sys/dev/drm2/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 <sys/cdefs.h>
  33 #include <dev/drm2/drmP.h>
  34 #include <dev/drm2/drm_crtc.h>
  35 #include <dev/drm2/drm_edid.h>
  36 #include <dev/drm2/drm_fourcc.h>
  37
  38 static void drm_property_destroy_blob(struct drm_device *dev,
  39     struct drm_property_blob *blob);
  40
  41 /* Avoid boilerplate.  I'm tired of typing. */
  42 #define DRM_ENUM_NAME_FN(fnname, list)                          \
  43         char *fnname(int val)                                   \
  44         {                                                       \
  45                 int i;                                          \
  46                 for (i = 0; i < ARRAY_SIZE(list); i++) {        \
  47                         if (list[i].type == val)                \
  48                                 return list[i].name;            \
  49                 }                                               \
  50                 return "(unknown)";                             \
  51         }
  52
  53 /*
  54  * Global properties
  55  */
  56 static struct drm_prop_enum_list drm_dpms_enum_list[] =
  57 {       { DRM_MODE_DPMS_ON, "On" },
  58         { DRM_MODE_DPMS_STANDBY, "Standby" },
  59         { DRM_MODE_DPMS_SUSPEND, "Suspend" },
  60         { DRM_MODE_DPMS_OFF, "Off" }
  61 };
  62
  63 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
  64
  65 /*
  66  * Optional properties
  67  */
  68 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
  69 {
  70         { DRM_MODE_SCALE_NONE, "None" },
  71         { DRM_MODE_SCALE_FULLSCREEN, "Full" },
  72         { DRM_MODE_SCALE_CENTER, "Center" },
  73         { DRM_MODE_SCALE_ASPECT, "Full aspect" },
  74 };
  75
  76 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
  77 {
  78         { DRM_MODE_DITHERING_OFF, "Off" },
  79         { DRM_MODE_DITHERING_ON, "On" },
  80         { DRM_MODE_DITHERING_AUTO, "Automatic" },
  81 };
  82
  83 /*
  84  * Non-global properties, but "required" for certain connectors.
  85  */
  86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
  87 {
  88         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
  89         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  90         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
  91 };
  92
  93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
  94
  95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
  96 {
  97         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
  98         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  99         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
 100 };
 101
 102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
 103                  drm_dvi_i_subconnector_enum_list)
 104
 105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
 106 {
 107         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
 108         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 109         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 110         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 111         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 112 };
 113
 114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
 115
 116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
 117 {
 118         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 119         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 120         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 121         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 122         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 123 };
 124
 125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
 126                  drm_tv_subconnector_enum_list)
 127
 128 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
 129         { DRM_MODE_DIRTY_OFF,      "Off"      },
 130         { DRM_MODE_DIRTY_ON,       "On"       },
 131         { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
 132 };
 133
 134 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
 135                  drm_dirty_info_enum_list)
 136
 137 struct drm_conn_prop_enum_list {
 138         int type;
 139         char *name;
 140         int count;
 141 };
 142
 143 /*
 144  * Connector and encoder types.
 145  */
 146 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
 147 {       { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
 148         { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
 149         { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
 150         { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
 151         { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
 152         { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
 153         { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
 154         { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
 155         { DRM_MODE_CONNECTOR_Component, "Component", 0 },
 156         { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
 157         { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
 158         { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
 159         { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
 160         { DRM_MODE_CONNECTOR_TV, "TV", 0 },
 161         { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
 162         { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
 163 };
 164
 165 static struct drm_prop_enum_list drm_encoder_enum_list[] =
 166 {       { DRM_MODE_ENCODER_NONE, "None" },
 167         { DRM_MODE_ENCODER_DAC, "DAC" },
 168         { DRM_MODE_ENCODER_TMDS, "TMDS" },
 169         { DRM_MODE_ENCODER_LVDS, "LVDS" },
 170         { DRM_MODE_ENCODER_TVDAC, "TV" },
 171         { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
 172 };
 173
 174 char *drm_get_encoder_name(struct drm_encoder *encoder)
 175 {
 176         static char buf[32];
 177
 178         snprintf(buf, 32, "%s-%d",
 179                  drm_encoder_enum_list[encoder->encoder_type].name,
 180                  encoder->base.id);
 181         return buf;
 182 }
 183 EXPORT_SYMBOL(drm_get_encoder_name);
 184
 185 char *drm_get_connector_name(struct drm_connector *connector)
 186 {
 187         static char buf[32];
 188
 189         snprintf(buf, 32, "%s-%d",
 190                  drm_connector_enum_list[connector->connector_type].name,
 191                  connector->connector_type_id);
 192         return buf;
 193 }
 194 EXPORT_SYMBOL(drm_get_connector_name);
 195
 196 char *drm_get_connector_status_name(enum drm_connector_status status)
 197 {
 198         if (status == connector_status_connected)
 199                 return "connected";
 200         else if (status == connector_status_disconnected)
 201                 return "disconnected";
 202         else
 203                 return "unknown";
 204 }
 205
 206 /**
 207  * drm_mode_object_get - allocate a new identifier
 208  * @dev: DRM device
 209  * @ptr: object pointer, used to generate unique ID
 210  * @type: object type
 211  *
 212  * LOCKING:
 213  *
 214  * Create a unique identifier based on @ptr in @dev's identifier space.  Used
 215  * for tracking modes, CRTCs and connectors.
 216  *
 217  * RETURNS:
 218  * New unique (relative to other objects in @dev) integer identifier for the
 219  * object.
 220  */
 221 static int drm_mode_object_get(struct drm_device *dev,
 222                                struct drm_mode_object *obj, uint32_t obj_type)
 223 {
 224         int new_id = 0;
 225         int ret;
 226
 227         ret = drm_gem_name_create(&dev->mode_config.crtc_names, obj, &new_id);
 228         if (ret)
 229                 return ret;
 230
 231         obj->id = new_id;
 232         obj->type = obj_type;
 233         return 0;
 234 }
 235
 236 /**
 237  * drm_mode_object_put - free an identifer
 238  * @dev: DRM device
 239  * @id: ID to free
 240  *
 241  * LOCKING:
 242  * Caller must hold DRM mode_config lock.
 243  *
 244  * Free @id from @dev's unique identifier pool.
 245  */
 246 static void drm_mode_object_put(struct drm_device *dev,
 247                                 struct drm_mode_object *object)
 248 {
 249
 250         drm_gem_names_remove(&dev->mode_config.crtc_names, object->id);
 251 }
 252
 253 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
 254                 uint32_t id, uint32_t type)
 255 {
 256         struct drm_mode_object *obj = NULL;
 257
 258         obj = drm_gem_name_ref(&dev->mode_config.crtc_names, id, NULL);
 259         if (!obj || (obj->type != type) || (obj->id != id))
 260                 obj = NULL;
 261
 262         return obj;
 263 }
 264 EXPORT_SYMBOL(drm_mode_object_find);
 265
 266 /**
 267  * drm_framebuffer_init - initialize a framebuffer
 268  * @dev: DRM device
 269  *
 270  * LOCKING:
 271  * Caller must hold mode config lock.
 272  *
 273  * Allocates an ID for the framebuffer's parent mode object, sets its mode
 274  * functions & device file and adds it to the master fd list.
 275  *
 276  * RETURNS:
 277  * Zero on success, error code on failure.
 278  */
 279 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
 280                          const struct drm_framebuffer_funcs *funcs)
 281 {
 282         int ret;
 283
 284         refcount_init(&fb->refcount, 1);
 285
 286         ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
 287         if (ret)
 288                 return ret;
 289
 290         fb->dev = dev;
 291         fb->funcs = funcs;
 292         dev->mode_config.num_fb++;
 293         list_add(&fb->head, &dev->mode_config.fb_list);
 294
 295         return 0;
 296 }
 297 EXPORT_SYMBOL(drm_framebuffer_init);
 298
 299 static void drm_framebuffer_free(struct drm_framebuffer *fb)
 300 {
 301         fb->funcs->destroy(fb);
 302 }
 303
 304 /**
 305  * drm_framebuffer_unreference - unref a framebuffer
 306  *
 307  * LOCKING:
 308  * Caller must hold mode config lock.
 309  */
 310 void drm_framebuffer_unreference(struct drm_framebuffer *fb)
 311 {
 312         struct drm_device *dev = fb->dev;
 313         DRM_DEBUG("FB ID: %d\n", fb->base.id);
 314         if (!sx_xlocked(&dev->mode_config.mutex))
 315                 DRM_WARNING("%s: dev->mode_config.mutex not locked\n", __func__);
 316         if (refcount_release(&fb->refcount))
 317                 drm_framebuffer_free(fb);
 318 }
 319 EXPORT_SYMBOL(drm_framebuffer_unreference);
 320
 321 /**
 322  * drm_framebuffer_reference - incr the fb refcnt
 323  */
 324 void drm_framebuffer_reference(struct drm_framebuffer *fb)
 325 {
 326         DRM_DEBUG("FB ID: %d\n", fb->base.id);
 327         refcount_acquire(&fb->refcount);
 328 }
 329 EXPORT_SYMBOL(drm_framebuffer_reference);
 330
 331 /**
 332  * drm_framebuffer_cleanup - remove a framebuffer object
 333  * @fb: framebuffer to remove
 334  *
 335  * LOCKING:
 336  * Caller must hold mode config lock.
 337  *
 338  * Scans all the CRTCs in @dev's mode_config.  If they're using @fb, removes
 339  * it, setting it to NULL.
 340  */
 341 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
 342 {
 343         struct drm_device *dev = fb->dev;
 344         /*
 345          * This could be moved to drm_framebuffer_remove(), but for
 346          * debugging is nice to keep around the list of fb's that are
 347          * no longer associated w/ a drm_file but are not unreferenced
 348          * yet.  (i915 and omapdrm have debugfs files which will show
 349          * this.)
 350          */
 351         drm_mode_object_put(dev, &fb->base);
 352         list_del(&fb->head);
 353         dev->mode_config.num_fb--;
 354 }
 355 EXPORT_SYMBOL(drm_framebuffer_cleanup);
 356
 357 /**
 358  * drm_framebuffer_remove - remove and unreference a framebuffer object
 359  * @fb: framebuffer to remove
 360  *
 361  * LOCKING:
 362  * Caller must hold mode config lock.
 363  *
 364  * Scans all the CRTCs and planes in @dev's mode_config.  If they're
 365  * using @fb, removes it, setting it to NULL.
 366  */
 367 void drm_framebuffer_remove(struct drm_framebuffer *fb)
 368 {
 369         struct drm_device *dev = fb->dev;
 370         struct drm_crtc *crtc;
 371         struct drm_plane *plane;
 372         struct drm_mode_set set;
 373         int ret;
 374
 375         /* remove from any CRTC */
 376         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 377                 if (crtc->fb == fb) {
 378                         /* should turn off the crtc */
 379                         memset(&set, 0, sizeof(struct drm_mode_set));
 380                         set.crtc = crtc;
 381                         set.fb = NULL;
 382                         ret = crtc->funcs->set_config(&set);
 383                         if (ret)
 384                                 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
 385                 }
 386         }
 387
 388         list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
 389                 if (plane->fb == fb) {
 390                         /* should turn off the crtc */
 391                         ret = plane->funcs->disable_plane(plane);
 392                         if (ret)
 393                                 DRM_ERROR("failed to disable plane with busy fb\n");
 394                         /* disconnect the plane from the fb and crtc: */
 395                         plane->fb = NULL;
 396                         plane->crtc = NULL;
 397                 }
 398         }
 399
 400         list_del(&fb->filp_head);
 401
 402         drm_framebuffer_unreference(fb);
 403 }
 404 EXPORT_SYMBOL(drm_framebuffer_remove);
 405
 406 /**
 407  * drm_crtc_init - Initialise a new CRTC object
 408  * @dev: DRM device
 409  * @crtc: CRTC object to init
 410  * @funcs: callbacks for the new CRTC
 411  *
 412  * LOCKING:
 413  * Takes mode_config lock.
 414  *
 415  * Inits a new object created as base part of an driver crtc object.
 416  *
 417  * RETURNS:
 418  * Zero on success, error code on failure.
 419  */
 420 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
 421                    const struct drm_crtc_funcs *funcs)
 422 {
 423         int ret;
 424
 425         crtc->dev = dev;
 426         crtc->funcs = funcs;
 427         crtc->invert_dimensions = false;
 428
 429         sx_xlock(&dev->mode_config.mutex);
 430
 431         ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
 432         if (ret)
 433                 goto out;
 434
 435         crtc->base.properties = &crtc->properties;
 436
 437         list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
 438         dev->mode_config.num_crtc++;
 439
 440  out:
 441         sx_xunlock(&dev->mode_config.mutex);
 442
 443         return ret;
 444 }
 445 EXPORT_SYMBOL(drm_crtc_init);
 446
 447 /**
 448  * drm_crtc_cleanup - Cleans up the core crtc usage.
 449  * @crtc: CRTC to cleanup
 450  *
 451  * LOCKING:
 452  * Caller must hold mode config lock.
 453  *
 454  * Cleanup @crtc. Removes from drm modesetting space
 455  * does NOT free object, caller does that.
 456  */
 457 void drm_crtc_cleanup(struct drm_crtc *crtc)
 458 {
 459         struct drm_device *dev = crtc->dev;
 460
 461         free(crtc->gamma_store, DRM_MEM_KMS);
 462         crtc->gamma_store = NULL;
 463
 464         drm_mode_object_put(dev, &crtc->base);
 465         list_del(&crtc->head);
 466         dev->mode_config.num_crtc--;
 467 }
 468 EXPORT_SYMBOL(drm_crtc_cleanup);
 469
 470 /**
 471  * drm_mode_probed_add - add a mode to a connector's probed mode list
 472  * @connector: connector the new mode
 473  * @mode: mode data
 474  *
 475  * LOCKING:
 476  * Caller must hold mode config lock.
 477  *
 478  * Add @mode to @connector's mode list for later use.
 479  */
 480 void drm_mode_probed_add(struct drm_connector *connector,
 481                          struct drm_display_mode *mode)
 482 {
 483         list_add(&mode->head, &connector->probed_modes);
 484 }
 485 EXPORT_SYMBOL(drm_mode_probed_add);
 486
 487 /**
 488  * drm_mode_remove - remove and free a mode
 489  * @connector: connector list to modify
 490  * @mode: mode to remove
 491  *
 492  * LOCKING:
 493  * Caller must hold mode config lock.
 494  *
 495  * Remove @mode from @connector's mode list, then free it.
 496  */
 497 void drm_mode_remove(struct drm_connector *connector,
 498                      struct drm_display_mode *mode)
 499 {
 500         list_del(&mode->head);
 501         drm_mode_destroy(connector->dev, mode);
 502 }
 503 EXPORT_SYMBOL(drm_mode_remove);
 504
 505 /**
 506  * drm_connector_init - Init a preallocated connector
 507  * @dev: DRM device
 508  * @connector: the connector to init
 509  * @funcs: callbacks for this connector
 510  * @name: user visible name of the connector
 511  *
 512  * LOCKING:
 513  * Takes mode config lock.
 514  *
 515  * Initialises a preallocated connector. Connectors should be
 516  * subclassed as part of driver connector objects.
 517  *
 518  * RETURNS:
 519  * Zero on success, error code on failure.
