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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 its forms: 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 : 0 : int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
65 : : const struct drm_display_mode *mode)
66 : : {
67 : 0 : struct drm_crtc *crtc = state->crtc;
68 : 0 : struct drm_mode_modeinfo umode;
69 : :
70 : : /* Early return for no change. */
71 [ # # # # ]: 0 : if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
72 : : return 0;
73 : :
74 : 0 : drm_property_blob_put(state->mode_blob);
75 : 0 : state->mode_blob = NULL;
76 : :
77 [ # # ]: 0 : if (mode) {
78 : 0 : drm_mode_convert_to_umode(&umode, mode);
79 : 0 : state->mode_blob =
80 : 0 : drm_property_create_blob(state->crtc->dev,
81 : : sizeof(umode),
82 : : &umode);
83 [ # # ]: 0 : if (IS_ERR(state->mode_blob))
84 : 0 : return PTR_ERR(state->mode_blob);
85 : :
86 : 0 : drm_mode_copy(&state->mode, mode);
87 : 0 : state->enable = true;
88 : 0 : 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 : 0 : memset(&state->mode, 0, sizeof(state->mode));
92 : 0 : state->enable = false;
93 : 0 : 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 : 0 : int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
115 : : struct drm_property_blob *blob)
116 : : {
117 : 0 : struct drm_crtc *crtc = state->crtc;
118 : :
119 [ # # ]: 0 : if (blob == state->mode_blob)
120 : : return 0;
121 : :
122 : 0 : drm_property_blob_put(state->mode_blob);
123 : 0 : state->mode_blob = NULL;
124 : :
125 : 0 : memset(&state->mode, 0, sizeof(state->mode));
126 : :
127 [ # # ]: 0 : if (blob) {
128 : 0 : int ret;
129 : :
130 [ # # ]: 0 : if (blob->length != sizeof(struct drm_mode_modeinfo)) {
131 : 0 : DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n",
132 : : crtc->base.id, crtc->name,
133 : : blob->length);
134 : 0 : return -EINVAL;
135 : : }
136 : :
137 : 0 : ret = drm_mode_convert_umode(crtc->dev,
138 : 0 : &state->mode, blob->data);
139 [ # # ]: 0 : if (ret) {
140 : 0 : 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 : 0 : drm_mode_debug_printmodeline(&state->mode);
144 : 0 : return -EINVAL;
145 : : }
146 : :
147 : 0 : state->mode_blob = drm_property_blob_get(blob);
148 : 0 : state->enable = true;
149 : 0 : 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 : 0 : state->enable = false;
154 : 0 : 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 : 0 : drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
178 : : struct drm_crtc *crtc)
179 : : {
180 : 0 : struct drm_plane *plane = plane_state->plane;
181 : 0 : struct drm_crtc_state *crtc_state;
182 : : /* Nothing to do for same crtc*/
183 [ # # ]: 0 : if (plane_state->crtc == crtc)
184 : : return 0;
185 [ # # ]: 0 : if (plane_state->crtc) {
186 : 0 : crtc_state = drm_atomic_get_crtc_state(plane_state->state,
187 : : plane_state->crtc);
188 [ # # # # ]: 0 : if (WARN_ON(IS_ERR(crtc_state)))
189 : 0 : return PTR_ERR(crtc_state);
190 : :
191 : 0 : crtc_state->plane_mask &= ~drm_plane_mask(plane);
192 : : }
193 : :
194 : 0 : plane_state->crtc = crtc;
195 : :
196 [ # # ]: 0 : if (crtc) {
197 : 0 : crtc_state = drm_atomic_get_crtc_state(plane_state->state,
198 : : crtc);
199 [ # # ]: 0 : if (IS_ERR(crtc_state))
200 : 0 : return PTR_ERR(crtc_state);
201 : 0 : crtc_state->plane_mask |= drm_plane_mask(plane);
202 : : }
203 : :
204 [ # # ]: 0 : if (crtc)
205 : 0 : 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 : 0 : 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 : 0 : drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
228 : : struct drm_framebuffer *fb)
229 : : {
230 : 0 : struct drm_plane *plane = plane_state->plane;
231 : :
232 [ # # ]: 0 : if (fb)
233 : 0 : 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 : 0 : DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n",
238 : : plane->base.id, plane->name, plane_state);
239 : :
240 : 0 : drm_framebuffer_assign(&plane_state->fb, fb);
241 : 0 : }
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 : 0 : drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
270 : : struct dma_fence *fence)
271 : : {
272 [ # # ]: 0 : if (plane_state->fence) {
273 : 0 : dma_fence_put(fence);
274 : 0 : return;
275 : : }
276 : :
277 : 0 : 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 : 0 : drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
297 : : struct drm_crtc *crtc)
298 : : {
299 : 0 : struct drm_connector *connector = conn_state->connector;
300 : 0 : struct drm_crtc_state *crtc_state;
301 : :
302 [ # # ]: 0 : if (conn_state->crtc == crtc)
303 : : return 0;
304 : :
305 [ # # ]: 0 : if (conn_state->crtc) {
306 : 0 : crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
307 : : conn_state->crtc);
308 : :
309 : 0 : crtc_state->connector_mask &=
310 : 0 : ~drm_connector_mask(conn_state->connector);
311 : :
312 : 0 : drm_connector_put(conn_state->connector);
313 : 0 : conn_state->crtc = NULL;
314 : : }
315 : :
316 [ # # ]: 0 : if (crtc) {
317 : 0 : crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
318 [ # # ]: 0 : if (IS_ERR(crtc_state))
319 : 0 : return PTR_ERR(crtc_state);
320 : :
321 : 0 : crtc_state->connector_mask |=
322 : 0 : drm_connector_mask(conn_state->connector);
323 : :
324 : 0 : drm_connector_get(conn_state->connector);
325 : 0 : conn_state->crtc = crtc;
326 : :
327 : 0 : 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 : 0 : 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 : 0 : static void set_out_fence_for_crtc(struct drm_atomic_state *state,
