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->width = crtc.mode.hdisplay;
 357                 r->height = crtc.mode.vdisplay;
 358         }
 359         r->buffer_id       = crtc.fb_id;
 360         r->gamma_size      = crtc.gamma_size;
 361         return r;
 362 }
 363
 364
 365 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
 366                    uint32_t x, uint32_t y, uint32_t *connectors, int count,
 367                    drmModeModeInfoPtr mode)
 368 {
 369         struct drm_mode_crtc crtc;
 370
 371         crtc.x             = x;
 372         crtc.y             = y;
 373         crtc.crtc_id       = crtcId;
 374         crtc.fb_id         = bufferId;
 375         crtc.set_connectors_ptr = VOID2U64(connectors);
 376         crtc.count_connectors = count;
 377         if (mode) {
 378           memcpy(&crtc.mode, mode, sizeof(struct drm_mode_modeinfo));
 379           crtc.mode_valid = 1;
 380         } else
 381           crtc.mode_valid = 0;
 382
 383         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
 384 }
 385
 386 /*
 387  * Cursor manipulation
 388  */
 389
 390 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height)
 391 {
 392         struct drm_mode_cursor arg;
 393
 394         arg.flags = DRM_MODE_CURSOR_BO;
 395         arg.crtc_id = crtcId;
 396         arg.width = width;
 397         arg.height = height;
 398         arg.handle = bo_handle;
 399
 400         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
 401 }
 402
 403 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y)
 404 {
 405         struct drm_mode_cursor arg;
 406
 407         arg.flags = DRM_MODE_CURSOR_MOVE;
 408         arg.crtc_id = crtcId;
 409         arg.x = x;
 410         arg.y = y;
 411
 412         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
 413 }
 414
 415 /*
 416  * Encoder get
 417  */
 418 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id)
 419 {
 420         struct drm_mode_get_encoder enc;
 421         drmModeEncoderPtr r = NULL;
 422
 423         enc.encoder_id = encoder_id;
 424         enc.encoder_type = 0;
 425         enc.possible_crtcs = 0;
 426         enc.possible_clones = 0;
 427
 428         if (drmIoctl(fd, DRM_IOCTL_MODE_GETENCODER, &enc))
 429                 return 0;
 430
 431         if (!(r = drmMalloc(sizeof(*r))))
 432                 return 0;
 433
 434         r->encoder_id = enc.encoder_id;
 435         r->crtc_id = enc.crtc_id;
 436         r->encoder_type = enc.encoder_type;
 437         r->possible_crtcs = enc.possible_crtcs;
 438         r->possible_clones = enc.possible_clones;
 439
 440         return r;
 441 }
 442
 443 /*
 444  * Connector manipulation
 445  */
 446
 447 drmModeConnectorPtr drmModeGetConnector(int fd, uint32_t connector_id)
 448 {
 449         struct drm_mode_get_connector conn, counts;
 450         drmModeConnectorPtr r = NULL;
 451
 452 retry:
 453         memset(&conn, 0, sizeof(struct drm_mode_get_connector));
 454         conn.connector_id = connector_id;
 455
 456         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
 457                 return 0;
 458
 459         counts = conn;
 460
 461         if (conn.count_props) {
 462                 conn.props_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint32_t)));
 463                 if (!conn.props_ptr)
 464                         goto err_allocs;
 465                 conn.prop_values_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint64_t)));
 466                 if (!conn.prop_values_ptr)
 467                         goto err_allocs;
 468         }
 469
 470         if (conn.count_modes) {
 471                 conn.modes_ptr = VOID2U64(drmMalloc(conn.count_modes*sizeof(struct drm_mode_modeinfo)));
 472                 if (!conn.modes_ptr)
 473                         goto err_allocs;
 474         }
 475
 476         if (conn.count_encoders) {
 477                 conn.encoders_ptr = VOID2U64(drmMalloc(conn.count_encoders*sizeof(uint32_t)));
 478                 if (!conn.encoders_ptr)
 479                         goto err_allocs;
 480         }
 481
 482         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
 483                 goto err_allocs;
 484
 485         /* The number of available connectors and etc may have changed with a
 486          * hotplug event in between the ioctls, in which case the field is
 487          * silently ignored by the kernel.
