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drm: Improve on minor type helpers v3
[linux-2.6-block.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 */
6ba6d03e 32#include <linux/ctype.h>
f453ba04 33#include <linux/list.h>
5a0e3ad6 34#include <linux/slab.h>
2d1a8a48 35#include <linux/export.h>
760285e7
DH		 36#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
38#include <drm/drm_edid.h>
39#include <drm/drm_fourcc.h>
f453ba04 40
8bd441b2
DV		 41#include "drm_crtc_internal.h"
42
84849903
DV		 43/**
44 * drm_modeset_lock_all - take all modeset locks
45 * @dev: drm device
46 *
47 * This function takes all modeset locks, suitable where a more fine-grained
c8e32cc1
DV		 48 * scheme isn't (yet) implemented. Locks must be dropped with
49 * drm_modeset_unlock_all.
84849903
DV		 50 */
51void drm_modeset_lock_all(struct drm_device *dev)
52{
29494c17
DV		 53 struct drm_crtc *crtc;
54
84849903 55 mutex_lock(&dev->mode_config.mutex);
29494c17
DV		 56
57 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
58 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
84849903
DV		 59}
60EXPORT_SYMBOL(drm_modeset_lock_all);
61
62/**
63 * drm_modeset_unlock_all - drop all modeset locks
64 * @dev: device
c8e32cc1
DV		 65 *
66 * This function drop all modeset locks taken by drm_modeset_lock_all.
84849903
DV		 67 */
68void drm_modeset_unlock_all(struct drm_device *dev)
69{
29494c17
DV		 70 struct drm_crtc *crtc;
71
72 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
73 mutex_unlock(&crtc->mutex);
74
84849903
DV		 75 mutex_unlock(&dev->mode_config.mutex);
76}
77EXPORT_SYMBOL(drm_modeset_unlock_all);
78
6aed8ec3
DV		 79/**
80 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked
81 * @dev: device
c8e32cc1
DV		 82 *
83 * Useful as a debug assert.
6aed8ec3
DV		 84 */
85void drm_warn_on_modeset_not_all_locked(struct drm_device *dev)
86{
87 struct drm_crtc *crtc;
88
a9b054e8
DV		 89 /* Locking is currently fubar in the panic handler. */
90 if (oops_in_progress)
91 return;
92
6aed8ec3
DV		 93 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
94 WARN_ON(!mutex_is_locked(&crtc->mutex));
95
96 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex));
97}
98EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked);
99
f453ba04
DA		 100/* Avoid boilerplate. I'm tired of typing. */
101#define DRM_ENUM_NAME_FN(fnname, list) \
d20d3174 102 const char *fnname(int val) \
f453ba04
DA		 103 { \
104 int i; \
105 for (i = 0; i < ARRAY_SIZE(list); i++) { \
106 if (list[i].type == val) \
107 return list[i].name; \
108 } \
109 return "(unknown)"; \
110 }
111
112/*
113 * Global properties
114 */
d20d3174 115static const struct drm_prop_enum_list drm_dpms_enum_list[] =
f453ba04
DA		 116{ { DRM_MODE_DPMS_ON, "On" },
117 { DRM_MODE_DPMS_STANDBY, "Standby" },
118 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
119 { DRM_MODE_DPMS_OFF, "Off" }
120};
121
122DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
123
124/*
125 * Optional properties
126 */
d20d3174 127static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
f453ba04 128{
53bd8389
JB		 129 { DRM_MODE_SCALE_NONE, "None" },
130 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
131 { DRM_MODE_SCALE_CENTER, "Center" },
132 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
f453ba04
DA		 133};
134
f453ba04
DA		 135/*
136 * Non-global properties, but "required" for certain connectors.
137 */
d20d3174 138static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
f453ba04
DA		 139{
140 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
141 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
142 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
143};
144
145DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
146
d20d3174 147static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
f453ba04
DA		 148{
149 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
150 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
151 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
152};
153
154DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
155 drm_dvi_i_subconnector_enum_list)
156
d20d3174 157static const struct drm_prop_enum_list drm_tv_select_enum_list[] =
f453ba04
DA		 158{
159 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
160 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
161 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
162 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 163 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 164};
165
166DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
167
d20d3174 168static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
f453ba04
DA		 169{
170 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
171 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
172 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
173 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
aeaa1ad3 174 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
f453ba04
DA		 175};
176
177DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
178 drm_tv_subconnector_enum_list)
179
d20d3174 180static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
884840aa
JB		 181 { DRM_MODE_DIRTY_OFF, "Off" },
182 { DRM_MODE_DIRTY_ON, "On" },
183 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
184};
185
f453ba04
DA		 186struct drm_conn_prop_enum_list {
187 int type;
d20d3174 188 const char *name;
b21e3afe 189 struct ida ida;
f453ba04
DA		 190};
191
192/*
193 * Connector and encoder types.
194 */
195static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
b21e3afe
IM		 196{ { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
197 { DRM_MODE_CONNECTOR_VGA, "VGA" },
198 { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
199 { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
200 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
201 { DRM_MODE_CONNECTOR_Composite, "Composite" },
202 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
203 { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
204 { DRM_MODE_CONNECTOR_Component, "Component" },
205 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
206 { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
207 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
208 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
209 { DRM_MODE_CONNECTOR_TV, "TV" },
210 { DRM_MODE_CONNECTOR_eDP, "eDP" },
211 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
b8923273 212 { DRM_MODE_CONNECTOR_DSI, "DSI" },
f453ba04
DA		 213};
214
d20d3174 215static const struct drm_prop_enum_list drm_encoder_enum_list[] =
f453ba04
DA		 216{ { DRM_MODE_ENCODER_NONE, "None" },
217 { DRM_MODE_ENCODER_DAC, "DAC" },
218 { DRM_MODE_ENCODER_TMDS, "TMDS" },
219 { DRM_MODE_ENCODER_LVDS, "LVDS" },
220 { DRM_MODE_ENCODER_TVDAC, "TV" },
a7331e5c 221 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
b8923273 222 { DRM_MODE_ENCODER_DSI, "DSI" },
f453ba04
DA		 223};
224
ac1bb36c
JB		 225static const struct drm_prop_enum_list drm_subpixel_enum_list[] =
226{
227 { SubPixelUnknown, "Unknown" },
228 { SubPixelHorizontalRGB, "Horizontal RGB" },
229 { SubPixelHorizontalBGR, "Horizontal BGR" },
230 { SubPixelVerticalRGB, "Vertical RGB" },
231 { SubPixelVerticalBGR, "Vertical BGR" },
232 { SubPixelNone, "None" },
233};
234
b21e3afe
IM		 235void drm_connector_ida_init(void)
236{
237 int i;
238
239 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
240 ida_init(&drm_connector_enum_list[i].ida);
241}
242
243void drm_connector_ida_destroy(void)
244{
245 int i;
246
247 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
248 ida_destroy(&drm_connector_enum_list[i].ida);
249}
250
c8e32cc1
DV		 251/**
252 * drm_get_encoder_name - return a string for encoder
253 * @encoder: encoder to compute name of
254 *
255 * Note that the buffer used by this function is globally shared and owned by
256 * the function itself.
257 *
258 * FIXME: This isn't really multithreading safe.
259 */
d20d3174 260const char *drm_get_encoder_name(const struct drm_encoder *encoder)
f453ba04
DA		 261{
262 static char buf[32];
263
264 snprintf(buf, 32, "%s-%d",
265 drm_encoder_enum_list[encoder->encoder_type].name,
266 encoder->base.id);
267 return buf;
268}
13a8195b 269EXPORT_SYMBOL(drm_get_encoder_name);
f453ba04 270
c8e32cc1
DV		 271/**
272 * drm_get_connector_name - return a string for connector
273 * @connector: connector to compute name of
274 *
275 * Note that the buffer used by this function is globally shared and owned by
276 * the function itself.
277 *
278 * FIXME: This isn't really multithreading safe.
279 */
d20d3174 280const char *drm_get_connector_name(const struct drm_connector *connector)
f453ba04
DA		 281{
282 static char buf[32];
283
284 snprintf(buf, 32, "%s-%d",
285 drm_connector_enum_list[connector->connector_type].name,
286 connector->connector_type_id);
287 return buf;
288}
289EXPORT_SYMBOL(drm_get_connector_name);
290
c8e32cc1
DV		 291/**
292 * drm_get_connector_status_name - return a string for connector status
293 * @status: connector status to compute name of
294 *
295 * In contrast to the other drm_get_*_name functions this one here returns a
296 * const pointer and hence is threadsafe.
297 */
d20d3174 298const char *drm_get_connector_status_name(enum drm_connector_status status)
f453ba04
DA		 299{
300 if (status == connector_status_connected)
301 return "connected";
302 else if (status == connector_status_disconnected)
303 return "disconnected";
304 else
305 return "unknown";
306}
ed7951dc 307EXPORT_SYMBOL(drm_get_connector_status_name);
f453ba04 308
ac1bb36c
JB		 309/**
310 * drm_get_subpixel_order_name - return a string for a given subpixel enum
311 * @order: enum of subpixel_order
312 *
313 * Note you could abuse this and return something out of bounds, but that
314 * would be a caller error. No unscrubbed user data should make it here.
315 */
316const char *drm_get_subpixel_order_name(enum subpixel_order order)
317{
318 return drm_subpixel_enum_list[order].name;
319}
320EXPORT_SYMBOL(drm_get_subpixel_order_name);
321
6ba6d03e
VS		 322static char printable_char(int c)
323{
324 return isascii(c) && isprint(c) ? c : '?';
325}
326
c8e32cc1
DV		 327/**
328 * drm_get_format_name - return a string for drm fourcc format
329 * @format: format to compute name of
330 *
331 * Note that the buffer used by this function is globally shared and owned by
332 * the function itself.
333 *
334 * FIXME: This isn't really multithreading safe.
335 */
d20d3174 336const char *drm_get_format_name(uint32_t format)
6ba6d03e
VS		 337{
338 static char buf[32];
339
340 snprintf(buf, sizeof(buf),
341 "%c%c%c%c %s-endian (0x%08x)",
342 printable_char(format & 0xff),
343 printable_char((format >> 8) & 0xff),
344 printable_char((format >> 16) & 0xff),
345 printable_char((format >> 24) & 0x7f),
346 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
347 format);
348
349 return buf;
350}
351EXPORT_SYMBOL(drm_get_format_name);
352
f453ba04 353/**
065a50ed 354 * drm_mode_object_get - allocate a new modeset identifier
f453ba04 355 * @dev: DRM device
065a50ed
DV		 356 * @obj: object pointer, used to generate unique ID
357 * @obj_type: object type
f453ba04 358 *
f453ba04 359 * Create a unique identifier based on @ptr in @dev's identifier space. Used
c8e32cc1
DV		 360 * for tracking modes, CRTCs and connectors. Note that despite the _get postfix
361 * modeset identifiers are _not_ reference counted. Hence don't use this for
362 * reference counted modeset objects like framebuffers.
f453ba04 363 *
c8e32cc1 364 * Returns:
f453ba04
DA		 365 * New unique (relative to other objects in @dev) integer identifier for the
366 * object.
367 */
8bd441b2
DV		 368int drm_mode_object_get(struct drm_device *dev,
369 struct drm_mode_object *obj, uint32_t obj_type)
f453ba04 370{
f453ba04
DA		 371 int ret;
372
ad2563c2 373 mutex_lock(&dev->mode_config.idr_mutex);
2e928815
TH		 374 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
375 if (ret >= 0) {
4b096ac1
DV		 376 /*
377 * Set up the object linking under the protection of the idr
378 * lock so that other users can't see inconsistent state.
379 */
2e928815 380 obj->id = ret;
4b096ac1
DV		 381 obj->type = obj_type;
382 }
ad2563c2 383 mutex_unlock(&dev->mode_config.idr_mutex);
4b096ac1 384
2e928815 385 return ret < 0 ? ret : 0;
f453ba04
DA		 386}
387
388/**
065a50ed 389 * drm_mode_object_put - free a modeset identifer
f453ba04 390 * @dev: DRM device
065a50ed 391 * @object: object to free
f453ba04 392 *
c8e32cc1
DV		 393 * Free @id from @dev's unique identifier pool. Note that despite the _get
394 * postfix modeset identifiers are _not_ reference counted. Hence don't use this
395 * for reference counted modeset objects like framebuffers.
f453ba04 396 */
8bd441b2
DV		 397void drm_mode_object_put(struct drm_device *dev,
398 struct drm_mode_object *object)
f453ba04 399{
ad2563c2 400 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04 401 idr_remove(&dev->mode_config.crtc_idr, object->id);
ad2563c2 402 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 403}
404
786b99ed
DV		 405/**
406 * drm_mode_object_find - look up a drm object with static lifetime
407 * @dev: drm device
408 * @id: id of the mode object
409 * @type: type of the mode object
410 *
411 * Note that framebuffers cannot be looked up with this functions - since those
412 * are reference counted, they need special treatment.
413 */
7a9c9060
DV		 414struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
415 uint32_t id, uint32_t type)
f453ba04 416{
ad2563c2 417 struct drm_mode_object *obj = NULL;
f453ba04 418
786b99ed
DV		 419 /* Framebuffers are reference counted and need their own lookup
420 * function.*/
421 WARN_ON(type == DRM_MODE_OBJECT_FB);
422
ad2563c2 423 mutex_lock(&dev->mode_config.idr_mutex);
f453ba04
DA		 424 obj = idr_find(&dev->mode_config.crtc_idr, id);
425 if (!obj || (obj->type != type) || (obj->id != id))
ad2563c2
JB		 426 obj = NULL;
427 mutex_unlock(&dev->mode_config.idr_mutex);
f453ba04
DA		 428
429 return obj;
430}
431EXPORT_SYMBOL(drm_mode_object_find);
432
f453ba04
DA		 433/**
434 * drm_framebuffer_init - initialize a framebuffer
435 * @dev: DRM device
065a50ed
DV		 436 * @fb: framebuffer to be initialized
437 * @funcs: ... with these functions
f453ba04 438 *
f453ba04
DA		 439 * Allocates an ID for the framebuffer's parent mode object, sets its mode
440 * functions & device file and adds it to the master fd list.
441 *
4b096ac1
DV		 442 * IMPORTANT:
443 * This functions publishes the fb and makes it available for concurrent access
444 * by other users. Which means by this point the fb _must_ be fully set up -
445 * since all the fb attributes are invariant over its lifetime, no further
446 * locking but only correct reference counting is required.
447 *
c8e32cc1 448 * Returns:
af901ca1 449 * Zero on success, error code on failure.
f453ba04
DA		 450 */
451int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
452 const struct drm_framebuffer_funcs *funcs)
453{
454 int ret;
455
4b096ac1 456 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e 457 kref_init(&fb->refcount);
4b096ac1
DV		 458 INIT_LIST_HEAD(&fb->filp_head);
459 fb->dev = dev;
460 fb->funcs = funcs;
f7eff60e 461
f453ba04 462 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
6bfc56aa 463 if (ret)
4b096ac1 464 goto out;
f453ba04 465
2b677e8c
DV		 466 /* Grab the idr reference. */
467 drm_framebuffer_reference(fb);
468
f453ba04
DA		 469 dev->mode_config.num_fb++;
470 list_add(&fb->head, &dev->mode_config.fb_list);
4b096ac1
DV		 471out:
472 mutex_unlock(&dev->mode_config.fb_lock);
f453ba04
DA		 473
474 return 0;
475}
476EXPORT_SYMBOL(drm_framebuffer_init);
477
f7eff60e
RC		 478static void drm_framebuffer_free(struct kref *kref)
479{
480 struct drm_framebuffer *fb =
481 container_of(kref, struct drm_framebuffer, refcount);
482 fb->funcs->destroy(fb);
483}
484
2b677e8c
DV		 485static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev,
486 uint32_t id)
487{
488 struct drm_mode_object *obj = NULL;
489 struct drm_framebuffer *fb;
490
491 mutex_lock(&dev->mode_config.idr_mutex);
492 obj = idr_find(&dev->mode_config.crtc_idr, id);
493 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id))
494 fb = NULL;
495 else
496 fb = obj_to_fb(obj);
497 mutex_unlock(&dev->mode_config.idr_mutex);
498
499 return fb;
500}
501
786b99ed
DV		 502/**
503 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference
504 * @dev: drm device
505 * @id: id of the fb object
506 *
507 * If successful, this grabs an additional reference to the framebuffer -
508 * callers need to make sure to eventually unreference the returned framebuffer
c8e32cc1 509 * again, using @drm_framebuffer_unreference.
786b99ed
DV		 510 */
511struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
512 uint32_t id)
513{
786b99ed
DV		 514 struct drm_framebuffer *fb;
515
516 mutex_lock(&dev->mode_config.fb_lock);
2b677e8c 517 fb = __drm_framebuffer_lookup(dev, id);
786b99ed 518 if (fb)
9131d3d8 519 drm_framebuffer_reference(fb);
786b99ed
DV		 520 mutex_unlock(&dev->mode_config.fb_lock);
521
522 return fb;
523}
524EXPORT_SYMBOL(drm_framebuffer_lookup);
525
f7eff60e
RC		 526/**
527 * drm_framebuffer_unreference - unref a framebuffer
065a50ed
DV		 528 * @fb: framebuffer to unref
529 *
530 * This functions decrements the fb's refcount and frees it if it drops to zero.
f7eff60e
RC		 531 */
532void drm_framebuffer_unreference(struct drm_framebuffer *fb)
533{
f7eff60e 534 DRM_DEBUG("FB ID: %d\n", fb->base.id);
f7eff60e
RC		 535 kref_put(&fb->refcount, drm_framebuffer_free);
536}
537EXPORT_SYMBOL(drm_framebuffer_unreference);
538
539/**
540 * drm_framebuffer_reference - incr the fb refcnt
065a50ed 541 * @fb: framebuffer
c8e32cc1
DV		 542 *
543 * This functions increments the fb's refcount.
f7eff60e
RC		 544 */
545void drm_framebuffer_reference(struct drm_framebuffer *fb)
546{
547 DRM_DEBUG("FB ID: %d\n", fb->base.id);
548 kref_get(&fb->refcount);
549}
550EXPORT_SYMBOL(drm_framebuffer_reference);
551
2b677e8c
DV		 552static void drm_framebuffer_free_bug(struct kref *kref)
553{
554 BUG();
555}
556
6c2a7532
DV		 557static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
558{
559 DRM_DEBUG("FB ID: %d\n", fb->base.id);
560 kref_put(&fb->refcount, drm_framebuffer_free_bug);
561}
562
2b677e8c
DV		 563/* dev->mode_config.fb_lock must be held! */
564static void __drm_framebuffer_unregister(struct drm_device *dev,
565 struct drm_framebuffer *fb)
566{
567 mutex_lock(&dev->mode_config.idr_mutex);
568 idr_remove(&dev->mode_config.crtc_idr, fb->base.id);
569 mutex_unlock(&dev->mode_config.idr_mutex);
570
571 fb->base.id = 0;
572
6c2a7532 573 __drm_framebuffer_unreference(fb);
2b677e8c
DV		 574}
575
36206361
DV		 576/**
577 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
578 * @fb: fb to unregister
579 *
580 * Drivers need to call this when cleaning up driver-private framebuffers, e.g.
581 * those used for fbdev. Note that the caller must hold a reference of it's own,
582 * i.e. the object may not be destroyed through this call (since it'll lead to a
583 * locking inversion).
584 */
585void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
586{
2b677e8c
DV		 587 struct drm_device *dev = fb->dev;
588
589 mutex_lock(&dev->mode_config.fb_lock);
590 /* Mark fb as reaped and drop idr ref. */
591 __drm_framebuffer_unregister(dev, fb);
592 mutex_unlock(&dev->mode_config.fb_lock);
36206361
DV		 593}
594EXPORT_SYMBOL(drm_framebuffer_unregister_private);
595
f453ba04
DA		 596/**
597 * drm_framebuffer_cleanup - remove a framebuffer object
598 * @fb: framebuffer to remove
599 *
c8e32cc1
DV		 600 * Cleanup framebuffer. This function is intended to be used from the drivers
601 * ->destroy callback. It can also be used to clean up driver private
602 * framebuffers embedded into a larger structure.
36206361
DV		 603 *
604 * Note that this function does not remove the fb from active usuage - if it is
605 * still used anywhere, hilarity can ensue since userspace could call getfb on
606 * the id and get back -EINVAL. Obviously no concern at driver unload time.
