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 #include <assert.h>
  37 #include <limits.h>
  38 #include <stdint.h>
  39 #include <stdlib.h>
  40 #include <sys/ioctl.h>
  41 #if HAVE_SYS_SYSCTL_H
  42 #ifdef __FreeBSD__
  43 #include <sys/types.h>
  44 #endif
  45 #include <sys/sysctl.h>
  46 #endif
  47 #include <stdio.h>
  48 #include <stdbool.h>
  49
  50 #include "libdrm_macros.h"
  51 #include "xf86drmMode.h"
  52 #include "xf86drm.h"
  53 #include <drm.h>
  54 #include <drm_fourcc.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 int drmIsKMS(int fd)
 155 {
 156         struct drm_mode_card_res res = {0};
 157
 158         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res) != 0)
 159                 return 0;
 160
 161         return res.count_crtcs > 0 && res.count_connectors > 0 && res.count_encoders > 0;
 162 }
 163
 164 drm_public 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
 259 drm_public int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
 260                             uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
 261                             uint32_t *buf_id)
 262 {
 263         struct drm_mode_fb_cmd f;
 264         int ret;
 265
 266         memclear(f);
 267         f.width  = width;
 268         f.height = height;
 269         f.pitch  = pitch;
 270         f.bpp    = bpp;
 271         f.depth  = depth;
 272         f.handle = bo_handle;
 273
 274         if ((ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ADDFB, &f)))
 275                 return ret;
 276
 277         *buf_id = f.fb_id;
 278         return 0;
 279 }
 280
 281 drm_public int drmModeAddFB2WithModifiers(int fd, uint32_t width,
 282                 uint32_t height, uint32_t pixel_format, const uint32_t bo_handles[4],
 283                 const uint32_t pitches[4], const uint32_t offsets[4],
 284                 const uint64_t modifier[4], uint32_t *buf_id, uint32_t flags)
 285 {
 286         struct drm_mode_fb_cmd2 f;
 287         int ret;
 288
 289         memclear(f);
 290         f.width  = width;
 291         f.height = height;
 292         f.pixel_format = pixel_format;
 293         f.flags = flags;
 294         memcpy(f.handles, bo_handles, 4 * sizeof(bo_handles[0]));
 295         memcpy(f.pitches, pitches, 4 * sizeof(pitches[0]));
 296         memcpy(f.offsets, offsets, 4 * sizeof(offsets[0]));
 297         if (modifier)
 298                 memcpy(f.modifier, modifier, 4 * sizeof(modifier[0]));
 299
 300         if ((ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ADDFB2, &f)))
 301                 return ret;
 302
 303         *buf_id = f.fb_id;
 304         return 0;
 305 }
 306
 307 drm_public int drmModeAddFB2(int fd, uint32_t width, uint32_t height,
 308                 uint32_t pixel_format, const uint32_t bo_handles[4],
 309                 const uint32_t pitches[4], const uint32_t offsets[4],
 310                 uint32_t *buf_id, uint32_t flags)
 311 {
 312         return drmModeAddFB2WithModifiers(fd, width, height,
 313                                           pixel_format, bo_handles,
 314                                           pitches, offsets, NULL,
 315                                           buf_id, flags);
 316 }
 317
 318 drm_public int drmModeRmFB(int fd, uint32_t bufferId)
 319 {
 320         return DRM_IOCTL(fd, DRM_IOCTL_MODE_RMFB, &bufferId);
 321 }
 322
 323 drm_public drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
 324 {
 325         struct drm_mode_fb_cmd info;
 326         drmModeFBPtr r;
 327
 328         memclear(info);
 329         info.fb_id = buf;
 330
 331         if (drmIoctl(fd, DRM_IOCTL_MODE_GETFB, &info))
 332                 return NULL;
 333
 334         if (!(r = drmMalloc(sizeof(*r))))
 335                 return NULL;
 336
 337         r->fb_id = info.fb_id;
 338         r->width = info.width;
 339         r->height = info.height;
 340         r->pitch = info.pitch;
 341         r->bpp = info.bpp;
 342         r->handle = info.handle;
 343         r->depth = info.depth;
 344
 345         return r;
 346 }
 347
 348 drm_public int drmModeDirtyFB(int fd, uint32_t bufferId,
 349                    drmModeClipPtr clips, uint32_t num_clips)
 350 {
 351         struct drm_mode_fb_dirty_cmd dirty;
 352
 353         memclear(dirty);
 354         dirty.fb_id = bufferId;
 355         dirty.clips_ptr = VOID2U64(clips);
 356         dirty.num_clips = num_clips;
 357
 358         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DIRTYFB, &dirty);
 359 }
 360
 361 /*
 362  * Crtc functions
 363  */
 364
 365 drm_public drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
 366 {
 367         struct drm_mode_crtc crtc;
 368         drmModeCrtcPtr r;
 369
 370         memclear(crtc);
 371         crtc.crtc_id = crtcId;
 372
 373         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCRTC, &crtc))
 374                 return 0;
 375
 376         /*
 377          * return
 378          */
 379
 380         if (!(r = drmMalloc(sizeof(*r))))
 381                 return 0;
 382
 383         r->crtc_id         = crtc.crtc_id;
 384         r->x               = crtc.x;
 385         r->y               = crtc.y;
 386         r->mode_valid      = crtc.mode_valid;
 387         if (r->mode_valid) {
 388                 memcpy(&r->mode, &crtc.mode, sizeof(struct drm_mode_modeinfo));
 389                 r->width = crtc.mode.hdisplay;
 390                 r->height = crtc.mode.vdisplay;
 391         }
 392         r->buffer_id       = crtc.fb_id;
 393         r->gamma_size      = crtc.gamma_size;
 394         return r;
 395 }
 396
 397 drm_public int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
 398                    uint32_t x, uint32_t y, uint32_t *connectors, int count,
 399                    drmModeModeInfoPtr mode)
 400 {
 401         struct drm_mode_crtc crtc;
 402
 403         memclear(crtc);
 404         crtc.x             = x;
 405         crtc.y             = y;
 406         crtc.crtc_id       = crtcId;
 407         crtc.fb_id         = bufferId;
 408         crtc.set_connectors_ptr = VOID2U64(connectors);
 409         crtc.count_connectors = count;
 410         if (mode) {
 411           memcpy(&crtc.mode, mode, sizeof(struct drm_mode_modeinfo));
 412           crtc.mode_valid = 1;
 413         }
 414
 415         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
 416 }
 417
 418 /*
 419  * Cursor manipulation
 420  */
 421
 422 drm_public int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle,
 423                                                                 uint32_t width, uint32_t height)
 424 {
 425         struct drm_mode_cursor arg;
 426
 427         memclear(arg);
 428         arg.flags = DRM_MODE_CURSOR_BO;
 429         arg.crtc_id = crtcId;
 430         arg.width = width;
 431         arg.height = height;
 432         arg.handle = bo_handle;
 433
 434         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
