SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 "drm.h"
  34 #include "drmP.h"
  35 #include "drm_crtc.h"
  36
  37 struct drm_prop_enum_list {
  38         int type;
  39         char *name;
  40 };
  41
  42 /* Avoid boilerplate.  I'm tired of typing. */
  43 #define DRM_ENUM_NAME_FN(fnname, list)                          \
  44         char *fnname(int val)                                   \
  45         {                                                       \
  46                 int i;                                          \
  47                 for (i = 0; i < ARRAY_SIZE(list); i++) {        \
  48                         if (list[i].type == val)                \
  49                                 return list[i].name;            \
  50                 }                                               \
  51                 return "(unknown)";                             \
  52         }
  53
  54 /*
  55  * Global properties
  56  */
  57 static struct drm_prop_enum_list drm_dpms_enum_list[] =
  58 {       { DRM_MODE_DPMS_ON, "On" },
  59         { DRM_MODE_DPMS_STANDBY, "Standby" },
  60         { DRM_MODE_DPMS_SUSPEND, "Suspend" },
  61         { DRM_MODE_DPMS_OFF, "Off" }
  62 };
  63
  64 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
  65
  66 /*
  67  * Optional properties
  68  */
  69 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
  70 {
  71         { DRM_MODE_SCALE_NONE, "None" },
  72         { DRM_MODE_SCALE_FULLSCREEN, "Full" },
  73         { DRM_MODE_SCALE_CENTER, "Center" },
  74         { DRM_MODE_SCALE_ASPECT, "Full aspect" },
  75 };
  76
  77 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
  78 {
  79         { DRM_MODE_DITHERING_OFF, "Off" },
  80         { DRM_MODE_DITHERING_ON, "On" },
  81 };
  82
  83 /*
  84  * Non-global properties, but "required" for certain connectors.
  85  */
  86 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
  87 {
  88         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
  89         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  90         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
  91 };
  92
  93 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
  94
  95 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
  96 {
  97         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
  98         { DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
  99         { DRM_MODE_SUBCONNECTOR_DVIA,      "DVI-A"     }, /* DVI-I  */
 100 };
 101
 102 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
 103                  drm_dvi_i_subconnector_enum_list)
 104
 105 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
 106 {
 107         { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
 108         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 109         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 110         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 111         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 112 };
 113
 114 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
 115
 116 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
 117 {
 118         { DRM_MODE_SUBCONNECTOR_Unknown,   "Unknown"   }, /* DVI-I and TV-out */
 119         { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
 120         { DRM_MODE_SUBCONNECTOR_SVIDEO,    "SVIDEO"    }, /* TV-out */
 121         { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
 122         { DRM_MODE_SUBCONNECTOR_SCART,     "SCART"     }, /* TV-out */
 123 };
 124
 125 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
 126                  drm_tv_subconnector_enum_list)
 127
 128 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
 129         { DRM_MODE_DIRTY_OFF,      "Off"      },
 130         { DRM_MODE_DIRTY_ON,       "On"       },
 131         { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
 132 };
 133
 134 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
 135                  drm_dirty_info_enum_list)
 136
 137 struct drm_conn_prop_enum_list {
 138         int type;
 139         char *name;
 140         int count;
 141 };
 142
 143 /*
 144  * Connector and encoder types.
 145  */
 146 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
 147 {       { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
 148         { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
 149         { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
 150         { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
 151         { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
 152         { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
 153         { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
 154         { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
 155         { DRM_MODE_CONNECTOR_Component, "Component", 0 },
 156         { DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
 157         { DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
 158         { DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
 159         { DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
 160         { DRM_MODE_CONNECTOR_TV, "TV", 0 },
 161 };
 162
 163 static struct drm_prop_enum_list drm_encoder_enum_list[] =
 164 {       { DRM_MODE_ENCODER_NONE, "None" },
 165         { DRM_MODE_ENCODER_DAC, "DAC" },
 166         { DRM_MODE_ENCODER_TMDS, "TMDS" },
 167         { DRM_MODE_ENCODER_LVDS, "LVDS" },
 168         { DRM_MODE_ENCODER_TVDAC, "TV" },
 169 };
 170
 171 char *drm_get_encoder_name(struct drm_encoder *encoder)
 172 {
 173         static char buf[32];
 174
 175         snprintf(buf, 32, "%s-%d",
 176                  drm_encoder_enum_list[encoder->encoder_type].name,
 177                  encoder->base.id);
 178         return buf;
 179 }
 180 EXPORT_SYMBOL(drm_get_encoder_name);
 181
 182 char *drm_get_connector_name(struct drm_connector *connector)
 183 {
 184         static char buf[32];
 185
 186         snprintf(buf, 32, "%s-%d",
 187                  drm_connector_enum_list[connector->connector_type].name,
 188                  connector->connector_type_id);
 189         return buf;
 190 }
 191 EXPORT_SYMBOL(drm_get_connector_name);
 192
 193 char *drm_get_connector_status_name(enum drm_connector_status status)
 194 {
 195         if (status == connector_status_connected)
 196                 return "connected";
 197         else if (status == connector_status_disconnected)
 198                 return "disconnected";
 199         else
 200                 return "unknown";
 201 }
 202
 203 /**
 204  * drm_mode_object_get - allocate a new identifier
 205  * @dev: DRM device
 206  * @ptr: object pointer, used to generate unique ID
 207  * @type: object type
 208  *
 209  * LOCKING:
 210  *
 211  * Create a unique identifier based on @ptr in @dev's identifier space.  Used
 212  * for tracking modes, CRTCs and connectors.
 213  *
 214  * RETURNS:
 215  * New unique (relative to other objects in @dev) integer identifier for the
 216  * object.
 217  */
 218 static int drm_mode_object_get(struct drm_device *dev,
 219                                struct drm_mode_object *obj, uint32_t obj_type)
 220 {
 221         int new_id = 0;
 222         int ret;
 223
 224 again:
 225         if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
 226                 DRM_ERROR("Ran out memory getting a mode number\n");
 227                 return -EINVAL;
 228         }
 229
 230         mutex_lock(&dev->mode_config.idr_mutex);
 231         ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
 232         mutex_unlock(&dev->mode_config.idr_mutex);
 233         if (ret == -EAGAIN)
 234                 goto again;
 235
 236         obj->id = new_id;
 237         obj->type = obj_type;
 238         return 0;
 239 }
 240
 241 /**
 242  * drm_mode_object_put - free an identifer
 243  * @dev: DRM device
 244  * @id: ID to free
 245  *
 246  * LOCKING:
 247  * Caller must hold DRM mode_config lock.
 248  *
 249  * Free @id from @dev's unique identifier pool.
 250  */
 251 static void drm_mode_object_put(struct drm_device *dev,
 252                                 struct drm_mode_object *object)
 253 {
 254         mutex_lock(&dev->mode_config.idr_mutex);
 255         idr_remove(&dev->mode_config.crtc_idr, object->id);
 256         mutex_unlock(&dev->mode_config.idr_mutex);
 257 }
 258
 259 void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type)
 260 {
 261         struct drm_mode_object *obj = NULL;
 262
 263         mutex_lock(&dev->mode_config.idr_mutex);
 264         obj = idr_find(&dev->mode_config.crtc_idr, id);
 265         if (!obj || (obj->type != type) || (obj->id != id))
 266                 obj = NULL;
 267         mutex_unlock(&dev->mode_config.idr_mutex);
 268
 269         return obj;
 270 }
 271 EXPORT_SYMBOL(drm_mode_object_find);
 272
 273 /**
 274  * drm_framebuffer_init - initialize a framebuffer
 275  * @dev: DRM device
 276  *
 277  * LOCKING:
 278  * Caller must hold mode config lock.
 279  *
 280  * Allocates an ID for the framebuffer's parent mode object, sets its mode
 281  * functions & device file and adds it to the master fd list.
 282  *
 283  * RETURNS:
 284  * Zero on success, error code on falure.
 285  */
 286 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
 287                          const struct drm_framebuffer_funcs *funcs)
 288 {
 289         int ret;
 290
 291         ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
 292         if (ret) {
 293                 return ret;
 294         }
 295
 296         fb->dev = dev;
 297         fb->funcs = funcs;
 298         dev->mode_config.num_fb++;
 299         list_add(&fb->head, &dev->mode_config.fb_list);
 300
 301         return 0;
 302 }
 303 EXPORT_SYMBOL(drm_framebuffer_init);
 304
 305 /**
 306  * drm_framebuffer_cleanup - remove a framebuffer object
 307  * @fb: framebuffer to remove
 308  *
 309  * LOCKING:
 310  * Caller must hold mode config lock.
 311  *
 312  * Scans all the CRTCs in @dev's mode_config.  If they're using @fb, removes
 313  * it, setting it to NULL.
 314  */
 315 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
 316 {
 317         struct drm_device *dev = fb->dev;
 318         struct drm_crtc *crtc;
 319         struct drm_mode_set set;
 320         int ret;
 321
 322         /* remove from any CRTC */
 323         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 324                 if (crtc->fb == fb) {
 325                         /* should turn off the crtc */
 326                         memset(&set, 0, sizeof(struct drm_mode_set));
 327                         set.crtc = crtc;
 328                         set.fb = NULL;
 329                         ret = crtc->funcs->set_config(&set);
 330                         if (ret)
 331                                 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
 332                 }
 333         }
 334
 335         drm_mode_object_put(dev, &fb->base);
 336         list_del(&fb->head);
 337         dev->mode_config.num_fb--;
 338 }
 339 EXPORT_SYMBOL(drm_framebuffer_cleanup);
 340
 341 /**
 342  * drm_crtc_init - Initialise a new CRTC object
 343  * @dev: DRM device
 344  * @crtc: CRTC object to init
 345  * @funcs: callbacks for the new CRTC
 346  *
 347  * LOCKING:
 348  * Caller must hold mode config lock.
 349  *
 350  * Inits a new object created as base part of an driver crtc object.
 351  */
 352 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
 353                    const struct drm_crtc_funcs *funcs)
 354 {
 355         crtc->dev = dev;
 356         crtc->funcs = funcs;
 357
 358         mutex_lock(&dev->mode_config.mutex);
 359         drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
 360
 361         list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
 362         dev->mode_config.num_crtc++;
 363         mutex_unlock(&dev->mode_config.mutex);
 364 }
 365 EXPORT_SYMBOL(drm_crtc_init);
 366
 367 /**
 368  * drm_crtc_cleanup - Cleans up the core crtc usage.