341 : : struct drm_crtc *crtc, s32 __user *fence_ptr)
342 : : {
343 : 0 : state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
344 : 0 : }
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 : 0 : static int set_out_fence_for_connector(struct drm_atomic_state *state,
358 : : struct drm_connector *connector,
359 : : s32 __user *fence_ptr)
360 : : {
361 : 0 : unsigned int index = drm_connector_index(connector);
362 : :
363 [ # # ]: 0 : if (!fence_ptr)
364 : : return 0;
365 : :
366 [ # # ]: 0 : if (put_user(-1, fence_ptr))
367 : : return -EFAULT;
368 : :
369 : 0 : state->connectors[index].out_fence_ptr = fence_ptr;
370 : :
371 : 0 : 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 : 0 : 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 : 0 : struct drm_property_blob *new_blob = NULL;
395 : :
396 [ # # ]: 0 : if (blob_id != 0) {
397 : 0 : new_blob = drm_property_lookup_blob(dev, blob_id);
398 [ # # ]: 0 : if (new_blob == NULL)
399 : : return -EINVAL;
400 : :
401 [ # # ]: 0 : if (expected_size > 0 &&
402 [ # # ]: 0 : new_blob->length != expected_size) {
403 : 0 : drm_property_blob_put(new_blob);
404 : 0 : return -EINVAL;
405 : : }
406 [ # # ]: 0 : if (expected_elem_size > 0 &&
407 [ # # ]: 0 : new_blob->length % expected_elem_size != 0) {
408 : 0 : drm_property_blob_put(new_blob);
409 : 0 : return -EINVAL;
410 : : }
411 : : }
412 : :
413 : 0 : *replaced |= drm_property_replace_blob(blob, new_blob);
414 : 0 : drm_property_blob_put(new_blob);
415 : :
416 : 0 : return 0;
417 : : }
418 : :
419 : 0 : 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 : 0 : struct drm_device *dev = crtc->dev;
424 : 0 : struct drm_mode_config *config = &dev->mode_config;
425 : 0 : bool replaced = false;
426 : 0 : int ret;
427 : :
428 [ # # ]: 0 : if (property == config->prop_active)
429 : 0 : state->active = val;
430 [ # # ]: 0 : else if (property == config->prop_mode_id) {
431 : 0 : struct drm_property_blob *mode =
432 : 0 : drm_property_lookup_blob(dev, val);
433 : 0 : ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
434 : 0 : drm_property_blob_put(mode);
435 : 0 : return ret;
436 [ # # ]: 0 : } else if (property == config->prop_vrr_enabled) {
437 : 0 : state->vrr_enabled = val;
438 [ # # ]: 0 : } else if (property == config->degamma_lut_property) {
439 : 0 : ret = drm_atomic_replace_property_blob_from_id(dev,
440 : : &state->degamma_lut,
441 : : val,
442 : : -1, sizeof(struct drm_color_lut),
443 : : &replaced);
444 : 0 : state->color_mgmt_changed |= replaced;
445 : 0 : return ret;
446 [ # # ]: 0 : } else if (property == config->ctm_property) {
447 : 0 : ret = drm_atomic_replace_property_blob_from_id(dev,
448 : : &state->ctm,
449 : : val,
450 : : sizeof(struct drm_color_ctm), -1,
451 : : &replaced);
452 : 0 : state->color_mgmt_changed |= replaced;
453 : 0 : return ret;
454 [ # # ]: 0 : } else if (property == config->gamma_lut_property) {
455 : 0 : ret = drm_atomic_replace_property_blob_from_id(dev,
456 : : &state->gamma_lut,
457 : : val,
458 : : -1, sizeof(struct drm_color_lut),
459 : : &replaced);
460 : 0 : state->color_mgmt_changed |= replaced;
461 : 0 : return ret;
462 [ # # ]: 0 : } else if (property == config->prop_out_fence_ptr) {
463 : 0 : s32 __user *fence_ptr = u64_to_user_ptr(val);
464 : :
465 [ # # ]: 0 : if (!fence_ptr)
466 : : return 0;
467 : :
468 [ # # ]: 0 : if (put_user(-1, fence_ptr))
469 : : return -EFAULT;
470 : :
471 : 0 : set_out_fence_for_crtc(state->state, crtc, fence_ptr);
472 [ # # ]: 0 : } else if (crtc->funcs->atomic_set_property) {
473 : 0 : return crtc->funcs->atomic_set_property(crtc, state, property, val);
474 : : } else {
475 : 0 : DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
476 : : crtc->base.id, crtc->name,
477 : : property->base.id, property->name);
478 : 0 : return -EINVAL;
479 : : }
480 : :
481 : : return 0;
482 : : }
483 : :
484 : : static int
485 : 0 : drm_atomic_crtc_get_property(struct drm_crtc *crtc,
486 : : const struct drm_crtc_state *state,
487 : : struct drm_property *property, uint64_t *val)
488 : : {
489 : 0 : struct drm_device *dev = crtc->dev;
490 : 0 : struct drm_mode_config *config = &dev->mode_config;
491 : :
492 [ # # ]: 0 : if (property == config->prop_active)
493 [ # # ]: 0 : *val = drm_atomic_crtc_effectively_active(state);
494 [ # # ]: 0 : else if (property == config->prop_mode_id)
495 [ # # ]: 0 : *val = (state->mode_blob) ? state->mode_blob->base.id : 0;
496 [ # # ]: 0 : else if (property == config->prop_vrr_enabled)
497 : 0 : *val = state->vrr_enabled;
498 [ # # ]: 0 : else if (property == config->degamma_lut_property)
499 [ # # ]: 0 : *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
500 [ # # ]: 0 : else if (property == config->ctm_property)
501 [ # # ]: 0 : *val = (state->ctm) ? state->ctm->base.id : 0;
502 [ # # ]: 0 : else if (property == config->gamma_lut_property)
503 [ # # ]: 0 : *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
504 [ # # ]: 0 : else if (property == config->prop_out_fence_ptr)
505 : 0 : *val = 0;
506 [ # # ]: 0 : else if (crtc->funcs->atomic_get_property)
507 : 0 : return crtc->funcs->atomic_get_property(crtc, state, property, val);
508 : : else
509 : : return -EINVAL;
510 : :
511 : : return 0;
512 : : }
513 : :
514 : 0 : static int drm_atomic_plane_set_property(struct drm_plane *plane,
515 : : struct drm_plane_state *state, struct drm_file *file_priv,
516 : : struct drm_property *property, uint64_t val)
