SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/gpu/drm/drm_crtc.c

   1 /*
   2  * Copyright (c) 2006-2008 Intel Corporation
   3  * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
   4  * Copyright (c) 2008 Red Hat Inc.
   5  *
   6  * DRM core CRTC related functions
   7  *
   8  * Permission to use, copy, modify, distribute, and sell this software and its
   9  * documentation for any purpose is hereby granted without fee, provided that
  10  * the above copyright notice appear in all copies and that both that copyright
  11  * notice and this permission notice appear in supporting documentation, and
  12  * that the name of the copyright holders not be used in advertising or
  13  * publicity pertaining to distribution of the software without specific,
  14  * written prior permission.  The copyright holders make no representations
  15  * about the suitability of this software for any purpose.  It is provided "as
  16  * is" without express or implied warranty.
  17  *
  18  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  19  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  20  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  21  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  22  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  23  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  *
  26  * Authors:
  27  *      Keith Packard
  28  *      Eric Anholt <eric@anholt.net>
  29  *      Dave Airlie <airlied@linux.ie>
  30  *      Jesse Barnes <jesse.barnes@intel.com>
  31  */
  32 #include <linux/list.h>
  33 #include <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         kfree(connector->fb_helper_private);
 499         mutex_lock(&dev->mode_config.mutex);
 500         drm_mode_object_put(dev, &connector->base);
 501         list_del(&connector->head);
 502         mutex_unlock(&dev->mode_config.mutex);
 503 }
 504 EXPORT_SYMBOL(drm_connector_cleanup);
 505
 506 void drm_encoder_init(struct drm_device *dev,
 507                       struct drm_encoder *encoder,
 508                       const struct drm_encoder_funcs *funcs,
 509                       int encoder_type)
 510 {
 511         mutex_lock(&dev->mode_config.mutex);
 512
 513         encoder->dev = dev;
 514
 515         drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
 516         encoder->encoder_type = encoder_type;
 517         encoder->funcs = funcs;
 518
 519         list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
 520         dev->mode_config.num_encoder++;
 521
 522         mutex_unlock(&dev->mode_config.mutex);
 523 }
 524 EXPORT_SYMBOL(drm_encoder_init);
 525
 526 void drm_encoder_cleanup(struct drm_encoder *encoder)
 527 {
 528         struct drm_device *dev = encoder->dev;
 529         mutex_lock(&dev->mode_config.mutex);
 530         drm_mode_object_put(dev, &encoder->base);
 531         list_del(&encoder->head);
 532         mutex_unlock(&dev->mode_config.mutex);
 533 }
 534 EXPORT_SYMBOL(drm_encoder_cleanup);
 535
 536 /**
 537  * drm_mode_create - create a new display mode
 538  * @dev: DRM device
 539  *
 540  * LOCKING:
 541  * Caller must hold DRM mode_config lock.
 542  *
 543  * Create a new drm_display_mode, give it an ID, and return it.
 544  *
 545  * RETURNS:
 546  * Pointer to new mode on success, NULL on error.
 547  */
 548 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
 549 {
 550         struct drm_display_mode *nmode;
 551
 552         nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
 553         if (!nmode)
 554                 return NULL;
 555
 556         drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
 557         return nmode;
 558 }
 559 EXPORT_SYMBOL(drm_mode_create);
 560
 561 /**
 562  * drm_mode_destroy - remove a mode
 563  * @dev: DRM device
 564  * @mode: mode to remove
 565  *
 566  * LOCKING:
 567  * Caller must hold mode config lock.
 568  *
 569  * Free @mode's unique identifier, then free it.
 570  */
 571 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
 572 {
 573         drm_mode_object_put(dev, &mode->base);
 574
 575         kfree(mode);
 576 }
 577 EXPORT_SYMBOL(drm_mode_destroy);
 578
 579 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 580 {
 581         struct drm_property *edid;
 582         struct drm_property *dpms;
 583         int i;
 584
 585         /*
 586          * Standard properties (apply to all connectors)
 587          */
 588         edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
 589                                    DRM_MODE_PROP_IMMUTABLE,
 590                                    "EDID", 0);
 591         dev->mode_config.edid_property = edid;
 592
 593         dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 594                                    "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
 595         for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
 596                 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
 597                                       drm_dpms_enum_list[i].name);
 598         dev->mode_config.dpms_property = dpms;
 599
 600         return 0;
 601 }
 602
 603 /**
 604  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
 605  * @dev: DRM device
 606  *
 607  * Called by a driver the first time a DVI-I connector is made.
 608  */
 609 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
 610 {
 611         struct drm_property *dvi_i_selector;
 612         struct drm_property *dvi_i_subconnector;
 613         int i;
 614
 615         if (dev->mode_config.dvi_i_select_subconnector_property)
 616                 return 0;
 617
 618         dvi_i_selector =
 619                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 620                                     "select subconnector",
 621                                     ARRAY_SIZE(drm_dvi_i_select_enum_list));
 622         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
 623                 drm_property_add_enum(dvi_i_selector, i,
 624                                       drm_dvi_i_select_enum_list[i].type,
 625                                       drm_dvi_i_select_enum_list[i].name);
 626         dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
 627
 628         dvi_i_subconnector =
 629                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 630                                     DRM_MODE_PROP_IMMUTABLE,
 631                                     "subconnector",
 632                                     ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
 633         for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
 634                 drm_property_add_enum(dvi_i_subconnector, i,
 635                                       drm_dvi_i_subconnector_enum_list[i].type,
 636                                       drm_dvi_i_subconnector_enum_list[i].name);
 637         dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
 638
 639         return 0;
 640 }
 641 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
 642
 643 /**
 644  * drm_create_tv_properties - create TV specific connector properties
 645  * @dev: DRM device
 646  * @num_modes: number of different TV formats (modes) supported
 647  * @modes: array of pointers to strings containing name of each format
 648  *
 649  * Called by a driver's TV initialization routine, this function creates
 650  * the TV specific connector properties for a given device.  Caller is
 651  * responsible for allocating a list of format names and passing them to
 652  * this routine.
