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 <linux/export.h>
  35 #include "drm.h"
  36 #include "drmP.h"
  37 #include "drm_crtc.h"
  38 #include "drm_edid.h"
  39
  40 struct drm_prop_enum_list {
  41         int type;
  42         char *name;
  43 };
  44
  45 /* Avoid boilerplate.  I'm tired of typing. */
  46 #define DRM_ENUM_NAME_FN(fnname, list)                          \
  47         char *fnname(int val)                                   \
  48         {                                                       \
  49                 int i;                                          \
  50                 for (i = 0; i < ARRAY_SIZE(list); i++) {        \
  51                         if (list[i].type == val)                \
  52                                 return list[i].name;            \
  53                 }                                               \
  54                 return "(unknown)";                             \
  55         }
  56
  57 /*
  58  * Global properties
  59  */
  60 static struct drm_prop_enum_list drm_dpms_enum_list[] =
  61 {       { DRM_MODE_DPMS_ON, "On" },
  62         { DRM_MODE_DPMS_STANDBY, "Standby" },
  63         { DRM_MODE_DPMS_SUSPEND, "Suspend" },
  64         { DRM_MODE_DPMS_OFF, "Off" }
  65 };
  66
  67 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
  68
  69 /*
  70  * Optional properties
  71  */
  72 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
  73 {
  74         { DRM_MODE_SCALE_NONE, "None" },
  75         { DRM_MODE_SCALE_FULLSCREEN, "Full" },
  76         { DRM_MODE_SCALE_CENTER, "Center" },
  77         { DRM_MODE_SCALE_ASPECT, "Full aspect" },
  78 };
  79
  80 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
  81 {
  82         { DRM_MODE_DITHERING_OFF, "Off" },
  83         { DRM_MODE_DITHERING_ON, "On" },
  84         { DRM_MODE_DITHERING_AUTO, "Automatic" },
  85 };
  86
  87 /*
  88  * Non-global properties, but "required" for certain connectors.
  89  */
  90 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
  91 {
  92         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
  93         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  94         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
  95 };
  96
  97 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
  98
  99 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
 100 {
 101         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 102         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
 103         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
 104 };
 105
 106 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
 107                  drm_dvi_i_subconnector_enum_list)
 108
 109 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
 110 {
 111         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
 112         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 113         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 114         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 115         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 116 };
 117
 118 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
 119
 120 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
 121 {
 122         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 123         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 124         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 125         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 126         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 127 };
 128
 129 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
 130                  drm_tv_subconnector_enum_list)
 131
 132 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
 133         { DRM_MODE_DIRTY_OFF,      "Off"      },
 134         { DRM_MODE_DIRTY_ON,       "On"       },
 135         { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
 136 };
 137
 138 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
 139                  drm_dirty_info_enum_list)
 140
 141 struct drm_conn_prop_enum_list {
 142         int type;
 143         char *name;
 144         int count;
 145 };
 146
 147 /*
 148  * Connector and encoder types.
 149  */
 150 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
 151 {       { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
 152         { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
 153         { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
 154         { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
 155         { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
 156         { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
 157         { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
 158         { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
 159         { DRM_MODE_CONNECTOR_Component, "Component", 0 },
 160         { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
 161         { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
 162         { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
 163         { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
 164         { DRM_MODE_CONNECTOR_TV, "TV", 0 },
 165         { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
 166         { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
 167 };
 168
 169 static struct drm_prop_enum_list drm_encoder_enum_list[] =
 170 {       { DRM_MODE_ENCODER_NONE, "None" },
 171         { DRM_MODE_ENCODER_DAC, "DAC" },
 172         { DRM_MODE_ENCODER_TMDS, "TMDS" },
 173         { DRM_MODE_ENCODER_LVDS, "LVDS" },
 174         { DRM_MODE_ENCODER_TVDAC, "TV" },
 175         { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
 176 };
 177
 178 char *drm_get_encoder_name(struct drm_encoder *encoder)
 179 {
 180         static char buf[32];
 181
 182         snprintf(buf, 32, "%s-%d",
 183                  drm_encoder_enum_list[encoder->encoder_type].name,
 184                  encoder->base.id);
 185         return buf;
 186 }
 187 EXPORT_SYMBOL(drm_get_encoder_name);
 188
 189 char *drm_get_connector_name(struct drm_connector *connector)
 190 {
 191         static char buf[32];
 192
 193         snprintf(buf, 32, "%s-%d",
 194                  drm_connector_enum_list[connector->connector_type].name,
 195                  connector->connector_type_id);
 196         return buf;
 197 }
 198 EXPORT_SYMBOL(drm_get_connector_name);
 199
 200 char *drm_get_connector_status_name(enum drm_connector_status status)
 201 {
 202         if (status == connector_status_connected)
 203                 return "connected";
 204         else if (status == connector_status_disconnected)
 205                 return "disconnected";
 206         else
 207                 return "unknown";
 208 }
 209
 210 /**
 211  * drm_mode_object_get - allocate a new identifier
 212  * @dev: DRM device
 213  * @ptr: object pointer, used to generate unique ID
 214  * @type: object type
 215  *
 216  * LOCKING:
 217  *
 218  * Create a unique identifier based on @ptr in @dev's identifier space.  Used
 219  * for tracking modes, CRTCs and connectors.
 220  *
 221  * RETURNS:
 222  * New unique (relative to other objects in @dev) integer identifier for the
 223  * object.
 224  */
 225 static int drm_mode_object_get(struct drm_device *dev,
 226                                struct drm_mode_object *obj, uint32_t obj_type)
 227 {
 228         int new_id = 0;
 229         int ret;
 230
 231 again:
 232         if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
 233                 DRM_ERROR("Ran out memory getting a mode number\n");
 234                 return -EINVAL;
 235         }
 236
 237         mutex_lock(&dev->mode_config.idr_mutex);
 238         ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
 239         mutex_unlock(&dev->mode_config.idr_mutex);
 240         if (ret == -EAGAIN)
 241                 goto again;
 242
 243         obj->id = new_id;
 244         obj->type = obj_type;
 245         return 0;
 246 }
 247
 248 /**
 249  * drm_mode_object_put - free an identifer
 250  * @dev: DRM device
 251  * @id: ID to free
 252  *
 253  * LOCKING:
 254  * Caller must hold DRM mode_config lock.
 255  *
 256  * Free @id from @dev's unique identifier pool.
 257  */
 258 static void drm_mode_object_put(struct drm_device *dev,
 259                                 struct drm_mode_object *object)
 260 {
 261         mutex_lock(&dev->mode_config.idr_mutex);
 262         idr_remove(&dev->mode_config.crtc_idr, object->id);
 263         mutex_unlock(&dev->mode_config.idr_mutex);
 264 }
 265
 266 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
 267                 uint32_t id, uint32_t type)
 268 {
 269         struct drm_mode_object *obj = NULL;
 270
 271         mutex_lock(&dev->mode_config.idr_mutex);
 272         obj = idr_find(&dev->mode_config.crtc_idr, id);
 273         if (!obj || (obj->type != type) || (obj->id != id))
 274                 obj = NULL;
 275         mutex_unlock(&dev->mode_config.idr_mutex);
 276
 277         return obj;
 278 }
 279 EXPORT_SYMBOL(drm_mode_object_find);
 280
 281 /**
 282  * drm_framebuffer_init - initialize a framebuffer
 283  * @dev: DRM device
 284  *
 285  * LOCKING:
 286  * Caller must hold mode config lock.
 287  *
 288  * Allocates an ID for the framebuffer's parent mode object, sets its mode
 289  * functions & device file and adds it to the master fd list.
 290  *
 291  * RETURNS:
 292  * Zero on success, error code on failure.
 293  */
 294 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
 295                          const struct drm_framebuffer_funcs *funcs)
 296 {
 297         int ret;
 298
 299         ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
 300         if (ret) {
 301                 return ret;
 302         }
 303
 304         fb->dev = dev;
 305         fb->funcs = funcs;
 306         dev->mode_config.num_fb++;
 307         list_add(&fb->head, &dev->mode_config.fb_list);
 308
 309         return 0;
 310 }
 311 EXPORT_SYMBOL(drm_framebuffer_init);
 312
 313 /**
 314  * drm_framebuffer_cleanup - remove a framebuffer object
 315  * @fb: framebuffer to remove
 316  *
 317  * LOCKING:
 318  * Caller must hold mode config lock.
 319  *
 320  * Scans all the CRTCs in @dev's mode_config.  If they're using @fb, removes
 321  * it, setting it to NULL.
 322  */
 323 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
 324 {
 325         struct drm_device *dev = fb->dev;
 326         struct drm_crtc *crtc;
 327         struct drm_mode_set set;
 328         int ret;
 329
 330         /* remove from any CRTC */
 331         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 332                 if (crtc->fb == fb) {
 333                         /* should turn off the crtc */
 334                         memset(&set, 0, sizeof(struct drm_mode_set));
 335                         set.crtc = crtc;
 336                         set.fb = NULL;
 337                         ret = crtc->funcs->set_config(&set);
 338                         if (ret)
 339                                 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
 340                 }
 341         }
 342
 343         drm_mode_object_put(dev, &fb->base);
 344         list_del(&fb->head);
 345         dev->mode_config.num_fb--;
 346 }
 347 EXPORT_SYMBOL(drm_framebuffer_cleanup);
 348
 349 /**
 350  * drm_crtc_init - Initialise a new CRTC object
 351  * @dev: DRM device
 352  * @crtc: CRTC object to init
 353  * @funcs: callbacks for the new CRTC
 354  *
 355  * LOCKING:
 356  * Caller must hold mode config lock.
 357  *
 358  * Inits a new object created as base part of an driver crtc object.
 359  */
 360 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
 361                    const struct drm_crtc_funcs *funcs)
 362 {
 363         crtc->dev = dev;
 364         crtc->funcs = funcs;
 365
 366         mutex_lock(&dev->mode_config.mutex);
 367         drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
 368
 369         list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
 370         dev->mode_config.num_crtc++;
 371         mutex_unlock(&dev->mode_config.mutex);
 372 }
 373 EXPORT_SYMBOL(drm_crtc_init);
 374
 375 /**
 376  * drm_crtc_cleanup - Cleans up the core crtc usage.
 377  * @crtc: CRTC to cleanup
 378  *
 379  * LOCKING:
 380  * Caller must hold mode config lock.
