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ttm: export functions to allow qxl do its own iomapping
[deliverable/linux.git] / drivers / gpu / drm / drm_crtc.c
CommitLineData
f453ba04
DA		 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>
5a0e3ad6 33#include <linux/slab.h>
2d1a8a48 34#include <linux/export.h>
760285e7
DH		 35#include <drm/drmP.h>
36#include <drm/drm_crtc.h>
37#include <drm/drm_edid.h>
38#include <drm/drm_fourcc.h>
f453ba04 39
84849903
DV		 40/**
41 * drm_modeset_lock_all - take all modeset locks
42 * @dev: drm device
43 *
44 * This function takes all modeset locks, suitable where a more fine-grained
45 * scheme isn't (yet) implemented.
46 */
47void drm_modeset_lock_all(struct drm_device *dev)
48{
29494c17
DV		 49 struct drm_crtc *crtc;
50
84849903 51 mutex_lock(&dev->mode_config.mutex);
29494c17
DV		 52
53 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
54 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
84849903
DV		 55}
56EXPORT_SYMBOL(drm_modeset_lock_all);
57
58/**
59 * drm_modeset_unlock_all - drop all modeset locks
60 * @dev: device
61 */
62void drm_modeset_unlock_all(struct drm_device *dev)
63{
29494c17
DV		 64 struct drm_crtc *crtc;
65
66 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
67 mutex_unlock(&crtc->mutex);
68
84849903
DV		 69 mutex_unlock(&dev->mode_config.mutex);
70}
71EXPORT_SYMBOL(drm_modeset_unlock_all);
72
6aed8ec3
DV		 73/**
74 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
75 * @dev: device
76 */
77void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
78{
79 struct drm_crtc *crtc;
80
81 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
82 WARN_ON(!mutex_is_locked(&crtc->mutex));
83
84 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
85}
86EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
87
f453ba04
DA		 88/* Avoid boilerplate. I'm tired of typing. */
89#define DRM_ENUM_NAME_FN(fnname, list) \
90 char *fnname(int val) \
91 { \
92 int i; \
93 for (i = 0; i < ARRAY_SIZE(list); i++) { \
94 if (list[i].type == val) \
95 return list[i].name; \
96 } \
97 return "(unknown)"; \
98 }
99
100/*
101 * Global properties
102 */
103static struct drm_prop_enum_list drm_dpms_enum_list[] =
104{ { DRM_MODE_DPMS_ON, "On" },
105 { DRM_MODE_DPMS_STANDBY, "Standby" },
106 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
107 { DRM_MODE_DPMS_OFF, "Off" }
108};
109
110DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
111
112/*
113 * Optional properties
114 */
115static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
116{
53bd8389
JB		 117 { DRM_MODE_SCALE_NONE, "None" },
118 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
119 { DRM_MODE_SCALE_CENTER, "Center" },
120 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 121};
122
123static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
124{
125 { DRM_MODE_DITHERING_OFF, "Off" },
126 { DRM_MODE_DITHERING_ON, "On" },
92897b5c 127 { DRM_MODE_DITHERING_AUTO, "Automatic" },
f453ba04
DA		 128};
129
130/*
131 * Non-global properties, but "required" for certain connectors.
132 */
133static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
134{
135 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
136 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
137 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
138};
139
140DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
141
142static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
143{
144 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
145 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
146 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
147};
148
149DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
150 drm_dvi_i_subconnector_enum_list)
151
152static struct drm_prop_enum_list drm_tv_select_enum_list[] =
153{
154 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
155 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
156 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
157 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 158 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 159};
160
161DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
162
163static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
164{
165 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
166 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
167 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
168 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 169 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 170};
171
172DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
173 drm_tv_subconnector_enum_list)
174
884840aa
JB		 175static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
176 { DRM_MODE_DIRTY_OFF, "Off" },
177 { DRM_MODE_DIRTY_ON, "On" },
178 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
179};
180
181DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
182 drm_dirty_info_enum_list)
183
f453ba04
DA		 184struct drm_conn_prop_enum_list {
185 int type;
186 char *name;
187 int count;
188};
189
190/*
191 * Connector and encoder types.
192 */
193static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
194{ { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
195 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
196 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
197 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
198 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
199 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
200 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
201 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
202 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
e76116ca
AD		 203 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
204 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
205 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
206 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
74bd3c26 207 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
e76116ca 208 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
a7331e5c 209 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
f453ba04
DA		 210};
211
212static struct drm_prop_enum_list drm_encoder_enum_list[] =
213{ { DRM_MODE_ENCODER_NONE, "None" },
214 { DRM_MODE_ENCODER_DAC, "DAC" },
215 { DRM_MODE_ENCODER_TMDS, "TMDS" },
216 { DRM_MODE_ENCODER_LVDS, "LVDS" },
217 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 218 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
f453ba04
DA		 219};
220
221char *drm_get_encoder_name(struct drm_encoder *encoder)
222{
223 static char buf[32];
224
225 snprintf(buf, 32, "%s-%d",
226 drm_encoder_enum_list[encoder->encoder_type].name,
227 encoder->base.id);
228 return buf;
229}
13a8195b 230EXPORT_SYMBOL(drm_get_encoder_name);
f453ba04
DA		 231
232char *drm_get_connector_name(struct drm_connector *connector)
233{
234 static char buf[32];
235
236 snprintf(buf, 32, "%s-%d",
237 drm_connector_enum_list[connector->connector_type].name,
238 connector->connector_type_id);
239 return buf;
240}
241EXPORT_SYMBOL(drm_get_connector_name);
242
243char *drm_get_connector_status_name(enum drm_connector_status status)
244{
245 if (status == connector_status_connected)
246 return "connected";
247 else if (status == connector_status_disconnected)
248 return "disconnected";
249 else
250 return "unknown";
251}
252
253/**
065a50ed 254 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 255 * @dev: DRM device
065a50ed
DV		 256 * @obj: object pointer, used to generate unique ID
257 * @obj_type: object type
f453ba04 258 *
f453ba04
DA		 259 * Create a unique identifier based on @ptr in @dev's identifier space. Used
260 * for tracking modes, CRTCs and connectors.
261 *
262 * RETURNS:
263 * New unique (relative to other objects in @dev) integer identifier for the
264 * object.
265 */
266static int drm_mode_object_get(struct drm_device *dev,
267 struct drm_mode_object *obj, uint32_t obj_type)
268{
f453ba04
DA		 269 int ret;
270
ad2563c2 271 mutex_lock(&dev->mode_config.idr_mutex);
2e928815
TH		 272 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
273 if (ret >= 0) {
4b096ac1
DV		 274 /*
275 * Set up the object linking under the protection of the idr
276 * lock so that other users can't see inconsistent state.
277 */
2e928815 278 obj->id = ret;
4b096ac1
DV		 279 obj->type = obj_type;
280 }
ad2563c2 281 mutex_unlock(&dev->mode_config.idr_mutex);
4b096ac1 282
2e928815 283 return ret < 0 ? ret : 0;
f453ba04
DA		 284}
285
286/**
065a50ed 287 * drm_mode_object_put - free a modeset identifer
f453ba04 288 * @dev: DRM device
065a50ed 289 * @object: object to free
f453ba04 290 *
f453ba04
DA		 291 * Free @id from @dev's unique identifier pool.
292 */
293static void drm_mode_object_put(struct drm_device *dev,
294 struct drm_mode_object *object)
295{
ad2563c2 296 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 297 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 298 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 299}
300
786b99ed
DV		 301/**
302 * drm_mode_object_find - look up a drm object with static lifetime
303 * @dev: drm device
304 * @id: id of the mode object
305 * @type: type of the mode object
306 *
307 * Note that framebuffers cannot be looked up with this functions - since those
308 * are reference counted, they need special treatment.
309 */
7a9c9060
DV		 310struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
311 uint32_t id, uint32_t type)
f453ba04 312{
ad2563c2 313 struct drm_mode_object *obj = NULL;
f453ba04 314
786b99ed
DV		 315 /* Framebuffers are reference counted and need their own lookup
316 * function.*/
317 WARN_ON(type == DRM_MODE_OBJECT_FB);
318
ad2563c2 319 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04
DA		 320 obj = idr_find(&dev->mode_config.crtc_idr, id);
321 if (!obj || (obj->type != type) || (obj->id != id))
ad2563c2
JB		 322 obj = NULL;
323 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 324
325 return obj;
326}
327EXPORT_SYMBOL(drm_mode_object_find);
328
f453ba04
DA		 329/**
330 * drm_framebuffer_init - initialize a framebuffer
331 * @dev: DRM device
065a50ed
DV		 332 * @fb: framebuffer to be initialized
333 * @funcs: ... with these functions
f453ba04 334 *
f453ba04
DA		 335 * Allocates an ID for the framebuffer's parent mode object, sets its mode
336 * functions & device file and adds it to the master fd list.
337 *
4b096ac1
DV		 338 * IMPORTANT:
339 * This functions publishes the fb and makes it available for concurrent access
340 * by other users. Which means by this point the fb _must_ be fully set up -
341 * since all the fb attributes are invariant over its lifetime, no further
342 * locking but only correct reference counting is required.
343 *
f453ba04 344 * RETURNS:
af901ca1 345 * Zero on success, error code on failure.
f453ba04
DA		 346 */
347int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
348 const struct drm_framebuffer_funcs *funcs)
349{
350 int ret;
351
4b096ac1 352 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 353 kref_init(&fb->refcount);
4b096ac1
DV		 354 INIT_LIST_HEAD(&fb->filp_head);
355 fb->dev = dev;
356 fb->funcs = funcs;
f7eff60e 357
f453ba04 358 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 359 if (ret)
4b096ac1 360 goto out;
f453ba04 361
2b677e8c
DV		 362 /* Grab the idr reference. */
363 drm_framebuffer_reference(fb);
364
f453ba04
DA		 365 dev->mode_config.num_fb++;
366 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 367out:
368 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 369
370 return 0;
371}
372EXPORT_SYMBOL(drm_framebuffer_init);
373
f7eff60e
RC		 374static void drm_framebuffer_free(struct kref *kref)
375{
376 struct drm_framebuffer *fb =
377 container_of(kref, struct drm_framebuffer, refcount);
378 fb->funcs->destroy(fb);
379}
380
2b677e8c
DV		 381static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
382 uint32_t id)
383{
384 struct drm_mode_object *obj = NULL;
385 struct drm_framebuffer *fb;
386
387 mutex_lock(&dev->mode_config.idr_mutex);
388 obj = idr_find(&dev->mode_config.crtc_idr, id);
389 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
390 fb = NULL;
391 else
392 fb = obj_to_fb(obj);
393 mutex_unlock(&dev->mode_config.idr_mutex);
394
395 return fb;
396}
397
786b99ed
DV		 398/**
399 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
400 * @dev: drm device
401 * @id: id of the fb object
402 *
403 * If successful, this grabs an additional reference to the framebuffer -
404 * callers need to make sure to eventually unreference the returned framebuffer
405 * again.
406 */
407struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
408 uint32_t id)
409{
786b99ed
DV		 410 struct drm_framebuffer *fb;
411
412 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 413 fb = __drm_framebuffer_lookup(dev, id);
786b99ed
DV		 414 if (fb)
415 kref_get(&fb->refcount);
786b99ed
DV		 416 mutex_unlock(&dev->mode_config.fb_lock);
417
418 return fb;
419}
420EXPORT_SYMBOL(drm_framebuffer_lookup);
421
f7eff60e
RC		 422/**
423 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 424 * @fb: framebuffer to unref
425 *
426 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 427 */
428void drm_framebuffer_unreference(struct drm_framebuffer *fb)
429{
f7eff60e 430 DRM_DEBUG("FB ID: %d\n", fb->base.id);
f7eff60e
RC		 431 kref_put(&fb->refcount, drm_framebuffer_free);
432}
433EXPORT_SYMBOL(drm_framebuffer_unreference);
434
435/**
436 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 437 * @fb: framebuffer
f7eff60e
RC		 438 */
439void drm_framebuffer_reference(struct drm_framebuffer *fb)
440{
441 DRM_DEBUG("FB ID: %d\n", fb->base.id);
442 kref_get(&fb->refcount);
443}
444EXPORT_SYMBOL(drm_framebuffer_reference);
445
2b677e8c
DV		 446static void drm_framebuffer_free_bug(struct kref *kref)
447{
448 BUG();
449}
450
6c2a7532
DV		 451static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
452{
453 DRM_DEBUG("FB ID: %d\n", fb->base.id);
454 kref_put(&fb->refcount, drm_framebuffer_free_bug);
455}
456
2b677e8c
DV		 457/* dev->mode_config.fb_lock must be held! */
458static void __drm_framebuffer_unregister(struct drm_device *dev,
459 struct drm_framebuffer *fb)
460{
461 mutex_lock(&dev->mode_config.idr_mutex);
462 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
463 mutex_unlock(&dev->mode_config.idr_mutex);
464
465 fb->base.id = 0;
466
6c2a7532 467 __drm_framebuffer_unreference(fb);
2b677e8c
DV		 468}
469
36206361
DV		 470/**
471 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
472 * @fb: fb to unregister
473 *
474 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
475 * those used for fbdev. Note that the caller must hold a reference of it's own,
476 * i.e. the object may not be destroyed through this call (since it'll lead to a
477 * locking inversion).
478 */
479void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
480{
2b677e8c
DV		 481 struct drm_device *dev = fb->dev;
482
483 mutex_lock(&dev->mode_config.fb_lock);
484 /* Mark fb as reaped and drop idr ref. */
485 __drm_framebuffer_unregister(dev, fb);
486 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 487}
488EXPORT_SYMBOL(drm_framebuffer_unregister_private);
489
f453ba04
DA		 490/**
491 * drm_framebuffer_cleanup - remove a framebuffer object
492 * @fb: framebuffer to remove
493 *
36206361
DV		 494 * Cleanup references to a user-created framebuffer. This function is intended
495 * to be used from the drivers ->destroy callback.
496 *
497 * Note that this function does not remove the fb from active usuage - if it is
498 * still used anywhere, hilarity can ensue since userspace could call getfb on
499 * the id and get back -EINVAL. Obviously no concern at driver unload time.
500 *
501 * Also, the framebuffer will not be removed from the lookup idr - for
502 * user-created framebuffers this will happen in in the rmfb ioctl. For
503 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
504 * drm_framebuffer_unregister_private.
f453ba04
DA		 505 */
506void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 507{
508 struct drm_device *dev = fb->dev;
8faf6b18 509
4b096ac1 510 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 511 list_del(&fb->head);
512 dev->mode_config.num_fb--;
4b096ac1 513 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 514}
515EXPORT_SYMBOL(drm_framebuffer_cleanup);
516
517/**
518 * drm_framebuffer_remove - remove and unreference a framebuffer object
519 * @fb: framebuffer to remove
520 *
f7eff60e 521 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 522 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 523 * passed-in framebuffer. Might take the modeset locks.
524 *
525 * Note that this function optimizes the cleanup away if the caller holds the
526 * last reference to the framebuffer. It is also guaranteed to not take the
527 * modeset locks in this case.
f7eff60e
RC		 528 */
529void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 530{
531 struct drm_device *dev = fb->dev;
532 struct drm_crtc *crtc;
8cf5c917 533 struct drm_plane *plane;
5ef5f72f
DA		 534 struct drm_mode_set set;
535 int ret;
f453ba04 536
4b096ac1 537 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 538
b62584e3
DV		 539 /*
540 * drm ABI mandates that we remove any deleted framebuffers from active
541 * useage. But since most sane clients only remove framebuffers they no
542 * longer need, try to optimize this away.
543 *
544 * Since we're holding a reference ourselves, observing a refcount of 1
545 * means that we're the last holder and can skip it. Also, the refcount
546 * can never increase from 1 again, so we don't need any barriers or
547 * locks.
548 *
549 * Note that userspace could try to race with use and instate a new
550 * usage _after_ we've cleared all current ones. End result will be an
551 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
552 * in this manner.