 653  */
 654 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
 655                                   char *modes[])
 656 {
 657         struct drm_property *tv_selector;
 658         struct drm_property *tv_subconnector;
 659         int i;
 660
 661         if (dev->mode_config.tv_select_subconnector_property)
 662                 return 0;
 663
 664         /*
 665          * Basic connector properties
 666          */
 667         tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
 668                                           "select subconnector",
 669                                           ARRAY_SIZE(drm_tv_select_enum_list));
 670         for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
 671                 drm_property_add_enum(tv_selector, i,
 672                                       drm_tv_select_enum_list[i].type,
 673                                       drm_tv_select_enum_list[i].name);
 674         dev->mode_config.tv_select_subconnector_property = tv_selector;
 675
 676         tv_subconnector =
 677                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 678                                     DRM_MODE_PROP_IMMUTABLE, "subconnector",
 679                                     ARRAY_SIZE(drm_tv_subconnector_enum_list));
 680         for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
 681                 drm_property_add_enum(tv_subconnector, i,
 682                                       drm_tv_subconnector_enum_list[i].type,
 683                                       drm_tv_subconnector_enum_list[i].name);
 684         dev->mode_config.tv_subconnector_property = tv_subconnector;
 685
 686         /*
 687          * Other, TV specific properties: margins & TV modes.
 688          */
 689         dev->mode_config.tv_left_margin_property =
 690                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 691                                     "left margin", 2);
 692         dev->mode_config.tv_left_margin_property->values[0] = 0;
 693         dev->mode_config.tv_left_margin_property->values[1] = 100;
 694
 695         dev->mode_config.tv_right_margin_property =
 696                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 697                                     "right margin", 2);
 698         dev->mode_config.tv_right_margin_property->values[0] = 0;
 699         dev->mode_config.tv_right_margin_property->values[1] = 100;
 700
 701         dev->mode_config.tv_top_margin_property =
 702                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 703                                     "top margin", 2);
 704         dev->mode_config.tv_top_margin_property->values[0] = 0;
 705         dev->mode_config.tv_top_margin_property->values[1] = 100;
 706
 707         dev->mode_config.tv_bottom_margin_property =
 708                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 709                                     "bottom margin", 2);
 710         dev->mode_config.tv_bottom_margin_property->values[0] = 0;
 711         dev->mode_config.tv_bottom_margin_property->values[1] = 100;
 712
 713         dev->mode_config.tv_mode_property =
 714                 drm_property_create(dev, DRM_MODE_PROP_ENUM,
 715                                     "mode", num_modes);
 716         for (i = 0; i < num_modes; i++)
 717                 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
 718                                       i, modes[i]);
 719
 720         dev->mode_config.tv_brightness_property =
 721                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 722                                     "brightness", 2);
 723         dev->mode_config.tv_brightness_property->values[0] = 0;
 724         dev->mode_config.tv_brightness_property->values[1] = 100;
 725
 726         dev->mode_config.tv_contrast_property =
 727                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 728                                     "contrast", 2);
 729         dev->mode_config.tv_contrast_property->values[0] = 0;
 730         dev->mode_config.tv_contrast_property->values[1] = 100;
 731
 732         dev->mode_config.tv_flicker_reduction_property =
 733                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 734                                     "flicker reduction", 2);
 735         dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
 736         dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
 737
 738         dev->mode_config.tv_overscan_property =
 739                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 740                                     "overscan", 2);
 741         dev->mode_config.tv_overscan_property->values[0] = 0;
 742         dev->mode_config.tv_overscan_property->values[1] = 100;
 743
 744         dev->mode_config.tv_saturation_property =
 745                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 746                                     "saturation", 2);
 747         dev->mode_config.tv_saturation_property->values[0] = 0;
 748         dev->mode_config.tv_saturation_property->values[1] = 100;
 749
 750         dev->mode_config.tv_hue_property =
 751                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 752                                     "hue", 2);
 753         dev->mode_config.tv_hue_property->values[0] = 0;
 754         dev->mode_config.tv_hue_property->values[1] = 100;
 755
 756         return 0;
 757 }
 758 EXPORT_SYMBOL(drm_mode_create_tv_properties);
 759
 760 /**
 761  * drm_mode_create_scaling_mode_property - create scaling mode property
 762  * @dev: DRM device
 763  *
 764  * Called by a driver the first time it's needed, must be attached to desired
 765  * connectors.
 766  */
 767 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
 768 {
 769         struct drm_property *scaling_mode;
 770         int i;
 771
 772         if (dev->mode_config.scaling_mode_property)
 773                 return 0;
 774
 775         scaling_mode =
 776                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
 777                                     ARRAY_SIZE(drm_scaling_mode_enum_list));
 778         for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
 779                 drm_property_add_enum(scaling_mode, i,
 780                                       drm_scaling_mode_enum_list[i].type,
 781                                       drm_scaling_mode_enum_list[i].name);
 782
 783         dev->mode_config.scaling_mode_property = scaling_mode;
 784
 785         return 0;
 786 }
 787 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
 788
 789 /**
 790  * drm_mode_create_dithering_property - create dithering property
 791  * @dev: DRM device
 792  *
 793  * Called by a driver the first time it's needed, must be attached to desired
 794  * connectors.
