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