state_free - free all memory for an atomic state |
227 | * @ref: This atomic state to deallocate | |
cc4ceb48 DV |
228 | * |
229 | * This frees all memory associated with an atomic state, including all the | |
230 | * per-object state for planes, crtcs and connectors. | |
231 | */ | |
0853695c | 232 | void __drm_atomic_state_free(struct kref *ref) |
cc4ceb48 | 233 | { |
0853695c CW |
234 | struct drm_atomic_state *state = container_of(ref, typeof(*state), ref); |
235 | struct drm_mode_config *config = &state->dev->mode_config; | |
036ef573 | 236 | |
cc4ceb48 DV |
237 | drm_atomic_state_clear(state); |
238 | ||
17a38d9c | 239 | DRM_DEBUG_ATOMIC("Freeing atomic state %p\n", state); |
cc4ceb48 | 240 | |
036ef573 ML |
241 | if (config->funcs->atomic_state_free) { |
242 | config->funcs->atomic_state_free(state); | |
243 | } else { | |
244 | drm_atomic_state_default_release(state); | |
245 | kfree(state); | |
246 | } | |
cc4ceb48 | 247 | } |
0853695c | 248 | EXPORT_SYMBOL(__drm_atomic_state_free); |
cc4ceb48 DV |
249 | |
250 | /** | |
251 | * drm_atomic_get_crtc_state - get crtc state | |
252 | * @state: global atomic state object | |
253 | * @crtc: crtc to get state object for | |
254 | * | |
255 | * This function returns the crtc state for the given crtc, allocating it if | |
256 | * needed. It will also grab the relevant crtc lock to make sure that the state | |
257 | * is consistent. | |
258 | * | |
259 | * Returns: | |
260 | * | |
261 | * Either the allocated state or the error code encoded into the pointer. When | |
262 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
263 | * entire atomic sequence must be restarted. All other errors are fatal. | |
264 | */ | |
265 | struct drm_crtc_state * | |
266 | drm_atomic_get_crtc_state(struct drm_atomic_state *state, | |
267 | struct drm_crtc *crtc) | |
268 | { | |
1b26a5e1 | 269 | int ret, index = drm_crtc_index(crtc); |
cc4ceb48 DV |
270 | struct drm_crtc_state *crtc_state; |
271 | ||
7f4eaa89 ML |
272 | WARN_ON(!state->acquire_ctx); |
273 | ||
1b26a5e1 ML |
274 | crtc_state = drm_atomic_get_existing_crtc_state(state, crtc); |
275 | if (crtc_state) | |
276 | return crtc_state; | |
cc4ceb48 DV |
277 | |
278 | ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx); | |
279 | if (ret) | |
280 | return ERR_PTR(ret); | |
281 | ||
282 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); | |
283 | if (!crtc_state) | |
284 | return ERR_PTR(-ENOMEM); | |
285 | ||
5d943aa6 | 286 | state->crtcs[index].state = crtc_state; |
581e49fe ML |
287 | state->crtcs[index].old_state = crtc->state; |
288 | state->crtcs[index].new_state = crtc_state; | |
5d943aa6 | 289 | state->crtcs[index].ptr = crtc; |
cc4ceb48 DV |
290 | crtc_state->state = state; |
291 | ||
fa3ab4c2 VS |
292 | DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n", |
293 | crtc->base.id, crtc->name, crtc_state, state); | |
cc4ceb48 DV |
294 | |
295 | return crtc_state; | |
296 | } | |
297 | EXPORT_SYMBOL(drm_atomic_get_crtc_state); | |
298 | ||
beaf5af4 | 299 | static void set_out_fence_for_crtc(struct drm_atomic_state *state, |
7e9081c5 | 300 | struct drm_crtc *crtc, s32 __user *fence_ptr) |
beaf5af4 GP |
301 | { |
302 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr; | |
303 | } | |
304 | ||
7e9081c5 | 305 | static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state, |
beaf5af4 GP |
306 | struct drm_crtc *crtc) |
307 | { | |
7e9081c5 | 308 | s32 __user *fence_ptr; |
beaf5af4 GP |
309 | |
310 | fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr; | |
311 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL; | |
312 | ||
313 | return fence_ptr; | |
314 | } | |
315 | ||
819364da DS |
316 | /** |
317 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
318 | * @state: the CRTC whose incoming state to update | |
319 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
320 | * | |
cbef9099 DP |
321 | * Set a mode (originating from the kernel) on the desired CRTC state and update |
322 | * the enable property. | |
819364da DS |
323 | * |
324 | * RETURNS: | |
325 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
326 | */ | |
327 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
91110a4b | 328 | const struct drm_display_mode *mode) |
819364da | 329 | { |
99cf4a29 DS |
330 | struct drm_mode_modeinfo umode; |
331 | ||
819364da DS |
332 | /* Early return for no change. */ |
333 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
334 | return 0; | |
335 | ||
6472e509 | 336 | drm_property_blob_put(state->mode_blob); |
99cf4a29 DS |
337 | state->mode_blob = NULL; |
338 | ||
819364da | 339 | if (mode) { |
99cf4a29 DS |
340 | drm_mode_convert_to_umode(&umode, mode); |
341 | state->mode_blob = | |
342 | drm_property_create_blob(state->crtc->dev, | |
343 | sizeof(umode), | |
344 | &umode); | |
345 | if (IS_ERR(state->mode_blob)) | |
346 | return PTR_ERR(state->mode_blob); | |
347 | ||
819364da DS |
348 | drm_mode_copy(&state->mode, mode); |
349 | state->enable = true; | |
350 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
351 | mode->name, state); | |
352 | } else { | |
353 | memset(&state->mode, 0, sizeof(state->mode)); | |
354 | state->enable = false; | |
355 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
356 | state); | |
357 | } | |
358 | ||
359 | return 0; | |
360 | } | |
361 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
362 | ||
955f3c33 DS |
363 | /** |
364 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
365 | * @state: the CRTC whose incoming state to update | |
366 | * @blob: pointer to blob property to use for mode | |
367 | * | |
368 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
369 | * This function will take a reference on the blob property for the CRTC state, | |
370 | * and release the reference held on the state's existing mode property, if any | |
371 | * was set. | |
372 | * | |
373 | * RETURNS: | |
374 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
375 | */ | |
376 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
377 | struct drm_property_blob *blob) | |
378 | { | |
379 | if (blob == state->mode_blob) | |
380 | return 0; | |
381 | ||
6472e509 | 382 | drm_property_blob_put(state->mode_blob); |
955f3c33 DS |
383 | state->mode_blob = NULL; |
384 | ||
6709887c TV |
385 | memset(&state->mode, 0, sizeof(state->mode)); |
386 | ||
955f3c33 DS |
387 | if (blob) { |
388 | if (blob->length != sizeof(struct drm_mode_modeinfo) || | |
389 | drm_mode_convert_umode(&state->mode, | |
390 | (const struct drm_mode_modeinfo *) | |
391 | blob->data)) | |
392 | return -EINVAL; | |
393 | ||
6472e509 | 394 | state->mode_blob = drm_property_blob_get(blob); |
955f3c33 DS |
395 | state->enable = true; |
396 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for CRTC state %p\n", | |
397 | state->mode.name, state); | |
398 | } else { | |
955f3c33 DS |
399 | state->enable = false; |
400 | DRM_DEBUG_ATOMIC("Set [NOMODE] for CRTC state %p\n", | |
401 | state); | |
402 | } | |
403 | ||
404 | return 0; | |
405 | } | |
406 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
407 | ||
5488dc16 | 408 | static int |
dafee60d | 409 | drm_atomic_replace_property_blob_from_id(struct drm_device *dev, |
5488dc16 LL |
410 | struct drm_property_blob **blob, |
411 | uint64_t blob_id, | |
412 | ssize_t expected_size, | |
413 | bool *replaced) | |
414 | { | |
5488dc16 LL |
415 | struct drm_property_blob *new_blob = NULL; |
416 | ||
417 | if (blob_id != 0) { | |
dafee60d | 418 | new_blob = drm_property_lookup_blob(dev, blob_id); |
5488dc16 LL |
419 | if (new_blob == NULL) |
420 | return -EINVAL; | |
cac5fced FM |
421 | |
422 | if (expected_size > 0 && expected_size != new_blob->length) { | |
6472e509 | 423 | drm_property_blob_put(new_blob); |
5488dc16 | 424 | return -EINVAL; |
cac5fced | 425 | } |
5488dc16 LL |
426 | } |
427 | ||
5f057ffd | 428 | *replaced |= drm_property_replace_blob(blob, new_blob); |
6472e509 | 429 | drm_property_blob_put(new_blob); |
5488dc16 LL |
430 | |
431 | return 0; | |
432 | } | |
433 | ||
40ecc694 RC |
434 | /** |
435 | * drm_atomic_crtc_set_property - set property on CRTC | |
436 | * @crtc: the drm CRTC to set a property on | |
437 | * @state: the state object to update with the new property value | |
438 | * @property: the property to set | |
439 | * @val: the new property value | |
440 | * | |
d574528a DV |
441 | * This function handles generic/core properties and calls out to driver's |
442 | * &drm_crtc_funcs.atomic_set_property for driver properties. To ensure | |
443 | * consistent behavior you must call this function rather than the driver hook | |
444 | * directly. | |
40ecc694 RC |
445 | * |
446 | * RETURNS: | |
447 | * Zero on success, error code on failure | |
448 | */ | |
449 | int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
450 | struct drm_crtc_state *state, struct drm_property *property, | |
451 | uint64_t val) | |
452 | { | |
eab3bbef DV |
453 | struct drm_device *dev = crtc->dev; |
454 | struct drm_mode_config *config = &dev->mode_config; | |
5488dc16 | 455 | bool replaced = false; |
955f3c33 | 456 | int ret; |
eab3bbef | 457 | |
27798365 | 458 | if (property == config->prop_active) |
eab3bbef | 459 | state->active = val; |
955f3c33 DS |
460 | else if (property == config->prop_mode_id) { |
461 | struct drm_property_blob *mode = | |
462 | drm_property_lookup_blob(dev, val); | |
463 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
6472e509 | 464 | drm_property_blob_put(mode); |
955f3c33 | 465 | return ret; |
5488dc16 | 466 | } else if (property == config->degamma_lut_property) { |
dafee60d | 467 | ret = drm_atomic_replace_property_blob_from_id(dev, |
5488dc16 LL |
468 | &state->degamma_lut, |
469 | val, | |
470 | -1, | |
471 | &replaced); | |
add1fa75 | 472 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
473 | return ret; |
474 | } else if (property == config->ctm_property) { | |
dafee60d | 475 | ret = drm_atomic_replace_property_blob_from_id(dev, |
5488dc16 LL |
476 | &state->ctm, |
477 | val, | |
478 | sizeof(struct drm_color_ctm), | |
479 | &replaced); | |
add1fa75 | 480 | state->color_mgmt_changed |= replaced; |
5488dc16 LL |
481 | return ret; |
482 | } else if (property == config->gamma_lut_property) { | |
dafee60d | 483 | ret = drm_atomic_replace_property_blob_from_id(dev, |
5488dc16 LL |
484 | &state->gamma_lut, |
485 | val, | |
486 | -1, | |
487 | &replaced); | |
add1fa75 | 488 | state->color_mgmt_changed |= replaced; |
5488dc16 | 489 | return ret; |
beaf5af4 | 490 | } else if (property == config->prop_out_fence_ptr) { |
7e9081c5 | 491 | s32 __user *fence_ptr = u64_to_user_ptr(val); |
beaf5af4 GP |
492 | |
493 | if (!fence_ptr) | |
494 | return 0; | |
495 | ||
496 | if (put_user(-1, fence_ptr)) | |
497 | return -EFAULT; | |
498 | ||
499 | set_out_fence_for_crtc(state->state, crtc, fence_ptr); | |
5488dc16 | 500 | } else if (crtc->funcs->atomic_set_property) |
40ecc694 | 501 | return crtc->funcs->atomic_set_property(crtc, state, property, val); |
27798365 DS |
502 | else |