 435 }
 436
 437 drm_public int drmModeSetCursor2(int fd, uint32_t crtcId, uint32_t bo_handle,
 438                                                                  uint32_t width, uint32_t height, int32_t hot_x,
 439                                                                  int32_t hot_y)
 440 {
 441         struct drm_mode_cursor2 arg;
 442
 443         memclear(arg);
 444         arg.flags = DRM_MODE_CURSOR_BO;
 445         arg.crtc_id = crtcId;
 446         arg.width = width;
 447         arg.height = height;
 448         arg.handle = bo_handle;
 449         arg.hot_x = hot_x;
 450         arg.hot_y = hot_y;
 451
 452         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR2, &arg);
 453 }
 454
 455 drm_public int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y)
 456 {
 457         struct drm_mode_cursor arg;
 458
 459         memclear(arg);
 460         arg.flags = DRM_MODE_CURSOR_MOVE;
 461         arg.crtc_id = crtcId;
 462         arg.x = x;
 463         arg.y = y;
 464
 465         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
 466 }
 467
 468 /*
 469  * Encoder get
 470  */
 471 drm_public drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id)
 472 {
 473         struct drm_mode_get_encoder enc;
 474         drmModeEncoderPtr r = NULL;
 475
 476         memclear(enc);
 477         enc.encoder_id = encoder_id;
 478
 479         if (drmIoctl(fd, DRM_IOCTL_MODE_GETENCODER, &enc))
 480                 return 0;
 481
 482         if (!(r = drmMalloc(sizeof(*r))))
 483                 return 0;
 484
 485         r->encoder_id = enc.encoder_id;
 486         r->crtc_id = enc.crtc_id;
 487         r->encoder_type = enc.encoder_type;
 488         r->possible_crtcs = enc.possible_crtcs;
 489         r->possible_clones = enc.possible_clones;
 490
 491         return r;
 492 }
 493
 494 /*
 495  * Connector manipulation
 496  */
 497 static drmModeConnectorPtr
 498 _drmModeGetConnector(int fd, uint32_t connector_id, int probe)
 499 {
 500         struct drm_mode_get_connector conn, counts;
 501         drmModeConnectorPtr r = NULL;
 502         struct drm_mode_modeinfo stack_mode;
 503
 504         memclear(conn);
 505         conn.connector_id = connector_id;
 506         if (!probe) {
 507                 conn.count_modes = 1;
 508                 conn.modes_ptr = VOID2U64(&stack_mode);
 509         }
 510
 511         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
 512                 return 0;
 513
 514 retry:
 515         counts = conn;
 516
 517         if (conn.count_props) {
 518                 conn.props_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint32_t)));
 519                 if (!conn.props_ptr)
 520                         goto err_allocs;
 521                 conn.prop_values_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint64_t)));
 522                 if (!conn.prop_values_ptr)
 523                         goto err_allocs;
 524         }
 525
 526         if (conn.count_modes) {
 527                 conn.modes_ptr = VOID2U64(drmMalloc(conn.count_modes*sizeof(struct drm_mode_modeinfo)));
 528                 if (!conn.modes_ptr)
 529                         goto err_allocs;
 530         } else {
 531                 conn.count_modes = 1;
 532                 conn.modes_ptr = VOID2U64(&stack_mode);
 533         }
 534
 535         if (conn.count_encoders) {
 536                 conn.encoders_ptr = VOID2U64(drmMalloc(conn.count_encoders*sizeof(uint32_t)));
 537                 if (!conn.encoders_ptr)
 538                         goto err_allocs;
 539         }
 540
 541         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
 542                 goto err_allocs;
 543
 544         /* The number of available connectors and etc may have changed with a
 545          * hotplug event in between the ioctls, in which case the field is
 546          * silently ignored by the kernel.
 547          */
 548         if (counts.count_props < conn.count_props ||
 549             counts.count_modes < conn.count_modes ||
 550             counts.count_encoders < conn.count_encoders) {
 551                 drmFree(U642VOID(conn.props_ptr));
 552                 drmFree(U642VOID(conn.prop_values_ptr));
 553                 if (U642VOID(conn.modes_ptr) != &stack_mode)
 554                         drmFree(U642VOID(conn.modes_ptr));
 555                 drmFree(U642VOID(conn.encoders_ptr));
 556
 557                 goto retry;
 558         }
 559
 560         if(!(r = drmMalloc(sizeof(*r)))) {
 561                 goto err_allocs;
 562         }
 563
 564         r->connector_id = conn.connector_id;
 565         r->encoder_id = conn.encoder_id;
 566         r->connection   = conn.connection;
 567         r->mmWidth      = conn.mm_width;
 568         r->mmHeight     = conn.mm_height;
 569         /* convert subpixel from kernel to userspace */
 570         r->subpixel     = conn.subpixel + 1;
 571         r->count_modes  = conn.count_modes;
 572         r->count_props  = conn.count_props;
 573         r->props        = drmAllocCpy(U642VOID(conn.props_ptr), conn.count_props, sizeof(uint32_t));
 574         r->prop_values  = drmAllocCpy(U642VOID(conn.prop_values_ptr), conn.count_props, sizeof(uint64_t));
 575         r->modes        = drmAllocCpy(U642VOID(conn.modes_ptr), conn.count_modes, sizeof(struct drm_mode_modeinfo));
 576         r->count_encoders = conn.count_encoders;
 577         r->encoders     = drmAllocCpy(U642VOID(conn.encoders_ptr), conn.count_encoders, sizeof(uint32_t));
 578         r->connector_type  = conn.connector_type;
 579         r->connector_type_id = conn.connector_type_id;
 580
 581         if ((r->count_props && !r->props) ||
 582             (r->count_props && !r->prop_values) ||
 583             (r->count_modes && !r->modes) ||
 584             (r->count_encoders && !r->encoders)) {
 585                 drmFree(r->props);
 586                 drmFree(r->prop_values);
 587                 drmFree(r->modes);
 588                 drmFree(r->encoders);
 589                 drmFree(r);
 590                 r = 0;
 591         }
 592
 593 err_allocs:
 594         drmFree(U642VOID(conn.prop_values_ptr));
 595         drmFree(U642VOID(conn.props_ptr));
 596         if (U642VOID(conn.modes_ptr) != &stack_mode)
 597                 drmFree(U642VOID(conn.modes_ptr));
 598         drmFree(U642VOID(conn.encoders_ptr));
 599
 600         return r;
 601 }
 602
 603 drm_public drmModeConnectorPtr drmModeGetConnector(int fd, uint32_t connector_id)
 604 {
 605         return _drmModeGetConnector(fd, connector_id, 1);
 606 }
 607
 608 drm_public drmModeConnectorPtr drmModeGetConnectorCurrent(int fd, uint32_t connector_id)
 609 {
 610         return _drmModeGetConnector(fd, connector_id, 0);
 611 }
 612
 613 drm_public int drmModeAttachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
 614 {
 615         struct drm_mode_mode_cmd res;
