drivers/gpu/drm/drm_crtc.c

   1 /*
   2  * Copyright (c) 2006-2008 Intel Corporation
   3  * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
   4  * Copyright (c) 2008 Red Hat Inc.
   5  *
   6  * DRM core CRTC related functions
   7  *
   8  * Permission to use, copy, modify, distribute, and sell this software and its
   9  * documentation for any purpose is hereby granted without fee, provided that
  10  * the above copyright notice appear in all copies and that both that copyright
  11  * notice and this permission notice appear in supporting documentation, and
  12  * that the name of the copyright holders not be used in advertising or
  13  * publicity pertaining to distribution of the software without specific,
  14  * written prior permission.  The copyright holders make no representations
  15  * about the suitability of this software for any purpose.  It is provided "as
  16  * is" without express or implied warranty.
  17  *
  18  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  19  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  20  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  21  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  22  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  23  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  *
  26  * Authors:
  27  *      Keith Packard
  28  *      Eric Anholt <eric@anholt.net>
  29  *      Dave Airlie <airlied@linux.ie>
  30  *      Jesse Barnes <jesse.barnes@intel.com>
  31  */
  32 #include <linux/list.h>
  33 #include <linux/slab.h>
  34 #include <linux/export.h>
  35 #include "drm.h"
  36 #include "drmP.h"
  37 #include "drm_crtc.h"
  38 #include "drm_edid.h"
  39 #include "drm_fourcc.h"
  40
  41 struct drm_prop_enum_list {
  42         int type;
  43         char *name;
  44 };
  45
  46 /* Avoid boilerplate.  I'm tired of typing. */
  47 #define DRM_ENUM_NAME_FN(fnname, list)                          \
  48         char *fnname(int val)                                   \
  49         {                                                       \
  50                 int i;                                          \
  51                 for (i = 0; i < ARRAY_SIZE(list); i++) {        \
  52                         if (list[i].type == val)                \
  53                                 return list[i].name;            \
  54                 }                                               \
  55                 return "(unknown)";                             \
  56         }
  57
  58 /*
  59  * Global properties
  60  */
  61 static struct drm_prop_enum_list drm_dpms_enum_list[] =
  62 {       { DRM_MODE_DPMS_ON, "On" },
  63         { DRM_MODE_DPMS_STANDBY, "Standby" },
  64         { DRM_MODE_DPMS_SUSPEND, "Suspend" },
  65         { DRM_MODE_DPMS_OFF, "Off" }
  66 };
  67
  68 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
  69
  70 /*
  71  * Optional properties
  72  */
  73 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
  74 {
  75         { DRM_MODE_SCALE_NONE, "None" },
  76         { DRM_MODE_SCALE_FULLSCREEN, "Full" },
  77         { DRM_MODE_SCALE_CENTER, "Center" },
  78         { DRM_MODE_SCALE_ASPECT, "Full aspect" },
  79 };
  80
  81 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
  82 {
  83         { DRM_MODE_DITHERING_OFF, "Off" },
  84         { DRM_MODE_DITHERING_ON, "On" },
  85         { DRM_MODE_DITHERING_AUTO, "Automatic" },
  86 };
  87
  88 /*
  89  * Non-global properties, but "required" for certain connectors.
  90  */
  91 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
  92 {
  93         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
  94         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  95         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
  96 };
  97
  98 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
  99
 100 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
 101 {
 102         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 103         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
 104         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
 105 };
 106
 107 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
 108                  drm_dvi_i_subconnector_enum_list)
 109
 110 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
 111 {
 112         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
 113         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 114         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 115         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 116         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 117 };
 118
 119 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
 120
 121 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
 122 {
 123         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 124         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 125         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 126         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 127         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 128 };
 129
 130 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
 131                  drm_tv_subconnector_enum_list)
 132
 133 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
 134         { DRM_MODE_DIRTY_OFF,      "Off"      },
 135         { DRM_MODE_DIRTY_ON,       "On"       },
 136         { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
 137 };
 138
 139 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
 140                  drm_dirty_info_enum_list)
 141
 142 struct drm_conn_prop_enum_list {
 143         int type;
 144         char *name;
 145         int count;
 146 };
 147
 148 /*
 149  * Connector and encoder types.
 150  */
 151 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
 152 {       { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
 153         { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
 154         { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
 155         { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
 156         { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
 157         { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
 158         { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
 159         { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
 160         { DRM_MODE_CONNECTOR_Component, "Component", 0 },
 161         { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
 162         { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
 163         { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
 164         { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
 165         { DRM_MODE_CONNECTOR_TV, "TV", 0 },
 166         { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
 167         { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0},
 168 };
 169
 170 static struct drm_prop_enum_list drm_encoder_enum_list[] =
 171 {       { DRM_MODE_ENCODER_NONE, "None" },
 172         { DRM_MODE_ENCODER_DAC, "DAC" },
 173         { DRM_MODE_ENCODER_TMDS, "TMDS" },
 174         { DRM_MODE_ENCODER_LVDS, "LVDS" },
 175         { DRM_MODE_ENCODER_TVDAC, "TV" },
 176         { DRM_MODE_ENCODER_VIRTUAL, "Virtual" },
 177 };
 178
 179 char *drm_get_encoder_name(struct drm_encoder *encoder)
 180 {
 181         static char buf[32];
 182
 183         snprintf(buf, 32, "%s-%d",
 184                  drm_encoder_enum_list[encoder->encoder_type].name,
 185                  encoder->base.id);
 186         return buf;
 187 }
 188 EXPORT_SYMBOL(drm_get_encoder_name);
 189
 190 char *drm_get_connector_name(struct drm_connector *connector)
 191 {
 192         static char buf[32];
 193
 194         snprintf(buf, 32, "%s-%d",
 195                  drm_connector_enum_list[connector->connector_type].name,
 196                  connector->connector_type_id);
 197         return buf;
 198 }
 199 EXPORT_SYMBOL(drm_get_connector_name);
 200
 201 char *drm_get_connector_status_name(enum drm_connector_status status)
 202 {
 203         if (status == connector_status_connected)
 204                 return "connected";
 205         else if (status == connector_status_disconnected)
 206                 return "disconnected";
 207         else
 208                 return "unknown";
 209 }
 210
 211 /**
 212  * drm_mode_object_get - allocate a new identifier
 213  * @dev: DRM device
 214  * @ptr: object pointer, used to generate unique ID
 215  * @type: object type
 216  *
 217  * LOCKING:
 218  *
 219  * Create a unique identifier based on @ptr in @dev's identifier space.  Used
 220  * for tracking modes, CRTCs and connectors.
 221  *
 222  * RETURNS:
 223  * New unique (relative to other objects in @dev) integer identifier for the
 224  * object.
 225  */
 226 static int drm_mode_object_get(struct drm_device *dev,
 227                                struct drm_mode_object *obj, uint32_t obj_type)
 228 {
 229         int new_id = 0;
 230         int ret;
 231
 232 again:
 233         if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
 234                 DRM_ERROR("Ran out memory getting a mode number\n");
 235                 return -EINVAL;
 236         }
 237
 238         mutex_lock(&dev->mode_config.idr_mutex);
 239         ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
 240         mutex_unlock(&dev->mode_config.idr_mutex);
 241         if (ret == -EAGAIN)
 242                 goto again;
 243
 244         obj->id = new_id;
 245         obj->type = obj_type;
 246         return 0;
 247 }
 248
 249 /**
 250  * drm_mode_object_put - free an identifer
 251  * @dev: DRM device
 252  * @id: ID to free
 253  *
 254  * LOCKING:
 255  * Caller must hold DRM mode_config lock.
 256  *
 257  * Free @id from @dev's unique identifier pool.
 258  */
 259 static void drm_mode_object_put(struct drm_device *dev,
 260                                 struct drm_mode_object *object)
 261 {
 262         mutex_lock(&dev->mode_config.idr_mutex);
 263         idr_remove(&dev->mode_config.crtc_idr, object->id);
 264         mutex_unlock(&dev->mode_config.idr_mutex);
 265 }
 266
 267 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
 268                 uint32_t id, uint32_t type)
 269 {
 270         struct drm_mode_object *obj = NULL;
 271
 272         mutex_lock(&dev->mode_config.idr_mutex);
 273         obj = idr_find(&dev->mode_config.crtc_idr, id);
 274         if (!obj || (obj->type != type) || (obj->id != id))
 275                 obj = NULL;
 276         mutex_unlock(&dev->mode_config.idr_mutex);
 277
 278         return obj;
 279 }
 280 EXPORT_SYMBOL(drm_mode_object_find);
 281
 282 /**
 283  * drm_framebuffer_init - initialize a framebuffer
 284  * @dev: DRM device
 285  *
 286  * LOCKING:
 287  * Caller must hold mode config lock.
 288  *
 289  * Allocates an ID for the framebuffer's parent mode object, sets its mode
 290  * functions & device file and adds it to the master fd list.
 291  *
 292  * RETURNS:
 293  * Zero on success, error code on failure.
 294  */
 295 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
 296                          const struct drm_framebuffer_funcs *funcs)
 297 {
 298         int ret;
 299
 300         ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
 301         if (ret) {
 302                 return ret;
 303         }
 304
 305         fb->dev = dev;
 306         fb->funcs = funcs;
 307         dev->mode_config.num_fb++;
 308         list_add(&fb->head, &dev->mode_config.fb_list);
 309
 310         return 0;
 311 }
 312 EXPORT_SYMBOL(drm_framebuffer_init);
 313
 314 /**
 315  * drm_framebuffer_cleanup - remove a framebuffer object
 316  * @fb: framebuffer to remove
 317  *
 318  * LOCKING:
 319  * Caller must hold mode config lock.
 320  *
 321  * Scans all the CRTCs in @dev's mode_config.  If they're using @fb, removes
 322  * it, setting it to NULL.
 323  */
 324 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
 325 {
 326         struct drm_device *dev = fb->dev;
 327         struct drm_crtc *crtc;
 328         struct drm_plane *plane;
 329         struct drm_mode_set set;
 330         int ret;
 331
 332         /* remove from any CRTC */
 333         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 334                 if (crtc->fb == fb) {
 335                         /* should turn off the crtc */
 336                         memset(&set, 0, sizeof(struct drm_mode_set));
 337                         set.crtc = crtc;
 338                         set.fb = NULL;
 339                         ret = crtc->funcs->set_config(&set);
 340                         if (ret)
 341                                 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
 342                 }
 343         }
 344
 345         list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
 346                 if (plane->fb == fb) {
 347                         /* should turn off the crtc */
 348                         ret = plane->funcs->disable_plane(plane);
 349                         if (ret)
 350                                 DRM_ERROR("failed to disable plane with busy fb\n");
 351                         /* disconnect the plane from the fb and crtc: */
 352                         plane->fb = NULL;
 353                         plane->crtc = NULL;
 354                 }
 355         }
 356
 357         drm_mode_object_put(dev, &fb->base);
 358         list_del(&fb->head);
 359         dev->mode_config.num_fb--;
 360 }
 361 EXPORT_SYMBOL(drm_framebuffer_cleanup);
 362
 363 /**
 364  * drm_crtc_init - Initialise a new CRTC object
 365  * @dev: DRM device
 366  * @crtc: CRTC object to init
 367  * @funcs: callbacks for the new CRTC
 368  *
 369  * LOCKING:
 370  * Caller must hold mode config lock.
 371  *
 372  * Inits a new object created as base part of an driver crtc object.
 373  */
 374 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
 375                    const struct drm_crtc_funcs *funcs)
 376 {
 377         crtc->dev = dev;
 378         crtc->funcs = funcs;
 379
 380         mutex_lock(&dev->mode_config.mutex);
 381         drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
 382
 383         list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
 384         dev->mode_config.num_crtc++;
 385         mutex_unlock(&dev->mode_config.mutex);
 386 }
 387 EXPORT_SYMBOL(drm_crtc_init);
 388
 389 /**
 390  * drm_crtc_cleanup - Cleans up the core crtc usage.
 391  * @crtc: CRTC to cleanup
 392  *
 393  * LOCKING:
 394  * Caller must hold mode config lock.
 395  *
 396  * Cleanup @crtc. Removes from drm modesetting space
 397  * does NOT free object, caller does that.
 398  */
 399 void drm_crtc_cleanup(struct drm_crtc *crtc)
 400 {
 401         struct drm_device *dev = crtc->dev;
 402
 403         if (crtc->gamma_store) {
 404                 kfree(crtc->gamma_store);
 405                 crtc->gamma_store = NULL;
 406         }
 407
 408         drm_mode_object_put(dev, &crtc->base);
 409         list_del(&crtc->head);
 410         dev->mode_config.num_crtc--;
 411 }
 412 EXPORT_SYMBOL(drm_crtc_cleanup);
 413
 414 /**
 415  * drm_mode_probed_add - add a mode to a connector's probed mode list
 416  * @connector: connector the new mode
 417  * @mode: mode data
 418  *
 419  * LOCKING:
 420  * Caller must hold mode config lock.
 421  *
 422  * Add @mode to @connector's mode list for later use.
