1 /*
2 * Copyright (c) 2006-2008 Intel Corporation
3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
4 * Copyright (c) 2008 Red Hat Inc.
5 *
6 * DRM core CRTC related functions
7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty.
17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 *
26 * Authors:
27 * Keith Packard
28 * Eric Anholt <eric@anholt.net>
29 * Dave Airlie <airlied@linux.ie>
30 * Jesse Barnes <jesse.barnes@intel.com>
31 */
32 #include <sys/cdefs.h>
33 #include <dev/drm2/drmP.h>
34 #include <dev/drm2/drm_crtc.h>
35 #include <dev/drm2/drm_edid.h>
36 #include <dev/drm2/drm_fourcc.h>
37
38 static void drm_property_destroy_blob(struct drm_device *dev,
39 struct drm_property_blob *blob);
40
41 /* Avoid boilerplate. I'm tired of typing. */
42 #define DRM_ENUM_NAME_FN(fnname, list) \
43 char *fnname(int val) \
44 { \
45 int i; \
46 for (i = 0; i < ARRAY_SIZE(list); i++) { \
47 if (list[i].type == val) \
48 return list[i].name; \
49 } \
50 return "(unknown)"; \
51 }
52
53 /*
54 * Global properties
55 */
56 static struct drm_prop_enum_list drm_dpms_enum_list[] =
57 { { DRM_MODE_DPMS_ON, "On" },
58 { DRM_MODE_DPMS_STANDBY, "Standby" },
59 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
60 { DRM_MODE_DPMS_OFF, "Off" }
61 };
62
63 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
64
65 /*
66 * Optional properties
67 */
68 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
69 {
70 { DRM_MODE_SCALE_NONE, "None" },
71 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
72 { DRM_MODE_SCALE_CENTER, "Center" },
73 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
74 };
75
76 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
77 {
78 { DRM_MODE_DITHERING_OFF, "Off" },
79 { DRM_MODE_DITHERING_ON, "On" },
80 { DRM_MODE_DITHERING_AUTO, "Automatic" },
81 };
82
83 /*
84 * Non-global properties, but "required" for certain connectors.
85 */
86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
87 {
88 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
89 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
90 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
91 };
92
93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
94
95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
96 {
97 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
98 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
99 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
100 };
101
102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
103 drm_dvi_i_subconnector_enum_list)
104
105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
106 {
107 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
108 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
109 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
110 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
111 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
112 };
113
114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
115
116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
117 {
118 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
119 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
122 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
123 };
124
125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
126 drm_tv_subconnector_enum_list)
127
128 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
129 { DRM_MODE_DIRTY_OFF, "Off" },
130 { DRM_MODE_DIRTY_ON, "On" },
131 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
132 };
133
134 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
135 drm_dirty_info_enum_list)
136
137 struct drm_conn_prop_enum_list {
138 int type;
139 char *name;
140 int count;
141 };
142
143 /*
144 * Connector and encoder types.
145 */
146 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
147 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
148 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
149 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
150 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
151 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
152 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
153 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
154 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
155 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
156 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
157 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
158 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
159 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
160 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
161 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
162 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
163 };
164
165 static struct drm_prop_enum_list drm_encoder_enum_list[] =
166 { { DRM_MODE_ENCODER_NONE, "None" },
167 { DRM_MODE_ENCODER_DAC, "DAC" },
168 { DRM_MODE_ENCODER_TMDS, "TMDS" },
169 { DRM_MODE_ENCODER_LVDS, "LVDS" },
170 { DRM_MODE_ENCODER_TVDAC, "TV" },
171 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
172 };
173
drm_get_encoder_name(struct drm_encoder * encoder)174 char *drm_get_encoder_name(struct drm_encoder *encoder)
175 {
176 static char buf[32];
177
178 snprintf(buf, 32, "%s-%d",
179 drm_encoder_enum_list[encoder->encoder_type].name,
180 encoder->base.id);
181 return buf;
182 }
183 EXPORT_SYMBOL(drm_get_encoder_name);
184
drm_get_connector_name(struct drm_connector * connector)185 char *drm_get_connector_name(struct drm_connector *connector)
186 {
187 static char buf[32];
188
189 snprintf(buf, 32, "%s-%d",
190 drm_connector_enum_list[connector->connector_type].name,
191 connector->connector_type_id);
192 return buf;
193 }
194 EXPORT_SYMBOL(drm_get_connector_name);
195
drm_get_connector_status_name(enum drm_connector_status status)196 char *drm_get_connector_status_name(enum drm_connector_status status)
197 {
198 if (status == connector_status_connected)
199 return "connected";
200 else if (status == connector_status_disconnected)
201 return "disconnected";
202 else
203 return "unknown";
204 }
205
206 /**
207 * drm_mode_object_get - allocate a new identifier
208 * @dev: DRM device
209 * @ptr: object pointer, used to generate unique ID
210 * @type: object type
211 *
212 * LOCKING:
213 *
214 * Create a unique identifier based on @ptr in @dev's identifier space. Used
215 * for tracking modes, CRTCs and connectors.
216 *
217 * RETURNS:
218 * New unique (relative to other objects in @dev) integer identifier for the
219 * object.
220 */
drm_mode_object_get(struct drm_device * dev,struct drm_mode_object * obj,uint32_t obj_type)221 static int drm_mode_object_get(struct drm_device *dev,
222 struct drm_mode_object *obj, uint32_t obj_type)
223 {
224 int new_id = 0;
225 int ret;
226
227 ret = drm_gem_name_create(&dev->mode_config.crtc_names, obj, &new_id);
228 if (ret)
229 return ret;
230
231 obj->id = new_id;
232 obj->type = obj_type;
233 return 0;
234 }
235
236 /**
237 * drm_mode_object_put - free an identifer
238 * @dev: DRM device
239 * @id: ID to free
240 *
241 * LOCKING:
242 * Caller must hold DRM mode_config lock.
243 *
244 * Free @id from @dev's unique identifier pool.
245 */
drm_mode_object_put(struct drm_device * dev,struct drm_mode_object * object)246 static void drm_mode_object_put(struct drm_device *dev,
247 struct drm_mode_object *object)
248 {
249
250 drm_gem_names_remove(&dev->mode_config.crtc_names, object->id);
251 }
252
drm_mode_object_find(struct drm_device * dev,uint32_t id,uint32_t type)253 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
254 uint32_t id, uint32_t type)
255 {
256 struct drm_mode_object *obj = NULL;
257
258 obj = drm_gem_name_ref(&dev->mode_config.crtc_names, id, NULL);
259 if (!obj || (obj->type != type) || (obj->id != id))
260 obj = NULL;
261
262 return obj;
263 }
264 EXPORT_SYMBOL(drm_mode_object_find);
265
266 /**
267 * drm_framebuffer_init - initialize a framebuffer
268 * @dev: DRM device
269 *
270 * LOCKING:
271 * Caller must hold mode config lock.
272 *
273 * Allocates an ID for the framebuffer's parent mode object, sets its mode
274 * functions & device file and adds it to the master fd list.
275 *
276 * RETURNS:
277 * Zero on success, error code on failure.
278 */
drm_framebuffer_init(struct drm_device * dev,struct drm_framebuffer * fb,const struct drm_framebuffer_funcs * funcs)279 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
280 const struct drm_framebuffer_funcs *funcs)
281 {
282 int ret;
283
284 refcount_init(&fb->refcount, 1);
285
286 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
287 if (ret)
288 return ret;
289
290 fb->dev = dev;
291 fb->funcs = funcs;
292 dev->mode_config.num_fb++;
293 list_add(&fb->head, &dev->mode_config.fb_list);
294
295 return 0;
296 }
297 EXPORT_SYMBOL(drm_framebuffer_init);
298
drm_framebuffer_free(struct drm_framebuffer * fb)299 static void drm_framebuffer_free(struct drm_framebuffer *fb)
300 {
301 fb->funcs->destroy(fb);
302 }
303
304 /**
305 * drm_framebuffer_unreference - unref a framebuffer
306 *
307 * LOCKING:
308 * Caller must hold mode config lock.
309 */
drm_framebuffer_unreference(struct drm_framebuffer * fb)310 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
311 {
312 struct drm_device *dev = fb->dev;
313 DRM_DEBUG("FB ID: %d\n", fb->base.id);
314 if (!sx_xlocked(&dev->mode_config.mutex))
315 DRM_WARNING("%s: dev->mode_config.mutex not locked\n", __func__);
316 if (refcount_release(&fb->refcount))
317 drm_framebuffer_free(fb);
318 }
319 EXPORT_SYMBOL(drm_framebuffer_unreference);
320
321 /**
322 * drm_framebuffer_reference - incr the fb refcnt
323 */
drm_framebuffer_reference(struct drm_framebuffer * fb)324 void drm_framebuffer_reference(struct drm_framebuffer *fb)
325 {
326 DRM_DEBUG("FB ID: %d\n", fb->base.id);
327 refcount_acquire(&fb->refcount);
328 }
329 EXPORT_SYMBOL(drm_framebuffer_reference);
330
331 /**
332 * drm_framebuffer_cleanup - remove a framebuffer object
333 * @fb: framebuffer to remove
334 *
335 * LOCKING:
336 * Caller must hold mode config lock.
337 *
338 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
339 * it, setting it to NULL.
340 */
drm_framebuffer_cleanup(struct drm_framebuffer * fb)341 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
342 {
343 struct drm_device *dev = fb->dev;
344 /*
345 * This could be moved to drm_framebuffer_remove(), but for
346 * debugging is nice to keep around the list of fb's that are
347 * no longer associated w/ a drm_file but are not unreferenced
348 * yet. (i915 and omapdrm have debugfs files which will show
349 * this.)
350 */
351 drm_mode_object_put(dev, &fb->base);
352 list_del(&fb->head);
353 dev->mode_config.num_fb--;
354 }
355 EXPORT_SYMBOL(drm_framebuffer_cleanup);
356
357 /**
358 * drm_framebuffer_remove - remove and unreference a framebuffer object
359 * @fb: framebuffer to remove
360 *
361 * LOCKING:
362 * Caller must hold mode config lock.
363 *
364 * Scans all the CRTCs and planes in @dev's mode_config. If they're
365 * using @fb, removes it, setting it to NULL.
366 */
drm_framebuffer_remove(struct drm_framebuffer * fb)367 void drm_framebuffer_remove(struct drm_framebuffer *fb)
368 {
369 struct drm_device *dev = fb->dev;
370 struct drm_crtc *crtc;
371 struct drm_plane *plane;
372 struct drm_mode_set set;
373 int ret;
374
375 /* remove from any CRTC */
376 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
377 if (crtc->fb == fb) {
378 /* should turn off the crtc */
379 memset(&set, 0, sizeof(struct drm_mode_set));
380 set.crtc = crtc;
381 set.fb = NULL;
382 ret = crtc->funcs->set_config(&set);
383 if (ret)
384 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
385 }
386 }
387
388 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
389 if (plane->fb == fb) {
390 /* should turn off the crtc */
391 ret = plane->funcs->disable_plane(plane);
392 if (ret)
393 DRM_ERROR("failed to disable plane with busy fb\n");
394 /* disconnect the plane from the fb and crtc: */
395 plane->fb = NULL;
396 plane->crtc = NULL;
397 }
398 }
399
400 list_del(&fb->filp_head);
401
402 drm_framebuffer_unreference(fb);
403 }
404 EXPORT_SYMBOL(drm_framebuffer_remove);
405
406 /**
407 * drm_crtc_init - Initialise a new CRTC object
408 * @dev: DRM device
409 * @crtc: CRTC object to init
410 * @funcs: callbacks for the new CRTC
411 *
412 * LOCKING:
413 * Takes mode_config lock.
414 *
415 * Inits a new object created as base part of an driver crtc object.
416 *
417 * RETURNS:
418 * Zero on success, error code on failure.
419 */
drm_crtc_init(struct drm_device * dev,struct drm_crtc * crtc,const struct drm_crtc_funcs * funcs)420 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
421 const struct drm_crtc_funcs *funcs)
422 {
423 int ret;
424
425 crtc->dev = dev;
426 crtc->funcs = funcs;
427 crtc->invert_dimensions = false;
428
429 sx_xlock(&dev->mode_config.mutex);
430
431 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
432 if (ret)
433 goto out;
434
435 crtc->base.properties = &crtc->properties;
436
437 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
438 dev->mode_config.num_crtc++;
439
440 out:
441 sx_xunlock(&dev->mode_config.mutex);
442
443 return ret;
444 }
445 EXPORT_SYMBOL(drm_crtc_init);
446
447 /**
448 * drm_crtc_cleanup - Cleans up the core crtc usage.
449 * @crtc: CRTC to cleanup
450 *
451 * LOCKING:
452 * Caller must hold mode config lock.
453 *
454 * Cleanup @crtc. Removes from drm modesetting space
455 * does NOT free object, caller does that.
456 */
drm_crtc_cleanup(struct drm_crtc * crtc)457 void drm_crtc_cleanup(struct drm_crtc *crtc)
458 {
459 struct drm_device *dev = crtc->dev;
460
461 free(crtc->gamma_store, DRM_MEM_KMS);
462 crtc->gamma_store = NULL;
463
464 drm_mode_object_put(dev, &crtc->base);
465 list_del(&crtc->head);
466 dev->mode_config.num_crtc--;
467 }
468 EXPORT_SYMBOL(drm_crtc_cleanup);
469
470 /**
471 * drm_mode_probed_add - add a mode to a connector's probed mode list
472 * @connector: connector the new mode
473 * @mode: mode data
474 *
475 * LOCKING:
476 * Caller must hold mode config lock.
477 *
478 * Add @mode to @connector's mode list for later use.
479 */
drm_mode_probed_add(struct drm_connector * connector,struct drm_display_mode * mode)480 void drm_mode_probed_add(struct drm_connector *connector,
481 struct drm_display_mode *mode)
482 {
483 list_add(&mode->head, &connector->probed_modes);
484 }
485 EXPORT_SYMBOL(drm_mode_probed_add);
486
487 /**
488 * drm_mode_remove - remove and free a mode
489 * @connector: connector list to modify
490 * @mode: mode to remove
491 *
492 * LOCKING:
493 * Caller must hold mode config lock.
494 *
495 * Remove @mode from @connector's mode list, then free it.
496 */
drm_mode_remove(struct drm_connector * connector,struct drm_display_mode * mode)497 void drm_mode_remove(struct drm_connector *connector,
498 struct drm_display_mode *mode)
499 {
500 list_del(&mode->head);
501 drm_mode_destroy(connector->dev, mode);
502 }
503 EXPORT_SYMBOL(drm_mode_remove);
504
505 /**
506 * drm_connector_init - Init a preallocated connector
507 * @dev: DRM device
508 * @connector: the connector to init
509 * @funcs: callbacks for this connector
510 * @name: user visible name of the connector
511 *
512 * LOCKING:
513 * Takes mode config lock.
514 *
515 * Initialises a preallocated connector. Connectors should be
516 * subclassed as part of driver connector objects.
517 *
518 * RETURNS:
519 * Zero on success, error code on failure.