553 */
554 if (atomic_read(&fb->refcount.refcount) > 1) {
555 drm_modeset_lock_all(dev);
556 /* remove from any CRTC */
557 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
558 if (crtc->fb == fb) {
559 /* should turn off the crtc */
560 memset(&set, 0, sizeof(struct drm_mode_set));
561 set.crtc = crtc;
562 set.fb = NULL;
563 ret = drm_mode_set_config_internal(&set);
564 if (ret)
565 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
566 }
5ef5f72f 567 }
f453ba04 568
b62584e3
DV		 569 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
570 if (plane->fb == fb) {
571 /* should turn off the crtc */
572 ret = plane->funcs->disable_plane(plane);
573 if (ret)
574 DRM_ERROR("failed to disable plane with busy fb\n");
575 /* disconnect the plane from the fb and crtc: */
576 __drm_framebuffer_unreference(plane->fb);
577 plane->fb = NULL;
578 plane->crtc = NULL;
579 }
8cf5c917 580 }
b62584e3 581 drm_modeset_unlock_all(dev);
8cf5c917
JB		 582 }
583
f7eff60e 584 drm_framebuffer_unreference(fb);
f453ba04 585}
f7eff60e 586EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04
DA		 587
588/**
589 * drm_crtc_init - Initialise a new CRTC object
590 * @dev: DRM device
591 * @crtc: CRTC object to init
592 * @funcs: callbacks for the new CRTC
593 *
f453ba04 594 * Inits a new object created as base part of an driver crtc object.
6bfc56aa
VS		 595 *
596 * RETURNS:
597 * Zero on success, error code on failure.
f453ba04 598 */
6bfc56aa 599int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
f453ba04
DA		 600 const struct drm_crtc_funcs *funcs)
601{
6bfc56aa
VS		 602 int ret;
603
f453ba04
DA		 604 crtc->dev = dev;
605 crtc->funcs = funcs;
7c80e128 606 crtc->invert_dimensions = false;
f453ba04 607
84849903 608 drm_modeset_lock_all(dev);
29494c17
DV		 609 mutex_init(&crtc->mutex);
610 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
6bfc56aa
VS		 611
612 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
613 if (ret)
614 goto out;
f453ba04 615
bffd9de0
PZ		 616 crtc->base.properties = &crtc->properties;
617
f453ba04
DA		 618 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
619 dev->mode_config.num_crtc++;
6bfc56aa
VS		 620
621 out:
84849903 622 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 623
624 return ret;
f453ba04
DA		 625}
626EXPORT_SYMBOL(drm_crtc_init);
627
628/**
629 * drm_crtc_cleanup - Cleans up the core crtc usage.
630 * @crtc: CRTC to cleanup
631 *
f453ba04
DA		 632 * Cleanup @crtc. Removes from drm modesetting space
633 * does NOT free object, caller does that.
634 */
635void drm_crtc_cleanup(struct drm_crtc *crtc)
636{
637 struct drm_device *dev = crtc->dev;
638
9e1c156f
SK		 639 kfree(crtc->gamma_store);
640 crtc->gamma_store = NULL;
f453ba04
DA		 641
642 drm_mode_object_put(dev, &crtc->base);
643 list_del(&crtc->head);
644 dev->mode_config.num_crtc--;
645}
646EXPORT_SYMBOL(drm_crtc_cleanup);
647
648/**
649 * drm_mode_probed_add - add a mode to a connector's probed mode list
650 * @connector: connector the new mode
651 * @mode: mode data
652 *
f453ba04
DA		 653 * Add @mode to @connector's mode list for later use.
654 */
655void drm_mode_probed_add(struct drm_connector *connector,
656 struct drm_display_mode *mode)
657{
658 list_add(&mode->head, &connector->probed_modes);
659}
660EXPORT_SYMBOL(drm_mode_probed_add);
661
662/**
663 * drm_mode_remove - remove and free a mode
664 * @connector: connector list to modify
665 * @mode: mode to remove
666 *
f453ba04
DA		 667 * Remove @mode from @connector's mode list, then free it.
668 */
669void drm_mode_remove(struct drm_connector *connector,
670 struct drm_display_mode *mode)
671{
672 list_del(&mode->head);
554f1d78 673 drm_mode_destroy(connector->dev, mode);
f453ba04
DA		 674}
675EXPORT_SYMBOL(drm_mode_remove);
676
677/**
678 * drm_connector_init - Init a preallocated connector
679 * @dev: DRM device
680 * @connector: the connector to init
681 * @funcs: callbacks for this connector
065a50ed 682 * @connector_type: user visible type of the connector
f453ba04 683 *
f453ba04
DA		 684 * Initialises a preallocated connector. Connectors should be
685 * subclassed as part of driver connector objects.
6bfc56aa
VS		 686 *
687 * RETURNS:
688 * Zero on success, error code on failure.
f453ba04 689 */
6bfc56aa
VS		 690int drm_connector_init(struct drm_device *dev,
691 struct drm_connector *connector,
692 const struct drm_connector_funcs *funcs,
693 int connector_type)
f453ba04 694{
6bfc56aa
VS		 695 int ret;
696
84849903 697 drm_modeset_lock_all(dev);
f453ba04 698
6bfc56aa
VS		 699 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
700 if (ret)
701 goto out;
702
7e3bdf4a 703 connector->base.properties = &connector->properties;
f453ba04
DA		 704 connector->dev = dev;
705 connector->funcs = funcs;
f453ba04
DA		 706 connector->connector_type = connector_type;
707 connector->connector_type_id =
708 ++drm_connector_enum_list[connector_type].count; /* TODO */
709 INIT_LIST_HEAD(&connector->user_modes);
710 INIT_LIST_HEAD(&connector->probed_modes);
711 INIT_LIST_HEAD(&connector->modes);
712 connector->edid_blob_ptr = NULL;
5e2cb2f6 713 connector->status = connector_status_unknown;
f453ba04
DA		 714
715 list_add_tail(&connector->head, &dev->mode_config.connector_list);
716 dev->mode_config.num_connector++;
717
a7331e5c 718 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 719 drm_object_attach_property(&connector->base,
a7331e5c
TH		 720 dev->mode_config.edid_property,
721 0);
f453ba04 722
58495563 723 drm_object_attach_property(&connector->base,
f453ba04
DA		 724 dev->mode_config.dpms_property, 0);
725
6bfc56aa 726 out:
84849903 727 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 728
729 return ret;
f453ba04
DA		 730}
731EXPORT_SYMBOL(drm_connector_init);
732
733/**
734 * drm_connector_cleanup - cleans up an initialised connector
735 * @connector: connector to cleanup
736 *
f453ba04
DA		 737 * Cleans up the connector but doesn't free the object.
738 */
739void drm_connector_cleanup(struct drm_connector *connector)
740{
741 struct drm_device *dev = connector->dev;
742 struct drm_display_mode *mode, *t;
743
744 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
745 drm_mode_remove(connector, mode);
746
747 list_for_each_entry_safe(mode, t, &connector->modes, head)
748 drm_mode_remove(connector, mode);
749
750 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
751 drm_mode_remove(connector, mode);
752
f453ba04
DA		 753 drm_mode_object_put(dev, &connector->base);
754 list_del(&connector->head);
6380c509 755 dev->mode_config.num_connector--;
f453ba04
DA		 756}
757EXPORT_SYMBOL(drm_connector_cleanup);
758
cbc7e221
DA		 759void drm_connector_unplug_all(struct drm_device *dev)
760{
761 struct drm_connector *connector;
762
763 /* taking the mode config mutex ends up in a clash with sysfs */
764 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
765 drm_sysfs_connector_remove(connector);
766
767}
768EXPORT_SYMBOL(drm_connector_unplug_all);
769
6bfc56aa 770int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 771 struct drm_encoder *encoder,
772 const struct drm_encoder_funcs *funcs,
773 int encoder_type)
f453ba04 774{
6bfc56aa
VS		 775 int ret;
776
84849903 777 drm_modeset_lock_all(dev);
f453ba04 778
6bfc56aa
VS		 779 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
780 if (ret)
781 goto out;
f453ba04 782
6bfc56aa 783 encoder->dev = dev;
f453ba04
DA		 784 encoder->encoder_type = encoder_type;
785 encoder->funcs = funcs;
786
787 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
788 dev->mode_config.num_encoder++;
789
6bfc56aa 790 out:
84849903 791 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 792
793 return ret;
f453ba04
DA		 794}
795EXPORT_SYMBOL(drm_encoder_init);
796
797void drm_encoder_cleanup(struct drm_encoder *encoder)
798{
799 struct drm_device *dev = encoder->dev;
84849903 800 drm_modeset_lock_all(dev);
f453ba04
DA		 801 drm_mode_object_put(dev, &encoder->base);
802 list_del(&encoder->head);
6380c509 803 dev->mode_config.num_encoder--;
84849903 804 drm_modeset_unlock_all(dev);
f453ba04
DA		 805}
806EXPORT_SYMBOL(drm_encoder_cleanup);
807
8cf5c917
JB		 808int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
809 unsigned long possible_crtcs,
810 const struct drm_plane_funcs *funcs,
0a7eb243
RC		 811 const uint32_t *formats, uint32_t format_count,
812 bool priv)
8cf5c917 813{
6bfc56aa
VS		 814 int ret;
815
84849903 816 drm_modeset_lock_all(dev);
8cf5c917 817
6bfc56aa
VS		 818 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
819 if (ret)
820 goto out;
821
4d93914a 822 plane->base.properties = &plane->properties;
8cf5c917 823 plane->dev = dev;
8cf5c917
JB		 824 plane->funcs = funcs;
825 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
826 GFP_KERNEL);
827 if (!plane->format_types) {
828 DRM_DEBUG_KMS("out of memory when allocating plane\n");
829 drm_mode_object_put(dev, &plane->base);
6bfc56aa
VS		 830 ret = -ENOMEM;
831 goto out;
8cf5c917
JB		 832 }
833
308e5bcb 834 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 835 plane->format_count = format_count;
836 plane->possible_crtcs = possible_crtcs;
837
0a7eb243
RC		 838 /* private planes are not exposed to userspace, but depending on
839 * display hardware, might be convenient to allow sharing programming
840 * for the scanout engine with the crtc implementation.
841 */
842 if (!priv) {
843 list_add_tail(&plane->head, &dev->mode_config.plane_list);
844 dev->mode_config.num_plane++;
845 } else {
846 INIT_LIST_HEAD(&plane->head);
847 }
8cf5c917 848
6bfc56aa 849 out:
84849903 850 drm_modeset_unlock_all(dev);
8cf5c917 851
6bfc56aa 852 return ret;
8cf5c917
JB		 853}
854EXPORT_SYMBOL(drm_plane_init);
855
856void drm_plane_cleanup(struct drm_plane *plane)
857{
858 struct drm_device *dev = plane->dev;
859
84849903 860 drm_modeset_lock_all(dev);
8cf5c917
JB		 861 kfree(plane->format_types);
862 drm_mode_object_put(dev, &plane->base);
0a7eb243
RC		 863 /* if not added to a list, it must be a private plane */
864 if (!list_empty(&plane->head)) {
865 list_del(&plane->head);
866 dev->mode_config.num_plane--;
867 }
84849903 868 drm_modeset_unlock_all(dev);
8cf5c917
JB		 869}
870EXPORT_SYMBOL(drm_plane_cleanup);
871
f453ba04
DA		 872/**
873 * drm_mode_create - create a new display mode
874 * @dev: DRM device
875 *
f453ba04
DA		 876 * Create a new drm_display_mode, give it an ID, and return it.
877 *
878 * RETURNS:
879 * Pointer to new mode on success, NULL on error.
880 */
881struct drm_display_mode *drm_mode_create(struct drm_device *dev)
882{
883 struct drm_display_mode *nmode;
884
885 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
886 if (!nmode)
887 return NULL;
888
6bfc56aa
VS		 889 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) {
890 kfree(nmode);
891 return NULL;
892 }
893
f453ba04
DA		 894 return nmode;
895}
896EXPORT_SYMBOL(drm_mode_create);
897
898/**
899 * drm_mode_destroy - remove a mode
900 * @dev: DRM device
901 * @mode: mode to remove
902 *
f453ba04
DA		 903 * Free @mode's unique identifier, then free it.
904 */
905void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
906{
ee34ab5b
VS		 907 if (!mode)
908 return;
909
f453ba04
DA		 910 drm_mode_object_put(dev, &mode->base);
911
912 kfree(mode);
913}
914EXPORT_SYMBOL(drm_mode_destroy);
915
916static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
917{
918 struct drm_property *edid;
919 struct drm_property *dpms;
f453ba04
DA		 920
921 /*
922 * Standard properties (apply to all connectors)
923 */
924 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
925 DRM_MODE_PROP_IMMUTABLE,
926 "EDID", 0);
927 dev->mode_config.edid_property = edid;
928
4a67d391
SH		 929 dpms = drm_property_create_enum(dev, 0,
930 "DPMS", drm_dpms_enum_list,
931 ARRAY_SIZE(drm_dpms_enum_list));
f453ba04
DA		 932 dev->mode_config.dpms_property = dpms;
933
934 return 0;
935}
936
937/**
938 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
939 * @dev: DRM device
940 *
941 * Called by a driver the first time a DVI-I connector is made.
942 */
943int drm_mode_create_dvi_i_properties(struct drm_device *dev)
944{
945 struct drm_property *dvi_i_selector;
946 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 947
948 if (dev->mode_config.dvi_i_select_subconnector_property)
949 return 0;
950
951 dvi_i_selector =
4a67d391 952 drm_property_create_enum(dev, 0,
f453ba04 953 "select subconnector",
4a67d391 954 drm_dvi_i_select_enum_list,
f453ba04 955 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 956 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
957
4a67d391 958 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 959 "subconnector",
4a67d391 960 drm_dvi_i_subconnector_enum_list,
f453ba04 961 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 962 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
963
964 return 0;
965}
966EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
967
968/**
969 * drm_create_tv_properties - create TV specific connector properties
970 * @dev: DRM device
971 * @num_modes: number of different TV formats (modes) supported
972 * @modes: array of pointers to strings containing name of each format
973 *
974 * Called by a driver's TV initialization routine, this function creates
975 * the TV specific connector properties for a given device. Caller is
976 * responsible for allocating a list of format names and passing them to
977 * this routine.
978 */
979int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
980 char *modes[])
981{
982 struct drm_property *tv_selector;
983 struct drm_property *tv_subconnector;
984 int i;
985
986 if (dev->mode_config.tv_select_subconnector_property)
987 return 0;
988
989 /*
990 * Basic connector properties
991 */
4a67d391 992 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 993 "select subconnector",
4a67d391 994 drm_tv_select_enum_list,
f453ba04 995 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 996 dev->mode_config.tv_select_subconnector_property = tv_selector;
997
998 tv_subconnector =
4a67d391
SH		 999 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1000 "subconnector",
1001 drm_tv_subconnector_enum_list,
f453ba04 1002 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1003 dev->mode_config.tv_subconnector_property = tv_subconnector;
1004
1005 /*
1006 * Other, TV specific properties: margins & TV modes.
1007 */
1008 dev->mode_config.tv_left_margin_property =
d9bc3c02 1009 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1010
1011 dev->mode_config.tv_right_margin_property =
d9bc3c02 1012 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1013
1014 dev->mode_config.tv_top_margin_property =
d9bc3c02 1015 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1016
1017 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1018 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1019
1020 dev->mode_config.tv_mode_property =
1021 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1022 "mode", num_modes);
1023 for (i = 0; i < num_modes; i++)
1024 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1025 i, modes[i]);
1026
b6b7902e 1027 dev->mode_config.tv_brightness_property =
d9bc3c02 1028 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1029
1030 dev->mode_config.tv_contrast_property =
d9bc3c02 1031 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1032
1033 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1034 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1035
a75f0236 1036 dev->mode_config.tv_overscan_property =
d9bc3c02 1037 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1038
1039 dev->mode_config.tv_saturation_property =
d9bc3c02 1040 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1041
1042 dev->mode_config.tv_hue_property =
d9bc3c02 1043 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1044
f453ba04
DA		 1045 return 0;
1046}
1047EXPORT_SYMBOL(drm_mode_create_tv_properties);
1048
1049/**
1050 * drm_mode_create_scaling_mode_property - create scaling mode property
1051 * @dev: DRM device
1052 *
1053 * Called by a driver the first time it's needed, must be attached to desired
1054 * connectors.
1055 */
1056int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1057{
1058 struct drm_property *scaling_mode;
f453ba04
DA		 1059
1060 if (dev->mode_config.scaling_mode_property)
1061 return 0;
1062
1063 scaling_mode =
4a67d391
SH		 1064 drm_property_create_enum(dev, 0, "scaling mode",
1065 drm_scaling_mode_enum_list,
f453ba04 1066 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1067
1068 dev->mode_config.scaling_mode_property = scaling_mode;
1069
1070 return 0;
1071}
1072EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1073
1074/**
1075 * drm_mode_create_dithering_property - create dithering property
1076 * @dev: DRM device
1077 *
1078 * Called by a driver the first time it's needed, must be attached to desired
1079 * connectors.