 369  * @crtc: CRTC to cleanup
 370  *
 371  * LOCKING:
 372  * Caller must hold mode config lock.
 373  *
 374  * Cleanup @crtc. Removes from drm modesetting space
 375  * does NOT free object, caller does that.
 376  */
 377 void drm_crtc_cleanup(struct drm_crtc *crtc)
 378 {
 379         struct drm_device *dev = crtc->dev;
 380
 381         if (crtc->gamma_store) {
 382                 kfree(crtc->gamma_store);
 383                 crtc->gamma_store = NULL;
 384         }
 385
 386         drm_mode_object_put(dev, &crtc->base);
 387         list_del(&crtc->head);
 388         dev->mode_config.num_crtc--;
 389 }
 390 EXPORT_SYMBOL(drm_crtc_cleanup);
 391
 392 /**
 393  * drm_mode_probed_add - add a mode to a connector's probed mode list
 394  * @connector: connector the new mode
 395  * @mode: mode data
 396  *
 397  * LOCKING:
 398  * Caller must hold mode config lock.
 399  *
 400  * Add @mode to @connector's mode list for later use.
 401  */
 402 void drm_mode_probed_add(struct drm_connector *connector,
 403                          struct drm_display_mode *mode)
 404 {
 405         list_add(&mode->head, &connector->probed_modes);
 406 }
 407 EXPORT_SYMBOL(drm_mode_probed_add);
 408
 409 /**
 410  * drm_mode_remove - remove and free a mode
 411  * @connector: connector list to modify
 412  * @mode: mode to remove
 413  *
 414  * LOCKING:
 415  * Caller must hold mode config lock.
 416  *
 417  * Remove @mode from @connector's mode list, then free it.
 418  */
 419 void drm_mode_remove(struct drm_connector *connector,
 420                      struct drm_display_mode *mode)
 421 {
 422         list_del(&mode->head);
 423         kfree(mode);
 424 }
 425 EXPORT_SYMBOL(drm_mode_remove);
 426
 427 /**
 428  * drm_connector_init - Init a preallocated connector
 429  * @dev: DRM device
 430  * @connector: the connector to init
 431  * @funcs: callbacks for this connector
 432  * @name: user visible name of the connector
 433  *
 434  * LOCKING:
 435  * Caller must hold @dev's mode_config lock.
 436  *
 437  * Initialises a preallocated connector. Connectors should be
 438  * subclassed as part of driver connector objects.
 439  */
 440 void drm_connector_init(struct drm_device *dev,
 441                      struct drm_connector *connector,
 442                      const struct drm_connector_funcs *funcs,
 443                      int connector_type)
 444 {
 445         mutex_lock(&dev->mode_config.mutex);
 446
 447         connector->dev = dev;
 448         connector->funcs = funcs;
 449         drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
 450         connector->connector_type = connector_type;
 451         connector->connector_type_id =
 452                 ++drm_connector_enum_list[connector_type].count; /* TODO */
 453         INIT_LIST_HEAD(&connector->user_modes);
 454         INIT_LIST_HEAD(&connector->probed_modes);
 455         INIT_LIST_HEAD(&connector->modes);
 456         connector->edid_blob_ptr = NULL;
 457
 458         list_add_tail(&connector->head, &dev->mode_config.connector_list);
 459         dev->mode_config.num_connector++;
 460
 461         drm_connector_attach_property(connector,
 462                                       dev->mode_config.edid_property, 0);
 463
 464         drm_connector_attach_property(connector,
 465                                       dev->mode_config.dpms_property, 0);
 466
 467         mutex_unlock(&dev->mode_config.mutex);
 468 }
 469 EXPORT_SYMBOL(drm_connector_init);
 470
 471 /**
 472  * drm_connector_cleanup - cleans up an initialised connector
 473  * @connector: connector to cleanup
 474  *
 475  * LOCKING:
 476  * Caller must hold @dev's mode_config lock.
 477  *
 478  * Cleans up the connector but doesn't free the object.
 479  */
 480 void drm_connector_cleanup(struct drm_connector *connector)
 481 {
 482         struct drm_device *dev = connector->dev;
 483         struct drm_display_mode *mode, *t;
 484
 485         list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
 486                 drm_mode_remove(connector, mode);
 487
 488         list_for_each_entry_safe(mode, t, &connector->modes, head)
 489                 drm_mode_remove(connector, mode);
 490
 491         list_for_each_entry_safe(mode, t, &connector->user_modes, head)
 492                 drm_mode_remove(connector, mode);
 493
 494         kfree(connector->fb_helper_private);
 495         mutex_lock(&dev->mode_config.mutex);
 496         drm_mode_object_put(dev, &connector->base);
 497         list_del(&connector->head);
 498         mutex_unlock(&dev->mode_config.mutex);
 499 }
 500 EXPORT_SYMBOL(drm_connector_cleanup);
 501
 502 void drm_encoder_init(struct drm_device *dev,
 503                       struct drm_encoder *encoder,
 504                       const struct drm_encoder_funcs *funcs,
 505                       int encoder_type)
 506 {
 507         mutex_lock(&dev->mode_config.mutex);
 508
 509         encoder->dev = dev;
 510
 511         drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
 512         encoder->encoder_type = encoder_type;
 513         encoder->funcs = funcs;
 514
 515         list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
 516         dev->mode_config.num_encoder++;
 517
 518         mutex_unlock(&dev->mode_config.mutex);
 519 }
 520 EXPORT_SYMBOL(drm_encoder_init);
 521
 522 void drm_encoder_cleanup(struct drm_encoder *encoder)
 523 {
 524         struct drm_device *dev = encoder->dev;
 525         mutex_lock(&dev->mode_config.mutex);
 526         drm_mode_object_put(dev, &encoder->base);
 527         list_del(&encoder->head);
 528         mutex_unlock(&dev->mode_config.mutex);
 529 }
 530 EXPORT_SYMBOL(drm_encoder_cleanup);
 531
 532 /**
 533  * drm_mode_create - create a new display mode
 534  * @dev: DRM device
 535  *
 536  * LOCKING:
 537  * Caller must hold DRM mode_config lock.
 538  *
 539  * Create a new drm_display_mode, give it an ID, and return it.
 540  *
 541  * RETURNS:
 542  * Pointer to new mode on success, NULL on error.
 543  */
 544 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
 545 {
 546         struct drm_display_mode *nmode;
 547
 548         nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
 549         if (!nmode)
 550                 return NULL;
 551
 552         drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
 553         return nmode;
 554 }
 555 EXPORT_SYMBOL(drm_mode_create);
 556
 557 /**
 558  * drm_mode_destroy - remove a mode
 559  * @dev: DRM device
 560  * @mode: mode to remove
 561  *
 562  * LOCKING:
 563  * Caller must hold mode config lock.
 564  *
 565  * Free @mode's unique identifier, then free it.
 566  */
 567 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
 568 {
 569         drm_mode_object_put(dev, &mode->base);
 570
 571         kfree(mode);
 572 }
 573 EXPORT_SYMBOL(drm_mode_destroy);
 574
 575 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 576 {
 577         struct drm_property *edid;
 578         struct drm_property *dpms;
 579         int i;
 580
 581         /*
 582          * Standard properties (apply to all connectors)
 583          */
 584         edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
 585                                    DRM_MODE_PROP_IMMUTABLE,
 586                                    "EDID", 0);
 587         dev->mode_config.edid_property = edid;
 588
 589         dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 590                                    "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
 591         for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
 592                 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
 593                                       drm_dpms_enum_list[i].name);
 594         dev->mode_config.dpms_property = dpms;
 595
 596         return 0;
 597 }
 598
 599 /**
 600  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
 601  * @dev: DRM device
 602  *
 603  * Called by a driver the first time a DVI-I connector is made.
 604  */
 605 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
 606 {
 607         struct drm_property *dvi_i_selector;
 608         struct drm_property *dvi_i_subconnector;
 609         int i;
 610
 611         if (dev->mode_config.dvi_i_select_subconnector_property)
 612                 return 0;
 613
 614         dvi_i_selector =
 615                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 616                                     "select subconnector",
 617                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
 618         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
 619                 drm_property_add_enum(dvi_i_selector, i,
 620                                       drm_dvi_i_select_enum_list[i].type,
 621                                       drm_dvi_i_select_enum_list[i].name);
 622         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
 623
 624         dvi_i_subconnector =
 625                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 626                                     DRM_MODE_PROP_IMMUTABLE,
 627                                     "subconnector",
 628                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
 629         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
 630                 drm_property_add_enum(dvi_i_subconnector, i,
 631                                       drm_dvi_i_subconnector_enum_list[i].type,
 632                                       drm_dvi_i_subconnector_enum_list[i].name);
 633         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
 634
 635         return 0;
 636 }
 637 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
 638
 639 /**
 640  * drm_create_tv_properties - create TV specific connector properties
 641  * @dev: DRM device
 642  * @num_modes: number of different TV formats (modes) supported
 643  * @modes: array of pointers to strings containing name of each format
 644  *
 645  * Called by a driver's TV initialization routine, this function creates
 646  * the TV specific connector properties for a given device.  Caller is
 647  * responsible for allocating a list of format names and passing them to
 648  * this routine.
 649  */
 650 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
 651                                   char *modes[])
 652 {
 653         struct drm_property *tv_selector;
 654         struct drm_property *tv_subconnector;
 655         int i;
 656
 657         if (dev->mode_config.tv_select_subconnector_property)
 658                 return 0;
 659
 660         /*
 661          * Basic connector properties
 662          */
 663         tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 664                                           "select subconnector",
 665                                           ARRAY_SIZE(drm_tv_select_enum_list));
 666         for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
 667                 drm_property_add_enum(tv_selector, i,
 668                                       drm_tv_select_enum_list[i].type,
 669                                       drm_tv_select_enum_list[i].name);
 670         dev->mode_config.tv_select_subconnector_property = tv_selector;
 671
 672         tv_subconnector =
 673                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 674                                     DRM_MODE_PROP_IMMUTABLE, "subconnector",
 675                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
 676         for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
 677                 drm_property_add_enum(tv_subconnector, i,
 678                                       drm_tv_subconnector_enum_list[i].type,
 679                                       drm_tv_subconnector_enum_list[i].name);
 680         dev->mode_config.tv_subconnector_property = tv_subconnector;
 681
 682         /*
 683          * Other, TV specific properties: margins & TV modes.