 616
 617         memclear(res);
 618         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
 619         res.connector_id = connector_id;
 620
 621         return DRM_IOCTL(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
 622 }
 623
 624 drm_public int drmModeDetachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
 625 {
 626         struct drm_mode_mode_cmd res;
 627
 628         memclear(res);
 629         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
 630         res.connector_id = connector_id;
 631
 632         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
 633 }
 634
 635 drm_public drmModePropertyPtr drmModeGetProperty(int fd, uint32_t property_id)
 636 {
 637         struct drm_mode_get_property prop;
 638         drmModePropertyPtr r;
 639
 640         memclear(prop);
 641         prop.prop_id = property_id;
 642
 643         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop))
 644                 return 0;
 645
 646         if (prop.count_values)
 647                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_values * sizeof(uint64_t)));
 648
 649         if (prop.count_enum_blobs && (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
 650                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(struct drm_mode_property_enum)));
 651
 652         if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_BLOB)) {
 653                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
 654                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
 655         }
 656
 657         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop)) {
 658                 r = NULL;
 659                 goto err_allocs;
 660         }
 661
 662         if (!(r = drmMalloc(sizeof(*r))))
 663                 goto err_allocs;
 664
 665         r->prop_id = prop.prop_id;
 666         r->count_values = prop.count_values;
 667
 668         r->flags = prop.flags;
 669         if (prop.count_values)
 670                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_values, sizeof(uint64_t));
 671         if (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
 672                 r->count_enums = prop.count_enum_blobs;
 673                 r->enums = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(struct drm_mode_property_enum));
 674         } else if (prop.flags & DRM_MODE_PROP_BLOB) {
 675                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_enum_blobs, sizeof(uint32_t));
 676                 r->blob_ids = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(uint32_t));
 677                 r->count_blobs = prop.count_enum_blobs;
 678         }
 679         strncpy(r->name, prop.name, DRM_PROP_NAME_LEN);
 680         r->name[DRM_PROP_NAME_LEN-1] = 0;
 681
 682 err_allocs:
 683         drmFree(U642VOID(prop.values_ptr));
 684         drmFree(U642VOID(prop.enum_blob_ptr));
 685
 686         return r;
 687 }
 688
 689 drm_public void drmModeFreeProperty(drmModePropertyPtr ptr)
 690 {
 691         if (!ptr)
 692                 return;
 693
 694         drmFree(ptr->values);
 695         drmFree(ptr->enums);
 696         drmFree(ptr->blob_ids);
 697         drmFree(ptr);
 698 }
 699
 700 drm_public drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd,
 701                                                                                                                  uint32_t blob_id)
 702 {
 703         struct drm_mode_get_blob blob;
 704         drmModePropertyBlobPtr r;
 705
 706         memclear(blob);
 707         blob.blob_id = blob_id;
 708
 709         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob))
 710                 return NULL;
 711
 712         if (blob.length)
 713                 blob.data = VOID2U64(drmMalloc(blob.length));
 714
 715         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob)) {
 716                 r = NULL;
 717                 goto err_allocs;
 718         }
 719
 720         if (!(r = drmMalloc(sizeof(*r))))
 721                 goto err_allocs;
 722
 723         r->id = blob.blob_id;
 724         r->length = blob.length;
 725         r->data = drmAllocCpy(U642VOID(blob.data), 1, blob.length);
 726
 727 err_allocs:
 728         drmFree(U642VOID(blob.data));
 729         return r;
 730 }
 731
 732 static inline const uint32_t *
 733 get_formats_ptr(const struct drm_format_modifier_blob *blob)
 734 {
 735         return (const uint32_t *)(((uint8_t *)blob) + blob->formats_offset);
 736 }
 737
 738 static inline const struct drm_format_modifier *
 739 get_modifiers_ptr(const struct drm_format_modifier_blob *blob)
 740 {
 741         return (const struct drm_format_modifier *)(((uint8_t *)blob) +
 742                                                     blob->modifiers_offset);
 743 }
 744
 745 static bool _drmModeFormatModifierGetNext(const drmModePropertyBlobRes *blob,
 746                                           drmModeFormatModifierIterator *iter)
 747 {
 748         const struct drm_format_modifier *blob_modifiers, *mod;
 749         const struct drm_format_modifier_blob *fmt_mod_blob;
 750         const uint32_t *blob_formats;
 751
 752         assert(blob && iter);
 753
 754         fmt_mod_blob = blob->data;
 755         blob_modifiers = get_modifiers_ptr(fmt_mod_blob);
 756         blob_formats = get_formats_ptr(fmt_mod_blob);
 757
 758         /* fmt_idx and mod_idx designate the number of processed formats
 759          * and modifiers.
 760          */
 761         if (iter->fmt_idx >= fmt_mod_blob->count_formats ||
 762             iter->mod_idx >= fmt_mod_blob->count_modifiers)
 763                 return false;
 764
 765         iter->fmt = blob_formats[iter->fmt_idx];
 766         iter->mod = DRM_FORMAT_MOD_INVALID;
 767
 768         /* From the latest valid found, get the next valid modifier */
 769         while (iter->mod_idx < fmt_mod_blob->count_modifiers) {
 770                 mod = &blob_modifiers[iter->mod_idx++];
 771
 772                 /* Check if the format that fmt_idx designates, belongs to
 773                  * this modifier 64-bit window selected via mod->offset.
 774                  */
 775                 if (iter->fmt_idx < mod->offset ||
 776                     iter->fmt_idx >= mod->offset + 64)
 777                         continue;
 778                 if (!(mod->formats & (1 << (iter->fmt_idx - mod->offset))))
 779                         continue;
 780
 781                 iter->mod = mod->modifier;
 782                 break;
 783         }
 784
 785         if (iter->mod_idx == fmt_mod_blob->count_modifiers) {
 786                 iter->mod_idx = 0;
 787                 iter->fmt_idx++;
 788         }
 789
 790         /* Since mod_idx reset, in order for the caller to iterate over
 791          * the last modifier of the last format, always return true here
 792          * and early return from the next call.