 381  *
 382  * Cleanup @crtc. Removes from drm modesetting space
 383  * does NOT free object, caller does that.
 384  */
 385 void drm_crtc_cleanup(struct drm_crtc *crtc)
 386 {
 387         struct drm_device *dev = crtc->dev;
 388
 389         if (crtc->gamma_store) {
 390                 kfree(crtc->gamma_store);
 391                 crtc->gamma_store = NULL;
 392         }
 393
 394         drm_mode_object_put(dev, &crtc->base);
 395         list_del(&crtc->head);
 396         dev->mode_config.num_crtc--;
 397 }
 398 EXPORT_SYMBOL(drm_crtc_cleanup);
 399
 400 /**
 401  * drm_mode_probed_add - add a mode to a connector's probed mode list
 402  * @connector: connector the new mode
 403  * @mode: mode data
 404  *
 405  * LOCKING:
 406  * Caller must hold mode config lock.
 407  *
 408  * Add @mode to @connector's mode list for later use.
 409  */
 410 void drm_mode_probed_add(struct drm_connector *connector,
 411                          struct drm_display_mode *mode)
 412 {
 413         list_add(&mode->head, &connector->probed_modes);
 414 }
 415 EXPORT_SYMBOL(drm_mode_probed_add);
 416
 417 /**
 418  * drm_mode_remove - remove and free a mode
 419  * @connector: connector list to modify
 420  * @mode: mode to remove
 421  *
 422  * LOCKING:
 423  * Caller must hold mode config lock.
 424  *
 425  * Remove @mode from @connector's mode list, then free it.
 426  */
 427 void drm_mode_remove(struct drm_connector *connector,
 428                      struct drm_display_mode *mode)
 429 {
 430         list_del(&mode->head);
 431         kfree(mode);
 432 }
 433 EXPORT_SYMBOL(drm_mode_remove);
 434
 435 /**
 436  * drm_connector_init - Init a preallocated connector
 437  * @dev: DRM device
 438  * @connector: the connector to init
 439  * @funcs: callbacks for this connector
 440  * @name: user visible name of the connector
 441  *
 442  * LOCKING:
 443  * Caller must hold @dev's mode_config lock.
 444  *
 445  * Initialises a preallocated connector. Connectors should be
 446  * subclassed as part of driver connector objects.
 447  */
 448 void drm_connector_init(struct drm_device *dev,
 449                      struct drm_connector *connector,
 450                      const struct drm_connector_funcs *funcs,
 451                      int connector_type)
 452 {
 453         mutex_lock(&dev->mode_config.mutex);
 454
 455         connector->dev = dev;
 456         connector->funcs = funcs;
 457         drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
 458         connector->connector_type = connector_type;
 459         connector->connector_type_id =
 460                 ++drm_connector_enum_list[connector_type].count; /* TODO */
 461         INIT_LIST_HEAD(&connector->user_modes);
 462         INIT_LIST_HEAD(&connector->probed_modes);
 463         INIT_LIST_HEAD(&connector->modes);
 464         connector->edid_blob_ptr = NULL;
 465
 466         list_add_tail(&connector->head, &dev->mode_config.connector_list);
 467         dev->mode_config.num_connector++;
 468
 469         if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
 470                 drm_connector_attach_property(connector,
 471                                               dev->mode_config.edid_property,
 472                                               0);
 473
 474         drm_connector_attach_property(connector,
 475                                       dev->mode_config.dpms_property, 0);
 476
 477         mutex_unlock(&dev->mode_config.mutex);
 478 }
 479 EXPORT_SYMBOL(drm_connector_init);
 480
 481 /**
 482  * drm_connector_cleanup - cleans up an initialised connector
 483  * @connector: connector to cleanup
 484  *
 485  * LOCKING:
 486  * Caller must hold @dev's mode_config lock.
 487  *
 488  * Cleans up the connector but doesn't free the object.
 489  */
 490 void drm_connector_cleanup(struct drm_connector *connector)
 491 {
 492         struct drm_device *dev = connector->dev;
 493         struct drm_display_mode *mode, *t;
 494
 495         list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
 496                 drm_mode_remove(connector, mode);
 497
 498         list_for_each_entry_safe(mode, t, &connector->modes, head)
 499                 drm_mode_remove(connector, mode);
 500
 501         list_for_each_entry_safe(mode, t, &connector->user_modes, head)
 502                 drm_mode_remove(connector, mode);
 503
 504         mutex_lock(&dev->mode_config.mutex);
 505         drm_mode_object_put(dev, &connector->base);
 506         list_del(&connector->head);
 507         dev->mode_config.num_connector--;
 508         mutex_unlock(&dev->mode_config.mutex);
 509 }
 510 EXPORT_SYMBOL(drm_connector_cleanup);
 511
 512 void drm_encoder_init(struct drm_device *dev,
 513                       struct drm_encoder *encoder,
 514                       const struct drm_encoder_funcs *funcs,
 515                       int encoder_type)
 516 {
 517         mutex_lock(&dev->mode_config.mutex);
 518
 519         encoder->dev = dev;
 520
 521         drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
 522         encoder->encoder_type = encoder_type;
 523         encoder->funcs = funcs;
 524
 525         list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
 526         dev->mode_config.num_encoder++;
 527
 528         mutex_unlock(&dev->mode_config.mutex);
 529 }
 530 EXPORT_SYMBOL(drm_encoder_init);
 531
 532 void drm_encoder_cleanup(struct drm_encoder *encoder)
 533 {
 534         struct drm_device *dev = encoder->dev;
 535         mutex_lock(&dev->mode_config.mutex);
 536         drm_mode_object_put(dev, &encoder->base);
 537         list_del(&encoder->head);
 538         dev->mode_config.num_encoder--;
 539         mutex_unlock(&dev->mode_config.mutex);
 540 }
 541 EXPORT_SYMBOL(drm_encoder_cleanup);
 542
 543 /**
 544  * drm_mode_create - create a new display mode
 545  * @dev: DRM device
 546  *
 547  * LOCKING:
 548  * Caller must hold DRM mode_config lock.
 549  *
 550  * Create a new drm_display_mode, give it an ID, and return it.
 551  *
 552  * RETURNS:
 553  * Pointer to new mode on success, NULL on error.
 554  */
 555 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
 556 {
 557         struct drm_display_mode *nmode;
 558
 559         nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
 560         if (!nmode)
 561                 return NULL;
 562
 563         drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
 564         return nmode;
 565 }
 566 EXPORT_SYMBOL(drm_mode_create);
 567
 568 /**
 569  * drm_mode_destroy - remove a mode
 570  * @dev: DRM device
 571  * @mode: mode to remove
 572  *
 573  * LOCKING:
 574  * Caller must hold mode config lock.
 575  *
 576  * Free @mode's unique identifier, then free it.
 577  */
 578 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
 579 {
 580         drm_mode_object_put(dev, &mode->base);
 581
 582         kfree(mode);
 583 }
 584 EXPORT_SYMBOL(drm_mode_destroy);
 585
 586 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 587 {
 588         struct drm_property *edid;
 589         struct drm_property *dpms;
 590         int i;
 591
 592         /*
 593          * Standard properties (apply to all connectors)
 594          */
 595         edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
 596                                    DRM_MODE_PROP_IMMUTABLE,
 597                                    "EDID", 0);
 598         dev->mode_config.edid_property = edid;
 599
 600         dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 601                                    "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
 602         for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
 603                 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
 604                                       drm_dpms_enum_list[i].name);
 605         dev->mode_config.dpms_property = dpms;
 606
 607         return 0;
 608 }
 609
 610 /**
 611  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
 612  * @dev: DRM device
 613  *
 614  * Called by a driver the first time a DVI-I connector is made.
 615  */
 616 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
 617 {
 618         struct drm_property *dvi_i_selector;
 619         struct drm_property *dvi_i_subconnector;
 620         int i;
 621
 622         if (dev->mode_config.dvi_i_select_subconnector_property)
 623                 return 0;
 624
 625         dvi_i_selector =
 626                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 627                                     "select subconnector",
 628                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
 629         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
 630                 drm_property_add_enum(dvi_i_selector, i,
 631                                       drm_dvi_i_select_enum_list[i].type,
 632                                       drm_dvi_i_select_enum_list[i].name);
 633         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
 634
 635         dvi_i_subconnector =
 636                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 637                                     DRM_MODE_PROP_IMMUTABLE,
 638                                     "subconnector",
 639                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
 640         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
 641                 drm_property_add_enum(dvi_i_subconnector, i,
 642                                       drm_dvi_i_subconnector_enum_list[i].type,
 643                                       drm_dvi_i_subconnector_enum_list[i].name);
 644         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
 645
 646         return 0;
 647 }
 648 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
 649
 650 /**
 651  * drm_create_tv_properties - create TV specific connector properties
 652  * @dev: DRM device
 653  * @num_modes: number of different TV formats (modes) supported
 654  * @modes: array of pointers to strings containing name of each format
 655  *
 656  * Called by a driver's TV initialization routine, this function creates
 657  * the TV specific connector properties for a given device.  Caller is
 658  * responsible for allocating a list of format names and passing them to
 659  * this routine.
 660  */
 661 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
 662                                   char *modes[])
 663 {
 664         struct drm_property *tv_selector;
 665         struct drm_property *tv_subconnector;
 666         int i;
 667
 668         if (dev->mode_config.tv_select_subconnector_property)
 669                 return 0;
 670
 671         /*
 672          * Basic connector properties
 673          */
 674         tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 675                                           "select subconnector",
 676                                           ARRAY_SIZE(drm_tv_select_enum_list));
 677         for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
 678                 drm_property_add_enum(tv_selector, i,
 679                                       drm_tv_select_enum_list[i].type,
 680                                       drm_tv_select_enum_list[i].name);
 681         dev->mode_config.tv_select_subconnector_property = tv_selector;
 682
 683         tv_subconnector =
 684                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 685                                     DRM_MODE_PROP_IMMUTABLE, "subconnector",
 686                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
 687         for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
 688                 drm_property_add_enum(tv_subconnector, i,
 689                                       drm_tv_subconnector_enum_list[i].type,
 690                                       drm_tv_subconnector_enum_list[i].name);
 691         dev->mode_config.tv_subconnector_property = tv_subconnector;
 692
 693         /*
 694          * Other, TV specific properties: margins & TV modes.
