src/gbm/backends/dri/gbm_dri.c

   1 /*
   2  * Copyright © 2011 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  26  */
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <stddef.h>
  31 #include <stdint.h>
  32 #include <string.h>
  33 #include <errno.h>
  34 #include <limits.h>
  35 #include <assert.h>
  36
  37 #include <sys/types.h>
  38 #include <unistd.h>
  39 #include <dlfcn.h>
  40 #include <xf86drm.h>
  41
  42 #include <GL/gl.h> /* dri_interface needs GL types */
  43 #include <GL/internal/dri_interface.h>
  44
  45 #include "gbm_driint.h"
  46
  47 #include "gbmint.h"
  48 #include "loader.h"
  49
  50 /* For importing wl_buffer */
  51 #if HAVE_WAYLAND_PLATFORM
  52 #include "../../../egl/wayland/wayland-drm/wayland-drm.h"
  53 #endif
  54
  55 static __DRIimage *
  56 dri_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
  57 {
  58    struct gbm_dri_device *dri = data;
  59
  60    if (dri->lookup_image == NULL)
  61       return NULL;
  62
  63    return dri->lookup_image(screen, image, dri->lookup_user_data);
  64 }
  65
  66 static __DRIbuffer *
  67 dri_get_buffers(__DRIdrawable * driDrawable,
  68                  int *width, int *height,
  69                  unsigned int *attachments, int count,
  70                  int *out_count, void *data)
  71 {
  72    struct gbm_dri_surface *surf = data;
  73    struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
  74
  75    if (dri->get_buffers == NULL)
  76       return NULL;
  77
  78    return dri->get_buffers(driDrawable, width, height, attachments,
  79                            count, out_count, surf->dri_private);
  80 }
  81
  82 static void
  83 dri_flush_front_buffer(__DRIdrawable * driDrawable, void *data)
  84 {
  85    struct gbm_dri_surface *surf = data;
  86    struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
  87
  88    if (dri->flush_front_buffer != NULL)
  89       dri->flush_front_buffer(driDrawable, surf->dri_private);
  90 }
  91
  92 static __DRIbuffer *
  93 dri_get_buffers_with_format(__DRIdrawable * driDrawable,
  94                             int *width, int *height,
  95                             unsigned int *attachments, int count,
  96                             int *out_count, void *data)
  97 {
  98    struct gbm_dri_surface *surf = data;
  99    struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
 100
 101    if (dri->get_buffers_with_format == NULL)
 102       return NULL;
 103
 104    return
 105       dri->get_buffers_with_format(driDrawable, width, height, attachments,
 106                                    count, out_count, surf->dri_private);
 107 }
 108
 109 static int
 110 image_get_buffers(__DRIdrawable *driDrawable,
 111                   unsigned int format,
 112                   uint32_t *stamp,
 113                   void *loaderPrivate,
 114                   uint32_t buffer_mask,
 115                   struct __DRIimageList *buffers)
 116 {
 117    struct gbm_dri_surface *surf = loaderPrivate;
 118    struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
 119
 120    if (dri->image_get_buffers == NULL)
 121       return 0;
 122
 123    return dri->image_get_buffers(driDrawable, format, stamp,
 124                                  surf->dri_private, buffer_mask, buffers);
 125 }
 126
 127 static void
 128 swrast_get_drawable_info(__DRIdrawable *driDrawable,
 129                          int           *x,
 130                          int           *y,
 131                          int           *width,
 132                          int           *height,
 133                          void          *loaderPrivate)
 134 {
 135    struct gbm_dri_surface *surf = loaderPrivate;
 136
 137    *x = 0;
 138    *y = 0;
 139    *width = surf->base.width;
 140    *height = surf->base.height;
 141 }
 142
 143 static void
 144 swrast_put_image2(__DRIdrawable *driDrawable,
 145                   int            op,
 146                   int            x,
 147                   int            y,
 148                   int            width,
 149                   int            height,
 150                   int            stride,
 151                   char          *data,
 152                   void          *loaderPrivate)
 153 {
 154    struct gbm_dri_surface *surf = loaderPrivate;
 155    struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
 156
 157    dri->swrast_put_image2(driDrawable,
 158                           op, x, y,
 159                           width, height, stride,
 160                           data, surf->dri_private);
 161 }
 162
 163 static void
 164 swrast_put_image(__DRIdrawable *driDrawable,
 165                  int            op,
 166                  int            x,
 167                  int            y,
 168                  int            width,
