src/egl/drivers/dri2/platform_drm.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  *    Kristian Høgsberg <krh@bitplanet.net>
  26  */
  27
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <xf86drm.h>
  32 #include <dlfcn.h>
  33
  34 #include "egl_dri2.h"
  35
  36 static int
  37 dri2_drm_authenticate(_EGLDisplay *disp, uint32_t id)
  38 {
  39    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
  40
  41    return drmAuthMagic(dri2_dpy->fd, id);
  42 }
  43
  44 EGLBoolean
  45 dri2_initialize_drm(_EGLDriver *drv, _EGLDisplay *disp)
  46 {
  47    struct dri2_egl_display *dri2_dpy;
  48    int i;
  49
  50    dri2_dpy = malloc(sizeof *dri2_dpy);
  51    if (!dri2_dpy)
  52       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
  53
  54    memset(dri2_dpy, 0, sizeof *dri2_dpy);
  55
  56    disp->DriverData = (void *) dri2_dpy;
  57    dri2_dpy->fd = (int) (intptr_t) disp->PlatformDisplay;
  58
  59    dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
  60    if (dri2_dpy->driver_name == NULL)
  61       return _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
  62
  63    dri2_dpy->device_name = dri2_get_device_name_for_fd(dri2_dpy->fd);
  64    if (dri2_dpy->device_name == NULL) {
  65       _eglError(EGL_BAD_ALLOC, "DRI2: failed to get device name");
  66       goto cleanup_driver_name;
  67    }
  68
  69    if (!dri2_load_driver(disp))
  70       goto cleanup_device_name;
  71
  72    dri2_dpy->extensions[0] = &image_lookup_extension.base;
  73    dri2_dpy->extensions[1] = &use_invalidate.base;
  74    dri2_dpy->extensions[2] = NULL;
  75
  76    if (!dri2_create_screen(disp))
  77       goto cleanup_driver;
  78
  79    for (i = 0; dri2_dpy->driver_configs[i]; i++)
  80       dri2_add_config(disp, dri2_dpy->driver_configs[i], i + 1, 0, 0, NULL);
  81
  82 #ifdef HAVE_WAYLAND_PLATFORM
  83    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
  84 #endif
  85    dri2_dpy->authenticate = dri2_drm_authenticate;
  86
  87    /* we're supporting EGL 1.4 */
  88    disp->VersionMajor = 1;
  89    disp->VersionMinor = 4;
  90
  91    return EGL_TRUE;
  92
  93  cleanup_driver:
  94    dlclose(dri2_dpy->driver);
  95  cleanup_device_name:
  96    free(dri2_dpy->device_name);
  97  cleanup_driver_name:
  98    free(dri2_dpy->driver_name);
  99
 100    return EGL_FALSE;
 101 }