drivers/gpu/drm/drm_crtc.c

   1 /*
   2  * Copyright (c) 2006-2008 Intel Corporation
   3  * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
   4  * Copyright (c) 2008 Red Hat Inc.
   5  *
   6  * DRM core CRTC related functions
   7  *
   8  * Permission to use, copy, modify, distribute, and sell this software and its
   9  * documentation for any purpose is hereby granted without fee, provided that
  10  * the above copyright notice appear in all copies and that both that copyright
  11  * notice and this permission notice appear in supporting documentation, and
  12  * that the name of the copyright holders not be used in advertising or
  13  * publicity pertaining to distribution of the software without specific,
  14  * written prior permission.  The copyright holders make no representations
  15  * about the suitability of this software for any purpose.  It is provided "as
  16  * is" without express or implied warranty.
  17  *
  18  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  19  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  20  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  21  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  22  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  23  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  *
  26  * Authors:
  27  *      Keith Packard
  28  *      Eric Anholt <eric@anholt.net>
  29  *      Dave Airlie <airlied@linux.ie>
  30  *      Jesse Barnes <jesse.barnes@intel.com>
  31  */
  32 #include <linux/list.h>
  33 #include <linux/slab.h>
  34 #include "drm.h"
  35 #include "drmP.h"
  36 #include "drm_crtc.h"
  37 #include "drm_edid.h"
  38
  39 struct drm_prop_enum_list {
  40         int type;
  41         char *name;
  42 };
  43
  44 /* Avoid boilerplate.  I'm tired of typing. */
  45 #define DRM_ENUM_NAME_FN(fnname, list)                          \
  46         char *fnname(int val)                                   \
  47         {                                                       \
  48                 int i;                                          \
  49                 for (i = 0; i < ARRAY_SIZE(list); i++) {        \
  50                         if (list[i].type == val)                \
  51                                 return list[i].name;            \
  52                 }                                               \
  53                 return "(unknown)";                             \
  54         }
  55
  56 /*
  57  * Global properties
  58  */
  59 static struct drm_prop_enum_list drm_dpms_enum_list[] =
  60 {       { DRM_MODE_DPMS_ON, "On" },
  61         { DRM_MODE_DPMS_STANDBY, "Standby" },
  62         { DRM_MODE_DPMS_SUSPEND, "Suspend" },
  63         { DRM_MODE_DPMS_OFF, "Off" }
  64 };
  65
  66 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
  67
  68 /*
  69  * Optional properties
  70  */
  71 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
  72 {
  73         { DRM_MODE_SCALE_NONE, "None" },
  74         { DRM_MODE_SCALE_FULLSCREEN, "Full" },
  75         { DRM_MODE_SCALE_CENTER, "Center" },
  76         { DRM_MODE_SCALE_ASPECT, "Full aspect" },
  77 };
  78
  79 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
  80 {
  81         { DRM_MODE_DITHERING_OFF, "Off" },
  82         { DRM_MODE_DITHERING_ON, "On" },
  83         { DRM_MODE_DITHERING_AUTO, "Automatic" },
  84 };
  85
  86 /*
  87  * Non-global properties, but "required" for certain connectors.
  88  */
  89 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
  90 {
  91         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
  92         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  93         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
  94 };
  95
  96 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
  97
  98 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
  99 {
 100         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 101         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
 102         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
 103 };
 104
 105 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
 106                  drm_dvi_i_subconnector_enum_list)
 107
 108 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
 109 {
 110         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
 111         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 112         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 113         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 114         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 115 };
 116
 117 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
 118
 119 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
 120 {
 121         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 122         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 123         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 124         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 125         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 126 };
 127
 128 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
 129                  drm_tv_subconnector_enum_list)
 130
 131 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
 132         { DRM_MODE_DIRTY_OFF,      "Off"      },
 133         { DRM_MODE_DIRTY_ON,       "On"       },
 134         { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
 135 };
 136
 137 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
 138                  drm_dirty_info_enum_list)
 139
 140 struct drm_conn_prop_enum_list {
 141         int type;
 142         char *name;
 143         int count;
 144 };
 145
 146 /*
 147  * Connector and encoder types.
 148  */
 149 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
 150 {       { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
 151         { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
 152         { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
 153         { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
 154         { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
 155         { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
 156         { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
 157         { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
 158         { DRM_MODE_CONNECTOR_Component, "Component", 0 },
 159         { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
 160         { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
 161         { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
 162         { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
 163         { DRM_MODE_CONNECTOR_TV, "TV", 0 },
 164         { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
 165 };
 166
 167 static struct drm_prop_enum_list drm_encoder_enum_list[] =
 168 {       { DRM_MODE_ENCODER_NONE, "None" },
 169         { DRM_MODE_ENCODER_DAC, "DAC" },
 170         { DRM_MODE_ENCODER_TMDS, "TMDS" },
 171         { DRM_MODE_ENCODER_LVDS, "LVDS" },
 172         { DRM_MODE_ENCODER_TVDAC, "TV" },
 173 };
 174
 175 char *drm_get_encoder_name(struct drm_encoder *encoder)
 176 {
 177         static char buf[32];
 178
 179         snprintf(buf, 32, "%s-%d",
 180                  drm_encoder_enum_list[encoder->encoder_type].name,
 181                  encoder->base.id);
 182         return buf;
 183 }
 184 EXPORT_SYMBOL(drm_get_encoder_name);
 185
 186 char *drm_get_connector_name(struct drm_connector *connector)
 187 {
 188         static char buf[32];
 189
 190         snprintf(buf, 32, "%s-%d",
 191                  drm_connector_enum_list[connector->connector_type].name,
 192                  connector->connector_type_id);
 193         return buf;
 194 }
 195 EXPORT_SYMBOL(drm_get_connector_name);
 196
 197 char *drm_get_connector_status_name(enum drm_connector_status status)
 198 {
 199         if (status == connector_status_connected)
 200                 return "connected";
 201         else if (status == connector_status_disconnected)
 202                 return "disconnected";
 203         else
 204                 return "unknown";
 205 }
 206
 207 /**
 208  * drm_mode_object_get - allocate a new identifier
 209  * @dev: DRM device
 210  * @ptr: object pointer, used to generate unique ID
 211  * @type: object type
 212  *
 213  * LOCKING:
 214  *
 215  * Create a unique identifier based on @ptr in @dev's identifier space.  Used
 216  * for tracking modes, CRTCs and connectors.
 217  *
 218  * RETURNS:
 219  * New unique (relative to other objects in @dev) integer identifier for the
 220  * object.
 221  */
 222 static int drm_mode_object_get(struct drm_device *dev,
 223                                struct drm_mode_object *obj, uint32_t obj_type)
 224 {
 225         int new_id = 0;
 226         int ret;
 227
 228 again:
 229         if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
 230                 DRM_ERROR("Ran out memory getting a mode number\n");
 231                 return -EINVAL;
 232         }
 233
 234         mutex_lock(&dev->mode_config.idr_mutex);
 235         ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
 236         mutex_unlock(&dev->mode_config.idr_mutex);
 237         if (ret == -EAGAIN)
 238                 goto again;
 239
 240         obj->id = new_id;
 241         obj->type = obj_type;
 242         return 0;
 243 }
 244
 245 /**
 246  * drm_mode_object_put - free an identifer
 247  * @dev: DRM device
 248  * @id: ID to free
 249  *
 250  * LOCKING:
 251  * Caller must hold DRM mode_config lock.
 252  *
 253  * Free @id from @dev's unique identifier pool.
 254  */
 255 static void drm_mode_object_put(struct drm_device *dev,
 256                                 struct drm_mode_object *object)
 257 {
 258         mutex_lock(&dev->mode_config.idr_mutex);
 259         idr_remove(&dev->mode_config.crtc_idr, object->id);
 260         mutex_unlock(&dev->mode_config.idr_mutex);
 261 }
 262
 263 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
 264                 uint32_t id, uint32_t type)
 265 {
 266         struct drm_mode_object *obj = NULL;
 267
 268         mutex_lock(&dev->mode_config.idr_mutex);
 269         obj = idr_find(&dev->mode_config.crtc_idr, id);
 270         if (!obj || (obj->type != type) || (obj->id != id))
 271                 obj = NULL;
 272         mutex_unlock(&dev->mode_config.idr_mutex);
 273
 274         return obj;
 275 }
 276 EXPORT_SYMBOL(drm_mode_object_find);
 277
 278 /**
 279  * drm_framebuffer_init - initialize a framebuffer
 280  * @dev: DRM device
 281  *
 282  * LOCKING:
 283  * Caller must hold mode config lock.
 284  *
 285  * Allocates an ID for the framebuffer's parent mode object, sets its mode
 286  * functions & device file and adds it to the master fd list.
 287  *
 288  * RETURNS:
 289  * Zero on success, error code on failure.
 290  */
 291 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
 292                          const struct drm_framebuffer_funcs *funcs)
 293 {
 294         int ret;
 295
 296         ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
 297         if (ret) {
 298                 return ret;
 299         }
 300
 301         fb->dev = dev;
 302         fb->funcs = funcs;
 303         dev->mode_config.num_fb++;
 304         list_add(&fb->head, &dev->mode_config.fb_list);
 305
 306         return 0;
 307 }
 308 EXPORT_SYMBOL(drm_framebuffer_init);
 309
 310 /**
 311  * drm_framebuffer_cleanup - remove a framebuffer object
 312  * @fb: framebuffer to remove
 313  *
 314  * LOCKING:
 315  * Caller must hold mode config lock.
 316  *
 317  * Scans all the CRTCs in @dev's mode_config.  If they're using @fb, removes
 318  * it, setting it to NULL.
 319  */
 320 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
 321 {
 322         struct drm_device *dev = fb->dev;
 323         struct drm_crtc *crtc;
 324         struct drm_mode_set set;
 325         int ret;
 326
 327         /* remove from any CRTC */
 328         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 329                 if (crtc->fb == fb) {
 330                         /* should turn off the crtc */
 331                         memset(&set, 0, sizeof(struct drm_mode_set));
 332                         set.crtc = crtc;
 333                         set.fb = NULL;
 334                         ret = crtc->funcs->set_config(&set);
 335                         if (ret)
 336                                 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
 337                 }
 338         }
 339
 340         drm_mode_object_put(dev, &fb->base);
 341         list_del(&fb->head);
 342         dev->mode_config.num_fb--;
 343 }
 344 EXPORT_SYMBOL(drm_framebuffer_cleanup);
 345
 346 /**
 347  * drm_crtc_init - Initialise a new CRTC object
 348  * @dev: DRM device
 349  * @crtc: CRTC object to init
 350  * @funcs: callbacks for the new CRTC
 351  *
 352  * LOCKING:
 353  * Caller must hold mode config lock.