607 *
608 * Also, the framebuffer will not be removed from the lookup idr - for
609 * user-created framebuffers this will happen in in the rmfb ioctl. For
610 * driver-private objects (e.g. for fbdev) drivers need to explicitly call
611 * drm_framebuffer_unregister_private.
f453ba04
DA		 612 */
613void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
f7eff60e
RC		 614{
615 struct drm_device *dev = fb->dev;
8faf6b18 616
4b096ac1 617 mutex_lock(&dev->mode_config.fb_lock);
f7eff60e
RC		 618 list_del(&fb->head);
619 dev->mode_config.num_fb--;
4b096ac1 620 mutex_unlock(&dev->mode_config.fb_lock);
f7eff60e
RC		 621}
622EXPORT_SYMBOL(drm_framebuffer_cleanup);
623
624/**
625 * drm_framebuffer_remove - remove and unreference a framebuffer object
626 * @fb: framebuffer to remove
627 *
f7eff60e 628 * Scans all the CRTCs and planes in @dev's mode_config. If they're
36206361 629 * using @fb, removes it, setting it to NULL. Then drops the reference to the
b62584e3
DV		 630 * passed-in framebuffer. Might take the modeset locks.
631 *
632 * Note that this function optimizes the cleanup away if the caller holds the
633 * last reference to the framebuffer. It is also guaranteed to not take the
634 * modeset locks in this case.
f7eff60e
RC		 635 */
636void drm_framebuffer_remove(struct drm_framebuffer *fb)
f453ba04
DA		 637{
638 struct drm_device *dev = fb->dev;
639 struct drm_crtc *crtc;
8cf5c917 640 struct drm_plane *plane;
5ef5f72f
DA		 641 struct drm_mode_set set;
642 int ret;
f453ba04 643
4b096ac1 644 WARN_ON(!list_empty(&fb->filp_head));
8faf6b18 645
b62584e3
DV		 646 /*
647 * drm ABI mandates that we remove any deleted framebuffers from active
648 * useage. But since most sane clients only remove framebuffers they no
649 * longer need, try to optimize this away.
650 *
651 * Since we're holding a reference ourselves, observing a refcount of 1
652 * means that we're the last holder and can skip it. Also, the refcount
653 * can never increase from 1 again, so we don't need any barriers or
654 * locks.
655 *
656 * Note that userspace could try to race with use and instate a new
657 * usage _after_ we've cleared all current ones. End result will be an
658 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot
659 * in this manner.
660 */
661 if (atomic_read(&fb->refcount.refcount) > 1) {
662 drm_modeset_lock_all(dev);
663 /* remove from any CRTC */
664 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
665 if (crtc->fb == fb) {
666 /* should turn off the crtc */
667 memset(&set, 0, sizeof(struct drm_mode_set));
668 set.crtc = crtc;
669 set.fb = NULL;
670 ret = drm_mode_set_config_internal(&set);
671 if (ret)
672 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
673 }
5ef5f72f 674 }
f453ba04 675
b62584e3 676 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
9125e618
VS		 677 if (plane->fb == fb)
678 drm_plane_force_disable(plane);
8cf5c917 679 }
b62584e3 680 drm_modeset_unlock_all(dev);
8cf5c917
JB		 681 }
682
f7eff60e 683 drm_framebuffer_unreference(fb);
f453ba04 684}
f7eff60e 685EXPORT_SYMBOL(drm_framebuffer_remove);
f453ba04
DA		 686
687/**
688 * drm_crtc_init - Initialise a new CRTC object
689 * @dev: DRM device
690 * @crtc: CRTC object to init
691 * @funcs: callbacks for the new CRTC
692 *
ad6f5c34 693 * Inits a new object created as base part of a driver crtc object.
6bfc56aa 694 *
c8e32cc1 695 * Returns:
6bfc56aa 696 * Zero on success, error code on failure.
f453ba04 697 */
6bfc56aa 698int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
f453ba04
DA		 699 const struct drm_crtc_funcs *funcs)
700{
6bfc56aa
VS		 701 int ret;
702
f453ba04
DA		 703 crtc->dev = dev;
704 crtc->funcs = funcs;
7c80e128 705 crtc->invert_dimensions = false;
f453ba04 706
84849903 707 drm_modeset_lock_all(dev);
29494c17
DV		 708 mutex_init(&crtc->mutex);
709 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex);
6bfc56aa
VS		 710
711 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
712 if (ret)
713 goto out;
f453ba04 714
bffd9de0
PZ		 715 crtc->base.properties = &crtc->properties;
716
f453ba04
DA		 717 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
718 dev->mode_config.num_crtc++;
6bfc56aa
VS		 719
720 out:
84849903 721 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 722
723 return ret;
f453ba04
DA		 724}
725EXPORT_SYMBOL(drm_crtc_init);
726
727/**
ad6f5c34 728 * drm_crtc_cleanup - Clean up the core crtc usage
f453ba04
DA		 729 * @crtc: CRTC to cleanup
730 *
ad6f5c34
VS		 731 * This function cleans up @crtc and removes it from the DRM mode setting
732 * core. Note that the function does *not* free the crtc structure itself,
733 * this is the responsibility of the caller.
f453ba04
DA		 734 */
735void drm_crtc_cleanup(struct drm_crtc *crtc)
736{
737 struct drm_device *dev = crtc->dev;
738
9e1c156f
SK		 739 kfree(crtc->gamma_store);
740 crtc->gamma_store = NULL;
f453ba04
DA		 741
742 drm_mode_object_put(dev, &crtc->base);
743 list_del(&crtc->head);
744 dev->mode_config.num_crtc--;
745}
746EXPORT_SYMBOL(drm_crtc_cleanup);
747
db5f7a6e
RK		 748/**
749 * drm_crtc_index - find the index of a registered CRTC
750 * @crtc: CRTC to find index for
751 *
752 * Given a registered CRTC, return the index of that CRTC within a DRM
753 * device's list of CRTCs.
754 */
755unsigned int drm_crtc_index(struct drm_crtc *crtc)
756{
757 unsigned int index = 0;
758 struct drm_crtc *tmp;
759
760 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
761 if (tmp == crtc)
762 return index;
763
764 index++;
765 }
766
767 BUG();
768}
769EXPORT_SYMBOL(drm_crtc_index);
770
86f422d5 771/*
f453ba04
DA		 772 * drm_mode_remove - remove and free a mode
773 * @connector: connector list to modify
774 * @mode: mode to remove
775 *
f453ba04
DA		 776 * Remove @mode from @connector's mode list, then free it.
777 */
86f422d5
LD		 778static void drm_mode_remove(struct drm_connector *connector,
779 struct drm_display_mode *mode)
f453ba04
DA		 780{
781 list_del(&mode->head);
554f1d78 782 drm_mode_destroy(connector->dev, mode);
f453ba04 783}
f453ba04
DA		 784
785/**
786 * drm_connector_init - Init a preallocated connector
787 * @dev: DRM device
788 * @connector: the connector to init
789 * @funcs: callbacks for this connector
065a50ed 790 * @connector_type: user visible type of the connector
f453ba04 791 *
f453ba04
DA		 792 * Initialises a preallocated connector. Connectors should be
793 * subclassed as part of driver connector objects.
6bfc56aa 794 *
c8e32cc1 795 * Returns:
6bfc56aa 796 * Zero on success, error code on failure.
f453ba04 797 */
6bfc56aa
VS		 798int drm_connector_init(struct drm_device *dev,
799 struct drm_connector *connector,
800 const struct drm_connector_funcs *funcs,
801 int connector_type)
f453ba04 802{
6bfc56aa 803 int ret;
b21e3afe
IM		 804 struct ida *connector_ida =
805 &drm_connector_enum_list[connector_type].ida;
6bfc56aa 806
84849903 807 drm_modeset_lock_all(dev);
f453ba04 808
6bfc56aa
VS		 809 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
810 if (ret)
811 goto out;
812
7e3bdf4a 813 connector->base.properties = &connector->properties;
f453ba04
DA		 814 connector->dev = dev;
815 connector->funcs = funcs;
f453ba04
DA		 816 connector->connector_type = connector_type;
817 connector->connector_type_id =
b21e3afe
IM		 818 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
819 if (connector->connector_type_id < 0) {
820 ret = connector->connector_type_id;
821 drm_mode_object_put(dev, &connector->base);
822 goto out;
823 }
f453ba04
DA		 824 INIT_LIST_HEAD(&connector->probed_modes);
825 INIT_LIST_HEAD(&connector->modes);
826 connector->edid_blob_ptr = NULL;
5e2cb2f6 827 connector->status = connector_status_unknown;
f453ba04
DA		 828
829 list_add_tail(&connector->head, &dev->mode_config.connector_list);
830 dev->mode_config.num_connector++;
831
a7331e5c 832 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
58495563 833 drm_object_attach_property(&connector->base,
a7331e5c
TH		 834 dev->mode_config.edid_property,
835 0);
f453ba04 836
58495563 837 drm_object_attach_property(&connector->base,
f453ba04
DA		 838 dev->mode_config.dpms_property, 0);
839
6bfc56aa 840 out:
84849903 841 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 842
843 return ret;
f453ba04
DA		 844}
845EXPORT_SYMBOL(drm_connector_init);
846
847/**
848 * drm_connector_cleanup - cleans up an initialised connector
849 * @connector: connector to cleanup
850 *
f453ba04
DA		 851 * Cleans up the connector but doesn't free the object.
852 */
853void drm_connector_cleanup(struct drm_connector *connector)
854{
855 struct drm_device *dev = connector->dev;
856 struct drm_display_mode *mode, *t;
857
858 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
859 drm_mode_remove(connector, mode);
860
861 list_for_each_entry_safe(mode, t, &connector->modes, head)
862 drm_mode_remove(connector, mode);
863
b21e3afe
IM		 864 ida_remove(&drm_connector_enum_list[connector->connector_type].ida,
865 connector->connector_type_id);
866
f453ba04
DA		 867 drm_mode_object_put(dev, &connector->base);
868 list_del(&connector->head);
6380c509 869 dev->mode_config.num_connector--;
f453ba04
DA		 870}
871EXPORT_SYMBOL(drm_connector_cleanup);
872
c8e32cc1
DV		 873/**
874 * drm_connector_unplug_all - unregister connector userspace interfaces
875 * @dev: drm device
876 *
877 * This function unregisters all connector userspace interfaces in sysfs. Should
878 * be call when the device is disconnected, e.g. from an usb driver's
879 * ->disconnect callback.
880 */
cbc7e221
DA		 881void drm_connector_unplug_all(struct drm_device *dev)
882{
883 struct drm_connector *connector;
884
885 /* taking the mode config mutex ends up in a clash with sysfs */
886 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
887 drm_sysfs_connector_remove(connector);
888
889}
890EXPORT_SYMBOL(drm_connector_unplug_all);
891
c8e32cc1
DV		 892/**
893 * drm_bridge_init - initialize a drm transcoder/bridge
894 * @dev: drm device
895 * @bridge: transcoder/bridge to set up
896 * @funcs: bridge function table
897 *
898 * Initialises a preallocated bridge. Bridges should be
899 * subclassed as part of driver connector objects.
900 *
901 * Returns:
902 * Zero on success, error code on failure.
903 */
3b336ec4
SP		 904int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge,
905 const struct drm_bridge_funcs *funcs)
906{
907 int ret;
908
909 drm_modeset_lock_all(dev);
910
911 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE);
912 if (ret)
913 goto out;
914
915 bridge->dev = dev;
916 bridge->funcs = funcs;
917
918 list_add_tail(&bridge->head, &dev->mode_config.bridge_list);
919 dev->mode_config.num_bridge++;
920
921 out:
922 drm_modeset_unlock_all(dev);
923 return ret;
924}
925EXPORT_SYMBOL(drm_bridge_init);
926
c8e32cc1
DV		 927/**
928 * drm_bridge_cleanup - cleans up an initialised bridge
929 * @bridge: bridge to cleanup
930 *
931 * Cleans up the bridge but doesn't free the object.
932 */
3b336ec4
SP		 933void drm_bridge_cleanup(struct drm_bridge *bridge)
934{
935 struct drm_device *dev = bridge->dev;
936
937 drm_modeset_lock_all(dev);
938 drm_mode_object_put(dev, &bridge->base);
939 list_del(&bridge->head);
940 dev->mode_config.num_bridge--;
941 drm_modeset_unlock_all(dev);
942}
943EXPORT_SYMBOL(drm_bridge_cleanup);
944
c8e32cc1
DV		 945/**
946 * drm_encoder_init - Init a preallocated encoder
947 * @dev: drm device
948 * @encoder: the encoder to init
949 * @funcs: callbacks for this encoder
950 * @encoder_type: user visible type of the encoder
951 *
952 * Initialises a preallocated encoder. Encoder should be
953 * subclassed as part of driver encoder objects.
954 *
955 * Returns:
956 * Zero on success, error code on failure.
957 */
6bfc56aa 958int drm_encoder_init(struct drm_device *dev,
cbc7e221
DA		 959 struct drm_encoder *encoder,
960 const struct drm_encoder_funcs *funcs,
961 int encoder_type)
f453ba04 962{
6bfc56aa
VS		 963 int ret;
964
84849903 965 drm_modeset_lock_all(dev);
f453ba04 966
6bfc56aa
VS		 967 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
968 if (ret)
969 goto out;
f453ba04 970
6bfc56aa 971 encoder->dev = dev;
f453ba04
DA		 972 encoder->encoder_type = encoder_type;
973 encoder->funcs = funcs;
974
975 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
976 dev->mode_config.num_encoder++;
977
6bfc56aa 978 out:
84849903 979 drm_modeset_unlock_all(dev);
6bfc56aa
VS		 980
981 return ret;
f453ba04
DA		 982}
983EXPORT_SYMBOL(drm_encoder_init);
984
c8e32cc1
DV		 985/**
986 * drm_encoder_cleanup - cleans up an initialised encoder
987 * @encoder: encoder to cleanup
988 *
989 * Cleans up the encoder but doesn't free the object.
990 */
f453ba04
DA		 991void drm_encoder_cleanup(struct drm_encoder *encoder)
992{
993 struct drm_device *dev = encoder->dev;
84849903 994 drm_modeset_lock_all(dev);
f453ba04
DA		 995 drm_mode_object_put(dev, &encoder->base);
996 list_del(&encoder->head);
6380c509 997 dev->mode_config.num_encoder--;
84849903 998 drm_modeset_unlock_all(dev);
f453ba04
DA		 999}
1000EXPORT_SYMBOL(drm_encoder_cleanup);
1001
35f2c3ae
VS		 1002/**
1003 * drm_plane_init - Initialise a new plane object
1004 * @dev: DRM device
1005 * @plane: plane object to init
1006 * @possible_crtcs: bitmask of possible CRTCs
1007 * @funcs: callbacks for the new plane
1008 * @formats: array of supported formats (%DRM_FORMAT_*)
1009 * @format_count: number of elements in @formats
1010 * @priv: plane is private (hidden from userspace)?
1011 *
c8e32cc1
DV		 1012 * Inits a preallocate plane object created as base part of a driver plane
1013 * object.
35f2c3ae 1014 *
c8e32cc1 1015 * Returns:
35f2c3ae
VS		 1016 * Zero on success, error code on failure.
1017 */
8cf5c917
JB		 1018int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
1019 unsigned long possible_crtcs,
1020 const struct drm_plane_funcs *funcs,
0a7eb243
RC		 1021 const uint32_t *formats, uint32_t format_count,
1022 bool priv)
8cf5c917 1023{
6bfc56aa
VS		 1024 int ret;
1025
84849903 1026 drm_modeset_lock_all(dev);
8cf5c917 1027
6bfc56aa
VS		 1028 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
1029 if (ret)
1030 goto out;
1031
4d93914a 1032 plane->base.properties = &plane->properties;
8cf5c917 1033 plane->dev = dev;
8cf5c917
JB		 1034 plane->funcs = funcs;
1035 plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
1036 GFP_KERNEL);
1037 if (!plane->format_types) {
1038 DRM_DEBUG_KMS("out of memory when allocating plane\n");
1039 drm_mode_object_put(dev, &plane->base);
6bfc56aa
VS		 1040 ret = -ENOMEM;
1041 goto out;
8cf5c917
JB		 1042 }
1043
308e5bcb 1044 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
8cf5c917
JB		 1045 plane->format_count = format_count;
1046 plane->possible_crtcs = possible_crtcs;
1047
0a7eb243
RC		 1048 /* private planes are not exposed to userspace, but depending on
1049 * display hardware, might be convenient to allow sharing programming
1050 * for the scanout engine with the crtc implementation.
1051 */
1052 if (!priv) {
1053 list_add_tail(&plane->head, &dev->mode_config.plane_list);
1054 dev->mode_config.num_plane++;
1055 } else {
1056 INIT_LIST_HEAD(&plane->head);
1057 }
8cf5c917 1058
6bfc56aa 1059 out:
84849903 1060 drm_modeset_unlock_all(dev);
8cf5c917 1061
6bfc56aa 1062 return ret;
8cf5c917
JB		 1063}
1064EXPORT_SYMBOL(drm_plane_init);
1065
35f2c3ae
VS		 1066/**
1067 * drm_plane_cleanup - Clean up the core plane usage
1068 * @plane: plane to cleanup
1069 *
1070 * This function cleans up @plane and removes it from the DRM mode setting
1071 * core. Note that the function does *not* free the plane structure itself,
1072 * this is the responsibility of the caller.
1073 */
8cf5c917
JB		 1074void drm_plane_cleanup(struct drm_plane *plane)
1075{
1076 struct drm_device *dev = plane->dev;
1077
84849903 1078 drm_modeset_lock_all(dev);
8cf5c917
JB		 1079 kfree(plane->format_types);
1080 drm_mode_object_put(dev, &plane->base);
0a7eb243
RC		 1081 /* if not added to a list, it must be a private plane */
1082 if (!list_empty(&plane->head)) {
1083 list_del(&plane->head);
1084 dev->mode_config.num_plane--;
1085 }
84849903 1086 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1087}
1088EXPORT_SYMBOL(drm_plane_cleanup);
1089
35f2c3ae
VS		 1090/**
1091 * drm_plane_force_disable - Forcibly disable a plane
1092 * @plane: plane to disable
1093 *
1094 * Forces the plane to be disabled.
1095 *
1096 * Used when the plane's current framebuffer is destroyed,
1097 * and when restoring fbdev mode.
1098 */
9125e618
VS		 1099void drm_plane_force_disable(struct drm_plane *plane)
1100{
1101 int ret;
1102
1103 if (!plane->fb)
1104 return;
1105
1106 ret = plane->funcs->disable_plane(plane);
1107 if (ret)
1108 DRM_ERROR("failed to disable plane with busy fb\n");
1109 /* disconnect the plane from the fb and crtc: */
1110 __drm_framebuffer_unreference(plane->fb);
1111 plane->fb = NULL;
1112 plane->crtc = NULL;
1113}
1114EXPORT_SYMBOL(drm_plane_force_disable);
1115
f453ba04
DA		 1116static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
1117{
1118 struct drm_property *edid;
1119 struct drm_property *dpms;
f453ba04
DA		 1120
1121 /*
1122 * Standard properties (apply to all connectors)
1123 */
1124 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
1125 DRM_MODE_PROP_IMMUTABLE,
1126 "EDID", 0);
1127 dev->mode_config.edid_property = edid;
1128
4a67d391
SH		 1129 dpms = drm_property_create_enum(dev, 0,
1130 "DPMS", drm_dpms_enum_list,
1131 ARRAY_SIZE(drm_dpms_enum_list));
f453ba04
DA		 1132 dev->mode_config.dpms_property = dpms;
1133
1134 return 0;
1135}
1136
1137/**
1138 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
1139 * @dev: DRM device
1140 *
1141 * Called by a driver the first time a DVI-I connector is made.
1142 */
1143int drm_mode_create_dvi_i_properties(struct drm_device *dev)
1144{
1145 struct drm_property *dvi_i_selector;
1146 struct drm_property *dvi_i_subconnector;
f453ba04
DA		 1147
1148 if (dev->mode_config.dvi_i_select_subconnector_property)
1149 return 0;
1150
1151 dvi_i_selector =
4a67d391 1152 drm_property_create_enum(dev, 0,
f453ba04 1153 "select subconnector",
4a67d391 1154 drm_dvi_i_select_enum_list,
f453ba04 1155 ARRAY_SIZE(drm_dvi_i_select_enum_list));
f453ba04
DA		 1156 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
1157
4a67d391 1158 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
f453ba04 1159 "subconnector",
4a67d391 1160 drm_dvi_i_subconnector_enum_list,
f453ba04 1161 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
f453ba04
DA		 1162 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
1163
1164 return 0;
1165}
1166EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
1167
1168/**
1169 * drm_create_tv_properties - create TV specific connector properties
1170 * @dev: DRM device
1171 * @num_modes: number of different TV formats (modes) supported
1172 * @modes: array of pointers to strings containing name of each format
1173 *
1174 * Called by a driver's TV initialization routine, this function creates
1175 * the TV specific connector properties for a given device. Caller is
1176 * responsible for allocating a list of format names and passing them to
1177 * this routine.