 520  */
 521 int drm_connector_init(struct drm_device *dev,
 522                        struct drm_connector *connector,
 523                        const struct drm_connector_funcs *funcs,
 524                        int connector_type)
 525 {
 526         int ret;
 527
 528         sx_xlock(&dev->mode_config.mutex);
 529
 530         ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
 531         if (ret)
 532                 goto out;
 533
 534         connector->base.properties = &connector->properties;
 535         connector->dev = dev;
 536         connector->funcs = funcs;
 537         connector->connector_type = connector_type;
 538         connector->connector_type_id =
 539                 ++drm_connector_enum_list[connector_type].count; /* TODO */
 540         INIT_LIST_HEAD(&connector->user_modes);
 541         INIT_LIST_HEAD(&connector->probed_modes);
 542         INIT_LIST_HEAD(&connector->modes);
 543         connector->edid_blob_ptr = NULL;
 544         connector->status = connector_status_unknown;
 545
 546         list_add_tail(&connector->head, &dev->mode_config.connector_list);
 547         dev->mode_config.num_connector++;
 548
 549         if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
 550                 drm_object_attach_property(&connector->base,
 551                                               dev->mode_config.edid_property,
 552                                               0);
 553
 554         drm_object_attach_property(&connector->base,
 555                                       dev->mode_config.dpms_property, 0);
 556
 557  out:
 558         sx_xunlock(&dev->mode_config.mutex);
 559
 560         return ret;
 561 }
 562 EXPORT_SYMBOL(drm_connector_init);
 563
 564 /**
 565  * drm_connector_cleanup - cleans up an initialised connector
 566  * @connector: connector to cleanup
 567  *
 568  * LOCKING:
 569  * Takes mode config lock.
 570  *
 571  * Cleans up the connector but doesn't free the object.
 572  */
 573 void drm_connector_cleanup(struct drm_connector *connector)
 574 {
 575         struct drm_device *dev = connector->dev;
 576         struct drm_display_mode *mode, *t;
 577
 578         list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
 579                 drm_mode_remove(connector, mode);
 580
 581         list_for_each_entry_safe(mode, t, &connector->modes, head)
 582                 drm_mode_remove(connector, mode);
 583
 584         list_for_each_entry_safe(mode, t, &connector->user_modes, head)
 585                 drm_mode_remove(connector, mode);
 586
 587         sx_xlock(&dev->mode_config.mutex);
 588         drm_mode_object_put(dev, &connector->base);
 589         list_del(&connector->head);
 590         dev->mode_config.num_connector--;
 591         sx_xunlock(&dev->mode_config.mutex);
 592 }
 593 EXPORT_SYMBOL(drm_connector_cleanup);
 594
 595 void drm_connector_unplug_all(struct drm_device *dev)
 596 {
 597 #ifdef FREEBSD_NOTYET
 598         struct drm_connector *connector;
 599
 600         /* taking the mode config mutex ends up in a clash with sysfs */
 601         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 602                 drm_sysfs_connector_remove(connector);
 603 #endif /* FREEBSD_NOTYET */
 604
 605 }
 606 EXPORT_SYMBOL(drm_connector_unplug_all);
 607
 608 int drm_encoder_init(struct drm_device *dev,
 609                       struct drm_encoder *encoder,
 610                       const struct drm_encoder_funcs *funcs,
 611                       int encoder_type)
 612 {
 613         int ret;
 614
 615         sx_xlock(&dev->mode_config.mutex);
 616
 617         ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
 618         if (ret)
 619                 goto out;
 620
 621         encoder->dev = dev;
 622         encoder->encoder_type = encoder_type;
 623         encoder->funcs = funcs;
 624
 625         list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
 626         dev->mode_config.num_encoder++;
 627
 628  out:
 629         sx_xunlock(&dev->mode_config.mutex);
 630
 631         return ret;
 632 }
 633 EXPORT_SYMBOL(drm_encoder_init);
 634
 635 void drm_encoder_cleanup(struct drm_encoder *encoder)
 636 {
 637         struct drm_device *dev = encoder->dev;
 638         sx_xlock(&dev->mode_config.mutex);
 639         drm_mode_object_put(dev, &encoder->base);
 640         list_del(&encoder->head);
 641         dev->mode_config.num_encoder--;
 642         sx_xunlock(&dev->mode_config.mutex);
 643 }
 644 EXPORT_SYMBOL(drm_encoder_cleanup);
 645
 646 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
 647                    unsigned long possible_crtcs,
 648                    const struct drm_plane_funcs *funcs,
 649                    const uint32_t *formats, uint32_t format_count,
 650                    bool priv)
 651 {
 652         int ret;
 653
 654         sx_xlock(&dev->mode_config.mutex);
 655
 656         ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
 657         if (ret)
 658                 goto out;
 659
 660         plane->base.properties = &plane->properties;
 661         plane->dev = dev;
 662         plane->funcs = funcs;
 663         plane->format_types = malloc(sizeof(uint32_t) * format_count,
 664             DRM_MEM_KMS, M_WAITOK);
 665         if (!plane->format_types) {
 666                 DRM_DEBUG_KMS("out of memory when allocating plane\n");
 667                 drm_mode_object_put(dev, &plane->base);
 668                 ret = -ENOMEM;
 669                 goto out;
 670         }
 671
 672         memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
 673         plane->format_count = format_count;
 674         plane->possible_crtcs = possible_crtcs;
 675
 676         /* private planes are not exposed to userspace, but depending on
 677          * display hardware, might be convenient to allow sharing programming
 678          * for the scanout engine with the crtc implementation.
 679          */
 680         if (!priv) {
 681                 list_add_tail(&plane->head, &dev->mode_config.plane_list);
 682                 dev->mode_config.num_plane++;
 683         } else {
 684                 INIT_LIST_HEAD(&plane->head);
 685         }
 686
 687  out:
 688         sx_xunlock(&dev->mode_config.mutex);
 689
 690         return ret;
 691 }
 692 EXPORT_SYMBOL(drm_plane_init);
 693
 694 void drm_plane_cleanup(struct drm_plane *plane)
 695 {
 696         struct drm_device *dev = plane->dev;
 697
 698         sx_xlock(&dev->mode_config.mutex);
 699         free(plane->format_types, DRM_MEM_KMS);
 700         drm_mode_object_put(dev, &plane->base);
 701         /* if not added to a list, it must be a private plane */
 702         if (!list_empty(&plane->head)) {
 703                 list_del(&plane->head);
 704                 dev->mode_config.num_plane--;
 705         }
 706         sx_xunlock(&dev->mode_config.mutex);
 707 }
 708 EXPORT_SYMBOL(drm_plane_cleanup);
 709
 710 /**
 711  * drm_mode_create - create a new display mode
 712  * @dev: DRM device
 713  *
 714  * LOCKING:
 715  * Caller must hold DRM mode_config lock.
 716  *
 717  * Create a new drm_display_mode, give it an ID, and return it.
 718  *
 719  * RETURNS:
 720  * Pointer to new mode on success, NULL on error.
 721  */
 722 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
 723 {
 724         struct drm_display_mode *nmode;
 725
 726         nmode = malloc(sizeof(struct drm_display_mode), DRM_MEM_KMS,
 727             M_WAITOK | M_ZERO);
 728         if (!nmode)
 729                 return NULL;
 730
 731         if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) {
 732                 free(nmode, DRM_MEM_KMS);
 733                 return NULL;
 734         }
 735
 736         return nmode;
 737 }
 738 EXPORT_SYMBOL(drm_mode_create);
 739
 740 /**
 741  * drm_mode_destroy - remove a mode
 742  * @dev: DRM device
 743  * @mode: mode to remove
 744  *
 745  * LOCKING:
 746  * Caller must hold mode config lock.
 747  *
 748  * Free @mode's unique identifier, then free it.
 749  */
 750 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
 751 {
 752         if (!mode)
 753                 return;
 754
 755         drm_mode_object_put(dev, &mode->base);
 756
 757         free(mode, DRM_MEM_KMS);
 758 }
 759 EXPORT_SYMBOL(drm_mode_destroy);
 760
 761 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 762 {
 763         struct drm_property *edid;
 764         struct drm_property *dpms;
 765
 766         /*
 767          * Standard properties (apply to all connectors)
 768          */
 769         edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
 770                                    DRM_MODE_PROP_IMMUTABLE,
 771                                    "EDID", 0);
 772         dev->mode_config.edid_property = edid;
 773
 774         dpms = drm_property_create_enum(dev, 0,
 775                                    "DPMS", drm_dpms_enum_list,
 776                                    ARRAY_SIZE(drm_dpms_enum_list));
 777         dev->mode_config.dpms_property = dpms;
 778
 779         return 0;
 780 }
 781
 782 /**
 783  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
 784  * @dev: DRM device
 785  *
 786  * Called by a driver the first time a DVI-I connector is made.
 787  */
 788 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
 789 {
 790         struct drm_property *dvi_i_selector;
 791         struct drm_property *dvi_i_subconnector;
 792
 793         if (dev->mode_config.dvi_i_select_subconnector_property)
 794                 return 0;
 795
 796         dvi_i_selector =
 797                 drm_property_create_enum(dev, 0,
 798                                     "select subconnector",
 799                                     drm_dvi_i_select_enum_list,
 800                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
 801         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
 802
 803         dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
 804                                     "subconnector",
 805                                     drm_dvi_i_subconnector_enum_list,
 806                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
 807         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
 808
 809         return 0;
 810 }
 811 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
 812
 813 /**
 814  * drm_create_tv_properties - create TV specific connector properties
 815  * @dev: DRM device
 816  * @num_modes: number of different TV formats (modes) supported
 817  * @modes: array of pointers to strings containing name of each format
 818  *
 819  * Called by a driver's TV initialization routine, this function creates
 820  * the TV specific connector properties for a given device.  Caller is
 821  * responsible for allocating a list of format names and passing them to
 822  * this routine.
 823  */
 824 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
 825                                   char *modes[])
 826 {
 827         struct drm_property *tv_selector;
 828         struct drm_property *tv_subconnector;
 829         int i;
 830
 831         if (dev->mode_config.tv_select_subconnector_property)
 832                 return 0;
 833
 834         /*
 835          * Basic connector properties
 836          */
 837         tv_selector = drm_property_create_enum(dev, 0,
 838                                           "select subconnector",
 839                                           drm_tv_select_enum_list,
 840                                           ARRAY_SIZE(drm_tv_select_enum_list));
 841         dev->mode_config.tv_select_subconnector_property = tv_selector;
 842
 843         tv_subconnector =
 844                 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
 845                                     "subconnector",
 846                                     drm_tv_subconnector_enum_list,
 847                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
 848         dev->mode_config.tv_subconnector_property = tv_subconnector;
 849
 850         /*
 851          * Other, TV specific properties: margins & TV modes.
 852          */
 853         dev->mode_config.tv_left_margin_property =
 854                 drm_property_create_range(dev, 0, "left margin", 0, 100);
 855
 856         dev->mode_config.tv_right_margin_property =
 857                 drm_property_create_range(dev, 0, "right margin", 0, 100);
 858
 859         dev->mode_config.tv_top_margin_property =
 860                 drm_property_create_range(dev, 0, "top margin", 0, 100);
 861
 862         dev->mode_config.tv_bottom_margin_property =
 863                 drm_property_create_range(dev, 0, "bottom margin", 0, 100);
 864
 865         dev->mode_config.tv_mode_property =
 866                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 867                                     "mode", num_modes);
 868         for (i = 0; i < num_modes; i++)
 869                 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
 870                                       i, modes[i]);
 871
 872         dev->mode_config.tv_brightness_property =
 873                 drm_property_create_range(dev, 0, "brightness", 0, 100);
 874
 875         dev->mode_config.tv_contrast_property =
 876                 drm_property_create_range(dev, 0, "contrast", 0, 100);
 877
 878         dev->mode_config.tv_flicker_reduction_property =
 879                 drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
 880
 881         dev->mode_config.tv_overscan_property =
 882                 drm_property_create_range(dev, 0, "overscan", 0, 100);
 883
 884         dev->mode_config.tv_saturation_property =
 885                 drm_property_create_range(dev, 0, "saturation", 0, 100);
 886
 887         dev->mode_config.tv_hue_property =
 888                 drm_property_create_range(dev, 0, "hue", 0, 100);
 889
 890         return 0;
 891 }
 892 EXPORT_SYMBOL(drm_mode_create_tv_properties);
 893
 894 /**
 895  * drm_mode_create_scaling_mode_property - create scaling mode property
 896  * @dev: DRM device
 897  *
 898  * Called by a driver the first time it's needed, must be attached to desired
 899  * connectors.
 900  */
 901 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
 902 {
 903         struct drm_property *scaling_mode;
 904
 905         if (dev->mode_config.scaling_mode_property)
 906                 return 0;
 907
 908         scaling_mode =
 909                 drm_property_create_enum(dev, 0, "scaling mode",
 910                                 drm_scaling_mode_enum_list,
 911                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
 912
 913         dev->mode_config.scaling_mode_property = scaling_mode;
 914
 915         return 0;
 916 }
 917 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
 918
 919 /**
 920  * drm_mode_create_dithering_property - create dithering property
 921  * @dev: DRM device
 922  *
 923  * Called by a driver the first time it's needed, must be attached to desired
 924  * connectors.
 925  */
 926 int drm_mode_create_dithering_property(struct drm_device *dev)
 927 {
 928         struct drm_property *dithering_mode;
 929
 930         if (dev->mode_config.dithering_mode_property)
 931                 return 0;
 932
 933         dithering_mode =
 934                 drm_property_create_enum(dev, 0, "dithering",
 935                                 drm_dithering_mode_enum_list,
 936                                     ARRAY_SIZE(drm_dithering_mode_enum_list));
 937         dev->mode_config.dithering_mode_property = dithering_mode;
 938
 939         return 0;
 940 }
 941 EXPORT_SYMBOL(drm_mode_create_dithering_property);
 942
 943 /**
 944  * drm_mode_create_dirty_property - create dirty property
 945  * @dev: DRM device
 946  *
 947  * Called by a driver the first time it's needed, must be attached to desired
 948  * connectors.
 949  */
 950 int drm_mode_create_dirty_info_property(struct drm_device *dev)
 951 {
 952         struct drm_property *dirty_info;
 953
 954         if (dev->mode_config.dirty_info_property)
 955                 return 0;
 956
 957         dirty_info =
 958                 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
 959                                     "dirty",
 960                                     drm_dirty_info_enum_list,
 961                                     ARRAY_SIZE(drm_dirty_info_enum_list));
 962         dev->mode_config.dirty_info_property = dirty_info;
 963
 964         return 0;
 965 }
 966 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
 967
 968 /**
 969  * drm_mode_config_init - initialize DRM mode_configuration structure
 970  * @dev: DRM device
 971  *
 972  * LOCKING:
 973  * None, should happen single threaded at init time.
 974  *
 975  * Initialize @dev's mode_config structure, used for tracking the graphics
 976  * configuration of @dev.