 354  *
 355  * Inits a new object created as base part of an driver crtc object.
 356  */
 357 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
 358                    const struct drm_crtc_funcs *funcs)
 359 {
 360         crtc->dev = dev;
 361         crtc->funcs = funcs;
 362
 363         mutex_lock(&dev->mode_config.mutex);
 364         drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
 365
 366         list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
 367         dev->mode_config.num_crtc++;
 368         mutex_unlock(&dev->mode_config.mutex);
 369 }
 370 EXPORT_SYMBOL(drm_crtc_init);
 371
 372 /**
 373  * drm_crtc_cleanup - Cleans up the core crtc usage.
 374  * @crtc: CRTC to cleanup
 375  *
 376  * LOCKING:
 377  * Caller must hold mode config lock.
 378  *
 379  * Cleanup @crtc. Removes from drm modesetting space
 380  * does NOT free object, caller does that.
 381  */
 382 void drm_crtc_cleanup(struct drm_crtc *crtc)
 383 {
 384         struct drm_device *dev = crtc->dev;
 385
 386         if (crtc->gamma_store) {
 387                 kfree(crtc->gamma_store);
 388                 crtc->gamma_store = NULL;
 389         }
 390
 391         drm_mode_object_put(dev, &crtc->base);
 392         list_del(&crtc->head);
 393         dev->mode_config.num_crtc--;
 394 }
 395 EXPORT_SYMBOL(drm_crtc_cleanup);
 396
 397 /**
 398  * drm_mode_probed_add - add a mode to a connector's probed mode list
 399  * @connector: connector the new mode
 400  * @mode: mode data
 401  *
 402  * LOCKING:
 403  * Caller must hold mode config lock.
 404  *
 405  * Add @mode to @connector's mode list for later use.
 406  */
 407 void drm_mode_probed_add(struct drm_connector *connector,
 408                          struct drm_display_mode *mode)
 409 {
 410         list_add(&mode->head, &connector->probed_modes);
 411 }
 412 EXPORT_SYMBOL(drm_mode_probed_add);
 413
 414 /**
 415  * drm_mode_remove - remove and free a mode
 416  * @connector: connector list to modify
 417  * @mode: mode to remove
 418  *
 419  * LOCKING:
 420  * Caller must hold mode config lock.
 421  *
 422  * Remove @mode from @connector's mode list, then free it.
 423  */
 424 void drm_mode_remove(struct drm_connector *connector,
 425                      struct drm_display_mode *mode)
 426 {
 427         list_del(&mode->head);
 428         kfree(mode);
 429 }
 430 EXPORT_SYMBOL(drm_mode_remove);
 431
 432 /**
 433  * drm_connector_init - Init a preallocated connector
 434  * @dev: DRM device
 435  * @connector: the connector to init
 436  * @funcs: callbacks for this connector
 437  * @name: user visible name of the connector
 438  *
 439  * LOCKING:
 440  * Caller must hold @dev's mode_config lock.
 441  *
 442  * Initialises a preallocated connector. Connectors should be
 443  * subclassed as part of driver connector objects.
 444  */
 445 void drm_connector_init(struct drm_device *dev,
 446                      struct drm_connector *connector,
 447                      const struct drm_connector_funcs *funcs,
 448                      int connector_type)
 449 {
 450         mutex_lock(&dev->mode_config.mutex);
 451
 452         connector->dev = dev;
 453         connector->funcs = funcs;
 454         drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
 455         connector->connector_type = connector_type;
 456         connector->connector_type_id =
 457                 ++drm_connector_enum_list[connector_type].count; /* TODO */
 458         INIT_LIST_HEAD(&connector->user_modes);
 459         INIT_LIST_HEAD(&connector->probed_modes);
 460         INIT_LIST_HEAD(&connector->modes);
 461         connector->edid_blob_ptr = NULL;
 462
 463         list_add_tail(&connector->head, &dev->mode_config.connector_list);
 464         dev->mode_config.num_connector++;
 465
 466         drm_connector_attach_property(connector,
 467                                       dev->mode_config.edid_property, 0);
 468
 469         drm_connector_attach_property(connector,
 470                                       dev->mode_config.dpms_property, 0);
 471
 472         mutex_unlock(&dev->mode_config.mutex);
 473 }
 474 EXPORT_SYMBOL(drm_connector_init);
 475
 476 /**
 477  * drm_connector_cleanup - cleans up an initialised connector
 478  * @connector: connector to cleanup
 479  *
 480  * LOCKING:
 481  * Caller must hold @dev's mode_config lock.
 482  *
 483  * Cleans up the connector but doesn't free the object.
 484  */
 485 void drm_connector_cleanup(struct drm_connector *connector)
 486 {
 487         struct drm_device *dev = connector->dev;
 488         struct drm_display_mode *mode, *t;
 489
 490         list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
 491                 drm_mode_remove(connector, mode);
 492
 493         list_for_each_entry_safe(mode, t, &connector->modes, head)
 494                 drm_mode_remove(connector, mode);
 495
 496         list_for_each_entry_safe(mode, t, &connector->user_modes, head)
 497                 drm_mode_remove(connector, mode);
 498
 499         mutex_lock(&dev->mode_config.mutex);
 500         drm_mode_object_put(dev, &connector->base);
 501         list_del(&connector->head);
 502         mutex_unlock(&dev->mode_config.mutex);
 503 }
 504 EXPORT_SYMBOL(drm_connector_cleanup);
 505
 506 void drm_encoder_init(struct drm_device *dev,
 507                       struct drm_encoder *encoder,
 508                       const struct drm_encoder_funcs *funcs,
 509                       int encoder_type)
 510 {
 511         mutex_lock(&dev->mode_config.mutex);
 512
 513         encoder->dev = dev;
 514
 515         drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
 516         encoder->encoder_type = encoder_type;
 517         encoder->funcs = funcs;
 518
 519         list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
 520         dev->mode_config.num_encoder++;
 521
 522         mutex_unlock(&dev->mode_config.mutex);
 523 }
 524 EXPORT_SYMBOL(drm_encoder_init);
 525
 526 void drm_encoder_cleanup(struct drm_encoder *encoder)
 527 {
 528         struct drm_device *dev = encoder->dev;
 529         mutex_lock(&dev->mode_config.mutex);
 530         drm_mode_object_put(dev, &encoder->base);
 531         list_del(&encoder->head);
 532         mutex_unlock(&dev->mode_config.mutex);
 533 }
 534 EXPORT_SYMBOL(drm_encoder_cleanup);
 535
 536 /**
 537  * drm_mode_create - create a new display mode
 538  * @dev: DRM device
 539  *
 540  * LOCKING:
 541  * Caller must hold DRM mode_config lock.
 542  *
 543  * Create a new drm_display_mode, give it an ID, and return it.
 544  *
 545  * RETURNS:
 546  * Pointer to new mode on success, NULL on error.
 547  */
 548 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
 549 {
 550         struct drm_display_mode *nmode;
 551
 552         nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
 553         if (!nmode)
 554                 return NULL;
 555
 556         drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
 557         return nmode;
 558 }
 559 EXPORT_SYMBOL(drm_mode_create);
 560
 561 /**
 562  * drm_mode_destroy - remove a mode
 563  * @dev: DRM device
 564  * @mode: mode to remove
 565  *
 566  * LOCKING:
 567  * Caller must hold mode config lock.
 568  *
 569  * Free @mode's unique identifier, then free it.
 570  */
 571 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
 572 {
 573         drm_mode_object_put(dev, &mode->base);
 574
 575         kfree(mode);
 576 }
 577 EXPORT_SYMBOL(drm_mode_destroy);
 578
 579 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 580 {
 581         struct drm_property *edid;
 582         struct drm_property *dpms;
 583         int i;
 584
 585         /*
 586          * Standard properties (apply to all connectors)
 587          */
 588         edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
 589                                    DRM_MODE_PROP_IMMUTABLE,
 590                                    "EDID", 0);
 591         dev->mode_config.edid_property = edid;
 592
 593         dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 594                                    "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
 595         for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
 596                 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
 597                                       drm_dpms_enum_list[i].name);
 598         dev->mode_config.dpms_property = dpms;
 599
 600         return 0;
 601 }
 602
 603 /**
 604  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
 605  * @dev: DRM device
 606  *
 607  * Called by a driver the first time a DVI-I connector is made.
 608  */
 609 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
 610 {
 611         struct drm_property *dvi_i_selector;
 612         struct drm_property *dvi_i_subconnector;
 613         int i;
 614
 615         if (dev->mode_config.dvi_i_select_subconnector_property)
 616                 return 0;
 617
 618         dvi_i_selector =
 619                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 620                                     "select subconnector",
 621                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
 622         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
 623                 drm_property_add_enum(dvi_i_selector, i,
 624                                       drm_dvi_i_select_enum_list[i].type,
 625                                       drm_dvi_i_select_enum_list[i].name);
 626         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
 627
 628         dvi_i_subconnector =
 629                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 630                                     DRM_MODE_PROP_IMMUTABLE,
 631                                     "subconnector",
 632                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
 633         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
 634                 drm_property_add_enum(dvi_i_subconnector, i,
 635                                       drm_dvi_i_subconnector_enum_list[i].type,
 636                                       drm_dvi_i_subconnector_enum_list[i].name);
 637         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
 638
 639         return 0;
 640 }
 641 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
 642
 643 /**
 644  * drm_create_tv_properties - create TV specific connector properties
 645  * @dev: DRM device
 646  * @num_modes: number of different TV formats (modes) supported
 647  * @modes: array of pointers to strings containing name of each format
 648  *
 649  * Called by a driver's TV initialization routine, this function creates
 650  * the TV specific connector properties for a given device.  Caller is
 651  * responsible for allocating a list of format names and passing them to
 652  * this routine.
 653  */
 654 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
 655                                   char *modes[])
 656 {
 657         struct drm_property *tv_selector;
 658         struct drm_property *tv_subconnector;
 659         int i;
 660
 661         if (dev->mode_config.tv_select_subconnector_property)
 662                 return 0;
 663
 664         /*
 665          * Basic connector properties
 666          */
 667         tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 668                                           "select subconnector",
 669                                           ARRAY_SIZE(drm_tv_select_enum_list));
 670         for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
 671                 drm_property_add_enum(tv_selector, i,
 672                                       drm_tv_select_enum_list[i].type,
 673                                       drm_tv_select_enum_list[i].name);
 674         dev->mode_config.tv_select_subconnector_property = tv_selector;
 675
 676         tv_subconnector =
 677                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 678                                     DRM_MODE_PROP_IMMUTABLE, "subconnector",
 679                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
 680         for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
 681                 drm_property_add_enum(tv_subconnector, i,
 682                                       drm_tv_subconnector_enum_list[i].type,
 683                                       drm_tv_subconnector_enum_list[i].name);
 684         dev->mode_config.tv_subconnector_property = tv_subconnector;
 685
 686         /*
 687          * Other, TV specific properties: margins & TV modes.