 795  */
 796 int drm_mode_create_dithering_property(struct drm_device *dev)
 797 {
 798         struct drm_property *dithering_mode;
 799         int i;
 800
 801         if (dev->mode_config.dithering_mode_property)
 802                 return 0;
 803
 804         dithering_mode =
 805                 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
 806                                     ARRAY_SIZE(drm_dithering_mode_enum_list));
 807         for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
 808                 drm_property_add_enum(dithering_mode, i,
 809                                       drm_dithering_mode_enum_list[i].type,
 810                                       drm_dithering_mode_enum_list[i].name);
 811         dev->mode_config.dithering_mode_property = dithering_mode;
 812
 813         return 0;
 814 }
 815 EXPORT_SYMBOL(drm_mode_create_dithering_property);
 816
 817 /**
 818  * drm_mode_create_dirty_property - create dirty property
 819  * @dev: DRM device
 820  *
 821  * Called by a driver the first time it's needed, must be attached to desired
 822  * connectors.
 823  */
 824 int drm_mode_create_dirty_info_property(struct drm_device *dev)
 825 {
 826         struct drm_property *dirty_info;
 827         int i;
 828
 829         if (dev->mode_config.dirty_info_property)
 830                 return 0;
 831
 832         dirty_info =
 833                 drm_property_create(dev, DRM_MODE_PROP_ENUM |
 834                                     DRM_MODE_PROP_IMMUTABLE,
 835                                     "dirty",
 836                                     ARRAY_SIZE(drm_dirty_info_enum_list));
 837         for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
 838                 drm_property_add_enum(dirty_info, i,
 839                                       drm_dirty_info_enum_list[i].type,
 840                                       drm_dirty_info_enum_list[i].name);
 841         dev->mode_config.dirty_info_property = dirty_info;
 842
 843         return 0;
 844 }
 845 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
 846
 847 /**
 848  * drm_mode_config_init - initialize DRM mode_configuration structure
 849  * @dev: DRM device
 850  *
 851  * LOCKING:
 852  * None, should happen single threaded at init time.
 853  *
 854  * Initialize @dev's mode_config structure, used for tracking the graphics
 855  * configuration of @dev.
 856  */
 857 void drm_mode_config_init(struct drm_device *dev)
 858 {
 859         mutex_init(&dev->mode_config.mutex);
 860         mutex_init(&dev->mode_config.idr_mutex);
 861         INIT_LIST_HEAD(&dev->mode_config.fb_list);
 862         INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
 863         INIT_LIST_HEAD(&dev->mode_config.crtc_list);
 864         INIT_LIST_HEAD(&dev->mode_config.connector_list);
 865         INIT_LIST_HEAD(&dev->mode_config.encoder_list);
 866         INIT_LIST_HEAD(&dev->mode_config.property_list);
 867         INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
 868         idr_init(&dev->mode_config.crtc_idr);
 869
 870         mutex_lock(&dev->mode_config.mutex);
 871         drm_mode_create_standard_connector_properties(dev);
 872         mutex_unlock(&dev->mode_config.mutex);
 873
 874         /* Just to be sure */
 875         dev->mode_config.num_fb = 0;
 876         dev->mode_config.num_connector = 0;
 877         dev->mode_config.num_crtc = 0;
 878         dev->mode_config.num_encoder = 0;
 879 }
 880 EXPORT_SYMBOL(drm_mode_config_init);
 881
 882 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
 883 {
 884         uint32_t total_objects = 0;
 885
 886         total_objects += dev->mode_config.num_crtc;
 887         total_objects += dev->mode_config.num_connector;
 888         total_objects += dev->mode_config.num_encoder;
 889
 890         if (total_objects == 0)
 891                 return -EINVAL;
 892
 893         group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
 894         if (!group->id_list)
 895                 return -ENOMEM;
 896
 897         group->num_crtcs = 0;
 898         group->num_connectors = 0;
 899         group->num_encoders = 0;
 900         return 0;
 901 }
 902
 903 int drm_mode_group_init_legacy_group(struct drm_device *dev,
 904                                      struct drm_mode_group *group)
 905 {
 906         struct drm_crtc *crtc;
 907         struct drm_encoder *encoder;
 908         struct drm_connector *connector;
 909         int ret;
 910
 911         if ((ret = drm_mode_group_init(dev, group)))
 912                 return ret;
 913
 914         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 915                 group->id_list[group->num_crtcs++] = crtc->base.id;
 916
 917         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
 918                 group->id_list[group->num_crtcs + group->num_encoders++] =
 919                 encoder->base.id;
 920
 921         list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 922                 group->id_list[group->num_crtcs + group->num_encoders +
 923                                group->num_connectors++] = connector->base.id;
 924
 925         return 0;
 926 }
 927
 928 /**
 929  * drm_mode_config_cleanup - free up DRM mode_config info
 930  * @dev: DRM device
 931  *
 932  * LOCKING:
 933  * Caller must hold mode config lock.
 934  *
 935  * Free up all the connectors and CRTCs associated with this DRM device, then
 936  * free up the framebuffers and associated buffer objects.
 937  *
 938  * FIXME: cleanup any dangling user buffer objects too
 939  */
 940 void drm_mode_config_cleanup(struct drm_device *dev)
 941 {
 942         struct drm_connector *connector, *ot;
 943         struct drm_crtc *crtc, *ct;
 944         struct drm_encoder *encoder, *enct;
 945         struct drm_framebuffer *fb, *fbt;
 946         struct drm_property *property, *pt;
 947
 948         list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
 949                                  head) {
 950                 encoder->funcs->destroy(encoder);
 951         }
 952
 953         list_for_each_entry_safe(connector, ot,
 954                                  &dev->mode_config.connector_list, head) {
 955                 connector->funcs->destroy(connector);
 956         }
 957
 958         list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
 959                                  head) {
 960                 drm_property_destroy(dev, property);
 961         }
 962
 963         list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
 964                 fb->funcs->destroy(fb);
 965         }
 966
 967         list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
 968                 crtc->funcs->destroy(crtc);
 969         }
 970
 971 }
 972 EXPORT_SYMBOL(drm_mode_config_cleanup);
 973
 974 /**
 975  * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
 976  * @out: drm_mode_modeinfo struct to return to the user
 977  * @in: drm_display_mode to use
 978  *
 979  * LOCKING:
 980  * None.