 695          */
 696         dev->mode_config.tv_left_margin_property =
 697                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 698                                     "left margin", 2);
 699         dev->mode_config.tv_left_margin_property->values[0] = 0;
 700         dev->mode_config.tv_left_margin_property->values[1] = 100;
 701
 702         dev->mode_config.tv_right_margin_property =
 703                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 704                                     "right margin", 2);
 705         dev->mode_config.tv_right_margin_property->values[0] = 0;
 706         dev->mode_config.tv_right_margin_property->values[1] = 100;
 707
 708         dev->mode_config.tv_top_margin_property =
 709                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 710                                     "top margin", 2);
 711         dev->mode_config.tv_top_margin_property->values[0] = 0;
 712         dev->mode_config.tv_top_margin_property->values[1] = 100;
 713
 714         dev->mode_config.tv_bottom_margin_property =
 715                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 716                                     "bottom margin", 2);
 717         dev->mode_config.tv_bottom_margin_property->values[0] = 0;
 718         dev->mode_config.tv_bottom_margin_property->values[1] = 100;
 719
 720         dev->mode_config.tv_mode_property =
 721                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 722                                     "mode", num_modes);
 723         for (i = 0; i < num_modes; i++)
 724                 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
 725                                       i, modes[i]);
 726
 727         dev->mode_config.tv_brightness_property =
 728                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 729                                     "brightness", 2);
 730         dev->mode_config.tv_brightness_property->values[0] = 0;
 731         dev->mode_config.tv_brightness_property->values[1] = 100;
 732
 733         dev->mode_config.tv_contrast_property =
 734                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 735                                     "contrast", 2);
 736         dev->mode_config.tv_contrast_property->values[0] = 0;
 737         dev->mode_config.tv_contrast_property->values[1] = 100;
 738
 739         dev->mode_config.tv_flicker_reduction_property =
 740                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 741                                     "flicker reduction", 2);
 742         dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
 743         dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
 744
 745         dev->mode_config.tv_overscan_property =
 746                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 747                                     "overscan", 2);
 748         dev->mode_config.tv_overscan_property->values[0] = 0;
 749         dev->mode_config.tv_overscan_property->values[1] = 100;
 750
 751         dev->mode_config.tv_saturation_property =
 752                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 753                                     "saturation", 2);
 754         dev->mode_config.tv_saturation_property->values[0] = 0;
 755         dev->mode_config.tv_saturation_property->values[1] = 100;
 756
 757         dev->mode_config.tv_hue_property =
 758                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 759                                     "hue", 2);
 760         dev->mode_config.tv_hue_property->values[0] = 0;
 761         dev->mode_config.tv_hue_property->values[1] = 100;
 762
 763         return 0;
 764 }
 765 EXPORT_SYMBOL(drm_mode_create_tv_properties);
 766
 767 /**
 768  * drm_mode_create_scaling_mode_property - create scaling mode property
 769  * @dev: DRM device
 770  *
 771  * Called by a driver the first time it's needed, must be attached to desired
 772  * connectors.
 773  */
 774 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
 775 {
 776         struct drm_property *scaling_mode;
 777         int i;
 778
 779         if (dev->mode_config.scaling_mode_property)
 780                 return 0;
 781
 782         scaling_mode =
 783                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
 784                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
 785         for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
 786                 drm_property_add_enum(scaling_mode, i,
 787                                       drm_scaling_mode_enum_list[i].type,
 788                                       drm_scaling_mode_enum_list[i].name);
 789
 790         dev->mode_config.scaling_mode_property = scaling_mode;
 791
 792         return 0;
 793 }
 794 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
 795
 796 /**
 797  * drm_mode_create_dithering_property - create dithering property
 798  * @dev: DRM device
 799  *
 800  * Called by a driver the first time it's needed, must be attached to desired
 801  * connectors.
 802  */
 803 int drm_mode_create_dithering_property(struct drm_device *dev)
 804 {
 805         struct drm_property *dithering_mode;
 806         int i;
 807
 808         if (dev->mode_config.dithering_mode_property)
 809                 return 0;
 810
 811         dithering_mode =
 812                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
 813                                     ARRAY_SIZE(drm_dithering_mode_enum_list));
 814         for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
 815                 drm_property_add_enum(dithering_mode, i,
 816                                       drm_dithering_mode_enum_list[i].type,
 817                                       drm_dithering_mode_enum_list[i].name);
 818         dev->mode_config.dithering_mode_property = dithering_mode;
 819
 820         return 0;
 821 }
 822 EXPORT_SYMBOL(drm_mode_create_dithering_property);
 823
 824 /**
 825  * drm_mode_create_dirty_property - create dirty property
 826  * @dev: DRM device
 827  *
 828  * Called by a driver the first time it's needed, must be attached to desired
 829  * connectors.
 830  */
 831 int drm_mode_create_dirty_info_property(struct drm_device *dev)
 832 {
 833         struct drm_property *dirty_info;
 834         int i;
 835
 836         if (dev->mode_config.dirty_info_property)
 837                 return 0;
 838
 839         dirty_info =
 840                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 841                                     DRM_MODE_PROP_IMMUTABLE,
 842                                     "dirty",
 843                                     ARRAY_SIZE(drm_dirty_info_enum_list));
 844         for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
 845                 drm_property_add_enum(dirty_info, i,
 846                                       drm_dirty_info_enum_list[i].type,
 847                                       drm_dirty_info_enum_list[i].name);
 848         dev->mode_config.dirty_info_property = dirty_info;
 849
 850         return 0;
 851 }
 852 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
 853
 854 /**
 855  * drm_mode_config_init - initialize DRM mode_configuration structure
 856  * @dev: DRM device
 857  *
 858  * LOCKING:
 859  * None, should happen single threaded at init time.
 860  *
 861  * Initialize @dev's mode_config structure, used for tracking the graphics
 862  * configuration of @dev.
 863  */
 864 void drm_mode_config_init(struct drm_device *dev)
 865 {
 866         mutex_init(&dev->mode_config.mutex);
 867         mutex_init(&dev->mode_config.idr_mutex);
 868         INIT_LIST_HEAD(&dev->mode_config.fb_list);
 869         INIT_LIST_HEAD(&dev->mode_config.crtc_list);
 870         INIT_LIST_HEAD(&dev->mode_config.connector_list);
 871         INIT_LIST_HEAD(&dev->mode_config.encoder_list);
 872         INIT_LIST_HEAD(&dev->mode_config.property_list);
 873         INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
 874         idr_init(&dev->mode_config.crtc_idr);
 875
 876         mutex_lock(&dev->mode_config.mutex);
 877         drm_mode_create_standard_connector_properties(dev);
 878         mutex_unlock(&dev->mode_config.mutex);
 879
 880         /* Just to be sure */
 881         dev->mode_config.num_fb = 0;
 882         dev->mode_config.num_connector = 0;
 883         dev->mode_config.num_crtc = 0;
 884         dev->mode_config.num_encoder = 0;
 885 }
 886 EXPORT_SYMBOL(drm_mode_config_init);
 887
 888 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
 889 {
 890         uint32_t total_objects = 0;
 891
 892         total_objects += dev->mode_config.num_crtc;
 893         total_objects += dev->mode_config.num_connector;
 894         total_objects += dev->mode_config.num_encoder;
 895
 896         group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
 897         if (!group->id_list)
 898                 return -ENOMEM;
 899
 900         group->num_crtcs = 0;
 901         group->num_connectors = 0;
 902         group->num_encoders = 0;
 903         return 0;
 904 }
 905
 906 int drm_mode_group_init_legacy_group(struct drm_device *dev,
 907                                      struct drm_mode_group *group)
 908 {
 909         struct drm_crtc *crtc;
 910         struct drm_encoder *encoder;
 911         struct drm_connector *connector;
 912         int ret;
 913
 914         if ((ret = drm_mode_group_init(dev, group)))
 915                 return ret;
 916
 917         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 918                 group->id_list[group->num_crtcs++] = crtc->base.id;
 919
 920         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
 921                 group->id_list[group->num_crtcs + group->num_encoders++] =
 922                 encoder->base.id;
 923
 924         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 925                 group->id_list[group->num_crtcs + group->num_encoders +
 926                                group->num_connectors++] = connector->base.id;
 927
 928         return 0;
 929 }
 930
 931 /**
 932  * drm_mode_config_cleanup - free up DRM mode_config info
 933  * @dev: DRM device
 934  *
 935  * LOCKING:
 936  * Caller must hold mode config lock.
 937  *
 938  * Free up all the connectors and CRTCs associated with this DRM device, then
 939  * free up the framebuffers and associated buffer objects.
 940  *
 941  * FIXME: cleanup any dangling user buffer objects too
 942  */
 943 void drm_mode_config_cleanup(struct drm_device *dev)
 944 {
 945         struct drm_connector *connector, *ot;
 946         struct drm_crtc *crtc, *ct;
 947         struct drm_encoder *encoder, *enct;
 948         struct drm_framebuffer *fb, *fbt;
 949         struct drm_property *property, *pt;
 950
 951         list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
 952                                  head) {
 953                 encoder->funcs->destroy(encoder);
 954         }
 955
 956         list_for_each_entry_safe(connector, ot,
 957                                  &dev->mode_config.connector_list, head) {
 958                 connector->funcs->destroy(connector);
 959         }
 960
 961         list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
 962                                  head) {
 963                 drm_property_destroy(dev, property);
 964         }
 965
 966         list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
 967                 fb->funcs->destroy(fb);
 968         }
 969
 970         list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
 971                 crtc->funcs->destroy(crtc);
 972         }
 973
 974 }
 975 EXPORT_SYMBOL(drm_mode_config_cleanup);
 976
 977 /**
 978  * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
 979  * @out: drm_mode_modeinfo struct to return to the user
 980  * @in: drm_display_mode to use
 981  *
 982  * LOCKING:
 983  * None.
 984  *
 985  * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
 986  * the user.