 977  */
 978 void drm_mode_config_init(struct drm_device *dev)
 979 {
 980         sx_init(&dev->mode_config.mutex, "kmslk");
 981         INIT_LIST_HEAD(&dev->mode_config.fb_list);
 982         INIT_LIST_HEAD(&dev->mode_config.crtc_list);
 983         INIT_LIST_HEAD(&dev->mode_config.connector_list);
 984         INIT_LIST_HEAD(&dev->mode_config.encoder_list);
 985         INIT_LIST_HEAD(&dev->mode_config.property_list);
 986         INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
 987         INIT_LIST_HEAD(&dev->mode_config.plane_list);
 988         drm_gem_names_init(&dev->mode_config.crtc_names);
 989
 990         sx_xlock(&dev->mode_config.mutex);
 991         drm_mode_create_standard_connector_properties(dev);
 992         sx_xunlock(&dev->mode_config.mutex);
 993
 994         /* Just to be sure */
 995         dev->mode_config.num_fb = 0;
 996         dev->mode_config.num_connector = 0;
 997         dev->mode_config.num_crtc = 0;
 998         dev->mode_config.num_encoder = 0;
 999 }
1000 EXPORT_SYMBOL(drm_mode_config_init);
1001
1002 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
1003 {
1004         uint32_t total_objects = 0;
1005
1006         total_objects += dev->mode_config.num_crtc;
1007         total_objects += dev->mode_config.num_connector;
1008         total_objects += dev->mode_config.num_encoder;
1009
1010         group->id_list = malloc(total_objects * sizeof(uint32_t),
1011             DRM_MEM_KMS, M_WAITOK | M_ZERO);
1012         if (!group->id_list)
1013                 return -ENOMEM;
1014
1015         group->num_crtcs = 0;
1016         group->num_connectors = 0;
1017         group->num_encoders = 0;
1018         return 0;
1019 }
1020
1021 void drm_mode_group_free(struct drm_mode_group *group)
1022 {
1023         free(group->id_list, DRM_MEM_KMS);
1024         group->id_list = NULL;
1025 }
1026
1027 int drm_mode_group_init_legacy_group(struct drm_device *dev,
1028                                      struct drm_mode_group *group)
1029 {
1030         struct drm_crtc *crtc;
1031         struct drm_encoder *encoder;
1032         struct drm_connector *connector;
1033         int ret;
1034
1035         if ((ret = drm_mode_group_init(dev, group)))
1036                 return ret;
1037
1038         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1039                 group->id_list[group->num_crtcs++] = crtc->base.id;
1040
1041         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
1042                 group->id_list[group->num_crtcs + group->num_encoders++] =
1043                 encoder->base.id;
1044
1045         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
1046                 group->id_list[group->num_crtcs + group->num_encoders +
1047                                group->num_connectors++] = connector->base.id;
1048
1049         return 0;
1050 }
1051 EXPORT_SYMBOL(drm_mode_group_init_legacy_group);
1052
1053 /**
1054  * drm_mode_config_cleanup - free up DRM mode_config info
1055  * @dev: DRM device
1056  *
1057  * LOCKING:
1058  * Caller must hold mode config lock.
1059  *
1060  * Free up all the connectors and CRTCs associated with this DRM device, then
1061  * free up the framebuffers and associated buffer objects.
1062  *
1063  * FIXME: cleanup any dangling user buffer objects too
1064  */
1065 void drm_mode_config_cleanup(struct drm_device *dev)
1066 {
1067         struct drm_connector *connector, *ot;
1068         struct drm_crtc *crtc, *ct;
1069         struct drm_encoder *encoder, *enct;
1070         struct drm_framebuffer *fb, *fbt;
1071         struct drm_property *property, *pt;
1072         struct drm_property_blob *blob, *bt;
1073         struct drm_plane *plane, *plt;
1074
1075         list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
1076                                  head) {
1077                 encoder->funcs->destroy(encoder);
1078         }
1079
1080         list_for_each_entry_safe(connector, ot,
1081                                  &dev->mode_config.connector_list, head) {
1082                 connector->funcs->destroy(connector);
1083         }
1084
1085         list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
1086                                  head) {
1087                 drm_property_destroy(dev, property);
1088         }
1089
1090         list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
1091                                  head) {
1092                 drm_property_destroy_blob(dev, blob);
1093         }
1094
1095         list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
1096                 drm_framebuffer_remove(fb);
1097         }
1098
1099         list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
1100                                  head) {
1101                 plane->funcs->destroy(plane);
1102         }
1103
1104         list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
1105                 crtc->funcs->destroy(crtc);
1106         }
1107
1108         drm_gem_names_fini(&dev->mode_config.crtc_names);
1109 }
1110 EXPORT_SYMBOL(drm_mode_config_cleanup);
1111
1112 /**
1113  * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1114  * @out: drm_mode_modeinfo struct to return to the user
1115  * @in: drm_display_mode to use
1116  *
1117  * LOCKING:
1118  * None.
1119  *
1120  * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1121  * the user.
1122  */
1123 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1124                                       const struct drm_display_mode *in)
1125 {
1126         if (in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX ||
1127              in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX ||
1128              in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX ||
1129              in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX ||
1130              in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX)
1131                 DRM_WARNING("timing values too large for mode info\n");
1132
1133         out->clock = in->clock;
1134         out->hdisplay = in->hdisplay;
1135         out->hsync_start = in->hsync_start;
1136         out->hsync_end = in->hsync_end;
1137         out->htotal = in->htotal;
1138         out->hskew = in->hskew;
1139         out->vdisplay = in->vdisplay;
1140         out->vsync_start = in->vsync_start;
1141         out->vsync_end = in->vsync_end;
1142         out->vtotal = in->vtotal;
1143         out->vscan = in->vscan;
1144         out->vrefresh = in->vrefresh;
1145         out->flags = in->flags;
1146         out->type = in->type;
1147         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1148         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1149 }
1150
1151 /**
1152  * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1153  * @out: drm_display_mode to return to the user
1154  * @in: drm_mode_modeinfo to use
1155  *
1156  * LOCKING:
1157  * None.
1158  *
1159  * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1160  * the caller.
1161  *
1162  * RETURNS:
1163  * Zero on success, errno on failure.
1164  */
1165 static int drm_crtc_convert_umode(struct drm_display_mode *out,
1166                                   const struct drm_mode_modeinfo *in)
1167 {
1168         if (in->clock > INT_MAX || in->vrefresh > INT_MAX)
1169                 return -ERANGE;
1170
1171         out->clock = in->clock;
1172         out->hdisplay = in->hdisplay;
1173         out->hsync_start = in->hsync_start;
1174         out->hsync_end = in->hsync_end;
1175         out->htotal = in->htotal;
1176         out->hskew = in->hskew;
1177         out->vdisplay = in->vdisplay;
1178         out->vsync_start = in->vsync_start;
1179         out->vsync_end = in->vsync_end;
1180         out->vtotal = in->vtotal;
1181         out->vscan = in->vscan;
1182         out->vrefresh = in->vrefresh;
1183         out->flags = in->flags;
1184         out->type = in->type;
1185         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1186         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1187
1188         return 0;
1189 }
1190
1191 /**
1192  * drm_mode_getresources - get graphics configuration
1193  * @inode: inode from the ioctl
1194  * @filp: file * from the ioctl
1195  * @cmd: cmd from ioctl
1196  * @arg: arg from ioctl
1197  *
1198  * LOCKING:
1199  * Takes mode config lock.
1200  *
1201  * Construct a set of configuration description structures and return
1202  * them to the user, including CRTC, connector and framebuffer configuration.
1203  *
1204  * Called by the user via ioctl.
1205  *
1206  * RETURNS:
1207  * Zero on success, errno on failure.
1208  */
1209 int drm_mode_getresources(struct drm_device *dev, void *data,
1210                           struct drm_file *file_priv)
1211 {
1212         struct drm_mode_card_res *card_res = data;
1213         struct list_head *lh;
1214         struct drm_framebuffer *fb;
1215         struct drm_connector *connector;
1216         struct drm_crtc *crtc;
1217         struct drm_encoder *encoder;
1218         int ret = 0;
1219         int connector_count = 0;
1220         int crtc_count = 0;
1221         int fb_count = 0;
1222         int encoder_count = 0;
1223         int copied = 0, i;
1224         uint32_t __user *fb_id;
1225         uint32_t __user *crtc_id;
1226         uint32_t __user *connector_id;
1227         uint32_t __user *encoder_id;
1228         struct drm_mode_group *mode_group;
1229
1230         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1231                 return -EINVAL;
1232
1233         sx_xlock(&dev->mode_config.mutex);
1234
1235         /*
1236          * For the non-control nodes we need to limit the list of resources
1237          * by IDs in the group list for this node
1238          */
1239         list_for_each(lh, &file_priv->fbs)
1240                 fb_count++;
1241
1242         mode_group = &file_priv->master->minor->mode_group;
1243         if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1244
1245                 list_for_each(lh, &dev->mode_config.crtc_list)
1246                         crtc_count++;
1247
1248                 list_for_each(lh, &dev->mode_config.connector_list)
1249                         connector_count++;
1250
1251                 list_for_each(lh, &dev->mode_config.encoder_list)
1252                         encoder_count++;
1253         } else {
1254
1255                 crtc_count = mode_group->num_crtcs;
1256                 connector_count = mode_group->num_connectors;
1257                 encoder_count = mode_group->num_encoders;
1258         }
1259
1260         card_res->max_height = dev->mode_config.max_height;
1261         card_res->min_height = dev->mode_config.min_height;
1262         card_res->max_width = dev->mode_config.max_width;
1263         card_res->min_width = dev->mode_config.min_width;
1264
1265         /* handle this in 4 parts */
1266         /* FBs */
1267         if (card_res->count_fbs >= fb_count) {
1268                 copied = 0;
1269                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1270                 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1271                         if (put_user(fb->base.id, fb_id + copied)) {
1272                                 ret = -EFAULT;
1273                                 goto out;
1274                         }
1275                         copied++;
1276                 }
1277         }
1278         card_res->count_fbs = fb_count;
1279
1280         /* CRTCs */
1281         if (card_res->count_crtcs >= crtc_count) {
1282                 copied = 0;
1283                 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1284                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1285                         list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1286                                             head) {
1287                                 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1288                                 if (put_user(crtc->base.id, crtc_id + copied)) {
1289                                         ret = -EFAULT;
1290                                         goto out;
1291                                 }
1292                                 copied++;
1293                         }
1294                 } else {
1295                         for (i = 0; i < mode_group->num_crtcs; i++) {
1296                                 if (put_user(mode_group->id_list[i],
1297                                              crtc_id + copied)) {
1298                                         ret = -EFAULT;
1299                                         goto out;
1300                                 }
1301                                 copied++;
1302                         }
1303                 }
1304         }
1305         card_res->count_crtcs = crtc_count;
1306
1307         /* Encoders */
1308         if (card_res->count_encoders >= encoder_count) {
1309                 copied = 0;
1310                 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1311                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1312                         list_for_each_entry(encoder,
1313                                             &dev->mode_config.encoder_list,
1314                                             head) {
1315                                 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1316                                                 drm_get_encoder_name(encoder));
1317                                 if (put_user(encoder->base.id, encoder_id +
1318                                              copied)) {
1319                                         ret = -EFAULT;
1320                                         goto out;
1321                                 }
1322                                 copied++;
1323                         }
1324                 } else {
1325                         for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1326                                 if (put_user(mode_group->id_list[i],
1327                                              encoder_id + copied)) {
1328                                         ret = -EFAULT;
1329                                         goto out;
1330                                 }
1331                                 copied++;
1332                         }
1333
1334                 }
1335         }
1336         card_res->count_encoders = encoder_count;
1337
1338         /* Connectors */
1339         if (card_res->count_connectors >= connector_count) {
1340                 copied = 0;
1341                 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1342                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1343                         list_for_each_entry(connector,
1344                                             &dev->mode_config.connector_list,
1345                                             head) {
1346                                 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1347                                         connector->base.id,
1348                                         drm_get_connector_name(connector));
1349                                 if (put_user(connector->base.id,
1350                                              connector_id + copied)) {
1351                                         ret = -EFAULT;
1352                                         goto out;
1353                                 }
1354                                 copied++;
1355                         }
1356                 } else {
1357                         int start = mode_group->num_crtcs +
1358                                 mode_group->num_encoders;
1359                         for (i = start; i < start + mode_group->num_connectors; i++) {
1360                                 if (put_user(mode_group->id_list[i],
1361                                              connector_id + copied)) {
1362                                         ret = -EFAULT;
1363                                         goto out;
1364                                 }
1365                                 copied++;
1366                         }
1367                 }
1368         }
1369         card_res->count_connectors = connector_count;
1370
1371         DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1372                   card_res->count_connectors, card_res->count_encoders);
1373
1374 out:
1375         sx_xunlock(&dev->mode_config.mutex);
1376         return ret;
1377 }
1378
1379 /**
1380  * drm_mode_getcrtc - get CRTC configuration
1381  * @inode: inode from the ioctl
1382  * @filp: file * from the ioctl
1383  * @cmd: cmd from ioctl
1384  * @arg: arg from ioctl
1385  *
1386  * LOCKING:
1387  * Takes mode config lock.
1388  *
1389  * Construct a CRTC configuration structure to return to the user.
1390  *
1391  * Called by the user via ioctl.
1392  *
1393  * RETURNS:
1394  * Zero on success, errno on failure.
1395  */
1396 int drm_mode_getcrtc(struct drm_device *dev,
1397                      void *data, struct drm_file *file_priv)
1398 {
1399         struct drm_mode_crtc *crtc_resp = data;
1400         struct drm_crtc *crtc;
1401         struct drm_mode_object *obj;
1402         int ret = 0;
1403
1404         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1405                 return -EINVAL;
1406
1407         sx_xlock(&dev->mode_config.mutex);
1408
1409         obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1410                                    DRM_MODE_OBJECT_CRTC);
1411         if (!obj) {
1412                 ret = -EINVAL;
1413                 goto out;
1414         }
1415         crtc = obj_to_crtc(obj);
1416
1417         crtc_resp->x = crtc->x;
1418         crtc_resp->y = crtc->y;
1419         crtc_resp->gamma_size = crtc->gamma_size;
1420         if (crtc->fb)
1421                 crtc_resp->fb_id = crtc->fb->base.id;
1422         else
1423                 crtc_resp->fb_id = 0;
1424
1425         if (crtc->enabled) {
1426
1427                 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1428                 crtc_resp->mode_valid = 1;
1429
1430         } else {
1431                 crtc_resp->mode_valid = 0;
1432         }
1433
1434 out:
1435         sx_xunlock(&dev->mode_config.mutex);
1436         return ret;
1437 }
1438
1439 /**
1440  * drm_mode_getconnector - get connector configuration
1441  * @inode: inode from the ioctl
1442  * @filp: file * from the ioctl
1443  * @cmd: cmd from ioctl
1444  * @arg: arg from ioctl
1445  *
1446  * LOCKING:
1447  * Takes mode config lock.
1448  *
1449  * Construct a connector configuration structure to return to the user.
1450  *
1451  * Called by the user via ioctl.
1452  *
1453  * RETURNS:
1454  * Zero on success, errno on failure.