 688          */
 689         dev->mode_config.tv_left_margin_property =
 690                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 691                                     "left margin", 2);
 692         dev->mode_config.tv_left_margin_property->values[0] = 0;
 693         dev->mode_config.tv_left_margin_property->values[1] = 100;
 694
 695         dev->mode_config.tv_right_margin_property =
 696                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 697                                     "right margin", 2);
 698         dev->mode_config.tv_right_margin_property->values[0] = 0;
 699         dev->mode_config.tv_right_margin_property->values[1] = 100;
 700
 701         dev->mode_config.tv_top_margin_property =
 702                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 703                                     "top margin", 2);
 704         dev->mode_config.tv_top_margin_property->values[0] = 0;
 705         dev->mode_config.tv_top_margin_property->values[1] = 100;
 706
 707         dev->mode_config.tv_bottom_margin_property =
 708                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 709                                     "bottom margin", 2);
 710         dev->mode_config.tv_bottom_margin_property->values[0] = 0;
 711         dev->mode_config.tv_bottom_margin_property->values[1] = 100;
 712
 713         dev->mode_config.tv_mode_property =
 714                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 715                                     "mode", num_modes);
 716         for (i = 0; i < num_modes; i++)
 717                 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
 718                                       i, modes[i]);
 719
 720         dev->mode_config.tv_brightness_property =
 721                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 722                                     "brightness", 2);
 723         dev->mode_config.tv_brightness_property->values[0] = 0;
 724         dev->mode_config.tv_brightness_property->values[1] = 100;
 725
 726         dev->mode_config.tv_contrast_property =
 727                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 728                                     "contrast", 2);
 729         dev->mode_config.tv_contrast_property->values[0] = 0;
 730         dev->mode_config.tv_contrast_property->values[1] = 100;
 731
 732         dev->mode_config.tv_flicker_reduction_property =
 733                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 734                                     "flicker reduction", 2);
 735         dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
 736         dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
 737
 738         dev->mode_config.tv_overscan_property =
 739                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 740                                     "overscan", 2);
 741         dev->mode_config.tv_overscan_property->values[0] = 0;
 742         dev->mode_config.tv_overscan_property->values[1] = 100;
 743
 744         dev->mode_config.tv_saturation_property =
 745                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 746                                     "saturation", 2);
 747         dev->mode_config.tv_saturation_property->values[0] = 0;
 748         dev->mode_config.tv_saturation_property->values[1] = 100;
 749
 750         dev->mode_config.tv_hue_property =
 751                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 752                                     "hue", 2);
 753         dev->mode_config.tv_hue_property->values[0] = 0;
 754         dev->mode_config.tv_hue_property->values[1] = 100;
 755
 756         return 0;
 757 }
 758 EXPORT_SYMBOL(drm_mode_create_tv_properties);
 759
 760 /**
 761  * drm_mode_create_scaling_mode_property - create scaling mode property
 762  * @dev: DRM device
 763  *
 764  * Called by a driver the first time it's needed, must be attached to desired
 765  * connectors.
 766  */
 767 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
 768 {
 769         struct drm_property *scaling_mode;
 770         int i;
 771
 772         if (dev->mode_config.scaling_mode_property)
 773                 return 0;
 774
 775         scaling_mode =
 776                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
 777                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
 778         for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
 779                 drm_property_add_enum(scaling_mode, i,
 780                                       drm_scaling_mode_enum_list[i].type,
 781                                       drm_scaling_mode_enum_list[i].name);
 782
 783         dev->mode_config.scaling_mode_property = scaling_mode;
 784
 785         return 0;
 786 }
 787 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
 788
 789 /**
 790  * drm_mode_create_dithering_property - create dithering property
 791  * @dev: DRM device
 792  *
 793  * Called by a driver the first time it's needed, must be attached to desired
 794  * connectors.
 795  */
 796 int drm_mode_create_dithering_property(struct drm_device *dev)
 797 {
 798         struct drm_property *dithering_mode;
 799         int i;
 800
 801         if (dev->mode_config.dithering_mode_property)
 802                 return 0;
 803
 804         dithering_mode =
 805                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
 806                                     ARRAY_SIZE(drm_dithering_mode_enum_list));
 807         for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
 808                 drm_property_add_enum(dithering_mode, i,
 809                                       drm_dithering_mode_enum_list[i].type,
 810                                       drm_dithering_mode_enum_list[i].name);
 811         dev->mode_config.dithering_mode_property = dithering_mode;
 812
 813         return 0;
 814 }
 815 EXPORT_SYMBOL(drm_mode_create_dithering_property);
 816
 817 /**
 818  * drm_mode_create_dirty_property - create dirty property
 819  * @dev: DRM device
 820  *
 821  * Called by a driver the first time it's needed, must be attached to desired
 822  * connectors.
 823  */
 824 int drm_mode_create_dirty_info_property(struct drm_device *dev)
 825 {
 826         struct drm_property *dirty_info;
 827         int i;
 828
 829         if (dev->mode_config.dirty_info_property)
 830                 return 0;
 831
 832         dirty_info =
 833                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 834                                     DRM_MODE_PROP_IMMUTABLE,
 835                                     "dirty",
 836                                     ARRAY_SIZE(drm_dirty_info_enum_list));
 837         for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
 838                 drm_property_add_enum(dirty_info, i,
 839                                       drm_dirty_info_enum_list[i].type,
 840                                       drm_dirty_info_enum_list[i].name);
 841         dev->mode_config.dirty_info_property = dirty_info;
 842
 843         return 0;
 844 }
 845 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
 846
 847 /**
 848  * drm_mode_config_init - initialize DRM mode_configuration structure
 849  * @dev: DRM device
 850  *
 851  * LOCKING:
 852  * None, should happen single threaded at init time.
 853  *
 854  * Initialize @dev's mode_config structure, used for tracking the graphics
 855  * configuration of @dev.
 856  */
 857 void drm_mode_config_init(struct drm_device *dev)
 858 {
 859         mutex_init(&dev->mode_config.mutex);
 860         mutex_init(&dev->mode_config.idr_mutex);
 861         INIT_LIST_HEAD(&dev->mode_config.fb_list);
 862         INIT_LIST_HEAD(&dev->mode_config.crtc_list);
 863         INIT_LIST_HEAD(&dev->mode_config.connector_list);
 864         INIT_LIST_HEAD(&dev->mode_config.encoder_list);
 865         INIT_LIST_HEAD(&dev->mode_config.property_list);
 866         INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
 867         idr_init(&dev->mode_config.crtc_idr);
 868
 869         mutex_lock(&dev->mode_config.mutex);
 870         drm_mode_create_standard_connector_properties(dev);
 871         mutex_unlock(&dev->mode_config.mutex);
 872
 873         /* Just to be sure */
 874         dev->mode_config.num_fb = 0;
 875         dev->mode_config.num_connector = 0;
 876         dev->mode_config.num_crtc = 0;
 877         dev->mode_config.num_encoder = 0;
 878 }
 879 EXPORT_SYMBOL(drm_mode_config_init);
 880
 881 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
 882 {
 883         uint32_t total_objects = 0;
 884
 885         total_objects += dev->mode_config.num_crtc;
 886         total_objects += dev->mode_config.num_connector;
 887         total_objects += dev->mode_config.num_encoder;
 888
 889         group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
 890         if (!group->id_list)
 891                 return -ENOMEM;
 892
 893         group->num_crtcs = 0;
 894         group->num_connectors = 0;
 895         group->num_encoders = 0;
 896         return 0;
 897 }
 898
 899 int drm_mode_group_init_legacy_group(struct drm_device *dev,
 900                                      struct drm_mode_group *group)
 901 {
 902         struct drm_crtc *crtc;
 903         struct drm_encoder *encoder;
 904         struct drm_connector *connector;
 905         int ret;
 906
 907         if ((ret = drm_mode_group_init(dev, group)))
 908                 return ret;
 909
 910         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 911                 group->id_list[group->num_crtcs++] = crtc->base.id;
 912
 913         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
 914                 group->id_list[group->num_crtcs + group->num_encoders++] =
 915                 encoder->base.id;
 916
 917         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 918                 group->id_list[group->num_crtcs + group->num_encoders +
 919                                group->num_connectors++] = connector->base.id;
 920
 921         return 0;
 922 }
 923
 924 /**
 925  * drm_mode_config_cleanup - free up DRM mode_config info
 926  * @dev: DRM device
 927  *
 928  * LOCKING:
 929  * Caller must hold mode config lock.
 930  *
 931  * Free up all the connectors and CRTCs associated with this DRM device, then
 932  * free up the framebuffers and associated buffer objects.
 933  *
 934  * FIXME: cleanup any dangling user buffer objects too
 935  */
 936 void drm_mode_config_cleanup(struct drm_device *dev)
 937 {
 938         struct drm_connector *connector, *ot;
 939         struct drm_crtc *crtc, *ct;
 940         struct drm_encoder *encoder, *enct;
 941         struct drm_framebuffer *fb, *fbt;
 942         struct drm_property *property, *pt;
 943
 944         list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
 945                                  head) {
 946                 encoder->funcs->destroy(encoder);
 947         }
 948
 949         list_for_each_entry_safe(connector, ot,
 950                                  &dev->mode_config.connector_list, head) {
 951                 connector->funcs->destroy(connector);
 952         }
 953
 954         list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
 955                                  head) {
 956                 drm_property_destroy(dev, property);
 957         }
 958
 959         list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
 960                 fb->funcs->destroy(fb);
 961         }
 962
 963         list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
 964                 crtc->funcs->destroy(crtc);
 965         }
 966
 967 }
 968 EXPORT_SYMBOL(drm_mode_config_cleanup);
 969
 970 /**
 971  * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
 972  * @out: drm_mode_modeinfo struct to return to the user
 973  * @in: drm_display_mode to use
 974  *
 975  * LOCKING:
 976  * None.
 977  *
 978  * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
 979  * the user.