 423  */
 424 void drm_mode_probed_add(struct drm_connector *connector,
 425                          struct drm_display_mode *mode)
 426 {
 427         list_add(&mode->head, &connector->probed_modes);
 428 }
 429 EXPORT_SYMBOL(drm_mode_probed_add);
 430
 431 /**
 432  * drm_mode_remove - remove and free a mode
 433  * @connector: connector list to modify
 434  * @mode: mode to remove
 435  *
 436  * LOCKING:
 437  * Caller must hold mode config lock.
 438  *
 439  * Remove @mode from @connector's mode list, then free it.
 440  */
 441 void drm_mode_remove(struct drm_connector *connector,
 442                      struct drm_display_mode *mode)
 443 {
 444         list_del(&mode->head);
 445         kfree(mode);
 446 }
 447 EXPORT_SYMBOL(drm_mode_remove);
 448
 449 /**
 450  * drm_connector_init - Init a preallocated connector
 451  * @dev: DRM device
 452  * @connector: the connector to init
 453  * @funcs: callbacks for this connector
 454  * @name: user visible name of the connector
 455  *
 456  * LOCKING:
 457  * Caller must hold @dev's mode_config lock.
 458  *
 459  * Initialises a preallocated connector. Connectors should be
 460  * subclassed as part of driver connector objects.
 461  */
 462 void drm_connector_init(struct drm_device *dev,
 463                      struct drm_connector *connector,
 464                      const struct drm_connector_funcs *funcs,
 465                      int connector_type)
 466 {
 467         mutex_lock(&dev->mode_config.mutex);
 468
 469         connector->dev = dev;
 470         connector->funcs = funcs;
 471         drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
 472         connector->connector_type = connector_type;
 473         connector->connector_type_id =
 474                 ++drm_connector_enum_list[connector_type].count; /* TODO */
 475         INIT_LIST_HEAD(&connector->user_modes);
 476         INIT_LIST_HEAD(&connector->probed_modes);
 477         INIT_LIST_HEAD(&connector->modes);
 478         connector->edid_blob_ptr = NULL;
 479
 480         list_add_tail(&connector->head, &dev->mode_config.connector_list);
 481         dev->mode_config.num_connector++;
 482
 483         if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
 484                 drm_connector_attach_property(connector,
 485                                               dev->mode_config.edid_property,
 486                                               0);
 487
 488         drm_connector_attach_property(connector,
 489                                       dev->mode_config.dpms_property, 0);
 490
 491         mutex_unlock(&dev->mode_config.mutex);
 492 }
 493 EXPORT_SYMBOL(drm_connector_init);
 494
 495 /**
 496  * drm_connector_cleanup - cleans up an initialised connector
 497  * @connector: connector to cleanup
 498  *
 499  * LOCKING:
 500  * Caller must hold @dev's mode_config lock.
 501  *
 502  * Cleans up the connector but doesn't free the object.
 503  */
 504 void drm_connector_cleanup(struct drm_connector *connector)
 505 {
 506         struct drm_device *dev = connector->dev;
 507         struct drm_display_mode *mode, *t;
 508
 509         list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
 510                 drm_mode_remove(connector, mode);
 511
 512         list_for_each_entry_safe(mode, t, &connector->modes, head)
 513                 drm_mode_remove(connector, mode);
 514
 515         list_for_each_entry_safe(mode, t, &connector->user_modes, head)
 516                 drm_mode_remove(connector, mode);
 517
 518         mutex_lock(&dev->mode_config.mutex);
 519         drm_mode_object_put(dev, &connector->base);
 520         list_del(&connector->head);
 521         dev->mode_config.num_connector--;
 522         mutex_unlock(&dev->mode_config.mutex);
 523 }
 524 EXPORT_SYMBOL(drm_connector_cleanup);
 525
 526 void drm_encoder_init(struct drm_device *dev,
 527                       struct drm_encoder *encoder,
 528                       const struct drm_encoder_funcs *funcs,
 529                       int encoder_type)
 530 {
 531         mutex_lock(&dev->mode_config.mutex);
 532
 533         encoder->dev = dev;
 534
 535         drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
 536         encoder->encoder_type = encoder_type;
 537         encoder->funcs = funcs;
 538
 539         list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
 540         dev->mode_config.num_encoder++;
 541
 542         mutex_unlock(&dev->mode_config.mutex);
 543 }
 544 EXPORT_SYMBOL(drm_encoder_init);
 545
 546 void drm_encoder_cleanup(struct drm_encoder *encoder)
 547 {
 548         struct drm_device *dev = encoder->dev;
 549         mutex_lock(&dev->mode_config.mutex);
 550         drm_mode_object_put(dev, &encoder->base);
 551         list_del(&encoder->head);
 552         dev->mode_config.num_encoder--;
 553         mutex_unlock(&dev->mode_config.mutex);
 554 }
 555 EXPORT_SYMBOL(drm_encoder_cleanup);
 556
 557 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
 558                    unsigned long possible_crtcs,
 559                    const struct drm_plane_funcs *funcs,
 560                    const uint32_t *formats, uint32_t format_count,
 561                    bool priv)
 562 {
 563         mutex_lock(&dev->mode_config.mutex);
 564
 565         plane->dev = dev;
 566         drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
 567         plane->funcs = funcs;
 568         plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
 569                                       GFP_KERNEL);
 570         if (!plane->format_types) {
 571                 DRM_DEBUG_KMS("out of memory when allocating plane\n");
 572                 drm_mode_object_put(dev, &plane->base);
 573                 mutex_unlock(&dev->mode_config.mutex);
 574                 return -ENOMEM;
 575         }
 576
 577         memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
 578         plane->format_count = format_count;
 579         plane->possible_crtcs = possible_crtcs;
 580
 581         /* private planes are not exposed to userspace, but depending on
 582          * display hardware, might be convenient to allow sharing programming
 583          * for the scanout engine with the crtc implementation.
 584          */
 585         if (!priv) {
 586                 list_add_tail(&plane->head, &dev->mode_config.plane_list);
 587                 dev->mode_config.num_plane++;
 588         } else {
 589                 INIT_LIST_HEAD(&plane->head);
 590         }
 591
 592         mutex_unlock(&dev->mode_config.mutex);
 593
 594         return 0;
 595 }
 596 EXPORT_SYMBOL(drm_plane_init);
 597
 598 void drm_plane_cleanup(struct drm_plane *plane)
 599 {
 600         struct drm_device *dev = plane->dev;
 601
 602         mutex_lock(&dev->mode_config.mutex);
 603         kfree(plane->format_types);
 604         drm_mode_object_put(dev, &plane->base);
 605         /* if not added to a list, it must be a private plane */
 606         if (!list_empty(&plane->head)) {
 607                 list_del(&plane->head);
 608                 dev->mode_config.num_plane--;
 609         }
 610         mutex_unlock(&dev->mode_config.mutex);
 611 }
 612 EXPORT_SYMBOL(drm_plane_cleanup);
 613
 614 /**
 615  * drm_mode_create - create a new display mode
 616  * @dev: DRM device
 617  *
 618  * LOCKING:
 619  * Caller must hold DRM mode_config lock.
 620  *
 621  * Create a new drm_display_mode, give it an ID, and return it.
 622  *
 623  * RETURNS:
 624  * Pointer to new mode on success, NULL on error.
 625  */
 626 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
 627 {
 628         struct drm_display_mode *nmode;
 629
 630         nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
 631         if (!nmode)
 632                 return NULL;
 633
 634         drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
 635         return nmode;
 636 }
 637 EXPORT_SYMBOL(drm_mode_create);
 638
 639 /**
 640  * drm_mode_destroy - remove a mode
 641  * @dev: DRM device
 642  * @mode: mode to remove
 643  *
 644  * LOCKING:
 645  * Caller must hold mode config lock.
 646  *
 647  * Free @mode's unique identifier, then free it.
 648  */
 649 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
 650 {
 651         drm_mode_object_put(dev, &mode->base);
 652
 653         kfree(mode);
 654 }
 655 EXPORT_SYMBOL(drm_mode_destroy);
 656
 657 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 658 {
 659         struct drm_property *edid;
 660         struct drm_property *dpms;
 661         int i;
 662
 663         /*
 664          * Standard properties (apply to all connectors)
 665          */
 666         edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
 667                                    DRM_MODE_PROP_IMMUTABLE,
 668                                    "EDID", 0);
 669         dev->mode_config.edid_property = edid;
 670
 671         dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 672                                    "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
 673         for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
 674                 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
 675                                       drm_dpms_enum_list[i].name);
 676         dev->mode_config.dpms_property = dpms;
 677
 678         return 0;
 679 }
 680
 681 /**
 682  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
 683  * @dev: DRM device
 684  *
 685  * Called by a driver the first time a DVI-I connector is made.
 686  */
 687 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
 688 {
 689         struct drm_property *dvi_i_selector;
 690         struct drm_property *dvi_i_subconnector;
 691         int i;
 692
 693         if (dev->mode_config.dvi_i_select_subconnector_property)
 694                 return 0;
 695
 696         dvi_i_selector =
 697                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 698                                     "select subconnector",
 699                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
 700         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
 701                 drm_property_add_enum(dvi_i_selector, i,
 702                                       drm_dvi_i_select_enum_list[i].type,
 703                                       drm_dvi_i_select_enum_list[i].name);
 704         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
 705
 706         dvi_i_subconnector =
 707                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 708                                     DRM_MODE_PROP_IMMUTABLE,
 709                                     "subconnector",
 710                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
 711         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
 712                 drm_property_add_enum(dvi_i_subconnector, i,
 713                                       drm_dvi_i_subconnector_enum_list[i].type,
 714                                       drm_dvi_i_subconnector_enum_list[i].name);
 715         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
 716
 717         return 0;
 718 }
 719 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
 720
 721 /**
 722  * drm_create_tv_properties - create TV specific connector properties
 723  * @dev: DRM device
 724  * @num_modes: number of different TV formats (modes) supported
 725  * @modes: array of pointers to strings containing name of each format
 726  *
 727  * Called by a driver's TV initialization routine, this function creates
 728  * the TV specific connector properties for a given device.  Caller is
 729  * responsible for allocating a list of format names and passing them to
 730  * this routine.
 731  */
 732 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
 733                                   char *modes[])
 734 {
 735         struct drm_property *tv_selector;
 736         struct drm_property *tv_subconnector;
 737         int i;
 738
 739         if (dev->mode_config.tv_select_subconnector_property)
 740                 return 0;
 741
 742         /*
 743          * Basic connector properties
 744          */
 745         tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 746                                           "select subconnector",
 747                                           ARRAY_SIZE(drm_tv_select_enum_list));
 748         for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
 749                 drm_property_add_enum(tv_selector, i,
 750                                       drm_tv_select_enum_list[i].type,
 751                                       drm_tv_select_enum_list[i].name);
 752         dev->mode_config.tv_select_subconnector_property = tv_selector;
 753
 754         tv_subconnector =
 755                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 756                                     DRM_MODE_PROP_IMMUTABLE, "subconnector",
 757                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
 758         for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
 759                 drm_property_add_enum(tv_subconnector, i,
 760                                       drm_tv_subconnector_enum_list[i].type,
 761                                       drm_tv_subconnector_enum_list[i].name);
 762         dev->mode_config.tv_subconnector_property = tv_subconnector;
 763
 764         /*
 765          * Other, TV specific properties: margins & TV modes.
 766          */
 767         dev->mode_config.tv_left_margin_property =
 768                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 769                                     "left margin", 2);
 770         dev->mode_config.tv_left_margin_property->values[0] = 0;
 771         dev->mode_config.tv_left_margin_property->values[1] = 100;
 772
 773         dev->mode_config.tv_right_margin_property =
 774                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 775                                     "right margin", 2);
 776         dev->mode_config.tv_right_margin_property->values[0] = 0;
 777         dev->mode_config.tv_right_margin_property->values[1] = 100;
 778
 779         dev->mode_config.tv_top_margin_property =
 780                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 781                                     "top margin", 2);
 782         dev->mode_config.tv_top_margin_property->values[0] = 0;
 783         dev->mode_config.tv_top_margin_property->values[1] = 100;
 784
 785         dev->mode_config.tv_bottom_margin_property =
 786                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 787                                     "bottom margin", 2);
 788         dev->mode_config.tv_bottom_margin_property->values[0] = 0;
 789         dev->mode_config.tv_bottom_margin_property->values[1] = 100;
 790
 791         dev->mode_config.tv_mode_property =
 792                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 793                                     "mode", num_modes);
 794         for (i = 0; i < num_modes; i++)
 795                 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
 796                                       i, modes[i]);
 797
 798         dev->mode_config.tv_brightness_property =
 799                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 800                                     "brightness", 2);
 801         dev->mode_config.tv_brightness_property->values[0] = 0;
 802         dev->mode_config.tv_brightness_property->values[1] = 100;
 803
 804         dev->mode_config.tv_contrast_property =
 805                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 806                                     "contrast", 2);
 807         dev->mode_config.tv_contrast_property->values[0] = 0;
 808         dev->mode_config.tv_contrast_property->values[1] = 100;
 809
 810         dev->mode_config.tv_flicker_reduction_property =
 811                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 812                                     "flicker reduction", 2);
 813         dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
 814         dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
 815
 816         dev->mode_config.tv_overscan_property =
 817                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 818                                     "overscan", 2);
 819         dev->mode_config.tv_overscan_property->values[0] = 0;
 820         dev->mode_config.tv_overscan_property->values[1] = 100;
 821
 822         dev->mode_config.tv_saturation_property =
 823                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 824                                     "saturation", 2);
 825         dev->mode_config.tv_saturation_property->values[0] = 0;
 826         dev->mode_config.tv_saturation_property->values[1] = 100;
 827
 828         dev->mode_config.tv_hue_property =
 829                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 830                                     "hue", 2);
 831         dev->mode_config.tv_hue_property->values[0] = 0;
 832         dev->mode_config.tv_hue_property->values[1] = 100;
 833
 834         return 0;
 835 }
 836 EXPORT_SYMBOL(drm_mode_create_tv_properties);
 837
 838 /**
 839  * drm_mode_create_scaling_mode_property - create scaling mode property
 840  * @dev: DRM device
 841  *
 842  * Called by a driver the first time it's needed, must be attached to desired
 843  * connectors.