1080 */
1081int drm_mode_create_dithering_property(struct drm_device *dev)
1082{
1083 struct drm_property *dithering_mode;
f453ba04
DA		 1084
1085 if (dev->mode_config.dithering_mode_property)
1086 return 0;
1087
1088 dithering_mode =
4a67d391
SH		 1089 drm_property_create_enum(dev, 0, "dithering",
1090 drm_dithering_mode_enum_list,
f453ba04 1091 ARRAY_SIZE(drm_dithering_mode_enum_list));
f453ba04
DA		 1092 dev->mode_config.dithering_mode_property = dithering_mode;
1093
1094 return 0;
1095}
1096EXPORT_SYMBOL(drm_mode_create_dithering_property);
1097
884840aa
JB		 1098/**
1099 * drm_mode_create_dirty_property - create dirty property
1100 * @dev: DRM device
1101 *
1102 * Called by a driver the first time it's needed, must be attached to desired
1103 * connectors.
1104 */
1105int drm_mode_create_dirty_info_property(struct drm_device *dev)
1106{
1107 struct drm_property *dirty_info;
884840aa
JB		 1108
1109 if (dev->mode_config.dirty_info_property)
1110 return 0;
1111
1112 dirty_info =
4a67d391 1113 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1114 "dirty",
4a67d391 1115 drm_dirty_info_enum_list,
884840aa 1116 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1117 dev->mode_config.dirty_info_property = dirty_info;
1118
1119 return 0;
1120}
1121EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1122
f453ba04
DA		 1123/**
1124 * drm_mode_config_init - initialize DRM mode_configuration structure
1125 * @dev: DRM device
1126 *
f453ba04
DA		 1127 * Initialize @dev's mode_config structure, used for tracking the graphics
1128 * configuration of @dev.
8faf6b18
DV		 1129 *
1130 * Since this initializes the modeset locks, no locking is possible. Which is no
1131 * problem, since this should happen single threaded at init time. It is the
1132 * driver's problem to ensure this guarantee.
1133 *
f453ba04
DA		 1134 */
1135void drm_mode_config_init(struct drm_device *dev)
1136{
1137 mutex_init(&dev->mode_config.mutex);
ad2563c2 1138 mutex_init(&dev->mode_config.idr_mutex);
4b096ac1 1139 mutex_init(&dev->mode_config.fb_lock);
f453ba04 1140 INIT_LIST_HEAD(&dev->mode_config.fb_list);
f453ba04
DA		 1141 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
1142 INIT_LIST_HEAD(&dev->mode_config.connector_list);
1143 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
1144 INIT_LIST_HEAD(&dev->mode_config.property_list);
1145 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
8cf5c917 1146 INIT_LIST_HEAD(&dev->mode_config.plane_list);
f453ba04
DA		 1147 idr_init(&dev->mode_config.crtc_idr);
1148
84849903 1149 drm_modeset_lock_all(dev);
f453ba04 1150 drm_mode_create_standard_connector_properties(dev);
84849903 1151 drm_modeset_unlock_all(dev);
f453ba04
DA		 1152
1153 /* Just to be sure */
1154 dev->mode_config.num_fb = 0;
1155 dev->mode_config.num_connector = 0;
1156 dev->mode_config.num_crtc = 0;
1157 dev->mode_config.num_encoder = 0;
f453ba04
DA		 1158}
1159EXPORT_SYMBOL(drm_mode_config_init);
1160
1161int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1162{
1163 uint32_t total_objects = 0;
1164
1165 total_objects += dev->mode_config.num_crtc;
1166 total_objects += dev->mode_config.num_connector;
1167 total_objects += dev->mode_config.num_encoder;
1168
f453ba04
DA		 1169 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1170 if (!group->id_list)
1171 return -ENOMEM;
1172
1173 group->num_crtcs = 0;
1174 group->num_connectors = 0;
1175 group->num_encoders = 0;
1176 return 0;
1177}
1178
1179int drm_mode_group_init_legacy_group(struct drm_device *dev,
1180 struct drm_mode_group *group)
1181{
1182 struct drm_crtc *crtc;
1183 struct drm_encoder *encoder;
1184 struct drm_connector *connector;
1185 int ret;
1186
1187 if ((ret = drm_mode_group_init(dev, group)))
1188 return ret;
1189
1190 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1191 group->id_list[group->num_crtcs++] = crtc->base.id;
1192
1193 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1194 group->id_list[group->num_crtcs + group->num_encoders++] =
1195 encoder->base.id;
1196
1197 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1198 group->id_list[group->num_crtcs + group->num_encoders +
1199 group->num_connectors++] = connector->base.id;
1200
1201 return 0;
1202}
9c1dfc55 1203EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04
DA		 1204
1205/**
1206 * drm_mode_config_cleanup - free up DRM mode_config info
1207 * @dev: DRM device
1208 *
f453ba04
DA		 1209 * Free up all the connectors and CRTCs associated with this DRM device, then
1210 * free up the framebuffers and associated buffer objects.
1211 *
8faf6b18
DV		 1212 * Note that since this /should/ happen single-threaded at driver/device
1213 * teardown time, no locking is required. It's the driver's job to ensure that
1214 * this guarantee actually holds true.
1215 *
f453ba04
DA		 1216 * FIXME: cleanup any dangling user buffer objects too
1217 */
1218void drm_mode_config_cleanup(struct drm_device *dev)
1219{
1220 struct drm_connector *connector, *ot;
1221 struct drm_crtc *crtc, *ct;
1222 struct drm_encoder *encoder, *enct;
1223 struct drm_framebuffer *fb, *fbt;
1224 struct drm_property *property, *pt;
8cf5c917 1225 struct drm_plane *plane, *plt;
f453ba04
DA		 1226
1227 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
1228 head) {
1229 encoder->funcs->destroy(encoder);
1230 }
1231
1232 list_for_each_entry_safe(connector, ot,
1233 &dev->mode_config.connector_list, head) {
1234 connector->funcs->destroy(connector);
1235 }
1236
1237 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
1238 head) {
1239 drm_property_destroy(dev, property);
1240 }
1241
2b677e8c
DV		 1242 /*
1243 * Single-threaded teardown context, so it's not required to grab the
4b096ac1 1244 * fb_lock to protect against concurrent fb_list access. Contrary, it
2b677e8c
DV		 1245 * would actually deadlock with the drm_framebuffer_cleanup function.
1246 *
1247 * Also, if there are any framebuffers left, that's a driver leak now,
1248 * so politely WARN about this.
1249 */
1250 WARN_ON(!list_empty(&dev->mode_config.fb_list));
f453ba04 1251 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
f7eff60e 1252 drm_framebuffer_remove(fb);
f453ba04
DA		 1253 }
1254
8cf5c917
JB		 1255 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
1256 head) {
1257 plane->funcs->destroy(plane);
1258 }
59ce062e 1259
3184009c
CW		 1260 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
1261 crtc->funcs->destroy(crtc);
1262 }
1263
59ce062e 1264 idr_destroy(&dev->mode_config.crtc_idr);
f453ba04
DA		 1265}
1266EXPORT_SYMBOL(drm_mode_config_cleanup);
1267
f453ba04
DA		 1268/**
1269 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1270 * @out: drm_mode_modeinfo struct to return to the user
1271 * @in: drm_display_mode to use
1272 *
f453ba04
DA		 1273 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1274 * the user.
1275 */
93bbf6db
VS		 1276static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1277 const struct drm_display_mode *in)
f453ba04 1278{
e36fae38
VS		 1279 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1280 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1281 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1282 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1283 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1284 "timing values too large for mode info\n");
1285
f453ba04
DA		 1286 out->clock = in->clock;
1287 out->hdisplay = in->hdisplay;
1288 out->hsync_start = in->hsync_start;
1289 out->hsync_end = in->hsync_end;
1290 out->htotal = in->htotal;
1291 out->hskew = in->hskew;
1292 out->vdisplay = in->vdisplay;
1293 out->vsync_start = in->vsync_start;
1294 out->vsync_end = in->vsync_end;
1295 out->vtotal = in->vtotal;
1296 out->vscan = in->vscan;
1297 out->vrefresh = in->vrefresh;
1298 out->flags = in->flags;
1299 out->type = in->type;
1300 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1301 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1302}
1303
1304/**
1305 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1306 * @out: drm_display_mode to return to the user
1307 * @in: drm_mode_modeinfo to use
1308 *
f453ba04
DA		 1309 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1310 * the caller.
90367bf6
VS		 1311 *
1312 * RETURNS:
1313 * Zero on success, errno on failure.
f453ba04 1314 */
93bbf6db
VS		 1315static int drm_crtc_convert_umode(struct drm_display_mode *out,
1316 const struct drm_mode_modeinfo *in)
f453ba04 1317{
90367bf6
VS		 1318 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1319 return -ERANGE;
1320
f453ba04
DA		 1321 out->clock = in->clock;
1322 out->hdisplay = in->hdisplay;
1323 out->hsync_start = in->hsync_start;
1324 out->hsync_end = in->hsync_end;
1325 out->htotal = in->htotal;
1326 out->hskew = in->hskew;
1327 out->vdisplay = in->vdisplay;
1328 out->vsync_start = in->vsync_start;
1329 out->vsync_end = in->vsync_end;
1330 out->vtotal = in->vtotal;
1331 out->vscan = in->vscan;
1332 out->vrefresh = in->vrefresh;
1333 out->flags = in->flags;
1334 out->type = in->type;
1335 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1336 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1337
1338 return 0;
f453ba04
DA		 1339}
1340
1341/**
1342 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1343 * @dev: drm device for the ioctl
1344 * @data: data pointer for the ioctl
1345 * @file_priv: drm file for the ioctl call
f453ba04 1346 *
f453ba04
DA		 1347 * Construct a set of configuration description structures and return
1348 * them to the user, including CRTC, connector and framebuffer configuration.
1349 *
1350 * Called by the user via ioctl.
1351 *
1352 * RETURNS:
1353 * Zero on success, errno on failure.
1354 */
1355int drm_mode_getresources(struct drm_device *dev, void *data,
1356 struct drm_file *file_priv)
1357{
1358 struct drm_mode_card_res *card_res = data;
1359 struct list_head *lh;
1360 struct drm_framebuffer *fb;
1361 struct drm_connector *connector;
1362 struct drm_crtc *crtc;
1363 struct drm_encoder *encoder;
1364 int ret = 0;
1365 int connector_count = 0;
1366 int crtc_count = 0;
1367 int fb_count = 0;
1368 int encoder_count = 0;
1369 int copied = 0, i;
1370 uint32_t __user *fb_id;
1371 uint32_t __user *crtc_id;
1372 uint32_t __user *connector_id;
1373 uint32_t __user *encoder_id;
1374 struct drm_mode_group *mode_group;
1375
fb3b06c8
DA		 1376 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1377 return -EINVAL;
1378
f453ba04 1379
4b096ac1 1380 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1381 /*
1382 * For the non-control nodes we need to limit the list of resources
1383 * by IDs in the group list for this node
1384 */
1385 list_for_each(lh, &file_priv->fbs)
1386 fb_count++;
1387
4b096ac1
DV		 1388 /* handle this in 4 parts */
1389 /* FBs */
1390 if (card_res->count_fbs >= fb_count) {
1391 copied = 0;
1392 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1393 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1394 if (put_user(fb->base.id, fb_id + copied)) {
1395 mutex_unlock(&file_priv->fbs_lock);
1396 return -EFAULT;
1397 }
1398 copied++;
1399 }
1400 }
1401 card_res->count_fbs = fb_count;
1402 mutex_unlock(&file_priv->fbs_lock);
1403
1404 drm_modeset_lock_all(dev);
f453ba04
DA		 1405 mode_group = &file_priv->master->minor->mode_group;
1406 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1407
1408 list_for_each(lh, &dev->mode_config.crtc_list)
1409 crtc_count++;
1410
1411 list_for_each(lh, &dev->mode_config.connector_list)
1412 connector_count++;
1413
1414 list_for_each(lh, &dev->mode_config.encoder_list)
1415 encoder_count++;
1416 } else {
1417
1418 crtc_count = mode_group->num_crtcs;
1419 connector_count = mode_group->num_connectors;
1420 encoder_count = mode_group->num_encoders;
1421 }
1422
1423 card_res->max_height = dev->mode_config.max_height;
1424 card_res->min_height = dev->mode_config.min_height;
1425 card_res->max_width = dev->mode_config.max_width;
1426 card_res->min_width = dev->mode_config.min_width;
1427
f453ba04
DA		 1428 /* CRTCs */
1429 if (card_res->count_crtcs >= crtc_count) {
1430 copied = 0;
1431 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1432 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1433 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1434 head) {
9440106b 1435 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1436 if (put_user(crtc->base.id, crtc_id + copied)) {
1437 ret = -EFAULT;
1438 goto out;
1439 }
1440 copied++;
1441 }
1442 } else {
1443 for (i = 0; i < mode_group->num_crtcs; i++) {
1444 if (put_user(mode_group->id_list[i],
1445 crtc_id + copied)) {
1446 ret = -EFAULT;
1447 goto out;
1448 }
1449 copied++;
1450 }
1451 }
1452 }
1453 card_res->count_crtcs = crtc_count;
1454
1455 /* Encoders */
1456 if (card_res->count_encoders >= encoder_count) {
1457 copied = 0;
1458 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1459 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1460 list_for_each_entry(encoder,
1461 &dev->mode_config.encoder_list,
1462 head) {
9440106b
JG		 1463 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1464 drm_get_encoder_name(encoder));
f453ba04
DA		 1465 if (put_user(encoder->base.id, encoder_id +
1466 copied)) {
1467 ret = -EFAULT;
1468 goto out;
1469 }
1470 copied++;
1471 }
1472 } else {
1473 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1474 if (put_user(mode_group->id_list[i],
1475 encoder_id + copied)) {
1476 ret = -EFAULT;
1477 goto out;
1478 }
1479 copied++;
1480 }
1481
1482 }
1483 }
1484 card_res->count_encoders = encoder_count;
1485
1486 /* Connectors */
1487 if (card_res->count_connectors >= connector_count) {
1488 copied = 0;
1489 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1490 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1491 list_for_each_entry(connector,
1492 &dev->mode_config.connector_list,
1493 head) {
9440106b
JG		 1494 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1495 connector->base.id,
1496 drm_get_connector_name(connector));
f453ba04
DA		 1497 if (put_user(connector->base.id,
1498 connector_id + copied)) {
1499 ret = -EFAULT;
1500 goto out;
1501 }
1502 copied++;
1503 }
1504 } else {
1505 int start = mode_group->num_crtcs +
1506 mode_group->num_encoders;
1507 for (i = start; i < start + mode_group->num_connectors; i++) {
1508 if (put_user(mode_group->id_list[i],
1509 connector_id + copied)) {
1510 ret = -EFAULT;
1511 goto out;
1512 }
1513 copied++;
1514 }
1515 }
1516 }
1517 card_res->count_connectors = connector_count;
1518
9440106b 1519 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1520 card_res->count_connectors, card_res->count_encoders);
1521
1522out:
84849903 1523 drm_modeset_unlock_all(dev);
f453ba04
DA		 1524 return ret;
1525}
1526
1527/**
1528 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1529 * @dev: drm device for the ioctl
1530 * @data: data pointer for the ioctl
1531 * @file_priv: drm file for the ioctl call
f453ba04 1532 *
f453ba04
DA		 1533 * Construct a CRTC configuration structure to return to the user.
1534 *
1535 * Called by the user via ioctl.
1536 *
1537 * RETURNS:
1538 * Zero on success, errno on failure.