 684          */
 685         dev->mode_config.tv_left_margin_property =
 686                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 687                                     "left margin", 2);
 688         dev->mode_config.tv_left_margin_property->values[0] = 0;
 689         dev->mode_config.tv_left_margin_property->values[1] = 100;
 690
 691         dev->mode_config.tv_right_margin_property =
 692                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 693                                     "right margin", 2);
 694         dev->mode_config.tv_right_margin_property->values[0] = 0;
 695         dev->mode_config.tv_right_margin_property->values[1] = 100;
 696
 697         dev->mode_config.tv_top_margin_property =
 698                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 699                                     "top margin", 2);
 700         dev->mode_config.tv_top_margin_property->values[0] = 0;
 701         dev->mode_config.tv_top_margin_property->values[1] = 100;
 702
 703         dev->mode_config.tv_bottom_margin_property =
 704                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 705                                     "bottom margin", 2);
 706         dev->mode_config.tv_bottom_margin_property->values[0] = 0;
 707         dev->mode_config.tv_bottom_margin_property->values[1] = 100;
 708
 709         dev->mode_config.tv_mode_property =
 710                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 711                                     "mode", num_modes);
 712         for (i = 0; i < num_modes; i++)
 713                 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
 714                                       i, modes[i]);
 715
 716         dev->mode_config.tv_brightness_property =
 717                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 718                                     "brightness", 2);
 719         dev->mode_config.tv_brightness_property->values[0] = 0;
 720         dev->mode_config.tv_brightness_property->values[1] = 100;
 721
 722         dev->mode_config.tv_contrast_property =
 723                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 724                                     "contrast", 2);
 725         dev->mode_config.tv_contrast_property->values[0] = 0;
 726         dev->mode_config.tv_contrast_property->values[1] = 100;
 727
 728         dev->mode_config.tv_flicker_reduction_property =
 729                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 730                                     "flicker reduction", 2);
 731         dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
 732         dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
 733
 734         dev->mode_config.tv_overscan_property =
 735                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 736                                     "overscan", 2);
 737         dev->mode_config.tv_overscan_property->values[0] = 0;
 738         dev->mode_config.tv_overscan_property->values[1] = 100;
 739
 740         dev->mode_config.tv_saturation_property =
 741                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 742                                     "saturation", 2);
 743         dev->mode_config.tv_saturation_property->values[0] = 0;
 744         dev->mode_config.tv_saturation_property->values[1] = 100;
 745
 746         dev->mode_config.tv_hue_property =
 747                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 748                                     "hue", 2);
 749         dev->mode_config.tv_hue_property->values[0] = 0;
 750         dev->mode_config.tv_hue_property->values[1] = 100;
 751
 752         return 0;
 753 }
 754 EXPORT_SYMBOL(drm_mode_create_tv_properties);
 755
 756 /**
 757  * drm_mode_create_scaling_mode_property - create scaling mode property
 758  * @dev: DRM device
 759  *
 760  * Called by a driver the first time it's needed, must be attached to desired
 761  * connectors.
 762  */
 763 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
 764 {
 765         struct drm_property *scaling_mode;
 766         int i;
 767
 768         if (dev->mode_config.scaling_mode_property)
 769                 return 0;
 770
 771         scaling_mode =
 772                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
 773                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
 774         for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
 775                 drm_property_add_enum(scaling_mode, i,
 776                                       drm_scaling_mode_enum_list[i].type,
 777                                       drm_scaling_mode_enum_list[i].name);
 778
 779         dev->mode_config.scaling_mode_property = scaling_mode;
 780
 781         return 0;
 782 }
 783 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
 784
 785 /**
 786  * drm_mode_create_dithering_property - create dithering property
 787  * @dev: DRM device
 788  *
 789  * Called by a driver the first time it's needed, must be attached to desired
 790  * connectors.
 791  */
 792 int drm_mode_create_dithering_property(struct drm_device *dev)
 793 {
 794         struct drm_property *dithering_mode;
 795         int i;
 796
 797         if (dev->mode_config.dithering_mode_property)
 798                 return 0;
 799
 800         dithering_mode =
 801                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
 802                                     ARRAY_SIZE(drm_dithering_mode_enum_list));
 803         for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
 804                 drm_property_add_enum(dithering_mode, i,
 805                                       drm_dithering_mode_enum_list[i].type,
 806                                       drm_dithering_mode_enum_list[i].name);
 807         dev->mode_config.dithering_mode_property = dithering_mode;
 808
 809         return 0;
 810 }
 811 EXPORT_SYMBOL(drm_mode_create_dithering_property);
 812
 813 /**
 814  * drm_mode_create_dirty_property - create dirty property
 815  * @dev: DRM device
 816  *
 817  * Called by a driver the first time it's needed, must be attached to desired
 818  * connectors.
 819  */
 820 int drm_mode_create_dirty_info_property(struct drm_device *dev)
 821 {
 822         struct drm_property *dirty_info;
 823         int i;
 824
 825         if (dev->mode_config.dirty_info_property)
 826                 return 0;
 827
 828         dirty_info =
 829                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 830                                     DRM_MODE_PROP_IMMUTABLE,
 831                                     "dirty",
 832                                     ARRAY_SIZE(drm_dirty_info_enum_list));
 833         for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
 834                 drm_property_add_enum(dirty_info, i,
 835                                       drm_dirty_info_enum_list[i].type,
 836                                       drm_dirty_info_enum_list[i].name);
 837         dev->mode_config.dirty_info_property = dirty_info;
 838
 839         return 0;
 840 }
 841 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
 842
 843 /**
 844  * drm_mode_config_init - initialize DRM mode_configuration structure
 845  * @dev: DRM device
 846  *
 847  * LOCKING:
 848  * None, should happen single threaded at init time.
 849  *
 850  * Initialize @dev's mode_config structure, used for tracking the graphics
 851  * configuration of @dev.
 852  */
 853 void drm_mode_config_init(struct drm_device *dev)
 854 {
 855         mutex_init(&dev->mode_config.mutex);
 856         mutex_init(&dev->mode_config.idr_mutex);
 857         INIT_LIST_HEAD(&dev->mode_config.fb_list);
 858         INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
 859         INIT_LIST_HEAD(&dev->mode_config.crtc_list);
 860         INIT_LIST_HEAD(&dev->mode_config.connector_list);
 861         INIT_LIST_HEAD(&dev->mode_config.encoder_list);
 862         INIT_LIST_HEAD(&dev->mode_config.property_list);
 863         INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
 864         idr_init(&dev->mode_config.crtc_idr);
 865
 866         mutex_lock(&dev->mode_config.mutex);
 867         drm_mode_create_standard_connector_properties(dev);
 868         mutex_unlock(&dev->mode_config.mutex);
 869
 870         /* Just to be sure */
 871         dev->mode_config.num_fb = 0;
 872         dev->mode_config.num_connector = 0;
 873         dev->mode_config.num_crtc = 0;
 874         dev->mode_config.num_encoder = 0;
 875 }
 876 EXPORT_SYMBOL(drm_mode_config_init);
 877
 878 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
 879 {
 880         uint32_t total_objects = 0;
 881
 882         total_objects += dev->mode_config.num_crtc;
 883         total_objects += dev->mode_config.num_connector;
 884         total_objects += dev->mode_config.num_encoder;
 885
 886         if (total_objects == 0)
 887                 return -EINVAL;
 888
 889         group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
 890         if (!group->id_list)
 891                 return -ENOMEM;
 892
 893         group->num_crtcs = 0;
 894         group->num_connectors = 0;
 895         group->num_encoders = 0;
 896         return 0;
 897 }
 898
 899 int drm_mode_group_init_legacy_group(struct drm_device *dev,
 900                                      struct drm_mode_group *group)
 901 {
 902         struct drm_crtc *crtc;
 903         struct drm_encoder *encoder;
 904         struct drm_connector *connector;
 905         int ret;
 906
 907         if ((ret = drm_mode_group_init(dev, group)))
 908                 return ret;
 909
 910         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 911                 group->id_list[group->num_crtcs++] = crtc->base.id;
 912
 913         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
 914                 group->id_list[group->num_crtcs + group->num_encoders++] =
 915                 encoder->base.id;
 916
 917         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 918                 group->id_list[group->num_crtcs + group->num_encoders +
 919                                group->num_connectors++] = connector->base.id;
 920
 921         return 0;
 922 }
 923
 924 /**
 925  * drm_mode_config_cleanup - free up DRM mode_config info
 926  * @dev: DRM device
 927  *
 928  * LOCKING:
 929  * Caller must hold mode config lock.
 930  *
 931  * Free up all the connectors and CRTCs associated with this DRM device, then
 932  * free up the framebuffers and associated buffer objects.
 933  *
 934  * FIXME: cleanup any dangling user buffer objects too
 935  */
 936 void drm_mode_config_cleanup(struct drm_device *dev)
 937 {
 938         struct drm_connector *connector, *ot;
 939         struct drm_crtc *crtc, *ct;
 940         struct drm_encoder *encoder, *enct;
 941         struct drm_framebuffer *fb, *fbt;
 942         struct drm_property *property, *pt;
 943
 944         list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
 945                                  head) {
 946                 encoder->funcs->destroy(encoder);
 947         }
 948
 949         list_for_each_entry_safe(connector, ot,
 950                                  &dev->mode_config.connector_list, head) {
 951                 connector->funcs->destroy(connector);
 952         }
 953
 954         list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
 955                                  head) {
 956                 drm_property_destroy(dev, property);
 957         }
 958
 959         list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
 960                 fb->funcs->destroy(fb);
 961         }
 962
 963         list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
 964                 crtc->funcs->destroy(crtc);
 965         }
 966
 967 }
 968 EXPORT_SYMBOL(drm_mode_config_cleanup);
 969
 970 /**
 971  * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
 972  * @out: drm_mode_modeinfo struct to return to the user
 973  * @in: drm_display_mode to use
 974  *
 975  * LOCKING:
 976  * None.