1455  */
1456 int drm_mode_getconnector(struct drm_device *dev, void *data,
1457                           struct drm_file *file_priv)
1458 {
1459         struct drm_mode_get_connector *out_resp = data;
1460         struct drm_mode_object *obj;
1461         struct drm_connector *connector;
1462         struct drm_display_mode *mode;
1463         int mode_count = 0;
1464         int props_count = 0;
1465         int encoders_count = 0;
1466         int ret = 0;
1467         int copied = 0;
1468         int i;
1469         struct drm_mode_modeinfo u_mode;
1470         struct drm_mode_modeinfo __user *mode_ptr;
1471         uint32_t __user *prop_ptr;
1472         uint64_t __user *prop_values;
1473         uint32_t __user *encoder_ptr;
1474
1475         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1476                 return -EINVAL;
1477
1478         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1479
1480         DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1481
1482         sx_xlock(&dev->mode_config.mutex);
1483
1484         obj = drm_mode_object_find(dev, out_resp->connector_id,
1485                                    DRM_MODE_OBJECT_CONNECTOR);
1486         if (!obj) {
1487                 ret = -EINVAL;
1488                 goto out;
1489         }
1490         connector = obj_to_connector(obj);
1491
1492         props_count = connector->properties.count;
1493
1494         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1495                 if (connector->encoder_ids[i] != 0) {
1496                         encoders_count++;
1497                 }
1498         }
1499
1500         if (out_resp->count_modes == 0) {
1501                 connector->funcs->fill_modes(connector,
1502                                              dev->mode_config.max_width,
1503                                              dev->mode_config.max_height);
1504         }
1505
1506         /* delayed so we get modes regardless of pre-fill_modes state */
1507         list_for_each_entry(mode, &connector->modes, head)
1508                 mode_count++;
1509
1510         out_resp->connector_id = connector->base.id;
1511         out_resp->connector_type = connector->connector_type;
1512         out_resp->connector_type_id = connector->connector_type_id;
1513         out_resp->mm_width = connector->display_info.width_mm;
1514         out_resp->mm_height = connector->display_info.height_mm;
1515         out_resp->subpixel = connector->display_info.subpixel_order;
1516         out_resp->connection = connector->status;
1517         if (connector->encoder)
1518                 out_resp->encoder_id = connector->encoder->base.id;
1519         else
1520                 out_resp->encoder_id = 0;
1521
1522         /*
1523          * This ioctl is called twice, once to determine how much space is
1524          * needed, and the 2nd time to fill it.
1525          */
1526         if ((out_resp->count_modes >= mode_count) && mode_count) {
1527                 copied = 0;
1528                 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1529                 list_for_each_entry(mode, &connector->modes, head) {
1530                         drm_crtc_convert_to_umode(&u_mode, mode);
1531                         if (copy_to_user(mode_ptr + copied,
1532                                          &u_mode, sizeof(u_mode))) {
1533                                 ret = -EFAULT;
1534                                 goto out;
1535                         }
1536                         copied++;
1537                 }
1538         }
1539         out_resp->count_modes = mode_count;
1540
1541         if ((out_resp->count_props >= props_count) && props_count) {
1542                 copied = 0;
1543                 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1544                 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1545                 for (i = 0; i < connector->properties.count; i++) {
1546                         if (put_user(connector->properties.ids[i],
1547                                      prop_ptr + copied)) {
1548                                 ret = -EFAULT;
1549                                 goto out;
1550                         }
1551
1552                         if (put_user(connector->properties.values[i],
1553                                      prop_values + copied)) {
1554                                 ret = -EFAULT;
1555                                 goto out;
1556                         }
1557                         copied++;
1558                 }
1559         }
1560         out_resp->count_props = props_count;
1561
1562         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1563                 copied = 0;
1564                 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1565                 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1566                         if (connector->encoder_ids[i] != 0) {
1567                                 if (put_user(connector->encoder_ids[i],
1568                                              encoder_ptr + copied)) {
1569                                         ret = -EFAULT;
1570                                         goto out;
1571                                 }
1572                                 copied++;
1573                         }
1574                 }
1575         }
1576         out_resp->count_encoders = encoders_count;
1577
1578 out:
1579         sx_xunlock(&dev->mode_config.mutex);
1580         return ret;
1581 }
1582
1583 int drm_mode_getencoder(struct drm_device *dev, void *data,
1584                         struct drm_file *file_priv)
1585 {
1586         struct drm_mode_get_encoder *enc_resp = data;
1587         struct drm_mode_object *obj;
1588         struct drm_encoder *encoder;
1589         int ret = 0;
1590
1591         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1592                 return -EINVAL;
1593
1594         sx_xlock(&dev->mode_config.mutex);
1595         obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1596                                    DRM_MODE_OBJECT_ENCODER);
1597         if (!obj) {
1598                 ret = -EINVAL;
1599                 goto out;
1600         }
1601         encoder = obj_to_encoder(obj);
1602
1603         if (encoder->crtc)
1604                 enc_resp->crtc_id = encoder->crtc->base.id;
1605         else
1606                 enc_resp->crtc_id = 0;
1607         enc_resp->encoder_type = encoder->encoder_type;
1608         enc_resp->encoder_id = encoder->base.id;
1609         enc_resp->possible_crtcs = encoder->possible_crtcs;
1610         enc_resp->possible_clones = encoder->possible_clones;
1611
1612 out:
1613         sx_xunlock(&dev->mode_config.mutex);
1614         return ret;
1615 }
1616
1617 /**
1618  * drm_mode_getplane_res - get plane info
1619  * @dev: DRM device
1620  * @data: ioctl data
1621  * @file_priv: DRM file info
1622  *
1623  * LOCKING:
1624  * Takes mode config lock.
1625  *
1626  * Return an plane count and set of IDs.
1627  */
1628 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1629                             struct drm_file *file_priv)
1630 {
1631         struct drm_mode_get_plane_res *plane_resp = data;
1632         struct drm_mode_config *config;
1633         struct drm_plane *plane;
1634         uint32_t __user *plane_ptr;
1635         int copied = 0, ret = 0;
1636
1637         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1638                 return -EINVAL;
1639
1640         sx_xlock(&dev->mode_config.mutex);
1641         config = &dev->mode_config;
1642
1643         /*
1644          * This ioctl is called twice, once to determine how much space is
1645          * needed, and the 2nd time to fill it.
1646          */
1647         if (config->num_plane &&
1648             (plane_resp->count_planes >= config->num_plane)) {
1649                 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1650
1651                 list_for_each_entry(plane, &config->plane_list, head) {
1652                         if (put_user(plane->base.id, plane_ptr + copied)) {
1653                                 ret = -EFAULT;
1654                                 goto out;
1655                         }
1656                         copied++;
1657                 }
1658         }
1659         plane_resp->count_planes = config->num_plane;
1660
1661 out:
1662         sx_xunlock(&dev->mode_config.mutex);
1663         return ret;
1664 }
1665
1666 /**
1667  * drm_mode_getplane - get plane info
1668  * @dev: DRM device
1669  * @data: ioctl data
1670  * @file_priv: DRM file info
1671  *
1672  * LOCKING:
1673  * Takes mode config lock.
1674  *
1675  * Return plane info, including formats supported, gamma size, any
1676  * current fb, etc.
1677  */
1678 int drm_mode_getplane(struct drm_device *dev, void *data,
1679                         struct drm_file *file_priv)
1680 {
1681         struct drm_mode_get_plane *plane_resp = data;
1682         struct drm_mode_object *obj;
1683         struct drm_plane *plane;
1684         uint32_t __user *format_ptr;
1685         int ret = 0;
1686
1687         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1688                 return -EINVAL;
1689
1690         sx_xlock(&dev->mode_config.mutex);
1691         obj = drm_mode_object_find(dev, plane_resp->plane_id,
1692                                    DRM_MODE_OBJECT_PLANE);
1693         if (!obj) {
1694                 ret = -ENOENT;
1695                 goto out;
1696         }
1697         plane = obj_to_plane(obj);
1698
1699         if (plane->crtc)
1700                 plane_resp->crtc_id = plane->crtc->base.id;
1701         else
1702                 plane_resp->crtc_id = 0;
1703
1704         if (plane->fb)
1705                 plane_resp->fb_id = plane->fb->base.id;
1706         else
1707                 plane_resp->fb_id = 0;
1708
1709         plane_resp->plane_id = plane->base.id;
1710         plane_resp->possible_crtcs = plane->possible_crtcs;
1711         plane_resp->gamma_size = plane->gamma_size;
1712
1713         /*
1714          * This ioctl is called twice, once to determine how much space is
1715          * needed, and the 2nd time to fill it.
1716          */
1717         if (plane->format_count &&
1718             (plane_resp->count_format_types >= plane->format_count)) {
1719                 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
1720                 if (copy_to_user(format_ptr,
1721                                  plane->format_types,
1722                                  sizeof(uint32_t) * plane->format_count)) {
1723                         ret = -EFAULT;
1724                         goto out;
1725                 }
1726         }
1727         plane_resp->count_format_types = plane->format_count;
1728
1729 out:
1730         sx_xunlock(&dev->mode_config.mutex);
1731         return ret;
1732 }
1733
1734 /**
1735  * drm_mode_setplane - set up or tear down an plane
1736  * @dev: DRM device
1737  * @data: ioctl data*
1738  * @file_prive: DRM file info
1739  *
1740  * LOCKING:
1741  * Takes mode config lock.
1742  *
1743  * Set plane info, including placement, fb, scaling, and other factors.
1744  * Or pass a NULL fb to disable.
1745  */
1746 int drm_mode_setplane(struct drm_device *dev, void *data,
1747                         struct drm_file *file_priv)
1748 {
1749         struct drm_mode_set_plane *plane_req = data;
1750         struct drm_mode_object *obj;
1751         struct drm_plane *plane;
1752         struct drm_crtc *crtc;
1753         struct drm_framebuffer *fb;
1754         int ret = 0;
1755         unsigned int fb_width, fb_height;
1756         int i;
1757
1758         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1759                 return -EINVAL;
1760
1761         sx_xlock(&dev->mode_config.mutex);
1762
1763         /*
1764          * First, find the plane, crtc, and fb objects.  If not available,
1765          * we don't bother to call the driver.
1766          */
1767         obj = drm_mode_object_find(dev, plane_req->plane_id,
1768                                    DRM_MODE_OBJECT_PLANE);
1769         if (!obj) {
1770                 DRM_DEBUG_KMS("Unknown plane ID %d\n",
1771                               plane_req->plane_id);
1772                 ret = -ENOENT;
1773                 goto out;
1774         }
1775         plane = obj_to_plane(obj);
1776
1777         /* No fb means shut it down */
1778         if (!plane_req->fb_id) {
1779                 plane->funcs->disable_plane(plane);
1780                 plane->crtc = NULL;
1781                 plane->fb = NULL;
1782                 goto out;
1783         }
1784
1785         obj = drm_mode_object_find(dev, plane_req->crtc_id,
1786                                    DRM_MODE_OBJECT_CRTC);
1787         if (!obj) {
1788                 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
1789                               plane_req->crtc_id);
1790                 ret = -ENOENT;
1791                 goto out;
1792         }
1793         crtc = obj_to_crtc(obj);
1794
1795         obj = drm_mode_object_find(dev, plane_req->fb_id,
1796                                    DRM_MODE_OBJECT_FB);
1797         if (!obj) {
1798                 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
1799                               plane_req->fb_id);
1800                 ret = -ENOENT;
1801                 goto out;
1802         }
1803         fb = obj_to_fb(obj);
1804
1805         /* Check whether this plane supports the fb pixel format. */
1806         for (i = 0; i < plane->format_count; i++)
1807                 if (fb->pixel_format == plane->format_types[i])
1808                         break;
1809         if (i == plane->format_count) {
1810                 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
1811                 ret = -EINVAL;
1812                 goto out;
1813         }
1814
1815         fb_width = fb->width << 16;
1816         fb_height = fb->height << 16;
1817
1818         /* Make sure source coordinates are inside the fb. */
1819         if (plane_req->src_w > fb_width ||
1820             plane_req->src_x > fb_width - plane_req->src_w ||
1821             plane_req->src_h > fb_height ||
1822             plane_req->src_y > fb_height - plane_req->src_h) {
1823                 DRM_DEBUG_KMS("Invalid source coordinates "
1824                               "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
1825                               plane_req->src_w >> 16,
1826                               ((plane_req->src_w & 0xffff) * 15625) >> 10,
1827                               plane_req->src_h >> 16,
1828                               ((plane_req->src_h & 0xffff) * 15625) >> 10,
1829                               plane_req->src_x >> 16,
1830                               ((plane_req->src_x & 0xffff) * 15625) >> 10,
1831                               plane_req->src_y >> 16,
1832                               ((plane_req->src_y & 0xffff) * 15625) >> 10);
1833                 ret = -ENOSPC;
1834                 goto out;
1835         }
1836
1837         /* Give drivers some help against integer overflows */
1838         if (plane_req->crtc_w > INT_MAX ||
1839             plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
1840             plane_req->crtc_h > INT_MAX ||
1841             plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
1842                 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
1843                               plane_req->crtc_w, plane_req->crtc_h,
1844                               plane_req->crtc_x, plane_req->crtc_y);
1845                 ret = -ERANGE;
1846                 goto out;
1847         }
1848
1849         ret = plane->funcs->update_plane(plane, crtc, fb,
1850                                          plane_req->crtc_x, plane_req->crtc_y,
1851                                          plane_req->crtc_w, plane_req->crtc_h,
1852                                          plane_req->src_x, plane_req->src_y,
1853                                          plane_req->src_w, plane_req->src_h);
1854         if (!ret) {
1855                 plane->crtc = crtc;
1856                 plane->fb = fb;
1857         }
1858
1859 out:
1860         sx_xunlock(&dev->mode_config.mutex);
1861
1862         return ret;
1863 }
1864
1865 /**
1866  * drm_mode_setcrtc - set CRTC configuration
1867  * @inode: inode from the ioctl
1868  * @filp: file * from the ioctl
1869  * @cmd: cmd from ioctl
1870  * @arg: arg from ioctl
1871  *
1872  * LOCKING:
1873  * Takes mode config lock.
1874  *
1875  * Build a new CRTC configuration based on user request.
1876  *
1877  * Called by the user via ioctl.
1878  *
1879  * RETURNS:
1880  * Zero on success, errno on failure.