 169                  int            height,
 170                  char          *data,
 171                  void          *loaderPrivate)
 172 {
 173    return swrast_put_image2(driDrawable, op, x, y, width, height,
 174                             width * 4, data, loaderPrivate);
 175 }
 176
 177 static void
 178 swrast_get_image(__DRIdrawable *driDrawable,
 179                  int            x,
 180                  int            y,
 181                  int            width,
 182                  int            height,
 183                  char          *data,
 184                  void          *loaderPrivate)
 185 {
 186    struct gbm_dri_surface *surf = loaderPrivate;
 187    struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
 188
 189    dri->swrast_get_image(driDrawable,
 190                          x, y,
 191                          width, height,
 192                          data, surf->dri_private);
 193 }
 194
 195 static const __DRIuseInvalidateExtension use_invalidate = {
 196    .base = { __DRI_USE_INVALIDATE, 1 }
 197 };
 198
 199 static const __DRIimageLookupExtension image_lookup_extension = {
 200    .base = { __DRI_IMAGE_LOOKUP, 1 },
 201
 202    .lookupEGLImage          = dri_lookup_egl_image
 203 };
 204
 205 static const __DRIdri2LoaderExtension dri2_loader_extension = {
 206    .base = { __DRI_DRI2_LOADER, 3 },
 207
 208    .getBuffers              = dri_get_buffers,
 209    .flushFrontBuffer        = dri_flush_front_buffer,
 210    .getBuffersWithFormat    = dri_get_buffers_with_format,
 211 };
 212
 213 static const __DRIimageLoaderExtension image_loader_extension = {
 214    .base = { __DRI_IMAGE_LOADER, 1 },
 215
 216    .getBuffers          = image_get_buffers,
 217    .flushFrontBuffer    = dri_flush_front_buffer,
 218 };
 219
 220 static const __DRIswrastLoaderExtension swrast_loader_extension = {
 221    .base = { __DRI_SWRAST_LOADER, 2 },
 222
 223    .getDrawableInfo = swrast_get_drawable_info,
 224    .putImage        = swrast_put_image,
 225    .getImage        = swrast_get_image,
 226    .putImage2       = swrast_put_image2
 227 };
 228
 229 static const __DRIextension *gbm_dri_screen_extensions[] = {
 230    &image_lookup_extension.base,
 231    &use_invalidate.base,
 232    &dri2_loader_extension.base,
 233    &image_loader_extension.base,
 234    &swrast_loader_extension.base,
 235    NULL,
 236 };
 237
 238 struct dri_extension_match {
 239    const char *name;
 240    int version;
 241    int offset;
 242    int optional;
 243 };
 244
 245 static struct dri_extension_match dri_core_extensions[] = {
 246    { __DRI2_FLUSH, 1, offsetof(struct gbm_dri_device, flush) },
 247    { __DRI_IMAGE, 1, offsetof(struct gbm_dri_device, image) },
 248    { __DRI2_FENCE, 2, offsetof(struct gbm_dri_device, fence), 1 },
 249    { NULL, 0, 0 }
 250 };
 251
 252 static struct dri_extension_match gbm_dri_device_extensions[] = {
 253    { __DRI_CORE, 1, offsetof(struct gbm_dri_device, core) },
 254    { __DRI_DRI2, 1, offsetof(struct gbm_dri_device, dri2) },
 255    { NULL, 0, 0 }
 256 };
 257
 258 static struct dri_extension_match gbm_swrast_device_extensions[] = {
 259    { __DRI_CORE, 1, offsetof(struct gbm_dri_device, core), },
 260    { __DRI_SWRAST, 1, offsetof(struct gbm_dri_device, swrast) },
 261    { NULL, 0, 0 }
 262 };
 263
 264 static int
 265 dri_bind_extensions(struct gbm_dri_device *dri,
 266                     struct dri_extension_match *matches,
 267                     const __DRIextension **extensions)
 268 {
 269    int i, j, ret = 0;
 270    void *field;
 271
 272    for (i = 0; extensions[i]; i++) {
 273       for (j = 0; matches[j].name; j++) {
 274          if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
 275              extensions[i]->version >= matches[j].version) {
 276             field = ((char *) dri + matches[j].offset);
 277             *(const __DRIextension **) field = extensions[i];
 278          }
 279       }
 280    }
 281
 282    for (j = 0; matches[j].name; j++) {
 283       field = ((char *) dri + matches[j].offset);
 284       if ((*(const __DRIextension **) field == NULL) && !matches[j].optional) {
 285          ret = -1;
 286       }
 287    }
 288
 289    return ret;
 290 }
 291
 292 static const __DRIextension **
 293 dri_open_driver(struct gbm_dri_device *dri)
 294 {
 295    const __DRIextension **extensions = NULL;
 296    char path[PATH_MAX], *search_paths, *p, *next, *end;
 297    char *get_extensions_name;
 298
 299    search_paths = NULL;
 300    /* don't allow setuid apps to use LIBGL_DRIVERS_PATH or GBM_DRIVERS_PATH */
 301    if (geteuid() == getuid()) {
 302       /* Read GBM_DRIVERS_PATH first for compatibility, but LIBGL_DRIVERS_PATH
 303        * is recommended over GBM_DRIVERS_PATH.