 980  */
 981 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
 982                                struct drm_display_mode *in)
 983 {
 984         out->clock = in->clock;
 985         out->hdisplay = in->hdisplay;
 986         out->hsync_start = in->hsync_start;
 987         out->hsync_end = in->hsync_end;
 988         out->htotal = in->htotal;
 989         out->hskew = in->hskew;
 990         out->vdisplay = in->vdisplay;
 991         out->vsync_start = in->vsync_start;
 992         out->vsync_end = in->vsync_end;
 993         out->vtotal = in->vtotal;
 994         out->vscan = in->vscan;
 995         out->vrefresh = in->vrefresh;
 996         out->flags = in->flags;
 997         out->type = in->type;
 998         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
 999         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1000 }
1001
1002 /**
1003  * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1004  * @out: drm_display_mode to return to the user
1005  * @in: drm_mode_modeinfo to use
1006  *
1007  * LOCKING:
1008  * None.
1009  *
1010  * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1011  * the caller.
1012  */
1013 void drm_crtc_convert_umode(struct drm_display_mode *out,
1014                             struct drm_mode_modeinfo *in)
1015 {
1016         out->clock = in->clock;
1017         out->hdisplay = in->hdisplay;
1018         out->hsync_start = in->hsync_start;
1019         out->hsync_end = in->hsync_end;
1020         out->htotal = in->htotal;
1021         out->hskew = in->hskew;
1022         out->vdisplay = in->vdisplay;
1023         out->vsync_start = in->vsync_start;
1024         out->vsync_end = in->vsync_end;
1025         out->vtotal = in->vtotal;
1026         out->vscan = in->vscan;
1027         out->vrefresh = in->vrefresh;
1028         out->flags = in->flags;
1029         out->type = in->type;
1030         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1031         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1032 }
1033
1034 /**
1035  * drm_mode_getresources - get graphics configuration
1036  * @inode: inode from the ioctl
1037  * @filp: file * from the ioctl
1038  * @cmd: cmd from ioctl
1039  * @arg: arg from ioctl
1040  *
1041  * LOCKING:
1042  * Takes mode config lock.
1043  *
1044  * Construct a set of configuration description structures and return
1045  * them to the user, including CRTC, connector and framebuffer configuration.
1046  *
1047  * Called by the user via ioctl.
1048  *
1049  * RETURNS:
1050  * Zero on success, errno on failure.
1051  */
1052 int drm_mode_getresources(struct drm_device *dev, void *data,
1053                           struct drm_file *file_priv)
1054 {
1055         struct drm_mode_card_res *card_res = data;
1056         struct list_head *lh;
1057         struct drm_framebuffer *fb;
1058         struct drm_connector *connector;
1059         struct drm_crtc *crtc;
1060         struct drm_encoder *encoder;
1061         int ret = 0;
1062         int connector_count = 0;
1063         int crtc_count = 0;
1064         int fb_count = 0;
1065         int encoder_count = 0;
1066         int copied = 0, i;
1067         uint32_t __user *fb_id;
1068         uint32_t __user *crtc_id;
1069         uint32_t __user *connector_id;
1070         uint32_t __user *encoder_id;
1071         struct drm_mode_group *mode_group;
1072
1073         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1074                 return -EINVAL;
1075
1076         mutex_lock(&dev->mode_config.mutex);
1077
1078         /*
1079          * For the non-control nodes we need to limit the list of resources
1080          * by IDs in the group list for this node
1081          */
1082         list_for_each(lh, &file_priv->fbs)
1083                 fb_count++;
1084
1085         mode_group = &file_priv->master->minor->mode_group;
1086         if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1087
1088                 list_for_each(lh, &dev->mode_config.crtc_list)
1089                         crtc_count++;
1090
1091                 list_for_each(lh, &dev->mode_config.connector_list)
1092                         connector_count++;
1093
1094                 list_for_each(lh, &dev->mode_config.encoder_list)
1095                         encoder_count++;
1096         } else {
1097
1098                 crtc_count = mode_group->num_crtcs;
1099                 connector_count = mode_group->num_connectors;
1100                 encoder_count = mode_group->num_encoders;
1101         }
1102
1103         card_res->max_height = dev->mode_config.max_height;
1104         card_res->min_height = dev->mode_config.min_height;
1105         card_res->max_width = dev->mode_config.max_width;
1106         card_res->min_width = dev->mode_config.min_width;
1107
1108         /* handle this in 4 parts */
1109         /* FBs */
1110         if (card_res->count_fbs >= fb_count) {
1111                 copied = 0;
1112                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1113                 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1114                         if (put_user(fb->base.id, fb_id + copied)) {
1115                                 ret = -EFAULT;
1116                                 goto out;
1117                         }
1118                         copied++;
1119                 }
1120         }
1121         card_res->count_fbs = fb_count;
1122
1123         /* CRTCs */
1124         if (card_res->count_crtcs >= crtc_count) {
1125                 copied = 0;
1126                 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1127                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1128                         list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1129                                             head) {
1130                                 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1131                                 if (put_user(crtc->base.id, crtc_id + copied)) {
1132                                         ret = -EFAULT;
1133                                         goto out;
1134                                 }
1135                                 copied++;
1136                         }
1137                 } else {
1138                         for (i = 0; i < mode_group->num_crtcs; i++) {
1139                                 if (put_user(mode_group->id_list[i],
1140                                              crtc_id + copied)) {
1141                                         ret = -EFAULT;
1142                                         goto out;
1143                                 }
1144                                 copied++;
1145                         }
1146                 }
1147         }
1148         card_res->count_crtcs = crtc_count;
1149
1150         /* Encoders */
1151         if (card_res->count_encoders >= encoder_count) {
1152                 copied = 0;
1153                 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1154                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1155                         list_for_each_entry(encoder,
1156                                             &dev->mode_config.encoder_list,
1157                                             head) {
1158                                 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1159                                                 drm_get_encoder_name(encoder));
1160                                 if (put_user(encoder->base.id, encoder_id +
1161                                              copied)) {
1162                                         ret = -EFAULT;
1163                                         goto out;
1164                                 }
1165                                 copied++;
1166                         }
1167                 } else {
1168                         for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1169                                 if (put_user(mode_group->id_list[i],
1170                                              encoder_id + copied)) {
1171                                         ret = -EFAULT;
1172                                         goto out;
1173                                 }
1174                                 copied++;
1175                         }
1176
1177                 }
1178         }
1179         card_res->count_encoders = encoder_count;
1180
1181         /* Connectors */
1182         if (card_res->count_connectors >= connector_count) {
1183                 copied = 0;
1184                 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1185                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1186                         list_for_each_entry(connector,
1187                                             &dev->mode_config.connector_list,
1188                                             head) {
1189                                 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1190                                         connector->base.id,
1191                                         drm_get_connector_name(connector));
1192                                 if (put_user(connector->base.id,
1193                                              connector_id + copied)) {
1194                                         ret = -EFAULT;
1195                                         goto out;
1196                                 }
1197                                 copied++;
1198                         }
1199                 } else {
1200                         int start = mode_group->num_crtcs +
1201                                 mode_group->num_encoders;
1202                         for (i = start; i < start + mode_group->num_connectors; i++) {
1203                                 if (put_user(mode_group->id_list[i],
1204                                              connector_id + copied)) {
1205                                         ret = -EFAULT;
1206                                         goto out;
1207                                 }
1208                                 copied++;
1209                         }
1210                 }
1211         }
1212         card_res->count_connectors = connector_count;
1213
1214         DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1215                   card_res->count_connectors, card_res->count_encoders);
1216
1217 out:
1218         mutex_unlock(&dev->mode_config.mutex);
1219         return ret;
1220 }
1221
1222 /**
1223  * drm_mode_getcrtc - get CRTC configuration
1224  * @inode: inode from the ioctl
1225  * @filp: file * from the ioctl
1226  * @cmd: cmd from ioctl
1227  * @arg: arg from ioctl
1228  *
1229  * LOCKING:
1230  * Caller? (FIXME)
1231  *
1232  * Construct a CRTC configuration structure to return to the user.
1233  *
1234  * Called by the user via ioctl.
1235  *
1236  * RETURNS:
1237  * Zero on success, errno on failure.
1238  */
1239 int drm_mode_getcrtc(struct drm_device *dev,
1240                      void *data, struct drm_file *file_priv)
1241 {
1242         struct drm_mode_crtc *crtc_resp = data;
1243         struct drm_crtc *crtc;
1244         struct drm_mode_object *obj;
1245         int ret = 0;
1246
1247         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1248                 return -EINVAL;
1249
1250         mutex_lock(&dev->mode_config.mutex);
1251
1252         obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1253                                    DRM_MODE_OBJECT_CRTC);
1254         if (!obj) {
1255                 ret = -EINVAL;
1256                 goto out;
1257         }
1258         crtc = obj_to_crtc(obj);
1259
1260         crtc_resp->x = crtc->x;
1261         crtc_resp->y = crtc->y;
1262         crtc_resp->gamma_size = crtc->gamma_size;
1263         if (crtc->fb)
1264                 crtc_resp->fb_id = crtc->fb->base.id;
1265         else
1266                 crtc_resp->fb_id = 0;
1267
1268         if (crtc->enabled) {
1269
1270                 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1271                 crtc_resp->mode_valid = 1;
1272
1273         } else {
1274                 crtc_resp->mode_valid = 0;
1275         }
1276
1277 out:
1278         mutex_unlock(&dev->mode_config.mutex);
1279         return ret;
1280 }
1281
1282 /**
1283  * drm_mode_getconnector - get connector configuration
1284  * @inode: inode from the ioctl
1285  * @filp: file * from the ioctl
1286  * @cmd: cmd from ioctl
1287  * @arg: arg from ioctl
1288  *
1289  * LOCKING:
1290  * Caller? (FIXME)
1291  *
1292  * Construct a connector configuration structure to return to the user.
1293  *
1294  * Called by the user via ioctl.
1295  *
1296  * RETURNS:
1297  * Zero on success, errno on failure.