 844  */
 845 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
 846 {
 847         struct drm_property *scaling_mode;
 848         int i;
 849
 850         if (dev->mode_config.scaling_mode_property)
 851                 return 0;
 852
 853         scaling_mode =
 854                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
 855                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
 856         for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
 857                 drm_property_add_enum(scaling_mode, i,
 858                                       drm_scaling_mode_enum_list[i].type,
 859                                       drm_scaling_mode_enum_list[i].name);
 860
 861         dev->mode_config.scaling_mode_property = scaling_mode;
 862
 863         return 0;
 864 }
 865 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
 866
 867 /**
 868  * drm_mode_create_dithering_property - create dithering property
 869  * @dev: DRM device
 870  *
 871  * Called by a driver the first time it's needed, must be attached to desired
 872  * connectors.
 873  */
 874 int drm_mode_create_dithering_property(struct drm_device *dev)
 875 {
 876         struct drm_property *dithering_mode;
 877         int i;
 878
 879         if (dev->mode_config.dithering_mode_property)
 880                 return 0;
 881
 882         dithering_mode =
 883                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
 884                                     ARRAY_SIZE(drm_dithering_mode_enum_list));
 885         for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
 886                 drm_property_add_enum(dithering_mode, i,
 887                                       drm_dithering_mode_enum_list[i].type,
 888                                       drm_dithering_mode_enum_list[i].name);
 889         dev->mode_config.dithering_mode_property = dithering_mode;
 890
 891         return 0;
 892 }
 893 EXPORT_SYMBOL(drm_mode_create_dithering_property);
 894
 895 /**
 896  * drm_mode_create_dirty_property - create dirty property
 897  * @dev: DRM device
 898  *
 899  * Called by a driver the first time it's needed, must be attached to desired
 900  * connectors.
 901  */
 902 int drm_mode_create_dirty_info_property(struct drm_device *dev)
 903 {
 904         struct drm_property *dirty_info;
 905         int i;
 906
 907         if (dev->mode_config.dirty_info_property)
 908                 return 0;
 909
 910         dirty_info =
 911                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 912                                     DRM_MODE_PROP_IMMUTABLE,
 913                                     "dirty",
 914                                     ARRAY_SIZE(drm_dirty_info_enum_list));
 915         for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
 916                 drm_property_add_enum(dirty_info, i,
 917                                       drm_dirty_info_enum_list[i].type,
 918                                       drm_dirty_info_enum_list[i].name);
 919         dev->mode_config.dirty_info_property = dirty_info;
 920
 921         return 0;
 922 }
 923 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
 924
 925 /**
 926  * drm_mode_config_init - initialize DRM mode_configuration structure
 927  * @dev: DRM device
 928  *
 929  * LOCKING:
 930  * None, should happen single threaded at init time.
 931  *
 932  * Initialize @dev's mode_config structure, used for tracking the graphics
 933  * configuration of @dev.
 934  */
 935 void drm_mode_config_init(struct drm_device *dev)
 936 {
 937         mutex_init(&dev->mode_config.mutex);
 938         mutex_init(&dev->mode_config.idr_mutex);
 939         INIT_LIST_HEAD(&dev->mode_config.fb_list);
 940         INIT_LIST_HEAD(&dev->mode_config.crtc_list);
 941         INIT_LIST_HEAD(&dev->mode_config.connector_list);
 942         INIT_LIST_HEAD(&dev->mode_config.encoder_list);
 943         INIT_LIST_HEAD(&dev->mode_config.property_list);
 944         INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
 945         INIT_LIST_HEAD(&dev->mode_config.plane_list);
 946         idr_init(&dev->mode_config.crtc_idr);
 947
 948         mutex_lock(&dev->mode_config.mutex);
 949         drm_mode_create_standard_connector_properties(dev);
 950         mutex_unlock(&dev->mode_config.mutex);
 951
 952         /* Just to be sure */
 953         dev->mode_config.num_fb = 0;
 954         dev->mode_config.num_connector = 0;
 955         dev->mode_config.num_crtc = 0;
 956         dev->mode_config.num_encoder = 0;
 957 }
 958 EXPORT_SYMBOL(drm_mode_config_init);
 959
 960 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
 961 {
 962         uint32_t total_objects = 0;
 963
 964         total_objects += dev->mode_config.num_crtc;
 965         total_objects += dev->mode_config.num_connector;
 966         total_objects += dev->mode_config.num_encoder;
 967
 968         group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
 969         if (!group->id_list)
 970                 return -ENOMEM;
 971
 972         group->num_crtcs = 0;
 973         group->num_connectors = 0;
 974         group->num_encoders = 0;
 975         return 0;
 976 }
 977
 978 int drm_mode_group_init_legacy_group(struct drm_device *dev,
 979                                      struct drm_mode_group *group)
 980 {
 981         struct drm_crtc *crtc;
 982         struct drm_encoder *encoder;
 983         struct drm_connector *connector;
 984         int ret;
 985
 986         if ((ret = drm_mode_group_init(dev, group)))
 987                 return ret;
 988
 989         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 990                 group->id_list[group->num_crtcs++] = crtc->base.id;
 991
 992         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
 993                 group->id_list[group->num_crtcs + group->num_encoders++] =
 994                 encoder->base.id;
 995
 996         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 997                 group->id_list[group->num_crtcs + group->num_encoders +
 998                                group->num_connectors++] = connector->base.id;
 999
1000         return 0;
1001 }
1002
1003 /**
1004  * drm_mode_config_cleanup - free up DRM mode_config info
1005  * @dev: DRM device
1006  *
1007  * LOCKING:
1008  * Caller must hold mode config lock.
1009  *
1010  * Free up all the connectors and CRTCs associated with this DRM device, then
1011  * free up the framebuffers and associated buffer objects.
1012  *
1013  * FIXME: cleanup any dangling user buffer objects too
1014  */
1015 void drm_mode_config_cleanup(struct drm_device *dev)
1016 {
1017         struct drm_connector *connector, *ot;
1018         struct drm_crtc *crtc, *ct;
1019         struct drm_encoder *encoder, *enct;
1020         struct drm_framebuffer *fb, *fbt;
1021         struct drm_property *property, *pt;
1022         struct drm_plane *plane, *plt;
1023
1024         list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
1025                                  head) {
1026                 encoder->funcs->destroy(encoder);
1027         }
1028
1029         list_for_each_entry_safe(connector, ot,
1030                                  &dev->mode_config.connector_list, head) {
1031                 connector->funcs->destroy(connector);
1032         }
1033
1034         list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
1035                                  head) {
1036                 drm_property_destroy(dev, property);
1037         }
1038
1039         list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
1040                 fb->funcs->destroy(fb);
1041         }
1042
1043         list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
1044                 crtc->funcs->destroy(crtc);
1045         }
1046
1047         list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
1048                                  head) {
1049                 plane->funcs->destroy(plane);
1050         }
1051 }
1052 EXPORT_SYMBOL(drm_mode_config_cleanup);
1053
1054 /**
1055  * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
1056  * @out: drm_mode_modeinfo struct to return to the user
1057  * @in: drm_display_mode to use
1058  *
1059  * LOCKING:
1060  * None.
1061  *
1062  * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
1063  * the user.
1064  */
1065 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
1066                                struct drm_display_mode *in)
1067 {
1068         out->clock = in->clock;
1069         out->hdisplay = in->hdisplay;
1070         out->hsync_start = in->hsync_start;
1071         out->hsync_end = in->hsync_end;
1072         out->htotal = in->htotal;
1073         out->hskew = in->hskew;
1074         out->vdisplay = in->vdisplay;
1075         out->vsync_start = in->vsync_start;
1076         out->vsync_end = in->vsync_end;
1077         out->vtotal = in->vtotal;
1078         out->vscan = in->vscan;
1079         out->vrefresh = in->vrefresh;
1080         out->flags = in->flags;
1081         out->type = in->type;
1082         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1083         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1084 }
1085
1086 /**
1087  * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1088  * @out: drm_display_mode to return to the user
1089  * @in: drm_mode_modeinfo to use
1090  *
1091  * LOCKING:
1092  * None.
1093  *
1094  * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1095  * the caller.
1096  */
1097 void drm_crtc_convert_umode(struct drm_display_mode *out,
1098                             struct drm_mode_modeinfo *in)
1099 {
1100         out->clock = in->clock;
1101         out->hdisplay = in->hdisplay;
1102         out->hsync_start = in->hsync_start;
1103         out->hsync_end = in->hsync_end;
1104         out->htotal = in->htotal;
1105         out->hskew = in->hskew;
1106         out->vdisplay = in->vdisplay;
1107         out->vsync_start = in->vsync_start;
1108         out->vsync_end = in->vsync_end;
1109         out->vtotal = in->vtotal;
1110         out->vscan = in->vscan;
1111         out->vrefresh = in->vrefresh;
1112         out->flags = in->flags;
1113         out->type = in->type;
1114         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1115         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1116 }
1117
1118 /**
1119  * drm_mode_getresources - get graphics configuration
1120  * @inode: inode from the ioctl
1121  * @filp: file * from the ioctl
1122  * @cmd: cmd from ioctl
1123  * @arg: arg from ioctl
1124  *
1125  * LOCKING:
1126  * Takes mode config lock.
1127  *
1128  * Construct a set of configuration description structures and return
1129  * them to the user, including CRTC, connector and framebuffer configuration.
1130  *
1131  * Called by the user via ioctl.
1132  *
1133  * RETURNS:
1134  * Zero on success, errno on failure.
1135  */
1136 int drm_mode_getresources(struct drm_device *dev, void *data,
1137                           struct drm_file *file_priv)
1138 {
1139         struct drm_mode_card_res *card_res = data;
1140         struct list_head *lh;
1141         struct drm_framebuffer *fb;
1142         struct drm_connector *connector;
1143         struct drm_crtc *crtc;
1144         struct drm_encoder *encoder;
1145         int ret = 0;
1146         int connector_count = 0;
1147         int crtc_count = 0;
1148         int fb_count = 0;
1149         int encoder_count = 0;
1150         int copied = 0, i;
1151         uint32_t __user *fb_id;
1152         uint32_t __user *crtc_id;
1153         uint32_t __user *connector_id;
1154         uint32_t __user *encoder_id;
1155         struct drm_mode_group *mode_group;
1156
1157         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1158                 return -EINVAL;
1159
1160         mutex_lock(&dev->mode_config.mutex);
1161
1162         /*
1163          * For the non-control nodes we need to limit the list of resources
1164          * by IDs in the group list for this node
1165          */
1166         list_for_each(lh, &file_priv->fbs)
1167                 fb_count++;
1168
1169         mode_group = &file_priv->master->minor->mode_group;
1170         if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1171
1172                 list_for_each(lh, &dev->mode_config.crtc_list)
1173                         crtc_count++;
1174
1175                 list_for_each(lh, &dev->mode_config.connector_list)
1176                         connector_count++;
1177
1178                 list_for_each(lh, &dev->mode_config.encoder_list)
1179                         encoder_count++;
1180         } else {
1181
1182                 crtc_count = mode_group->num_crtcs;
1183                 connector_count = mode_group->num_connectors;
1184                 encoder_count = mode_group->num_encoders;
1185         }
1186
1187         card_res->max_height = dev->mode_config.max_height;
1188         card_res->min_height = dev->mode_config.min_height;
1189         card_res->max_width = dev->mode_config.max_width;
1190         card_res->min_width = dev->mode_config.min_width;
1191
1192         /* handle this in 4 parts */
1193         /* FBs */
1194         if (card_res->count_fbs >= fb_count) {
1195                 copied = 0;
1196                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1197                 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1198                         if (put_user(fb->base.id, fb_id + copied)) {
1199                                 ret = -EFAULT;
1200                                 goto out;
1201                         }
1202                         copied++;
1203                 }
1204         }
1205         card_res->count_fbs = fb_count;
1206
1207         /* CRTCs */
1208         if (card_res->count_crtcs >= crtc_count) {
1209                 copied = 0;
1210                 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1211                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1212                         list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1213                                             head) {
1214                                 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1215                                 if (put_user(crtc->base.id, crtc_id + copied)) {
1216                                         ret = -EFAULT;
1217                                         goto out;
1218                                 }
1219                                 copied++;
1220                         }
1221                 } else {
1222                         for (i = 0; i < mode_group->num_crtcs; i++) {
1223                                 if (put_user(mode_group->id_list[i],
1224                                              crtc_id + copied)) {
1225                                         ret = -EFAULT;
1226                                         goto out;
1227                                 }
1228                                 copied++;
1229                         }
1230                 }
1231         }
1232         card_res->count_crtcs = crtc_count;
1233
1234         /* Encoders */
1235         if (card_res->count_encoders >= encoder_count) {
1236                 copied = 0;
1237                 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1238                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1239                         list_for_each_entry(encoder,
1240                                             &dev->mode_config.encoder_list,
1241                                             head) {
1242                                 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1243                                                 drm_get_encoder_name(encoder));
1244                                 if (put_user(encoder->base.id, encoder_id +
1245                                              copied)) {
1246                                         ret = -EFAULT;
1247                                         goto out;
1248                                 }
1249                                 copied++;
1250                         }
1251                 } else {
1252                         for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1253                                 if (put_user(mode_group->id_list[i],
1254                                              encoder_id + copied)) {
1255                                         ret = -EFAULT;
1256                                         goto out;
1257                                 }
1258                                 copied++;
1259                         }
1260
1261                 }
1262         }
1263         card_res->count_encoders = encoder_count;
1264
1265         /* Connectors */
1266         if (card_res->count_connectors >= connector_count) {
1267                 copied = 0;
1268                 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1269                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1270                         list_for_each_entry(connector,
1271                                             &dev->mode_config.connector_list,
1272                                             head) {
1273                                 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1274                                         connector->base.id,
1275                                         drm_get_connector_name(connector));
1276                                 if (put_user(connector->base.id,
1277                                              connector_id + copied)) {
1278                                         ret = -EFAULT;
1279                                         goto out;
1280                                 }
1281                                 copied++;
1282                         }
1283                 } else {
1284                         int start = mode_group->num_crtcs +
1285                                 mode_group->num_encoders;
1286                         for (i = start; i < start + mode_group->num_connectors; i++) {
1287                                 if (put_user(mode_group->id_list[i],
1288                                              connector_id + copied)) {
1289                                         ret = -EFAULT;
1290                                         goto out;
1291                                 }
1292                                 copied++;
1293                         }
1294                 }
1295         }
1296         card_res->count_connectors = connector_count;
1297
1298         DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1299                   card_res->count_connectors, card_res->count_encoders);
1300
1301 out:
1302         mutex_unlock(&dev->mode_config.mutex);
1303         return ret;
1304 }
1305
1306 /**
1307  * drm_mode_getcrtc - get CRTC configuration
1308  * @inode: inode from the ioctl
1309  * @filp: file * from the ioctl
1310  * @cmd: cmd from ioctl
1311  * @arg: arg from ioctl
1312  *
1313  * LOCKING:
1314  * Caller? (FIXME)
1315  *
1316  * Construct a CRTC configuration structure to return to the user.
