xf86drmMode.c

   1 /*
   2  * \file xf86drmMode.c
   3  * Header for DRM modesetting interface.
   4  *
   5  * \author Jakob Bornecrantz <wallbraker@gmail.com>
   6  *
   7  * \par Acknowledgements:
   8  * Feb 2007, Dave Airlie <airlied@linux.ie>
   9  */
  10
  11 /*
  12  * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
  13  * Copyright (c) 2007-2008 Dave Airlie <airlied@linux.ie>
  14  * Copyright (c) 2007-2008 Jakob Bornecrantz <wallbraker@gmail.com>
  15  *
  16  * Permission is hereby granted, free of charge, to any person obtaining a
  17  * copy of this software and associated documentation files (the "Software"),
  18  * to deal in the Software without restriction, including without limitation
  19  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  20  * and/or sell copies of the Software, and to permit persons to whom the
  21  * Software is furnished to do so, subject to the following conditions:
  22  *
  23  * The above copyright notice and this permission notice shall be included in
  24  * all copies or substantial portions of the Software.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  27  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  28  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  29  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  30  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  31  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  32  * IN THE SOFTWARE.
  33  *
  34  */
  35
  36 /*
  37  * TODO the types we are after are defined in diffrent headers on diffrent
  38  * platforms find which headers to include to get uint32_t
  39  */
  40
  41 #ifdef HAVE_CONFIG_H
  42 #include "config.h"
  43 #endif
  44
  45 #include <limits.h>
  46 #include <stdint.h>
  47 #include <stdlib.h>
  48 #include <sys/ioctl.h>
  49 #ifdef HAVE_SYS_SYSCTL_H
  50 #include <sys/sysctl.h>
  51 #endif
  52 #include <stdio.h>
  53 #include <stdbool.h>
  54
  55 #include "xf86drmMode.h"
  56 #include "xf86drm.h"
  57 #include <drm.h>
  58 #include <string.h>
  59 #include <dirent.h>
  60 #include <unistd.h>
  61 #include <errno.h>
  62
  63 #define memclear(s) memset(&s, 0, sizeof(s))
  64
  65 #define U642VOID(x) ((void *)(unsigned long)(x))
  66 #define VOID2U64(x) ((uint64_t)(unsigned long)(x))
  67
  68 static inline int DRM_IOCTL(int fd, unsigned long cmd, void *arg)
  69 {
  70         int ret = drmIoctl(fd, cmd, arg);
  71         return ret < 0 ? -errno : ret;
  72 }
  73
  74 /*
  75  * Util functions
  76  */
  77
  78 static void* drmAllocCpy(char *array, int count, int entry_size)
  79 {
  80         char *r;
  81         int i;
  82
  83         if (!count || !array || !entry_size)
  84                 return 0;
  85
  86         if (!(r = drmMalloc(count*entry_size)))
  87                 return 0;
  88
  89         for (i = 0; i < count; i++)
  90                 memcpy(r+(entry_size*i), array+(entry_size*i), entry_size);
  91
  92         return r;
  93 }
  94
  95 /*
  96  * A couple of free functions.
  97  */
  98
  99 void drmModeFreeModeInfo(drmModeModeInfoPtr ptr)
 100 {
 101         if (!ptr)
 102                 return;
 103
 104         drmFree(ptr);
 105 }
 106
 107 void drmModeFreeResources(drmModeResPtr ptr)
 108 {
 109         if (!ptr)
 110                 return;
 111
 112         drmFree(ptr->fbs);
 113         drmFree(ptr->crtcs);
 114         drmFree(ptr->connectors);
 115         drmFree(ptr->encoders);
 116         drmFree(ptr);
 117 }
 118
 119 void drmModeFreeFB(drmModeFBPtr ptr)
 120 {
 121         if (!ptr)
 122                 return;
 123
 124         /* we might add more frees later. */
 125         drmFree(ptr);
 126 }
 127
 128 void drmModeFreeCrtc(drmModeCrtcPtr ptr)
 129 {
 130         if (!ptr)
 131                 return;
 132
 133         drmFree(ptr);
 134 }
 135
 136 void drmModeFreeConnector(drmModeConnectorPtr ptr)
 137 {
 138         if (!ptr)
 139                 return;
 140
 141         drmFree(ptr->encoders);
 142         drmFree(ptr->prop_values);
 143         drmFree(ptr->props);
 144         drmFree(ptr->modes);
 145         drmFree(ptr);
 146 }
 147
 148 void drmModeFreeEncoder(drmModeEncoderPtr ptr)
 149 {
 150         drmFree(ptr);
 151 }
 152
 153 /*
 154  * ModeSetting functions.
 155  */
 156
 157 drmModeResPtr drmModeGetResources(int fd)
 158 {
 159         struct drm_mode_card_res res, counts;
 160         drmModeResPtr r = 0;
 161
 162 retry:
 163         memclear(res);
 164         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
 165                 return 0;
 166
 167         counts = res;
 168
 169         if (res.count_fbs) {
 170                 res.fb_id_ptr = VOID2U64(drmMalloc(res.count_fbs*sizeof(uint32_t)));
 171                 if (!res.fb_id_ptr)
 172                         goto err_allocs;
 173         }
 174         if (res.count_crtcs) {
 175                 res.crtc_id_ptr = VOID2U64(drmMalloc(res.count_crtcs*sizeof(uint32_t)));
 176                 if (!res.crtc_id_ptr)
 177                         goto err_allocs;
 178         }
 179         if (res.count_connectors) {
 180                 res.connector_id_ptr = VOID2U64(drmMalloc(res.count_connectors*sizeof(uint32_t)));
 181                 if (!res.connector_id_ptr)
 182                         goto err_allocs;
 183         }
 184         if (res.count_encoders) {
 185                 res.encoder_id_ptr = VOID2U64(drmMalloc(res.count_encoders*sizeof(uint32_t)));
 186                 if (!res.encoder_id_ptr)
 187                         goto err_allocs;
 188         }
 189
 190         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
 191                 goto err_allocs;
 192
 193         /* The number of available connectors and etc may have changed with a
 194          * hotplug event in between the ioctls, in which case the field is
 195          * silently ignored by the kernel.
