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perf tests: Add framework for automated perf_event_attr tests
[linux-2.6.git] / drivers / gpu / drm / drm_crtc.c
blobef1b22144d3707af9cecddee17af4d25b9b834d1
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 <linux/list.h>
33 #include <linux/slab.h>
34 #include <linux/export.h>
35 #include <drm/drmP.h>
36 #include <drm/drm_crtc.h>
37 #include <drm/drm_edid.h>
38 #include <drm/drm_fourcc.h>
39
40 /* Avoid boilerplate. I'm tired of typing. */
41 #define DRM_ENUM_NAME_FN(fnname, list) \
42 char *fnname(int val) \
43 { \
44 int i; \
45 for (i = 0; i < ARRAY_SIZE(list); i++) { \
46 if (list[i].type == val) \
47 return list[i].name; \
48 } \
49 return "(unknown)"; \
50 }
51
52 /*
53 * Global properties
54 */
55 static struct drm_prop_enum_list drm_dpms_enum_list[] =
56 { { DRM_MODE_DPMS_ON, "On" },
57 { DRM_MODE_DPMS_STANDBY, "Standby" },
58 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
59 { DRM_MODE_DPMS_OFF, "Off" }
60 };
61
62 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
63
64 /*
65 * Optional properties
66 */
67 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
68 {
69 { DRM_MODE_SCALE_NONE, "None" },
70 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
71 { DRM_MODE_SCALE_CENTER, "Center" },
72 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
73 };
74
75 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
76 {
77 { DRM_MODE_DITHERING_OFF, "Off" },
78 { DRM_MODE_DITHERING_ON, "On" },
79 { DRM_MODE_DITHERING_AUTO, "Automatic" },
80 };
81
82 /*
83 * Non-global properties, but "required" for certain connectors.
84 */
85 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
86 {
87 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
88 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
89 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
90 };
91
92 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
93
94 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
95 {
96 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
97 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
98 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
99 };
100
101 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
102 drm_dvi_i_subconnector_enum_list)
103
104 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
105 {
106 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
107 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
108 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
109 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
110 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
111 };
112
113 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
114
115 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
116 {
117 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
118 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
119 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
120 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
121 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
122 };
123
124 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
125 drm_tv_subconnector_enum_list)
126
127 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
128 { DRM_MODE_DIRTY_OFF, "Off" },
129 { DRM_MODE_DIRTY_ON, "On" },
130 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
131 };
132
133 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
134 drm_dirty_info_enum_list)
135
136 struct drm_conn_prop_enum_list {
137 int type;
138 char *name;
139 int count;
140 };
141
142 /*
143 * Connector and encoder types.
144 */
145 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
146 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
147 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
148 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
149 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
150 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
151 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
152 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
153 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
154 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
155 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
156 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
157 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
158 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
159 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
160 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
161 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
162 };
163
164 static struct drm_prop_enum_list drm_encoder_enum_list[] =
165 { { DRM_MODE_ENCODER_NONE, "None" },
166 { DRM_MODE_ENCODER_DAC, "DAC" },
167 { DRM_MODE_ENCODER_TMDS, "TMDS" },
168 { DRM_MODE_ENCODER_LVDS, "LVDS" },
169 { DRM_MODE_ENCODER_TVDAC, "TV" },
170 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
171 };
172
173 char *drm_get_encoder_name(struct drm_encoder *encoder)
174 {
175 static char buf[32];
176
177 snprintf(buf, 32, "%s-%d",
178 drm_encoder_enum_list[encoder->encoder_type].name,
179 encoder->base.id);
180 return buf;
181 }
182 EXPORT_SYMBOL(drm_get_encoder_name);
183
184 char *drm_get_connector_name(struct drm_connector *connector)
185 {
186 static char buf[32];
187
188 snprintf(buf, 32, "%s-%d",
189 drm_connector_enum_list[connector->connector_type].name,
190 connector->connector_type_id);
191 return buf;
192 }
193 EXPORT_SYMBOL(drm_get_connector_name);
194
195 char *drm_get_connector_status_name(enum drm_connector_status status)
196 {
197 if (status == connector_status_connected)
198 return "connected";
199 else if (status == connector_status_disconnected)
200 return "disconnected";
201 else
202 return "unknown";
203 }
204
205 /**
206 * drm_mode_object_get - allocate a new identifier
207 * @dev: DRM device
208 * @ptr: object pointer, used to generate unique ID
209 * @type: object type
210 *
211 * LOCKING:
212 *
213 * Create a unique identifier based on @ptr in @dev's identifier space. Used
214 * for tracking modes, CRTCs and connectors.
215 *
216 * RETURNS:
217 * New unique (relative to other objects in @dev) integer identifier for the
218 * object.
219 */
220 static int drm_mode_object_get(struct drm_device *dev,
221 struct drm_mode_object *obj, uint32_t obj_type)
222 {
223 int new_id = 0;
224 int ret;
225
226 again:
227 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
228 DRM_ERROR("Ran out memory getting a mode number\n");
229 return -ENOMEM;
230 }
231
232 mutex_lock(&dev->mode_config.idr_mutex);
233 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
234 mutex_unlock(&dev->mode_config.idr_mutex);
235 if (ret == -EAGAIN)
236 goto again;
237 else if (ret)
238 return ret;
239
240 obj->id = new_id;
241 obj->type = obj_type;
242 return 0;
243 }
244
245 /**
246 * drm_mode_object_put - free an identifer
247 * @dev: DRM device
248 * @id: ID to free
249 *
250 * LOCKING:
251 * Caller must hold DRM mode_config lock.
252 *
253 * Free @id from @dev's unique identifier pool.
254 */
255 static void drm_mode_object_put(struct drm_device *dev,
256 struct drm_mode_object *object)
257 {
258 mutex_lock(&dev->mode_config.idr_mutex);
259 idr_remove(&dev->mode_config.crtc_idr, object->id);
260 mutex_unlock(&dev->mode_config.idr_mutex);
261 }
262
263 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
264 uint32_t id, uint32_t type)
265 {
266 struct drm_mode_object *obj = NULL;
267
268 mutex_lock(&dev->mode_config.idr_mutex);
269 obj = idr_find(&dev->mode_config.crtc_idr, id);
270 if (!obj || (obj->type != type) || (obj->id != id))
271 obj = NULL;
272 mutex_unlock(&dev->mode_config.idr_mutex);
273
274 return obj;
275 }
276 EXPORT_SYMBOL(drm_mode_object_find);
277
278 /**
279 * drm_framebuffer_init - initialize a framebuffer
280 * @dev: DRM device
281 *
282 * LOCKING:
283 * Caller must hold mode config lock.
284 *
285 * Allocates an ID for the framebuffer's parent mode object, sets its mode
286 * functions & device file and adds it to the master fd list.
287 *
288 * RETURNS:
289 * Zero on success, error code on failure.
290 */
291 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
292 const struct drm_framebuffer_funcs *funcs)
293 {
294 int ret;
295
296 kref_init(&fb->refcount);
297
298 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
299 if (ret)
300 return ret;
301
302 fb->dev = dev;
303 fb->funcs = funcs;
304 dev->mode_config.num_fb++;
305 list_add(&fb->head, &dev->mode_config.fb_list);
306
307 return 0;
308 }
309 EXPORT_SYMBOL(drm_framebuffer_init);
310
311 static void drm_framebuffer_free(struct kref *kref)
312 {
313 struct drm_framebuffer *fb =
314 container_of(kref, struct drm_framebuffer, refcount);
315 fb->funcs->destroy(fb);
316 }
317
318 /**
319 * drm_framebuffer_unreference - unref a framebuffer
320 *
321 * LOCKING:
322 * Caller must hold mode config lock.
323 */
324 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
325 {
326 struct drm_device *dev = fb->dev;
327 DRM_DEBUG("FB ID: %d\n", fb->base.id);
328 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
329 kref_put(&fb->refcount, drm_framebuffer_free);
330 }
331 EXPORT_SYMBOL(drm_framebuffer_unreference);
332
333 /**
334 * drm_framebuffer_reference - incr the fb refcnt
335 */
336 void drm_framebuffer_reference(struct drm_framebuffer *fb)
337 {
338 DRM_DEBUG("FB ID: %d\n", fb->base.id);
339 kref_get(&fb->refcount);
340 }
341 EXPORT_SYMBOL(drm_framebuffer_reference);
342
343 /**
344 * drm_framebuffer_cleanup - remove a framebuffer object
345 * @fb: framebuffer to remove
346 *
347 * LOCKING:
348 * Caller must hold mode config lock.
349 *
350 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
351 * it, setting it to NULL.
352 */
353 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
354 {
355 struct drm_device *dev = fb->dev;
356 /*
357 * This could be moved to drm_framebuffer_remove(), but for
358 * debugging is nice to keep around the list of fb's that are
359 * no longer associated w/ a drm_file but are not unreferenced
360 * yet. (i915 and omapdrm have debugfs files which will show
361 * this.)
362 */
363 drm_mode_object_put(dev, &fb->base);
364 list_del(&fb->head);
365 dev->mode_config.num_fb--;
366 }
367 EXPORT_SYMBOL(drm_framebuffer_cleanup);
368
369 /**
370 * drm_framebuffer_remove - remove and unreference a framebuffer object
371 * @fb: framebuffer to remove
372 *
373 * LOCKING:
374 * Caller must hold mode config lock.
375 *
376 * Scans all the CRTCs and planes in @dev's mode_config. If they're
377 * using @fb, removes it, setting it to NULL.
378 */
379 void drm_framebuffer_remove(struct drm_framebuffer *fb)
380 {
381 struct drm_device *dev = fb->dev;
382 struct drm_crtc *crtc;
383 struct drm_plane *plane;
384 struct drm_mode_set set;
385 int ret;
386
387 /* remove from any CRTC */
388 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
389 if (crtc->fb == fb) {
390 /* should turn off the crtc */
391 memset(&set, 0, sizeof(struct drm_mode_set));
392 set.crtc = crtc;
393 set.fb = NULL;
394 ret = crtc->funcs->set_config(&set);
395 if (ret)
396 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
397 }
398 }
399
400 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
401 if (plane->fb == fb) {
402 /* should turn off the crtc */
403 ret = plane->funcs->disable_plane(plane);
404 if (ret)
405 DRM_ERROR("failed to disable plane with busy fb\n");
406 /* disconnect the plane from the fb and crtc: */
407 plane->fb = NULL;
408 plane->crtc = NULL;
409 }
410 }
411
412 list_del(&fb->filp_head);
413
414 drm_framebuffer_unreference(fb);
415 }
416 EXPORT_SYMBOL(drm_framebuffer_remove);
417
418 /**
419 * drm_crtc_init - Initialise a new CRTC object
420 * @dev: DRM device
421 * @crtc: CRTC object to init
422 * @funcs: callbacks for the new CRTC
423 *
424 * LOCKING:
425 * Takes mode_config lock.
426 *
427 * Inits a new object created as base part of an driver crtc object.
428 *
429 * RETURNS:
430 * Zero on success, error code on failure.
431 */
432 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
433 const struct drm_crtc_funcs *funcs)
434 {
435 int ret;
436
437 crtc->dev = dev;
438 crtc->funcs = funcs;
439 crtc->invert_dimensions = false;
440
441 mutex_lock(&dev->mode_config.mutex);
442
443 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
444 if (ret)
445 goto out;
446
447 crtc->base.properties = &crtc->properties;
448
449 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
450 dev->mode_config.num_crtc++;
451
452 out:
453 mutex_unlock(&dev->mode_config.mutex);
454
455 return ret;
456 }
457 EXPORT_SYMBOL(drm_crtc_init);
458
459 /**
460 * drm_crtc_cleanup - Cleans up the core crtc usage.
461 * @crtc: CRTC to cleanup
462 *
463 * LOCKING:
464 * Caller must hold mode config lock.
465 *
466 * Cleanup @crtc. Removes from drm modesetting space
467 * does NOT free object, caller does that.
468 */
469 void drm_crtc_cleanup(struct drm_crtc *crtc)
470 {
471 struct drm_device *dev = crtc->dev;
472
473 if (crtc->gamma_store) {
474 kfree(crtc->gamma_store);
475 crtc->gamma_store = NULL;
476 }
477
478 drm_mode_object_put(dev, &crtc->base);
479 list_del(&crtc->head);
480 dev->mode_config.num_crtc--;
481 }
482 EXPORT_SYMBOL(drm_crtc_cleanup);
483
484 /**
485 * drm_mode_probed_add - add a mode to a connector's probed mode list
486 * @connector: connector the new mode
487 * @mode: mode data
488 *
489 * LOCKING:
490 * Caller must hold mode config lock.
491 *
492 * Add @mode to @connector's mode list for later use.
493 */
494 void drm_mode_probed_add(struct drm_connector *connector,
495 struct drm_display_mode *mode)
496 {
497 list_add(&mode->head, &connector->probed_modes);
498 }
499 EXPORT_SYMBOL(drm_mode_probed_add);
500
501 /**
502 * drm_mode_remove - remove and free a mode
503 * @connector: connector list to modify
504 * @mode: mode to remove
505 *
506 * LOCKING:
507 * Caller must hold mode config lock.
508 *
509 * Remove @mode from @connector's mode list, then free it.
510 */
511 void drm_mode_remove(struct drm_connector *connector,
512 struct drm_display_mode *mode)
513 {
514 list_del(&mode->head);
515 drm_mode_destroy(connector->dev, mode);
516 }
517 EXPORT_SYMBOL(drm_mode_remove);
518
519 /**
520 * drm_connector_init - Init a preallocated connector
521 * @dev: DRM device
522 * @connector: the connector to init
523 * @funcs: callbacks for this connector
524 * @name: user visible name of the connector
525 *
526 * LOCKING:
527 * Takes mode config lock.
528 *
529 * Initialises a preallocated connector. Connectors should be
530 * subclassed as part of driver connector objects.