 981  *
 982  * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
 983  * the user.
 984  */
 985 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
 986                                struct drm_display_mode *in)
 987 {
 988         out->clock = in->clock;
 989         out->hdisplay = in->hdisplay;
 990         out->hsync_start = in->hsync_start;
 991         out->hsync_end = in->hsync_end;
 992         out->htotal = in->htotal;
 993         out->hskew = in->hskew;
 994         out->vdisplay = in->vdisplay;
 995         out->vsync_start = in->vsync_start;
 996         out->vsync_end = in->vsync_end;
 997         out->vtotal = in->vtotal;
 998         out->vscan = in->vscan;
 999         out->vrefresh = in->vrefresh;
1000         out->flags = in->flags;
1001         out->type = in->type;
1002         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1003         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1004 }
1005
1006 /**
1007  * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1008  * @out: drm_display_mode to return to the user
1009  * @in: drm_mode_modeinfo to use
1010  *
1011  * LOCKING:
1012  * None.
1013  *
1014  * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1015  * the caller.
1016  */
1017 void drm_crtc_convert_umode(struct drm_display_mode *out,
1018                             struct drm_mode_modeinfo *in)
1019 {
1020         out->clock = in->clock;
1021         out->hdisplay = in->hdisplay;
1022         out->hsync_start = in->hsync_start;
1023         out->hsync_end = in->hsync_end;
1024         out->htotal = in->htotal;
1025         out->hskew = in->hskew;
1026         out->vdisplay = in->vdisplay;
1027         out->vsync_start = in->vsync_start;
1028         out->vsync_end = in->vsync_end;
1029         out->vtotal = in->vtotal;
1030         out->vscan = in->vscan;
1031         out->vrefresh = in->vrefresh;
1032         out->flags = in->flags;
1033         out->type = in->type;
1034         strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1035         out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1036 }
1037
1038 /**
1039  * drm_mode_getresources - get graphics configuration
1040  * @inode: inode from the ioctl
1041  * @filp: file * from the ioctl
1042  * @cmd: cmd from ioctl
1043  * @arg: arg from ioctl
1044  *
1045  * LOCKING:
1046  * Takes mode config lock.
1047  *
1048  * Construct a set of configuration description structures and return
1049  * them to the user, including CRTC, connector and framebuffer configuration.
1050  *
1051  * Called by the user via ioctl.
1052  *
1053  * RETURNS:
1054  * Zero on success, errno on failure.
1055  */
1056 int drm_mode_getresources(struct drm_device *dev, void *data,
1057                           struct drm_file *file_priv)
1058 {
1059         struct drm_mode_card_res *card_res = data;
1060         struct list_head *lh;
1061         struct drm_framebuffer *fb;
1062         struct drm_connector *connector;
1063         struct drm_crtc *crtc;
1064         struct drm_encoder *encoder;
1065         int ret = 0;
1066         int connector_count = 0;
1067         int crtc_count = 0;
1068         int fb_count = 0;
1069         int encoder_count = 0;
1070         int copied = 0, i;
1071         uint32_t __user *fb_id;
1072         uint32_t __user *crtc_id;
1073         uint32_t __user *connector_id;
1074         uint32_t __user *encoder_id;
1075         struct drm_mode_group *mode_group;
1076
1077         mutex_lock(&dev->mode_config.mutex);
1078
1079         /*
1080          * For the non-control nodes we need to limit the list of resources
1081          * by IDs in the group list for this node
1082          */
1083         list_for_each(lh, &file_priv->fbs)
1084                 fb_count++;
1085
1086         mode_group = &file_priv->master->minor->mode_group;
1087         if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1088
1089                 list_for_each(lh, &dev->mode_config.crtc_list)
1090                         crtc_count++;
1091
1092                 list_for_each(lh, &dev->mode_config.connector_list)
1093                         connector_count++;
1094
1095                 list_for_each(lh, &dev->mode_config.encoder_list)
1096                         encoder_count++;
1097         } else {
1098
1099                 crtc_count = mode_group->num_crtcs;
1100                 connector_count = mode_group->num_connectors;
1101                 encoder_count = mode_group->num_encoders;
1102         }
1103
1104         card_res->max_height = dev->mode_config.max_height;
1105         card_res->min_height = dev->mode_config.min_height;
1106         card_res->max_width = dev->mode_config.max_width;
1107         card_res->min_width = dev->mode_config.min_width;
1108
1109         /* handle this in 4 parts */
1110         /* FBs */
1111         if (card_res->count_fbs >= fb_count) {
1112                 copied = 0;
1113                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1114                 list_for_each_entry(fb, &file_priv->fbs, head) {
1115                         if (put_user(fb->base.id, fb_id + copied)) {
1116                                 ret = -EFAULT;
1117                                 goto out;
1118                         }
1119                         copied++;
1120                 }
1121         }
1122         card_res->count_fbs = fb_count;
1123
1124         /* CRTCs */
1125         if (card_res->count_crtcs >= crtc_count) {
1126                 copied = 0;
1127                 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1128                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1129                         list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1130                                             head) {
1131                                 DRM_DEBUG_KMS("CRTC ID is %d\n", crtc->base.id);
1132                                 if (put_user(crtc->base.id, crtc_id + copied)) {
1133                                         ret = -EFAULT;
1134                                         goto out;
1135                                 }
1136                                 copied++;
1137                         }
1138                 } else {