 977  *
 978  * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
 979  * the user.
 980  */
 981 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
 982                                struct drm_display_mode *in)
 983 {
 984         out->clock = in->clock;
 985         out->hdisplay = in->hdisplay;
 986         out->hsync_start = in->hsync_start;
 987         out->hsync_end = in->hsync_end;
 988         out->htotal = in->htotal;
 989         out->hskew = in->hskew;
 990         out->vdisplay = in->vdisplay;
 991         out->vsync_start = in->vsync_start;
 992         out->vsync_end = in->vsync_end;
 993         out->vtotal = in->vtotal;
 994         out->vscan = in->vscan;
 995         out->vrefresh = in->vrefresh;
 996         out->flags = in->flags;
 997         out->type = in->type;
 998         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
 999         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1000 }
1001
1002 /**
1003  * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1004  * @out: drm_display_mode to return to the user
1005  * @in: drm_mode_modeinfo to use
1006  *
1007  * LOCKING:
1008  * None.
1009  *
1010  * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1011  * the caller.
1012  */
1013 void drm_crtc_convert_umode(struct drm_display_mode *out,
1014                             struct drm_mode_modeinfo *in)
1015 {
1016         out->clock = in->clock;
1017         out->hdisplay = in->hdisplay;
1018         out->hsync_start = in->hsync_start;
1019         out->hsync_end = in->hsync_end;
1020         out->htotal = in->htotal;
1021         out->hskew = in->hskew;
1022         out->vdisplay = in->vdisplay;
1023         out->vsync_start = in->vsync_start;
1024         out->vsync_end = in->vsync_end;
1025         out->vtotal = in->vtotal;
1026         out->vscan = in->vscan;
1027         out->vrefresh = in->vrefresh;
1028         out->flags = in->flags;
1029         out->type = in->type;
1030         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1031         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1032 }
1033
1034 /**
1035  * drm_mode_getresources - get graphics configuration
1036  * @inode: inode from the ioctl
1037  * @filp: file * from the ioctl
1038  * @cmd: cmd from ioctl
1039  * @arg: arg from ioctl
1040  *
1041  * LOCKING:
1042  * Takes mode config lock.
1043  *
1044  * Construct a set of configuration description structures and return
1045  * them to the user, including CRTC, connector and framebuffer configuration.
1046  *
1047  * Called by the user via ioctl.
1048  *
1049  * RETURNS:
1050  * Zero on success, errno on failure.
1051  */
1052 int drm_mode_getresources(struct drm_device *dev, void *data,
1053                           struct drm_file *file_priv)
1054 {
1055         struct drm_mode_card_res *card_res = data;
1056         struct list_head *lh;
1057         struct drm_framebuffer *fb;
1058         struct drm_connector *connector;
1059         struct drm_crtc *crtc;
1060         struct drm_encoder *encoder;
1061         int ret = 0;
1062         int connector_count = 0;
1063         int crtc_count = 0;
1064         int fb_count = 0;
1065         int encoder_count = 0;
1066         int copied = 0, i;
1067         uint32_t __user *fb_id;
1068         uint32_t __user *crtc_id;
1069         uint32_t __user *connector_id;
1070         uint32_t __user *encoder_id;
1071         struct drm_mode_group *mode_group;
1072
1073         mutex_lock(&dev->mode_config.mutex);
1074
1075         /*
1076          * For the non-control nodes we need to limit the list of resources
1077          * by IDs in the group list for this node
1078          */
1079         list_for_each(lh, &file_priv->fbs)
1080                 fb_count++;
1081
1082         mode_group = &file_priv->master->minor->mode_group;
1083         if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1084
1085                 list_for_each(lh, &dev->mode_config.crtc_list)
1086                         crtc_count++;
1087
1088                 list_for_each(lh, &dev->mode_config.connector_list)
1089                         connector_count++;
1090
1091                 list_for_each(lh, &dev->mode_config.encoder_list)
1092                         encoder_count++;
1093         } else {
1094
1095                 crtc_count = mode_group->num_crtcs;
1096                 connector_count = mode_group->num_connectors;
1097                 encoder_count = mode_group->num_encoders;
1098         }
1099
1100         card_res->max_height = dev->mode_config.max_height;
1101         card_res->min_height = dev->mode_config.min_height;
1102         card_res->max_width = dev->mode_config.max_width;
1103         card_res->min_width = dev->mode_config.min_width;
1104
1105         /* handle this in 4 parts */
1106         /* FBs */
1107         if (card_res->count_fbs >= fb_count) {
1108                 copied = 0;
1109                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1110                 list_for_each_entry(fb, &file_priv->fbs, head) {
1111                         if (put_user(fb->base.id, fb_id + copied)) {
1112                                 ret = -EFAULT;
1113                                 goto out;
1114                         }
1115                         copied++;
1116                 }
1117         }
1118         card_res->count_fbs = fb_count;
1119
1120         /* CRTCs */
1121         if (card_res->count_crtcs >= crtc_count) {
1122                 copied = 0;
1123                 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1124                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1125                         list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1126                                             head) {
1127                                 DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1128                                 if (put_user(crtc->base.id, crtc_id + copied)) {
1129                                         ret = -EFAULT;
1130                                         goto out;
1131                                 }
1132                                 copied++;
1133                         }
1134                 } else {
1135                         for (i = 0; i < mode_group->num_crtcs; i++) {
1136                                 if (put_user(mode_group->id_list[i],
1137                                              crtc_id + copied)) {
1138                                         ret = -EFAULT;
1139                                         goto out;
1140                                 }
1141                                 copied++;
1142                         }
1143                 }
1144         }
1145         card_res->count_crtcs = crtc_count;
1146
1147         /* Encoders */
1148         if (card_res->count_encoders >= encoder_count) {
1149                 copied = 0;
1150                 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1151                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1152                         list_for_each_entry(encoder,
1153                                             &dev->mode_config.encoder_list,
1154                                             head) {
1155                                 DRM_DEBUG_KMS("ENCODER ID is %d\n",
1156                                           encoder->base.id);
1157                                 if (put_user(encoder->base.id, encoder_id +
1158                                              copied)) {
1159                                         ret = -EFAULT;
1160                                         goto out;
1161                                 }
1162                                 copied++;
1163                         }
1164                 } else {
1165                         for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1166                                 if (put_user(mode_group->id_list[i],
1167                                              encoder_id + copied)) {
1168                                         ret = -EFAULT;
1169                                         goto out;
1170                                 }
1171                                 copied++;
1172                         }
1173
1174                 }
1175         }
1176         card_res->count_encoders = encoder_count;
1177
1178         /* Connectors */
1179         if (card_res->count_connectors >= connector_count) {
1180                 copied = 0;
1181                 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1182                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1183                         list_for_each_entry(connector,
1184                                             &dev->mode_config.connector_list,
1185                                             head) {
1186                                 DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1187                                           connector->base.id);
1188                                 if (put_user(connector->base.id,
1189                                              connector_id + copied)) {
1190                                         ret = -EFAULT;
1191                                         goto out;
1192                                 }
1193                                 copied++;
1194                         }
1195                 } else {
1196                         int start = mode_group->num_crtcs +
1197                                 mode_group->num_encoders;
1198                         for (i = start; i < start + mode_group->num_connectors; i++) {
1199                                 if (put_user(mode_group->id_list[i],
1200                                              connector_id + copied)) {
1201                                         ret = -EFAULT;
1202                                         goto out;
1203                                 }
1204                                 copied++;
1205                         }
1206                 }
1207         }
1208         card_res->count_connectors = connector_count;
1209
1210         DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1211                   card_res->count_connectors, card_res->count_encoders);
1212
1213 out:
1214         mutex_unlock(&dev->mode_config.mutex);
1215         return ret;
1216 }
1217
1218 /**
1219  * drm_mode_getcrtc - get CRTC configuration
1220  * @inode: inode from the ioctl
1221  * @filp: file * from the ioctl
1222  * @cmd: cmd from ioctl
1223  * @arg: arg from ioctl
1224  *
1225  * LOCKING:
1226  * Caller? (FIXME)
1227  *
1228  * Construct a CRTC configuration structure to return to the user.
1229  *
1230  * Called by the user via ioctl.
1231  *
1232  * RETURNS:
1233  * Zero on success, errno on failure.
1234  */
1235 int drm_mode_getcrtc(struct drm_device *dev,
1236                      void *data, struct drm_file *file_priv)
1237 {
1238         struct drm_mode_crtc *crtc_resp = data;
1239         struct drm_crtc *crtc;
1240         struct drm_mode_object *obj;
1241         int ret = 0;
1242
1243         mutex_lock(&dev->mode_config.mutex);
1244
1245         obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1246                                    DRM_MODE_OBJECT_CRTC);
1247         if (!obj) {
1248                 ret = -EINVAL;
1249                 goto out;
1250         }
1251         crtc = obj_to_crtc(obj);
1252
1253         crtc_resp->x = crtc->x;
1254         crtc_resp->y = crtc->y;
1255         crtc_resp->gamma_size = crtc->gamma_size;
1256         if (crtc->fb)
1257                 crtc_resp->fb_id = crtc->fb->base.id;
1258         else
1259                 crtc_resp->fb_id = 0;
1260
1261         if (crtc->enabled) {
1262
1263                 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1264                 crtc_resp->mode_valid = 1;
1265
1266         } else {
1267                 crtc_resp->mode_valid = 0;
1268         }
1269
1270 out:
1271         mutex_unlock(&dev->mode_config.mutex);
1272         return ret;
1273 }
1274
1275 /**
1276  * drm_mode_getconnector - get connector configuration
1277  * @inode: inode from the ioctl
1278  * @filp: file * from the ioctl
1279  * @cmd: cmd from ioctl
1280  * @arg: arg from ioctl
1281  *
1282  * LOCKING:
1283  * Caller? (FIXME)
1284  *
1285  * Construct a connector configuration structure to return to the user.
1286  *
1287  * Called by the user via ioctl.
1288  *
1289  * RETURNS:
1290  * Zero on success, errno on failure.