1178 */
1179int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
1180 char *modes[])
1181{
1182 struct drm_property *tv_selector;
1183 struct drm_property *tv_subconnector;
1184 int i;
1185
1186 if (dev->mode_config.tv_select_subconnector_property)
1187 return 0;
1188
1189 /*
1190 * Basic connector properties
1191 */
4a67d391 1192 tv_selector = drm_property_create_enum(dev, 0,
f453ba04 1193 "select subconnector",
4a67d391 1194 drm_tv_select_enum_list,
f453ba04 1195 ARRAY_SIZE(drm_tv_select_enum_list));
f453ba04
DA		 1196 dev->mode_config.tv_select_subconnector_property = tv_selector;
1197
1198 tv_subconnector =
4a67d391
SH		 1199 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
1200 "subconnector",
1201 drm_tv_subconnector_enum_list,
f453ba04 1202 ARRAY_SIZE(drm_tv_subconnector_enum_list));
f453ba04
DA		 1203 dev->mode_config.tv_subconnector_property = tv_subconnector;
1204
1205 /*
1206 * Other, TV specific properties: margins & TV modes.
1207 */
1208 dev->mode_config.tv_left_margin_property =
d9bc3c02 1209 drm_property_create_range(dev, 0, "left margin", 0, 100);
f453ba04
DA		 1210
1211 dev->mode_config.tv_right_margin_property =
d9bc3c02 1212 drm_property_create_range(dev, 0, "right margin", 0, 100);
f453ba04
DA		 1213
1214 dev->mode_config.tv_top_margin_property =
d9bc3c02 1215 drm_property_create_range(dev, 0, "top margin", 0, 100);
f453ba04
DA		 1216
1217 dev->mode_config.tv_bottom_margin_property =
d9bc3c02 1218 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
f453ba04
DA		 1219
1220 dev->mode_config.tv_mode_property =
1221 drm_property_create(dev, DRM_MODE_PROP_ENUM,
1222 "mode", num_modes);
1223 for (i = 0; i < num_modes; i++)
1224 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
1225 i, modes[i]);
1226
b6b7902e 1227 dev->mode_config.tv_brightness_property =
d9bc3c02 1228 drm_property_create_range(dev, 0, "brightness", 0, 100);
b6b7902e
FJ		 1229
1230 dev->mode_config.tv_contrast_property =
d9bc3c02 1231 drm_property_create_range(dev, 0, "contrast", 0, 100);
b6b7902e
FJ		 1232
1233 dev->mode_config.tv_flicker_reduction_property =
d9bc3c02 1234 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
b6b7902e 1235
a75f0236 1236 dev->mode_config.tv_overscan_property =
d9bc3c02 1237 drm_property_create_range(dev, 0, "overscan", 0, 100);
a75f0236
FJ		 1238
1239 dev->mode_config.tv_saturation_property =
d9bc3c02 1240 drm_property_create_range(dev, 0, "saturation", 0, 100);
a75f0236
FJ		 1241
1242 dev->mode_config.tv_hue_property =
d9bc3c02 1243 drm_property_create_range(dev, 0, "hue", 0, 100);
a75f0236 1244
f453ba04
DA		 1245 return 0;
1246}
1247EXPORT_SYMBOL(drm_mode_create_tv_properties);
1248
1249/**
1250 * drm_mode_create_scaling_mode_property - create scaling mode property
1251 * @dev: DRM device
1252 *
1253 * Called by a driver the first time it's needed, must be attached to desired
1254 * connectors.
1255 */
1256int drm_mode_create_scaling_mode_property(struct drm_device *dev)
1257{
1258 struct drm_property *scaling_mode;
f453ba04
DA		 1259
1260 if (dev->mode_config.scaling_mode_property)
1261 return 0;
1262
1263 scaling_mode =
4a67d391
SH		 1264 drm_property_create_enum(dev, 0, "scaling mode",
1265 drm_scaling_mode_enum_list,
f453ba04 1266 ARRAY_SIZE(drm_scaling_mode_enum_list));
f453ba04
DA		 1267
1268 dev->mode_config.scaling_mode_property = scaling_mode;
1269
1270 return 0;
1271}
1272EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
1273
884840aa
JB		 1274/**
1275 * drm_mode_create_dirty_property - create dirty property
1276 * @dev: DRM device
1277 *
1278 * Called by a driver the first time it's needed, must be attached to desired
1279 * connectors.
1280 */
1281int drm_mode_create_dirty_info_property(struct drm_device *dev)
1282{
1283 struct drm_property *dirty_info;
884840aa
JB		 1284
1285 if (dev->mode_config.dirty_info_property)
1286 return 0;
1287
1288 dirty_info =
4a67d391 1289 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
884840aa 1290 "dirty",
4a67d391 1291 drm_dirty_info_enum_list,
884840aa 1292 ARRAY_SIZE(drm_dirty_info_enum_list));
884840aa
JB		 1293 dev->mode_config.dirty_info_property = dirty_info;
1294
1295 return 0;
1296}
1297EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
1298
ea9cbb06 1299static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
f453ba04
DA		 1300{
1301 uint32_t total_objects = 0;
1302
1303 total_objects += dev->mode_config.num_crtc;
1304 total_objects += dev->mode_config.num_connector;
1305 total_objects += dev->mode_config.num_encoder;
3b336ec4 1306 total_objects += dev->mode_config.num_bridge;
f453ba04 1307
f453ba04
DA		 1308 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
1309 if (!group->id_list)
1310 return -ENOMEM;
1311
1312 group->num_crtcs = 0;
1313 group->num_connectors = 0;
1314 group->num_encoders = 0;
3b336ec4 1315 group->num_bridges = 0;
f453ba04
DA		 1316 return 0;
1317}
1318
c8e32cc1
DV		 1319/*
1320 * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is
1321 * the drm core's responsibility to set up mode control groups.
1322 */
f453ba04
DA		 1323int drm_mode_group_init_legacy_group(struct drm_device *dev,
1324 struct drm_mode_group *group)
1325{
1326 struct drm_crtc *crtc;
1327 struct drm_encoder *encoder;
1328 struct drm_connector *connector;
3b336ec4 1329 struct drm_bridge *bridge;
f453ba04
DA		 1330 int ret;
1331
1332 if ((ret = drm_mode_group_init(dev, group)))
1333 return ret;
1334
1335 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1336 group->id_list[group->num_crtcs++] = crtc->base.id;
1337
1338 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1339 group->id_list[group->num_crtcs + group->num_encoders++] =
1340 encoder->base.id;
1341
1342 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1343 group->id_list[group->num_crtcs + group->num_encoders +
1344 group->num_connectors++] = connector->base.id;
1345
3b336ec4
SP		 1346 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head)
1347 group->id_list[group->num_crtcs + group->num_encoders +
1348 group->num_connectors + group->num_bridges++] =
1349 bridge->base.id;
1350
f453ba04
DA		 1351 return 0;
1352}
9c1dfc55 1353EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
f453ba04 1354
f453ba04
DA		 1355/**
1356 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1357 * @out: drm_mode_modeinfo struct to return to the user
1358 * @in: drm_display_mode to use
1359 *
f453ba04
DA		 1360 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1361 * the user.
1362 */
93bbf6db
VS		 1363static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1364 const struct drm_display_mode *in)
f453ba04 1365{
e36fae38
VS		 1366 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1367 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1368 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1369 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1370 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX,
1371 "timing values too large for mode info\n");
1372
f453ba04
DA		 1373 out->clock = in->clock;
1374 out->hdisplay = in->hdisplay;
1375 out->hsync_start = in->hsync_start;
1376 out->hsync_end = in->hsync_end;
1377 out->htotal = in->htotal;
1378 out->hskew = in->hskew;
1379 out->vdisplay = in->vdisplay;
1380 out->vsync_start = in->vsync_start;
1381 out->vsync_end = in->vsync_end;
1382 out->vtotal = in->vtotal;
1383 out->vscan = in->vscan;
1384 out->vrefresh = in->vrefresh;
1385 out->flags = in->flags;
1386 out->type = in->type;
1387 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1388 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1389}
1390
1391/**
74afee7d 1392 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode
f453ba04
DA		 1393 * @out: drm_display_mode to return to the user
1394 * @in: drm_mode_modeinfo to use
1395 *
f453ba04
DA		 1396 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1397 * the caller.
90367bf6 1398 *
c8e32cc1 1399 * Returns:
90367bf6 1400 * Zero on success, errno on failure.
f453ba04 1401 */
93bbf6db
VS		 1402static int drm_crtc_convert_umode(struct drm_display_mode *out,
1403 const struct drm_mode_modeinfo *in)
f453ba04 1404{
90367bf6
VS		 1405 if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1406 return -ERANGE;
1407
5848ad40
DL		 1408 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX)
1409 return -EINVAL;
1410
f453ba04
DA		 1411 out->clock = in->clock;
1412 out->hdisplay = in->hdisplay;
1413 out->hsync_start = in->hsync_start;
1414 out->hsync_end = in->hsync_end;
1415 out->htotal = in->htotal;
1416 out->hskew = in->hskew;
1417 out->vdisplay = in->vdisplay;
1418 out->vsync_start = in->vsync_start;
1419 out->vsync_end = in->vsync_end;
1420 out->vtotal = in->vtotal;
1421 out->vscan = in->vscan;
1422 out->vrefresh = in->vrefresh;
1423 out->flags = in->flags;
1424 out->type = in->type;
1425 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1426 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
90367bf6
VS		 1427
1428 return 0;
f453ba04
DA		 1429}
1430
1431/**
1432 * drm_mode_getresources - get graphics configuration
065a50ed
DV		 1433 * @dev: drm device for the ioctl
1434 * @data: data pointer for the ioctl
1435 * @file_priv: drm file for the ioctl call
f453ba04 1436 *
f453ba04
DA		 1437 * Construct a set of configuration description structures and return
1438 * them to the user, including CRTC, connector and framebuffer configuration.
1439 *
1440 * Called by the user via ioctl.
1441 *
c8e32cc1 1442 * Returns:
f453ba04
DA		 1443 * Zero on success, errno on failure.
1444 */
1445int drm_mode_getresources(struct drm_device *dev, void *data,
1446 struct drm_file *file_priv)
1447{
1448 struct drm_mode_card_res *card_res = data;
1449 struct list_head *lh;
1450 struct drm_framebuffer *fb;
1451 struct drm_connector *connector;
1452 struct drm_crtc *crtc;
1453 struct drm_encoder *encoder;
1454 int ret = 0;
1455 int connector_count = 0;
1456 int crtc_count = 0;
1457 int fb_count = 0;
1458 int encoder_count = 0;
1459 int copied = 0, i;
1460 uint32_t __user *fb_id;
1461 uint32_t __user *crtc_id;
1462 uint32_t __user *connector_id;
1463 uint32_t __user *encoder_id;
1464 struct drm_mode_group *mode_group;
1465
fb3b06c8
DA		 1466 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1467 return -EINVAL;
1468
f453ba04 1469
4b096ac1 1470 mutex_lock(&file_priv->fbs_lock);
f453ba04
DA		 1471 /*
1472 * For the non-control nodes we need to limit the list of resources
1473 * by IDs in the group list for this node
1474 */
1475 list_for_each(lh, &file_priv->fbs)
1476 fb_count++;
1477
4b096ac1
DV		 1478 /* handle this in 4 parts */
1479 /* FBs */
1480 if (card_res->count_fbs >= fb_count) {
1481 copied = 0;
1482 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1483 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1484 if (put_user(fb->base.id, fb_id + copied)) {
1485 mutex_unlock(&file_priv->fbs_lock);
1486 return -EFAULT;
1487 }
1488 copied++;
1489 }
1490 }
1491 card_res->count_fbs = fb_count;
1492 mutex_unlock(&file_priv->fbs_lock);
1493
1494 drm_modeset_lock_all(dev);
43683057 1495 if (!drm_is_primary_client(file_priv)) {
f453ba04 1496
09f308f7 1497 mode_group = NULL;
f453ba04
DA		 1498 list_for_each(lh, &dev->mode_config.crtc_list)
1499 crtc_count++;
1500
1501 list_for_each(lh, &dev->mode_config.connector_list)
1502 connector_count++;
1503
1504 list_for_each(lh, &dev->mode_config.encoder_list)
1505 encoder_count++;
1506 } else {
1507
09f308f7 1508 mode_group = &file_priv->master->minor->mode_group;
f453ba04
DA		 1509 crtc_count = mode_group->num_crtcs;
1510 connector_count = mode_group->num_connectors;
1511 encoder_count = mode_group->num_encoders;
1512 }
1513
1514 card_res->max_height = dev->mode_config.max_height;
1515 card_res->min_height = dev->mode_config.min_height;
1516 card_res->max_width = dev->mode_config.max_width;
1517 card_res->min_width = dev->mode_config.min_width;
1518
f453ba04
DA		 1519 /* CRTCs */
1520 if (card_res->count_crtcs >= crtc_count) {
1521 copied = 0;
1522 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
09f308f7 1523 if (!mode_group) {
f453ba04
DA		 1524 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1525 head) {
9440106b 1526 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 1527 if (put_user(crtc->base.id, crtc_id + copied)) {
1528 ret = -EFAULT;
1529 goto out;
1530 }
1531 copied++;
1532 }
1533 } else {
1534 for (i = 0; i < mode_group->num_crtcs; i++) {
1535 if (put_user(mode_group->id_list[i],
1536 crtc_id + copied)) {
1537 ret = -EFAULT;
1538 goto out;
1539 }
1540 copied++;
1541 }
1542 }
1543 }
1544 card_res->count_crtcs = crtc_count;
1545
1546 /* Encoders */
1547 if (card_res->count_encoders >= encoder_count) {
1548 copied = 0;
1549 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
09f308f7 1550 if (!mode_group) {
f453ba04
DA		 1551 list_for_each_entry(encoder,
1552 &dev->mode_config.encoder_list,
1553 head) {
9440106b
JG		 1554 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1555 drm_get_encoder_name(encoder));
f453ba04
DA		 1556 if (put_user(encoder->base.id, encoder_id +
1557 copied)) {
1558 ret = -EFAULT;
1559 goto out;
1560 }
1561 copied++;
1562 }
1563 } else {
1564 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1565 if (put_user(mode_group->id_list[i],
1566 encoder_id + copied)) {
1567 ret = -EFAULT;
1568 goto out;
1569 }
1570 copied++;
1571 }
1572
1573 }
1574 }
1575 card_res->count_encoders = encoder_count;
1576
1577 /* Connectors */
1578 if (card_res->count_connectors >= connector_count) {
1579 copied = 0;
1580 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
09f308f7 1581 if (!mode_group) {
f453ba04
DA		 1582 list_for_each_entry(connector,
1583 &dev->mode_config.connector_list,
1584 head) {
9440106b
JG		 1585 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1586 connector->base.id,
1587 drm_get_connector_name(connector));
f453ba04
DA		 1588 if (put_user(connector->base.id,
1589 connector_id + copied)) {
1590 ret = -EFAULT;
1591 goto out;
1592 }
1593 copied++;
1594 }
1595 } else {
1596 int start = mode_group->num_crtcs +
1597 mode_group->num_encoders;
1598 for (i = start; i < start + mode_group->num_connectors; i++) {
1599 if (put_user(mode_group->id_list[i],
1600 connector_id + copied)) {
1601 ret = -EFAULT;
1602 goto out;
1603 }
1604 copied++;
1605 }
1606 }
1607 }
1608 card_res->count_connectors = connector_count;
1609
9440106b 1610 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
f453ba04
DA		 1611 card_res->count_connectors, card_res->count_encoders);
1612
1613out:
84849903 1614 drm_modeset_unlock_all(dev);
f453ba04
DA		 1615 return ret;
1616}
1617
1618/**
1619 * drm_mode_getcrtc - get CRTC configuration
065a50ed
DV		 1620 * @dev: drm device for the ioctl
1621 * @data: data pointer for the ioctl
1622 * @file_priv: drm file for the ioctl call
f453ba04 1623 *
f453ba04
DA		 1624 * Construct a CRTC configuration structure to return to the user.
1625 *
1626 * Called by the user via ioctl.
1627 *
c8e32cc1 1628 * Returns:
f453ba04
DA		 1629 * Zero on success, errno on failure.
1630 */
1631int drm_mode_getcrtc(struct drm_device *dev,
1632 void *data, struct drm_file *file_priv)
1633{
1634 struct drm_mode_crtc *crtc_resp = data;
1635 struct drm_crtc *crtc;
1636 struct drm_mode_object *obj;
1637 int ret = 0;
1638
fb3b06c8
DA		 1639 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1640 return -EINVAL;
1641
84849903 1642 drm_modeset_lock_all(dev);
f453ba04
DA		 1643
1644 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1645 DRM_MODE_OBJECT_CRTC);
1646 if (!obj) {
f27657f2 1647 ret = -ENOENT;
f453ba04
DA		 1648 goto out;
1649 }
1650 crtc = obj_to_crtc(obj);
1651
1652 crtc_resp->x = crtc->x;
1653 crtc_resp->y = crtc->y;
1654 crtc_resp->gamma_size = crtc->gamma_size;
1655 if (crtc->fb)
1656 crtc_resp->fb_id = crtc->fb->base.id;
1657 else
1658 crtc_resp->fb_id = 0;
1659
1660 if (crtc->enabled) {
1661
1662 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1663 crtc_resp->mode_valid = 1;
1664
1665 } else {
1666 crtc_resp->mode_valid = 0;
1667 }
1668
1669out:
84849903 1670 drm_modeset_unlock_all(dev);
f453ba04
DA		 1671 return ret;
1672}
1673
61d8e328
DL		 1674static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
1675 const struct drm_file *file_priv)
1676{
1677 /*
1678 * If user-space hasn't configured the driver to expose the stereo 3D
1679 * modes, don't expose them.
1680 */
1681 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
1682 return false;
1683
1684 return true;
1685}
1686
f453ba04
DA		 1687/**
1688 * drm_mode_getconnector - get connector configuration
065a50ed
DV		 1689 * @dev: drm device for the ioctl
1690 * @data: data pointer for the ioctl
1691 * @file_priv: drm file for the ioctl call
f453ba04 1692 *
f453ba04
DA		 1693 * Construct a connector configuration structure to return to the user.
1694 *
1695 * Called by the user via ioctl.
1696 *
c8e32cc1 1697 * Returns:
f453ba04
DA		 1698 * Zero on success, errno on failure.
1699 */
1700int drm_mode_getconnector(struct drm_device *dev, void *data,
1701 struct drm_file *file_priv)
1702{
1703 struct drm_mode_get_connector *out_resp = data;
1704 struct drm_mode_object *obj;
1705 struct drm_connector *connector;
1706 struct drm_display_mode *mode;
1707 int mode_count = 0;
1708 int props_count = 0;
1709 int encoders_count = 0;
1710 int ret = 0;
1711 int copied = 0;
1712 int i;
1713 struct drm_mode_modeinfo u_mode;
1714 struct drm_mode_modeinfo __user *mode_ptr;
1715 uint32_t __user *prop_ptr;
1716 uint64_t __user *prop_values;
1717 uint32_t __user *encoder_ptr;
1718
fb3b06c8
DA		 1719 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1720 return -EINVAL;
1721
f453ba04
DA		 1722 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1723
9440106b 1724 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
f453ba04 1725
7b24056b 1726 mutex_lock(&dev->mode_config.mutex);
f453ba04
DA		 1727
1728 obj = drm_mode_object_find(dev, out_resp->connector_id,
1729 DRM_MODE_OBJECT_CONNECTOR);
1730 if (!obj) {
f27657f2 1731 ret = -ENOENT;
f453ba04
DA		 1732 goto out;
1733 }
1734 connector = obj_to_connector(obj);
1735
7f88a9be 1736 props_count = connector->properties.count;
f453ba04
DA		 1737
1738 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1739 if (connector->encoder_ids[i] != 0) {
1740 encoders_count++;
1741 }
1742 }
1743
1744 if (out_resp->count_modes == 0) {
1745 connector->funcs->fill_modes(connector,
1746 dev->mode_config.max_width,
1747 dev->mode_config.max_height);
1748 }
1749
1750 /* delayed so we get modes regardless of pre-fill_modes state */
1751 list_for_each_entry(mode, &connector->modes, head)
61d8e328
DL		 1752 if (drm_mode_expose_to_userspace(mode, file_priv))
1753 mode_count++;
f453ba04
DA		 1754
1755 out_resp->connector_id = connector->base.id;
1756 out_resp->connector_type = connector->connector_type;
1757 out_resp->connector_type_id = connector->connector_type_id;
1758 out_resp->mm_width = connector->display_info.width_mm;
1759 out_resp->mm_height = connector->display_info.height_mm;
1760 out_resp->subpixel = connector->display_info.subpixel_order;
1761 out_resp->connection = connector->status;
1762 if (connector->encoder)
1763 out_resp->encoder_id = connector->encoder->base.id;
1764 else
1765 out_resp->encoder_id = 0;
1766
1767 /*
1768 * This ioctl is called twice, once to determine how much space is
1769 * needed, and the 2nd time to fill it.