1139                         for (i = 0; i < mode_group->num_crtcs; i++) {
1140                                 if (put_user(mode_group->id_list[i],
1141                                              crtc_id + copied)) {
1142                                         ret = -EFAULT;
1143                                         goto out;
1144                                 }
1145                                 copied++;
1146                         }
1147                 }
1148         }
1149         card_res->count_crtcs = crtc_count;
1150
1151         /* Encoders */
1152         if (card_res->count_encoders >= encoder_count) {
1153                 copied = 0;
1154                 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1155                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1156                         list_for_each_entry(encoder,
1157                                             &dev->mode_config.encoder_list,
1158                                             head) {
1159                                 DRM_DEBUG_KMS("ENCODER ID is %d\n",
1160                                           encoder->base.id);
1161                                 if (put_user(encoder->base.id, encoder_id +
1162                                              copied)) {
1163                                         ret = -EFAULT;
1164                                         goto out;
1165                                 }
1166                                 copied++;
1167                         }
1168                 } else {
1169                         for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1170                                 if (put_user(mode_group->id_list[i],
1171                                              encoder_id + copied)) {
1172                                         ret = -EFAULT;
1173                                         goto out;
1174                                 }
1175                                 copied++;
1176                         }
1177
1178                 }
1179         }
1180         card_res->count_encoders = encoder_count;
1181
1182         /* Connectors */
1183         if (card_res->count_connectors >= connector_count) {
1184                 copied = 0;
1185                 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1186                 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1187                         list_for_each_entry(connector,
1188                                             &dev->mode_config.connector_list,
1189                                             head) {
1190                                 DRM_DEBUG_KMS("CONNECTOR ID is %d\n",
1191                                           connector->base.id);
1192                                 if (put_user(connector->base.id,
1193                                              connector_id + copied)) {
1194                                         ret = -EFAULT;
1195                                         goto out;
1196                                 }
1197                                 copied++;
1198                         }
1199                 } else {
1200                         int start = mode_group->num_crtcs +
1201                                 mode_group->num_encoders;
1202                         for (i = start; i < start + mode_group->num_connectors; i++) {
1203                                 if (put_user(mode_group->id_list[i],
1204                                              connector_id + copied)) {
1205                                         ret = -EFAULT;
1206                                         goto out;
1207                                 }
1208                                 copied++;
1209                         }
1210                 }
1211         }
1212         card_res->count_connectors = connector_count;
1213
1214         DRM_DEBUG_KMS("Counted %d %d %d\n", card_res->count_crtcs,
1215                   card_res->count_connectors, card_res->count_encoders);
1216
1217 out:
1218         mutex_unlock(&dev->mode_config.mutex);
1219         return ret;
1220 }
1221
1222 /**
1223  * drm_mode_getcrtc - get CRTC configuration
1224  * @inode: inode from the ioctl
1225  * @filp: file * from the ioctl
1226  * @cmd: cmd from ioctl
1227  * @arg: arg from ioctl
1228  *
1229  * LOCKING:
1230  * Caller? (FIXME)
1231  *
1232  * Construct a CRTC configuration structure to return to the user.
1233  *
1234  * Called by the user via ioctl.
1235  *
1236  * RETURNS:
1237  * Zero on success, errno on failure.
1238  */
1239 int drm_mode_getcrtc(struct drm_device *dev,
1240                      void *data, struct drm_file *file_priv)
1241 {
1242         struct drm_mode_crtc *crtc_resp = data;
1243         struct drm_crtc *crtc;
1244         struct drm_mode_object *obj;
1245         int ret = 0;
1246
1247         mutex_lock(&dev->mode_config.mutex);
1248
1249         obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1250                                    DRM_MODE_OBJECT_CRTC);
1251         if (!obj) {
1252                 ret = -EINVAL;
1253                 goto out;
1254         }
1255         crtc = obj_to_crtc(obj);
1256
1257         crtc_resp->x = crtc->x;
1258         crtc_resp->y = crtc->y;
1259         crtc_resp->gamma_size = crtc->gamma_size;
1260         if (crtc->fb)
1261                 crtc_resp->fb_id = crtc->fb->base.id;
1262         else
1263                 crtc_resp->fb_id = 0;
1264
1265         if (crtc->enabled) {
1266
1267                 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1268                 crtc_resp->mode_valid = 1;
1269
1270         } else {
1271                 crtc_resp->mode_valid = 0;
1272         }
1273
1274 out:
1275         mutex_unlock(&dev->mode_config.mutex);
1276         return ret;
1277 }
1278
1279 /**
1280  * drm_mode_getconnector - get connector configuration
1281  * @inode: inode from the ioctl
1282  * @filp: file * from the ioctl
1283  * @cmd: cmd from ioctl
1284  * @arg: arg from ioctl
1285  *
1286  * LOCKING:
1287  * Caller? (FIXME)
1288  *
1289  * Construct a connector configuration structure to return to the user.
1290  *
1291  * Called by the user via ioctl.
1292  *
1293  * RETURNS:
1294  * Zero on success, errno on failure.