 304        */
 305       search_paths = getenv("GBM_DRIVERS_PATH");
 306
 307       /* Read LIBGL_DRIVERS_PATH if GBM_DRIVERS_PATH was not set.
 308        * LIBGL_DRIVERS_PATH is recommended over GBM_DRIVERS_PATH.
 309        */
 310       if (search_paths == NULL) {
 311          search_paths = getenv("LIBGL_DRIVERS_PATH");
 312       }
 313    }
 314    if (search_paths == NULL)
 315       search_paths = DEFAULT_DRIVER_DIR;
 316
 317    /* Temporarily work around dri driver libs that need symbols in libglapi
 318     * but don't automatically link it in.
 319     */
 320    /* XXX: Library name differs on per platforms basis. Update this as
 321     * osx/cygwin/windows/bsd gets support for GBM..
 322     */
 323    dlopen("libglapi.so.0", RTLD_LAZY | RTLD_GLOBAL);
 324
 325    dri->driver = NULL;
 326    end = search_paths + strlen(search_paths);
 327    for (p = search_paths; p < end && dri->driver == NULL; p = next + 1) {
 328       int len;
 329       next = strchr(p, ':');
 330       if (next == NULL)
 331          next = end;
 332
 333       len = next - p;
 334 #if GLX_USE_TLS
 335       snprintf(path, sizeof path,
 336                "%.*s/tls/%s_dri.so", len, p, dri->base.driver_name);
 337       dri->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 338 #endif
 339       if (dri->driver == NULL) {
 340          snprintf(path, sizeof path,
 341                   "%.*s/%s_dri.so", len, p, dri->base.driver_name);
 342          dri->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 343       }
 344       /* not need continue to loop all paths once the driver is found */
 345       if (dri->driver != NULL)
 346          break;
 347
 348 #ifdef ANDROID
 349       snprintf(path, sizeof path, "%.*s/gallium_dri.so", len, p);
 350       dri->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
 351       if (dri->driver == NULL)
 352          sprintf("failed to open %s: %s\n", path, dlerror());
 353       else
 354          break;
 355 #endif
 356    }
 357
 358    if (dri->driver == NULL) {
 359       fprintf(stderr, "gbm: failed to open any driver (search paths %s)\n",
 360               search_paths);
 361       fprintf(stderr, "gbm: Last dlopen error: %s\n", dlerror());
 362       return NULL;
 363    }
 364
 365    if (asprintf(&get_extensions_name, "%s_%s",
 366                 __DRI_DRIVER_GET_EXTENSIONS, dri->base.driver_name) != -1) {
 367       const __DRIextension **(*get_extensions)(void);
 368
 369       get_extensions = dlsym(dri->driver, get_extensions_name);
 370       free(get_extensions_name);
 371
 372       if (get_extensions)
 373          extensions = get_extensions();
 374    }
 375
 376    if (!extensions)
 377       extensions = dlsym(dri->driver, __DRI_DRIVER_EXTENSIONS);
 378    if (extensions == NULL) {
 379       fprintf(stderr, "gbm: driver exports no extensions (%s)", dlerror());
 380       dlclose(dri->driver);
 381    }
 382
 383    return extensions;
 384 }
 385
 386 static int
 387 dri_load_driver(struct gbm_dri_device *dri)
 388 {
 389    const __DRIextension **extensions;
 390
 391    extensions = dri_open_driver(dri);
 392    if (!extensions)
 393       return -1;
 394
 395    if (dri_bind_extensions(dri, gbm_dri_device_extensions, extensions) < 0) {
 396       dlclose(dri->driver);
 397       fprintf(stderr, "failed to bind extensions\n");
 398       return -1;
 399    }
 400
 401    dri->driver_extensions = extensions;
 402
 403    return 0;
 404 }
 405
 406 static int
 407 dri_load_driver_swrast(struct gbm_dri_device *dri)
 408 {
 409    const __DRIextension **extensions;
 410
 411    extensions = dri_open_driver(dri);
 412    if (!extensions)
 413       return -1;
 414
 415    if (dri_bind_extensions(dri, gbm_swrast_device_extensions, extensions) < 0) {
 416       dlclose(dri->driver);
 417       fprintf(stderr, "failed to bind extensions\n");
 418       return -1;
 419    }
 420
 421    dri->driver_extensions = extensions;
 422
 423    return 0;
 424 }
 425
 426 static int