 488          */
 489         if (counts.count_props < conn.count_props ||
 490             counts.count_modes < conn.count_modes ||
 491             counts.count_encoders < conn.count_encoders) {
 492                 drmFree(U642VOID(conn.props_ptr));
 493                 drmFree(U642VOID(conn.prop_values_ptr));
 494                 drmFree(U642VOID(conn.modes_ptr));
 495                 drmFree(U642VOID(conn.encoders_ptr));
 496
 497                 goto retry;
 498         }
 499
 500         if(!(r = drmMalloc(sizeof(*r)))) {
 501                 goto err_allocs;
 502         }
 503
 504         r->connector_id = conn.connector_id;
 505         r->encoder_id = conn.encoder_id;
 506         r->connection   = conn.connection;
 507         r->mmWidth      = conn.mm_width;
 508         r->mmHeight     = conn.mm_height;
 509         /* convert subpixel from kernel to userspace */
 510         r->subpixel     = conn.subpixel + 1;
 511         r->count_modes  = conn.count_modes;
 512         r->count_props  = conn.count_props;
 513         r->props        = drmAllocCpy(U642VOID(conn.props_ptr), conn.count_props, sizeof(uint32_t));
 514         r->prop_values  = drmAllocCpy(U642VOID(conn.prop_values_ptr), conn.count_props, sizeof(uint64_t));
 515         r->modes        = drmAllocCpy(U642VOID(conn.modes_ptr), conn.count_modes, sizeof(struct drm_mode_modeinfo));
 516         r->count_encoders = conn.count_encoders;
 517         r->encoders     = drmAllocCpy(U642VOID(conn.encoders_ptr), conn.count_encoders, sizeof(uint32_t));
 518         r->connector_type  = conn.connector_type;
 519         r->connector_type_id = conn.connector_type_id;
 520
 521         if ((r->count_props && !r->props) ||
 522             (r->count_props && !r->prop_values) ||
 523             (r->count_modes && !r->modes) ||
 524             (r->count_encoders && !r->encoders)) {
 525                 drmFree(r->props);
 526                 drmFree(r->prop_values);
 527                 drmFree(r->modes);
 528                 drmFree(r->encoders);
 529                 drmFree(r);
 530                 r = 0;
 531         }
 532
 533 err_allocs:
 534         drmFree(U642VOID(conn.prop_values_ptr));
 535         drmFree(U642VOID(conn.props_ptr));
 536         drmFree(U642VOID(conn.modes_ptr));
 537         drmFree(U642VOID(conn.encoders_ptr));
 538
 539         return r;
 540 }
 541
 542 int drmModeAttachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
 543 {
 544         struct drm_mode_mode_cmd res;
 545
 546         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
 547         res.connector_id = connector_id;
 548
 549         return DRM_IOCTL(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
 550 }
 551
 552 int drmModeDetachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
 553 {
 554         struct drm_mode_mode_cmd res;
 555
 556         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
 557         res.connector_id = connector_id;
 558
 559         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
 560 }
 561
 562
 563 drmModePropertyPtr drmModeGetProperty(int fd, uint32_t property_id)
 564 {
 565         struct drm_mode_get_property prop;
 566         drmModePropertyPtr r;
 567
 568         prop.prop_id = property_id;
 569         prop.count_enum_blobs = 0;
 570         prop.count_values = 0;
 571         prop.flags = 0;
 572         prop.enum_blob_ptr = 0;
 573         prop.values_ptr = 0;
 574
 575         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop))
 576                 return 0;
 577
 578         if (prop.count_values)
 579                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_values * sizeof(uint64_t)));
 580