1770 */
1771 if ((out_resp->count_modes >= mode_count) && mode_count) {
1772 copied = 0;
81f6c7f8 1773 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
f453ba04 1774 list_for_each_entry(mode, &connector->modes, head) {
61d8e328
DL		 1775 if (!drm_mode_expose_to_userspace(mode, file_priv))
1776 continue;
1777
f453ba04
DA		 1778 drm_crtc_convert_to_umode(&u_mode, mode);
1779 if (copy_to_user(mode_ptr + copied,
1780 &u_mode, sizeof(u_mode))) {
1781 ret = -EFAULT;
1782 goto out;
1783 }
1784 copied++;
1785 }
1786 }
1787 out_resp->count_modes = mode_count;
1788
1789 if ((out_resp->count_props >= props_count) && props_count) {
1790 copied = 0;
81f6c7f8
VS		 1791 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1792 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
7f88a9be
PZ		 1793 for (i = 0; i < connector->properties.count; i++) {
1794 if (put_user(connector->properties.ids[i],
1795 prop_ptr + copied)) {
1796 ret = -EFAULT;
1797 goto out;
1798 }
f453ba04 1799
7f88a9be
PZ		 1800 if (put_user(connector->properties.values[i],
1801 prop_values + copied)) {
1802 ret = -EFAULT;
1803 goto out;
f453ba04 1804 }
7f88a9be 1805 copied++;
f453ba04
DA		 1806 }
1807 }
1808 out_resp->count_props = props_count;
1809
1810 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1811 copied = 0;
81f6c7f8 1812 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
f453ba04
DA		 1813 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1814 if (connector->encoder_ids[i] != 0) {
1815 if (put_user(connector->encoder_ids[i],
1816 encoder_ptr + copied)) {
1817 ret = -EFAULT;
1818 goto out;
1819 }
1820 copied++;
1821 }
1822 }
1823 }
1824 out_resp->count_encoders = encoders_count;
1825
1826out:
7b24056b
DV		 1827 mutex_unlock(&dev->mode_config.mutex);
1828
f453ba04
DA		 1829 return ret;
1830}
1831
c8e32cc1
DV		 1832/**
1833 * drm_mode_getencoder - get encoder configuration
1834 * @dev: drm device for the ioctl
1835 * @data: data pointer for the ioctl
1836 * @file_priv: drm file for the ioctl call
1837 *
1838 * Construct a encoder configuration structure to return to the user.
1839 *
1840 * Called by the user via ioctl.
1841 *
1842 * Returns:
1843 * Zero on success, errno on failure.
1844 */
f453ba04
DA		 1845int drm_mode_getencoder(struct drm_device *dev, void *data,
1846 struct drm_file *file_priv)
1847{
1848 struct drm_mode_get_encoder *enc_resp = data;
1849 struct drm_mode_object *obj;
1850 struct drm_encoder *encoder;
1851 int ret = 0;
1852
fb3b06c8
DA		 1853 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1854 return -EINVAL;
1855
84849903 1856 drm_modeset_lock_all(dev);
f453ba04
DA		 1857 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1858 DRM_MODE_OBJECT_ENCODER);
1859 if (!obj) {
f27657f2 1860 ret = -ENOENT;
f453ba04
DA		 1861 goto out;
1862 }
1863 encoder = obj_to_encoder(obj);
1864
1865 if (encoder->crtc)
1866 enc_resp->crtc_id = encoder->crtc->base.id;
1867 else
1868 enc_resp->crtc_id = 0;
1869 enc_resp->encoder_type = encoder->encoder_type;
1870 enc_resp->encoder_id = encoder->base.id;
1871 enc_resp->possible_crtcs = encoder->possible_crtcs;
1872 enc_resp->possible_clones = encoder->possible_clones;
1873
1874out:
84849903 1875 drm_modeset_unlock_all(dev);
f453ba04
DA		 1876 return ret;
1877}
1878
8cf5c917 1879/**
c8e32cc1 1880 * drm_mode_getplane_res - enumerate all plane resources
8cf5c917
JB		 1881 * @dev: DRM device
1882 * @data: ioctl data
1883 * @file_priv: DRM file info
1884 *
c8e32cc1
DV		 1885 * Construct a list of plane ids to return to the user.
1886 *
1887 * Called by the user via ioctl.
1888 *
1889 * Returns:
1890 * Zero on success, errno on failure.
8cf5c917
JB		 1891 */
1892int drm_mode_getplane_res(struct drm_device *dev, void *data,
c8e32cc1 1893 struct drm_file *file_priv)
8cf5c917
JB		 1894{
1895 struct drm_mode_get_plane_res *plane_resp = data;
1896 struct drm_mode_config *config;
1897 struct drm_plane *plane;
1898 uint32_t __user *plane_ptr;
1899 int copied = 0, ret = 0;
1900
1901 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1902 return -EINVAL;
1903
84849903 1904 drm_modeset_lock_all(dev);
8cf5c917
JB		 1905 config = &dev->mode_config;
1906
1907 /*
1908 * This ioctl is called twice, once to determine how much space is
1909 * needed, and the 2nd time to fill it.
1910 */
1911 if (config->num_plane &&
1912 (plane_resp->count_planes >= config->num_plane)) {
81f6c7f8 1913 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
8cf5c917
JB		 1914
1915 list_for_each_entry(plane, &config->plane_list, head) {
1916 if (put_user(plane->base.id, plane_ptr + copied)) {
1917 ret = -EFAULT;
1918 goto out;
1919 }
1920 copied++;
1921 }
1922 }
1923 plane_resp->count_planes = config->num_plane;
1924
1925out:
84849903 1926 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1927 return ret;
1928}
1929
1930/**
c8e32cc1 1931 * drm_mode_getplane - get plane configuration
8cf5c917
JB		 1932 * @dev: DRM device
1933 * @data: ioctl data
1934 * @file_priv: DRM file info
1935 *
c8e32cc1
DV		 1936 * Construct a plane configuration structure to return to the user.
1937 *
1938 * Called by the user via ioctl.
1939 *
1940 * Returns:
1941 * Zero on success, errno on failure.
8cf5c917
JB		 1942 */
1943int drm_mode_getplane(struct drm_device *dev, void *data,
c8e32cc1 1944 struct drm_file *file_priv)
8cf5c917
JB		 1945{
1946 struct drm_mode_get_plane *plane_resp = data;
1947 struct drm_mode_object *obj;
1948 struct drm_plane *plane;
1949 uint32_t __user *format_ptr;
1950 int ret = 0;
1951
1952 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1953 return -EINVAL;
1954
84849903 1955 drm_modeset_lock_all(dev);
8cf5c917
JB		 1956 obj = drm_mode_object_find(dev, plane_resp->plane_id,
1957 DRM_MODE_OBJECT_PLANE);
1958 if (!obj) {
1959 ret = -ENOENT;
1960 goto out;
1961 }
1962 plane = obj_to_plane(obj);
1963
1964 if (plane->crtc)
1965 plane_resp->crtc_id = plane->crtc->base.id;
1966 else
1967 plane_resp->crtc_id = 0;
1968
1969 if (plane->fb)
1970 plane_resp->fb_id = plane->fb->base.id;
1971 else
1972 plane_resp->fb_id = 0;
1973
1974 plane_resp->plane_id = plane->base.id;
1975 plane_resp->possible_crtcs = plane->possible_crtcs;
778ad903 1976 plane_resp->gamma_size = 0;
8cf5c917
JB		 1977
1978 /*
1979 * This ioctl is called twice, once to determine how much space is
1980 * needed, and the 2nd time to fill it.
1981 */
1982 if (plane->format_count &&
1983 (plane_resp->count_format_types >= plane->format_count)) {
81f6c7f8 1984 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
8cf5c917
JB		 1985 if (copy_to_user(format_ptr,
1986 plane->format_types,
1987 sizeof(uint32_t) * plane->format_count)) {
1988 ret = -EFAULT;
1989 goto out;
1990 }
1991 }
1992 plane_resp->count_format_types = plane->format_count;
1993
1994out:
84849903 1995 drm_modeset_unlock_all(dev);
8cf5c917
JB		 1996 return ret;
1997}
1998
1999/**
c8e32cc1 2000 * drm_mode_setplane - configure a plane's configuration
8cf5c917
JB		 2001 * @dev: DRM device
2002 * @data: ioctl data*
065a50ed 2003 * @file_priv: DRM file info
8cf5c917 2004 *
c8e32cc1 2005 * Set plane configuration, including placement, fb, scaling, and other factors.
8cf5c917 2006 * Or pass a NULL fb to disable.
c8e32cc1
DV		 2007 *
2008 * Returns:
2009 * Zero on success, errno on failure.
8cf5c917
JB		 2010 */
2011int drm_mode_setplane(struct drm_device *dev, void *data,
c8e32cc1 2012 struct drm_file *file_priv)
8cf5c917
JB		 2013{
2014 struct drm_mode_set_plane *plane_req = data;
2015 struct drm_mode_object *obj;
2016 struct drm_plane *plane;
2017 struct drm_crtc *crtc;
6c2a7532 2018 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
8cf5c917 2019 int ret = 0;
42ef8789 2020 unsigned int fb_width, fb_height;
62443be6 2021 int i;
8cf5c917
JB		 2022
2023 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2024 return -EINVAL;
2025
8cf5c917
JB		 2026 /*
2027 * First, find the plane, crtc, and fb objects. If not available,
2028 * we don't bother to call the driver.
2029 */
2030 obj = drm_mode_object_find(dev, plane_req->plane_id,
2031 DRM_MODE_OBJECT_PLANE);
2032 if (!obj) {
2033 DRM_DEBUG_KMS("Unknown plane ID %d\n",
2034 plane_req->plane_id);
6c2a7532 2035 return -ENOENT;
8cf5c917
JB		 2036 }
2037 plane = obj_to_plane(obj);
2038
2039 /* No fb means shut it down */
2040 if (!plane_req->fb_id) {
6c2a7532
DV		 2041 drm_modeset_lock_all(dev);
2042 old_fb = plane->fb;
8cf5c917 2043 plane->funcs->disable_plane(plane);
e5e3b44c
VS		 2044 plane->crtc = NULL;
2045 plane->fb = NULL;
6c2a7532 2046 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2047 goto out;
2048 }
2049
2050 obj = drm_mode_object_find(dev, plane_req->crtc_id,
2051 DRM_MODE_OBJECT_CRTC);
2052 if (!obj) {
2053 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
2054 plane_req->crtc_id);
2055 ret = -ENOENT;
2056 goto out;
2057 }
2058 crtc = obj_to_crtc(obj);
2059
786b99ed
DV		 2060 fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
2061 if (!fb) {
8cf5c917
JB		 2062 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
2063 plane_req->fb_id);
2064 ret = -ENOENT;
2065 goto out;
2066 }
8cf5c917 2067
62443be6
VS		 2068 /* Check whether this plane supports the fb pixel format. */
2069 for (i = 0; i < plane->format_count; i++)
2070 if (fb->pixel_format == plane->format_types[i])
2071 break;
2072 if (i == plane->format_count) {
6ba6d03e
VS		 2073 DRM_DEBUG_KMS("Invalid pixel format %s\n",
2074 drm_get_format_name(fb->pixel_format));
62443be6
VS		 2075 ret = -EINVAL;
2076 goto out;
2077 }
2078
42ef8789
VS		 2079 fb_width = fb->width << 16;
2080 fb_height = fb->height << 16;
2081
2082 /* Make sure source coordinates are inside the fb. */
2083 if (plane_req->src_w > fb_width ||
2084 plane_req->src_x > fb_width - plane_req->src_w ||
2085 plane_req->src_h > fb_height ||
2086 plane_req->src_y > fb_height - plane_req->src_h) {
2087 DRM_DEBUG_KMS("Invalid source coordinates "
2088 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
2089 plane_req->src_w >> 16,
2090 ((plane_req->src_w & 0xffff) * 15625) >> 10,
2091 plane_req->src_h >> 16,
2092 ((plane_req->src_h & 0xffff) * 15625) >> 10,
2093 plane_req->src_x >> 16,
2094 ((plane_req->src_x & 0xffff) * 15625) >> 10,
2095 plane_req->src_y >> 16,
2096 ((plane_req->src_y & 0xffff) * 15625) >> 10);
2097 ret = -ENOSPC;
2098 goto out;
2099 }
2100
687a0400
VS		 2101 /* Give drivers some help against integer overflows */
2102 if (plane_req->crtc_w > INT_MAX ||
2103 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
2104 plane_req->crtc_h > INT_MAX ||
2105 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
2106 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
2107 plane_req->crtc_w, plane_req->crtc_h,
2108 plane_req->crtc_x, plane_req->crtc_y);
2109 ret = -ERANGE;
2110 goto out;
2111 }
2112
6c2a7532 2113 drm_modeset_lock_all(dev);
8cf5c917
JB		 2114 ret = plane->funcs->update_plane(plane, crtc, fb,
2115 plane_req->crtc_x, plane_req->crtc_y,
2116 plane_req->crtc_w, plane_req->crtc_h,
2117 plane_req->src_x, plane_req->src_y,
2118 plane_req->src_w, plane_req->src_h);
2119 if (!ret) {
6c2a7532 2120 old_fb = plane->fb;
8cf5c917
JB		 2121 plane->crtc = crtc;
2122 plane->fb = fb;
35f8badc 2123 fb = NULL;
8cf5c917 2124 }
6c2a7532 2125 drm_modeset_unlock_all(dev);
8cf5c917
JB		 2126
2127out:
6c2a7532
DV		 2128 if (fb)
2129 drm_framebuffer_unreference(fb);
2130 if (old_fb)
2131 drm_framebuffer_unreference(old_fb);
8cf5c917
JB		 2132
2133 return ret;
2134}
2135
2d13b679
DV		 2136/**
2137 * drm_mode_set_config_internal - helper to call ->set_config
2138 * @set: modeset config to set
2139 *
2140 * This is a little helper to wrap internal calls to the ->set_config driver
2141 * interface. The only thing it adds is correct refcounting dance.
c8e32cc1
DV		 2142 *
2143 * Returns:
2144 * Zero on success, errno on failure.
2d13b679
DV		 2145 */
2146int drm_mode_set_config_internal(struct drm_mode_set *set)
2147{
2148 struct drm_crtc *crtc = set->crtc;
5cef29aa
DV		 2149 struct drm_framebuffer *fb;
2150 struct drm_crtc *tmp;
b0d12325
DV		 2151 int ret;
2152
5cef29aa
DV		 2153 /*
2154 * NOTE: ->set_config can also disable other crtcs (if we steal all
2155 * connectors from it), hence we need to refcount the fbs across all
2156 * crtcs. Atomic modeset will have saner semantics ...
2157 */
2158 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head)
2159 tmp->old_fb = tmp->fb;
2160
b0d12325 2161 fb = set->fb;
2d13b679 2162
b0d12325
DV		 2163 ret = crtc->funcs->set_config(set);
2164 if (ret == 0) {
cc85e121
DV		 2165 /* crtc->fb must be updated by ->set_config, enforces this. */
2166 WARN_ON(fb != crtc->fb);
5cef29aa 2167 }
cc85e121 2168
5cef29aa
DV		 2169 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) {
2170 if (tmp->fb)
2171 drm_framebuffer_reference(tmp->fb);
2172 if (tmp->old_fb)
2173 drm_framebuffer_unreference(tmp->old_fb);
b0d12325
DV		 2174 }
2175
2176 return ret;
2d13b679
DV		 2177}
2178EXPORT_SYMBOL(drm_mode_set_config_internal);
2179
c11e9283
DL		 2180/*
2181 * Checks that the framebuffer is big enough for the CRTC viewport
2182 * (x, y, hdisplay, vdisplay)
2183 */
2184static int drm_crtc_check_viewport(const struct drm_crtc *crtc,
2185 int x, int y,
2186 const struct drm_display_mode *mode,
2187 const struct drm_framebuffer *fb)
2188
2189{
2190 int hdisplay, vdisplay;
2191
2192 hdisplay = mode->hdisplay;
2193 vdisplay = mode->vdisplay;
2194
a0c1bbb0
DL		 2195 if (drm_mode_is_stereo(mode)) {
2196 struct drm_display_mode adjusted = *mode;
2197
2198 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
2199 hdisplay = adjusted.crtc_hdisplay;
2200 vdisplay = adjusted.crtc_vdisplay;
2201 }
2202
c11e9283
DL		 2203 if (crtc->invert_dimensions)
2204 swap(hdisplay, vdisplay);
2205
2206 if (hdisplay > fb->width ||
2207 vdisplay > fb->height ||
2208 x > fb->width - hdisplay ||
2209 y > fb->height - vdisplay) {
2210 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
2211 fb->width, fb->height, hdisplay, vdisplay, x, y,
2212 crtc->invert_dimensions ? " (inverted)" : "");
2213 return -ENOSPC;
2214 }
2215
2216 return 0;
2217}
2218
f453ba04
DA		 2219/**
2220 * drm_mode_setcrtc - set CRTC configuration
065a50ed
DV		 2221 * @dev: drm device for the ioctl
2222 * @data: data pointer for the ioctl
2223 * @file_priv: drm file for the ioctl call
f453ba04 2224 *
f453ba04
DA		 2225 * Build a new CRTC configuration based on user request.
2226 *
2227 * Called by the user via ioctl.
2228 *
c8e32cc1 2229 * Returns:
f453ba04
DA		 2230 * Zero on success, errno on failure.
