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1 | /* |
2 | * Copyright (C) 2014 Red Hat | |
3 | * Copyright (C) 2014 Intel Corp. | |
4 | * Copyright (C) 2018 Intel Corp. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the "Software"), | |
8 | * to deal in the Software without restriction, including without limitation | |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
10 | * and/or sell copies of the Software, and to permit persons to whom the | |
11 | * Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
22 | * OTHER DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Authors: | |
25 | * Rob Clark <robdclark@gmail.com> | |
26 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
27 | */ | |
28 | ||
29 | #include <drm/drm_atomic_uapi.h> | |
30 | #include <drm/drm_atomic.h> | |
31 | #include <drm/drm_print.h> | |
32 | #include <drm/drm_drv.h> | |
33 | #include <drm/drm_writeback.h> | |
34 | #include <drm/drm_vblank.h> | |
35 | ||
36 | #include <linux/dma-fence.h> | |
37 | #include <linux/uaccess.h> | |
38 | #include <linux/sync_file.h> | |
39 | #include <linux/file.h> | |
40 | ||
41 | #include "drm_crtc_internal.h" | |
42 | ||
43 | /** | |
44 | * DOC: overview | |
45 | * | |
46 | * This file contains the marshalling and demarshalling glue for the atomic UAPI | |
47 | * in all it's form: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and | |
48 | * SET_PROPERTY IOCTls. Plus interface functions for compatibility helpers and | |
49 | * drivers which have special needs to construct their own atomic updates, e.g. | |
50 | * for load detect or similiar. | |
51 | */ | |
52 | ||
53 | /** | |
54 | * drm_atomic_set_mode_for_crtc - set mode for CRTC | |
55 | * @state: the CRTC whose incoming state to update | |
56 | * @mode: kernel-internal mode to use for the CRTC, or NULL to disable | |
57 | * | |
58 | * Set a mode (originating from the kernel) on the desired CRTC state and update | |
59 | * the enable property. | |
60 | * | |
61 | * RETURNS: | |
62 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
63 | */ | |
64 | int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, | |
65 | const struct drm_display_mode *mode) | |
66 | { | |
67 | struct drm_crtc *crtc = state->crtc; | |
68 | struct drm_mode_modeinfo umode; | |
69 | ||
70 | /* Early return for no change. */ | |
71 | if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) | |
72 | return 0; | |
73 | ||
74 | drm_property_blob_put(state->mode_blob); | |
75 | state->mode_blob = NULL; | |
76 | ||
77 | if (mode) { | |
78 | drm_mode_convert_to_umode(&umode, mode); | |
79 | state->mode_blob = | |
80 | drm_property_create_blob(state->crtc->dev, | |
81 | sizeof(umode), | |
82 | &umode); | |
83 | if (IS_ERR(state->mode_blob)) | |
84 | return PTR_ERR(state->mode_blob); | |
85 | ||
86 | drm_mode_copy(&state->mode, mode); | |
87 | state->enable = true; | |
88 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n", | |
89 | mode->name, crtc->base.id, crtc->name, state); | |
90 | } else { | |
91 | memset(&state->mode, 0, sizeof(state->mode)); | |
92 | state->enable = false; | |
93 | DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n", | |
94 | crtc->base.id, crtc->name, state); | |
95 | } | |
96 | ||
97 | return 0; | |
98 | } | |
99 | EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); | |
100 | ||
101 | /** | |
102 | * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC | |
103 | * @state: the CRTC whose incoming state to update | |
104 | * @blob: pointer to blob property to use for mode | |
105 | * | |
106 | * Set a mode (originating from a blob property) on the desired CRTC state. | |
107 | * This function will take a reference on the blob property for the CRTC state, | |
108 | * and release the reference held on the state's existing mode property, if any | |
109 | * was set. | |
110 | * | |
111 | * RETURNS: | |
112 | * Zero on success, error code on failure. Cannot return -EDEADLK. | |
113 | */ | |
114 | int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, | |
115 | struct drm_property_blob *blob) | |
116 | { | |
117 | struct drm_crtc *crtc = state->crtc; | |
118 | ||
119 | if (blob == state->mode_blob) | |
120 | return 0; | |
121 | ||
122 | drm_property_blob_put(state->mode_blob); | |
123 | state->mode_blob = NULL; | |
124 | ||
125 | memset(&state->mode, 0, sizeof(state->mode)); | |
126 | ||
127 | if (blob) { | |
128 | int ret; | |
129 | ||
130 | if (blob->length != sizeof(struct drm_mode_modeinfo)) { | |
131 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n", | |
132 | crtc->base.id, crtc->name, | |
133 | blob->length); | |
134 | return -EINVAL; | |
135 | } | |
136 | ||
137 | ret = drm_mode_convert_umode(crtc->dev, | |
138 | &state->mode, blob->data); | |
139 | if (ret) { | |
140 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n", | |
141 | crtc->base.id, crtc->name, | |
142 | ret, drm_get_mode_status_name(state->mode.status)); | |
143 | drm_mode_debug_printmodeline(&state->mode); | |
144 | return -EINVAL; | |
145 | } | |
146 | ||
147 | state->mode_blob = drm_property_blob_get(blob); | |
148 | state->enable = true; | |
149 | DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n", | |
150 | state->mode.name, crtc->base.id, crtc->name, | |
151 | state); | |
152 | } else { | |
153 | state->enable = false; | |
154 | DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n", | |
155 | crtc->base.id, crtc->name, state); | |
156 | } | |
157 | ||
158 | return 0; | |
159 | } | |
160 | EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); | |
161 | ||
162 | /** | |
163 | * drm_atomic_set_crtc_for_plane - set crtc for plane | |
164 | * @plane_state: the plane whose incoming state to update | |
165 | * @crtc: crtc to use for the plane | |
166 | * | |
167 | * Changing the assigned crtc for a plane requires us to grab the lock and state | |
168 | * for the new crtc, as needed. This function takes care of all these details | |
169 | * besides updating the pointer in the state object itself. | |
170 | * | |
171 | * Returns: | |
172 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
173 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
174 | * sequence must be restarted. All other errors are fatal. | |
175 | */ | |
176 | int | |
177 | drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, | |
178 | struct drm_crtc *crtc) | |
179 | { | |
180 | struct drm_plane *plane = plane_state->plane; | |
181 | struct drm_crtc_state *crtc_state; | |
182 | /* Nothing to do for same crtc*/ | |