517 : : {
518 : 0 : struct drm_device *dev = plane->dev;
519 : 0 : struct drm_mode_config *config = &dev->mode_config;
520 : 0 : bool replaced = false;
521 : 0 : int ret;
522 : :
523 [ # # ]: 0 : if (property == config->prop_fb_id) {
524 : 0 : struct drm_framebuffer *fb;
525 : 0 : fb = drm_framebuffer_lookup(dev, file_priv, val);
526 : 0 : drm_atomic_set_fb_for_plane(state, fb);
527 [ # # ]: 0 : if (fb)
528 : 0 : drm_framebuffer_put(fb);
529 [ # # ]: 0 : } else if (property == config->prop_in_fence_fd) {
530 [ # # ]: 0 : if (state->fence)
531 : : return -EINVAL;
532 : :
533 [ # # ]: 0 : if (U642I64(val) == -1)
534 : : return 0;
535 : :
536 : 0 : state->fence = sync_file_get_fence(val);
537 [ # # ]: 0 : if (!state->fence)
538 : 0 : return -EINVAL;
539 : :
540 [ # # ]: 0 : } else if (property == config->prop_crtc_id) {
541 : 0 : struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val);
542 [ # # ]: 0 : if (val && !crtc)
543 : : return -EACCES;
544 : 0 : return drm_atomic_set_crtc_for_plane(state, crtc);
545 [ # # ]: 0 : } else if (property == config->prop_crtc_x) {
546 : 0 : state->crtc_x = U642I64(val);
547 [ # # ]: 0 : } else if (property == config->prop_crtc_y) {
548 : 0 : state->crtc_y = U642I64(val);
549 [ # # ]: 0 : } else if (property == config->prop_crtc_w) {
550 : 0 : state->crtc_w = val;
551 [ # # ]: 0 : } else if (property == config->prop_crtc_h) {
552 : 0 : state->crtc_h = val;
553 [ # # ]: 0 : } else if (property == config->prop_src_x) {
554 : 0 : state->src_x = val;
555 [ # # ]: 0 : } else if (property == config->prop_src_y) {
556 : 0 : state->src_y = val;
557 [ # # ]: 0 : } else if (property == config->prop_src_w) {
558 : 0 : state->src_w = val;
559 [ # # ]: 0 : } else if (property == config->prop_src_h) {
560 : 0 : state->src_h = val;
561 [ # # ]: 0 : } else if (property == plane->alpha_property) {
562 : 0 : state->alpha = val;
563 [ # # ]: 0 : } else if (property == plane->blend_mode_property) {
564 : 0 : state->pixel_blend_mode = val;
565 [ # # ]: 0 : } else if (property == plane->rotation_property) {
566 [ # # # # ]: 0 : if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
567 : 0 : DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
568 : : plane->base.id, plane->name, val);
569 : 0 : return -EINVAL;
570 : : }
571 : 0 : state->rotation = val;
572 [ # # ]: 0 : } else if (property == plane->zpos_property) {
573 : 0 : state->zpos = val;
574 [ # # ]: 0 : } else if (property == plane->color_encoding_property) {
575 : 0 : state->color_encoding = val;
576 [ # # ]: 0 : } else if (property == plane->color_range_property) {
577 : 0 : state->color_range = val;
578 [ # # ]: 0 : } else if (property == config->prop_fb_damage_clips) {
579 : 0 : ret = drm_atomic_replace_property_blob_from_id(dev,
580 : : &state->fb_damage_clips,
581 : : val,
582 : : -1,
583 : : sizeof(struct drm_rect),
584 : : &replaced);
585 : 0 : return ret;
586 [ # # ]: 0 : } else if (plane->funcs->atomic_set_property) {
587 : 0 : return plane->funcs->atomic_set_property(plane, state,
588 : : property, val);
589 : : } else {
590 : 0 : DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
591 : : plane->base.id, plane->name,
592 : : property->base.id, property->name);
593 : 0 : return -EINVAL;
594 : : }
595 : :
596 : : return 0;
597 : : }
598 : :
599 : : static int
600 : 0 : drm_atomic_plane_get_property(struct drm_plane *plane,
601 : : const struct drm_plane_state *state,
602 : : struct drm_property *property, uint64_t *val)
603 : : {
604 : 0 : struct drm_device *dev = plane->dev;
605 : 0 : struct drm_mode_config *config = &dev->mode_config;
606 : :
607 [ # # ]: 0 : if (property == config->prop_fb_id) {
608 [ # # ]: 0 : *val = (state->fb) ? state->fb->base.id : 0;
609 [ # # ]: 0 : } else if (property == config->prop_in_fence_fd) {
610 : 0 : *val = -1;
611 [ # # ]: 0 : } else if (property == config->prop_crtc_id) {
612 [ # # ]: 0 : *val = (state->crtc) ? state->crtc->base.id : 0;
613 [ # # ]: 0 : } else if (property == config->prop_crtc_x) {
614 : 0 : *val = I642U64(state->crtc_x);
615 [ # # ]: 0 : } else if (property == config->prop_crtc_y) {
616 : 0 : *val = I642U64(state->crtc_y);
617 [ # # ]: 0 : } else if (property == config->prop_crtc_w) {
618 : 0 : *val = state->crtc_w;
619 [ # # ]: 0 : } else if (property == config->prop_crtc_h) {
620 : 0 : *val = state->crtc_h;
621 [ # # ]: 0 : } else if (property == config->prop_src_x) {
622 : 0 : *val = state->src_x;
623 [ # # ]: 0 : } else if (property == config->prop_src_y) {
624 : 0 : *val = state->src_y;
625 [ # # ]: 0 : } else if (property == config->prop_src_w) {
626 : 0 : *val = state->src_w;
627 [ # # ]: 0 : } else if (property == config->prop_src_h) {
628 : 0 : *val = state->src_h;
629 [ # # ]: 0 : } else if (property == plane->alpha_property) {
630 : 0 : *val = state->alpha;
631 [ # # ]: 0 : } else if (property == plane->blend_mode_property) {
632 : 0 : *val = state->pixel_blend_mode;
633 [ # # ]: 0 : } else if (property == plane->rotation_property) {
634 : 0 : *val = state->rotation;
635 [ # # ]: 0 : } else if (property == plane->zpos_property) {
636 : 0 : *val = state->zpos;
637 [ # # ]: 0 : } else if (property == plane->color_encoding_property) {
638 : 0 : *val = state->color_encoding;
639 [ # # ]: 0 : } else if (property == plane->color_range_property) {
640 : 0 : *val = state->color_range;
641 [ # # ]: 0 : } else if (property == config->prop_fb_damage_clips) {
642 : 0 : *val = (state->fb_damage_clips) ?