 427 dri_screen_create_dri2(struct gbm_dri_device *dri, char *driver_name)
 428 {
 429    const __DRIextension **extensions;
 430    int ret = 0;
 431
 432    dri->base.driver_name = driver_name;
 433    if (dri->base.driver_name == NULL)
 434       return -1;
 435
 436    ret = dri_load_driver(dri);
 437    if (ret) {
 438       fprintf(stderr, "failed to load driver: %s\n", dri->base.driver_name);
 439       return ret;
 440    };
 441
 442    dri->extensions = gbm_dri_screen_extensions;
 443
 444    if (dri->dri2 == NULL)
 445       return -1;
 446
 447    if (dri->dri2->base.version >= 4) {
 448       dri->screen = dri->dri2->createNewScreen2(0, dri->base.base.fd,
 449                                                 dri->extensions,
 450                                                 dri->driver_extensions,
 451                                                 &dri->driver_configs, dri);
 452    } else {
 453       dri->screen = dri->dri2->createNewScreen(0, dri->base.base.fd,
 454                                                dri->extensions,
 455                                                &dri->driver_configs, dri);
 456    }
 457    if (dri->screen == NULL)
 458       return -1;
 459
 460    extensions = dri->core->getExtensions(dri->screen);
 461    if (dri_bind_extensions(dri, dri_core_extensions, extensions) < 0) {
 462       ret = -1;
 463       goto free_screen;
 464    }
 465
 466    dri->lookup_image = NULL;
 467    dri->lookup_user_data = NULL;
 468
 469    return 0;
 470
 471 free_screen:
 472    dri->core->destroyScreen(dri->screen);
 473
 474    return ret;
 475 }
 476
 477 static int
 478 dri_screen_create_swrast(struct gbm_dri_device *dri)
 479 {
 480    int ret;
 481
 482    dri->base.driver_name = strdup("swrast");
 483    if (dri->base.driver_name == NULL)
 484       return -1;
 485
 486    ret = dri_load_driver_swrast(dri);
 487    if (ret) {
 488       fprintf(stderr, "failed to load swrast driver\n");
 489       return ret;
 490    }
 491
 492    dri->extensions = gbm_dri_screen_extensions;
 493
 494    if (dri->swrast == NULL)
 495       return -1;
 496
 497    if (dri->swrast->base.version >= 4) {
 498       dri->screen = dri->swrast->createNewScreen2(0, dri->extensions,
 499                                                   dri->driver_extensions,
 500                                                   &dri->driver_configs, dri);
 501    } else {
 502       dri->screen = dri->swrast->createNewScreen(0, dri->extensions,
 503                                                  &dri->driver_configs, dri);
 504    }
 505    if (dri->screen == NULL)
 506       return -1;
 507
 508    dri->lookup_image = NULL;
 509    dri->lookup_user_data = NULL;
 510
 511    return 0;
 512 }
 513
 514 static int
 515 dri_screen_create(struct gbm_dri_device *dri)
 516 {
 517    char *driver_name;
 518
 519    driver_name = loader_get_driver_for_fd(dri->base.base.fd, 0);
 520    if (!driver_name)
 521       return -1;
 522
 523    return dri_screen_create_dri2(dri, driver_name);
 524 }
 525
 526 static int
 527 dri_screen_create_sw(struct gbm_dri_device *dri)
 528 {
 529    char *driver_name;
 530    int ret;
 531
 532    driver_name = strdup("kms_swrast");
 533    if (!driver_name)
 534       return -errno;
 535
 536    ret = dri_screen_create_dri2(dri, driver_name);
 537    if (ret == 0)
 538       return ret;
 539
 540    return dri_screen_create_swrast(dri);
 541 }
 542
 543 static int
 544 gbm_dri_is_format_supported(struct gbm_device *gbm,
 545                             uint32_t format,
 546                             uint32_t usage)
 547 {
 548    switch (format) {
 549    case GBM_BO_FORMAT_XRGB8888:
 550    case GBM_FORMAT_XBGR8888:
 551    case GBM_FORMAT_XRGB8888:
 552       break;
 553    case GBM_BO_FORMAT_ARGB8888:
 554    case GBM_FORMAT_ARGB8888:
 555       if (usage & GBM_BO_USE_SCANOUT)
 556          return 0;
 557       break;
 558    default:
 559       return 0;
 560    }
 561
 562    if (usage & GBM_BO_USE_CURSOR &&
 563        usage & GBM_BO_USE_RENDERING)