 987  */
 988 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
 989                                struct drm_display_mode *in)
 990 {
 991         out->clock = in->clock;
 992         out->hdisplay = in->hdisplay;
 993         out->hsync_start = in->hsync_start;
 994         out->hsync_end = in->hsync_end;
 995         out->htotal = in->htotal;
 996         out->hskew = in->hskew;
 997         out->vdisplay = in->vdisplay;
 998         out->vsync_start = in->vsync_start;
 999         out->vsync_end = in->vsync_end;
1000         out->vtotal = in->vtotal;
1001         out->vscan = in->vscan;
1002         out->vrefresh = in->vrefresh;
1003         out->flags = in->flags;
1004         out->type = in->type;
1005         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1006         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1007 }
1008
1009 /**
1010  * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1011  * @out: drm_display_mode to return to the user
1012  * @in: drm_mode_modeinfo to use
1013  *
1014  * LOCKING:
1015  * None.
1016  *
1017  * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1018  * the caller.
1019  */
1020 void drm_crtc_convert_umode(struct drm_display_mode *out,
1021                             struct drm_mode_modeinfo *in)
1022 {
1023         out->clock = in->clock;
1024         out->hdisplay = in->hdisplay;
1025         out->hsync_start = in->hsync_start;
1026         out->hsync_end = in->hsync_end;
1027         out->htotal = in->htotal;
1028         out->hskew = in->hskew;
1029         out->vdisplay = in->vdisplay;
1030         out->vsync_start = in->vsync_start;
1031         out->vsync_end = in->vsync_end;
1032         out->vtotal = in->vtotal;
1033         out->vscan = in->vscan;
1034         out->vrefresh = in->vrefresh;
1035         out->flags = in->flags;
1036         out->type = in->type;
1037         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1038         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1039 }
1040
1041 /**
1042  * drm_mode_getresources - get graphics configuration
1043  * @inode: inode from the ioctl
1044  * @filp: file * from the ioctl
1045  * @cmd: cmd from ioctl
1046  * @arg: arg from ioctl
1047  *
1048  * LOCKING:
1049  * Takes mode config lock.
1050  *
1051  * Construct a set of configuration description structures and return
1052  * them to the user, including CRTC, connector and framebuffer configuration.
1053  *
1054  * Called by the user via ioctl.
1055  *
1056  * RETURNS:
1057  * Zero on success, errno on failure.
1058  */
1059 int drm_mode_getresources(struct drm_device *dev, void *data,
1060                           struct drm_file *file_priv)
1061 {
1062         struct drm_mode_card_res *card_res = data;
1063         struct list_head *lh;
1064         struct drm_framebuffer *fb;
1065         struct drm_connector *connector;
1066         struct drm_crtc *crtc;
1067         struct drm_encoder *encoder;
1068         int ret = 0;
1069         int connector_count = 0;
1070         int crtc_count = 0;
1071         int fb_count = 0;
1072         int encoder_count = 0;
1073         int copied = 0, i;
1074         uint32_t __user *fb_id;
1075         uint32_t __user *crtc_id;
1076         uint32_t __user *connector_id;
1077         uint32_t __user *encoder_id;
1078         struct drm_mode_group *mode_group;
1079
1080         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1081                 return -EINVAL;
1082
1083         mutex_lock(&dev->mode_config.mutex);
1084
1085         /*
1086          * For the non-control nodes we need to limit the list of resources
1087          * by IDs in the group list for this node
1088          */
1089         list_for_each(lh, &file_priv->fbs)
1090                 fb_count++;
1091
1092         mode_group = &file_priv->master->minor->mode_group;
1093         if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1094
1095                 list_for_each(lh, &dev->mode_config.crtc_list)
1096                         crtc_count++;
1097
1098                 list_for_each(lh, &dev->mode_config.connector_list)
1099                         connector_count++;
1100
1101                 list_for_each(lh, &dev->mode_config.encoder_list)
1102                         encoder_count++;
1103         } else {
1104
1105                 crtc_count = mode_group->num_crtcs;
1106                 connector_count = mode_group->num_connectors;
1107                 encoder_count = mode_group->num_encoders;
1108         }
1109
1110         card_res->max_height = dev->mode_config.max_height;
1111         card_res->min_height = dev->mode_config.min_height;
1112         card_res->max_width = dev->mode_config.max_width;
1113         card_res->min_width = dev->mode_config.min_width;
1114
1115         /* handle this in 4 parts */
1116         /* FBs */
1117         if (card_res->count_fbs >= fb_count) {
1118                 copied = 0;
1119                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1120                 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1121                         if (put_user(fb->base.id, fb_id + copied)) {
1122                                 ret = -EFAULT;
1123                                 goto out;
1124                         }
1125                         copied++;
1126                 }
1127         }
1128         card_res->count_fbs = fb_count;
1129
1130         /* CRTCs */
1131         if (card_res->count_crtcs >= crtc_count) {
1132                 copied = 0;
1133                 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1134                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1135                         list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1136                                             head) {
1137                                 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1138                                 if (put_user(crtc->base.id, crtc_id + copied)) {
1139                                         ret = -EFAULT;
1140                                         goto out;
1141                                 }
1142                                 copied++;
1143                         }
1144                 } else {
1145                         for (i = 0; i < mode_group->num_crtcs; i++) {
1146                                 if (put_user(mode_group->id_list[i],
1147                                              crtc_id + copied)) {
1148                                         ret = -EFAULT;
1149                                         goto out;
1150                                 }
1151                                 copied++;
1152                         }
1153                 }
1154         }
1155         card_res->count_crtcs = crtc_count;
1156
1157         /* Encoders */
1158         if (card_res->count_encoders >= encoder_count) {
1159                 copied = 0;
1160                 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1161                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1162                         list_for_each_entry(encoder,
1163                                             &dev->mode_config.encoder_list,
1164                                             head) {
1165                                 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1166                                                 drm_get_encoder_name(encoder));
1167                                 if (put_user(encoder->base.id, encoder_id +
1168                                              copied)) {
1169                                         ret = -EFAULT;
1170                                         goto out;
1171                                 }
1172                                 copied++;
1173                         }
1174                 } else {
1175                         for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1176                                 if (put_user(mode_group->id_list[i],
1177                                              encoder_id + copied)) {
1178                                         ret = -EFAULT;
1179                                         goto out;
1180                                 }
1181                                 copied++;
1182                         }
1183
1184                 }
1185         }
1186         card_res->count_encoders = encoder_count;
1187
1188         /* Connectors */
1189         if (card_res->count_connectors >= connector_count) {
1190                 copied = 0;
1191                 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1192                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1193                         list_for_each_entry(connector,
1194                                             &dev->mode_config.connector_list,
1195                                             head) {
1196                                 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1197                                         connector->base.id,
1198                                         drm_get_connector_name(connector));
1199                                 if (put_user(connector->base.id,
1200                                              connector_id + copied)) {
1201                                         ret = -EFAULT;
1202                                         goto out;
1203                                 }
1204                                 copied++;
1205                         }
1206                 } else {
1207                         int start = mode_group->num_crtcs +
1208                                 mode_group->num_encoders;
1209                         for (i = start; i < start + mode_group->num_connectors; i++) {
1210                                 if (put_user(mode_group->id_list[i],
1211                                              connector_id + copied)) {
1212                                         ret = -EFAULT;
1213                                         goto out;
1214                                 }
1215                                 copied++;
1216                         }
1217                 }
1218         }
1219         card_res->count_connectors = connector_count;
1220
1221         DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1222                   card_res->count_connectors, card_res->count_encoders);
1223
1224 out:
1225         mutex_unlock(&dev->mode_config.mutex);
1226         return ret;
1227 }
1228
1229 /**
1230  * drm_mode_getcrtc - get CRTC configuration
1231  * @inode: inode from the ioctl
1232  * @filp: file * from the ioctl
1233  * @cmd: cmd from ioctl
1234  * @arg: arg from ioctl
1235  *
1236  * LOCKING:
1237  * Caller? (FIXME)
1238  *
1239  * Construct a CRTC configuration structure to return to the user.
1240  *
1241  * Called by the user via ioctl.
1242  *
1243  * RETURNS:
1244  * Zero on success, errno on failure.
1245  */
1246 int drm_mode_getcrtc(struct drm_device *dev,
1247                      void *data, struct drm_file *file_priv)
1248 {
1249         struct drm_mode_crtc *crtc_resp = data;
1250         struct drm_crtc *crtc;
1251         struct drm_mode_object *obj;
1252         int ret = 0;
1253
1254         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1255                 return -EINVAL;
1256
1257         mutex_lock(&dev->mode_config.mutex);
1258
1259         obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1260                                    DRM_MODE_OBJECT_CRTC);
1261         if (!obj) {
1262                 ret = -EINVAL;
1263                 goto out;
1264         }
1265         crtc = obj_to_crtc(obj);
1266
1267         crtc_resp->x = crtc->x;
1268         crtc_resp->y = crtc->y;
1269         crtc_resp->gamma_size = crtc->gamma_size;
1270         if (crtc->fb)
1271                 crtc_resp->fb_id = crtc->fb->base.id;
1272         else
1273                 crtc_resp->fb_id = 0;
1274
1275         if (crtc->enabled) {
1276
1277                 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1278                 crtc_resp->mode_valid = 1;
1279
1280         } else {
1281                 crtc_resp->mode_valid = 0;
1282         }
1283
1284 out:
1285         mutex_unlock(&dev->mode_config.mutex);
1286         return ret;
1287 }
1288
1289 /**
1290  * drm_mode_getconnector - get connector configuration
1291  * @inode: inode from the ioctl
1292  * @filp: file * from the ioctl
1293  * @cmd: cmd from ioctl
1294  * @arg: arg from ioctl
1295  *
1296  * LOCKING:
1297  * Caller? (FIXME)
1298  *
1299  * Construct a connector configuration structure to return to the user.
1300  *
1301  * Called by the user via ioctl.
1302  *
1303  * RETURNS:
1304  * Zero on success, errno on failure.
