xf86drmMode.c

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