 564       return 0;
 565
 566    return 1;
 567 }
 568
 569 static int
 570 gbm_dri_bo_write(struct gbm_bo *_bo, const void *buf, size_t count)
 571 {
 572    struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
 573
 574    if (bo->image != NULL) {
 575       errno = EINVAL;
 576       return -1;
 577    }
 578
 579    memcpy(bo->map, buf, count);
 580
 581    return 0;
 582 }
 583
 584 static int
 585 gbm_dri_bo_get_fd(struct gbm_bo *_bo)
 586 {
 587    struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
 588    struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
 589    int fd;
 590
 591    if (bo->image == NULL)
 592       return -1;
 593
 594    dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_FD, &fd);
 595
 596    return fd;
 597 }
 598
 599 static void
 600 gbm_dri_bo_destroy(struct gbm_bo *_bo)
 601 {
 602    struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
 603    struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
 604    struct drm_mode_destroy_dumb arg;
 605
 606    if (bo->image != NULL) {
 607       dri->image->destroyImage(bo->image);
 608    } else {
 609       gbm_dri_bo_unmap_dumb(bo);
 610       memset(&arg, 0, sizeof(arg));
 611       arg.handle = bo->handle;
 612       drmIoctl(dri->base.base.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg);
 613    }
 614
 615    free(bo);
 616 }
 617
 618 static uint32_t
 619 gbm_dri_to_gbm_format(uint32_t dri_format)
 620 {
 621    uint32_t ret = 0;
 622
 623    switch (dri_format) {
 624    case __DRI_IMAGE_FORMAT_RGB565:
 625       ret = GBM_FORMAT_RGB565;
 626       break;
 627    case __DRI_IMAGE_FORMAT_XRGB8888:
 628       ret = GBM_FORMAT_XRGB8888;
 629       break;
 630    case __DRI_IMAGE_FORMAT_ARGB8888:
 631       ret = GBM_FORMAT_ARGB8888;
 632       break;
 633    case __DRI_IMAGE_FORMAT_XBGR8888:
 634       ret = GBM_FORMAT_XBGR8888;
 635       break;
 636    case __DRI_IMAGE_FORMAT_ABGR8888:
 637       ret = GBM_FORMAT_ABGR8888;
 638       break;
 639    default:
 640       ret = 0;
 641       break;
 642    }
 643
 644    return ret;
 645 }
 646
 647 static struct gbm_bo *
 648 gbm_dri_bo_import(struct gbm_device *gbm,
 649                   uint32_t type, void *buffer, uint32_t usage)
 650 {
 651    struct gbm_dri_device *dri = gbm_dri_device(gbm);
 652    struct gbm_dri_bo *bo;
 653    __DRIimage *image;
 654    unsigned dri_use = 0;
 655    int gbm_format;
 656
 657    /* Required for query image WIDTH & HEIGHT */
 658    if (dri->image == NULL || dri->image->base.version < 4) {
 659       errno = ENOSYS;
 660       return NULL;
 661    }
 662
 663    switch (type) {
 664 #if HAVE_WAYLAND_PLATFORM
 665    case GBM_BO_IMPORT_WL_BUFFER:
 666    {
 667       struct wl_drm_buffer *wb;
 668
 669       if (!dri->wl_drm) {
 670          errno = EINVAL;
 671          return NULL;
 672       }
 673
 674       wb = wayland_drm_buffer_get(dri->wl_drm, (struct wl_resource *) buffer);
 675       if (!wb) {
 676          errno = EINVAL;
 677          return NULL;
 678       }
 679
 680       image = dri->image->dupImage(wb->driver_buffer, NULL);
 681
 682       switch (wb->format) {
 683       case WL_DRM_FORMAT_XRGB8888:
 684          gbm_format = GBM_FORMAT_XRGB8888;
 685          break;
 686       case WL_DRM_FORMAT_ARGB8888:
 687          gbm_format = GBM_FORMAT_ARGB8888;
 688          break;
 689       case WL_DRM_FORMAT_RGB565:
 690          gbm_format = GBM_FORMAT_RGB565;
 691          break;
 692       case WL_DRM_FORMAT_YUYV:
 693          gbm_format = GBM_FORMAT_YUYV;
 694          break;
 695       default:
 696          return NULL;
 697       }
 698       break;
 699    }
 700 #endif
 701
 702    case GBM_BO_IMPORT_EGL_IMAGE:
 703    {
 704       int dri_format;
 705       if (dri->lookup_image == NULL) {
 706          errno = EINVAL;
 707          return NULL;
 708       }
 709
 710       image = dri->lookup_image(dri->screen, buffer, dri->lookup_user_data);
 711       image = dri->image->dupImage(image, NULL);