 196          */
 197         if (counts.count_fbs < res.count_fbs ||
 198             counts.count_crtcs < res.count_crtcs ||
 199             counts.count_connectors < res.count_connectors ||
 200             counts.count_encoders < res.count_encoders)
 201         {
 202                 drmFree(U642VOID(res.fb_id_ptr));
 203                 drmFree(U642VOID(res.crtc_id_ptr));
 204                 drmFree(U642VOID(res.connector_id_ptr));
 205                 drmFree(U642VOID(res.encoder_id_ptr));
 206
 207                 goto retry;
 208         }
 209
 210         /*
 211          * return
 212          */
 213         if (!(r = drmMalloc(sizeof(*r))))
 214                 goto err_allocs;
 215
 216         r->min_width     = res.min_width;
 217         r->max_width     = res.max_width;
 218         r->min_height    = res.min_height;
 219         r->max_height    = res.max_height;
 220         r->count_fbs     = res.count_fbs;
 221         r->count_crtcs   = res.count_crtcs;
 222         r->count_connectors = res.count_connectors;
 223         r->count_encoders = res.count_encoders;
 224
 225         r->fbs        = drmAllocCpy(U642VOID(res.fb_id_ptr), res.count_fbs, sizeof(uint32_t));
 226         r->crtcs      = drmAllocCpy(U642VOID(res.crtc_id_ptr), res.count_crtcs, sizeof(uint32_t));
 227         r->connectors = drmAllocCpy(U642VOID(res.connector_id_ptr), res.count_connectors, sizeof(uint32_t));
 228         r->encoders   = drmAllocCpy(U642VOID(res.encoder_id_ptr), res.count_encoders, sizeof(uint32_t));
 229         if ((res.count_fbs && !r->fbs) ||
 230             (res.count_crtcs && !r->crtcs) ||
 231             (res.count_connectors && !r->connectors) ||
 232             (res.count_encoders && !r->encoders))
 233         {
 234                 drmFree(r->fbs);
 235                 drmFree(r->crtcs);
 236                 drmFree(r->connectors);
 237                 drmFree(r->encoders);
 238                 drmFree(r);
 239                 r = 0;
 240         }
 241
 242 err_allocs:
 243         drmFree(U642VOID(res.fb_id_ptr));
 244         drmFree(U642VOID(res.crtc_id_ptr));
 245         drmFree(U642VOID(res.connector_id_ptr));
 246         drmFree(U642VOID(res.encoder_id_ptr));
 247
 248         return r;
 249 }
 250
 251 int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
 252                  uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
 253                  uint32_t *buf_id)
 254 {
 255         struct drm_mode_fb_cmd f;
 256         int ret;
 257
 258         memclear(f);
 259         f.width  = width;
 260         f.height = height;
 261         f.pitch  = pitch;
 262         f.bpp    = bpp;
 263         f.depth  = depth;
 264         f.handle = bo_handle;
 265
 266         if ((ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ADDFB, &f)))
 267                 return ret;
 268
 269         *buf_id = f.fb_id;
 270         return 0;
 271 }
 272
 273 int drmModeAddFB2(int fd, uint32_t width, uint32_t height,
 274                   uint32_t pixel_format, uint32_t bo_handles[4],
 275                   uint32_t pitches[4], uint32_t offsets[4],
 276                   uint32_t *buf_id, uint32_t flags)
 277 {
 278         struct drm_mode_fb_cmd2 f;
 279         int ret;
 280
 281         memclear(f);
 282         f.width  = width;
 283         f.height = height;
 284         f.pixel_format = pixel_format;
 285         f.flags = flags;
 286         memcpy(f.handles, bo_handles, 4 * sizeof(bo_handles[0]));
 287         memcpy(f.pitches, pitches, 4 * sizeof(pitches[0]));
 288         memcpy(f.offsets, offsets, 4 * sizeof(offsets[0]));
 289
 290         if ((ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ADDFB2, &f)))
 291                 return ret;
 292
 293         *buf_id = f.fb_id;
 294         return 0;
 295 }
 296
 297 int drmModeRmFB(int fd, uint32_t bufferId)
 298 {
 299         return DRM_IOCTL(fd, DRM_IOCTL_MODE_RMFB, &bufferId);
 300 }
 301
 302 drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
 303 {
 304         struct drm_mode_fb_cmd info;
 305         drmModeFBPtr r;
 306
 307         memclear(info);
 308         info.fb_id = buf;
 309
 310         if (drmIoctl(fd, DRM_IOCTL_MODE_GETFB, &info))
 311                 return NULL;
 312
 313         if (!(r = drmMalloc(sizeof(*r))))
 314                 return NULL;
 315
 316         r->fb_id = info.fb_id;
 317         r->width = info.width;
 318         r->height = info.height;
 319         r->pitch = info.pitch;
 320         r->bpp = info.bpp;
 321         r->handle = info.handle;
 322         r->depth = info.depth;
 323
 324         return r;
 325 }
 326
 327 int drmModeDirtyFB(int fd, uint32_t bufferId,
 328                    drmModeClipPtr clips, uint32_t num_clips)
 329 {
 330         struct drm_mode_fb_dirty_cmd dirty;
 331
 332         memclear(dirty);
 333         dirty.fb_id = bufferId;
 334         dirty.clips_ptr = VOID2U64(clips);
 335         dirty.num_clips = num_clips;
 336
 337         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DIRTYFB, &dirty);
 338 }
 339
 340 /*
 341  * Crtc functions
 342  */
 343
 344 drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
 345 {
 346         struct drm_mode_crtc crtc;
 347         drmModeCrtcPtr r;
 348
 349         memclear(crtc);
 350         crtc.crtc_id = crtcId;
 351
 352         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCRTC, &crtc))
 353                 return 0;
 354
 355         /*
 356          * return
 357          */
 358
 359         if (!(r = drmMalloc(sizeof(*r))))