1295  */
1296 int drm_mode_getconnector(struct drm_device *dev, void *data,
1297                           struct drm_file *file_priv)
1298 {
1299         struct drm_mode_get_connector *out_resp = data;
1300         struct drm_mode_object *obj;
1301         struct drm_connector *connector;
1302         struct drm_display_mode *mode;
1303         int mode_count = 0;
1304         int props_count = 0;
1305         int encoders_count = 0;
1306         int ret = 0;
1307         int copied = 0;
1308         int i;
1309         struct drm_mode_modeinfo u_mode;
1310         struct drm_mode_modeinfo __user *mode_ptr;
1311         uint32_t __user *prop_ptr;
1312         uint64_t __user *prop_values;
1313         uint32_t __user *encoder_ptr;
1314
1315         memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1316
1317         DRM_DEBUG_KMS("connector id %d:\n", out_resp->connector_id);
1318
1319         mutex_lock(&dev->mode_config.mutex);
1320
1321         obj = drm_mode_object_find(dev, out_resp->connector_id,
1322                                    DRM_MODE_OBJECT_CONNECTOR);
1323         if (!obj) {
1324                 ret = -EINVAL;
1325                 goto out;
1326         }
1327         connector = obj_to_connector(obj);
1328
1329         for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1330                 if (connector->property_ids[i] != 0) {
1331                         props_count++;
1332                 }
1333         }
1334
1335         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1336                 if (connector->encoder_ids[i] != 0) {
1337                         encoders_count++;
1338                 }
1339         }
1340
1341         if (out_resp->count_modes == 0) {
1342                 connector->funcs->fill_modes(connector,
1343                                              dev->mode_config.max_width,
1344                                              dev->mode_config.max_height);
1345         }
1346
1347         /* delayed so we get modes regardless of pre-fill_modes state */
1348         list_for_each_entry(mode, &connector->modes, head)
1349                 mode_count++;
1350
1351         out_resp->connector_id = connector->base.id;
1352         out_resp->connector_type = connector->connector_type;
1353         out_resp->connector_type_id = connector->connector_type_id;
1354         out_resp->mm_width = connector->display_info.width_mm;
1355         out_resp->mm_height = connector->display_info.height_mm;
1356         out_resp->subpixel = connector->display_info.subpixel_order;
1357         out_resp->connection = connector->status;
1358         if (connector->encoder)
1359                 out_resp->encoder_id = connector->encoder->base.id;
1360         else
1361                 out_resp->encoder_id = 0;
1362
1363         /*
1364          * This ioctl is called twice, once to determine how much space is
1365          * needed, and the 2nd time to fill it.
1366          */
1367         if ((out_resp->count_modes >= mode_count) && mode_count) {
1368                 copied = 0;
1369                 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1370                 list_for_each_entry(mode, &connector->modes, head) {
1371                         drm_crtc_convert_to_umode(&u_mode, mode);
1372                         if (copy_to_user(mode_ptr + copied,
1373                                          &u_mode, sizeof(u_mode))) {
1374                                 ret = -EFAULT;
1375                                 goto out;
1376                         }
1377                         copied++;
1378                 }
1379         }
1380         out_resp->count_modes = mode_count;
1381
1382         if ((out_resp->count_props >= props_count) && props_count) {
1383                 copied = 0;
1384                 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1385                 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1386                 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1387                         if (connector->property_ids[i] != 0) {
1388                                 if (put_user(connector->property_ids[i],
1389                                              prop_ptr + copied)) {
1390                                         ret = -EFAULT;
1391                                         goto out;
1392                                 }
1393
1394                                 if (put_user(connector->property_values[i],
1395                                              prop_values + copied)) {
1396                                         ret = -EFAULT;
1397                                         goto out;
1398                                 }
1399                                 copied++;
1400                         }
1401                 }
1402         }
1403         out_resp->count_props = props_count;
1404
1405         if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1406                 copied = 0;
1407                 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1408                 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1409                         if (connector->encoder_ids[i] != 0) {
1410                                 if (put_user(connector->encoder_ids[i],
1411                                              encoder_ptr + copied)) {
1412                                         ret = -EFAULT;
1413                                         goto out;
1414                                 }
1415                                 copied++;
1416                         }
1417                 }
1418         }
1419         out_resp->count_encoders = encoders_count;
1420
1421 out:
1422         mutex_unlock(&dev->mode_config.mutex);
1423         return ret;
1424 }
1425
1426 int drm_mode_getencoder(struct drm_device *dev, void *data,
1427                         struct drm_file *file_priv)
1428 {
1429         struct drm_mode_get_encoder *enc_resp = data;
1430         struct drm_mode_object *obj;
1431         struct drm_encoder *encoder;
1432         int ret = 0;
1433
1434         mutex_lock(&dev->mode_config.mutex);
1435         obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1436                                    DRM_MODE_OBJECT_ENCODER);
1437         if (!obj) {
1438                 ret = -EINVAL;
1439                 goto out;
1440         }
1441         encoder = obj_to_encoder(obj);
1442
1443         if (encoder->crtc)
1444                 enc_resp->crtc_id = encoder->crtc->base.id;
1445         else
1446                 enc_resp->crtc_id = 0;
1447         enc_resp->encoder_type = encoder->encoder_type;
1448         enc_resp->encoder_id = encoder->base.id;
1449         enc_resp->possible_crtcs = encoder->possible_crtcs;
1450         enc_resp->possible_clones = encoder->possible_clones;
1451
1452 out:
1453         mutex_unlock(&dev->mode_config.mutex);
1454         return ret;
1455 }
1456
1457 /**
1458  * drm_mode_setcrtc - set CRTC configuration
1459  * @inode: inode from the ioctl
1460  * @filp: file * from the ioctl
1461  * @cmd: cmd from ioctl
1462  * @arg: arg from ioctl
1463  *
1464  * LOCKING:
1465  * Caller? (FIXME)
1466  *
1467  * Build a new CRTC configuration based on user request.
1468  *
1469  * Called by the user via ioctl.
1470  *
1471  * RETURNS:
1472  * Zero on success, errno on failure.