 581         if (prop.count_enum_blobs && (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
 582                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(struct drm_mode_property_enum)));
 583
 584         if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_BLOB)) {
 585                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
 586                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
 587         }
 588
 589         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop)) {
 590                 r = NULL;
 591                 goto err_allocs;
 592         }
 593
 594         if (!(r = drmMalloc(sizeof(*r))))
 595                 return NULL;
 596
 597         r->prop_id = prop.prop_id;
 598         r->count_values = prop.count_values;
 599
 600         r->flags = prop.flags;
 601         if (prop.count_values)
 602                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_values, sizeof(uint64_t));
 603         if (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
 604                 r->count_enums = prop.count_enum_blobs;
 605                 r->enums = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(struct drm_mode_property_enum));
 606         } else if (prop.flags & DRM_MODE_PROP_BLOB) {
 607                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_enum_blobs, sizeof(uint32_t));
 608                 r->blob_ids = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(uint32_t));
 609                 r->count_blobs = prop.count_enum_blobs;
 610         }
 611         strncpy(r->name, prop.name, DRM_PROP_NAME_LEN);
 612         r->name[DRM_PROP_NAME_LEN-1] = 0;
 613
 614 err_allocs:
 615         drmFree(U642VOID(prop.values_ptr));
 616         drmFree(U642VOID(prop.enum_blob_ptr));
 617
 618         return r;
 619 }
 620
 621 void drmModeFreeProperty(drmModePropertyPtr ptr)
 622 {
 623         if (!ptr)
 624                 return;
 625
 626         drmFree(ptr->values);
 627         drmFree(ptr->enums);
 628         drmFree(ptr);
 629 }
 630
 631 drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id)
 632 {
 633         struct drm_mode_get_blob blob;
 634         drmModePropertyBlobPtr r;
 635
 636         blob.length = 0;
 637         blob.data = 0;
 638         blob.blob_id = blob_id;
 639
 640         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob))
 641                 return NULL;
 642
 643         if (blob.length)
 644                 blob.data = VOID2U64(drmMalloc(blob.length));
 645
 646         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob)) {
 647                 r = NULL;
 648                 goto err_allocs;
 649         }
 650
 651         if (!(r = drmMalloc(sizeof(*r))))
 652                 goto err_allocs;
 653
 654         r->id = blob.blob_id;
 655         r->length = blob.length;
 656         r->data = drmAllocCpy(U642VOID(blob.data), 1, blob.length);
 657
 658 err_allocs:
 659         drmFree(U642VOID(blob.data));
 660         return r;
 661 }
 662
 663 void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)
 664 {
 665         if (!ptr)
 666                 return;
 667
 668         drmFree(ptr->data);
 669         drmFree(ptr);
 670 }
 671
 672 int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
 673                              uint64_t value)
 674 {
 675         struct drm_mode_connector_set_property osp;
 676
 677         osp.connector_id = connector_id;
 678         osp.prop_id = property_id;
 679         osp.value = value;
 680
 681         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPROPERTY, &osp);
 682 }
 683
 684 /*
 685  * checks if a modesetting capable driver has attached to the pci id
 686  * returns 0 if modesetting supported.