531 *
532 * RETURNS:
533 * Zero on success, error code on failure.
534 */
535 int drm_connector_init(struct drm_device *dev,
536 struct drm_connector *connector,
537 const struct drm_connector_funcs *funcs,
538 int connector_type)
539 {
540 int ret;
541
542 mutex_lock(&dev->mode_config.mutex);
543
544 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
545 if (ret)
546 goto out;
547
548 connector->base.properties = &connector->properties;
549 connector->dev = dev;
550 connector->funcs = funcs;
551 connector->connector_type = connector_type;
552 connector->connector_type_id =
553 ++drm_connector_enum_list[connector_type].count; /* TODO */
554 INIT_LIST_HEAD(&connector->user_modes);
555 INIT_LIST_HEAD(&connector->probed_modes);
556 INIT_LIST_HEAD(&connector->modes);
557 connector->edid_blob_ptr = NULL;
558
559 list_add_tail(&connector->head, &dev->mode_config.connector_list);
560 dev->mode_config.num_connector++;
561
562 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
563 drm_connector_attach_property(connector,
564 dev->mode_config.edid_property,
565 0);
566
567 drm_connector_attach_property(connector,
568 dev->mode_config.dpms_property, 0);
569
570 out:
571 mutex_unlock(&dev->mode_config.mutex);
572
573 return ret;
574 }
575 EXPORT_SYMBOL(drm_connector_init);
576
577 /**
578 * drm_connector_cleanup - cleans up an initialised connector
579 * @connector: connector to cleanup
580 *
581 * LOCKING:
582 * Takes mode config lock.
583 *
584 * Cleans up the connector but doesn't free the object.
585 */
586 void drm_connector_cleanup(struct drm_connector *connector)
587 {
588 struct drm_device *dev = connector->dev;
589 struct drm_display_mode *mode, *t;
590
591 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
592 drm_mode_remove(connector, mode);
593
594 list_for_each_entry_safe(mode, t, &connector->modes, head)
595 drm_mode_remove(connector, mode);
596
597 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
598 drm_mode_remove(connector, mode);
599
600 mutex_lock(&dev->mode_config.mutex);
601 drm_mode_object_put(dev, &connector->base);
602 list_del(&connector->head);
603 dev->mode_config.num_connector--;
604 mutex_unlock(&dev->mode_config.mutex);
605 }
606 EXPORT_SYMBOL(drm_connector_cleanup);
607
608 void drm_connector_unplug_all(struct drm_device *dev)
609 {
610 struct drm_connector *connector;
611
612 /* taking the mode config mutex ends up in a clash with sysfs */
613 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
614 drm_sysfs_connector_remove(connector);
615
616 }
617 EXPORT_SYMBOL(drm_connector_unplug_all);
618
619 int drm_encoder_init(struct drm_device *dev,
620 struct drm_encoder *encoder,
621 const struct drm_encoder_funcs *funcs,
622 int encoder_type)
623 {
624 int ret;
625
626 mutex_lock(&dev->mode_config.mutex);
627
628 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
629 if (ret)
630 goto out;
631
632 encoder->dev = dev;
633 encoder->encoder_type = encoder_type;
634 encoder->funcs = funcs;
635
636 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
637 dev->mode_config.num_encoder++;
638
639 out:
640 mutex_unlock(&dev->mode_config.mutex);
641
642 return ret;
643 }
644 EXPORT_SYMBOL(drm_encoder_init);
645
646 void drm_encoder_cleanup(struct drm_encoder *encoder)
647 {
648 struct drm_device *dev = encoder->dev;
649 mutex_lock(&dev->mode_config.mutex);
650 drm_mode_object_put(dev, &encoder->base);
651 list_del(&encoder->head);
652 dev->mode_config.num_encoder--;
653 mutex_unlock(&dev->mode_config.mutex);
654 }
655 EXPORT_SYMBOL(drm_encoder_cleanup);
656
657 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
658 unsigned long possible_crtcs,
659 const struct drm_plane_funcs *funcs,
660 const uint32_t *formats, uint32_t format_count,
661 bool priv)
662 {
663 int ret;
664
665 mutex_lock(&dev->mode_config.mutex);
666
667 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
668 if (ret)
669 goto out;
670
671 plane->base.properties = &plane->properties;
672 plane->dev = dev;
673 plane->funcs = funcs;
674 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
675 GFP_KERNEL);
676 if (!plane->format_types) {
677 DRM_DEBUG_KMS("out of memory when allocating plane\n");
678 drm_mode_object_put(dev, &plane->base);
679 ret = -ENOMEM;
680 goto out;
681 }
682
683 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
684 plane->format_count = format_count;
685 plane->possible_crtcs = possible_crtcs;
686
687 /* private planes are not exposed to userspace, but depending on
688 * display hardware, might be convenient to allow sharing programming
689 * for the scanout engine with the crtc implementation.
690 */
691 if (!priv) {
692 list_add_tail(&plane->head, &dev->mode_config.plane_list);
693 dev->mode_config.num_plane++;
694 } else {
695 INIT_LIST_HEAD(&plane->head);
696 }
697
698 out:
699 mutex_unlock(&dev->mode_config.mutex);
700
701 return ret;
702 }
703 EXPORT_SYMBOL(drm_plane_init);
704
705 void drm_plane_cleanup(struct drm_plane *plane)
706 {
707 struct drm_device *dev = plane->dev;
708
709 mutex_lock(&dev->mode_config.mutex);
710 kfree(plane->format_types);
711 drm_mode_object_put(dev, &plane->base);
712 /* if not added to a list, it must be a private plane */
713 if (!list_empty(&plane->head)) {
714 list_del(&plane->head);
715 dev->mode_config.num_plane--;
716 }
717 mutex_unlock(&dev->mode_config.mutex);
718 }
719 EXPORT_SYMBOL(drm_plane_cleanup);
720
721 /**
722 * drm_mode_create - create a new display mode
723 * @dev: DRM device
724 *
725 * LOCKING:
726 * Caller must hold DRM mode_config lock.
727 *
728 * Create a new drm_display_mode, give it an ID, and return it.
729 *
730 * RETURNS:
731 * Pointer to new mode on success, NULL on error.
732 */
733 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
734 {
735 struct drm_display_mode *nmode;
736
737 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
738 if (!nmode)
739 return NULL;
740
741 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) {
742 kfree(nmode);
743 return NULL;
744 }
745
746 return nmode;
747 }
748 EXPORT_SYMBOL(drm_mode_create);
749
750 /**
751 * drm_mode_destroy - remove a mode
752 * @dev: DRM device
753 * @mode: mode to remove
754 *
755 * LOCKING:
756 * Caller must hold mode config lock.
757 *
758 * Free @mode's unique identifier, then free it.
759 */
760 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
761 {
762 if (!mode)
763 return;
764
765 drm_mode_object_put(dev, &mode->base);
766
767 kfree(mode);
768 }
769 EXPORT_SYMBOL(drm_mode_destroy);
770
771 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
772 {
773 struct drm_property *edid;
774 struct drm_property *dpms;
775
776 /*
777 * Standard properties (apply to all connectors)
778 */
779 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
780 DRM_MODE_PROP_IMMUTABLE,
781 "EDID", 0);
782 dev->mode_config.edid_property = edid;
783
784 dpms = drm_property_create_enum(dev, 0,
785 "DPMS", drm_dpms_enum_list,
786 ARRAY_SIZE(drm_dpms_enum_list));
787 dev->mode_config.dpms_property = dpms;
788
789 return 0;
790 }
791
792 /**
793 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
794 * @dev: DRM device
795 *
796 * Called by a driver the first time a DVI-I connector is made.
797 */
798 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
799 {
800 struct drm_property *dvi_i_selector;
801 struct drm_property *dvi_i_subconnector;
802
803 if (dev->mode_config.dvi_i_select_subconnector_property)
804 return 0;
805
806 dvi_i_selector =
807 drm_property_create_enum(dev, 0,
808 "select subconnector",
809 drm_dvi_i_select_enum_list,
810 ARRAY_SIZE(drm_dvi_i_select_enum_list));
811 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
812
813 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
814 "subconnector",
815 drm_dvi_i_subconnector_enum_list,
816 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
817 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
818
819 return 0;
820 }
821 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
822
823 /**
824 * drm_create_tv_properties - create TV specific connector properties
825 * @dev: DRM device
826 * @num_modes: number of different TV formats (modes) supported
827 * @modes: array of pointers to strings containing name of each format
828 *
829 * Called by a driver's TV initialization routine, this function creates
830 * the TV specific connector properties for a given device. Caller is
831 * responsible for allocating a list of format names and passing them to
832 * this routine.
833 */
834 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
835 char *modes[])
836 {
837 struct drm_property *tv_selector;
838 struct drm_property *tv_subconnector;
839 int i;
840
841 if (dev->mode_config.tv_select_subconnector_property)
842 return 0;
843
844 /*
845 * Basic connector properties
846 */
847 tv_selector = drm_property_create_enum(dev, 0,
848 "select subconnector",
849 drm_tv_select_enum_list,
850 ARRAY_SIZE(drm_tv_select_enum_list));
851 dev->mode_config.tv_select_subconnector_property = tv_selector;
852
853 tv_subconnector =
854 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
855 "subconnector",
856 drm_tv_subconnector_enum_list,
857 ARRAY_SIZE(drm_tv_subconnector_enum_list));
858 dev->mode_config.tv_subconnector_property = tv_subconnector;
859
860 /*
861 * Other, TV specific properties: margins & TV modes.
862 */
863 dev->mode_config.tv_left_margin_property =
864 drm_property_create_range(dev, 0, "left margin", 0, 100);
865
866 dev->mode_config.tv_right_margin_property =
867 drm_property_create_range(dev, 0, "right margin", 0, 100);
868
869 dev->mode_config.tv_top_margin_property =
870 drm_property_create_range(dev, 0, "top margin", 0, 100);
871
872 dev->mode_config.tv_bottom_margin_property =
873 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
874
875 dev->mode_config.tv_mode_property =
876 drm_property_create(dev, DRM_MODE_PROP_ENUM,
877 "mode", num_modes);
878 for (i = 0; i < num_modes; i++)
879 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
880 i, modes[i]);
881
882 dev->mode_config.tv_brightness_property =
883 drm_property_create_range(dev, 0, "brightness", 0, 100);
884
885 dev->mode_config.tv_contrast_property =
886 drm_property_create_range(dev, 0, "contrast", 0, 100);
887
888 dev->mode_config.tv_flicker_reduction_property =
889 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
890
891 dev->mode_config.tv_overscan_property =
892 drm_property_create_range(dev, 0, "overscan", 0, 100);
893
894 dev->mode_config.tv_saturation_property =
895 drm_property_create_range(dev, 0, "saturation", 0, 100);
896
897 dev->mode_config.tv_hue_property =
898 drm_property_create_range(dev, 0, "hue", 0, 100);
899
900 return 0;
901 }
902 EXPORT_SYMBOL(drm_mode_create_tv_properties);
903
904 /**
905 * drm_mode_create_scaling_mode_property - create scaling mode property
906 * @dev: DRM device
907 *
908 * Called by a driver the first time it's needed, must be attached to desired
909 * connectors.
910 */
911 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
912 {
913 struct drm_property *scaling_mode;
914
915 if (dev->mode_config.scaling_mode_property)
916 return 0;
917
918 scaling_mode =
919 drm_property_create_enum(dev, 0, "scaling mode",
920 drm_scaling_mode_enum_list,
921 ARRAY_SIZE(drm_scaling_mode_enum_list));
922
923 dev->mode_config.scaling_mode_property = scaling_mode;
924
925 return 0;
926 }
927 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
928
929 /**
930 * drm_mode_create_dithering_property - create dithering property
931 * @dev: DRM device
932 *
933 * Called by a driver the first time it's needed, must be attached to desired
934 * connectors.
935 */
936 int drm_mode_create_dithering_property(struct drm_device *dev)
937 {
938 struct drm_property *dithering_mode;
939
940 if (dev->mode_config.dithering_mode_property)
941 return 0;
942
943 dithering_mode =
944 drm_property_create_enum(dev, 0, "dithering",
945 drm_dithering_mode_enum_list,
946 ARRAY_SIZE(drm_dithering_mode_enum_list));
947 dev->mode_config.dithering_mode_property = dithering_mode;
948
949 return 0;
950 }
951 EXPORT_SYMBOL(drm_mode_create_dithering_property);
952
953 /**
954 * drm_mode_create_dirty_property - create dirty property
955 * @dev: DRM device
956 *
957 * Called by a driver the first time it's needed, must be attached to desired
958 * connectors.
959 */
960 int drm_mode_create_dirty_info_property(struct drm_device *dev)
961 {
962 struct drm_property *dirty_info;
963
964 if (dev->mode_config.dirty_info_property)
965 return 0;
966
967 dirty_info =
968 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
969 "dirty",
970 drm_dirty_info_enum_list,
971 ARRAY_SIZE(drm_dirty_info_enum_list));
972 dev->mode_config.dirty_info_property = dirty_info;
973
974 return 0;
975 }
976 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
977
978 /**
979 * drm_mode_config_init - initialize DRM mode_configuration structure
980 * @dev: DRM device
981 *
982 * LOCKING:
983 * None, should happen single threaded at init time.
984 *
985 * Initialize @dev's mode_config structure, used for tracking the graphics
986 * configuration of @dev.