2231 */
2232int drm_mode_setcrtc(struct drm_device *dev, void *data,
2233 struct drm_file *file_priv)
2234{
2235 struct drm_mode_config *config = &dev->mode_config;
2236 struct drm_mode_crtc *crtc_req = data;
2237 struct drm_mode_object *obj;
6653cc8d 2238 struct drm_crtc *crtc;
f453ba04
DA		 2239 struct drm_connector **connector_set = NULL, *connector;
2240 struct drm_framebuffer *fb = NULL;
2241 struct drm_display_mode *mode = NULL;
2242 struct drm_mode_set set;
2243 uint32_t __user *set_connectors_ptr;
4a1b0714 2244 int ret;
f453ba04
DA		 2245 int i;
2246
fb3b06c8
DA		 2247 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2248 return -EINVAL;
2249
1d97e915
VS		 2250 /* For some reason crtc x/y offsets are signed internally. */
2251 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
2252 return -ERANGE;
2253
84849903 2254 drm_modeset_lock_all(dev);
f453ba04
DA		 2255 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
2256 DRM_MODE_OBJECT_CRTC);
2257 if (!obj) {
58367ed6 2258 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
f27657f2 2259 ret = -ENOENT;
f453ba04
DA		 2260 goto out;
2261 }
2262 crtc = obj_to_crtc(obj);
9440106b 2263 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
f453ba04
DA		 2264
2265 if (crtc_req->mode_valid) {
2266 /* If we have a mode we need a framebuffer. */
2267 /* If we pass -1, set the mode with the currently bound fb */
2268 if (crtc_req->fb_id == -1) {
6653cc8d
VS		 2269 if (!crtc->fb) {
2270 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
2271 ret = -EINVAL;
2272 goto out;
f453ba04 2273 }
6653cc8d 2274 fb = crtc->fb;
b0d12325
DV		 2275 /* Make refcounting symmetric with the lookup path. */
2276 drm_framebuffer_reference(fb);
f453ba04 2277 } else {
786b99ed
DV		 2278 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
2279 if (!fb) {
58367ed6
ZY		 2280 DRM_DEBUG_KMS("Unknown FB ID%d\n",
2281 crtc_req->fb_id);
37c4e705 2282 ret = -ENOENT;
f453ba04
DA		 2283 goto out;
2284 }
f453ba04
DA		 2285 }
2286
2287 mode = drm_mode_create(dev);
ee34ab5b
VS		 2288 if (!mode) {
2289 ret = -ENOMEM;
2290 goto out;
2291 }
2292
90367bf6
VS		 2293 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
2294 if (ret) {
2295 DRM_DEBUG_KMS("Invalid mode\n");
2296 goto out;
2297 }
2298
f453ba04 2299 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
5f61bb42 2300
c11e9283
DL		 2301 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
2302 mode, fb);
2303 if (ret)
5f61bb42 2304 goto out;
c11e9283 2305
f453ba04
DA		 2306 }
2307
2308 if (crtc_req->count_connectors == 0 && mode) {
58367ed6 2309 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
f453ba04
DA		 2310 ret = -EINVAL;
2311 goto out;
2312 }
2313
7781de74 2314 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
58367ed6 2315 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
f453ba04
DA		 2316 crtc_req->count_connectors);
2317 ret = -EINVAL;
2318 goto out;
2319 }
2320
2321 if (crtc_req->count_connectors > 0) {
2322 u32 out_id;
2323
2324 /* Avoid unbounded kernel memory allocation */
2325 if (crtc_req->count_connectors > config->num_connector) {
2326 ret = -EINVAL;
2327 goto out;
2328 }
2329
2330 connector_set = kmalloc(crtc_req->count_connectors *
2331 sizeof(struct drm_connector *),
2332 GFP_KERNEL);
2333 if (!connector_set) {
2334 ret = -ENOMEM;
2335 goto out;
2336 }
2337
2338 for (i = 0; i < crtc_req->count_connectors; i++) {
81f6c7f8 2339 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
f453ba04
DA		 2340 if (get_user(out_id, &set_connectors_ptr[i])) {
2341 ret = -EFAULT;
2342 goto out;
2343 }
2344
2345 obj = drm_mode_object_find(dev, out_id,
2346 DRM_MODE_OBJECT_CONNECTOR);
2347 if (!obj) {
58367ed6
ZY		 2348 DRM_DEBUG_KMS("Connector id %d unknown\n",
2349 out_id);
f27657f2 2350 ret = -ENOENT;
f453ba04
DA		 2351 goto out;
2352 }
2353 connector = obj_to_connector(obj);
9440106b
JG		 2354 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2355 connector->base.id,
2356 drm_get_connector_name(connector));
f453ba04
DA		 2357
2358 connector_set[i] = connector;
2359 }
2360 }
2361
2362 set.crtc = crtc;
2363 set.x = crtc_req->x;
2364 set.y = crtc_req->y;
2365 set.mode = mode;
2366 set.connectors = connector_set;
2367 set.num_connectors = crtc_req->count_connectors;
5ef5f72f 2368 set.fb = fb;
2d13b679 2369 ret = drm_mode_set_config_internal(&set);
f453ba04
DA		 2370
2371out:
b0d12325
DV		 2372 if (fb)
2373 drm_framebuffer_unreference(fb);
2374
f453ba04 2375 kfree(connector_set);
ee34ab5b 2376 drm_mode_destroy(dev, mode);
84849903 2377 drm_modeset_unlock_all(dev);
f453ba04
DA		 2378 return ret;
2379}
2380
4c813d4d
DA		 2381static int drm_mode_cursor_common(struct drm_device *dev,
2382 struct drm_mode_cursor2 *req,
2383 struct drm_file *file_priv)
f453ba04 2384{
f453ba04
DA		 2385 struct drm_mode_object *obj;
2386 struct drm_crtc *crtc;
2387 int ret = 0;
2388
fb3b06c8
DA		 2389 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2390 return -EINVAL;
2391
7c4eaca4 2392 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
f453ba04 2393 return -EINVAL;
f453ba04 2394
e0c8463a 2395 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
f453ba04 2396 if (!obj) {
58367ed6 2397 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
f27657f2 2398 return -ENOENT;
f453ba04
DA		 2399 }
2400 crtc = obj_to_crtc(obj);
2401
dac35663 2402 mutex_lock(&crtc->mutex);
f453ba04 2403 if (req->flags & DRM_MODE_CURSOR_BO) {
4c813d4d 2404 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
f453ba04
DA		 2405 ret = -ENXIO;
2406 goto out;
2407 }
2408 /* Turns off the cursor if handle is 0 */
4c813d4d
DA		 2409 if (crtc->funcs->cursor_set2)
2410 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
2411 req->width, req->height, req->hot_x, req->hot_y);
2412 else
2413 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2414 req->width, req->height);
f453ba04
DA		 2415 }
2416
2417 if (req->flags & DRM_MODE_CURSOR_MOVE) {
2418 if (crtc->funcs->cursor_move) {
2419 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2420 } else {
f453ba04
DA		 2421 ret = -EFAULT;
2422 goto out;
2423 }
2424 }
2425out:
dac35663
DV		 2426 mutex_unlock(&crtc->mutex);
2427
f453ba04 2428 return ret;
4c813d4d
DA		 2429
2430}
c8e32cc1
DV		 2431
2432
2433/**
2434 * drm_mode_cursor_ioctl - set CRTC's cursor configuration
2435 * @dev: drm device for the ioctl
2436 * @data: data pointer for the ioctl
2437 * @file_priv: drm file for the ioctl call
2438 *
2439 * Set the cursor configuration based on user request.
2440 *
2441 * Called by the user via ioctl.
2442 *
2443 * Returns:
2444 * Zero on success, errno on failure.
2445 */
4c813d4d 2446int drm_mode_cursor_ioctl(struct drm_device *dev,
c8e32cc1 2447 void *data, struct drm_file *file_priv)
4c813d4d
DA		 2448{
2449 struct drm_mode_cursor *req = data;
2450 struct drm_mode_cursor2 new_req;
2451
2452 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
2453 new_req.hot_x = new_req.hot_y = 0;
2454
2455 return drm_mode_cursor_common(dev, &new_req, file_priv);
2456}
2457
c8e32cc1
DV		 2458/**
2459 * drm_mode_cursor2_ioctl - set CRTC's cursor configuration
2460 * @dev: drm device for the ioctl
2461 * @data: data pointer for the ioctl
2462 * @file_priv: drm file for the ioctl call
2463 *
2464 * Set the cursor configuration based on user request. This implements the 2nd
2465 * version of the cursor ioctl, which allows userspace to additionally specify
2466 * the hotspot of the pointer.
2467 *
2468 * Called by the user via ioctl.
2469 *
2470 * Returns:
2471 * Zero on success, errno on failure.
2472 */
4c813d4d
DA		 2473int drm_mode_cursor2_ioctl(struct drm_device *dev,
2474 void *data, struct drm_file *file_priv)
2475{
2476 struct drm_mode_cursor2 *req = data;
2477 return drm_mode_cursor_common(dev, req, file_priv);
f453ba04
DA		 2478}
2479
c8e32cc1
DV		 2480/**
2481 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
2482 * @bpp: bits per pixels
2483 * @depth: bit depth per pixel
2484 *
2485 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
2486 * Useful in fbdev emulation code, since that deals in those values.
2487 */
308e5bcb
JB		 2488uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2489{
2490 uint32_t fmt;
2491
2492 switch (bpp) {
2493 case 8:
d84f031b 2494 fmt = DRM_FORMAT_C8;
308e5bcb
JB		 2495 break;
2496 case 16:
2497 if (depth == 15)
04b3924d 2498 fmt = DRM_FORMAT_XRGB1555;
308e5bcb 2499 else
04b3924d 2500 fmt = DRM_FORMAT_RGB565;
308e5bcb
JB		 2501 break;
2502 case 24:
04b3924d 2503 fmt = DRM_FORMAT_RGB888;
308e5bcb
JB		 2504 break;
2505 case 32:
2506 if (depth == 24)
04b3924d 2507 fmt = DRM_FORMAT_XRGB8888;
308e5bcb 2508 else if (depth == 30)
04b3924d 2509 fmt = DRM_FORMAT_XRGB2101010;
308e5bcb 2510 else
04b3924d 2511 fmt = DRM_FORMAT_ARGB8888;
308e5bcb
JB		 2512 break;
2513 default:
04b3924d
VS		 2514 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2515 fmt = DRM_FORMAT_XRGB8888;
308e5bcb
JB		 2516 break;
2517 }
2518
2519 return fmt;
2520}
2521EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2522
f453ba04
DA		 2523/**
2524 * drm_mode_addfb - add an FB to the graphics configuration
065a50ed
DV		 2525 * @dev: drm device for the ioctl
2526 * @data: data pointer for the ioctl
2527 * @file_priv: drm file for the ioctl call
f453ba04 2528 *
c8e32cc1
DV		 2529 * Add a new FB to the specified CRTC, given a user request. This is the
2530 * original addfb ioclt which only supported RGB formats.
f453ba04
DA		 2531 *
2532 * Called by the user via ioctl.
2533 *
c8e32cc1 2534 * Returns:
f453ba04
DA		 2535 * Zero on success, errno on failure.
2536 */
2537int drm_mode_addfb(struct drm_device *dev,
2538 void *data, struct drm_file *file_priv)
2539{
308e5bcb
JB		 2540 struct drm_mode_fb_cmd *or = data;
2541 struct drm_mode_fb_cmd2 r = {};
2542 struct drm_mode_config *config = &dev->mode_config;
2543 struct drm_framebuffer *fb;
2544 int ret = 0;
2545
2546 /* Use new struct with format internally */
2547 r.fb_id = or->fb_id;
2548 r.width = or->width;
2549 r.height = or->height;
2550 r.pitches[0] = or->pitch;
2551 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2552 r.handles[0] = or->handle;
2553
2554 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2555 return -EINVAL;
2556
acb4b992 2557 if ((config->min_width > r.width) || (r.width > config->max_width))
308e5bcb 2558 return -EINVAL;
acb4b992
JB		 2559
2560 if ((config->min_height > r.height) || (r.height > config->max_height))
308e5bcb 2561 return -EINVAL;
308e5bcb 2562
308e5bcb
JB		 2563 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2564 if (IS_ERR(fb)) {
1aa1b11c 2565 DRM_DEBUG_KMS("could not create framebuffer\n");
4b096ac1 2566 return PTR_ERR(fb);
308e5bcb
JB		 2567 }
2568
4b096ac1 2569 mutex_lock(&file_priv->fbs_lock);
308e5bcb
JB		 2570 or->fb_id = fb->base.id;
2571 list_add(&fb->filp_head, &file_priv->fbs);
2572 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 2573 mutex_unlock(&file_priv->fbs_lock);
4b096ac1 2574
308e5bcb
JB		 2575 return ret;
2576}
2577
cff91b62 2578static int format_check(const struct drm_mode_fb_cmd2 *r)
935b5977
VS		 2579{
2580 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2581
2582 switch (format) {
2583 case DRM_FORMAT_C8:
2584 case DRM_FORMAT_RGB332:
2585 case DRM_FORMAT_BGR233:
2586 case DRM_FORMAT_XRGB4444:
2587 case DRM_FORMAT_XBGR4444:
2588 case DRM_FORMAT_RGBX4444:
2589 case DRM_FORMAT_BGRX4444:
2590 case DRM_FORMAT_ARGB4444:
2591 case DRM_FORMAT_ABGR4444:
2592 case DRM_FORMAT_RGBA4444:
2593 case DRM_FORMAT_BGRA4444:
2594 case DRM_FORMAT_XRGB1555:
2595 case DRM_FORMAT_XBGR1555:
2596 case DRM_FORMAT_RGBX5551:
2597 case DRM_FORMAT_BGRX5551:
2598 case DRM_FORMAT_ARGB1555:
2599 case DRM_FORMAT_ABGR1555:
2600 case DRM_FORMAT_RGBA5551:
2601 case DRM_FORMAT_BGRA5551:
2602 case DRM_FORMAT_RGB565:
2603 case DRM_FORMAT_BGR565:
2604 case DRM_FORMAT_RGB888:
2605 case DRM_FORMAT_BGR888:
2606 case DRM_FORMAT_XRGB8888:
2607 case DRM_FORMAT_XBGR8888:
2608 case DRM_FORMAT_RGBX8888:
2609 case DRM_FORMAT_BGRX8888:
2610 case DRM_FORMAT_ARGB8888:
2611 case DRM_FORMAT_ABGR8888:
2612 case DRM_FORMAT_RGBA8888:
2613 case DRM_FORMAT_BGRA8888:
2614 case DRM_FORMAT_XRGB2101010:
2615 case DRM_FORMAT_XBGR2101010:
2616 case DRM_FORMAT_RGBX1010102:
2617 case DRM_FORMAT_BGRX1010102:
2618 case DRM_FORMAT_ARGB2101010:
2619 case DRM_FORMAT_ABGR2101010:
2620 case DRM_FORMAT_RGBA1010102:
2621 case DRM_FORMAT_BGRA1010102:
2622 case DRM_FORMAT_YUYV:
2623 case DRM_FORMAT_YVYU:
2624 case DRM_FORMAT_UYVY:
2625 case DRM_FORMAT_VYUY:
2626 case DRM_FORMAT_AYUV:
2627 case DRM_FORMAT_NV12:
2628 case DRM_FORMAT_NV21:
2629 case DRM_FORMAT_NV16:
2630 case DRM_FORMAT_NV61:
ba623f6a
LP		 2631 case DRM_FORMAT_NV24:
2632 case DRM_FORMAT_NV42:
935b5977
VS		 2633 case DRM_FORMAT_YUV410:
2634 case DRM_FORMAT_YVU410:
2635 case DRM_FORMAT_YUV411:
2636 case DRM_FORMAT_YVU411:
2637 case DRM_FORMAT_YUV420:
2638 case DRM_FORMAT_YVU420:
2639 case DRM_FORMAT_YUV422:
2640 case DRM_FORMAT_YVU422:
2641 case DRM_FORMAT_YUV444:
2642 case DRM_FORMAT_YVU444:
2643 return 0;
2644 default:
23c453a4
VS		 2645 DRM_DEBUG_KMS("invalid pixel format %s\n",
2646 drm_get_format_name(r->pixel_format));
935b5977
VS		 2647 return -EINVAL;
2648 }
2649}
2650
cff91b62 2651static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
d1b45d5f
VS		 2652{
2653 int ret, hsub, vsub, num_planes, i;
2654
2655 ret = format_check(r);
2656 if (ret) {
6ba6d03e
VS		 2657 DRM_DEBUG_KMS("bad framebuffer format %s\n",
2658 drm_get_format_name(r->pixel_format));
d1b45d5f
VS		 2659 return ret;
2660 }
2661
2662 hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2663 vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2664 num_planes = drm_format_num_planes(r->pixel_format);
2665
2666 if (r->width == 0 || r->width % hsub) {
1aa1b11c 2667 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
d1b45d5f
VS		 2668 return -EINVAL;
2669 }
2670
2671 if (r->height == 0 || r->height % vsub) {
1aa1b11c 2672 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
d1b45d5f
VS		 2673 return -EINVAL;
2674 }
2675
2676 for (i = 0; i < num_planes; i++) {
2677 unsigned int width = r->width / (i != 0 ? hsub : 1);
b180b5d1
VS		 2678 unsigned int height = r->height / (i != 0 ? vsub : 1);
2679 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
d1b45d5f
VS		 2680
2681 if (!r->handles[i]) {
1aa1b11c 2682 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
d1b45d5f
VS		 2683 return -EINVAL;
2684 }
2685
b180b5d1
VS		 2686 if ((uint64_t) width * cpp > UINT_MAX)
2687 return -ERANGE;
2688
2689 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2690 return -ERANGE;
2691
2692 if (r->pitches[i] < width * cpp) {
1aa1b11c 2693 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
d1b45d5f
VS		 2694 return -EINVAL;
2695 }
2696 }
2697
2698 return 0;
2699}
2700
308e5bcb
JB		 2701/**
2702 * drm_mode_addfb2 - add an FB to the graphics configuration
065a50ed
DV		 2703 * @dev: drm device for the ioctl
2704 * @data: data pointer for the ioctl
2705 * @file_priv: drm file for the ioctl call
308e5bcb 2706 *
c8e32cc1
DV		 2707 * Add a new FB to the specified CRTC, given a user request with format. This is
2708 * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers
2709 * and uses fourcc codes as pixel format specifiers.
308e5bcb
JB		 2710 *
2711 * Called by the user via ioctl.
2712 *
c8e32cc1 2713 * Returns:
308e5bcb
JB		 2714 * Zero on success, errno on failure.
2715 */
2716int drm_mode_addfb2(struct drm_device *dev,
2717 void *data, struct drm_file *file_priv)
2718{
2719 struct drm_mode_fb_cmd2 *r = data;
f453ba04
DA		 2720 struct drm_mode_config *config = &dev->mode_config;
2721 struct drm_framebuffer *fb;
4a1b0714 2722 int ret;
f453ba04 2723
fb3b06c8
DA		 2724 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2725 return -EINVAL;
2726
e3cc3520
VS		 2727 if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2728 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2729 return -EINVAL;
2730 }
2731
f453ba04 2732 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1aa1b11c 2733 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
8cf5c917 2734 r->width, config->min_width, config->max_width);
f453ba04
DA		 2735 return -EINVAL;
2736 }
2737 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1aa1b11c 2738 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
8cf5c917 2739 r->height, config->min_height, config->max_height);
f453ba04
DA		 2740 return -EINVAL;
2741 }
2742
d1b45d5f
VS		 2743 ret = framebuffer_check(r);
2744 if (ret)
935b5977 2745 return ret;
935b5977 2746
f453ba04 2747 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
cce13ff7 2748 if (IS_ERR(fb)) {
1aa1b11c 2749 DRM_DEBUG_KMS("could not create framebuffer\n");
4b096ac1 2750 return PTR_ERR(fb);
f453ba04
DA		 2751 }
2752
4b096ac1 2753 mutex_lock(&file_priv->fbs_lock);
e0c8463a 2754 r->fb_id = fb->base.id;
f453ba04 2755 list_add(&fb->filp_head, &file_priv->fbs);
9440106b 2756 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
4b096ac1 2757 mutex_unlock(&file_priv->fbs_lock);
f453ba04 2758
4b096ac1 2759
f453ba04
DA		 2760 return ret;
2761}
2762
2763/**
2764 * drm_mode_rmfb - remove an FB from the configuration
065a50ed
DV		 2765 * @dev: drm device for the ioctl
2766 * @data: data pointer for the ioctl
2767 * @file_priv: drm file for the ioctl call
f453ba04 2768 *
f453ba04
DA		 2769 * Remove the FB specified by the user.
2770 *
2771 * Called by the user via ioctl.
2772 *
c8e32cc1 2773 * Returns:
f453ba04
DA		 2774 * Zero on success, errno on failure.
2775 */
2776int drm_mode_rmfb(struct drm_device *dev,
2777 void *data, struct drm_file *file_priv)
2778{
f453ba04
DA		 2779 struct drm_framebuffer *fb = NULL;
2780 struct drm_framebuffer *fbl = NULL;
2781 uint32_t *id = data;
f453ba04
DA		 2782 int found = 0;
2783
fb3b06c8
DA		 2784 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2785 return -EINVAL;
2786
4b096ac1 2787 mutex_lock(&file_priv->fbs_lock);
2b677e8c
DV		 2788 mutex_lock(&dev->mode_config.fb_lock);
2789 fb = __drm_framebuffer_lookup(dev, *id);
2790 if (!fb)
2791 goto fail_lookup;
2792
f453ba04
DA		 2793 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2794 if (fb == fbl)
2795 found = 1;
2b677e8c
DV		 2796 if (!found)
2797 goto fail_lookup;
2798
2799 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2800 __drm_framebuffer_unregister(dev, fb);
f453ba04 2801
4b096ac1 2802 list_del_init(&fb->filp_head);
2b677e8c 2803 mutex_unlock(&dev->mode_config.fb_lock);
4b096ac1 2804 mutex_unlock(&file_priv->fbs_lock);
f453ba04 2805
4b096ac1 2806 drm_framebuffer_remove(fb);
4b096ac1 2807
2b677e8c
DV		 2808 return 0;
2809
2810fail_lookup:
2811 mutex_unlock(&dev->mode_config.fb_lock);
2812 mutex_unlock(&file_priv->fbs_lock);
2813
37c4e705 2814 return -ENOENT;
f453ba04
DA		 2815}
2816
2817/**
2818 * drm_mode_getfb - get FB info
065a50ed
DV		 2819 * @dev: drm device for the ioctl
2820 * @data: data pointer for the ioctl
2821 * @file_priv: drm file for the ioctl call
f453ba04 2822 *
f453ba04
DA		 2823 * Lookup the FB given its ID and return info about it.