1881  */
1882 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1883                      struct drm_file *file_priv)
1884 {
1885         struct drm_mode_config *config = &dev->mode_config;
1886         struct drm_mode_crtc *crtc_req = data;
1887         struct drm_mode_object *obj;
1888         struct drm_crtc *crtc;
1889         struct drm_connector **connector_set = NULL, *connector;
1890         struct drm_framebuffer *fb = NULL;
1891         struct drm_display_mode *mode = NULL;
1892         struct drm_mode_set set;
1893         uint32_t __user *set_connectors_ptr;
1894         int ret;
1895         int i;
1896
1897         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1898                 return -EINVAL;
1899
1900         /* For some reason crtc x/y offsets are signed internally. */
1901         if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX)
1902                 return -ERANGE;
1903
1904         sx_xlock(&dev->mode_config.mutex);
1905         obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1906                                    DRM_MODE_OBJECT_CRTC);
1907         if (!obj) {
1908                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1909                 ret = -EINVAL;
1910                 goto out;
1911         }
1912         crtc = obj_to_crtc(obj);
1913         DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1914
1915         if (crtc_req->mode_valid) {
1916                 int hdisplay, vdisplay;
1917                 /* If we have a mode we need a framebuffer. */
1918                 /* If we pass -1, set the mode with the currently bound fb */
1919                 if (crtc_req->fb_id == -1) {
1920                         if (!crtc->fb) {
1921                                 DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
1922                                 ret = -EINVAL;
1923                                 goto out;
1924                         }
1925                         fb = crtc->fb;
1926                 } else {
1927                         obj = drm_mode_object_find(dev, crtc_req->fb_id,
1928                                                    DRM_MODE_OBJECT_FB);
1929                         if (!obj) {
1930                                 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1931                                                 crtc_req->fb_id);
1932                                 ret = -EINVAL;
1933                                 goto out;
1934                         }
1935                         fb = obj_to_fb(obj);
1936                 }
1937
1938                 mode = drm_mode_create(dev);
1939                 if (!mode) {
1940                         ret = -ENOMEM;
1941                         goto out;
1942                 }
1943
1944                 ret = drm_crtc_convert_umode(mode, &crtc_req->mode);
1945                 if (ret) {
1946                         DRM_DEBUG_KMS("Invalid mode\n");
1947                         goto out;
1948                 }
1949
1950                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1951
1952                 hdisplay = mode->hdisplay;
1953                 vdisplay = mode->vdisplay;
1954
1955                 if (crtc->invert_dimensions) {
1956                         int tmp;
1957                         tmp = vdisplay;
1958                         vdisplay = hdisplay;
1959                         hdisplay = tmp;
1960                 }
1961
1962                 if (hdisplay > fb->width ||
1963                     vdisplay > fb->height ||
1964                     crtc_req->x > fb->width - hdisplay ||
1965                     crtc_req->y > fb->height - vdisplay) {
1966                         DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
1967                                       fb->width, fb->height,
1968                                       hdisplay, vdisplay, crtc_req->x, crtc_req->y,
1969                                       crtc->invert_dimensions ? " (inverted)" : "");
1970                         ret = -ENOSPC;
1971                         goto out;
1972                 }
1973         }
1974
1975         if (crtc_req->count_connectors == 0 && mode) {
1976                 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1977                 ret = -EINVAL;
1978                 goto out;
1979         }
1980
1981         if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1982                 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1983                           crtc_req->count_connectors);
1984                 ret = -EINVAL;
1985                 goto out;
1986         }
1987
1988         if (crtc_req->count_connectors > 0) {
1989                 u32 out_id;
1990
1991                 /* Avoid unbounded kernel memory allocation */
1992                 if (crtc_req->count_connectors > config->num_connector) {
1993                         ret = -EINVAL;
1994                         goto out;
1995                 }
1996
1997                 connector_set = malloc(crtc_req->count_connectors *
1998                                         sizeof(struct drm_connector *),
1999                                         DRM_MEM_KMS, M_WAITOK);
2000                 if (!connector_set) {
2001                         ret = -ENOMEM;
2002                         goto out;
2003                 }
2004
2005                 for (i = 0; i < crtc_req->count_connectors; i++) {
2006                         set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
2007                         if (get_user(out_id, &set_connectors_ptr[i])) {
2008                                 ret = -EFAULT;
2009                                 goto out;
2010                         }
2011
2012                         obj = drm_mode_object_find(dev, out_id,
2013                                                    DRM_MODE_OBJECT_CONNECTOR);
2014                         if (!obj) {
2015                                 DRM_DEBUG_KMS("Connector id %d unknown\n",
2016                                                 out_id);
2017                                 ret = -EINVAL;
2018                                 goto out;
2019                         }
2020                         connector = obj_to_connector(obj);
2021                         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
2022                                         connector->base.id,
2023                                         drm_get_connector_name(connector));
2024
2025                         connector_set[i] = connector;
2026                 }
2027         }
2028
2029         set.crtc = crtc;
2030         set.x = crtc_req->x;
2031         set.y = crtc_req->y;
2032         set.mode = mode;
2033         set.connectors = connector_set;
2034         set.num_connectors = crtc_req->count_connectors;
2035         set.fb = fb;
2036         ret = crtc->funcs->set_config(&set);
2037
2038 out:
2039         free(connector_set, DRM_MEM_KMS);
2040         drm_mode_destroy(dev, mode);
2041         sx_xunlock(&dev->mode_config.mutex);
2042         return ret;
2043 }
2044
2045 int drm_mode_cursor_ioctl(struct drm_device *dev,
2046                         void *data, struct drm_file *file_priv)
2047 {
2048         struct drm_mode_cursor *req = data;
2049         struct drm_mode_object *obj;
2050         struct drm_crtc *crtc;
2051         int ret = 0;
2052
2053         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2054                 return -EINVAL;
2055
2056         if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
2057                 return -EINVAL;
2058
2059         sx_xlock(&dev->mode_config.mutex);
2060         obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
2061         if (!obj) {
2062                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
2063                 ret = -EINVAL;
2064                 goto out;
2065         }
2066         crtc = obj_to_crtc(obj);
2067
2068         if (req->flags & DRM_MODE_CURSOR_BO) {
2069                 if (!crtc->funcs->cursor_set) {
2070                         ret = -ENXIO;
2071                         goto out;
2072                 }
2073                 /* Turns off the cursor if handle is 0 */
2074                 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
2075                                               req->width, req->height);
2076         }
2077
2078         if (req->flags & DRM_MODE_CURSOR_MOVE) {
2079                 if (crtc->funcs->cursor_move) {
2080                         ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
2081                 } else {
2082                         ret = -EFAULT;
2083                         goto out;
2084                 }
2085         }
2086 out:
2087         sx_xunlock(&dev->mode_config.mutex);
2088         return ret;
2089 }
2090
2091 /* Original addfb only supported RGB formats, so figure out which one */
2092 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
2093 {
2094         uint32_t fmt;
2095
2096         switch (bpp) {
2097         case 8:
2098                 fmt = DRM_FORMAT_C8;
2099                 break;
2100         case 16:
2101                 if (depth == 15)
2102                         fmt = DRM_FORMAT_XRGB1555;
2103                 else
2104                         fmt = DRM_FORMAT_RGB565;
2105                 break;
2106         case 24:
2107                 fmt = DRM_FORMAT_RGB888;
2108                 break;
2109         case 32:
2110                 if (depth == 24)
2111                         fmt = DRM_FORMAT_XRGB8888;
2112                 else if (depth == 30)
2113                         fmt = DRM_FORMAT_XRGB2101010;
2114                 else
2115                         fmt = DRM_FORMAT_ARGB8888;
2116                 break;
2117         default:
2118                 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2119                 fmt = DRM_FORMAT_XRGB8888;
2120                 break;
2121         }
2122
2123         return fmt;
2124 }
2125 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2126
2127 /**
2128  * drm_mode_addfb - add an FB to the graphics configuration
2129  * @inode: inode from the ioctl
2130  * @filp: file * from the ioctl
2131  * @cmd: cmd from ioctl
2132  * @arg: arg from ioctl
2133  *
2134  * LOCKING:
2135  * Takes mode config lock.
2136  *
2137  * Add a new FB to the specified CRTC, given a user request.
2138  *
2139  * Called by the user via ioctl.
2140  *
2141  * RETURNS:
2142  * Zero on success, errno on failure.
2143  */
2144 int drm_mode_addfb(struct drm_device *dev,
2145                    void *data, struct drm_file *file_priv)
2146 {
2147         struct drm_mode_fb_cmd *or = data;
2148         struct drm_mode_fb_cmd2 r = {};
2149         struct drm_mode_config *config = &dev->mode_config;
2150         struct drm_framebuffer *fb;
2151         int ret = 0;
2152
2153         /* Use new struct with format internally */
2154         r.fb_id = or->fb_id;
2155         r.width = or->width;
2156         r.height = or->height;
2157         r.pitches[0] = or->pitch;
2158         r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2159         r.handles[0] = or->handle;
2160
2161         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2162                 return -EINVAL;
2163
2164         if ((config->min_width > r.width) || (r.width > config->max_width))
2165                 return -EINVAL;
2166
2167         if ((config->min_height > r.height) || (r.height > config->max_height))
2168                 return -EINVAL;
2169
2170         sx_xlock(&dev->mode_config.mutex);
2171
2172         /* TODO check buffer is sufficiently large */
2173         /* TODO setup destructor callback */
2174
2175         ret = dev->mode_config.funcs->fb_create(dev, file_priv, &r, &fb);
2176         if (ret != 0) {
2177                 DRM_DEBUG_KMS("could not create framebuffer\n");
2178                 goto out;
2179         }
2180
2181         or->fb_id = fb->base.id;
2182         list_add(&fb->filp_head, &file_priv->fbs);
2183         DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2184
2185 out:
2186         sx_xunlock(&dev->mode_config.mutex);
2187         return ret;
2188 }
2189
2190 static int format_check(const struct drm_mode_fb_cmd2 *r)
2191 {
2192         uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2193
2194         switch (format) {
2195         case DRM_FORMAT_C8:
2196         case DRM_FORMAT_RGB332:
2197         case DRM_FORMAT_BGR233:
2198         case DRM_FORMAT_XRGB4444:
2199         case DRM_FORMAT_XBGR4444:
2200         case DRM_FORMAT_RGBX4444:
2201         case DRM_FORMAT_BGRX4444:
2202         case DRM_FORMAT_ARGB4444:
2203         case DRM_FORMAT_ABGR4444:
2204         case DRM_FORMAT_RGBA4444:
2205         case DRM_FORMAT_BGRA4444:
2206         case DRM_FORMAT_XRGB1555:
2207         case DRM_FORMAT_XBGR1555:
2208         case DRM_FORMAT_RGBX5551:
2209         case DRM_FORMAT_BGRX5551:
2210         case DRM_FORMAT_ARGB1555:
2211         case DRM_FORMAT_ABGR1555:
2212         case DRM_FORMAT_RGBA5551:
2213         case DRM_FORMAT_BGRA5551:
2214         case DRM_FORMAT_RGB565:
2215         case DRM_FORMAT_BGR565:
2216         case DRM_FORMAT_RGB888:
2217         case DRM_FORMAT_BGR888:
2218         case DRM_FORMAT_XRGB8888:
2219         case DRM_FORMAT_XBGR8888:
2220         case DRM_FORMAT_RGBX8888:
2221         case DRM_FORMAT_BGRX8888:
2222         case DRM_FORMAT_ARGB8888:
2223         case DRM_FORMAT_ABGR8888:
2224         case DRM_FORMAT_RGBA8888:
2225         case DRM_FORMAT_BGRA8888:
2226         case DRM_FORMAT_XRGB2101010:
2227         case DRM_FORMAT_XBGR2101010:
2228         case DRM_FORMAT_RGBX1010102:
2229         case DRM_FORMAT_BGRX1010102:
2230         case DRM_FORMAT_ARGB2101010:
2231         case DRM_FORMAT_ABGR2101010:
2232         case DRM_FORMAT_RGBA1010102:
2233         case DRM_FORMAT_BGRA1010102:
2234         case DRM_FORMAT_YUYV:
2235         case DRM_FORMAT_YVYU:
2236         case DRM_FORMAT_UYVY:
2237         case DRM_FORMAT_VYUY:
2238         case DRM_FORMAT_AYUV:
2239         case DRM_FORMAT_NV12:
2240         case DRM_FORMAT_NV21:
2241         case DRM_FORMAT_NV16:
2242         case DRM_FORMAT_NV61:
2243         case DRM_FORMAT_NV24:
2244         case DRM_FORMAT_NV42:
2245         case DRM_FORMAT_YUV410:
2246         case DRM_FORMAT_YVU410:
2247         case DRM_FORMAT_YUV411:
2248         case DRM_FORMAT_YVU411:
2249         case DRM_FORMAT_YUV420:
2250         case DRM_FORMAT_YVU420:
2251         case DRM_FORMAT_YUV422:
2252         case DRM_FORMAT_YVU422:
2253         case DRM_FORMAT_YUV444:
2254         case DRM_FORMAT_YVU444:
2255                 return 0;
2256         default:
2257                 return -EINVAL;
2258         }
2259 }
2260
2261 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
2262 {
2263         int ret, hsub, vsub, num_planes, i;
2264
2265         ret = format_check(r);
2266         if (ret) {
2267                 DRM_DEBUG_KMS("bad framebuffer format 0x%08x\n", r->pixel_format);
2268                 return ret;
2269         }
2270
2271         hsub = drm_format_horz_chroma_subsampling(r->pixel_format);
2272         vsub = drm_format_vert_chroma_subsampling(r->pixel_format);
2273         num_planes = drm_format_num_planes(r->pixel_format);
2274
2275         if (r->width == 0 || r->width % hsub) {
2276                 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height);
2277                 return -EINVAL;
2278         }
2279
2280         if (r->height == 0 || r->height % vsub) {
2281                 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height);
2282                 return -EINVAL;
2283         }
2284
2285         for (i = 0; i < num_planes; i++) {
2286                 unsigned int width = r->width / (i != 0 ? hsub : 1);
2287                 unsigned int height = r->height / (i != 0 ? vsub : 1);
2288                 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i);
2289
2290                 if (!r->handles[i]) {
2291                         DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i);
2292                         return -EINVAL;
2293                 }
2294
2295                 if ((uint64_t) width * cpp > UINT_MAX)
2296                         return -ERANGE;
2297
2298                 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX)
2299                         return -ERANGE;
2300
2301                 if (r->pitches[i] < width * cpp) {
2302                         DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
2303                         return -EINVAL;
2304                 }
2305         }
2306
2307         return 0;
2308 }
2309
2310 /**
2311  * drm_mode_addfb2 - add an FB to the graphics configuration
2312  * @inode: inode from the ioctl
2313  * @filp: file * from the ioctl
2314  * @cmd: cmd from ioctl
2315  * @arg: arg from ioctl
2316  *
2317  * LOCKING:
2318  * Takes mode config lock.
2319  *
2320  * Add a new FB to the specified CRTC, given a user request with format.
2321  *
2322  * Called by the user via ioctl.
2323  *
2324  * RETURNS:
2325  * Zero on success, errno on failure.
2326  */
2327 int drm_mode_addfb2(struct drm_device *dev,
2328                     void *data, struct drm_file *file_priv)
2329 {
2330         struct drm_mode_fb_cmd2 *r = data;
2331         struct drm_mode_config *config = &dev->mode_config;
2332         struct drm_framebuffer *fb;
2333         int ret;
2334
2335         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2336                 return -EINVAL;
2337
2338         if (r->flags & ~DRM_MODE_FB_INTERLACED) {
2339                 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
2340                 return -EINVAL;
2341         }
2342
2343         if ((config->min_width > r->width) || (r->width > config->max_width)) {
2344                 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n",
2345                           r->width, config->min_width, config->max_width);
2346                 return -EINVAL;
2347         }
2348         if ((config->min_height > r->height) || (r->height > config->max_height)) {
2349                 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n",
2350                           r->height, config->min_height, config->max_height);
2351                 return -EINVAL;
2352         }
2353
2354         ret = framebuffer_check(r);
2355         if (ret)
2356                 return ret;
2357
2358         sx_xlock(&dev->mode_config.mutex);
2359
2360         ret = dev->mode_config.funcs->fb_create(dev, file_priv, r, &fb);
2361         if (ret != 0) {
2362                 DRM_DEBUG_KMS("could not create framebuffer\n");
2363                 goto out;
2364         }
2365
2366         r->fb_id = fb->base.id;
2367         list_add(&fb->filp_head, &file_priv->fbs);
2368         DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2369
2370 out:
2371         sx_xunlock(&dev->mode_config.mutex);
2372         return ret;
2373 }
2374
2375 /**
2376  * drm_mode_rmfb - remove an FB from the configuration
2377  * @inode: inode from the ioctl
2378  * @filp: file * from the ioctl
2379  * @cmd: cmd from ioctl
2380  * @arg: arg from ioctl
2381  *
2382  * LOCKING:
2383  * Takes mode config lock.
2384  *
2385  * Remove the FB specified by the user.
2386  *
2387  * Called by the user via ioctl.
2388  *
2389  * RETURNS:
2390  * Zero on success, errno on failure.