987 */
988 void drm_mode_config_init(struct drm_device *dev)
989 {
990 mutex_init(&dev->mode_config.mutex);
991 mutex_init(&dev->mode_config.idr_mutex);
992 INIT_LIST_HEAD(&dev->mode_config.fb_list);
993 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
994 INIT_LIST_HEAD(&dev->mode_config.connector_list);
995 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
996 INIT_LIST_HEAD(&dev->mode_config.property_list);
997 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
998 INIT_LIST_HEAD(&dev->mode_config.plane_list);
999 idr_init(&dev->mode_config.crtc_idr);
1000
1001 mutex_lock(&dev->mode_config.mutex);
1002 drm_mode_create_standard_connector_properties(dev);
1003 mutex_unlock(&dev->mode_config.mutex);
1004
1005 /* Just to be sure */
1006 dev->mode_config.num_fb = 0;
1007 dev->mode_config.num_connector = 0;
1008 dev->mode_config.num_crtc = 0;
1009 dev->mode_config.num_encoder = 0;
1010 }
1011 EXPORT_SYMBOL(drm_mode_config_init);
1012
1013 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1014 {
1015 uint32_t total_objects = 0;
1016
1017 total_objects += dev->mode_config.num_crtc;
1018 total_objects += dev->mode_config.num_connector;
1019 total_objects += dev->mode_config.num_encoder;
1020
1021 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1022 if (!group->id_list)
1023 return -ENOMEM;
1024
1025 group->num_crtcs = 0;
1026 group->num_connectors = 0;
1027 group->num_encoders = 0;
1028 return 0;
1029 }
1030
1031 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1032 struct drm_mode_group *group)
1033 {
1034 struct drm_crtc *crtc;
1035 struct drm_encoder *encoder;
1036 struct drm_connector *connector;
1037 int ret;
1038
1039 if ((ret = drm_mode_group_init(dev, group)))
1040 return ret;
1041
1042 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1043 group->id_list[group->num_crtcs++] = crtc->base.id;
1044
1045 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1046 group->id_list[group->num_crtcs + group->num_encoders++] =
1047 encoder->base.id;
1048
1049 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1050 group->id_list[group->num_crtcs + group->num_encoders +
1051 group->num_connectors++] = connector->base.id;
1052
1053 return 0;
1054 }
1055 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1056
1057 /**
1058 * drm_mode_config_cleanup - free up DRM mode_config info
1059 * @dev: DRM device
1060 *
1061 * LOCKING:
1062 * Caller must hold mode config lock.
1063 *
1064 * Free up all the connectors and CRTCs associated with this DRM device, then
1065 * free up the framebuffers and associated buffer objects.
1066 *
1067 * FIXME: cleanup any dangling user buffer objects too
1068 */
1069 void drm_mode_config_cleanup(struct drm_device *dev)
1070 {
1071 struct drm_connector *connector, *ot;
1072 struct drm_crtc *crtc, *ct;
1073 struct drm_encoder *encoder, *enct;
1074 struct drm_framebuffer *fb, *fbt;
1075 struct drm_property *property, *pt;
1076 struct drm_plane *plane, *plt;
1077
1078 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
1079 head) {
1080 encoder->funcs->destroy(encoder);
1081 }
1082
1083 list_for_each_entry_safe(connector, ot,
1084 &dev->mode_config.connector_list, head) {
1085 connector->funcs->destroy(connector);
1086 }
1087
1088 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
1089 head) {
1090 drm_property_destroy(dev, property);
1091 }
1092
1093 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
1094 drm_framebuffer_remove(fb);
1095 }
1096
1097 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
1098 head) {
1099 plane->funcs->destroy(plane);
1100 }
1101
1102 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
1103 crtc->funcs->destroy(crtc);
1104 }
1105
1106 idr_remove_all(&dev->mode_config.crtc_idr);
1107 idr_destroy(&dev->mode_config.crtc_idr);
1108 }
1109 EXPORT_SYMBOL(drm_mode_config_cleanup);
1110
1111 /**
1112 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1113 * @out: drm_mode_modeinfo struct to return to the user
1114 * @in: drm_display_mode to use
1115 *
1116 * LOCKING:
1117 * None.
1118 *
1119 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1120 * the user.
1121 */
1122 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1123 const struct drm_display_mode *in)
1124 {
1125 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1126 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1127 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1128 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1129 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1130 "timing values too large for mode info\n");
1131
1132 out->clock = in->clock;
1133 out->hdisplay = in->hdisplay;
1134 out->hsync_start = in->hsync_start;
1135 out->hsync_end = in->hsync_end;
1136 out->htotal = in->htotal;
1137 out->hskew = in->hskew;
1138 out->vdisplay = in->vdisplay;
1139 out->vsync_start = in->vsync_start;
1140 out->vsync_end = in->vsync_end;
1141 out->vtotal = in->vtotal;
1142 out->vscan = in->vscan;
1143 out->vrefresh = in->vrefresh;
1144 out->flags = in->flags;
1145 out->type = in->type;
1146 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1147 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1148 }
1149
1150 /**
1151 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1152 * @out: drm_display_mode to return to the user
1153 * @in: drm_mode_modeinfo to use
1154 *
1155 * LOCKING:
1156 * None.
1157 *
1158 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1159 * the caller.
1160 *
1161 * RETURNS:
1162 * Zero on success, errno on failure.
1163 */
1164 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1165 const struct drm_mode_modeinfo *in)
1166 {
1167 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1168 return -ERANGE;
1169
1170 out->clock = in->clock;
1171 out->hdisplay = in->hdisplay;
1172 out->hsync_start = in->hsync_start;
1173 out->hsync_end = in->hsync_end;
1174 out->htotal = in->htotal;
1175 out->hskew = in->hskew;
1176 out->vdisplay = in->vdisplay;
1177 out->vsync_start = in->vsync_start;
1178 out->vsync_end = in->vsync_end;
1179 out->vtotal = in->vtotal;
1180 out->vscan = in->vscan;
1181 out->vrefresh = in->vrefresh;
1182 out->flags = in->flags;
1183 out->type = in->type;
1184 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1185 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1186
1187 return 0;
1188 }
1189
1190 /**
1191 * drm_mode_getresources - get graphics configuration
1192 * @inode: inode from the ioctl
1193 * @filp: file * from the ioctl
1194 * @cmd: cmd from ioctl
1195 * @arg: arg from ioctl
1196 *
1197 * LOCKING:
1198 * Takes mode config lock.
1199 *
1200 * Construct a set of configuration description structures and return
1201 * them to the user, including CRTC, connector and framebuffer configuration.
1202 *
1203 * Called by the user via ioctl.
1204 *
1205 * RETURNS:
1206 * Zero on success, errno on failure.
1207 */
1208 int drm_mode_getresources(struct drm_device *dev, void *data,
1209 struct drm_file *file_priv)
1210 {
1211 struct drm_mode_card_res *card_res = data;
1212 struct list_head *lh;
1213 struct drm_framebuffer *fb;
1214 struct drm_connector *connector;
1215 struct drm_crtc *crtc;
1216 struct drm_encoder *encoder;
1217 int ret = 0;
1218 int connector_count = 0;
1219 int crtc_count = 0;
1220 int fb_count = 0;
1221 int encoder_count = 0;
1222 int copied = 0, i;
1223 uint32_t __user *fb_id;
1224 uint32_t __user *crtc_id;
1225 uint32_t __user *connector_id;
1226 uint32_t __user *encoder_id;
1227 struct drm_mode_group *mode_group;
1228
1229 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1230 return -EINVAL;
1231
1232 mutex_lock(&dev->mode_config.mutex);
1233
1234 /*
1235 * For the non-control nodes we need to limit the list of resources
1236 * by IDs in the group list for this node
1237 */
1238 list_for_each(lh, &file_priv->fbs)
1239 fb_count++;
1240
1241 mode_group = &file_priv->master->minor->mode_group;
1242 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1243
1244 list_for_each(lh, &dev->mode_config.crtc_list)
1245 crtc_count++;
1246
1247 list_for_each(lh, &dev->mode_config.connector_list)
1248 connector_count++;
1249
1250 list_for_each(lh, &dev->mode_config.encoder_list)
1251 encoder_count++;
1252 } else {
1253
1254 crtc_count = mode_group->num_crtcs;
1255 connector_count = mode_group->num_connectors;
1256 encoder_count = mode_group->num_encoders;
1257 }
1258
1259 card_res->max_height = dev->mode_config.max_height;
1260 card_res->min_height = dev->mode_config.min_height;
1261 card_res->max_width = dev->mode_config.max_width;
1262 card_res->min_width = dev->mode_config.min_width;
1263
1264 /* handle this in 4 parts */
1265 /* FBs */
1266 if (card_res->count_fbs >= fb_count) {
1267 copied = 0;
1268 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1269 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1270 if (put_user(fb->base.id, fb_id + copied)) {
1271 ret = -EFAULT;
1272 goto out;
1273 }
1274 copied++;
1275 }
1276 }
1277 card_res->count_fbs = fb_count;
1278
1279 /* CRTCs */
1280 if (card_res->count_crtcs >= crtc_count) {
1281 copied = 0;
1282 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1283 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1284 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1285 head) {
1286 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1287 if (put_user(crtc->base.id, crtc_id + copied)) {
1288 ret = -EFAULT;
1289 goto out;
1290 }
1291 copied++;
1292 }
1293 } else {
1294 for (i = 0; i < mode_group->num_crtcs; i++) {
1295 if (put_user(mode_group->id_list[i],
1296 crtc_id + copied)) {
1297 ret = -EFAULT;
1298 goto out;
1299 }
1300 copied++;
1301 }
1302 }
1303 }
1304 card_res->count_crtcs = crtc_count;
1305
1306 /* Encoders */
1307 if (card_res->count_encoders >= encoder_count) {
1308 copied = 0;
1309 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1310 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1311 list_for_each_entry(encoder,
1312 &dev->mode_config.encoder_list,
1313 head) {
1314 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1315 drm_get_encoder_name(encoder));
1316 if (put_user(encoder->base.id, encoder_id +
1317 copied)) {
1318 ret = -EFAULT;
1319 goto out;
1320 }
1321 copied++;
1322 }
1323 } else {
1324 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1325 if (put_user(mode_group->id_list[i],
1326 encoder_id + copied)) {
1327 ret = -EFAULT;
1328 goto out;
1329 }
1330 copied++;
1331 }
1332
1333 }
1334 }
1335 card_res->count_encoders = encoder_count;
1336
1337 /* Connectors */
1338 if (card_res->count_connectors >= connector_count) {
1339 copied = 0;
1340 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1341 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1342 list_for_each_entry(connector,
1343 &dev->mode_config.connector_list,
1344 head) {
1345 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1346 connector->base.id,
1347 drm_get_connector_name(connector));
1348 if (put_user(connector->base.id,
1349 connector_id + copied)) {
1350 ret = -EFAULT;
1351 goto out;
1352 }
1353 copied++;
1354 }
1355 } else {
1356 int start = mode_group->num_crtcs +
1357 mode_group->num_encoders;
1358 for (i = start; i < start + mode_group->num_connectors; i++) {
1359 if (put_user(mode_group->id_list[i],
1360 connector_id + copied)) {
1361 ret = -EFAULT;
1362 goto out;
1363 }
1364 copied++;
1365 }
1366 }
1367 }
1368 card_res->count_connectors = connector_count;
1369
1370 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1371 card_res->count_connectors, card_res->count_encoders);
1372
1373 out:
1374 mutex_unlock(&dev->mode_config.mutex);
1375 return ret;
1376 }
1377
1378 /**
1379 * drm_mode_getcrtc - get CRTC configuration
1380 * @inode: inode from the ioctl
1381 * @filp: file * from the ioctl
1382 * @cmd: cmd from ioctl
1383 * @arg: arg from ioctl
1384 *
1385 * LOCKING:
1386 * Takes mode config lock.
1387 *
1388 * Construct a CRTC configuration structure to return to the user.
1389 *
1390 * Called by the user via ioctl.
1391 *
1392 * RETURNS:
1393 * Zero on success, errno on failure.
1394 */
1395 int drm_mode_getcrtc(struct drm_device *dev,
1396 void *data, struct drm_file *file_priv)
1397 {
1398 struct drm_mode_crtc *crtc_resp = data;
1399 struct drm_crtc *crtc;
1400 struct drm_mode_object *obj;
1401 int ret = 0;
1402
1403 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1404 return -EINVAL;
1405
1406 mutex_lock(&dev->mode_config.mutex);
1407
1408 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1409 DRM_MODE_OBJECT_CRTC);
1410 if (!obj) {
1411 ret = -EINVAL;
1412 goto out;
1413 }
1414 crtc = obj_to_crtc(obj);
1415
1416 crtc_resp->x = crtc->x;
1417 crtc_resp->y = crtc->y;
1418 crtc_resp->gamma_size = crtc->gamma_size;
1419 if (crtc->fb)
1420 crtc_resp->fb_id = crtc->fb->base.id;
1421 else
1422 crtc_resp->fb_id = 0;
1423
1424 if (crtc->enabled) {
1425
1426 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1427 crtc_resp->mode_valid = 1;
1428
1429 } else {
1430 crtc_resp->mode_valid = 0;
1431 }
1432
1433 out:
1434 mutex_unlock(&dev->mode_config.mutex);
1435 return ret;
1436 }
1437
1438 /**
1439 * drm_mode_getconnector - get connector configuration
1440 * @inode: inode from the ioctl
1441 * @filp: file * from the ioctl
1442 * @cmd: cmd from ioctl
1443 * @arg: arg from ioctl
1444 *
1445 * LOCKING:
1446 * Takes mode config lock.
1447 *
1448 * Construct a connector configuration structure to return to the user.
1449 *
1450 * Called by the user via ioctl.
1451 *
1452 * RETURNS:
1453 * Zero on success, errno on failure.