1539 */
1540int drm_mode_getcrtc(struct drm_device *dev,
1541 void *data, struct drm_file *file_priv)
1542{
1543 struct drm_mode_crtc *crtc_resp = data;
1544 struct drm_crtc *crtc;
1545 struct drm_mode_object *obj;
1546 int ret = 0;
1547
fb3b06c8
DA		 1548 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1549 return -EINVAL;
1550
84849903 1551 drm_modeset_lock_all(dev);
f453ba04
DA		 1552
1553 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1554 DRM_MODE_OBJECT_CRTC);
1555 if (!obj) {
1556 ret = -EINVAL;
1557 goto out;
1558 }
1559 crtc = obj_to_crtc(obj);
1560
1561 crtc_resp->x = crtc->x;
1562 crtc_resp->y = crtc->y;
1563 crtc_resp->gamma_size = crtc->gamma_size;
1564 if (crtc->fb)
1565 crtc_resp->fb_id = crtc->fb->base.id;
1566 else
1567 crtc_resp->fb_id = 0;
1568
1569 if (crtc->enabled) {
1570
1571 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1572 crtc_resp->mode_valid = 1;
1573
1574 } else {
1575 crtc_resp->mode_valid = 0;
1576 }
1577
1578out:
84849903 1579 drm_modeset_unlock_all(dev);
f453ba04
DA		 1580 return ret;
1581}
1582
1583/**
1584 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 1585 * @dev: drm device for the ioctl
1586 * @data: data pointer for the ioctl
1587 * @file_priv: drm file for the ioctl call
f453ba04 1588 *
f453ba04
DA		 1589 * Construct a connector configuration structure to return to the user.
1590 *
1591 * Called by the user via ioctl.
1592 *
1593 * RETURNS:
1594 * Zero on success, errno on failure.
1595 */
1596int drm_mode_getconnector(struct drm_device *dev, void *data,
1597 struct drm_file *file_priv)
1598{
1599 struct drm_mode_get_connector *out_resp = data;
1600 struct drm_mode_object *obj;
1601 struct drm_connector *connector;
1602 struct drm_display_mode *mode;
1603 int mode_count = 0;
1604 int props_count = 0;
1605 int encoders_count = 0;
1606 int ret = 0;
1607 int copied = 0;
1608 int i;
1609 struct drm_mode_modeinfo u_mode;
1610 struct drm_mode_modeinfo __user *mode_ptr;
1611 uint32_t __user *prop_ptr;
1612 uint64_t __user *prop_values;
1613 uint32_t __user *encoder_ptr;
1614
fb3b06c8
DA		 1615 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1616 return -EINVAL;
1617
f453ba04
DA		 1618 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1619
9440106b 1620 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 1621
7b24056b 1622 mutex_lock(&dev->mode_config.mutex);
f453ba04
DA		 1623
1624 obj = drm_mode_object_find(dev, out_resp->connector_id,
1625 DRM_MODE_OBJECT_CONNECTOR);
1626 if (!obj) {
1627 ret = -EINVAL;
1628 goto out;
1629 }
1630 connector = obj_to_connector(obj);
1631
7f88a9be 1632 props_count = connector->properties.count;
f453ba04
DA		 1633
1634 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1635 if (connector->encoder_ids[i] != 0) {
1636 encoders_count++;
1637 }
1638 }
1639
1640 if (out_resp->count_modes == 0) {
1641 connector->funcs->fill_modes(connector,
1642 dev->mode_config.max_width,
1643 dev->mode_config.max_height);
1644 }
1645
1646 /* delayed so we get modes regardless of pre-fill_modes state */
1647 list_for_each_entry(mode, &connector->modes, head)
1648 mode_count++;
1649
1650 out_resp->connector_id = connector->base.id;
1651 out_resp->connector_type = connector->connector_type;
1652 out_resp->connector_type_id = connector->connector_type_id;
1653 out_resp->mm_width = connector->display_info.width_mm;
1654 out_resp->mm_height = connector->display_info.height_mm;
1655 out_resp->subpixel = connector->display_info.subpixel_order;
1656 out_resp->connection = connector->status;
1657 if (connector->encoder)
1658 out_resp->encoder_id = connector->encoder->base.id;
1659 else
1660 out_resp->encoder_id = 0;
1661
1662 /*
1663 * This ioctl is called twice, once to determine how much space is
1664 * needed, and the 2nd time to fill it.
1665 */
1666 if ((out_resp->count_modes >= mode_count) && mode_count) {
1667 copied = 0;
81f6c7f8 1668 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04
DA		 1669 list_for_each_entry(mode, &connector->modes, head) {
1670 drm_crtc_convert_to_umode(&u_mode, mode);
1671 if (copy_to_user(mode_ptr + copied,
1672 &u_mode, sizeof(u_mode))) {
1673 ret = -EFAULT;
1674 goto out;
1675 }
1676 copied++;
1677 }
1678 }
1679 out_resp->count_modes = mode_count;
1680
1681 if ((out_resp->count_props >= props_count) && props_count) {
1682 copied = 0;
81f6c7f8
VS		 1683 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1684 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
7f88a9be
PZ		 1685 for (i = 0; i < connector->properties.count; i++) {
1686 if (put_user(connector->properties.ids[i],
1687 prop_ptr + copied)) {
1688 ret = -EFAULT;
1689 goto out;
1690 }
f453ba04 1691
7f88a9be
PZ		 1692 if (put_user(connector->properties.values[i],
1693 prop_values + copied)) {
1694 ret = -EFAULT;
1695 goto out;
f453ba04 1696 }
7f88a9be 1697 copied++;
f453ba04
DA		 1698 }
1699 }
1700 out_resp->count_props = props_count;
1701
1702 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1703 copied = 0;
81f6c7f8 1704 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 1705 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1706 if (connector->encoder_ids[i] != 0) {
1707 if (put_user(connector->encoder_ids[i],
1708 encoder_ptr + copied)) {
1709 ret = -EFAULT;
1710 goto out;
1711 }
1712 copied++;
1713 }
1714 }
1715 }
1716 out_resp->count_encoders = encoders_count;
1717
1718out:
7b24056b
DV		 1719 mutex_unlock(&dev->mode_config.mutex);
1720
f453ba04
DA		 1721 return ret;
1722}
1723
1724int drm_mode_getencoder(struct drm_device *dev, void *data,
1725 struct drm_file *file_priv)
1726{
1727 struct drm_mode_get_encoder *enc_resp = data;
1728 struct drm_mode_object *obj;
1729 struct drm_encoder *encoder;
1730 int ret = 0;
1731
fb3b06c8
DA		 1732 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1733 return -EINVAL;
1734
84849903 1735 drm_modeset_lock_all(dev);
f453ba04
DA		 1736 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1737 DRM_MODE_OBJECT_ENCODER);
1738 if (!obj) {
1739 ret = -EINVAL;
1740 goto out;
1741 }
1742 encoder = obj_to_encoder(obj);
1743
1744 if (encoder->crtc)
1745 enc_resp->crtc_id = encoder->crtc->base.id;
1746 else
1747 enc_resp->crtc_id = 0;
1748 enc_resp->encoder_type = encoder->encoder_type;
1749 enc_resp->encoder_id = encoder->base.id;
1750 enc_resp->possible_crtcs = encoder->possible_crtcs;
1751 enc_resp->possible_clones = encoder->possible_clones;
1752
1753out:
84849903 1754 drm_modeset_unlock_all(dev);
f453ba04
DA		 1755 return ret;
1756}
1757
8cf5c917
JB		 1758/**
1759 * drm_mode_getplane_res - get plane info
1760 * @dev: DRM device
1761 * @data: ioctl data
1762 * @file_priv: DRM file info
1763 *
1764 * Return an plane count and set of IDs.
1765 */
1766int drm_mode_getplane_res(struct drm_device *dev, void *data,
1767 struct drm_file *file_priv)
1768{
1769 struct drm_mode_get_plane_res *plane_resp = data;
1770 struct drm_mode_config *config;
1771 struct drm_plane *plane;
1772 uint32_t __user *plane_ptr;
1773 int copied = 0, ret = 0;
1774
1775 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1776 return -EINVAL;
1777
84849903 1778 drm_modeset_lock_all(dev);
8cf5c917
JB		 1779 config = &dev->mode_config;
1780
1781 /*
1782 * This ioctl is called twice, once to determine how much space is
1783 * needed, and the 2nd time to fill it.
1784 */
1785 if (config->num_plane &&
1786 (plane_resp->count_planes >= config->num_plane)) {
81f6c7f8 1787 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917
JB		 1788
1789 list_for_each_entry(plane, &config->plane_list, head) {
1790 if (put_user(plane->base.id, plane_ptr + copied)) {
1791 ret = -EFAULT;
1792 goto out;
1793 }
1794 copied++;
1795 }
1796 }
1797 plane_resp->count_planes = config->num_plane;
1798
1799out:
84849903 1800 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1801 return ret;
1802}
1803
1804/**
1805 * drm_mode_getplane - get plane info
1806 * @dev: DRM device
1807 * @data: ioctl data
1808 * @file_priv: DRM file info
1809 *
1810 * Return plane info, including formats supported, gamma size, any
1811 * current fb, etc.
1812 */
1813int drm_mode_getplane(struct drm_device *dev, void *data,
1814 struct drm_file *file_priv)
1815{
1816 struct drm_mode_get_plane *plane_resp = data;
1817 struct drm_mode_object *obj;
1818 struct drm_plane *plane;
1819 uint32_t __user *format_ptr;
1820 int ret = 0;
1821
1822 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1823 return -EINVAL;
1824
84849903 1825 drm_modeset_lock_all(dev);
8cf5c917
JB		 1826 obj = drm_mode_object_find(dev, plane_resp->plane_id,
1827 DRM_MODE_OBJECT_PLANE);
1828 if (!obj) {
1829 ret = -ENOENT;
1830 goto out;
1831 }
1832 plane = obj_to_plane(obj);
1833
1834 if (plane->crtc)
1835 plane_resp->crtc_id = plane->crtc->base.id;
1836 else
1837 plane_resp->crtc_id = 0;
1838
1839 if (plane->fb)
1840 plane_resp->fb_id = plane->fb->base.id;
1841 else
1842 plane_resp->fb_id = 0;
1843
1844 plane_resp->plane_id = plane->base.id;
1845 plane_resp->possible_crtcs = plane->possible_crtcs;
1846 plane_resp->gamma_size = plane->gamma_size;
1847
1848 /*
1849 * This ioctl is called twice, once to determine how much space is
1850 * needed, and the 2nd time to fill it.
1851 */
1852 if (plane->format_count &&
1853 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 1854 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 1855 if (copy_to_user(format_ptr,
1856 plane->format_types,
1857 sizeof(uint32_t) * plane->format_count)) {
1858 ret = -EFAULT;
1859 goto out;
1860 }
1861 }
1862 plane_resp->count_format_types = plane->format_count;
1863
1864out:
84849903 1865 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1866 return ret;
1867}
1868
1869/**
1870 * drm_mode_setplane - set up or tear down an plane
1871 * @dev: DRM device
1872 * @data: ioctl data*
065a50ed 1873 * @file_priv: DRM file info
8cf5c917
JB		 1874 *
1875 * Set plane info, including placement, fb, scaling, and other factors.
1876 * Or pass a NULL fb to disable.
1877 */
1878int drm_mode_setplane(struct drm_device *dev, void *data,
1879 struct drm_file *file_priv)
1880{
1881 struct drm_mode_set_plane *plane_req = data;
1882 struct drm_mode_object *obj;
1883 struct drm_plane *plane;
1884 struct drm_crtc *crtc;
6c2a7532 1885 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
8cf5c917 1886 int ret = 0;
42ef8789 1887 unsigned int fb_width, fb_height;
62443be6 1888 int i;
8cf5c917
JB		 1889
1890 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1891 return -EINVAL;
1892
8cf5c917
JB		 1893 /*
1894 * First, find the plane, crtc, and fb objects. If not available,
1895 * we don't bother to call the driver.
1896 */
1897 obj = drm_mode_object_find(dev, plane_req->plane_id,
1898 DRM_MODE_OBJECT_PLANE);
1899 if (!obj) {
1900 DRM_DEBUG_KMS("Unknown plane ID %d\n",
1901 plane_req->plane_id);
6c2a7532 1902 return -ENOENT;
8cf5c917
JB		 1903 }
1904 plane = obj_to_plane(obj);
1905
1906 /* No fb means shut it down */
1907 if (!plane_req->fb_id) {
6c2a7532
DV		 1908 drm_modeset_lock_all(dev);
1909 old_fb = plane->fb;
8cf5c917 1910 plane->funcs->disable_plane(plane);
e5e3b44c
VS		 1911 plane->crtc = NULL;
1912 plane->fb = NULL;
6c2a7532 1913 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1914 goto out;
1915 }
1916
1917 obj = drm_mode_object_find(dev, plane_req->crtc_id,
1918 DRM_MODE_OBJECT_CRTC);
1919 if (!obj) {
1920 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
1921 plane_req->crtc_id);
1922 ret = -ENOENT;
1923 goto out;
1924 }
1925 crtc = obj_to_crtc(obj);
1926
786b99ed
DV		 1927 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
1928 if (!fb) {
8cf5c917
JB		 1929 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
1930 plane_req->fb_id);
1931 ret = -ENOENT;
1932 goto out;
1933 }
8cf5c917 1934
62443be6
VS		 1935 /* Check whether this plane supports the fb pixel format. */
1936 for (i = 0; i < plane->format_count; i++)
1937 if (fb->pixel_format == plane->format_types[i])
1938 break;
1939 if (i == plane->format_count) {
1940 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
1941 ret = -EINVAL;
1942 goto out;
1943 }
1944
42ef8789
VS		 1945 fb_width = fb->width << 16;
1946 fb_height = fb->height << 16;
1947
1948 /* Make sure source coordinates are inside the fb. */
1949 if (plane_req->src_w > fb_width ||
1950 plane_req->src_x > fb_width - plane_req->src_w ||
1951 plane_req->src_h > fb_height ||
1952 plane_req->src_y > fb_height - plane_req->src_h) {
1953 DRM_DEBUG_KMS("Invalid source coordinates "
1954 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
1955 plane_req->src_w >> 16,
1956 ((plane_req->src_w & 0xffff) * 15625) >> 10,
1957 plane_req->src_h >> 16,
1958 ((plane_req->src_h & 0xffff) * 15625) >> 10,
1959 plane_req->src_x >> 16,
1960 ((plane_req->src_x & 0xffff) * 15625) >> 10,
1961 plane_req->src_y >> 16,
1962 ((plane_req->src_y & 0xffff) * 15625) >> 10);
1963 ret = -ENOSPC;
1964 goto out;
1965 }
1966
687a0400
VS		 1967 /* Give drivers some help against integer overflows */
1968 if (plane_req->crtc_w > INT_MAX ||
1969 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
1970 plane_req->crtc_h > INT_MAX ||
1971 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
1972 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
1973 plane_req->crtc_w, plane_req->crtc_h,
1974 plane_req->crtc_x, plane_req->crtc_y);
1975 ret = -ERANGE;
1976 goto out;
1977 }
1978
6c2a7532 1979 drm_modeset_lock_all(dev);
8cf5c917
JB		 1980 ret = plane->funcs->update_plane(plane, crtc, fb,
1981 plane_req->crtc_x, plane_req->crtc_y,
1982 plane_req->crtc_w, plane_req->crtc_h,
1983 plane_req->src_x, plane_req->src_y,
1984 plane_req->src_w, plane_req->src_h);
1985 if (!ret) {
6c2a7532 1986 old_fb = plane->fb;
8cf5c917
JB		 1987 plane->crtc = crtc;
1988 plane->fb = fb;
35f8badc 1989 fb = NULL;
8cf5c917 1990 }
6c2a7532 1991 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1992
1993out:
6c2a7532
DV		 1994 if (fb)
1995 drm_framebuffer_unreference(fb);
1996 if (old_fb)
1997 drm_framebuffer_unreference(old_fb);
8cf5c917
JB		 1998
1999 return ret;
2000}
2001
2d13b679
DV		 2002/**
2003 * drm_mode_set_config_internal - helper to call ->set_config
2004 * @set: modeset config to set
2005 *
2006 * This is a little helper to wrap internal calls to the ->set_config driver
2007 * interface. The only thing it adds is correct refcounting dance.
2008 */
2009int drm_mode_set_config_internal(struct drm_mode_set *set)
2010{
2011 struct drm_crtc *crtc = set->crtc;
b0d12325
DV		 2012 struct drm_framebuffer *fb, *old_fb;
2013 int ret;
2014
2015 old_fb = crtc->fb;
2016 fb = set->fb;
2d13b679 2017
b0d12325
DV		 2018 ret = crtc->funcs->set_config(set);
2019 if (ret == 0) {
2020 if (old_fb)
2021 drm_framebuffer_unreference(old_fb);
2022 if (fb)
2023 drm_framebuffer_reference(fb);
2024 }
2025
2026 return ret;
2d13b679
DV		 2027}
2028EXPORT_SYMBOL(drm_mode_set_config_internal);
2029
f453ba04
DA		 2030/**
2031 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2032 * @dev: drm device for the ioctl
2033 * @data: data pointer for the ioctl
2034 * @file_priv: drm file for the ioctl call
f453ba04 2035 *
f453ba04
DA		 2036 * Build a new CRTC configuration based on user request.
