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 different headers on different
  38  * platforms find which headers to include to get uint32_t
  39  */
  40
  41 #include <limits.h>
  42 #include <stdint.h>
  43 #include <stdlib.h>
  44 #include <sys/ioctl.h>
  45 #if HAVE_SYS_SYSCTL_H
  46 #include <sys/sysctl.h>
  47 #endif
  48 #include <stdio.h>
  49 #include <stdbool.h>
  50
  51 #include "libdrm_macros.h"
  52 #include "xf86drmMode.h"
  53 #include "xf86drm.h"
  54 #include <drm.h>
  55 #include <string.h>
  56 #include <dirent.h>
  57 #include <unistd.h>
  58 #include <errno.h>
  59
  60 #define memclear(s) memset(&s, 0, sizeof(s))
  61
  62 #define U642VOID(x) ((void *)(unsigned long)(x))
  63 #define VOID2U64(x) ((uint64_t)(unsigned long)(x))
  64
  65 static inline int DRM_IOCTL(int fd, unsigned long cmd, void *arg)
  66 {
  67         int ret = drmIoctl(fd, cmd, arg);
  68         return ret < 0 ? -errno : ret;
  69 }
  70
  71 /*
  72  * Util functions
  73  */
  74
  75 static void* drmAllocCpy(char *array, int count, int entry_size)
  76 {
  77         char *r;
  78         int i;
  79
  80         if (!count || !array || !entry_size)
  81                 return 0;
  82
  83         if (!(r = drmMalloc(count*entry_size)))
  84                 return 0;
  85
  86         for (i = 0; i < count; i++)
  87                 memcpy(r+(entry_size*i), array+(entry_size*i), entry_size);
  88
  89         return r;
  90 }
  91
  92 /*
  93  * A couple of free functions.
  94  */
  95
  96 drm_public void drmModeFreeModeInfo(drmModeModeInfoPtr ptr)
  97 {
  98         if (!ptr)
  99                 return;
 100
 101         drmFree(ptr);
 102 }
 103
 104 drm_public void drmModeFreeResources(drmModeResPtr ptr)
 105 {
 106         if (!ptr)
 107                 return;
 108
 109         drmFree(ptr->fbs);
 110         drmFree(ptr->crtcs);
 111         drmFree(ptr->connectors);
 112         drmFree(ptr->encoders);
 113         drmFree(ptr);
 114 }
 115
 116 drm_public void drmModeFreeFB(drmModeFBPtr ptr)
 117 {
 118         if (!ptr)
 119                 return;
 120
 121         /* we might add more frees later. */
 122         drmFree(ptr);
 123 }
 124
 125 drm_public void drmModeFreeCrtc(drmModeCrtcPtr ptr)
 126 {
 127         if (!ptr)
 128                 return;
 129
 130         drmFree(ptr);
 131 }
 132
 133 drm_public void drmModeFreeConnector(drmModeConnectorPtr ptr)
 134 {
 135         if (!ptr)
 136                 return;
 137
 138         drmFree(ptr->encoders);
 139         drmFree(ptr->prop_values);
 140         drmFree(ptr->props);
 141         drmFree(ptr->modes);
 142         drmFree(ptr);
 143 }
 144
 145 drm_public void drmModeFreeEncoder(drmModeEncoderPtr ptr)
 146 {
 147         drmFree(ptr);
 148 }
 149
 150 /*
 151  * ModeSetting functions.
 152  */
 153
 154 drm_public drmModeResPtr drmModeGetResources(int fd)
 155 {
 156         struct drm_mode_card_res res, counts;
 157         drmModeResPtr r = 0;
 158
 159 retry:
 160         memclear(res);
 161         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
 162                 return 0;
 163
 164         counts = res;
 165
 166         if (res.count_fbs) {
 167                 res.fb_id_ptr = VOID2U64(drmMalloc(res.count_fbs*sizeof(uint32_t)));
 168                 if (!res.fb_id_ptr)
 169                         goto err_allocs;
 170         }
 171         if (res.count_crtcs) {
 172                 res.crtc_id_ptr = VOID2U64(drmMalloc(res.count_crtcs*sizeof(uint32_t)));
 173                 if (!res.crtc_id_ptr)
 174                         goto err_allocs;
 175         }
 176         if (res.count_connectors) {
 177                 res.connector_id_ptr = VOID2U64(drmMalloc(res.count_connectors*sizeof(uint32_t)));
 178                 if (!res.connector_id_ptr)
 179                         goto err_allocs;
 180         }
 181         if (res.count_encoders) {
 182                 res.encoder_id_ptr = VOID2U64(drmMalloc(res.count_encoders*sizeof(uint32_t)));
 183                 if (!res.encoder_id_ptr)
 184                         goto err_allocs;
 185         }
 186
 187         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
 188                 goto err_allocs;
 189
 190         /* The number of available connectors and etc may have changed with a
 191          * hotplug event in between the ioctls, in which case the field is
 192          * silently ignored by the kernel.