1454 */
1455 int drm_mode_getconnector(struct drm_device *dev, void *data,
1456 struct drm_file *file_priv)
1457 {
1458 struct drm_mode_get_connector *out_resp = data;
1459 struct drm_mode_object *obj;
1460 struct drm_connector *connector;
1461 struct drm_display_mode *mode;
1462 int mode_count = 0;
1463 int props_count = 0;
1464 int encoders_count = 0;
1465 int ret = 0;
1466 int copied = 0;
1467 int i;
1468 struct drm_mode_modeinfo u_mode;
1469 struct drm_mode_modeinfo __user *mode_ptr;
1470 uint32_t __user *prop_ptr;
1471 uint64_t __user *prop_values;
1472 uint32_t __user *encoder_ptr;
1473
1474 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1475 return -EINVAL;
1476
1477 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1478
1479 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1480
1481 mutex_lock(&dev->mode_config.mutex);
1482
1483 obj = drm_mode_object_find(dev, out_resp->connector_id,
1484 DRM_MODE_OBJECT_CONNECTOR);
1485 if (!obj) {
1486 ret = -EINVAL;
1487 goto out;
1488 }
1489 connector = obj_to_connector(obj);
1490
1491 props_count = connector->properties.count;
1492
1493 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1494 if (connector->encoder_ids[i] != 0) {
1495 encoders_count++;
1496 }
1497 }
1498
1499 if (out_resp->count_modes == 0) {
1500 connector->funcs->fill_modes(connector,
1501 dev->mode_config.max_width,
1502 dev->mode_config.max_height);
1503 }
1504
1505 /* delayed so we get modes regardless of pre-fill_modes state */
1506 list_for_each_entry(mode, &connector->modes, head)
1507 mode_count++;
1508
1509 out_resp->connector_id = connector->base.id;
1510 out_resp->connector_type = connector->connector_type;
1511 out_resp->connector_type_id = connector->connector_type_id;
1512 out_resp->mm_width = connector->display_info.width_mm;
1513 out_resp->mm_height = connector->display_info.height_mm;
1514 out_resp->subpixel = connector->display_info.subpixel_order;
1515 out_resp->connection = connector->status;
1516 if (connector->encoder)
1517 out_resp->encoder_id = connector->encoder->base.id;
1518 else
1519 out_resp->encoder_id = 0;
1520
1521 /*
1522 * This ioctl is called twice, once to determine how much space is
1523 * needed, and the 2nd time to fill it.
1524 */
1525 if ((out_resp->count_modes >= mode_count) && mode_count) {
1526 copied = 0;
1527 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1528 list_for_each_entry(mode, &connector->modes, head) {
1529 drm_crtc_convert_to_umode(&u_mode, mode);
1530 if (copy_to_user(mode_ptr + copied,
1531 &u_mode, sizeof(u_mode))) {
1532 ret = -EFAULT;
1533 goto out;
1534 }
1535 copied++;
1536 }
1537 }
1538 out_resp->count_modes = mode_count;
1539
1540 if ((out_resp->count_props >= props_count) && props_count) {
1541 copied = 0;
1542 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1543 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1544 for (i = 0; i < connector->properties.count; i++) {
1545 if (put_user(connector->properties.ids[i],
1546 prop_ptr + copied)) {
1547 ret = -EFAULT;
1548 goto out;
1549 }
1550
1551 if (put_user(connector->properties.values[i],
1552 prop_values + copied)) {
1553 ret = -EFAULT;
1554 goto out;
1555 }
1556 copied++;
1557 }
1558 }
1559 out_resp->count_props = props_count;
1560
1561 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1562 copied = 0;
1563 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1564 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1565 if (connector->encoder_ids[i] != 0) {
1566 if (put_user(connector->encoder_ids[i],
1567 encoder_ptr + copied)) {
1568 ret = -EFAULT;
1569 goto out;
1570 }
1571 copied++;
1572 }
1573 }
1574 }
1575 out_resp->count_encoders = encoders_count;
1576
1577 out:
1578 mutex_unlock(&dev->mode_config.mutex);
1579 return ret;
1580 }
1581
1582 int drm_mode_getencoder(struct drm_device *dev, void *data,
1583 struct drm_file *file_priv)
1584 {
1585 struct drm_mode_get_encoder *enc_resp = data;
1586 struct drm_mode_object *obj;
1587 struct drm_encoder *encoder;
1588 int ret = 0;
1589
1590 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1591 return -EINVAL;
1592
1593 mutex_lock(&dev->mode_config.mutex);
1594 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1595 DRM_MODE_OBJECT_ENCODER);
1596 if (!obj) {
1597 ret = -EINVAL;
1598 goto out;
1599 }
1600 encoder = obj_to_encoder(obj);
1601
1602 if (encoder->crtc)
1603 enc_resp->crtc_id = encoder->crtc->base.id;
1604 else
1605 enc_resp->crtc_id = 0;
1606 enc_resp->encoder_type = encoder->encoder_type;
1607 enc_resp->encoder_id = encoder->base.id;
1608 enc_resp->possible_crtcs = encoder->possible_crtcs;
1609 enc_resp->possible_clones = encoder->possible_clones;
1610
1611 out:
1612 mutex_unlock(&dev->mode_config.mutex);
1613 return ret;
1614 }
1615
1616 /**
1617 * drm_mode_getplane_res - get plane info
1618 * @dev: DRM device
1619 * @data: ioctl data
1620 * @file_priv: DRM file info
1621 *
1622 * LOCKING:
1623 * Takes mode config lock.
1624 *
1625 * Return an plane count and set of IDs.
1626 */
1627 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1628 struct drm_file *file_priv)
1629 {
1630 struct drm_mode_get_plane_res *plane_resp = data;
1631 struct drm_mode_config *config;
1632 struct drm_plane *plane;
1633 uint32_t __user *plane_ptr;
1634 int copied = 0, ret = 0;
1635
1636 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1637 return -EINVAL;
1638
1639 mutex_lock(&dev->mode_config.mutex);
1640 config = &dev->mode_config;
1641
1642 /*
1643 * This ioctl is called twice, once to determine how much space is
1644 * needed, and the 2nd time to fill it.
1645 */
1646 if (config->num_plane &&
1647 (plane_resp->count_planes >= config->num_plane)) {
1648 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1649
1650 list_for_each_entry(plane, &config->plane_list, head) {
1651 if (put_user(plane->base.id, plane_ptr + copied)) {
1652 ret = -EFAULT;
1653 goto out;
1654 }
1655 copied++;
1656 }
1657 }
1658 plane_resp->count_planes = config->num_plane;
1659
1660 out:
1661 mutex_unlock(&dev->mode_config.mutex);
1662 return ret;
1663 }
1664
1665 /**
1666 * drm_mode_getplane - get plane info
1667 * @dev: DRM device
1668 * @data: ioctl data
1669 * @file_priv: DRM file info
1670 *
1671 * LOCKING:
1672 * Takes mode config lock.
1673 *
1674 * Return plane info, including formats supported, gamma size, any
1675 * current fb, etc.
1676 */
1677 int drm_mode_getplane(struct drm_device *dev, void *data,
1678 struct drm_file *file_priv)
1679 {
1680 struct drm_mode_get_plane *plane_resp = data;
1681 struct drm_mode_object *obj;
1682 struct drm_plane *plane;
1683 uint32_t __user *format_ptr;
1684 int ret = 0;
1685
1686 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1687 return -EINVAL;
1688
1689 mutex_lock(&dev->mode_config.mutex);
1690 obj = drm_mode_object_find(dev, plane_resp->plane_id,
1691 DRM_MODE_OBJECT_PLANE);
1692 if (!obj) {
1693 ret = -ENOENT;
1694 goto out;
1695 }
1696 plane = obj_to_plane(obj);
1697
1698 if (plane->crtc)
1699 plane_resp->crtc_id = plane->crtc->base.id;
1700 else
1701 plane_resp->crtc_id = 0;
1702
1703 if (plane->fb)
1704 plane_resp->fb_id = plane->fb->base.id;
1705 else
1706 plane_resp->fb_id = 0;
1707
1708 plane_resp->plane_id = plane->base.id;
1709 plane_resp->possible_crtcs = plane->possible_crtcs;
1710 plane_resp->gamma_size = plane->gamma_size;
1711
1712 /*
1713 * This ioctl is called twice, once to determine how much space is
1714 * needed, and the 2nd time to fill it.
1715 */
1716 if (plane->format_count &&
1717 (plane_resp->count_format_types >= plane->format_count)) {
1718 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
1719 if (copy_to_user(format_ptr,
1720 plane->format_types,
1721 sizeof(uint32_t) * plane->format_count)) {
1722 ret = -EFAULT;
1723 goto out;
1724 }
1725 }
1726 plane_resp->count_format_types = plane->format_count;
1727
1728 out:
1729 mutex_unlock(&dev->mode_config.mutex);
1730 return ret;
1731 }
1732
1733 /**
1734 * drm_mode_setplane - set up or tear down an plane
1735 * @dev: DRM device
1736 * @data: ioctl data*
1737 * @file_prive: DRM file info
1738 *
1739 * LOCKING:
1740 * Takes mode config lock.
1741 *
1742 * Set plane info, including placement, fb, scaling, and other factors.
1743 * Or pass a NULL fb to disable.
1744 */
1745 int drm_mode_setplane(struct drm_device *dev, void *data,
1746 struct drm_file *file_priv)
1747 {
1748 struct drm_mode_set_plane *plane_req = data;
1749 struct drm_mode_object *obj;
1750 struct drm_plane *plane;
1751 struct drm_crtc *crtc;
1752 struct drm_framebuffer *fb;
1753 int ret = 0;
1754 unsigned int fb_width, fb_height;
1755 int i;
1756
1757 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1758 return -EINVAL;
1759
1760 mutex_lock(&dev->mode_config.mutex);
1761
1762 /*
1763 * First, find the plane, crtc, and fb objects. If not available,
1764 * we don't bother to call the driver.
1765 */
1766 obj = drm_mode_object_find(dev, plane_req->plane_id,
1767 DRM_MODE_OBJECT_PLANE);
1768 if (!obj) {
1769 DRM_DEBUG_KMS("Unknown plane ID %d\n",
1770 plane_req->plane_id);
1771 ret = -ENOENT;
1772 goto out;
1773 }
1774 plane = obj_to_plane(obj);
1775
1776 /* No fb means shut it down */
1777 if (!plane_req->fb_id) {
1778 plane->funcs->disable_plane(plane);
1779 plane->crtc = NULL;
1780 plane->fb = NULL;
1781 goto out;
1782 }
1783
1784 obj = drm_mode_object_find(dev, plane_req->crtc_id,
1785 DRM_MODE_OBJECT_CRTC);
1786 if (!obj) {
1787 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
1788 plane_req->crtc_id);
1789 ret = -ENOENT;
1790 goto out;
1791 }
1792 crtc = obj_to_crtc(obj);
1793
1794 obj = drm_mode_object_find(dev, plane_req->fb_id,
1795 DRM_MODE_OBJECT_FB);
1796 if (!obj) {
1797 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
1798 plane_req->fb_id);
1799 ret = -ENOENT;
1800 goto out;
1801 }
1802 fb = obj_to_fb(obj);
1803
1804 /* Check whether this plane supports the fb pixel format. */
1805 for (i = 0; i < plane->format_count; i++)
1806 if (fb->pixel_format == plane->format_types[i])
1807 break;
1808 if (i == plane->format_count) {
1809 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
1810 ret = -EINVAL;
1811 goto out;
1812 }
1813
1814 fb_width = fb->width << 16;
1815 fb_height = fb->height << 16;
1816
1817 /* Make sure source coordinates are inside the fb. */
1818 if (plane_req->src_w > fb_width ||
1819 plane_req->src_x > fb_width - plane_req->src_w ||
1820 plane_req->src_h > fb_height ||
1821 plane_req->src_y > fb_height - plane_req->src_h) {
1822 DRM_DEBUG_KMS("Invalid source coordinates "
1823 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
1824 plane_req->src_w >> 16,
1825 ((plane_req->src_w & 0xffff) * 15625) >> 10,
1826 plane_req->src_h >> 16,
1827 ((plane_req->src_h & 0xffff) * 15625) >> 10,
1828 plane_req->src_x >> 16,
1829 ((plane_req->src_x & 0xffff) * 15625) >> 10,
1830 plane_req->src_y >> 16,
1831 ((plane_req->src_y & 0xffff) * 15625) >> 10);
1832 ret = -ENOSPC;
1833 goto out;
1834 }
1835
1836 /* Give drivers some help against integer overflows */
1837 if (plane_req->crtc_w > INT_MAX ||
1838 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
1839 plane_req->crtc_h > INT_MAX ||
1840 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
1841 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
1842 plane_req->crtc_w, plane_req->crtc_h,
1843 plane_req->crtc_x, plane_req->crtc_y);
1844 ret = -ERANGE;
1845 goto out;
1846 }
1847
1848 ret = plane->funcs->update_plane(plane, crtc, fb,
1849 plane_req->crtc_x, plane_req->crtc_y,
1850 plane_req->crtc_w, plane_req->crtc_h,
1851 plane_req->src_x, plane_req->src_y,
1852 plane_req->src_w, plane_req->src_h);
1853 if (!ret) {
1854 plane->crtc = crtc;
1855 plane->fb = fb;
1856 }
1857
1858 out:
1859 mutex_unlock(&dev->mode_config.mutex);
1860
1861 return ret;
1862 }
1863
1864 /**
1865 * drm_mode_setcrtc - set CRTC configuration
1866 * @inode: inode from the ioctl
1867 * @filp: file * from the ioctl
1868 * @cmd: cmd from ioctl
1869 * @arg: arg from ioctl
1870 *
1871 * LOCKING:
1872 * Takes mode config lock.
1873 *
1874 * Build a new CRTC configuration based on user request.
1875 *
1876 * Called by the user via ioctl.
1877 *
1878 * RETURNS:
1879 * Zero on success, errno on failure.