643 [ # # ]: 0 : state->fb_damage_clips->base.id : 0;
644 [ # # ]: 0 : } else if (plane->funcs->atomic_get_property) {
645 : 0 : return plane->funcs->atomic_get_property(plane, state, property, val);
646 : : } else {
647 : : return -EINVAL;
648 : : }
649 : :
650 : : return 0;
651 : : }
652 : :
653 : 0 : static int drm_atomic_set_writeback_fb_for_connector(
654 : : struct drm_connector_state *conn_state,
655 : : struct drm_framebuffer *fb)
656 : : {
657 : 0 : int ret;
658 : :
659 : 0 : ret = drm_writeback_set_fb(conn_state, fb);
660 [ # # ]: 0 : if (ret < 0)
661 : : return ret;
662 : :
663 [ # # ]: 0 : if (fb)
664 : 0 : DRM_DEBUG_ATOMIC("Set [FB:%d] for connector state %p\n",
665 : : fb->base.id, conn_state);
666 : : else
667 : 0 : DRM_DEBUG_ATOMIC("Set [NOFB] for connector state %p\n",
668 : : conn_state);
669 : :
670 : : return 0;
671 : : }
672 : :
673 : 0 : static int drm_atomic_connector_set_property(struct drm_connector *connector,
674 : : struct drm_connector_state *state, struct drm_file *file_priv,
675 : : struct drm_property *property, uint64_t val)
676 : : {
677 : 0 : struct drm_device *dev = connector->dev;
678 : 0 : struct drm_mode_config *config = &dev->mode_config;
679 : 0 : bool replaced = false;
680 : 0 : int ret;
681 : :
682 [ # # ]: 0 : if (property == config->prop_crtc_id) {
683 : 0 : struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val);
684 [ # # ]: 0 : if (val && !crtc)
685 : : return -EACCES;
686 : 0 : return drm_atomic_set_crtc_for_connector(state, crtc);
687 [ # # ]: 0 : } else if (property == config->dpms_property) {
688 : : /* setting DPMS property requires special handling, which
689 : : * is done in legacy setprop path for us. Disallow (for
690 : : * now?) atomic writes to DPMS property:
691 : : */
692 : : return -EINVAL;
693 [ # # ]: 0 : } else if (property == config->tv_select_subconnector_property) {
694 : 0 : state->tv.subconnector = val;
695 [ # # ]: 0 : } else if (property == config->tv_left_margin_property) {
696 : 0 : state->tv.margins.left = val;
697 [ # # ]: 0 : } else if (property == config->tv_right_margin_property) {
698 : 0 : state->tv.margins.right = val;
699 [ # # ]: 0 : } else if (property == config->tv_top_margin_property) {
700 : 0 : state->tv.margins.top = val;
701 [ # # ]: 0 : } else if (property == config->tv_bottom_margin_property) {
702 : 0 : state->tv.margins.bottom = val;
703 [ # # ]: 0 : } else if (property == config->tv_mode_property) {
704 : 0 : state->tv.mode = val;
705 [ # # ]: 0 : } else if (property == config->tv_brightness_property) {
706 : 0 : state->tv.brightness = val;
707 [ # # ]: 0 : } else if (property == config->tv_contrast_property) {
708 : 0 : state->tv.contrast = val;
709 [ # # ]: 0 : } else if (property == config->tv_flicker_reduction_property) {
710 : 0 : state->tv.flicker_reduction = val;
711 [ # # ]: 0 : } else if (property == config->tv_overscan_property) {
712 : 0 : state->tv.overscan = val;
713 [ # # ]: 0 : } else if (property == config->tv_saturation_property) {
714 : 0 : state->tv.saturation = val;
715 [ # # ]: 0 : } else if (property == config->tv_hue_property) {
716 : 0 : state->tv.hue = val;
717 [ # # ]: 0 : } else if (property == config->link_status_property) {
718 : : /* Never downgrade from GOOD to BAD on userspace's request here,
719 : : * only hw issues can do that.
720 : : *
721 : : * For an atomic property the userspace doesn't need to be able
722 : : * to understand all the properties, but needs to be able to
723 : : * restore the state it wants on VT switch. So if the userspace
724 : : * tries to change the link_status from GOOD to BAD, driver
725 : : * silently rejects it and returns a 0. This prevents userspace
726 : : * from accidently breaking the display when it restores the
727 : : * state.
728 : : */
729 [ # # ]: 0 : if (state->link_status != DRM_LINK_STATUS_GOOD)
730 : 0 : state->link_status = val;
731 [ # # ]: 0 : } else if (property == config->hdr_output_metadata_property) {
732 : 0 : ret = drm_atomic_replace_property_blob_from_id(dev,
733 : : &state->hdr_output_metadata,
734 : : val,
735 : : sizeof(struct hdr_output_metadata), -1,
736 : : &replaced);
737 : 0 : return ret;
738 [ # # ]: 0 : } else if (property == config->aspect_ratio_property) {
739 : 0 : state->picture_aspect_ratio = val;
740 [ # # ]: 0 : } else if (property == config->content_type_property) {
741 : 0 : state->content_type = val;
742 [ # # ]: 0 : } else if (property == connector->scaling_mode_property) {
743 : 0 : state->scaling_mode = val;
744 [ # # ]: 0 : } else if (property == config->content_protection_property) {
745 [ # # ]: 0 : if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
746 : 0 : DRM_DEBUG_KMS("only drivers can set CP Enabled\n");
747 : 0 : return -EINVAL;
748 : : }
749 : 0 : state->content_protection = val;
750 [ # # ]: 0 : } else if (property == config->hdcp_content_type_property) {
751 : 0 : state->hdcp_content_type = val;
752 [ # # ]: 0 : } else if (property == connector->colorspace_property) {
753 : 0 : state->colorspace = val;
754 [ # # ]: 0 : } else if (property == config->writeback_fb_id_property) {
755 : 0 : struct drm_framebuffer *fb;
756 : 0 : int ret;
757 : 0 : fb = drm_framebuffer_lookup(dev, file_priv, val);
758 : 0 : ret = drm_atomic_set_writeback_fb_for_connector(state, fb);
759 [ # # ]: 0 : if (fb)
760 : 0 : drm_framebuffer_put(fb);
761 : 0 : return ret;
762 [ # # ]: 0 : } else if (property == config->writeback_out_fence_ptr_property) {
763 : 0 : s32 __user *fence_ptr = u64_to_user_ptr(val);
764 : :
765 [ # # ]: 0 : return set_out_fence_for_connector(state->state, connector,
766 : : fence_ptr);
767 [ # # ]: 0 : } else if (property == connector->max_bpc_property) {
768 : 0 : state->max_requested_bpc = val;
769 [ # # ]: 0 : } else if (connector->funcs->atomic_set_property) {
770 : 0 : return connector->funcs->atomic_set_property(connector,
771 : : state, property, val);
772 : : } else {
773 : 0 : DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
774 : : connector->base.id, connector->name,
775 : : property->base.id, property->name);