2824 *
2825 * Called by the user via ioctl.
2826 *
c8e32cc1 2827 * Returns:
f453ba04
DA		 2828 * Zero on success, errno on failure.
2829 */
2830int drm_mode_getfb(struct drm_device *dev,
2831 void *data, struct drm_file *file_priv)
2832{
2833 struct drm_mode_fb_cmd *r = data;
f453ba04 2834 struct drm_framebuffer *fb;
58c0dca1 2835 int ret;
f453ba04 2836
fb3b06c8
DA		 2837 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2838 return -EINVAL;
2839
786b99ed 2840 fb = drm_framebuffer_lookup(dev, r->fb_id);
58c0dca1 2841 if (!fb)
37c4e705 2842 return -ENOENT;
f453ba04
DA		 2843
2844 r->height = fb->height;
2845 r->width = fb->width;
2846 r->depth = fb->depth;
2847 r->bpp = fb->bits_per_pixel;
01f2c773 2848 r->pitch = fb->pitches[0];
101b96f3 2849 if (fb->funcs->create_handle) {
09f308f7 2850 if (file_priv->is_master || capable(CAP_SYS_ADMIN) ||
43683057 2851 drm_is_control_client(file_priv)) {
101b96f3
DH		 2852 ret = fb->funcs->create_handle(fb, file_priv,
2853 &r->handle);
2854 } else {
2855 /* GET_FB() is an unprivileged ioctl so we must not
2856 * return a buffer-handle to non-master processes! For
2857 * backwards-compatibility reasons, we cannot make
2858 * GET_FB() privileged, so just return an invalid handle
2859 * for non-masters. */
2860 r->handle = 0;
2861 ret = 0;
2862 }
2863 } else {
af26ef3b 2864 ret = -ENODEV;
101b96f3 2865 }
f453ba04 2866
58c0dca1
DV		 2867 drm_framebuffer_unreference(fb);
2868
f453ba04
DA		 2869 return ret;
2870}
2871
c8e32cc1
DV		 2872/**
2873 * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
2874 * @dev: drm device for the ioctl
2875 * @data: data pointer for the ioctl
2876 * @file_priv: drm file for the ioctl call
2877 *
2878 * Lookup the FB and flush out the damaged area supplied by userspace as a clip
2879 * rectangle list. Generic userspace which does frontbuffer rendering must call
2880 * this ioctl to flush out the changes on manual-update display outputs, e.g.
2881 * usb display-link, mipi manual update panels or edp panel self refresh modes.
2882 *
2883 * Modesetting drivers which always update the frontbuffer do not need to
2884 * implement the corresponding ->dirty framebuffer callback.
2885 *
2886 * Called by the user via ioctl.
2887 *
2888 * Returns:
2889 * Zero on success, errno on failure.
2890 */
884840aa
JB		 2891int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2892 void *data, struct drm_file *file_priv)
2893{
2894 struct drm_clip_rect __user *clips_ptr;
2895 struct drm_clip_rect *clips = NULL;
2896 struct drm_mode_fb_dirty_cmd *r = data;
884840aa
JB		 2897 struct drm_framebuffer *fb;
2898 unsigned flags;
2899 int num_clips;
4a1b0714 2900 int ret;
884840aa 2901
fb3b06c8
DA		 2902 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2903 return -EINVAL;
2904
786b99ed 2905 fb = drm_framebuffer_lookup(dev, r->fb_id);
4ccf097f 2906 if (!fb)
37c4e705 2907 return -ENOENT;
884840aa
JB		 2908
2909 num_clips = r->num_clips;
81f6c7f8 2910 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
884840aa
JB		 2911
2912 if (!num_clips != !clips_ptr) {
2913 ret = -EINVAL;
2914 goto out_err1;
2915 }
2916
2917 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2918
2919 /* If userspace annotates copy, clips must come in pairs */
2920 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2921 ret = -EINVAL;
2922 goto out_err1;
2923 }
2924
2925 if (num_clips && clips_ptr) {
a5cd3351
XW		 2926 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2927 ret = -EINVAL;
2928 goto out_err1;
2929 }
884840aa
JB		 2930 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2931 if (!clips) {
2932 ret = -ENOMEM;
2933 goto out_err1;
2934 }
2935
2936 ret = copy_from_user(clips, clips_ptr,
2937 num_clips * sizeof(*clips));
e902a358
DC		 2938 if (ret) {
2939 ret = -EFAULT;
884840aa 2940 goto out_err2;
e902a358 2941 }
884840aa
JB		 2942 }
2943
2944 if (fb->funcs->dirty) {
02b00162
TH		 2945 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
2946 clips, num_clips);
884840aa
JB		 2947 } else {
2948 ret = -ENOSYS;
884840aa
JB		 2949 }
2950
2951out_err2:
2952 kfree(clips);
2953out_err1:
4ccf097f
DV		 2954 drm_framebuffer_unreference(fb);
2955
884840aa
JB		 2956 return ret;
2957}
2958
2959
f453ba04
DA		 2960/**
2961 * drm_fb_release - remove and free the FBs on this file
065a50ed 2962 * @priv: drm file for the ioctl
f453ba04 2963 *
f453ba04
DA		 2964 * Destroy all the FBs associated with @filp.
2965 *
2966 * Called by the user via ioctl.
2967 *
c8e32cc1 2968 * Returns:
f453ba04
DA		 2969 * Zero on success, errno on failure.
2970 */
ea39f835 2971void drm_fb_release(struct drm_file *priv)
f453ba04 2972{
f453ba04
DA		 2973 struct drm_device *dev = priv->minor->dev;
2974 struct drm_framebuffer *fb, *tfb;
2975
4b096ac1 2976 mutex_lock(&priv->fbs_lock);
f453ba04 2977 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2b677e8c
DV		 2978
2979 mutex_lock(&dev->mode_config.fb_lock);
2980 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
2981 __drm_framebuffer_unregister(dev, fb);
2982 mutex_unlock(&dev->mode_config.fb_lock);
2983
4b096ac1 2984 list_del_init(&fb->filp_head);
2b677e8c
DV		 2985
2986 /* This will also drop the fpriv->fbs reference. */
f7eff60e 2987 drm_framebuffer_remove(fb);
f453ba04 2988 }
4b096ac1 2989 mutex_unlock(&priv->fbs_lock);
f453ba04
DA		 2990}
2991
c8e32cc1
DV		 2992/**
2993 * drm_property_create - create a new property type
2994 * @dev: drm device
2995 * @flags: flags specifying the property type
2996 * @name: name of the property
2997 * @num_values: number of pre-defined values
2998 *
2999 * This creates a new generic drm property which can then be attached to a drm
3000 * object with drm_object_attach_property. The returned property object must be
3001 * freed with drm_property_destroy.
3002 *
3003 * Returns:
3004 * A pointer to the newly created property on success, NULL on failure.
3005 */
f453ba04
DA		 3006struct drm_property *drm_property_create(struct drm_device *dev, int flags,
3007 const char *name, int num_values)
3008{
3009 struct drm_property *property = NULL;
6bfc56aa 3010 int ret;
f453ba04
DA		 3011
3012 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
3013 if (!property)
3014 return NULL;
3015
3016 if (num_values) {
3017 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
3018 if (!property->values)
3019 goto fail;
3020 }
3021
6bfc56aa
VS		 3022 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
3023 if (ret)
3024 goto fail;
3025
f453ba04
DA		 3026 property->flags = flags;
3027 property->num_values = num_values;
3028 INIT_LIST_HEAD(&property->enum_blob_list);
3029
471dd2ef 3030 if (name) {
f453ba04 3031 strncpy(property->name, name, DRM_PROP_NAME_LEN);
471dd2ef
VL		 3032 property->name[DRM_PROP_NAME_LEN-1] = '\0';
3033 }
f453ba04
DA		 3034
3035 list_add_tail(&property->head, &dev->mode_config.property_list);
3036 return property;
3037fail:
6bfc56aa 3038 kfree(property->values);
f453ba04
DA		 3039 kfree(property);
3040 return NULL;
3041}
3042EXPORT_SYMBOL(drm_property_create);
3043
c8e32cc1
DV		 3044/**
3045 * drm_property_create - create a new enumeration property type
3046 * @dev: drm device
3047 * @flags: flags specifying the property type
3048 * @name: name of the property
3049 * @props: enumeration lists with property values
3050 * @num_values: number of pre-defined values
3051 *
3052 * This creates a new generic drm property which can then be attached to a drm
3053 * object with drm_object_attach_property. The returned property object must be
3054 * freed with drm_property_destroy.
3055 *
3056 * Userspace is only allowed to set one of the predefined values for enumeration
3057 * properties.
3058 *
3059 * Returns:
3060 * A pointer to the newly created property on success, NULL on failure.
3061 */
4a67d391
SH		 3062struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
3063 const char *name,
3064 const struct drm_prop_enum_list *props,
3065 int num_values)
3066{
3067 struct drm_property *property;
3068 int i, ret;
3069
3070 flags |= DRM_MODE_PROP_ENUM;
3071
3072 property = drm_property_create(dev, flags, name, num_values);
3073 if (!property)
3074 return NULL;
3075
3076 for (i = 0; i < num_values; i++) {
3077 ret = drm_property_add_enum(property, i,
3078 props[i].type,
3079 props[i].name);
3080 if (ret) {
3081 drm_property_destroy(dev, property);
3082 return NULL;
3083 }
3084 }
3085
3086 return property;
3087}
3088EXPORT_SYMBOL(drm_property_create_enum);
3089
c8e32cc1
DV		 3090/**
3091 * drm_property_create - create a new bitmask property type
3092 * @dev: drm device
3093 * @flags: flags specifying the property type
3094 * @name: name of the property
3095 * @props: enumeration lists with property bitflags
3096 * @num_values: number of pre-defined values
3097 *
3098 * This creates a new generic drm property which can then be attached to a drm
3099 * object with drm_object_attach_property. The returned property object must be
3100 * freed with drm_property_destroy.
3101 *
3102 * Compared to plain enumeration properties userspace is allowed to set any
3103 * or'ed together combination of the predefined property bitflag values
3104 *
3105 * Returns:
3106 * A pointer to the newly created property on success, NULL on failure.
3107 */
49e27545
RC		 3108struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
3109 int flags, const char *name,
3110 const struct drm_prop_enum_list *props,
3111 int num_values)
3112{
3113 struct drm_property *property;
3114 int i, ret;
3115
3116 flags |= DRM_MODE_PROP_BITMASK;
3117
3118 property = drm_property_create(dev, flags, name, num_values);
3119 if (!property)
3120 return NULL;
3121
3122 for (i = 0; i < num_values; i++) {
3123 ret = drm_property_add_enum(property, i,
3124 props[i].type,
3125 props[i].name);
3126 if (ret) {
3127 drm_property_destroy(dev, property);
3128 return NULL;
3129 }
3130 }
3131
3132 return property;
3133}
3134EXPORT_SYMBOL(drm_property_create_bitmask);
3135
c8e32cc1
DV		 3136/**
3137 * drm_property_create - create a new ranged property type
3138 * @dev: drm device
3139 * @flags: flags specifying the property type
3140 * @name: name of the property
3141 * @min: minimum value of the property
3142 * @max: maximum value of the property
3143 *
3144 * This creates a new generic drm property which can then be attached to a drm
3145 * object with drm_object_attach_property. The returned property object must be
3146 * freed with drm_property_destroy.
3147 *
3148 * Userspace is allowed to set any interger value in the (min, max) range
3149 * inclusive.
3150 *
3151 * Returns:
3152 * A pointer to the newly created property on success, NULL on failure.
3153 */
d9bc3c02
SH		 3154struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
3155 const char *name,
3156 uint64_t min, uint64_t max)
3157{
3158 struct drm_property *property;
3159
3160 flags |= DRM_MODE_PROP_RANGE;
3161
3162 property = drm_property_create(dev, flags, name, 2);
3163 if (!property)
3164 return NULL;
3165
3166 property->values[0] = min;
3167 property->values[1] = max;
3168
3169 return property;
3170}
3171EXPORT_SYMBOL(drm_property_create_range);
3172
c8e32cc1
DV		 3173/**
3174 * drm_property_add_enum - add a possible value to an enumeration property
3175 * @property: enumeration property to change
3176 * @index: index of the new enumeration
3177 * @value: value of the new enumeration
3178 * @name: symbolic name of the new enumeration
3179 *
3180 * This functions adds enumerations to a property.
3181 *
3182 * It's use is deprecated, drivers should use one of the more specific helpers
3183 * to directly create the property with all enumerations already attached.
3184 *
3185 * Returns:
3186 * Zero on success, error code on failure.
3187 */
f453ba04
DA		 3188int drm_property_add_enum(struct drm_property *property, int index,
3189 uint64_t value, const char *name)
3190{
3191 struct drm_property_enum *prop_enum;
3192
49e27545
RC		 3193 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
3194 return -EINVAL;
3195
3196 /*
3197 * Bitmask enum properties have the additional constraint of values
3198 * from 0 to 63
3199 */
3200 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
f453ba04
DA		 3201 return -EINVAL;
3202
3203 if (!list_empty(&property->enum_blob_list)) {
3204 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3205 if (prop_enum->value == value) {
3206 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3207 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3208 return 0;
3209 }
3210 }
3211 }
3212
3213 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
3214 if (!prop_enum)
3215 return -ENOMEM;
3216
3217 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
3218 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
3219 prop_enum->value = value;
3220
3221 property->values[index] = value;
3222 list_add_tail(&prop_enum->head, &property->enum_blob_list);
3223 return 0;
3224}
3225EXPORT_SYMBOL(drm_property_add_enum);
3226
c8e32cc1
DV		 3227/**
3228 * drm_property_destroy - destroy a drm property
3229 * @dev: drm device
3230 * @property: property to destry
3231 *
3232 * This function frees a property including any attached resources like
3233 * enumeration values.
3234 */
f453ba04
DA		 3235void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
3236{
3237 struct drm_property_enum *prop_enum, *pt;
3238
3239 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
3240 list_del(&prop_enum->head);
3241 kfree(prop_enum);
3242 }
3243
3244 if (property->num_values)
3245 kfree(property->values);
3246 drm_mode_object_put(dev, &property->base);
3247 list_del(&property->head);
3248 kfree(property);
3249}
3250EXPORT_SYMBOL(drm_property_destroy);
3251
c8e32cc1
DV		 3252/**
3253 * drm_object_attach_property - attach a property to a modeset object
3254 * @obj: drm modeset object
3255 * @property: property to attach
3256 * @init_val: initial value of the property
3257 *
3258 * This attaches the given property to the modeset object with the given initial
3259 * value. Currently this function cannot fail since the properties are stored in
3260 * a statically sized array.
3261 */
c543188a
PZ		 3262void drm_object_attach_property(struct drm_mode_object *obj,
3263 struct drm_property *property,
3264 uint64_t init_val)
3265{
7f88a9be 3266 int count = obj->properties->count;
c543188a 3267
7f88a9be
PZ		 3268 if (count == DRM_OBJECT_MAX_PROPERTY) {
3269 WARN(1, "Failed to attach object property (type: 0x%x). Please "
3270 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
3271 "you see this message on the same object type.\n",
3272 obj->type);
3273 return;
c543188a
PZ		 3274 }
3275
7f88a9be
PZ		 3276 obj->properties->ids[count] = property->base.id;
3277 obj->properties->values[count] = init_val;
3278 obj->properties->count++;
c543188a
PZ		 3279}
3280EXPORT_SYMBOL(drm_object_attach_property);
3281
c8e32cc1
DV		 3282/**
3283 * drm_object_property_set_value - set the value of a property
3284 * @obj: drm mode object to set property value for
3285 * @property: property to set
3286 * @val: value the property should be set to
3287 *
3288 * This functions sets a given property on a given object. This function only
3289 * changes the software state of the property, it does not call into the
3290 * driver's ->set_property callback.
3291 *
3292 * Returns:
3293 * Zero on success, error code on failure.
3294 */
c543188a
PZ		 3295int drm_object_property_set_value(struct drm_mode_object *obj,
3296 struct drm_property *property, uint64_t val)
3297{
3298 int i;
3299
7f88a9be 3300 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3301 if (obj->properties->ids[i] == property->base.id) {
3302 obj->properties->values[i] = val;
3303 return 0;
3304 }
3305 }
3306
3307 return -EINVAL;
3308}
3309EXPORT_SYMBOL(drm_object_property_set_value);
3310
c8e32cc1
DV		 3311/**
3312 * drm_object_property_get_value - retrieve the value of a property
3313 * @obj: drm mode object to get property value from
3314 * @property: property to retrieve
3315 * @val: storage for the property value
3316 *
3317 * This function retrieves the softare state of the given property for the given
3318 * property. Since there is no driver callback to retrieve the current property
3319 * value this might be out of sync with the hardware, depending upon the driver
3320 * and property.
3321 *
3322 * Returns:
3323 * Zero on success, error code on failure.
3324 */
c543188a
PZ		 3325int drm_object_property_get_value(struct drm_mode_object *obj,
3326 struct drm_property *property, uint64_t *val)
3327{
3328 int i;
3329
7f88a9be 3330 for (i = 0; i < obj->properties->count; i++) {
c543188a
PZ		 3331 if (obj->properties->ids[i] == property->base.id) {
3332 *val = obj->properties->values[i];
3333 return 0;
3334 }
3335 }
3336
3337 return -EINVAL;
3338}
3339EXPORT_SYMBOL(drm_object_property_get_value);
3340
c8e32cc1
DV		 3341/**
3342 * drm_mode_getproperty_ioctl - get the current value of a connector's property
3343 * @dev: DRM device
3344 * @data: ioctl data
3345 * @file_priv: DRM file info
3346 *
3347 * This function retrieves the current value for an connectors's property.
3348 *
3349 * Called by the user via ioctl.
3350 *
3351 * Returns:
3352 * Zero on success, errno on failure.
3353 */
f453ba04
DA		 3354int drm_mode_getproperty_ioctl(struct drm_device *dev,
3355 void *data, struct drm_file *file_priv)
3356{
3357 struct drm_mode_object *obj;
3358 struct drm_mode_get_property *out_resp = data;
3359 struct drm_property *property;
3360 int enum_count = 0;
3361 int blob_count = 0;
3362 int value_count = 0;
3363 int ret = 0, i;
3364 int copied;
3365 struct drm_property_enum *prop_enum;
3366 struct drm_mode_property_enum __user *enum_ptr;
3367 struct drm_property_blob *prop_blob;
81f6c7f8 3368 uint32_t __user *blob_id_ptr;
f453ba04
DA		 3369 uint64_t __user *values_ptr;
3370 uint32_t __user *blob_length_ptr;
3371
fb3b06c8
DA		 3372 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3373 return -EINVAL;
3374
84849903 3375 drm_modeset_lock_all(dev);
f453ba04
DA		 3376 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
3377 if (!obj) {
f27657f2 3378 ret = -ENOENT;
f453ba04
DA		 3379 goto done;
3380 }
3381 property = obj_to_property(obj);
3382
49e27545 3383 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3384 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3385 enum_count++;
3386 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3387 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3388 blob_count++;
3389 }
3390
3391 value_count = property->num_values;
3392
3393 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3394 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3395 out_resp->flags = property->flags;
3396
3397 if ((out_resp->count_values >= value_count) && value_count) {
81f6c7f8 3398 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3399 for (i = 0; i < value_count; i++) {
3400 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3401 ret = -EFAULT;
3402 goto done;
3403 }
3404 }
3405 }
3406 out_resp->count_values = value_count;
3407
49e27545 3408 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
f453ba04
DA		 3409 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3410 copied = 0;
81f6c7f8 3411 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
f453ba04
DA		 3412 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3413
3414 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3415 ret = -EFAULT;
3416 goto done;
3417 }
3418
3419 if (copy_to_user(&enum_ptr[copied].name,
3420 &prop_enum->name, DRM_PROP_NAME_LEN)) {
3421 ret = -EFAULT;
3422 goto done;
3423 }
3424 copied++;
3425 }
3426 }
3427 out_resp->count_enum_blobs = enum_count;
3428 }
3429
3430 if (property->flags & DRM_MODE_PROP_BLOB) {
3431 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3432 copied = 0;
81f6c7f8
VS		 3433 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3434 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
f453ba04
DA		 3435
3436 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3437 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3438 ret = -EFAULT;
3439 goto done;
3440 }
3441
3442 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3443 ret = -EFAULT;
3444 goto done;
3445 }
3446
3447 copied++;
3448 }
3449 }
3450 out_resp->count_enum_blobs = blob_count;
3451 }
3452done:
84849903 3453 drm_modeset_unlock_all(dev);
f453ba04
DA		 3454 return ret;
3455}
3456
3457static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3458 void *data)
3459{
3460 struct drm_property_blob *blob;
6bfc56aa 3461 int ret;
f453ba04
DA		 3462
3463 if (!length || !data)
3464 return NULL;
3465
3466 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
3467 if (!blob)
3468 return NULL;
3469
6bfc56aa
VS		 3470 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3471 if (ret) {
3472 kfree(blob);
3473 return NULL;
3474 }
3475
f453ba04
DA		 3476 blob->length = length;
3477
3478 memcpy(blob->data, data, length);
3479
f453ba04
DA		 3480 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3481 return blob;
3482}
3483
3484static void drm_property_destroy_blob(struct drm_device *dev,
3485 struct drm_property_blob *blob)
3486{
3487 drm_mode_object_put(dev, &blob->base);
3488 list_del(&blob->head);
3489 kfree(blob);
3490}
3491
c8e32cc1
DV		 3492/**
3493 * drm_mode_getblob_ioctl - get the contents of a blob property value
3494 * @dev: DRM device
3495 * @data: ioctl data
3496 * @file_priv: DRM file info
3497 *
3498 * This function retrieves the contents of a blob property. The value stored in
3499 * an object's blob property is just a normal modeset object id.