 360                 return 0;
 361
 362         r->crtc_id         = crtc.crtc_id;
 363         r->x               = crtc.x;
 364         r->y               = crtc.y;
 365         r->mode_valid      = crtc.mode_valid;
 366         if (r->mode_valid) {
 367                 memcpy(&r->mode, &crtc.mode, sizeof(struct drm_mode_modeinfo));
 368                 r->width = crtc.mode.hdisplay;
 369                 r->height = crtc.mode.vdisplay;
 370         }
 371         r->buffer_id       = crtc.fb_id;
 372         r->gamma_size      = crtc.gamma_size;
 373         return r;
 374 }
 375
 376 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
 377                    uint32_t x, uint32_t y, uint32_t *connectors, int count,
 378                    drmModeModeInfoPtr mode)
 379 {
 380         struct drm_mode_crtc crtc;
 381
 382         memclear(crtc);
 383         crtc.x             = x;
 384         crtc.y             = y;
 385         crtc.crtc_id       = crtcId;
 386         crtc.fb_id         = bufferId;
 387         crtc.set_connectors_ptr = VOID2U64(connectors);
 388         crtc.count_connectors = count;
 389         if (mode) {
 390           memcpy(&crtc.mode, mode, sizeof(struct drm_mode_modeinfo));
 391           crtc.mode_valid = 1;
 392         }
 393
 394         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
 395 }
 396
 397 /*
 398  * Cursor manipulation
 399  */
 400
 401 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height)
 402 {
 403         struct drm_mode_cursor arg;
 404
 405         memclear(arg);
 406         arg.flags = DRM_MODE_CURSOR_BO;
 407         arg.crtc_id = crtcId;
 408         arg.width = width;
 409         arg.height = height;
 410         arg.handle = bo_handle;
 411
 412         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
 413 }
 414
 415 int drmModeSetCursor2(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height, int32_t hot_x, int32_t hot_y)
 416 {
 417         struct drm_mode_cursor2 arg;
 418
 419         memclear(arg);
 420         arg.flags = DRM_MODE_CURSOR_BO;
 421         arg.crtc_id = crtcId;
 422         arg.width = width;
 423         arg.height = height;
 424         arg.handle = bo_handle;
 425         arg.hot_x = hot_x;
 426         arg.hot_y = hot_y;
 427
 428         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR2, &arg);
 429 }
 430
 431 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y)
 432 {
 433         struct drm_mode_cursor arg;
 434
 435         memclear(arg);
 436         arg.flags = DRM_MODE_CURSOR_MOVE;
 437         arg.crtc_id = crtcId;
 438         arg.x = x;
 439         arg.y = y;
 440
 441         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
 442 }
 443
 444 /*
 445  * Encoder get
 446  */
 447 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id)
 448 {
 449         struct drm_mode_get_encoder enc;
 450         drmModeEncoderPtr r = NULL;
 451
 452         memclear(enc);
 453         enc.encoder_id = encoder_id;
 454
 455         if (drmIoctl(fd, DRM_IOCTL_MODE_GETENCODER, &enc))
 456                 return 0;
 457
 458         if (!(r = drmMalloc(sizeof(*r))))
 459                 return 0;
 460
 461         r->encoder_id = enc.encoder_id;
 462         r->crtc_id = enc.crtc_id;
 463         r->encoder_type = enc.encoder_type;
 464         r->possible_crtcs = enc.possible_crtcs;
 465         r->possible_clones = enc.possible_clones;
 466
 467         return r;
 468 }
 469
 470 /*
 471  * Connector manipulation
 472  */
 473 static drmModeConnectorPtr
 474 _drmModeGetConnector(int fd, uint32_t connector_id, int probe)
 475 {
 476         struct drm_mode_get_connector conn, counts;
 477         drmModeConnectorPtr r = NULL;
 478
 479         memclear(conn);
 480         conn.connector_id = connector_id;
 481         if (!probe) {
 482                 conn.count_modes = 1;
 483                 conn.modes_ptr = VOID2U64(drmMalloc(sizeof(struct drm_mode_modeinfo)));
 484         }
 485
 486         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
 487                 return 0;
 488
 489 retry:
 490         counts = conn;
 491
 492         if (conn.count_props) {
 493                 conn.props_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint32_t)));
 494                 if (!conn.props_ptr)
 495                         goto err_allocs;
 496                 conn.prop_values_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint64_t)));
 497                 if (!conn.prop_values_ptr)
 498                         goto err_allocs;
 499         }
 500
 501         if (conn.count_modes) {
 502                 conn.modes_ptr = VOID2U64(drmMalloc(conn.count_modes*sizeof(struct drm_mode_modeinfo)));
 503                 if (!conn.modes_ptr)
 504                         goto err_allocs;
 505         } else {
 506                 conn.count_modes = 1;
 507                 conn.modes_ptr = VOID2U64(drmMalloc(sizeof(struct drm_mode_modeinfo)));
 508         }
 509
 510         if (conn.count_encoders) {
 511                 conn.encoders_ptr = VOID2U64(drmMalloc(conn.count_encoders*sizeof(uint32_t)));
 512                 if (!conn.encoders_ptr)
 513                         goto err_allocs;
 514         }
 515
 516         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
 517                 goto err_allocs;
 518
 519         /* The number of available connectors and etc may have changed with a
 520          * hotplug event in between the ioctls, in which case the field is
 521          * silently ignored by the kernel.