2391  */
2392 int drm_mode_rmfb(struct drm_device *dev,
2393                    void *data, struct drm_file *file_priv)
2394 {
2395         struct drm_mode_object *obj;
2396         struct drm_framebuffer *fb = NULL;
2397         struct drm_framebuffer *fbl = NULL;
2398         uint32_t *id = data;
2399         int ret = 0;
2400         int found = 0;
2401
2402         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2403                 return -EINVAL;
2404
2405         sx_xlock(&dev->mode_config.mutex);
2406         obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
2407         /* TODO check that we really get a framebuffer back. */
2408         if (!obj) {
2409                 ret = -EINVAL;
2410                 goto out;
2411         }
2412         fb = obj_to_fb(obj);
2413
2414         list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2415                 if (fb == fbl)
2416                         found = 1;
2417
2418         if (!found) {
2419                 ret = -EINVAL;
2420                 goto out;
2421         }
2422
2423         drm_framebuffer_remove(fb);
2424
2425 out:
2426         sx_xunlock(&dev->mode_config.mutex);
2427         return ret;
2428 }
2429
2430 /**
2431  * drm_mode_getfb - get FB info
2432  * @inode: inode from the ioctl
2433  * @filp: file * from the ioctl
2434  * @cmd: cmd from ioctl
2435  * @arg: arg from ioctl
2436  *
2437  * LOCKING:
2438  * Takes mode config lock.
2439  *
2440  * Lookup the FB given its ID and return info about it.
2441  *
2442  * Called by the user via ioctl.
2443  *
2444  * RETURNS:
2445  * Zero on success, errno on failure.
2446  */
2447 int drm_mode_getfb(struct drm_device *dev,
2448                    void *data, struct drm_file *file_priv)
2449 {
2450         struct drm_mode_fb_cmd *r = data;
2451         struct drm_mode_object *obj;
2452         struct drm_framebuffer *fb;
2453         int ret = 0;
2454
2455         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2456                 return -EINVAL;
2457
2458         sx_xlock(&dev->mode_config.mutex);
2459         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2460         if (!obj) {
2461                 ret = -EINVAL;
2462                 goto out;
2463         }
2464         fb = obj_to_fb(obj);
2465
2466         r->height = fb->height;
2467         r->width = fb->width;
2468         r->depth = fb->depth;
2469         r->bpp = fb->bits_per_pixel;
2470         r->pitch = fb->pitches[0];
2471         r->handle = 0;
2472         fb->funcs->create_handle(fb, file_priv, &r->handle);
2473
2474 out:
2475         sx_xunlock(&dev->mode_config.mutex);
2476         return ret;
2477 }
2478
2479 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2480                            void *data, struct drm_file *file_priv)
2481 {
2482         struct drm_clip_rect __user *clips_ptr;
2483         struct drm_clip_rect *clips = NULL;
2484         struct drm_mode_fb_dirty_cmd *r = data;
2485         struct drm_mode_object *obj;
2486         struct drm_framebuffer *fb;
2487         unsigned flags;
2488         int num_clips;
2489         int ret;
2490
2491         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2492                 return -EINVAL;
2493
2494         sx_xlock(&dev->mode_config.mutex);
2495         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2496         if (!obj) {
2497                 ret = -EINVAL;
2498                 goto out_err1;
2499         }
2500         fb = obj_to_fb(obj);
2501
2502         num_clips = r->num_clips;
2503         clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2504
2505         if (!num_clips != !clips_ptr) {
2506                 ret = -EINVAL;
2507                 goto out_err1;
2508         }
2509
2510         flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2511
2512         /* If userspace annotates copy, clips must come in pairs */
2513         if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2514                 ret = -EINVAL;
2515                 goto out_err1;
2516         }
2517
2518         if (num_clips && clips_ptr) {
2519                 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2520                         ret = -EINVAL;
2521                         goto out_err1;
2522                 }
2523                 clips = malloc(num_clips * sizeof(*clips), DRM_MEM_KMS,
2524                     M_WAITOK | M_ZERO);
2525                 if (!clips) {
2526                         ret = -ENOMEM;
2527                         goto out_err1;
2528                 }
2529
2530                 ret = copy_from_user(clips, clips_ptr,
2531                                      num_clips * sizeof(*clips));
2532                 if (ret) {
2533                         ret = -EFAULT;
2534                         goto out_err2;
2535                 }
2536         }
2537
2538         if (fb->funcs->dirty) {
2539                 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
2540                                        clips, num_clips);
2541         } else {
2542                 ret = -ENOSYS;
2543                 goto out_err2;
2544         }
2545
2546 out_err2:
2547         free(clips, DRM_MEM_KMS);
2548 out_err1:
2549         sx_xunlock(&dev->mode_config.mutex);
2550         return ret;
2551 }
2552
2553
2554 /**
2555  * drm_fb_release - remove and free the FBs on this file
2556  * @filp: file * from the ioctl
2557  *
2558  * LOCKING:
2559  * Takes mode config lock.
2560  *
2561  * Destroy all the FBs associated with @filp.
2562  *
2563  * Called by the user via ioctl.
2564  *
2565  * RETURNS:
2566  * Zero on success, errno on failure.
2567  */
2568 void drm_fb_release(struct drm_file *priv)
2569 {
2570         struct drm_device *dev = priv->minor->dev;
2571         struct drm_framebuffer *fb, *tfb;
2572
2573         sx_xlock(&dev->mode_config.mutex);
2574         list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2575                 drm_framebuffer_remove(fb);
2576         }
2577         sx_xunlock(&dev->mode_config.mutex);
2578 }
2579
2580 /**
2581  * drm_mode_attachmode - add a mode to the user mode list
2582  * @dev: DRM device
2583  * @connector: connector to add the mode to
2584  * @mode: mode to add
2585  *
2586  * Add @mode to @connector's user mode list.
2587  */
2588 static void drm_mode_attachmode(struct drm_device *dev,
2589                                 struct drm_connector *connector,
2590                                 struct drm_display_mode *mode)
2591 {
2592         list_add_tail(&mode->head, &connector->user_modes);
2593 }
2594
2595 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
2596                              const struct drm_display_mode *mode)
2597 {
2598         struct drm_connector *connector;
2599         int ret = 0;
2600         struct drm_display_mode *dup_mode, *next;
2601         DRM_LIST_HEAD(list);
2602
2603         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2604                 if (!connector->encoder)
2605                         continue;
2606                 if (connector->encoder->crtc == crtc) {
2607                         dup_mode = drm_mode_duplicate(dev, mode);
2608                         if (!dup_mode) {
2609                                 ret = -ENOMEM;
2610                                 goto out;
2611                         }
2612                         list_add_tail(&dup_mode->head, &list);
2613                 }
2614         }
2615
2616         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2617                 if (!connector->encoder)
2618                         continue;
2619                 if (connector->encoder->crtc == crtc)
2620                         list_move_tail(list.next, &connector->user_modes);
2621         }
2622
2623         MPASS(!list_empty(&list));
2624
2625  out:
2626         list_for_each_entry_safe(dup_mode, next, &list, head)
2627                 drm_mode_destroy(dev, dup_mode);
2628
2629         return ret;
2630 }
2631 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
2632
2633 static int drm_mode_detachmode(struct drm_device *dev,
2634                                struct drm_connector *connector,
2635                                struct drm_display_mode *mode)
2636 {
2637         int found = 0;
2638         int ret = 0;
2639         struct drm_display_mode *match_mode, *t;
2640
2641         list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
2642                 if (drm_mode_equal(match_mode, mode)) {
2643                         list_del(&match_mode->head);
2644                         drm_mode_destroy(dev, match_mode);
2645                         found = 1;
2646                         break;
2647                 }
2648         }
2649
2650         if (!found)
2651                 ret = -EINVAL;
2652
2653         return ret;
2654 }
2655
2656 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2657 {
2658         struct drm_connector *connector;
2659
2660         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2661                 drm_mode_detachmode(dev, connector, mode);
2662         }
2663         return 0;
2664 }
2665 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2666
2667 /**
2668  * drm_fb_attachmode - Attach a user mode to an connector
2669  * @inode: inode from the ioctl
2670  * @filp: file * from the ioctl
2671  * @cmd: cmd from ioctl
2672  * @arg: arg from ioctl
2673  *
2674  * This attaches a user specified mode to an connector.
2675  * Called by the user via ioctl.
2676  *
2677  * RETURNS:
2678  * Zero on success, errno on failure.
2679  */
2680 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2681                               void *data, struct drm_file *file_priv)
2682 {
2683         struct drm_mode_mode_cmd *mode_cmd = data;
2684         struct drm_connector *connector;
2685         struct drm_display_mode *mode;
2686         struct drm_mode_object *obj;
2687         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2688         int ret;
2689
2690         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2691                 return -EINVAL;
2692
2693         sx_xlock(&dev->mode_config.mutex);
2694
2695         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2696         if (!obj) {
2697                 ret = -EINVAL;
2698                 goto out;
2699         }
2700         connector = obj_to_connector(obj);
2701
2702         mode = drm_mode_create(dev);
2703         if (!mode) {
2704                 ret = -ENOMEM;
2705                 goto out;
2706         }
2707
2708         ret = drm_crtc_convert_umode(mode, umode);
2709         if (ret) {
2710                 DRM_DEBUG_KMS("Invalid mode\n");
2711                 drm_mode_destroy(dev, mode);
2712                 goto out;
2713         }
2714
2715         drm_mode_attachmode(dev, connector, mode);
2716 out:
2717         sx_xunlock(&dev->mode_config.mutex);
2718         return ret;
2719 }
2720
2721
2722 /**
2723  * drm_fb_detachmode - Detach a user specified mode from an connector
2724  * @inode: inode from the ioctl
2725  * @filp: file * from the ioctl
2726  * @cmd: cmd from ioctl
2727  * @arg: arg from ioctl
2728  *
2729  * Called by the user via ioctl.
2730  *
2731  * RETURNS:
2732  * Zero on success, errno on failure.
2733  */
2734 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2735                               void *data, struct drm_file *file_priv)
2736 {
2737         struct drm_mode_object *obj;
2738         struct drm_mode_mode_cmd *mode_cmd = data;
2739         struct drm_connector *connector;
2740         struct drm_display_mode mode;
2741         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2742         int ret;
2743
2744         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2745                 return -EINVAL;
2746
2747         sx_xlock(&dev->mode_config.mutex);
2748
2749         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2750         if (!obj) {
2751                 ret = -EINVAL;
2752                 goto out;
2753         }
2754         connector = obj_to_connector(obj);
2755
2756         ret = drm_crtc_convert_umode(&mode, umode);
2757         if (ret) {
2758                 DRM_DEBUG_KMS("Invalid mode\n");
2759                 goto out;
2760         }
2761
2762         ret = drm_mode_detachmode(dev, connector, &mode);
2763 out:
2764         sx_xunlock(&dev->mode_config.mutex);
2765         return ret;
2766 }
2767
2768 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2769                                          const char *name, int num_values)
2770 {
2771         struct drm_property *property = NULL;
2772         int ret;
2773
2774         property = malloc(sizeof(struct drm_property), DRM_MEM_KMS,
2775             M_WAITOK | M_ZERO);
2776         if (!property)
2777                 return NULL;
2778
2779         if (num_values) {
2780                 property->values = malloc(sizeof(uint64_t)*num_values, DRM_MEM_KMS,
2781                     M_WAITOK | M_ZERO);
2782                 if (!property->values)
2783                         goto fail;
2784         }
2785
2786         ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2787         if (ret)
2788                 goto fail;
2789
2790         property->flags = flags;
2791         property->num_values = num_values;
2792         INIT_LIST_HEAD(&property->enum_blob_list);
2793
2794         if (name) {
2795                 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2796                 property->name[DRM_PROP_NAME_LEN-1] = '\0';
2797         }
2798
2799         list_add_tail(&property->head, &dev->mode_config.property_list);
2800         return property;
2801 fail:
2802         free(property->values, DRM_MEM_KMS);
2803         free(property, DRM_MEM_KMS);
2804         return NULL;
2805 }
2806 EXPORT_SYMBOL(drm_property_create);
2807
2808 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
2809                                          const char *name,
2810                                          const struct drm_prop_enum_list *props,
2811                                          int num_values)
2812 {
2813         struct drm_property *property;
2814         int i, ret;
2815
2816         flags |= DRM_MODE_PROP_ENUM;
2817
2818         property = drm_property_create(dev, flags, name, num_values);
2819         if (!property)
2820                 return NULL;
2821
2822         for (i = 0; i < num_values; i++) {
2823                 ret = drm_property_add_enum(property, i,
2824                                       props[i].type,
2825                                       props[i].name);
2826                 if (ret) {
2827                         drm_property_destroy(dev, property);
2828                         return NULL;
2829                 }
2830         }
2831
2832         return property;
2833 }
2834 EXPORT_SYMBOL(drm_property_create_enum);
2835
2836 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
2837                                          int flags, const char *name,
2838                                          const struct drm_prop_enum_list *props,
2839                                          int num_values)
2840 {
2841         struct drm_property *property;
2842         int i, ret;
2843
2844         flags |= DRM_MODE_PROP_BITMASK;
2845
2846         property = drm_property_create(dev, flags, name, num_values);
2847         if (!property)
2848                 return NULL;
2849
2850         for (i = 0; i < num_values; i++) {
2851                 ret = drm_property_add_enum(property, i,
2852                                       props[i].type,
2853                                       props[i].name);
2854                 if (ret) {
2855                         drm_property_destroy(dev, property);
2856                         return NULL;
2857                 }
2858         }
2859
2860         return property;
2861 }
2862 EXPORT_SYMBOL(drm_property_create_bitmask);
2863
2864 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
2865                                          const char *name,
2866                                          uint64_t min, uint64_t max)
2867 {
2868         struct drm_property *property;
2869
2870         flags |= DRM_MODE_PROP_RANGE;
2871
2872         property = drm_property_create(dev, flags, name, 2);
2873         if (!property)
2874                 return NULL;
2875
2876         property->values[0] = min;
2877         property->values[1] = max;
2878
2879         return property;
2880 }
2881 EXPORT_SYMBOL(drm_property_create_range);
2882
2883 int drm_property_add_enum(struct drm_property *property, int index,
2884                           uint64_t value, const char *name)
2885 {
2886         struct drm_property_enum *prop_enum;
2887
2888         if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
2889                 return -EINVAL;
2890
2891         /*
2892          * Bitmask enum properties have the additional constraint of values
2893          * from 0 to 63
2894          */
2895         if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63))
2896                 return -EINVAL;
2897
2898         if (!list_empty(&property->enum_blob_list)) {
2899                 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2900                         if (prop_enum->value == value) {
2901                                 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2902                                 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2903                                 return 0;
2904                         }
2905                 }
2906         }
2907
2908         prop_enum = malloc(sizeof(struct drm_property_enum), DRM_MEM_KMS,
2909             M_WAITOK | M_ZERO);
2910         if (!prop_enum)
2911                 return -ENOMEM;
2912
2913         strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2914         prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2915         prop_enum->value = value;
2916
2917         property->values[index] = value;
2918         list_add_tail(&prop_enum->head, &property->enum_blob_list);
2919         return 0;
2920 }
2921 EXPORT_SYMBOL(drm_property_add_enum);
2922
2923 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2924 {
2925         struct drm_property_enum *prop_enum, *pt;
2926
2927         list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2928                 list_del(&prop_enum->head);
2929                 free(prop_enum, DRM_MEM_KMS);
2930         }
2931
2932         if (property->num_values)
2933                 free(property->values, DRM_MEM_KMS);
2934         drm_mode_object_put(dev, &property->base);
2935         list_del(&property->head);
2936         free(property, DRM_MEM_KMS);
2937 }
2938 EXPORT_SYMBOL(drm_property_destroy);
2939
2940 void drm_object_attach_property(struct drm_mode_object *obj,
2941                                 struct drm_property *property,
2942                                 uint64_t init_val)
2943 {
2944         int count = obj->properties->count;
2945
2946         if (count == DRM_OBJECT_MAX_PROPERTY) {
2947                 DRM_WARNING("Failed to attach object property (type: 0x%x). Please "
2948                         "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
2949                         "you see this message on the same object type.\n",
2950                         obj->type);
2951                 return;
2952         }
2953
2954         obj->properties->ids[count] = property->base.id;
2955         obj->properties->values[count] = init_val;
2956         obj->properties->count++;
2957 }
2958 EXPORT_SYMBOL(drm_object_attach_property);
2959
2960 int drm_object_property_set_value(struct drm_mode_object *obj,
2961                                   struct drm_property *property, uint64_t val)
2962 {
2963         int i;
2964
2965         for (i = 0; i < obj->properties->count; i++) {
2966                 if (obj->properties->ids[i] == property->base.id) {
2967                         obj->properties->values[i] = val;
2968                         return 0;
2969                 }
2970         }
2971
2972         return -EINVAL;
2973 }
2974 EXPORT_SYMBOL(drm_object_property_set_value);
2975
2976 int drm_object_property_get_value(struct drm_mode_object *obj,
2977                                   struct drm_property *property, uint64_t *val)
2978 {
2979         int i;
2980
2981         for (i = 0; i < obj->properties->count; i++) {
2982                 if (obj->properties->ids[i] == property->base.id) {
2983                         *val = obj->properties->values[i];
2984                         return 0;
2985                 }
2986         }
2987
2988         return -EINVAL;
2989 }
2990 EXPORT_SYMBOL(drm_object_property_get_value);
2991
2992 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2993                                void *data, struct drm_file *file_priv)
2994 {
2995         struct drm_mode_object *obj;
2996         struct drm_mode_get_property *out_resp = data;
2997         struct drm_property *property;
2998         int enum_count = 0;
2999         int blob_count = 0;
3000         int value_count = 0;
3001         int ret = 0, i;
3002         int copied;
3003         struct drm_property_enum *prop_enum;
3004         struct drm_mode_property_enum __user *enum_ptr;
3005         struct drm_property_blob *prop_blob;
3006         uint32_t __user *blob_id_ptr;
3007         uint64_t __user *values_ptr;
3008         uint32_t __user *blob_length_ptr;
3009
3010         if (!drm_core_check_feature(dev, DRIVER_MODESET))
3011                 return -EINVAL;
3012
3013         sx_xlock(&dev->mode_config.mutex);
3014         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
3015         if (!obj) {
3016                 ret = -EINVAL;
3017                 goto done;
3018         }