3500 *
3501 * Called by the user via ioctl.
3502 *
3503 * Returns:
3504 * Zero on success, errno on failure.
3505 */
f453ba04
DA		 3506int drm_mode_getblob_ioctl(struct drm_device *dev,
3507 void *data, struct drm_file *file_priv)
3508{
3509 struct drm_mode_object *obj;
3510 struct drm_mode_get_blob *out_resp = data;
3511 struct drm_property_blob *blob;
3512 int ret = 0;
81f6c7f8 3513 void __user *blob_ptr;
f453ba04 3514
fb3b06c8
DA		 3515 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3516 return -EINVAL;
3517
84849903 3518 drm_modeset_lock_all(dev);
f453ba04
DA		 3519 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3520 if (!obj) {
f27657f2 3521 ret = -ENOENT;
f453ba04
DA		 3522 goto done;
3523 }
3524 blob = obj_to_blob(obj);
3525
3526 if (out_resp->length == blob->length) {
81f6c7f8 3527 blob_ptr = (void __user *)(unsigned long)out_resp->data;
f453ba04
DA		 3528 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3529 ret = -EFAULT;
3530 goto done;
3531 }
3532 }
3533 out_resp->length = blob->length;
3534
3535done:
84849903 3536 drm_modeset_unlock_all(dev);
f453ba04
DA		 3537 return ret;
3538}
3539
c8e32cc1
DV		 3540/**
3541 * drm_mode_connector_update_edid_property - update the edid property of a connector
3542 * @connector: drm connector
3543 * @edid: new value of the edid property
3544 *
3545 * This function creates a new blob modeset object and assigns its id to the
3546 * connector's edid property.
3547 *
3548 * Returns:
3549 * Zero on success, errno on failure.
3550 */
f453ba04
DA		 3551int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3552 struct edid *edid)
3553{
3554 struct drm_device *dev = connector->dev;
4a1b0714 3555 int ret, size;
f453ba04
DA		 3556
3557 if (connector->edid_blob_ptr)
3558 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3559
3560 /* Delete edid, when there is none. */
3561 if (!edid) {
3562 connector->edid_blob_ptr = NULL;
58495563 3563 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
f453ba04
DA		 3564 return ret;
3565 }
3566
7466f4cc
AJ		 3567 size = EDID_LENGTH * (1 + edid->extensions);
3568 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3569 size, edid);
e655d122
SK		 3570 if (!connector->edid_blob_ptr)
3571 return -EINVAL;
f453ba04 3572
58495563 3573 ret = drm_object_property_set_value(&connector->base,
f453ba04
DA		 3574 dev->mode_config.edid_property,
3575 connector->edid_blob_ptr->base.id);
3576
3577 return ret;
3578}
3579EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3580
26a34815 3581static bool drm_property_change_is_valid(struct drm_property *property,
592c20ee 3582 uint64_t value)
26a34815
PZ		 3583{
3584 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3585 return false;
3586 if (property->flags & DRM_MODE_PROP_RANGE) {
3587 if (value < property->values[0] || value > property->values[1])
3588 return false;
3589 return true;
49e27545
RC		 3590 } else if (property->flags & DRM_MODE_PROP_BITMASK) {
3591 int i;
592c20ee 3592 uint64_t valid_mask = 0;
49e27545
RC		 3593 for (i = 0; i < property->num_values; i++)
3594 valid_mask |= (1ULL << property->values[i]);
3595 return !(value & ~valid_mask);
c4a56750
VS		 3596 } else if (property->flags & DRM_MODE_PROP_BLOB) {
3597 /* Only the driver knows */
3598 return true;
26a34815
PZ		 3599 } else {
3600 int i;
3601 for (i = 0; i < property->num_values; i++)
3602 if (property->values[i] == value)
3603 return true;
3604 return false;
3605 }
3606}
3607
c8e32cc1
DV		 3608/**
3609 * drm_mode_connector_property_set_ioctl - set the current value of a connector property
3610 * @dev: DRM device
3611 * @data: ioctl data
3612 * @file_priv: DRM file info
3613 *
3614 * This function sets the current value for a connectors's property. It also
3615 * calls into a driver's ->set_property callback to update the hardware state
3616 *
3617 * Called by the user via ioctl.
3618 *
3619 * Returns:
3620 * Zero on success, errno on failure.
3621 */
f453ba04
DA		 3622int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3623 void *data, struct drm_file *file_priv)
3624{
0057d8dd
PZ		 3625 struct drm_mode_connector_set_property *conn_set_prop = data;
3626 struct drm_mode_obj_set_property obj_set_prop = {
3627 .value = conn_set_prop->value,
3628 .prop_id = conn_set_prop->prop_id,
3629 .obj_id = conn_set_prop->connector_id,
3630 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3631 };
fb3b06c8 3632
0057d8dd
PZ		 3633 /* It does all the locking and checking we need */
3634 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
f453ba04
DA		 3635}
3636
c543188a
PZ		 3637static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3638 struct drm_property *property,
3639 uint64_t value)
3640{
3641 int ret = -EINVAL;
3642 struct drm_connector *connector = obj_to_connector(obj);
3643
3644 /* Do DPMS ourselves */
3645 if (property == connector->dev->mode_config.dpms_property) {
3646 if (connector->funcs->dpms)
3647 (*connector->funcs->dpms)(connector, (int)value);
3648 ret = 0;
3649 } else if (connector->funcs->set_property)
3650 ret = connector->funcs->set_property(connector, property, value);
3651
3652 /* store the property value if successful */
3653 if (!ret)
58495563 3654 drm_object_property_set_value(&connector->base, property, value);
c543188a
PZ		 3655 return ret;
3656}
3657
bffd9de0
PZ		 3658static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3659 struct drm_property *property,
3660 uint64_t value)
3661{
3662 int ret = -EINVAL;
3663 struct drm_crtc *crtc = obj_to_crtc(obj);
3664
3665 if (crtc->funcs->set_property)
3666 ret = crtc->funcs->set_property(crtc, property, value);
3667 if (!ret)
3668 drm_object_property_set_value(obj, property, value);
3669
3670 return ret;
3671}
3672
4d93914a
RC		 3673static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3674 struct drm_property *property,
3675 uint64_t value)
3676{
3677 int ret = -EINVAL;
3678 struct drm_plane *plane = obj_to_plane(obj);
3679
3680 if (plane->funcs->set_property)
3681 ret = plane->funcs->set_property(plane, property, value);
3682 if (!ret)
3683 drm_object_property_set_value(obj, property, value);
3684
3685 return ret;
3686}
3687
c8e32cc1
DV		 3688/**
3689 * drm_mode_getproperty_ioctl - get the current value of a object's property
3690 * @dev: DRM device
3691 * @data: ioctl data
3692 * @file_priv: DRM file info
3693 *
3694 * This function retrieves the current value for an object's property. Compared
3695 * to the connector specific ioctl this one is extended to also work on crtc and
3696 * plane objects.
3697 *
3698 * Called by the user via ioctl.
3699 *
3700 * Returns:
3701 * Zero on success, errno on failure.
3702 */
c543188a
PZ		 3703int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3704 struct drm_file *file_priv)
3705{
3706 struct drm_mode_obj_get_properties *arg = data;
3707 struct drm_mode_object *obj;
3708 int ret = 0;
3709 int i;
3710 int copied = 0;
3711 int props_count = 0;
3712 uint32_t __user *props_ptr;
3713 uint64_t __user *prop_values_ptr;
3714
3715 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3716 return -EINVAL;
3717
84849903 3718 drm_modeset_lock_all(dev);
c543188a
PZ		 3719
3720 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3721 if (!obj) {
f27657f2 3722 ret = -ENOENT;
c543188a
PZ		 3723 goto out;
3724 }
3725 if (!obj->properties) {
3726 ret = -EINVAL;
3727 goto out;
3728 }
3729
7f88a9be 3730 props_count = obj->properties->count;
c543188a
PZ		 3731
3732 /* This ioctl is called twice, once to determine how much space is
3733 * needed, and the 2nd time to fill it. */
3734 if ((arg->count_props >= props_count) && props_count) {
3735 copied = 0;
3736 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3737 prop_values_ptr = (uint64_t __user *)(unsigned long)
3738 (arg->prop_values_ptr);
3739 for (i = 0; i < props_count; i++) {
3740 if (put_user(obj->properties->ids[i],
3741 props_ptr + copied)) {
3742 ret = -EFAULT;
3743 goto out;
3744 }
3745 if (put_user(obj->properties->values[i],
3746 prop_values_ptr + copied)) {
3747 ret = -EFAULT;
3748 goto out;
3749 }
3750 copied++;
3751 }
3752 }
3753 arg->count_props = props_count;
3754out:
84849903 3755 drm_modeset_unlock_all(dev);
c543188a
PZ		 3756 return ret;
3757}
3758
c8e32cc1
DV		 3759/**
3760 * drm_mode_obj_set_property_ioctl - set the current value of an object's property
3761 * @dev: DRM device
3762 * @data: ioctl data
3763 * @file_priv: DRM file info
3764 *
3765 * This function sets the current value for an object's property. It also calls
3766 * into a driver's ->set_property callback to update the hardware state.
3767 * Compared to the connector specific ioctl this one is extended to also work on
3768 * crtc and plane objects.
3769 *
3770 * Called by the user via ioctl.
3771 *
3772 * Returns:
3773 * Zero on success, errno on failure.
3774 */
c543188a
PZ		 3775int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3776 struct drm_file *file_priv)
3777{
3778 struct drm_mode_obj_set_property *arg = data;
3779 struct drm_mode_object *arg_obj;
3780 struct drm_mode_object *prop_obj;
3781 struct drm_property *property;
3782 int ret = -EINVAL;
3783 int i;
3784
3785 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3786 return -EINVAL;
3787
84849903 3788 drm_modeset_lock_all(dev);
c543188a
PZ		 3789
3790 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
f27657f2
VS		 3791 if (!arg_obj) {
3792 ret = -ENOENT;
c543188a 3793 goto out;
f27657f2 3794 }
c543188a
PZ		 3795 if (!arg_obj->properties)
3796 goto out;
3797
7f88a9be 3798 for (i = 0; i < arg_obj->properties->count; i++)
c543188a
PZ		 3799 if (arg_obj->properties->ids[i] == arg->prop_id)
3800 break;
3801
7f88a9be 3802 if (i == arg_obj->properties->count)
c543188a
PZ		 3803 goto out;
3804
3805 prop_obj = drm_mode_object_find(dev, arg->prop_id,
3806 DRM_MODE_OBJECT_PROPERTY);
f27657f2
VS		 3807 if (!prop_obj) {
3808 ret = -ENOENT;
c543188a 3809 goto out;
f27657f2 3810 }
c543188a
PZ		 3811 property = obj_to_property(prop_obj);
3812
3813 if (!drm_property_change_is_valid(property, arg->value))
3814 goto out;
3815
3816 switch (arg_obj->type) {
3817 case DRM_MODE_OBJECT_CONNECTOR:
3818 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3819 arg->value);
3820 break;
bffd9de0
PZ		 3821 case DRM_MODE_OBJECT_CRTC:
3822 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3823 break;
4d93914a
RC		 3824 case DRM_MODE_OBJECT_PLANE:
3825 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3826 break;
c543188a
PZ		 3827 }
3828
3829out:
84849903 3830 drm_modeset_unlock_all(dev);
c543188a
PZ		 3831 return ret;
3832}
3833
c8e32cc1
DV		 3834/**
3835 * drm_mode_connector_attach_encoder - attach a connector to an encoder
3836 * @connector: connector to attach
3837 * @encoder: encoder to attach @connector to
3838 *
3839 * This function links up a connector to an encoder. Note that the routing
3840 * restrictions between encoders and crtcs are exposed to userspace through the
3841 * possible_clones and possible_crtcs bitmasks.
3842 *
3843 * Returns:
3844 * Zero on success, errno on failure.
3845 */
f453ba04
DA		 3846int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3847 struct drm_encoder *encoder)
3848{
3849 int i;
3850
3851 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3852 if (connector->encoder_ids[i] == 0) {
3853 connector->encoder_ids[i] = encoder->base.id;
3854 return 0;
3855 }
3856 }
3857 return -ENOMEM;
3858}
3859EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3860
c8e32cc1
DV		 3861/**
3862 * drm_mode_crtc_set_gamma_size - set the gamma table size
3863 * @crtc: CRTC to set the gamma table size for
3864 * @gamma_size: size of the gamma table
3865 *
3866 * Drivers which support gamma tables should set this to the supported gamma
3867 * table size when initializing the CRTC. Currently the drm core only supports a
3868 * fixed gamma table size.
3869 *
3870 * Returns:
3871 * Zero on success, errno on failure.
3872 */
4cae5b84 3873int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
c8e32cc1 3874 int gamma_size)
f453ba04
DA		 3875{
3876 crtc->gamma_size = gamma_size;
3877
3878 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3879 if (!crtc->gamma_store) {
3880 crtc->gamma_size = 0;
4cae5b84 3881 return -ENOMEM;
f453ba04
DA		 3882 }
3883
4cae5b84 3884 return 0;
f453ba04
DA		 3885}
3886EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3887
c8e32cc1
DV		 3888/**
3889 * drm_mode_gamma_set_ioctl - set the gamma table
3890 * @dev: DRM device
3891 * @data: ioctl data
3892 * @file_priv: DRM file info
3893 *
3894 * Set the gamma table of a CRTC to the one passed in by the user. Userspace can
3895 * inquire the required gamma table size through drm_mode_gamma_get_ioctl.
3896 *
3897 * Called by the user via ioctl.
3898 *
3899 * Returns:
3900 * Zero on success, errno on failure.
3901 */
f453ba04
DA		 3902int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3903 void *data, struct drm_file *file_priv)
3904{
3905 struct drm_mode_crtc_lut *crtc_lut = data;
3906 struct drm_mode_object *obj;
3907 struct drm_crtc *crtc;
3908 void *r_base, *g_base, *b_base;
3909 int size;
3910 int ret = 0;
3911
fb3b06c8
DA		 3912 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3913 return -EINVAL;
3914
84849903 3915 drm_modeset_lock_all(dev);
f453ba04
DA		 3916 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3917 if (!obj) {
f27657f2 3918 ret = -ENOENT;
f453ba04
DA		 3919 goto out;
3920 }
3921 crtc = obj_to_crtc(obj);
3922
ebe0f244
LP		 3923 if (crtc->funcs->gamma_set == NULL) {
3924 ret = -ENOSYS;
3925 goto out;
3926 }
3927
f453ba04
DA		 3928 /* memcpy into gamma store */
3929 if (crtc_lut->gamma_size != crtc->gamma_size) {
3930 ret = -EINVAL;
3931 goto out;
3932 }
3933
3934 size = crtc_lut->gamma_size * (sizeof(uint16_t));
3935 r_base = crtc->gamma_store;
3936 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
3937 ret = -EFAULT;
3938 goto out;
3939 }
3940
3941 g_base = r_base + size;
3942 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
3943 ret = -EFAULT;
3944 goto out;
3945 }
3946
3947 b_base = g_base + size;
3948 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
3949 ret = -EFAULT;
3950 goto out;
3951 }
3952
7203425a 3953 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
f453ba04
DA		 3954
3955out:
84849903 3956 drm_modeset_unlock_all(dev);
f453ba04
DA		 3957 return ret;
3958
3959}
3960
c8e32cc1
DV		 3961/**
3962 * drm_mode_gamma_get_ioctl - get the gamma table
3963 * @dev: DRM device
3964 * @data: ioctl data
3965 * @file_priv: DRM file info
3966 *
3967 * Copy the current gamma table into the storage provided. This also provides
3968 * the gamma table size the driver expects, which can be used to size the
3969 * allocated storage.
3970 *
3971 * Called by the user via ioctl.
3972 *
3973 * Returns:
3974 * Zero on success, errno on failure.
3975 */
f453ba04
DA		 3976int drm_mode_gamma_get_ioctl(struct drm_device *dev,
3977 void *data, struct drm_file *file_priv)
3978{
3979 struct drm_mode_crtc_lut *crtc_lut = data;
3980 struct drm_mode_object *obj;
3981 struct drm_crtc *crtc;
3982 void *r_base, *g_base, *b_base;
3983 int size;
3984 int ret = 0;
3985
fb3b06c8
DA		 3986 if (!drm_core_check_feature(dev, DRIVER_MODESET))
3987 return -EINVAL;
3988
84849903 3989 drm_modeset_lock_all(dev);
f453ba04
DA		 3990 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3991 if (!obj) {
f27657f2 3992 ret = -ENOENT;
f453ba04
DA		 3993 goto out;
3994 }
3995 crtc = obj_to_crtc(obj);
3996
3997 /* memcpy into gamma store */
3998 if (crtc_lut->gamma_size != crtc->gamma_size) {
3999 ret = -EINVAL;
4000 goto out;
4001 }
4002
4003 size = crtc_lut->gamma_size * (sizeof(uint16_t));
4004 r_base = crtc->gamma_store;
4005 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
4006 ret = -EFAULT;
4007 goto out;
4008 }
4009
4010 g_base = r_base + size;
4011 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
4012 ret = -EFAULT;
4013 goto out;
4014 }
4015
4016 b_base = g_base + size;
4017 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
4018 ret = -EFAULT;
4019 goto out;
4020 }
4021out:
84849903 4022 drm_modeset_unlock_all(dev);
f453ba04
DA		 4023 return ret;
4024}
d91d8a3f 4025
c8e32cc1
DV		 4026/**
4027 * drm_mode_page_flip_ioctl - schedule an asynchronous fb update
4028 * @dev: DRM device
4029 * @data: ioctl data
4030 * @file_priv: DRM file info
4031 *
4032 * This schedules an asynchronous update on a given CRTC, called page flip.
4033 * Optionally a drm event is generated to signal the completion of the event.
4034 * Generic drivers cannot assume that a pageflip with changed framebuffer
4035 * properties (including driver specific metadata like tiling layout) will work,
4036 * but some drivers support e.g. pixel format changes through the pageflip
4037 * ioctl.
4038 *
4039 * Called by the user via ioctl.
4040 *
4041 * Returns:
4042 * Zero on success, errno on failure.
4043 */
d91d8a3f
KH		 4044int drm_mode_page_flip_ioctl(struct drm_device *dev,
4045 void *data, struct drm_file *file_priv)
4046{
4047 struct drm_mode_crtc_page_flip *page_flip = data;
4048 struct drm_mode_object *obj;
4049 struct drm_crtc *crtc;
b0d12325 4050 struct drm_framebuffer *fb = NULL, *old_fb = NULL;
d91d8a3f
KH		 4051 struct drm_pending_vblank_event *e = NULL;
4052 unsigned long flags;
4053 int ret = -EINVAL;
4054
4055 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
4056 page_flip->reserved != 0)
4057 return -EINVAL;
4058
62f2104f
KP		 4059 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
4060 return -EINVAL;
4061
d91d8a3f
KH		 4062 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
4063 if (!obj)
f27657f2 4064 return -ENOENT;
d91d8a3f
KH		 4065 crtc = obj_to_crtc(obj);
4066
b4d5e7d1 4067 mutex_lock(&crtc->mutex);
90c1efdd
CW		 4068 if (crtc->fb == NULL) {
4069 /* The framebuffer is currently unbound, presumably
4070 * due to a hotplug event, that userspace has not
4071 * yet discovered.