 522          */
 523         if (counts.count_props < conn.count_props ||
 524             counts.count_modes < conn.count_modes ||
 525             counts.count_encoders < conn.count_encoders) {
 526                 drmFree(U642VOID(conn.props_ptr));
 527                 drmFree(U642VOID(conn.prop_values_ptr));
 528                 drmFree(U642VOID(conn.modes_ptr));
 529                 drmFree(U642VOID(conn.encoders_ptr));
 530
 531                 goto retry;
 532         }
 533
 534         if(!(r = drmMalloc(sizeof(*r)))) {
 535                 goto err_allocs;
 536         }
 537
 538         r->connector_id = conn.connector_id;
 539         r->encoder_id = conn.encoder_id;
 540         r->connection   = conn.connection;
 541         r->mmWidth      = conn.mm_width;
 542         r->mmHeight     = conn.mm_height;
 543         /* convert subpixel from kernel to userspace */
 544         r->subpixel     = conn.subpixel + 1;
 545         r->count_modes  = conn.count_modes;
 546         r->count_props  = conn.count_props;
 547         r->props        = drmAllocCpy(U642VOID(conn.props_ptr), conn.count_props, sizeof(uint32_t));
 548         r->prop_values  = drmAllocCpy(U642VOID(conn.prop_values_ptr), conn.count_props, sizeof(uint64_t));
 549         r->modes        = drmAllocCpy(U642VOID(conn.modes_ptr), conn.count_modes, sizeof(struct drm_mode_modeinfo));
 550         r->count_encoders = conn.count_encoders;
 551         r->encoders     = drmAllocCpy(U642VOID(conn.encoders_ptr), conn.count_encoders, sizeof(uint32_t));
 552         r->connector_type  = conn.connector_type;
 553         r->connector_type_id = conn.connector_type_id;
 554
 555         if ((r->count_props && !r->props) ||
 556             (r->count_props && !r->prop_values) ||
 557             (r->count_modes && !r->modes) ||
 558             (r->count_encoders && !r->encoders)) {
 559                 drmFree(r->props);
 560                 drmFree(r->prop_values);
 561                 drmFree(r->modes);
 562                 drmFree(r->encoders);
 563                 drmFree(r);
 564                 r = 0;
 565         }
 566
 567 err_allocs:
 568         drmFree(U642VOID(conn.prop_values_ptr));
 569         drmFree(U642VOID(conn.props_ptr));
 570         drmFree(U642VOID(conn.modes_ptr));
 571         drmFree(U642VOID(conn.encoders_ptr));
 572
 573         return r;
 574 }
 575
 576 drmModeConnectorPtr drmModeGetConnector(int fd, uint32_t connector_id)
 577 {
 578         return _drmModeGetConnector(fd, connector_id, 1);
 579 }
 580
 581 drmModeConnectorPtr drmModeGetConnectorCurrent(int fd, uint32_t connector_id)
 582 {
 583         return _drmModeGetConnector(fd, connector_id, 0);
 584 }
 585
 586 int drmModeAttachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
 587 {
 588         struct drm_mode_mode_cmd res;
 589
 590         memclear(res);
 591         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
 592         res.connector_id = connector_id;
 593
 594         return DRM_IOCTL(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
 595 }
 596
 597 int drmModeDetachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
 598 {
 599         struct drm_mode_mode_cmd res;
 600
 601         memclear(res);
 602         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
 603         res.connector_id = connector_id;
 604
 605         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
 606 }
 607
 608 drmModePropertyPtr drmModeGetProperty(int fd, uint32_t property_id)
 609 {
 610         struct drm_mode_get_property prop;
 611         drmModePropertyPtr r;
 612
 613         memclear(prop);
 614         prop.prop_id = property_id;
 615
 616         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop))
 617                 return 0;
 618
 619         if (prop.count_values)
 620                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_values * sizeof(uint64_t)));
 621
 622         if (prop.count_enum_blobs && (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
 623                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(struct drm_mode_property_enum)));
 624
 625         if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_BLOB)) {
 626                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
 627                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
 628         }
 629
 630         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop)) {
 631                 r = NULL;
 632                 goto err_allocs;
 633         }
 634
 635         if (!(r = drmMalloc(sizeof(*r))))
 636                 return NULL;
 637
 638         r->prop_id = prop.prop_id;
 639         r->count_values = prop.count_values;
 640
 641         r->flags = prop.flags;
 642         if (prop.count_values)
 643                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_values, sizeof(uint64_t));
 644         if (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
 645                 r->count_enums = prop.count_enum_blobs;
 646                 r->enums = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(struct drm_mode_property_enum));
 647         } else if (prop.flags & DRM_MODE_PROP_BLOB) {
 648                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_enum_blobs, sizeof(uint32_t));
 649                 r->blob_ids = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(uint32_t));
 650                 r->count_blobs = prop.count_enum_blobs;
 651         }
 652         strncpy(r->name, prop.name, DRM_PROP_NAME_LEN);
 653         r->name[DRM_PROP_NAME_LEN-1] = 0;
 654
 655 err_allocs:
 656         drmFree(U642VOID(prop.values_ptr));
 657         drmFree(U642VOID(prop.enum_blob_ptr));
 658
 659         return r;
 660 }
 661
 662 void drmModeFreeProperty(drmModePropertyPtr ptr)
 663 {
 664         if (!ptr)
 665                 return;
 666
 667         drmFree(ptr->values);
 668         drmFree(ptr->enums);
 669         drmFree(ptr);
 670 }
 671
 672 drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id)
 673 {
 674         struct drm_mode_get_blob blob;
 675         drmModePropertyBlobPtr r;
 676
 677         memclear(blob);
 678         blob.blob_id = blob_id;
 679
 680         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob))
 681                 return NULL;
 682
 683         if (blob.length)
 684                 blob.data = VOID2U64(drmMalloc(blob.length));
 685
 686         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob)) {
 687                 r = NULL;
 688                 goto err_allocs;
 689         }
 690
 691         if (!(r = drmMalloc(sizeof(*r))))
 692                 goto err_allocs;
 693
 694         r->id = blob.blob_id;
 695         r->length = blob.length;
 696         r->data = drmAllocCpy(U642VOID(blob.data), 1, blob.length);
 697
 698 err_allocs:
 699         drmFree(U642VOID(blob.data));
 700         return r;
 701 }
 702
 703 void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)
 704 {
 705         if (!ptr)
 706                 return;
 707
 708         drmFree(ptr->data);
 709         drmFree(ptr);
 710 }
 711
 712 int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
 713                              uint64_t value)
 714 {
 715         struct drm_mode_connector_set_property osp;
 716
 717         memclear(osp);
 718         osp.connector_id = connector_id;
 719         osp.prop_id = property_id;
 720         osp.value = value;
 721
 722         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPROPERTY, &osp);
 723 }
 724
 725 /*
 726  * checks if a modesetting capable driver has attached to the pci id
 727  * returns 0 if modesetting supported.