 793          */
 794         return true;
 795 }
 796
 797 /**
 798  * Iterate over formats first and then over modifiers. On each call, iter->fmt
 799  * is retained until all associated modifiers are returned. Then, either update
 800  * iter->fmt with the next format, or exit if there aren't any left.
 801  *
 802  * NOTE: clients should not make any assumption on mod_idx and fmt_idx values
 803  *
 804  * @blob: valid kernel blob holding formats and modifiers
 805  * @iter: input and output iterator data. Iter data must be initialised to zero
 806  * @return: false, on error or there aren't any further formats or modifiers left.
 807  *          true, on success and there are more formats or modifiers.
 808  */
 809 drm_public bool drmModeFormatModifierBlobIterNext(const drmModePropertyBlobRes *blob,
 810                                                   drmModeFormatModifierIterator *iter)
 811 {
 812         drmModeFormatModifierIterator tmp;
 813         bool has_fmt;
 814
 815         if (!blob || !iter)
 816                 return false;
 817
 818         tmp.fmt_idx = iter->fmt_idx;
 819         tmp.mod_idx = iter->mod_idx;
 820
 821         /* With the current state of things, DRM/KMS drivers are allowed to
 822          * construct blobs having formats and no modifiers. Userspace can't
 823          * legitimately abort in such cases.
 824          *
 825          * While waiting for the kernel to perhaps disallow formats with no
 826          * modifiers in IN_FORMATS blobs, skip the format altogether.
 827          */
 828         do {
 829                 has_fmt = _drmModeFormatModifierGetNext(blob, &tmp);
 830                 if (has_fmt && tmp.mod != DRM_FORMAT_MOD_INVALID)
 831                         *iter = tmp;
 832
 833         } while (has_fmt && tmp.mod == DRM_FORMAT_MOD_INVALID);
 834
 835         return has_fmt;
 836 }
 837
 838 drm_public void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)
 839 {
 840         if (!ptr)
 841                 return;
 842
 843         drmFree(ptr->data);
 844         drmFree(ptr);
 845 }
 846
 847 drm_public int drmModeConnectorSetProperty(int fd, uint32_t connector_id,
 848                                                                                    uint32_t property_id,
 849                                                                                    uint64_t value)
 850 {
 851         struct drm_mode_connector_set_property osp;
 852
 853         memclear(osp);
 854         osp.connector_id = connector_id;
 855         osp.prop_id = property_id;
 856         osp.value = value;
 857
 858         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPROPERTY, &osp);
 859 }
 860
 861 /*
 862  * checks if a modesetting capable driver has attached to the pci id
 863  * returns 0 if modesetting supported.
 864  *  -EINVAL or invalid bus id
 865  *  -ENOSYS if no modesetting support
 866 */
 867 drm_public int drmCheckModesettingSupported(const char *busid)
 868 {
 869 #if defined (__linux__)
 870         char pci_dev_dir[1024];
 871         int domain, bus, dev, func;
 872         DIR *sysdir;
 873         struct dirent *dent;
 874         int found = 0, ret;
 875
 876         ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev, &func);
 877         if (ret != 4)
 878                 return -EINVAL;
 879
 880         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/drm",
 881                 domain, bus, dev, func);
 882
 883         sysdir = opendir(pci_dev_dir);
 884         if (sysdir) {
 885                 dent = readdir(sysdir);
 886                 while (dent) {
 887                         if (!strncmp(dent->d_name, "controlD", 8)) {
 888                                 found = 1;
 889                                 break;
 890                         }
 891
 892                         dent = readdir(sysdir);
 893                 }
 894                 closedir(sysdir);
 895                 if (found)
 896                         return 0;
 897         }
 898
 899         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/",
 900                 domain, bus, dev, func);
 901
 902         sysdir = opendir(pci_dev_dir);
 903         if (!sysdir)
 904                 return -EINVAL;
 905
 906         dent = readdir(sysdir);
 907         while (dent) {
 908                 if (!strncmp(dent->d_name, "drm:controlD", 12)) {
 909                         found = 1;
 910                         break;
 911                 }
 912
 913                 dent = readdir(sysdir);
 914         }
 915
 916         closedir(sysdir);
 917         if (found)
 918                 return 0;
 919 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
 920         char sbusid[1024];
 921         char oid[128];
 922         int i, modesetting, ret;
 923         size_t len;
 924
 925         /* How many GPUs do we expect in the machine ? */
 926         for (i = 0; i < 10; i++) {
 927                 snprintf(oid, sizeof(oid), "hw.dri.%d.busid", i);
 928                 len = sizeof(sbusid);
 929                 ret = sysctlbyname(oid, sbusid, &len, NULL, 0);
 930                 if (ret == -1) {
 931                         if (errno == ENOENT)
 932                                 continue;
 933                         return -EINVAL;
 934                 }
 935                 if (strcmp(sbusid, busid) != 0)
 936                         continue;
 937                 snprintf(oid, sizeof(oid), "hw.dri.%d.modesetting", i);
 938                 len = sizeof(modesetting);
 939                 ret = sysctlbyname(oid, &modesetting, &len, NULL, 0);
 940                 if (ret == -1 || len != sizeof(modesetting))
 941                         return -EINVAL;
 942                 return (modesetting ? 0 : -ENOSYS);
 943         }
 944 #elif defined(__DragonFly__)
 945         return 0;
 946 #elif defined(__OpenBSD__)
 947         int     fd;
 948         struct drm_mode_card_res res;
 949         drmModeResPtr r = 0;
 950
 951         if ((fd = drmOpen(NULL, busid)) < 0)
 952                 return -EINVAL;
 953
 954         memset(&res, 0, sizeof(struct drm_mode_card_res));
 955
 956         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res)) {
 957                 drmClose(fd);
 958                 return -errno;
 959         }
 960
 961         drmClose(fd);
 962         return 0;
 963 #endif
 964         return -ENOSYS;
 965 }
 966
 967 drm_public int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
 968                                                                    uint16_t *red, uint16_t *green,
 969                                                                    uint16_t *blue)
 970 {
 971         struct drm_mode_crtc_lut l;
 972
 973         memclear(l);
 974         l.crtc_id = crtc_id;
 975         l.gamma_size = size;