1880 */
1881 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1882 struct drm_file *file_priv)
1883 {
1884 struct drm_mode_config *config = &dev->mode_config;
1885 struct drm_mode_crtc *crtc_req = data;
1886 struct drm_mode_object *obj;
1887 struct drm_crtc *crtc;
1888 struct drm_connector **connector_set = NULL, *connector;
1889 struct drm_framebuffer *fb = NULL;
1890 struct drm_display_mode *mode = NULL;
1891 struct drm_mode_set set;
1892 uint32_t __user *set_connectors_ptr;
1893 int ret;
1894 int i;
1895
1896 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1897 return -EINVAL;
1898
1899 /* For some reason crtc x/y offsets are signed internally. */
1900 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
1901 return -ERANGE;
1902
1903 mutex_lock(&dev->mode_config.mutex);
1904 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1905 DRM_MODE_OBJECT_CRTC);
1906 if (!obj) {
1907 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1908 ret = -EINVAL;
1909 goto out;
1910 }
1911 crtc = obj_to_crtc(obj);
1912 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1913
1914 if (crtc_req->mode_valid) {
1915 int hdisplay, vdisplay;
1916 /* If we have a mode we need a framebuffer. */
1917 /* If we pass -1, set the mode with the currently bound fb */
1918 if (crtc_req->fb_id == -1) {
1919 if (!crtc->fb) {
1920 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
1921 ret = -EINVAL;
1922 goto out;
1923 }
1924 fb = crtc->fb;
1925 } else {
1926 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1927 DRM_MODE_OBJECT_FB);
1928 if (!obj) {
1929 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1930 crtc_req->fb_id);
1931 ret = -EINVAL;
1932 goto out;
1933 }
1934 fb = obj_to_fb(obj);
1935 }
1936
1937 mode = drm_mode_create(dev);
1938 if (!mode) {
1939 ret = -ENOMEM;
1940 goto out;
1941 }
1942
1943 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
1944 if (ret) {
1945 DRM_DEBUG_KMS("Invalid mode\n");
1946 goto out;
1947 }
1948
1949 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1950
1951 hdisplay = mode->hdisplay;
1952 vdisplay = mode->vdisplay;
1953
1954 if (crtc->invert_dimensions)
1955 swap(hdisplay, vdisplay);
1956
1957 if (hdisplay > fb->width ||
1958 vdisplay > fb->height ||
1959 crtc_req->x > fb->width - hdisplay ||
1960 crtc_req->y > fb->height - vdisplay) {
1961 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
1962 fb->width, fb->height,
1963 hdisplay, vdisplay, crtc_req->x, crtc_req->y,
1964 crtc->invert_dimensions ? " (inverted)" : "");
1965 ret = -ENOSPC;
1966 goto out;
1967 }
1968 }
1969
1970 if (crtc_req->count_connectors == 0 && mode) {
1971 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1972 ret = -EINVAL;
1973 goto out;
1974 }
1975
1976 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1977 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1978 crtc_req->count_connectors);
1979 ret = -EINVAL;
1980 goto out;
1981 }
1982
1983 if (crtc_req->count_connectors > 0) {
1984 u32 out_id;
1985
1986 /* Avoid unbounded kernel memory allocation */
1987 if (crtc_req->count_connectors > config->num_connector) {
1988 ret = -EINVAL;
1989 goto out;
1990 }
1991
1992 connector_set = kmalloc(crtc_req->count_connectors *
1993 sizeof(struct drm_connector *),
1994 GFP_KERNEL);
1995 if (!connector_set) {
1996 ret = -ENOMEM;
1997 goto out;
1998 }
1999
2000 for (i = 0; i < crtc_req->count_connectors; i++) {
2001 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2002 if (get_user(out_id, &set_connectors_ptr[i])) {
2003 ret = -EFAULT;
2004 goto out;
2005 }
2006
2007 obj = drm_mode_object_find(dev, out_id,
2008 DRM_MODE_OBJECT_CONNECTOR);
2009 if (!obj) {
2010 DRM_DEBUG_KMS("Connector id %d unknown\n",
2011 out_id);
2012 ret = -EINVAL;
2013 goto out;
2014 }
2015 connector = obj_to_connector(obj);
2016 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2017 connector->base.id,
2018 drm_get_connector_name(connector));
2019
2020 connector_set[i] = connector;
2021 }
2022 }
2023
2024 set.crtc = crtc;
2025 set.x = crtc_req->x;
2026 set.y = crtc_req->y;
2027 set.mode = mode;
2028 set.connectors = connector_set;
2029 set.num_connectors = crtc_req->count_connectors;
2030 set.fb = fb;
2031 ret = crtc->funcs->set_config(&set);
2032
2033 out:
2034 kfree(connector_set);
2035 drm_mode_destroy(dev, mode);
2036 mutex_unlock(&dev->mode_config.mutex);
2037 return ret;
2038 }
2039
2040 int drm_mode_cursor_ioctl(struct drm_device *dev,
2041 void *data, struct drm_file *file_priv)
2042 {
2043 struct drm_mode_cursor *req = data;
2044 struct drm_mode_object *obj;
2045 struct drm_crtc *crtc;
2046 int ret = 0;
2047
2048 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2049 return -EINVAL;
2050
2051 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2052 return -EINVAL;
2053
2054 mutex_lock(&dev->mode_config.mutex);
2055 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
2056 if (!obj) {
2057 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2058 ret = -EINVAL;
2059 goto out;
2060 }
2061 crtc = obj_to_crtc(obj);
2062
2063 if (req->flags & DRM_MODE_CURSOR_BO) {
2064 if (!crtc->funcs->cursor_set) {
2065 ret = -ENXIO;
2066 goto out;
2067 }
2068 /* Turns off the cursor if handle is 0 */
2069 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2070 req->width, req->height);
2071 }
2072
2073 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2074 if (crtc->funcs->cursor_move) {
2075 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2076 } else {
2077 ret = -EFAULT;
2078 goto out;
2079 }
2080 }
2081 out:
2082 mutex_unlock(&dev->mode_config.mutex);
2083 return ret;
2084 }
2085
2086 /* Original addfb only supported RGB formats, so figure out which one */
2087 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2088 {
2089 uint32_t fmt;
2090
2091 switch (bpp) {
2092 case 8:
2093 fmt = DRM_FORMAT_RGB332;
2094 break;
2095 case 16:
2096 if (depth == 15)
2097 fmt = DRM_FORMAT_XRGB1555;
2098 else
2099 fmt = DRM_FORMAT_RGB565;
2100 break;
2101 case 24:
2102 fmt = DRM_FORMAT_RGB888;
2103 break;
2104 case 32:
2105 if (depth == 24)
2106 fmt = DRM_FORMAT_XRGB8888;
2107 else if (depth == 30)
2108 fmt = DRM_FORMAT_XRGB2101010;
2109 else
2110 fmt = DRM_FORMAT_ARGB8888;
2111 break;
2112 default:
2113 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2114 fmt = DRM_FORMAT_XRGB8888;
2115 break;
2116 }
2117
2118 return fmt;
2119 }
2120 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2121
2122 /**
2123 * drm_mode_addfb - add an FB to the graphics configuration
2124 * @inode: inode from the ioctl
2125 * @filp: file * from the ioctl
2126 * @cmd: cmd from ioctl
2127 * @arg: arg from ioctl
2128 *
2129 * LOCKING:
2130 * Takes mode config lock.
2131 *
2132 * Add a new FB to the specified CRTC, given a user request.
2133 *
2134 * Called by the user via ioctl.
2135 *
2136 * RETURNS:
2137 * Zero on success, errno on failure.
2138 */
2139 int drm_mode_addfb(struct drm_device *dev,
2140 void *data, struct drm_file *file_priv)
2141 {
2142 struct drm_mode_fb_cmd *or = data;
2143 struct drm_mode_fb_cmd2 r = {};
2144 struct drm_mode_config *config = &dev->mode_config;
2145 struct drm_framebuffer *fb;
2146 int ret = 0;
2147
2148 /* Use new struct with format internally */
2149 r.fb_id = or->fb_id;
2150 r.width = or->width;
2151 r.height = or->height;
2152 r.pitches[0] = or->pitch;
2153 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2154 r.handles[0] = or->handle;
2155
2156 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2157 return -EINVAL;
2158
2159 if ((config->min_width > r.width) || (r.width > config->max_width))
2160 return -EINVAL;
2161
2162 if ((config->min_height > r.height) || (r.height > config->max_height))
2163 return -EINVAL;
2164
2165 mutex_lock(&dev->mode_config.mutex);
2166
2167 /* TODO check buffer is sufficiently large */
2168 /* TODO setup destructor callback */
2169
2170 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2171 if (IS_ERR(fb)) {
2172 DRM_DEBUG_KMS("could not create framebuffer\n");
2173 ret = PTR_ERR(fb);
2174 goto out;
2175 }
2176
2177 or->fb_id = fb->base.id;
2178 list_add(&fb->filp_head, &file_priv->fbs);
2179 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2180
2181 out:
2182 mutex_unlock(&dev->mode_config.mutex);
2183 return ret;
2184 }
2185
2186 static int format_check(const struct drm_mode_fb_cmd2 *r)
2187 {
2188 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2189
2190 switch (format) {
2191 case DRM_FORMAT_C8:
2192 case DRM_FORMAT_RGB332:
2193 case DRM_FORMAT_BGR233:
2194 case DRM_FORMAT_XRGB4444:
2195 case DRM_FORMAT_XBGR4444:
2196 case DRM_FORMAT_RGBX4444:
2197 case DRM_FORMAT_BGRX4444:
2198 case DRM_FORMAT_ARGB4444:
2199 case DRM_FORMAT_ABGR4444:
2200 case DRM_FORMAT_RGBA4444:
2201 case DRM_FORMAT_BGRA4444:
2202 case DRM_FORMAT_XRGB1555:
2203 case DRM_FORMAT_XBGR1555:
2204 case DRM_FORMAT_RGBX5551:
2205 case DRM_FORMAT_BGRX5551:
2206 case DRM_FORMAT_ARGB1555:
2207 case DRM_FORMAT_ABGR1555:
2208 case DRM_FORMAT_RGBA5551:
2209 case DRM_FORMAT_BGRA5551:
2210 case DRM_FORMAT_RGB565:
2211 case DRM_FORMAT_BGR565:
2212 case DRM_FORMAT_RGB888:
2213 case DRM_FORMAT_BGR888:
2214 case DRM_FORMAT_XRGB8888:
2215 case DRM_FORMAT_XBGR8888:
2216 case DRM_FORMAT_RGBX8888:
2217 case DRM_FORMAT_BGRX8888:
2218 case DRM_FORMAT_ARGB8888:
2219 case DRM_FORMAT_ABGR8888:
2220 case DRM_FORMAT_RGBA8888:
2221 case DRM_FORMAT_BGRA8888:
2222 case DRM_FORMAT_XRGB2101010:
2223 case DRM_FORMAT_XBGR2101010:
2224 case DRM_FORMAT_RGBX1010102:
2225 case DRM_FORMAT_BGRX1010102:
2226 case DRM_FORMAT_ARGB2101010:
2227 case DRM_FORMAT_ABGR2101010:
2228 case DRM_FORMAT_RGBA1010102:
2229 case DRM_FORMAT_BGRA1010102:
2230 case DRM_FORMAT_YUYV:
2231 case DRM_FORMAT_YVYU:
2232 case DRM_FORMAT_UYVY:
2233 case DRM_FORMAT_VYUY:
2234 case DRM_FORMAT_AYUV:
2235 case DRM_FORMAT_NV12:
2236 case DRM_FORMAT_NV21:
2237 case DRM_FORMAT_NV16:
2238 case DRM_FORMAT_NV61:
2239 case DRM_FORMAT_NV24:
2240 case DRM_FORMAT_NV42:
2241 case DRM_FORMAT_YUV410:
2242 case DRM_FORMAT_YVU410:
2243 case DRM_FORMAT_YUV411:
2244 case DRM_FORMAT_YVU411:
2245 case DRM_FORMAT_YUV420:
2246 case DRM_FORMAT_YVU420:
2247 case DRM_FORMAT_YUV422:
2248 case DRM_FORMAT_YVU422:
2249 case DRM_FORMAT_YUV444:
2250 case DRM_FORMAT_YVU444:
2251 return 0;
2252 default:
2253 return -EINVAL;
2254 }
2255 }
2256
2257 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2258 {
2259 int ret, hsub, vsub, num_planes, i;
2260
2261 ret = format_check(r);
2262 if (ret) {
2263 DRM_DEBUG_KMS("bad framebuffer format 0x%08x\n", r->pixel_format);
2264 return ret;
2265 }
2266
2267 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2268 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2269 num_planes = drm_format_num_planes(r->pixel_format);
2270
2271 if (r->width == 0 || r->width % hsub) {
2272 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2273 return -EINVAL;
2274 }
2275
2276 if (r->height == 0 || r->height % vsub) {
2277 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2278 return -EINVAL;
2279 }
2280
2281 for (i = 0; i < num_planes; i++) {
2282 unsigned int width = r->width / (i != 0 ? hsub : 1);
2283
2284 if (!r->handles[i]) {
2285 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2286 return -EINVAL;
2287 }
2288
2289 if (r->pitches[i] < drm_format_plane_cpp(r->pixel_format, i) * width) {
2290 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2291 return -EINVAL;
2292 }
2293 }
2294
2295 return 0;
2296 }
2297
2298 /**
2299 * drm_mode_addfb2 - add an FB to the graphics configuration
2300 * @inode: inode from the ioctl
2301 * @filp: file * from the ioctl
2302 * @cmd: cmd from ioctl
2303 * @arg: arg from ioctl
2304 *
2305 * LOCKING:
2306 * Takes mode config lock.
2307 *
2308 * Add a new FB to the specified CRTC, given a user request with format.
2309 *
2310 * Called by the user via ioctl.
2311 *
2312 * RETURNS:
2313 * Zero on success, errno on failure.