503 | return -EINVAL; | |
504 | ||
505 | return 0; | |
40ecc694 RC |
506 | } |
507 | EXPORT_SYMBOL(drm_atomic_crtc_set_property); | |
508 | ||
c0714fc9 DV |
509 | /** |
510 | * drm_atomic_crtc_get_property - get property value from CRTC state | |
511 | * @crtc: the drm CRTC to set a property on | |
512 | * @state: the state object to get the property value from | |
513 | * @property: the property to set | |
514 | * @val: return location for the property value | |
515 | * | |
d574528a DV |
516 | * This function handles generic/core properties and calls out to driver's |
517 | * &drm_crtc_funcs.atomic_get_property for driver properties. To ensure | |
518 | * consistent behavior you must call this function rather than the driver hook | |
519 | * directly. | |
c0714fc9 DV |
520 | * |
521 | * RETURNS: | |
522 | * Zero on success, error code on failure | |
ac9c9256 | 523 | */ |
bf22f3be GT |
524 | static int |
525 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
ac9c9256 RC |
526 | const struct drm_crtc_state *state, |
527 | struct drm_property *property, uint64_t *val) | |
528 | { | |
8f164ce4 DS |
529 | struct drm_device *dev = crtc->dev; |
530 | struct drm_mode_config *config = &dev->mode_config; | |
531 | ||
532 | if (property == config->prop_active) | |
533 | *val = state->active; | |
955f3c33 DS |
534 | else if (property == config->prop_mode_id) |
535 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
5488dc16 LL |
536 | else if (property == config->degamma_lut_property) |
537 | *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; | |
538 | else if (property == config->ctm_property) | |
539 | *val = (state->ctm) ? state->ctm->base.id : 0; | |
540 | else if (property == config->gamma_lut_property) | |
541 | *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; | |
beaf5af4 GP |
542 | else if (property == config->prop_out_fence_ptr) |
543 | *val = 0; | |
8f164ce4 | 544 | else if (crtc->funcs->atomic_get_property) |
ac9c9256 | 545 | return crtc->funcs->atomic_get_property(crtc, state, property, val); |
8f164ce4 DS |
546 | else |
547 | return -EINVAL; | |
548 | ||
549 | return 0; | |
ac9c9256 | 550 | } |
ac9c9256 | 551 | |
5e743737 RC |
552 | /** |
553 | * drm_atomic_crtc_check - check crtc state | |
554 | * @crtc: crtc to check | |
555 | * @state: crtc state to check | |
556 | * | |
557 | * Provides core sanity checks for crtc state. | |
558 | * | |
559 | * RETURNS: | |
560 | * Zero on success, error code on failure | |
561 | */ | |
562 | static int drm_atomic_crtc_check(struct drm_crtc *crtc, | |
563 | struct drm_crtc_state *state) | |
564 | { | |
565 | /* NOTE: we explicitly don't enforce constraints such as primary | |
566 | * layer covering entire screen, since that is something we want | |
567 | * to allow (on hw that supports it). For hw that does not, it | |
568 | * should be checked in driver's crtc->atomic_check() vfunc. | |
569 | * | |
570 | * TODO: Add generic modeset state checks once we support those. | |
571 | */ | |
eab3bbef DV |
572 | |
573 | if (state->active && !state->enable) { | |
fa3ab4c2 VS |
574 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n", |
575 | crtc->base.id, crtc->name); | |
eab3bbef DV |
576 | return -EINVAL; |
577 | } | |
578 | ||
99cf4a29 DS |
579 | /* The state->enable vs. state->mode_blob checks can be WARN_ON, |
580 | * as this is a kernel-internal detail that userspace should never | |
581 | * be able to trigger. */ | |
582 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
583 | WARN_ON(state->enable && !state->mode_blob)) { | |
fa3ab4c2 VS |
584 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n", |
585 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
586 | return -EINVAL; |
587 | } | |
588 | ||
589 | if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) && | |
590 | WARN_ON(!state->enable && state->mode_blob)) { | |
fa3ab4c2 VS |
591 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n", |
592 | crtc->base.id, crtc->name); | |
99cf4a29 DS |
593 | return -EINVAL; |
594 | } | |
595 | ||
4cba6850 DV |
596 | /* |
597 | * Reject event generation for when a CRTC is off and stays off. | |
598 | * It wouldn't be hard to implement this, but userspace has a track | |
599 | * record of happily burning through 100% cpu (or worse, crash) when the | |
600 | * display pipe is suspended. To avoid all that fun just reject updates | |
601 | * that ask for events since likely that indicates a bug in the | |
602 | * compositor's drawing loop. This is consistent with the vblank IOCTL | |
603 | * and legacy page_flip IOCTL which also reject service on a disabled | |
604 | * pipe. | |
605 | */ | |
606 | if (state->event && !state->active && !crtc->state->active) { | |
6ac7c548 RK |
607 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requesting event but off\n", |
608 | crtc->base.id, crtc->name); | |
4cba6850 DV |
609 | return -EINVAL; |
610 | } | |
611 | ||
5e743737 RC |
612 | return 0; |
613 | } | |
614 | ||
fceffb32 RC |
615 | static void drm_atomic_crtc_print_state(struct drm_printer *p, |
616 | const struct drm_crtc_state *state) | |
617 | { | |
618 | struct drm_crtc *crtc = state->crtc; | |
619 | ||
620 | drm_printf(p, "crtc[%u]: %s\n", crtc->base.id, crtc->name); | |
621 | drm_printf(p, "\tenable=%d\n", state->enable); | |
622 | drm_printf(p, "\tactive=%d\n", state->active); | |
623 | drm_printf(p, "\tplanes_changed=%d\n", state->planes_changed); | |
624 | drm_printf(p, "\tmode_changed=%d\n", state->mode_changed); | |
625 | drm_printf(p, "\tactive_changed=%d\n", state->active_changed); | |
626 | drm_printf(p, "\tconnectors_changed=%d\n", state->connectors_changed); | |
627 | drm_printf(p, "\tcolor_mgmt_changed=%d\n", state->color_mgmt_changed); | |
628 | drm_printf(p, "\tplane_mask=%x\n", state->plane_mask); | |
629 | drm_printf(p, "\tconnector_mask=%x\n", state->connector_mask); | |
630 | drm_printf(p, "\tencoder_mask=%x\n", state->encoder_mask); | |
631 | drm_printf(p, "\tmode: " DRM_MODE_FMT "\n", DRM_MODE_ARG(&state->mode)); | |
632 | ||
633 | if (crtc->funcs->atomic_print_state) | |
634 | crtc->funcs->atomic_print_state(p, state); | |
635 | } | |
636 | ||
cc4ceb48 DV |
637 | /** |
638 | * drm_atomic_get_plane_state - get plane state | |
639 | * @state: global atomic state object | |
640 | * @plane: plane to get state object for | |
641 | * | |
642 | * This function returns the plane state for the given plane, allocating it if | |
643 | * needed. It will also grab the relevant plane lock to make sure that the state | |
644 | * is consistent. | |
645 | * | |
646 | * Returns: | |
647 | * | |
648 | * Either the allocated state or the error code encoded into the pointer. When | |
649 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
650 | * entire atomic sequence must be restarted. All other errors are fatal. | |
651 | */ | |
652 | struct drm_plane_state * | |
653 | drm_atomic_get_plane_state(struct drm_atomic_state *state, | |
654 | struct drm_plane *plane) | |
655 | { | |
1b26a5e1 | 656 | int ret, index = drm_plane_index(plane); |
cc4ceb48 DV |
657 | struct drm_plane_state *plane_state; |
658 | ||
7f4eaa89 ML |
659 | WARN_ON(!state->acquire_ctx); |
660 | ||
1b26a5e1 ML |
661 | plane_state = drm_atomic_get_existing_plane_state(state, plane); |
662 | if (plane_state) | |
663 | return plane_state; | |
cc4ceb48 | 664 | |
4d02e2de | 665 | ret = drm_modeset_lock(&plane->mutex, state->acquire_ctx); |
cc4ceb48 DV |
666 | if (ret) |
667 | return ERR_PTR(ret); | |
668 | ||
669 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
670 | if (!plane_state) | |
671 | return ERR_PTR(-ENOMEM); | |
672 | ||
b8b5342b DV |
673 | state->planes[index].state = plane_state; |
674 | state->planes[index].ptr = plane; | |
581e49fe ML |
675 | state->planes[index].old_state = plane->state; |
676 | state->planes[index].new_state = plane_state; | |
cc4ceb48 DV |
677 | plane_state->state = state; |
678 | ||
9f4c97a2 VS |
679 | DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n", |
680 | plane->base.id, plane->name, plane_state, state); | |
cc4ceb48 DV |
681 | |
682 | if (plane_state->crtc) { | |
683 | struct drm_crtc_state *crtc_state; | |
684 | ||
685 | crtc_state = drm_atomic_get_crtc_state(state, | |
686 | plane_state->crtc); | |
687 | if (IS_ERR(crtc_state)) | |
688 | return ERR_CAST(crtc_state); | |
689 | } | |
690 | ||
691 | return plane_state; | |
692 | } | |
693 | EXPORT_SYMBOL(drm_atomic_get_plane_state); | |
694 | ||
40ecc694 RC |
695 | /** |
696 | * drm_atomic_plane_set_property - set property on plane | |
697 | * @plane: the drm plane to set a property on | |
698 | * @state: the state object to update with the new property value | |
699 | * @property: the property to set | |
700 | * @val: the new property value | |
701 | * | |
d574528a DV |
702 | * This function handles generic/core properties and calls out to driver's |
703 | * &drm_plane_funcs.atomic_set_property for driver properties. To ensure | |
704 | * consistent behavior you must call this function rather than the driver hook | |
705 | * directly. | |
40ecc694 RC |
706 | * |
707 | * RETURNS: | |
708 | * Zero on success, error code on failure | |
709 | */ | |
e90271bc | 710 | static int drm_atomic_plane_set_property(struct drm_plane *plane, |
40ecc694 RC |
711 | struct drm_plane_state *state, struct drm_property *property, |
712 | uint64_t val) | |
713 | { | |
6b4959f4 RC |
714 | struct drm_device *dev = plane->dev; |
715 | struct drm_mode_config *config = &dev->mode_config; | |
716 | ||
717 | if (property == config->prop_fb_id) { | |
718 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, val); | |
719 | drm_atomic_set_fb_for_plane(state, fb); | |
720 | if (fb) | |
a4a69da0 | 721 | drm_framebuffer_put(fb); |
96260142 GP |
722 | } else if (property == config->prop_in_fence_fd) { |
723 | if (state->fence) | |
724 | return -EINVAL; | |
725 | ||
726 | if (U642I64(val) == -1) | |
727 | return 0; | |
728 | ||
729 | state->fence = sync_file_get_fence(val); | |
730 | if (!state->fence) | |
731 | return -EINVAL; | |
732 | ||
6b4959f4 RC |
733 | } else if (property == config->prop_crtc_id) { |
734 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
735 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
736 | } else if (property == config->prop_crtc_x) { | |
737 | state->crtc_x = U642I64(val); | |
738 | } else if (property == config->prop_crtc_y) { | |
739 | state->crtc_y = U642I64(val); | |
740 | } else if (property == config->prop_crtc_w) { | |
741 | state->crtc_w = val; | |
742 | } else if (property == config->prop_crtc_h) { | |
743 | state->crtc_h = val; | |
744 | } else if (property == config->prop_src_x) { | |
745 | state->src_x = val; | |
746 | } else if (property == config->prop_src_y) { | |
747 | state->src_y = val; | |
748 | } else if (property == config->prop_src_w) { | |
749 | state->src_w = val; | |
750 | } else if (property == config->prop_src_h) { | |
751 | state->src_h = val; | |
6686df8c | 752 | } else if (property == plane->rotation_property) { |