520 */
drm_connector_init(struct drm_device * dev,struct drm_connector * connector,const struct drm_connector_funcs * funcs,int connector_type)521 int drm_connector_init(struct drm_device *dev,
522 struct drm_connector *connector,
523 const struct drm_connector_funcs *funcs,
524 int connector_type)
525 {
526 int ret;
527
528 sx_xlock(&dev->mode_config.mutex);
529
530 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
531 if (ret)
532 goto out;
533
534 connector->base.properties = &connector->properties;
535 connector->dev = dev;
536 connector->funcs = funcs;
537 connector->connector_type = connector_type;
538 connector->connector_type_id =
539 ++drm_connector_enum_list[connector_type].count; /* TODO */
540 INIT_LIST_HEAD(&connector->user_modes);
541 INIT_LIST_HEAD(&connector->probed_modes);
542 INIT_LIST_HEAD(&connector->modes);
543 connector->edid_blob_ptr = NULL;
544 connector->status = connector_status_unknown;
545
546 list_add_tail(&connector->head, &dev->mode_config.connector_list);
547 dev->mode_config.num_connector++;
548
549 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
550 drm_object_attach_property(&connector->base,
551 dev->mode_config.edid_property,
552 0);
553
554 drm_object_attach_property(&connector->base,
555 dev->mode_config.dpms_property, 0);
556
557 out:
558 sx_xunlock(&dev->mode_config.mutex);
559
560 return ret;
561 }
562 EXPORT_SYMBOL(drm_connector_init);
563
564 /**
565 * drm_connector_cleanup - cleans up an initialised connector
566 * @connector: connector to cleanup
567 *
568 * LOCKING:
569 * Takes mode config lock.
570 *
571 * Cleans up the connector but doesn't free the object.
572 */
drm_connector_cleanup(struct drm_connector * connector)573 void drm_connector_cleanup(struct drm_connector *connector)
574 {
575 struct drm_device *dev = connector->dev;
576 struct drm_display_mode *mode, *t;
577
578 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
579 drm_mode_remove(connector, mode);
580
581 list_for_each_entry_safe(mode, t, &connector->modes, head)
582 drm_mode_remove(connector, mode);
583
584 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
585 drm_mode_remove(connector, mode);
586
587 sx_xlock(&dev->mode_config.mutex);
588 drm_mode_object_put(dev, &connector->base);
589 list_del(&connector->head);
590 dev->mode_config.num_connector--;
591 sx_xunlock(&dev->mode_config.mutex);
592 }
593 EXPORT_SYMBOL(drm_connector_cleanup);
594
drm_connector_unplug_all(struct drm_device * dev)595 void drm_connector_unplug_all(struct drm_device *dev)
596 {
597 #ifdef FREEBSD_NOTYET
598 struct drm_connector *connector;
599
600 /* taking the mode config mutex ends up in a clash with sysfs */
601 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
602 drm_sysfs_connector_remove(connector);
603 #endif /* FREEBSD_NOTYET */
604
605 }
606 EXPORT_SYMBOL(drm_connector_unplug_all);
607
drm_encoder_init(struct drm_device * dev,struct drm_encoder * encoder,const struct drm_encoder_funcs * funcs,int encoder_type)608 int drm_encoder_init(struct drm_device *dev,
609 struct drm_encoder *encoder,
610 const struct drm_encoder_funcs *funcs,
611 int encoder_type)
612 {
613 int ret;
614
615 sx_xlock(&dev->mode_config.mutex);
616
617 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
618 if (ret)
619 goto out;
620
621 encoder->dev = dev;
622 encoder->encoder_type = encoder_type;
623 encoder->funcs = funcs;
624
625 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
626 dev->mode_config.num_encoder++;
627
628 out:
629 sx_xunlock(&dev->mode_config.mutex);
630
631 return ret;
632 }
633 EXPORT_SYMBOL(drm_encoder_init);
634
drm_encoder_cleanup(struct drm_encoder * encoder)635 void drm_encoder_cleanup(struct drm_encoder *encoder)
636 {
637 struct drm_device *dev = encoder->dev;
638 sx_xlock(&dev->mode_config.mutex);
639 drm_mode_object_put(dev, &encoder->base);
640 list_del(&encoder->head);
641 dev->mode_config.num_encoder--;
642 sx_xunlock(&dev->mode_config.mutex);
643 }
644 EXPORT_SYMBOL(drm_encoder_cleanup);
645
drm_plane_init(struct drm_device * dev,struct drm_plane * plane,unsigned long possible_crtcs,const struct drm_plane_funcs * funcs,const uint32_t * formats,uint32_t format_count,bool priv)646 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
647 unsigned long possible_crtcs,
648 const struct drm_plane_funcs *funcs,
649 const uint32_t *formats, uint32_t format_count,
650 bool priv)
651 {
652 int ret;
653
654 sx_xlock(&dev->mode_config.mutex);
655
656 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
657 if (ret)
658 goto out;
659
660 plane->base.properties = &plane->properties;
661 plane->dev = dev;
662 plane->funcs = funcs;
663 plane->format_types = malloc(sizeof(uint32_t) * format_count,
664 DRM_MEM_KMS, M_WAITOK);
665 if (!plane->format_types) {
666 DRM_DEBUG_KMS("out of memory when allocating plane\n");
667 drm_mode_object_put(dev, &plane->base);
668 ret = -ENOMEM;
669 goto out;
670 }
671
672 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
673 plane->format_count = format_count;
674 plane->possible_crtcs = possible_crtcs;
675
676 /* private planes are not exposed to userspace, but depending on
677 * display hardware, might be convenient to allow sharing programming
678 * for the scanout engine with the crtc implementation.
679 */
680 if (!priv) {
681 list_add_tail(&plane->head, &dev->mode_config.plane_list);
682 dev->mode_config.num_plane++;
683 } else {
684 INIT_LIST_HEAD(&plane->head);
685 }
686
687 out:
688 sx_xunlock(&dev->mode_config.mutex);
689
690 return ret;
691 }
692 EXPORT_SYMBOL(drm_plane_init);
693
drm_plane_cleanup(struct drm_plane * plane)694 void drm_plane_cleanup(struct drm_plane *plane)
695 {
696 struct drm_device *dev = plane->dev;
697
698 sx_xlock(&dev->mode_config.mutex);
699 free(plane->format_types, DRM_MEM_KMS);
700 drm_mode_object_put(dev, &plane->base);
701 /* if not added to a list, it must be a private plane */
702 if (!list_empty(&plane->head)) {
703 list_del(&plane->head);
704 dev->mode_config.num_plane--;
705 }
706 sx_xunlock(&dev->mode_config.mutex);
707 }
708 EXPORT_SYMBOL(drm_plane_cleanup);
709
710 /**
711 * drm_mode_create - create a new display mode
712 * @dev: DRM device
713 *
714 * LOCKING:
715 * Caller must hold DRM mode_config lock.
716 *
717 * Create a new drm_display_mode, give it an ID, and return it.
718 *
719 * RETURNS:
720 * Pointer to new mode on success, NULL on error.
721 */
drm_mode_create(struct drm_device * dev)722 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
723 {
724 struct drm_display_mode *nmode;
725
726 nmode = malloc(sizeof(struct drm_display_mode), DRM_MEM_KMS,
727 M_WAITOK | M_ZERO);
728 if (!nmode)
729 return NULL;
730
731 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) {
732 free(nmode, DRM_MEM_KMS);
733 return NULL;
734 }
735
736 return nmode;
737 }
738 EXPORT_SYMBOL(drm_mode_create);
739
740 /**
741 * drm_mode_destroy - remove a mode
742 * @dev: DRM device
743 * @mode: mode to remove
744 *
745 * LOCKING:
746 * Caller must hold mode config lock.
747 *
748 * Free @mode's unique identifier, then free it.
749 */
drm_mode_destroy(struct drm_device * dev,struct drm_display_mode * mode)750 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
751 {
752 if (!mode)
753 return;
754
755 drm_mode_object_put(dev, &mode->base);
756
757 free(mode, DRM_MEM_KMS);
758 }
759 EXPORT_SYMBOL(drm_mode_destroy);
760
drm_mode_create_standard_connector_properties(struct drm_device * dev)761 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
762 {
763 struct drm_property *edid;
764 struct drm_property *dpms;
765
766 /*
767 * Standard properties (apply to all connectors)
768 */
769 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
770 DRM_MODE_PROP_IMMUTABLE,
771 "EDID", 0);
772 dev->mode_config.edid_property = edid;
773
774 dpms = drm_property_create_enum(dev, 0,
775 "DPMS", drm_dpms_enum_list,
776 ARRAY_SIZE(drm_dpms_enum_list));
777 dev->mode_config.dpms_property = dpms;
778
779 return 0;
780 }
781
782 /**
783 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
784 * @dev: DRM device
785 *
786 * Called by a driver the first time a DVI-I connector is made.
787 */
drm_mode_create_dvi_i_properties(struct drm_device * dev)788 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
789 {
790 struct drm_property *dvi_i_selector;
791 struct drm_property *dvi_i_subconnector;
792
793 if (dev->mode_config.dvi_i_select_subconnector_property)
794 return 0;
795
796 dvi_i_selector =
797 drm_property_create_enum(dev, 0,
798 "select subconnector",
799 drm_dvi_i_select_enum_list,
800 ARRAY_SIZE(drm_dvi_i_select_enum_list));
801 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
802
803 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
804 "subconnector",
805 drm_dvi_i_subconnector_enum_list,
806 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
807 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
808
809 return 0;
810 }
811 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
812
813 /**
814 * drm_create_tv_properties - create TV specific connector properties
815 * @dev: DRM device
816 * @num_modes: number of different TV formats (modes) supported
817 * @modes: array of pointers to strings containing name of each format
818 *
819 * Called by a driver's TV initialization routine, this function creates
820 * the TV specific connector properties for a given device. Caller is
821 * responsible for allocating a list of format names and passing them to
822 * this routine.
823 */
drm_mode_create_tv_properties(struct drm_device * dev,int num_modes,char * modes[])824 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
825 char *modes[])
826 {
827 struct drm_property *tv_selector;
828 struct drm_property *tv_subconnector;
829 int i;
830
831 if (dev->mode_config.tv_select_subconnector_property)
832 return 0;
833
834 /*
835 * Basic connector properties
836 */
837 tv_selector = drm_property_create_enum(dev, 0,
838 "select subconnector",
839 drm_tv_select_enum_list,
840 ARRAY_SIZE(drm_tv_select_enum_list));
841 dev->mode_config.tv_select_subconnector_property = tv_selector;
842
843 tv_subconnector =
844 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
845 "subconnector",
846 drm_tv_subconnector_enum_list,
847 ARRAY_SIZE(drm_tv_subconnector_enum_list));
848 dev->mode_config.tv_subconnector_property = tv_subconnector;
849
850 /*
851 * Other, TV specific properties: margins & TV modes.
852 */
853 dev->mode_config.tv_left_margin_property =
854 drm_property_create_range(dev, 0, "left margin", 0, 100);
855
856 dev->mode_config.tv_right_margin_property =
857 drm_property_create_range(dev, 0, "right margin", 0, 100);
858
859 dev->mode_config.tv_top_margin_property =
860 drm_property_create_range(dev, 0, "top margin", 0, 100);
861
862 dev->mode_config.tv_bottom_margin_property =
863 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
864
865 dev->mode_config.tv_mode_property =
866 drm_property_create(dev, DRM_MODE_PROP_ENUM,
867 "mode", num_modes);
868 for (i = 0; i < num_modes; i++)
869 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
870 i, modes[i]);
871
872 dev->mode_config.tv_brightness_property =
873 drm_property_create_range(dev, 0, "brightness", 0, 100);
874
875 dev->mode_config.tv_contrast_property =
876 drm_property_create_range(dev, 0, "contrast", 0, 100);
877
878 dev->mode_config.tv_flicker_reduction_property =
879 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
880
881 dev->mode_config.tv_overscan_property =
882 drm_property_create_range(dev, 0, "overscan", 0, 100);
883
884 dev->mode_config.tv_saturation_property =
885 drm_property_create_range(dev, 0, "saturation", 0, 100);
886
887 dev->mode_config.tv_hue_property =
888 drm_property_create_range(dev, 0, "hue", 0, 100);
889
890 return 0;
891 }
892 EXPORT_SYMBOL(drm_mode_create_tv_properties);
893
894 /**
895 * drm_mode_create_scaling_mode_property - create scaling mode property
896 * @dev: DRM device
897 *
898 * Called by a driver the first time it's needed, must be attached to desired
899 * connectors.
900 */
drm_mode_create_scaling_mode_property(struct drm_device * dev)901 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
902 {
903 struct drm_property *scaling_mode;
904
905 if (dev->mode_config.scaling_mode_property)
906 return 0;
907
908 scaling_mode =
909 drm_property_create_enum(dev, 0, "scaling mode",
910 drm_scaling_mode_enum_list,
911 ARRAY_SIZE(drm_scaling_mode_enum_list));
912
913 dev->mode_config.scaling_mode_property = scaling_mode;
914
915 return 0;
916 }
917 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
918
919 /**
920 * drm_mode_create_dithering_property - create dithering property
921 * @dev: DRM device
922 *
923 * Called by a driver the first time it's needed, must be attached to desired
924 * connectors.
925 */
drm_mode_create_dithering_property(struct drm_device * dev)926 int drm_mode_create_dithering_property(struct drm_device *dev)
927 {
928 struct drm_property *dithering_mode;
929
930 if (dev->mode_config.dithering_mode_property)
931 return 0;
932
933 dithering_mode =
934 drm_property_create_enum(dev, 0, "dithering",
935 drm_dithering_mode_enum_list,
936 ARRAY_SIZE(drm_dithering_mode_enum_list));
937 dev->mode_config.dithering_mode_property = dithering_mode;
938
939 return 0;
940 }
941 EXPORT_SYMBOL(drm_mode_create_dithering_property);
942
943 /**
944 * drm_mode_create_dirty_property - create dirty property
945 * @dev: DRM device
946 *
947 * Called by a driver the first time it's needed, must be attached to desired
948 * connectors.
949 */
drm_mode_create_dirty_info_property(struct drm_device * dev)950 int drm_mode_create_dirty_info_property(struct drm_device *dev)
951 {
952 struct drm_property *dirty_info;
953
954 if (dev->mode_config.dirty_info_property)
955 return 0;
956
957 dirty_info =
958 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
959 "dirty",
960 drm_dirty_info_enum_list,
961 ARRAY_SIZE(drm_dirty_info_enum_list));
962 dev->mode_config.dirty_info_property = dirty_info;
963
964 return 0;
965 }
966 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
967
968 /**
969 * drm_mode_config_init - initialize DRM mode_configuration structure
970 * @dev: DRM device
971 *
972 * LOCKING:
973 * None, should happen single threaded at init time.
974 *
975 * Initialize @dev's mode_config structure, used for tracking the graphics
976 * configuration of @dev.