 976         l.red = VOID2U64(red);
 977         l.green = VOID2U64(green);
 978         l.blue = VOID2U64(blue);
 979
 980         return DRM_IOCTL(fd, DRM_IOCTL_MODE_GETGAMMA, &l);
 981 }
 982
 983 drm_public int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
 984                                                                    uint16_t *red, uint16_t *green,
 985                                                                    uint16_t *blue)
 986 {
 987         struct drm_mode_crtc_lut l;
 988
 989         memclear(l);
 990         l.crtc_id = crtc_id;
 991         l.gamma_size = size;
 992         l.red = VOID2U64(red);
 993         l.green = VOID2U64(green);
 994         l.blue = VOID2U64(blue);
 995
 996         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETGAMMA, &l);
 997 }
 998
 999 drm_public int drmHandleEvent(int fd, drmEventContextPtr evctx)
1000 {
1001         char buffer[1024];
1002         int len, i;
1003         struct drm_event *e;
1004         struct drm_event_vblank *vblank;
1005         struct drm_event_crtc_sequence *seq;
1006         void *user_data;
1007
1008         /* The DRM read semantics guarantees that we always get only
1009          * complete events. */
1010
1011         len = read(fd, buffer, sizeof buffer);
1012         if (len == 0)
1013                 return 0;
1014         if (len < (int)sizeof *e)
1015                 return -1;
1016
1017         i = 0;
1018         while (i < len) {
1019                 e = (struct drm_event *)(buffer + i);
1020                 switch (e->type) {
1021                 case DRM_EVENT_VBLANK:
1022                         if (evctx->version < 1 ||
1023                             evctx->vblank_handler == NULL)
1024                                 break;
1025                         vblank = (struct drm_event_vblank *) e;
1026                         evctx->vblank_handler(fd,
1027                                               vblank->sequence,
1028                                               vblank->tv_sec,
1029                                               vblank->tv_usec,
1030                                               U642VOID (vblank->user_data));
1031                         break;
1032                 case DRM_EVENT_FLIP_COMPLETE:
1033                         vblank = (struct drm_event_vblank *) e;
1034                         user_data = U642VOID (vblank->user_data);
1035
1036                         if (evctx->version >= 3 && evctx->page_flip_handler2)
1037                                 evctx->page_flip_handler2(fd,
1038                                                          vblank->sequence,
1039                                                          vblank->tv_sec,
1040                                                          vblank->tv_usec,
1041                                                          vblank->crtc_id,
1042                                                          user_data);
1043                         else if (evctx->version >= 2 && evctx->page_flip_handler)
1044                                 evctx->page_flip_handler(fd,
1045                                                          vblank->sequence,
1046                                                          vblank->tv_sec,
1047                                                          vblank->tv_usec,
1048                                                          user_data);
1049                         break;
1050                 case DRM_EVENT_CRTC_SEQUENCE:
1051                         seq = (struct drm_event_crtc_sequence *) e;
1052                         if (evctx->version >= 4 && evctx->sequence_handler)
1053                                 evctx->sequence_handler(fd,
1054                                                         seq->sequence,
1055                                                         seq->time_ns,
1056                                                         seq->user_data);
1057                         break;
1058                 default:
1059                         break;
1060                 }
1061                 i += e->length;
1062         }
1063
1064         return 0;
1065 }
1066
1067 drm_public int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
1068                     uint32_t flags, void *user_data)
1069 {
1070         struct drm_mode_crtc_page_flip flip;
1071
1072         memclear(flip);
1073         flip.fb_id = fb_id;
1074         flip.crtc_id = crtc_id;
1075         flip.user_data = VOID2U64(user_data);
1076         flip.flags = flags;
1077
1078         return DRM_IOCTL(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);
1079 }
1080
1081 drm_public int drmModePageFlipTarget(int fd, uint32_t crtc_id, uint32_t fb_id,
1082                           uint32_t flags, void *user_data,
1083                           uint32_t target_vblank)
1084 {
1085         struct drm_mode_crtc_page_flip_target flip_target;
1086
1087         memclear(flip_target);
1088         flip_target.fb_id = fb_id;
1089         flip_target.crtc_id = crtc_id;
1090         flip_target.user_data = VOID2U64(user_data);
1091         flip_target.flags = flags;
1092         flip_target.sequence = target_vblank;
1093
1094         return DRM_IOCTL(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip_target);
1095 }
1096
1097 drm_public int drmModeSetPlane(int fd, uint32_t plane_id, uint32_t crtc_id,
1098                     uint32_t fb_id, uint32_t flags,
1099                     int32_t crtc_x, int32_t crtc_y,
1100                     uint32_t crtc_w, uint32_t crtc_h,
1101                     uint32_t src_x, uint32_t src_y,
1102                     uint32_t src_w, uint32_t src_h)
1103 {
1104         struct drm_mode_set_plane s;
1105
1106         memclear(s);
1107         s.plane_id = plane_id;
1108         s.crtc_id = crtc_id;
1109         s.fb_id = fb_id;
1110         s.flags = flags;
1111         s.crtc_x = crtc_x;
1112         s.crtc_y = crtc_y;
1113         s.crtc_w = crtc_w;
1114         s.crtc_h = crtc_h;
1115         s.src_x = src_x;
1116         s.src_y = src_y;
1117         s.src_w = src_w;
1118         s.src_h = src_h;
1119
1120         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPLANE, &s);
1121 }
1122
1123 drm_public drmModePlanePtr drmModeGetPlane(int fd, uint32_t plane_id)
1124 {
1125         struct drm_mode_get_plane ovr, counts;
1126         drmModePlanePtr r = 0;
1127
1128 retry:
1129         memclear(ovr);
1130         ovr.plane_id = plane_id;
1131         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
1132                 return 0;
1133
1134         counts = ovr;
1135
1136         if (ovr.count_format_types) {
1137                 ovr.format_type_ptr = VOID2U64(drmMalloc(ovr.count_format_types *
1138                                                          sizeof(uint32_t)));