c2c446ad | 753 | if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) |
6e0c7c33 | 754 | return -EINVAL; |
1da30627 | 755 | state->rotation = val; |
44d1240d MS |
756 | } else if (property == plane->zpos_property) { |
757 | state->zpos = val; | |
6b4959f4 RC |
758 | } else if (plane->funcs->atomic_set_property) { |
759 | return plane->funcs->atomic_set_property(plane, state, | |
760 | property, val); | |
761 | } else { | |
762 | return -EINVAL; | |
763 | } | |
764 | ||
765 | return 0; | |
40ecc694 | 766 | } |
40ecc694 | 767 | |
c0714fc9 DV |
768 | /** |
769 | * drm_atomic_plane_get_property - get property value from plane state | |
770 | * @plane: the drm plane to set a property on | |
771 | * @state: the state object to get the property value from | |
772 | * @property: the property to set | |
773 | * @val: return location for the property value | |
774 | * | |
d574528a DV |
775 | * This function handles generic/core properties and calls out to driver's |
776 | * &drm_plane_funcs.atomic_get_property for driver properties. To ensure | |
777 | * consistent behavior you must call this function rather than the driver hook | |
778 | * directly. | |
c0714fc9 DV |
779 | * |
780 | * RETURNS: | |
781 | * Zero on success, error code on failure | |
ac9c9256 | 782 | */ |
a97df1cc DV |
783 | static int |
784 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
ac9c9256 RC |
785 | const struct drm_plane_state *state, |
786 | struct drm_property *property, uint64_t *val) | |
787 | { | |
6b4959f4 RC |
788 | struct drm_device *dev = plane->dev; |
789 | struct drm_mode_config *config = &dev->mode_config; | |
790 | ||
791 | if (property == config->prop_fb_id) { | |
792 | *val = (state->fb) ? state->fb->base.id : 0; | |
96260142 GP |
793 | } else if (property == config->prop_in_fence_fd) { |
794 | *val = -1; | |
6b4959f4 RC |
795 | } else if (property == config->prop_crtc_id) { |
796 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
797 | } else if (property == config->prop_crtc_x) { | |
798 | *val = I642U64(state->crtc_x); | |
799 | } else if (property == config->prop_crtc_y) { | |
800 | *val = I642U64(state->crtc_y); | |
801 | } else if (property == config->prop_crtc_w) { | |
802 | *val = state->crtc_w; | |
803 | } else if (property == config->prop_crtc_h) { | |
804 | *val = state->crtc_h; | |
805 | } else if (property == config->prop_src_x) { | |
806 | *val = state->src_x; | |
807 | } else if (property == config->prop_src_y) { | |
808 | *val = state->src_y; | |
809 | } else if (property == config->prop_src_w) { | |
810 | *val = state->src_w; | |
811 | } else if (property == config->prop_src_h) { | |
812 | *val = state->src_h; | |
6686df8c | 813 | } else if (property == plane->rotation_property) { |
4cda09ca | 814 | *val = state->rotation; |
44d1240d MS |
815 | } else if (property == plane->zpos_property) { |
816 | *val = state->zpos; | |
6b4959f4 | 817 | } else if (plane->funcs->atomic_get_property) { |
ac9c9256 | 818 | return plane->funcs->atomic_get_property(plane, state, property, val); |
6b4959f4 RC |
819 | } else { |
820 | return -EINVAL; | |
821 | } | |
822 | ||
823 | return 0; | |
ac9c9256 | 824 | } |
ac9c9256 | 825 | |
f8aeb41c DV |
826 | static bool |
827 | plane_switching_crtc(struct drm_atomic_state *state, | |
828 | struct drm_plane *plane, | |
829 | struct drm_plane_state *plane_state) | |
830 | { | |
831 | if (!plane->state->crtc || !plane_state->crtc) | |
832 | return false; | |
833 | ||
834 | if (plane->state->crtc == plane_state->crtc) | |
835 | return false; | |
836 | ||
837 | /* This could be refined, but currently there's no helper or driver code | |
838 | * to implement direct switching of active planes nor userspace to take | |
839 | * advantage of more direct plane switching without the intermediate | |
840 | * full OFF state. | |
841 | */ | |
842 | return true; | |
843 | } | |
844 | ||
5e743737 RC |
845 | /** |
846 | * drm_atomic_plane_check - check plane state | |
847 | * @plane: plane to check | |
848 | * @state: plane state to check | |
849 | * | |
850 | * Provides core sanity checks for plane state. | |
851 | * | |
852 | * RETURNS: | |
853 | * Zero on success, error code on failure | |
854 | */ | |
855 | static int drm_atomic_plane_check(struct drm_plane *plane, | |
856 | struct drm_plane_state *state) | |
857 | { | |
858 | unsigned int fb_width, fb_height; | |
ead8610d | 859 | int ret; |
5e743737 RC |
860 | |
861 | /* either *both* CRTC and FB must be set, or neither */ | |
862 | if (WARN_ON(state->crtc && !state->fb)) { | |
17a38d9c | 863 | DRM_DEBUG_ATOMIC("CRTC set but no FB\n"); |
5e743737 RC |
864 | return -EINVAL; |
865 | } else if (WARN_ON(state->fb && !state->crtc)) { | |
17a38d9c | 866 | DRM_DEBUG_ATOMIC("FB set but no CRTC\n"); |
5e743737 RC |
867 | return -EINVAL; |
868 | } | |
869 | ||
870 | /* if disabled, we don't care about the rest of the state: */ | |
871 | if (!state->crtc) | |
872 | return 0; | |
873 | ||
874 | /* Check whether this plane is usable on this CRTC */ | |
875 | if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { | |
17a38d9c | 876 | DRM_DEBUG_ATOMIC("Invalid crtc for plane\n"); |
5e743737 RC |
877 | return -EINVAL; |
878 | } | |
879 | ||
880 | /* Check whether this plane supports the fb pixel format. */ | |
438b74a5 | 881 | ret = drm_plane_check_pixel_format(plane, state->fb->format->format); |
ead8610d | 882 | if (ret) { |
b3c11ac2 EE |
883 | struct drm_format_name_buf format_name; |
884 | DRM_DEBUG_ATOMIC("Invalid pixel format %s\n", | |
438b74a5 | 885 | drm_get_format_name(state->fb->format->format, |
b3c11ac2 | 886 | &format_name)); |
ead8610d | 887 | return ret; |
5e743737 RC |
888 | } |
889 | ||
890 | /* Give drivers some help against integer overflows */ | |
891 | if (state->crtc_w > INT_MAX || | |
892 | state->crtc_x > INT_MAX - (int32_t) state->crtc_w || | |
893 | state->crtc_h > INT_MAX || | |
894 | state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { | |
17a38d9c DV |
895 | DRM_DEBUG_ATOMIC("Invalid CRTC coordinates %ux%u+%d+%d\n", |
896 | state->crtc_w, state->crtc_h, | |
897 | state->crtc_x, state->crtc_y); | |
5e743737 RC |
898 | return -ERANGE; |
899 | } | |
900 | ||
901 | fb_width = state->fb->width << 16; | |
902 | fb_height = state->fb->height << 16; | |
903 | ||
904 | /* Make sure source coordinates are inside the fb. */ | |
905 | if (state->src_w > fb_width || | |
906 | state->src_x > fb_width - state->src_w || | |
907 | state->src_h > fb_height || | |
908 | state->src_y > fb_height - state->src_h) { | |
17a38d9c | 909 | DRM_DEBUG_ATOMIC("Invalid source coordinates " |
0338f0d0 | 910 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n", |
17a38d9c DV |
911 | state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, |
912 | state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, | |
913 | state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, | |
0338f0d0 VS |
914 | state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10, |
915 | state->fb->width, state->fb->height); | |
5e743737 RC |
916 | return -ENOSPC; |
917 | } | |
918 | ||
f8aeb41c | 919 | if (plane_switching_crtc(state->state, plane, state)) { |
9f4c97a2 VS |
920 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", |
921 | plane->base.id, plane->name); | |
f8aeb41c DV |
922 | return -EINVAL; |
923 | } | |
924 | ||
5e743737 RC |
925 | return 0; |
926 | } | |
927 | ||
fceffb32 RC |
928 | static void drm_atomic_plane_print_state(struct drm_printer *p, |
929 | const struct drm_plane_state *state) | |
930 | { | |
931 | struct drm_plane *plane = state->plane; | |
932 | struct drm_rect src = drm_plane_state_src(state); | |
933 | struct drm_rect dest = drm_plane_state_dest(state); | |
934 | ||
935 | drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name); | |
936 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
937 | drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0); | |
938 | if (state->fb) { | |
939 | struct drm_framebuffer *fb = state->fb; | |
bcb0b461 | 940 | int i, n = fb->format->num_planes; |
b3c11ac2 | 941 | struct drm_format_name_buf format_name; |
fceffb32 RC |
942 | |
943 | drm_printf(p, "\t\tformat=%s\n", | |
438b74a5 | 944 | drm_get_format_name(fb->format->format, &format_name)); |
bae781b2 | 945 | drm_printf(p, "\t\t\tmodifier=0x%llx\n", fb->modifier); |
fceffb32 RC |
946 | drm_printf(p, "\t\tsize=%dx%d\n", fb->width, fb->height); |
947 | drm_printf(p, "\t\tlayers:\n"); | |
948 | for (i = 0; i < n; i++) { | |
949 | drm_printf(p, "\t\t\tpitch[%d]=%u\n", i, fb->pitches[i]); | |
950 | drm_printf(p, "\t\t\toffset[%d]=%u\n", i, fb->offsets[i]); | |
fceffb32 RC |
951 | } |
952 | } | |
953 | drm_printf(p, "\tcrtc-pos=" DRM_RECT_FMT "\n", DRM_RECT_ARG(&dest)); | |
954 | drm_printf(p, "\tsrc-pos=" DRM_RECT_FP_FMT "\n", DRM_RECT_FP_ARG(&src)); | |
955 | drm_printf(p, "\trotation=%x\n", state->rotation); | |
956 | ||
957 | if (plane->funcs->atomic_print_state) | |
958 | plane->funcs->atomic_print_state(p, state); | |
959 | } | |
960 | ||
a4370c77 VS |
961 | /** |
962 | * drm_atomic_private_obj_init - initialize private object | |
963 | * @obj: private object | |
964 | * @state: initial private object state | |
965 | * @funcs: pointer to the struct of function pointers that identify the object | |
966 | * type | |
967 | * | |
968 | * Initialize the private object, which can be embedded into any | |
969 | * driver private object that needs its own atomic state. | |
970 | */ | |
971 | void | |
972 | drm_atomic_private_obj_init(struct drm_private_obj *obj, | |
973 | struct drm_private_state *state, | |
974 | const struct drm_private_state_funcs *funcs) | |
975 | { | |
976 | memset(obj, 0, sizeof(*obj)); | |
977 | ||
978 | obj->state = state; | |
979 | obj->funcs = funcs; | |
980 | } | |
981 | EXPORT_SYMBOL(drm_atomic_private_obj_init); | |
982 | ||
983 | /** | |
984 | * drm_atomic_private_obj_fini - finalize private object | |
985 | * @obj: private object | |
986 | * | |
987 | * Finalize the private object. | |
988 | */ | |
989 | void | |
990 | drm_atomic_private_obj_fini(struct drm_private_obj *obj) | |
991 | { | |
992 | obj->funcs->atomic_destroy_state(obj, obj->state); | |
993 | } | |
994 | EXPORT_SYMBOL(drm_atomic_private_obj_fini); | |
995 | ||
b430c27a PD |
996 | /** |
997 | * drm_atomic_get_private_obj_state - get private object state | |
998 | * @state: global atomic state | |
999 | * @obj: private object to get the state for | |
b430c27a PD |
1000 | * |
1001 | * This function returns the private object state for the given private object, | |
1002 | * allocating the state if needed. It does not grab any locks as the caller is | |
1003 | * expected to care of any required locking. | |
1004 | * | |
1005 | * RETURNS: | |
1006 | * | |
1007 | * Either the allocated state or the error code encoded into a pointer. | |
1008 | */ | |
a4370c77 VS |
1009 | struct drm_private_state * |
1010 | drm_atomic_get_private_obj_state(struct drm_atomic_state *state, | |
1011 | struct drm_private_obj *obj) | |
b430c27a PD |
1012 | { |