 728  *  -EINVAL or invalid bus id
 729  *  -ENOSYS if no modesetting support
 730 */
 731 int drmCheckModesettingSupported(const char *busid)
 732 {
 733 #if defined (__linux__)
 734         char pci_dev_dir[1024];
 735         int domain, bus, dev, func;
 736         DIR *sysdir;
 737         struct dirent *dent;
 738         int found = 0, ret;
 739
 740         ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev, &func);
 741         if (ret != 4)
 742                 return -EINVAL;
 743
 744         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/drm",
 745                 domain, bus, dev, func);
 746
 747         sysdir = opendir(pci_dev_dir);
 748         if (sysdir) {
 749                 dent = readdir(sysdir);
 750                 while (dent) {
 751                         if (!strncmp(dent->d_name, "controlD", 8)) {
 752                                 found = 1;
 753                                 break;
 754                         }
 755
 756                         dent = readdir(sysdir);
 757                 }
 758                 closedir(sysdir);
 759                 if (found)
 760                         return 0;
 761         }
 762
 763         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/",
 764                 domain, bus, dev, func);
 765
 766         sysdir = opendir(pci_dev_dir);
 767         if (!sysdir)
 768                 return -EINVAL;
 769
 770         dent = readdir(sysdir);
 771         while (dent) {
 772                 if (!strncmp(dent->d_name, "drm:controlD", 12)) {
 773                         found = 1;
 774                         break;
 775                 }
 776
 777                 dent = readdir(sysdir);
 778         }
 779
 780         closedir(sysdir);
 781         if (found)
 782                 return 0;
 783 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
 784         char kbusid[1024], sbusid[1024];
 785         char oid[128];
 786         int domain, bus, dev, func;
 787         int i, modesetting, ret;
 788         size_t len;
 789
 790         ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev,
 791             &func);
 792         if (ret != 4)
 793                 return -EINVAL;
 794         snprintf(kbusid, sizeof(kbusid), "pci:%04x:%02x:%02x.%d", domain, bus,
 795             dev, func);
 796
 797         /* How many GPUs do we expect in the machine ? */
 798         for (i = 0; i < 16; i++) {
 799                 snprintf(oid, sizeof(oid), "hw.dri.%d.busid", i);
 800                 len = sizeof(sbusid);
 801                 ret = sysctlbyname(oid, sbusid, &len, NULL, 0);
 802                 if (ret == -1) {
 803                         if (errno == ENOENT)
 804                                 continue;
 805                         return -EINVAL;
 806                 }
 807                 if (strcmp(sbusid, kbusid) != 0)
 808                         continue;
 809                 snprintf(oid, sizeof(oid), "hw.dri.%d.modesetting", i);
 810                 len = sizeof(modesetting);
 811                 ret = sysctlbyname(oid, &modesetting, &len, NULL, 0);
 812                 if (ret == -1 || len != sizeof(modesetting))
 813                         return -EINVAL;
 814                 return (modesetting ? 0 : -ENOSYS);
 815         }
 816 #elif defined(__DragonFly__)
 817         return 0;
 818 #endif
 819 #ifdef __OpenBSD__
 820         int     fd;
 821         struct drm_mode_card_res res;
 822         drmModeResPtr r = 0;
 823
 824         if ((fd = drmOpen(NULL, busid)) < 0)
 825                 return -EINVAL;
 826
 827         memset(&res, 0, sizeof(struct drm_mode_card_res));
 828
 829         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res)) {
 830                 drmClose(fd);
 831                 return -errno;
 832         }
 833
 834         drmClose(fd);
 835         return 0;
 836 #endif
 837         return -ENOSYS;
 838 }
 839
 840 int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
 841                         uint16_t *red, uint16_t *green, uint16_t *blue)
 842 {
 843         struct drm_mode_crtc_lut l;
 844
 845         memclear(l);
 846         l.crtc_id = crtc_id;
 847         l.gamma_size = size;
 848         l.red = VOID2U64(red);
 849         l.green = VOID2U64(green);
 850         l.blue = VOID2U64(blue);
 851
 852         return DRM_IOCTL(fd, DRM_IOCTL_MODE_GETGAMMA, &l);
 853 }
 854
 855 int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
 856                         uint16_t *red, uint16_t *green, uint16_t *blue)
 857 {
 858         struct drm_mode_crtc_lut l;
 859
 860         memclear(l);
 861         l.crtc_id = crtc_id;
 862         l.gamma_size = size;
 863         l.red = VOID2U64(red);
 864         l.green = VOID2U64(green);
 865         l.blue = VOID2U64(blue);
 866
 867         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETGAMMA, &l);
 868 }
 869
 870 int drmHandleEvent(int fd, drmEventContextPtr evctx)
 871 {
 872         char buffer[1024];
 873         int len, i;
 874         struct drm_event *e;
 875         struct drm_event_vblank *vblank;
 876
 877         /* The DRM read semantics guarantees that we always get only
 878          * complete events. */
 879
 880         len = read(fd, buffer, sizeof buffer);
 881         if (len == 0)
 882                 return 0;
 883         if (len < (int)sizeof *e)
 884                 return -1;
 885
 886         i = 0;
 887         while (i < len) {
 888                 e = (struct drm_event *) &buffer[i];
 889                 switch (e->type) {
 890                 case DRM_EVENT_VBLANK:
 891                         if (evctx->version < 1 ||
 892                             evctx->vblank_handler == NULL)
 893                                 break;
 894                         vblank = (struct drm_event_vblank *) e;
 895                         evctx->vblank_handler(fd,
 896                                               vblank->sequence,
 897                                               vblank->tv_sec,
 898                                               vblank->tv_usec,