776 : 0 : return -EINVAL;
777 : : }
778 : :
779 : : return 0;
780 : : }
781 : :
782 : : static int
783 : 0 : drm_atomic_connector_get_property(struct drm_connector *connector,
784 : : const struct drm_connector_state *state,
785 : : struct drm_property *property, uint64_t *val)
786 : : {
787 : 0 : struct drm_device *dev = connector->dev;
788 : 0 : struct drm_mode_config *config = &dev->mode_config;
789 : :
790 [ # # ]: 0 : if (property == config->prop_crtc_id) {
791 [ # # ]: 0 : *val = (state->crtc) ? state->crtc->base.id : 0;
792 [ # # ]: 0 : } else if (property == config->dpms_property) {
793 [ # # # # ]: 0 : if (state->crtc && state->crtc->state->self_refresh_active)
794 : 0 : *val = DRM_MODE_DPMS_ON;
795 : : else
796 : 0 : *val = connector->dpms;
797 [ # # ]: 0 : } else if (property == config->tv_select_subconnector_property) {
798 : 0 : *val = state->tv.subconnector;
799 [ # # ]: 0 : } else if (property == config->tv_left_margin_property) {
800 : 0 : *val = state->tv.margins.left;
801 [ # # ]: 0 : } else if (property == config->tv_right_margin_property) {
802 : 0 : *val = state->tv.margins.right;
803 [ # # ]: 0 : } else if (property == config->tv_top_margin_property) {
804 : 0 : *val = state->tv.margins.top;
805 [ # # ]: 0 : } else if (property == config->tv_bottom_margin_property) {
806 : 0 : *val = state->tv.margins.bottom;
807 [ # # ]: 0 : } else if (property == config->tv_mode_property) {
808 : 0 : *val = state->tv.mode;
809 [ # # ]: 0 : } else if (property == config->tv_brightness_property) {
810 : 0 : *val = state->tv.brightness;
811 [ # # ]: 0 : } else if (property == config->tv_contrast_property) {
812 : 0 : *val = state->tv.contrast;
813 [ # # ]: 0 : } else if (property == config->tv_flicker_reduction_property) {
814 : 0 : *val = state->tv.flicker_reduction;
815 [ # # ]: 0 : } else if (property == config->tv_overscan_property) {
816 : 0 : *val = state->tv.overscan;
817 [ # # ]: 0 : } else if (property == config->tv_saturation_property) {
818 : 0 : *val = state->tv.saturation;
819 [ # # ]: 0 : } else if (property == config->tv_hue_property) {
820 : 0 : *val = state->tv.hue;
821 [ # # ]: 0 : } else if (property == config->link_status_property) {
822 : 0 : *val = state->link_status;
823 [ # # ]: 0 : } else if (property == config->aspect_ratio_property) {
824 : 0 : *val = state->picture_aspect_ratio;
825 [ # # ]: 0 : } else if (property == config->content_type_property) {
826 : 0 : *val = state->content_type;
827 [ # # ]: 0 : } else if (property == connector->colorspace_property) {
828 : 0 : *val = state->colorspace;
829 [ # # ]: 0 : } else if (property == connector->scaling_mode_property) {
830 : 0 : *val = state->scaling_mode;
831 [ # # ]: 0 : } else if (property == config->hdr_output_metadata_property) {
832 : 0 : *val = state->hdr_output_metadata ?
833 [ # # ]: 0 : state->hdr_output_metadata->base.id : 0;
834 [ # # ]: 0 : } else if (property == config->content_protection_property) {
835 : 0 : *val = state->content_protection;
836 [ # # ]: 0 : } else if (property == config->hdcp_content_type_property) {
837 : 0 : *val = state->hdcp_content_type;
838 [ # # ]: 0 : } else if (property == config->writeback_fb_id_property) {
839 : : /* Writeback framebuffer is one-shot, write and forget */
840 : 0 : *val = 0;
841 [ # # ]: 0 : } else if (property == config->writeback_out_fence_ptr_property) {
842 : 0 : *val = 0;
843 [ # # ]: 0 : } else if (property == connector->max_bpc_property) {
844 : 0 : *val = state->max_requested_bpc;
845 [ # # ]: 0 : } else if (connector->funcs->atomic_get_property) {
846 : 0 : return connector->funcs->atomic_get_property(connector,
847 : : state, property, val);
848 : : } else {
849 : : return -EINVAL;
850 : : }
851 : :
852 : : return 0;
853 : : }
854 : :
855 : 0 : int drm_atomic_get_property(struct drm_mode_object *obj,
856 : : struct drm_property *property, uint64_t *val)
857 : : {
858 : 0 : struct drm_device *dev = property->dev;
859 : 0 : int ret;
860 : :
861 [ # # # # ]: 0 : switch (obj->type) {
862 : 0 : case DRM_MODE_OBJECT_CONNECTOR: {
863 : 0 : struct drm_connector *connector = obj_to_connector(obj);
864 [ # # ]: 0 : WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
865 : 0 : ret = drm_atomic_connector_get_property(connector,
866 : 0 : connector->state, property, val);
867 : 0 : break;
868 : : }
869 : 0 : case DRM_MODE_OBJECT_CRTC: {
870 : 0 : struct drm_crtc *crtc = obj_to_crtc(obj);
871 [ # # ]: 0 : WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
872 : 0 : ret = drm_atomic_crtc_get_property(crtc,
873 : 0 : crtc->state, property, val);
874 : 0 : break;
875 : : }
876 : 0 : case DRM_MODE_OBJECT_PLANE: {
877 : 0 : struct drm_plane *plane = obj_to_plane(obj);
878 [ # # ]: 0 : WARN_ON(!drm_modeset_is_locked(&plane->mutex));
879 : 0 : ret = drm_atomic_plane_get_property(plane,
880 : 0 : plane->state, property, val);
881 : 0 : break;
882 : : }
883 : : default:
884 : : ret = -EINVAL;
885 : : break;
886 : : }
887 : :
888 : 0 : return ret;
889 : : }
890 : :
891 : : /*
892 : : * The big monster ioctl
893 : : */
894 : :
895 : : static struct drm_pending_vblank_event *create_vblank_event(
896 : : struct drm_crtc *crtc, uint64_t user_data)
897 : : {
898 : : struct drm_pending_vblank_event *e = NULL;
899 : :
900 : : e = kzalloc(sizeof *e, GFP_KERNEL);
901 : : if (!e)
902 : : return NULL;
903 : :
904 : : e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
905 : : e->event.base.length = sizeof(e->event);
906 : : e->event.vbl.crtc_id = crtc->base.id;
907 : : e->event.vbl.user_data = user_data;
908 : :
909 : : return e;
910 : : }
911 : :
912 : 0 : int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
913 : : struct drm_connector *connector,
914 : : int mode)
915 : : {
916 : 0 : struct drm_connector *tmp_connector;
917 : 0 : struct drm_connector_state *new_conn_state;
918 : 0 : struct drm_crtc *crtc;
919 : 0 : struct drm_crtc_state *crtc_state;
920 : 0 : int i, ret, old_mode = connector->dpms;
921 : 0 : bool active = false;
922 : :
923 : 0 : ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
924 : : state->acquire_ctx);