1013 | int index, num_objs, i; | |
1014 | size_t size; | |
1015 | struct __drm_private_objs_state *arr; | |
a4370c77 | 1016 | struct drm_private_state *obj_state; |
b430c27a PD |
1017 | |
1018 | for (i = 0; i < state->num_private_objs; i++) | |
a4370c77 VS |
1019 | if (obj == state->private_objs[i].ptr) |
1020 | return state->private_objs[i].state; | |
b430c27a PD |
1021 | |
1022 | num_objs = state->num_private_objs + 1; | |
1023 | size = sizeof(*state->private_objs) * num_objs; | |
1024 | arr = krealloc(state->private_objs, size, GFP_KERNEL); | |
1025 | if (!arr) | |
1026 | return ERR_PTR(-ENOMEM); | |
1027 | ||
1028 | state->private_objs = arr; | |
1029 | index = state->num_private_objs; | |
1030 | memset(&state->private_objs[index], 0, sizeof(*state->private_objs)); | |
1031 | ||
a4370c77 VS |
1032 | obj_state = obj->funcs->atomic_duplicate_state(obj); |
1033 | if (!obj_state) | |
b430c27a PD |
1034 | return ERR_PTR(-ENOMEM); |
1035 | ||
a4370c77 VS |
1036 | state->private_objs[index].state = obj_state; |
1037 | state->private_objs[index].old_state = obj->state; | |
1038 | state->private_objs[index].new_state = obj_state; | |
1039 | state->private_objs[index].ptr = obj; | |
1040 | ||
b430c27a PD |
1041 | state->num_private_objs = num_objs; |
1042 | ||
a4370c77 VS |
1043 | DRM_DEBUG_ATOMIC("Added new private object %p state %p to %p\n", |
1044 | obj, obj_state, state); | |
b430c27a | 1045 | |
a4370c77 | 1046 | return obj_state; |
b430c27a PD |
1047 | } |
1048 | EXPORT_SYMBOL(drm_atomic_get_private_obj_state); | |
1049 | ||
cc4ceb48 DV |
1050 | /** |
1051 | * drm_atomic_get_connector_state - get connector state | |
1052 | * @state: global atomic state object | |
1053 | * @connector: connector to get state object for | |
1054 | * | |
1055 | * This function returns the connector state for the given connector, | |
1056 | * allocating it if needed. It will also grab the relevant connector lock to | |
1057 | * make sure that the state is consistent. | |
1058 | * | |
1059 | * Returns: | |
1060 | * | |
1061 | * Either the allocated state or the error code encoded into the pointer. When | |
1062 | * the error is EDEADLK then the w/w mutex code has detected a deadlock and the | |
1063 | * entire atomic sequence must be restarted. All other errors are fatal. | |
1064 | */ | |
1065 | struct drm_connector_state * | |
1066 | drm_atomic_get_connector_state(struct drm_atomic_state *state, | |
1067 | struct drm_connector *connector) | |
1068 | { | |
1069 | int ret, index; | |
1070 | struct drm_mode_config *config = &connector->dev->mode_config; | |
1071 | struct drm_connector_state *connector_state; | |
1072 | ||
7f4eaa89 ML |
1073 | WARN_ON(!state->acquire_ctx); |
1074 | ||
c7eb76f4 DV |
1075 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1076 | if (ret) | |
1077 | return ERR_PTR(ret); | |
1078 | ||
cc4ceb48 DV |
1079 | index = drm_connector_index(connector); |
1080 | ||
f52b69f1 | 1081 | if (index >= state->num_connector) { |
63e83c1d | 1082 | struct __drm_connnectors_state *c; |
5fff80bb ML |
1083 | int alloc = max(index + 1, config->num_connector); |
1084 | ||
1085 | c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); | |
1086 | if (!c) | |
1087 | return ERR_PTR(-ENOMEM); | |
1088 | ||
1089 | state->connectors = c; | |
1090 | memset(&state->connectors[state->num_connector], 0, | |
1091 | sizeof(*state->connectors) * (alloc - state->num_connector)); | |
1092 | ||
5fff80bb | 1093 | state->num_connector = alloc; |
f52b69f1 DV |
1094 | } |
1095 | ||
63e83c1d DV |
1096 | if (state->connectors[index].state) |
1097 | return state->connectors[index].state; | |
cc4ceb48 | 1098 | |
cc4ceb48 DV |
1099 | connector_state = connector->funcs->atomic_duplicate_state(connector); |
1100 | if (!connector_state) | |
1101 | return ERR_PTR(-ENOMEM); | |
1102 | ||
ad093607 | 1103 | drm_connector_get(connector); |
63e83c1d | 1104 | state->connectors[index].state = connector_state; |
581e49fe ML |
1105 | state->connectors[index].old_state = connector->state; |
1106 | state->connectors[index].new_state = connector_state; | |
63e83c1d | 1107 | state->connectors[index].ptr = connector; |
cc4ceb48 DV |
1108 | connector_state->state = state; |
1109 | ||
6ac7c548 RK |
1110 | DRM_DEBUG_ATOMIC("Added [CONNECTOR:%d:%s] %p state to %p\n", |
1111 | connector->base.id, connector->name, | |
1112 | connector_state, state); | |
cc4ceb48 DV |
1113 | |
1114 | if (connector_state->crtc) { | |
1115 | struct drm_crtc_state *crtc_state; | |
1116 | ||
1117 | crtc_state = drm_atomic_get_crtc_state(state, | |
1118 | connector_state->crtc); | |
1119 | if (IS_ERR(crtc_state)) | |
1120 | return ERR_CAST(crtc_state); | |
1121 | } | |
1122 | ||
1123 | return connector_state; | |
1124 | } | |
1125 | EXPORT_SYMBOL(drm_atomic_get_connector_state); | |
1126 | ||
40ecc694 RC |
1127 | /** |
1128 | * drm_atomic_connector_set_property - set property on connector. | |
1129 | * @connector: the drm connector to set a property on | |
1130 | * @state: the state object to update with the new property value | |
1131 | * @property: the property to set | |
1132 | * @val: the new property value | |
1133 | * | |
d574528a DV |
1134 | * This function handles generic/core properties and calls out to driver's |
1135 | * &drm_connector_funcs.atomic_set_property for driver properties. To ensure | |
1136 | * consistent behavior you must call this function rather than the driver hook | |
1137 | * directly. | |
40ecc694 RC |
1138 | * |
1139 | * RETURNS: | |
1140 | * Zero on success, error code on failure | |
1141 | */ | |
482b0e3c | 1142 | static int drm_atomic_connector_set_property(struct drm_connector *connector, |
40ecc694 RC |
1143 | struct drm_connector_state *state, struct drm_property *property, |
1144 | uint64_t val) | |
1145 | { | |
1146 | struct drm_device *dev = connector->dev; | |
1147 | struct drm_mode_config *config = &dev->mode_config; | |
1148 | ||
ae16c597 RC |
1149 | if (property == config->prop_crtc_id) { |
1150 | struct drm_crtc *crtc = drm_crtc_find(dev, val); | |
1151 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
1152 | } else if (property == config->dpms_property) { | |
40ecc694 RC |
1153 | /* setting DPMS property requires special handling, which |
1154 | * is done in legacy setprop path for us. Disallow (for | |
1155 | * now?) atomic writes to DPMS property: | |
1156 | */ | |
1157 | return -EINVAL; | |
299a16b1 BB |
1158 | } else if (property == config->tv_select_subconnector_property) { |
1159 | state->tv.subconnector = val; | |
1160 | } else if (property == config->tv_left_margin_property) { | |
1161 | state->tv.margins.left = val; | |
1162 | } else if (property == config->tv_right_margin_property) { | |
1163 | state->tv.margins.right = val; | |
1164 | } else if (property == config->tv_top_margin_property) { | |
1165 | state->tv.margins.top = val; | |
1166 | } else if (property == config->tv_bottom_margin_property) { | |
1167 | state->tv.margins.bottom = val; | |
1168 | } else if (property == config->tv_mode_property) { | |
1169 | state->tv.mode = val; | |
1170 | } else if (property == config->tv_brightness_property) { | |
1171 | state->tv.brightness = val; | |
1172 | } else if (property == config->tv_contrast_property) { | |
1173 | state->tv.contrast = val; | |
1174 | } else if (property == config->tv_flicker_reduction_property) { | |
1175 | state->tv.flicker_reduction = val; | |
1176 | } else if (property == config->tv_overscan_property) { | |
1177 | state->tv.overscan = val; | |
1178 | } else if (property == config->tv_saturation_property) { | |
1179 | state->tv.saturation = val; | |
1180 | } else if (property == config->tv_hue_property) { | |
1181 | state->tv.hue = val; | |
40ee6fbe MN |
1182 | } else if (property == config->link_status_property) { |
1183 | /* Never downgrade from GOOD to BAD on userspace's request here, | |
1184 | * only hw issues can do that. | |
1185 | * | |
1186 | * For an atomic property the userspace doesn't need to be able | |
1187 | * to understand all the properties, but needs to be able to | |
1188 | * restore the state it wants on VT switch. So if the userspace | |
1189 | * tries to change the link_status from GOOD to BAD, driver | |
1190 | * silently rejects it and returns a 0. This prevents userspace | |
1191 | * from accidently breaking the display when it restores the | |
1192 | * state. | |
1193 | */ | |
1194 | if (state->link_status != DRM_LINK_STATUS_GOOD) | |
1195 | state->link_status = val; | |
0e9f25d0 ML |
1196 | } else if (property == config->aspect_ratio_property) { |
1197 | state->picture_aspect_ratio = val; | |
8f6e1e22 ML |
1198 | } else if (property == connector->scaling_mode_property) { |
1199 | state->scaling_mode = val; | |
40ecc694 RC |
1200 | } else if (connector->funcs->atomic_set_property) { |
1201 | return connector->funcs->atomic_set_property(connector, | |
1202 | state, property, val); | |
1203 | } else { | |
1204 | return -EINVAL; | |
1205 | } | |
299a16b1 BB |
1206 | |
1207 | return 0; | |
40ecc694 | 1208 | } |
40ecc694 | 1209 | |
fceffb32 RC |
1210 | static void drm_atomic_connector_print_state(struct drm_printer *p, |
1211 | const struct drm_connector_state *state) | |
1212 | { | |
1213 | struct drm_connector *connector = state->connector; | |
1214 | ||
1215 | drm_printf(p, "connector[%u]: %s\n", connector->base.id, connector->name); | |
1216 | drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)"); | |
1217 | ||
1218 | if (connector->funcs->atomic_print_state) | |
1219 | connector->funcs->atomic_print_state(p, state); | |
1220 | } | |
1221 | ||
c0714fc9 DV |
1222 | /** |
1223 | * drm_atomic_connector_get_property - get property value from connector state | |
1224 | * @connector: the drm connector to set a property on | |
1225 | * @state: the state object to get the property value from | |
1226 | * @property: the property to set | |
1227 | * @val: return location for the property value | |
1228 | * | |
d574528a DV |
1229 | * This function handles generic/core properties and calls out to driver's |
1230 | * &drm_connector_funcs.atomic_get_property for driver properties. To ensure | |
1231 | * consistent behavior you must call this function rather than the driver hook | |
1232 | * directly. | |
c0714fc9 DV |
1233 | * |
1234 | * RETURNS: | |
1235 | * Zero on success, error code on failure | |
ac9c9256 | 1236 | */ |
a97df1cc DV |
1237 | static int |
1238 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
ac9c9256 RC |
1239 | const struct drm_connector_state *state, |
1240 | struct drm_property *property, uint64_t *val) | |
1241 | { | |
1242 | struct drm_device *dev = connector->dev; | |
1243 | struct drm_mode_config *config = &dev->mode_config; | |
1244 | ||
ae16c597 RC |
1245 | if (property == config->prop_crtc_id) { |
1246 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
1247 | } else if (property == config->dpms_property) { | |
ac9c9256 | 1248 | *val = connector->dpms; |
299a16b1 BB |
1249 | } else if (property == config->tv_select_subconnector_property) { |