1291  */
1292 int drm_mode_getconnector(struct drm_device *dev, void *data,
1293                           struct drm_file *file_priv)
1294 {
1295         struct drm_mode_get_connector *out_resp = data;
1296         struct drm_mode_object *obj;
1297         struct drm_connector *connector;
1298         struct drm_display_mode *mode;
1299         int mode_count = 0;
1300         int props_count = 0;
1301         int encoders_count = 0;
1302         int ret = 0;
1303         int copied = 0;
1304         int i;
1305         struct drm_mode_modeinfo u_mode;
1306         struct drm_mode_modeinfo __user *mode_ptr;
1307         uint32_t __user *prop_ptr;
1308         uint64_t __user *prop_values;
1309         uint32_t __user *encoder_ptr;
1310
1311         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1312
1313         DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1314
1315         mutex_lock(&dev->mode_config.mutex);
1316
1317         obj = drm_mode_object_find(dev, out_resp->connector_id,
1318                                    DRM_MODE_OBJECT_CONNECTOR);
1319         if (!obj) {
1320                 ret = -EINVAL;
1321                 goto out;
1322         }
1323         connector = obj_to_connector(obj);
1324
1325         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1326                 if (connector->property_ids[i] != 0) {
1327                         props_count++;
1328                 }
1329         }
1330
1331         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1332                 if (connector->encoder_ids[i] != 0) {
1333                         encoders_count++;
1334                 }
1335         }
1336
1337         if (out_resp->count_modes == 0) {
1338                 connector->funcs->fill_modes(connector,
1339                                              dev->mode_config.max_width,
1340                                              dev->mode_config.max_height);
1341         }
1342
1343         /* delayed so we get modes regardless of pre-fill_modes state */
1344         list_for_each_entry(mode, &connector->modes, head)
1345                 mode_count++;
1346
1347         out_resp->connector_id = connector->base.id;
1348         out_resp->connector_type = connector->connector_type;
1349         out_resp->connector_type_id = connector->connector_type_id;
1350         out_resp->mm_width = connector->display_info.width_mm;
1351         out_resp->mm_height = connector->display_info.height_mm;
1352         out_resp->subpixel = connector->display_info.subpixel_order;
1353         out_resp->connection = connector->status;
1354         if (connector->encoder)
1355                 out_resp->encoder_id = connector->encoder->base.id;
1356         else
1357                 out_resp->encoder_id = 0;
1358
1359         /*
1360          * This ioctl is called twice, once to determine how much space is
1361          * needed, and the 2nd time to fill it.
1362          */
1363         if ((out_resp->count_modes >= mode_count) && mode_count) {
1364                 copied = 0;
1365                 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1366                 list_for_each_entry(mode, &connector->modes, head) {
1367                         drm_crtc_convert_to_umode(&u_mode, mode);
1368                         if (copy_to_user(mode_ptr + copied,
1369                                          &u_mode, sizeof(u_mode))) {
1370                                 ret = -EFAULT;
1371                                 goto out;
1372                         }
1373                         copied++;
1374                 }
1375         }
1376         out_resp->count_modes = mode_count;
1377
1378         if ((out_resp->count_props >= props_count) && props_count) {
1379                 copied = 0;
1380                 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1381                 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1382                 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1383                         if (connector->property_ids[i] != 0) {
1384                                 if (put_user(connector->property_ids[i],
1385                                              prop_ptr + copied)) {
1386                                         ret = -EFAULT;
1387                                         goto out;
1388                                 }
1389
1390                                 if (put_user(connector->property_values[i],
1391                                              prop_values + copied)) {
1392                                         ret = -EFAULT;
1393                                         goto out;
1394                                 }
1395                                 copied++;
1396                         }
1397                 }
1398         }
1399         out_resp->count_props = props_count;
1400
1401         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1402                 copied = 0;
1403                 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1404                 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1405                         if (connector->encoder_ids[i] != 0) {
1406                                 if (put_user(connector->encoder_ids[i],
1407                                              encoder_ptr + copied)) {
1408                                         ret = -EFAULT;
1409                                         goto out;
1410                                 }
1411                                 copied++;
1412                         }
1413                 }
1414         }
1415         out_resp->count_encoders = encoders_count;
1416
1417 out:
1418         mutex_unlock(&dev->mode_config.mutex);
1419         return ret;
1420 }
1421
1422 int drm_mode_getencoder(struct drm_device *dev, void *data,
1423                         struct drm_file *file_priv)
1424 {
1425         struct drm_mode_get_encoder *enc_resp = data;
1426         struct drm_mode_object *obj;
1427         struct drm_encoder *encoder;
1428         int ret = 0;
1429
1430         mutex_lock(&dev->mode_config.mutex);
1431         obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1432                                    DRM_MODE_OBJECT_ENCODER);
1433         if (!obj) {
1434                 ret = -EINVAL;
1435                 goto out;
1436         }
1437         encoder = obj_to_encoder(obj);
1438
1439         if (encoder->crtc)
1440                 enc_resp->crtc_id = encoder->crtc->base.id;
1441         else
1442                 enc_resp->crtc_id = 0;
1443         enc_resp->encoder_type = encoder->encoder_type;
1444         enc_resp->encoder_id = encoder->base.id;
1445         enc_resp->possible_crtcs = encoder->possible_crtcs;
1446         enc_resp->possible_clones = encoder->possible_clones;
1447
1448 out:
1449         mutex_unlock(&dev->mode_config.mutex);
1450         return ret;
1451 }
1452
1453 /**
1454  * drm_mode_setcrtc - set CRTC configuration
1455  * @inode: inode from the ioctl
1456  * @filp: file * from the ioctl
1457  * @cmd: cmd from ioctl
1458  * @arg: arg from ioctl
1459  *
1460  * LOCKING:
1461  * Caller? (FIXME)
1462  *
1463  * Build a new CRTC configuration based on user request.
1464  *
1465  * Called by the user via ioctl.
1466  *
1467  * RETURNS:
1468  * Zero on success, errno on failure.
1469  */
1470 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1471                      struct drm_file *file_priv)
1472 {
1473         struct drm_mode_config *config = &dev->mode_config;
1474         struct drm_mode_crtc *crtc_req = data;
1475         struct drm_mode_object *obj;
1476         struct drm_crtc *crtc, *crtcfb;
1477         struct drm_connector **connector_set = NULL, *connector;
1478         struct drm_framebuffer *fb = NULL;
1479         struct drm_display_mode *mode = NULL;
1480         struct drm_mode_set set;
1481         uint32_t __user *set_connectors_ptr;
1482         int ret = 0;
1483         int i;
1484
1485         mutex_lock(&dev->mode_config.mutex);
1486         obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1487                                    DRM_MODE_OBJECT_CRTC);
1488         if (!obj) {
1489                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1490                 ret = -EINVAL;
1491                 goto out;
1492         }
1493         crtc = obj_to_crtc(obj);
1494
1495         if (crtc_req->mode_valid) {
1496                 /* If we have a mode we need a framebuffer. */
1497                 /* If we pass -1, set the mode with the currently bound fb */
1498                 if (crtc_req->fb_id == -1) {
1499                         list_for_each_entry(crtcfb,
1500                                             &dev->mode_config.crtc_list, head) {
1501                                 if (crtcfb == crtc) {
1502                                         DRM_DEBUG_KMS("Using current fb for "
1503                                                         "setmode\n");
1504                                         fb = crtc->fb;
1505                                 }
1506                         }
1507                 } else {
1508                         obj = drm_mode_object_find(dev, crtc_req->fb_id,
1509                                                    DRM_MODE_OBJECT_FB);
1510                         if (!obj) {
1511                                 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1512                                                 crtc_req->fb_id);
1513                                 ret = -EINVAL;
1514                                 goto out;
1515                         }
1516                         fb = obj_to_fb(obj);
1517                 }
1518
1519                 mode = drm_mode_create(dev);
1520                 drm_crtc_convert_umode(mode, &crtc_req->mode);
1521                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1522         }
1523
1524         if (crtc_req->count_connectors == 0 && mode) {
1525                 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1526                 ret = -EINVAL;
1527                 goto out;
1528         }
1529
1530         if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1531                 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1532                           crtc_req->count_connectors);
1533                 ret = -EINVAL;
1534                 goto out;
1535         }
1536
1537         if (crtc_req->count_connectors > 0) {
1538                 u32 out_id;
1539
1540                 /* Avoid unbounded kernel memory allocation */
1541                 if (crtc_req->count_connectors > config->num_connector) {
1542                         ret = -EINVAL;
1543                         goto out;
1544                 }
1545
1546                 connector_set = kmalloc(crtc_req->count_connectors *
1547                                         sizeof(struct drm_connector *),
1548                                         GFP_KERNEL);
1549                 if (!connector_set) {
1550                         ret = -ENOMEM;
1551                         goto out;
1552                 }
1553
1554                 for (i = 0; i < crtc_req->count_connectors; i++) {
1555                         set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1556                         if (get_user(out_id, &set_connectors_ptr[i])) {
1557                                 ret = -EFAULT;
1558                                 goto out;
1559                         }
1560
1561                         obj = drm_mode_object_find(dev, out_id,
1562                                                    DRM_MODE_OBJECT_CONNECTOR);
1563                         if (!obj) {
1564                                 DRM_DEBUG_KMS("Connector id %d unknown\n",
1565                                                 out_id);
1566                                 ret = -EINVAL;
1567                                 goto out;
1568                         }
1569                         connector = obj_to_connector(obj);
1570
1571                         connector_set[i] = connector;
1572                 }
1573         }
1574
1575         set.crtc = crtc;
1576         set.x = crtc_req->x;
1577         set.y = crtc_req->y;
1578         set.mode = mode;
1579         set.connectors = connector_set;
1580         set.num_connectors = crtc_req->count_connectors;
1581         set.fb = fb;
1582         ret = crtc->funcs->set_config(&set);
1583
1584 out:
1585         kfree(connector_set);
1586         mutex_unlock(&dev->mode_config.mutex);
1587         return ret;
1588 }
1589
1590 int drm_mode_cursor_ioctl(struct drm_device *dev,
1591                         void *data, struct drm_file *file_priv)
1592 {
1593         struct drm_mode_cursor *req = data;
1594         struct drm_mode_object *obj;
1595         struct drm_crtc *crtc;
1596         int ret = 0;
1597
1598         if (!req->flags) {
1599                 DRM_ERROR("no operation set\n");
1600                 return -EINVAL;
1601         }
1602
1603         mutex_lock(&dev->mode_config.mutex);
1604         obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1605         if (!obj) {
1606                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1607                 ret = -EINVAL;
1608                 goto out;
1609         }
1610         crtc = obj_to_crtc(obj);
1611
1612         if (req->flags & DRM_MODE_CURSOR_BO) {
1613                 if (!crtc->funcs->cursor_set) {
1614                         DRM_ERROR("crtc does not support cursor\n");
1615                         ret = -ENXIO;
1616                         goto out;
1617                 }
1618                 /* Turns off the cursor if handle is 0 */
1619                 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1620                                               req->width, req->height);
1621         }
1622
1623         if (req->flags & DRM_MODE_CURSOR_MOVE) {
1624                 if (crtc->funcs->cursor_move) {
1625                         ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1626                 } else {
1627                         DRM_ERROR("crtc does not support cursor\n");
1628                         ret = -EFAULT;
1629                         goto out;
1630                 }
1631         }
1632 out:
1633         mutex_unlock(&dev->mode_config.mutex);
1634         return ret;
1635 }
1636
1637 /**
1638  * drm_mode_addfb - add an FB to the graphics configuration
1639  * @inode: inode from the ioctl
1640  * @filp: file * from the ioctl
1641  * @cmd: cmd from ioctl
1642  * @arg: arg from ioctl
1643  *
1644  * LOCKING:
1645  * Takes mode config lock.