 193          */
 194         if (counts.count_fbs < res.count_fbs ||
 195             counts.count_crtcs < res.count_crtcs ||
 196             counts.count_connectors < res.count_connectors ||
 197             counts.count_encoders < res.count_encoders)
 198         {
 199                 drmFree(U642VOID(res.fb_id_ptr));
 200                 drmFree(U642VOID(res.crtc_id_ptr));
 201                 drmFree(U642VOID(res.connector_id_ptr));
 202                 drmFree(U642VOID(res.encoder_id_ptr));
 203
 204                 goto retry;
 205         }
 206
 207         /*
 208          * return
 209          */
 210         if (!(r = drmMalloc(sizeof(*r))))
 211                 goto err_allocs;
 212
 213         r->min_width     = res.min_width;
 214         r->max_width     = res.max_width;
 215         r->min_height    = res.min_height;
 216         r->max_height    = res.max_height;
 217         r->count_fbs     = res.count_fbs;
 218         r->count_crtcs   = res.count_crtcs;
 219         r->count_connectors = res.count_connectors;
 220         r->count_encoders = res.count_encoders;
 221
 222         r->fbs        = drmAllocCpy(U642VOID(res.fb_id_ptr), res.count_fbs, sizeof(uint32_t));
 223         r->crtcs      = drmAllocCpy(U642VOID(res.crtc_id_ptr), res.count_crtcs, sizeof(uint32_t));
 224         r->connectors = drmAllocCpy(U642VOID(res.connector_id_ptr), res.count_connectors, sizeof(uint32_t));
 225         r->encoders   = drmAllocCpy(U642VOID(res.encoder_id_ptr), res.count_encoders, sizeof(uint32_t));
 226         if ((res.count_fbs && !r->fbs) ||
 227             (res.count_crtcs && !r->crtcs) ||
 228             (res.count_connectors && !r->connectors) ||
 229             (res.count_encoders && !r->encoders))
 230         {
 231                 drmFree(r->fbs);
 232                 drmFree(r->crtcs);
 233                 drmFree(r->connectors);
 234                 drmFree(r->encoders);
 235                 drmFree(r);
 236                 r = 0;
 237         }
 238
 239 err_allocs:
 240         drmFree(U642VOID(res.fb_id_ptr));
 241         drmFree(U642VOID(res.crtc_id_ptr));
 242         drmFree(U642VOID(res.connector_id_ptr));
 243         drmFree(U642VOID(res.encoder_id_ptr));
 244
 245         return r;
 246 }
 247
 248
 249 drm_public int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
 250                             uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
 251                             uint32_t *buf_id)
 252 {
 253         struct drm_mode_fb_cmd f;
 254         int ret;
 255
 256         memclear(f);
 257         f.width  = width;
 258         f.height = height;
 259         f.pitch  = pitch;
 260         f.bpp    = bpp;
 261         f.depth  = depth;
 262         f.handle = bo_handle;
 263
 264         if ((ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ADDFB, &f)))
 265                 return ret;
 266
 267         *buf_id = f.fb_id;
 268         return 0;
 269 }
 270
 271 drm_public int drmModeAddFB2WithModifiers(int fd, uint32_t width,
 272                 uint32_t height, uint32_t pixel_format, const uint32_t bo_handles[4],
 273                 const uint32_t pitches[4], const uint32_t offsets[4],
 274                 const uint64_t modifier[4], uint32_t *buf_id, uint32_t flags)
 275 {
 276         struct drm_mode_fb_cmd2 f;
 277         int ret;
 278
 279         memclear(f);
 280         f.width  = width;
 281         f.height = height;
 282         f.pixel_format = pixel_format;
 283         f.flags = flags;
 284         memcpy(f.handles, bo_handles, 4 * sizeof(bo_handles[0]));
 285         memcpy(f.pitches, pitches, 4 * sizeof(pitches[0]));
 286         memcpy(f.offsets, offsets, 4 * sizeof(offsets[0]));
 287         if (modifier)
 288                 memcpy(f.modifier, modifier, 4 * sizeof(modifier[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 drm_public int drmModeAddFB2(int fd, uint32_t width, uint32_t height,
 298                 uint32_t pixel_format, const uint32_t bo_handles[4],
 299                 const uint32_t pitches[4], const uint32_t offsets[4],
 300                 uint32_t *buf_id, uint32_t flags)
 301 {
 302         return drmModeAddFB2WithModifiers(fd, width, height,
 303                                           pixel_format, bo_handles,
 304                                           pitches, offsets, NULL,
 305                                           buf_id, flags);
 306 }
 307
 308 drm_public int drmModeRmFB(int fd, uint32_t bufferId)
 309 {
 310         return DRM_IOCTL(fd, DRM_IOCTL_MODE_RMFB, &bufferId);
 311 }
 312
 313 drm_public drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
 314 {
 315         struct drm_mode_fb_cmd info;
 316         drmModeFBPtr r;
 317
 318         memclear(info);
 319         info.fb_id = buf;
 320
 321         if (drmIoctl(fd, DRM_IOCTL_MODE_GETFB, &info))
 322                 return NULL;
 323
 324         if (!(r = drmMalloc(sizeof(*r))))
 325                 return NULL;
 326
 327         r->fb_id = info.fb_id;
 328         r->width = info.width;
 329         r->height = info.height;
 330         r->pitch = info.pitch;
 331         r->bpp = info.bpp;
 332         r->handle = info.handle;
 333         r->depth = info.depth;
 334
 335         return r;
 336 }
 337
 338 drm_public int drmModeDirtyFB(int fd, uint32_t bufferId,
 339                    drmModeClipPtr clips, uint32_t num_clips)
 340 {
 341         struct drm_mode_fb_dirty_cmd dirty;
 342
 343         memclear(dirty);
 344         dirty.fb_id = bufferId;
 345         dirty.clips_ptr = VOID2U64(clips);
 346         dirty.num_clips = num_clips;
 347
 348         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DIRTYFB, &dirty);
 349 }
 350
 351 /*
 352  * Crtc functions
 353  */
 354
 355 drm_public drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
 356 {
 357         struct drm_mode_crtc crtc;
 358         drmModeCrtcPtr r;
 359
 360         memclear(crtc);
 361         crtc.crtc_id = crtcId;
 362
 363         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCRTC, &crtc))
 364                 return 0;
 365
 366         /*
 367          * return
 368          */
 369
 370         if (!(r = drmMalloc(sizeof(*r))))
 371                 return 0;
 372
 373         r->crtc_id         = crtc.crtc_id;
 374         r->x               = crtc.x;
 375         r->y               = crtc.y;
 376         r->mode_valid      = crtc.mode_valid;
 377         if (r->mode_valid) {
 378                 memcpy(&r->mode, &crtc.mode, sizeof(struct drm_mode_modeinfo));
 379                 r->width = crtc.mode.hdisplay;
 380                 r->height = crtc.mode.vdisplay;
 381         }
 382         r->buffer_id       = crtc.fb_id;
 383         r->gamma_size      = crtc.gamma_size;
 384         return r;
 385 }
 386
 387 drm_public int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
 388                    uint32_t x, uint32_t y, uint32_t *connectors, int count,
 389                    drmModeModeInfoPtr mode)
 390 {
 391         struct drm_mode_crtc crtc;
 392
 393         memclear(crtc);
 394         crtc.x             = x;
 395         crtc.y             = y;
 396         crtc.crtc_id       = crtcId;
 397         crtc.fb_id         = bufferId;
 398         crtc.set_connectors_ptr = VOID2U64(connectors);