1473  */
1474 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1475                      struct drm_file *file_priv)
1476 {
1477         struct drm_mode_config *config = &dev->mode_config;
1478         struct drm_mode_crtc *crtc_req = data;
1479         struct drm_mode_object *obj;
1480         struct drm_crtc *crtc, *crtcfb;
1481         struct drm_connector **connector_set = NULL, *connector;
1482         struct drm_framebuffer *fb = NULL;
1483         struct drm_display_mode *mode = NULL;
1484         struct drm_mode_set set;
1485         uint32_t __user *set_connectors_ptr;
1486         int ret = 0;
1487         int i;
1488
1489         mutex_lock(&dev->mode_config.mutex);
1490         obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1491                                    DRM_MODE_OBJECT_CRTC);
1492         if (!obj) {
1493                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1494                 ret = -EINVAL;
1495                 goto out;
1496         }
1497         crtc = obj_to_crtc(obj);
1498
1499         if (crtc_req->mode_valid) {
1500                 /* If we have a mode we need a framebuffer. */
1501                 /* If we pass -1, set the mode with the currently bound fb */
1502                 if (crtc_req->fb_id == -1) {
1503                         list_for_each_entry(crtcfb,
1504                                             &dev->mode_config.crtc_list, head) {
1505                                 if (crtcfb == crtc) {
1506                                         DRM_DEBUG_KMS("Using current fb for "
1507                                                         "setmode\n");
1508                                         fb = crtc->fb;
1509                                 }
1510                         }
1511                 } else {
1512                         obj = drm_mode_object_find(dev, crtc_req->fb_id,
1513                                                    DRM_MODE_OBJECT_FB);
1514                         if (!obj) {
1515                                 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1516                                                 crtc_req->fb_id);
1517                                 ret = -EINVAL;
1518                                 goto out;
1519                         }
1520                         fb = obj_to_fb(obj);
1521                 }
1522
1523                 mode = drm_mode_create(dev);
1524                 drm_crtc_convert_umode(mode, &crtc_req->mode);
1525                 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1526         }
1527
1528         if (crtc_req->count_connectors == 0 && mode) {
1529                 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1530                 ret = -EINVAL;
1531                 goto out;
1532         }
1533
1534         if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1535                 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1536                           crtc_req->count_connectors);
1537                 ret = -EINVAL;
1538                 goto out;
1539         }
1540
1541         if (crtc_req->count_connectors > 0) {
1542                 u32 out_id;
1543
1544                 /* Avoid unbounded kernel memory allocation */
1545                 if (crtc_req->count_connectors > config->num_connector) {
1546                         ret = -EINVAL;
1547                         goto out;
1548                 }
1549
1550                 connector_set = kmalloc(crtc_req->count_connectors *
1551                                         sizeof(struct drm_connector *),
1552                                         GFP_KERNEL);
1553                 if (!connector_set) {
1554                         ret = -ENOMEM;
1555                         goto out;
1556                 }
1557
1558                 for (i = 0; i < crtc_req->count_connectors; i++) {
1559                         set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1560                         if (get_user(out_id, &set_connectors_ptr[i])) {
1561                                 ret = -EFAULT;
1562                                 goto out;
1563                         }
1564
1565                         obj = drm_mode_object_find(dev, out_id,
1566                                                    DRM_MODE_OBJECT_CONNECTOR);
1567                         if (!obj) {
1568                                 DRM_DEBUG_KMS("Connector id %d unknown\n",
1569                                                 out_id);
1570                                 ret = -EINVAL;
1571                                 goto out;
1572                         }
1573                         connector = obj_to_connector(obj);
1574
1575                         connector_set[i] = connector;
1576                 }
1577         }
1578
1579         set.crtc = crtc;
1580         set.x = crtc_req->x;
1581         set.y = crtc_req->y;
1582         set.mode = mode;
1583         set.connectors = connector_set;
1584         set.num_connectors = crtc_req->count_connectors;
1585         set.fb = fb;
1586         ret = crtc->funcs->set_config(&set);
1587
1588 out:
1589         kfree(connector_set);
1590         mutex_unlock(&dev->mode_config.mutex);
1591         return ret;
1592 }
1593
1594 int drm_mode_cursor_ioctl(struct drm_device *dev,
1595                         void *data, struct drm_file *file_priv)
1596 {
1597         struct drm_mode_cursor *req = data;
1598         struct drm_mode_object *obj;
1599         struct drm_crtc *crtc;
1600         int ret = 0;
1601
1602         if (!req->flags) {
1603                 DRM_ERROR("no operation set\n");
1604                 return -EINVAL;
1605         }
1606
1607         mutex_lock(&dev->mode_config.mutex);
1608         obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1609         if (!obj) {
1610                 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1611                 ret = -EINVAL;
1612                 goto out;
1613         }
1614         crtc = obj_to_crtc(obj);
1615
1616         if (req->flags & DRM_MODE_CURSOR_BO) {
1617                 if (!crtc->funcs->cursor_set) {
1618                         DRM_ERROR("crtc does not support cursor\n");
1619                         ret = -ENXIO;
1620                         goto out;
1621                 }
1622                 /* Turns off the cursor if handle is 0 */
1623                 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1624                                               req->width, req->height);
1625         }
1626
1627         if (req->flags & DRM_MODE_CURSOR_MOVE) {
1628                 if (crtc->funcs->cursor_move) {
1629                         ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1630                 } else {
1631                         DRM_ERROR("crtc does not support cursor\n");
1632                         ret = -EFAULT;
1633                         goto out;
1634                 }
1635         }
1636 out:
1637         mutex_unlock(&dev->mode_config.mutex);
1638         return ret;
1639 }
1640
1641 /**
1642  * drm_mode_addfb - add an FB to the graphics configuration
1643  * @inode: inode from the ioctl
1644  * @filp: file * from the ioctl
1645  * @cmd: cmd from ioctl
1646  * @arg: arg from ioctl
1647  *
1648  * LOCKING:
1649  * Takes mode config lock.
1650  *
1651  * Add a new FB to the specified CRTC, given a user request.
1652  *
1653  * Called by the user via ioctl.
1654  *
1655  * RETURNS:
1656  * Zero on success, errno on failure.