1305  */
1306 int drm_mode_getconnector(struct drm_device *dev, void *data,
1307                           struct drm_file *file_priv)
1308 {
1309         struct drm_mode_get_connector *out_resp = data;
1310         struct drm_mode_object *obj;
1311         struct drm_connector *connector;
1312         struct drm_display_mode *mode;
1313         int mode_count = 0;
1314         int props_count = 0;
1315         int encoders_count = 0;
1316         int ret = 0;
1317         int copied = 0;
1318         int i;
1319         struct drm_mode_modeinfo u_mode;
1320         struct drm_mode_modeinfo __user *mode_ptr;
1321         uint32_t __user *prop_ptr;
1322         uint64_t __user *prop_values;
1323         uint32_t __user *encoder_ptr;
1324
1325         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1326                 return -EINVAL;
1327
1328         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1329
1330         DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1331
1332         mutex_lock(&dev->mode_config.mutex);
1333
1334         obj = drm_mode_object_find(dev, out_resp->connector_id,
1335                                    DRM_MODE_OBJECT_CONNECTOR);
1336         if (!obj) {
1337                 ret = -EINVAL;
1338                 goto out;
1339         }
1340         connector = obj_to_connector(obj);
1341
1342         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1343                 if (connector->property_ids[i] != 0) {
1344                         props_count++;
1345                 }
1346         }
1347
1348         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1349                 if (connector->encoder_ids[i] != 0) {
1350                         encoders_count++;
1351                 }
1352         }
1353
1354         if (out_resp->count_modes == 0) {
1355                 connector->funcs->fill_modes(connector,
1356                                              dev->mode_config.max_width,
1357                                              dev->mode_config.max_height);
1358         }
1359
1360         /* delayed so we get modes regardless of pre-fill_modes state */
1361         list_for_each_entry(mode, &connector->modes, head)
1362                 mode_count++;
1363
1364         out_resp->connector_id = connector->base.id;
1365         out_resp->connector_type = connector->connector_type;
1366         out_resp->connector_type_id = connector->connector_type_id;
1367         out_resp->mm_width = connector->display_info.width_mm;
1368         out_resp->mm_height = connector->display_info.height_mm;
1369         out_resp->subpixel = connector->display_info.subpixel_order;
1370         out_resp->connection = connector->status;
1371         if (connector->encoder)
1372                 out_resp->encoder_id = connector->encoder->base.id;
1373         else
1374                 out_resp->encoder_id = 0;
1375
1376         /*
1377          * This ioctl is called twice, once to determine how much space is
1378          * needed, and the 2nd time to fill it.
1379          */
1380         if ((out_resp->count_modes >= mode_count) && mode_count) {
1381                 copied = 0;
1382                 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1383                 list_for_each_entry(mode, &connector->modes, head) {
1384                         drm_crtc_convert_to_umode(&u_mode, mode);
1385                         if (copy_to_user(mode_ptr + copied,
1386                                          &u_mode, sizeof(u_mode))) {
1387                                 ret = -EFAULT;
1388                                 goto out;
1389                         }
1390                         copied++;
1391                 }
1392         }
1393         out_resp->count_modes = mode_count;
1394
1395         if ((out_resp->count_props >= props_count) && props_count) {
1396                 copied = 0;
1397                 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1398                 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1399                 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1400                         if (connector->property_ids[i] != 0) {
1401                                 if (put_user(connector->property_ids[i],
1402                                              prop_ptr + copied)) {
1403                                         ret = -EFAULT;
1404                                         goto out;
1405                                 }
1406
1407                                 if (put_user(connector->property_values[i],
1408                                              prop_values + copied)) {
1409                                         ret = -EFAULT;
1410                                         goto out;
1411                                 }
1412                                 copied++;
1413                         }
1414                 }
1415         }
1416         out_resp->count_props = props_count;
1417
1418         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1419                 copied = 0;
1420                 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1421                 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1422                         if (connector->encoder_ids[i] != 0) {
1423                                 if (put_user(connector->encoder_ids[i],
1424                                              encoder_ptr + copied)) {
1425                                         ret = -EFAULT;
1426                                         goto out;
1427                                 }
1428                                 copied++;
1429                         }
1430                 }
1431         }
1432         out_resp->count_encoders = encoders_count;
1433
1434 out:
1435         mutex_unlock(&dev->mode_config.mutex);
1436         return ret;
1437 }
1438
1439 int drm_mode_getencoder(struct drm_device *dev, void *data,
1440                         struct drm_file *file_priv)
1441 {
1442         struct drm_mode_get_encoder *enc_resp = data;
1443         struct drm_mode_object *obj;
1444         struct drm_encoder *encoder;
1445         int ret = 0;
1446
1447         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1448                 return -EINVAL;
1449
1450         mutex_lock(&dev->mode_config.mutex);
1451         obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1452                                    DRM_MODE_OBJECT_ENCODER);
1453         if (!obj) {
1454                 ret = -EINVAL;
1455                 goto out;
1456         }
1457         encoder = obj_to_encoder(obj);
1458
1459         if (encoder->crtc)
1460                 enc_resp->crtc_id = encoder->crtc->base.id;
1461         else
1462                 enc_resp->crtc_id = 0;
1463         enc_resp->encoder_type = encoder->encoder_type;
1464         enc_resp->encoder_id = encoder->base.id;
1465         enc_resp->possible_crtcs = encoder->possible_crtcs;
1466         enc_resp->possible_clones = encoder->possible_clones;
1467
1468 out:
1469         mutex_unlock(&dev->mode_config.mutex);
1470         return ret;
1471 }
1472
1473 /**
1474  * drm_mode_setcrtc - set CRTC configuration
1475  * @inode: inode from the ioctl
1476  * @filp: file * from the ioctl
1477  * @cmd: cmd from ioctl
1478  * @arg: arg from ioctl
1479  *
1480  * LOCKING:
1481  * Caller? (FIXME)
1482  *
1483  * Build a new CRTC configuration based on user request.
1484  *
1485  * Called by the user via ioctl.
1486  *
1487  * RETURNS:
1488  * Zero on success, errno on failure.
1489  */
1490 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1491                      struct drm_file *file_priv)
1492 {
1493         struct drm_mode_config *config = &dev->mode_config;
1494         struct drm_mode_crtc *crtc_req = data;
1495         struct drm_mode_object *obj;
1496         struct drm_crtc *crtc, *crtcfb;
1497         struct drm_connector **connector_set = NULL, *connector;
1498         struct drm_framebuffer *fb = NULL;
1499         struct drm_display_mode *mode = NULL;
1500         struct drm_mode_set set;
1501         uint32_t __user *set_connectors_ptr;
1502         int ret = 0;
1503         int i;
1504
1505         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1506                 return -EINVAL;
1507
1508         mutex_lock(&dev->mode_config.mutex);
1509         obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1510                                    DRM_MODE_OBJECT_CRTC);
1511         if (!obj) {
1512                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1513                 ret = -EINVAL;
1514                 goto out;
1515         }
1516         crtc = obj_to_crtc(obj);
1517         DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1518
1519         if (crtc_req->mode_valid) {
1520                 /* If we have a mode we need a framebuffer. */
1521                 /* If we pass -1, set the mode with the currently bound fb */
1522                 if (crtc_req->fb_id == -1) {
1523                         list_for_each_entry(crtcfb,
1524                                             &dev->mode_config.crtc_list, head) {
1525                                 if (crtcfb == crtc) {
1526                                         DRM_DEBUG_KMS("Using current fb for "
1527                                                         "setmode\n");
1528                                         fb = crtc->fb;
1529                                 }
1530                         }
1531                 } else {
1532                         obj = drm_mode_object_find(dev, crtc_req->fb_id,
1533                                                    DRM_MODE_OBJECT_FB);
1534                         if (!obj) {
1535                                 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1536                                                 crtc_req->fb_id);
1537                                 ret = -EINVAL;
1538                                 goto out;
1539                         }
1540                         fb = obj_to_fb(obj);
1541                 }
1542
1543                 mode = drm_mode_create(dev);
1544                 drm_crtc_convert_umode(mode, &crtc_req->mode);
1545                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1546         }
1547
1548         if (crtc_req->count_connectors == 0 && mode) {
1549                 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1550                 ret = -EINVAL;
1551                 goto out;
1552         }
1553
1554         if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1555                 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1556                           crtc_req->count_connectors);
1557                 ret = -EINVAL;
1558                 goto out;
1559         }
1560
1561         if (crtc_req->count_connectors > 0) {
1562                 u32 out_id;
1563
1564                 /* Avoid unbounded kernel memory allocation */
1565                 if (crtc_req->count_connectors > config->num_connector) {
1566                         ret = -EINVAL;
1567                         goto out;
1568                 }
1569
1570                 connector_set = kmalloc(crtc_req->count_connectors *
1571                                         sizeof(struct drm_connector *),
1572                                         GFP_KERNEL);
1573                 if (!connector_set) {
1574                         ret = -ENOMEM;
1575                         goto out;
1576                 }
1577
1578                 for (i = 0; i < crtc_req->count_connectors; i++) {
1579                         set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1580                         if (get_user(out_id, &set_connectors_ptr[i])) {
1581                                 ret = -EFAULT;
1582                                 goto out;
1583                         }
1584
1585                         obj = drm_mode_object_find(dev, out_id,
1586                                                    DRM_MODE_OBJECT_CONNECTOR);
1587                         if (!obj) {
1588                                 DRM_DEBUG_KMS("Connector id %d unknown\n",
1589                                                 out_id);
1590                                 ret = -EINVAL;
1591                                 goto out;
1592                         }
1593                         connector = obj_to_connector(obj);
1594                         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1595                                         connector->base.id,
1596                                         drm_get_connector_name(connector));
1597
1598                         connector_set[i] = connector;
1599                 }
1600         }
1601
1602         set.crtc = crtc;
1603         set.x = crtc_req->x;
1604         set.y = crtc_req->y;
1605         set.mode = mode;
1606         set.connectors = connector_set;
1607         set.num_connectors = crtc_req->count_connectors;
1608         set.fb = fb;
1609         ret = crtc->funcs->set_config(&set);
1610
1611 out:
1612         kfree(connector_set);
1613         mutex_unlock(&dev->mode_config.mutex);
1614         return ret;
1615 }
1616
1617 int drm_mode_cursor_ioctl(struct drm_device *dev,
1618                         void *data, struct drm_file *file_priv)
1619 {
1620         struct drm_mode_cursor *req = data;
1621         struct drm_mode_object *obj;
1622         struct drm_crtc *crtc;
1623         int ret = 0;
1624
1625         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1626                 return -EINVAL;
1627
1628         if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
1629                 return -EINVAL;
1630
1631         mutex_lock(&dev->mode_config.mutex);
1632         obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1633         if (!obj) {
1634                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1635                 ret = -EINVAL;
1636                 goto out;
1637         }
1638         crtc = obj_to_crtc(obj);
1639
1640         if (req->flags & DRM_MODE_CURSOR_BO) {
1641                 if (!crtc->funcs->cursor_set) {
1642                         ret = -ENXIO;
1643                         goto out;
1644                 }
1645                 /* Turns off the cursor if handle is 0 */
1646                 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1647                                               req->width, req->height);
1648         }
1649
1650         if (req->flags & DRM_MODE_CURSOR_MOVE) {
1651                 if (crtc->funcs->cursor_move) {
1652                         ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1653                 } else {
1654                         ret = -EFAULT;
1655                         goto out;
1656                 }
1657         }
1658 out:
1659         mutex_unlock(&dev->mode_config.mutex);
1660         return ret;
1661 }
1662
1663 /**
1664  * drm_mode_addfb - add an FB to the graphics configuration
1665  * @inode: inode from the ioctl
1666  * @filp: file * from the ioctl
1667  * @cmd: cmd from ioctl
1668  * @arg: arg from ioctl
1669  *
1670  * LOCKING:
1671  * Takes mode config lock.