977 */
drm_mode_config_init(struct drm_device * dev)978 void drm_mode_config_init(struct drm_device *dev)
979 {
980 sx_init(&dev->mode_config.mutex, "kmslk");
981 INIT_LIST_HEAD(&dev->mode_config.fb_list);
982 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
983 INIT_LIST_HEAD(&dev->mode_config.connector_list);
984 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
985 INIT_LIST_HEAD(&dev->mode_config.property_list);
986 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
987 INIT_LIST_HEAD(&dev->mode_config.plane_list);
988 drm_gem_names_init(&dev->mode_config.crtc_names);
989
990 sx_xlock(&dev->mode_config.mutex);
991 drm_mode_create_standard_connector_properties(dev);
992 sx_xunlock(&dev->mode_config.mutex);
993
994 /* Just to be sure */
995 dev->mode_config.num_fb = 0;
996 dev->mode_config.num_connector = 0;
997 dev->mode_config.num_crtc = 0;
998 dev->mode_config.num_encoder = 0;
999 }
1000 EXPORT_SYMBOL(drm_mode_config_init);
1001
drm_mode_group_init(struct drm_device * dev,struct drm_mode_group * group)1002 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1003 {
1004 uint32_t total_objects = 0;
1005
1006 total_objects += dev->mode_config.num_crtc;
1007 total_objects += dev->mode_config.num_connector;
1008 total_objects += dev->mode_config.num_encoder;
1009
1010 group->id_list = malloc(total_objects * sizeof(uint32_t),
1011 DRM_MEM_KMS, M_WAITOK | M_ZERO);
1012 if (!group->id_list)
1013 return -ENOMEM;
1014
1015 group->num_crtcs = 0;
1016 group->num_connectors = 0;
1017 group->num_encoders = 0;
1018 return 0;
1019 }
1020
drm_mode_group_free(struct drm_mode_group * group)1021 void drm_mode_group_free(struct drm_mode_group *group)
1022 {
1023 free(group->id_list, DRM_MEM_KMS);
1024 group->id_list = NULL;
1025 }
1026
drm_mode_group_init_legacy_group(struct drm_device * dev,struct drm_mode_group * group)1027 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1028 struct drm_mode_group *group)
1029 {
1030 struct drm_crtc *crtc;
1031 struct drm_encoder *encoder;
1032 struct drm_connector *connector;
1033 int ret;
1034
1035 if ((ret = drm_mode_group_init(dev, group)))
1036 return ret;
1037
1038 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1039 group->id_list[group->num_crtcs++] = crtc->base.id;
1040
1041 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1042 group->id_list[group->num_crtcs + group->num_encoders++] =
1043 encoder->base.id;
1044
1045 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1046 group->id_list[group->num_crtcs + group->num_encoders +
1047 group->num_connectors++] = connector->base.id;
1048
1049 return 0;
1050 }
1051 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1052
1053 /**
1054 * drm_mode_config_cleanup - free up DRM mode_config info
1055 * @dev: DRM device
1056 *
1057 * LOCKING:
1058 * Caller must hold mode config lock.
1059 *
1060 * Free up all the connectors and CRTCs associated with this DRM device, then
1061 * free up the framebuffers and associated buffer objects.
1062 *
1063 * FIXME: cleanup any dangling user buffer objects too
1064 */
drm_mode_config_cleanup(struct drm_device * dev)1065 void drm_mode_config_cleanup(struct drm_device *dev)
1066 {
1067 struct drm_connector *connector, *ot;
1068 struct drm_crtc *crtc, *ct;
1069 struct drm_encoder *encoder, *enct;
1070 struct drm_framebuffer *fb, *fbt;
1071 struct drm_property *property, *pt;
1072 struct drm_property_blob *blob, *bt;
1073 struct drm_plane *plane, *plt;
1074
1075 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
1076 head) {
1077 encoder->funcs->destroy(encoder);
1078 }
1079
1080 list_for_each_entry_safe(connector, ot,
1081 &dev->mode_config.connector_list, head) {
1082 connector->funcs->destroy(connector);
1083 }
1084
1085 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
1086 head) {
1087 drm_property_destroy(dev, property);
1088 }
1089
1090 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
1091 head) {
1092 drm_property_destroy_blob(dev, blob);
1093 }
1094
1095 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
1096 drm_framebuffer_remove(fb);
1097 }
1098
1099 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
1100 head) {
1101 plane->funcs->destroy(plane);
1102 }
1103
1104 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
1105 crtc->funcs->destroy(crtc);
1106 }
1107
1108 drm_gem_names_fini(&dev->mode_config.crtc_names);
1109 }
1110 EXPORT_SYMBOL(drm_mode_config_cleanup);
1111
1112 /**
1113 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1114 * @out: drm_mode_modeinfo struct to return to the user
1115 * @in: drm_display_mode to use
1116 *
1117 * LOCKING:
1118 * None.
1119 *
1120 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1121 * the user.
1122 */
drm_crtc_convert_to_umode(struct drm_mode_modeinfo * out,const struct drm_display_mode * in)1123 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1124 const struct drm_display_mode *in)
1125 {
1126 if (in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1127 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1128 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1129 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1130 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX)
1131 DRM_WARNING("timing values too large for mode info\n");
1132
1133 out->clock = in->clock;
1134 out->hdisplay = in->hdisplay;
1135 out->hsync_start = in->hsync_start;
1136 out->hsync_end = in->hsync_end;
1137 out->htotal = in->htotal;
1138 out->hskew = in->hskew;
1139 out->vdisplay = in->vdisplay;
1140 out->vsync_start = in->vsync_start;
1141 out->vsync_end = in->vsync_end;
1142 out->vtotal = in->vtotal;
1143 out->vscan = in->vscan;
1144 out->vrefresh = in->vrefresh;
1145 out->flags = in->flags;
1146 out->type = in->type;
1147 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1148 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1149 }
1150
1151 /**
1152 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1153 * @out: drm_display_mode to return to the user
1154 * @in: drm_mode_modeinfo to use
1155 *
1156 * LOCKING:
1157 * None.
1158 *
1159 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1160 * the caller.
1161 *
1162 * RETURNS:
1163 * Zero on success, errno on failure.
1164 */
drm_crtc_convert_umode(struct drm_display_mode * out,const struct drm_mode_modeinfo * in)1165 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1166 const struct drm_mode_modeinfo *in)
1167 {
1168 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1169 return -ERANGE;
1170
1171 out->clock = in->clock;
1172 out->hdisplay = in->hdisplay;
1173 out->hsync_start = in->hsync_start;
1174 out->hsync_end = in->hsync_end;
1175 out->htotal = in->htotal;
1176 out->hskew = in->hskew;
1177 out->vdisplay = in->vdisplay;
1178 out->vsync_start = in->vsync_start;
1179 out->vsync_end = in->vsync_end;
1180 out->vtotal = in->vtotal;
1181 out->vscan = in->vscan;
1182 out->vrefresh = in->vrefresh;
1183 out->flags = in->flags;
1184 out->type = in->type;
1185 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1186 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1187
1188 return 0;
1189 }
1190
1191 /**
1192 * drm_mode_getresources - get graphics configuration
1193 * @inode: inode from the ioctl
1194 * @filp: file * from the ioctl
1195 * @cmd: cmd from ioctl
1196 * @arg: arg from ioctl
1197 *
1198 * LOCKING:
1199 * Takes mode config lock.
1200 *
1201 * Construct a set of configuration description structures and return
1202 * them to the user, including CRTC, connector and framebuffer configuration.
1203 *
1204 * Called by the user via ioctl.
1205 *
1206 * RETURNS:
1207 * Zero on success, errno on failure.
1208 */
drm_mode_getresources(struct drm_device * dev,void * data,struct drm_file * file_priv)1209 int drm_mode_getresources(struct drm_device *dev, void *data,
1210 struct drm_file *file_priv)
1211 {
1212 struct drm_mode_card_res *card_res = data;
1213 struct list_head *lh;
1214 struct drm_framebuffer *fb;
1215 struct drm_connector *connector;
1216 struct drm_crtc *crtc;
1217 struct drm_encoder *encoder;
1218 int ret = 0;
1219 int connector_count = 0;
1220 int crtc_count = 0;
1221 int fb_count = 0;
1222 int encoder_count = 0;
1223 int copied = 0, i;
1224 uint32_t __user *fb_id;
1225 uint32_t __user *crtc_id;
1226 uint32_t __user *connector_id;
1227 uint32_t __user *encoder_id;
1228 struct drm_mode_group *mode_group;
1229
1230 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1231 return -EINVAL;
1232
1233 sx_xlock(&dev->mode_config.mutex);
1234
1235 /*
1236 * For the non-control nodes we need to limit the list of resources
1237 * by IDs in the group list for this node
1238 */
1239 list_for_each(lh, &file_priv->fbs)
1240 fb_count++;
1241
1242 mode_group = &file_priv->master->minor->mode_group;
1243 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1244
1245 list_for_each(lh, &dev->mode_config.crtc_list)
1246 crtc_count++;
1247
1248 list_for_each(lh, &dev->mode_config.connector_list)
1249 connector_count++;
1250
1251 list_for_each(lh, &dev->mode_config.encoder_list)
1252 encoder_count++;
1253 } else {
1254
1255 crtc_count = mode_group->num_crtcs;
1256 connector_count = mode_group->num_connectors;
1257 encoder_count = mode_group->num_encoders;
1258 }
1259
1260 card_res->max_height = dev->mode_config.max_height;
1261 card_res->min_height = dev->mode_config.min_height;
1262 card_res->max_width = dev->mode_config.max_width;
1263 card_res->min_width = dev->mode_config.min_width;
1264
1265 /* handle this in 4 parts */
1266 /* FBs */
1267 if (card_res->count_fbs >= fb_count) {
1268 copied = 0;
1269 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1270 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1271 if (put_user(fb->base.id, fb_id + copied)) {
1272 ret = -EFAULT;
1273 goto out;
1274 }
1275 copied++;
1276 }
1277 }
1278 card_res->count_fbs = fb_count;
1279
1280 /* CRTCs */
1281 if (card_res->count_crtcs >= crtc_count) {
1282 copied = 0;
1283 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1284 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1285 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1286 head) {
1287 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1288 if (put_user(crtc->base.id, crtc_id + copied)) {
1289 ret = -EFAULT;
1290 goto out;
1291 }
1292 copied++;
1293 }
1294 } else {
1295 for (i = 0; i < mode_group->num_crtcs; i++) {
1296 if (put_user(mode_group->id_list[i],
1297 crtc_id + copied)) {
1298 ret = -EFAULT;
1299 goto out;
1300 }
1301 copied++;
1302 }
1303 }
1304 }
1305 card_res->count_crtcs = crtc_count;
1306
1307 /* Encoders */
1308 if (card_res->count_encoders >= encoder_count) {
1309 copied = 0;
1310 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1311 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1312 list_for_each_entry(encoder,
1313 &dev->mode_config.encoder_list,
1314 head) {
1315 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1316 drm_get_encoder_name(encoder));
1317 if (put_user(encoder->base.id, encoder_id +
1318 copied)) {
1319 ret = -EFAULT;
1320 goto out;
1321 }
1322 copied++;
1323 }
1324 } else {
1325 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1326 if (put_user(mode_group->id_list[i],
1327 encoder_id + copied)) {
1328 ret = -EFAULT;
1329 goto out;
1330 }
1331 copied++;
1332 }
1333
1334 }
1335 }
1336 card_res->count_encoders = encoder_count;
1337
1338 /* Connectors */
1339 if (card_res->count_connectors >= connector_count) {
1340 copied = 0;
1341 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1342 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1343 list_for_each_entry(connector,
1344 &dev->mode_config.connector_list,
1345 head) {
1346 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1347 connector->base.id,
1348 drm_get_connector_name(connector));
1349 if (put_user(connector->base.id,
1350 connector_id + copied)) {
1351 ret = -EFAULT;
1352 goto out;
1353 }
1354 copied++;
1355 }
1356 } else {
1357 int start = mode_group->num_crtcs +
1358 mode_group->num_encoders;
1359 for (i = start; i < start + mode_group->num_connectors; i++) {
1360 if (put_user(mode_group->id_list[i],
1361 connector_id + copied)) {
1362 ret = -EFAULT;
1363 goto out;
1364 }
1365 copied++;
1366 }
1367 }
1368 }
1369 card_res->count_connectors = connector_count;
1370
1371 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1372 card_res->count_connectors, card_res->count_encoders);
1373
1374 out:
1375 sx_xunlock(&dev->mode_config.mutex);
1376 return ret;
1377 }
1378
1379 /**
1380 * drm_mode_getcrtc - get CRTC configuration
1381 * @inode: inode from the ioctl
1382 * @filp: file * from the ioctl
1383 * @cmd: cmd from ioctl
1384 * @arg: arg from ioctl
1385 *
1386 * LOCKING:
1387 * Takes mode config lock.
1388 *
1389 * Construct a CRTC configuration structure to return to the user.
1390 *
1391 * Called by the user via ioctl.
1392 *
1393 * RETURNS:
1394 * Zero on success, errno on failure.
1395 */
drm_mode_getcrtc(struct drm_device * dev,void * data,struct drm_file * file_priv)1396 int drm_mode_getcrtc(struct drm_device *dev,
1397 void *data, struct drm_file *file_priv)
1398 {
1399 struct drm_mode_crtc *crtc_resp = data;
1400 struct drm_crtc *crtc;
1401 struct drm_mode_object *obj;
1402 int ret = 0;
1403
1404 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1405 return -EINVAL;
1406
1407 sx_xlock(&dev->mode_config.mutex);
1408
1409 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1410 DRM_MODE_OBJECT_CRTC);
1411 if (!obj) {
1412 ret = -EINVAL;
1413 goto out;
1414 }
1415 crtc = obj_to_crtc(obj);
1416
1417 crtc_resp->x = crtc->x;
1418 crtc_resp->y = crtc->y;
1419 crtc_resp->gamma_size = crtc->gamma_size;
1420 if (crtc->fb)
1421 crtc_resp->fb_id = crtc->fb->base.id;
1422 else
1423 crtc_resp->fb_id = 0;
1424
1425 if (crtc->enabled) {
1426
1427 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1428 crtc_resp->mode_valid = 1;
1429
1430 } else {
1431 crtc_resp->mode_valid = 0;
1432 }
1433
1434 out:
1435 sx_xunlock(&dev->mode_config.mutex);
1436 return ret;
1437 }
1438
1439 /**
1440 * drm_mode_getconnector - get connector configuration
1441 * @inode: inode from the ioctl
1442 * @filp: file * from the ioctl
1443 * @cmd: cmd from ioctl
1444 * @arg: arg from ioctl
1445 *
1446 * LOCKING:
1447 * Takes mode config lock.
1448 *
1449 * Construct a connector configuration structure to return to the user.
1450 *
1451 * Called by the user via ioctl.
1452 *
1453 * RETURNS:
1454 * Zero on success, errno on failure.
1455 */
drm_mode_getconnector(struct drm_device * dev,void * data,struct drm_file * file_priv)1456 int drm_mode_getconnector(struct drm_device *dev, void *data,
1457 struct drm_file *file_priv)
1458 {
1459 struct drm_mode_get_connector *out_resp = data;
1460 struct drm_mode_object *obj;
1461 struct drm_connector *connector;
1462 struct drm_display_mode *mode;
1463 int mode_count = 0;
1464 int props_count = 0;
1465 int encoders_count = 0;
1466 int ret = 0;
1467 int copied = 0;
1468 int i;
1469 struct drm_mode_modeinfo u_mode;
1470 struct drm_mode_modeinfo __user *mode_ptr;
1471 uint32_t __user *prop_ptr;
1472 uint64_t __user *prop_values;
1473 uint32_t __user *encoder_ptr;
1474
1475 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1476 return -EINVAL;
1477
1478 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1479
1480 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1481
1482 sx_xlock(&dev->mode_config.mutex);
1483
1484 obj = drm_mode_object_find(dev, out_resp->connector_id,
1485 DRM_MODE_OBJECT_CONNECTOR);
1486 if (!obj) {
1487 ret = -EINVAL;
1488 goto out;
1489 }
1490 connector = obj_to_connector(obj);
1491
1492 props_count = connector->properties.count;
1493
1494 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1495 if (connector->encoder_ids[i] != 0) {
1496 encoders_count++;
1497 }
1498 }
1499
1500 if (out_resp->count_modes == 0) {
1501 connector->funcs->fill_modes(connector,
1502 dev->mode_config.max_width,
1503 dev->mode_config.max_height);
1504 }
1505
1506 /* delayed so we get modes regardless of pre-fill_modes state */
1507 list_for_each_entry(mode, &connector->modes, head)
1508 mode_count++;
1509
1510 out_resp->connector_id = connector->base.id;
1511 out_resp->connector_type = connector->connector_type;
1512 out_resp->connector_type_id = connector->connector_type_id;
1513 out_resp->mm_width = connector->display_info.width_mm;
1514 out_resp->mm_height = connector->display_info.height_mm;
1515 out_resp->subpixel = connector->display_info.subpixel_order;
1516 out_resp->connection = connector->status;
1517 if (connector->encoder)
1518 out_resp->encoder_id = connector->encoder->base.id;
1519 else
1520 out_resp->encoder_id = 0;
1521
1522 /*
1523 * This ioctl is called twice, once to determine how much space is
1524 * needed, and the 2nd time to fill it.
