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