1250 | *val = state->tv.subconnector; | |
1251 | } else if (property == config->tv_left_margin_property) { | |
1252 | *val = state->tv.margins.left; | |
1253 | } else if (property == config->tv_right_margin_property) { | |
1254 | *val = state->tv.margins.right; | |
1255 | } else if (property == config->tv_top_margin_property) { | |
1256 | *val = state->tv.margins.top; | |
1257 | } else if (property == config->tv_bottom_margin_property) { | |
1258 | *val = state->tv.margins.bottom; | |
1259 | } else if (property == config->tv_mode_property) { | |
1260 | *val = state->tv.mode; | |
1261 | } else if (property == config->tv_brightness_property) { | |
1262 | *val = state->tv.brightness; | |
1263 | } else if (property == config->tv_contrast_property) { | |
1264 | *val = state->tv.contrast; | |
1265 | } else if (property == config->tv_flicker_reduction_property) { | |
1266 | *val = state->tv.flicker_reduction; | |
1267 | } else if (property == config->tv_overscan_property) { | |
1268 | *val = state->tv.overscan; | |
1269 | } else if (property == config->tv_saturation_property) { | |
1270 | *val = state->tv.saturation; | |
1271 | } else if (property == config->tv_hue_property) { | |
1272 | *val = state->tv.hue; | |
40ee6fbe MN |
1273 | } else if (property == config->link_status_property) { |
1274 | *val = state->link_status; | |
0e9f25d0 ML |
1275 | } else if (property == config->aspect_ratio_property) { |
1276 | *val = state->picture_aspect_ratio; | |
8f6e1e22 ML |
1277 | } else if (property == connector->scaling_mode_property) { |
1278 | *val = state->scaling_mode; | |
ac9c9256 RC |
1279 | } else if (connector->funcs->atomic_get_property) { |
1280 | return connector->funcs->atomic_get_property(connector, | |
1281 | state, property, val); | |
1282 | } else { | |
1283 | return -EINVAL; | |
1284 | } | |
1285 | ||
1286 | return 0; | |
1287 | } | |
ac9c9256 | 1288 | |
88a48e29 RC |
1289 | int drm_atomic_get_property(struct drm_mode_object *obj, |
1290 | struct drm_property *property, uint64_t *val) | |
1291 | { | |
1292 | struct drm_device *dev = property->dev; | |
1293 | int ret; | |
1294 | ||
1295 | switch (obj->type) { | |
1296 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1297 | struct drm_connector *connector = obj_to_connector(obj); | |
1298 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
1299 | ret = drm_atomic_connector_get_property(connector, | |
1300 | connector->state, property, val); | |
1301 | break; | |
1302 | } | |
1303 | case DRM_MODE_OBJECT_CRTC: { | |
1304 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1305 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
1306 | ret = drm_atomic_crtc_get_property(crtc, | |
1307 | crtc->state, property, val); | |
1308 | break; | |
1309 | } | |
1310 | case DRM_MODE_OBJECT_PLANE: { | |
1311 | struct drm_plane *plane = obj_to_plane(obj); | |
1312 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
1313 | ret = drm_atomic_plane_get_property(plane, | |
1314 | plane->state, property, val); | |
1315 | break; | |
1316 | } | |
1317 | default: | |
1318 | ret = -EINVAL; | |
1319 | break; | |
1320 | } | |
1321 | ||
1322 | return ret; | |
1323 | } | |
1324 | ||
cc4ceb48 DV |
1325 | /** |
1326 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
07cc0ef6 | 1327 | * @plane_state: the plane whose incoming state to update |
cc4ceb48 DV |
1328 | * @crtc: crtc to use for the plane |
1329 | * | |
1330 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
1331 | * for the new crtc, as needed. This function takes care of all these details | |
1332 | * besides updating the pointer in the state object itself. | |
1333 | * | |
1334 | * Returns: | |
1335 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1336 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1337 | * sequence must be restarted. All other errors are fatal. | |
1338 | */ | |
1339 | int | |
07cc0ef6 DV |
1340 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, |
1341 | struct drm_crtc *crtc) | |
cc4ceb48 | 1342 | { |
07cc0ef6 | 1343 | struct drm_plane *plane = plane_state->plane; |
cc4ceb48 DV |
1344 | struct drm_crtc_state *crtc_state; |
1345 | ||
6ddd388a RC |
1346 | if (plane_state->crtc) { |
1347 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1348 | plane_state->crtc); | |
1349 | if (WARN_ON(IS_ERR(crtc_state))) | |
1350 | return PTR_ERR(crtc_state); | |
1351 | ||
1352 | crtc_state->plane_mask &= ~(1 << drm_plane_index(plane)); | |
1353 | } | |
1354 | ||
1355 | plane_state->crtc = crtc; | |
1356 | ||
cc4ceb48 DV |
1357 | if (crtc) { |
1358 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
1359 | crtc); | |
1360 | if (IS_ERR(crtc_state)) | |
1361 | return PTR_ERR(crtc_state); | |
6ddd388a | 1362 | crtc_state->plane_mask |= (1 << drm_plane_index(plane)); |
cc4ceb48 DV |
1363 | } |
1364 | ||
cc4ceb48 | 1365 | if (crtc) |
fa3ab4c2 VS |
1366 | DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n", |
1367 | plane_state, crtc->base.id, crtc->name); | |
cc4ceb48 | 1368 | else |
17a38d9c DV |
1369 | DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n", |
1370 | plane_state); | |
cc4ceb48 DV |
1371 | |
1372 | return 0; | |
1373 | } | |
1374 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
1375 | ||
321ebf04 | 1376 | /** |
16d78bc2 | 1377 | * drm_atomic_set_fb_for_plane - set framebuffer for plane |
321ebf04 DV |
1378 | * @plane_state: atomic state object for the plane |
1379 | * @fb: fb to use for the plane | |
1380 | * | |
1381 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
1382 | * to the new fb and drop the reference to the old fb, if there is one. This | |
1383 | * function takes care of all these details besides updating the pointer in the | |
1384 | * state object itself. | |
1385 | */ | |
1386 | void | |
1387 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
1388 | struct drm_framebuffer *fb) | |
1389 | { | |
321ebf04 | 1390 | if (fb) |
17a38d9c DV |
1391 | DRM_DEBUG_ATOMIC("Set [FB:%d] for plane state %p\n", |
1392 | fb->base.id, plane_state); | |
321ebf04 | 1393 | else |
17a38d9c DV |
1394 | DRM_DEBUG_ATOMIC("Set [NOFB] for plane state %p\n", |
1395 | plane_state); | |
389f78b3 CW |
1396 | |
1397 | drm_framebuffer_assign(&plane_state->fb, fb); | |
321ebf04 DV |
1398 | } |
1399 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
1400 | ||
13b55664 GP |
1401 | /** |
1402 | * drm_atomic_set_fence_for_plane - set fence for plane | |
1403 | * @plane_state: atomic state object for the plane | |
1404 | * @fence: dma_fence to use for the plane | |
1405 | * | |
1406 | * Helper to setup the plane_state fence in case it is not set yet. | |
1407 | * By using this drivers doesn't need to worry if the user choose | |
1408 | * implicit or explicit fencing. | |
1409 | * | |
1410 | * This function will not set the fence to the state if it was set | |
d574528a DV |
1411 | * via explicit fencing interfaces on the atomic ioctl. In that case it will |
1412 | * drop the reference to the fence as we are not storing it anywhere. | |
1413 | * Otherwise, if &drm_plane_state.fence is not set this function we just set it | |
1414 | * with the received implicit fence. In both cases this function consumes a | |
1415 | * reference for @fence. | |
13b55664 GP |
1416 | */ |
1417 | void | |
1418 | drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state, | |
1419 | struct dma_fence *fence) | |
1420 | { | |
1421 | if (plane_state->fence) { | |
1422 | dma_fence_put(fence); | |
1423 | return; | |
1424 | } | |
1425 | ||
1426 | plane_state->fence = fence; | |
1427 | } | |
1428 | EXPORT_SYMBOL(drm_atomic_set_fence_for_plane); | |
1429 | ||
cc4ceb48 DV |
1430 | /** |
1431 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
1432 | * @conn_state: atomic state object for the connector | |
1433 | * @crtc: crtc to use for the connector | |
1434 | * | |
1435 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
1436 | * state for the new crtc, as needed. This function takes care of all these | |
1437 | * details besides updating the pointer in the state object itself. | |
1438 | * | |
1439 | * Returns: | |
1440 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1441 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1442 | * sequence must be restarted. All other errors are fatal. | |
1443 | */ | |
1444 | int | |
1445 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
1446 | struct drm_crtc *crtc) | |
1447 | { | |
1448 | struct drm_crtc_state *crtc_state; | |
1449 | ||
e2d800a3 CW |
1450 | if (conn_state->crtc == crtc) |
1451 | return 0; | |
1452 | ||
1453 | if (conn_state->crtc) { | |
b4d93679 ML |
1454 | crtc_state = drm_atomic_get_new_crtc_state(conn_state->state, |
1455 | conn_state->crtc); | |
4cd9fa52 ML |
1456 | |
1457 | crtc_state->connector_mask &= | |
1458 | ~(1 << drm_connector_index(conn_state->connector)); | |
e2d800a3 | 1459 | |
ad093607 | 1460 | drm_connector_put(conn_state->connector); |
e2d800a3 | 1461 | conn_state->crtc = NULL; |
4cd9fa52 ML |
1462 | } |
1463 | ||
cc4ceb48 DV |
1464 | if (crtc) { |
1465 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
1466 | if (IS_ERR(crtc_state)) | |
1467 | return PTR_ERR(crtc_state); | |
4cd9fa52 ML |
1468 | |
1469 | crtc_state->connector_mask |= | |
1470 | 1 << drm_connector_index(conn_state->connector); | |
cc4ceb48 | 1471 | |
ad093607 | 1472 | drm_connector_get(conn_state->connector); |
e2d800a3 | 1473 | conn_state->crtc = crtc; |
cc4ceb48 | 1474 | |
fa3ab4c2 VS |
1475 | DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n", |
1476 | conn_state, crtc->base.id, crtc->name); | |
e2d800a3 | 1477 | } else { |
17a38d9c DV |
1478 | DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n", |
1479 | conn_state); | |
e2d800a3 | 1480 | } |
cc4ceb48 DV |
1481 | |
1482 | return 0; | |
1483 | } | |
1484 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
1485 | ||
1486 | /** | |
1487 | * drm_atomic_add_affected_connectors - add connectors for crtc | |
1488 | * @state: atomic state | |
1489 | * @crtc: DRM crtc | |
1490 | * | |
1491 | * This function walks the current configuration and adds all connectors | |
1492 | * currently using @crtc to the atomic configuration @state. Note that this | |
1493 | * function must acquire the connection mutex. This can potentially cause | |
1494 | * unneeded seralization if the update is just for the planes on one crtc. Hence | |
1495 | * drivers and helpers should only call this when really needed (e.g. when a | |
1496 | * full modeset needs to happen due to some change). | |
1497 | * | |
1498 | * Returns: | |
1499 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1500 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1501 | * sequence must be restarted. All other errors are fatal. | |
1502 | */ | |
1503 | int | |
1504 | drm_atomic_add_affected_connectors(struct drm_atomic_state *state, | |
1505 | struct drm_crtc *crtc) | |
1506 | { | |
1507 | struct drm_mode_config *config = &state->dev->mode_config; | |
1508 | struct drm_connector *connector; | |
1509 | struct drm_connector_state *conn_state; | |