3019         property = obj_to_property(obj);
3020
3021         if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3022                 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
3023                         enum_count++;
3024         } else if (property->flags & DRM_MODE_PROP_BLOB) {
3025                 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
3026                         blob_count++;
3027         }
3028
3029         value_count = property->num_values;
3030
3031         strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
3032         out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
3033         out_resp->flags = property->flags;
3034
3035         if ((out_resp->count_values >= value_count) && value_count) {
3036                 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
3037                 for (i = 0; i < value_count; i++) {
3038                         if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
3039                                 ret = -EFAULT;
3040                                 goto done;
3041                         }
3042                 }
3043         }
3044         out_resp->count_values = value_count;
3045
3046         if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
3047                 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
3048                         copied = 0;
3049                         enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
3050                         list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
3051
3052                                 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
3053                                         ret = -EFAULT;
3054                                         goto done;
3055                                 }
3056
3057                                 if (copy_to_user(&enum_ptr[copied].name,
3058                                                  &prop_enum->name, DRM_PROP_NAME_LEN)) {
3059                                         ret = -EFAULT;
3060                                         goto done;
3061                                 }
3062                                 copied++;
3063                         }
3064                 }
3065                 out_resp->count_enum_blobs = enum_count;
3066         }
3067
3068         if (property->flags & DRM_MODE_PROP_BLOB) {
3069                 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
3070                         copied = 0;
3071                         blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
3072                         blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
3073
3074                         list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
3075                                 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
3076                                         ret = -EFAULT;
3077                                         goto done;
3078                                 }
3079
3080                                 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
3081                                         ret = -EFAULT;
3082                                         goto done;
3083                                 }
3084
3085                                 copied++;
3086                         }
3087                 }
3088                 out_resp->count_enum_blobs = blob_count;
3089         }
3090 done:
3091         sx_xunlock(&dev->mode_config.mutex);
3092         return ret;
3093 }
3094
3095 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
3096                                                           void *data)
3097 {
3098         struct drm_property_blob *blob;
3099         int ret;
3100
3101         if (!length || !data)
3102                 return NULL;
3103
3104         blob = malloc(sizeof(struct drm_property_blob)+length, DRM_MEM_KMS,
3105             M_WAITOK | M_ZERO);
3106         if (!blob)
3107                 return NULL;
3108
3109         ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
3110         if (ret) {
3111                 free(blob, DRM_MEM_KMS);
3112                 return NULL;
3113         }
3114
3115         blob->length = length;
3116
3117         memcpy(blob->data, data, length);
3118
3119         list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
3120         return blob;
3121 }
3122
3123 static void drm_property_destroy_blob(struct drm_device *dev,
3124                                struct drm_property_blob *blob)
3125 {
3126         drm_mode_object_put(dev, &blob->base);
3127         list_del(&blob->head);
3128         free(blob, DRM_MEM_KMS);
3129 }
3130
3131 int drm_mode_getblob_ioctl(struct drm_device *dev,
3132                            void *data, struct drm_file *file_priv)
3133 {
3134         struct drm_mode_object *obj;
3135         struct drm_mode_get_blob *out_resp = data;
3136         struct drm_property_blob *blob;
3137         int ret = 0;
3138         void __user *blob_ptr;
3139
3140         if (!drm_core_check_feature(dev, DRIVER_MODESET))
3141                 return -EINVAL;
3142
3143         sx_xlock(&dev->mode_config.mutex);
3144         obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
3145         if (!obj) {
3146                 ret = -EINVAL;
3147                 goto done;
3148         }
3149         blob = obj_to_blob(obj);
3150
3151         if (out_resp->length == blob->length) {
3152                 blob_ptr = (void __user *)(unsigned long)out_resp->data;
3153                 if (copy_to_user(blob_ptr, blob->data, blob->length)){
3154                         ret = -EFAULT;
3155                         goto done;
3156                 }
3157         }
3158         out_resp->length = blob->length;
3159
3160 done:
3161         sx_xunlock(&dev->mode_config.mutex);
3162         return ret;
3163 }
3164
3165 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
3166                                             struct edid *edid)
3167 {
3168         struct drm_device *dev = connector->dev;
3169         int ret, size;
3170
3171         if (connector->edid_blob_ptr)
3172                 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
3173
3174         /* Delete edid, when there is none. */
3175         if (!edid) {
3176                 connector->edid_blob_ptr = NULL;
3177                 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
3178                 return ret;
3179         }
3180
3181         size = EDID_LENGTH * (1 + edid->extensions);
3182         connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
3183                                                             size, edid);
3184         if (!connector->edid_blob_ptr)
3185                 return -EINVAL;
3186
3187         ret = drm_object_property_set_value(&connector->base,
3188                                                dev->mode_config.edid_property,
3189                                                connector->edid_blob_ptr->base.id);
3190
3191         return ret;
3192 }
3193 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
3194
3195 static bool drm_property_change_is_valid(struct drm_property *property,
3196                                          uint64_t value)
3197 {
3198         if (property->flags & DRM_MODE_PROP_IMMUTABLE)
3199                 return false;
3200         if (property->flags & DRM_MODE_PROP_RANGE) {
3201                 if (value < property->values[0] || value > property->values[1])
3202                         return false;
3203                 return true;
3204         } else if (property->flags & DRM_MODE_PROP_BITMASK) {
3205                 int i;
3206                 uint64_t valid_mask = 0;
3207                 for (i = 0; i < property->num_values; i++)
3208                         valid_mask |= (1ULL << property->values[i]);
3209                 return !(value & ~valid_mask);
3210         } else if (property->flags & DRM_MODE_PROP_BLOB) {
3211                 /* Only the driver knows */
3212                 return true;
3213         } else {
3214                 int i;
3215                 for (i = 0; i < property->num_values; i++)
3216                         if (property->values[i] == value)
3217                                 return true;
3218                 return false;
3219         }
3220 }
3221
3222 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
3223                                        void *data, struct drm_file *file_priv)
3224 {
3225         struct drm_mode_connector_set_property *conn_set_prop = data;
3226         struct drm_mode_obj_set_property obj_set_prop = {
3227                 .value = conn_set_prop->value,
3228                 .prop_id = conn_set_prop->prop_id,
3229                 .obj_id = conn_set_prop->connector_id,
3230                 .obj_type = DRM_MODE_OBJECT_CONNECTOR
3231         };
3232
3233         /* It does all the locking and checking we need */
3234         return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
3235 }
3236
3237 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
3238                                            struct drm_property *property,
3239                                            uint64_t value)
3240 {
3241         int ret = -EINVAL;
3242         struct drm_connector *connector = obj_to_connector(obj);
3243
3244         /* Do DPMS ourselves */
3245         if (property == connector->dev->mode_config.dpms_property) {
3246                 if (connector->funcs->dpms)
3247                         (*connector->funcs->dpms)(connector, (int)value);
3248                 ret = 0;
3249         } else if (connector->funcs->set_property)
3250                 ret = connector->funcs->set_property(connector, property, value);
3251
3252         /* store the property value if successful */
3253         if (!ret)
3254                 drm_object_property_set_value(&connector->base, property, value);
3255         return ret;
3256 }
3257
3258 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
3259                                       struct drm_property *property,
3260                                       uint64_t value)
3261 {
3262         int ret = -EINVAL;
3263         struct drm_crtc *crtc = obj_to_crtc(obj);
3264
3265         if (crtc->funcs->set_property)
3266                 ret = crtc->funcs->set_property(crtc, property, value);
3267         if (!ret)
3268                 drm_object_property_set_value(obj, property, value);
3269
3270         return ret;
3271 }
3272
3273 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
3274                                       struct drm_property *property,
3275                                       uint64_t value)
3276 {
3277         int ret = -EINVAL;
3278         struct drm_plane *plane = obj_to_plane(obj);
3279
3280         if (plane->funcs->set_property)
3281                 ret = plane->funcs->set_property(plane, property, value);
3282         if (!ret)
3283                 drm_object_property_set_value(obj, property, value);
3284
3285         return ret;
3286 }
3287
3288 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
3289                                       struct drm_file *file_priv)
3290 {
3291         struct drm_mode_obj_get_properties *arg = data;
3292         struct drm_mode_object *obj;
3293         int ret = 0;
3294         int i;
3295         int copied = 0;
3296         int props_count = 0;
3297         uint32_t __user *props_ptr;
3298         uint64_t __user *prop_values_ptr;
3299
3300         if (!drm_core_check_feature(dev, DRIVER_MODESET))
3301                 return -EINVAL;
3302
3303         sx_xlock(&dev->mode_config.mutex);
3304
3305         obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3306         if (!obj) {
3307                 ret = -EINVAL;
3308                 goto out;
3309         }
3310         if (!obj->properties) {
3311                 ret = -EINVAL;
3312                 goto out;
3313         }
3314
3315         props_count = obj->properties->count;
3316
3317         /* This ioctl is called twice, once to determine how much space is
3318          * needed, and the 2nd time to fill it. */
3319         if ((arg->count_props >= props_count) && props_count) {
3320                 copied = 0;
3321                 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
3322                 prop_values_ptr = (uint64_t __user *)(unsigned long)
3323                                   (arg->prop_values_ptr);
3324                 for (i = 0; i < props_count; i++) {
3325                         if (put_user(obj->properties->ids[i],
3326                                      props_ptr + copied)) {
3327                                 ret = -EFAULT;
3328                                 goto out;
3329                         }
3330                         if (put_user(obj->properties->values[i],
3331                                      prop_values_ptr + copied)) {
3332                                 ret = -EFAULT;
3333                                 goto out;
3334                         }
3335                         copied++;
3336                 }
3337         }
3338         arg->count_props = props_count;
3339 out:
3340         sx_xunlock(&dev->mode_config.mutex);
3341         return ret;
3342 }
3343
3344 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
3345                                     struct drm_file *file_priv)
3346 {
3347         struct drm_mode_obj_set_property *arg = data;
3348         struct drm_mode_object *arg_obj;
3349         struct drm_mode_object *prop_obj;
3350         struct drm_property *property;
3351         int ret = -EINVAL;
3352         int i;
3353
3354         if (!drm_core_check_feature(dev, DRIVER_MODESET))
3355                 return -EINVAL;
3356
3357         sx_xlock(&dev->mode_config.mutex);
3358
3359         arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
3360         if (!arg_obj)
3361                 goto out;
3362         if (!arg_obj->properties)
3363                 goto out;
3364
3365         for (i = 0; i < arg_obj->properties->count; i++)
3366                 if (arg_obj->properties->ids[i] == arg->prop_id)
3367                         break;
3368
3369         if (i == arg_obj->properties->count)
3370                 goto out;
3371
3372         prop_obj = drm_mode_object_find(dev, arg->prop_id,
3373                                         DRM_MODE_OBJECT_PROPERTY);
3374         if (!prop_obj)
3375                 goto out;
3376         property = obj_to_property(prop_obj);
3377
3378         if (!drm_property_change_is_valid(property, arg->value))
3379                 goto out;
3380
3381         switch (arg_obj->type) {
3382         case DRM_MODE_OBJECT_CONNECTOR:
3383                 ret = drm_mode_connector_set_obj_prop(arg_obj, property,
3384                                                       arg->value);
3385                 break;
3386         case DRM_MODE_OBJECT_CRTC:
3387                 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
3388                 break;
3389         case DRM_MODE_OBJECT_PLANE:
3390                 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
3391                 break;
3392         }
3393
3394 out:
3395         sx_xunlock(&dev->mode_config.mutex);
3396         return ret;
3397 }
3398
3399 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
3400                                       struct drm_encoder *encoder)
3401 {
3402         int i;
3403
3404         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3405                 if (connector->encoder_ids[i] == 0) {
3406                         connector->encoder_ids[i] = encoder->base.id;
3407                         return 0;
3408                 }
3409         }
3410         return -ENOMEM;
3411 }
3412 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3413
3414 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
3415                                     struct drm_encoder *encoder)
3416 {
3417         int i;
3418         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3419                 if (connector->encoder_ids[i] == encoder->base.id) {
3420                         connector->encoder_ids[i] = 0;
3421                         if (connector->encoder == encoder)
3422                                 connector->encoder = NULL;
3423                         break;
3424                 }
3425         }
3426 }
3427 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
3428
3429 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3430                                   int gamma_size)
3431 {
3432         crtc->gamma_size = gamma_size;
3433
3434         crtc->gamma_store = malloc(gamma_size * sizeof(uint16_t) * 3,
3435             DRM_MEM_KMS, M_WAITOK | M_ZERO);
3436         if (!crtc->gamma_store) {
3437                 crtc->gamma_size = 0;
3438                 return -ENOMEM;
3439         }
3440
3441         return 0;
3442 }
3443 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3444
3445 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3446                              void *data, struct drm_file *file_priv)
3447 {
3448         struct drm_mode_crtc_lut *crtc_lut = data;
3449         struct drm_mode_object *obj;
3450         struct drm_crtc *crtc;
3451         void *r_base, *g_base, *b_base;
3452         int size;
3453         int ret = 0;
3454
3455         if (!drm_core_check_feature(dev, DRIVER_MODESET))
3456                 return -EINVAL;
3457
3458         sx_xlock(&dev->mode_config.mutex);
3459         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3460         if (!obj) {
3461                 ret = -EINVAL;
3462                 goto out;
3463         }
3464         crtc = obj_to_crtc(obj);
3465
3466         if (crtc->funcs->gamma_set == NULL) {
3467                 ret = -ENOSYS;
3468                 goto out;
3469         }
3470
3471         /* memcpy into gamma store */
3472         if (crtc_lut->gamma_size != crtc->gamma_size) {
3473                 ret = -EINVAL;
3474                 goto out;
3475         }
3476
3477         size = crtc_lut->gamma_size * (sizeof(uint16_t));
3478         r_base = crtc->gamma_store;
3479         if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
3480                 ret = -EFAULT;
3481                 goto out;
3482         }
3483
3484         g_base = (char *)r_base + size;
3485         if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
3486                 ret = -EFAULT;
3487                 goto out;
3488         }
3489
3490         b_base = (char *)g_base + size;
3491         if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
3492                 ret = -EFAULT;
3493                 goto out;
3494         }
3495
3496         crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
3497
3498 out:
3499         sx_xunlock(&dev->mode_config.mutex);
3500         return ret;
3501
3502 }
3503
3504 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
3505                              void *data, struct drm_file *file_priv)
3506 {
3507         struct drm_mode_crtc_lut *crtc_lut = data;
3508         struct drm_mode_object *obj;
3509         struct drm_crtc *crtc;
3510         void *r_base, *g_base, *b_base;
3511         int size;
3512         int ret = 0;
3513
3514         if (!drm_core_check_feature(dev, DRIVER_MODESET))
3515                 return -EINVAL;
3516
3517         sx_xlock(&dev->mode_config.mutex);
3518         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3519         if (!obj) {
3520                 ret = -EINVAL;
3521                 goto out;
3522         }
3523         crtc = obj_to_crtc(obj);
3524
3525         /* memcpy into gamma store */
3526         if (crtc_lut->gamma_size != crtc->gamma_size) {
3527                 ret = -EINVAL;
3528                 goto out;
3529         }
3530
3531         size = crtc_lut->gamma_size * (sizeof(uint16_t));
3532         r_base = crtc->gamma_store;
3533         if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
3534                 ret = -EFAULT;
3535                 goto out;
3536         }
3537
3538         g_base = (char *)r_base + size;
3539         if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
3540                 ret = -EFAULT;
3541                 goto out;
3542         }
3543
3544         b_base = (char *)g_base + size;
3545         if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
3546                 ret = -EFAULT;
3547                 goto out;
3548         }
3549 out:
3550         sx_xunlock(&dev->mode_config.mutex);
3551         return ret;
3552 }
3553
3554 static void
3555 free_vblank_event(void *arg)
3556 {
3557
3558         free(arg, DRM_MEM_KMS);
3559 }
3560
3561 int drm_mode_page_flip_ioctl(struct drm_device *dev,
3562                              void *data, struct drm_file *file_priv)
3563 {
3564         struct drm_mode_crtc_page_flip *page_flip = data;
3565         struct drm_mode_object *obj;
3566         struct drm_crtc *crtc;
3567         struct drm_framebuffer *fb;
3568         struct drm_pending_vblank_event *e = NULL;
3569 #ifdef __linux__
3570         unsigned long flags;
3571 #endif
3572         int hdisplay, vdisplay;
3573         int ret = -EINVAL;
3574
3575         if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
3576             page_flip->reserved != 0)
3577                 return -EINVAL;
3578
3579         sx_xlock(&dev->mode_config.mutex);
3580         obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
3581         if (!obj)
3582                 goto out;
3583         crtc = obj_to_crtc(obj);
3584
3585         if (crtc->fb == NULL) {
3586                 /* The framebuffer is currently unbound, presumably
3587                  * due to a hotplug event, that userspace has not
3588                  * yet discovered.