1525 */
1526 if ((out_resp->count_modes >= mode_count) && mode_count) {
1527 copied = 0;
1528 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1529 list_for_each_entry(mode, &connector->modes, head) {
1530 drm_crtc_convert_to_umode(&u_mode, mode);
1531 if (copy_to_user(mode_ptr + copied,
1532 &u_mode, sizeof(u_mode))) {
1533 ret = -EFAULT;
1534 goto out;
1535 }
1536 copied++;
1537 }
1538 }
1539 out_resp->count_modes = mode_count;
1540
1541 if ((out_resp->count_props >= props_count) && props_count) {
1542 copied = 0;
1543 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1544 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1545 for (i = 0; i < connector->properties.count; i++) {
1546 if (put_user(connector->properties.ids[i],
1547 prop_ptr + copied)) {
1548 ret = -EFAULT;
1549 goto out;
1550 }
1551
1552 if (put_user(connector->properties.values[i],
1553 prop_values + copied)) {
1554 ret = -EFAULT;
1555 goto out;
1556 }
1557 copied++;
1558 }
1559 }
1560 out_resp->count_props = props_count;
1561
1562 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1563 copied = 0;
1564 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1565 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1566 if (connector->encoder_ids[i] != 0) {
1567 if (put_user(connector->encoder_ids[i],
1568 encoder_ptr + copied)) {
1569 ret = -EFAULT;
1570 goto out;
1571 }
1572 copied++;
1573 }
1574 }
1575 }
1576 out_resp->count_encoders = encoders_count;
1577
1578 out:
1579 sx_xunlock(&dev->mode_config.mutex);
1580 return ret;
1581 }
1582
drm_mode_getencoder(struct drm_device * dev,void * data,struct drm_file * file_priv)1583 int drm_mode_getencoder(struct drm_device *dev, void *data,
1584 struct drm_file *file_priv)
1585 {
1586 struct drm_mode_get_encoder *enc_resp = data;
1587 struct drm_mode_object *obj;
1588 struct drm_encoder *encoder;
1589 int ret = 0;
1590
1591 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1592 return -EINVAL;
1593
1594 sx_xlock(&dev->mode_config.mutex);
1595 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1596 DRM_MODE_OBJECT_ENCODER);
1597 if (!obj) {
1598 ret = -EINVAL;
1599 goto out;
1600 }
1601 encoder = obj_to_encoder(obj);
1602
1603 if (encoder->crtc)
1604 enc_resp->crtc_id = encoder->crtc->base.id;
1605 else
1606 enc_resp->crtc_id = 0;
1607 enc_resp->encoder_type = encoder->encoder_type;
1608 enc_resp->encoder_id = encoder->base.id;
1609 enc_resp->possible_crtcs = encoder->possible_crtcs;
1610 enc_resp->possible_clones = encoder->possible_clones;
1611
1612 out:
1613 sx_xunlock(&dev->mode_config.mutex);
1614 return ret;
1615 }
1616
1617 /**
1618 * drm_mode_getplane_res - get plane info
1619 * @dev: DRM device
1620 * @data: ioctl data
1621 * @file_priv: DRM file info
1622 *
1623 * LOCKING:
1624 * Takes mode config lock.
1625 *
1626 * Return an plane count and set of IDs.
1627 */
drm_mode_getplane_res(struct drm_device * dev,void * data,struct drm_file * file_priv)1628 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1629 struct drm_file *file_priv)
1630 {
1631 struct drm_mode_get_plane_res *plane_resp = data;
1632 struct drm_mode_config *config;
1633 struct drm_plane *plane;
1634 uint32_t __user *plane_ptr;
1635 int copied = 0, ret = 0;
1636
1637 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1638 return -EINVAL;
1639
1640 sx_xlock(&dev->mode_config.mutex);
1641 config = &dev->mode_config;
1642
1643 /*
1644 * This ioctl is called twice, once to determine how much space is
1645 * needed, and the 2nd time to fill it.
1646 */
1647 if (config->num_plane &&
1648 (plane_resp->count_planes >= config->num_plane)) {
1649 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1650
1651 list_for_each_entry(plane, &config->plane_list, head) {
1652 if (put_user(plane->base.id, plane_ptr + copied)) {
1653 ret = -EFAULT;
1654 goto out;
1655 }
1656 copied++;
1657 }
1658 }
1659 plane_resp->count_planes = config->num_plane;
1660
1661 out:
1662 sx_xunlock(&dev->mode_config.mutex);
1663 return ret;
1664 }
1665
1666 /**
1667 * drm_mode_getplane - get plane info
1668 * @dev: DRM device
1669 * @data: ioctl data
1670 * @file_priv: DRM file info
1671 *
1672 * LOCKING:
1673 * Takes mode config lock.
1674 *
1675 * Return plane info, including formats supported, gamma size, any
1676 * current fb, etc.
1677 */
drm_mode_getplane(struct drm_device * dev,void * data,struct drm_file * file_priv)1678 int drm_mode_getplane(struct drm_device *dev, void *data,
1679 struct drm_file *file_priv)
1680 {
1681 struct drm_mode_get_plane *plane_resp = data;
1682 struct drm_mode_object *obj;
1683 struct drm_plane *plane;
1684 uint32_t __user *format_ptr;
1685 int ret = 0;
1686
1687 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1688 return -EINVAL;
1689
1690 sx_xlock(&dev->mode_config.mutex);
1691 obj = drm_mode_object_find(dev, plane_resp->plane_id,
1692 DRM_MODE_OBJECT_PLANE);
1693 if (!obj) {
1694 ret = -ENOENT;
1695 goto out;
1696 }
1697 plane = obj_to_plane(obj);
1698
1699 if (plane->crtc)
1700 plane_resp->crtc_id = plane->crtc->base.id;
1701 else
1702 plane_resp->crtc_id = 0;
1703
1704 if (plane->fb)
1705 plane_resp->fb_id = plane->fb->base.id;
1706 else
1707 plane_resp->fb_id = 0;
1708
1709 plane_resp->plane_id = plane->base.id;
1710 plane_resp->possible_crtcs = plane->possible_crtcs;
1711 plane_resp->gamma_size = plane->gamma_size;
1712
1713 /*
1714 * This ioctl is called twice, once to determine how much space is
1715 * needed, and the 2nd time to fill it.
1716 */
1717 if (plane->format_count &&
1718 (plane_resp->count_format_types >= plane->format_count)) {
1719 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
1720 if (copy_to_user(format_ptr,
1721 plane->format_types,
1722 sizeof(uint32_t) * plane->format_count)) {
1723 ret = -EFAULT;
1724 goto out;
1725 }
1726 }
1727 plane_resp->count_format_types = plane->format_count;
1728
1729 out:
1730 sx_xunlock(&dev->mode_config.mutex);
1731 return ret;
1732 }
1733
1734 /**
1735 * drm_mode_setplane - set up or tear down an plane
1736 * @dev: DRM device
1737 * @data: ioctl data*
1738 * @file_prive: DRM file info
1739 *
1740 * LOCKING:
1741 * Takes mode config lock.
1742 *
1743 * Set plane info, including placement, fb, scaling, and other factors.
1744 * Or pass a NULL fb to disable.
1745 */
drm_mode_setplane(struct drm_device * dev,void * data,struct drm_file * file_priv)1746 int drm_mode_setplane(struct drm_device *dev, void *data,
1747 struct drm_file *file_priv)
1748 {
1749 struct drm_mode_set_plane *plane_req = data;
1750 struct drm_mode_object *obj;
1751 struct drm_plane *plane;
1752 struct drm_crtc *crtc;
1753 struct drm_framebuffer *fb;
1754 int ret = 0;
1755 unsigned int fb_width, fb_height;
1756 int i;
1757
1758 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1759 return -EINVAL;
1760
1761 sx_xlock(&dev->mode_config.mutex);
1762
1763 /*
1764 * First, find the plane, crtc, and fb objects. If not available,
1765 * we don't bother to call the driver.
1766 */
1767 obj = drm_mode_object_find(dev, plane_req->plane_id,
1768 DRM_MODE_OBJECT_PLANE);
1769 if (!obj) {
1770 DRM_DEBUG_KMS("Unknown plane ID %d\n",
1771 plane_req->plane_id);
1772 ret = -ENOENT;
1773 goto out;
1774 }
1775 plane = obj_to_plane(obj);
1776
1777 /* No fb means shut it down */
1778 if (!plane_req->fb_id) {
1779 plane->funcs->disable_plane(plane);
1780 plane->crtc = NULL;
1781 plane->fb = NULL;
1782 goto out;
1783 }
1784
1785 obj = drm_mode_object_find(dev, plane_req->crtc_id,
1786 DRM_MODE_OBJECT_CRTC);
1787 if (!obj) {
1788 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
1789 plane_req->crtc_id);
1790 ret = -ENOENT;
1791 goto out;
1792 }
1793 crtc = obj_to_crtc(obj);
1794
1795 obj = drm_mode_object_find(dev, plane_req->fb_id,
1796 DRM_MODE_OBJECT_FB);
1797 if (!obj) {
1798 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
1799 plane_req->fb_id);
1800 ret = -ENOENT;
1801 goto out;
1802 }
1803 fb = obj_to_fb(obj);
1804
1805 /* Check whether this plane supports the fb pixel format. */
1806 for (i = 0; i < plane->format_count; i++)
1807 if (fb->pixel_format == plane->format_types[i])
1808 break;
1809 if (i == plane->format_count) {
1810 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
1811 ret = -EINVAL;
1812 goto out;
1813 }
1814
1815 fb_width = fb->width << 16;
1816 fb_height = fb->height << 16;
1817
1818 /* Make sure source coordinates are inside the fb. */
1819 if (plane_req->src_w > fb_width ||
1820 plane_req->src_x > fb_width - plane_req->src_w ||
1821 plane_req->src_h > fb_height ||
1822 plane_req->src_y > fb_height - plane_req->src_h) {
1823 DRM_DEBUG_KMS("Invalid source coordinates "
1824 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
1825 plane_req->src_w >> 16,
1826 ((plane_req->src_w & 0xffff) * 15625) >> 10,
1827 plane_req->src_h >> 16,
1828 ((plane_req->src_h & 0xffff) * 15625) >> 10,
1829 plane_req->src_x >> 16,
1830 ((plane_req->src_x & 0xffff) * 15625) >> 10,
1831 plane_req->src_y >> 16,
1832 ((plane_req->src_y & 0xffff) * 15625) >> 10);
1833 ret = -ENOSPC;
1834 goto out;
1835 }
1836
1837 /* Give drivers some help against integer overflows */
1838 if (plane_req->crtc_w > INT_MAX ||
1839 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
1840 plane_req->crtc_h > INT_MAX ||
1841 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
1842 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
1843 plane_req->crtc_w, plane_req->crtc_h,
1844 plane_req->crtc_x, plane_req->crtc_y);
1845 ret = -ERANGE;
1846 goto out;
1847 }
1848
1849 ret = plane->funcs->update_plane(plane, crtc, fb,
1850 plane_req->crtc_x, plane_req->crtc_y,
1851 plane_req->crtc_w, plane_req->crtc_h,
1852 plane_req->src_x, plane_req->src_y,
1853 plane_req->src_w, plane_req->src_h);
1854 if (!ret) {
1855 plane->crtc = crtc;
1856 plane->fb = fb;
1857 }
1858
1859 out:
1860 sx_xunlock(&dev->mode_config.mutex);
1861
1862 return ret;
1863 }
1864
1865 /**
1866 * drm_mode_setcrtc - set CRTC configuration
1867 * @inode: inode from the ioctl
1868 * @filp: file * from the ioctl
1869 * @cmd: cmd from ioctl
1870 * @arg: arg from ioctl
1871 *
1872 * LOCKING:
1873 * Takes mode config lock.
1874 *
1875 * Build a new CRTC configuration based on user request.
1876 *
1877 * Called by the user via ioctl.
1878 *
1879 * RETURNS:
1880 * Zero on success, errno on failure.