1298  */
1299 int drm_mode_getconnector(struct drm_device *dev, void *data,
1300                           struct drm_file *file_priv)
1301 {
1302         struct drm_mode_get_connector *out_resp = data;
1303         struct drm_mode_object *obj;
1304         struct drm_connector *connector;
1305         struct drm_display_mode *mode;
1306         int mode_count = 0;
1307         int props_count = 0;
1308         int encoders_count = 0;
1309         int ret = 0;
1310         int copied = 0;
1311         int i;
1312         struct drm_mode_modeinfo u_mode;
1313         struct drm_mode_modeinfo __user *mode_ptr;
1314         uint32_t __user *prop_ptr;
1315         uint64_t __user *prop_values;
1316         uint32_t __user *encoder_ptr;
1317
1318         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1319                 return -EINVAL;
1320
1321         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1322
1323         DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1324
1325         mutex_lock(&dev->mode_config.mutex);
1326
1327         obj = drm_mode_object_find(dev, out_resp->connector_id,
1328                                    DRM_MODE_OBJECT_CONNECTOR);
1329         if (!obj) {
1330                 ret = -EINVAL;
1331                 goto out;
1332         }
1333         connector = obj_to_connector(obj);
1334
1335         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1336                 if (connector->property_ids[i] != 0) {
1337                         props_count++;
1338                 }
1339         }
1340
1341         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1342                 if (connector->encoder_ids[i] != 0) {
1343                         encoders_count++;
1344                 }
1345         }
1346
1347         if (out_resp->count_modes == 0) {
1348                 connector->funcs->fill_modes(connector,
1349                                              dev->mode_config.max_width,
1350                                              dev->mode_config.max_height);
1351         }
1352
1353         /* delayed so we get modes regardless of pre-fill_modes state */
1354         list_for_each_entry(mode, &connector->modes, head)
1355                 mode_count++;
1356
1357         out_resp->connector_id = connector->base.id;
1358         out_resp->connector_type = connector->connector_type;
1359         out_resp->connector_type_id = connector->connector_type_id;
1360         out_resp->mm_width = connector->display_info.width_mm;
1361         out_resp->mm_height = connector->display_info.height_mm;
1362         out_resp->subpixel = connector->display_info.subpixel_order;
1363         out_resp->connection = connector->status;
1364         if (connector->encoder)
1365                 out_resp->encoder_id = connector->encoder->base.id;
1366         else
1367                 out_resp->encoder_id = 0;
1368
1369         /*
1370          * This ioctl is called twice, once to determine how much space is
1371          * needed, and the 2nd time to fill it.
1372          */
1373         if ((out_resp->count_modes >= mode_count) && mode_count) {
1374                 copied = 0;
1375                 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1376                 list_for_each_entry(mode, &connector->modes, head) {
1377                         drm_crtc_convert_to_umode(&u_mode, mode);
1378                         if (copy_to_user(mode_ptr + copied,
1379                                          &u_mode, sizeof(u_mode))) {
1380                                 ret = -EFAULT;
1381                                 goto out;
1382                         }
1383                         copied++;
1384                 }
1385         }
1386         out_resp->count_modes = mode_count;
1387
1388         if ((out_resp->count_props >= props_count) && props_count) {
1389                 copied = 0;
1390                 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1391                 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1392                 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1393                         if (connector->property_ids[i] != 0) {
1394                                 if (put_user(connector->property_ids[i],
1395                                              prop_ptr + copied)) {
1396                                         ret = -EFAULT;
1397                                         goto out;
1398                                 }
1399
1400                                 if (put_user(connector->property_values[i],
1401                                              prop_values + copied)) {
1402                                         ret = -EFAULT;
1403                                         goto out;
1404                                 }
1405                                 copied++;
1406                         }
1407                 }
1408         }
1409         out_resp->count_props = props_count;
1410
1411         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1412                 copied = 0;
1413                 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1414                 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1415                         if (connector->encoder_ids[i] != 0) {
1416                                 if (put_user(connector->encoder_ids[i],
1417                                              encoder_ptr + copied)) {
1418                                         ret = -EFAULT;
1419                                         goto out;
1420                                 }
1421                                 copied++;
1422                         }
1423                 }
1424         }
1425         out_resp->count_encoders = encoders_count;
1426
1427 out:
1428         mutex_unlock(&dev->mode_config.mutex);
1429         return ret;
1430 }
1431
1432 int drm_mode_getencoder(struct drm_device *dev, void *data,
1433                         struct drm_file *file_priv)
1434 {
1435         struct drm_mode_get_encoder *enc_resp = data;
1436         struct drm_mode_object *obj;
1437         struct drm_encoder *encoder;
1438         int ret = 0;
1439
1440         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1441                 return -EINVAL;
1442
1443         mutex_lock(&dev->mode_config.mutex);
1444         obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1445                                    DRM_MODE_OBJECT_ENCODER);
1446         if (!obj) {
1447                 ret = -EINVAL;
1448                 goto out;
1449         }
1450         encoder = obj_to_encoder(obj);
1451
1452         if (encoder->crtc)
1453                 enc_resp->crtc_id = encoder->crtc->base.id;
1454         else
1455                 enc_resp->crtc_id = 0;
1456         enc_resp->encoder_type = encoder->encoder_type;
1457         enc_resp->encoder_id = encoder->base.id;
1458         enc_resp->possible_crtcs = encoder->possible_crtcs;
1459         enc_resp->possible_clones = encoder->possible_clones;
1460
1461 out:
1462         mutex_unlock(&dev->mode_config.mutex);
1463         return ret;
1464 }
1465
1466 /**
1467  * drm_mode_setcrtc - set CRTC configuration
1468  * @inode: inode from the ioctl
1469  * @filp: file * from the ioctl
1470  * @cmd: cmd from ioctl
1471  * @arg: arg from ioctl
1472  *
1473  * LOCKING:
1474  * Caller? (FIXME)
1475  *
1476  * Build a new CRTC configuration based on user request.
1477  *
1478  * Called by the user via ioctl.
1479  *
1480  * RETURNS:
1481  * Zero on success, errno on failure.
1482  */
1483 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1484                      struct drm_file *file_priv)
1485 {
1486         struct drm_mode_config *config = &dev->mode_config;
1487         struct drm_mode_crtc *crtc_req = data;
1488         struct drm_mode_object *obj;
1489         struct drm_crtc *crtc, *crtcfb;
1490         struct drm_connector **connector_set = NULL, *connector;
1491         struct drm_framebuffer *fb = NULL;
1492         struct drm_display_mode *mode = NULL;
1493         struct drm_mode_set set;
1494         uint32_t __user *set_connectors_ptr;
1495         int ret = 0;
1496         int i;
1497
1498         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1499                 return -EINVAL;
1500
1501         mutex_lock(&dev->mode_config.mutex);
1502         obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1503                                    DRM_MODE_OBJECT_CRTC);
1504         if (!obj) {
1505                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1506                 ret = -EINVAL;
1507                 goto out;
1508         }
1509         crtc = obj_to_crtc(obj);
1510         DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1511
1512         if (crtc_req->mode_valid) {
1513                 /* If we have a mode we need a framebuffer. */
1514                 /* If we pass -1, set the mode with the currently bound fb */
1515                 if (crtc_req->fb_id == -1) {
1516                         list_for_each_entry(crtcfb,
1517                                             &dev->mode_config.crtc_list, head) {
1518                                 if (crtcfb == crtc) {
1519                                         DRM_DEBUG_KMS("Using current fb for "
1520                                                         "setmode\n");
1521                                         fb = crtc->fb;
1522                                 }
1523                         }
1524                 } else {
1525                         obj = drm_mode_object_find(dev, crtc_req->fb_id,
1526                                                    DRM_MODE_OBJECT_FB);
1527                         if (!obj) {
1528                                 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1529                                                 crtc_req->fb_id);
1530                                 ret = -EINVAL;
1531                                 goto out;
1532                         }
1533                         fb = obj_to_fb(obj);
1534                 }
1535
1536                 mode = drm_mode_create(dev);
1537                 drm_crtc_convert_umode(mode, &crtc_req->mode);
1538                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1539         }
1540
1541         if (crtc_req->count_connectors == 0 && mode) {
1542                 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1543                 ret = -EINVAL;
1544                 goto out;
1545         }
1546
1547         if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1548                 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1549                           crtc_req->count_connectors);
1550                 ret = -EINVAL;
1551                 goto out;
1552         }
1553
1554         if (crtc_req->count_connectors > 0) {
1555                 u32 out_id;
1556
1557                 /* Avoid unbounded kernel memory allocation */
1558                 if (crtc_req->count_connectors > config->num_connector) {
1559                         ret = -EINVAL;
1560                         goto out;
1561                 }
1562
1563                 connector_set = kmalloc(crtc_req->count_connectors *
1564                                         sizeof(struct drm_connector *),
1565                                         GFP_KERNEL);
1566                 if (!connector_set) {
1567                         ret = -ENOMEM;
1568                         goto out;
1569                 }
1570
1571                 for (i = 0; i < crtc_req->count_connectors; i++) {
1572                         set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1573                         if (get_user(out_id, &set_connectors_ptr[i])) {
1574                                 ret = -EFAULT;
1575                                 goto out;
1576                         }
1577
1578                         obj = drm_mode_object_find(dev, out_id,
1579                                                    DRM_MODE_OBJECT_CONNECTOR);
1580                         if (!obj) {
1581                                 DRM_DEBUG_KMS("Connector id %d unknown\n",
1582                                                 out_id);
1583                                 ret = -EINVAL;
1584                                 goto out;
1585                         }
1586                         connector = obj_to_connector(obj);
1587                         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1588                                         connector->base.id,
1589                                         drm_get_connector_name(connector));
1590
1591                         connector_set[i] = connector;
1592                 }
1593         }
1594
1595         set.crtc = crtc;
1596         set.x = crtc_req->x;
1597         set.y = crtc_req->y;
1598         set.mode = mode;
1599         set.connectors = connector_set;
1600         set.num_connectors = crtc_req->count_connectors;
1601         set.fb = fb;
1602         ret = crtc->funcs->set_config(&set);
1603
1604 out:
1605         kfree(connector_set);
1606         mutex_unlock(&dev->mode_config.mutex);
1607         return ret;
1608 }
1609
1610 int drm_mode_cursor_ioctl(struct drm_device *dev,
1611                         void *data, struct drm_file *file_priv)
1612 {
1613         struct drm_mode_cursor *req = data;
1614         struct drm_mode_object *obj;
1615         struct drm_crtc *crtc;
1616         int ret = 0;
1617
1618         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1619                 return -EINVAL;
1620
1621         if (!req->flags) {
1622                 DRM_ERROR("no operation set\n");
1623                 return -EINVAL;
1624         }
1625
1626         mutex_lock(&dev->mode_config.mutex);
1627         obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1628         if (!obj) {
1629                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1630                 ret = -EINVAL;
1631                 goto out;
1632         }
1633         crtc = obj_to_crtc(obj);
1634
1635         if (req->flags & DRM_MODE_CURSOR_BO) {
1636                 if (!crtc->funcs->cursor_set) {
1637                         DRM_ERROR("crtc does not support cursor\n");
1638                         ret = -ENXIO;
1639                         goto out;
1640                 }
1641                 /* Turns off the cursor if handle is 0 */
1642                 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1643                                               req->width, req->height);
1644         }
1645
1646         if (req->flags & DRM_MODE_CURSOR_MOVE) {
1647                 if (crtc->funcs->cursor_move) {
1648                         ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1649                 } else {
1650                         DRM_ERROR("crtc does not support cursor\n");
1651                         ret = -EFAULT;
1652                         goto out;
1653                 }
1654         }
1655 out:
1656         mutex_unlock(&dev->mode_config.mutex);
1657         return ret;
1658 }
1659
1660 /**
1661  * drm_mode_addfb - add an FB to the graphics configuration
1662  * @inode: inode from the ioctl
1663  * @filp: file * from the ioctl
1664  * @cmd: cmd from ioctl
1665  * @arg: arg from ioctl
1666  *
1667  * LOCKING:
1668  * Takes mode config lock.