2037 *
2038 * Called by the user via ioctl.
2039 *
2040 * RETURNS:
2041 * Zero on success, errno on failure.
2042 */
2043int drm_mode_setcrtc(struct drm_device *dev, void *data,
2044 struct drm_file *file_priv)
2045{
2046 struct drm_mode_config *config = &dev->mode_config;
2047 struct drm_mode_crtc *crtc_req = data;
2048 struct drm_mode_object *obj;
6653cc8d 2049 struct drm_crtc *crtc;
f453ba04
DA		 2050 struct drm_connector **connector_set = NULL, *connector;
2051 struct drm_framebuffer *fb = NULL;
2052 struct drm_display_mode *mode = NULL;
2053 struct drm_mode_set set;
2054 uint32_t __user *set_connectors_ptr;
4a1b0714 2055 int ret;
f453ba04
DA		 2056 int i;
2057
fb3b06c8
DA		 2058 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2059 return -EINVAL;
2060
1d97e915
VS		 2061 /* For some reason crtc x/y offsets are signed internally. */
2062 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2063 return -ERANGE;
2064
84849903 2065 drm_modeset_lock_all(dev);
f453ba04
DA		 2066 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
2067 DRM_MODE_OBJECT_CRTC);
2068 if (!obj) {
58367ed6 2069 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f453ba04
DA		 2070 ret = -EINVAL;
2071 goto out;
2072 }
2073 crtc = obj_to_crtc(obj);
9440106b 2074 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2075
2076 if (crtc_req->mode_valid) {
7c80e128 2077 int hdisplay, vdisplay;
f453ba04
DA		 2078 /* If we have a mode we need a framebuffer. */
2079 /* If we pass -1, set the mode with the currently bound fb */
2080 if (crtc_req->fb_id == -1) {
6653cc8d
VS		 2081 if (!crtc->fb) {
2082 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2083 ret = -EINVAL;
2084 goto out;
f453ba04 2085 }
6653cc8d 2086 fb = crtc->fb;
b0d12325
DV		 2087 /* Make refcounting symmetric with the lookup path. */
2088 drm_framebuffer_reference(fb);
f453ba04 2089 } else {
786b99ed
DV		 2090 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2091 if (!fb) {
58367ed6
ZY		 2092 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2093 crtc_req->fb_id);
f453ba04
DA		 2094 ret = -EINVAL;
2095 goto out;
2096 }
f453ba04
DA		 2097 }
2098
2099 mode = drm_mode_create(dev);
ee34ab5b
VS		 2100 if (!mode) {
2101 ret = -ENOMEM;
2102 goto out;
2103 }
2104
90367bf6
VS		 2105 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2106 if (ret) {
2107 DRM_DEBUG_KMS("Invalid mode\n");
2108 goto out;
2109 }
2110
f453ba04 2111 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2112
7c80e128
RC		 2113 hdisplay = mode->hdisplay;
2114 vdisplay = mode->vdisplay;
2115
2116 if (crtc->invert_dimensions)
2117 swap(hdisplay, vdisplay);
2118
2119 if (hdisplay > fb->width ||
2120 vdisplay > fb->height ||
2121 crtc_req->x > fb->width - hdisplay ||
2122 crtc_req->y > fb->height - vdisplay) {
2123 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2124 fb->width, fb->height,
2125 hdisplay, vdisplay, crtc_req->x, crtc_req->y,
2126 crtc->invert_dimensions ? " (inverted)" : "");
5f61bb42
VS		 2127 ret = -ENOSPC;
2128 goto out;
2129 }
f453ba04
DA		 2130 }
2131
2132 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2133 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2134 ret = -EINVAL;
2135 goto out;
2136 }
2137
7781de74 2138 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2139 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2140 crtc_req->count_connectors);
2141 ret = -EINVAL;
2142 goto out;
2143 }
2144
2145 if (crtc_req->count_connectors > 0) {
2146 u32 out_id;
2147
2148 /* Avoid unbounded kernel memory allocation */
2149 if (crtc_req->count_connectors > config->num_connector) {
2150 ret = -EINVAL;
2151 goto out;
2152 }
2153
2154 connector_set = kmalloc(crtc_req->count_connectors *
2155 sizeof(struct drm_connector *),
2156 GFP_KERNEL);
2157 if (!connector_set) {
2158 ret = -ENOMEM;
2159 goto out;
2160 }
2161
2162 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2163 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2164 if (get_user(out_id, &set_connectors_ptr[i])) {
2165 ret = -EFAULT;
2166 goto out;
2167 }
2168
2169 obj = drm_mode_object_find(dev, out_id,
2170 DRM_MODE_OBJECT_CONNECTOR);
2171 if (!obj) {
58367ed6
ZY		 2172 DRM_DEBUG_KMS("Connector id %d unknown\n",
2173 out_id);
f453ba04
DA		 2174 ret = -EINVAL;
2175 goto out;
2176 }
2177 connector = obj_to_connector(obj);
9440106b
JG		 2178 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2179 connector->base.id,
2180 drm_get_connector_name(connector));
f453ba04
DA		 2181
2182 connector_set[i] = connector;
2183 }
2184 }
2185
2186 set.crtc = crtc;
2187 set.x = crtc_req->x;
2188 set.y = crtc_req->y;
2189 set.mode = mode;
2190 set.connectors = connector_set;
2191 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2192 set.fb = fb;
2d13b679 2193 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2194
2195out:
b0d12325
DV		 2196 if (fb)
2197 drm_framebuffer_unreference(fb);
2198
f453ba04 2199 kfree(connector_set);
ee34ab5b 2200 drm_mode_destroy(dev, mode);
84849903 2201 drm_modeset_unlock_all(dev);
f453ba04
DA		 2202 return ret;
2203}
2204
2205int drm_mode_cursor_ioctl(struct drm_device *dev,
2206 void *data, struct drm_file *file_priv)
2207{
2208 struct drm_mode_cursor *req = data;
2209 struct drm_mode_object *obj;
2210 struct drm_crtc *crtc;
2211 int ret = 0;
2212
fb3b06c8
DA		 2213 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2214 return -EINVAL;
2215
7c4eaca4 2216 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2217 return -EINVAL;
f453ba04 2218
e0c8463a 2219 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
f453ba04 2220 if (!obj) {
58367ed6 2221 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
dac35663 2222 return -EINVAL;
f453ba04
DA		 2223 }
2224 crtc = obj_to_crtc(obj);
2225
dac35663 2226 mutex_lock(&crtc->mutex);
f453ba04
DA		 2227 if (req->flags & DRM_MODE_CURSOR_BO) {
2228 if (!crtc->funcs->cursor_set) {
f453ba04
DA		 2229 ret = -ENXIO;
2230 goto out;
2231 }
2232 /* Turns off the cursor if handle is 0 */
2233 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2234 req->width, req->height);
2235 }
2236
2237 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2238 if (crtc->funcs->cursor_move) {
2239 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2240 } else {
f453ba04
DA		 2241 ret = -EFAULT;
2242 goto out;
2243 }
2244 }
2245out:
dac35663
DV		 2246 mutex_unlock(&crtc->mutex);
2247
f453ba04
DA		 2248 return ret;
2249}
2250
308e5bcb
JB		 2251/* Original addfb only supported RGB formats, so figure out which one */
2252uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2253{
2254 uint32_t fmt;
2255
2256 switch (bpp) {
2257 case 8:
d84f031b 2258 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 2259 break;
2260 case 16:
2261 if (depth == 15)
04b3924d 2262 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 2263 else
04b3924d 2264 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 2265 break;
2266 case 24:
04b3924d 2267 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 2268 break;
2269 case 32:
2270 if (depth == 24)
04b3924d 2271 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 2272 else if (depth == 30)
04b3924d 2273 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 2274 else
04b3924d 2275 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 2276 break;
2277 default:
04b3924d
VS		 2278 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2279 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 2280 break;
2281 }
2282
2283 return fmt;
2284}
2285EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2286
f453ba04
DA		 2287/**
2288 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 2289 * @dev: drm device for the ioctl
2290 * @data: data pointer for the ioctl
2291 * @file_priv: drm file for the ioctl call
f453ba04 2292 *
f453ba04
DA		 2293 * Add a new FB to the specified CRTC, given a user request.
2294 *
2295 * Called by the user via ioctl.
2296 *
2297 * RETURNS:
2298 * Zero on success, errno on failure.
2299 */
2300int drm_mode_addfb(struct drm_device *dev,
2301 void *data, struct drm_file *file_priv)
2302{
308e5bcb
JB		 2303 struct drm_mode_fb_cmd *or = data;
2304 struct drm_mode_fb_cmd2 r = {};
2305 struct drm_mode_config *config = &dev->mode_config;
2306 struct drm_framebuffer *fb;
2307 int ret = 0;
2308
2309 /* Use new struct with format internally */
2310 r.fb_id = or->fb_id;
2311 r.width = or->width;
2312 r.height = or->height;
2313 r.pitches[0] = or->pitch;
2314 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2315 r.handles[0] = or->handle;
2316
2317 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2318 return -EINVAL;
2319
acb4b992 2320 if ((config->min_width > r.width) || (r.width > config->max_width))
308e5bcb 2321 return -EINVAL;
acb4b992
JB		 2322
2323 if ((config->min_height > r.height) || (r.height > config->max_height))
308e5bcb 2324 return -EINVAL;
308e5bcb 2325
308e5bcb
JB		 2326 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2327 if (IS_ERR(fb)) {
1aa1b11c 2328 DRM_DEBUG_KMS("could not create framebuffer\n");
4b096ac1 2329 return PTR_ERR(fb);
308e5bcb
JB		 2330 }
2331
4b096ac1 2332 mutex_lock(&file_priv->fbs_lock);
308e5bcb
JB		 2333 or->fb_id = fb->base.id;
2334 list_add(&fb->filp_head, &file_priv->fbs);
2335 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 2336 mutex_unlock(&file_priv->fbs_lock);
4b096ac1 2337
308e5bcb
JB		 2338 return ret;
2339}
2340
cff91b62 2341static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 2342{
2343 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2344
2345 switch (format) {
2346 case DRM_FORMAT_C8:
2347 case DRM_FORMAT_RGB332:
2348 case DRM_FORMAT_BGR233:
2349 case DRM_FORMAT_XRGB4444:
2350 case DRM_FORMAT_XBGR4444:
2351 case DRM_FORMAT_RGBX4444:
2352 case DRM_FORMAT_BGRX4444:
2353 case DRM_FORMAT_ARGB4444:
2354 case DRM_FORMAT_ABGR4444:
2355 case DRM_FORMAT_RGBA4444:
2356 case DRM_FORMAT_BGRA4444:
2357 case DRM_FORMAT_XRGB1555:
2358 case DRM_FORMAT_XBGR1555:
2359 case DRM_FORMAT_RGBX5551:
2360 case DRM_FORMAT_BGRX5551:
2361 case DRM_FORMAT_ARGB1555:
2362 case DRM_FORMAT_ABGR1555:
2363 case DRM_FORMAT_RGBA5551:
2364 case DRM_FORMAT_BGRA5551:
2365 case DRM_FORMAT_RGB565:
2366 case DRM_FORMAT_BGR565:
2367 case DRM_FORMAT_RGB888:
2368 case DRM_FORMAT_BGR888:
2369 case DRM_FORMAT_XRGB8888:
2370 case DRM_FORMAT_XBGR8888:
2371 case DRM_FORMAT_RGBX8888:
2372 case DRM_FORMAT_BGRX8888:
2373 case DRM_FORMAT_ARGB8888:
2374 case DRM_FORMAT_ABGR8888:
2375 case DRM_FORMAT_RGBA8888:
2376 case DRM_FORMAT_BGRA8888:
2377 case DRM_FORMAT_XRGB2101010:
2378 case DRM_FORMAT_XBGR2101010:
2379 case DRM_FORMAT_RGBX1010102:
2380 case DRM_FORMAT_BGRX1010102:
2381 case DRM_FORMAT_ARGB2101010:
2382 case DRM_FORMAT_ABGR2101010:
2383 case DRM_FORMAT_RGBA1010102:
2384 case DRM_FORMAT_BGRA1010102:
2385 case DRM_FORMAT_YUYV:
2386 case DRM_FORMAT_YVYU:
2387 case DRM_FORMAT_UYVY:
2388 case DRM_FORMAT_VYUY:
2389 case DRM_FORMAT_AYUV:
2390 case DRM_FORMAT_NV12:
2391 case DRM_FORMAT_NV21:
2392 case DRM_FORMAT_NV16:
2393 case DRM_FORMAT_NV61:
ba623f6a
LP		 2394 case DRM_FORMAT_NV24:
2395 case DRM_FORMAT_NV42:
935b5977
VS		 2396 case DRM_FORMAT_YUV410:
2397 case DRM_FORMAT_YVU410:
2398 case DRM_FORMAT_YUV411:
2399 case DRM_FORMAT_YVU411:
2400 case DRM_FORMAT_YUV420:
2401 case DRM_FORMAT_YVU420:
2402 case DRM_FORMAT_YUV422:
2403 case DRM_FORMAT_YVU422:
2404 case DRM_FORMAT_YUV444:
2405 case DRM_FORMAT_YVU444:
2406 return 0;
2407 default:
2408 return -EINVAL;
2409 }
2410}
2411
cff91b62 2412static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 2413{
2414 int ret, hsub, vsub, num_planes, i;
2415
2416 ret = format_check(r);
2417 if (ret) {
1aa1b11c 2418 DRM_DEBUG_KMS("bad framebuffer format 0x%08x\n", r->pixel_format);
d1b45d5f
VS		 2419 return ret;
2420 }
2421
2422 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2423 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2424 num_planes = drm_format_num_planes(r->pixel_format);
2425
2426 if (r->width == 0 || r->width % hsub) {
1aa1b11c 2427 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
d1b45d5f
VS		 2428 return -EINVAL;
2429 }
2430
2431 if (r->height == 0 || r->height % vsub) {
1aa1b11c 2432 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 2433 return -EINVAL;
2434 }
2435
2436 for (i = 0; i < num_planes; i++) {
2437 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 2438 unsigned int height = r->height / (i != 0 ? vsub : 1);
2439 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 2440
2441 if (!r->handles[i]) {
1aa1b11c 2442 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 2443 return -EINVAL;
2444 }
2445
b180b5d1
VS		 2446 if ((uint64_t) width * cpp > UINT_MAX)
2447 return -ERANGE;
2448
2449 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2450 return -ERANGE;
2451
2452 if (r->pitches[i] < width * cpp) {
1aa1b11c 2453 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 2454 return -EINVAL;
2455 }
2456 }
2457
2458 return 0;
2459}
2460
308e5bcb
JB		 2461/**
2462 * drm_mode_addfb2 - add an FB to the graphics configuration
065a50ed
DV		 2463 * @dev: drm device for the ioctl
2464 * @data: data pointer for the ioctl
2465 * @file_priv: drm file for the ioctl call
308e5bcb 2466 *
308e5bcb
JB		 2467 * Add a new FB to the specified CRTC, given a user request with format.
2468 *
2469 * Called by the user via ioctl.
2470 *
2471 * RETURNS:
2472 * Zero on success, errno on failure.
2473 */
2474int drm_mode_addfb2(struct drm_device *dev,
2475 void *data, struct drm_file *file_priv)
2476{
2477 struct drm_mode_fb_cmd2 *r = data;
f453ba04
DA		 2478 struct drm_mode_config *config = &dev->mode_config;
2479 struct drm_framebuffer *fb;
4a1b0714 2480 int ret;
f453ba04 2481
fb3b06c8
DA		 2482 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2483 return -EINVAL;
2484
e3cc3520
VS		 2485 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2486 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2487 return -EINVAL;
2488 }
2489
f453ba04 2490 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 2491 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 2492 r->width, config->min_width, config->max_width);
f453ba04
DA		 2493 return -EINVAL;
2494 }
2495 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 2496 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 2497 r->height, config->min_height, config->max_height);
f453ba04
DA		 2498 return -EINVAL;
2499 }
2500
d1b45d5f
VS		 2501 ret = framebuffer_check(r);
2502 if (ret)
935b5977 2503 return ret;
935b5977 2504
f453ba04 2505 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 2506 if (IS_ERR(fb)) {
1aa1b11c 2507 DRM_DEBUG_KMS("could not create framebuffer\n");
4b096ac1 2508 return PTR_ERR(fb);
f453ba04
DA		 2509 }
2510
4b096ac1 2511 mutex_lock(&file_priv->fbs_lock);
e0c8463a 2512 r->fb_id = fb->base.id;
f453ba04 2513 list_add(&fb->filp_head, &file_priv->fbs);
9440106b 2514 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 2515 mutex_unlock(&file_priv->fbs_lock);
f453ba04 2516
4b096ac1 2517
f453ba04
DA		 2518 return ret;
2519}
2520
2521/**
2522 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 2523 * @dev: drm device for the ioctl
2524 * @data: data pointer for the ioctl
2525 * @file_priv: drm file for the ioctl call
f453ba04 2526 *
f453ba04
DA		 2527 * Remove the FB specified by the user.