1881 */
drm_mode_setcrtc(struct drm_device * dev,void * data,struct drm_file * file_priv)1882 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1883 struct drm_file *file_priv)
1884 {
1885 struct drm_mode_config *config = &dev->mode_config;
1886 struct drm_mode_crtc *crtc_req = data;
1887 struct drm_mode_object *obj;
1888 struct drm_crtc *crtc;
1889 struct drm_connector **connector_set = NULL, *connector;
1890 struct drm_framebuffer *fb = NULL;
1891 struct drm_display_mode *mode = NULL;
1892 struct drm_mode_set set;
1893 uint32_t __user *set_connectors_ptr;
1894 int ret;
1895 int i;
1896
1897 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1898 return -EINVAL;
1899
1900 /* For some reason crtc x/y offsets are signed internally. */
1901 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
1902 return -ERANGE;
1903
1904 sx_xlock(&dev->mode_config.mutex);
1905 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1906 DRM_MODE_OBJECT_CRTC);
1907 if (!obj) {
1908 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1909 ret = -EINVAL;
1910 goto out;
1911 }
1912 crtc = obj_to_crtc(obj);
1913 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1914
1915 if (crtc_req->mode_valid) {
1916 int hdisplay, vdisplay;
1917 /* If we have a mode we need a framebuffer. */
1918 /* If we pass -1, set the mode with the currently bound fb */
1919 if (crtc_req->fb_id == -1) {
1920 if (!crtc->fb) {
1921 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
1922 ret = -EINVAL;
1923 goto out;
1924 }
1925 fb = crtc->fb;
1926 } else {
1927 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1928 DRM_MODE_OBJECT_FB);
1929 if (!obj) {
1930 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1931 crtc_req->fb_id);
1932 ret = -EINVAL;
1933 goto out;
1934 }
1935 fb = obj_to_fb(obj);
1936 }
1937
1938 mode = drm_mode_create(dev);
1939 if (!mode) {
1940 ret = -ENOMEM;
1941 goto out;
1942 }
1943
1944 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
1945 if (ret) {
1946 DRM_DEBUG_KMS("Invalid mode\n");
1947 goto out;
1948 }
1949
1950 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1951
1952 hdisplay = mode->hdisplay;
1953 vdisplay = mode->vdisplay;
1954
1955 if (crtc->invert_dimensions) {
1956 int tmp;
1957 tmp = vdisplay;
1958 vdisplay = hdisplay;
1959 hdisplay = tmp;
1960 }
1961
1962 if (hdisplay > fb->width ||
1963 vdisplay > fb->height ||
1964 crtc_req->x > fb->width - hdisplay ||
1965 crtc_req->y > fb->height - vdisplay) {
1966 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
1967 fb->width, fb->height,
1968 hdisplay, vdisplay, crtc_req->x, crtc_req->y,
1969 crtc->invert_dimensions ? " (inverted)" : "");
1970 ret = -ENOSPC;
1971 goto out;
1972 }
1973 }
1974
1975 if (crtc_req->count_connectors == 0 && mode) {
1976 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1977 ret = -EINVAL;
1978 goto out;
1979 }
1980
1981 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1982 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1983 crtc_req->count_connectors);
1984 ret = -EINVAL;
1985 goto out;
1986 }
1987
1988 if (crtc_req->count_connectors > 0) {
1989 u32 out_id;
1990
1991 /* Avoid unbounded kernel memory allocation */
1992 if (crtc_req->count_connectors > config->num_connector) {
1993 ret = -EINVAL;
1994 goto out;
1995 }
1996
1997 connector_set = malloc(crtc_req->count_connectors *
1998 sizeof(struct drm_connector *),
1999 DRM_MEM_KMS, M_WAITOK);
2000 if (!connector_set) {
2001 ret = -ENOMEM;
2002 goto out;
2003 }
2004
2005 for (i = 0; i < crtc_req->count_connectors; i++) {
2006 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2007 if (get_user(out_id, &set_connectors_ptr[i])) {
2008 ret = -EFAULT;
2009 goto out;
2010 }
2011
2012 obj = drm_mode_object_find(dev, out_id,
2013 DRM_MODE_OBJECT_CONNECTOR);
2014 if (!obj) {
2015 DRM_DEBUG_KMS("Connector id %d unknown\n",
2016 out_id);
2017 ret = -EINVAL;
2018 goto out;
2019 }
2020 connector = obj_to_connector(obj);
2021 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2022 connector->base.id,
2023 drm_get_connector_name(connector));
2024
2025 connector_set[i] = connector;
2026 }
2027 }
2028
2029 set.crtc = crtc;
2030 set.x = crtc_req->x;
2031 set.y = crtc_req->y;
2032 set.mode = mode;
2033 set.connectors = connector_set;
2034 set.num_connectors = crtc_req->count_connectors;
2035 set.fb = fb;
2036 ret = crtc->funcs->set_config(&set);
2037
2038 out:
2039 free(connector_set, DRM_MEM_KMS);
2040 drm_mode_destroy(dev, mode);
2041 sx_xunlock(&dev->mode_config.mutex);
2042 return ret;
2043 }
2044
drm_mode_cursor_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)2045 int drm_mode_cursor_ioctl(struct drm_device *dev,
2046 void *data, struct drm_file *file_priv)
2047 {
2048 struct drm_mode_cursor *req = data;
2049 struct drm_mode_object *obj;
2050 struct drm_crtc *crtc;
2051 int ret = 0;
2052
2053 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2054 return -EINVAL;
2055
2056 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2057 return -EINVAL;
2058
2059 sx_xlock(&dev->mode_config.mutex);
2060 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
2061 if (!obj) {
2062 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2063 ret = -EINVAL;
2064 goto out;
2065 }
2066 crtc = obj_to_crtc(obj);
2067
2068 if (req->flags & DRM_MODE_CURSOR_BO) {
2069 if (!crtc->funcs->cursor_set) {
2070 ret = -ENXIO;
2071 goto out;
2072 }
2073 /* Turns off the cursor if handle is 0 */
2074 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2075 req->width, req->height);
2076 }
2077
2078 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2079 if (crtc->funcs->cursor_move) {
2080 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2081 } else {
2082 ret = -EFAULT;
2083 goto out;
2084 }
2085 }
2086 out:
2087 sx_xunlock(&dev->mode_config.mutex);
2088 return ret;
2089 }
2090
2091 /* Original addfb only supported RGB formats, so figure out which one */
drm_mode_legacy_fb_format(uint32_t bpp,uint32_t depth)2092 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2093 {
2094 uint32_t fmt;
2095
2096 switch (bpp) {
2097 case 8:
2098 fmt = DRM_FORMAT_C8;
2099 break;
2100 case 16:
2101 if (depth == 15)
2102 fmt = DRM_FORMAT_XRGB1555;
2103 else
2104 fmt = DRM_FORMAT_RGB565;
2105 break;
2106 case 24:
2107 fmt = DRM_FORMAT_RGB888;
2108 break;
2109 case 32:
2110 if (depth == 24)
2111 fmt = DRM_FORMAT_XRGB8888;
2112 else if (depth == 30)
2113 fmt = DRM_FORMAT_XRGB2101010;
2114 else
2115 fmt = DRM_FORMAT_ARGB8888;
2116 break;
2117 default:
2118 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2119 fmt = DRM_FORMAT_XRGB8888;
2120 break;
2121 }
2122
2123 return fmt;
2124 }
2125 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2126
2127 /**
2128 * drm_mode_addfb - add an FB to the graphics configuration
2129 * @inode: inode from the ioctl
2130 * @filp: file * from the ioctl
2131 * @cmd: cmd from ioctl
2132 * @arg: arg from ioctl
2133 *
2134 * LOCKING:
2135 * Takes mode config lock.
2136 *
2137 * Add a new FB to the specified CRTC, given a user request.
2138 *
2139 * Called by the user via ioctl.
2140 *
2141 * RETURNS:
2142 * Zero on success, errno on failure.
2143 */
drm_mode_addfb(struct drm_device * dev,void * data,struct drm_file * file_priv)2144 int drm_mode_addfb(struct drm_device *dev,
2145 void *data, struct drm_file *file_priv)
2146 {
2147 struct drm_mode_fb_cmd *or = data;
2148 struct drm_mode_fb_cmd2 r = {};
2149 struct drm_mode_config *config = &dev->mode_config;
2150 struct drm_framebuffer *fb;
2151 int ret = 0;
2152
2153 /* Use new struct with format internally */
2154 r.fb_id = or->fb_id;
2155 r.width = or->width;
2156 r.height = or->height;
2157 r.pitches[0] = or->pitch;
2158 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2159 r.handles[0] = or->handle;
2160
2161 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2162 return -EINVAL;
2163
2164 if ((config->min_width > r.width) || (r.width > config->max_width))
2165 return -EINVAL;
2166
2167 if ((config->min_height > r.height) || (r.height > config->max_height))
2168 return -EINVAL;
2169
2170 sx_xlock(&dev->mode_config.mutex);
2171
2172 /* TODO check buffer is sufficiently large */
2173 /* TODO setup destructor callback */
2174
2175 ret = dev->mode_config.funcs->fb_create(dev, file_priv, &r, &fb);
2176 if (ret != 0) {
2177 DRM_DEBUG_KMS("could not create framebuffer\n");
2178 goto out;
2179 }
2180
2181 or->fb_id = fb->base.id;
2182 list_add(&fb->filp_head, &file_priv->fbs);
2183 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2184
2185 out:
2186 sx_xunlock(&dev->mode_config.mutex);
2187 return ret;
2188 }
2189
format_check(const struct drm_mode_fb_cmd2 * r)2190 static int format_check(const struct drm_mode_fb_cmd2 *r)
2191 {
2192 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2193
2194 switch (format) {
2195 case DRM_FORMAT_C8:
2196 case DRM_FORMAT_RGB332:
2197 case DRM_FORMAT_BGR233:
2198 case DRM_FORMAT_XRGB4444:
2199 case DRM_FORMAT_XBGR4444:
2200 case DRM_FORMAT_RGBX4444:
2201 case DRM_FORMAT_BGRX4444:
2202 case DRM_FORMAT_ARGB4444:
2203 case DRM_FORMAT_ABGR4444:
2204 case DRM_FORMAT_RGBA4444:
2205 case DRM_FORMAT_BGRA4444:
2206 case DRM_FORMAT_XRGB1555:
2207 case DRM_FORMAT_XBGR1555:
2208 case DRM_FORMAT_RGBX5551:
2209 case DRM_FORMAT_BGRX5551:
2210 case DRM_FORMAT_ARGB1555:
2211 case DRM_FORMAT_ABGR1555:
2212 case DRM_FORMAT_RGBA5551:
2213 case DRM_FORMAT_BGRA5551:
2214 case DRM_FORMAT_RGB565:
2215 case DRM_FORMAT_BGR565:
2216 case DRM_FORMAT_RGB888:
2217 case DRM_FORMAT_BGR888:
2218 case DRM_FORMAT_XRGB8888:
2219 case DRM_FORMAT_XBGR8888:
2220 case DRM_FORMAT_RGBX8888:
2221 case DRM_FORMAT_BGRX8888:
2222 case DRM_FORMAT_ARGB8888:
2223 case DRM_FORMAT_ABGR8888:
2224 case DRM_FORMAT_RGBA8888:
2225 case DRM_FORMAT_BGRA8888:
2226 case DRM_FORMAT_XRGB2101010:
2227 case DRM_FORMAT_XBGR2101010:
2228 case DRM_FORMAT_RGBX1010102:
2229 case DRM_FORMAT_BGRX1010102:
2230 case DRM_FORMAT_ARGB2101010:
2231 case DRM_FORMAT_ABGR2101010:
2232 case DRM_FORMAT_RGBA1010102:
2233 case DRM_FORMAT_BGRA1010102:
2234 case DRM_FORMAT_YUYV:
2235 case DRM_FORMAT_YVYU:
2236 case DRM_FORMAT_UYVY:
2237 case DRM_FORMAT_VYUY:
2238 case DRM_FORMAT_AYUV:
2239 case DRM_FORMAT_NV12:
2240 case DRM_FORMAT_NV21:
2241 case DRM_FORMAT_NV16:
2242 case DRM_FORMAT_NV61:
2243 case DRM_FORMAT_NV24:
2244 case DRM_FORMAT_NV42:
2245 case DRM_FORMAT_YUV410:
2246 case DRM_FORMAT_YVU410:
2247 case DRM_FORMAT_YUV411:
2248 case DRM_FORMAT_YVU411:
2249 case DRM_FORMAT_YUV420:
2250 case DRM_FORMAT_YVU420:
2251 case DRM_FORMAT_YUV422:
2252 case DRM_FORMAT_YVU422:
2253 case DRM_FORMAT_YUV444:
2254 case DRM_FORMAT_YVU444:
2255 return 0;
2256 default:
2257 return -EINVAL;
2258 }
2259 }
2260
framebuffer_check(const struct drm_mode_fb_cmd2 * r)2261 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2262 {
2263 int ret, hsub, vsub, num_planes, i;
2264
2265 ret = format_check(r);
2266 if (ret) {
2267 DRM_DEBUG_KMS("bad framebuffer format 0x%08x\n", r->pixel_format);
2268 return ret;
2269 }
2270
2271 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2272 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2273 num_planes = drm_format_num_planes(r->pixel_format);
2274
2275 if (r->width == 0 || r->width % hsub) {
2276 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2277 return -EINVAL;
2278 }
2279
2280 if (r->height == 0 || r->height % vsub) {
2281 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2282 return -EINVAL;
2283 }
2284
2285 for (i = 0; i < num_planes; i++) {
2286 unsigned int width = r->width / (i != 0 ? hsub : 1);
2287 unsigned int height = r->height / (i != 0 ? vsub : 1);
2288 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2289
2290 if (!r->handles[i]) {
2291 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2292 return -EINVAL;
2293 }
2294
2295 if ((uint64_t) width * cpp > UINT_MAX)
2296 return -ERANGE;
2297
2298 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2299 return -ERANGE;
2300
2301 if (r->pitches[i] < width * cpp) {
2302 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2303 return -EINVAL;
2304 }
2305 }
2306
2307 return 0;
2308 }
2309
2310 /**
2311 * drm_mode_addfb2 - add an FB to the graphics configuration
2312 * @inode: inode from the ioctl
2313 * @filp: file * from the ioctl
2314 * @cmd: cmd from ioctl
2315 * @arg: arg from ioctl
2316 *
2317 * LOCKING:
2318 * Takes mode config lock.
2319 *
2320 * Add a new FB to the specified CRTC, given a user request with format.
2321 *
2322 * Called by the user via ioctl.
2323 *
2324 * RETURNS:
2325 * Zero on success, errno on failure.
2326 */
drm_mode_addfb2(struct drm_device * dev,void * data,struct drm_file * file_priv)2327 int drm_mode_addfb2(struct drm_device *dev,
2328 void *data, struct drm_file *file_priv)
2329 {
2330 struct drm_mode_fb_cmd2 *r = data;
2331 struct drm_mode_config *config = &dev->mode_config;
2332 struct drm_framebuffer *fb;
2333 int ret;
2334
2335 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2336 return -EINVAL;
2337
2338 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2339 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2340 return -EINVAL;
2341 }
2342
2343 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2344 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2345 r->width, config->min_width, config->max_width);
2346 return -EINVAL;
2347 }
2348 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2349 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2350 r->height, config->min_height, config->max_height);
2351 return -EINVAL;
2352 }
2353
2354 ret = framebuffer_check(r);
2355 if (ret)
2356 return ret;
2357
2358 sx_xlock(&dev->mode_config.mutex);
2359
2360 ret = dev->mode_config.funcs->fb_create(dev, file_priv, r, &fb);
2361 if (ret != 0) {
2362 DRM_DEBUG_KMS("could not create framebuffer\n");
2363 goto out;
2364 }
2365
2366 r->fb_id = fb->base.id;
2367 list_add(&fb->filp_head, &file_priv->fbs);
2368 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2369
2370 out:
2371 sx_xunlock(&dev->mode_config.mutex);
2372 return ret;
2373 }
2374
2375 /**
2376 * drm_mode_rmfb - remove an FB from the configuration
2377 * @inode: inode from the ioctl
2378 * @filp: file * from the ioctl
2379 * @cmd: cmd from ioctl
2380 * @arg: arg from ioctl
2381 *
2382 * LOCKING:
2383 * Takes mode config lock.
2384 *
2385 * Remove the FB specified by the user.
2386 *
2387 * Called by the user via ioctl.
2388 *
2389 * RETURNS:
2390 * Zero on success, errno on failure.
2391 */
drm_mode_rmfb(struct drm_device * dev,void * data,struct drm_file * file_priv)2392 int drm_mode_rmfb(struct drm_device *dev,
2393 void *data, struct drm_file *file_priv)
2394 {
2395 struct drm_mode_object *obj;
2396 struct drm_framebuffer *fb = NULL;
2397 struct drm_framebuffer *fbl = NULL;
2398 uint32_t *id = data;
2399 int ret = 0;
2400 int found = 0;
2401
2402 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2403 return -EINVAL;
2404
2405 sx_xlock(&dev->mode_config.mutex);
2406 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
2407 /* TODO check that we really get a framebuffer back. */
2408 if (!obj) {
2409 ret = -EINVAL;
2410 goto out;
2411 }
2412 fb = obj_to_fb(obj);
2413
2414 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2415 if (fb == fbl)
2416 found = 1;
2417
2418 if (!found) {
2419 ret = -EINVAL;
2420 goto out;
2421 }
2422
2423 drm_framebuffer_remove(fb);
2424
2425 out:
2426 sx_xunlock(&dev->mode_config.mutex);
2427 return ret;
2428 }
2429
2430 /**
2431 * drm_mode_getfb - get FB info
2432 * @inode: inode from the ioctl
2433 * @filp: file * from the ioctl
2434 * @cmd: cmd from ioctl
2435 * @arg: arg from ioctl
2436 *
2437 * LOCKING:
2438 * Takes mode config lock.