 899                                               U642VOID (vblank->user_data));
 900                         break;
 901                 case DRM_EVENT_FLIP_COMPLETE:
 902                         if (evctx->version < 2 ||
 903                             evctx->page_flip_handler == NULL)
 904                                 break;
 905                         vblank = (struct drm_event_vblank *) e;
 906                         evctx->page_flip_handler(fd,
 907                                                  vblank->sequence,
 908                                                  vblank->tv_sec,
 909                                                  vblank->tv_usec,
 910                                                  U642VOID (vblank->user_data));
 911                         break;
 912                 default:
 913                         break;
 914                 }
 915                 i += e->length;
 916         }
 917
 918         return 0;
 919 }
 920
 921 int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
 922                     uint32_t flags, void *user_data)
 923 {
 924         struct drm_mode_crtc_page_flip flip;
 925
 926         memclear(flip);
 927         flip.fb_id = fb_id;
 928         flip.crtc_id = crtc_id;
 929         flip.user_data = VOID2U64(user_data);
 930         flip.flags = flags;
 931
 932         return DRM_IOCTL(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);
 933 }
 934
 935 int drmModeSetPlane(int fd, uint32_t plane_id, uint32_t crtc_id,
 936                     uint32_t fb_id, uint32_t flags,
 937                     int32_t crtc_x, int32_t crtc_y,
 938                     uint32_t crtc_w, uint32_t crtc_h,
 939                     uint32_t src_x, uint32_t src_y,
 940                     uint32_t src_w, uint32_t src_h)
 941 {
 942         struct drm_mode_set_plane s;
 943
 944         memclear(s);
 945         s.plane_id = plane_id;
 946         s.crtc_id = crtc_id;
 947         s.fb_id = fb_id;
 948         s.flags = flags;
 949         s.crtc_x = crtc_x;
 950         s.crtc_y = crtc_y;
 951         s.crtc_w = crtc_w;
 952         s.crtc_h = crtc_h;
 953         s.src_x = src_x;
 954         s.src_y = src_y;
 955         s.src_w = src_w;
 956         s.src_h = src_h;
 957
 958         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPLANE, &s);
 959 }
 960
 961 drmModePlanePtr drmModeGetPlane(int fd, uint32_t plane_id)
 962 {
 963         struct drm_mode_get_plane ovr, counts;
 964         drmModePlanePtr r = 0;
 965
 966 retry:
 967         memclear(ovr);
 968         ovr.plane_id = plane_id;
 969         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
 970                 return 0;
 971
 972         counts = ovr;
 973
 974         if (ovr.count_format_types) {
 975                 ovr.format_type_ptr = VOID2U64(drmMalloc(ovr.count_format_types *
 976                                                          sizeof(uint32_t)));
 977                 if (!ovr.format_type_ptr)
 978                         goto err_allocs;
 979         }
 980
 981         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
 982                 goto err_allocs;
 983
 984         if (counts.count_format_types < ovr.count_format_types) {
 985                 drmFree(U642VOID(ovr.format_type_ptr));
 986                 goto retry;
 987         }
 988
 989         if (!(r = drmMalloc(sizeof(*r))))
 990                 goto err_allocs;
 991
 992         r->count_formats = ovr.count_format_types;
 993         r->plane_id = ovr.plane_id;
 994         r->crtc_id = ovr.crtc_id;
 995         r->fb_id = ovr.fb_id;
 996         r->possible_crtcs = ovr.possible_crtcs;
 997         r->gamma_size = ovr.gamma_size;
 998         r->formats = drmAllocCpy(U642VOID(ovr.format_type_ptr),
 999                                  ovr.count_format_types, sizeof(uint32_t));
1000         if (ovr.count_format_types && !r->formats) {
1001                 drmFree(r->formats);
1002                 drmFree(r);
1003                 r = 0;
1004         }
1005
1006 err_allocs:
1007         drmFree(U642VOID(ovr.format_type_ptr));
1008
1009         return r;
1010 }
1011
1012 void drmModeFreePlane(drmModePlanePtr ptr)
1013 {
1014         if (!ptr)
1015                 return;
1016
1017         drmFree(ptr->formats);
1018         drmFree(ptr);
1019 }
1020
1021 drmModePlaneResPtr drmModeGetPlaneResources(int fd)
1022 {
1023         struct drm_mode_get_plane_res res, counts;
1024         drmModePlaneResPtr r = 0;
1025
1026 retry:
1027         memclear(res);
1028         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1029                 return 0;
1030
1031         counts = res;
1032
1033         if (res.count_planes) {
1034                 res.plane_id_ptr = VOID2U64(drmMalloc(res.count_planes *
1035                                                         sizeof(uint32_t)));
1036                 if (!res.plane_id_ptr)
1037                         goto err_allocs;
1038         }
1039
1040         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1041                 goto err_allocs;
1042
1043         if (counts.count_planes < res.count_planes) {
1044                 drmFree(U642VOID(res.plane_id_ptr));
1045                 goto retry;
1046         }
1047
1048         if (!(r = drmMalloc(sizeof(*r))))
1049                 goto err_allocs;
1050
1051         r->count_planes = res.count_planes;
1052         r->planes = drmAllocCpy(U642VOID(res.plane_id_ptr),
1053                                   res.count_planes, sizeof(uint32_t));
1054         if (res.count_planes && !r->planes) {
1055                 drmFree(r->planes);
1056                 drmFree(r);
1057                 r = 0;
1058         }
1059
1060 err_allocs:
1061         drmFree(U642VOID(res.plane_id_ptr));
1062
1063         return r;
1064 }
1065
1066 void drmModeFreePlaneResources(drmModePlaneResPtr ptr)
1067 {
1068         if (!ptr)
1069                 return;
1070
1071         drmFree(ptr->planes);
1072         drmFree(ptr);
1073 }
1074
1075 drmModeObjectPropertiesPtr drmModeObjectGetProperties(int fd,
1076                                                       uint32_t object_id,