2528 *
2529 * Called by the user via ioctl.
2530 *
2531 * RETURNS:
2532 * Zero on success, errno on failure.
2533 */
2534int drm_mode_rmfb(struct drm_device *dev,
2535 void *data, struct drm_file *file_priv)
2536{
f453ba04
DA		 2537 struct drm_framebuffer *fb = NULL;
2538 struct drm_framebuffer *fbl = NULL;
2539 uint32_t *id = data;
f453ba04
DA		 2540 int found = 0;
2541
fb3b06c8
DA		 2542 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2543 return -EINVAL;
2544
4b096ac1 2545 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 2546 mutex_lock(&dev->mode_config.fb_lock);
2547 fb = __drm_framebuffer_lookup(dev, *id);
2548 if (!fb)
2549 goto fail_lookup;
2550
f453ba04
DA		 2551 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2552 if (fb == fbl)
2553 found = 1;
2b677e8c
DV		 2554 if (!found)
2555 goto fail_lookup;
2556
2557 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2558 __drm_framebuffer_unregister(dev, fb);
f453ba04 2559
4b096ac1 2560 list_del_init(&fb->filp_head);
2b677e8c 2561 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 2562 mutex_unlock(&file_priv->fbs_lock);
f453ba04 2563
4b096ac1 2564 drm_framebuffer_remove(fb);
4b096ac1 2565
2b677e8c
DV		 2566 return 0;
2567
2568fail_lookup:
2569 mutex_unlock(&dev->mode_config.fb_lock);
2570 mutex_unlock(&file_priv->fbs_lock);
2571
2572 return -EINVAL;
f453ba04
DA		 2573}
2574
2575/**
2576 * drm_mode_getfb - get FB info
065a50ed
DV		 2577 * @dev: drm device for the ioctl
2578 * @data: data pointer for the ioctl
2579 * @file_priv: drm file for the ioctl call
f453ba04 2580 *
f453ba04
DA		 2581 * Lookup the FB given its ID and return info about it.
2582 *
2583 * Called by the user via ioctl.
2584 *
2585 * RETURNS:
2586 * Zero on success, errno on failure.
2587 */
2588int drm_mode_getfb(struct drm_device *dev,
2589 void *data, struct drm_file *file_priv)
2590{
2591 struct drm_mode_fb_cmd *r = data;
f453ba04 2592 struct drm_framebuffer *fb;
58c0dca1 2593 int ret;
f453ba04 2594
fb3b06c8
DA		 2595 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2596 return -EINVAL;
2597
786b99ed 2598 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1
DV		 2599 if (!fb)
2600 return -EINVAL;
f453ba04
DA		 2601
2602 r->height = fb->height;
2603 r->width = fb->width;
2604 r->depth = fb->depth;
2605 r->bpp = fb->bits_per_pixel;
01f2c773 2606 r->pitch = fb->pitches[0];
af26ef3b
DV		 2607 if (fb->funcs->create_handle)
2608 ret = fb->funcs->create_handle(fb, file_priv, &r->handle);
2609 else
2610 ret = -ENODEV;
f453ba04 2611
58c0dca1
DV		 2612 drm_framebuffer_unreference(fb);
2613
f453ba04
DA		 2614 return ret;
2615}
2616
884840aa
JB		 2617int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2618 void *data, struct drm_file *file_priv)
2619{
2620 struct drm_clip_rect __user *clips_ptr;
2621 struct drm_clip_rect *clips = NULL;
2622 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 2623 struct drm_framebuffer *fb;
2624 unsigned flags;
2625 int num_clips;
4a1b0714 2626 int ret;
884840aa 2627
fb3b06c8
DA		 2628 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2629 return -EINVAL;
2630
786b99ed 2631 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f
DV		 2632 if (!fb)
2633 return -EINVAL;
884840aa
JB		 2634
2635 num_clips = r->num_clips;
81f6c7f8 2636 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 2637
2638 if (!num_clips != !clips_ptr) {
2639 ret = -EINVAL;
2640 goto out_err1;
2641 }
2642
2643 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2644
2645 /* If userspace annotates copy, clips must come in pairs */
2646 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2647 ret = -EINVAL;
2648 goto out_err1;
2649 }
2650
2651 if (num_clips && clips_ptr) {
a5cd3351
XW		 2652 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2653 ret = -EINVAL;
2654 goto out_err1;
2655 }
884840aa
JB		 2656 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2657 if (!clips) {
2658 ret = -ENOMEM;
2659 goto out_err1;
2660 }
2661
2662 ret = copy_from_user(clips, clips_ptr,
2663 num_clips * sizeof(*clips));
e902a358
DC		 2664 if (ret) {
2665 ret = -EFAULT;
884840aa 2666 goto out_err2;
e902a358 2667 }
884840aa
JB		 2668 }
2669
2670 if (fb->funcs->dirty) {
4ccf097f 2671 drm_modeset_lock_all(dev);
02b00162
TH		 2672 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
2673 clips, num_clips);
4ccf097f 2674 drm_modeset_unlock_all(dev);
884840aa
JB		 2675 } else {
2676 ret = -ENOSYS;
884840aa
JB		 2677 }
2678
2679out_err2:
2680 kfree(clips);
2681out_err1:
4ccf097f
DV		 2682 drm_framebuffer_unreference(fb);
2683
884840aa
JB		 2684 return ret;
2685}
2686
2687
f453ba04
DA		 2688/**
2689 * drm_fb_release - remove and free the FBs on this file
065a50ed 2690 * @priv: drm file for the ioctl
f453ba04 2691 *
f453ba04
DA		 2692 * Destroy all the FBs associated with @filp.
2693 *
2694 * Called by the user via ioctl.
2695 *
2696 * RETURNS:
2697 * Zero on success, errno on failure.
2698 */
ea39f835 2699void drm_fb_release(struct drm_file *priv)
f453ba04 2700{
f453ba04
DA		 2701 struct drm_device *dev = priv->minor->dev;
2702 struct drm_framebuffer *fb, *tfb;
2703
4b096ac1 2704 mutex_lock(&priv->fbs_lock);
f453ba04 2705 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 2706
2707 mutex_lock(&dev->mode_config.fb_lock);
2708 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2709 __drm_framebuffer_unregister(dev, fb);
2710 mutex_unlock(&dev->mode_config.fb_lock);
2711
4b096ac1 2712 list_del_init(&fb->filp_head);
2b677e8c
DV		 2713
2714 /* This will also drop the fpriv->fbs reference. */
f7eff60e 2715 drm_framebuffer_remove(fb);
f453ba04 2716 }
4b096ac1 2717 mutex_unlock(&priv->fbs_lock);
f453ba04
DA		 2718}
2719
2720/**
2721 * drm_mode_attachmode - add a mode to the user mode list
2722 * @dev: DRM device
2723 * @connector: connector to add the mode to
2724 * @mode: mode to add
2725 *
2726 * Add @mode to @connector's user mode list.
2727 */
1dd6c8bd
VS		 2728static void drm_mode_attachmode(struct drm_device *dev,
2729 struct drm_connector *connector,
2730 struct drm_display_mode *mode)
f453ba04 2731{
f453ba04 2732 list_add_tail(&mode->head, &connector->user_modes);
f453ba04
DA		 2733}
2734
2735int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
ac235daf 2736 const struct drm_display_mode *mode)
f453ba04
DA		 2737{
2738 struct drm_connector *connector;
ac235daf
VS		 2739 int ret = 0;
2740 struct drm_display_mode *dup_mode, *next;
2741 LIST_HEAD(list);
2742
f453ba04
DA		 2743 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2744 if (!connector->encoder)
ac235daf 2745 continue;
f453ba04 2746 if (connector->encoder->crtc == crtc) {
ac235daf
VS		 2747 dup_mode = drm_mode_duplicate(dev, mode);
2748 if (!dup_mode) {
2749 ret = -ENOMEM;
2750 goto out;
2751 }
2752 list_add_tail(&dup_mode->head, &list);
f453ba04
DA		 2753 }
2754 }
ac235daf
VS		 2755
2756 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2757 if (!connector->encoder)
2758 continue;
2759 if (connector->encoder->crtc == crtc)
2760 list_move_tail(list.next, &connector->user_modes);
2761 }
2762
2763 WARN_ON(!list_empty(&list));
2764
2765 out:
2766 list_for_each_entry_safe(dup_mode, next, &list, head)
2767 drm_mode_destroy(dev, dup_mode);
2768
2769 return ret;
f453ba04
DA		 2770}
2771EXPORT_SYMBOL(drm_mode_attachmode_crtc);
2772
2773static int drm_mode_detachmode(struct drm_device *dev,
2774 struct drm_connector *connector,
2775 struct drm_display_mode *mode)
2776{
2777 int found = 0;
2778 int ret = 0;
2779 struct drm_display_mode *match_mode, *t;
2780
2781 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
2782 if (drm_mode_equal(match_mode, mode)) {
2783 list_del(&match_mode->head);
2784 drm_mode_destroy(dev, match_mode);
2785 found = 1;
2786 break;
2787 }
2788 }
2789
2790 if (!found)
2791 ret = -EINVAL;
2792
2793 return ret;
2794}
2795
2796int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2797{
2798 struct drm_connector *connector;
2799
2800 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2801 drm_mode_detachmode(dev, connector, mode);
2802 }
2803 return 0;
2804}
2805EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2806
2807/**
2808 * drm_fb_attachmode - Attach a user mode to an connector
065a50ed
DV		 2809 * @dev: drm device for the ioctl
2810 * @data: data pointer for the ioctl
2811 * @file_priv: drm file for the ioctl call
f453ba04
DA		 2812 *
2813 * This attaches a user specified mode to an connector.
2814 * Called by the user via ioctl.
2815 *
2816 * RETURNS:
2817 * Zero on success, errno on failure.
2818 */
2819int drm_mode_attachmode_ioctl(struct drm_device *dev,
2820 void *data, struct drm_file *file_priv)
2821{
2822 struct drm_mode_mode_cmd *mode_cmd = data;
2823 struct drm_connector *connector;
2824 struct drm_display_mode *mode;
2825 struct drm_mode_object *obj;
2826 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
4a1b0714 2827 int ret;
f453ba04 2828
fb3b06c8
DA		 2829 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2830 return -EINVAL;
2831
84849903 2832 drm_modeset_lock_all(dev);
f453ba04
DA		 2833
2834 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2835 if (!obj) {
2836 ret = -EINVAL;
2837 goto out;
2838 }
2839 connector = obj_to_connector(obj);
2840
2841 mode = drm_mode_create(dev);
2842 if (!mode) {
2843 ret = -ENOMEM;
2844 goto out;
2845 }
2846
90367bf6
VS		 2847 ret = drm_crtc_convert_umode(mode, umode);
2848 if (ret) {
2849 DRM_DEBUG_KMS("Invalid mode\n");
2850 drm_mode_destroy(dev, mode);
2851 goto out;
2852 }
f453ba04 2853
1dd6c8bd 2854 drm_mode_attachmode(dev, connector, mode);
f453ba04 2855out:
84849903 2856 drm_modeset_unlock_all(dev);
f453ba04
DA		 2857 return ret;
2858}
2859
2860
2861/**
2862 * drm_fb_detachmode - Detach a user specified mode from an connector
065a50ed
DV		 2863 * @dev: drm device for the ioctl
2864 * @data: data pointer for the ioctl
2865 * @file_priv: drm file for the ioctl call
f453ba04
DA		 2866 *
2867 * Called by the user via ioctl.
2868 *
2869 * RETURNS:
2870 * Zero on success, errno on failure.