 687  *  -EINVAL or invalid bus id
 688  *  -ENOSYS if no modesetting support
 689 */
 690 int drmCheckModesettingSupported(const char *busid)
 691 {
 692 #ifdef __linux__
 693         char pci_dev_dir[1024];
 694         int domain, bus, dev, func;
 695         DIR *sysdir;
 696         struct dirent *dent;
 697         int found = 0, ret;
 698
 699         ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev, &func);
 700         if (ret != 4)
 701                 return -EINVAL;
 702
 703         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/drm",
 704                 domain, bus, dev, func);
 705
 706         sysdir = opendir(pci_dev_dir);
 707         if (sysdir) {
 708                 dent = readdir(sysdir);
 709                 while (dent) {
 710                         if (!strncmp(dent->d_name, "controlD", 8)) {
 711                                 found = 1;
 712                                 break;
 713                         }
 714
 715                         dent = readdir(sysdir);
 716                 }
 717                 closedir(sysdir);
 718                 if (found)
 719                         return 0;
 720         }
 721
 722         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/",
 723                 domain, bus, dev, func);
 724
 725         sysdir = opendir(pci_dev_dir);
 726         if (!sysdir)
 727                 return -EINVAL;
 728
 729         dent = readdir(sysdir);
 730         while (dent) {
 731                 if (!strncmp(dent->d_name, "drm:controlD", 12)) {
 732                         found = 1;
 733                         break;
 734                 }
 735
 736                 dent = readdir(sysdir);
 737         }
 738
 739         closedir(sysdir);
 740         if (found)
 741                 return 0;
 742 #endif
 743         return -ENOSYS;
 744
 745 }
 746
 747 int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
 748                         uint16_t *red, uint16_t *green, uint16_t *blue)
 749 {
 750         struct drm_mode_crtc_lut l;
 751
 752         l.crtc_id = crtc_id;
 753         l.gamma_size = size;
 754         l.red = VOID2U64(red);
 755         l.green = VOID2U64(green);
 756         l.blue = VOID2U64(blue);
 757
 758         return DRM_IOCTL(fd, DRM_IOCTL_MODE_GETGAMMA, &l);
 759 }
 760
 761 int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
 762                         uint16_t *red, uint16_t *green, uint16_t *blue)
 763 {
 764         struct drm_mode_crtc_lut l;
 765
 766         l.crtc_id = crtc_id;
 767         l.gamma_size = size;
 768         l.red = VOID2U64(red);
 769         l.green = VOID2U64(green);
 770         l.blue = VOID2U64(blue);
 771
 772         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETGAMMA, &l);
 773 }
 774
 775 int drmHandleEvent(int fd, drmEventContextPtr evctx)
 776 {
 777         char buffer[1024];
 778         int len, i;
 779         struct drm_event *e;
 780         struct drm_event_vblank *vblank;
 781
 782         /* The DRM read semantics guarantees that we always get only
 783          * complete events. */
 784
 785         len = read(fd, buffer, sizeof buffer);
 786         if (len == 0)
 787                 return 0;
 788         if (len < sizeof *e)
 789                 return -1;
 790
 791         i = 0;
 792         while (i < len) {
 793                 e = (struct drm_event *) &buffer[i];
 794                 switch (e->type) {
 795                 case DRM_EVENT_VBLANK:
 796                         if (evctx->version < 1 ||
 797                             evctx->vblank_handler == NULL)
 798                                 break;
 799                         vblank = (struct drm_event_vblank *) e;
 800                         evctx->vblank_handler(fd,
 801                                               vblank->sequence,
 802                                               vblank->tv_sec,
 803                                               vblank->tv_usec,
 804                                               U642VOID (vblank->user_data));
 805                         break;
 806                 case DRM_EVENT_FLIP_COMPLETE:
 807                         if (evctx->version < 2 ||
 808                             evctx->page_flip_handler == NULL)
 809                                 break;
 810                         vblank = (struct drm_event_vblank *) e;
 811                         evctx->page_flip_handler(fd,