1669  *
1670  * Add a new FB to the specified CRTC, given a user request.
1671  *
1672  * Called by the user via ioctl.
1673  *
1674  * RETURNS:
1675  * Zero on success, errno on failure.
1676  */
1677 int drm_mode_addfb(struct drm_device *dev,
1678                    void *data, struct drm_file *file_priv)
1679 {
1680         struct drm_mode_fb_cmd *r = data;
1681         struct drm_mode_config *config = &dev->mode_config;
1682         struct drm_framebuffer *fb;
1683         int ret = 0;
1684
1685         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1686                 return -EINVAL;
1687
1688         if ((config->min_width > r->width) || (r->width > config->max_width)) {
1689                 DRM_ERROR("mode new framebuffer width not within limits\n");
1690                 return -EINVAL;
1691         }
1692         if ((config->min_height > r->height) || (r->height > config->max_height)) {
1693                 DRM_ERROR("mode new framebuffer height not within limits\n");
1694                 return -EINVAL;
1695         }
1696
1697         mutex_lock(&dev->mode_config.mutex);
1698
1699         /* TODO check buffer is sufficiently large */
1700         /* TODO setup destructor callback */
1701
1702         fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1703         if (IS_ERR(fb)) {
1704                 DRM_ERROR("could not create framebuffer\n");
1705                 ret = PTR_ERR(fb);
1706                 goto out;
1707         }
1708
1709         r->fb_id = fb->base.id;
1710         list_add(&fb->filp_head, &file_priv->fbs);
1711         DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
1712
1713 out:
1714         mutex_unlock(&dev->mode_config.mutex);
1715         return ret;
1716 }
1717
1718 /**
1719  * drm_mode_rmfb - remove an FB from the configuration
1720  * @inode: inode from the ioctl
1721  * @filp: file * from the ioctl
1722  * @cmd: cmd from ioctl
1723  * @arg: arg from ioctl
1724  *
1725  * LOCKING:
1726  * Takes mode config lock.
1727  *
1728  * Remove the FB specified by the user.
1729  *
1730  * Called by the user via ioctl.
1731  *
1732  * RETURNS:
1733  * Zero on success, errno on failure.
1734  */
1735 int drm_mode_rmfb(struct drm_device *dev,
1736                    void *data, struct drm_file *file_priv)
1737 {
1738         struct drm_mode_object *obj;
1739         struct drm_framebuffer *fb = NULL;
1740         struct drm_framebuffer *fbl = NULL;
1741         uint32_t *id = data;
1742         int ret = 0;
1743         int found = 0;
1744
1745         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1746                 return -EINVAL;
1747
1748         mutex_lock(&dev->mode_config.mutex);
1749         obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1750         /* TODO check that we really get a framebuffer back. */
1751         if (!obj) {
1752                 DRM_ERROR("mode invalid framebuffer id\n");
1753                 ret = -EINVAL;
1754                 goto out;
1755         }
1756         fb = obj_to_fb(obj);
1757
1758         list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1759                 if (fb == fbl)
1760                         found = 1;
1761
1762         if (!found) {
1763                 DRM_ERROR("tried to remove a fb that we didn't own\n");
1764                 ret = -EINVAL;
1765                 goto out;
1766         }
1767
1768         /* TODO release all crtc connected to the framebuffer */
1769         /* TODO unhock the destructor from the buffer object */
1770
1771         list_del(&fb->filp_head);
1772         fb->funcs->destroy(fb);
1773
1774 out:
1775         mutex_unlock(&dev->mode_config.mutex);
1776         return ret;
1777 }
1778
1779 /**
1780  * drm_mode_getfb - get FB info
1781  * @inode: inode from the ioctl
1782  * @filp: file * from the ioctl
1783  * @cmd: cmd from ioctl
1784  * @arg: arg from ioctl
1785  *
1786  * LOCKING:
1787  * Caller? (FIXME)
1788  *
1789  * Lookup the FB given its ID and return info about it.
1790  *
1791  * Called by the user via ioctl.
1792  *
1793  * RETURNS:
1794  * Zero on success, errno on failure.
1795  */
1796 int drm_mode_getfb(struct drm_device *dev,
1797                    void *data, struct drm_file *file_priv)
1798 {
1799         struct drm_mode_fb_cmd *r = data;
1800         struct drm_mode_object *obj;
1801         struct drm_framebuffer *fb;
1802         int ret = 0;
1803
1804         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1805                 return -EINVAL;
1806
1807         mutex_lock(&dev->mode_config.mutex);
1808         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1809         if (!obj) {
1810                 DRM_ERROR("invalid framebuffer id\n");
1811                 ret = -EINVAL;
1812                 goto out;
1813         }
1814         fb = obj_to_fb(obj);
1815
1816         r->height = fb->height;
1817         r->width = fb->width;
1818         r->depth = fb->depth;
1819         r->bpp = fb->bits_per_pixel;
1820         r->pitch = fb->pitch;
1821         fb->funcs->create_handle(fb, file_priv, &r->handle);
1822
1823 out:
1824         mutex_unlock(&dev->mode_config.mutex);
1825         return ret;
1826 }
1827
1828 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1829                            void *data, struct drm_file *file_priv)
1830 {
1831         struct drm_clip_rect __user *clips_ptr;
1832         struct drm_clip_rect *clips = NULL;
1833         struct drm_mode_fb_dirty_cmd *r = data;
1834         struct drm_mode_object *obj;
1835         struct drm_framebuffer *fb;
1836         unsigned flags;
1837         int num_clips;
1838         int ret = 0;
1839
1840         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1841                 return -EINVAL;
1842
1843         mutex_lock(&dev->mode_config.mutex);
1844         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1845         if (!obj) {
1846                 DRM_ERROR("invalid framebuffer id\n");
1847                 ret = -EINVAL;
1848                 goto out_err1;
1849         }
1850         fb = obj_to_fb(obj);
1851
1852         num_clips = r->num_clips;
1853         clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1854
1855         if (!num_clips != !clips_ptr) {
1856                 ret = -EINVAL;
1857                 goto out_err1;
1858         }
1859
1860         flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1861
1862         /* If userspace annotates copy, clips must come in pairs */
1863         if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1864                 ret = -EINVAL;
1865                 goto out_err1;
1866         }
1867
1868         if (num_clips && clips_ptr) {
1869                 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1870                 if (!clips) {
1871                         ret = -ENOMEM;
1872                         goto out_err1;
1873                 }
1874
1875                 ret = copy_from_user(clips, clips_ptr,
1876                                      num_clips * sizeof(*clips));
1877                 if (ret) {
1878                         ret = -EFAULT;
1879                         goto out_err2;
1880                 }
1881         }
1882
1883         if (fb->funcs->dirty) {
1884                 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
1885                                        clips, num_clips);
1886         } else {
1887                 ret = -ENOSYS;
1888                 goto out_err2;
1889         }
1890
1891 out_err2:
1892         kfree(clips);
1893 out_err1:
1894         mutex_unlock(&dev->mode_config.mutex);
1895         return ret;
1896 }
1897
1898
1899 /**
1900  * drm_fb_release - remove and free the FBs on this file
1901  * @filp: file * from the ioctl
1902  *
1903  * LOCKING:
1904  * Takes mode config lock.
1905  *
1906  * Destroy all the FBs associated with @filp.
1907  *
1908  * Called by the user via ioctl.
1909  *
1910  * RETURNS:
1911  * Zero on success, errno on failure.
1912  */
1913 void drm_fb_release(struct drm_file *priv)
1914 {
1915         struct drm_device *dev = priv->minor->dev;
1916         struct drm_framebuffer *fb, *tfb;
1917
1918         mutex_lock(&dev->mode_config.mutex);
1919         list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1920                 list_del(&fb->filp_head);
1921                 fb->funcs->destroy(fb);
1922         }
1923         mutex_unlock(&dev->mode_config.mutex);
1924 }
1925
1926 /**
1927  * drm_mode_attachmode - add a mode to the user mode list
1928  * @dev: DRM device
1929  * @connector: connector to add the mode to
1930  * @mode: mode to add
1931  *
1932  * Add @mode to @connector's user mode list.
1933  */
1934 static int drm_mode_attachmode(struct drm_device *dev,
1935                                struct drm_connector *connector,
1936                                struct drm_display_mode *mode)
1937 {
1938         int ret = 0;
1939
1940         list_add_tail(&mode->head, &connector->user_modes);
1941         return ret;
1942 }
1943
1944 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1945                              struct drm_display_mode *mode)
1946 {
1947         struct drm_connector *connector;
1948         int ret = 0;
1949         struct drm_display_mode *dup_mode;
1950         int need_dup = 0;
1951         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1952                 if (!connector->encoder)
1953                         break;
1954                 if (connector->encoder->crtc == crtc) {
1955                         if (need_dup)
1956                                 dup_mode = drm_mode_duplicate(dev, mode);
1957                         else
1958                                 dup_mode = mode;
1959                         ret = drm_mode_attachmode(dev, connector, dup_mode);
1960                         if (ret)
1961                                 return ret;
1962                         need_dup = 1;
1963                 }
1964         }
1965         return 0;
1966 }
1967 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1968
1969 static int drm_mode_detachmode(struct drm_device *dev,
1970                                struct drm_connector *connector,
1971                                struct drm_display_mode *mode)
1972 {
1973         int found = 0;
1974         int ret = 0;
1975         struct drm_display_mode *match_mode, *t;
1976
1977         list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1978                 if (drm_mode_equal(match_mode, mode)) {
1979                         list_del(&match_mode->head);
1980                         drm_mode_destroy(dev, match_mode);
1981                         found = 1;
1982                         break;
1983                 }
1984         }
1985
1986         if (!found)
1987                 ret = -EINVAL;
1988
1989         return ret;
1990 }
1991
1992 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1993 {
1994         struct drm_connector *connector;
1995
1996         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1997                 drm_mode_detachmode(dev, connector, mode);
1998         }
1999         return 0;
2000 }
2001 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2002
2003 /**
2004  * drm_fb_attachmode - Attach a user mode to an connector
2005  * @inode: inode from the ioctl
2006  * @filp: file * from the ioctl
2007  * @cmd: cmd from ioctl
2008  * @arg: arg from ioctl
2009  *
2010  * This attaches a user specified mode to an connector.