 399         crtc.count_connectors = count;
 400         if (mode) {
 401           memcpy(&crtc.mode, mode, sizeof(struct drm_mode_modeinfo));
 402           crtc.mode_valid = 1;
 403         }
 404
 405         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
 406 }
 407
 408 /*
 409  * Cursor manipulation
 410  */
 411
 412 drm_public int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle,
 413                                                                 uint32_t width, uint32_t height)
 414 {
 415         struct drm_mode_cursor arg;
 416
 417         memclear(arg);
 418         arg.flags = DRM_MODE_CURSOR_BO;
 419         arg.crtc_id = crtcId;
 420         arg.width = width;
 421         arg.height = height;
 422         arg.handle = bo_handle;
 423
 424         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
 425 }
 426
 427 drm_public int drmModeSetCursor2(int fd, uint32_t crtcId, uint32_t bo_handle,
 428                                                                  uint32_t width, uint32_t height, int32_t hot_x,
 429                                                                  int32_t hot_y)
 430 {
 431         struct drm_mode_cursor2 arg;
 432
 433         memclear(arg);
 434         arg.flags = DRM_MODE_CURSOR_BO;
 435         arg.crtc_id = crtcId;
 436         arg.width = width;
 437         arg.height = height;
 438         arg.handle = bo_handle;
 439         arg.hot_x = hot_x;
 440         arg.hot_y = hot_y;
 441
 442         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR2, &arg);
 443 }
 444
 445 drm_public int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y)
 446 {
 447         struct drm_mode_cursor arg;
 448
 449         memclear(arg);
 450         arg.flags = DRM_MODE_CURSOR_MOVE;
 451         arg.crtc_id = crtcId;
 452         arg.x = x;
 453         arg.y = y;
 454
 455         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
 456 }
 457
 458 /*
 459  * Encoder get
 460  */
 461 drm_public drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id)
 462 {
 463         struct drm_mode_get_encoder enc;
 464         drmModeEncoderPtr r = NULL;
 465
 466         memclear(enc);
 467         enc.encoder_id = encoder_id;
 468
 469         if (drmIoctl(fd, DRM_IOCTL_MODE_GETENCODER, &enc))
 470                 return 0;
 471
 472         if (!(r = drmMalloc(sizeof(*r))))
 473                 return 0;
 474
 475         r->encoder_id = enc.encoder_id;
 476         r->crtc_id = enc.crtc_id;
 477         r->encoder_type = enc.encoder_type;
 478         r->possible_crtcs = enc.possible_crtcs;
 479         r->possible_clones = enc.possible_clones;
 480
 481         return r;
 482 }
 483
 484 /*
 485  * Connector manipulation
 486  */
 487 static drmModeConnectorPtr
 488 _drmModeGetConnector(int fd, uint32_t connector_id, int probe)
 489 {
 490         struct drm_mode_get_connector conn, counts;
 491         drmModeConnectorPtr r = NULL;
 492         struct drm_mode_modeinfo stack_mode;
 493
 494         memclear(conn);
 495         conn.connector_id = connector_id;
 496         if (!probe) {
 497                 conn.count_modes = 1;
 498                 conn.modes_ptr = VOID2U64(&stack_mode);
 499         }
 500
 501         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
 502                 return 0;
 503
 504 retry:
 505         counts = conn;
 506
 507         if (conn.count_props) {
 508                 conn.props_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint32_t)));
 509                 if (!conn.props_ptr)
 510                         goto err_allocs;
 511                 conn.prop_values_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint64_t)));
 512                 if (!conn.prop_values_ptr)
 513                         goto err_allocs;
 514         }
 515
 516         if (conn.count_modes) {
 517                 conn.modes_ptr = VOID2U64(drmMalloc(conn.count_modes*sizeof(struct drm_mode_modeinfo)));
 518                 if (!conn.modes_ptr)
 519                         goto err_allocs;
 520         } else {
 521                 conn.count_modes = 1;
 522                 conn.modes_ptr = VOID2U64(&stack_mode);
 523         }
 524
 525         if (conn.count_encoders) {
 526                 conn.encoders_ptr = VOID2U64(drmMalloc(conn.count_encoders*sizeof(uint32_t)));
 527                 if (!conn.encoders_ptr)
 528                         goto err_allocs;
 529         }
 530
 531         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
 532                 goto err_allocs;
 533
 534         /* The number of available connectors and etc may have changed with a
 535          * hotplug event in between the ioctls, in which case the field is
 536          * silently ignored by the kernel.
 537          */
 538         if (counts.count_props < conn.count_props ||
 539             counts.count_modes < conn.count_modes ||
 540             counts.count_encoders < conn.count_encoders) {
 541                 drmFree(U642VOID(conn.props_ptr));
 542                 drmFree(U642VOID(conn.prop_values_ptr));
 543                 if (U642VOID(conn.modes_ptr) != &stack_mode)
 544                         drmFree(U642VOID(conn.modes_ptr));
 545                 drmFree(U642VOID(conn.encoders_ptr));
 546
 547                 goto retry;
 548         }
 549
 550         if(!(r = drmMalloc(sizeof(*r)))) {
 551                 goto err_allocs;
 552         }
 553
 554         r->connector_id = conn.connector_id;
 555         r->encoder_id = conn.encoder_id;
 556         r->connection   = conn.connection;
 557         r->mmWidth      = conn.mm_width;
 558         r->mmHeight     = conn.mm_height;
 559         /* convert subpixel from kernel to userspace */
 560         r->subpixel     = conn.subpixel + 1;
 561         r->count_modes  = conn.count_modes;
 562         r->count_props  = conn.count_props;
 563         r->props        = drmAllocCpy(U642VOID(conn.props_ptr), conn.count_props, sizeof(uint32_t));
 564         r->prop_values  = drmAllocCpy(U642VOID(conn.prop_values_ptr), conn.count_props, sizeof(uint64_t));
 565         r->modes        = drmAllocCpy(U642VOID(conn.modes_ptr), conn.count_modes, sizeof(struct drm_mode_modeinfo));
 566         r->count_encoders = conn.count_encoders;
 567         r->encoders     = drmAllocCpy(U642VOID(conn.encoders_ptr), conn.count_encoders, sizeof(uint32_t));
 568         r->connector_type  = conn.connector_type;
 569         r->connector_type_id = conn.connector_type_id;
 570
 571         if ((r->count_props && !r->props) ||
 572             (r->count_props && !r->prop_values) ||
 573             (r->count_modes && !r->modes) ||
 574             (r->count_encoders && !r->encoders)) {
 575                 drmFree(r->props);
 576                 drmFree(r->prop_values);
 577                 drmFree(r->modes);
 578                 drmFree(r->encoders);
 579                 drmFree(r);
 580                 r = 0;
 581         }
 582
 583 err_allocs:
 584         drmFree(U642VOID(conn.prop_values_ptr));
 585         drmFree(U642VOID(conn.props_ptr));
 586         if (U642VOID(conn.modes_ptr) != &stack_mode)
 587                 drmFree(U642VOID(conn.modes_ptr));
 588         drmFree(U642VOID(conn.encoders_ptr));
 589
 590         return r;
 591 }
 592
 593 drm_public drmModeConnectorPtr drmModeGetConnector(int fd, uint32_t connector_id)