 812                                                  vblank->sequence,
 813                                                  vblank->tv_sec,
 814                                                  vblank->tv_usec,
 815                                                  U642VOID (vblank->user_data));
 816                         break;
 817                 default:
 818                         break;
 819                 }
 820                 i += e->length;
 821         }
 822
 823         return 0;
 824 }
 825
 826 int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
 827                     uint32_t flags, void *user_data)
 828 {
 829         struct drm_mode_crtc_page_flip flip;
 830
 831         flip.fb_id = fb_id;
 832         flip.crtc_id = crtc_id;
 833         flip.user_data = VOID2U64(user_data);
 834         flip.flags = flags;
 835         flip.reserved = 0;
 836
 837         return DRM_IOCTL(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);
 838 }
 839
 840 int drmModeSetPlane(int fd, uint32_t plane_id, uint32_t crtc_id,
 841                     uint32_t fb_id, uint32_t flags,
 842                     uint32_t crtc_x, uint32_t crtc_y,
 843                     uint32_t crtc_w, uint32_t crtc_h,
 844                     uint32_t src_x, uint32_t src_y,
 845                     uint32_t src_w, uint32_t src_h)
 846
 847 {
 848         struct drm_mode_set_plane s;
 849
 850         s.plane_id = plane_id;
 851         s.crtc_id = crtc_id;
 852         s.fb_id = fb_id;
 853         s.flags = flags;
 854         s.crtc_x = crtc_x;
 855         s.crtc_y = crtc_y;
 856         s.crtc_w = crtc_w;
 857         s.crtc_h = crtc_h;
 858         s.src_x = src_x;
 859         s.src_y = src_y;
 860         s.src_w = src_w;
 861         s.src_h = src_h;
 862
 863         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPLANE, &s);
 864 }
 865
 866
 867 drmModePlanePtr drmModeGetPlane(int fd, uint32_t plane_id)
 868 {
 869         struct drm_mode_get_plane ovr, counts;
 870         drmModePlanePtr r = 0;
 871
 872 retry:
 873         memset(&ovr, 0, sizeof(struct drm_mode_get_plane));
 874         ovr.plane_id = plane_id;
 875         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
 876                 return 0;
 877
 878         counts = ovr;
 879
 880         if (ovr.count_format_types) {
 881                 ovr.format_type_ptr = VOID2U64(drmMalloc(ovr.count_format_types *
 882                                                          sizeof(uint32_t)));
 883                 if (!ovr.format_type_ptr)
 884                         goto err_allocs;
 885         }
 886
 887         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
 888                 goto err_allocs;
 889
 890         if (counts.count_format_types < ovr.count_format_types) {
 891                 drmFree(U642VOID(ovr.format_type_ptr));
 892                 goto retry;
 893         }
 894
 895         if (!(r = drmMalloc(sizeof(*r))))
 896                 goto err_allocs;
 897
 898         r->count_formats = ovr.count_format_types;
 899         r->plane_id = ovr.plane_id;
 900         r->crtc_id = ovr.crtc_id;
 901         r->fb_id = ovr.fb_id;
 902         r->possible_crtcs = ovr.possible_crtcs;
 903         r->gamma_size = ovr.gamma_size;
 904         r->formats = drmAllocCpy(U642VOID(ovr.format_type_ptr),
 905                                  ovr.count_format_types, sizeof(uint32_t));
 906         if (ovr.count_format_types && !r->formats) {
 907                 drmFree(r->formats);
 908                 drmFree(r);
 909                 r = 0;
 910         }
 911
 912 err_allocs:
 913         drmFree(U642VOID(ovr.format_type_ptr));
 914
 915         return r;
 916 }
 917
 918 void drmModeFreePlane(drmModePlanePtr ptr)
 919 {
 920         if (!ptr)
 921                 return;
 922
 923         drmFree(ptr->formats);
 924         drmFree(ptr);
 925 }
 926
 927 drmModePlaneResPtr drmModeGetPlaneResources(int fd)
 928 {
 929         struct drm_mode_get_plane_res res, counts;
 930         drmModePlaneResPtr r = 0;
 931
 932 retry:
 933         memset(&res, 0, sizeof(struct drm_mode_get_plane_res));
 934         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
 935                 return 0;
 936
 937         counts = res;
 938
 939         if (res.count_planes) {
 940                 res.plane_id_ptr = VOID2U64(drmMalloc(res.count_planes *