925 [ # # ]: 0 : if (ret)
926 : : return ret;
927 : :
928 [ # # ]: 0 : if (mode != DRM_MODE_DPMS_ON)
929 : 0 : mode = DRM_MODE_DPMS_OFF;
930 : 0 : connector->dpms = mode;
931 : :
932 : 0 : crtc = connector->state->crtc;
933 [ # # ]: 0 : if (!crtc)
934 : 0 : goto out;
935 : 0 : ret = drm_atomic_add_affected_connectors(state, crtc);
936 [ # # ]: 0 : if (ret)
937 : 0 : goto out;
938 : :
939 : 0 : crtc_state = drm_atomic_get_crtc_state(state, crtc);
940 [ # # ]: 0 : if (IS_ERR(crtc_state)) {
941 : 0 : ret = PTR_ERR(crtc_state);
942 : 0 : goto out;
943 : : }
944 : :
945 [ # # # # ]: 0 : for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) {
946 [ # # ]: 0 : if (new_conn_state->crtc != crtc)
947 : 0 : continue;
948 [ # # ]: 0 : if (tmp_connector->dpms == DRM_MODE_DPMS_ON) {
949 : : active = true;
950 : : break;
951 : : }
952 : : }
953 : :
954 : 0 : crtc_state->active = active;
955 : 0 : ret = drm_atomic_commit(state);
956 : 0 : out:
957 [ # # ]: 0 : if (ret != 0)
958 : 0 : connector->dpms = old_mode;
959 : : return ret;
960 : : }
961 : :
962 : 0 : int drm_atomic_set_property(struct drm_atomic_state *state,
963 : : struct drm_file *file_priv,
964 : : struct drm_mode_object *obj,
965 : : struct drm_property *prop,
966 : : uint64_t prop_value)
967 : : {
968 : 0 : struct drm_mode_object *ref;
969 : 0 : int ret;
970 : :
971 [ # # ]: 0 : if (!drm_property_change_valid_get(prop, prop_value, &ref))
972 : : return -EINVAL;
973 : :
974 [ # # # # ]: 0 : switch (obj->type) {
975 : 0 : case DRM_MODE_OBJECT_CONNECTOR: {
976 : 0 : struct drm_connector *connector = obj_to_connector(obj);
977 : 0 : struct drm_connector_state *connector_state;
978 : :
979 : 0 : connector_state = drm_atomic_get_connector_state(state, connector);
980 [ # # ]: 0 : if (IS_ERR(connector_state)) {
981 : 0 : ret = PTR_ERR(connector_state);
982 : 0 : break;
983 : : }
984 : :
985 : 0 : ret = drm_atomic_connector_set_property(connector,
986 : : connector_state, file_priv,
987 : : prop, prop_value);
988 : 0 : break;
989 : : }
990 : 0 : case DRM_MODE_OBJECT_CRTC: {
991 : 0 : struct drm_crtc *crtc = obj_to_crtc(obj);
992 : 0 : struct drm_crtc_state *crtc_state;
993 : :
994 : 0 : crtc_state = drm_atomic_get_crtc_state(state, crtc);
995 [ # # ]: 0 : if (IS_ERR(crtc_state)) {
996 : 0 : ret = PTR_ERR(crtc_state);
997 : 0 : break;
998 : : }
999 : :
1000 : 0 : ret = drm_atomic_crtc_set_property(crtc,
1001 : : crtc_state, prop, prop_value);
1002 : 0 : break;
1003 : : }
1004 : 0 : case DRM_MODE_OBJECT_PLANE: {
1005 : 0 : struct drm_plane *plane = obj_to_plane(obj);
1006 : 0 : struct drm_plane_state *plane_state;
1007 : :
1008 : 0 : plane_state = drm_atomic_get_plane_state(state, plane);
1009 [ # # ]: 0 : if (IS_ERR(plane_state)) {
1010 : 0 : ret = PTR_ERR(plane_state);
1011 : 0 : break;
1012 : : }
1013 : :
1014 : 0 : ret = drm_atomic_plane_set_property(plane,
1015 : : plane_state, file_priv,
1016 : : prop, prop_value);
1017 : 0 : break;
1018 : : }
1019 : : default:
1020 : : ret = -EINVAL;
1021 : : break;
1022 : : }
1023 : :
1024 : 0 : drm_property_change_valid_put(prop, ref);
1025 : 0 : return ret;
1026 : : }
1027 : :
1028 : : /**
1029 : : * DOC: explicit fencing properties
1030 : : *
1031 : : * Explicit fencing allows userspace to control the buffer synchronization
1032 : : * between devices. A Fence or a group of fences are transfered to/from
1033 : : * userspace using Sync File fds and there are two DRM properties for that.
1034 : : * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
1035 : : * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
1036 : : *
1037 : : * As a contrast, with implicit fencing the kernel keeps track of any
1038 : : * ongoing rendering, and automatically ensures that the atomic update waits
1039 : : * for any pending rendering to complete. For shared buffers represented with
1040 : : * a &struct dma_buf this is tracked in &struct dma_resv.
1041 : : * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
1042 : : * whereas explicit fencing is what Android wants.
1043 : : *
1044 : : * "IN_FENCE_FD”:
1045 : : * Use this property to pass a fence that DRM should wait on before
1046 : : * proceeding with the Atomic Commit request and show the framebuffer for
1047 : : * the plane on the screen. The fence can be either a normal fence or a
1048 : : * merged one, the sync_file framework will handle both cases and use a
1049 : : * fence_array if a merged fence is received. Passing -1 here means no
1050 : : * fences to wait on.
1051 : : *
1052 : : * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
1053 : : * it will only check if the Sync File is a valid one.
1054 : : *
1055 : : * On the driver side the fence is stored on the @fence parameter of
1056 : : * &struct drm_plane_state. Drivers which also support implicit fencing
1057 : : * should set the implicit fence using drm_atomic_set_fence_for_plane(),
1058 : : * to make sure there's consistent behaviour between drivers in precedence
1059 : : * of implicit vs. explicit fencing.
1060 : : *
1061 : : * "OUT_FENCE_PTR”:
1062 : : * Use this property to pass a file descriptor pointer to DRM. Once the
1063 : : * Atomic Commit request call returns OUT_FENCE_PTR will be filled with
1064 : : * the file descriptor number of a Sync File. This Sync File contains the
1065 : : * CRTC fence that will be signaled when all framebuffers present on the
1066 : : * Atomic Commit * request for that given CRTC are scanned out on the
1067 : : * screen.
1068 : : *
1069 : : * The Atomic Commit request fails if a invalid pointer is passed. If the
1070 : : * Atomic Commit request fails for any other reason the out fence fd
1071 : : * returned will be -1. On a Atomic Commit with the
1072 : : * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
1073 : : *
1074 : : * Note that out-fences don't have a special interface to drivers and are
1075 : : * internally represented by a &struct drm_pending_vblank_event in struct
1076 : : * &drm_crtc_state, which is also used by the nonblocking atomic commit
1077 : : * helpers and for the DRM event handling for existing userspace.