1646  *
1647  * Add a new FB to the specified CRTC, given a user request.
1648  *
1649  * Called by the user via ioctl.
1650  *
1651  * RETURNS:
1652  * Zero on success, errno on failure.
1653  */
1654 int drm_mode_addfb(struct drm_device *dev,
1655                    void *data, struct drm_file *file_priv)
1656 {
1657         struct drm_mode_fb_cmd *r = data;
1658         struct drm_mode_config *config = &dev->mode_config;
1659         struct drm_framebuffer *fb;
1660         int ret = 0;
1661
1662         if ((config->min_width > r->width) || (r->width > config->max_width)) {
1663                 DRM_ERROR("mode new framebuffer width not within limits\n");
1664                 return -EINVAL;
1665         }
1666         if ((config->min_height > r->height) || (r->height > config->max_height)) {
1667                 DRM_ERROR("mode new framebuffer height not within limits\n");
1668                 return -EINVAL;
1669         }
1670
1671         mutex_lock(&dev->mode_config.mutex);
1672
1673         /* TODO check buffer is sufficently large */
1674         /* TODO setup destructor callback */
1675
1676         fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1677         if (!fb) {
1678                 DRM_ERROR("could not create framebuffer\n");
1679                 ret = -EINVAL;
1680                 goto out;
1681         }
1682
1683         r->fb_id = fb->base.id;
1684         list_add(&fb->filp_head, &file_priv->fbs);
1685
1686 out:
1687         mutex_unlock(&dev->mode_config.mutex);
1688         return ret;
1689 }
1690
1691 /**
1692  * drm_mode_rmfb - remove an FB from the configuration
1693  * @inode: inode from the ioctl
1694  * @filp: file * from the ioctl
1695  * @cmd: cmd from ioctl
1696  * @arg: arg from ioctl
1697  *
1698  * LOCKING:
1699  * Takes mode config lock.
1700  *
1701  * Remove the FB specified by the user.
1702  *
1703  * Called by the user via ioctl.
1704  *
1705  * RETURNS:
1706  * Zero on success, errno on failure.
1707  */
1708 int drm_mode_rmfb(struct drm_device *dev,
1709                    void *data, struct drm_file *file_priv)
1710 {
1711         struct drm_mode_object *obj;
1712         struct drm_framebuffer *fb = NULL;
1713         struct drm_framebuffer *fbl = NULL;
1714         uint32_t *id = data;
1715         int ret = 0;
1716         int found = 0;
1717
1718         mutex_lock(&dev->mode_config.mutex);
1719         obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1720         /* TODO check that we realy get a framebuffer back. */
1721         if (!obj) {
1722                 DRM_ERROR("mode invalid framebuffer id\n");
1723                 ret = -EINVAL;
1724                 goto out;
1725         }
1726         fb = obj_to_fb(obj);
1727
1728         list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1729                 if (fb == fbl)
1730                         found = 1;
1731
1732         if (!found) {
1733                 DRM_ERROR("tried to remove a fb that we didn't own\n");
1734                 ret = -EINVAL;
1735                 goto out;
1736         }
1737
1738         /* TODO release all crtc connected to the framebuffer */
1739         /* TODO unhock the destructor from the buffer object */
1740
1741         list_del(&fb->filp_head);
1742         fb->funcs->destroy(fb);
1743
1744 out:
1745         mutex_unlock(&dev->mode_config.mutex);
1746         return ret;
1747 }
1748
1749 /**
1750  * drm_mode_getfb - get FB info
1751  * @inode: inode from the ioctl
1752  * @filp: file * from the ioctl
1753  * @cmd: cmd from ioctl
1754  * @arg: arg from ioctl
1755  *
1756  * LOCKING:
1757  * Caller? (FIXME)
1758  *
1759  * Lookup the FB given its ID and return info about it.
1760  *
1761  * Called by the user via ioctl.
1762  *
1763  * RETURNS:
1764  * Zero on success, errno on failure.
1765  */
1766 int drm_mode_getfb(struct drm_device *dev,
1767                    void *data, struct drm_file *file_priv)
1768 {
1769         struct drm_mode_fb_cmd *r = data;
1770         struct drm_mode_object *obj;
1771         struct drm_framebuffer *fb;
1772         int ret = 0;
1773
1774         mutex_lock(&dev->mode_config.mutex);
1775         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1776         if (!obj) {
1777                 DRM_ERROR("invalid framebuffer id\n");
1778                 ret = -EINVAL;
1779                 goto out;
1780         }
1781         fb = obj_to_fb(obj);
1782
1783         r->height = fb->height;
1784         r->width = fb->width;
1785         r->depth = fb->depth;
1786         r->bpp = fb->bits_per_pixel;
1787         r->pitch = fb->pitch;
1788         fb->funcs->create_handle(fb, file_priv, &r->handle);
1789
1790 out:
1791         mutex_unlock(&dev->mode_config.mutex);
1792         return ret;
1793 }
1794
1795 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1796                            void *data, struct drm_file *file_priv)
1797 {
1798         struct drm_clip_rect __user *clips_ptr;
1799         struct drm_clip_rect *clips = NULL;
1800         struct drm_mode_fb_dirty_cmd *r = data;
1801         struct drm_mode_object *obj;
1802         struct drm_framebuffer *fb;
1803         unsigned flags;
1804         int num_clips;
1805         int ret = 0;
1806
1807         mutex_lock(&dev->mode_config.mutex);
1808         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1809         if (!obj) {
1810                 DRM_ERROR("invalid framebuffer id\n");
1811                 ret = -EINVAL;
1812                 goto out_err1;
1813         }
1814         fb = obj_to_fb(obj);
1815
1816         num_clips = r->num_clips;
1817         clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1818
1819         if (!num_clips != !clips_ptr) {
1820                 ret = -EINVAL;
1821                 goto out_err1;
1822         }
1823
1824         flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1825
1826         /* If userspace annotates copy, clips must come in pairs */
1827         if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1828                 ret = -EINVAL;
1829                 goto out_err1;
1830         }
1831
1832         if (num_clips && clips_ptr) {
1833                 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1834                 if (!clips) {
1835                         ret = -ENOMEM;
1836                         goto out_err1;
1837                 }
1838
1839                 ret = copy_from_user(clips, clips_ptr,
1840                                      num_clips * sizeof(*clips));
1841                 if (ret)
1842                         goto out_err2;
1843         }
1844
1845         if (fb->funcs->dirty) {
1846                 ret = fb->funcs->dirty(fb, flags, r->color, clips, num_clips);
1847         } else {
1848                 ret = -ENOSYS;
1849                 goto out_err2;
1850         }
1851
1852 out_err2:
1853         kfree(clips);
1854 out_err1:
1855         mutex_unlock(&dev->mode_config.mutex);
1856         return ret;
1857 }
1858
1859
1860 /**
1861  * drm_fb_release - remove and free the FBs on this file
1862  * @filp: file * from the ioctl
1863  *
1864  * LOCKING:
1865  * Takes mode config lock.
1866  *
1867  * Destroy all the FBs associated with @filp.
1868  *
1869  * Called by the user via ioctl.
1870  *
1871  * RETURNS:
1872  * Zero on success, errno on failure.
1873  */
1874 void drm_fb_release(struct drm_file *priv)
1875 {
1876         struct drm_device *dev = priv->minor->dev;
1877         struct drm_framebuffer *fb, *tfb;
1878
1879         mutex_lock(&dev->mode_config.mutex);
1880         list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1881                 list_del(&fb->filp_head);
1882                 fb->funcs->destroy(fb);
1883         }
1884         mutex_unlock(&dev->mode_config.mutex);
1885 }
1886
1887 /**
1888  * drm_mode_attachmode - add a mode to the user mode list
1889  * @dev: DRM device
1890  * @connector: connector to add the mode to
1891  * @mode: mode to add
1892  *
1893  * Add @mode to @connector's user mode list.