 594 {
 595         return _drmModeGetConnector(fd, connector_id, 1);
 596 }
 597
 598 drm_public drmModeConnectorPtr drmModeGetConnectorCurrent(int fd, uint32_t connector_id)
 599 {
 600         return _drmModeGetConnector(fd, connector_id, 0);
 601 }
 602
 603 drm_public int drmModeAttachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
 604 {
 605         struct drm_mode_mode_cmd res;
 606
 607         memclear(res);
 608         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
 609         res.connector_id = connector_id;
 610
 611         return DRM_IOCTL(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
 612 }
 613
 614 drm_public int drmModeDetachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
 615 {
 616         struct drm_mode_mode_cmd res;
 617
 618         memclear(res);
 619         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
 620         res.connector_id = connector_id;
 621
 622         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
 623 }
 624
 625 drm_public drmModePropertyPtr drmModeGetProperty(int fd, uint32_t property_id)
 626 {
 627         struct drm_mode_get_property prop;
 628         drmModePropertyPtr r;
 629
 630         memclear(prop);
 631         prop.prop_id = property_id;
 632
 633         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop))
 634                 return 0;
 635
 636         if (prop.count_values)
 637                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_values * sizeof(uint64_t)));
 638
 639         if (prop.count_enum_blobs && (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
 640                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(struct drm_mode_property_enum)));
 641
 642         if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_BLOB)) {
 643                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
 644                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
 645         }
 646
 647         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop)) {
 648                 r = NULL;
 649                 goto err_allocs;
 650         }
 651
 652         if (!(r = drmMalloc(sizeof(*r))))
 653                 goto err_allocs;
 654
 655         r->prop_id = prop.prop_id;
 656         r->count_values = prop.count_values;
 657
 658         r->flags = prop.flags;
 659         if (prop.count_values)
 660                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_values, sizeof(uint64_t));
 661         if (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
 662                 r->count_enums = prop.count_enum_blobs;
 663                 r->enums = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(struct drm_mode_property_enum));
 664         } else if (prop.flags & DRM_MODE_PROP_BLOB) {
 665                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_enum_blobs, sizeof(uint32_t));
 666                 r->blob_ids = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(uint32_t));
 667                 r->count_blobs = prop.count_enum_blobs;
 668         }
 669         strncpy(r->name, prop.name, DRM_PROP_NAME_LEN);
 670         r->name[DRM_PROP_NAME_LEN-1] = 0;
 671
 672 err_allocs:
 673         drmFree(U642VOID(prop.values_ptr));
 674         drmFree(U642VOID(prop.enum_blob_ptr));
 675
 676         return r;
 677 }
 678
 679 drm_public void drmModeFreeProperty(drmModePropertyPtr ptr)
 680 {
 681         if (!ptr)
 682                 return;
 683
 684         drmFree(ptr->values);
 685         drmFree(ptr->enums);
 686         drmFree(ptr->blob_ids);
 687         drmFree(ptr);
 688 }
 689
 690 drm_public drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd,
 691                                                                                                                  uint32_t blob_id)
 692 {
 693         struct drm_mode_get_blob blob;
 694         drmModePropertyBlobPtr r;
 695
 696         memclear(blob);
 697         blob.blob_id = blob_id;
 698
 699         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob))
 700                 return NULL;
 701
 702         if (blob.length)
 703                 blob.data = VOID2U64(drmMalloc(blob.length));
 704
 705         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob)) {
 706                 r = NULL;
 707                 goto err_allocs;
 708         }
 709
 710         if (!(r = drmMalloc(sizeof(*r))))
 711                 goto err_allocs;
 712
 713         r->id = blob.blob_id;
 714         r->length = blob.length;
 715         r->data = drmAllocCpy(U642VOID(blob.data), 1, blob.length);
 716
 717 err_allocs:
 718         drmFree(U642VOID(blob.data));
 719         return r;
 720 }
 721
 722 drm_public void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)
 723 {
 724         if (!ptr)
 725                 return;
 726
 727         drmFree(ptr->data);
 728         drmFree(ptr);
 729 }
 730
 731 drm_public int drmModeConnectorSetProperty(int fd, uint32_t connector_id,
 732                                                                                    uint32_t property_id,
 733                                                                                    uint64_t value)
 734 {
 735         struct drm_mode_connector_set_property osp;
 736
 737         memclear(osp);
 738         osp.connector_id = connector_id;
 739         osp.prop_id = property_id;
 740         osp.value = value;
 741
 742         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPROPERTY, &osp);
 743 }
 744
 745 /*
 746  * checks if a modesetting capable driver has attached to the pci id
 747  * returns 0 if modesetting supported.
 748  *  -EINVAL or invalid bus id
 749  *  -ENOSYS if no modesetting support
 750 */
 751 drm_public int drmCheckModesettingSupported(const char *busid)
 752 {
 753 #if defined (__linux__)
 754         char pci_dev_dir[1024];
 755         int domain, bus, dev, func;
 756         DIR *sysdir;
 757         struct dirent *dent;
 758         int found = 0, ret;
 759
 760         ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev, &func);
 761         if (ret != 4)
 762                 return -EINVAL;
 763
 764         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/drm",
 765                 domain, bus, dev, func);
 766
 767         sysdir = opendir(pci_dev_dir);
 768         if (sysdir) {
 769                 dent = readdir(sysdir);
 770                 while (dent) {
 771                         if (!strncmp(dent->d_name, "controlD", 8)) {
 772                                 found = 1;
 773                                 break;
 774                         }
 775
 776                         dent = readdir(sysdir);
 777                 }
 778                 closedir(sysdir);
 779                 if (found)
 780                         return 0;
 781         }
 782
 783         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/",
 784                 domain, bus, dev, func);
 785
 786         sysdir = opendir(pci_dev_dir);
 787         if (!sysdir)
 788                 return -EINVAL;
 789
 790         dent = readdir(sysdir);
 791         while (dent) {
 792                 if (!strncmp(dent->d_name, "drm:controlD", 12)) {
 793                         found = 1;
 794                         break;