183 | if (plane_state->crtc == crtc) | |
184 | return 0; | |
185 | if (plane_state->crtc) { | |
186 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
187 | plane_state->crtc); | |
188 | if (WARN_ON(IS_ERR(crtc_state))) | |
189 | return PTR_ERR(crtc_state); | |
190 | ||
191 | crtc_state->plane_mask &= ~drm_plane_mask(plane); | |
192 | } | |
193 | ||
194 | plane_state->crtc = crtc; | |
195 | ||
196 | if (crtc) { | |
197 | crtc_state = drm_atomic_get_crtc_state(plane_state->state, | |
198 | crtc); | |
199 | if (IS_ERR(crtc_state)) | |
200 | return PTR_ERR(crtc_state); | |
201 | crtc_state->plane_mask |= drm_plane_mask(plane); | |
202 | } | |
203 | ||
204 | if (crtc) | |
205 | DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n", | |
206 | plane->base.id, plane->name, plane_state, | |
207 | crtc->base.id, crtc->name); | |
208 | else | |
209 | DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [NOCRTC]\n", | |
210 | plane->base.id, plane->name, plane_state); | |
211 | ||
212 | return 0; | |
213 | } | |
214 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); | |
215 | ||
216 | /** | |
217 | * drm_atomic_set_fb_for_plane - set framebuffer for plane | |
218 | * @plane_state: atomic state object for the plane | |
219 | * @fb: fb to use for the plane | |
220 | * | |
221 | * Changing the assigned framebuffer for a plane requires us to grab a reference | |
222 | * to the new fb and drop the reference to the old fb, if there is one. This | |
223 | * function takes care of all these details besides updating the pointer in the | |
224 | * state object itself. | |
225 | */ | |
226 | void | |
227 | drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, | |
228 | struct drm_framebuffer *fb) | |
229 | { | |
230 | struct drm_plane *plane = plane_state->plane; | |
231 | ||
232 | if (fb) | |
233 | DRM_DEBUG_ATOMIC("Set [FB:%d] for [PLANE:%d:%s] state %p\n", | |
234 | fb->base.id, plane->base.id, plane->name, | |
235 | plane_state); | |
236 | else | |
237 | DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n", | |
238 | plane->base.id, plane->name, plane_state); | |
239 | ||
240 | drm_framebuffer_assign(&plane_state->fb, fb); | |
241 | } | |
242 | EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); | |
243 | ||
244 | /** | |
245 | * drm_atomic_set_fence_for_plane - set fence for plane | |
246 | * @plane_state: atomic state object for the plane | |
247 | * @fence: dma_fence to use for the plane | |
248 | * | |
249 | * Helper to setup the plane_state fence in case it is not set yet. | |
250 | * By using this drivers doesn't need to worry if the user choose | |
251 | * implicit or explicit fencing. | |
252 | * | |
253 | * This function will not set the fence to the state if it was set | |
254 | * via explicit fencing interfaces on the atomic ioctl. In that case it will | |
255 | * drop the reference to the fence as we are not storing it anywhere. | |
256 | * Otherwise, if &drm_plane_state.fence is not set this function we just set it | |
257 | * with the received implicit fence. In both cases this function consumes a | |
258 | * reference for @fence. | |
259 | * | |
260 | * This way explicit fencing can be used to overrule implicit fencing, which is | |
261 | * important to make explicit fencing use-cases work: One example is using one | |
262 | * buffer for 2 screens with different refresh rates. Implicit fencing will | |
263 | * clamp rendering to the refresh rate of the slower screen, whereas explicit | |
264 | * fence allows 2 independent render and display loops on a single buffer. If a | |
265 | * driver allows obeys both implicit and explicit fences for plane updates, then | |
266 | * it will break all the benefits of explicit fencing. | |
267 | */ | |
268 | void | |
269 | drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state, | |
270 | struct dma_fence *fence) | |
271 | { | |
272 | if (plane_state->fence) { | |
273 | dma_fence_put(fence); | |
274 | return; | |
275 | } | |
276 | ||
277 | plane_state->fence = fence; | |
278 | } | |
279 | EXPORT_SYMBOL(drm_atomic_set_fence_for_plane); | |
280 | ||
281 | /** | |
282 | * drm_atomic_set_crtc_for_connector - set crtc for connector | |
283 | * @conn_state: atomic state object for the connector | |
284 | * @crtc: crtc to use for the connector | |
285 | * | |
286 | * Changing the assigned crtc for a connector requires us to grab the lock and | |
287 | * state for the new crtc, as needed. This function takes care of all these | |
288 | * details besides updating the pointer in the state object itself. | |
289 | * | |
290 | * Returns: | |
291 | * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK | |
292 | * then the w/w mutex code has detected a deadlock and the entire atomic | |
293 | * sequence must be restarted. All other errors are fatal. | |
294 | */ | |
295 | int | |
296 | drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, | |
297 | struct drm_crtc *crtc) | |
298 | { | |
299 | struct drm_connector *connector = conn_state->connector; | |
300 | struct drm_crtc_state *crtc_state; | |
301 | ||
302 | if (conn_state->crtc == crtc) | |
303 | return 0; | |
304 | ||
305 | if (conn_state->crtc) { | |
306 | crtc_state = drm_atomic_get_new_crtc_state(conn_state->state, | |
307 | conn_state->crtc); | |
308 | ||
309 | crtc_state->connector_mask &= | |
310 | ~drm_connector_mask(conn_state->connector); | |
311 | ||
312 | drm_connector_put(conn_state->connector); | |
313 | conn_state->crtc = NULL; | |
314 | } | |
315 | ||
316 | if (crtc) { | |
317 | crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); | |
318 | if (IS_ERR(crtc_state)) | |
319 | return PTR_ERR(crtc_state); | |
320 | ||
321 | crtc_state->connector_mask |= | |
322 | drm_connector_mask(conn_state->connector); | |
323 | ||
324 | drm_connector_get(conn_state->connector); | |
325 | conn_state->crtc = crtc; | |
326 | ||
327 | DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n", | |
328 | connector->base.id, connector->name, | |
329 | conn_state, crtc->base.id, crtc->name); | |
330 | } else { | |
331 | DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n", | |
332 | connector->base.id, connector->name, | |
333 | conn_state); | |
334 | } | |
335 | ||
336 | return 0; | |
337 | } | |
338 | EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); | |
339 | ||
340 | static void set_out_fence_for_crtc(struct drm_atomic_state *state, | |
341 | struct drm_crtc *crtc, s32 __user *fence_ptr) | |
342 | { | |
343 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr; | |
344 | } | |
345 | ||