1139                 if (!ovr.format_type_ptr)
1140                         goto err_allocs;
1141         }
1142
1143         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
1144                 goto err_allocs;
1145
1146         if (counts.count_format_types < ovr.count_format_types) {
1147                 drmFree(U642VOID(ovr.format_type_ptr));
1148                 goto retry;
1149         }
1150
1151         if (!(r = drmMalloc(sizeof(*r))))
1152                 goto err_allocs;
1153
1154         r->count_formats = ovr.count_format_types;
1155         r->plane_id = ovr.plane_id;
1156         r->crtc_id = ovr.crtc_id;
1157         r->fb_id = ovr.fb_id;
1158         r->possible_crtcs = ovr.possible_crtcs;
1159         r->gamma_size = ovr.gamma_size;
1160         r->formats = drmAllocCpy(U642VOID(ovr.format_type_ptr),
1161                                  ovr.count_format_types, sizeof(uint32_t));
1162         if (ovr.count_format_types && !r->formats) {
1163                 drmFree(r->formats);
1164                 drmFree(r);
1165                 r = 0;
1166         }
1167
1168 err_allocs:
1169         drmFree(U642VOID(ovr.format_type_ptr));
1170
1171         return r;
1172 }
1173
1174 drm_public void drmModeFreePlane(drmModePlanePtr ptr)
1175 {
1176         if (!ptr)
1177                 return;
1178
1179         drmFree(ptr->formats);
1180         drmFree(ptr);
1181 }
1182
1183 drm_public drmModePlaneResPtr drmModeGetPlaneResources(int fd)
1184 {
1185         struct drm_mode_get_plane_res res, counts;
1186         drmModePlaneResPtr r = 0;
1187
1188 retry:
1189         memclear(res);
1190         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1191                 return 0;
1192
1193         counts = res;
1194
1195         if (res.count_planes) {
1196                 res.plane_id_ptr = VOID2U64(drmMalloc(res.count_planes *
1197                                                         sizeof(uint32_t)));
1198                 if (!res.plane_id_ptr)
1199                         goto err_allocs;
1200         }
1201
1202         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1203                 goto err_allocs;
1204
1205         if (counts.count_planes < res.count_planes) {
1206                 drmFree(U642VOID(res.plane_id_ptr));
1207                 goto retry;
1208         }
1209
1210         if (!(r = drmMalloc(sizeof(*r))))
1211                 goto err_allocs;
1212
1213         r->count_planes = res.count_planes;
1214         r->planes = drmAllocCpy(U642VOID(res.plane_id_ptr),
1215                                   res.count_planes, sizeof(uint32_t));
1216         if (res.count_planes && !r->planes) {
1217                 drmFree(r->planes);
1218                 drmFree(r);
1219                 r = 0;
1220         }
1221
1222 err_allocs:
1223         drmFree(U642VOID(res.plane_id_ptr));
1224
1225         return r;
1226 }
1227
1228 drm_public void drmModeFreePlaneResources(drmModePlaneResPtr ptr)
1229 {
1230         if (!ptr)
1231                 return;
1232
1233         drmFree(ptr->planes);
1234         drmFree(ptr);
1235 }
1236
1237 drm_public drmModeObjectPropertiesPtr drmModeObjectGetProperties(int fd,
1238                                                       uint32_t object_id,
1239                                                       uint32_t object_type)
1240 {
1241         struct drm_mode_obj_get_properties properties;
1242         drmModeObjectPropertiesPtr ret = NULL;
1243         uint32_t count;
1244
1245 retry:
1246         memclear(properties);
1247         properties.obj_id = object_id;
1248         properties.obj_type = object_type;
1249
1250         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1251                 return 0;
1252
1253         count = properties.count_props;
1254
1255         if (count) {
1256                 properties.props_ptr = VOID2U64(drmMalloc(count *
1257                                                           sizeof(uint32_t)));
1258                 if (!properties.props_ptr)
1259                         goto err_allocs;
1260                 properties.prop_values_ptr = VOID2U64(drmMalloc(count *
1261                                                       sizeof(uint64_t)));
1262                 if (!properties.prop_values_ptr)
1263                         goto err_allocs;
1264         }
1265
1266         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1267                 goto err_allocs;
1268
1269         if (count < properties.count_props) {
1270                 drmFree(U642VOID(properties.props_ptr));
1271                 drmFree(U642VOID(properties.prop_values_ptr));
1272                 goto retry;
1273         }
1274         count = properties.count_props;
1275
1276         ret = drmMalloc(sizeof(*ret));
1277         if (!ret)
1278                 goto err_allocs;
1279
1280         ret->count_props = count;
1281         ret->props = drmAllocCpy(U642VOID(properties.props_ptr),
1282                                  count, sizeof(uint32_t));
1283         ret->prop_values = drmAllocCpy(U642VOID(properties.prop_values_ptr),
1284                                        count, sizeof(uint64_t));
1285         if (ret->count_props && (!ret->props || !ret->prop_values)) {
1286                 drmFree(ret->props);
1287                 drmFree(ret->prop_values);
1288                 drmFree(ret);
1289                 ret = NULL;
1290         }
1291
1292 err_allocs:
1293         drmFree(U642VOID(properties.props_ptr));
1294         drmFree(U642VOID(properties.prop_values_ptr));
1295         return ret;
1296 }
1297
1298 drm_public void drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr)
1299 {
1300         if (!ptr)
1301                 return;
1302         drmFree(ptr->props);
1303         drmFree(ptr->prop_values);
1304         drmFree(ptr);
1305 }
1306
1307 drm_public int drmModeObjectSetProperty(int fd, uint32_t object_id, uint32_t object_type,
1308                              uint32_t property_id, uint64_t value)
1309 {
1310         struct drm_mode_obj_set_property prop;
1311
1312         memclear(prop);
1313         prop.value = value;
1314         prop.prop_id = property_id;
1315         prop.obj_id = object_id;
1316         prop.obj_type = object_type;
1317
1318         return DRM_IOCTL(fd, DRM_IOCTL_MODE_OBJ_SETPROPERTY, &prop);
1319 }
1320
1321 typedef struct _drmModeAtomicReqItem drmModeAtomicReqItem, *drmModeAtomicReqItemPtr;
1322
1323 struct _drmModeAtomicReqItem {
1324         uint32_t object_id;
1325         uint32_t property_id;
1326         uint64_t value;
1327         uint32_t cursor;
1328 };
1329
1330 struct _drmModeAtomicReq {
1331         uint32_t cursor;
1332         uint32_t size_items;
1333         drmModeAtomicReqItemPtr items;
1334 };
1335
1336 drm_public drmModeAtomicReqPtr drmModeAtomicAlloc(void)
1337 {
1338         drmModeAtomicReqPtr req;