2871 */
2872int drm_mode_detachmode_ioctl(struct drm_device *dev,
2873 void *data, struct drm_file *file_priv)
2874{
2875 struct drm_mode_object *obj;
2876 struct drm_mode_mode_cmd *mode_cmd = data;
2877 struct drm_connector *connector;
2878 struct drm_display_mode mode;
2879 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
4a1b0714 2880 int ret;
f453ba04 2881
fb3b06c8
DA		 2882 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2883 return -EINVAL;
2884
84849903 2885 drm_modeset_lock_all(dev);
f453ba04
DA		 2886
2887 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2888 if (!obj) {
2889 ret = -EINVAL;
2890 goto out;
2891 }
2892 connector = obj_to_connector(obj);
2893
90367bf6
VS		 2894 ret = drm_crtc_convert_umode(&mode, umode);
2895 if (ret) {
2896 DRM_DEBUG_KMS("Invalid mode\n");
2897 goto out;
2898 }
2899
f453ba04
DA		 2900 ret = drm_mode_detachmode(dev, connector, &mode);
2901out:
84849903 2902 drm_modeset_unlock_all(dev);
f453ba04
DA		 2903 return ret;
2904}
2905
2906struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2907 const char *name, int num_values)
2908{
2909 struct drm_property *property = NULL;
6bfc56aa 2910 int ret;
f453ba04
DA		 2911
2912 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2913 if (!property)
2914 return NULL;
2915
2916 if (num_values) {
2917 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2918 if (!property->values)
2919 goto fail;
2920 }
2921
6bfc56aa
VS		 2922 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2923 if (ret)
2924 goto fail;
2925
f453ba04
DA		 2926 property->flags = flags;
2927 property->num_values = num_values;
2928 INIT_LIST_HEAD(&property->enum_blob_list);
2929
471dd2ef 2930 if (name) {
f453ba04 2931 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 2932 property->name[DRM_PROP_NAME_LEN-1] = '\0';
2933 }
f453ba04
DA		 2934
2935 list_add_tail(&property->head, &dev->mode_config.property_list);
2936 return property;
2937fail:
6bfc56aa 2938 kfree(property->values);
f453ba04
DA		 2939 kfree(property);
2940 return NULL;
2941}
2942EXPORT_SYMBOL(drm_property_create);
2943
4a67d391
SH		 2944struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
2945 const char *name,
2946 const struct drm_prop_enum_list *props,
2947 int num_values)
2948{
2949 struct drm_property *property;
2950 int i, ret;
2951
2952 flags |= DRM_MODE_PROP_ENUM;
2953
2954 property = drm_property_create(dev, flags, name, num_values);
2955 if (!property)
2956 return NULL;
2957
2958 for (i = 0; i < num_values; i++) {
2959 ret = drm_property_add_enum(property, i,
2960 props[i].type,
2961 props[i].name);
2962 if (ret) {
2963 drm_property_destroy(dev, property);
2964 return NULL;
2965 }
2966 }
2967
2968 return property;
2969}
2970EXPORT_SYMBOL(drm_property_create_enum);
2971
49e27545
RC		 2972struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
2973 int flags, const char *name,
2974 const struct drm_prop_enum_list *props,
2975 int num_values)
2976{
2977 struct drm_property *property;
2978 int i, ret;
2979
2980 flags |= DRM_MODE_PROP_BITMASK;
2981
2982 property = drm_property_create(dev, flags, name, num_values);
2983 if (!property)
2984 return NULL;
2985
2986 for (i = 0; i < num_values; i++) {
2987 ret = drm_property_add_enum(property, i,
2988 props[i].type,
2989 props[i].name);
2990 if (ret) {
2991 drm_property_destroy(dev, property);
2992 return NULL;
2993 }
2994 }
2995
2996 return property;
2997}
2998EXPORT_SYMBOL(drm_property_create_bitmask);
2999
d9bc3c02
SH		 3000struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3001 const char *name,
3002 uint64_t min, uint64_t max)
3003{
3004 struct drm_property *property;
3005
3006 flags |= DRM_MODE_PROP_RANGE;
3007
3008 property = drm_property_create(dev, flags, name, 2);
3009 if (!property)
3010 return NULL;
3011
3012 property->values[0] = min;
3013 property->values[1] = max;
3014
3015 return property;
3016}
3017EXPORT_SYMBOL(drm_property_create_range);
3018
f453ba04
DA		 3019int drm_property_add_enum(struct drm_property *property, int index,
3020 uint64_t value, const char *name)
3021{
3022 struct drm_property_enum *prop_enum;
3023
49e27545
RC		 3024 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
3025 return -EINVAL;
3026
3027 /*
3028 * Bitmask enum properties have the additional constraint of values
3029 * from 0 to 63
3030 */
3031 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
f453ba04
DA		 3032 return -EINVAL;
3033
3034 if (!list_empty(&property->enum_blob_list)) {
3035 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3036 if (prop_enum->value == value) {
3037 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3038 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3039 return 0;
3040 }
3041 }
3042 }
3043
3044 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3045 if (!prop_enum)
3046 return -ENOMEM;
3047
3048 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3049 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3050 prop_enum->value = value;
3051
3052 property->values[index] = value;
3053 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3054 return 0;
3055}
3056EXPORT_SYMBOL(drm_property_add_enum);
3057
3058void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3059{
3060 struct drm_property_enum *prop_enum, *pt;
3061
3062 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3063 list_del(&prop_enum->head);
3064 kfree(prop_enum);
3065 }
3066
3067 if (property->num_values)
3068 kfree(property->values);
3069 drm_mode_object_put(dev, &property->base);
3070 list_del(&property->head);
3071 kfree(property);
3072}
3073EXPORT_SYMBOL(drm_property_destroy);
3074
c543188a
PZ		 3075void drm_object_attach_property(struct drm_mode_object *obj,
3076 struct drm_property *property,
3077 uint64_t init_val)
3078{
7f88a9be 3079 int count = obj->properties->count;
c543188a 3080
7f88a9be
PZ		 3081 if (count == DRM_OBJECT_MAX_PROPERTY) {
3082 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3083 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3084 "you see this message on the same object type.\n",
3085 obj->type);
3086 return;
c543188a
PZ		 3087 }
3088
7f88a9be
PZ		 3089 obj->properties->ids[count] = property->base.id;
3090 obj->properties->values[count] = init_val;
3091 obj->properties->count++;
c543188a
PZ		 3092}
3093EXPORT_SYMBOL(drm_object_attach_property);
3094
3095int drm_object_property_set_value(struct drm_mode_object *obj,
3096 struct drm_property *property, uint64_t val)
3097{
3098 int i;
3099
7f88a9be 3100 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3101 if (obj->properties->ids[i] == property->base.id) {
3102 obj->properties->values[i] = val;
3103 return 0;
3104 }
3105 }
3106
3107 return -EINVAL;
3108}
3109EXPORT_SYMBOL(drm_object_property_set_value);
3110
3111int drm_object_property_get_value(struct drm_mode_object *obj,
3112 struct drm_property *property, uint64_t *val)
3113{
3114 int i;
3115
7f88a9be 3116 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3117 if (obj->properties->ids[i] == property->base.id) {
3118 *val = obj->properties->values[i];
3119 return 0;
3120 }
3121 }
3122
3123 return -EINVAL;
3124}
3125EXPORT_SYMBOL(drm_object_property_get_value);
3126
f453ba04
DA		 3127int drm_mode_getproperty_ioctl(struct drm_device *dev,
3128 void *data, struct drm_file *file_priv)
3129{
3130 struct drm_mode_object *obj;
3131 struct drm_mode_get_property *out_resp = data;
3132 struct drm_property *property;
3133 int enum_count = 0;
3134 int blob_count = 0;
3135 int value_count = 0;
3136 int ret = 0, i;
3137 int copied;
3138 struct drm_property_enum *prop_enum;
3139 struct drm_mode_property_enum __user *enum_ptr;
3140 struct drm_property_blob *prop_blob;
81f6c7f8 3141 uint32_t __user *blob_id_ptr;
f453ba04
DA		 3142 uint64_t __user *values_ptr;
3143 uint32_t __user *blob_length_ptr;
3144
fb3b06c8
DA		 3145 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3146 return -EINVAL;
3147
84849903 3148 drm_modeset_lock_all(dev);
f453ba04
DA		 3149 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
3150 if (!obj) {
3151 ret = -EINVAL;
3152 goto done;
3153 }
3154 property = obj_to_property(obj);
3155
49e27545 3156 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3157 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3158 enum_count++;
3159 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3160 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3161 blob_count++;
3162 }
3163
3164 value_count = property->num_values;
3165
3166 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3167 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3168 out_resp->flags = property->flags;
3169
3170 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 3171 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3172 for (i = 0; i < value_count; i++) {
3173 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3174 ret = -EFAULT;
3175 goto done;
3176 }
3177 }
3178 }
3179 out_resp->count_values = value_count;
3180
49e27545 3181 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3182 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3183 copied = 0;
81f6c7f8 3184 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
f453ba04
DA		 3185 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3186
3187 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3188 ret = -EFAULT;
3189 goto done;
3190 }
3191
3192 if (copy_to_user(&enum_ptr[copied].name,
3193 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3194 ret = -EFAULT;
3195 goto done;
3196 }
3197 copied++;
3198 }
3199 }
3200 out_resp->count_enum_blobs = enum_count;
3201 }
3202
3203 if (property->flags & DRM_MODE_PROP_BLOB) {
3204 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3205 copied = 0;
81f6c7f8
VS		 3206 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3207 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3208
3209 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3210 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3211 ret = -EFAULT;
3212 goto done;
3213 }
3214
3215 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3216 ret = -EFAULT;
3217 goto done;
3218 }
3219
3220 copied++;
3221 }
3222 }
3223 out_resp->count_enum_blobs = blob_count;
3224 }
3225done:
84849903 3226 drm_modeset_unlock_all(dev);
f453ba04
DA		 3227 return ret;
3228}
3229
3230static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3231 void *data)
3232{
3233 struct drm_property_blob *blob;
6bfc56aa 3234 int ret;
f453ba04
DA		 3235
3236 if (!length || !data)
3237 return NULL;
3238
3239 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3240 if (!blob)
3241 return NULL;
3242
6bfc56aa
VS		 3243 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3244 if (ret) {
3245 kfree(blob);
3246 return NULL;
3247 }
3248
f453ba04
DA		 3249 blob->length = length;
3250
3251 memcpy(blob->data, data, length);
3252
f453ba04
DA		 3253 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3254 return blob;
3255}
3256
3257static void drm_property_destroy_blob(struct drm_device *dev,
3258 struct drm_property_blob *blob)
3259{
3260 drm_mode_object_put(dev, &blob->base);
3261 list_del(&blob->head);
3262 kfree(blob);
3263}
3264
3265int drm_mode_getblob_ioctl(struct drm_device *dev,
3266 void *data, struct drm_file *file_priv)
3267{
3268 struct drm_mode_object *obj;
3269 struct drm_mode_get_blob *out_resp = data;
3270 struct drm_property_blob *blob;
3271 int ret = 0;
81f6c7f8 3272 void __user *blob_ptr;
f453ba04 3273
fb3b06c8
DA		 3274 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3275 return -EINVAL;
3276
84849903 3277 drm_modeset_lock_all(dev);
f453ba04
DA		 3278 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3279 if (!obj) {
3280 ret = -EINVAL;
3281 goto done;
3282 }
3283 blob = obj_to_blob(obj);
3284
3285 if (out_resp->length == blob->length) {
81f6c7f8 3286 blob_ptr = (void __user *)(unsigned long)out_resp->data;
f453ba04
DA		 3287 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3288 ret = -EFAULT;
3289 goto done;
3290 }
3291 }
3292 out_resp->length = blob->length;
3293
3294done:
84849903 3295 drm_modeset_unlock_all(dev);
f453ba04
DA		 3296 return ret;
3297}
3298
3299int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3300 struct edid *edid)
3301{
3302 struct drm_device *dev = connector->dev;
4a1b0714 3303 int ret, size;
f453ba04
DA		 3304
3305 if (connector->edid_blob_ptr)
3306 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3307
3308 /* Delete edid, when there is none. */
3309 if (!edid) {
3310 connector->edid_blob_ptr = NULL;
58495563 3311 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 3312 return ret;
3313 }
3314
7466f4cc
AJ		 3315 size = EDID_LENGTH * (1 + edid->extensions);
3316 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3317 size, edid);
e655d122
SK		 3318 if (!connector->edid_blob_ptr)
3319 return -EINVAL;
f453ba04 3320
58495563 3321 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 3322 dev->mode_config.edid_property,
3323 connector->edid_blob_ptr->base.id);
3324
3325 return ret;
3326}
3327EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3328
26a34815 3329static bool drm_property_change_is_valid(struct drm_property *property,
592c20ee 3330 uint64_t value)
26a34815
PZ		 3331{
3332 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3333 return false;
3334 if (property->flags & DRM_MODE_PROP_RANGE) {
3335 if (value < property->values[0] || value > property->values[1])
3336 return false;
3337 return true;
49e27545
RC		 3338 } else if (property->flags & DRM_MODE_PROP_BITMASK) {
3339 int i;
592c20ee 3340 uint64_t valid_mask = 0;
49e27545
RC		 3341 for (i = 0; i < property->num_values; i++)
3342 valid_mask |= (1ULL << property->values[i]);
3343 return !(value & ~valid_mask);
c4a56750
VS		 3344 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3345 /* Only the driver knows */
3346 return true;
26a34815
PZ		 3347 } else {
3348 int i;
3349 for (i = 0; i < property->num_values; i++)
3350 if (property->values[i] == value)
3351 return true;
3352 return false;
3353 }
3354}
3355
f453ba04
DA		 3356int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3357 void *data, struct drm_file *file_priv)
3358{
0057d8dd
PZ		 3359 struct drm_mode_connector_set_property *conn_set_prop = data;
3360 struct drm_mode_obj_set_property obj_set_prop = {
3361 .value = conn_set_prop->value,
3362 .prop_id = conn_set_prop->prop_id,
3363 .obj_id = conn_set_prop->connector_id,
3364 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3365 };
fb3b06c8 3366
0057d8dd
PZ		 3367 /* It does all the locking and checking we need */
3368 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 3369}
3370
c543188a
PZ		 3371static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3372 struct drm_property *property,
3373 uint64_t value)
3374{
3375 int ret = -EINVAL;
3376 struct drm_connector *connector = obj_to_connector(obj);
3377
3378 /* Do DPMS ourselves */
3379 if (property == connector->dev->mode_config.dpms_property) {
3380 if (connector->funcs->dpms)
3381 (*connector->funcs->dpms)(connector, (int)value);
3382 ret = 0;
3383 } else if (connector->funcs->set_property)
3384 ret = connector->funcs->set_property(connector, property, value);
3385
3386 /* store the property value if successful */
3387 if (!ret)
58495563 3388 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 3389 return ret;
3390}
3391
bffd9de0
PZ		 3392static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3393 struct drm_property *property,
3394 uint64_t value)
3395{
3396 int ret = -EINVAL;
3397 struct drm_crtc *crtc = obj_to_crtc(obj);
3398
3399 if (crtc->funcs->set_property)
3400 ret = crtc->funcs->set_property(crtc, property, value);
3401 if (!ret)
3402 drm_object_property_set_value(obj, property, value);
3403
3404 return ret;
3405}
3406
4d93914a
RC		 3407static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3408 struct drm_property *property,
3409 uint64_t value)
3410{
3411 int ret = -EINVAL;
3412 struct drm_plane *plane = obj_to_plane(obj);
3413
3414 if (plane->funcs->set_property)
3415 ret = plane->funcs->set_property(plane, property, value);
3416 if (!ret)
3417 drm_object_property_set_value(obj, property, value);
3418
3419 return ret;
3420}
3421
c543188a
PZ		 3422int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3423 struct drm_file *file_priv)
3424{
3425 struct drm_mode_obj_get_properties *arg = data;
3426 struct drm_mode_object *obj;
3427 int ret = 0;
3428 int i;
3429 int copied = 0;
3430 int props_count = 0;
3431 uint32_t __user *props_ptr;
3432 uint64_t __user *prop_values_ptr;
3433
3434 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3435 return -EINVAL;
3436
84849903 3437 drm_modeset_lock_all(dev);
c543188a
PZ		 3438
3439 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3440 if (!obj) {
3441 ret = -EINVAL;
3442 goto out;
3443 }
3444 if (!obj->properties) {
3445 ret = -EINVAL;
3446 goto out;
3447 }
3448
7f88a9be 3449 props_count = obj->properties->count;
c543188a
PZ		 3450
3451 /* This ioctl is called twice, once to determine how much space is
3452 * needed, and the 2nd time to fill it. */
3453 if ((arg->count_props >= props_count) && props_count) {
3454 copied = 0;
3455 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3456 prop_values_ptr = (uint64_t __user *)(unsigned long)
3457 (arg->prop_values_ptr);
3458 for (i = 0; i < props_count; i++) {
3459 if (put_user(obj->properties->ids[i],
3460 props_ptr + copied)) {
3461 ret = -EFAULT;
3462 goto out;
3463 }
3464 if (put_user(obj->properties->values[i],
3465 prop_values_ptr + copied)) {
3466 ret = -EFAULT;
3467 goto out;
3468 }
3469 copied++;
3470 }
3471 }
3472 arg->count_props = props_count;
3473out:
84849903 3474 drm_modeset_unlock_all(dev);
c543188a
PZ		 3475 return ret;
3476}
3477
3478int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3479 struct drm_file *file_priv)
3480{
3481 struct drm_mode_obj_set_property *arg = data;
3482 struct drm_mode_object *arg_obj;
3483 struct drm_mode_object *prop_obj;
3484 struct drm_property *property;
3485 int ret = -EINVAL;
3486 int i;
3487
3488 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3489 return -EINVAL;
3490
84849903 3491 drm_modeset_lock_all(dev);
c543188a
PZ		 3492
3493 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3494 if (!arg_obj)
3495 goto out;
3496 if (!arg_obj->properties)
3497 goto out;
3498
7f88a9be 3499 for (i = 0; i < arg_obj->properties->count; i++)
c543188a
PZ		 3500 if (arg_obj->properties->ids[i] == arg->prop_id)
3501 break;
3502
7f88a9be 3503 if (i == arg_obj->properties->count)
c543188a
PZ		 3504 goto out;
3505
3506 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3507 DRM_MODE_OBJECT_PROPERTY);
3508 if (!prop_obj)
3509 goto out;
3510 property = obj_to_property(prop_obj);
3511
3512 if (!drm_property_change_is_valid(property, arg->value))
3513 goto out;
3514
3515 switch (arg_obj->type) {
3516 case DRM_MODE_OBJECT_CONNECTOR:
3517 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3518 arg->value);
3519 break;
bffd9de0
PZ		 3520 case DRM_MODE_OBJECT_CRTC:
3521 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3522 break;
4d93914a
RC		 3523 case DRM_MODE_OBJECT_PLANE:
3524 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3525 break;
c543188a
PZ		 3526 }
3527
3528out:
84849903 3529 drm_modeset_unlock_all(dev);
c543188a
PZ		 3530 return ret;
3531}
3532
f453ba04
DA		 3533int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3534 struct drm_encoder *encoder)
3535{
3536 int i;
3537
3538 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3539 if (connector->encoder_ids[i] == 0) {
3540 connector->encoder_ids[i] = encoder->base.id;
3541 return 0;
3542 }
3543 }
3544 return -ENOMEM;
3545}
3546EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3547
3548void drm_mode_connector_detach_encoder(struct drm_connector *connector,
3549 struct drm_encoder *encoder)
3550{
3551 int i;
3552 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3553 if (connector->encoder_ids[i] == encoder->base.id) {
3554 connector->encoder_ids[i] = 0;
3555 if (connector->encoder == encoder)
3556 connector->encoder = NULL;
3557 break;
3558 }
3559 }
3560}
3561EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
3562
4cae5b84 3563int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
f453ba04
DA		 3564 int gamma_size)
3565{
3566 crtc->gamma_size = gamma_size;
3567
3568 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3569 if (!crtc->gamma_store) {
3570 crtc->gamma_size = 0;
4cae5b84 3571 return -ENOMEM;
f453ba04
DA		 3572 }
3573
4cae5b84 3574 return 0;
f453ba04
DA		 3575}
3576EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3577
3578int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3579 void *data, struct drm_file *file_priv)
3580{
3581 struct drm_mode_crtc_lut *crtc_lut = data;
3582 struct drm_mode_object *obj;
3583 struct drm_crtc *crtc;
3584 void *r_base, *g_base, *b_base;
3585 int size;
3586 int ret = 0;
3587
fb3b06c8
DA		 3588 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3589 return -EINVAL;
3590
84849903 3591 drm_modeset_lock_all(dev);
f453ba04
DA		 3592 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3593 if (!obj) {
3594 ret = -EINVAL;
3595 goto out;
3596 }
3597 crtc = obj_to_crtc(obj);
3598
ebe0f244
LP		 3599 if (crtc->funcs->gamma_set == NULL) {
3600 ret = -ENOSYS;
3601 goto out;
3602 }
3603
f453ba04
DA		 3604 /* memcpy into gamma store */
3605 if (crtc_lut->gamma_size != crtc->gamma_size) {
3606 ret = -EINVAL;
3607 goto out;
3608 }
3609
3610 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3611 r_base = crtc->gamma_store;
3612 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
3613 ret = -EFAULT;
3614 goto out;
3615 }
3616
3617 g_base = r_base + size;
3618 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
3619 ret = -EFAULT;
3620 goto out;
3621 }
3622
3623 b_base = g_base + size;
3624 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
3625 ret = -EFAULT;
3626 goto out;
3627 }
3628
7203425a 3629 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 3630
3631out:
84849903 3632 drm_modeset_unlock_all(dev);
f453ba04
DA		 3633 return ret;
3634
3635}
3636
3637int drm_mode_gamma_get_ioctl(struct drm_device *dev,
3638 void *data, struct drm_file *file_priv)
3639{
3640 struct drm_mode_crtc_lut *crtc_lut = data;
3641 struct drm_mode_object *obj;
3642 struct drm_crtc *crtc;
3643 void *r_base, *g_base, *b_base;
3644 int size;
3645 int ret = 0;
3646
fb3b06c8
DA		 3647 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3648 return -EINVAL;
3649
84849903 3650 drm_modeset_lock_all(dev);
f453ba04
DA		 3651 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3652 if (!obj) {
3653 ret = -EINVAL;
3654 goto out;
3655 }
3656 crtc = obj_to_crtc(obj);
3657
3658 /* memcpy into gamma store */
3659 if (crtc_lut->gamma_size != crtc->gamma_size) {
3660 ret = -EINVAL;
3661 goto out;
3662 }
3663
3664 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3665 r_base = crtc->gamma_store;
3666 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
3667 ret = -EFAULT;
3668 goto out;
3669 }
3670
3671 g_base = r_base + size;
3672 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
3673 ret = -EFAULT;
3674 goto out;
3675 }
3676
3677 b_base = g_base + size;
3678 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
3679 ret = -EFAULT;
3680 goto out;
3681 }
3682out:
84849903 3683 drm_modeset_unlock_all(dev);
f453ba04
DA		 3684 return ret;
3685}
d91d8a3f
KH		 3686
3687int drm_mode_page_flip_ioctl(struct drm_device *dev,
3688 void *data, struct drm_file *file_priv)
3689{
3690 struct drm_mode_crtc_page_flip *page_flip = data;
3691 struct drm_mode_object *obj;
3692 struct drm_crtc *crtc;
b0d12325 3693 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
d91d8a3f
KH		 3694 struct drm_pending_vblank_event *e = NULL;
3695 unsigned long flags;
7c80e128 3696 int hdisplay, vdisplay;
d91d8a3f
KH		 3697 int ret = -EINVAL;
3698
3699 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
3700 page_flip->reserved != 0)
3701 return -EINVAL;
3702
d91d8a3f
KH		 3703 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
3704 if (!obj)
b4d5e7d1 3705 return -EINVAL;
d91d8a3f
KH		 3706 crtc = obj_to_crtc(obj);
3707
b4d5e7d1 3708 mutex_lock(&crtc->mutex);
90c1efdd
CW		 3709 if (crtc->fb == NULL) {
3710 /* The framebuffer is currently unbound, presumably
3711 * due to a hotplug event, that userspace has not
3712 * yet discovered.