346 | static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state, | |
347 | struct drm_crtc *crtc) | |
348 | { | |
349 | s32 __user *fence_ptr; | |
350 | ||
351 | fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr; | |
352 | state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL; | |
353 | ||
354 | return fence_ptr; | |
355 | } | |
356 | ||
357 | static int set_out_fence_for_connector(struct drm_atomic_state *state, | |
358 | struct drm_connector *connector, | |
359 | s32 __user *fence_ptr) | |
360 | { | |
361 | unsigned int index = drm_connector_index(connector); | |
362 | ||
363 | if (!fence_ptr) | |
364 | return 0; | |
365 | ||
366 | if (put_user(-1, fence_ptr)) | |
367 | return -EFAULT; | |
368 | ||
369 | state->connectors[index].out_fence_ptr = fence_ptr; | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state, | |
375 | struct drm_connector *connector) | |
376 | { | |
377 | unsigned int index = drm_connector_index(connector); | |
378 | s32 __user *fence_ptr; | |
379 | ||
380 | fence_ptr = state->connectors[index].out_fence_ptr; | |
381 | state->connectors[index].out_fence_ptr = NULL; | |
382 | ||
383 | return fence_ptr; | |
384 | } | |
385 | ||
386 | static int | |
387 | drm_atomic_replace_property_blob_from_id(struct drm_device *dev, | |
388 | struct drm_property_blob **blob, | |
389 | uint64_t blob_id, | |
390 | ssize_t expected_size, | |
391 | ssize_t expected_elem_size, | |
392 | bool *replaced) | |
393 | { | |
394 | struct drm_property_blob *new_blob = NULL; | |
395 | ||
396 | if (blob_id != 0) { | |
397 | new_blob = drm_property_lookup_blob(dev, blob_id); | |
398 | if (new_blob == NULL) | |
399 | return -EINVAL; | |
400 | ||
401 | if (expected_size > 0 && | |
402 | new_blob->length != expected_size) { | |
403 | drm_property_blob_put(new_blob); | |
404 | return -EINVAL; | |
405 | } | |
406 | if (expected_elem_size > 0 && | |
407 | new_blob->length % expected_elem_size != 0) { | |
408 | drm_property_blob_put(new_blob); | |
409 | return -EINVAL; | |
410 | } | |
411 | } | |
412 | ||
413 | *replaced |= drm_property_replace_blob(blob, new_blob); | |
414 | drm_property_blob_put(new_blob); | |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
419 | static int drm_atomic_crtc_set_property(struct drm_crtc *crtc, | |
420 | struct drm_crtc_state *state, struct drm_property *property, | |
421 | uint64_t val) | |
422 | { | |
423 | struct drm_device *dev = crtc->dev; | |
424 | struct drm_mode_config *config = &dev->mode_config; | |
425 | bool replaced = false; | |
426 | int ret; | |
427 | ||
428 | if (property == config->prop_active) | |
429 | state->active = val; | |
430 | else if (property == config->prop_mode_id) { | |
431 | struct drm_property_blob *mode = | |
432 | drm_property_lookup_blob(dev, val); | |
433 | ret = drm_atomic_set_mode_prop_for_crtc(state, mode); | |
434 | drm_property_blob_put(mode); | |
435 | return ret; | |
436 | } else if (property == config->degamma_lut_property) { | |
437 | ret = drm_atomic_replace_property_blob_from_id(dev, | |
438 | &state->degamma_lut, | |
439 | val, | |
440 | -1, sizeof(struct drm_color_lut), | |
441 | &replaced); | |
442 | state->color_mgmt_changed |= replaced; | |
443 | return ret; | |
444 | } else if (property == config->ctm_property) { | |
445 | ret = drm_atomic_replace_property_blob_from_id(dev, | |
446 | &state->ctm, | |
447 | val, | |
448 | sizeof(struct drm_color_ctm), -1, | |
449 | &replaced); | |
450 | state->color_mgmt_changed |= replaced; | |
451 | return ret; | |
452 | } else if (property == config->gamma_lut_property) { | |
453 | ret = drm_atomic_replace_property_blob_from_id(dev, | |
454 | &state->gamma_lut, | |
455 | val, | |
456 | -1, sizeof(struct drm_color_lut), | |
457 | &replaced); | |
458 | state->color_mgmt_changed |= replaced; | |
459 | return ret; | |
460 | } else if (property == config->prop_out_fence_ptr) { | |
461 | s32 __user *fence_ptr = u64_to_user_ptr(val); | |
462 | ||
463 | if (!fence_ptr) | |
464 | return 0; | |
465 | ||
466 | if (put_user(-1, fence_ptr)) | |
467 | return -EFAULT; | |
468 | ||
469 | set_out_fence_for_crtc(state->state, crtc, fence_ptr); | |
470 | } else if (crtc->funcs->atomic_set_property) { | |
471 | return crtc->funcs->atomic_set_property(crtc, state, property, val); | |
472 | } else { | |
473 | DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n", | |
474 | crtc->base.id, crtc->name, | |
475 | property->base.id, property->name); | |
476 | return -EINVAL; | |
477 | } | |
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
482 | static int | |
483 | drm_atomic_crtc_get_property(struct drm_crtc *crtc, | |
484 | const struct drm_crtc_state *state, | |
485 | struct drm_property *property, uint64_t *val) | |
486 | { | |
487 | struct drm_device *dev = crtc->dev; | |
488 | struct drm_mode_config *config = &dev->mode_config; | |
489 | ||
490 | if (property == config->prop_active) | |
491 | *val = state->active; | |
492 | else if (property == config->prop_mode_id) | |
493 | *val = (state->mode_blob) ? state->mode_blob->base.id : 0; | |
494 | else if (property == config->degamma_lut_property) | |
495 | *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; | |
496 | else if (property == config->ctm_property) | |
497 | *val = (state->ctm) ? state->ctm->base.id : 0; | |
498 | else if (property == config->gamma_lut_property) | |
499 | *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; | |
500 | else if (property == config->prop_out_fence_ptr) | |
501 | *val = 0; | |
502 | else if (crtc->funcs->atomic_get_property) | |
503 | return crtc->funcs->atomic_get_property(crtc, state, property, val); | |
504 | else | |
505 | return -EINVAL; | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | static int drm_atomic_plane_set_property(struct drm_plane *plane, | |
511 | struct drm_plane_state *state, struct drm_property *property, | |
512 | uint64_t val) | |
513 | { | |
514 | struct drm_device *dev = plane->dev; | |
515 | struct drm_mode_config *config = &dev->mode_config; | |
516 | ||
517 | if (property == config->prop_fb_id) { | |
518 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val); | |
519 | drm_atomic_set_fb_for_plane(state, fb); | |
520 | if (fb) | |
521 | drm_framebuffer_put(fb); | |
522 | } else if (property == config->prop_in_fence_fd) { | |
523 | if (state->fence) | |
524 | return -EINVAL; | |
525 | ||
526 | if (U642I64(val) == -1) | |
527 | return 0; | |
528 | ||
529 | state->fence = sync_file_get_fence(val); | |
530 | if (!state->fence) | |