1339
1340         req = drmMalloc(sizeof *req);
1341         if (!req)
1342                 return NULL;
1343
1344         req->items = NULL;
1345         req->cursor = 0;
1346         req->size_items = 0;
1347
1348         return req;
1349 }
1350
1351 drm_public drmModeAtomicReqPtr drmModeAtomicDuplicate(drmModeAtomicReqPtr old)
1352 {
1353         drmModeAtomicReqPtr new;
1354
1355         if (!old)
1356                 return NULL;
1357
1358         new = drmMalloc(sizeof *new);
1359         if (!new)
1360                 return NULL;
1361
1362         new->cursor = old->cursor;
1363         new->size_items = old->size_items;
1364
1365         if (old->size_items) {
1366                 new->items = drmMalloc(old->size_items * sizeof(*new->items));
1367                 if (!new->items) {
1368                         free(new);
1369                         return NULL;
1370                 }
1371                 memcpy(new->items, old->items,
1372                        old->cursor * sizeof(*new->items));
1373         } else {
1374                 new->items = NULL;
1375         }
1376
1377         return new;
1378 }
1379
1380 drm_public int drmModeAtomicMerge(drmModeAtomicReqPtr base,
1381                                   drmModeAtomicReqPtr augment)
1382 {
1383         uint32_t i;
1384
1385         if (!base)
1386                 return -EINVAL;
1387
1388         if (!augment || augment->cursor == 0)
1389                 return 0;
1390
1391         if (base->cursor + augment->cursor >= base->size_items) {
1392                 drmModeAtomicReqItemPtr new;
1393                 int saved_size = base->size_items;
1394
1395                 base->size_items = base->cursor + augment->cursor;
1396                 new = realloc(base->items,
1397                               base->size_items * sizeof(*base->items));
1398                 if (!new) {
1399                         base->size_items = saved_size;
1400                         return -ENOMEM;
1401                 }
1402                 base->items = new;
1403         }
1404
1405         memcpy(&base->items[base->cursor], augment->items,
1406                augment->cursor * sizeof(*augment->items));
1407         for (i = base->cursor; i < base->cursor + augment->cursor; i++)
1408                 base->items[i].cursor = i;
1409         base->cursor += augment->cursor;
1410
1411         return 0;
1412 }
1413
1414 drm_public int drmModeAtomicGetCursor(drmModeAtomicReqPtr req)
1415 {
1416         if (!req)
1417                 return -EINVAL;
1418         return req->cursor;
1419 }
1420
1421 drm_public void drmModeAtomicSetCursor(drmModeAtomicReqPtr req, int cursor)
1422 {
1423         if (req)
1424                 req->cursor = cursor;
1425 }
1426
1427 drm_public int drmModeAtomicAddProperty(drmModeAtomicReqPtr req,
1428                                         uint32_t object_id,
1429                                         uint32_t property_id,
1430                                         uint64_t value)
1431 {
1432         if (!req)
1433                 return -EINVAL;
1434
1435         if (object_id == 0 || property_id == 0)
1436                 return -EINVAL;
1437
1438         if (req->cursor >= req->size_items) {
1439                 const uint32_t item_size_inc = getpagesize() / sizeof(*req->items);
1440                 drmModeAtomicReqItemPtr new;
1441
1442                 req->size_items += item_size_inc;
1443                 new = realloc(req->items, req->size_items * sizeof(*req->items));
1444                 if (!new) {
1445                         req->size_items -= item_size_inc;
1446                         return -ENOMEM;
1447                 }
1448                 req->items = new;
1449         }
1450
1451         req->items[req->cursor].object_id = object_id;
1452         req->items[req->cursor].property_id = property_id;
1453         req->items[req->cursor].value = value;
1454         req->items[req->cursor].cursor = req->cursor;
1455         req->cursor++;
1456
1457         return req->cursor;
1458 }
1459
1460 drm_public void drmModeAtomicFree(drmModeAtomicReqPtr req)
1461 {
1462         if (!req)
1463                 return;
1464
1465         if (req->items)
1466                 drmFree(req->items);
1467         drmFree(req);
1468 }
1469
1470 static int sort_req_list(const void *misc, const void *other)
1471 {
1472         const drmModeAtomicReqItem *first = misc;
1473         const drmModeAtomicReqItem *second = other;
1474
1475         if (first->object_id != second->object_id)
1476                 return first->object_id - second->object_id;
1477         else if (first->property_id != second->property_id)
1478                 return first->property_id - second->property_id;
1479         else
1480                 return first->cursor - second->cursor;
1481 }
1482
1483 drm_public int drmModeAtomicCommit(int fd, drmModeAtomicReqPtr req,
1484                                    uint32_t flags, void *user_data)
1485 {
1486         drmModeAtomicReqPtr sorted;
1487         struct drm_mode_atomic atomic;
1488         uint32_t *objs_ptr = NULL;
1489         uint32_t *count_props_ptr = NULL;
1490         uint32_t *props_ptr = NULL;
1491         uint64_t *prop_values_ptr = NULL;
1492         uint32_t last_obj_id = 0;
1493         uint32_t i;
1494         int obj_idx = -1;
1495         int ret = -1;
1496
1497         if (!req)
1498                 return -EINVAL;
1499
1500         if (req->cursor == 0)
1501                 return 0;
1502
1503         sorted = drmModeAtomicDuplicate(req);
1504         if (sorted == NULL)
1505                 return -ENOMEM;
1506
1507         memclear(atomic);
1508
1509         /* Sort the list by object ID, then by property ID. */
1510         qsort(sorted->items, sorted->cursor, sizeof(*sorted->items),
1511               sort_req_list);
1512
1513         /* Now the list is sorted, eliminate duplicate property sets. */
1514         for (i = 0; i < sorted->cursor; i++) {
1515                 if (sorted->items[i].object_id != last_obj_id) {
1516                         atomic.count_objs++;
1517                         last_obj_id = sorted->items[i].object_id;
1518                 }
1519
1520                 if (i == sorted->cursor - 1)
1521                         continue;
1522
1523                 if (sorted->items[i].object_id != sorted->items[i + 1].object_id ||
1524                     sorted->items[i].property_id != sorted->items[i + 1].property_id)
1525                         continue;
1526
1527                 memmove(&sorted->items[i], &sorted->items[i + 1],
1528                         (sorted->cursor - i - 1) * sizeof(*sorted->items));
1529                 sorted->cursor--;
1530         }
1531
1532         for (i = 0; i < sorted->cursor; i++)
1533                 sorted->items[i].cursor = i;