2439 *
2440 * Lookup the FB given its ID and return info about it.
2441 *
2442 * Called by the user via ioctl.
2443 *
2444 * RETURNS:
2445 * Zero on success, errno on failure.
2446 */
drm_mode_getfb(struct drm_device * dev,void * data,struct drm_file * file_priv)2447 int drm_mode_getfb(struct drm_device *dev,
2448 void *data, struct drm_file *file_priv)
2449 {
2450 struct drm_mode_fb_cmd *r = data;
2451 struct drm_mode_object *obj;
2452 struct drm_framebuffer *fb;
2453 int ret = 0;
2454
2455 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2456 return -EINVAL;
2457
2458 sx_xlock(&dev->mode_config.mutex);
2459 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2460 if (!obj) {
2461 ret = -EINVAL;
2462 goto out;
2463 }
2464 fb = obj_to_fb(obj);
2465
2466 r->height = fb->height;
2467 r->width = fb->width;
2468 r->depth = fb->depth;
2469 r->bpp = fb->bits_per_pixel;
2470 r->pitch = fb->pitches[0];
2471 r->handle = 0;
2472 fb->funcs->create_handle(fb, file_priv, &r->handle);
2473
2474 out:
2475 sx_xunlock(&dev->mode_config.mutex);
2476 return ret;
2477 }
2478
drm_mode_dirtyfb_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)2479 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2480 void *data, struct drm_file *file_priv)
2481 {
2482 struct drm_clip_rect __user *clips_ptr;
2483 struct drm_clip_rect *clips = NULL;
2484 struct drm_mode_fb_dirty_cmd *r = data;
2485 struct drm_mode_object *obj;
2486 struct drm_framebuffer *fb;
2487 unsigned flags;
2488 int num_clips;
2489 int ret;
2490
2491 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2492 return -EINVAL;
2493
2494 sx_xlock(&dev->mode_config.mutex);
2495 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2496 if (!obj) {
2497 ret = -EINVAL;
2498 goto out_err1;
2499 }
2500 fb = obj_to_fb(obj);
2501
2502 num_clips = r->num_clips;
2503 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2504
2505 if (!num_clips != !clips_ptr) {
2506 ret = -EINVAL;
2507 goto out_err1;
2508 }
2509
2510 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2511
2512 /* If userspace annotates copy, clips must come in pairs */
2513 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2514 ret = -EINVAL;
2515 goto out_err1;
2516 }
2517
2518 if (num_clips && clips_ptr) {
2519 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2520 ret = -EINVAL;
2521 goto out_err1;
2522 }
2523 clips = malloc(num_clips * sizeof(*clips), DRM_MEM_KMS,
2524 M_WAITOK | M_ZERO);
2525 if (!clips) {
2526 ret = -ENOMEM;
2527 goto out_err1;
2528 }
2529
2530 ret = copy_from_user(clips, clips_ptr,
2531 num_clips * sizeof(*clips));
2532 if (ret) {
2533 ret = -EFAULT;
2534 goto out_err2;
2535 }
2536 }
2537
2538 if (fb->funcs->dirty) {
2539 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
2540 clips, num_clips);
2541 } else {
2542 ret = -ENOSYS;
2543 goto out_err2;
2544 }
2545
2546 out_err2:
2547 free(clips, DRM_MEM_KMS);
2548 out_err1:
2549 sx_xunlock(&dev->mode_config.mutex);
2550 return ret;
2551 }
2552
2553
2554 /**
2555 * drm_fb_release - remove and free the FBs on this file
2556 * @filp: file * from the ioctl
2557 *
2558 * LOCKING:
2559 * Takes mode config lock.
2560 *
2561 * Destroy all the FBs associated with @filp.
2562 *
2563 * Called by the user via ioctl.
2564 *
2565 * RETURNS:
2566 * Zero on success, errno on failure.
2567 */
drm_fb_release(struct drm_file * priv)2568 void drm_fb_release(struct drm_file *priv)
2569 {
2570 struct drm_device *dev = priv->minor->dev;
2571 struct drm_framebuffer *fb, *tfb;
2572
2573 sx_xlock(&dev->mode_config.mutex);
2574 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2575 drm_framebuffer_remove(fb);
2576 }
2577 sx_xunlock(&dev->mode_config.mutex);
2578 }
2579
2580 /**
2581 * drm_mode_attachmode - add a mode to the user mode list
2582 * @dev: DRM device
2583 * @connector: connector to add the mode to
2584 * @mode: mode to add
2585 *
2586 * Add @mode to @connector's user mode list.
2587 */
drm_mode_attachmode(struct drm_device * dev,struct drm_connector * connector,struct drm_display_mode * mode)2588 static void drm_mode_attachmode(struct drm_device *dev,
2589 struct drm_connector *connector,
2590 struct drm_display_mode *mode)
2591 {
2592 list_add_tail(&mode->head, &connector->user_modes);
2593 }
2594
drm_mode_attachmode_crtc(struct drm_device * dev,struct drm_crtc * crtc,const struct drm_display_mode * mode)2595 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
2596 const struct drm_display_mode *mode)
2597 {
2598 struct drm_connector *connector;
2599 int ret = 0;
2600 struct drm_display_mode *dup_mode, *next;
2601 DRM_LIST_HEAD(list);
2602
2603 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2604 if (!connector->encoder)
2605 continue;
2606 if (connector->encoder->crtc == crtc) {
2607 dup_mode = drm_mode_duplicate(dev, mode);
2608 if (!dup_mode) {
2609 ret = -ENOMEM;
2610 goto out;
2611 }
2612 list_add_tail(&dup_mode->head, &list);
2613 }
2614 }
2615
2616 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2617 if (!connector->encoder)
2618 continue;
2619 if (connector->encoder->crtc == crtc)
2620 list_move_tail(list.next, &connector->user_modes);
2621 }
2622
2623 MPASS(!list_empty(&list));
2624
2625 out:
2626 list_for_each_entry_safe(dup_mode, next, &list, head)
2627 drm_mode_destroy(dev, dup_mode);
2628
2629 return ret;
2630 }
2631 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
2632
drm_mode_detachmode(struct drm_device * dev,struct drm_connector * connector,struct drm_display_mode * mode)2633 static int drm_mode_detachmode(struct drm_device *dev,
2634 struct drm_connector *connector,
2635 struct drm_display_mode *mode)
2636 {
2637 int found = 0;
2638 int ret = 0;
2639 struct drm_display_mode *match_mode, *t;
2640
2641 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
2642 if (drm_mode_equal(match_mode, mode)) {
2643 list_del(&match_mode->head);
2644 drm_mode_destroy(dev, match_mode);
2645 found = 1;
2646 break;
2647 }
2648 }
2649
2650 if (!found)
2651 ret = -EINVAL;
2652
2653 return ret;
2654 }
2655
drm_mode_detachmode_crtc(struct drm_device * dev,struct drm_display_mode * mode)2656 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2657 {
2658 struct drm_connector *connector;
2659
2660 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2661 drm_mode_detachmode(dev, connector, mode);
2662 }
2663 return 0;
2664 }
2665 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2666
2667 /**
2668 * drm_fb_attachmode - Attach a user mode to an connector
2669 * @inode: inode from the ioctl
2670 * @filp: file * from the ioctl
2671 * @cmd: cmd from ioctl
2672 * @arg: arg from ioctl
2673 *
2674 * This attaches a user specified mode to an connector.
2675 * Called by the user via ioctl.
2676 *
2677 * RETURNS:
2678 * Zero on success, errno on failure.
2679 */
drm_mode_attachmode_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)2680 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2681 void *data, struct drm_file *file_priv)
2682 {
2683 struct drm_mode_mode_cmd *mode_cmd = data;
2684 struct drm_connector *connector;
2685 struct drm_display_mode *mode;
2686 struct drm_mode_object *obj;
2687 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2688 int ret;
2689
2690 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2691 return -EINVAL;
2692
2693 sx_xlock(&dev->mode_config.mutex);
2694
2695 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2696 if (!obj) {
2697 ret = -EINVAL;
2698 goto out;
2699 }
2700 connector = obj_to_connector(obj);
2701
2702 mode = drm_mode_create(dev);
2703 if (!mode) {
2704 ret = -ENOMEM;
2705 goto out;
2706 }
2707
2708 ret = drm_crtc_convert_umode(mode, umode);
2709 if (ret) {
2710 DRM_DEBUG_KMS("Invalid mode\n");
2711 drm_mode_destroy(dev, mode);
2712 goto out;
2713 }
2714
2715 drm_mode_attachmode(dev, connector, mode);
2716 out:
2717 sx_xunlock(&dev->mode_config.mutex);
2718 return ret;
2719 }
2720
2721
2722 /**
2723 * drm_fb_detachmode - Detach a user specified mode from an connector
2724 * @inode: inode from the ioctl
2725 * @filp: file * from the ioctl
2726 * @cmd: cmd from ioctl
2727 * @arg: arg from ioctl
2728 *
2729 * Called by the user via ioctl.
2730 *
2731 * RETURNS:
2732 * Zero on success, errno on failure.
2733 */
drm_mode_detachmode_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)2734 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2735 void *data, struct drm_file *file_priv)
2736 {
2737 struct drm_mode_object *obj;
2738 struct drm_mode_mode_cmd *mode_cmd = data;
2739 struct drm_connector *connector;
2740 struct drm_display_mode mode;
2741 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2742 int ret;
2743
2744 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2745 return -EINVAL;
2746
2747 sx_xlock(&dev->mode_config.mutex);
2748
2749 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2750 if (!obj) {
2751 ret = -EINVAL;
2752 goto out;
2753 }
2754 connector = obj_to_connector(obj);
2755
2756 ret = drm_crtc_convert_umode(&mode, umode);
2757 if (ret) {
2758 DRM_DEBUG_KMS("Invalid mode\n");
2759 goto out;
2760 }
2761
2762 ret = drm_mode_detachmode(dev, connector, &mode);
2763 out:
2764 sx_xunlock(&dev->mode_config.mutex);
2765 return ret;
2766 }
2767
drm_property_create(struct drm_device * dev,int flags,const char * name,int num_values)2768 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2769 const char *name, int num_values)
2770 {
2771 struct drm_property *property = NULL;
2772 int ret;
2773
2774 property = malloc(sizeof(struct drm_property), DRM_MEM_KMS,
2775 M_WAITOK | M_ZERO);
2776 if (!property)
2777 return NULL;
2778
2779 if (num_values) {
2780 property->values = malloc(sizeof(uint64_t)*num_values, DRM_MEM_KMS,
2781 M_WAITOK | M_ZERO);
2782 if (!property->values)
2783 goto fail;
2784 }
2785
2786 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2787 if (ret)
2788 goto fail;
2789
2790 property->flags = flags;
2791 property->num_values = num_values;
2792 INIT_LIST_HEAD(&property->enum_blob_list);
2793
2794 if (name) {
2795 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2796 property->name[DRM_PROP_NAME_LEN-1] = '\0';
2797 }
2798
2799 list_add_tail(&property->head, &dev->mode_config.property_list);
2800 return property;
2801 fail:
2802 free(property->values, DRM_MEM_KMS);
2803 free(property, DRM_MEM_KMS);
2804 return NULL;
2805 }
2806 EXPORT_SYMBOL(drm_property_create);
2807
drm_property_create_enum(struct drm_device * dev,int flags,const char * name,const struct drm_prop_enum_list * props,int num_values)2808 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
2809 const char *name,
2810 const struct drm_prop_enum_list *props,
2811 int num_values)
2812 {
2813 struct drm_property *property;
2814 int i, ret;
2815
2816 flags |= DRM_MODE_PROP_ENUM;
2817
2818 property = drm_property_create(dev, flags, name, num_values);
2819 if (!property)
2820 return NULL;
2821
2822 for (i = 0; i < num_values; i++) {
2823 ret = drm_property_add_enum(property, i,
2824 props[i].type,
2825 props[i].name);
2826 if (ret) {
2827 drm_property_destroy(dev, property);
2828 return NULL;
2829 }
2830 }
2831
2832 return property;
2833 }
2834 EXPORT_SYMBOL(drm_property_create_enum);
2835
drm_property_create_bitmask(struct drm_device * dev,int flags,const char * name,const struct drm_prop_enum_list * props,int num_values)2836 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
2837 int flags, const char *name,
2838 const struct drm_prop_enum_list *props,
2839 int num_values)
2840 {
2841 struct drm_property *property;
2842 int i, ret;
2843
2844 flags |= DRM_MODE_PROP_BITMASK;
2845
2846 property = drm_property_create(dev, flags, name, num_values);
2847 if (!property)
2848 return NULL;
2849
2850 for (i = 0; i < num_values; i++) {
2851 ret = drm_property_add_enum(property, i,
2852 props[i].type,
2853 props[i].name);
2854 if (ret) {
2855 drm_property_destroy(dev, property);
2856 return NULL;
2857 }
2858 }
2859
2860 return property;
2861 }
2862 EXPORT_SYMBOL(drm_property_create_bitmask);
2863
drm_property_create_range(struct drm_device * dev,int flags,const char * name,uint64_t min,uint64_t max)2864 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
2865 const char *name,
2866 uint64_t min, uint64_t max)
2867 {
2868 struct drm_property *property;
2869
2870 flags |= DRM_MODE_PROP_RANGE;
2871
2872 property = drm_property_create(dev, flags, name, 2);
2873 if (!property)
2874 return NULL;
2875
2876 property->values[0] = min;
2877 property->values[1] = max;
2878
2879 return property;
2880 }
2881 EXPORT_SYMBOL(drm_property_create_range);
2882
drm_property_add_enum(struct drm_property * property,int index,uint64_t value,const char * name)2883 int drm_property_add_enum(struct drm_property *property, int index,
2884 uint64_t value, const char *name)
2885 {
2886 struct drm_property_enum *prop_enum;
2887
2888 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
2889 return -EINVAL;
2890
2891 /*
2892 * Bitmask enum properties have the additional constraint of values
2893 * from 0 to 63
2894 */
2895 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
2896 return -EINVAL;
2897
2898 if (!list_empty(&property->enum_blob_list)) {
2899 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2900 if (prop_enum->value == value) {
2901 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2902 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2903 return 0;
2904 }
2905 }
2906 }
2907
2908 prop_enum = malloc(sizeof(struct drm_property_enum), DRM_MEM_KMS,
2909 M_WAITOK | M_ZERO);
2910 if (!prop_enum)
2911 return -ENOMEM;
2912
2913 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2914 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2915 prop_enum->value = value;
2916
2917 property->values[index] = value;
2918 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2919 return 0;
2920 }
2921 EXPORT_SYMBOL(drm_property_add_enum);
2922
drm_property_destroy(struct drm_device * dev,struct drm_property * property)2923 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2924 {
2925 struct drm_property_enum *prop_enum, *pt;
2926
2927 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2928 list_del(&prop_enum->head);
2929 free(prop_enum, DRM_MEM_KMS);
2930 }
2931
2932 if (property->num_values)
2933 free(property->values, DRM_MEM_KMS);
2934 drm_mode_object_put(dev, &property->base);
2935 list_del(&property->head);
2936 free(property, DRM_MEM_KMS);
2937 }
2938 EXPORT_SYMBOL(drm_property_destroy);
2939
drm_object_attach_property(struct drm_mode_object * obj,struct drm_property * property,uint64_t init_val)2940 void drm_object_attach_property(struct drm_mode_object *obj,
2941 struct drm_property *property,
2942 uint64_t init_val)
2943 {
2944 int count = obj->properties->count;
2945
2946 if (count == DRM_OBJECT_MAX_PROPERTY) {
2947 DRM_WARNING("Failed to attach object property (type: 0x%x). Please "
2948 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
2949 "you see this message on the same object type.\n",
2950 obj->type);
2951 return;
2952 }
2953
2954 obj->properties->ids[count] = property->base.id;
2955 obj->properties->values[count] = init_val;
2956 obj->properties->count++;
2957 }
2958 EXPORT_SYMBOL(drm_object_attach_property);
2959
drm_object_property_set_value(struct drm_mode_object * obj,struct drm_property * property,uint64_t val)2960 int drm_object_property_set_value(struct drm_mode_object *obj,
2961 struct drm_property *property, uint64_t val)
2962 {
2963 int i;
2964
2965 for (i = 0; i < obj->properties->count; i++) {
2966 if (obj->properties->ids[i] == property->base.id) {
2967 obj->properties->values[i] = val;
2968 return 0;
2969 }
2970 }
2971
2972 return -EINVAL;
2973 }
2974 EXPORT_SYMBOL(drm_object_property_set_value);
2975
drm_object_property_get_value(struct drm_mode_object * obj,struct drm_property * property,uint64_t * val)2976 int drm_object_property_get_value(struct drm_mode_object *obj,
2977 struct drm_property *property, uint64_t *val)
2978 {
2979 int i;
2980
2981 for (i = 0; i < obj->properties->count; i++) {
2982 if (obj->properties->ids[i] == property->base.id) {
2983 *val = obj->properties->values[i];
2984 return 0;
2985 }
2986 }
2987
2988 return -EINVAL;
2989 }
2990 EXPORT_SYMBOL(drm_object_property_get_value);
2991
drm_mode_getproperty_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)2992 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2993 void *data, struct drm_file *file_priv)
2994 {
2995 struct drm_mode_object *obj;
2996 struct drm_mode_get_property *out_resp = data;
2997 struct drm_property *property;
2998 int enum_count = 0;
2999 int blob_count = 0;
3000 int value_count = 0;
3001 int ret = 0, i;
3002 int copied;
3003 struct drm_property_enum *prop_enum;
3004 struct drm_mode_property_enum __user *enum_ptr;
3005 struct drm_property_blob *prop_blob;
3006 uint32_t __user *blob_id_ptr;
3007 uint64_t __user *values_ptr;
3008 uint32_t __user *blob_length_ptr;
3009
3010 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3011 return -EINVAL;
3012
3013 sx_xlock(&dev->mode_config.mutex);
3014 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