1077                                                       uint32_t object_type)
1078 {
1079         struct drm_mode_obj_get_properties properties;
1080         drmModeObjectPropertiesPtr ret = NULL;
1081         uint32_t count;
1082
1083 retry:
1084         memclear(properties);
1085         properties.obj_id = object_id;
1086         properties.obj_type = object_type;
1087
1088         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1089                 return 0;
1090
1091         count = properties.count_props;
1092
1093         if (count) {
1094                 properties.props_ptr = VOID2U64(drmMalloc(count *
1095                                                           sizeof(uint32_t)));
1096                 if (!properties.props_ptr)
1097                         goto err_allocs;
1098                 properties.prop_values_ptr = VOID2U64(drmMalloc(count *
1099                                                       sizeof(uint64_t)));
1100                 if (!properties.prop_values_ptr)
1101                         goto err_allocs;
1102         }
1103
1104         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1105                 goto err_allocs;
1106
1107         if (count < properties.count_props) {
1108                 drmFree(U642VOID(properties.props_ptr));
1109                 drmFree(U642VOID(properties.prop_values_ptr));
1110                 goto retry;
1111         }
1112         count = properties.count_props;
1113
1114         ret = drmMalloc(sizeof(*ret));
1115         if (!ret)
1116                 goto err_allocs;
1117
1118         ret->count_props = count;
1119         ret->props = drmAllocCpy(U642VOID(properties.props_ptr),
1120                                  count, sizeof(uint32_t));
1121         ret->prop_values = drmAllocCpy(U642VOID(properties.prop_values_ptr),
1122                                        count, sizeof(uint64_t));
1123         if (ret->count_props && (!ret->props || !ret->prop_values)) {
1124                 drmFree(ret->props);
1125                 drmFree(ret->prop_values);
1126                 drmFree(ret);
1127                 ret = NULL;
1128         }
1129
1130 err_allocs:
1131         drmFree(U642VOID(properties.props_ptr));
1132         drmFree(U642VOID(properties.prop_values_ptr));
1133         return ret;
1134 }
1135
1136 void drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr)
1137 {
1138         if (!ptr)
1139                 return;
1140         drmFree(ptr->props);
1141         drmFree(ptr->prop_values);
1142         drmFree(ptr);
1143 }
1144
1145 int drmModeObjectSetProperty(int fd, uint32_t object_id, uint32_t object_type,
1146                              uint32_t property_id, uint64_t value)
1147 {
1148         struct drm_mode_obj_set_property prop;
1149
1150         memclear(prop);
1151         prop.value = value;
1152         prop.prop_id = property_id;
1153         prop.obj_id = object_id;
1154         prop.obj_type = object_type;
1155
1156         return DRM_IOCTL(fd, DRM_IOCTL_MODE_OBJ_SETPROPERTY, &prop);
1157 }
1158
1159 typedef struct _drmModeAtomicReqItem drmModeAtomicReqItem, *drmModeAtomicReqItemPtr;
1160
1161 struct _drmModeAtomicReqItem {
1162         uint32_t object_id;
1163         uint32_t property_id;
1164         uint64_t value;
1165 };
1166
1167 struct _drmModeAtomicReq {
1168         uint32_t cursor;
1169         uint32_t size_items;
1170         drmModeAtomicReqItemPtr items;
1171 };
1172
1173 drmModeAtomicReqPtr drmModeAtomicAlloc(void)
1174 {
1175         drmModeAtomicReqPtr req;
1176
1177         req = drmMalloc(sizeof *req);
1178         if (!req)
1179                 return NULL;
1180
1181         req->items = NULL;
1182         req->cursor = 0;
1183         req->size_items = 0;
1184
1185         return req;
1186 }
1187
1188 drmModeAtomicReqPtr drmModeAtomicDuplicate(drmModeAtomicReqPtr old)
1189 {
1190         drmModeAtomicReqPtr new;
1191
1192         new = drmMalloc(sizeof *new);
1193         if (!new)
1194                 return NULL;
1195
1196         new->cursor = old->cursor;
1197         new->size_items = old->size_items;
1198
1199         if (old->size_items) {
1200                 new->items = drmMalloc(old->size_items * sizeof(*new->items));
1201                 if (!new->items) {
1202                         free(new);
1203                         return NULL;
1204                 }
1205                 memcpy(new->items, old->items,
1206                        old->size_items * sizeof(*new->items));
1207         } else {
1208                 new->items = NULL;
1209         }
1210
1211         return new;
1212 }
1213
1214 int drmModeAtomicMerge(drmModeAtomicReqPtr base, drmModeAtomicReqPtr augment)
1215 {
1216         if (!augment || augment->cursor == 0)
1217                 return 0;
1218
1219         if (base->cursor + augment->cursor >= base->size_items) {
1220                 drmModeAtomicReqItemPtr new;
1221                 int saved_size = base->size_items;
1222
1223                 base->size_items = base->cursor + augment->cursor;
1224                 new = realloc(base->items,
1225                               base->size_items * sizeof(*base->items));
1226                 if (!new) {
1227                         base->size_items = saved_size;
1228                         return -ENOMEM;
1229                 }
1230                 base->items = new;
1231         }
1232
1233         memcpy(&base->items[base->cursor], augment->items,
1234                augment->cursor * sizeof(*augment->items));
1235         base->cursor += augment->cursor;
1236
1237         return 0;
1238 }
1239
1240 int drmModeAtomicGetCursor(drmModeAtomicReqPtr req)
1241 {
1242         return req->cursor;
1243 }
1244
1245 void drmModeAtomicSetCursor(drmModeAtomicReqPtr req, int cursor)
1246 {
1247         req->cursor = cursor;
1248 }
1249
1250 int drmModeAtomicAddProperty(drmModeAtomicReqPtr req,
1251                              uint32_t object_id,
1252                              uint32_t property_id,
1253                              uint64_t value)
1254 {
1255         if (req->cursor >= req->size_items) {