 795                 }
 796
 797                 dent = readdir(sysdir);
 798         }
 799
 800         closedir(sysdir);
 801         if (found)
 802                 return 0;
 803 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
 804         char sbusid[1024];
 805         char oid[128];
 806         int i, modesetting, ret;
 807         size_t len;
 808
 809         /* How many GPUs do we expect in the machine ? */
 810         for (i = 0; i < 10; i++) {
 811                 snprintf(oid, sizeof(oid), "hw.dri.%d.busid", i);
 812                 len = sizeof(sbusid);
 813                 ret = sysctlbyname(oid, sbusid, &len, NULL, 0);
 814                 if (ret == -1) {
 815                         if (errno == ENOENT)
 816                                 continue;
 817                         return -EINVAL;
 818                 }
 819                 if (strcmp(sbusid, busid) != 0)
 820                         continue;
 821                 snprintf(oid, sizeof(oid), "hw.dri.%d.modesetting", i);
 822                 len = sizeof(modesetting);
 823                 ret = sysctlbyname(oid, &modesetting, &len, NULL, 0);
 824                 if (ret == -1 || len != sizeof(modesetting))
 825                         return -EINVAL;
 826                 return (modesetting ? 0 : -ENOSYS);
 827         }
 828 #elif defined(__DragonFly__)
 829         return 0;
 830 #elif defined(__OpenBSD__)
 831         int     fd;
 832         struct drm_mode_card_res res;
 833         drmModeResPtr r = 0;
 834
 835         if ((fd = drmOpen(NULL, busid)) < 0)
 836                 return -EINVAL;
 837
 838         memset(&res, 0, sizeof(struct drm_mode_card_res));
 839
 840         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res)) {
 841                 drmClose(fd);
 842                 return -errno;
 843         }
 844
 845         drmClose(fd);
 846         return 0;
 847 #endif
 848         return -ENOSYS;
 849 }
 850
 851 drm_public int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
 852                                                                    uint16_t *red, uint16_t *green,
 853                                                                    uint16_t *blue)
 854 {
 855         struct drm_mode_crtc_lut l;
 856
 857         memclear(l);
 858         l.crtc_id = crtc_id;
 859         l.gamma_size = size;
 860         l.red = VOID2U64(red);
 861         l.green = VOID2U64(green);
 862         l.blue = VOID2U64(blue);
 863
 864         return DRM_IOCTL(fd, DRM_IOCTL_MODE_GETGAMMA, &l);
 865 }
 866
 867 drm_public int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
 868                                                                    uint16_t *red, uint16_t *green,
 869                                                                    uint16_t *blue)
 870 {
 871         struct drm_mode_crtc_lut l;
 872
 873         memclear(l);
 874         l.crtc_id = crtc_id;
 875         l.gamma_size = size;
 876         l.red = VOID2U64(red);
 877         l.green = VOID2U64(green);
 878         l.blue = VOID2U64(blue);
 879
 880         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETGAMMA, &l);
 881 }
 882
 883 drm_public int drmHandleEvent(int fd, drmEventContextPtr evctx)
 884 {
 885         char buffer[1024];
 886         int len, i;
 887         struct drm_event *e;
 888         struct drm_event_vblank *vblank;
 889         struct drm_event_crtc_sequence *seq;
 890         void *user_data;
 891
 892         /* The DRM read semantics guarantees that we always get only
 893          * complete events. */
 894
 895         len = read(fd, buffer, sizeof buffer);
 896         if (len == 0)
 897                 return 0;
 898         if (len < (int)sizeof *e)
 899                 return -1;
 900
 901         i = 0;
 902         while (i < len) {
 903                 e = (struct drm_event *)(buffer + i);
 904                 switch (e->type) {
 905                 case DRM_EVENT_VBLANK:
 906                         if (evctx->version < 1 ||
 907                             evctx->vblank_handler == NULL)
 908                                 break;
 909                         vblank = (struct drm_event_vblank *) e;
 910                         evctx->vblank_handler(fd,
 911                                               vblank->sequence,
 912                                               vblank->tv_sec,
 913                                               vblank->tv_usec,
 914                                               U642VOID (vblank->user_data));
 915                         break;
 916                 case DRM_EVENT_FLIP_COMPLETE:
 917                         vblank = (struct drm_event_vblank *) e;
 918                         user_data = U642VOID (vblank->user_data);
 919
 920                         if (evctx->version >= 3 && evctx->page_flip_handler2)
 921                                 evctx->page_flip_handler2(fd,
 922                                                          vblank->sequence,
 923                                                          vblank->tv_sec,
 924                                                          vblank->tv_usec,
 925                                                          vblank->crtc_id,
 926                                                          user_data);
 927                         else if (evctx->version >= 2 && evctx->page_flip_handler)
 928                                 evctx->page_flip_handler(fd,
 929                                                          vblank->sequence,
 930                                                          vblank->tv_sec,
 931                                                          vblank->tv_usec,
 932                                                          user_data);
 933                         break;
 934                 case DRM_EVENT_CRTC_SEQUENCE:
 935                         seq = (struct drm_event_crtc_sequence *) e;
 936                         if (evctx->version >= 4 && evctx->sequence_handler)
 937                                 evctx->sequence_handler(fd,
 938                                                         seq->sequence,
 939                                                         seq->time_ns,
 940                                                         seq->user_data);
 941                         break;
 942                 default:
 943                         break;
 944                 }
 945                 i += e->length;
 946         }
 947
 948         return 0;
 949 }
 950
 951 drm_public int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
 952                     uint32_t flags, void *user_data)
 953 {
 954         struct drm_mode_crtc_page_flip flip;
 955
 956         memclear(flip);
 957         flip.fb_id = fb_id;
 958         flip.crtc_id = crtc_id;
 959         flip.user_data = VOID2U64(user_data);
 960         flip.flags = flags;
 961
 962         return DRM_IOCTL(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);
 963 }
 964
 965 drm_public int drmModePageFlipTarget(int fd, uint32_t crtc_id, uint32_t fb_id,
 966                           uint32_t flags, void *user_data,
 967                           uint32_t target_vblank)
 968 {
 969         struct drm_mode_crtc_page_flip_target flip_target;
 970
 971         memclear(flip_target);