1317  *
1318  * Called by the user via ioctl.
1319  *
1320  * RETURNS:
1321  * Zero on success, errno on failure.
1322  */
1323 int drm_mode_getcrtc(struct drm_device *dev,
1324                      void *data, struct drm_file *file_priv)
1325 {
1326         struct drm_mode_crtc *crtc_resp = data;
1327         struct drm_crtc *crtc;
1328         struct drm_mode_object *obj;
1329         int ret = 0;
1330
1331         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1332                 return -EINVAL;
1333
1334         mutex_lock(&dev->mode_config.mutex);
1335
1336         obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1337                                    DRM_MODE_OBJECT_CRTC);
1338         if (!obj) {
1339                 ret = -EINVAL;
1340                 goto out;
1341         }
1342         crtc = obj_to_crtc(obj);
1343
1344         crtc_resp->x = crtc->x;
1345         crtc_resp->y = crtc->y;
1346         crtc_resp->gamma_size = crtc->gamma_size;
1347         if (crtc->fb)
1348                 crtc_resp->fb_id = crtc->fb->base.id;
1349         else
1350                 crtc_resp->fb_id = 0;
1351
1352         if (crtc->enabled) {
1353
1354                 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1355                 crtc_resp->mode_valid = 1;
1356
1357         } else {
1358                 crtc_resp->mode_valid = 0;
1359         }
1360
1361 out:
1362         mutex_unlock(&dev->mode_config.mutex);
1363         return ret;
1364 }
1365
1366 /**
1367  * drm_mode_getconnector - get connector configuration
1368  * @inode: inode from the ioctl
1369  * @filp: file * from the ioctl
1370  * @cmd: cmd from ioctl
1371  * @arg: arg from ioctl
1372  *
1373  * LOCKING:
1374  * Caller? (FIXME)
1375  *
1376  * Construct a connector configuration structure to return to the user.
1377  *
1378  * Called by the user via ioctl.
1379  *
1380  * RETURNS:
1381  * Zero on success, errno on failure.
1382  */
1383 int drm_mode_getconnector(struct drm_device *dev, void *data,
1384                           struct drm_file *file_priv)
1385 {
1386         struct drm_mode_get_connector *out_resp = data;
1387         struct drm_mode_object *obj;
1388         struct drm_connector *connector;
1389         struct drm_display_mode *mode;
1390         int mode_count = 0;
1391         int props_count = 0;
1392         int encoders_count = 0;
1393         int ret = 0;
1394         int copied = 0;
1395         int i;
1396         struct drm_mode_modeinfo u_mode;
1397         struct drm_mode_modeinfo __user *mode_ptr;
1398         uint32_t __user *prop_ptr;
1399         uint64_t __user *prop_values;
1400         uint32_t __user *encoder_ptr;
1401
1402         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1403                 return -EINVAL;
1404
1405         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1406
1407         DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1408
1409         mutex_lock(&dev->mode_config.mutex);
1410
1411         obj = drm_mode_object_find(dev, out_resp->connector_id,
1412                                    DRM_MODE_OBJECT_CONNECTOR);
1413         if (!obj) {
1414                 ret = -EINVAL;
1415                 goto out;
1416         }
1417         connector = obj_to_connector(obj);
1418
1419         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1420                 if (connector->property_ids[i] != 0) {
1421                         props_count++;
1422                 }
1423         }
1424
1425         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1426                 if (connector->encoder_ids[i] != 0) {
1427                         encoders_count++;
1428                 }
1429         }
1430
1431         if (out_resp->count_modes == 0) {
1432                 connector->funcs->fill_modes(connector,
1433                                              dev->mode_config.max_width,
1434                                              dev->mode_config.max_height);
1435         }
1436
1437         /* delayed so we get modes regardless of pre-fill_modes state */
1438         list_for_each_entry(mode, &connector->modes, head)
1439                 mode_count++;
1440
1441         out_resp->connector_id = connector->base.id;
1442         out_resp->connector_type = connector->connector_type;
1443         out_resp->connector_type_id = connector->connector_type_id;
1444         out_resp->mm_width = connector->display_info.width_mm;
1445         out_resp->mm_height = connector->display_info.height_mm;
1446         out_resp->subpixel = connector->display_info.subpixel_order;
1447         out_resp->connection = connector->status;
1448         if (connector->encoder)
1449                 out_resp->encoder_id = connector->encoder->base.id;
1450         else
1451                 out_resp->encoder_id = 0;
1452
1453         /*
1454          * This ioctl is called twice, once to determine how much space is
1455          * needed, and the 2nd time to fill it.
1456          */
1457         if ((out_resp->count_modes >= mode_count) && mode_count) {
1458                 copied = 0;
1459                 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
1460                 list_for_each_entry(mode, &connector->modes, head) {
1461                         drm_crtc_convert_to_umode(&u_mode, mode);
1462                         if (copy_to_user(mode_ptr + copied,
1463                                          &u_mode, sizeof(u_mode))) {
1464                                 ret = -EFAULT;
1465                                 goto out;
1466                         }
1467                         copied++;
1468                 }
1469         }
1470         out_resp->count_modes = mode_count;
1471
1472         if ((out_resp->count_props >= props_count) && props_count) {
1473                 copied = 0;
1474                 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
1475                 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
1476                 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1477                         if (connector->property_ids[i] != 0) {
1478                                 if (put_user(connector->property_ids[i],
1479                                              prop_ptr + copied)) {
1480                                         ret = -EFAULT;
1481                                         goto out;
1482                                 }
1483
1484                                 if (put_user(connector->property_values[i],
1485                                              prop_values + copied)) {
1486                                         ret = -EFAULT;
1487                                         goto out;
1488                                 }
1489                                 copied++;
1490                         }
1491                 }
1492         }
1493         out_resp->count_props = props_count;
1494
1495         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1496                 copied = 0;
1497                 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
1498                 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1499                         if (connector->encoder_ids[i] != 0) {
1500                                 if (put_user(connector->encoder_ids[i],
1501                                              encoder_ptr + copied)) {
1502                                         ret = -EFAULT;
1503                                         goto out;
1504                                 }
1505                                 copied++;
1506                         }
1507                 }
1508         }
1509         out_resp->count_encoders = encoders_count;
1510
1511 out:
1512         mutex_unlock(&dev->mode_config.mutex);
1513         return ret;
1514 }
1515
1516 int drm_mode_getencoder(struct drm_device *dev, void *data,
1517                         struct drm_file *file_priv)
1518 {
1519         struct drm_mode_get_encoder *enc_resp = data;
1520         struct drm_mode_object *obj;
1521         struct drm_encoder *encoder;
1522         int ret = 0;
1523
1524         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1525                 return -EINVAL;
1526
1527         mutex_lock(&dev->mode_config.mutex);
1528         obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1529                                    DRM_MODE_OBJECT_ENCODER);
1530         if (!obj) {
1531                 ret = -EINVAL;
1532                 goto out;
1533         }
1534         encoder = obj_to_encoder(obj);
1535
1536         if (encoder->crtc)
1537                 enc_resp->crtc_id = encoder->crtc->base.id;
1538         else
1539                 enc_resp->crtc_id = 0;
1540         enc_resp->encoder_type = encoder->encoder_type;
1541         enc_resp->encoder_id = encoder->base.id;
1542         enc_resp->possible_crtcs = encoder->possible_crtcs;
1543         enc_resp->possible_clones = encoder->possible_clones;
1544
1545 out:
1546         mutex_unlock(&dev->mode_config.mutex);
1547         return ret;
1548 }
1549
1550 /**
1551  * drm_mode_getplane_res - get plane info
1552  * @dev: DRM device
1553  * @data: ioctl data
1554  * @file_priv: DRM file info
1555  *
1556  * Return an plane count and set of IDs.
1557  */
1558 int drm_mode_getplane_res(struct drm_device *dev, void *data,
1559                             struct drm_file *file_priv)
1560 {
1561         struct drm_mode_get_plane_res *plane_resp = data;
1562         struct drm_mode_config *config;
1563         struct drm_plane *plane;
1564         uint32_t __user *plane_ptr;
1565         int copied = 0, ret = 0;
1566
1567         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1568                 return -EINVAL;
1569
1570         mutex_lock(&dev->mode_config.mutex);
1571         config = &dev->mode_config;
1572
1573         /*
1574          * This ioctl is called twice, once to determine how much space is
1575          * needed, and the 2nd time to fill it.
1576          */
1577         if (config->num_plane &&
1578             (plane_resp->count_planes >= config->num_plane)) {
1579                 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
1580
1581                 list_for_each_entry(plane, &config->plane_list, head) {
1582                         if (put_user(plane->base.id, plane_ptr + copied)) {
1583                                 ret = -EFAULT;
1584                                 goto out;
1585                         }
1586                         copied++;
1587                 }
1588         }
1589         plane_resp->count_planes = config->num_plane;
1590
1591 out:
1592         mutex_unlock(&dev->mode_config.mutex);
1593         return ret;
1594 }
1595
1596 /**
1597  * drm_mode_getplane - get plane info
1598  * @dev: DRM device
1599  * @data: ioctl data
1600  * @file_priv: DRM file info
1601  *
1602  * Return plane info, including formats supported, gamma size, any
1603  * current fb, etc.
1604  */
1605 int drm_mode_getplane(struct drm_device *dev, void *data,
1606                         struct drm_file *file_priv)
1607 {
1608         struct drm_mode_get_plane *plane_resp = data;
1609         struct drm_mode_object *obj;
1610         struct drm_plane *plane;
1611         uint32_t __user *format_ptr;
1612         int ret = 0;
1613
1614         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1615                 return -EINVAL;
1616
1617         mutex_lock(&dev->mode_config.mutex);
1618         obj = drm_mode_object_find(dev, plane_resp->plane_id,
1619                                    DRM_MODE_OBJECT_PLANE);
1620         if (!obj) {
1621                 ret = -ENOENT;
1622                 goto out;
1623         }
1624         plane = obj_to_plane(obj);
1625
1626         if (plane->crtc)
1627                 plane_resp->crtc_id = plane->crtc->base.id;
1628         else
1629                 plane_resp->crtc_id = 0;
1630
1631         if (plane->fb)
1632                 plane_resp->fb_id = plane->fb->base.id;
1633         else
1634                 plane_resp->fb_id = 0;
1635
1636         plane_resp->plane_id = plane->base.id;
1637         plane_resp->possible_crtcs = plane->possible_crtcs;
1638         plane_resp->gamma_size = plane->gamma_size;
1639
1640         /*
1641          * This ioctl is called twice, once to determine how much space is
1642          * needed, and the 2nd time to fill it.