1256                 drmModeAtomicReqItemPtr new;
1257
1258                 req->size_items += 16;
1259                 new = realloc(req->items, req->size_items * sizeof(*req->items));
1260                 if (!new) {
1261                         req->size_items -= 16;
1262                         return -ENOMEM;
1263                 }
1264                 req->items = new;
1265         }
1266
1267         req->items[req->cursor].object_id = object_id;
1268         req->items[req->cursor].property_id = property_id;
1269         req->items[req->cursor].value = value;
1270         req->cursor++;
1271
1272         return req->cursor;
1273 }
1274
1275 void drmModeAtomicFree(drmModeAtomicReqPtr req)
1276 {
1277         if (!req)
1278                 return;
1279
1280         if (req->items)
1281                 drmFree(req->items);
1282         drmFree(req);
1283 }
1284
1285 static int sort_req_list(const void *misc, const void *other)
1286 {
1287         const drmModeAtomicReqItem *first = misc;
1288         const drmModeAtomicReqItem *second = other;
1289
1290         if (first->object_id < second->object_id)
1291                 return -1;
1292         else if (first->object_id > second->object_id)
1293                 return 1;
1294         else
1295                 return second->property_id - first->property_id;
1296 }
1297
1298 int drmModeAtomicCommit(int fd, drmModeAtomicReqPtr req, uint32_t flags,
1299                         void *user_data)
1300 {
1301         drmModeAtomicReqPtr sorted;
1302         struct drm_mode_atomic atomic;
1303         uint32_t *objs_ptr = NULL;
1304         uint32_t *count_props_ptr = NULL;
1305         uint32_t *props_ptr = NULL;
1306         uint64_t *prop_values_ptr = NULL;
1307         uint32_t last_obj_id = 0;
1308         uint32_t i;
1309         int obj_idx = -1;
1310         int ret = -1;
1311
1312         if (req->cursor == 0)
1313                 return 0;
1314
1315         sorted = drmModeAtomicDuplicate(req);
1316         if (sorted == NULL)
1317                 return -ENOMEM;
1318
1319         memclear(atomic);
1320
1321         /* Sort the list by object ID, then by property ID. */
1322         qsort(sorted->items, sorted->cursor, sizeof(*sorted->items),
1323               sort_req_list);
1324
1325         /* Now the list is sorted, eliminate duplicate property sets. */
1326         for (i = 0; i < sorted->cursor; i++) {
1327                 if (sorted->items[i].object_id != last_obj_id) {
1328                         atomic.count_objs++;
1329                         last_obj_id = sorted->items[i].object_id;
1330                 }
1331
1332                 if (i == sorted->cursor - 1)
1333                         continue;
1334
1335                 if (sorted->items[i].object_id != sorted->items[i + 1].object_id ||
1336                     sorted->items[i].property_id != sorted->items[i + 1].property_id)
1337                         continue;
1338
1339                 memmove(&sorted->items[i], &sorted->items[i + 1],
1340                         (sorted->cursor - i - 1) * sizeof(*sorted->items));
1341                 sorted->cursor--;
1342         }
1343
1344         objs_ptr = drmMalloc(atomic.count_objs * sizeof objs_ptr[0]);
1345         if (!objs_ptr) {
1346                 errno = ENOMEM;
1347                 goto out;
1348         }
1349
1350         count_props_ptr = drmMalloc(atomic.count_objs * sizeof count_props_ptr[0]);
1351         if (!count_props_ptr) {
1352                 errno = ENOMEM;
1353                 goto out;
1354         }
1355
1356         props_ptr = drmMalloc(sorted->cursor * sizeof props_ptr[0]);
1357         if (!props_ptr) {
1358                 errno = ENOMEM;
1359                 goto out;
1360         }
1361
1362         prop_values_ptr = drmMalloc(sorted->cursor * sizeof prop_values_ptr[0]);
1363         if (!prop_values_ptr) {
1364                 errno = ENOMEM;
1365                 goto out;
1366         }
1367
1368         for (i = 0, last_obj_id = 0; i < sorted->cursor; i++) {
1369                 if (sorted->items[i].object_id != last_obj_id) {
1370                         obj_idx++;
1371                         objs_ptr[obj_idx] = sorted->items[i].object_id;
1372                         last_obj_id = objs_ptr[obj_idx];
1373                 }
1374
1375                 count_props_ptr[obj_idx]++;
1376                 props_ptr[i] = sorted->items[i].property_id;
1377                 prop_values_ptr[i] = sorted->items[i].value;
1378
1379         }
1380
1381         atomic.flags = flags;
1382         atomic.objs_ptr = VOID2U64(objs_ptr);
1383         atomic.count_props_ptr = VOID2U64(count_props_ptr);
1384         atomic.props_ptr = VOID2U64(props_ptr);
1385         atomic.prop_values_ptr = VOID2U64(prop_values_ptr);
1386         atomic.user_data = VOID2U64(user_data);
1387
1388         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ATOMIC, &atomic);
1389
1390 out:
1391         drmFree(objs_ptr);
1392         drmFree(count_props_ptr);
1393         drmFree(props_ptr);
1394         drmFree(prop_values_ptr);
1395         drmModeAtomicFree(sorted);
1396
1397         return ret;
1398 }
1399
1400 int
1401 drmModeCreatePropertyBlob(int fd, const void *data, size_t length, uint32_t *id)
1402 {
1403         struct drm_mode_create_blob create;
1404         int ret;
1405
1406         if (length >= 0xffffffff)
1407                 return -ERANGE;
1408
1409         memclear(create);
1410
1411         create.length = length;
1412         create.data = (uintptr_t) data;
1413         create.blob_id = 0;
1414         *id = 0;
1415
1416         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATEPROPBLOB, &create);
1417         if (ret != 0)
1418                 return ret;
1419
1420         *id = create.blob_id;
1421         return 0;
1422 }
1423
1424 int
1425 drmModeDestroyPropertyBlob(int fd, uint32_t id)
1426 {
1427         struct drm_mode_destroy_blob destroy;
1428
1429         memclear(destroy);
1430         destroy.blob_id = id;
1431         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DESTROYPROPBLOB, &destroy);
1432 }