1672  *
1673  * Add a new FB to the specified CRTC, given a user request.
1674  *
1675  * Called by the user via ioctl.
1676  *
1677  * RETURNS:
1678  * Zero on success, errno on failure.
1679  */
1680 int drm_mode_addfb(struct drm_device *dev,
1681                    void *data, struct drm_file *file_priv)
1682 {
1683         struct drm_mode_fb_cmd *r = data;
1684         struct drm_mode_config *config = &dev->mode_config;
1685         struct drm_framebuffer *fb;
1686         int ret = 0;
1687
1688         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1689                 return -EINVAL;
1690
1691         if ((config->min_width > r->width) || (r->width > config->max_width))
1692                 return -EINVAL;
1693
1694         if ((config->min_height > r->height) || (r->height > config->max_height))
1695                 return -EINVAL;
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                 ret = -EINVAL;
1753                 goto out;
1754         }
1755         fb = obj_to_fb(obj);
1756
1757         list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1758                 if (fb == fbl)
1759                         found = 1;
1760
1761         if (!found) {
1762                 ret = -EINVAL;
1763                 goto out;
1764         }
1765
1766         /* TODO release all crtc connected to the framebuffer */
1767         /* TODO unhock the destructor from the buffer object */
1768
1769         list_del(&fb->filp_head);
1770         fb->funcs->destroy(fb);
1771
1772 out:
1773         mutex_unlock(&dev->mode_config.mutex);
1774         return ret;
1775 }
1776
1777 /**
1778  * drm_mode_getfb - get FB info
1779  * @inode: inode from the ioctl
1780  * @filp: file * from the ioctl
1781  * @cmd: cmd from ioctl
1782  * @arg: arg from ioctl
1783  *
1784  * LOCKING:
1785  * Caller? (FIXME)
1786  *
1787  * Lookup the FB given its ID and return info about it.
1788  *
1789  * Called by the user via ioctl.
1790  *
1791  * RETURNS:
1792  * Zero on success, errno on failure.
1793  */
1794 int drm_mode_getfb(struct drm_device *dev,
1795                    void *data, struct drm_file *file_priv)
1796 {
1797         struct drm_mode_fb_cmd *r = data;
1798         struct drm_mode_object *obj;
1799         struct drm_framebuffer *fb;
1800         int ret = 0;
1801
1802         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1803                 return -EINVAL;
1804
1805         mutex_lock(&dev->mode_config.mutex);
1806         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1807         if (!obj) {
1808                 ret = -EINVAL;
1809                 goto out;
1810         }
1811         fb = obj_to_fb(obj);
1812
1813         r->height = fb->height;
1814         r->width = fb->width;
1815         r->depth = fb->depth;
1816         r->bpp = fb->bits_per_pixel;
1817         r->pitch = fb->pitch;
1818         if (file_priv->is_master || capable(CAP_SYS_ADMIN)) {
1819                 ret = fb->funcs->create_handle(fb, file_priv, &r->handle);
1820         } else {
1821                 /* GET_FB() is an unprivileged ioctl so we must not
1822                  * return a buffer-handle to non-master processes! For
1823                  * backwards-compatibility reasons, we cannot make
1824                  * GET_FB() privileged, so just return an invalid handle
1825                  * for non-masters. */
1826                 r->handle = 0;
1827                 ret = 0;
1828         }
1829
1830 out:
1831         mutex_unlock(&dev->mode_config.mutex);
1832         return ret;
1833 }
1834
1835 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1836                            void *data, struct drm_file *file_priv)
1837 {
1838         struct drm_clip_rect __user *clips_ptr;
1839         struct drm_clip_rect *clips = NULL;
1840         struct drm_mode_fb_dirty_cmd *r = data;
1841         struct drm_mode_object *obj;
1842         struct drm_framebuffer *fb;
1843         unsigned flags;
1844         int num_clips;
1845         int ret = 0;
1846
1847         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1848                 return -EINVAL;
1849
1850         mutex_lock(&dev->mode_config.mutex);
1851         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1852         if (!obj) {
1853                 ret = -EINVAL;
1854                 goto out_err1;
1855         }
1856         fb = obj_to_fb(obj);
1857
1858         num_clips = r->num_clips;
1859         clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1860
1861         if (!num_clips != !clips_ptr) {
1862                 ret = -EINVAL;
1863                 goto out_err1;
1864         }
1865
1866         flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1867
1868         /* If userspace annotates copy, clips must come in pairs */
1869         if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1870                 ret = -EINVAL;
1871                 goto out_err1;
1872         }
1873
1874         if (num_clips && clips_ptr) {
1875                 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
1876                         ret = -EINVAL;
1877                         goto out_err1;
1878                 }
1879                 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1880                 if (!clips) {
1881                         ret = -ENOMEM;
1882                         goto out_err1;
1883                 }
1884
1885                 ret = copy_from_user(clips, clips_ptr,
1886                                      num_clips * sizeof(*clips));
1887                 if (ret) {
1888                         ret = -EFAULT;
1889                         goto out_err2;
1890                 }
1891         }
1892
1893         if (fb->funcs->dirty) {
1894                 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
1895                                        clips, num_clips);
1896         } else {
1897                 ret = -ENOSYS;
1898                 goto out_err2;
1899         }
1900
1901 out_err2:
1902         kfree(clips);
1903 out_err1:
1904         mutex_unlock(&dev->mode_config.mutex);
1905         return ret;
1906 }
1907
1908
1909 /**
1910  * drm_fb_release - remove and free the FBs on this file
1911  * @filp: file * from the ioctl
1912  *
1913  * LOCKING:
1914  * Takes mode config lock.
1915  *
1916  * Destroy all the FBs associated with @filp.
1917  *
1918  * Called by the user via ioctl.
1919  *
1920  * RETURNS:
1921  * Zero on success, errno on failure.
1922  */
1923 void drm_fb_release(struct drm_file *priv)
1924 {
1925         struct drm_device *dev = priv->minor->dev;
1926         struct drm_framebuffer *fb, *tfb;
1927
1928         mutex_lock(&dev->mode_config.mutex);
1929         list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1930                 list_del(&fb->filp_head);
1931                 fb->funcs->destroy(fb);
1932         }
1933         mutex_unlock(&dev->mode_config.mutex);
1934 }
1935
1936 /**
1937  * drm_mode_attachmode - add a mode to the user mode list
1938  * @dev: DRM device
1939  * @connector: connector to add the mode to
1940  * @mode: mode to add
1941  *
1942  * Add @mode to @connector's user mode list.
1943  */
1944 static int drm_mode_attachmode(struct drm_device *dev,
1945                                struct drm_connector *connector,
1946                                struct drm_display_mode *mode)
1947 {
1948         int ret = 0;
1949
1950         list_add_tail(&mode->head, &connector->user_modes);
1951         return ret;
1952 }
1953
1954 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1955                              struct drm_display_mode *mode)
1956 {
1957         struct drm_connector *connector;
1958         int ret = 0;
1959         struct drm_display_mode *dup_mode;
1960         int need_dup = 0;
1961         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1962                 if (!connector->encoder)
1963                         break;
1964                 if (connector->encoder->crtc == crtc) {
1965                         if (need_dup)
1966                                 dup_mode = drm_mode_duplicate(dev, mode);
1967                         else
1968                                 dup_mode = mode;
1969                         ret = drm_mode_attachmode(dev, connector, dup_mode);
1970                         if (ret)
1971                                 return ret;
1972                         need_dup = 1;
1973                 }
1974         }
1975         return 0;
1976 }
1977 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1978
1979 static int drm_mode_detachmode(struct drm_device *dev,
1980                                struct drm_connector *connector,
1981                                struct drm_display_mode *mode)
1982 {
1983         int found = 0;
1984         int ret = 0;
1985         struct drm_display_mode *match_mode, *t;
1986
1987         list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1988                 if (drm_mode_equal(match_mode, mode)) {
1989                         list_del(&match_mode->head);
1990                         drm_mode_destroy(dev, match_mode);
1991                         found = 1;
1992                         break;
1993                 }
1994         }
1995
1996         if (!found)
1997                 ret = -EINVAL;
1998
1999         return ret;
2000 }
2001
2002 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2003 {
2004         struct drm_connector *connector;
2005
2006         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2007                 drm_mode_detachmode(dev, connector, mode);
2008         }
2009         return 0;
2010 }
2011 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2012
2013 /**
2014  * drm_fb_attachmode - Attach a user mode to an connector
2015  * @inode: inode from the ioctl
2016  * @filp: file * from the ioctl
2017  * @cmd: cmd from ioctl
2018  * @arg: arg from ioctl
2019  *
2020  * This attaches a user specified mode to an connector.
2021  * Called by the user via ioctl.
2022  *
2023  * RETURNS:
2024  * Zero on success, errno on failure.