 941                                                         sizeof(uint32_t)));
 942                 if (!res.plane_id_ptr)
 943                         goto err_allocs;
 944         }
 945
 946         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
 947                 goto err_allocs;
 948
 949         if (counts.count_planes < res.count_planes) {
 950                 drmFree(U642VOID(res.plane_id_ptr));
 951                 goto retry;
 952         }
 953
 954         if (!(r = drmMalloc(sizeof(*r))))
 955                 goto err_allocs;
 956
 957         r->count_planes = res.count_planes;
 958         r->planes = drmAllocCpy(U642VOID(res.plane_id_ptr),
 959                                   res.count_planes, sizeof(uint32_t));
 960         if (res.count_planes && !r->planes) {
 961                 drmFree(r->planes);
 962                 drmFree(r);
 963                 r = 0;
 964         }
 965
 966 err_allocs:
 967         drmFree(U642VOID(res.plane_id_ptr));
 968
 969         return r;
 970 }
 971
 972 void drmModeFreePlaneResources(drmModePlaneResPtr ptr)
 973 {
 974         if (!ptr)
 975                 return;
 976
 977         drmFree(ptr->planes);
 978         drmFree(ptr);
 979 }
 980
 981 drmModeObjectPropertiesPtr drmModeObjectGetProperties(int fd,
 982                                                       uint32_t object_id,
 983                                                       uint32_t object_type)
 984 {
 985         struct drm_mode_obj_get_properties properties;
 986         drmModeObjectPropertiesPtr ret = NULL;
 987         uint32_t count;
 988
 989 retry:
 990         memset(&properties, 0, sizeof(struct drm_mode_obj_get_properties));
 991         properties.obj_id = object_id;
 992         properties.obj_type = object_type;
 993
 994         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
 995                 return 0;
 996
 997         count = properties.count_props;
 998
 999         if (count) {
1000                 properties.props_ptr = VOID2U64(drmMalloc(count *
1001                                                           sizeof(uint32_t)));
1002                 if (!properties.props_ptr)
1003                         goto err_allocs;
1004                 properties.prop_values_ptr = VOID2U64(drmMalloc(count *
1005                                                       sizeof(uint64_t)));
1006                 if (!properties.prop_values_ptr)
1007                         goto err_allocs;
1008         }
1009
1010         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1011                 goto err_allocs;
1012
1013         if (count < properties.count_props) {
1014                 drmFree(U642VOID(properties.props_ptr));
1015                 drmFree(U642VOID(properties.prop_values_ptr));
1016                 goto retry;
1017         }
1018         count = properties.count_props;
1019
1020         ret = drmMalloc(sizeof(*ret));
1021         if (!ret)
1022                 goto err_allocs;
1023
1024         ret->count_props = count;
1025         ret->props = drmAllocCpy(U642VOID(properties.props_ptr),
1026                                  count, sizeof(uint32_t));
1027         ret->prop_values = drmAllocCpy(U642VOID(properties.prop_values_ptr),
1028                                        count, sizeof(uint64_t));
1029         if (ret->count_props && (!ret->props || !ret->prop_values)) {
1030                 drmFree(ret->props);
1031                 drmFree(ret->prop_values);
1032                 drmFree(ret);
1033                 ret = NULL;
1034         }
1035
1036 err_allocs:
1037         drmFree(U642VOID(properties.props_ptr));
1038         drmFree(U642VOID(properties.prop_values_ptr));
1039         return ret;
1040 }
1041
1042 void drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr)
1043 {
1044         if (!ptr)
1045                 return;
1046         drmFree(ptr->props);
1047         drmFree(ptr->prop_values);
1048         drmFree(ptr);
1049 }
1050
1051 int drmModeObjectSetProperty(int fd, uint32_t object_id, uint32_t object_type,
1052                              uint32_t property_id, uint64_t value)
1053 {
1054         struct drm_mode_obj_set_property prop;
1055
1056         prop.value = value;
1057         prop.prop_id = property_id;
1058         prop.obj_id = object_id;
1059         prop.obj_type = object_type;
1060
1061         return DRM_IOCTL(fd, DRM_IOCTL_MODE_OBJ_SETPROPERTY, &prop);
1062 }