3015 if (!obj) {
3016 ret = -EINVAL;
3017 goto done;
3018 }
3019 property = obj_to_property(obj);
3020
3021 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3022 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3023 enum_count++;
3024 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3025 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3026 blob_count++;
3027 }
3028
3029 value_count = property->num_values;
3030
3031 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3032 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3033 out_resp->flags = property->flags;
3034
3035 if ((out_resp->count_values >= value_count) && value_count) {
3036 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3037 for (i = 0; i < value_count; i++) {
3038 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3039 ret = -EFAULT;
3040 goto done;
3041 }
3042 }
3043 }
3044 out_resp->count_values = value_count;
3045
3046 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3047 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3048 copied = 0;
3049 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3050 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3051
3052 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3053 ret = -EFAULT;
3054 goto done;
3055 }
3056
3057 if (copy_to_user(&enum_ptr[copied].name,
3058 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3059 ret = -EFAULT;
3060 goto done;
3061 }
3062 copied++;
3063 }
3064 }
3065 out_resp->count_enum_blobs = enum_count;
3066 }
3067
3068 if (property->flags & DRM_MODE_PROP_BLOB) {
3069 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3070 copied = 0;
3071 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3072 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3073
3074 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3075 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3076 ret = -EFAULT;
3077 goto done;
3078 }
3079
3080 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3081 ret = -EFAULT;
3082 goto done;
3083 }
3084
3085 copied++;
3086 }
3087 }
3088 out_resp->count_enum_blobs = blob_count;
3089 }
3090 done:
3091 sx_xunlock(&dev->mode_config.mutex);
3092 return ret;
3093 }
3094
drm_property_create_blob(struct drm_device * dev,int length,void * data)3095 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3096 void *data)
3097 {
3098 struct drm_property_blob *blob;
3099 int ret;
3100
3101 if (!length || !data)
3102 return NULL;
3103
3104 blob = malloc(sizeof(struct drm_property_blob)+length, DRM_MEM_KMS,
3105 M_WAITOK | M_ZERO);
3106 if (!blob)
3107 return NULL;
3108
3109 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3110 if (ret) {
3111 free(blob, DRM_MEM_KMS);
3112 return NULL;
3113 }
3114
3115 blob->length = length;
3116
3117 memcpy(blob->data, data, length);
3118
3119 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3120 return blob;
3121 }
3122
drm_property_destroy_blob(struct drm_device * dev,struct drm_property_blob * blob)3123 static void drm_property_destroy_blob(struct drm_device *dev,
3124 struct drm_property_blob *blob)
3125 {
3126 drm_mode_object_put(dev, &blob->base);
3127 list_del(&blob->head);
3128 free(blob, DRM_MEM_KMS);
3129 }
3130
drm_mode_getblob_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3131 int drm_mode_getblob_ioctl(struct drm_device *dev,
3132 void *data, struct drm_file *file_priv)
3133 {
3134 struct drm_mode_object *obj;
3135 struct drm_mode_get_blob *out_resp = data;
3136 struct drm_property_blob *blob;
3137 int ret = 0;
3138 void __user *blob_ptr;
3139
3140 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3141 return -EINVAL;
3142
3143 sx_xlock(&dev->mode_config.mutex);
3144 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3145 if (!obj) {
3146 ret = -EINVAL;
3147 goto done;
3148 }
3149 blob = obj_to_blob(obj);
3150
3151 if (out_resp->length == blob->length) {
3152 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3153 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3154 ret = -EFAULT;
3155 goto done;
3156 }
3157 }
3158 out_resp->length = blob->length;
3159
3160 done:
3161 sx_xunlock(&dev->mode_config.mutex);
3162 return ret;
3163 }
3164
drm_mode_connector_update_edid_property(struct drm_connector * connector,struct edid * edid)3165 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3166 struct edid *edid)
3167 {
3168 struct drm_device *dev = connector->dev;
3169 int ret, size;
3170
3171 if (connector->edid_blob_ptr)
3172 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3173
3174 /* Delete edid, when there is none. */
3175 if (!edid) {
3176 connector->edid_blob_ptr = NULL;
3177 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3178 return ret;
3179 }
3180
3181 size = EDID_LENGTH * (1 + edid->extensions);
3182 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3183 size, edid);
3184 if (!connector->edid_blob_ptr)
3185 return -EINVAL;
3186
3187 ret = drm_object_property_set_value(&connector->base,
3188 dev->mode_config.edid_property,
3189 connector->edid_blob_ptr->base.id);
3190
3191 return ret;
3192 }
3193 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3194
drm_property_change_is_valid(struct drm_property * property,uint64_t value)3195 static bool drm_property_change_is_valid(struct drm_property *property,
3196 uint64_t value)
3197 {
3198 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3199 return false;
3200 if (property->flags & DRM_MODE_PROP_RANGE) {
3201 if (value < property->values[0] || value > property->values[1])
3202 return false;
3203 return true;
3204 } else if (property->flags & DRM_MODE_PROP_BITMASK) {
3205 int i;
3206 uint64_t valid_mask = 0;
3207 for (i = 0; i < property->num_values; i++)
3208 valid_mask |= (1ULL << property->values[i]);
3209 return !(value & ~valid_mask);
3210 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3211 /* Only the driver knows */
3212 return true;
3213 } else {
3214 int i;
3215 for (i = 0; i < property->num_values; i++)
3216 if (property->values[i] == value)
3217 return true;
3218 return false;
3219 }
3220 }
3221
drm_mode_connector_property_set_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3222 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3223 void *data, struct drm_file *file_priv)
3224 {
3225 struct drm_mode_connector_set_property *conn_set_prop = data;
3226 struct drm_mode_obj_set_property obj_set_prop = {
3227 .value = conn_set_prop->value,
3228 .prop_id = conn_set_prop->prop_id,
3229 .obj_id = conn_set_prop->connector_id,
3230 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3231 };
3232
3233 /* It does all the locking and checking we need */
3234 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3235 }
3236
drm_mode_connector_set_obj_prop(struct drm_mode_object * obj,struct drm_property * property,uint64_t value)3237 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3238 struct drm_property *property,
3239 uint64_t value)
3240 {
3241 int ret = -EINVAL;
3242 struct drm_connector *connector = obj_to_connector(obj);
3243
3244 /* Do DPMS ourselves */
3245 if (property == connector->dev->mode_config.dpms_property) {
3246 if (connector->funcs->dpms)
3247 (*connector->funcs->dpms)(connector, (int)value);
3248 ret = 0;
3249 } else if (connector->funcs->set_property)
3250 ret = connector->funcs->set_property(connector, property, value);
3251
3252 /* store the property value if successful */
3253 if (!ret)
3254 drm_object_property_set_value(&connector->base, property, value);
3255 return ret;
3256 }
3257
drm_mode_crtc_set_obj_prop(struct drm_mode_object * obj,struct drm_property * property,uint64_t value)3258 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3259 struct drm_property *property,
3260 uint64_t value)
3261 {
3262 int ret = -EINVAL;
3263 struct drm_crtc *crtc = obj_to_crtc(obj);
3264
3265 if (crtc->funcs->set_property)
3266 ret = crtc->funcs->set_property(crtc, property, value);
3267 if (!ret)
3268 drm_object_property_set_value(obj, property, value);
3269
3270 return ret;
3271 }
3272
drm_mode_plane_set_obj_prop(struct drm_mode_object * obj,struct drm_property * property,uint64_t value)3273 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3274 struct drm_property *property,
3275 uint64_t value)
3276 {
3277 int ret = -EINVAL;
3278 struct drm_plane *plane = obj_to_plane(obj);
3279
3280 if (plane->funcs->set_property)
3281 ret = plane->funcs->set_property(plane, property, value);
3282 if (!ret)
3283 drm_object_property_set_value(obj, property, value);
3284
3285 return ret;
3286 }
3287
drm_mode_obj_get_properties_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3288 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3289 struct drm_file *file_priv)
3290 {
3291 struct drm_mode_obj_get_properties *arg = data;
3292 struct drm_mode_object *obj;
3293 int ret = 0;
3294 int i;
3295 int copied = 0;
3296 int props_count = 0;
3297 uint32_t __user *props_ptr;
3298 uint64_t __user *prop_values_ptr;
3299
3300 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3301 return -EINVAL;
3302
3303 sx_xlock(&dev->mode_config.mutex);
3304
3305 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3306 if (!obj) {
3307 ret = -EINVAL;
3308 goto out;
3309 }
3310 if (!obj->properties) {
3311 ret = -EINVAL;
3312 goto out;
3313 }
3314
3315 props_count = obj->properties->count;
3316
3317 /* This ioctl is called twice, once to determine how much space is
3318 * needed, and the 2nd time to fill it. */
3319 if ((arg->count_props >= props_count) && props_count) {
3320 copied = 0;
3321 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3322 prop_values_ptr = (uint64_t __user *)(unsigned long)
3323 (arg->prop_values_ptr);
3324 for (i = 0; i < props_count; i++) {
3325 if (put_user(obj->properties->ids[i],
3326 props_ptr + copied)) {
3327 ret = -EFAULT;
3328 goto out;
3329 }
3330 if (put_user(obj->properties->values[i],
3331 prop_values_ptr + copied)) {
3332 ret = -EFAULT;
3333 goto out;
3334 }
3335 copied++;
3336 }
3337 }
3338 arg->count_props = props_count;
3339 out:
3340 sx_xunlock(&dev->mode_config.mutex);
3341 return ret;
3342 }
3343
drm_mode_obj_set_property_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3344 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3345 struct drm_file *file_priv)
3346 {
3347 struct drm_mode_obj_set_property *arg = data;
3348 struct drm_mode_object *arg_obj;
3349 struct drm_mode_object *prop_obj;
3350 struct drm_property *property;
3351 int ret = -EINVAL;
3352 int i;
3353
3354 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3355 return -EINVAL;
3356
3357 sx_xlock(&dev->mode_config.mutex);
3358
3359 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3360 if (!arg_obj)
3361 goto out;
3362 if (!arg_obj->properties)
3363 goto out;
3364
3365 for (i = 0; i < arg_obj->properties->count; i++)
3366 if (arg_obj->properties->ids[i] == arg->prop_id)
3367 break;
3368
3369 if (i == arg_obj->properties->count)
3370 goto out;
3371
3372 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3373 DRM_MODE_OBJECT_PROPERTY);
3374 if (!prop_obj)
3375 goto out;
3376 property = obj_to_property(prop_obj);
3377
3378 if (!drm_property_change_is_valid(property, arg->value))
3379 goto out;
3380
3381 switch (arg_obj->type) {
3382 case DRM_MODE_OBJECT_CONNECTOR:
3383 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3384 arg->value);
3385 break;
3386 case DRM_MODE_OBJECT_CRTC:
3387 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3388 break;
3389 case DRM_MODE_OBJECT_PLANE:
3390 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3391 break;
3392 }
3393
3394 out:
3395 sx_xunlock(&dev->mode_config.mutex);
3396 return ret;
3397 }
3398
drm_mode_connector_attach_encoder(struct drm_connector * connector,struct drm_encoder * encoder)3399 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3400 struct drm_encoder *encoder)
3401 {
3402 int i;
3403
3404 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3405 if (connector->encoder_ids[i] == 0) {
3406 connector->encoder_ids[i] = encoder->base.id;
3407 return 0;
3408 }
3409 }
3410 return -ENOMEM;
3411 }
3412 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3413
drm_mode_connector_detach_encoder(struct drm_connector * connector,struct drm_encoder * encoder)3414 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
3415 struct drm_encoder *encoder)
3416 {
3417 int i;
3418 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3419 if (connector->encoder_ids[i] == encoder->base.id) {
3420 connector->encoder_ids[i] = 0;
3421 if (connector->encoder == encoder)
3422 connector->encoder = NULL;
3423 break;
3424 }
3425 }
3426 }
3427 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
3428
drm_mode_crtc_set_gamma_size(struct drm_crtc * crtc,int gamma_size)3429 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3430 int gamma_size)
3431 {
3432 crtc->gamma_size = gamma_size;
3433
3434 crtc->gamma_store = malloc(gamma_size * sizeof(uint16_t) * 3,
3435 DRM_MEM_KMS, M_WAITOK | M_ZERO);
3436 if (!crtc->gamma_store) {
3437 crtc->gamma_size = 0;
3438 return -ENOMEM;
3439 }
3440
3441 return 0;
3442 }
3443 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3444
drm_mode_gamma_set_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3445 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3446 void *data, struct drm_file *file_priv)
3447 {
3448 struct drm_mode_crtc_lut *crtc_lut = data;
3449 struct drm_mode_object *obj;
3450 struct drm_crtc *crtc;
3451 void *r_base, *g_base, *b_base;
3452 int size;
3453 int ret = 0;
3454
3455 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3456 return -EINVAL;
3457
3458 sx_xlock(&dev->mode_config.mutex);
3459 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3460 if (!obj) {
3461 ret = -EINVAL;
3462 goto out;
3463 }
3464 crtc = obj_to_crtc(obj);
3465
3466 if (crtc->funcs->gamma_set == NULL) {
3467 ret = -ENOSYS;
3468 goto out;
3469 }
3470
3471 /* memcpy into gamma store */
3472 if (crtc_lut->gamma_size != crtc->gamma_size) {
3473 ret = -EINVAL;
3474 goto out;
3475 }
3476
3477 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3478 r_base = crtc->gamma_store;
3479 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
3480 ret = -EFAULT;
3481 goto out;
3482 }
3483
3484 g_base = (char *)r_base + size;
3485 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
3486 ret = -EFAULT;
3487 goto out;
3488 }
3489
3490 b_base = (char *)g_base + size;
3491 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
3492 ret = -EFAULT;
3493 goto out;
3494 }
3495
3496 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
3497
3498 out:
3499 sx_xunlock(&dev->mode_config.mutex);
3500 return ret;
3501
3502 }
3503
drm_mode_gamma_get_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3504 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
3505 void *data, struct drm_file *file_priv)
3506 {
3507 struct drm_mode_crtc_lut *crtc_lut = data;
3508 struct drm_mode_object *obj;
3509 struct drm_crtc *crtc;
3510 void *r_base, *g_base, *b_base;
3511 int size;
3512 int ret = 0;
3513
3514 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3515 return -EINVAL;
3516
3517 sx_xlock(&dev->mode_config.mutex);
3518 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3519 if (!obj) {
3520 ret = -EINVAL;
3521 goto out;
3522 }
3523 crtc = obj_to_crtc(obj);
3524
3525 /* memcpy into gamma store */
3526 if (crtc_lut->gamma_size != crtc->gamma_size) {
3527 ret = -EINVAL;
3528 goto out;
3529 }
3530
3531 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3532 r_base = crtc->gamma_store;
3533 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
3534 ret = -EFAULT;
3535 goto out;
3536 }
3537
3538 g_base = (char *)r_base + size;
3539 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
3540 ret = -EFAULT;
3541 goto out;
3542 }
3543
3544 b_base = (char *)g_base + size;
3545 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
3546 ret = -EFAULT;
3547 goto out;
3548 }
3549 out:
3550 sx_xunlock(&dev->mode_config.mutex);
3551 return ret;
3552 }
3553
3554 static void
free_vblank_event(void * arg)3555 free_vblank_event(void *arg)
3556 {
3557
3558 free(arg, DRM_MEM_KMS);
3559 }
3560
drm_mode_page_flip_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3561 int drm_mode_page_flip_ioctl(struct drm_device *dev,
3562 void *data, struct drm_file *file_priv)
3563 {
3564 struct drm_mode_crtc_page_flip *page_flip = data;
3565 struct drm_mode_object *obj;
3566 struct drm_crtc *crtc;
3567 struct drm_framebuffer *fb;
3568 struct drm_pending_vblank_event *e = NULL;
3569 #ifdef __linux__
3570 unsigned long flags;
3571 #endif
3572 int hdisplay, vdisplay;
3573 int ret = -EINVAL;
3574
3575 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
3576 page_flip->reserved != 0)
3577 return -EINVAL;
3578
3579 sx_xlock(&dev->mode_config.mutex);
3580 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
3581 if (!obj)
3582 goto out;
3583 crtc = obj_to_crtc(obj);
3584
3585 if (crtc->fb == NULL) {
3586 /* The framebuffer is currently unbound, presumably
3587 * due to a hotplug event, that userspace has not
3588 * yet discovered.