531 | return -EINVAL; | |
532 | ||
533 | } else if (property == config->prop_crtc_id) { | |
534 | struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val); | |
535 | return drm_atomic_set_crtc_for_plane(state, crtc); | |
536 | } else if (property == config->prop_crtc_x) { | |
537 | state->crtc_x = U642I64(val); | |
538 | } else if (property == config->prop_crtc_y) { | |
539 | state->crtc_y = U642I64(val); | |
540 | } else if (property == config->prop_crtc_w) { | |
541 | state->crtc_w = val; | |
542 | } else if (property == config->prop_crtc_h) { | |
543 | state->crtc_h = val; | |
544 | } else if (property == config->prop_src_x) { | |
545 | state->src_x = val; | |
546 | } else if (property == config->prop_src_y) { | |
547 | state->src_y = val; | |
548 | } else if (property == config->prop_src_w) { | |
549 | state->src_w = val; | |
550 | } else if (property == config->prop_src_h) { | |
551 | state->src_h = val; | |
552 | } else if (property == plane->alpha_property) { | |
553 | state->alpha = val; | |
554 | } else if (property == plane->blend_mode_property) { | |
555 | state->pixel_blend_mode = val; | |
556 | } else if (property == plane->rotation_property) { | |
557 | if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) { | |
558 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n", | |
559 | plane->base.id, plane->name, val); | |
560 | return -EINVAL; | |
561 | } | |
562 | state->rotation = val; | |
563 | } else if (property == plane->zpos_property) { | |
564 | state->zpos = val; | |
565 | } else if (property == plane->color_encoding_property) { | |
566 | state->color_encoding = val; | |
567 | } else if (property == plane->color_range_property) { | |
568 | state->color_range = val; | |
569 | } else if (plane->funcs->atomic_set_property) { | |
570 | return plane->funcs->atomic_set_property(plane, state, | |
571 | property, val); | |
572 | } else { | |
573 | DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n", | |
574 | plane->base.id, plane->name, | |
575 | property->base.id, property->name); | |
576 | return -EINVAL; | |
577 | } | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
582 | static int | |
583 | drm_atomic_plane_get_property(struct drm_plane *plane, | |
584 | const struct drm_plane_state *state, | |
585 | struct drm_property *property, uint64_t *val) | |
586 | { | |
587 | struct drm_device *dev = plane->dev; | |
588 | struct drm_mode_config *config = &dev->mode_config; | |
589 | ||
590 | if (property == config->prop_fb_id) { | |
591 | *val = (state->fb) ? state->fb->base.id : 0; | |
592 | } else if (property == config->prop_in_fence_fd) { | |
593 | *val = -1; | |
594 | } else if (property == config->prop_crtc_id) { | |
595 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
596 | } else if (property == config->prop_crtc_x) { | |
597 | *val = I642U64(state->crtc_x); | |
598 | } else if (property == config->prop_crtc_y) { | |
599 | *val = I642U64(state->crtc_y); | |
600 | } else if (property == config->prop_crtc_w) { | |
601 | *val = state->crtc_w; | |
602 | } else if (property == config->prop_crtc_h) { | |
603 | *val = state->crtc_h; | |
604 | } else if (property == config->prop_src_x) { | |
605 | *val = state->src_x; | |
606 | } else if (property == config->prop_src_y) { | |
607 | *val = state->src_y; | |
608 | } else if (property == config->prop_src_w) { | |
609 | *val = state->src_w; | |
610 | } else if (property == config->prop_src_h) { | |
611 | *val = state->src_h; | |
612 | } else if (property == plane->alpha_property) { | |
613 | *val = state->alpha; | |
614 | } else if (property == plane->blend_mode_property) { | |
615 | *val = state->pixel_blend_mode; | |
616 | } else if (property == plane->rotation_property) { | |
617 | *val = state->rotation; | |
618 | } else if (property == plane->zpos_property) { | |
619 | *val = state->zpos; | |
620 | } else if (property == plane->color_encoding_property) { | |
621 | *val = state->color_encoding; | |
622 | } else if (property == plane->color_range_property) { | |
623 | *val = state->color_range; | |
624 | } else if (plane->funcs->atomic_get_property) { | |
625 | return plane->funcs->atomic_get_property(plane, state, property, val); | |
626 | } else { | |
627 | return -EINVAL; | |
628 | } | |
629 | ||
630 | return 0; | |
631 | } | |
632 | ||
633 | static struct drm_writeback_job * | |
634 | drm_atomic_get_writeback_job(struct drm_connector_state *conn_state) | |
635 | { | |
636 | WARN_ON(conn_state->connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK); | |
637 | ||
638 | if (!conn_state->writeback_job) | |
639 | conn_state->writeback_job = | |
640 | kzalloc(sizeof(*conn_state->writeback_job), GFP_KERNEL); | |
641 | ||
642 | return conn_state->writeback_job; | |
643 | } | |
644 | ||
645 | static int drm_atomic_set_writeback_fb_for_connector( | |
646 | struct drm_connector_state *conn_state, | |
647 | struct drm_framebuffer *fb) | |
648 | { | |
649 | struct drm_writeback_job *job = | |
650 | drm_atomic_get_writeback_job(conn_state); | |
651 | if (!job) | |
652 | return -ENOMEM; | |
653 | ||
654 | drm_framebuffer_assign(&job->fb, fb); | |
655 | ||
656 | if (fb) | |
657 | DRM_DEBUG_ATOMIC("Set [FB:%d] for connector state %p\n", | |
658 | fb->base.id, conn_state); | |
659 | else | |
660 | DRM_DEBUG_ATOMIC("Set [NOFB] for connector state %p\n", | |
661 | conn_state); | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
666 | static int drm_atomic_connector_set_property(struct drm_connector *connector, | |
667 | struct drm_connector_state *state, struct drm_property *property, | |
668 | uint64_t val) | |
669 | { | |
670 | struct drm_device *dev = connector->dev; | |
671 | struct drm_mode_config *config = &dev->mode_config; | |
672 | ||
673 | if (property == config->prop_crtc_id) { | |
674 | struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val); | |
675 | return drm_atomic_set_crtc_for_connector(state, crtc); | |
676 | } else if (property == config->dpms_property) { | |
677 | /* setting DPMS property requires special handling, which | |
678 | * is done in legacy setprop path for us. Disallow (for | |
679 | * now?) atomic writes to DPMS property: | |
680 | */ | |
681 | return -EINVAL; | |
682 | } else if (property == config->tv_select_subconnector_property) { | |
683 | state->tv.subconnector = val; | |
684 | } else if (property == config->tv_left_margin_property) { | |
685 | state->tv.margins.left = val; | |
686 | } else if (property == config->tv_right_margin_property) { | |
687 | state->tv.margins.right = val; | |