613051da | 1510 | struct drm_connector_list_iter conn_iter; |
5351bbdd | 1511 | struct drm_crtc_state *crtc_state; |
cc4ceb48 DV |
1512 | int ret; |
1513 | ||
5351bbdd ML |
1514 | crtc_state = drm_atomic_get_crtc_state(state, crtc); |
1515 | if (IS_ERR(crtc_state)) | |
1516 | return PTR_ERR(crtc_state); | |
1517 | ||
cc4ceb48 DV |
1518 | ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx); |
1519 | if (ret) | |
1520 | return ret; | |
1521 | ||
fa3ab4c2 VS |
1522 | DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n", |
1523 | crtc->base.id, crtc->name, state); | |
cc4ceb48 DV |
1524 | |
1525 | /* | |
5351bbdd ML |
1526 | * Changed connectors are already in @state, so only need to look |
1527 | * at the connector_mask in crtc_state. | |
cc4ceb48 | 1528 | */ |
b982dab1 | 1529 | drm_connector_list_iter_begin(state->dev, &conn_iter); |
613051da | 1530 | drm_for_each_connector_iter(connector, &conn_iter) { |
5351bbdd | 1531 | if (!(crtc_state->connector_mask & (1 << drm_connector_index(connector)))) |
cc4ceb48 DV |
1532 | continue; |
1533 | ||
1534 | conn_state = drm_atomic_get_connector_state(state, connector); | |
613051da | 1535 | if (IS_ERR(conn_state)) { |
b982dab1 | 1536 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 | 1537 | return PTR_ERR(conn_state); |
613051da | 1538 | } |
cc4ceb48 | 1539 | } |
b982dab1 | 1540 | drm_connector_list_iter_end(&conn_iter); |
cc4ceb48 DV |
1541 | |
1542 | return 0; | |
1543 | } | |
1544 | EXPORT_SYMBOL(drm_atomic_add_affected_connectors); | |
1545 | ||
e01e9f75 ML |
1546 | /** |
1547 | * drm_atomic_add_affected_planes - add planes for crtc | |
1548 | * @state: atomic state | |
1549 | * @crtc: DRM crtc | |
1550 | * | |
1551 | * This function walks the current configuration and adds all planes | |
1552 | * currently used by @crtc to the atomic configuration @state. This is useful | |
1553 | * when an atomic commit also needs to check all currently enabled plane on | |
1554 | * @crtc, e.g. when changing the mode. It's also useful when re-enabling a CRTC | |
1555 | * to avoid special code to force-enable all planes. | |
1556 | * | |
1557 | * Since acquiring a plane state will always also acquire the w/w mutex of the | |
1558 | * current CRTC for that plane (if there is any) adding all the plane states for | |
1559 | * a CRTC will not reduce parallism of atomic updates. | |
1560 | * | |
1561 | * Returns: | |
1562 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
1563 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
1564 | * sequence must be restarted. All other errors are fatal. | |
1565 | */ | |
1566 | int | |
1567 | drm_atomic_add_affected_planes(struct drm_atomic_state *state, | |
1568 | struct drm_crtc *crtc) | |
1569 | { | |
1570 | struct drm_plane *plane; | |
1571 | ||
b4d93679 | 1572 | WARN_ON(!drm_atomic_get_new_crtc_state(state, crtc)); |
e01e9f75 ML |
1573 | |
1574 | drm_for_each_plane_mask(plane, state->dev, crtc->state->plane_mask) { | |
1575 | struct drm_plane_state *plane_state = | |
1576 | drm_atomic_get_plane_state(state, plane); | |
1577 | ||
1578 | if (IS_ERR(plane_state)) | |
1579 | return PTR_ERR(plane_state); | |
1580 | } | |
1581 | return 0; | |
1582 | } | |
1583 | EXPORT_SYMBOL(drm_atomic_add_affected_planes); | |
1584 | ||
cc4ceb48 DV |
1585 | /** |
1586 | * drm_atomic_check_only - check whether a given config would work | |
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 | * | |
1593 | * Returns: | |
1594 | * 0 on success, negative error code on failure. | |
1595 | */ | |
1596 | int drm_atomic_check_only(struct drm_atomic_state *state) | |
1597 | { | |
5e743737 RC |
1598 | struct drm_device *dev = state->dev; |
1599 | struct drm_mode_config *config = &dev->mode_config; | |
df63b999 ACO |
1600 | struct drm_plane *plane; |
1601 | struct drm_plane_state *plane_state; | |
1602 | struct drm_crtc *crtc; | |
1603 | struct drm_crtc_state *crtc_state; | |
5e743737 | 1604 | int i, ret = 0; |
cc4ceb48 | 1605 | |
17a38d9c | 1606 | DRM_DEBUG_ATOMIC("checking %p\n", state); |
cc4ceb48 | 1607 | |
5721a380 | 1608 | for_each_new_plane_in_state(state, plane, plane_state, i) { |
df63b999 | 1609 | ret = drm_atomic_plane_check(plane, plane_state); |
5e743737 | 1610 | if (ret) { |
9f4c97a2 VS |
1611 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", |
1612 | plane->base.id, plane->name); | |
5e743737 RC |
1613 | return ret; |
1614 | } | |
1615 | } | |
1616 | ||
5721a380 | 1617 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
df63b999 | 1618 | ret = drm_atomic_crtc_check(crtc, crtc_state); |
5e743737 | 1619 | if (ret) { |
fa3ab4c2 VS |
1620 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n", |
1621 | crtc->base.id, crtc->name); | |
5e743737 RC |
1622 | return ret; |
1623 | } | |
1624 | } | |
1625 | ||
cc4ceb48 | 1626 | if (config->funcs->atomic_check) |
5e743737 RC |
1627 | ret = config->funcs->atomic_check(state->dev, state); |
1628 | ||
a0ffc51e ML |
1629 | if (ret) |
1630 | return ret; | |
1631 | ||
d34f20d6 | 1632 | if (!state->allow_modeset) { |
5721a380 | 1633 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
2465ff62 | 1634 | if (drm_atomic_crtc_needs_modeset(crtc_state)) { |
fa3ab4c2 VS |
1635 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n", |
1636 | crtc->base.id, crtc->name); | |
d34f20d6 RC |
1637 | return -EINVAL; |
1638 | } | |
1639 | } | |
1640 | } | |
1641 | ||
a0ffc51e | 1642 | return 0; |
cc4ceb48 DV |
1643 | } |
1644 | EXPORT_SYMBOL(drm_atomic_check_only); | |
1645 | ||
1646 | /** | |
1647 | * drm_atomic_commit - commit configuration atomically | |
1648 | * @state: atomic configuration to check | |
1649 | * | |
1650 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1651 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1652 | * backoff dance and restart. All other errors are fatal. | |
1653 | * | |
76fede2f ML |
1654 | * This function will take its own reference on @state. |
1655 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1656 | * |
1657 | * Returns: | |
1658 | * 0 on success, negative error code on failure. | |
1659 | */ | |
1660 | int drm_atomic_commit(struct drm_atomic_state *state) | |
1661 | { | |
1662 | struct drm_mode_config *config = &state->dev->mode_config; | |
1663 | int ret; | |
1664 | ||
1665 | ret = drm_atomic_check_only(state); | |
1666 | if (ret) | |
1667 | return ret; | |
1668 | ||
a0752d4a | 1669 | DRM_DEBUG_ATOMIC("committing %p\n", state); |
cc4ceb48 DV |
1670 | |
1671 | return config->funcs->atomic_commit(state->dev, state, false); | |
1672 | } | |
1673 | EXPORT_SYMBOL(drm_atomic_commit); | |
1674 | ||
1675 | /** | |
d574528a | 1676 | * drm_atomic_nonblocking_commit - atomic nonblocking commit |
cc4ceb48 DV |
1677 | * @state: atomic configuration to check |
1678 | * | |
1679 | * Note that this function can return -EDEADLK if the driver needed to acquire | |
1680 | * more locks but encountered a deadlock. The caller must then do the usual w/w | |
1681 | * backoff dance and restart. All other errors are fatal. | |
1682 | * | |
76fede2f ML |
1683 | * This function will take its own reference on @state. |
1684 | * Callers should always release their reference with drm_atomic_state_put(). | |
cc4ceb48 DV |
1685 | * |
1686 | * Returns: | |
1687 | * 0 on success, negative error code on failure. | |
1688 | */ | |
b837ba0a | 1689 | int drm_atomic_nonblocking_commit(struct drm_atomic_state *state) |
cc4ceb48 DV |
1690 | { |
1691 | struct drm_mode_config *config = &state->dev->mode_config; | |
1692 | int ret; | |
1693 | ||
1694 | ret = drm_atomic_check_only(state); | |
1695 | if (ret) | |
1696 | return ret; | |
1697 | ||
a0752d4a | 1698 | DRM_DEBUG_ATOMIC("committing %p nonblocking\n", state); |
cc4ceb48 DV |
1699 | |
1700 | return config->funcs->atomic_commit(state->dev, state, true); | |
1701 | } | |
b837ba0a | 1702 | EXPORT_SYMBOL(drm_atomic_nonblocking_commit); |
d34f20d6 | 1703 | |
fceffb32 RC |
1704 | static void drm_atomic_print_state(const struct drm_atomic_state *state) |
1705 | { | |
1706 | struct drm_printer p = drm_info_printer(state->dev->dev); | |
1707 | struct drm_plane *plane; | |
1708 | struct drm_plane_state *plane_state; | |
1709 | struct drm_crtc *crtc; | |
1710 | struct drm_crtc_state *crtc_state; | |
1711 | struct drm_connector *connector; | |
1712 | struct drm_connector_state *connector_state; | |
1713 | int i; | |
1714 | ||
1715 | DRM_DEBUG_ATOMIC("checking %p\n", state); | |
1716 | ||
5721a380 | 1717 | for_each_new_plane_in_state(state, plane, plane_state, i) |
fceffb32 RC |
1718 | drm_atomic_plane_print_state(&p, plane_state); |
1719 | ||
5721a380 | 1720 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) |
fceffb32 RC |
1721 | drm_atomic_crtc_print_state(&p, crtc_state); |
1722 | ||
5721a380 | 1723 | for_each_new_connector_in_state(state, connector, connector_state, i) |
fceffb32 RC |
1724 | drm_atomic_connector_print_state(&p, connector_state); |
1725 | } | |
1726 | ||
c2d85564 DV |
1727 | static void __drm_state_dump(struct drm_device *dev, struct drm_printer *p, |
1728 | bool take_locks) | |
6559c901 RC |
1729 | { |
1730 | struct drm_mode_config *config = &dev->mode_config; | |
1731 | struct drm_plane *plane; | |
1732 | struct drm_crtc *crtc; | |
1733 | struct drm_connector *connector; | |
613051da | 1734 | struct drm_connector_list_iter conn_iter; |
6559c901 RC |
1735 | |
1736 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
1737 | return; | |
1738 | ||
c2d85564 DV |
1739 | list_for_each_entry(plane, &config->plane_list, head) { |
1740 | if (take_locks) | |
1741 | drm_modeset_lock(&plane->mutex, NULL); | |
6559c901 | 1742 | drm_atomic_plane_print_state(p, plane->state); |
c2d85564 DV |
1743 | if (take_locks) |
1744 | drm_modeset_unlock(&plane->mutex); | |
1745 | } | |
6559c901 | 1746 | |
c2d85564 DV |
1747 | list_for_each_entry(crtc, &config->crtc_list, head) { |
1748 | if (take_locks) | |
1749 | drm_modeset_lock(&crtc->mutex, NULL); | |
6559c901 | 1750 | drm_atomic_crtc_print_state(p, crtc->state); |
c2d85564 DV |
1751 | if (take_locks) |
1752 | drm_modeset_unlock(&crtc->mutex); | |
1753 | } | |
6559c901 | 1754 | |
b982dab1 | 1755 | drm_connector_list_iter_begin(dev, &conn_iter); |
c2d85564 DV |
1756 | if (take_locks) |
1757 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); | |
613051da | 1758 | drm_for_each_connector_iter(connector, &conn_iter) |
6559c901 | 1759 | drm_atomic_connector_print_state(p, connector->state); |
c2d85564 DV |
1760 | if (take_locks) |
1761 | drm_modeset_unlock(&dev->mode_config.connection_mutex); | |
b982dab1 | 1762 | drm_connector_list_iter_end(&conn_iter); |
6559c901 | 1763 | } |
c2d85564 DV |
1764 | |
1765 | /** | |
1766 | * drm_state_dump - dump entire device atomic state | |
1767 | * @dev: the drm device | |
1768 | * @p: where to print the state to | |
1769 | * | |
1770 | * Just for debugging. Drivers might want an option to dump state | |
1771 | * to dmesg in case of error irq's. (Hint, you probably want to | |
1772 | * ratelimit this!) | |
1773 | * | |