4072 */
4073 ret = -EBUSY;
4074 goto out;
4075 }
4076
d91d8a3f
KH		 4077 if (crtc->funcs->page_flip == NULL)
4078 goto out;
4079
786b99ed 4080 fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
37c4e705
VS		 4081 if (!fb) {
4082 ret = -ENOENT;
d91d8a3f 4083 goto out;
37c4e705 4084 }
d91d8a3f 4085
c11e9283
DL		 4086 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
4087 if (ret)
5f61bb42 4088 goto out;
5f61bb42 4089
909d9cda
LP		 4090 if (crtc->fb->pixel_format != fb->pixel_format) {
4091 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
4092 ret = -EINVAL;
4093 goto out;
4094 }
4095
d91d8a3f
KH		 4096 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4097 ret = -ENOMEM;
4098 spin_lock_irqsave(&dev->event_lock, flags);
4099 if (file_priv->event_space < sizeof e->event) {
4100 spin_unlock_irqrestore(&dev->event_lock, flags);
4101 goto out;
4102 }
4103 file_priv->event_space -= sizeof e->event;
4104 spin_unlock_irqrestore(&dev->event_lock, flags);
4105
4106 e = kzalloc(sizeof *e, GFP_KERNEL);
4107 if (e == NULL) {
4108 spin_lock_irqsave(&dev->event_lock, flags);
4109 file_priv->event_space += sizeof e->event;
4110 spin_unlock_irqrestore(&dev->event_lock, flags);
4111 goto out;
4112 }
4113
7bd4d7be 4114 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
d91d8a3f
KH		 4115 e->event.base.length = sizeof e->event;
4116 e->event.user_data = page_flip->user_data;
4117 e->base.event = &e->event.base;
4118 e->base.file_priv = file_priv;
4119 e->base.destroy =
4120 (void (*) (struct drm_pending_event *)) kfree;
4121 }
4122
b0d12325 4123 old_fb = crtc->fb;
ed8d1975 4124 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
d91d8a3f 4125 if (ret) {
aef6a7ee
JS		 4126 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
4127 spin_lock_irqsave(&dev->event_lock, flags);
4128 file_priv->event_space += sizeof e->event;
4129 spin_unlock_irqrestore(&dev->event_lock, flags);
4130 kfree(e);
4131 }
b0d12325
DV		 4132 /* Keep the old fb, don't unref it. */
4133 old_fb = NULL;
4134 } else {
8cf1e981
TR		 4135 /*
4136 * Warn if the driver hasn't properly updated the crtc->fb
4137 * field to reflect that the new framebuffer is now used.
4138 * Failing to do so will screw with the reference counting
4139 * on framebuffers.
4140 */
4141 WARN_ON(crtc->fb != fb);
b0d12325
DV		 4142 /* Unref only the old framebuffer. */
4143 fb = NULL;
d91d8a3f
KH		 4144 }
4145
4146out:
b0d12325
DV		 4147 if (fb)
4148 drm_framebuffer_unreference(fb);
4149 if (old_fb)
4150 drm_framebuffer_unreference(old_fb);
b4d5e7d1
DV		 4151 mutex_unlock(&crtc->mutex);
4152
d91d8a3f
KH		 4153 return ret;
4154}
eb033556 4155
c8e32cc1
DV		 4156/**
4157 * drm_mode_config_reset - call ->reset callbacks
4158 * @dev: drm device
4159 *
4160 * This functions calls all the crtc's, encoder's and connector's ->reset
4161 * callback. Drivers can use this in e.g. their driver load or resume code to
4162 * reset hardware and software state.
4163 */
eb033556
CW		 4164void drm_mode_config_reset(struct drm_device *dev)
4165{
4166 struct drm_crtc *crtc;
4167 struct drm_encoder *encoder;
4168 struct drm_connector *connector;
4169
4170 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
4171 if (crtc->funcs->reset)
4172 crtc->funcs->reset(crtc);
4173
4174 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
4175 if (encoder->funcs->reset)
4176 encoder->funcs->reset(encoder);
4177
5e2cb2f6
DV		 4178 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4179 connector->status = connector_status_unknown;
4180
eb033556
CW		 4181 if (connector->funcs->reset)
4182 connector->funcs->reset(connector);
5e2cb2f6 4183 }
eb033556
CW		 4184}
4185EXPORT_SYMBOL(drm_mode_config_reset);
ff72145b 4186
c8e32cc1
DV		 4187/**
4188 * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
4189 * @dev: DRM device
4190 * @data: ioctl data
4191 * @file_priv: DRM file info
4192 *
4193 * This creates a new dumb buffer in the driver's backing storage manager (GEM,
4194 * TTM or something else entirely) and returns the resulting buffer handle. This
4195 * handle can then be wrapped up into a framebuffer modeset object.
4196 *
4197 * Note that userspace is not allowed to use such objects for render
4198 * acceleration - drivers must create their own private ioctls for such a use
4199 * case.
4200 *
4201 * Called by the user via ioctl.
4202 *
4203 * Returns:
4204 * Zero on success, errno on failure.
4205 */
ff72145b
DA		 4206int drm_mode_create_dumb_ioctl(struct drm_device *dev,
4207 void *data, struct drm_file *file_priv)
4208{
4209 struct drm_mode_create_dumb *args = data;
b28cd41f 4210 u32 cpp, stride, size;
ff72145b
DA		 4211
4212 if (!dev->driver->dumb_create)
4213 return -ENOSYS;
b28cd41f
DH		 4214 if (!args->width || !args->height || !args->bpp)
4215 return -EINVAL;
4216
4217 /* overflow checks for 32bit size calculations */
4218 cpp = DIV_ROUND_UP(args->bpp, 8);
4219 if (cpp > 0xffffffffU / args->width)
4220 return -EINVAL;
4221 stride = cpp * args->width;
4222 if (args->height > 0xffffffffU / stride)
4223 return -EINVAL;
4224
4225 /* test for wrap-around */
4226 size = args->height * stride;
4227 if (PAGE_ALIGN(size) == 0)
4228 return -EINVAL;
4229
ff72145b
DA		 4230 return dev->driver->dumb_create(file_priv, dev, args);
4231}
4232
c8e32cc1
DV		 4233/**
4234 * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
4235 * @dev: DRM device
4236 * @data: ioctl data
4237 * @file_priv: DRM file info
4238 *
4239 * Allocate an offset in the drm device node's address space to be able to
4240 * memory map a dumb buffer.
4241 *
4242 * Called by the user via ioctl.
4243 *
4244 * Returns:
4245 * Zero on success, errno on failure.
4246 */
ff72145b
DA		 4247int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
4248 void *data, struct drm_file *file_priv)
4249{
4250 struct drm_mode_map_dumb *args = data;
4251
4252 /* call driver ioctl to get mmap offset */
4253 if (!dev->driver->dumb_map_offset)
4254 return -ENOSYS;
4255
4256 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
4257}
4258
c8e32cc1
DV		 4259/**
4260 * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
4261 * @dev: DRM device
4262 * @data: ioctl data
4263 * @file_priv: DRM file info
4264 *
4265 * This destroys the userspace handle for the given dumb backing storage buffer.
4266 * Since buffer objects must be reference counted in the kernel a buffer object
4267 * won't be immediately freed if a framebuffer modeset object still uses it.
4268 *
4269 * Called by the user via ioctl.
4270 *
4271 * Returns:
4272 * Zero on success, errno on failure.
4273 */
ff72145b
DA		 4274int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
4275 void *data, struct drm_file *file_priv)
4276{
4277 struct drm_mode_destroy_dumb *args = data;
4278
4279 if (!dev->driver->dumb_destroy)
4280 return -ENOSYS;
4281
4282 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
4283}
248dbc23 4284
c8e32cc1
DV		 4285/**
4286 * drm_fb_get_bpp_depth - get the bpp/depth values for format
4287 * @format: pixel format (DRM_FORMAT_*)
4288 * @depth: storage for the depth value
4289 * @bpp: storage for the bpp value
4290 *
4291 * This only supports RGB formats here for compat with code that doesn't use
4292 * pixel formats directly yet.
248dbc23
DA		 4293 */
4294void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
4295 int *bpp)
4296{
4297 switch (format) {
c51a6bc5 4298 case DRM_FORMAT_C8:
04b3924d
VS		 4299 case DRM_FORMAT_RGB332:
4300 case DRM_FORMAT_BGR233:
248dbc23
DA		 4301 *depth = 8;
4302 *bpp = 8;
4303 break;
04b3924d
VS		 4304 case DRM_FORMAT_XRGB1555:
4305 case DRM_FORMAT_XBGR1555:
4306 case DRM_FORMAT_RGBX5551:
4307 case DRM_FORMAT_BGRX5551:
4308 case DRM_FORMAT_ARGB1555:
4309 case DRM_FORMAT_ABGR1555:
4310 case DRM_FORMAT_RGBA5551:
4311 case DRM_FORMAT_BGRA5551:
248dbc23
DA		 4312 *depth = 15;
4313 *bpp = 16;
4314 break;
04b3924d
VS		 4315 case DRM_FORMAT_RGB565:
4316 case DRM_FORMAT_BGR565:
248dbc23
DA		 4317 *depth = 16;
4318 *bpp = 16;
4319 break;
04b3924d
VS		 4320 case DRM_FORMAT_RGB888:
4321 case DRM_FORMAT_BGR888:
4322 *depth = 24;
4323 *bpp = 24;
4324 break;
4325 case DRM_FORMAT_XRGB8888:
4326 case DRM_FORMAT_XBGR8888:
4327 case DRM_FORMAT_RGBX8888:
4328 case DRM_FORMAT_BGRX8888:
248dbc23
DA		 4329 *depth = 24;
4330 *bpp = 32;
4331 break;
04b3924d
VS		 4332 case DRM_FORMAT_XRGB2101010:
4333 case DRM_FORMAT_XBGR2101010:
4334 case DRM_FORMAT_RGBX1010102:
4335 case DRM_FORMAT_BGRX1010102:
4336 case DRM_FORMAT_ARGB2101010:
4337 case DRM_FORMAT_ABGR2101010:
4338 case DRM_FORMAT_RGBA1010102:
4339 case DRM_FORMAT_BGRA1010102:
248dbc23
DA		 4340 *depth = 30;
4341 *bpp = 32;
4342 break;
04b3924d
VS		 4343 case DRM_FORMAT_ARGB8888:
4344 case DRM_FORMAT_ABGR8888:
4345 case DRM_FORMAT_RGBA8888:
4346 case DRM_FORMAT_BGRA8888:
248dbc23
DA		 4347 *depth = 32;
4348 *bpp = 32;
4349 break;
4350 default:
23c453a4
VS		 4351 DRM_DEBUG_KMS("unsupported pixel format %s\n",
4352 drm_get_format_name(format));
248dbc23
DA		 4353 *depth = 0;
4354 *bpp = 0;
4355 break;
4356 }
4357}
4358EXPORT_SYMBOL(drm_fb_get_bpp_depth);
141670e9
VS		 4359
4360/**
4361 * drm_format_num_planes - get the number of planes for format
4362 * @format: pixel format (DRM_FORMAT_*)
4363 *
c8e32cc1 4364 * Returns:
141670e9
VS		 4365 * The number of planes used by the specified pixel format.
4366 */
4367int drm_format_num_planes(uint32_t format)
4368{
4369 switch (format) {
4370 case DRM_FORMAT_YUV410:
4371 case DRM_FORMAT_YVU410:
4372 case DRM_FORMAT_YUV411:
4373 case DRM_FORMAT_YVU411:
4374 case DRM_FORMAT_YUV420:
4375 case DRM_FORMAT_YVU420:
4376 case DRM_FORMAT_YUV422:
4377 case DRM_FORMAT_YVU422:
4378 case DRM_FORMAT_YUV444:
4379 case DRM_FORMAT_YVU444:
4380 return 3;
4381 case DRM_FORMAT_NV12:
4382 case DRM_FORMAT_NV21:
4383 case DRM_FORMAT_NV16:
4384 case DRM_FORMAT_NV61:
ba623f6a
LP		 4385 case DRM_FORMAT_NV24:
4386 case DRM_FORMAT_NV42:
141670e9
VS		 4387 return 2;
4388 default:
4389 return 1;
4390 }
4391}
4392EXPORT_SYMBOL(drm_format_num_planes);
5a86bd55
VS		 4393
4394/**
4395 * drm_format_plane_cpp - determine the bytes per pixel value
4396 * @format: pixel format (DRM_FORMAT_*)
4397 * @plane: plane index
4398 *
c8e32cc1 4399 * Returns:
5a86bd55
VS		 4400 * The bytes per pixel value for the specified plane.
4401 */
4402int drm_format_plane_cpp(uint32_t format, int plane)
4403{
4404 unsigned int depth;
4405 int bpp;
4406
4407 if (plane >= drm_format_num_planes(format))
4408 return 0;
4409
4410 switch (format) {
4411 case DRM_FORMAT_YUYV:
4412 case DRM_FORMAT_YVYU:
4413 case DRM_FORMAT_UYVY:
4414 case DRM_FORMAT_VYUY:
4415 return 2;
4416 case DRM_FORMAT_NV12:
4417 case DRM_FORMAT_NV21:
4418 case DRM_FORMAT_NV16:
4419 case DRM_FORMAT_NV61:
ba623f6a
LP		 4420 case DRM_FORMAT_NV24:
4421 case DRM_FORMAT_NV42:
5a86bd55
VS		 4422 return plane ? 2 : 1;
4423 case DRM_FORMAT_YUV410:
4424 case DRM_FORMAT_YVU410:
4425 case DRM_FORMAT_YUV411:
4426 case DRM_FORMAT_YVU411:
4427 case DRM_FORMAT_YUV420:
4428 case DRM_FORMAT_YVU420:
4429 case DRM_FORMAT_YUV422:
4430 case DRM_FORMAT_YVU422:
4431 case DRM_FORMAT_YUV444:
4432 case DRM_FORMAT_YVU444:
4433 return 1;
4434 default:
4435 drm_fb_get_bpp_depth(format, &depth, &bpp);
4436 return bpp >> 3;
4437 }
4438}
4439EXPORT_SYMBOL(drm_format_plane_cpp);
01b68b04
VS		 4440
4441/**
4442 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
4443 * @format: pixel format (DRM_FORMAT_*)
4444 *
c8e32cc1 4445 * Returns:
01b68b04
VS		 4446 * The horizontal chroma subsampling factor for the
4447 * specified pixel format.
4448 */
4449int drm_format_horz_chroma_subsampling(uint32_t format)
4450{
4451 switch (format) {
4452 case DRM_FORMAT_YUV411:
4453 case DRM_FORMAT_YVU411:
4454 case DRM_FORMAT_YUV410:
4455 case DRM_FORMAT_YVU410:
4456 return 4;
4457 case DRM_FORMAT_YUYV:
4458 case DRM_FORMAT_YVYU:
4459 case DRM_FORMAT_UYVY:
4460 case DRM_FORMAT_VYUY:
4461 case DRM_FORMAT_NV12:
4462 case DRM_FORMAT_NV21:
4463 case DRM_FORMAT_NV16:
4464 case DRM_FORMAT_NV61:
4465 case DRM_FORMAT_YUV422:
4466 case DRM_FORMAT_YVU422:
4467 case DRM_FORMAT_YUV420:
4468 case DRM_FORMAT_YVU420:
4469 return 2;
4470 default:
4471 return 1;
4472 }
4473}
4474EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
4475
4476/**
4477 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
4478 * @format: pixel format (DRM_FORMAT_*)
4479 *
c8e32cc1 4480 * Returns:
01b68b04
VS		 4481 * The vertical chroma subsampling factor for the
4482 * specified pixel format.
4483 */
4484int drm_format_vert_chroma_subsampling(uint32_t format)
4485{
4486 switch (format) {
4487 case DRM_FORMAT_YUV410:
4488 case DRM_FORMAT_YVU410:
4489 return 4;
4490 case DRM_FORMAT_YUV420:
4491 case DRM_FORMAT_YVU420:
4492 case DRM_FORMAT_NV12:
4493 case DRM_FORMAT_NV21:
4494 return 2;
4495 default:
4496 return 1;
4497 }
4498}
4499EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);
87d24fc3
LP		 4500
4501/**
4502 * drm_mode_config_init - initialize DRM mode_configuration structure
4503 * @dev: DRM device
4504 *
4505 * Initialize @dev's mode_config structure, used for tracking the graphics
4506 * configuration of @dev.
4507 *
4508 * Since this initializes the modeset locks, no locking is possible. Which is no
4509 * problem, since this should happen single threaded at init time. It is the
4510 * driver's problem to ensure this guarantee.
4511 *
4512 */
4513void drm_mode_config_init(struct drm_device *dev)
4514{
4515 mutex_init(&dev->mode_config.mutex);
4516 mutex_init(&dev->mode_config.idr_mutex);
4517 mutex_init(&dev->mode_config.fb_lock);
4518 INIT_LIST_HEAD(&dev->mode_config.fb_list);
4519 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
4520 INIT_LIST_HEAD(&dev->mode_config.connector_list);
3b336ec4 4521 INIT_LIST_HEAD(&dev->mode_config.bridge_list);
87d24fc3
LP		 4522 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
4523 INIT_LIST_HEAD(&dev->mode_config.property_list);
4524 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
4525 INIT_LIST_HEAD(&dev->mode_config.plane_list);
4526 idr_init(&dev->mode_config.crtc_idr);
4527
4528 drm_modeset_lock_all(dev);
4529 drm_mode_create_standard_connector_properties(dev);
4530 drm_modeset_unlock_all(dev);
4531
4532 /* Just to be sure */
4533 dev->mode_config.num_fb = 0;
4534 dev->mode_config.num_connector = 0;
4535 dev->mode_config.num_crtc = 0;
4536 dev->mode_config.num_encoder = 0;
4537}
4538EXPORT_SYMBOL(drm_mode_config_init);
4539
4540/**
4541 * drm_mode_config_cleanup - free up DRM mode_config info
4542 * @dev: DRM device
4543 *
4544 * Free up all the connectors and CRTCs associated with this DRM device, then
4545 * free up the framebuffers and associated buffer objects.
4546 *
4547 * Note that since this /should/ happen single-threaded at driver/device
4548 * teardown time, no locking is required. It's the driver's job to ensure that
4549 * this guarantee actually holds true.
4550 *
4551 * FIXME: cleanup any dangling user buffer objects too
4552 */
4553void drm_mode_config_cleanup(struct drm_device *dev)
4554{
4555 struct drm_connector *connector, *ot;
4556 struct drm_crtc *crtc, *ct;
4557 struct drm_encoder *encoder, *enct;
3b336ec4 4558 struct drm_bridge *bridge, *brt;
87d24fc3
LP		 4559 struct drm_framebuffer *fb, *fbt;
4560 struct drm_property *property, *pt;
4561 struct drm_property_blob *blob, *bt;
4562 struct drm_plane *plane, *plt;
4563
4564 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
4565 head) {
4566 encoder->funcs->destroy(encoder);
4567 }
4568
3b336ec4
SP		 4569 list_for_each_entry_safe(bridge, brt,
4570 &dev->mode_config.bridge_list, head) {
4571 bridge->funcs->destroy(bridge);
4572 }
4573
87d24fc3
LP		 4574 list_for_each_entry_safe(connector, ot,
4575 &dev->mode_config.connector_list, head) {
4576 connector->funcs->destroy(connector);
4577 }
4578
4579 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
4580 head) {
4581 drm_property_destroy(dev, property);
4582 }
4583
4584 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
4585 head) {
4586 drm_property_destroy_blob(dev, blob);
4587 }
4588
4589 /*
4590 * Single-threaded teardown context, so it's not required to grab the
4591 * fb_lock to protect against concurrent fb_list access. Contrary, it
4592 * would actually deadlock with the drm_framebuffer_cleanup function.
4593 *
4594 * Also, if there are any framebuffers left, that's a driver leak now,
4595 * so politely WARN about this.
4596 */
4597 WARN_ON(!list_empty(&dev->mode_config.fb_list));
4598 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
4599 drm_framebuffer_remove(fb);
4600 }
4601
4602 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
4603 head) {
4604 plane->funcs->destroy(plane);
4605 }
4606
4607 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
4608 crtc->funcs->destroy(crtc);
4609 }
4610
4611 idr_destroy(&dev->mode_config.crtc_idr);
4612}
4613EXPORT_SYMBOL(drm_mode_config_cleanup);
Linux 6.x block layer and io_uring tree(s)