2025  */
2026 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2027                               void *data, struct drm_file *file_priv)
2028 {
2029         struct drm_mode_mode_cmd *mode_cmd = data;
2030         struct drm_connector *connector;
2031         struct drm_display_mode *mode;
2032         struct drm_mode_object *obj;
2033         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2034         int ret = 0;
2035
2036         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2037                 return -EINVAL;
2038
2039         mutex_lock(&dev->mode_config.mutex);
2040
2041         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2042         if (!obj) {
2043                 ret = -EINVAL;
2044                 goto out;
2045         }
2046         connector = obj_to_connector(obj);
2047
2048         mode = drm_mode_create(dev);
2049         if (!mode) {
2050                 ret = -ENOMEM;
2051                 goto out;
2052         }
2053
2054         drm_crtc_convert_umode(mode, umode);
2055
2056         ret = drm_mode_attachmode(dev, connector, mode);
2057 out:
2058         mutex_unlock(&dev->mode_config.mutex);
2059         return ret;
2060 }
2061
2062
2063 /**
2064  * drm_fb_detachmode - Detach a user specified mode from an connector
2065  * @inode: inode from the ioctl
2066  * @filp: file * from the ioctl
2067  * @cmd: cmd from ioctl
2068  * @arg: arg from ioctl
2069  *
2070  * Called by the user via ioctl.
2071  *
2072  * RETURNS:
2073  * Zero on success, errno on failure.
2074  */
2075 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2076                               void *data, struct drm_file *file_priv)
2077 {
2078         struct drm_mode_object *obj;
2079         struct drm_mode_mode_cmd *mode_cmd = data;
2080         struct drm_connector *connector;
2081         struct drm_display_mode mode;
2082         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2083         int ret = 0;
2084
2085         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2086                 return -EINVAL;
2087
2088         mutex_lock(&dev->mode_config.mutex);
2089
2090         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2091         if (!obj) {
2092                 ret = -EINVAL;
2093                 goto out;
2094         }
2095         connector = obj_to_connector(obj);
2096
2097         drm_crtc_convert_umode(&mode, umode);
2098         ret = drm_mode_detachmode(dev, connector, &mode);
2099 out:
2100         mutex_unlock(&dev->mode_config.mutex);
2101         return ret;
2102 }
2103
2104 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2105                                          const char *name, int num_values)
2106 {
2107         struct drm_property *property = NULL;
2108
2109         property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2110         if (!property)
2111                 return NULL;
2112
2113         if (num_values) {
2114                 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2115                 if (!property->values)
2116                         goto fail;
2117         }
2118
2119         drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2120         property->flags = flags;
2121         property->num_values = num_values;
2122         INIT_LIST_HEAD(&property->enum_blob_list);
2123
2124         if (name) {
2125                 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2126                 property->name[DRM_PROP_NAME_LEN-1] = '\0';
2127         }
2128
2129         list_add_tail(&property->head, &dev->mode_config.property_list);
2130         return property;
2131 fail:
2132         kfree(property);
2133         return NULL;
2134 }
2135 EXPORT_SYMBOL(drm_property_create);
2136
2137 int drm_property_add_enum(struct drm_property *property, int index,
2138                           uint64_t value, const char *name)
2139 {
2140         struct drm_property_enum *prop_enum;
2141
2142         if (!(property->flags & DRM_MODE_PROP_ENUM))
2143                 return -EINVAL;
2144
2145         if (!list_empty(&property->enum_blob_list)) {
2146                 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2147                         if (prop_enum->value == value) {
2148                                 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2149                                 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2150                                 return 0;
2151                         }
2152                 }
2153         }
2154
2155         prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2156         if (!prop_enum)
2157                 return -ENOMEM;
2158
2159         strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2160         prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2161         prop_enum->value = value;
2162
2163         property->values[index] = value;
2164         list_add_tail(&prop_enum->head, &property->enum_blob_list);
2165         return 0;
2166 }
2167 EXPORT_SYMBOL(drm_property_add_enum);
2168
2169 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2170 {
2171         struct drm_property_enum *prop_enum, *pt;
2172
2173         list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2174                 list_del(&prop_enum->head);
2175                 kfree(prop_enum);
2176         }
2177
2178         if (property->num_values)
2179                 kfree(property->values);
2180         drm_mode_object_put(dev, &property->base);
2181         list_del(&property->head);
2182         kfree(property);
2183 }
2184 EXPORT_SYMBOL(drm_property_destroy);
2185
2186 int drm_connector_attach_property(struct drm_connector *connector,
2187                                struct drm_property *property, uint64_t init_val)
2188 {
2189         int i;
2190
2191         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2192                 if (connector->property_ids[i] == 0) {
2193                         connector->property_ids[i] = property->base.id;
2194                         connector->property_values[i] = init_val;
2195                         break;
2196                 }
2197         }
2198
2199         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2200                 return -EINVAL;
2201         return 0;
2202 }
2203 EXPORT_SYMBOL(drm_connector_attach_property);
2204
2205 int drm_connector_property_set_value(struct drm_connector *connector,
2206                                   struct drm_property *property, uint64_t value)
2207 {
2208         int i;
2209
2210         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2211                 if (connector->property_ids[i] == property->base.id) {
2212                         connector->property_values[i] = value;
2213                         break;
2214                 }
2215         }
2216
2217         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2218                 return -EINVAL;
2219         return 0;
2220 }
2221 EXPORT_SYMBOL(drm_connector_property_set_value);
2222
2223 int drm_connector_property_get_value(struct drm_connector *connector,
2224                                   struct drm_property *property, uint64_t *val)
2225 {
2226         int i;
2227
2228         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2229                 if (connector->property_ids[i] == property->base.id) {
2230                         *val = connector->property_values[i];
2231                         break;
2232                 }
2233         }
2234
2235         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2236                 return -EINVAL;
2237         return 0;
2238 }
2239 EXPORT_SYMBOL(drm_connector_property_get_value);
2240
2241 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2242                                void *data, struct drm_file *file_priv)
2243 {
2244         struct drm_mode_object *obj;
2245         struct drm_mode_get_property *out_resp = data;
2246         struct drm_property *property;
2247         int enum_count = 0;
2248         int blob_count = 0;
2249         int value_count = 0;
2250         int ret = 0, i;
2251         int copied;
2252         struct drm_property_enum *prop_enum;
2253         struct drm_mode_property_enum __user *enum_ptr;
2254         struct drm_property_blob *prop_blob;
2255         uint32_t *blob_id_ptr;
2256         uint64_t __user *values_ptr;
2257         uint32_t __user *blob_length_ptr;
2258
2259         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2260                 return -EINVAL;
2261
2262         mutex_lock(&dev->mode_config.mutex);
2263         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2264         if (!obj) {
2265                 ret = -EINVAL;
2266                 goto done;
2267         }
2268         property = obj_to_property(obj);
2269
2270         if (property->flags & DRM_MODE_PROP_ENUM) {
2271                 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2272                         enum_count++;
2273         } else if (property->flags & DRM_MODE_PROP_BLOB) {
2274                 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2275                         blob_count++;
2276         }
2277
2278         value_count = property->num_values;
2279
2280         strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2281         out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2282         out_resp->flags = property->flags;
2283
2284         if ((out_resp->count_values >= value_count) && value_count) {
2285                 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2286                 for (i = 0; i < value_count; i++) {
2287                         if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2288                                 ret = -EFAULT;
2289                                 goto done;
2290                         }
2291                 }
2292         }
2293         out_resp->count_values = value_count;
2294
2295         if (property->flags & DRM_MODE_PROP_ENUM) {
2296                 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2297                         copied = 0;
2298                         enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2299                         list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2300
2301                                 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2302                                         ret = -EFAULT;
2303                                         goto done;
2304                                 }
2305
2306                                 if (copy_to_user(&enum_ptr[copied].name,
2307                                                  &prop_enum->name, DRM_PROP_NAME_LEN)) {
2308                                         ret = -EFAULT;
2309                                         goto done;
2310                                 }
2311                                 copied++;
2312                         }
2313                 }
2314                 out_resp->count_enum_blobs = enum_count;
2315         }
2316
2317         if (property->flags & DRM_MODE_PROP_BLOB) {
2318                 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2319                         copied = 0;
2320                         blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2321                         blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2322
2323                         list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2324                                 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2325                                         ret = -EFAULT;
2326                                         goto done;
2327                                 }
2328
2329                                 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2330                                         ret = -EFAULT;
2331                                         goto done;
2332                                 }
2333
2334                                 copied++;
2335                         }
2336                 }
2337                 out_resp->count_enum_blobs = blob_count;
2338         }
2339 done:
2340         mutex_unlock(&dev->mode_config.mutex);
2341         return ret;
2342 }
2343
2344 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2345                                                           void *data)
2346 {
2347         struct drm_property_blob *blob;
2348
2349         if (!length || !data)
2350                 return NULL;
2351
2352         blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2353         if (!blob)
2354                 return NULL;
2355
2356         blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2357         blob->length = length;
2358
2359         memcpy(blob->data, data, length);
2360
2361         drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2362
2363         list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2364         return blob;
2365 }
2366
2367 static void drm_property_destroy_blob(struct drm_device *dev,
2368                                struct drm_property_blob *blob)
2369 {
2370         drm_mode_object_put(dev, &blob->base);
2371         list_del(&blob->head);
2372         kfree(blob);
2373 }
2374
2375 int drm_mode_getblob_ioctl(struct drm_device *dev,
2376                            void *data, struct drm_file *file_priv)
2377 {
2378         struct drm_mode_object *obj;
2379         struct drm_mode_get_blob *out_resp = data;
2380         struct drm_property_blob *blob;
2381         int ret = 0;
2382         void *blob_ptr;
2383
2384         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2385                 return -EINVAL;
2386
2387         mutex_lock(&dev->mode_config.mutex);
2388         obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2389         if (!obj) {
2390                 ret = -EINVAL;
2391                 goto done;
2392         }
2393         blob = obj_to_blob(obj);
2394
2395         if (out_resp->length == blob->length) {
2396                 blob_ptr = (void *)(unsigned long)out_resp->data;
2397                 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2398                         ret = -EFAULT;
2399                         goto done;
2400                 }
2401         }