1774 | * The caller must drm_modeset_lock_all(), or if this is called | |
1775 | * from error irq handler, it should not be enabled by default. | |
1776 | * (Ie. if you are debugging errors you might not care that this | |
1777 | * is racey. But calling this without all modeset locks held is | |
1778 | * not inherently safe.) | |
1779 | */ | |
1780 | void drm_state_dump(struct drm_device *dev, struct drm_printer *p) | |
1781 | { | |
1782 | __drm_state_dump(dev, p, false); | |
1783 | } | |
6559c901 RC |
1784 | EXPORT_SYMBOL(drm_state_dump); |
1785 | ||
1786 | #ifdef CONFIG_DEBUG_FS | |
1787 | static int drm_state_info(struct seq_file *m, void *data) | |
1788 | { | |
1789 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
1790 | struct drm_device *dev = node->minor->dev; | |
1791 | struct drm_printer p = drm_seq_file_printer(m); | |
1792 | ||
c2d85564 | 1793 | __drm_state_dump(dev, &p, true); |
6559c901 RC |
1794 | |
1795 | return 0; | |
1796 | } | |
1797 | ||
1798 | /* any use in debugfs files to dump individual planes/crtc/etc? */ | |
1799 | static const struct drm_info_list drm_atomic_debugfs_list[] = { | |
1800 | {"state", drm_state_info, 0}, | |
1801 | }; | |
1802 | ||
1803 | int drm_atomic_debugfs_init(struct drm_minor *minor) | |
1804 | { | |
1805 | return drm_debugfs_create_files(drm_atomic_debugfs_list, | |
1806 | ARRAY_SIZE(drm_atomic_debugfs_list), | |
1807 | minor->debugfs_root, minor); | |
1808 | } | |
1809 | #endif | |
1810 | ||
d34f20d6 | 1811 | /* |
21be9154 | 1812 | * The big monster ioctl |
d34f20d6 RC |
1813 | */ |
1814 | ||
1815 | static struct drm_pending_vblank_event *create_vblank_event( | |
beaf5af4 | 1816 | struct drm_device *dev, uint64_t user_data) |
d34f20d6 RC |
1817 | { |
1818 | struct drm_pending_vblank_event *e = NULL; | |
d34f20d6 RC |
1819 | |
1820 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
2dd500f1 DV |
1821 | if (!e) |
1822 | return NULL; | |
d34f20d6 RC |
1823 | |
1824 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
2dd500f1 | 1825 | e->event.base.length = sizeof(e->event); |
d34f20d6 | 1826 | e->event.user_data = user_data; |
d34f20d6 | 1827 | |
2dd500f1 | 1828 | return e; |
d34f20d6 RC |
1829 | } |
1830 | ||
144a7999 DV |
1831 | int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state, |
1832 | struct drm_connector *connector, | |
1833 | int mode) | |
1834 | { | |
1835 | struct drm_connector *tmp_connector; | |
1836 | struct drm_connector_state *new_conn_state; | |
1837 | struct drm_crtc *crtc; | |
1838 | struct drm_crtc_state *crtc_state; | |
1839 | int i, ret, old_mode = connector->dpms; | |
1840 | bool active = false; | |
1841 | ||
1842 | ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex, | |
1843 | state->acquire_ctx); | |
1844 | if (ret) | |
1845 | return ret; | |
1846 | ||
1847 | if (mode != DRM_MODE_DPMS_ON) | |
1848 | mode = DRM_MODE_DPMS_OFF; | |
1849 | connector->dpms = mode; | |
1850 | ||
1851 | crtc = connector->state->crtc; | |
1852 | if (!crtc) | |
1853 | goto out; | |
1854 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
1855 | if (ret) | |
1856 | goto out; | |
1857 | ||
1858 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1859 | if (IS_ERR(crtc_state)) { | |
1860 | ret = PTR_ERR(crtc_state); | |
1861 | goto out; | |
1862 | } | |
1863 | ||
1864 | for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) { | |
1865 | if (new_conn_state->crtc != crtc) | |
1866 | continue; | |
1867 | if (tmp_connector->dpms == DRM_MODE_DPMS_ON) { | |
1868 | active = true; | |
1869 | break; | |
1870 | } | |
1871 | } | |
1872 | ||
1873 | crtc_state->active = active; | |
1874 | ret = drm_atomic_commit(state); | |
1875 | out: | |
1876 | if (ret != 0) | |
1877 | connector->dpms = old_mode; | |
1878 | return ret; | |
1879 | } | |
1880 | ||
1881 | int drm_atomic_set_property(struct drm_atomic_state *state, | |
1882 | struct drm_mode_object *obj, | |
1883 | struct drm_property *prop, | |
1884 | uint64_t prop_value) | |
d34f20d6 RC |
1885 | { |
1886 | struct drm_mode_object *ref; | |
1887 | int ret; | |
1888 | ||
1889 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
1890 | return -EINVAL; | |
1891 | ||
1892 | switch (obj->type) { | |
1893 | case DRM_MODE_OBJECT_CONNECTOR: { | |
1894 | struct drm_connector *connector = obj_to_connector(obj); | |
1895 | struct drm_connector_state *connector_state; | |
1896 | ||
1897 | connector_state = drm_atomic_get_connector_state(state, connector); | |
1898 | if (IS_ERR(connector_state)) { | |
1899 | ret = PTR_ERR(connector_state); | |
1900 | break; | |
1901 | } | |
1902 | ||
1903 | ret = drm_atomic_connector_set_property(connector, | |
1904 | connector_state, prop, prop_value); | |
1905 | break; | |
1906 | } | |
1907 | case DRM_MODE_OBJECT_CRTC: { | |
1908 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
1909 | struct drm_crtc_state *crtc_state; | |
1910 | ||
1911 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
1912 | if (IS_ERR(crtc_state)) { | |
1913 | ret = PTR_ERR(crtc_state); | |
1914 | break; | |
1915 | } | |
1916 | ||
1917 | ret = drm_atomic_crtc_set_property(crtc, | |
1918 | crtc_state, prop, prop_value); | |
1919 | break; | |
1920 | } | |
1921 | case DRM_MODE_OBJECT_PLANE: { | |
1922 | struct drm_plane *plane = obj_to_plane(obj); | |
1923 | struct drm_plane_state *plane_state; | |
1924 | ||
1925 | plane_state = drm_atomic_get_plane_state(state, plane); | |
1926 | if (IS_ERR(plane_state)) { | |
1927 | ret = PTR_ERR(plane_state); | |
1928 | break; | |
1929 | } | |
1930 | ||
1931 | ret = drm_atomic_plane_set_property(plane, | |
1932 | plane_state, prop, prop_value); | |
1933 | break; | |
1934 | } | |
1935 | default: | |
1936 | ret = -EINVAL; | |
1937 | break; | |
1938 | } | |
1939 | ||
1940 | drm_property_change_valid_put(prop, ref); | |
1941 | return ret; | |
1942 | } | |
1943 | ||
0f45c26f | 1944 | /** |
9744bf41 | 1945 | * drm_atomic_clean_old_fb -- Unset old_fb pointers and set plane->fb pointers. |
0f45c26f ML |
1946 | * |
1947 | * @dev: drm device to check. | |
1948 | * @plane_mask: plane mask for planes that were updated. | |
1949 | * @ret: return value, can be -EDEADLK for a retry. | |
1950 | * | |
d574528a DV |
1951 | * Before doing an update &drm_plane.old_fb is set to &drm_plane.fb, but before |
1952 | * dropping the locks old_fb needs to be set to NULL and plane->fb updated. This | |
1953 | * is a common operation for each atomic update, so this call is split off as a | |
1954 | * helper. | |
0f45c26f ML |
1955 | */ |
1956 | void drm_atomic_clean_old_fb(struct drm_device *dev, | |
1957 | unsigned plane_mask, | |
1958 | int ret) | |
1959 | { | |
1960 | struct drm_plane *plane; | |
1961 | ||
1962 | /* if succeeded, fixup legacy plane crtc/fb ptrs before dropping | |
1963 | * locks (ie. while it is still safe to deref plane->state). We | |
1964 | * need to do this here because the driver entry points cannot | |
1965 | * distinguish between legacy and atomic ioctls. | |
1966 | */ | |
1967 | drm_for_each_plane_mask(plane, dev, plane_mask) { | |
1968 | if (ret == 0) { | |
1969 | struct drm_framebuffer *new_fb = plane->state->fb; | |
1970 | if (new_fb) | |
a4a69da0 | 1971 | drm_framebuffer_get(new_fb); |
0f45c26f ML |
1972 | plane->fb = new_fb; |
1973 | plane->crtc = plane->state->crtc; | |
1974 | ||
1975 | if (plane->old_fb) | |
a4a69da0 | 1976 | drm_framebuffer_put(plane->old_fb); |
0f45c26f ML |
1977 | } |
1978 | plane->old_fb = NULL; | |
1979 | } | |
1980 | } | |
1981 | EXPORT_SYMBOL(drm_atomic_clean_old_fb); | |
1982 | ||
9a83a71a GP |
1983 | /** |
1984 | * DOC: explicit fencing properties | |
1985 | * | |
1986 | * Explicit fencing allows userspace to control the buffer synchronization | |
1987 | * between devices. A Fence or a group of fences are transfered to/from | |
1988 | * userspace using Sync File fds and there are two DRM properties for that. | |
1989 | * IN_FENCE_FD on each DRM Plane to send fences to the kernel and | |
1990 | * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel. | |
1991 | * | |
1992 | * As a contrast, with implicit fencing the kernel keeps track of any | |
1993 | * ongoing rendering, and automatically ensures that the atomic update waits | |
1994 | * for any pending rendering to complete. For shared buffers represented with | |
d574528a | 1995 | * a &struct dma_buf this is tracked in &struct reservation_object. |
9a83a71a GP |
1996 | * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org), |
1997 | * whereas explicit fencing is what Android wants. | |
1998 | * | |
1999 | * "IN_FENCE_FD”: | |
2000 | * Use this property to pass a fence that DRM should wait on before | |
2001 | * proceeding with the Atomic Commit request and show the framebuffer for | |
2002 | * the plane on the screen. The fence can be either a normal fence or a | |
2003 | * merged one, the sync_file framework will handle both cases and use a | |
2004 | * fence_array if a merged fence is received. Passing -1 here means no | |
2005 | * fences to wait on. | |
2006 | * | |
2007 | * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag | |
2008 | * it will only check if the Sync File is a valid one. | |
2009 | * | |
2010 | * On the driver side the fence is stored on the @fence parameter of | |
ea0dd85a | 2011 | * &struct drm_plane_state. Drivers which also support implicit fencing |
9a83a71a GP |
2012 | * should set the implicit fence using drm_atomic_set_fence_for_plane(), |
2013 | * to make sure there's consistent behaviour between drivers in precedence | |
2014 | * of implicit vs. explicit fencing. | |
2015 | * | |
2016 | * "OUT_FENCE_PTR”: | |
2017 | * Use this property to pass a file descriptor pointer to DRM. Once the | |
2018 | * Atomic Commit request call returns OUT_FENCE_PTR will be filled with | |
2019 | * the file descriptor number of a Sync File. This Sync File contains the | |
2020 | * CRTC fence that will be signaled when all framebuffers present on the | |
2021 | * Atomic Commit * request for that given CRTC are scanned out on the | |
2022 | * screen. | |
2023 | * | |
2024 | * The Atomic Commit request fails if a invalid pointer is passed. If the | |
2025 | * Atomic Commit request fails for any other reason the out fence fd | |
2026 | * returned will be -1. On a Atomic Commit with the | |
2027 | * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1. | |
2028 | * | |
2029 | * Note that out-fences don't have a special interface to drivers and are | |
ea0dd85a | 2030 | * internally represented by a &struct drm_pending_vblank_event in struct |
9a83a71a GP |
2031 | * &drm_crtc_state, which is also used by the nonblocking atomic commit |
2032 | * helpers and for the DRM event handling for existing userspace. | |
2033 | */ | |
2034 | ||
beaf5af4 | 2035 | struct drm_out_fence_state { |
7e9081c5 | 2036 | s32 __user *out_fence_ptr; |
beaf5af4 GP |
2037 | struct sync_file *sync_file; |
2038 | int fd; | |
2039 | }; | |
2040 | ||
2041 | static int setup_out_fence(struct drm_out_fence_state *fence_state, | |
2042 | struct dma_fence *fence) | |
2043 | { | |