1643          */
1644         if (plane->format_count &&
1645             (plane_resp->count_format_types >= plane->format_count)) {
1646                 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
1647                 if (copy_to_user(format_ptr,
1648                                  plane->format_types,
1649                                  sizeof(uint32_t) * plane->format_count)) {
1650                         ret = -EFAULT;
1651                         goto out;
1652                 }
1653         }
1654         plane_resp->count_format_types = plane->format_count;
1655
1656 out:
1657         mutex_unlock(&dev->mode_config.mutex);
1658         return ret;
1659 }
1660
1661 /**
1662  * drm_mode_setplane - set up or tear down an plane
1663  * @dev: DRM device
1664  * @data: ioctl data*
1665  * @file_prive: DRM file info
1666  *
1667  * Set plane info, including placement, fb, scaling, and other factors.
1668  * Or pass a NULL fb to disable.
1669  */
1670 int drm_mode_setplane(struct drm_device *dev, void *data,
1671                         struct drm_file *file_priv)
1672 {
1673         struct drm_mode_set_plane *plane_req = data;
1674         struct drm_mode_object *obj;
1675         struct drm_plane *plane;
1676         struct drm_crtc *crtc;
1677         struct drm_framebuffer *fb;
1678         int ret = 0;
1679         unsigned int fb_width, fb_height;
1680         int i;
1681
1682         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1683                 return -EINVAL;
1684
1685         mutex_lock(&dev->mode_config.mutex);
1686
1687         /*
1688          * First, find the plane, crtc, and fb objects.  If not available,
1689          * we don't bother to call the driver.
1690          */
1691         obj = drm_mode_object_find(dev, plane_req->plane_id,
1692                                    DRM_MODE_OBJECT_PLANE);
1693         if (!obj) {
1694                 DRM_DEBUG_KMS("Unknown plane ID %d\n",
1695                               plane_req->plane_id);
1696                 ret = -ENOENT;
1697                 goto out;
1698         }
1699         plane = obj_to_plane(obj);
1700
1701         /* No fb means shut it down */
1702         if (!plane_req->fb_id) {
1703                 plane->funcs->disable_plane(plane);
1704                 plane->crtc = NULL;
1705                 plane->fb = NULL;
1706                 goto out;
1707         }
1708
1709         obj = drm_mode_object_find(dev, plane_req->crtc_id,
1710                                    DRM_MODE_OBJECT_CRTC);
1711         if (!obj) {
1712                 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
1713                               plane_req->crtc_id);
1714                 ret = -ENOENT;
1715                 goto out;
1716         }
1717         crtc = obj_to_crtc(obj);
1718
1719         obj = drm_mode_object_find(dev, plane_req->fb_id,
1720                                    DRM_MODE_OBJECT_FB);
1721         if (!obj) {
1722                 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
1723                               plane_req->fb_id);
1724                 ret = -ENOENT;
1725                 goto out;
1726         }
1727         fb = obj_to_fb(obj);
1728
1729         /* Check whether this plane supports the fb pixel format. */
1730         for (i = 0; i < plane->format_count; i++)
1731                 if (fb->pixel_format == plane->format_types[i])
1732                         break;
1733         if (i == plane->format_count) {
1734                 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format);
1735                 ret = -EINVAL;
1736                 goto out;
1737         }
1738
1739         fb_width = fb->width << 16;
1740         fb_height = fb->height << 16;
1741
1742         /* Make sure source coordinates are inside the fb. */
1743         if (plane_req->src_w > fb_width ||
1744             plane_req->src_x > fb_width - plane_req->src_w ||
1745             plane_req->src_h > fb_height ||
1746             plane_req->src_y > fb_height - plane_req->src_h) {
1747                 DRM_DEBUG_KMS("Invalid source coordinates "
1748                               "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
1749                               plane_req->src_w >> 16,
1750                               ((plane_req->src_w & 0xffff) * 15625) >> 10,
1751                               plane_req->src_h >> 16,
1752                               ((plane_req->src_h & 0xffff) * 15625) >> 10,
1753                               plane_req->src_x >> 16,
1754                               ((plane_req->src_x & 0xffff) * 15625) >> 10,
1755                               plane_req->src_y >> 16,
1756                               ((plane_req->src_y & 0xffff) * 15625) >> 10);
1757                 ret = -ENOSPC;
1758                 goto out;
1759         }
1760
1761         /* Give drivers some help against integer overflows */
1762         if (plane_req->crtc_w > INT_MAX ||
1763             plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
1764             plane_req->crtc_h > INT_MAX ||
1765             plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
1766                 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
1767                               plane_req->crtc_w, plane_req->crtc_h,
1768                               plane_req->crtc_x, plane_req->crtc_y);
1769                 ret = -ERANGE;
1770                 goto out;
1771         }
1772
1773         ret = plane->funcs->update_plane(plane, crtc, fb,
1774                                          plane_req->crtc_x, plane_req->crtc_y,
1775                                          plane_req->crtc_w, plane_req->crtc_h,
1776                                          plane_req->src_x, plane_req->src_y,
1777                                          plane_req->src_w, plane_req->src_h);
1778         if (!ret) {
1779                 plane->crtc = crtc;
1780                 plane->fb = fb;
1781         }
1782
1783 out:
1784         mutex_unlock(&dev->mode_config.mutex);
1785
1786         return ret;
1787 }
1788
1789 /**
1790  * drm_mode_setcrtc - set CRTC configuration
1791  * @inode: inode from the ioctl
1792  * @filp: file * from the ioctl
1793  * @cmd: cmd from ioctl
1794  * @arg: arg from ioctl
1795  *
1796  * LOCKING:
1797  * Caller? (FIXME)
1798  *
1799  * Build a new CRTC configuration based on user request.
1800  *
1801  * Called by the user via ioctl.
1802  *
1803  * RETURNS:
1804  * Zero on success, errno on failure.
1805  */
1806 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1807                      struct drm_file *file_priv)
1808 {
1809         struct drm_mode_config *config = &dev->mode_config;
1810         struct drm_mode_crtc *crtc_req = data;
1811         struct drm_mode_object *obj;
1812         struct drm_crtc *crtc, *crtcfb;
1813         struct drm_connector **connector_set = NULL, *connector;
1814         struct drm_framebuffer *fb = NULL;
1815         struct drm_display_mode *mode = NULL;
1816         struct drm_mode_set set;
1817         uint32_t __user *set_connectors_ptr;
1818         int ret = 0;
1819         int i;
1820
1821         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1822                 return -EINVAL;
1823
1824         mutex_lock(&dev->mode_config.mutex);
1825         obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1826                                    DRM_MODE_OBJECT_CRTC);
1827         if (!obj) {
1828                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1829                 ret = -EINVAL;
1830                 goto out;
1831         }
1832         crtc = obj_to_crtc(obj);
1833         DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1834
1835         if (crtc_req->mode_valid) {
1836                 /* If we have a mode we need a framebuffer. */
1837                 /* If we pass -1, set the mode with the currently bound fb */
1838                 if (crtc_req->fb_id == -1) {
1839                         list_for_each_entry(crtcfb,
1840                                             &dev->mode_config.crtc_list, head) {
1841                                 if (crtcfb == crtc) {
1842                                         DRM_DEBUG_KMS("Using current fb for "
1843                                                         "setmode\n");
1844                                         fb = crtc->fb;
1845                                 }
1846                         }
1847                 } else {
1848                         obj = drm_mode_object_find(dev, crtc_req->fb_id,
1849                                                    DRM_MODE_OBJECT_FB);
1850                         if (!obj) {
1851                                 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1852                                                 crtc_req->fb_id);
1853                                 ret = -EINVAL;
1854                                 goto out;
1855                         }
1856                         fb = obj_to_fb(obj);
1857                 }
1858
1859                 mode = drm_mode_create(dev);
1860                 drm_crtc_convert_umode(mode, &crtc_req->mode);
1861                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1862         }
1863
1864         if (crtc_req->count_connectors == 0 && mode) {
1865                 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1866                 ret = -EINVAL;
1867                 goto out;
1868         }
1869
1870         if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1871                 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1872                           crtc_req->count_connectors);
1873                 ret = -EINVAL;
1874                 goto out;
1875         }
1876
1877         if (crtc_req->count_connectors > 0) {
1878                 u32 out_id;
1879
1880                 /* Avoid unbounded kernel memory allocation */
1881                 if (crtc_req->count_connectors > config->num_connector) {
1882                         ret = -EINVAL;
1883                         goto out;
1884                 }
1885
1886                 connector_set = kmalloc(crtc_req->count_connectors *
1887                                         sizeof(struct drm_connector *),
1888                                         GFP_KERNEL);
1889                 if (!connector_set) {
1890                         ret = -ENOMEM;
1891                         goto out;
1892                 }
1893
1894                 for (i = 0; i < crtc_req->count_connectors; i++) {
1895                         set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
1896                         if (get_user(out_id, &set_connectors_ptr[i])) {
1897                                 ret = -EFAULT;
1898                                 goto out;
1899                         }
1900
1901                         obj = drm_mode_object_find(dev, out_id,
1902                                                    DRM_MODE_OBJECT_CONNECTOR);
1903                         if (!obj) {
1904                                 DRM_DEBUG_KMS("Connector id %d unknown\n",
1905                                                 out_id);
1906                                 ret = -EINVAL;
1907                                 goto out;
1908                         }
1909                         connector = obj_to_connector(obj);
1910                         DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1911                                         connector->base.id,
1912                                         drm_get_connector_name(connector));
1913
1914                         connector_set[i] = connector;
1915                 }
1916         }
1917
1918         set.crtc = crtc;
1919         set.x = crtc_req->x;
1920         set.y = crtc_req->y;
1921         set.mode = mode;
1922         set.connectors = connector_set;
1923         set.num_connectors = crtc_req->count_connectors;
1924         set.fb = fb;
1925         ret = crtc->funcs->set_config(&set);
1926
1927 out:
1928         kfree(connector_set);
1929         mutex_unlock(&dev->mode_config.mutex);
1930         return ret;
1931 }
1932
1933 int drm_mode_cursor_ioctl(struct drm_device *dev,
1934                         void *data, struct drm_file *file_priv)
1935 {
1936         struct drm_mode_cursor *req = data;
1937         struct drm_mode_object *obj;
1938         struct drm_crtc *crtc;
1939         int ret = 0;
1940
1941         if (!drm_core_check_feature(dev, DRIVER_MODESET))
1942                 return -EINVAL;
1943
1944         if (!req->flags)
1945                 return -EINVAL;
1946
1947         mutex_lock(&dev->mode_config.mutex);
1948         obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1949         if (!obj) {
1950                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1951                 ret = -EINVAL;
1952                 goto out;
1953         }
1954         crtc = obj_to_crtc(obj);
1955
1956         if (req->flags & DRM_MODE_CURSOR_BO) {
1957                 if (!crtc->funcs->cursor_set) {
1958                         ret = -ENXIO;
1959                         goto out;
1960                 }
1961                 /* Turns off the cursor if handle is 0 */
1962                 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1963                                               req->width, req->height);
1964         }
1965
1966         if (req->flags & DRM_MODE_CURSOR_MOVE) {
1967                 if (crtc->funcs->cursor_move) {
1968                         ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1969                 } else {
1970                         ret = -EFAULT;
1971                         goto out;
1972                 }
1973         }
1974 out:
1975         mutex_unlock(&dev->mode_config.mutex);
1976         return ret;
1977 }
1978
1979 /* Original addfb only supported RGB formats, so figure out which one */
1980 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
1981 {
1982         uint32_t fmt;
1983
1984         switch (bpp) {
1985         case 8:
1986                 fmt = DRM_FORMAT_RGB332;
1987                 break;
1988         case 16:
1989                 if (depth == 15)
1990                         fmt = DRM_FORMAT_XRGB1555;
1991                 else
1992                         fmt = DRM_FORMAT_RGB565;
1993                 break;
1994         case 24:
1995                 fmt = DRM_FORMAT_RGB888;
1996                 break;
1997         case 32:
1998                 if (depth == 24)
1999                         fmt = DRM_FORMAT_XRGB8888;
2000                 else if (depth == 30)
2001                         fmt = DRM_FORMAT_XRGB2101010;
2002                 else
2003                         fmt = DRM_FORMAT_ARGB8888;
2004                 break;
2005         default:
2006                 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n");
2007                 fmt = DRM_FORMAT_XRGB8888;
2008                 break;
2009         }
2010
2011         return fmt;
2012 }
2013 EXPORT_SYMBOL(drm_mode_legacy_fb_format);
2014
2015 /**
2016  * drm_mode_addfb - add an FB to the graphics configuration
2017  * @inode: inode from the ioctl
2018  * @filp: file * from the ioctl
2019  * @cmd: cmd from ioctl
2020  * @arg: arg from ioctl
2021  *
2022  * LOCKING:
2023  * Takes mode config lock.
2024  *
2025  * Add a new FB to the specified CRTC, given a user request.
2026  *
2027  * Called by the user via ioctl.
2028  *
2029  * RETURNS:
2030  * Zero on success, errno on failure.