2402         out_resp->length = blob->length;
2403
2404 done:
2405         mutex_unlock(&dev->mode_config.mutex);
2406         return ret;
2407 }
2408
2409 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2410                                             struct edid *edid)
2411 {
2412         struct drm_device *dev = connector->dev;
2413         int ret = 0, size;
2414
2415         if (connector->edid_blob_ptr)
2416                 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2417
2418         /* Delete edid, when there is none. */
2419         if (!edid) {
2420                 connector->edid_blob_ptr = NULL;
2421                 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2422                 return ret;
2423         }
2424
2425         size = EDID_LENGTH * (1 + edid->extensions);
2426         connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
2427                                                             size, edid);
2428
2429         ret = drm_connector_property_set_value(connector,
2430                                                dev->mode_config.edid_property,
2431                                                connector->edid_blob_ptr->base.id);
2432
2433         return ret;
2434 }
2435 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2436
2437 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2438                                        void *data, struct drm_file *file_priv)
2439 {
2440         struct drm_mode_connector_set_property *out_resp = data;
2441         struct drm_mode_object *obj;
2442         struct drm_property *property;
2443         struct drm_connector *connector;
2444         int ret = -EINVAL;
2445         int i;
2446
2447         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2448                 return -EINVAL;
2449
2450         mutex_lock(&dev->mode_config.mutex);
2451
2452         obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2453         if (!obj) {
2454                 goto out;
2455         }
2456         connector = obj_to_connector(obj);
2457
2458         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2459                 if (connector->property_ids[i] == out_resp->prop_id)
2460                         break;
2461         }
2462
2463         if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2464                 goto out;
2465         }
2466
2467         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2468         if (!obj) {
2469                 goto out;
2470         }
2471         property = obj_to_property(obj);
2472
2473         if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2474                 goto out;
2475
2476         if (property->flags & DRM_MODE_PROP_RANGE) {
2477                 if (out_resp->value < property->values[0])
2478                         goto out;
2479
2480                 if (out_resp->value > property->values[1])
2481                         goto out;
2482         } else {
2483                 int found = 0;
2484                 for (i = 0; i < property->num_values; i++) {
2485                         if (property->values[i] == out_resp->value) {
2486                                 found = 1;
2487                                 break;
2488                         }
2489                 }
2490                 if (!found) {
2491                         goto out;
2492                 }
2493         }
2494
2495         /* Do DPMS ourselves */
2496         if (property == connector->dev->mode_config.dpms_property) {
2497                 if (connector->funcs->dpms)
2498                         (*connector->funcs->dpms)(connector, (int) out_resp->value);
2499                 ret = 0;
2500         } else if (connector->funcs->set_property)
2501                 ret = connector->funcs->set_property(connector, property, out_resp->value);
2502
2503         /* store the property value if successful */
2504         if (!ret)
2505                 drm_connector_property_set_value(connector, property, out_resp->value);
2506 out:
2507         mutex_unlock(&dev->mode_config.mutex);
2508         return ret;
2509 }
2510
2511 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2512                                       struct drm_encoder *encoder)
2513 {
2514         int i;
2515
2516         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2517                 if (connector->encoder_ids[i] == 0) {
2518                         connector->encoder_ids[i] = encoder->base.id;
2519                         return 0;
2520                 }
2521         }
2522         return -ENOMEM;
2523 }
2524 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2525
2526 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2527                                     struct drm_encoder *encoder)
2528 {
2529         int i;
2530         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2531                 if (connector->encoder_ids[i] == encoder->base.id) {
2532                         connector->encoder_ids[i] = 0;
2533                         if (connector->encoder == encoder)
2534                                 connector->encoder = NULL;
2535                         break;
2536                 }
2537         }
2538 }
2539 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2540
2541 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2542                                   int gamma_size)
2543 {
2544         crtc->gamma_size = gamma_size;
2545
2546         crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2547         if (!crtc->gamma_store) {
2548                 crtc->gamma_size = 0;
2549                 return false;
2550         }
2551
2552         return true;
2553 }
2554 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2555
2556 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2557                              void *data, struct drm_file *file_priv)
2558 {
2559         struct drm_mode_crtc_lut *crtc_lut = data;
2560         struct drm_mode_object *obj;
2561         struct drm_crtc *crtc;
2562         void *r_base, *g_base, *b_base;
2563         int size;
2564         int ret = 0;
2565
2566         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2567                 return -EINVAL;
2568
2569         mutex_lock(&dev->mode_config.mutex);
2570         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2571         if (!obj) {
2572                 ret = -EINVAL;
2573                 goto out;
2574         }
2575         crtc = obj_to_crtc(obj);
2576
2577         /* memcpy into gamma store */
2578         if (crtc_lut->gamma_size != crtc->gamma_size) {
2579                 ret = -EINVAL;
2580                 goto out;
2581         }
2582
2583         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2584         r_base = crtc->gamma_store;
2585         if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2586                 ret = -EFAULT;
2587                 goto out;
2588         }
2589
2590         g_base = r_base + size;
2591         if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2592                 ret = -EFAULT;
2593                 goto out;
2594         }
2595
2596         b_base = g_base + size;
2597         if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2598                 ret = -EFAULT;
2599                 goto out;
2600         }
2601
2602         crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
2603
2604 out:
2605         mutex_unlock(&dev->mode_config.mutex);
2606         return ret;
2607
2608 }
2609
2610 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2611                              void *data, struct drm_file *file_priv)
2612 {
2613         struct drm_mode_crtc_lut *crtc_lut = data;
2614         struct drm_mode_object *obj;
2615         struct drm_crtc *crtc;
2616         void *r_base, *g_base, *b_base;
2617         int size;
2618         int ret = 0;
2619
2620         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2621                 return -EINVAL;
2622
2623         mutex_lock(&dev->mode_config.mutex);
2624         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2625         if (!obj) {
2626                 ret = -EINVAL;
2627                 goto out;
2628         }
2629         crtc = obj_to_crtc(obj);
2630
2631         /* memcpy into gamma store */
2632         if (crtc_lut->gamma_size != crtc->gamma_size) {
2633                 ret = -EINVAL;
2634                 goto out;
2635         }
2636
2637         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2638         r_base = crtc->gamma_store;
2639         if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2640                 ret = -EFAULT;
2641                 goto out;
2642         }
2643
2644         g_base = r_base + size;
2645         if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2646                 ret = -EFAULT;
2647                 goto out;
2648         }
2649
2650         b_base = g_base + size;
2651         if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2652                 ret = -EFAULT;
2653                 goto out;
2654         }
2655 out:
2656         mutex_unlock(&dev->mode_config.mutex);
2657         return ret;
2658 }
2659
2660 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2661                              void *data, struct drm_file *file_priv)
2662 {
2663         struct drm_mode_crtc_page_flip *page_flip = data;
2664         struct drm_mode_object *obj;
2665         struct drm_crtc *crtc;
2666         struct drm_framebuffer *fb;
2667         struct drm_pending_vblank_event *e = NULL;
2668         unsigned long flags;
2669         int ret = -EINVAL;
2670
2671         if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2672             page_flip->reserved != 0)
2673                 return -EINVAL;
2674
2675         mutex_lock(&dev->mode_config.mutex);
2676         obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2677         if (!obj)
2678                 goto out;
2679         crtc = obj_to_crtc(obj);
2680
2681         if (crtc->fb == NULL) {
2682                 /* The framebuffer is currently unbound, presumably
2683                  * due to a hotplug event, that userspace has not
2684                  * yet discovered.
2685                  */
2686                 ret = -EBUSY;
2687                 goto out;
2688         }
2689
2690         if (crtc->funcs->page_flip == NULL)
2691                 goto out;
2692
2693         obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2694         if (!obj)
2695                 goto out;
2696         fb = obj_to_fb(obj);
2697
2698         if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2699                 ret = -ENOMEM;
2700                 spin_lock_irqsave(&dev->event_lock, flags);
2701                 if (file_priv->event_space < sizeof e->event) {
2702                         spin_unlock_irqrestore(&dev->event_lock, flags);
2703                         goto out;
2704                 }
2705                 file_priv->event_space -= sizeof e->event;
2706                 spin_unlock_irqrestore(&dev->event_lock, flags);
2707
2708                 e = kzalloc(sizeof *e, GFP_KERNEL);
2709                 if (e == NULL) {
2710                         spin_lock_irqsave(&dev->event_lock, flags);
2711                         file_priv->event_space += sizeof e->event;
2712                         spin_unlock_irqrestore(&dev->event_lock, flags);
2713                         goto out;
2714                 }
2715
2716                 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
2717                 e->event.base.length = sizeof e->event;
2718                 e->event.user_data = page_flip->user_data;
2719                 e->base.event = &e->event.base;
2720                 e->base.file_priv = file_priv;
2721                 e->base.destroy =
2722                         (void (*) (struct drm_pending_event *)) kfree;
2723         }
2724
2725         ret = crtc->funcs->page_flip(crtc, fb, e);
2726         if (ret) {
2727                 spin_lock_irqsave(&dev->event_lock, flags);
2728                 file_priv->event_space += sizeof e->event;
2729                 spin_unlock_irqrestore(&dev->event_lock, flags);
2730                 kfree(e);
2731         }
2732
2733 out:
2734         mutex_unlock(&dev->mode_config.mutex);
2735         return ret;
2736 }
2737
2738 void drm_mode_config_reset(struct drm_device *dev)
2739 {
2740         struct drm_crtc *crtc;
2741         struct drm_encoder *encoder;
2742         struct drm_connector *connector;
2743
2744         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
2745                 if (crtc->funcs->reset)
2746                         crtc->funcs->reset(crtc);
2747
2748         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
2749                 if (encoder->funcs->reset)
2750                         encoder->funcs->reset(encoder);
2751
2752         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
2753                 if (connector->funcs->reset)
2754                         connector->funcs->reset(connector);
2755 }
2756 EXPORT_SYMBOL(drm_mode_config_reset);
2757
2758 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
2759                                void *data, struct drm_file *file_priv)
2760 {
2761         struct drm_mode_create_dumb *args = data;
2762
2763         if (!dev->driver->dumb_create)
2764                 return -ENOSYS;
2765         return dev->driver->dumb_create(file_priv, dev, args);
2766 }
2767
2768 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
2769                              void *data, struct drm_file *file_priv)
2770 {
2771         struct drm_mode_map_dumb *args = data;
2772
2773         /* call driver ioctl to get mmap offset */
2774         if (!dev->driver->dumb_map_offset)
2775                 return -ENOSYS;
2776
2777         return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
2778 }
2779
2780 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
2781                                 void *data, struct drm_file *file_priv)
2782 {
2783         struct drm_mode_destroy_dumb *args = data;
2784
2785         if (!dev->driver->dumb_destroy)
2786                 return -ENOSYS;
2787
2788         return dev->driver->dumb_destroy(file_priv, dev, args->handle);
2789 }