 712       dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &dri_format);
 713       gbm_format = gbm_dri_to_gbm_format(dri_format);
 714       if (gbm_format == 0) {
 715          errno = EINVAL;
 716          return NULL;
 717       }
 718       break;
 719    }
 720
 721    case GBM_BO_IMPORT_FD:
 722    {
 723       struct gbm_import_fd_data *fd_data = buffer;
 724       int stride = fd_data->stride, offset = 0;
 725       int dri_format;
 726
 727       switch (fd_data->format) {
 728       case GBM_BO_FORMAT_XRGB8888:
 729          dri_format = GBM_FORMAT_XRGB8888;
 730          break;
 731       case GBM_BO_FORMAT_ARGB8888:
 732          dri_format = GBM_FORMAT_ARGB8888;
 733          break;
 734       default:
 735          dri_format = fd_data->format;
 736       }
 737
 738       image = dri->image->createImageFromFds(dri->screen,
 739                                              fd_data->width,
 740                                              fd_data->height,
 741                                              dri_format,
 742                                              &fd_data->fd, 1,
 743                                              &stride, &offset,
 744                                              NULL);
 745       if (image == NULL) {
 746          errno = EINVAL;
 747          return NULL;
 748       }
 749       gbm_format = fd_data->format;
 750       break;
 751    }
 752
 753    default:
 754       errno = ENOSYS;
 755       return NULL;
 756    }
 757
 758
 759    bo = calloc(1, sizeof *bo);
 760    if (bo == NULL)
 761       return NULL;
 762
 763    bo->image = image;
 764
 765    if (usage & GBM_BO_USE_SCANOUT)
 766       dri_use |= __DRI_IMAGE_USE_SCANOUT;
 767    if (usage & GBM_BO_USE_CURSOR)
 768       dri_use |= __DRI_IMAGE_USE_CURSOR;
 769    if (dri->image->base.version >= 2 &&
 770        !dri->image->validateUsage(bo->image, dri_use)) {
 771       errno = EINVAL;
 772       free(bo);
 773       return NULL;
 774    }
 775
 776    bo->base.base.gbm = gbm;
 777    bo->base.base.format = gbm_format;
 778
 779    dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_WIDTH,
 780                           (int*)&bo->base.base.width);
 781    dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HEIGHT,
 782                           (int*)&bo->base.base.height);
 783    dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE,
 784                           (int*)&bo->base.base.stride);
 785    dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE,
 786                           &bo->base.base.handle.s32);
 787
 788    return &bo->base.base;
 789 }
 790
 791 static struct gbm_bo *
 792 create_dumb(struct gbm_device *gbm,
 793                   uint32_t width, uint32_t height,
 794                   uint32_t format, uint32_t usage)
 795 {
 796    struct gbm_dri_device *dri = gbm_dri_device(gbm);
 797    struct drm_mode_create_dumb create_arg;
 798    struct gbm_dri_bo *bo;
 799    struct drm_mode_destroy_dumb destroy_arg;
 800    int ret;
 801    int is_cursor, is_scanout;
 802
 803    is_cursor = (usage & GBM_BO_USE_CURSOR) != 0 &&
 804       format == GBM_FORMAT_ARGB8888;
 805    is_scanout = (usage & GBM_BO_USE_SCANOUT) != 0 &&
 806       format == GBM_FORMAT_XRGB8888;
 807    if (!is_cursor && !is_scanout) {
 808       errno = EINVAL;
 809       return NULL;
 810    }
 811
 812    bo = calloc(1, sizeof *bo);
 813    if (bo == NULL)
 814       return NULL;
 815
 816    memset(&create_arg, 0, sizeof(create_arg));
 817    create_arg.bpp = 32;
 818    create_arg.width = width;
 819    create_arg.height = height;
 820
 821    ret = drmIoctl(dri->base.base.fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_arg);
 822    if (ret)
 823       goto free_bo;
 824
 825    bo->base.base.gbm = gbm;
 826    bo->base.base.width = width;
 827    bo->base.base.height = height;
 828    bo->base.base.stride = create_arg.pitch;
 829    bo->base.base.format = format;
 830    bo->base.base.handle.u32 = create_arg.handle;
 831    bo->handle = create_arg.handle;