2011  * Called by the user via ioctl.
2012  *
2013  * RETURNS:
2014  * Zero on success, errno on failure.
2015  */
2016 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2017                               void *data, struct drm_file *file_priv)
2018 {
2019         struct drm_mode_mode_cmd *mode_cmd = data;
2020         struct drm_connector *connector;
2021         struct drm_display_mode *mode;
2022         struct drm_mode_object *obj;
2023         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2024         int ret = 0;
2025
2026         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2027                 return -EINVAL;
2028
2029         mutex_lock(&dev->mode_config.mutex);
2030
2031         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2032         if (!obj) {
2033                 ret = -EINVAL;
2034                 goto out;
2035         }
2036         connector = obj_to_connector(obj);
2037
2038         mode = drm_mode_create(dev);
2039         if (!mode) {
2040                 ret = -ENOMEM;
2041                 goto out;
2042         }
2043
2044         drm_crtc_convert_umode(mode, umode);
2045
2046         ret = drm_mode_attachmode(dev, connector, mode);
2047 out:
2048         mutex_unlock(&dev->mode_config.mutex);
2049         return ret;
2050 }
2051
2052
2053 /**
2054  * drm_fb_detachmode - Detach a user specified mode from an connector
2055  * @inode: inode from the ioctl
2056  * @filp: file * from the ioctl
2057  * @cmd: cmd from ioctl
2058  * @arg: arg from ioctl
2059  *
2060  * Called by the user via ioctl.
2061  *
2062  * RETURNS:
2063  * Zero on success, errno on failure.
2064  */
2065 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2066                               void *data, struct drm_file *file_priv)
2067 {
2068         struct drm_mode_object *obj;
2069         struct drm_mode_mode_cmd *mode_cmd = data;
2070         struct drm_connector *connector;
2071         struct drm_display_mode mode;
2072         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2073         int ret = 0;
2074
2075         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2076                 return -EINVAL;
2077
2078         mutex_lock(&dev->mode_config.mutex);
2079
2080         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2081         if (!obj) {
2082                 ret = -EINVAL;
2083                 goto out;
2084         }
2085         connector = obj_to_connector(obj);
2086
2087         drm_crtc_convert_umode(&mode, umode);
2088         ret = drm_mode_detachmode(dev, connector, &mode);
2089 out:
2090         mutex_unlock(&dev->mode_config.mutex);
2091         return ret;
2092 }
2093
2094 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2095                                          const char *name, int num_values)
2096 {
2097         struct drm_property *property = NULL;
2098
2099         property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2100         if (!property)
2101                 return NULL;
2102
2103         if (num_values) {
2104                 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2105                 if (!property->values)
2106                         goto fail;
2107         }
2108
2109         drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2110         property->flags = flags;
2111         property->num_values = num_values;
2112         INIT_LIST_HEAD(&property->enum_blob_list);
2113
2114         if (name)
2115                 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2116
2117         list_add_tail(&property->head, &dev->mode_config.property_list);
2118         return property;
2119 fail:
2120         kfree(property);
2121         return NULL;
2122 }
2123 EXPORT_SYMBOL(drm_property_create);
2124
2125 int drm_property_add_enum(struct drm_property *property, int index,
2126                           uint64_t value, const char *name)
2127 {
2128         struct drm_property_enum *prop_enum;
2129
2130         if (!(property->flags & DRM_MODE_PROP_ENUM))
2131                 return -EINVAL;
2132
2133         if (!list_empty(&property->enum_blob_list)) {
2134                 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2135                         if (prop_enum->value == value) {
2136                                 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2137                                 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2138                                 return 0;
2139                         }
2140                 }
2141         }
2142
2143         prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2144         if (!prop_enum)
2145                 return -ENOMEM;
2146
2147         strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2148         prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2149         prop_enum->value = value;
2150
2151         property->values[index] = value;
2152         list_add_tail(&prop_enum->head, &property->enum_blob_list);
2153         return 0;
2154 }
2155 EXPORT_SYMBOL(drm_property_add_enum);
2156
2157 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2158 {
2159         struct drm_property_enum *prop_enum, *pt;
2160
2161         list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2162                 list_del(&prop_enum->head);
2163                 kfree(prop_enum);
2164         }
2165
2166         if (property->num_values)
2167                 kfree(property->values);
2168         drm_mode_object_put(dev, &property->base);
2169         list_del(&property->head);
2170         kfree(property);
2171 }
2172 EXPORT_SYMBOL(drm_property_destroy);
2173
2174 int drm_connector_attach_property(struct drm_connector *connector,
2175                                struct drm_property *property, uint64_t init_val)
2176 {
2177         int i;
2178
2179         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2180                 if (connector->property_ids[i] == 0) {
2181                         connector->property_ids[i] = property->base.id;
2182                         connector->property_values[i] = init_val;
2183                         break;
2184                 }
2185         }
2186
2187         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2188                 return -EINVAL;
2189         return 0;
2190 }
2191 EXPORT_SYMBOL(drm_connector_attach_property);
2192
2193 int drm_connector_property_set_value(struct drm_connector *connector,
2194                                   struct drm_property *property, uint64_t value)
2195 {
2196         int i;
2197
2198         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2199                 if (connector->property_ids[i] == property->base.id) {
2200                         connector->property_values[i] = value;
2201                         break;
2202                 }
2203         }
2204
2205         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2206                 return -EINVAL;
2207         return 0;
2208 }
2209 EXPORT_SYMBOL(drm_connector_property_set_value);
2210
2211 int drm_connector_property_get_value(struct drm_connector *connector,
2212                                   struct drm_property *property, uint64_t *val)
2213 {
2214         int i;
2215
2216         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2217                 if (connector->property_ids[i] == property->base.id) {
2218                         *val = connector->property_values[i];
2219                         break;
2220                 }
2221         }
2222
2223         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2224                 return -EINVAL;
2225         return 0;
2226 }
2227 EXPORT_SYMBOL(drm_connector_property_get_value);
2228
2229 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2230                                void *data, struct drm_file *file_priv)
2231 {
2232         struct drm_mode_object *obj;
2233         struct drm_mode_get_property *out_resp = data;
2234         struct drm_property *property;
2235         int enum_count = 0;
2236         int blob_count = 0;
2237         int value_count = 0;
2238         int ret = 0, i;
2239         int copied;
2240         struct drm_property_enum *prop_enum;
2241         struct drm_mode_property_enum __user *enum_ptr;
2242         struct drm_property_blob *prop_blob;
2243         uint32_t *blob_id_ptr;
2244         uint64_t __user *values_ptr;
2245         uint32_t __user *blob_length_ptr;
2246
2247         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2248                 return -EINVAL;
2249
2250         mutex_lock(&dev->mode_config.mutex);
2251         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2252         if (!obj) {
2253                 ret = -EINVAL;
2254                 goto done;
2255         }
2256         property = obj_to_property(obj);
2257
2258         if (property->flags & DRM_MODE_PROP_ENUM) {
2259                 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2260                         enum_count++;
2261         } else if (property->flags & DRM_MODE_PROP_BLOB) {
2262                 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2263                         blob_count++;
2264         }
2265
2266         value_count = property->num_values;
2267
2268         strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2269         out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2270         out_resp->flags = property->flags;
2271
2272         if ((out_resp->count_values >= value_count) && value_count) {
2273                 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2274                 for (i = 0; i < value_count; i++) {
2275                         if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2276                                 ret = -EFAULT;
2277                                 goto done;
2278                         }
2279                 }
2280         }
2281         out_resp->count_values = value_count;
2282
2283         if (property->flags & DRM_MODE_PROP_ENUM) {
2284                 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2285                         copied = 0;
2286                         enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2287                         list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2288
2289                                 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2290                                         ret = -EFAULT;
2291                                         goto done;
2292                                 }
2293
2294                                 if (copy_to_user(&enum_ptr[copied].name,
2295                                                  &prop_enum->name, DRM_PROP_NAME_LEN)) {
2296                                         ret = -EFAULT;
2297                                         goto done;
2298                                 }
2299                                 copied++;
2300                         }
2301                 }
2302                 out_resp->count_enum_blobs = enum_count;
2303         }
2304
2305         if (property->flags & DRM_MODE_PROP_BLOB) {
2306                 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2307                         copied = 0;
2308                         blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2309                         blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2310
2311                         list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2312                                 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2313                                         ret = -EFAULT;
2314                                         goto done;
2315                                 }
2316
2317                                 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2318                                         ret = -EFAULT;
2319                                         goto done;
2320                                 }
2321
2322                                 copied++;
2323                         }
2324                 }
2325                 out_resp->count_enum_blobs = blob_count;
2326         }
2327 done:
2328         mutex_unlock(&dev->mode_config.mutex);
2329         return ret;
2330 }
2331
2332 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2333                                                           void *data)
2334 {
2335         struct drm_property_blob *blob;
2336
2337         if (!length || !data)
2338                 return NULL;
2339
2340         blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2341         if (!blob)
2342                 return NULL;
2343
2344         blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2345         blob->length = length;
2346
2347         memcpy(blob->data, data, length);
2348
2349         drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2350
2351         list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2352         return blob;
2353 }
2354
2355 static void drm_property_destroy_blob(struct drm_device *dev,
2356                                struct drm_property_blob *blob)
2357 {
2358         drm_mode_object_put(dev, &blob->base);
2359         list_del(&blob->head);
2360         kfree(blob);
2361 }
2362
2363 int drm_mode_getblob_ioctl(struct drm_device *dev,
2364                            void *data, struct drm_file *file_priv)
2365 {
2366         struct drm_mode_object *obj;
2367         struct drm_mode_get_blob *out_resp = data;
2368         struct drm_property_blob *blob;
2369         int ret = 0;
2370         void *blob_ptr;
2371
2372         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2373                 return -EINVAL;
2374
2375         mutex_lock(&dev->mode_config.mutex);
2376         obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2377         if (!obj) {
2378                 ret = -EINVAL;
2379                 goto done;
2380         }
2381         blob = obj_to_blob(obj);
2382
2383         if (out_resp->length == blob->length) {
2384                 blob_ptr = (void *)(unsigned long)out_resp->data;
2385                 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2386                         ret = -EFAULT;
2387                         goto done;
2388                 }