3713 */
3714 ret = -EBUSY;
3715 goto out;
3716 }
3717
d91d8a3f
KH		 3718 if (crtc->funcs->page_flip == NULL)
3719 goto out;
3720
786b99ed
DV		 3721 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
3722 if (!fb)
d91d8a3f 3723 goto out;
d91d8a3f 3724
7c80e128
RC		 3725 hdisplay = crtc->mode.hdisplay;
3726 vdisplay = crtc->mode.vdisplay;
3727
3728 if (crtc->invert_dimensions)
3729 swap(hdisplay, vdisplay);
3730
3731 if (hdisplay > fb->width ||
3732 vdisplay > fb->height ||
3733 crtc->x > fb->width - hdisplay ||
3734 crtc->y > fb->height - vdisplay) {
3735 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
3736 fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y,
3737 crtc->invert_dimensions ? " (inverted)" : "");
5f61bb42
VS		 3738 ret = -ENOSPC;
3739 goto out;
3740 }
3741
d91d8a3f
KH		 3742 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3743 ret = -ENOMEM;
3744 spin_lock_irqsave(&dev->event_lock, flags);
3745 if (file_priv->event_space < sizeof e->event) {
3746 spin_unlock_irqrestore(&dev->event_lock, flags);
3747 goto out;
3748 }
3749 file_priv->event_space -= sizeof e->event;
3750 spin_unlock_irqrestore(&dev->event_lock, flags);
3751
3752 e = kzalloc(sizeof *e, GFP_KERNEL);
3753 if (e == NULL) {
3754 spin_lock_irqsave(&dev->event_lock, flags);
3755 file_priv->event_space += sizeof e->event;
3756 spin_unlock_irqrestore(&dev->event_lock, flags);
3757 goto out;
3758 }
3759
7bd4d7be 3760 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
d91d8a3f
KH		 3761 e->event.base.length = sizeof e->event;
3762 e->event.user_data = page_flip->user_data;
3763 e->base.event = &e->event.base;
3764 e->base.file_priv = file_priv;
3765 e->base.destroy =
3766 (void (*) (struct drm_pending_event *)) kfree;
3767 }
3768
b0d12325 3769 old_fb = crtc->fb;
d91d8a3f
KH		 3770 ret = crtc->funcs->page_flip(crtc, fb, e);
3771 if (ret) {
aef6a7ee
JS		 3772 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3773 spin_lock_irqsave(&dev->event_lock, flags);
3774 file_priv->event_space += sizeof e->event;
3775 spin_unlock_irqrestore(&dev->event_lock, flags);
3776 kfree(e);
3777 }
b0d12325
DV		 3778 /* Keep the old fb, don't unref it. */
3779 old_fb = NULL;
3780 } else {
8cf1e981
TR		 3781 /*
3782 * Warn if the driver hasn't properly updated the crtc->fb
3783 * field to reflect that the new framebuffer is now used.
3784 * Failing to do so will screw with the reference counting
3785 * on framebuffers.
3786 */
3787 WARN_ON(crtc->fb != fb);
b0d12325
DV		 3788 /* Unref only the old framebuffer. */
3789 fb = NULL;
d91d8a3f
KH		 3790 }
3791
3792out:
b0d12325
DV		 3793 if (fb)
3794 drm_framebuffer_unreference(fb);
3795 if (old_fb)
3796 drm_framebuffer_unreference(old_fb);
b4d5e7d1
DV		 3797 mutex_unlock(&crtc->mutex);
3798
d91d8a3f
KH		 3799 return ret;
3800}
eb033556
CW		 3801
3802void drm_mode_config_reset(struct drm_device *dev)
3803{
3804 struct drm_crtc *crtc;
3805 struct drm_encoder *encoder;
3806 struct drm_connector *connector;
3807
3808 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
3809 if (crtc->funcs->reset)
3810 crtc->funcs->reset(crtc);
3811
3812 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
3813 if (encoder->funcs->reset)
3814 encoder->funcs->reset(encoder);
3815
5e2cb2f6
DV		 3816 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
3817 connector->status = connector_status_unknown;
3818
eb033556
CW		 3819 if (connector->funcs->reset)
3820 connector->funcs->reset(connector);
5e2cb2f6 3821 }
eb033556
CW		 3822}
3823EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b
DA		 3824
3825int drm_mode_create_dumb_ioctl(struct drm_device *dev,
3826 void *data, struct drm_file *file_priv)
3827{
3828 struct drm_mode_create_dumb *args = data;
3829
3830 if (!dev->driver->dumb_create)
3831 return -ENOSYS;
3832 return dev->driver->dumb_create(file_priv, dev, args);
3833}
3834
3835int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
3836 void *data, struct drm_file *file_priv)
3837{
3838 struct drm_mode_map_dumb *args = data;
3839
3840 /* call driver ioctl to get mmap offset */
3841 if (!dev->driver->dumb_map_offset)
3842 return -ENOSYS;
3843
3844 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
3845}
3846
3847int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
3848 void *data, struct drm_file *file_priv)
3849{
3850 struct drm_mode_destroy_dumb *args = data;
3851
3852 if (!dev->driver->dumb_destroy)
3853 return -ENOSYS;
3854
3855 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
3856}
248dbc23
DA		 3857
3858/*
3859 * Just need to support RGB formats here for compat with code that doesn't
3860 * use pixel formats directly yet.
3861 */
3862void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
3863 int *bpp)
3864{
3865 switch (format) {
c51a6bc5 3866 case DRM_FORMAT_C8:
04b3924d
VS		 3867 case DRM_FORMAT_RGB332:
3868 case DRM_FORMAT_BGR233:
248dbc23
DA		 3869 *depth = 8;
3870 *bpp = 8;
3871 break;
04b3924d
VS		 3872 case DRM_FORMAT_XRGB1555:
3873 case DRM_FORMAT_XBGR1555:
3874 case DRM_FORMAT_RGBX5551:
3875 case DRM_FORMAT_BGRX5551:
3876 case DRM_FORMAT_ARGB1555:
3877 case DRM_FORMAT_ABGR1555:
3878 case DRM_FORMAT_RGBA5551:
3879 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 3880 *depth = 15;
3881 *bpp = 16;
3882 break;
04b3924d
VS		 3883 case DRM_FORMAT_RGB565:
3884 case DRM_FORMAT_BGR565:
248dbc23
DA		 3885 *depth = 16;
3886 *bpp = 16;
3887 break;
04b3924d
VS		 3888 case DRM_FORMAT_RGB888:
3889 case DRM_FORMAT_BGR888:
3890 *depth = 24;
3891 *bpp = 24;
3892 break;
3893 case DRM_FORMAT_XRGB8888:
3894 case DRM_FORMAT_XBGR8888:
3895 case DRM_FORMAT_RGBX8888:
3896 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 3897 *depth = 24;
3898 *bpp = 32;
3899 break;
04b3924d
VS		 3900 case DRM_FORMAT_XRGB2101010:
3901 case DRM_FORMAT_XBGR2101010:
3902 case DRM_FORMAT_RGBX1010102:
3903 case DRM_FORMAT_BGRX1010102:
3904 case DRM_FORMAT_ARGB2101010:
3905 case DRM_FORMAT_ABGR2101010:
3906 case DRM_FORMAT_RGBA1010102:
3907 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 3908 *depth = 30;
3909 *bpp = 32;
3910 break;
04b3924d
VS		 3911 case DRM_FORMAT_ARGB8888:
3912 case DRM_FORMAT_ABGR8888:
3913 case DRM_FORMAT_RGBA8888:
3914 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 3915 *depth = 32;
3916 *bpp = 32;
3917 break;
3918 default:
3919 DRM_DEBUG_KMS("unsupported pixel format\n");
3920 *depth = 0;
3921 *bpp = 0;
3922 break;
3923 }
3924}
3925EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 3926
3927/**
3928 * drm_format_num_planes - get the number of planes for format
3929 * @format: pixel format (DRM_FORMAT_*)
3930 *
3931 * RETURNS:
3932 * The number of planes used by the specified pixel format.
3933 */
3934int drm_format_num_planes(uint32_t format)
3935{
3936 switch (format) {
3937 case DRM_FORMAT_YUV410:
3938 case DRM_FORMAT_YVU410:
3939 case DRM_FORMAT_YUV411:
3940 case DRM_FORMAT_YVU411:
3941 case DRM_FORMAT_YUV420:
3942 case DRM_FORMAT_YVU420:
3943 case DRM_FORMAT_YUV422:
3944 case DRM_FORMAT_YVU422:
3945 case DRM_FORMAT_YUV444:
3946 case DRM_FORMAT_YVU444:
3947 return 3;
3948 case DRM_FORMAT_NV12:
3949 case DRM_FORMAT_NV21:
3950 case DRM_FORMAT_NV16:
3951 case DRM_FORMAT_NV61:
ba623f6a
LP		 3952 case DRM_FORMAT_NV24:
3953 case DRM_FORMAT_NV42:
141670e9
VS		 3954 return 2;
3955 default:
3956 return 1;
3957 }
3958}
3959EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 3960
3961/**
3962 * drm_format_plane_cpp - determine the bytes per pixel value
3963 * @format: pixel format (DRM_FORMAT_*)
3964 * @plane: plane index
3965 *
3966 * RETURNS:
3967 * The bytes per pixel value for the specified plane.
3968 */
3969int drm_format_plane_cpp(uint32_t format, int plane)
3970{
3971 unsigned int depth;
3972 int bpp;
3973
3974 if (plane >= drm_format_num_planes(format))
3975 return 0;
3976
3977 switch (format) {
3978 case DRM_FORMAT_YUYV:
3979 case DRM_FORMAT_YVYU:
3980 case DRM_FORMAT_UYVY:
3981 case DRM_FORMAT_VYUY:
3982 return 2;
3983 case DRM_FORMAT_NV12:
3984 case DRM_FORMAT_NV21:
3985 case DRM_FORMAT_NV16:
3986 case DRM_FORMAT_NV61:
ba623f6a
LP		 3987 case DRM_FORMAT_NV24:
3988 case DRM_FORMAT_NV42:
5a86bd55
VS		 3989 return plane ? 2 : 1;
3990 case DRM_FORMAT_YUV410:
3991 case DRM_FORMAT_YVU410:
3992 case DRM_FORMAT_YUV411:
3993 case DRM_FORMAT_YVU411:
3994 case DRM_FORMAT_YUV420:
3995 case DRM_FORMAT_YVU420:
3996 case DRM_FORMAT_YUV422:
3997 case DRM_FORMAT_YVU422:
3998 case DRM_FORMAT_YUV444:
3999 case DRM_FORMAT_YVU444:
4000 return 1;
4001 default:
4002 drm_fb_get_bpp_depth(format, &depth, &bpp);
4003 return bpp >> 3;
4004 }
4005}
4006EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 4007
4008/**
4009 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4010 * @format: pixel format (DRM_FORMAT_*)
4011 *
4012 * RETURNS:
4013 * The horizontal chroma subsampling factor for the
4014 * specified pixel format.
4015 */
4016int drm_format_horz_chroma_subsampling(uint32_t format)
4017{
4018 switch (format) {
4019 case DRM_FORMAT_YUV411:
4020 case DRM_FORMAT_YVU411:
4021 case DRM_FORMAT_YUV410:
4022 case DRM_FORMAT_YVU410:
4023 return 4;
4024 case DRM_FORMAT_YUYV:
4025 case DRM_FORMAT_YVYU:
4026 case DRM_FORMAT_UYVY:
4027 case DRM_FORMAT_VYUY:
4028 case DRM_FORMAT_NV12:
4029 case DRM_FORMAT_NV21:
4030 case DRM_FORMAT_NV16:
4031 case DRM_FORMAT_NV61:
4032 case DRM_FORMAT_YUV422:
4033 case DRM_FORMAT_YVU422:
4034 case DRM_FORMAT_YUV420:
4035 case DRM_FORMAT_YVU420:
4036 return 2;
4037 default:
4038 return 1;
4039 }
4040}
4041EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4042
4043/**
4044 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4045 * @format: pixel format (DRM_FORMAT_*)
4046 *
4047 * RETURNS:
4048 * The vertical chroma subsampling factor for the
4049 * specified pixel format.
4050 */
4051int drm_format_vert_chroma_subsampling(uint32_t format)
4052{
4053 switch (format) {
4054 case DRM_FORMAT_YUV410:
4055 case DRM_FORMAT_YVU410:
4056 return 4;
4057 case DRM_FORMAT_YUV420:
4058 case DRM_FORMAT_YVU420:
4059 case DRM_FORMAT_NV12:
4060 case DRM_FORMAT_NV21:
4061 return 2;
4062 default:
4063 return 1;
4064 }
4065}
4066EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
Linux kernel - Deliverables
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