2031  */
2032 int drm_mode_addfb(struct drm_device *dev,
2033                    void *data, struct drm_file *file_priv)
2034 {
2035         struct drm_mode_fb_cmd *or = data;
2036         struct drm_mode_fb_cmd2 r = {};
2037         struct drm_mode_config *config = &dev->mode_config;
2038         struct drm_framebuffer *fb;
2039         int ret = 0;
2040
2041         /* Use new struct with format internally */
2042         r.fb_id = or->fb_id;
2043         r.width = or->width;
2044         r.height = or->height;
2045         r.pitches[0] = or->pitch;
2046         r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
2047         r.handles[0] = or->handle;
2048
2049         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2050                 return -EINVAL;
2051
2052         if ((config->min_width > r.width) || (r.width > config->max_width))
2053                 return -EINVAL;
2054
2055         if ((config->min_height > r.height) || (r.height > config->max_height))
2056                 return -EINVAL;
2057
2058         mutex_lock(&dev->mode_config.mutex);
2059
2060         /* TODO check buffer is sufficiently large */
2061         /* TODO setup destructor callback */
2062
2063         fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
2064         if (IS_ERR(fb)) {
2065                 DRM_ERROR("could not create framebuffer\n");
2066                 ret = PTR_ERR(fb);
2067                 goto out;
2068         }
2069
2070         or->fb_id = fb->base.id;
2071         list_add(&fb->filp_head, &file_priv->fbs);
2072         DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2073
2074 out:
2075         mutex_unlock(&dev->mode_config.mutex);
2076         return ret;
2077 }
2078
2079 static int format_check(struct drm_mode_fb_cmd2 *r)
2080 {
2081         uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN;
2082
2083         switch (format) {
2084         case DRM_FORMAT_C8:
2085         case DRM_FORMAT_RGB332:
2086         case DRM_FORMAT_BGR233:
2087         case DRM_FORMAT_XRGB4444:
2088         case DRM_FORMAT_XBGR4444:
2089         case DRM_FORMAT_RGBX4444:
2090         case DRM_FORMAT_BGRX4444:
2091         case DRM_FORMAT_ARGB4444:
2092         case DRM_FORMAT_ABGR4444:
2093         case DRM_FORMAT_RGBA4444:
2094         case DRM_FORMAT_BGRA4444:
2095         case DRM_FORMAT_XRGB1555:
2096         case DRM_FORMAT_XBGR1555:
2097         case DRM_FORMAT_RGBX5551:
2098         case DRM_FORMAT_BGRX5551:
2099         case DRM_FORMAT_ARGB1555:
2100         case DRM_FORMAT_ABGR1555:
2101         case DRM_FORMAT_RGBA5551:
2102         case DRM_FORMAT_BGRA5551:
2103         case DRM_FORMAT_RGB565:
2104         case DRM_FORMAT_BGR565:
2105         case DRM_FORMAT_RGB888:
2106         case DRM_FORMAT_BGR888:
2107         case DRM_FORMAT_XRGB8888:
2108         case DRM_FORMAT_XBGR8888:
2109         case DRM_FORMAT_RGBX8888:
2110         case DRM_FORMAT_BGRX8888:
2111         case DRM_FORMAT_ARGB8888:
2112         case DRM_FORMAT_ABGR8888:
2113         case DRM_FORMAT_RGBA8888:
2114         case DRM_FORMAT_BGRA8888:
2115         case DRM_FORMAT_XRGB2101010:
2116         case DRM_FORMAT_XBGR2101010:
2117         case DRM_FORMAT_RGBX1010102:
2118         case DRM_FORMAT_BGRX1010102:
2119         case DRM_FORMAT_ARGB2101010:
2120         case DRM_FORMAT_ABGR2101010:
2121         case DRM_FORMAT_RGBA1010102:
2122         case DRM_FORMAT_BGRA1010102:
2123         case DRM_FORMAT_YUYV:
2124         case DRM_FORMAT_YVYU:
2125         case DRM_FORMAT_UYVY:
2126         case DRM_FORMAT_VYUY:
2127         case DRM_FORMAT_AYUV:
2128         case DRM_FORMAT_NV12:
2129         case DRM_FORMAT_NV21:
2130         case DRM_FORMAT_NV16:
2131         case DRM_FORMAT_NV61:
2132         case DRM_FORMAT_YUV410:
2133         case DRM_FORMAT_YVU410:
2134         case DRM_FORMAT_YUV411:
2135         case DRM_FORMAT_YVU411:
2136         case DRM_FORMAT_YUV420:
2137         case DRM_FORMAT_YVU420:
2138         case DRM_FORMAT_YUV422:
2139         case DRM_FORMAT_YVU422:
2140         case DRM_FORMAT_YUV444:
2141         case DRM_FORMAT_YVU444:
2142                 return 0;
2143         default:
2144                 return -EINVAL;
2145         }
2146 }
2147
2148 /**
2149  * drm_mode_addfb2 - add an FB to the graphics configuration
2150  * @inode: inode from the ioctl
2151  * @filp: file * from the ioctl
2152  * @cmd: cmd from ioctl
2153  * @arg: arg from ioctl
2154  *
2155  * LOCKING:
2156  * Takes mode config lock.
2157  *
2158  * Add a new FB to the specified CRTC, given a user request with format.
2159  *
2160  * Called by the user via ioctl.
2161  *
2162  * RETURNS:
2163  * Zero on success, errno on failure.
2164  */
2165 int drm_mode_addfb2(struct drm_device *dev,
2166                     void *data, struct drm_file *file_priv)
2167 {
2168         struct drm_mode_fb_cmd2 *r = data;
2169         struct drm_mode_config *config = &dev->mode_config;
2170         struct drm_framebuffer *fb;
2171         int ret = 0;
2172
2173         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2174                 return -EINVAL;
2175
2176         if ((config->min_width > r->width) || (r->width > config->max_width)) {
2177                 DRM_ERROR("bad framebuffer width %d, should be >= %d && <= %d\n",
2178                           r->width, config->min_width, config->max_width);
2179                 return -EINVAL;
2180         }
2181         if ((config->min_height > r->height) || (r->height > config->max_height)) {
2182                 DRM_ERROR("bad framebuffer height %d, should be >= %d && <= %d\n",
2183                           r->height, config->min_height, config->max_height);
2184                 return -EINVAL;
2185         }
2186
2187         ret = format_check(r);
2188         if (ret) {
2189                 DRM_ERROR("bad framebuffer format 0x%08x\n", r->pixel_format);
2190                 return ret;
2191         }
2192
2193         mutex_lock(&dev->mode_config.mutex);
2194
2195         fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
2196         if (IS_ERR(fb)) {
2197                 DRM_ERROR("could not create framebuffer\n");
2198                 ret = PTR_ERR(fb);
2199                 goto out;
2200         }
2201
2202         r->fb_id = fb->base.id;
2203         list_add(&fb->filp_head, &file_priv->fbs);
2204         DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
2205
2206 out:
2207         mutex_unlock(&dev->mode_config.mutex);
2208         return ret;
2209 }
2210
2211 /**
2212  * drm_mode_rmfb - remove an FB from the configuration
2213  * @inode: inode from the ioctl
2214  * @filp: file * from the ioctl
2215  * @cmd: cmd from ioctl
2216  * @arg: arg from ioctl
2217  *
2218  * LOCKING:
2219  * Takes mode config lock.
2220  *
2221  * Remove the FB specified by the user.
2222  *
2223  * Called by the user via ioctl.
2224  *
2225  * RETURNS:
2226  * Zero on success, errno on failure.
2227  */
2228 int drm_mode_rmfb(struct drm_device *dev,
2229                    void *data, struct drm_file *file_priv)
2230 {
2231         struct drm_mode_object *obj;
2232         struct drm_framebuffer *fb = NULL;
2233         struct drm_framebuffer *fbl = NULL;
2234         uint32_t *id = data;
2235         int ret = 0;
2236         int found = 0;
2237
2238         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2239                 return -EINVAL;
2240
2241         mutex_lock(&dev->mode_config.mutex);
2242         obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
2243         /* TODO check that we really get a framebuffer back. */
2244         if (!obj) {
2245                 ret = -EINVAL;
2246                 goto out;
2247         }
2248         fb = obj_to_fb(obj);
2249
2250         list_for_each_entry(fbl, &file_priv->fbs, filp_head)
2251                 if (fb == fbl)
2252                         found = 1;
2253
2254         if (!found) {
2255                 ret = -EINVAL;
2256                 goto out;
2257         }
2258
2259         /* TODO release all crtc connected to the framebuffer */
2260         /* TODO unhock the destructor from the buffer object */
2261
2262         list_del(&fb->filp_head);
2263         fb->funcs->destroy(fb);
2264
2265 out:
2266         mutex_unlock(&dev->mode_config.mutex);
2267         return ret;
2268 }
2269
2270 /**
2271  * drm_mode_getfb - get FB info
2272  * @inode: inode from the ioctl
2273  * @filp: file * from the ioctl
2274  * @cmd: cmd from ioctl
2275  * @arg: arg from ioctl
2276  *
2277  * LOCKING:
2278  * Caller? (FIXME)
2279  *
2280  * Lookup the FB given its ID and return info about it.
2281  *
2282  * Called by the user via ioctl.
2283  *
2284  * RETURNS:
2285  * Zero on success, errno on failure.
2286  */
2287 int drm_mode_getfb(struct drm_device *dev,
2288                    void *data, struct drm_file *file_priv)
2289 {
2290         struct drm_mode_fb_cmd *r = data;
2291         struct drm_mode_object *obj;
2292         struct drm_framebuffer *fb;
2293         int ret = 0;
2294
2295         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2296                 return -EINVAL;
2297
2298         mutex_lock(&dev->mode_config.mutex);
2299         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2300         if (!obj) {
2301                 ret = -EINVAL;
2302                 goto out;
2303         }
2304         fb = obj_to_fb(obj);
2305
2306         r->height = fb->height;
2307         r->width = fb->width;
2308         r->depth = fb->depth;
2309         r->bpp = fb->bits_per_pixel;
2310         r->pitch = fb->pitches[0];
2311         fb->funcs->create_handle(fb, file_priv, &r->handle);
2312
2313 out:
2314         mutex_unlock(&dev->mode_config.mutex);
2315         return ret;
2316 }
2317
2318 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
2319                            void *data, struct drm_file *file_priv)
2320 {
2321         struct drm_clip_rect __user *clips_ptr;
2322         struct drm_clip_rect *clips = NULL;
2323         struct drm_mode_fb_dirty_cmd *r = data;
2324         struct drm_mode_object *obj;
2325         struct drm_framebuffer *fb;
2326         unsigned flags;
2327         int num_clips;
2328         int ret = 0;
2329
2330         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2331                 return -EINVAL;
2332
2333         mutex_lock(&dev->mode_config.mutex);
2334         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
2335         if (!obj) {
2336                 ret = -EINVAL;
2337                 goto out_err1;
2338         }
2339         fb = obj_to_fb(obj);
2340
2341         num_clips = r->num_clips;
2342         clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr;
2343
2344         if (!num_clips != !clips_ptr) {
2345                 ret = -EINVAL;
2346                 goto out_err1;
2347         }
2348
2349         flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
2350
2351         /* If userspace annotates copy, clips must come in pairs */
2352         if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
2353                 ret = -EINVAL;
2354                 goto out_err1;
2355         }
2356
2357         if (num_clips && clips_ptr) {
2358                 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
2359                         ret = -EINVAL;
2360                         goto out_err1;
2361                 }
2362                 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
2363                 if (!clips) {
2364                         ret = -ENOMEM;
2365                         goto out_err1;
2366                 }
2367
2368                 ret = copy_from_user(clips, clips_ptr,
2369                                      num_clips * sizeof(*clips));
2370                 if (ret) {
2371                         ret = -EFAULT;
2372                         goto out_err2;
2373                 }
2374         }
2375
2376         if (fb->funcs->dirty) {
2377                 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
2378                                        clips, num_clips);
2379         } else {
2380                 ret = -ENOSYS;
2381                 goto out_err2;
2382         }
2383
2384 out_err2:
2385         kfree(clips);
2386 out_err1:
2387         mutex_unlock(&dev->mode_config.mutex);
2388         return ret;
2389 }
2390
2391
2392 /**
2393  * drm_fb_release - remove and free the FBs on this file
2394  * @filp: file * from the ioctl
2395  *
2396  * LOCKING:
2397  * Takes mode config lock.
2398  *
2399  * Destroy all the FBs associated with @filp.
2400  *
2401  * Called by the user via ioctl.
2402  *
2403  * RETURNS:
2404  * Zero on success, errno on failure.
2405  */
2406 void drm_fb_release(struct drm_file *priv)
2407 {
2408         struct drm_device *dev = priv->minor->dev;
2409         struct drm_framebuffer *fb, *tfb;
2410
2411         mutex_lock(&dev->mode_config.mutex);
2412         list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
2413                 list_del(&fb->filp_head);
2414                 fb->funcs->destroy(fb);
2415         }
2416         mutex_unlock(&dev->mode_config.mutex);
2417 }
2418
2419 /**
2420  * drm_mode_attachmode - add a mode to the user mode list
2421  * @dev: DRM device
2422  * @connector: connector to add the mode to
2423  * @mode: mode to add
2424  *
2425  * Add @mode to @connector's user mode list.