1078 : : */
1079 : :
1080 : : struct drm_out_fence_state {
1081 : : s32 __user *out_fence_ptr;
1082 : : struct sync_file *sync_file;
1083 : : int fd;
1084 : : };
1085 : :
1086 : 0 : static int setup_out_fence(struct drm_out_fence_state *fence_state,
1087 : : struct dma_fence *fence)
1088 : : {
1089 : 0 : fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
1090 [ # # ]: 0 : if (fence_state->fd < 0)
1091 : : return fence_state->fd;
1092 : :
1093 [ # # ]: 0 : if (put_user(fence_state->fd, fence_state->out_fence_ptr))
1094 : : return -EFAULT;
1095 : :
1096 : 0 : fence_state->sync_file = sync_file_create(fence);
1097 [ # # ]: 0 : if (!fence_state->sync_file)
1098 : 0 : return -ENOMEM;
1099 : :
1100 : : return 0;
1101 : : }
1102 : :
1103 : : static int prepare_signaling(struct drm_device *dev,
1104 : : struct drm_atomic_state *state,
1105 : : struct drm_mode_atomic *arg,
1106 : : struct drm_file *file_priv,
1107 : : struct drm_out_fence_state **fence_state,
1108 : : unsigned int *num_fences)
1109 : : {
1110 : : struct drm_crtc *crtc;
1111 : : struct drm_crtc_state *crtc_state;
1112 : : struct drm_connector *conn;
1113 : : struct drm_connector_state *conn_state;
1114 : : int i, c = 0, ret;
1115 : :
1116 : : if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
1117 : : return 0;
1118 : :
1119 : : for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1120 : : s32 __user *fence_ptr;
1121 : :
1122 : : fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc);
1123 : :
1124 : : if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
1125 : : struct drm_pending_vblank_event *e;
1126 : :
1127 : : e = create_vblank_event(crtc, arg->user_data);
1128 : : if (!e)
1129 : : return -ENOMEM;
1130 : :
1131 : : crtc_state->event = e;
1132 : : }
1133 : :
1134 : : if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
1135 : : struct drm_pending_vblank_event *e = crtc_state->event;
1136 : :
1137 : : if (!file_priv)
1138 : : continue;
1139 : :
1140 : : ret = drm_event_reserve_init(dev, file_priv, &e->base,
1141 : : &e->event.base);
1142 : : if (ret) {
1143 : : kfree(e);
1144 : : crtc_state->event = NULL;
1145 : : return ret;
1146 : : }
1147 : : }
1148 : :
1149 : : if (fence_ptr) {
1150 : : struct dma_fence *fence;
1151 : : struct drm_out_fence_state *f;
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 : : fence = drm_crtc_create_fence(crtc);
1164 : : if (!fence)
1165 : : return -ENOMEM;
1166 : :
1167 : : ret = setup_out_fence(&f[(*num_fences)++], fence);
1168 : : if (ret) {
1169 : : dma_fence_put(fence);
1170 : : return ret;
1171 : : }
1172 : :
1173 : : crtc_state->event->base.fence = fence;
1174 : : }
1175 : :
1176 : : c++;
1177 : : }
1178 : :
1179 : : for_each_new_connector_in_state(state, conn, conn_state, i) {
1180 : : struct drm_writeback_connector *wb_conn;
1181 : : struct drm_out_fence_state *f;
1182 : : struct dma_fence *fence;
1183 : : s32 __user *fence_ptr;
1184 : :
1185 : : if (!conn_state->writeback_job)
1186 : : continue;
1187 : :
1188 : : fence_ptr = get_out_fence_for_connector(state, conn);
1189 : : if (!fence_ptr)
1190 : : continue;
1191 : :
1192 : : f = krealloc(*fence_state, sizeof(**fence_state) *
1193 : : (*num_fences + 1), GFP_KERNEL);
1194 : : if (!f)
1195 : : return -ENOMEM;
1196 : :
1197 : : memset(&f[*num_fences], 0, sizeof(*f));
1198 : :
1199 : : f[*num_fences].out_fence_ptr = fence_ptr;
1200 : : *fence_state = f;
1201 : :
1202 : : wb_conn = drm_connector_to_writeback(conn);
1203 : : fence = drm_writeback_get_out_fence(wb_conn);
1204 : : if (!fence)
1205 : : return -ENOMEM;
1206 : :
1207 : : ret = setup_out_fence(&f[(*num_fences)++], fence);
1208 : : if (ret) {
1209 : : dma_fence_put(fence);
1210 : : return ret;
1211 : : }
1212 : :
1213 : : conn_state->writeback_job->out_fence = fence;
1214 : : }
1215 : :
1216 : : /*
1217 : : * Having this flag means user mode pends on event which will never
1218 : : * reach due to lack of at least one CRTC for signaling
1219 : : */
1220 : : if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
1221 : : return -EINVAL;
1222 : :
1223 : : return 0;
1224 : : }
1225 : :
1226 : 0 : static void complete_signaling(struct drm_device *dev,
1227 : : struct drm_atomic_state *state,
1228 : : struct drm_out_fence_state *fence_state,
1229 : : unsigned int num_fences,
1230 : : bool install_fds)
1231 : : {
1232 : 0 : struct drm_crtc *crtc;
1233 : 0 : struct drm_crtc_state *crtc_state;
1234 : 0 : int i;
1235 : :
1236 [ # # ]: 0 : if (install_fds) {
1237 [ # # ]: 0 : for (i = 0; i < num_fences; i++)
1238 : 0 : fd_install(fence_state[i].fd,
1239 : 0 : fence_state[i].sync_file->file);
1240 : :
1241 : 0 : kfree(fence_state);
1242 : 0 : return;
1243 : : }
1244 : :
1245 [ # # # # ]: 0 : for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1246 : 0 : struct drm_pending_vblank_event *event = crtc_state->event;
1247 : : /*
1248 : : * Free the allocated event. drm_atomic_helper_setup_commit
1249 : : * can allocate an event too, so only free it if it's ours
1250 : : * to prevent a double free in drm_atomic_state_clear.