688 | } else if (property == config->tv_top_margin_property) { | |
689 | state->tv.margins.top = val; | |
690 | } else if (property == config->tv_bottom_margin_property) { | |
691 | state->tv.margins.bottom = val; | |
692 | } else if (property == config->tv_mode_property) { | |
693 | state->tv.mode = val; | |
694 | } else if (property == config->tv_brightness_property) { | |
695 | state->tv.brightness = val; | |
696 | } else if (property == config->tv_contrast_property) { | |
697 | state->tv.contrast = val; | |
698 | } else if (property == config->tv_flicker_reduction_property) { | |
699 | state->tv.flicker_reduction = val; | |
700 | } else if (property == config->tv_overscan_property) { | |
701 | state->tv.overscan = val; | |
702 | } else if (property == config->tv_saturation_property) { | |
703 | state->tv.saturation = val; | |
704 | } else if (property == config->tv_hue_property) { | |
705 | state->tv.hue = val; | |
706 | } else if (property == config->link_status_property) { | |
707 | /* Never downgrade from GOOD to BAD on userspace's request here, | |
708 | * only hw issues can do that. | |
709 | * | |
710 | * For an atomic property the userspace doesn't need to be able | |
711 | * to understand all the properties, but needs to be able to | |
712 | * restore the state it wants on VT switch. So if the userspace | |
713 | * tries to change the link_status from GOOD to BAD, driver | |
714 | * silently rejects it and returns a 0. This prevents userspace | |
715 | * from accidently breaking the display when it restores the | |
716 | * state. | |
717 | */ | |
718 | if (state->link_status != DRM_LINK_STATUS_GOOD) | |
719 | state->link_status = val; | |
720 | } else if (property == config->aspect_ratio_property) { | |
721 | state->picture_aspect_ratio = val; | |
722 | } else if (property == config->content_type_property) { | |
723 | state->content_type = val; | |
724 | } else if (property == connector->scaling_mode_property) { | |
725 | state->scaling_mode = val; | |
726 | } else if (property == connector->content_protection_property) { | |
727 | if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) { | |
728 | DRM_DEBUG_KMS("only drivers can set CP Enabled\n"); | |
729 | return -EINVAL; | |
730 | } | |
731 | state->content_protection = val; | |
732 | } else if (property == config->writeback_fb_id_property) { | |
733 | struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val); | |
734 | int ret = drm_atomic_set_writeback_fb_for_connector(state, fb); | |
735 | if (fb) | |
736 | drm_framebuffer_put(fb); | |
737 | return ret; | |
738 | } else if (property == config->writeback_out_fence_ptr_property) { | |
739 | s32 __user *fence_ptr = u64_to_user_ptr(val); | |
740 | ||
741 | return set_out_fence_for_connector(state->state, connector, | |
742 | fence_ptr); | |
743 | } else if (connector->funcs->atomic_set_property) { | |
744 | return connector->funcs->atomic_set_property(connector, | |
745 | state, property, val); | |
746 | } else { | |
747 | DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n", | |
748 | connector->base.id, connector->name, | |
749 | property->base.id, property->name); | |
750 | return -EINVAL; | |
751 | } | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
756 | static int | |
757 | drm_atomic_connector_get_property(struct drm_connector *connector, | |
758 | const struct drm_connector_state *state, | |
759 | struct drm_property *property, uint64_t *val) | |
760 | { | |
761 | struct drm_device *dev = connector->dev; | |
762 | struct drm_mode_config *config = &dev->mode_config; | |
763 | ||
764 | if (property == config->prop_crtc_id) { | |
765 | *val = (state->crtc) ? state->crtc->base.id : 0; | |
766 | } else if (property == config->dpms_property) { | |
767 | *val = connector->dpms; | |
768 | } else if (property == config->tv_select_subconnector_property) { | |
769 | *val = state->tv.subconnector; | |
770 | } else if (property == config->tv_left_margin_property) { | |
771 | *val = state->tv.margins.left; | |
772 | } else if (property == config->tv_right_margin_property) { | |
773 | *val = state->tv.margins.right; | |
774 | } else if (property == config->tv_top_margin_property) { | |
775 | *val = state->tv.margins.top; | |
776 | } else if (property == config->tv_bottom_margin_property) { | |
777 | *val = state->tv.margins.bottom; | |
778 | } else if (property == config->tv_mode_property) { | |
779 | *val = state->tv.mode; | |
780 | } else if (property == config->tv_brightness_property) { | |
781 | *val = state->tv.brightness; | |
782 | } else if (property == config->tv_contrast_property) { | |
783 | *val = state->tv.contrast; | |
784 | } else if (property == config->tv_flicker_reduction_property) { | |
785 | *val = state->tv.flicker_reduction; | |
786 | } else if (property == config->tv_overscan_property) { | |
787 | *val = state->tv.overscan; | |
788 | } else if (property == config->tv_saturation_property) { | |
789 | *val = state->tv.saturation; | |
790 | } else if (property == config->tv_hue_property) { | |
791 | *val = state->tv.hue; | |
792 | } else if (property == config->link_status_property) { | |
793 | *val = state->link_status; | |
794 | } else if (property == config->aspect_ratio_property) { | |
795 | *val = state->picture_aspect_ratio; | |
796 | } else if (property == config->content_type_property) { | |
797 | *val = state->content_type; | |
798 | } else if (property == connector->scaling_mode_property) { | |
799 | *val = state->scaling_mode; | |
800 | } else if (property == connector->content_protection_property) { | |
801 | *val = state->content_protection; | |
802 | } else if (property == config->writeback_fb_id_property) { | |
803 | /* Writeback framebuffer is one-shot, write and forget */ | |
804 | *val = 0; | |
805 | } else if (property == config->writeback_out_fence_ptr_property) { | |
806 | *val = 0; | |
807 | } else if (connector->funcs->atomic_get_property) { | |
808 | return connector->funcs->atomic_get_property(connector, | |
809 | state, property, val); | |
810 | } else { | |
811 | return -EINVAL; | |
812 | } | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
817 | int drm_atomic_get_property(struct drm_mode_object *obj, | |
818 | struct drm_property *property, uint64_t *val) | |
819 | { | |
820 | struct drm_device *dev = property->dev; | |
821 | int ret; | |
822 | ||
823 | switch (obj->type) { | |
824 | case DRM_MODE_OBJECT_CONNECTOR: { | |
825 | struct drm_connector *connector = obj_to_connector(obj); | |