2044 | fence_state->fd = get_unused_fd_flags(O_CLOEXEC); | |
2045 | if (fence_state->fd < 0) | |
2046 | return fence_state->fd; | |
2047 | ||
2048 | if (put_user(fence_state->fd, fence_state->out_fence_ptr)) | |
2049 | return -EFAULT; | |
2050 | ||
2051 | fence_state->sync_file = sync_file_create(fence); | |
2052 | if (!fence_state->sync_file) | |
2053 | return -ENOMEM; | |
2054 | ||
2055 | return 0; | |
2056 | } | |
2057 | ||
2058 | static int prepare_crtc_signaling(struct drm_device *dev, | |
2059 | struct drm_atomic_state *state, | |
2060 | struct drm_mode_atomic *arg, | |
2061 | struct drm_file *file_priv, | |
2062 | struct drm_out_fence_state **fence_state, | |
2063 | unsigned int *num_fences) | |
2064 | { | |
2065 | struct drm_crtc *crtc; | |
2066 | struct drm_crtc_state *crtc_state; | |
330c422a | 2067 | int i, c = 0, ret; |
beaf5af4 GP |
2068 | |
2069 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) | |
2070 | return 0; | |
2071 | ||
5721a380 | 2072 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
7e9081c5 | 2073 | s32 __user *fence_ptr; |
beaf5af4 GP |
2074 | |
2075 | fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc); | |
2076 | ||
2077 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) { | |
2078 | struct drm_pending_vblank_event *e; | |
2079 | ||
2080 | e = create_vblank_event(dev, arg->user_data); | |
2081 | if (!e) | |
2082 | return -ENOMEM; | |
2083 | ||
2084 | crtc_state->event = e; | |
2085 | } | |
2086 | ||
2087 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
2088 | struct drm_pending_vblank_event *e = crtc_state->event; | |
2089 | ||
2090 | if (!file_priv) | |
2091 | continue; | |
2092 | ||
2093 | ret = drm_event_reserve_init(dev, file_priv, &e->base, | |
2094 | &e->event.base); | |
2095 | if (ret) { | |
2096 | kfree(e); | |
2097 | crtc_state->event = NULL; | |
2098 | return ret; | |
2099 | } | |
2100 | } | |
2101 | ||
2102 | if (fence_ptr) { | |
2103 | struct dma_fence *fence; | |
2104 | struct drm_out_fence_state *f; | |
2105 | ||
2106 | f = krealloc(*fence_state, sizeof(**fence_state) * | |
2107 | (*num_fences + 1), GFP_KERNEL); | |
2108 | if (!f) | |
2109 | return -ENOMEM; | |
2110 | ||
2111 | memset(&f[*num_fences], 0, sizeof(*f)); | |
2112 | ||
2113 | f[*num_fences].out_fence_ptr = fence_ptr; | |
2114 | *fence_state = f; | |
2115 | ||
35f8cc3b | 2116 | fence = drm_crtc_create_fence(crtc); |
beaf5af4 GP |
2117 | if (!fence) |
2118 | return -ENOMEM; | |
2119 | ||
2120 | ret = setup_out_fence(&f[(*num_fences)++], fence); | |
2121 | if (ret) { | |
2122 | dma_fence_put(fence); | |
2123 | return ret; | |
2124 | } | |
2125 | ||
2126 | crtc_state->event->base.fence = fence; | |
2127 | } | |
330c422a AG |
2128 | |
2129 | c++; | |
beaf5af4 GP |
2130 | } |
2131 | ||
330c422a AG |
2132 | /* |
2133 | * Having this flag means user mode pends on event which will never | |
2134 | * reach due to lack of at least one CRTC for signaling | |
2135 | */ | |
2136 | if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
2137 | return -EINVAL; | |
2138 | ||
beaf5af4 GP |
2139 | return 0; |
2140 | } | |
2141 | ||
2142 | static void complete_crtc_signaling(struct drm_device *dev, | |
2143 | struct drm_atomic_state *state, | |
2144 | struct drm_out_fence_state *fence_state, | |
2145 | unsigned int num_fences, | |
2146 | bool install_fds) | |
2147 | { | |
2148 | struct drm_crtc *crtc; | |
2149 | struct drm_crtc_state *crtc_state; | |
2150 | int i; | |
2151 | ||
2152 | if (install_fds) { | |
2153 | for (i = 0; i < num_fences; i++) | |
2154 | fd_install(fence_state[i].fd, | |
2155 | fence_state[i].sync_file->file); | |
2156 | ||
2157 | kfree(fence_state); | |
2158 | return; | |
2159 | } | |
2160 | ||
5721a380 | 2161 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { |
92c715fc | 2162 | struct drm_pending_vblank_event *event = crtc_state->event; |
beaf5af4 | 2163 | /* |
92c715fc ML |
2164 | * Free the allocated event. drm_atomic_helper_setup_commit |
2165 | * can allocate an event too, so only free it if it's ours | |
2166 | * to prevent a double free in drm_atomic_state_clear. | |
beaf5af4 | 2167 | */ |
92c715fc ML |
2168 | if (event && (event->base.fence || event->base.file_priv)) { |
2169 | drm_event_cancel_free(dev, &event->base); | |
2170 | crtc_state->event = NULL; | |
2171 | } | |
beaf5af4 GP |
2172 | } |
2173 | ||
2174 | if (!fence_state) | |
2175 | return; | |
2176 | ||
2177 | for (i = 0; i < num_fences; i++) { | |
2178 | if (fence_state[i].sync_file) | |
2179 | fput(fence_state[i].sync_file->file); | |
2180 | if (fence_state[i].fd >= 0) | |
2181 | put_unused_fd(fence_state[i].fd); | |
2182 | ||
2183 | /* If this fails log error to the user */ | |
2184 | if (fence_state[i].out_fence_ptr && | |
2185 | put_user(-1, fence_state[i].out_fence_ptr)) | |
2186 | DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n"); | |
2187 | } | |
2188 | ||
2189 | kfree(fence_state); | |
2190 | } | |
2191 | ||
d34f20d6 RC |
2192 | int drm_mode_atomic_ioctl(struct drm_device *dev, |
2193 | void *data, struct drm_file *file_priv) | |
2194 | { | |
2195 | struct drm_mode_atomic *arg = data; | |
2196 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
2197 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
2198 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
2199 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
2200 | unsigned int copied_objs, copied_props; | |
2201 | struct drm_atomic_state *state; | |
2202 | struct drm_modeset_acquire_ctx ctx; | |
2203 | struct drm_plane *plane; | |
7f5d6dac | 2204 | struct drm_out_fence_state *fence_state; |
45723728 | 2205 | unsigned plane_mask; |
d34f20d6 | 2206 | int ret = 0; |
7f5d6dac | 2207 | unsigned int i, j, num_fences; |
d34f20d6 RC |
2208 | |
2209 | /* disallow for drivers not supporting atomic: */ | |
2210 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
2211 | return -EINVAL; | |
2212 | ||
2213 | /* disallow for userspace that has not enabled atomic cap (even | |
2214 | * though this may be a bit overkill, since legacy userspace | |
2215 | * wouldn't know how to call this ioctl) | |
2216 | */ | |
2217 | if (!file_priv->atomic) | |
2218 | return -EINVAL; | |
2219 | ||
2220 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
2221 | return -EINVAL; | |
2222 | ||
2223 | if (arg->reserved) | |
2224 | return -EINVAL; | |
2225 | ||
2226 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
2227 | !dev->mode_config.async_page_flip) | |
2228 | return -EINVAL; | |
2229 | ||
2230 | /* can't test and expect an event at the same time. */ | |
2231 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
2232 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
2233 | return -EINVAL; | |
2234 | ||
dad56ce4 | 2235 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); |
d34f20d6 RC |
2236 | |
2237 | state = drm_atomic_state_alloc(dev); | |
2238 | if (!state) | |
2239 | return -ENOMEM; | |
2240 | ||
2241 | state->acquire_ctx = &ctx; | |
2242 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
2243 | ||
2244 | retry: | |
45723728 | 2245 | plane_mask = 0; |
d34f20d6 RC |
2246 | copied_objs = 0; |
2247 | copied_props = 0; | |
7f5d6dac ML |
2248 | fence_state = NULL; |
2249 | num_fences = 0; | |
d34f20d6 RC |
2250 | |
2251 | for (i = 0; i < arg->count_objs; i++) { | |
2252 | uint32_t obj_id, count_props; | |
2253 | struct drm_mode_object *obj; | |
2254 | ||
2255 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
2256 | ret = -EFAULT; | |
ec9f932e | 2257 | goto out; |
d34f20d6 RC |
2258 | } |
2259 | ||
2260 | obj = drm_mode_object_find(dev, obj_id, DRM_MODE_OBJECT_ANY); | |
b164d31f DA |
2261 | if (!obj) { |
2262 | ret = -ENOENT; | |
2263 | goto out; | |
2264 | } | |
2265 | ||
2266 | if (!obj->properties) { | |
020a218f | 2267 | drm_mode_object_put(obj); |
d34f20d6 | 2268 | ret = -ENOENT; |
ec9f932e | 2269 | goto out; |
d34f20d6 RC |
2270 | } |
2271 | ||
d34f20d6 | 2272 | if (get_user(count_props, count_props_ptr + copied_objs)) { |
020a218f | 2273 | drm_mode_object_put(obj); |
d34f20d6 | 2274 | ret = -EFAULT; |
ec9f932e | 2275 | goto out; |
d34f20d6 RC |
2276 | } |
2277 | ||
2278 | copied_objs++; | |
2279 | ||
2280 | for (j = 0; j < count_props; j++) { | |
2281 | uint32_t prop_id; | |
2282 | uint64_t prop_value; | |
2283 | struct drm_property *prop; | |
2284 | ||
2285 | if (get_user(prop_id, props_ptr + copied_props)) { | |
020a218f | 2286 | drm_mode_object_put(obj); |
d34f20d6 | 2287 | ret = -EFAULT; |
ec9f932e | 2288 | goto out; |
d34f20d6 RC |
2289 | } |
2290 | ||
f92f053b | 2291 | prop = drm_mode_obj_find_prop_id(obj, prop_id); |
d34f20d6 | 2292 | if (!prop) { |
020a218f | 2293 | drm_mode_object_put(obj); |
d34f20d6 | 2294 | ret = -ENOENT; |
ec9f932e | 2295 | goto out; |
d34f20d6 RC |
2296 | } |
2297 | ||
42c5814c GR |
2298 | if (copy_from_user(&prop_value, |
2299 | prop_values_ptr + copied_props, | |
2300 | sizeof(prop_value))) { | |
020a218f | 2301 | drm_mode_object_put(obj); |
d34f20d6 | 2302 | ret = -EFAULT; |
ec9f932e | 2303 | goto out; |
d34f20d6 RC |
2304 | } |
2305 | ||
144a7999 DV |
2306 | ret = drm_atomic_set_property(state, obj, prop, |
2307 | prop_value); | |
b164d31f | 2308 | if (ret) { |
020a218f | 2309 | drm_mode_object_put(obj); |
ec9f932e | 2310 | goto out; |
b164d31f | 2311 | } |
d34f20d6 RC |
2312 | |
2313 | copied_props++; | |
2314 | } | |
a9cc54ee | 2315 | |
c4749c9a ML |
2316 | if (obj->type == DRM_MODE_OBJECT_PLANE && count_props && |
2317 | !(arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)) { | |
a9cc54ee ML |
2318 | plane = obj_to_plane(obj); |
2319 | plane_mask |= (1 << drm_plane_index(plane)); | |
2320 | plane->old_fb = plane->fb; | |
2321 | } | |
020a218f | 2322 | drm_mode_object_put(obj); |
d34f20d6 RC |
2323 | } |
2324 | ||
beaf5af4 GP |
2325 | ret = prepare_crtc_signaling(dev, state, arg, file_priv, &fence_state, |
2326 | &num_fences); | |
2327 | if (ret) | |
2328 | goto out; | |
d34f20d6 RC |
2329 | |
2330 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
2331 | ret = drm_atomic_check_only(state); | |
d34f20d6 | 2332 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { |
b837ba0a | 2333 | ret = drm_atomic_nonblocking_commit(state); |
d34f20d6 | 2334 | } else { |
fceffb32 RC |
2335 | if (unlikely(drm_debug & DRM_UT_STATE)) |
2336 | drm_atomic_print_state(state); | |
2337 | ||
d34f20d6 RC |
2338 | ret = drm_atomic_commit(state); |
2339 | } | |
2340 | ||
ec9f932e | 2341 | out: |
0f45c26f | 2342 | drm_atomic_clean_old_fb(dev, plane_mask, ret); |
d34f20d6 | 2343 | |
beaf5af4 | 2344 | complete_crtc_signaling(dev, state, fence_state, num_fences, !ret); |
c4749c9a | 2345 | |
ec9f932e ML |
2346 | if (ret == -EDEADLK) { |
2347 | drm_atomic_state_clear(state); | |
dad56ce4 ML |
2348 | ret = drm_modeset_backoff(&ctx); |
2349 | if (!ret) | |
2350 | goto retry; | |
ec9f932e | 2351 | } |
d34f20d6 | 2352 | |
0853695c | 2353 | drm_atomic_state_put(state); |
d34f20d6 RC |
2354 | |
2355 | drm_modeset_drop_locks(&ctx); | |
2356 | drm_modeset_acquire_fini(&ctx); | |
2357 | ||
2358 | return ret; | |
d34f20d6 | 2359 | } |