2426  */
2427 static int drm_mode_attachmode(struct drm_device *dev,
2428                                struct drm_connector *connector,
2429                                struct drm_display_mode *mode)
2430 {
2431         int ret = 0;
2432
2433         list_add_tail(&mode->head, &connector->user_modes);
2434         return ret;
2435 }
2436
2437 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
2438                              struct drm_display_mode *mode)
2439 {
2440         struct drm_connector *connector;
2441         int ret = 0;
2442         struct drm_display_mode *dup_mode;
2443         int need_dup = 0;
2444         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2445                 if (!connector->encoder)
2446                         break;
2447                 if (connector->encoder->crtc == crtc) {
2448                         if (need_dup)
2449                                 dup_mode = drm_mode_duplicate(dev, mode);
2450                         else
2451                                 dup_mode = mode;
2452                         ret = drm_mode_attachmode(dev, connector, dup_mode);
2453                         if (ret)
2454                                 return ret;
2455                         need_dup = 1;
2456                 }
2457         }
2458         return 0;
2459 }
2460 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
2461
2462 static int drm_mode_detachmode(struct drm_device *dev,
2463                                struct drm_connector *connector,
2464                                struct drm_display_mode *mode)
2465 {
2466         int found = 0;
2467         int ret = 0;
2468         struct drm_display_mode *match_mode, *t;
2469
2470         list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
2471                 if (drm_mode_equal(match_mode, mode)) {
2472                         list_del(&match_mode->head);
2473                         drm_mode_destroy(dev, match_mode);
2474                         found = 1;
2475                         break;
2476                 }
2477         }
2478
2479         if (!found)
2480                 ret = -EINVAL;
2481
2482         return ret;
2483 }
2484
2485 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
2486 {
2487         struct drm_connector *connector;
2488
2489         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2490                 drm_mode_detachmode(dev, connector, mode);
2491         }
2492         return 0;
2493 }
2494 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2495
2496 /**
2497  * drm_fb_attachmode - Attach a user mode to an connector
2498  * @inode: inode from the ioctl
2499  * @filp: file * from the ioctl
2500  * @cmd: cmd from ioctl
2501  * @arg: arg from ioctl
2502  *
2503  * This attaches a user specified mode to an connector.
2504  * Called by the user via ioctl.
2505  *
2506  * RETURNS:
2507  * Zero on success, errno on failure.
2508  */
2509 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2510                               void *data, struct drm_file *file_priv)
2511 {
2512         struct drm_mode_mode_cmd *mode_cmd = data;
2513         struct drm_connector *connector;
2514         struct drm_display_mode *mode;
2515         struct drm_mode_object *obj;
2516         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2517         int ret = 0;
2518
2519         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2520                 return -EINVAL;
2521
2522         mutex_lock(&dev->mode_config.mutex);
2523
2524         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2525         if (!obj) {
2526                 ret = -EINVAL;
2527                 goto out;
2528         }
2529         connector = obj_to_connector(obj);
2530
2531         mode = drm_mode_create(dev);
2532         if (!mode) {
2533                 ret = -ENOMEM;
2534                 goto out;
2535         }
2536
2537         drm_crtc_convert_umode(mode, umode);
2538
2539         ret = drm_mode_attachmode(dev, connector, mode);
2540 out:
2541         mutex_unlock(&dev->mode_config.mutex);
2542         return ret;
2543 }
2544
2545
2546 /**
2547  * drm_fb_detachmode - Detach a user specified mode from an connector
2548  * @inode: inode from the ioctl
2549  * @filp: file * from the ioctl
2550  * @cmd: cmd from ioctl
2551  * @arg: arg from ioctl
2552  *
2553  * Called by the user via ioctl.
2554  *
2555  * RETURNS:
2556  * Zero on success, errno on failure.
2557  */
2558 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2559                               void *data, struct drm_file *file_priv)
2560 {
2561         struct drm_mode_object *obj;
2562         struct drm_mode_mode_cmd *mode_cmd = data;
2563         struct drm_connector *connector;
2564         struct drm_display_mode mode;
2565         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2566         int ret = 0;
2567
2568         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2569                 return -EINVAL;
2570
2571         mutex_lock(&dev->mode_config.mutex);
2572
2573         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2574         if (!obj) {
2575                 ret = -EINVAL;
2576                 goto out;
2577         }
2578         connector = obj_to_connector(obj);
2579
2580         drm_crtc_convert_umode(&mode, umode);
2581         ret = drm_mode_detachmode(dev, connector, &mode);
2582 out:
2583         mutex_unlock(&dev->mode_config.mutex);
2584         return ret;
2585 }
2586
2587 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2588                                          const char *name, int num_values)
2589 {
2590         struct drm_property *property = NULL;
2591
2592         property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2593         if (!property)
2594                 return NULL;
2595
2596         if (num_values) {
2597                 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2598                 if (!property->values)
2599                         goto fail;
2600         }
2601
2602         drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2603         property->flags = flags;
2604         property->num_values = num_values;
2605         INIT_LIST_HEAD(&property->enum_blob_list);
2606
2607         if (name) {
2608                 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2609                 property->name[DRM_PROP_NAME_LEN-1] = '\0';
2610         }
2611
2612         list_add_tail(&property->head, &dev->mode_config.property_list);
2613         return property;
2614 fail:
2615         kfree(property);
2616         return NULL;
2617 }
2618 EXPORT_SYMBOL(drm_property_create);
2619
2620 int drm_property_add_enum(struct drm_property *property, int index,
2621                           uint64_t value, const char *name)
2622 {
2623         struct drm_property_enum *prop_enum;
2624
2625         if (!(property->flags & DRM_MODE_PROP_ENUM))
2626                 return -EINVAL;
2627
2628         if (!list_empty(&property->enum_blob_list)) {
2629                 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2630                         if (prop_enum->value == value) {
2631                                 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2632                                 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2633                                 return 0;
2634                         }
2635                 }
2636         }
2637
2638         prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2639         if (!prop_enum)
2640                 return -ENOMEM;
2641
2642         strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2643         prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2644         prop_enum->value = value;
2645
2646         property->values[index] = value;
2647         list_add_tail(&prop_enum->head, &property->enum_blob_list);
2648         return 0;
2649 }
2650 EXPORT_SYMBOL(drm_property_add_enum);
2651
2652 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2653 {
2654         struct drm_property_enum *prop_enum, *pt;
2655
2656         list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2657                 list_del(&prop_enum->head);
2658                 kfree(prop_enum);
2659         }
2660
2661         if (property->num_values)
2662                 kfree(property->values);
2663         drm_mode_object_put(dev, &property->base);
2664         list_del(&property->head);
2665         kfree(property);
2666 }
2667 EXPORT_SYMBOL(drm_property_destroy);
2668
2669 int drm_connector_attach_property(struct drm_connector *connector,
2670                                struct drm_property *property, uint64_t init_val)
2671 {
2672         int i;
2673
2674         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2675                 if (connector->property_ids[i] == 0) {
2676                         connector->property_ids[i] = property->base.id;
2677                         connector->property_values[i] = init_val;
2678                         break;
2679                 }
2680         }
2681
2682         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2683                 return -EINVAL;
2684         return 0;
2685 }
2686 EXPORT_SYMBOL(drm_connector_attach_property);
2687
2688 int drm_connector_property_set_value(struct drm_connector *connector,
2689                                   struct drm_property *property, uint64_t value)
2690 {
2691         int i;
2692
2693         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2694                 if (connector->property_ids[i] == property->base.id) {
2695                         connector->property_values[i] = value;
2696                         break;
2697                 }
2698         }
2699
2700         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2701                 return -EINVAL;
2702         return 0;
2703 }
2704 EXPORT_SYMBOL(drm_connector_property_set_value);
2705
2706 int drm_connector_property_get_value(struct drm_connector *connector,
2707                                   struct drm_property *property, uint64_t *val)
2708 {
2709         int i;
2710
2711         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2712                 if (connector->property_ids[i] == property->base.id) {
2713                         *val = connector->property_values[i];
2714                         break;
2715                 }
2716         }
2717
2718         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2719                 return -EINVAL;
2720         return 0;
2721 }
2722 EXPORT_SYMBOL(drm_connector_property_get_value);
2723
2724 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2725                                void *data, struct drm_file *file_priv)
2726 {
2727         struct drm_mode_object *obj;
2728         struct drm_mode_get_property *out_resp = data;
2729         struct drm_property *property;
2730         int enum_count = 0;
2731         int blob_count = 0;
2732         int value_count = 0;
2733         int ret = 0, i;
2734         int copied;
2735         struct drm_property_enum *prop_enum;
2736         struct drm_mode_property_enum __user *enum_ptr;
2737         struct drm_property_blob *prop_blob;
2738         uint32_t __user *blob_id_ptr;
2739         uint64_t __user *values_ptr;
2740         uint32_t __user *blob_length_ptr;
2741
2742         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2743                 return -EINVAL;
2744
2745         mutex_lock(&dev->mode_config.mutex);
2746         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2747         if (!obj) {
2748                 ret = -EINVAL;
2749                 goto done;
2750         }
2751         property = obj_to_property(obj);
2752
2753         if (property->flags & DRM_MODE_PROP_ENUM) {
2754                 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2755                         enum_count++;
2756         } else if (property->flags & DRM_MODE_PROP_BLOB) {
2757                 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2758                         blob_count++;
2759         }
2760
2761         value_count = property->num_values;
2762
2763         strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2764         out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2765         out_resp->flags = property->flags;
2766
2767         if ((out_resp->count_values >= value_count) && value_count) {
2768                 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr;
2769                 for (i = 0; i < value_count; i++) {
2770                         if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2771                                 ret = -EFAULT;
2772                                 goto done;
2773                         }
2774                 }
2775         }
2776         out_resp->count_values = value_count;
2777
2778         if (property->flags & DRM_MODE_PROP_ENUM) {
2779                 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2780                         copied = 0;
2781                         enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr;
2782                         list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2783
2784                                 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2785                                         ret = -EFAULT;
2786                                         goto done;
2787                                 }
2788
2789                                 if (copy_to_user(&enum_ptr[copied].name,
2790                                                  &prop_enum->name, DRM_PROP_NAME_LEN)) {
2791                                         ret = -EFAULT;
2792                                         goto done;
2793                                 }
2794                                 copied++;
2795                         }
2796                 }
2797                 out_resp->count_enum_blobs = enum_count;
2798         }
2799
2800         if (property->flags & DRM_MODE_PROP_BLOB) {
2801                 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2802                         copied = 0;
2803                         blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr;
2804                         blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr;
2805
2806                         list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2807                                 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2808                                         ret = -EFAULT;
2809                                         goto done;
2810                                 }
2811
2812                                 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2813                                         ret = -EFAULT;
2814                                         goto done;
2815                                 }
2816
2817                                 copied++;
2818                         }
2819                 }
2820                 out_resp->count_enum_blobs = blob_count;
2821         }
2822 done:
2823         mutex_unlock(&dev->mode_config.mutex);
2824         return ret;
2825 }
2826
2827 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2828                                                           void *data)
2829 {
2830         struct drm_property_blob *blob;
2831
2832         if (!length || !data)
2833                 return NULL;
2834
2835         blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2836         if (!blob)
2837                 return NULL;
2838
2839         blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2840         blob->length = length;
2841
2842         memcpy(blob->data, data, length);
2843
2844         drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2845
2846         list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2847         return blob;
2848 }
2849
2850 static void drm_property_destroy_blob(struct drm_device *dev,
2851                                struct drm_property_blob *blob)
2852 {
2853         drm_mode_object_put(dev, &blob->base);
2854         list_del(&blob->head);
2855         kfree(blob);
2856 }
2857
2858 int drm_mode_getblob_ioctl(struct drm_device *dev,
2859                            void *data, struct drm_file *file_priv)
2860 {
2861         struct drm_mode_object *obj;
2862         struct drm_mode_get_blob *out_resp = data;
2863         struct drm_property_blob *blob;
2864         int ret = 0;
2865         void __user *blob_ptr;
2866
2867         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2868                 return -EINVAL;
2869
2870         mutex_lock(&dev->mode_config.mutex);
2871         obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2872         if (!obj) {
2873                 ret = -EINVAL;
2874                 goto done;
2875         }
2876         blob = obj_to_blob(obj);
2877
2878         if (out_resp->length == blob->length) {