826 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); | |
827 | ret = drm_atomic_connector_get_property(connector, | |
828 | connector->state, property, val); | |
829 | break; | |
830 | } | |
831 | case DRM_MODE_OBJECT_CRTC: { | |
832 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
833 | WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); | |
834 | ret = drm_atomic_crtc_get_property(crtc, | |
835 | crtc->state, property, val); | |
836 | break; | |
837 | } | |
838 | case DRM_MODE_OBJECT_PLANE: { | |
839 | struct drm_plane *plane = obj_to_plane(obj); | |
840 | WARN_ON(!drm_modeset_is_locked(&plane->mutex)); | |
841 | ret = drm_atomic_plane_get_property(plane, | |
842 | plane->state, property, val); | |
843 | break; | |
844 | } | |
845 | default: | |
846 | ret = -EINVAL; | |
847 | break; | |
848 | } | |
849 | ||
850 | return ret; | |
851 | } | |
852 | ||
853 | /* | |
854 | * The big monster ioctl | |
855 | */ | |
856 | ||
857 | static struct drm_pending_vblank_event *create_vblank_event( | |
858 | struct drm_crtc *crtc, uint64_t user_data) | |
859 | { | |
860 | struct drm_pending_vblank_event *e = NULL; | |
861 | ||
862 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
863 | if (!e) | |
864 | return NULL; | |
865 | ||
866 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; | |
867 | e->event.base.length = sizeof(e->event); | |
868 | e->event.vbl.crtc_id = crtc->base.id; | |
869 | e->event.vbl.user_data = user_data; | |
870 | ||
871 | return e; | |
872 | } | |
873 | ||
874 | int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state, | |
875 | struct drm_connector *connector, | |
876 | int mode) | |
877 | { | |
878 | struct drm_connector *tmp_connector; | |
879 | struct drm_connector_state *new_conn_state; | |
880 | struct drm_crtc *crtc; | |
881 | struct drm_crtc_state *crtc_state; | |
882 | int i, ret, old_mode = connector->dpms; | |
883 | bool active = false; | |
884 | ||
885 | ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex, | |
886 | state->acquire_ctx); | |
887 | if (ret) | |
888 | return ret; | |
889 | ||
890 | if (mode != DRM_MODE_DPMS_ON) | |
891 | mode = DRM_MODE_DPMS_OFF; | |
892 | connector->dpms = mode; | |
893 | ||
894 | crtc = connector->state->crtc; | |
895 | if (!crtc) | |
896 | goto out; | |
897 | ret = drm_atomic_add_affected_connectors(state, crtc); | |
898 | if (ret) | |
899 | goto out; | |
900 | ||
901 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
902 | if (IS_ERR(crtc_state)) { | |
903 | ret = PTR_ERR(crtc_state); | |
904 | goto out; | |
905 | } | |
906 | ||
907 | for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) { | |
908 | if (new_conn_state->crtc != crtc) | |
909 | continue; | |
910 | if (tmp_connector->dpms == DRM_MODE_DPMS_ON) { | |
911 | active = true; | |
912 | break; | |
913 | } | |
914 | } | |
915 | ||
916 | crtc_state->active = active; | |
917 | ret = drm_atomic_commit(state); | |
918 | out: | |
919 | if (ret != 0) | |
920 | connector->dpms = old_mode; | |
921 | return ret; | |
922 | } | |
923 | ||
924 | int drm_atomic_set_property(struct drm_atomic_state *state, | |
925 | struct drm_mode_object *obj, | |
926 | struct drm_property *prop, | |
927 | uint64_t prop_value) | |
928 | { | |
929 | struct drm_mode_object *ref; | |
930 | int ret; | |
931 | ||
932 | if (!drm_property_change_valid_get(prop, prop_value, &ref)) | |
933 | return -EINVAL; | |
934 | ||
935 | switch (obj->type) { | |
936 | case DRM_MODE_OBJECT_CONNECTOR: { | |
937 | struct drm_connector *connector = obj_to_connector(obj); | |
938 | struct drm_connector_state *connector_state; | |
939 | ||
940 | connector_state = drm_atomic_get_connector_state(state, connector); | |
941 | if (IS_ERR(connector_state)) { | |
942 | ret = PTR_ERR(connector_state); | |
943 | break; | |
944 | } | |
945 | ||
946 | ret = drm_atomic_connector_set_property(connector, | |
947 | connector_state, prop, prop_value); | |
948 | break; | |
949 | } | |
950 | case DRM_MODE_OBJECT_CRTC: { | |
951 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
952 | struct drm_crtc_state *crtc_state; | |
953 | ||
954 | crtc_state = drm_atomic_get_crtc_state(state, crtc); | |
955 | if (IS_ERR(crtc_state)) { | |
956 | ret = PTR_ERR(crtc_state); | |
957 | break; | |
958 | } | |
959 | ||
960 | ret = drm_atomic_crtc_set_property(crtc, | |
961 | crtc_state, prop, prop_value); | |
962 | break; | |
963 | } | |
964 | case DRM_MODE_OBJECT_PLANE: { | |
965 | struct drm_plane *plane = obj_to_plane(obj); | |
966 | struct drm_plane_state *plane_state; | |
967 | ||
968 | plane_state = drm_atomic_get_plane_state(state, plane); | |
969 | if (IS_ERR(plane_state)) { | |
970 | ret = PTR_ERR(plane_state); | |
971 | break; | |
972 | } | |
973 | ||
974 | ret = drm_atomic_plane_set_property(plane, | |
975 | plane_state, prop, prop_value); | |
976 | break; | |
977 | } | |
978 | default: | |
979 | ret = -EINVAL; | |
980 | break; | |
981 | } | |
982 | ||
983 | drm_property_change_valid_put(prop, ref); | |
984 | return ret; | |
985 | } | |
986 | ||
987 | /** | |
988 | * DOC: explicit fencing properties | |
989 | * | |
990 | * Explicit fencing allows userspace to control the buffer synchronization | |
991 | * between devices. A Fence or a group of fences are transfered to/from | |
992 | * userspace using Sync File fds and there are two DRM properties for that. | |
993 | * IN_FENCE_FD on each DRM Plane to send fences to the kernel and | |
994 | * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel. | |
995 | * | |
996 | * As a contrast, with implicit fencing the kernel keeps track of any | |
997 | * ongoing rendering, and automatically ensures that the atomic update waits | |
998 | * for any pending rendering to complete. For shared buffers represented with | |
999 | * a &struct dma_buf this is tracked in &struct reservation_object. | |
1000 | * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org), | |
1001 | * whereas explicit fencing is what Android wants. | |
1002 | * | |
1003 | * "IN_FENCE_FD”: | |
1004 | * Use this property to pass a fence that DRM should wait on before | |
1005 | * proceeding with the Atomic Commit request and show the framebuffer for | |
1006 | * the plane on the screen. The fence can be either a normal fence or a | |
1007 | * merged one, the sync_file framework will handle both cases and use a | |
1008 | * fence_array if a merged fence is received. Passing -1 here means no | |
1009 | * fences to wait on. | |
1010 | * | |
1011 | * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag | |
1012 | * it will only check if the Sync File is a valid one. | |
1013 | * | |
1014 | * On the driver side the fence is stored on the @fence parameter of | |
1015 | * &struct drm_plane_state. Drivers which also support implicit fencing | |
1016 | * should set the implicit fence using drm_atomic_set_fence_for_plane(), | |
1017 | * to make sure there's consistent behaviour between drivers in precedence | |
1018 | * of implicit vs. explicit fencing. | |
1019 | * | |
1020 | * "OUT_FENCE_PTR”: | |
1021 | * Use this property to pass a file descriptor pointer to DRM. Once the | |
1022 | * Atomic Commit request call returns OUT_FENCE_PTR will be filled with | |
1023 | * the file descriptor number of a Sync File. This Sync File contains the | |
1024 | * CRTC fence that will be signaled when all framebuffers present on the | |
1025 | * Atomic Commit * request for that given CRTC are scanned out on the | |
1026 | * screen. | |
1027 | * | |
1028 | * The Atomic Commit request fails if a invalid pointer is passed. If the | |
1029 | * Atomic Commit request fails for any other reason the out fence fd | |
1030 | * returned will be -1. On a Atomic Commit with the | |
1031 | * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1. | |
1032 | * | |
1033 | * Note that out-fences don't have a special interface to drivers and are | |
1034 | * internally represented by a &struct drm_pending_vblank_event in struct | |
1035 | * &drm_crtc_state, which is also used by the nonblocking atomic commit | |
1036 | * helpers and for the DRM event handling for existing userspace. | |
1037 | */ | |
1038 | ||
1039 | struct drm_out_fence_state { | |
1040 | s32 __user *out_fence_ptr; | |
1041 | struct sync_file *sync_file; | |
1042 | int fd; | |
1043 | }; | |
1044 | ||
1045 | static int setup_out_fence(struct drm_out_fence_state *fence_state, | |
1046 | struct dma_fence *fence) | |
1047 | { | |
1048 | fence_state->fd = get_unused_fd_flags(O_CLOEXEC); | |
1049 | if (fence_state->fd < 0) | |
1050 | return fence_state->fd; | |
1051 | ||
1052 | if (put_user(fence_state->fd, fence_state->out_fence_ptr)) | |
1053 | return -EFAULT; | |
1054 | ||
1055 | fence_state->sync_file = sync_file_create(fence); | |
1056 | if (!fence_state->sync_file) | |
1057 | return -ENOMEM; | |
1058 | ||
1059 | return 0; | |
1060 | } | |
1061 | ||
1062 | static int prepare_signaling(struct drm_device *dev, | |
1063 | struct drm_atomic_state *state, | |
1064 | struct drm_mode_atomic *arg, | |
1065 | struct drm_file *file_priv, | |
1066 | struct drm_out_fence_state **fence_state, | |
1067 | unsigned int *num_fences) | |
1068 | { | |
1069 | struct drm_crtc *crtc; | |
1070 | struct drm_crtc_state *crtc_state; | |
1071 | struct drm_connector *conn; | |
1072 | struct drm_connector_state *conn_state; | |
1073 | int i, c = 0, ret; | |
1074 | ||
1075 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) | |
1076 | return 0; | |
1077 | ||
1078 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { | |
1079 | s32 __user *fence_ptr; | |
1080 | ||
1081 | fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc); | |
1082 | ||
1083 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) { | |
1084 | struct drm_pending_vblank_event *e; | |
1085 | ||
1086 | e = create_vblank_event(crtc, arg->user_data); | |
1087 | if (!e) | |
1088 | return -ENOMEM; | |
1089 | ||
1090 | crtc_state->event = e; | |
1091 | } | |
1092 | ||
1093 | if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { | |
1094 | struct drm_pending_vblank_event *e = crtc_state->event; | |
1095 | ||
1096 | if (!file_priv) | |
1097 | continue; | |
1098 | ||
1099 | ret = drm_event_reserve_init(dev, file_priv, &e->base, | |
1100 | &e->event.base); | |
1101 | if (ret) { | |
1102 | kfree(e); | |
1103 | crtc_state->event = NULL; | |
1104 | return ret; | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | if (fence_ptr) { | |
1109 | struct dma_fence *fence; | |
1110 | struct drm_out_fence_state *f; | |
1111 | ||
1112 | f = krealloc(*fence_state, sizeof(**fence_state) * | |
1113 | (*num_fences + 1), GFP_KERNEL); | |
1114 | if (!f) | |
1115 | return -ENOMEM; | |
1116 | ||
1117 | memset(&f[*num_fences], 0, sizeof(*f)); | |
1118 | ||
1119 | f[*num_fences].out_fence_ptr = fence_ptr; | |
1120 | *fence_state = f; | |
1121 | ||
1122 | fence = drm_crtc_create_fence(crtc); | |
1123 | if (!fence) | |
1124 | return -ENOMEM; | |
1125 | ||
1126 | ret = setup_out_fence(&f[(*num_fences)++], fence); | |
1127 | if (ret) { | |
1128 | dma_fence_put(fence); | |
1129 | return ret; | |
1130 | } | |
1131 | ||
1132 | crtc_state->event->base.fence = fence; | |
1133 | } | |
1134 | ||
1135 | c++; | |
1136 | } | |
1137 | ||
1138 | for_each_new_connector_in_state(state, conn, conn_state, i) { | |
1139 | struct drm_writeback_connector *wb_conn; | |
1140 | struct drm_writeback_job *job; | |
1141 | struct drm_out_fence_state *f; | |
1142 | struct dma_fence *fence; | |
1143 | s32 __user *fence_ptr; | |
1144 | ||
1145 | fence_ptr = get_out_fence_for_connector(state, conn); | |
1146 | if (!fence_ptr) | |
1147 | continue; | |
1148 | ||
1149 | job = drm_atomic_get_writeback_job(conn_state); | |
1150 | if (!job) | |
1151 | return -ENOMEM; | |
1152 | ||
1153 | f = krealloc(*fence_state, sizeof(**fence_state) * | |
1154 | (*num_fences + 1), GFP_KERNEL); | |
1155 | if (!f) | |
1156 | return -ENOMEM; | |
1157 | ||
1158 | memset(&f[*num_fences], 0, sizeof(*f)); | |
1159 | ||
1160 | f[*num_fences].out_fence_ptr = fence_ptr; | |
1161 | *fence_state = f; | |
1162 | ||
1163 | wb_conn = drm_connector_to_writeback(conn); | |
1164 | fence = drm_writeback_get_out_fence(wb_conn); | |
1165 | if (!fence) | |
1166 | return -ENOMEM; | |
1167 | ||
1168 | ret = setup_out_fence(&f[(*num_fences)++], fence); | |
1169 | if (ret) { | |
1170 | dma_fence_put(fence); | |
1171 | return ret; | |
1172 | } | |
1173 | ||
1174 | job->out_fence = fence; | |
1175 | } | |
1176 | ||
1177 | /* | |
1178 | * Having this flag means user mode pends on event which will never | |
1179 | * reach due to lack of at least one CRTC for signaling | |
1180 | */ | |
1181 | if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
1182 | return -EINVAL; | |
1183 | ||
1184 | return 0; | |
1185 | } | |
1186 | ||
1187 | static void complete_signaling(struct drm_device *dev, | |
1188 | struct drm_atomic_state *state, | |
1189 | struct drm_out_fence_state *fence_state, | |
1190 | unsigned int num_fences, | |
1191 | bool install_fds) | |
1192 | { | |
1193 | struct drm_crtc *crtc; | |
1194 | struct drm_crtc_state *crtc_state; | |