1657  */
1658 int drm_mode_addfb(struct drm_device *dev,
1659                    void *data, struct drm_file *file_priv)
1660 {
1661         struct drm_mode_fb_cmd *r = data;
1662         struct drm_mode_config *config = &dev->mode_config;
1663         struct drm_framebuffer *fb;
1664         int ret = 0;
1665
1666         if ((config->min_width > r->width) || (r->width > config->max_width)) {
1667                 DRM_ERROR("mode new framebuffer width not within limits\n");
1668                 return -EINVAL;
1669         }
1670         if ((config->min_height > r->height) || (r->height > config->max_height)) {
1671                 DRM_ERROR("mode new framebuffer height not within limits\n");
1672                 return -EINVAL;
1673         }
1674
1675         mutex_lock(&dev->mode_config.mutex);
1676
1677         /* TODO check buffer is sufficently large */
1678         /* TODO setup destructor callback */
1679
1680         fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1681         if (!fb) {
1682                 DRM_ERROR("could not create framebuffer\n");
1683                 ret = -EINVAL;
1684                 goto out;
1685         }
1686
1687         r->fb_id = fb->base.id;
1688         list_add(&fb->filp_head, &file_priv->fbs);
1689
1690 out:
1691         mutex_unlock(&dev->mode_config.mutex);
1692         return ret;
1693 }
1694
1695 /**
1696  * drm_mode_rmfb - remove an FB from the configuration
1697  * @inode: inode from the ioctl
1698  * @filp: file * from the ioctl
1699  * @cmd: cmd from ioctl
1700  * @arg: arg from ioctl
1701  *
1702  * LOCKING:
1703  * Takes mode config lock.
1704  *
1705  * Remove the FB specified by the user.
1706  *
1707  * Called by the user via ioctl.
1708  *
1709  * RETURNS:
1710  * Zero on success, errno on failure.
1711  */
1712 int drm_mode_rmfb(struct drm_device *dev,
1713                    void *data, struct drm_file *file_priv)
1714 {
1715         struct drm_mode_object *obj;
1716         struct drm_framebuffer *fb = NULL;
1717         struct drm_framebuffer *fbl = NULL;
1718         uint32_t *id = data;
1719         int ret = 0;
1720         int found = 0;
1721
1722         mutex_lock(&dev->mode_config.mutex);
1723         obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1724         /* TODO check that we realy get a framebuffer back. */
1725         if (!obj) {
1726                 DRM_ERROR("mode invalid framebuffer id\n");
1727                 ret = -EINVAL;
1728                 goto out;
1729         }
1730         fb = obj_to_fb(obj);
1731
1732         list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1733                 if (fb == fbl)
1734                         found = 1;
1735
1736         if (!found) {
1737                 DRM_ERROR("tried to remove a fb that we didn't own\n");
1738                 ret = -EINVAL;
1739                 goto out;
1740         }
1741
1742         /* TODO release all crtc connected to the framebuffer */
1743         /* TODO unhock the destructor from the buffer object */
1744
1745         list_del(&fb->filp_head);
1746         fb->funcs->destroy(fb);
1747
1748 out:
1749         mutex_unlock(&dev->mode_config.mutex);
1750         return ret;
1751 }
1752
1753 /**
1754  * drm_mode_getfb - get FB info
1755  * @inode: inode from the ioctl
1756  * @filp: file * from the ioctl
1757  * @cmd: cmd from ioctl
1758  * @arg: arg from ioctl
1759  *
1760  * LOCKING:
1761  * Caller? (FIXME)
1762  *
1763  * Lookup the FB given its ID and return info about it.
1764  *
1765  * Called by the user via ioctl.
1766  *
1767  * RETURNS:
1768  * Zero on success, errno on failure.
1769  */
1770 int drm_mode_getfb(struct drm_device *dev,
1771                    void *data, struct drm_file *file_priv)
1772 {
1773         struct drm_mode_fb_cmd *r = data;
1774         struct drm_mode_object *obj;
1775         struct drm_framebuffer *fb;
1776         int ret = 0;
1777
1778         mutex_lock(&dev->mode_config.mutex);
1779         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1780         if (!obj) {
1781                 DRM_ERROR("invalid framebuffer id\n");
1782                 ret = -EINVAL;
1783                 goto out;
1784         }
1785         fb = obj_to_fb(obj);
1786
1787         r->height = fb->height;
1788         r->width = fb->width;
1789         r->depth = fb->depth;
1790         r->bpp = fb->bits_per_pixel;
1791         r->pitch = fb->pitch;
1792         fb->funcs->create_handle(fb, file_priv, &r->handle);
1793
1794 out:
1795         mutex_unlock(&dev->mode_config.mutex);
1796         return ret;
1797 }
1798
1799 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1800                            void *data, struct drm_file *file_priv)
1801 {
1802         struct drm_clip_rect __user *clips_ptr;
1803         struct drm_clip_rect *clips = NULL;
1804         struct drm_mode_fb_dirty_cmd *r = data;
1805         struct drm_mode_object *obj;
1806         struct drm_framebuffer *fb;
1807         unsigned flags;
1808         int num_clips;
1809         int ret = 0;
1810
1811         mutex_lock(&dev->mode_config.mutex);
1812         obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1813         if (!obj) {
1814                 DRM_ERROR("invalid framebuffer id\n");
1815                 ret = -EINVAL;
1816                 goto out_err1;
1817         }
1818         fb = obj_to_fb(obj);
1819
1820         num_clips = r->num_clips;
1821         clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1822
1823         if (!num_clips != !clips_ptr) {
1824                 ret = -EINVAL;
1825                 goto out_err1;
1826         }
1827
1828         flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1829
1830         /* If userspace annotates copy, clips must come in pairs */
1831         if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1832                 ret = -EINVAL;
1833                 goto out_err1;
1834         }
1835
1836         if (num_clips && clips_ptr) {
1837                 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1838                 if (!clips) {
1839                         ret = -ENOMEM;
1840                         goto out_err1;
1841                 }
1842
1843                 ret = copy_from_user(clips, clips_ptr,
1844                                      num_clips * sizeof(*clips));
1845                 if (ret)
1846                         goto out_err2;
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 }