1894  */
1895 static int drm_mode_attachmode(struct drm_device *dev,
1896                                struct drm_connector *connector,
1897                                struct drm_display_mode *mode)
1898 {
1899         int ret = 0;
1900
1901         list_add_tail(&mode->head, &connector->user_modes);
1902         return ret;
1903 }
1904
1905 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1906                              struct drm_display_mode *mode)
1907 {
1908         struct drm_connector *connector;
1909         int ret = 0;
1910         struct drm_display_mode *dup_mode;
1911         int need_dup = 0;
1912         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1913                 if (!connector->encoder)
1914                         break;
1915                 if (connector->encoder->crtc == crtc) {
1916                         if (need_dup)
1917                                 dup_mode = drm_mode_duplicate(dev, mode);
1918                         else
1919                                 dup_mode = mode;
1920                         ret = drm_mode_attachmode(dev, connector, dup_mode);
1921                         if (ret)
1922                                 return ret;
1923                         need_dup = 1;
1924                 }
1925         }
1926         return 0;
1927 }
1928 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1929
1930 static int drm_mode_detachmode(struct drm_device *dev,
1931                                struct drm_connector *connector,
1932                                struct drm_display_mode *mode)
1933 {
1934         int found = 0;
1935         int ret = 0;
1936         struct drm_display_mode *match_mode, *t;
1937
1938         list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1939                 if (drm_mode_equal(match_mode, mode)) {
1940                         list_del(&match_mode->head);
1941                         drm_mode_destroy(dev, match_mode);
1942                         found = 1;
1943                         break;
1944                 }
1945         }
1946
1947         if (!found)
1948                 ret = -EINVAL;
1949
1950         return ret;
1951 }
1952
1953 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1954 {
1955         struct drm_connector *connector;
1956
1957         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1958                 drm_mode_detachmode(dev, connector, mode);
1959         }
1960         return 0;
1961 }
1962 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
1963
1964 /**
1965  * drm_fb_attachmode - Attach a user mode to an connector
1966  * @inode: inode from the ioctl
1967  * @filp: file * from the ioctl
1968  * @cmd: cmd from ioctl
1969  * @arg: arg from ioctl
1970  *
1971  * This attaches a user specified mode to an connector.
1972  * Called by the user via ioctl.
1973  *
1974  * RETURNS:
1975  * Zero on success, errno on failure.
1976  */
1977 int drm_mode_attachmode_ioctl(struct drm_device *dev,
1978                               void *data, struct drm_file *file_priv)
1979 {
1980         struct drm_mode_mode_cmd *mode_cmd = data;
1981         struct drm_connector *connector;
1982         struct drm_display_mode *mode;
1983         struct drm_mode_object *obj;
1984         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
1985         int ret = 0;
1986
1987         mutex_lock(&dev->mode_config.mutex);
1988
1989         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
1990         if (!obj) {
1991                 ret = -EINVAL;
1992                 goto out;
1993         }
1994         connector = obj_to_connector(obj);
1995
1996         mode = drm_mode_create(dev);
1997         if (!mode) {
1998                 ret = -ENOMEM;
1999                 goto out;
2000         }
2001
2002         drm_crtc_convert_umode(mode, umode);
2003
2004         ret = drm_mode_attachmode(dev, connector, mode);
2005 out:
2006         mutex_unlock(&dev->mode_config.mutex);
2007         return ret;
2008 }
2009
2010
2011 /**
2012  * drm_fb_detachmode - Detach a user specified mode from an connector
2013  * @inode: inode from the ioctl
2014  * @filp: file * from the ioctl
2015  * @cmd: cmd from ioctl
2016  * @arg: arg from ioctl
2017  *
2018  * Called by the user via ioctl.
2019  *
2020  * RETURNS:
2021  * Zero on success, errno on failure.
2022  */
2023 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2024                               void *data, struct drm_file *file_priv)
2025 {
2026         struct drm_mode_object *obj;
2027         struct drm_mode_mode_cmd *mode_cmd = data;
2028         struct drm_connector *connector;
2029         struct drm_display_mode mode;
2030         struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2031         int ret = 0;
2032
2033         mutex_lock(&dev->mode_config.mutex);
2034
2035         obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2036         if (!obj) {
2037                 ret = -EINVAL;
2038                 goto out;
2039         }
2040         connector = obj_to_connector(obj);
2041
2042         drm_crtc_convert_umode(&mode, umode);
2043         ret = drm_mode_detachmode(dev, connector, &mode);
2044 out:
2045         mutex_unlock(&dev->mode_config.mutex);
2046         return ret;
2047 }
2048
2049 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2050                                          const char *name, int num_values)
2051 {
2052         struct drm_property *property = NULL;
2053
2054         property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2055         if (!property)
2056                 return NULL;
2057
2058         if (num_values) {
2059                 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2060                 if (!property->values)
2061                         goto fail;
2062         }
2063
2064         drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2065         property->flags = flags;
2066         property->num_values = num_values;
2067         INIT_LIST_HEAD(&property->enum_blob_list);
2068
2069         if (name)
2070                 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2071
2072         list_add_tail(&property->head, &dev->mode_config.property_list);
2073         return property;
2074 fail:
2075         kfree(property);
2076         return NULL;
2077 }
2078 EXPORT_SYMBOL(drm_property_create);
2079
2080 int drm_property_add_enum(struct drm_property *property, int index,
2081                           uint64_t value, const char *name)
2082 {
2083         struct drm_property_enum *prop_enum;
2084
2085         if (!(property->flags & DRM_MODE_PROP_ENUM))
2086                 return -EINVAL;
2087
2088         if (!list_empty(&property->enum_blob_list)) {
2089                 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2090                         if (prop_enum->value == value) {
2091                                 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2092                                 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2093                                 return 0;
2094                         }
2095                 }
2096         }
2097
2098         prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2099         if (!prop_enum)
2100                 return -ENOMEM;
2101
2102         strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2103         prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2104         prop_enum->value = value;
2105
2106         property->values[index] = value;
2107         list_add_tail(&prop_enum->head, &property->enum_blob_list);
2108         return 0;
2109 }
2110 EXPORT_SYMBOL(drm_property_add_enum);
2111
2112 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2113 {
2114         struct drm_property_enum *prop_enum, *pt;
2115
2116         list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2117                 list_del(&prop_enum->head);
2118                 kfree(prop_enum);
2119         }
2120
2121         if (property->num_values)
2122                 kfree(property->values);
2123         drm_mode_object_put(dev, &property->base);
2124         list_del(&property->head);
2125         kfree(property);
2126 }
2127 EXPORT_SYMBOL(drm_property_destroy);
2128
2129 int drm_connector_attach_property(struct drm_connector *connector,
2130                                struct drm_property *property, uint64_t init_val)
2131 {
2132         int i;
2133
2134         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2135                 if (connector->property_ids[i] == 0) {
2136                         connector->property_ids[i] = property->base.id;
2137                         connector->property_values[i] = init_val;
2138                         break;
2139                 }
2140         }
2141
2142         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2143                 return -EINVAL;
2144         return 0;
2145 }
2146 EXPORT_SYMBOL(drm_connector_attach_property);
2147
2148 int drm_connector_property_set_value(struct drm_connector *connector,
2149                                   struct drm_property *property, uint64_t value)
2150 {
2151         int i;
2152
2153         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2154                 if (connector->property_ids[i] == property->base.id) {
2155                         connector->property_values[i] = value;
2156                         break;
2157                 }
2158         }
2159
2160         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2161                 return -EINVAL;
2162         return 0;
2163 }
2164 EXPORT_SYMBOL(drm_connector_property_set_value);
2165
2166 int drm_connector_property_get_value(struct drm_connector *connector,
2167                                   struct drm_property *property, uint64_t *val)
2168 {
2169         int i;
2170
2171         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2172                 if (connector->property_ids[i] == property->base.id) {
2173                         *val = connector->property_values[i];
2174                         break;
2175                 }
2176         }
2177
2178         if (i == DRM_CONNECTOR_MAX_PROPERTY)
2179                 return -EINVAL;
2180         return 0;
2181 }
2182 EXPORT_SYMBOL(drm_connector_property_get_value);
2183
2184 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2185                                void *data, struct drm_file *file_priv)
2186 {
2187         struct drm_mode_object *obj;
2188         struct drm_mode_get_property *out_resp = data;
2189         struct drm_property *property;
2190         int enum_count = 0;
2191         int blob_count = 0;
2192         int value_count = 0;
2193         int ret = 0, i;
2194         int copied;
2195         struct drm_property_enum *prop_enum;
2196         struct drm_mode_property_enum __user *enum_ptr;
2197         struct drm_property_blob *prop_blob;
2198         uint32_t *blob_id_ptr;
2199         uint64_t __user *values_ptr;
2200         uint32_t __user *blob_length_ptr;
2201
2202         mutex_lock(&dev->mode_config.mutex);
2203         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2204         if (!obj) {
2205                 ret = -EINVAL;
2206                 goto done;
2207         }
2208         property = obj_to_property(obj);
2209
2210         if (property->flags & DRM_MODE_PROP_ENUM) {
2211                 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2212                         enum_count++;
2213         } else if (property->flags & DRM_MODE_PROP_BLOB) {
2214                 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2215                         blob_count++;
2216         }
2217
2218         value_count = property->num_values;
2219
2220         strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2221         out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2222         out_resp->flags = property->flags;
2223
2224         if ((out_resp->count_values >= value_count) && value_count) {
2225                 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2226                 for (i = 0; i < value_count; i++) {
2227                         if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2228                                 ret = -EFAULT;
2229                                 goto done;
2230                         }
2231                 }
2232         }
2233         out_resp->count_values = value_count;
2234
2235         if (property->flags & DRM_MODE_PROP_ENUM) {
2236                 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2237                         copied = 0;
2238                         enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2239                         list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2240
2241                                 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2242                                         ret = -EFAULT;
2243                                         goto done;
2244                                 }
2245
2246                                 if (copy_to_user(&enum_ptr[copied].name,
2247                                                  &prop_enum->name, DRM_PROP_NAME_LEN)) {
2248                                         ret = -EFAULT;
2249                                         goto done;
2250                                 }
2251                                 copied++;
2252                         }
2253                 }
2254                 out_resp->count_enum_blobs = enum_count;
2255         }
2256
2257         if (property->flags & DRM_MODE_PROP_BLOB) {
2258                 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2259                         copied = 0;
2260                         blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2261                         blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2262
2263                         list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2264                                 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2265                                         ret = -EFAULT;