 832    bo->size = create_arg.size;
 833
 834    if (gbm_dri_bo_map_dumb(bo) == NULL)
 835       goto destroy_dumb;
 836
 837    return &bo->base.base;
 838
 839 destroy_dumb:
 840    memset(&destroy_arg, 0, sizeof destroy_arg);
 841    destroy_arg.handle = create_arg.handle;
 842    drmIoctl(dri->base.base.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
 843 free_bo:
 844    free(bo);
 845
 846    return NULL;
 847 }
 848
 849 static struct gbm_bo *
 850 gbm_dri_bo_create(struct gbm_device *gbm,
 851                   uint32_t width, uint32_t height,
 852                   uint32_t format, uint32_t usage)
 853 {
 854    struct gbm_dri_device *dri = gbm_dri_device(gbm);
 855    struct gbm_dri_bo *bo;
 856    int dri_format;
 857    unsigned dri_use = 0;
 858
 859    if (usage & GBM_BO_USE_WRITE || dri->image == NULL)
 860       return create_dumb(gbm, width, height, format, usage);
 861
 862    bo = calloc(1, sizeof *bo);
 863    if (bo == NULL)
 864       return NULL;
 865
 866    bo->base.base.gbm = gbm;
 867    bo->base.base.width = width;
 868    bo->base.base.height = height;
 869    bo->base.base.format = format;
 870
 871    switch (format) {
 872    case GBM_FORMAT_R8:
 873       dri_format = __DRI_IMAGE_FORMAT_R8;
 874       break;
 875    case GBM_FORMAT_GR88:
 876       dri_format = __DRI_IMAGE_FORMAT_GR88;
 877       break;
 878    case GBM_FORMAT_RGB565:
 879       dri_format = __DRI_IMAGE_FORMAT_RGB565;
 880       break;
 881    case GBM_FORMAT_XRGB8888:
 882    case GBM_BO_FORMAT_XRGB8888:
 883       dri_format = __DRI_IMAGE_FORMAT_XRGB8888;
 884       break;
 885    case GBM_FORMAT_ARGB8888:
 886    case GBM_BO_FORMAT_ARGB8888:
 887       dri_format = __DRI_IMAGE_FORMAT_ARGB8888;
 888       break;
 889    case GBM_FORMAT_ABGR8888:
 890       dri_format = __DRI_IMAGE_FORMAT_ABGR8888;
 891       break;
 892    case GBM_FORMAT_XBGR8888:
 893       dri_format = __DRI_IMAGE_FORMAT_XBGR8888;
 894       break;
 895    case GBM_FORMAT_ARGB2101010:
 896       dri_format = __DRI_IMAGE_FORMAT_ARGB2101010;
 897       break;
 898    case GBM_FORMAT_XRGB2101010:
 899       dri_format = __DRI_IMAGE_FORMAT_XRGB2101010;
 900       break;
 901    default:
 902       errno = EINVAL;
 903       goto failed;
 904    }
 905
 906    if (usage & GBM_BO_USE_SCANOUT)
 907       dri_use |= __DRI_IMAGE_USE_SCANOUT;
 908    if (usage & GBM_BO_USE_CURSOR)
 909       dri_use |= __DRI_IMAGE_USE_CURSOR;
 910    if (usage & GBM_BO_USE_LINEAR)
 911       dri_use |= __DRI_IMAGE_USE_LINEAR;
 912
 913    /* Gallium drivers requires shared in order to get the handle/stride */
 914    dri_use |= __DRI_IMAGE_USE_SHARE;
 915
 916    bo->image =
 917       dri->image->createImage(dri->screen,
 918                               width, height,
 919                               dri_format, dri_use,
 920                               bo);
 921    if (bo->image == NULL)
 922       goto failed;
 923
 924    dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE,
 925                           &bo->base.base.handle.s32);
 926    dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE,
 927                           (int *) &bo->base.base.stride);
 928
 929    return &bo->base.base;
 930
 931 failed:
 932    free(bo);
 933    return NULL;
 934 }
 935
 936 static void *
 937 gbm_dri_bo_map(struct gbm_bo *_bo,
 938               uint32_t x, uint32_t y,
 939               uint32_t width, uint32_t height,
 940               uint32_t flags, uint32_t *stride, void **map_data)
 941 {
 942    struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
 943    struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
 944
 945    /* If it's a dumb buffer, we already have a mapping */
 946    if (bo->map) {
 947       *map_data = (char *)bo->map + (bo->base.base.stride * y) + (x * 4);
 948       *stride = bo->base.base.stride;
 949       return *map_data;
 950    }
 951
 952    if (!dri->image || dri->image->base.version < 12) {
 953       errno = ENOSYS;
 954       return NULL;