2314 */
2315 int drm_mode_addfb2(struct drm_device *dev,
2316 void *data, struct drm_file *file_priv)
2317 {
2318 struct drm_mode_fb_cmd2 *r = data;
2319 struct drm_mode_config *config = &dev->mode_config;
2320 struct drm_framebuffer *fb;
2321 int ret;
2322
2323 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2324 return -EINVAL;
2325
2326 if ((config->min_width > r->width) || (r->width > config->max_width)) {
2327 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2328 r->width, config->min_width, config->max_width);
2329 return -EINVAL;
2330 }
2331 if ((config->min_height > r->height) || (r->height > config->max_height)) {
2332 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2333 r->height, config->min_height, config->max_height);
2334 return -EINVAL;
2335 }
2336
2337 ret = framebuffer_check(r);
2338 if (ret)
2339 return ret;
2340
2341 mutex_lock(&dev->mode_config.mutex);
2342
2343 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2344 if (IS_ERR(fb)) {
2345 DRM_DEBUG_KMS("could not create framebuffer\n");
2346 ret = PTR_ERR(fb);
2347 goto out;
2348 }
2349
2350 r->fb_id = fb->base.id;
2351 list_add(&fb->filp_head, &file_priv->fbs);
2352 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2353
2354 out:
2355 mutex_unlock(&dev->mode_config.mutex);
2356 return ret;
2357 }
2358
2359 /**
2360 * drm_mode_rmfb - remove an FB from the configuration
2361 * @inode: inode from the ioctl
2362 * @filp: file * from the ioctl
2363 * @cmd: cmd from ioctl
2364 * @arg: arg from ioctl
2365 *
2366 * LOCKING:
2367 * Takes mode config lock.
2368 *
2369 * Remove the FB specified by the user.
2370 *
2371 * Called by the user via ioctl.
2372 *
2373 * RETURNS:
2374 * Zero on success, errno on failure.
2375 */
2376 int drm_mode_rmfb(struct drm_device *dev,
2377 void *data, struct drm_file *file_priv)
2378 {
2379 struct drm_mode_object *obj;
2380 struct drm_framebuffer *fb = NULL;
2381 struct drm_framebuffer *fbl = NULL;
2382 uint32_t *id = data;
2383 int ret = 0;
2384 int found = 0;
2385
2386 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2387 return -EINVAL;
2388
2389 mutex_lock(&dev->mode_config.mutex);
2390 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
2391 /* TODO check that we really get a framebuffer back. */
2392 if (!obj) {
2393 ret = -EINVAL;
2394 goto out;
2395 }
2396 fb = obj_to_fb(obj);
2397
2398 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2399 if (fb == fbl)
2400 found = 1;
2401
2402 if (!found) {
2403 ret = -EINVAL;
2404 goto out;
2405 }
2406
2407 drm_framebuffer_remove(fb);
2408
2409 out:
2410 mutex_unlock(&dev->mode_config.mutex);
2411 return ret;
2412 }
2413
2414 /**
2415 * drm_mode_getfb - get FB info
2416 * @inode: inode from the ioctl
2417 * @filp: file * from the ioctl
2418 * @cmd: cmd from ioctl
2419 * @arg: arg from ioctl
2420 *
2421 * LOCKING:
2422 * Takes mode config lock.
2423 *
2424 * Lookup the FB given its ID and return info about it.
2425 *
2426 * Called by the user via ioctl.
2427 *
2428 * RETURNS:
2429 * Zero on success, errno on failure.
2430 */
2431 int drm_mode_getfb(struct drm_device *dev,
2432 void *data, struct drm_file *file_priv)
2433 {
2434 struct drm_mode_fb_cmd *r = data;
2435 struct drm_mode_object *obj;
2436 struct drm_framebuffer *fb;
2437 int ret = 0;
2438
2439 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2440 return -EINVAL;
2441
2442 mutex_lock(&dev->mode_config.mutex);
2443 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2444 if (!obj) {
2445 ret = -EINVAL;
2446 goto out;
2447 }
2448 fb = obj_to_fb(obj);
2449
2450 r->height = fb->height;
2451 r->width = fb->width;
2452 r->depth = fb->depth;
2453 r->bpp = fb->bits_per_pixel;
2454 r->pitch = fb->pitches[0];
2455 fb->funcs->create_handle(fb, file_priv, &r->handle);
2456
2457 out:
2458 mutex_unlock(&dev->mode_config.mutex);
2459 return ret;
2460 }
2461
2462 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2463 void *data, struct drm_file *file_priv)
2464 {
2465 struct drm_clip_rect __user *clips_ptr;
2466 struct drm_clip_rect *clips = NULL;
2467 struct drm_mode_fb_dirty_cmd *r = data;
2468 struct drm_mode_object *obj;
2469 struct drm_framebuffer *fb;
2470 unsigned flags;
2471 int num_clips;
2472 int ret;
2473
2474 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2475 return -EINVAL;
2476
2477 mutex_lock(&dev->mode_config.mutex);
2478 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2479 if (!obj) {
2480 ret = -EINVAL;
2481 goto out_err1;
2482 }
2483 fb = obj_to_fb(obj);
2484
2485 num_clips = r->num_clips;
2486 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2487
2488 if (!num_clips != !clips_ptr) {
2489 ret = -EINVAL;
2490 goto out_err1;
2491 }
2492
2493 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2494
2495 /* If userspace annotates copy, clips must come in pairs */
2496 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2497 ret = -EINVAL;
2498 goto out_err1;
2499 }
2500
2501 if (num_clips && clips_ptr) {
2502 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2503 ret = -EINVAL;
2504 goto out_err1;
2505 }
2506 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2507 if (!clips) {
2508 ret = -ENOMEM;
2509 goto out_err1;
2510 }
2511
2512 ret = copy_from_user(clips, clips_ptr,
2513 num_clips * sizeof(*clips));
2514 if (ret) {
2515 ret = -EFAULT;
2516 goto out_err2;
2517 }
2518 }
2519
2520 if (fb->funcs->dirty) {
2521 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
2522 clips, num_clips);
2523 } else {
2524 ret = -ENOSYS;
2525 goto out_err2;
2526 }
2527
2528 out_err2:
2529 kfree(clips);
2530 out_err1:
2531 mutex_unlock(&dev->mode_config.mutex);
2532 return ret;
2533 }
2534
2535
2536 /**
2537 * drm_fb_release - remove and free the FBs on this file
2538 * @filp: file * from the ioctl
2539 *
2540 * LOCKING:
2541 * Takes mode config lock.
2542 *
2543 * Destroy all the FBs associated with @filp.
2544 *
2545 * Called by the user via ioctl.
2546 *
2547 * RETURNS:
2548 * Zero on success, errno on failure.
2549 */
2550 void drm_fb_release(struct drm_file *priv)
2551 {
2552 struct drm_device *dev = priv->minor->dev;
2553 struct drm_framebuffer *fb, *tfb;
2554
2555 mutex_lock(&dev->mode_config.mutex);
2556 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2557 drm_framebuffer_remove(fb);
2558 }
2559 mutex_unlock(&dev->mode_config.mutex);
2560 }
2561
2562 /**
2563 * drm_mode_attachmode - add a mode to the user mode list
2564 * @dev: DRM device
2565 * @connector: connector to add the mode to
2566 * @mode: mode to add
2567 *
2568 * Add @mode to @connector's user mode list.
2569 */
2570 static void drm_mode_attachmode(struct drm_device *dev,
2571 struct drm_connector *connector,
2572 struct drm_display_mode *mode)
2573 {
2574 list_add_tail(&mode->head, &connector->user_modes);
2575 }
2576
2577 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
2578 const struct drm_display_mode *mode)
2579 {
2580 struct drm_connector *connector;
2581 int ret = 0;
2582 struct drm_display_mode *dup_mode, *next;
2583 LIST_HEAD(list);
2584
2585 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2586 if (!connector->encoder)
2587 continue;
2588 if (connector->encoder->crtc == crtc) {
2589 dup_mode = drm_mode_duplicate(dev, mode);
2590 if (!dup_mode) {
2591 ret = -ENOMEM;
2592 goto out;
2593 }
2594 list_add_tail(&dup_mode->head, &list);
2595 }
2596 }
2597
2598 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2599 if (!connector->encoder)
2600 continue;
2601 if (connector->encoder->crtc == crtc)
2602 list_move_tail(list.next, &connector->user_modes);
2603 }
2604
2605 WARN_ON(!list_empty(&list));
2606
2607 out:
2608 list_for_each_entry_safe(dup_mode, next, &list, head)
2609 drm_mode_destroy(dev, dup_mode);
2610
2611 return ret;
2612 }
2613 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
2614
2615 static int drm_mode_detachmode(struct drm_device *dev,
2616 struct drm_connector *connector,
2617 struct drm_display_mode *mode)
2618 {
2619 int found = 0;
2620 int ret = 0;
2621 struct drm_display_mode *match_mode, *t;
2622
2623 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
2624 if (drm_mode_equal(match_mode, mode)) {
2625 list_del(&match_mode->head);
2626 drm_mode_destroy(dev, match_mode);
2627 found = 1;
2628 break;
2629 }
2630 }
2631
2632 if (!found)
2633 ret = -EINVAL;
2634
2635 return ret;
2636 }
2637
2638 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2639 {
2640 struct drm_connector *connector;
2641
2642 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2643 drm_mode_detachmode(dev, connector, mode);
2644 }
2645 return 0;
2646 }
2647 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2648
2649 /**
2650 * drm_fb_attachmode - Attach a user mode to an connector
2651 * @inode: inode from the ioctl
2652 * @filp: file * from the ioctl
2653 * @cmd: cmd from ioctl
2654 * @arg: arg from ioctl
2655 *
2656 * This attaches a user specified mode to an connector.
2657 * Called by the user via ioctl.
2658 *
2659 * RETURNS:
2660 * Zero on success, errno on failure.
2661 */
2662 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2663 void *data, struct drm_file *file_priv)
2664 {
2665 struct drm_mode_mode_cmd *mode_cmd = data;
2666 struct drm_connector *connector;
2667 struct drm_display_mode *mode;
2668 struct drm_mode_object *obj;
2669 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2670 int ret;
2671
2672 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2673 return -EINVAL;
2674
2675 mutex_lock(&dev->mode_config.mutex);
2676
2677 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2678 if (!obj) {
2679 ret = -EINVAL;
2680 goto out;
2681 }
2682 connector = obj_to_connector(obj);
2683
2684 mode = drm_mode_create(dev);
2685 if (!mode) {
2686 ret = -ENOMEM;
2687 goto out;
2688 }
2689
2690 ret = drm_crtc_convert_umode(mode, umode);
2691 if (ret) {
2692 DRM_DEBUG_KMS("Invalid mode\n");
2693 drm_mode_destroy(dev, mode);
2694 goto out;
2695 }
2696
2697 drm_mode_attachmode(dev, connector, mode);
2698 out:
2699 mutex_unlock(&dev->mode_config.mutex);
2700 return ret;
2701 }
2702
2703
2704 /**
2705 * drm_fb_detachmode - Detach a user specified mode from an connector
2706 * @inode: inode from the ioctl
2707 * @filp: file * from the ioctl
2708 * @cmd: cmd from ioctl
2709 * @arg: arg from ioctl
2710 *
2711 * Called by the user via ioctl.
2712 *
2713 * RETURNS:
2714 * Zero on success, errno on failure.