1195 | int i; | |
1196 | ||
1197 | if (install_fds) { | |
1198 | for (i = 0; i < num_fences; i++) | |
1199 | fd_install(fence_state[i].fd, | |
1200 | fence_state[i].sync_file->file); | |
1201 | ||
1202 | kfree(fence_state); | |
1203 | return; | |
1204 | } | |
1205 | ||
1206 | for_each_new_crtc_in_state(state, crtc, crtc_state, i) { | |
1207 | struct drm_pending_vblank_event *event = crtc_state->event; | |
1208 | /* | |
1209 | * Free the allocated event. drm_atomic_helper_setup_commit | |
1210 | * can allocate an event too, so only free it if it's ours | |
1211 | * to prevent a double free in drm_atomic_state_clear. | |
1212 | */ | |
1213 | if (event && (event->base.fence || event->base.file_priv)) { | |
1214 | drm_event_cancel_free(dev, &event->base); | |
1215 | crtc_state->event = NULL; | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | if (!fence_state) | |
1220 | return; | |
1221 | ||
1222 | for (i = 0; i < num_fences; i++) { | |
1223 | if (fence_state[i].sync_file) | |
1224 | fput(fence_state[i].sync_file->file); | |
1225 | if (fence_state[i].fd >= 0) | |
1226 | put_unused_fd(fence_state[i].fd); | |
1227 | ||
1228 | /* If this fails log error to the user */ | |
1229 | if (fence_state[i].out_fence_ptr && | |
1230 | put_user(-1, fence_state[i].out_fence_ptr)) | |
1231 | DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n"); | |
1232 | } | |
1233 | ||
1234 | kfree(fence_state); | |
1235 | } | |
1236 | ||
1237 | int drm_mode_atomic_ioctl(struct drm_device *dev, | |
1238 | void *data, struct drm_file *file_priv) | |
1239 | { | |
1240 | struct drm_mode_atomic *arg = data; | |
1241 | uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); | |
1242 | uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); | |
1243 | uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
1244 | uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); | |
1245 | unsigned int copied_objs, copied_props; | |
1246 | struct drm_atomic_state *state; | |
1247 | struct drm_modeset_acquire_ctx ctx; | |
1248 | struct drm_out_fence_state *fence_state; | |
1249 | int ret = 0; | |
1250 | unsigned int i, j, num_fences; | |
1251 | ||
1252 | /* disallow for drivers not supporting atomic: */ | |
1253 | if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) | |
69fdf420 | 1254 | return -EOPNOTSUPP; |
72fdb40c DV |
1255 | |
1256 | /* disallow for userspace that has not enabled atomic cap (even | |
1257 | * though this may be a bit overkill, since legacy userspace | |
1258 | * wouldn't know how to call this ioctl) | |
1259 | */ | |
1260 | if (!file_priv->atomic) | |
1261 | return -EINVAL; | |
1262 | ||
1263 | if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) | |
1264 | return -EINVAL; | |
1265 | ||
1266 | if (arg->reserved) | |
1267 | return -EINVAL; | |
1268 | ||
1269 | if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && | |
1270 | !dev->mode_config.async_page_flip) | |
1271 | return -EINVAL; | |
1272 | ||
1273 | /* can't test and expect an event at the same time. */ | |
1274 | if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && | |
1275 | (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) | |
1276 | return -EINVAL; | |
1277 | ||
1278 | drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); | |
1279 | ||
1280 | state = drm_atomic_state_alloc(dev); | |
1281 | if (!state) | |
1282 | return -ENOMEM; | |
1283 | ||
1284 | state->acquire_ctx = &ctx; | |
1285 | state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); | |
1286 | ||
1287 | retry: | |
1288 | copied_objs = 0; | |
1289 | copied_props = 0; | |
1290 | fence_state = NULL; | |
1291 | num_fences = 0; | |
1292 | ||
1293 | for (i = 0; i < arg->count_objs; i++) { | |
1294 | uint32_t obj_id, count_props; | |
1295 | struct drm_mode_object *obj; | |
1296 | ||
1297 | if (get_user(obj_id, objs_ptr + copied_objs)) { | |
1298 | ret = -EFAULT; | |
1299 | goto out; | |
1300 | } | |
1301 | ||
1302 | obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY); | |
1303 | if (!obj) { | |
1304 | ret = -ENOENT; | |
1305 | goto out; | |
1306 | } | |
1307 | ||
1308 | if (!obj->properties) { | |
1309 | drm_mode_object_put(obj); | |
1310 | ret = -ENOENT; | |
1311 | goto out; | |
1312 | } | |
1313 | ||
1314 | if (get_user(count_props, count_props_ptr + copied_objs)) { | |
1315 | drm_mode_object_put(obj); | |
1316 | ret = -EFAULT; | |
1317 | goto out; | |
1318 | } | |
1319 | ||
1320 | copied_objs++; | |
1321 | ||
1322 | for (j = 0; j < count_props; j++) { | |
1323 | uint32_t prop_id; | |
1324 | uint64_t prop_value; | |
1325 | struct drm_property *prop; | |
1326 | ||
1327 | if (get_user(prop_id, props_ptr + copied_props)) { | |
1328 | drm_mode_object_put(obj); | |
1329 | ret = -EFAULT; | |
1330 | goto out; | |
1331 | } | |
1332 | ||
1333 | prop = drm_mode_obj_find_prop_id(obj, prop_id); | |
1334 | if (!prop) { | |
1335 | drm_mode_object_put(obj); | |
1336 | ret = -ENOENT; | |
1337 | goto out; | |
1338 | } | |
1339 | ||
1340 | if (copy_from_user(&prop_value, | |
1341 | prop_values_ptr + copied_props, | |
1342 | sizeof(prop_value))) { | |
1343 | drm_mode_object_put(obj); | |
1344 | ret = -EFAULT; | |
1345 | goto out; | |
1346 | } | |
1347 | ||
1348 | ret = drm_atomic_set_property(state, obj, prop, | |
1349 | prop_value); | |
1350 | if (ret) { | |
1351 | drm_mode_object_put(obj); | |
1352 | goto out; | |
1353 | } | |
1354 | ||
1355 | copied_props++; | |
1356 | } | |
1357 | ||
1358 | drm_mode_object_put(obj); | |
1359 | } | |
1360 | ||
1361 | ret = prepare_signaling(dev, state, arg, file_priv, &fence_state, | |
1362 | &num_fences); | |
1363 | if (ret) | |
1364 | goto out; | |
1365 | ||
1366 | if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { | |
1367 | ret = drm_atomic_check_only(state); | |
1368 | } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { | |
1369 | ret = drm_atomic_nonblocking_commit(state); | |
1370 | } else { | |
1371 | if (unlikely(drm_debug & DRM_UT_STATE)) | |
1372 | drm_atomic_print_state(state); | |
1373 | ||
1374 | ret = drm_atomic_commit(state); | |
1375 | } | |
1376 | ||
1377 | out: | |
1378 | complete_signaling(dev, state, fence_state, num_fences, !ret); | |
1379 | ||
1380 | if (ret == -EDEADLK) { | |
1381 | drm_atomic_state_clear(state); | |
1382 | ret = drm_modeset_backoff(&ctx); | |
1383 | if (!ret) | |
1384 | goto retry; | |
1385 | } | |
1386 | ||
1387 | drm_atomic_state_put(state); | |
1388 | ||
1389 | drm_modeset_drop_locks(&ctx); | |
1390 | drm_modeset_acquire_fini(&ctx); | |
1391 | ||
1392 | return ret; | |
1393 | } |