2266                                         goto done;
2267                                 }
2268
2269                                 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2270                                         ret = -EFAULT;
2271                                         goto done;
2272                                 }
2273
2274                                 copied++;
2275                         }
2276                 }
2277                 out_resp->count_enum_blobs = blob_count;
2278         }
2279 done:
2280         mutex_unlock(&dev->mode_config.mutex);
2281         return ret;
2282 }
2283
2284 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2285                                                           void *data)
2286 {
2287         struct drm_property_blob *blob;
2288
2289         if (!length || !data)
2290                 return NULL;
2291
2292         blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2293         if (!blob)
2294                 return NULL;
2295
2296         blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2297         blob->length = length;
2298
2299         memcpy(blob->data, data, length);
2300
2301         drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2302
2303         list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2304         return blob;
2305 }
2306
2307 static void drm_property_destroy_blob(struct drm_device *dev,
2308                                struct drm_property_blob *blob)
2309 {
2310         drm_mode_object_put(dev, &blob->base);
2311         list_del(&blob->head);
2312         kfree(blob);
2313 }
2314
2315 int drm_mode_getblob_ioctl(struct drm_device *dev,
2316                            void *data, struct drm_file *file_priv)
2317 {
2318         struct drm_mode_object *obj;
2319         struct drm_mode_get_blob *out_resp = data;
2320         struct drm_property_blob *blob;
2321         int ret = 0;
2322         void *blob_ptr;
2323
2324         mutex_lock(&dev->mode_config.mutex);
2325         obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2326         if (!obj) {
2327                 ret = -EINVAL;
2328                 goto done;
2329         }
2330         blob = obj_to_blob(obj);
2331
2332         if (out_resp->length == blob->length) {
2333                 blob_ptr = (void *)(unsigned long)out_resp->data;
2334                 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2335                         ret = -EFAULT;
2336                         goto done;
2337                 }
2338         }
2339         out_resp->length = blob->length;
2340
2341 done:
2342         mutex_unlock(&dev->mode_config.mutex);
2343         return ret;
2344 }
2345
2346 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2347                                             struct edid *edid)
2348 {
2349         struct drm_device *dev = connector->dev;
2350         int ret = 0;
2351
2352         if (connector->edid_blob_ptr)
2353                 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2354
2355         /* Delete edid, when there is none. */
2356         if (!edid) {
2357                 connector->edid_blob_ptr = NULL;
2358                 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2359                 return ret;
2360         }
2361
2362         connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
2363
2364         ret = drm_connector_property_set_value(connector,
2365                                                dev->mode_config.edid_property,
2366                                                connector->edid_blob_ptr->base.id);
2367
2368         return ret;
2369 }
2370 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2371
2372 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2373                                        void *data, struct drm_file *file_priv)
2374 {
2375         struct drm_mode_connector_set_property *out_resp = data;
2376         struct drm_mode_object *obj;
2377         struct drm_property *property;
2378         struct drm_connector *connector;
2379         int ret = -EINVAL;
2380         int i;
2381
2382         mutex_lock(&dev->mode_config.mutex);
2383
2384         obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2385         if (!obj) {
2386                 goto out;
2387         }
2388         connector = obj_to_connector(obj);
2389
2390         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2391                 if (connector->property_ids[i] == out_resp->prop_id)
2392                         break;
2393         }
2394
2395         if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2396                 goto out;
2397         }
2398
2399         obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2400         if (!obj) {
2401                 goto out;
2402         }
2403         property = obj_to_property(obj);
2404
2405         if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2406                 goto out;
2407
2408         if (property->flags & DRM_MODE_PROP_RANGE) {
2409                 if (out_resp->value < property->values[0])
2410                         goto out;
2411
2412                 if (out_resp->value > property->values[1])
2413                         goto out;
2414         } else {
2415                 int found = 0;
2416                 for (i = 0; i < property->num_values; i++) {
2417                         if (property->values[i] == out_resp->value) {
2418                                 found = 1;
2419                                 break;
2420                         }
2421                 }
2422                 if (!found) {
2423                         goto out;
2424                 }
2425         }
2426
2427         /* Do DPMS ourselves */
2428         if (property == connector->dev->mode_config.dpms_property) {
2429                 if (connector->funcs->dpms)
2430                         (*connector->funcs->dpms)(connector, (int) out_resp->value);
2431                 ret = 0;
2432         } else if (connector->funcs->set_property)
2433                 ret = connector->funcs->set_property(connector, property, out_resp->value);
2434
2435         /* store the property value if succesful */
2436         if (!ret)
2437                 drm_connector_property_set_value(connector, property, out_resp->value);
2438 out:
2439         mutex_unlock(&dev->mode_config.mutex);
2440         return ret;
2441 }
2442
2443 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2444                                       struct drm_encoder *encoder)
2445 {
2446         int i;
2447
2448         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2449                 if (connector->encoder_ids[i] == 0) {
2450                         connector->encoder_ids[i] = encoder->base.id;
2451                         return 0;
2452                 }
2453         }
2454         return -ENOMEM;
2455 }
2456 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2457
2458 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2459                                     struct drm_encoder *encoder)
2460 {
2461         int i;
2462         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2463                 if (connector->encoder_ids[i] == encoder->base.id) {
2464                         connector->encoder_ids[i] = 0;
2465                         if (connector->encoder == encoder)
2466                                 connector->encoder = NULL;
2467                         break;
2468                 }
2469         }
2470 }
2471 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2472
2473 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2474                                   int gamma_size)
2475 {
2476         crtc->gamma_size = gamma_size;
2477
2478         crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2479         if (!crtc->gamma_store) {
2480                 crtc->gamma_size = 0;
2481                 return false;
2482         }
2483
2484         return true;
2485 }
2486 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2487
2488 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2489                              void *data, struct drm_file *file_priv)
2490 {
2491         struct drm_mode_crtc_lut *crtc_lut = data;
2492         struct drm_mode_object *obj;
2493         struct drm_crtc *crtc;
2494         void *r_base, *g_base, *b_base;
2495         int size;
2496         int ret = 0;
2497
2498         mutex_lock(&dev->mode_config.mutex);
2499         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2500         if (!obj) {
2501                 ret = -EINVAL;
2502                 goto out;
2503         }
2504         crtc = obj_to_crtc(obj);
2505
2506         /* memcpy into gamma store */
2507         if (crtc_lut->gamma_size != crtc->gamma_size) {
2508                 ret = -EINVAL;
2509                 goto out;
2510         }
2511
2512         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2513         r_base = crtc->gamma_store;
2514         if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2515                 ret = -EFAULT;
2516                 goto out;
2517         }
2518
2519         g_base = r_base + size;
2520         if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2521                 ret = -EFAULT;
2522                 goto out;
2523         }
2524
2525         b_base = g_base + size;
2526         if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2527                 ret = -EFAULT;
2528                 goto out;
2529         }
2530
2531         crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
2532
2533 out:
2534         mutex_unlock(&dev->mode_config.mutex);
2535         return ret;
2536
2537 }
2538
2539 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2540                              void *data, struct drm_file *file_priv)
2541 {
2542         struct drm_mode_crtc_lut *crtc_lut = data;
2543         struct drm_mode_object *obj;
2544         struct drm_crtc *crtc;
2545         void *r_base, *g_base, *b_base;
2546         int size;
2547         int ret = 0;
2548
2549         mutex_lock(&dev->mode_config.mutex);
2550         obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2551         if (!obj) {
2552                 ret = -EINVAL;
2553                 goto out;
2554         }
2555         crtc = obj_to_crtc(obj);
2556
2557         /* memcpy into gamma store */
2558         if (crtc_lut->gamma_size != crtc->gamma_size) {
2559                 ret = -EINVAL;
2560                 goto out;
2561         }
2562
2563         size = crtc_lut->gamma_size * (sizeof(uint16_t));
2564         r_base = crtc->gamma_store;
2565         if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2566                 ret = -EFAULT;
2567                 goto out;
2568         }
2569
2570         g_base = r_base + size;
2571         if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2572                 ret = -EFAULT;
2573                 goto out;
2574         }
2575
2576         b_base = g_base + size;
2577         if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2578                 ret = -EFAULT;
2579                 goto out;
2580         }
2581 out:
2582         mutex_unlock(&dev->mode_config.mutex);
2583         return ret;
2584 }
2585
2586 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2587                              void *data, struct drm_file *file_priv)
2588 {
2589         struct drm_mode_crtc_page_flip *page_flip = data;
2590         struct drm_mode_object *obj;
2591         struct drm_crtc *crtc;
2592         struct drm_framebuffer *fb;
2593         struct drm_pending_vblank_event *e = NULL;
2594         unsigned long flags;
2595         int ret = -EINVAL;
2596
2597         if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2598             page_flip->reserved != 0)
2599                 return -EINVAL;
2600
2601         mutex_lock(&dev->mode_config.mutex);
2602         obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2603         if (!obj)
2604                 goto out;
2605         crtc = obj_to_crtc(obj);
2606
2607         if (crtc->funcs->page_flip == NULL)
2608                 goto out;
2609
2610         obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2611         if (!obj)
2612                 goto out;
2613         fb = obj_to_fb(obj);
2614
2615         if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2616                 ret = -ENOMEM;
2617                 spin_lock_irqsave(&dev->event_lock, flags);
2618                 if (file_priv->event_space < sizeof e->event) {
2619                         spin_unlock_irqrestore(&dev->event_lock, flags);
2620                         goto out;
2621                 }
2622                 file_priv->event_space -= sizeof e->event;
2623                 spin_unlock_irqrestore(&dev->event_lock, flags);
2624
2625                 e = kzalloc(sizeof *e, GFP_KERNEL);
2626                 if (e == NULL) {
2627                         spin_lock_irqsave(&dev->event_lock, flags);
2628                         file_priv->event_space += sizeof e->event;
2629                         spin_unlock_irqrestore(&dev->event_lock, flags);
2630                         goto out;
2631                 }
2632
2633                 e->event.base.type = DRM_EVENT_VBLANK;
2634                 e->event.base.length = sizeof e->event;
2635                 e->event.user_data = page_flip->user_data;
2636                 e->base.event = &e->event.base;
2637                 e->base.file_priv = file_priv;
2638                 e->base.destroy =
2639                         (void (*) (struct drm_pending_event *)) kfree;
2640         }
2641
2642         ret = crtc->funcs->page_flip(crtc, fb, e);
2643         if (ret) {
2644                 spin_lock_irqsave(&dev->event_lock, flags);
2645                 file_priv->event_space += sizeof e->event;
2646                 spin_unlock_irqrestore(&dev->event_lock, flags);
2647                 kfree(e);
2648         }
2649
2650 out:
2651         mutex_unlock(&dev->mode_config.mutex);
2652         return ret;
2653 }