2715 */
2716 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2717 void *data, struct drm_file *file_priv)
2718 {
2719 struct drm_mode_object *obj;
2720 struct drm_mode_mode_cmd *mode_cmd = data;
2721 struct drm_connector *connector;
2722 struct drm_display_mode mode;
2723 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2724 int ret;
2725
2726 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2727 return -EINVAL;
2728
2729 mutex_lock(&dev->mode_config.mutex);
2730
2731 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2732 if (!obj) {
2733 ret = -EINVAL;
2734 goto out;
2735 }
2736 connector = obj_to_connector(obj);
2737
2738 ret = drm_crtc_convert_umode(&mode, umode);
2739 if (ret) {
2740 DRM_DEBUG_KMS("Invalid mode\n");
2741 goto out;
2742 }
2743
2744 ret = drm_mode_detachmode(dev, connector, &mode);
2745 out:
2746 mutex_unlock(&dev->mode_config.mutex);
2747 return ret;
2748 }
2749
2750 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2751 const char *name, int num_values)
2752 {
2753 struct drm_property *property = NULL;
2754 int ret;
2755
2756 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2757 if (!property)
2758 return NULL;
2759
2760 if (num_values) {
2761 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2762 if (!property->values)
2763 goto fail;
2764 }
2765
2766 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2767 if (ret)
2768 goto fail;
2769
2770 property->flags = flags;
2771 property->num_values = num_values;
2772 INIT_LIST_HEAD(&property->enum_blob_list);
2773
2774 if (name) {
2775 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2776 property->name[DRM_PROP_NAME_LEN-1] = '\0';
2777 }
2778
2779 list_add_tail(&property->head, &dev->mode_config.property_list);
2780 return property;
2781 fail:
2782 kfree(property->values);
2783 kfree(property);
2784 return NULL;
2785 }
2786 EXPORT_SYMBOL(drm_property_create);
2787
2788 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
2789 const char *name,
2790 const struct drm_prop_enum_list *props,
2791 int num_values)
2792 {
2793 struct drm_property *property;
2794 int i, ret;
2795
2796 flags |= DRM_MODE_PROP_ENUM;
2797
2798 property = drm_property_create(dev, flags, name, num_values);
2799 if (!property)
2800 return NULL;
2801
2802 for (i = 0; i < num_values; i++) {
2803 ret = drm_property_add_enum(property, i,
2804 props[i].type,
2805 props[i].name);
2806 if (ret) {
2807 drm_property_destroy(dev, property);
2808 return NULL;
2809 }
2810 }
2811
2812 return property;
2813 }
2814 EXPORT_SYMBOL(drm_property_create_enum);
2815
2816 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
2817 int flags, const char *name,
2818 const struct drm_prop_enum_list *props,
2819 int num_values)
2820 {
2821 struct drm_property *property;
2822 int i, ret;
2823
2824 flags |= DRM_MODE_PROP_BITMASK;
2825
2826 property = drm_property_create(dev, flags, name, num_values);
2827 if (!property)
2828 return NULL;
2829
2830 for (i = 0; i < num_values; i++) {
2831 ret = drm_property_add_enum(property, i,
2832 props[i].type,
2833 props[i].name);
2834 if (ret) {
2835 drm_property_destroy(dev, property);
2836 return NULL;
2837 }
2838 }
2839
2840 return property;
2841 }
2842 EXPORT_SYMBOL(drm_property_create_bitmask);
2843
2844 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
2845 const char *name,
2846 uint64_t min, uint64_t max)
2847 {
2848 struct drm_property *property;
2849
2850 flags |= DRM_MODE_PROP_RANGE;
2851
2852 property = drm_property_create(dev, flags, name, 2);
2853 if (!property)
2854 return NULL;
2855
2856 property->values[0] = min;
2857 property->values[1] = max;
2858
2859 return property;
2860 }
2861 EXPORT_SYMBOL(drm_property_create_range);
2862
2863 int drm_property_add_enum(struct drm_property *property, int index,
2864 uint64_t value, const char *name)
2865 {
2866 struct drm_property_enum *prop_enum;
2867
2868 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
2869 return -EINVAL;
2870
2871 /*
2872 * Bitmask enum properties have the additional constraint of values
2873 * from 0 to 63
2874 */
2875 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
2876 return -EINVAL;
2877
2878 if (!list_empty(&property->enum_blob_list)) {
2879 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2880 if (prop_enum->value == value) {
2881 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2882 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2883 return 0;
2884 }
2885 }
2886 }
2887
2888 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2889 if (!prop_enum)
2890 return -ENOMEM;
2891
2892 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2893 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2894 prop_enum->value = value;
2895
2896 property->values[index] = value;
2897 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2898 return 0;
2899 }
2900 EXPORT_SYMBOL(drm_property_add_enum);
2901
2902 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2903 {
2904 struct drm_property_enum *prop_enum, *pt;
2905
2906 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2907 list_del(&prop_enum->head);
2908 kfree(prop_enum);
2909 }
2910
2911 if (property->num_values)
2912 kfree(property->values);
2913 drm_mode_object_put(dev, &property->base);
2914 list_del(&property->head);
2915 kfree(property);
2916 }
2917 EXPORT_SYMBOL(drm_property_destroy);
2918
2919 void drm_connector_attach_property(struct drm_connector *connector,
2920 struct drm_property *property, uint64_t init_val)
2921 {
2922 drm_object_attach_property(&connector->base, property, init_val);
2923 }
2924 EXPORT_SYMBOL(drm_connector_attach_property);
2925
2926 int drm_connector_property_set_value(struct drm_connector *connector,
2927 struct drm_property *property, uint64_t value)
2928 {
2929 return drm_object_property_set_value(&connector->base, property, value);
2930 }
2931 EXPORT_SYMBOL(drm_connector_property_set_value);
2932
2933 int drm_connector_property_get_value(struct drm_connector *connector,
2934 struct drm_property *property, uint64_t *val)
2935 {
2936 return drm_object_property_get_value(&connector->base, property, val);
2937 }
2938 EXPORT_SYMBOL(drm_connector_property_get_value);
2939
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 WARN(1, "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
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
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
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 mutex_lock(&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 mutex_unlock(&dev->mode_config.mutex);
3092 return ret;
3093 }
3094
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 = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3105 if (!blob)
3106 return NULL;
3107
3108 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3109 if (ret) {
3110 kfree(blob);
3111 return NULL;
3112 }
3113
3114 blob->length = length;
3115
3116 memcpy(blob->data, data, length);
3117
3118 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3119 return blob;
3120 }
3121
3122 static void drm_property_destroy_blob(struct drm_device *dev,
3123 struct drm_property_blob *blob)
3124 {
3125 drm_mode_object_put(dev, &blob->base);
3126 list_del(&blob->head);
3127 kfree(blob);
3128 }
3129
3130 int drm_mode_getblob_ioctl(struct drm_device *dev,
3131 void *data, struct drm_file *file_priv)
3132 {
3133 struct drm_mode_object *obj;
3134 struct drm_mode_get_blob *out_resp = data;
3135 struct drm_property_blob *blob;
3136 int ret = 0;
3137 void __user *blob_ptr;
3138
3139 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3140 return -EINVAL;
3141
3142 mutex_lock(&dev->mode_config.mutex);
3143 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3144 if (!obj) {
3145 ret = -EINVAL;
3146 goto done;
3147 }
3148 blob = obj_to_blob(obj);
3149
3150 if (out_resp->length == blob->length) {
3151 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3152 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3153 ret = -EFAULT;
3154 goto done;
3155 }
3156 }
3157 out_resp->length = blob->length;
3158
3159 done:
3160 mutex_unlock(&dev->mode_config.mutex);
3161 return ret;
3162 }
3163
3164 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3165 struct edid *edid)
3166 {
3167 struct drm_device *dev = connector->dev;
3168 int ret, size;
3169
3170 if (connector->edid_blob_ptr)
3171 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3172
3173 /* Delete edid, when there is none. */
3174 if (!edid) {
3175 connector->edid_blob_ptr = NULL;
3176 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
3177 return ret;
3178 }
3179
3180 size = EDID_LENGTH * (1 + edid->extensions);
3181 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3182 size, edid);
3183
3184 ret = drm_connector_property_set_value(connector,
3185 dev->mode_config.edid_property,
3186 connector->edid_blob_ptr->base.id);
3187
3188 return ret;
3189 }
3190 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3191
3192 static bool drm_property_change_is_valid(struct drm_property *property,
3193 uint64_t value)
3194 {
3195 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3196 return false;
3197 if (property->flags & DRM_MODE_PROP_RANGE) {
3198 if (value < property->values[0] || value > property->values[1])
3199 return false;
3200 return true;
3201 } else if (property->flags & DRM_MODE_PROP_BITMASK) {
3202 int i;
3203 uint64_t valid_mask = 0;
3204 for (i = 0; i < property->num_values; i++)
3205 valid_mask |= (1ULL << property->values[i]);
3206 return !(value & ~valid_mask);
3207 } else {
3208 int i;
3209 for (i = 0; i < property->num_values; i++)
3210 if (property->values[i] == value)
3211 return true;
3212 return false;
3213 }
3214 }
3215
3216 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3217 void *data, struct drm_file *file_priv)
3218 {
3219 struct drm_mode_connector_set_property *conn_set_prop = data;
3220 struct drm_mode_obj_set_property obj_set_prop = {
3221 .value = conn_set_prop->value,
3222 .prop_id = conn_set_prop->prop_id,
3223 .obj_id = conn_set_prop->connector_id,
3224 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3225 };
3226
3227 /* It does all the locking and checking we need */
3228 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3229 }
3230
3231 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3232 struct drm_property *property,
3233 uint64_t value)
3234 {
3235 int ret = -EINVAL;
3236 struct drm_connector *connector = obj_to_connector(obj);
3237
3238 /* Do DPMS ourselves */
3239 if (property == connector->dev->mode_config.dpms_property) {
3240 if (connector->funcs->dpms)
3241 (*connector->funcs->dpms)(connector, (int)value);
3242 ret = 0;
3243 } else if (connector->funcs->set_property)
3244 ret = connector->funcs->set_property(connector, property, value);
3245
3246 /* store the property value if successful */
3247 if (!ret)
3248 drm_connector_property_set_value(connector, property, value);
3249 return ret;
3250 }
3251
3252 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3253 struct drm_property *property,
3254 uint64_t value)
3255 {
3256 int ret = -EINVAL;
3257 struct drm_crtc *crtc = obj_to_crtc(obj);
3258
3259 if (crtc->funcs->set_property)
3260 ret = crtc->funcs->set_property(crtc, property, value);
3261 if (!ret)
3262 drm_object_property_set_value(obj, property, value);
3263
3264 return ret;
3265 }
3266
3267 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3268 struct drm_property *property,
3269 uint64_t value)
3270 {
3271 int ret = -EINVAL;
3272 struct drm_plane *plane = obj_to_plane(obj);
3273
3274 if (plane->funcs->set_property)
3275 ret = plane->funcs->set_property(plane, property, value);
3276 if (!ret)
3277 drm_object_property_set_value(obj, property, value);
3278
3279 return ret;
3280 }
3281
3282 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3283 struct drm_file *file_priv)
3284 {
3285 struct drm_mode_obj_get_properties *arg = data;
3286 struct drm_mode_object *obj;
3287 int ret = 0;
3288 int i;
3289 int copied = 0;
3290 int props_count = 0;
3291 uint32_t __user *props_ptr;
3292 uint64_t __user *prop_values_ptr;
3293
3294 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3295 return -EINVAL;
3296
3297 mutex_lock(&dev->mode_config.mutex);
3298
3299 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3300 if (!obj) {
3301 ret = -EINVAL;
3302 goto out;
3303 }
3304 if (!obj->properties) {
3305 ret = -EINVAL;
3306 goto out;
3307 }
3308
3309 props_count = obj->properties->count;
3310
3311 /* This ioctl is called twice, once to determine how much space is
3312 * needed, and the 2nd time to fill it. */
3313 if ((arg->count_props >= props_count) && props_count) {
3314 copied = 0;
3315 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3316 prop_values_ptr = (uint64_t __user *)(unsigned long)
3317 (arg->prop_values_ptr);
3318 for (i = 0; i < props_count; i++) {
3319 if (put_user(obj->properties->ids[i],
3320 props_ptr + copied)) {
3321 ret = -EFAULT;
3322 goto out;
3323 }
3324 if (put_user(obj->properties->values[i],
3325 prop_values_ptr + copied)) {
3326 ret = -EFAULT;
3327 goto out;
3328 }
3329 copied++;
3330 }
3331 }
3332 arg->count_props = props_count;
3333 out:
3334 mutex_unlock(&dev->mode_config.mutex);
3335 return ret;
3336 }
3337
3338 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3339 struct drm_file *file_priv)
3340 {
3341 struct drm_mode_obj_set_property *arg = data;
3342 struct drm_mode_object *arg_obj;
3343 struct drm_mode_object *prop_obj;
3344 struct drm_property *property;
3345 int ret = -EINVAL;
3346 int i;
3347
3348 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3349 return -EINVAL;
3350
3351 mutex_lock(&dev->mode_config.mutex);
3352
3353 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3354 if (!arg_obj)
3355 goto out;
3356 if (!arg_obj->properties)
3357 goto out;
3358
3359 for (i = 0; i < arg_obj->properties->count; i++)
3360 if (arg_obj->properties->ids[i] == arg->prop_id)
3361 break;
3362
3363 if (i == arg_obj->properties->count)
3364 goto out;
3365
3366 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3367 DRM_MODE_OBJECT_PROPERTY);
3368 if (!prop_obj)
3369 goto out;
3370 property = obj_to_property(prop_obj);
3371
3372 if (!drm_property_change_is_valid(property, arg->value))
3373 goto out;
3374
3375 switch (arg_obj->type) {
3376 case DRM_MODE_OBJECT_CONNECTOR:
3377 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3378 arg->value);
3379 break;
3380 case DRM_MODE_OBJECT_CRTC:
3381 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3382 break;
3383 case DRM_MODE_OBJECT_PLANE:
3384 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3385 break;
3386 }
3387
3388 out:
3389 mutex_unlock(&dev->mode_config.mutex);
3390 return ret;
3391 }
3392
3393 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3394 struct drm_encoder *encoder)
3395 {
3396 int i;
3397
3398 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3399 if (connector->encoder_ids[i] == 0) {
3400 connector->encoder_ids[i] = encoder->base.id;
3401 return 0;
3402 }
3403 }
3404 return -ENOMEM;
3405 }
3406 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3407
3408 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
3409 struct drm_encoder *encoder)
3410 {
3411 int i;
3412 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3413 if (connector->encoder_ids[i] == encoder->base.id) {
3414 connector->encoder_ids[i] = 0;
3415 if (connector->encoder == encoder)
3416 connector->encoder = NULL;
3417 break;
3418 }
3419 }
3420 }
3421 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
3422
3423 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3424 int gamma_size)
3425 {
3426 crtc->gamma_size = gamma_size;
3427
3428 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3429 if (!crtc->gamma_store) {
3430 crtc->gamma_size = 0;
3431 return -ENOMEM;
3432 }
3433
3434 return 0;
3435 }
3436 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3437
3438 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3439 void *data, struct drm_file *file_priv)
3440 {
3441 struct drm_mode_crtc_lut *crtc_lut = data;
3442 struct drm_mode_object *obj;
3443 struct drm_crtc *crtc;
3444 void *r_base, *g_base, *b_base;
3445 int size;
3446 int ret = 0;
3447
3448 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3449 return -EINVAL;
3450
3451 mutex_lock(&dev->mode_config.mutex);
3452 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3453 if (!obj) {
3454 ret = -EINVAL;
3455 goto out;
3456 }
3457 crtc = obj_to_crtc(obj);
3458
3459 if (crtc->funcs->gamma_set == NULL) {
3460 ret = -ENOSYS;
3461 goto out;
3462 }
3463
3464 /* memcpy into gamma store */
3465 if (crtc_lut->gamma_size != crtc->gamma_size) {
3466 ret = -EINVAL;
3467 goto out;
3468 }
3469
3470 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3471 r_base = crtc->gamma_store;
3472 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
3473 ret = -EFAULT;
3474 goto out;
3475 }
3476
3477 g_base = r_base + size;
3478 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
3479 ret = -EFAULT;
3480 goto out;
3481 }
3482
3483 b_base = g_base + size;
3484 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
3485 ret = -EFAULT;
3486 goto out;
3487 }
3488
3489 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
3490
3491 out:
3492 mutex_unlock(&dev->mode_config.mutex);
3493 return ret;
3494
3495 }
3496
3497 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
3498 void *data, struct drm_file *file_priv)
3499 {
3500 struct drm_mode_crtc_lut *crtc_lut = data;
3501 struct drm_mode_object *obj;
3502 struct drm_crtc *crtc;
3503 void *r_base, *g_base, *b_base;
3504 int size;
3505 int ret = 0;
3506
3507 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3508 return -EINVAL;
3509
3510 mutex_lock(&dev->mode_config.mutex);
3511 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3512 if (!obj) {
3513 ret = -EINVAL;
3514 goto out;
3515 }
3516 crtc = obj_to_crtc(obj);
3517
3518 /* memcpy into gamma store */
3519 if (crtc_lut->gamma_size != crtc->gamma_size) {
3520 ret = -EINVAL;
3521 goto out;
3522 }
3523
3524 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3525 r_base = crtc->gamma_store;
3526 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
3527 ret = -EFAULT;
3528 goto out;
3529 }
3530
3531 g_base = r_base + size;
3532 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
3533 ret = -EFAULT;
3534 goto out;
3535 }
3536
3537 b_base = g_base + size;
3538 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
3539 ret = -EFAULT;
3540 goto out;
3541 }
3542 out:
3543 mutex_unlock(&dev->mode_config.mutex);
3544 return ret;
3545 }
3546
3547 int drm_mode_page_flip_ioctl(struct drm_device *dev,
3548 void *data, struct drm_file *file_priv)
3549 {
3550 struct drm_mode_crtc_page_flip *page_flip = data;
3551 struct drm_mode_object *obj;
3552 struct drm_crtc *crtc;
3553 struct drm_framebuffer *fb;
3554 struct drm_pending_vblank_event *e = NULL;
3555 unsigned long flags;
3556 int hdisplay, vdisplay;
3557 int ret = -EINVAL;
3558
3559 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
3560 page_flip->reserved != 0)
3561 return -EINVAL;
3562
3563 mutex_lock(&dev->mode_config.mutex);
3564 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
3565 if (!obj)
3566 goto out;
3567 crtc = obj_to_crtc(obj);
3568
3569 if (crtc->fb == NULL) {
3570 /* The framebuffer is currently unbound, presumably
3571 * due to a hotplug event, that userspace has not
3572 * yet discovered.