1251 : : */
1252 [ # # # # : 0 : if (event && (event->base.fence || event->base.file_priv)) {
# # ]
1253 : 0 : drm_event_cancel_free(dev, &event->base);
1254 : 0 : crtc_state->event = NULL;
1255 : : }
1256 : : }
1257 : :
1258 [ # # ]: 0 : if (!fence_state)
1259 : : return;
1260 : :
1261 [ # # ]: 0 : for (i = 0; i < num_fences; i++) {
1262 [ # # ]: 0 : if (fence_state[i].sync_file)
1263 : 0 : fput(fence_state[i].sync_file->file);
1264 [ # # ]: 0 : if (fence_state[i].fd >= 0)
1265 : 0 : put_unused_fd(fence_state[i].fd);
1266 : :
1267 : : /* If this fails log error to the user */
1268 [ # # ]: 0 : if (fence_state[i].out_fence_ptr &&
1269 [ # # ]: 0 : put_user(-1, fence_state[i].out_fence_ptr))
1270 : 0 : DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
1271 : : }
1272 : :
1273 : 0 : kfree(fence_state);
1274 : : }
1275 : :
1276 : 0 : int drm_mode_atomic_ioctl(struct drm_device *dev,
1277 : : void *data, struct drm_file *file_priv)
1278 : : {
1279 : 0 : struct drm_mode_atomic *arg = data;
1280 : 0 : uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
1281 : 0 : uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
1282 : 0 : uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
1283 : 0 : uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
1284 : 0 : unsigned int copied_objs, copied_props;
1285 : 0 : struct drm_atomic_state *state;
1286 : 0 : struct drm_modeset_acquire_ctx ctx;
1287 : 0 : struct drm_out_fence_state *fence_state;
1288 : 0 : int ret = 0;
1289 : 0 : unsigned int i, j, num_fences;
1290 : :
1291 : : /* disallow for drivers not supporting atomic: */
1292 [ # # ]: 0 : if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
1293 : : return -EOPNOTSUPP;
1294 : :
1295 : : /* disallow for userspace that has not enabled atomic cap (even
1296 : : * though this may be a bit overkill, since legacy userspace
1297 : : * wouldn't know how to call this ioctl)
1298 : : */
1299 [ # # ]: 0 : if (!file_priv->atomic)
1300 : : return -EINVAL;
1301 : :
1302 [ # # ]: 0 : if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
1303 : : return -EINVAL;
1304 : :
1305 [ # # ]: 0 : if (arg->reserved)
1306 : : return -EINVAL;
1307 : :
1308 [ # # ]: 0 : if (arg->flags & DRM_MODE_PAGE_FLIP_ASYNC)
1309 : : return -EINVAL;
1310 : :
1311 : : /* can't test and expect an event at the same time. */
1312 [ # # ]: 0 : if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
1313 : : (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
1314 : : return -EINVAL;
1315 : :
1316 : 0 : state = drm_atomic_state_alloc(dev);
1317 [ # # ]: 0 : if (!state)
1318 : : return -ENOMEM;
1319 : :
1320 : 0 : drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
1321 : 0 : state->acquire_ctx = &ctx;
1322 : 0 : state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
1323 : :
1324 : 0 : retry:
1325 : 0 : copied_objs = 0;
1326 : 0 : copied_props = 0;
1327 : 0 : fence_state = NULL;
1328 : 0 : num_fences = 0;
1329 : :
1330 [ # # ]: 0 : for (i = 0; i < arg->count_objs; i++) {
1331 : 0 : uint32_t obj_id, count_props;
1332 : 0 : struct drm_mode_object *obj;
1333 : :
1334 [ # # ]: 0 : if (get_user(obj_id, objs_ptr + copied_objs)) {
1335 : 0 : ret = -EFAULT;
1336 : 0 : goto out;
1337 : : }
1338 : :
1339 : 0 : obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY);
1340 [ # # ]: 0 : if (!obj) {
1341 : 0 : ret = -ENOENT;
1342 : 0 : goto out;
1343 : : }
1344 : :
1345 [ # # ]: 0 : if (!obj->properties) {
1346 : 0 : drm_mode_object_put(obj);
1347 : 0 : ret = -ENOENT;
1348 : 0 : goto out;
1349 : : }
1350 : :
1351 [ # # ]: 0 : if (get_user(count_props, count_props_ptr + copied_objs)) {
1352 : 0 : drm_mode_object_put(obj);
1353 : 0 : ret = -EFAULT;
1354 : 0 : goto out;
1355 : : }
1356 : :
1357 : 0 : copied_objs++;
1358 : :
1359 [ # # ]: 0 : for (j = 0; j < count_props; j++) {
1360 : 0 : uint32_t prop_id;
1361 : 0 : uint64_t prop_value;
1362 : 0 : struct drm_property *prop;
1363 : :
1364 [ # # ]: 0 : if (get_user(prop_id, props_ptr + copied_props)) {
1365 : 0 : drm_mode_object_put(obj);
1366 : 0 : ret = -EFAULT;
1367 : 0 : goto out;
1368 : : }
1369 : :
1370 : 0 : prop = drm_mode_obj_find_prop_id(obj, prop_id);
1371 [ # # ]: 0 : if (!prop) {
1372 : 0 : drm_mode_object_put(obj);
1373 : 0 : ret = -ENOENT;
1374 : 0 : goto out;
1375 : : }
1376 : :
1377 [ # # ]: 0 : if (copy_from_user(&prop_value,
1378 : 0 : prop_values_ptr + copied_props,
1379 : : sizeof(prop_value))) {
1380 : 0 : drm_mode_object_put(obj);
1381 : 0 : ret = -EFAULT;
1382 : 0 : goto out;
1383 : : }
1384 : :
1385 : 0 : ret = drm_atomic_set_property(state, file_priv,
1386 : : obj, prop, prop_value);
1387 [ # # ]: 0 : if (ret) {
1388 : 0 : drm_mode_object_put(obj);
1389 : 0 : goto out;
1390 : : }
1391 : :
1392 : 0 : copied_props++;
1393 : : }
1394 : :
1395 : 0 : drm_mode_object_put(obj);
1396 : : }
1397 : :
1398 : 0 : ret = prepare_signaling(dev, state, arg, file_priv, &fence_state,
1399 : : &num_fences);
1400 [ # # ]: 0 : if (ret)
1401 : 0 : goto out;
1402 : :
1403 [ # # ]: 0 : if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
1404 : 0 : ret = drm_atomic_check_only(state);
1405 [ # # ]: 0 : } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
1406 : 0 : ret = drm_atomic_nonblocking_commit(state);
1407 : : } else {
1408 [ # # ]: 0 : if (drm_debug_enabled(DRM_UT_STATE))
1409 : 0 : drm_atomic_print_state(state);
1410 : :
1411 : 0 : ret = drm_atomic_commit(state);
1412 : : }
1413 : :
1414 : 0 : out:
1415 : 0 : complete_signaling(dev, state, fence_state, num_fences, !ret);
1416 : :
1417 [ # # ]: 0 : if (ret == -EDEADLK) {
1418 : 0 : drm_atomic_state_clear(state);
1419 : 0 : ret = drm_modeset_backoff(&ctx);
1420 [ # # ]: 0 : if (!ret)
1421 : 0 : goto retry;
1422 : : }
1423 : :
1424 : 0 : drm_atomic_state_put(state);
1425 : :
1426 : 0 : drm_modeset_drop_locks(&ctx);
1427 : 0 : drm_modeset_acquire_fini(&ctx);
1428 : :
1429 : 0 : return ret;
1430 : : }
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