2389         }
2390         out_resp->length = blob->length;
2391
2392 done:
2393         mutex_unlock(&dev->mode_config.mutex);
2394         return ret;
2395 }
2396
2397 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2398                                             struct edid *edid)
2399 {
2400         struct drm_device *dev = connector->dev;
2401         int ret = 0, size;
2402
2403         if (connector->edid_blob_ptr)
2404                 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2405
2406         /* Delete edid, when there is none. */
2407         if (!edid) {
2408                 connector->edid_blob_ptr = NULL;
2409                 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2410                 return ret;
2411         }
2412
2413         size = EDID_LENGTH * (1 + edid->extensions);
2414         connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
2415                                                             size, edid);
2416
2417         ret = drm_connector_property_set_value(connector,
2418                                                dev->mode_config.edid_property,
2419                                                connector->edid_blob_ptr->base.id);
2420
2421         return ret;
2422 }
2423 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2424
2425 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2426                                        void *data, struct drm_file *file_priv)
2427 {
2428         struct drm_mode_connector_set_property *out_resp = data;
2429         struct drm_mode_object *obj;
2430         struct drm_property *property;
2431         struct drm_connector *connector;
2432         int ret = -EINVAL;
2433         int i;
2434
2435         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2436                 return -EINVAL;
2437
2438         mutex_lock(&dev->mode_config.mutex);
2439
2440         obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2441         if (!obj) {
2442                 goto out;
2443         }
2444         connector = obj_to_connector(obj);
2445
2446         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2447                 if (connector->property_ids[i] == out_resp->prop_id)
2448                         break;
2449         }
2450
2451         if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2452                 goto out;
2453         }
2454
2455         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2456         if (!obj) {
2457                 goto out;
2458         }
2459         property = obj_to_property(obj);
2460
2461         if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2462                 goto out;
2463
2464         if (property->flags & DRM_MODE_PROP_RANGE) {
2465                 if (out_resp->value < property->values[0])
2466                         goto out;
2467
2468                 if (out_resp->value > property->values[1])
2469                         goto out;
2470         } else {
2471                 int found = 0;
2472                 for (i = 0; i < property->num_values; i++) {
2473                         if (property->values[i] == out_resp->value) {
2474                                 found = 1;
2475                                 break;
2476                         }
2477                 }
2478                 if (!found) {
2479                         goto out;
2480                 }
2481         }
2482
2483         /* Do DPMS ourselves */
2484         if (property == connector->dev->mode_config.dpms_property) {
2485                 if (connector->funcs->dpms)
2486                         (*connector->funcs->dpms)(connector, (int) out_resp->value);
2487                 ret = 0;
2488         } else if (connector->funcs->set_property)
2489                 ret = connector->funcs->set_property(connector, property, out_resp->value);
2490
2491         /* store the property value if successful */
2492         if (!ret)
2493                 drm_connector_property_set_value(connector, property, out_resp->value);
2494 out:
2495         mutex_unlock(&dev->mode_config.mutex);
2496         return ret;
2497 }
2498
2499 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2500                                       struct drm_encoder *encoder)
2501 {
2502         int i;
2503
2504         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2505                 if (connector->encoder_ids[i] == 0) {
2506                         connector->encoder_ids[i] = encoder->base.id;
2507                         return 0;
2508                 }
2509         }
2510         return -ENOMEM;
2511 }
2512 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2513
2514 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2515                                     struct drm_encoder *encoder)
2516 {
2517         int i;
2518         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2519                 if (connector->encoder_ids[i] == encoder->base.id) {
2520                         connector->encoder_ids[i] = 0;
2521                         if (connector->encoder == encoder)
2522                                 connector->encoder = NULL;
2523                         break;
2524                 }
2525         }
2526 }
2527 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2528
2529 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2530                                   int gamma_size)
2531 {
2532         crtc->gamma_size = gamma_size;
2533
2534         crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2535         if (!crtc->gamma_store) {
2536                 crtc->gamma_size = 0;
2537                 return false;
2538         }
2539
2540         return true;
2541 }
2542 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2543
2544 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2545                              void *data, struct drm_file *file_priv)
2546 {
2547         struct drm_mode_crtc_lut *crtc_lut = data;
2548         struct drm_mode_object *obj;
2549         struct drm_crtc *crtc;
2550         void *r_base, *g_base, *b_base;
2551         int size;
2552         int ret = 0;
2553
2554         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2555                 return -EINVAL;
2556
2557         mutex_lock(&dev->mode_config.mutex);
2558         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2559         if (!obj) {
2560                 ret = -EINVAL;
2561                 goto out;
2562         }
2563         crtc = obj_to_crtc(obj);
2564
2565         /* memcpy into gamma store */
2566         if (crtc_lut->gamma_size != crtc->gamma_size) {
2567                 ret = -EINVAL;
2568                 goto out;
2569         }
2570
2571         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2572         r_base = crtc->gamma_store;
2573         if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2574                 ret = -EFAULT;
2575                 goto out;
2576         }
2577
2578         g_base = r_base + size;
2579         if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2580                 ret = -EFAULT;
2581                 goto out;
2582         }
2583
2584         b_base = g_base + size;
2585         if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2586                 ret = -EFAULT;
2587                 goto out;
2588         }
2589
2590         crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
2591
2592 out:
2593         mutex_unlock(&dev->mode_config.mutex);
2594         return ret;
2595
2596 }
2597
2598 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2599                              void *data, struct drm_file *file_priv)
2600 {
2601         struct drm_mode_crtc_lut *crtc_lut = data;
2602         struct drm_mode_object *obj;
2603         struct drm_crtc *crtc;
2604         void *r_base, *g_base, *b_base;
2605         int size;
2606         int ret = 0;
2607
2608         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2609                 return -EINVAL;
2610
2611         mutex_lock(&dev->mode_config.mutex);
2612         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2613         if (!obj) {
2614                 ret = -EINVAL;
2615                 goto out;
2616         }
2617         crtc = obj_to_crtc(obj);
2618
2619         /* memcpy into gamma store */
2620         if (crtc_lut->gamma_size != crtc->gamma_size) {
2621                 ret = -EINVAL;
2622                 goto out;
2623         }
2624
2625         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2626         r_base = crtc->gamma_store;
2627         if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2628                 ret = -EFAULT;
2629                 goto out;
2630         }
2631
2632         g_base = r_base + size;
2633         if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2634                 ret = -EFAULT;
2635                 goto out;
2636         }
2637
2638         b_base = g_base + size;
2639         if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2640                 ret = -EFAULT;
2641                 goto out;
2642         }
2643 out:
2644         mutex_unlock(&dev->mode_config.mutex);
2645         return ret;
2646 }
2647
2648 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2649                              void *data, struct drm_file *file_priv)
2650 {
2651         struct drm_mode_crtc_page_flip *page_flip = data;
2652         struct drm_mode_object *obj;
2653         struct drm_crtc *crtc;
2654         struct drm_framebuffer *fb;
2655         struct drm_pending_vblank_event *e = NULL;
2656         unsigned long flags;
2657         int ret = -EINVAL;
2658
2659         if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2660             page_flip->reserved != 0)
2661                 return -EINVAL;
2662
2663         mutex_lock(&dev->mode_config.mutex);
2664         obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2665         if (!obj)
2666                 goto out;
2667         crtc = obj_to_crtc(obj);
2668
2669         if (crtc->fb == NULL) {
2670                 /* The framebuffer is currently unbound, presumably
2671                  * due to a hotplug event, that userspace has not
2672                  * yet discovered.
2673                  */
2674                 ret = -EBUSY;
2675                 goto out;
2676         }
2677
2678         if (crtc->funcs->page_flip == NULL)
2679                 goto out;
2680
2681         obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2682         if (!obj)
2683                 goto out;
2684         fb = obj_to_fb(obj);
2685
2686         if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2687                 ret = -ENOMEM;
2688                 spin_lock_irqsave(&dev->event_lock, flags);
2689                 if (file_priv->event_space < sizeof e->event) {
2690                         spin_unlock_irqrestore(&dev->event_lock, flags);
2691                         goto out;
2692                 }
2693                 file_priv->event_space -= sizeof e->event;
2694                 spin_unlock_irqrestore(&dev->event_lock, flags);
2695
2696                 e = kzalloc(sizeof *e, GFP_KERNEL);
2697                 if (e == NULL) {
2698                         spin_lock_irqsave(&dev->event_lock, flags);
2699                         file_priv->event_space += sizeof e->event;
2700                         spin_unlock_irqrestore(&dev->event_lock, flags);
2701                         goto out;
2702                 }
2703
2704                 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
2705                 e->event.base.length = sizeof e->event;
2706                 e->event.user_data = page_flip->user_data;
2707                 e->base.event = &e->event.base;
2708                 e->base.file_priv = file_priv;
2709                 e->base.destroy =
2710                         (void (*) (struct drm_pending_event *)) kfree;
2711         }
2712
2713         ret = crtc->funcs->page_flip(crtc, fb, e);
2714         if (ret) {
2715                 spin_lock_irqsave(&dev->event_lock, flags);
2716                 file_priv->event_space += sizeof e->event;
2717                 spin_unlock_irqrestore(&dev->event_lock, flags);
2718                 kfree(e);
2719         }
2720
2721 out:
2722         mutex_unlock(&dev->mode_config.mutex);
2723         return ret;
2724 }
2725
2726 void drm_mode_config_reset(struct drm_device *dev)
2727 {
2728         struct drm_crtc *crtc;
2729         struct drm_encoder *encoder;
2730         struct drm_connector *connector;
2731
2732         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
2733                 if (crtc->funcs->reset)
2734                         crtc->funcs->reset(crtc);
2735
2736         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
2737                 if (encoder->funcs->reset)
2738                         encoder->funcs->reset(encoder);
2739
2740         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
2741                 if (connector->funcs->reset)
2742                         connector->funcs->reset(connector);
2743 }
2744 EXPORT_SYMBOL(drm_mode_config_reset);
2745
2746 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
2747                                void *data, struct drm_file *file_priv)
2748 {
2749         struct drm_mode_create_dumb *args = data;
2750
2751         if (!dev->driver->dumb_create)
2752                 return -ENOSYS;
2753         return dev->driver->dumb_create(file_priv, dev, args);
2754 }
2755
2756 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
2757                              void *data, struct drm_file *file_priv)
2758 {
2759         struct drm_mode_map_dumb *args = data;
2760
2761         /* call driver ioctl to get mmap offset */
2762         if (!dev->driver->dumb_map_offset)
2763                 return -ENOSYS;
2764
2765         return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
2766 }
2767
2768 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
2769                                 void *data, struct drm_file *file_priv)
2770 {
2771         struct drm_mode_destroy_dumb *args = data;
2772
2773         if (!dev->driver->dumb_destroy)
2774                 return -ENOSYS;
2775
2776         return dev->driver->dumb_destroy(file_priv, dev, args->handle);
2777 }