3573 */
3574 ret = -EBUSY;
3575 goto out;
3576 }
3577
3578 if (crtc->funcs->page_flip == NULL)
3579 goto out;
3580
3581 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
3582 if (!obj)
3583 goto out;
3584 fb = obj_to_fb(obj);
3585
3586 hdisplay = crtc->mode.hdisplay;
3587 vdisplay = crtc->mode.vdisplay;
3588
3589 if (crtc->invert_dimensions)
3590 swap(hdisplay, vdisplay);
3591
3592 if (hdisplay > fb->width ||
3593 vdisplay > fb->height ||
3594 crtc->x > fb->width - hdisplay ||
3595 crtc->y > fb->height - vdisplay) {
3596 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
3597 fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y,
3598 crtc->invert_dimensions ? " (inverted)" : "");
3599 ret = -ENOSPC;
3600 goto out;
3601 }
3602
3603 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3604 ret = -ENOMEM;
3605 spin_lock_irqsave(&dev->event_lock, flags);
3606 if (file_priv->event_space < sizeof e->event) {
3607 spin_unlock_irqrestore(&dev->event_lock, flags);
3608 goto out;
3609 }
3610 file_priv->event_space -= sizeof e->event;
3611 spin_unlock_irqrestore(&dev->event_lock, flags);
3612
3613 e = kzalloc(sizeof *e, GFP_KERNEL);
3614 if (e == NULL) {
3615 spin_lock_irqsave(&dev->event_lock, flags);
3616 file_priv->event_space += sizeof e->event;
3617 spin_unlock_irqrestore(&dev->event_lock, flags);
3618 goto out;
3619 }
3620
3621 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
3622 e->event.base.length = sizeof e->event;
3623 e->event.user_data = page_flip->user_data;
3624 e->base.event = &e->event.base;
3625 e->base.file_priv = file_priv;
3626 e->base.destroy =
3627 (void (*) (struct drm_pending_event *)) kfree;
3628 }
3629
3630 ret = crtc->funcs->page_flip(crtc, fb, e);
3631 if (ret) {
3632 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3633 spin_lock_irqsave(&dev->event_lock, flags);
3634 file_priv->event_space += sizeof e->event;
3635 spin_unlock_irqrestore(&dev->event_lock, flags);
3636 kfree(e);
3637 }
3638 }
3639
3640 out:
3641 mutex_unlock(&dev->mode_config.mutex);
3642 return ret;
3643 }
3644
3645 void drm_mode_config_reset(struct drm_device *dev)
3646 {
3647 struct drm_crtc *crtc;
3648 struct drm_encoder *encoder;
3649 struct drm_connector *connector;
3650
3651 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
3652 if (crtc->funcs->reset)
3653 crtc->funcs->reset(crtc);
3654
3655 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
3656 if (encoder->funcs->reset)
3657 encoder->funcs->reset(encoder);
3658
3659 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
3660 if (connector->funcs->reset)
3661 connector->funcs->reset(connector);
3662 }
3663 EXPORT_SYMBOL(drm_mode_config_reset);
3664
3665 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
3666 void *data, struct drm_file *file_priv)
3667 {
3668 struct drm_mode_create_dumb *args = data;
3669
3670 if (!dev->driver->dumb_create)
3671 return -ENOSYS;
3672 return dev->driver->dumb_create(file_priv, dev, args);
3673 }
3674
3675 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
3676 void *data, struct drm_file *file_priv)
3677 {
3678 struct drm_mode_map_dumb *args = data;
3679
3680 /* call driver ioctl to get mmap offset */
3681 if (!dev->driver->dumb_map_offset)
3682 return -ENOSYS;
3683
3684 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
3685 }
3686
3687 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
3688 void *data, struct drm_file *file_priv)
3689 {
3690 struct drm_mode_destroy_dumb *args = data;
3691
3692 if (!dev->driver->dumb_destroy)
3693 return -ENOSYS;
3694
3695 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
3696 }
3697
3698 /*
3699 * Just need to support RGB formats here for compat with code that doesn't
3700 * use pixel formats directly yet.
3701 */
3702 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
3703 int *bpp)
3704 {
3705 switch (format) {
3706 case DRM_FORMAT_RGB332:
3707 case DRM_FORMAT_BGR233:
3708 *depth = 8;
3709 *bpp = 8;
3710 break;
3711 case DRM_FORMAT_XRGB1555:
3712 case DRM_FORMAT_XBGR1555:
3713 case DRM_FORMAT_RGBX5551:
3714 case DRM_FORMAT_BGRX5551:
3715 case DRM_FORMAT_ARGB1555:
3716 case DRM_FORMAT_ABGR1555:
3717 case DRM_FORMAT_RGBA5551:
3718 case DRM_FORMAT_BGRA5551:
3719 *depth = 15;
3720 *bpp = 16;
3721 break;
3722 case DRM_FORMAT_RGB565:
3723 case DRM_FORMAT_BGR565:
3724 *depth = 16;
3725 *bpp = 16;
3726 break;
3727 case DRM_FORMAT_RGB888:
3728 case DRM_FORMAT_BGR888:
3729 *depth = 24;
3730 *bpp = 24;
3731 break;
3732 case DRM_FORMAT_XRGB8888:
3733 case DRM_FORMAT_XBGR8888:
3734 case DRM_FORMAT_RGBX8888:
3735 case DRM_FORMAT_BGRX8888:
3736 *depth = 24;
3737 *bpp = 32;
3738 break;
3739 case DRM_FORMAT_XRGB2101010:
3740 case DRM_FORMAT_XBGR2101010:
3741 case DRM_FORMAT_RGBX1010102:
3742 case DRM_FORMAT_BGRX1010102:
3743 case DRM_FORMAT_ARGB2101010:
3744 case DRM_FORMAT_ABGR2101010:
3745 case DRM_FORMAT_RGBA1010102:
3746 case DRM_FORMAT_BGRA1010102:
3747 *depth = 30;
3748 *bpp = 32;
3749 break;
3750 case DRM_FORMAT_ARGB8888:
3751 case DRM_FORMAT_ABGR8888:
3752 case DRM_FORMAT_RGBA8888:
3753 case DRM_FORMAT_BGRA8888:
3754 *depth = 32;
3755 *bpp = 32;
3756 break;
3757 default:
3758 DRM_DEBUG_KMS("unsupported pixel format\n");
3759 *depth = 0;
3760 *bpp = 0;
3761 break;
3762 }
3763 }
3764 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
3765
3766 /**
3767 * drm_format_num_planes - get the number of planes for format
3768 * @format: pixel format (DRM_FORMAT_*)
3769 *
3770 * RETURNS:
3771 * The number of planes used by the specified pixel format.
3772 */
3773 int drm_format_num_planes(uint32_t format)
3774 {
3775 switch (format) {
3776 case DRM_FORMAT_YUV410:
3777 case DRM_FORMAT_YVU410:
3778 case DRM_FORMAT_YUV411:
3779 case DRM_FORMAT_YVU411:
3780 case DRM_FORMAT_YUV420:
3781 case DRM_FORMAT_YVU420:
3782 case DRM_FORMAT_YUV422:
3783 case DRM_FORMAT_YVU422:
3784 case DRM_FORMAT_YUV444:
3785 case DRM_FORMAT_YVU444:
3786 return 3;
3787 case DRM_FORMAT_NV12:
3788 case DRM_FORMAT_NV21:
3789 case DRM_FORMAT_NV16:
3790 case DRM_FORMAT_NV61:
3791 case DRM_FORMAT_NV24:
3792 case DRM_FORMAT_NV42:
3793 return 2;
3794 default:
3795 return 1;
3796 }
3797 }
3798 EXPORT_SYMBOL(drm_format_num_planes);
3799
3800 /**
3801 * drm_format_plane_cpp - determine the bytes per pixel value
3802 * @format: pixel format (DRM_FORMAT_*)
3803 * @plane: plane index
3804 *
3805 * RETURNS:
3806 * The bytes per pixel value for the specified plane.
3807 */
3808 int drm_format_plane_cpp(uint32_t format, int plane)
3809 {
3810 unsigned int depth;
3811 int bpp;
3812
3813 if (plane >= drm_format_num_planes(format))
3814 return 0;
3815
3816 switch (format) {
3817 case DRM_FORMAT_YUYV:
3818 case DRM_FORMAT_YVYU:
3819 case DRM_FORMAT_UYVY:
3820 case DRM_FORMAT_VYUY:
3821 return 2;
3822 case DRM_FORMAT_NV12:
3823 case DRM_FORMAT_NV21:
3824 case DRM_FORMAT_NV16:
3825 case DRM_FORMAT_NV61:
3826 case DRM_FORMAT_NV24:
3827 case DRM_FORMAT_NV42:
3828 return plane ? 2 : 1;
3829 case DRM_FORMAT_YUV410:
3830 case DRM_FORMAT_YVU410:
3831 case DRM_FORMAT_YUV411:
3832 case DRM_FORMAT_YVU411:
3833 case DRM_FORMAT_YUV420:
3834 case DRM_FORMAT_YVU420:
3835 case DRM_FORMAT_YUV422:
3836 case DRM_FORMAT_YVU422:
3837 case DRM_FORMAT_YUV444:
3838 case DRM_FORMAT_YVU444:
3839 return 1;
3840 default:
3841 drm_fb_get_bpp_depth(format, &depth, &bpp);
3842 return bpp >> 3;
3843 }
3844 }
3845 EXPORT_SYMBOL(drm_format_plane_cpp);
3846
3847 /**
3848 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
3849 * @format: pixel format (DRM_FORMAT_*)
3850 *
3851 * RETURNS:
3852 * The horizontal chroma subsampling factor for the
3853 * specified pixel format.
3854 */
3855 int drm_format_horz_chroma_subsampling(uint32_t format)
3856 {
3857 switch (format) {
3858 case DRM_FORMAT_YUV411:
3859 case DRM_FORMAT_YVU411:
3860 case DRM_FORMAT_YUV410:
3861 case DRM_FORMAT_YVU410:
3862 return 4;
3863 case DRM_FORMAT_YUYV:
3864 case DRM_FORMAT_YVYU:
3865 case DRM_FORMAT_UYVY:
3866 case DRM_FORMAT_VYUY:
3867 case DRM_FORMAT_NV12:
3868 case DRM_FORMAT_NV21:
3869 case DRM_FORMAT_NV16:
3870 case DRM_FORMAT_NV61:
3871 case DRM_FORMAT_YUV422:
3872 case DRM_FORMAT_YVU422:
3873 case DRM_FORMAT_YUV420:
3874 case DRM_FORMAT_YVU420:
3875 return 2;
3876 default:
3877 return 1;
3878 }
3879 }
3880 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
3881
3882 /**
3883 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
3884 * @format: pixel format (DRM_FORMAT_*)
3885 *
3886 * RETURNS:
3887 * The vertical chroma subsampling factor for the
3888 * specified pixel format.
3889 */
3890 int drm_format_vert_chroma_subsampling(uint32_t format)
3891 {
3892 switch (format) {
3893 case DRM_FORMAT_YUV410:
3894 case DRM_FORMAT_YVU410:
3895 return 4;
3896 case DRM_FORMAT_YUV420:
3897 case DRM_FORMAT_YVU420:
3898 case DRM_FORMAT_NV12:
3899 case DRM_FORMAT_NV21:
3900 return 2;
3901 default:
3902 return 1;
3903 }
3904 }
3905 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
Linus' kernel tree