drivers/gpu/drm/drm_crtc.c

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