3589 */
3590 ret = -EBUSY;
3591 goto out;
3592 }
3593
3594 if (crtc->funcs->page_flip == NULL)
3595 goto out;
3596
3597 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
3598 if (!obj)
3599 goto out;
3600 fb = obj_to_fb(obj);
3601
3602 hdisplay = crtc->mode.hdisplay;
3603 vdisplay = crtc->mode.vdisplay;
3604
3605 if (crtc->invert_dimensions) {
3606 int tmp;
3607 tmp = vdisplay;
3608 vdisplay = hdisplay;
3609 hdisplay = tmp;
3610 }
3611
3612 if (hdisplay > fb->width ||
3613 vdisplay > fb->height ||
3614 crtc->x > fb->width - hdisplay ||
3615 crtc->y > fb->height - vdisplay) {
3616 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
3617 fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y,
3618 crtc->invert_dimensions ? " (inverted)" : "");
3619 ret = -ENOSPC;
3620 goto out;
3621 }
3622
3623 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3624 ret = -ENOMEM;
3625 mtx_lock(&dev->event_lock);
3626 if (file_priv->event_space < sizeof e->event) {
3627 mtx_unlock(&dev->event_lock);
3628 goto out;
3629 }
3630 file_priv->event_space -= sizeof e->event;
3631 mtx_unlock(&dev->event_lock);
3632
3633 e = malloc(sizeof *e, DRM_MEM_KMS, M_WAITOK | M_ZERO);
3634 if (e == NULL) {
3635 mtx_lock(&dev->event_lock);
3636 file_priv->event_space += sizeof e->event;
3637 mtx_unlock(&dev->event_lock);
3638 goto out;
3639 }
3640
3641 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
3642 e->event.base.length = sizeof e->event;
3643 e->event.user_data = page_flip->user_data;
3644 e->base.event = &e->event.base;
3645 e->base.file_priv = file_priv;
3646 e->base.destroy =
3647 (void (*) (struct drm_pending_event *)) free_vblank_event;
3648 }
3649
3650 ret = crtc->funcs->page_flip(crtc, fb, e);
3651 if (ret) {
3652 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3653 mtx_lock(&dev->event_lock);
3654 file_priv->event_space += sizeof e->event;
3655 mtx_unlock(&dev->event_lock);
3656 free(e, DRM_MEM_KMS);
3657 }
3658 }
3659
3660 out:
3661 sx_xunlock(&dev->mode_config.mutex);
3662 return ret;
3663 }
3664
drm_mode_config_reset(struct drm_device * dev)3665 void drm_mode_config_reset(struct drm_device *dev)
3666 {
3667 struct drm_crtc *crtc;
3668 struct drm_encoder *encoder;
3669 struct drm_connector *connector;
3670
3671 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
3672 if (crtc->funcs->reset)
3673 crtc->funcs->reset(crtc);
3674
3675 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
3676 if (encoder->funcs->reset)
3677 encoder->funcs->reset(encoder);
3678
3679 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
3680 connector->status = connector_status_unknown;
3681
3682 if (connector->funcs->reset)
3683 connector->funcs->reset(connector);
3684 }
3685 }
3686 EXPORT_SYMBOL(drm_mode_config_reset);
3687
drm_mode_create_dumb_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3688 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
3689 void *data, struct drm_file *file_priv)
3690 {
3691 struct drm_mode_create_dumb *args = data;
3692
3693 if (!dev->driver->dumb_create)
3694 return -ENOSYS;
3695 return dev->driver->dumb_create(file_priv, dev, args);
3696 }
3697
drm_mode_mmap_dumb_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3698 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
3699 void *data, struct drm_file *file_priv)
3700 {
3701 struct drm_mode_map_dumb *args = data;
3702
3703 /* call driver ioctl to get mmap offset */
3704 if (!dev->driver->dumb_map_offset)
3705 return -ENOSYS;
3706
3707 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
3708 }
3709
drm_mode_destroy_dumb_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)3710 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
3711 void *data, struct drm_file *file_priv)
3712 {
3713 struct drm_mode_destroy_dumb *args = data;
3714
3715 if (!dev->driver->dumb_destroy)
3716 return -ENOSYS;
3717
3718 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
3719 }
3720
3721 /*
3722 * Just need to support RGB formats here for compat with code that doesn't
3723 * use pixel formats directly yet.
3724 */
drm_fb_get_bpp_depth(uint32_t format,unsigned int * depth,int * bpp)3725 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
3726 int *bpp)
3727 {
3728 switch (format) {
3729 case DRM_FORMAT_C8:
3730 case DRM_FORMAT_RGB332:
3731 case DRM_FORMAT_BGR233:
3732 *depth = 8;
3733 *bpp = 8;
3734 break;
3735 case DRM_FORMAT_XRGB1555:
3736 case DRM_FORMAT_XBGR1555:
3737 case DRM_FORMAT_RGBX5551:
3738 case DRM_FORMAT_BGRX5551:
3739 case DRM_FORMAT_ARGB1555:
3740 case DRM_FORMAT_ABGR1555:
3741 case DRM_FORMAT_RGBA5551:
3742 case DRM_FORMAT_BGRA5551:
3743 *depth = 15;
3744 *bpp = 16;
3745 break;
3746 case DRM_FORMAT_RGB565:
3747 case DRM_FORMAT_BGR565:
3748 *depth = 16;
3749 *bpp = 16;
3750 break;
3751 case DRM_FORMAT_RGB888:
3752 case DRM_FORMAT_BGR888:
3753 *depth = 24;
3754 *bpp = 24;
3755 break;
3756 case DRM_FORMAT_XRGB8888:
3757 case DRM_FORMAT_XBGR8888:
3758 case DRM_FORMAT_RGBX8888:
3759 case DRM_FORMAT_BGRX8888:
3760 *depth = 24;
3761 *bpp = 32;
3762 break;
3763 case DRM_FORMAT_XRGB2101010:
3764 case DRM_FORMAT_XBGR2101010:
3765 case DRM_FORMAT_RGBX1010102:
3766 case DRM_FORMAT_BGRX1010102:
3767 case DRM_FORMAT_ARGB2101010:
3768 case DRM_FORMAT_ABGR2101010:
3769 case DRM_FORMAT_RGBA1010102:
3770 case DRM_FORMAT_BGRA1010102:
3771 *depth = 30;
3772 *bpp = 32;
3773 break;
3774 case DRM_FORMAT_ARGB8888:
3775 case DRM_FORMAT_ABGR8888:
3776 case DRM_FORMAT_RGBA8888:
3777 case DRM_FORMAT_BGRA8888:
3778 *depth = 32;
3779 *bpp = 32;
3780 break;
3781 default:
3782 DRM_DEBUG_KMS("unsupported pixel format\n");
3783 *depth = 0;
3784 *bpp = 0;
3785 break;
3786 }
3787 }
3788 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
3789
3790 /**
3791 * drm_format_num_planes - get the number of planes for format
3792 * @format: pixel format (DRM_FORMAT_*)
3793 *
3794 * RETURNS:
3795 * The number of planes used by the specified pixel format.
3796 */
drm_format_num_planes(uint32_t format)3797 int drm_format_num_planes(uint32_t format)
3798 {
3799 switch (format) {
3800 case DRM_FORMAT_YUV410:
3801 case DRM_FORMAT_YVU410:
3802 case DRM_FORMAT_YUV411:
3803 case DRM_FORMAT_YVU411:
3804 case DRM_FORMAT_YUV420:
3805 case DRM_FORMAT_YVU420:
3806 case DRM_FORMAT_YUV422:
3807 case DRM_FORMAT_YVU422:
3808 case DRM_FORMAT_YUV444:
3809 case DRM_FORMAT_YVU444:
3810 return 3;
3811 case DRM_FORMAT_NV12:
3812 case DRM_FORMAT_NV21:
3813 case DRM_FORMAT_NV16:
3814 case DRM_FORMAT_NV61:
3815 case DRM_FORMAT_NV24:
3816 case DRM_FORMAT_NV42:
3817 return 2;
3818 default:
3819 return 1;
3820 }
3821 }
3822 EXPORT_SYMBOL(drm_format_num_planes);
3823
3824 /**
3825 * drm_format_plane_cpp - determine the bytes per pixel value
3826 * @format: pixel format (DRM_FORMAT_*)
3827 * @plane: plane index
3828 *
3829 * RETURNS:
3830 * The bytes per pixel value for the specified plane.
3831 */
drm_format_plane_cpp(uint32_t format,int plane)3832 int drm_format_plane_cpp(uint32_t format, int plane)
3833 {
3834 unsigned int depth;
3835 int bpp;
3836
3837 if (plane >= drm_format_num_planes(format))
3838 return 0;
3839
3840 switch (format) {
3841 case DRM_FORMAT_YUYV:
3842 case DRM_FORMAT_YVYU:
3843 case DRM_FORMAT_UYVY:
3844 case DRM_FORMAT_VYUY:
3845 return 2;
3846 case DRM_FORMAT_NV12:
3847 case DRM_FORMAT_NV21:
3848 case DRM_FORMAT_NV16:
3849 case DRM_FORMAT_NV61:
3850 case DRM_FORMAT_NV24:
3851 case DRM_FORMAT_NV42:
3852 return plane ? 2 : 1;
3853 case DRM_FORMAT_YUV410:
3854 case DRM_FORMAT_YVU410:
3855 case DRM_FORMAT_YUV411:
3856 case DRM_FORMAT_YVU411:
3857 case DRM_FORMAT_YUV420:
3858 case DRM_FORMAT_YVU420:
3859 case DRM_FORMAT_YUV422:
3860 case DRM_FORMAT_YVU422:
3861 case DRM_FORMAT_YUV444:
3862 case DRM_FORMAT_YVU444:
3863 return 1;
3864 default:
3865 drm_fb_get_bpp_depth(format, &depth, &bpp);
3866 return bpp >> 3;
3867 }
3868 }
3869 EXPORT_SYMBOL(drm_format_plane_cpp);
3870
3871 /**
3872 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
3873 * @format: pixel format (DRM_FORMAT_*)
3874 *
3875 * RETURNS:
3876 * The horizontal chroma subsampling factor for the
3877 * specified pixel format.
3878 */
drm_format_horz_chroma_subsampling(uint32_t format)3879 int drm_format_horz_chroma_subsampling(uint32_t format)
3880 {
3881 switch (format) {
3882 case DRM_FORMAT_YUV411:
3883 case DRM_FORMAT_YVU411:
3884 case DRM_FORMAT_YUV410:
3885 case DRM_FORMAT_YVU410:
3886 return 4;
3887 case DRM_FORMAT_YUYV:
3888 case DRM_FORMAT_YVYU:
3889 case DRM_FORMAT_UYVY:
3890 case DRM_FORMAT_VYUY:
3891 case DRM_FORMAT_NV12:
3892 case DRM_FORMAT_NV21:
3893 case DRM_FORMAT_NV16:
3894 case DRM_FORMAT_NV61:
3895 case DRM_FORMAT_YUV422:
3896 case DRM_FORMAT_YVU422:
3897 case DRM_FORMAT_YUV420:
3898 case DRM_FORMAT_YVU420:
3899 return 2;
3900 default:
3901 return 1;
3902 }
3903 }
3904 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
3905
3906 /**
3907 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
3908 * @format: pixel format (DRM_FORMAT_*)
3909 *
3910 * RETURNS:
3911 * The vertical chroma subsampling factor for the
3912 * specified pixel format.
3913 */
drm_format_vert_chroma_subsampling(uint32_t format)3914 int drm_format_vert_chroma_subsampling(uint32_t format)
3915 {
3916 switch (format) {
3917 case DRM_FORMAT_YUV410:
3918 case DRM_FORMAT_YVU410:
3919 return 4;
3920 case DRM_FORMAT_YUV420:
3921 case DRM_FORMAT_YVU420:
3922 case DRM_FORMAT_NV12:
3923 case DRM_FORMAT_NV21:
3924 return 2;
3925 default:
3926 return 1;
3927 }
3928 }
3929 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
3930