2879                 blob_ptr = (void __user *)(unsigned long)out_resp->data;
2880                 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2881                         ret = -EFAULT;
2882                         goto done;
2883                 }
2884         }
2885         out_resp->length = blob->length;
2886
2887 done:
2888         mutex_unlock(&dev->mode_config.mutex);
2889         return ret;
2890 }
2891
2892 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2893                                             struct edid *edid)
2894 {
2895         struct drm_device *dev = connector->dev;
2896         int ret = 0, size;
2897
2898         if (connector->edid_blob_ptr)
2899                 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2900
2901         /* Delete edid, when there is none. */
2902         if (!edid) {
2903                 connector->edid_blob_ptr = NULL;
2904                 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2905                 return ret;
2906         }
2907
2908         size = EDID_LENGTH * (1 + edid->extensions);
2909         connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
2910                                                             size, edid);
2911
2912         ret = drm_connector_property_set_value(connector,
2913                                                dev->mode_config.edid_property,
2914                                                connector->edid_blob_ptr->base.id);
2915
2916         return ret;
2917 }
2918 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2919
2920 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2921                                        void *data, struct drm_file *file_priv)
2922 {
2923         struct drm_mode_connector_set_property *out_resp = data;
2924         struct drm_mode_object *obj;
2925         struct drm_property *property;
2926         struct drm_connector *connector;
2927         int ret = -EINVAL;
2928         int i;
2929
2930         if (!drm_core_check_feature(dev, DRIVER_MODESET))
2931                 return -EINVAL;
2932
2933         mutex_lock(&dev->mode_config.mutex);
2934
2935         obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2936         if (!obj) {
2937                 goto out;
2938         }
2939         connector = obj_to_connector(obj);
2940
2941         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2942                 if (connector->property_ids[i] == out_resp->prop_id)
2943                         break;
2944         }
2945
2946         if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2947                 goto out;
2948         }
2949
2950         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2951         if (!obj) {
2952                 goto out;
2953         }
2954         property = obj_to_property(obj);
2955
2956         if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2957                 goto out;
2958
2959         if (property->flags & DRM_MODE_PROP_RANGE) {
2960                 if (out_resp->value < property->values[0])
2961                         goto out;
2962
2963                 if (out_resp->value > property->values[1])
2964                         goto out;
2965         } else {
2966                 int found = 0;
2967                 for (i = 0; i < property->num_values; i++) {
2968                         if (property->values[i] == out_resp->value) {
2969                                 found = 1;
2970                                 break;
2971                         }
2972                 }
2973                 if (!found) {
2974                         goto out;
2975                 }
2976         }
2977
2978         /* Do DPMS ourselves */
2979         if (property == connector->dev->mode_config.dpms_property) {
2980                 if (connector->funcs->dpms)
2981                         (*connector->funcs->dpms)(connector, (int) out_resp->value);
2982                 ret = 0;
2983         } else if (connector->funcs->set_property)
2984                 ret = connector->funcs->set_property(connector, property, out_resp->value);
2985
2986         /* store the property value if successful */
2987         if (!ret)
2988                 drm_connector_property_set_value(connector, property, out_resp->value);
2989 out:
2990         mutex_unlock(&dev->mode_config.mutex);
2991         return ret;
2992 }
2993
2994 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2995                                       struct drm_encoder *encoder)
2996 {
2997         int i;
2998
2999         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3000                 if (connector->encoder_ids[i] == 0) {
3001                         connector->encoder_ids[i] = encoder->base.id;
3002                         return 0;
3003                 }
3004         }
3005         return -ENOMEM;
3006 }
3007 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
3008
3009 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
3010                                     struct drm_encoder *encoder)
3011 {
3012         int i;
3013         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
3014                 if (connector->encoder_ids[i] == encoder->base.id) {
3015                         connector->encoder_ids[i] = 0;
3016                         if (connector->encoder == encoder)
3017                                 connector->encoder = NULL;
3018                         break;
3019                 }
3020         }
3021 }
3022 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
3023
3024 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
3025                                   int gamma_size)
3026 {
3027         crtc->gamma_size = gamma_size;
3028
3029         crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
3030         if (!crtc->gamma_store) {
3031                 crtc->gamma_size = 0;
3032                 return false;
3033         }
3034
3035         return true;
3036 }
3037 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
3038
3039 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
3040                              void *data, struct drm_file *file_priv)
3041 {
3042         struct drm_mode_crtc_lut *crtc_lut = data;
3043         struct drm_mode_object *obj;
3044         struct drm_crtc *crtc;
3045         void *r_base, *g_base, *b_base;
3046         int size;
3047         int ret = 0;
3048
3049         if (!drm_core_check_feature(dev, DRIVER_MODESET))
3050                 return -EINVAL;
3051
3052         mutex_lock(&dev->mode_config.mutex);
3053         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3054         if (!obj) {
3055                 ret = -EINVAL;
3056                 goto out;
3057         }
3058         crtc = obj_to_crtc(obj);
3059
3060         /* memcpy into gamma store */
3061         if (crtc_lut->gamma_size != crtc->gamma_size) {
3062                 ret = -EINVAL;
3063                 goto out;
3064         }
3065
3066         size = crtc_lut->gamma_size * (sizeof(uint16_t));
3067         r_base = crtc->gamma_store;
3068         if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
3069                 ret = -EFAULT;
3070                 goto out;
3071         }
3072
3073         g_base = r_base + size;
3074         if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
3075                 ret = -EFAULT;
3076                 goto out;
3077         }
3078
3079         b_base = g_base + size;
3080         if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
3081                 ret = -EFAULT;
3082                 goto out;
3083         }
3084
3085         crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
3086
3087 out:
3088         mutex_unlock(&dev->mode_config.mutex);
3089         return ret;
3090
3091 }
3092
3093 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
3094                              void *data, struct drm_file *file_priv)
3095 {
3096         struct drm_mode_crtc_lut *crtc_lut = data;
3097         struct drm_mode_object *obj;
3098         struct drm_crtc *crtc;
3099         void *r_base, *g_base, *b_base;
3100         int size;
3101         int ret = 0;
3102
3103         if (!drm_core_check_feature(dev, DRIVER_MODESET))
3104                 return -EINVAL;
3105
3106         mutex_lock(&dev->mode_config.mutex);
3107         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
3108         if (!obj) {
3109                 ret = -EINVAL;
3110                 goto out;
3111         }
3112         crtc = obj_to_crtc(obj);
3113
3114         /* memcpy into gamma store */
3115         if (crtc_lut->gamma_size != crtc->gamma_size) {
3116                 ret = -EINVAL;
3117                 goto out;
3118         }
3119
3120         size = crtc_lut->gamma_size * (sizeof(uint16_t));
3121         r_base = crtc->gamma_store;
3122         if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
3123                 ret = -EFAULT;
3124                 goto out;
3125         }
3126
3127         g_base = r_base + size;
3128         if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
3129                 ret = -EFAULT;
3130                 goto out;
3131         }
3132
3133         b_base = g_base + size;
3134         if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
3135                 ret = -EFAULT;
3136                 goto out;
3137         }
3138 out:
3139         mutex_unlock(&dev->mode_config.mutex);
3140         return ret;
3141 }
3142
3143 int drm_mode_page_flip_ioctl(struct drm_device *dev,
3144                              void *data, struct drm_file *file_priv)
3145 {
3146         struct drm_mode_crtc_page_flip *page_flip = data;
3147         struct drm_mode_object *obj;
3148         struct drm_crtc *crtc;
3149         struct drm_framebuffer *fb;
3150         struct drm_pending_vblank_event *e = NULL;
3151         unsigned long flags;
3152         int ret = -EINVAL;
3153
3154         if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
3155             page_flip->reserved != 0)
3156                 return -EINVAL;
3157
3158         mutex_lock(&dev->mode_config.mutex);
3159         obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
3160         if (!obj)
3161                 goto out;
3162         crtc = obj_to_crtc(obj);
3163
3164         if (crtc->fb == NULL) {
3165                 /* The framebuffer is currently unbound, presumably
3166                  * due to a hotplug event, that userspace has not
3167                  * yet discovered.
3168                  */
3169                 ret = -EBUSY;
3170                 goto out;
3171         }
3172
3173         if (crtc->funcs->page_flip == NULL)
3174                 goto out;
3175
3176         obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
3177         if (!obj)
3178                 goto out;
3179         fb = obj_to_fb(obj);
3180
3181         if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
3182                 ret = -ENOMEM;
3183                 spin_lock_irqsave(&dev->event_lock, flags);
3184                 if (file_priv->event_space < sizeof e->event) {
3185                         spin_unlock_irqrestore(&dev->event_lock, flags);
3186                         goto out;
3187                 }
3188                 file_priv->event_space -= sizeof e->event;
3189                 spin_unlock_irqrestore(&dev->event_lock, flags);
3190
3191                 e = kzalloc(sizeof *e, GFP_KERNEL);
3192                 if (e == NULL) {
3193                         spin_lock_irqsave(&dev->event_lock, flags);
3194                         file_priv->event_space += sizeof e->event;
3195                         spin_unlock_irqrestore(&dev->event_lock, flags);
3196                         goto out;
3197                 }
3198
3199                 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
3200                 e->event.base.length = sizeof e->event;
3201                 e->event.user_data = page_flip->user_data;
3202                 e->base.event = &e->event.base;
3203                 e->base.file_priv = file_priv;
3204                 e->base.destroy =
3205                         (void (*) (struct drm_pending_event *)) kfree;
3206         }
3207
3208         ret = crtc->funcs->page_flip(crtc, fb, e);
3209         if (ret) {
3210                 spin_lock_irqsave(&dev->event_lock, flags);
3211                 file_priv->event_space += sizeof e->event;
3212                 spin_unlock_irqrestore(&dev->event_lock, flags);
3213                 kfree(e);
3214         }
3215
3216 out:
3217         mutex_unlock(&dev->mode_config.mutex);
3218         return ret;
3219 }
3220
3221 void drm_mode_config_reset(struct drm_device *dev)
3222 {
3223         struct drm_crtc *crtc;
3224         struct drm_encoder *encoder;
3225         struct drm_connector *connector;
3226
3227         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
3228                 if (crtc->funcs->reset)
3229                         crtc->funcs->reset(crtc);
3230
3231         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
3232                 if (encoder->funcs->reset)
3233                         encoder->funcs->reset(encoder);
3234
3235         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
3236                 if (connector->funcs->reset)
3237                         connector->funcs->reset(connector);
3238 }
3239 EXPORT_SYMBOL(drm_mode_config_reset);
3240
3241 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
3242                                void *data, struct drm_file *file_priv)
3243 {
3244         struct drm_mode_create_dumb *args = data;
3245
3246         if (!dev->driver->dumb_create)
3247                 return -ENOSYS;
3248         return dev->driver->dumb_create(file_priv, dev, args);
3249 }
3250
3251 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
3252                              void *data, struct drm_file *file_priv)
3253 {
3254         struct drm_mode_map_dumb *args = data;
3255
3256         /* call driver ioctl to get mmap offset */
3257         if (!dev->driver->dumb_map_offset)
3258                 return -ENOSYS;
3259
3260         return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
3261 }
3262
3263 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
3264                                 void *data, struct drm_file *file_priv)
3265 {
3266         struct drm_mode_destroy_dumb *args = data;
3267
3268         if (!dev->driver->dumb_destroy)
3269                 return -ENOSYS;
3270
3271         return dev->driver->dumb_destroy(file_priv, dev, args->handle);
3272 }
3273
3274 /*
3275  * Just need to support RGB formats here for compat with code that doesn't
3276  * use pixel formats directly yet.
3277  */
3278 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
3279                           int *bpp)
3280 {
3281         switch (format) {
3282         case DRM_FORMAT_RGB332:
3283         case DRM_FORMAT_BGR233:
3284                 *depth = 8;
3285                 *bpp = 8;
3286                 break;
3287         case DRM_FORMAT_XRGB1555:
3288         case DRM_FORMAT_XBGR1555:
3289         case DRM_FORMAT_RGBX5551:
3290         case DRM_FORMAT_BGRX5551:
3291         case DRM_FORMAT_ARGB1555:
3292         case DRM_FORMAT_ABGR1555:
3293         case DRM_FORMAT_RGBA5551:
3294         case DRM_FORMAT_BGRA5551:
3295                 *depth = 15;
3296                 *bpp = 16;
3297                 break;
3298         case DRM_FORMAT_RGB565:
3299         case DRM_FORMAT_BGR565:
3300                 *depth = 16;
3301                 *bpp = 16;
3302                 break;
3303         case DRM_FORMAT_RGB888:
3304         case DRM_FORMAT_BGR888:
3305                 *depth = 24;
3306                 *bpp = 24;
3307                 break;
3308         case DRM_FORMAT_XRGB8888:
3309         case DRM_FORMAT_XBGR8888:
3310         case DRM_FORMAT_RGBX8888:
3311         case DRM_FORMAT_BGRX8888:
3312                 *depth = 24;
3313                 *bpp = 32;
3314                 break;
3315         case DRM_FORMAT_XRGB2101010:
3316         case DRM_FORMAT_XBGR2101010:
3317         case DRM_FORMAT_RGBX1010102:
3318         case DRM_FORMAT_BGRX1010102:
3319         case DRM_FORMAT_ARGB2101010:
3320         case DRM_FORMAT_ABGR2101010:
3321         case DRM_FORMAT_RGBA1010102:
3322         case DRM_FORMAT_BGRA1010102:
3323                 *depth = 30;
3324                 *bpp = 32;
3325                 break;
3326         case DRM_FORMAT_ARGB8888:
3327         case DRM_FORMAT_ABGR8888:
3328         case DRM_FORMAT_RGBA8888:
3329         case DRM_FORMAT_BGRA8888:
3330                 *depth = 32;
3331                 *bpp = 32;
3332                 break;
3333         default:
3334                 DRM_DEBUG_KMS("unsupported pixel format\n");
3335                 *depth = 0;
3336                 *bpp = 0;
3337                 break;
3338         }
3339 }
3340 EXPORT_SYMBOL(drm_fb_get_bpp_depth);