 972         flip_target.fb_id = fb_id;
 973         flip_target.crtc_id = crtc_id;
 974         flip_target.user_data = VOID2U64(user_data);
 975         flip_target.flags = flags;
 976         flip_target.sequence = target_vblank;
 977
 978         return DRM_IOCTL(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip_target);
 979 }
 980
 981 drm_public int drmModeSetPlane(int fd, uint32_t plane_id, uint32_t crtc_id,
 982                     uint32_t fb_id, uint32_t flags,
 983                     int32_t crtc_x, int32_t crtc_y,
 984                     uint32_t crtc_w, uint32_t crtc_h,
 985                     uint32_t src_x, uint32_t src_y,
 986                     uint32_t src_w, uint32_t src_h)
 987 {
 988         struct drm_mode_set_plane s;
 989
 990         memclear(s);
 991         s.plane_id = plane_id;
 992         s.crtc_id = crtc_id;
 993         s.fb_id = fb_id;
 994         s.flags = flags;
 995         s.crtc_x = crtc_x;
 996         s.crtc_y = crtc_y;
 997         s.crtc_w = crtc_w;
 998         s.crtc_h = crtc_h;
 999         s.src_x = src_x;
1000         s.src_y = src_y;
1001         s.src_w = src_w;
1002         s.src_h = src_h;
1003
1004         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPLANE, &s);
1005 }
1006
1007 drm_public drmModePlanePtr drmModeGetPlane(int fd, uint32_t plane_id)
1008 {
1009         struct drm_mode_get_plane ovr, counts;
1010         drmModePlanePtr r = 0;
1011
1012 retry:
1013         memclear(ovr);
1014         ovr.plane_id = plane_id;
1015         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
1016                 return 0;
1017
1018         counts = ovr;
1019
1020         if (ovr.count_format_types) {
1021                 ovr.format_type_ptr = VOID2U64(drmMalloc(ovr.count_format_types *
1022                                                          sizeof(uint32_t)));
1023                 if (!ovr.format_type_ptr)
1024                         goto err_allocs;
1025         }
1026
1027         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
1028                 goto err_allocs;
1029
1030         if (counts.count_format_types < ovr.count_format_types) {
1031                 drmFree(U642VOID(ovr.format_type_ptr));
1032                 goto retry;
1033         }
1034
1035         if (!(r = drmMalloc(sizeof(*r))))
1036                 goto err_allocs;
1037
1038         r->count_formats = ovr.count_format_types;
1039         r->plane_id = ovr.plane_id;
1040         r->crtc_id = ovr.crtc_id;
1041         r->fb_id = ovr.fb_id;
1042         r->possible_crtcs = ovr.possible_crtcs;
1043         r->gamma_size = ovr.gamma_size;
1044         r->formats = drmAllocCpy(U642VOID(ovr.format_type_ptr),
1045                                  ovr.count_format_types, sizeof(uint32_t));
1046         if (ovr.count_format_types && !r->formats) {
1047                 drmFree(r->formats);
1048                 drmFree(r);
1049                 r = 0;
1050         }
1051
1052 err_allocs:
1053         drmFree(U642VOID(ovr.format_type_ptr));
1054
1055         return r;
1056 }
1057
1058 drm_public void drmModeFreePlane(drmModePlanePtr ptr)
1059 {
1060         if (!ptr)
1061                 return;
1062
1063         drmFree(ptr->formats);
1064         drmFree(ptr);
1065 }
1066
1067 drm_public drmModePlaneResPtr drmModeGetPlaneResources(int fd)
1068 {
1069         struct drm_mode_get_plane_res res, counts;
1070         drmModePlaneResPtr r = 0;
1071
1072 retry:
1073         memclear(res);
1074         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1075                 return 0;
1076
1077         counts = res;
1078
1079         if (res.count_planes) {
1080                 res.plane_id_ptr = VOID2U64(drmMalloc(res.count_planes *
1081                                                         sizeof(uint32_t)));
1082                 if (!res.plane_id_ptr)
1083                         goto err_allocs;
1084         }
1085
1086         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1087                 goto err_allocs;
1088
1089         if (counts.count_planes < res.count_planes) {
1090                 drmFree(U642VOID(res.plane_id_ptr));
1091                 goto retry;
1092         }
1093
1094         if (!(r = drmMalloc(sizeof(*r))))
1095                 goto err_allocs;
1096
1097         r->count_planes = res.count_planes;
1098         r->planes = drmAllocCpy(U642VOID(res.plane_id_ptr),
1099                                   res.count_planes, sizeof(uint32_t));
1100         if (res.count_planes && !r->planes) {
1101                 drmFree(r->planes);
1102                 drmFree(r);
1103                 r = 0;
1104         }
1105
1106 err_allocs:
1107         drmFree(U642VOID(res.plane_id_ptr));
1108
1109         return r;
1110 }
1111
1112 drm_public void drmModeFreePlaneResources(drmModePlaneResPtr ptr)
1113 {
1114         if (!ptr)
1115                 return;
1116
1117         drmFree(ptr->planes);
1118         drmFree(ptr);
1119 }
1120
1121 drm_public drmModeObjectPropertiesPtr drmModeObjectGetProperties(int fd,
1122                                                       uint32_t object_id,
1123                                                       uint32_t object_type)
1124 {
1125         struct drm_mode_obj_get_properties properties;
1126         drmModeObjectPropertiesPtr ret = NULL;
1127         uint32_t count;
1128
1129 retry:
1130         memclear(properties);
1131         properties.obj_id = object_id;
1132         properties.obj_type = object_type;
1133
1134         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1135                 return 0;
1136
1137         count = properties.count_props;
1138
1139         if (count) {
1140                 properties.props_ptr = VOID2U64(drmMalloc(count *
1141                                                           sizeof(uint32_t)));
1142                 if (!properties.props_ptr)
1143                         goto err_allocs;
1144                 properties.prop_values_ptr = VOID2U64(drmMalloc(count *
1145                                                       sizeof(uint64_t)));
1146                 if (!properties.prop_values_ptr)
1147                         goto err_allocs;
1148         }
1149
1150         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1151                 goto err_allocs;
1152
1153         if (count < properties.count_props) {
1154                 drmFree(U642VOID(properties.props_ptr));
1155                 drmFree(U642VOID(properties.prop_values_ptr));
1156                 goto retry;
1157         }
1158         count = properties.count_props;
1159
1160         ret = drmMalloc(sizeof(*ret));
1161         if (!ret)
1162                 goto err_allocs;
1163
1164         ret->count_props = count;
1165         ret->props = drmAllocCpy(U642VOID(properties.props_ptr),
1166                                  count, sizeof(uint32_t));
1167         ret->prop_values = drmAllocCpy(U642VOID(properties.prop_values_ptr),
1168                                        count, sizeof(uint64_t));
1169         if (ret->count_props && (!ret->props || !ret->prop_values)) {
1170                 drmFree(ret->props);
1171                 drmFree(ret->prop_values);
1172                 drmFree(ret);
1173                 ret = NULL;
1174         }
1175
1176 err_allocs:
1177         drmFree(U642VOID(properties.props_ptr));
1178         drmFree(U642VOID(properties.prop_values_ptr));
1179         return ret;
1180 }
1181
1182 drm_public void drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr)
1183 {
1184         if (!ptr)
1185                 return;
1186         drmFree(ptr->props);
1187         drmFree(ptr->prop_values);
1188         drmFree(ptr);
1189 }
1190
1191 drm_public int drmModeObjectSetProperty(int fd, uint32_t object_id, uint32_t object_type,
1192                              uint32_t property_id, uint64_t value)
1193 {
1194         struct drm_mode_obj_set_property prop;
1195
1196         memclear(prop);
1197         prop.value = value;
1198         prop.prop_id = property_id;
1199         prop.obj_id = object_id;
1200         prop.obj_type = object_type;
1201
1202         return DRM_IOCTL(fd, DRM_IOCTL_MODE_OBJ_SETPROPERTY, &prop);
1203 }
1204
1205 typedef struct _drmModeAtomicReqItem drmModeAtomicReqItem, *drmModeAtomicReqItemPtr;
1206
1207 struct _drmModeAtomicReqItem {
1208         uint32_t object_id;
1209         uint32_t property_id;
1210         uint64_t value;
1211 };
1212
1213 struct _drmModeAtomicReq {
1214         uint32_t cursor;
1215         uint32_t size_items;
1216         drmModeAtomicReqItemPtr items;
1217 };
1218
1219 drm_public drmModeAtomicReqPtr drmModeAtomicAlloc(void)
1220 {
1221         drmModeAtomicReqPtr req;
1222
1223         req = drmMalloc(sizeof *req);
1224         if (!req)
1225                 return NULL;
1226
1227         req->items = NULL;
1228         req->cursor = 0;
1229         req->size_items = 0;
1230
1231         return req;
1232 }
1233
1234 drm_public drmModeAtomicReqPtr drmModeAtomicDuplicate(drmModeAtomicReqPtr old)
1235 {
1236         drmModeAtomicReqPtr new;
1237
1238         if (!old)
1239                 return NULL;
1240
1241         new = drmMalloc(sizeof *new);
1242         if (!new)
1243                 return NULL;
1244
1245         new->cursor = old->cursor;
1246         new->size_items = old->size_items;
1247
1248         if (old->size_items) {
1249                 new->items = drmMalloc(old->size_items * sizeof(*new->items));
1250                 if (!new->items) {
1251                         free(new);
1252                         return NULL;
1253                 }
1254                 memcpy(new->items, old->items,
1255                        old->cursor * sizeof(*new->items));
1256         } else {
1257                 new->items = NULL;
1258         }
1259
1260         return new;
1261 }
1262
1263 drm_public int drmModeAtomicMerge(drmModeAtomicReqPtr base,
1264                                   drmModeAtomicReqPtr augment)
1265 {
1266         if (!base)
1267                 return -EINVAL;
1268
1269         if (!augment || augment->cursor == 0)
1270                 return 0;
1271
1272         if (base->cursor + augment->cursor >= base->size_items) {
1273                 drmModeAtomicReqItemPtr new;
1274                 int saved_size = base->size_items;
1275
1276                 base->size_items = base->cursor + augment->cursor;
1277                 new = realloc(base->items,
1278                               base->size_items * sizeof(*base->items));
1279                 if (!new) {
1280                         base->size_items = saved_size;
1281                         return -ENOMEM;
1282                 }
1283                 base->items = new;
1284         }
1285
1286         memcpy(&base->items[base->cursor], augment->items,
1287                augment->cursor * sizeof(*augment->items));
1288         base->cursor += augment->cursor;
1289
1290         return 0;
1291 }
1292
1293 drm_public int drmModeAtomicGetCursor(drmModeAtomicReqPtr req)
1294 {
1295         if (!req)
1296                 return -EINVAL;
1297         return req->cursor;
1298 }
1299
1300 drm_public void drmModeAtomicSetCursor(drmModeAtomicReqPtr req, int cursor)
1301 {
1302         if (req)
1303                 req->cursor = cursor;
1304 }
1305
1306 drm_public int drmModeAtomicAddProperty(drmModeAtomicReqPtr req,
1307                                         uint32_t object_id,
1308                                         uint32_t property_id,
1309                                         uint64_t value)
1310 {
1311         if (!req)
1312                 return -EINVAL;
1313
1314         if (object_id == 0 || property_id == 0)
1315                 return -EINVAL;
1316
1317         if (req->cursor >= req->size_items) {
1318                 const uint32_t item_size_inc = getpagesize() / sizeof(*req->items);
1319                 drmModeAtomicReqItemPtr new;
1320
1321                 req->size_items += item_size_inc;
1322                 new = realloc(req->items, req->size_items * sizeof(*req->items));
1323                 if (!new) {
1324                         req->size_items -= item_size_inc;
1325                         return -ENOMEM;
1326                 }
1327                 req->items = new;
1328         }
1329
1330         req->items[req->cursor].object_id = object_id;
1331         req->items[req->cursor].property_id = property_id;
1332         req->items[req->cursor].value = value;
1333         req->cursor++;
1334
1335         return req->cursor;
1336 }
1337
1338 drm_public void drmModeAtomicFree(drmModeAtomicReqPtr req)
1339 {
1340         if (!req)
1341                 return;
1342
1343         if (req->items)
1344                 drmFree(req->items);
1345         drmFree(req);
1346 }
1347
1348 static int sort_req_list(const void *misc, const void *other)
1349 {
1350         const drmModeAtomicReqItem *first = misc;
1351         const drmModeAtomicReqItem *second = other;
1352
1353         if (first->object_id < second->object_id)
1354                 return -1;
1355         else if (first->object_id > second->object_id)
1356                 return 1;
1357         else
1358                 return second->property_id - first->property_id;
1359 }
1360
1361 drm_public int drmModeAtomicCommit(int fd, drmModeAtomicReqPtr req,
1362                                    uint32_t flags, void *user_data)
1363 {
1364         drmModeAtomicReqPtr sorted;
1365         struct drm_mode_atomic atomic;
1366         uint32_t *objs_ptr = NULL;
1367         uint32_t *count_props_ptr = NULL;
1368         uint32_t *props_ptr = NULL;
1369         uint64_t *prop_values_ptr = NULL;
1370         uint32_t last_obj_id = 0;
1371         uint32_t i;
1372         int obj_idx = -1;
1373         int ret = -1;
1374
1375         if (!req)
1376                 return -EINVAL;
1377
1378         if (req->cursor == 0)
1379                 return 0;
1380
1381         sorted = drmModeAtomicDuplicate(req);
1382         if (sorted == NULL)
1383                 return -ENOMEM;
1384
1385         memclear(atomic);
1386
1387         /* Sort the list by object ID, then by property ID. */
1388         qsort(sorted->items, sorted->cursor, sizeof(*sorted->items),
1389               sort_req_list);
1390
1391         /* Now the list is sorted, eliminate duplicate property sets. */
1392         for (i = 0; i < sorted->cursor; i++) {
1393                 if (sorted->items[i].object_id != last_obj_id) {
1394                         atomic.count_objs++;
1395                         last_obj_id = sorted->items[i].object_id;
1396                 }
1397
1398                 if (i == sorted->cursor - 1)
1399                         continue;
1400
1401                 if (sorted->items[i].object_id != sorted->items[i + 1].object_id ||
1402                     sorted->items[i].property_id != sorted->items[i + 1].property_id)
1403                         continue;
1404
1405                 memmove(&sorted->items[i], &sorted->items[i + 1],
1406                         (sorted->cursor - i - 1) * sizeof(*sorted->items));
1407                 sorted->cursor--;
1408         }
1409
1410         objs_ptr = drmMalloc(atomic.count_objs * sizeof objs_ptr[0]);
1411         if (!objs_ptr) {
1412                 errno = ENOMEM;
1413                 goto out;
1414         }
1415
1416         count_props_ptr = drmMalloc(atomic.count_objs * sizeof count_props_ptr[0]);
1417         if (!count_props_ptr) {
1418                 errno = ENOMEM;
1419                 goto out;
1420         }
1421
1422         props_ptr = drmMalloc(sorted->cursor * sizeof props_ptr[0]);
1423         if (!props_ptr) {
1424                 errno = ENOMEM;
1425                 goto out;
1426         }
1427
1428         prop_values_ptr = drmMalloc(sorted->cursor * sizeof prop_values_ptr[0]);
1429         if (!prop_values_ptr) {
1430                 errno = ENOMEM;
1431                 goto out;
1432         }
1433
1434         for (i = 0, last_obj_id = 0; i < sorted->cursor; i++) {
1435                 if (sorted->items[i].object_id != last_obj_id) {
1436                         obj_idx++;
1437                         objs_ptr[obj_idx] = sorted->items[i].object_id;
1438                         last_obj_id = objs_ptr[obj_idx];
1439                 }
1440
1441                 count_props_ptr[obj_idx]++;
1442                 props_ptr[i] = sorted->items[i].property_id;
1443                 prop_values_ptr[i] = sorted->items[i].value;
1444
1445         }
1446
1447         atomic.flags = flags;
1448         atomic.objs_ptr = VOID2U64(objs_ptr);
1449         atomic.count_props_ptr = VOID2U64(count_props_ptr);
1450         atomic.props_ptr = VOID2U64(props_ptr);
1451         atomic.prop_values_ptr = VOID2U64(prop_values_ptr);
1452         atomic.user_data = VOID2U64(user_data);
1453
1454         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ATOMIC, &atomic);
1455
1456 out:
1457         drmFree(objs_ptr);
1458         drmFree(count_props_ptr);
1459         drmFree(props_ptr);
1460         drmFree(prop_values_ptr);
1461         drmModeAtomicFree(sorted);
1462
1463         return ret;
1464 }
1465
1466 drm_public int
1467 drmModeCreatePropertyBlob(int fd, const void *data, size_t length,
1468                                      uint32_t *id)
1469 {
1470         struct drm_mode_create_blob create;
1471         int ret;
1472
1473         if (length >= 0xffffffff)
1474                 return -ERANGE;
1475
1476         memclear(create);
1477
1478         create.length = length;
1479         create.data = (uintptr_t) data;
1480         create.blob_id = 0;
1481         *id = 0;
1482
1483         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATEPROPBLOB, &create);
1484         if (ret != 0)
1485                 return ret;
1486
1487         *id = create.blob_id;
1488         return 0;
1489 }
1490
1491 drm_public int
1492 drmModeDestroyPropertyBlob(int fd, uint32_t id)
1493 {
1494         struct drm_mode_destroy_blob destroy;
1495
1496         memclear(destroy);
1497         destroy.blob_id = id;
1498         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DESTROYPROPBLOB, &destroy);
1499 }
1500
1501 drm_public int
1502 drmModeCreateLease(int fd, const uint32_t *objects, int num_objects, int flags,
1503                    uint32_t *lessee_id)
1504 {
1505         struct drm_mode_create_lease create;
1506         int ret;
1507
1508         memclear(create);
1509         create.object_ids = (uintptr_t) objects;
1510         create.object_count = num_objects;
1511         create.flags = flags;
1512
1513         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATE_LEASE, &create);
1514         if (ret == 0) {
1515                 *lessee_id = create.lessee_id;
1516                 return create.fd;
1517         }
1518         return -errno;
1519 }
1520
1521 drm_public drmModeLesseeListPtr
1522 drmModeListLessees(int fd)
1523 {
1524         struct drm_mode_list_lessees list;
1525         uint32_t count;
1526         drmModeLesseeListPtr ret;
1527
1528         memclear(list);
1529
1530         if (DRM_IOCTL(fd, DRM_IOCTL_MODE_LIST_LESSEES, &list))
1531                 return NULL;
1532
1533         count = list.count_lessees;
1534         ret = drmMalloc(sizeof (drmModeLesseeListRes) + count * sizeof (ret->lessees[0]));
1535         if (!ret)
1536                 return NULL;
1537
1538         list.lessees_ptr = VOID2U64(&ret->lessees[0]);
1539         if (DRM_IOCTL(fd, DRM_IOCTL_MODE_LIST_LESSEES, &list)) {
1540                 drmFree(ret);
1541                 return NULL;
1542         }
1543
1544         ret->count = count;
1545         return ret;
1546 }
1547
1548 drm_public drmModeObjectListPtr
1549 drmModeGetLease(int fd)
1550 {
1551         struct drm_mode_get_lease get;
1552         uint32_t count;
1553         drmModeObjectListPtr ret;
1554
1555         memclear(get);
1556
1557         if (DRM_IOCTL(fd, DRM_IOCTL_MODE_GET_LEASE, &get))
1558                 return NULL;
1559
1560         count = get.count_objects;
1561         ret = drmMalloc(sizeof (drmModeObjectListRes) + count * sizeof (ret->objects[0]));
1562         if (!ret)
1563                 return NULL;
1564
1565         get.objects_ptr = VOID2U64(&ret->objects[0]);
1566         if (DRM_IOCTL(fd, DRM_IOCTL_MODE_GET_LEASE, &get)) {
1567                 drmFree(ret);
1568                 return NULL;
1569         }
1570
1571         ret->count = count;
1572         return ret;
1573 }
1574
1575 drm_public int
1576 drmModeRevokeLease(int fd, uint32_t lessee_id)
1577 {
1578         struct drm_mode_revoke_lease revoke;
1579         int ret;
1580
1581         memclear(revoke);
1582
1583         revoke.lessee_id = lessee_id;
1584
1585         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_REVOKE_LEASE, &revoke);
1586         if (ret == 0)
1587                 return 0;
1588         return -errno;
1589 }
1590
1591 drm_public drmModeFB2Ptr
1592 drmModeGetFB2(int fd, uint32_t fb_id)
1593 {
1594         struct drm_mode_fb_cmd2 get = {
1595                 .fb_id = fb_id,
1596         };
1597         drmModeFB2Ptr ret;
1598         int err;
1599
1600         err = DRM_IOCTL(fd, DRM_IOCTL_MODE_GETFB2, &get);
1601         if (err != 0)
1602                 return NULL;
1603
1604         ret = drmMalloc(sizeof(drmModeFB2));
1605         if (!ret)
1606                 return NULL;
1607
1608         ret->fb_id = fb_id;
1609         ret->width = get.width;
1610         ret->height = get.height;
1611         ret->pixel_format = get.pixel_format;
1612         ret->flags = get.flags;
1613         ret->modifier = get.modifier[0];
1614         memcpy(ret->handles, get.handles, sizeof(uint32_t) * 4);
1615         memcpy(ret->pitches, get.pitches, sizeof(uint32_t) * 4);
1616         memcpy(ret->offsets, get.offsets, sizeof(uint32_t) * 4);
1617
1618         return ret;
1619 }
1620
1621 drm_public void drmModeFreeFB2(drmModeFB2Ptr ptr)
1622 {
1623         drmFree(ptr);
1624 }