 955    }
 956
 957    mtx_lock(&dri->mutex);
 958    if (!dri->context)
 959       dri->context = dri->dri2->createNewContext(dri->screen, NULL,
 960                                                  NULL, NULL);
 961    assert(dri->context);
 962    mtx_unlock(&dri->mutex);
 963
 964    /* GBM flags and DRI flags are the same, so just pass them on */
 965    return dri->image->mapImage(dri->context, bo->image, x, y,
 966                                width, height, flags, (int *)stride,
 967                                map_data);
 968 }
 969
 970 static void
 971 gbm_dri_bo_unmap(struct gbm_bo *_bo, void *map_data)
 972 {
 973    struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
 974    struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
 975
 976    /* Check if it's a dumb buffer and check the pointer is in range */
 977    if (bo->map) {
 978       assert(map_data >= bo->map);
 979       assert(map_data < (bo->map + bo->size));
 980       return;
 981    }
 982
 983    if (!dri->context || !dri->image || dri->image->base.version < 12)
 984       return;
 985
 986    dri->image->unmapImage(dri->context, bo->image, map_data);
 987 }
 988
 989
 990 static struct gbm_surface *
 991 gbm_dri_surface_create(struct gbm_device *gbm,
 992                        uint32_t width, uint32_t height,
 993                        uint32_t format, uint32_t flags)
 994 {
 995    struct gbm_dri_surface *surf;
 996
 997    surf = calloc(1, sizeof *surf);
 998    if (surf == NULL)
 999       return NULL;
1000
1001    surf->base.gbm = gbm;
1002    surf->base.width = width;
1003    surf->base.height = height;
1004    surf->base.format = format;
1005    surf->base.flags = flags;
1006
1007    return &surf->base;
1008 }
1009
1010 static void
1011 gbm_dri_surface_destroy(struct gbm_surface *_surf)
1012 {
1013    struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
1014
1015    free(surf);
1016 }
1017
1018 static void
1019 dri_destroy(struct gbm_device *gbm)
1020 {
1021    struct gbm_dri_device *dri = gbm_dri_device(gbm);
1022    unsigned i;
1023
1024    if (dri->context)
1025       dri->core->destroyContext(dri->context);
1026
1027    dri->core->destroyScreen(dri->screen);
1028    for (i = 0; dri->driver_configs[i]; i++)
1029       free((__DRIconfig *) dri->driver_configs[i]);
1030    free(dri->driver_configs);
1031    dlclose(dri->driver);
1032    free(dri->base.driver_name);
1033
1034    free(dri);
1035 }
1036
1037 static struct gbm_device *
1038 dri_device_create(int fd)
1039 {
1040    struct gbm_dri_device *dri;
1041    int ret, force_sw;
1042
1043    dri = calloc(1, sizeof *dri);
1044    if (!dri)
1045       return NULL;
1046
1047    dri->base.base.fd = fd;
1048    dri->base.base.bo_create = gbm_dri_bo_create;
1049    dri->base.base.bo_import = gbm_dri_bo_import;
1050    dri->base.base.bo_map = gbm_dri_bo_map;
1051    dri->base.base.bo_unmap = gbm_dri_bo_unmap;
1052    dri->base.base.is_format_supported = gbm_dri_is_format_supported;
1053    dri->base.base.bo_write = gbm_dri_bo_write;
1054    dri->base.base.bo_get_fd = gbm_dri_bo_get_fd;
1055    dri->base.base.bo_destroy = gbm_dri_bo_destroy;
1056    dri->base.base.destroy = dri_destroy;
1057    dri->base.base.surface_create = gbm_dri_surface_create;
1058    dri->base.base.surface_destroy = gbm_dri_surface_destroy;
1059
1060    dri->base.type = GBM_DRM_DRIVER_TYPE_DRI;
1061    dri->base.base.name = "drm";
1062
1063    mtx_init(&dri->mutex, mtx_plain);
1064
1065    force_sw = getenv("GBM_ALWAYS_SOFTWARE") != NULL;
1066    if (!force_sw) {
1067       ret = dri_screen_create(dri);
1068       if (ret)
1069          ret = dri_screen_create_sw(dri);
1070    } else {
1071       ret = dri_screen_create_sw(dri);
1072    }
1073
1074    if (ret)
1075       goto err_dri;
1076
1077    return &dri->base.base;
1078
1079 err_dri:
1080    free(dri);
1081
1082    return NULL;
1083 }
1084
1085 struct gbm_backend gbm_dri_backend = {
1086    .backend_name = "dri",
1087    .create_device = dri_device_create,
1088 };