1534
1535         objs_ptr = drmMalloc(atomic.count_objs * sizeof objs_ptr[0]);
1536         if (!objs_ptr) {
1537                 errno = ENOMEM;
1538                 goto out;
1539         }
1540
1541         count_props_ptr = drmMalloc(atomic.count_objs * sizeof count_props_ptr[0]);
1542         if (!count_props_ptr) {
1543                 errno = ENOMEM;
1544                 goto out;
1545         }
1546
1547         props_ptr = drmMalloc(sorted->cursor * sizeof props_ptr[0]);
1548         if (!props_ptr) {
1549                 errno = ENOMEM;
1550                 goto out;
1551         }
1552
1553         prop_values_ptr = drmMalloc(sorted->cursor * sizeof prop_values_ptr[0]);
1554         if (!prop_values_ptr) {
1555                 errno = ENOMEM;
1556                 goto out;
1557         }
1558
1559         for (i = 0, last_obj_id = 0; i < sorted->cursor; i++) {
1560                 if (sorted->items[i].object_id != last_obj_id) {
1561                         obj_idx++;
1562                         objs_ptr[obj_idx] = sorted->items[i].object_id;
1563                         last_obj_id = objs_ptr[obj_idx];
1564                 }
1565
1566                 count_props_ptr[obj_idx]++;
1567                 props_ptr[i] = sorted->items[i].property_id;
1568                 prop_values_ptr[i] = sorted->items[i].value;
1569
1570         }
1571
1572         atomic.flags = flags;
1573         atomic.objs_ptr = VOID2U64(objs_ptr);
1574         atomic.count_props_ptr = VOID2U64(count_props_ptr);
1575         atomic.props_ptr = VOID2U64(props_ptr);
1576         atomic.prop_values_ptr = VOID2U64(prop_values_ptr);
1577         atomic.user_data = VOID2U64(user_data);
1578
1579         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ATOMIC, &atomic);
1580
1581 out:
1582         drmFree(objs_ptr);
1583         drmFree(count_props_ptr);
1584         drmFree(props_ptr);
1585         drmFree(prop_values_ptr);
1586         drmModeAtomicFree(sorted);
1587
1588         return ret;
1589 }
1590
1591 drm_public int
1592 drmModeCreatePropertyBlob(int fd, const void *data, size_t length,
1593                                      uint32_t *id)
1594 {
1595         struct drm_mode_create_blob create;
1596         int ret;
1597
1598         if (length >= 0xffffffff)
1599                 return -ERANGE;
1600
1601         memclear(create);
1602
1603         create.length = length;
1604         create.data = (uintptr_t) data;
1605         create.blob_id = 0;
1606         *id = 0;
1607
1608         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATEPROPBLOB, &create);
1609         if (ret != 0)
1610                 return ret;
1611
1612         *id = create.blob_id;
1613         return 0;
1614 }
1615
1616 drm_public int
1617 drmModeDestroyPropertyBlob(int fd, uint32_t id)
1618 {
1619         struct drm_mode_destroy_blob destroy;
1620
1621         memclear(destroy);
1622         destroy.blob_id = id;
1623         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DESTROYPROPBLOB, &destroy);
1624 }
1625
1626 drm_public int
1627 drmModeCreateLease(int fd, const uint32_t *objects, int num_objects, int flags,
1628                    uint32_t *lessee_id)
1629 {
1630         struct drm_mode_create_lease create;
1631         int ret;
1632
1633         memclear(create);
1634         create.object_ids = (uintptr_t) objects;
1635         create.object_count = num_objects;
1636         create.flags = flags;
1637
1638         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATE_LEASE, &create);
1639         if (ret == 0) {
1640                 *lessee_id = create.lessee_id;
1641                 return create.fd;
1642         }
1643         return -errno;
1644 }
1645
1646 drm_public drmModeLesseeListPtr
1647 drmModeListLessees(int fd)
1648 {
1649         struct drm_mode_list_lessees list;
1650         uint32_t count;
1651         drmModeLesseeListPtr ret;
1652
1653         memclear(list);
1654
1655         if (DRM_IOCTL(fd, DRM_IOCTL_MODE_LIST_LESSEES, &list))
1656                 return NULL;
1657
1658         count = list.count_lessees;
1659         ret = drmMalloc(sizeof (drmModeLesseeListRes) + count * sizeof (ret->lessees[0]));
1660         if (!ret)
1661                 return NULL;
1662
1663         list.lessees_ptr = VOID2U64(&ret->lessees[0]);
1664         if (DRM_IOCTL(fd, DRM_IOCTL_MODE_LIST_LESSEES, &list)) {
1665                 drmFree(ret);
1666                 return NULL;
1667         }
1668
1669         ret->count = count;
1670         return ret;
1671 }
1672
1673 drm_public drmModeObjectListPtr
1674 drmModeGetLease(int fd)
1675 {
1676         struct drm_mode_get_lease get;
1677         uint32_t count;
1678         drmModeObjectListPtr ret;
1679
1680         memclear(get);
1681
1682         if (DRM_IOCTL(fd, DRM_IOCTL_MODE_GET_LEASE, &get))
1683                 return NULL;
1684
1685         count = get.count_objects;
1686         ret = drmMalloc(sizeof (drmModeObjectListRes) + count * sizeof (ret->objects[0]));
1687         if (!ret)
1688                 return NULL;
1689
1690         get.objects_ptr = VOID2U64(&ret->objects[0]);
1691         if (DRM_IOCTL(fd, DRM_IOCTL_MODE_GET_LEASE, &get)) {
1692                 drmFree(ret);
1693                 return NULL;
1694         }
1695
1696         ret->count = count;
1697         return ret;
1698 }
1699
1700 drm_public int
1701 drmModeRevokeLease(int fd, uint32_t lessee_id)
1702 {
1703         struct drm_mode_revoke_lease revoke;
1704         int ret;
1705
1706         memclear(revoke);
1707
1708         revoke.lessee_id = lessee_id;
1709
1710         ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_REVOKE_LEASE, &revoke);
1711         if (ret == 0)
1712                 return 0;
1713         return -errno;
1714 }
1715
1716 drm_public drmModeFB2Ptr
1717 drmModeGetFB2(int fd, uint32_t fb_id)
1718 {
1719         struct drm_mode_fb_cmd2 get = {
1720                 .fb_id = fb_id,
1721         };
1722         drmModeFB2Ptr ret;
1723         int err;
1724
1725         err = DRM_IOCTL(fd, DRM_IOCTL_MODE_GETFB2, &get);
1726         if (err != 0)
1727                 return NULL;
1728
1729         ret = drmMalloc(sizeof(drmModeFB2));
1730         if (!ret)
1731                 return NULL;
1732
1733         ret->fb_id = fb_id;
1734         ret->width = get.width;
1735         ret->height = get.height;
1736         ret->pixel_format = get.pixel_format;
1737         ret->flags = get.flags;
1738         ret->modifier = get.modifier[0];
1739         memcpy(ret->handles, get.handles, sizeof(uint32_t) * 4);
1740         memcpy(ret->pitches, get.pitches, sizeof(uint32_t) * 4);
1741         memcpy(ret->offsets, get.offsets, sizeof(uint32_t) * 4);
1742
1743         return ret;
1744 }
1745
1746 drm_public void drmModeFreeFB2(drmModeFB2Ptr ptr)
1747 {
1748         drmFree(ptr);
1749 }