3589                  */
3590                 ret = -EBUSY;
3591                 goto out;
3592         }
3593
3594         if (crtc->funcs->page_flip == NULL)
3595                 goto out;
3596
3597         obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
3598         if (!obj)
3599                 goto out;
3600         fb = obj_to_fb(obj);
3601
3602         hdisplay = crtc->mode.hdisplay;
3603         vdisplay = crtc->mode.vdisplay;
3604
3605         if (crtc->invert_dimensions) {
3606                 int tmp;
3607                 tmp = vdisplay;
3608                 vdisplay = hdisplay;
3609                 hdisplay = tmp;
3610         }
3611
3612         if (hdisplay > fb->width ||
3613             vdisplay > fb->height ||
3614             crtc->x > fb->width - hdisplay ||
3615             crtc->y > fb->height - vdisplay) {
3616                 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
3617                               fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y,
3618                               crtc->invert_dimensions ? " (inverted)" : "");
3619                 ret = -ENOSPC;
3620                 goto out;
3621         }
3622
3623         if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3624                 ret = -ENOMEM;
3625                 mtx_lock(&dev->event_lock);
3626                 if (file_priv->event_space < sizeof e->event) {
3627                         mtx_unlock(&dev->event_lock);
3628                         goto out;
3629                 }
3630                 file_priv->event_space -= sizeof e->event;
3631                 mtx_unlock(&dev->event_lock);
3632
3633                 e = malloc(sizeof *e, DRM_MEM_KMS, M_WAITOK | M_ZERO);
3634                 if (e == NULL) {
3635                         mtx_lock(&dev->event_lock);
3636                         file_priv->event_space += sizeof e->event;
3637                         mtx_unlock(&dev->event_lock);
3638                         goto out;
3639                 }
3640
3641                 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
3642                 e->event.base.length = sizeof e->event;
3643                 e->event.user_data = page_flip->user_data;
3644                 e->base.event = &e->event.base;
3645                 e->base.file_priv = file_priv;
3646                 e->base.destroy =
3647                         (void (*) (struct drm_pending_event *)) free_vblank_event;
3648         }
3649
3650         ret = crtc->funcs->page_flip(crtc, fb, e);
3651         if (ret) {
3652                 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3653                         mtx_lock(&dev->event_lock);
3654                         file_priv->event_space += sizeof e->event;
3655                         mtx_unlock(&dev->event_lock);
3656                         free(e, DRM_MEM_KMS);
3657                 }
3658         }
3659
3660 out:
3661         sx_xunlock(&dev->mode_config.mutex);
3662         return ret;
3663 }
3664
3665 void drm_mode_config_reset(struct drm_device *dev)
3666 {
3667         struct drm_crtc *crtc;
3668         struct drm_encoder *encoder;
3669         struct drm_connector *connector;
3670
3671         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
3672                 if (crtc->funcs->reset)
3673                         crtc->funcs->reset(crtc);
3674
3675         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
3676                 if (encoder->funcs->reset)
3677                         encoder->funcs->reset(encoder);
3678
3679         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
3680                 connector->status = connector_status_unknown;
3681
3682                 if (connector->funcs->reset)
3683                         connector->funcs->reset(connector);
3684         }
3685 }
3686 EXPORT_SYMBOL(drm_mode_config_reset);
3687
3688 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
3689                                void *data, struct drm_file *file_priv)
3690 {
3691         struct drm_mode_create_dumb *args = data;
3692
3693         if (!dev->driver->dumb_create)
3694                 return -ENOSYS;
3695         return dev->driver->dumb_create(file_priv, dev, args);
3696 }
3697
3698 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
3699                              void *data, struct drm_file *file_priv)
3700 {
3701         struct drm_mode_map_dumb *args = data;
3702
3703         /* call driver ioctl to get mmap offset */
3704         if (!dev->driver->dumb_map_offset)
3705                 return -ENOSYS;
3706
3707         return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
3708 }
3709
3710 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
3711                                 void *data, struct drm_file *file_priv)
3712 {
3713         struct drm_mode_destroy_dumb *args = data;
3714
3715         if (!dev->driver->dumb_destroy)
3716                 return -ENOSYS;
3717
3718         return dev->driver->dumb_destroy(file_priv, dev, args->handle);
3719 }
3720
3721 /*
3722  * Just need to support RGB formats here for compat with code that doesn't
3723  * use pixel formats directly yet.
3724  */
3725 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
3726                           int *bpp)
3727 {
3728         switch (format) {
3729         case DRM_FORMAT_C8:
3730         case DRM_FORMAT_RGB332:
3731         case DRM_FORMAT_BGR233:
3732                 *depth = 8;
3733                 *bpp = 8;
3734                 break;
3735         case DRM_FORMAT_XRGB1555:
3736         case DRM_FORMAT_XBGR1555:
3737         case DRM_FORMAT_RGBX5551:
3738         case DRM_FORMAT_BGRX5551:
3739         case DRM_FORMAT_ARGB1555:
3740         case DRM_FORMAT_ABGR1555:
3741         case DRM_FORMAT_RGBA5551:
3742         case DRM_FORMAT_BGRA5551:
3743                 *depth = 15;
3744                 *bpp = 16;
3745                 break;
3746         case DRM_FORMAT_RGB565:
3747         case DRM_FORMAT_BGR565:
3748                 *depth = 16;
3749                 *bpp = 16;
3750                 break;
3751         case DRM_FORMAT_RGB888:
3752         case DRM_FORMAT_BGR888:
3753                 *depth = 24;
3754                 *bpp = 24;
3755                 break;
3756         case DRM_FORMAT_XRGB8888:
3757         case DRM_FORMAT_XBGR8888:
3758         case DRM_FORMAT_RGBX8888:
3759         case DRM_FORMAT_BGRX8888:
3760                 *depth = 24;
3761                 *bpp = 32;
3762                 break;
3763         case DRM_FORMAT_XRGB2101010:
3764         case DRM_FORMAT_XBGR2101010:
3765         case DRM_FORMAT_RGBX1010102:
3766         case DRM_FORMAT_BGRX1010102:
3767         case DRM_FORMAT_ARGB2101010:
3768         case DRM_FORMAT_ABGR2101010:
3769         case DRM_FORMAT_RGBA1010102:
3770         case DRM_FORMAT_BGRA1010102:
3771                 *depth = 30;
3772                 *bpp = 32;
3773                 break;
3774         case DRM_FORMAT_ARGB8888:
3775         case DRM_FORMAT_ABGR8888:
3776         case DRM_FORMAT_RGBA8888:
3777         case DRM_FORMAT_BGRA8888:
3778                 *depth = 32;
3779                 *bpp = 32;
3780                 break;
3781         default:
3782                 DRM_DEBUG_KMS("unsupported pixel format\n");
3783                 *depth = 0;
3784                 *bpp = 0;
3785                 break;
3786         }
3787 }
3788 EXPORT_SYMBOL(drm_fb_get_bpp_depth);
3789
3790 /**
3791  * drm_format_num_planes - get the number of planes for format
3792  * @format: pixel format (DRM_FORMAT_*)
3793  *
3794  * RETURNS:
3795  * The number of planes used by the specified pixel format.
3796  */
3797 int drm_format_num_planes(uint32_t format)
3798 {
3799         switch (format) {
3800         case DRM_FORMAT_YUV410:
3801         case DRM_FORMAT_YVU410:
3802         case DRM_FORMAT_YUV411:
3803         case DRM_FORMAT_YVU411:
3804         case DRM_FORMAT_YUV420:
3805         case DRM_FORMAT_YVU420:
3806         case DRM_FORMAT_YUV422:
3807         case DRM_FORMAT_YVU422:
3808         case DRM_FORMAT_YUV444:
3809         case DRM_FORMAT_YVU444:
3810                 return 3;
3811         case DRM_FORMAT_NV12:
3812         case DRM_FORMAT_NV21:
3813         case DRM_FORMAT_NV16:
3814         case DRM_FORMAT_NV61:
3815         case DRM_FORMAT_NV24:
3816         case DRM_FORMAT_NV42:
3817                 return 2;
3818         default:
3819                 return 1;
3820         }
3821 }
3822 EXPORT_SYMBOL(drm_format_num_planes);
3823
3824 /**
3825  * drm_format_plane_cpp - determine the bytes per pixel value
3826  * @format: pixel format (DRM_FORMAT_*)
3827  * @plane: plane index
3828  *
3829  * RETURNS:
3830  * The bytes per pixel value for the specified plane.
3831  */
3832 int drm_format_plane_cpp(uint32_t format, int plane)
3833 {
3834         unsigned int depth;
3835         int bpp;
3836
3837         if (plane >= drm_format_num_planes(format))
3838                 return 0;
3839
3840         switch (format) {
3841         case DRM_FORMAT_YUYV:
3842         case DRM_FORMAT_YVYU:
3843         case DRM_FORMAT_UYVY:
3844         case DRM_FORMAT_VYUY:
3845                 return 2;
3846         case DRM_FORMAT_NV12:
3847         case DRM_FORMAT_NV21:
3848         case DRM_FORMAT_NV16:
3849         case DRM_FORMAT_NV61:
3850         case DRM_FORMAT_NV24:
3851         case DRM_FORMAT_NV42:
3852                 return plane ? 2 : 1;
3853         case DRM_FORMAT_YUV410:
3854         case DRM_FORMAT_YVU410:
3855         case DRM_FORMAT_YUV411:
3856         case DRM_FORMAT_YVU411:
3857         case DRM_FORMAT_YUV420:
3858         case DRM_FORMAT_YVU420:
3859         case DRM_FORMAT_YUV422:
3860         case DRM_FORMAT_YVU422:
3861         case DRM_FORMAT_YUV444:
3862         case DRM_FORMAT_YVU444:
3863                 return 1;
3864         default:
3865                 drm_fb_get_bpp_depth(format, &depth, &bpp);
3866                 return bpp >> 3;
3867         }
3868 }
3869 EXPORT_SYMBOL(drm_format_plane_cpp);
3870
3871 /**
3872  * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor
3873  * @format: pixel format (DRM_FORMAT_*)
3874  *
3875  * RETURNS:
3876  * The horizontal chroma subsampling factor for the
3877  * specified pixel format.
3878  */
3879 int drm_format_horz_chroma_subsampling(uint32_t format)
3880 {
3881         switch (format) {
3882         case DRM_FORMAT_YUV411:
3883         case DRM_FORMAT_YVU411:
3884         case DRM_FORMAT_YUV410:
3885         case DRM_FORMAT_YVU410:
3886                 return 4;
3887         case DRM_FORMAT_YUYV:
3888         case DRM_FORMAT_YVYU:
3889         case DRM_FORMAT_UYVY:
3890         case DRM_FORMAT_VYUY:
3891         case DRM_FORMAT_NV12:
3892         case DRM_FORMAT_NV21:
3893         case DRM_FORMAT_NV16:
3894         case DRM_FORMAT_NV61:
3895         case DRM_FORMAT_YUV422:
3896         case DRM_FORMAT_YVU422:
3897         case DRM_FORMAT_YUV420:
3898         case DRM_FORMAT_YVU420:
3899                 return 2;
3900         default:
3901                 return 1;
3902         }
3903 }
3904 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling);
3905
3906 /**
3907  * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor
3908  * @format: pixel format (DRM_FORMAT_*)
3909  *
3910  * RETURNS:
3911  * The vertical chroma subsampling factor for the
3912  * specified pixel format.
3913  */
3914 int drm_format_vert_chroma_subsampling(uint32_t format)
3915 {
3916         switch (format) {
3917         case DRM_FORMAT_YUV410:
3918         case DRM_FORMAT_YVU410:
3919                 return 4;
3920         case DRM_FORMAT_YUV420:
3921         case DRM_FORMAT_YVU420:
3922         case DRM_FORMAT_NV12:
3923         case DRM_FORMAT_NV21:
3924                 return 2;
3925         default:
3926                 return 1;
3927         }
3928 }
3929 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling);