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 _EGLImage *
  37 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
  38                              EGLClientBuffer buffer, const EGLint *attr_list)
  39 {
  40    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
  41    struct gbm_dri_bo *dri_bo = gbm_dri_bo((struct gbm_bo *) buffer);
  42    struct dri2_egl_image *dri2_img;
  43
  44    dri2_img = malloc(sizeof *dri2_img);
  45    if (!dri2_img) {
  46       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
  47       return NULL;
  48    }
  49
  50    if (!_eglInitImage(&dri2_img->base, disp)) {
  51       free(dri2_img);
  52       return NULL;
  53    }
  54
  55    dri2_img->dri_image = dri2_dpy->image->dupImage(dri_bo->image, dri2_img);
  56    if (dri2_img->dri_image == NULL) {
  57       free(dri2_img);
  58       _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
  59       return NULL;
  60    }
  61
  62    return &dri2_img->base;
  63 }
  64
  65 static _EGLImage *
  66 dri2_drm_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
  67                           _EGLContext *ctx, EGLenum target,
  68                           EGLClientBuffer buffer, const EGLint *attr_list)
  69 {
  70    (void) drv;
  71
  72    switch (target) {
  73    case EGL_NATIVE_PIXMAP_KHR:
  74       return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
  75    default:
  76       return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
  77    }
  78 }
  79
  80 static int
  81 dri2_drm_authenticate(_EGLDisplay *disp, uint32_t id)
  82 {
  83    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
  84
  85    return drmAuthMagic(dri2_dpy->fd, id);
  86 }
  87
  88 EGLBoolean
  89 dri2_initialize_drm(_EGLDriver *drv, _EGLDisplay *disp)
  90 {
  91    struct dri2_egl_display *dri2_dpy;
  92    struct gbm_device *gbm;
  93    int i;
  94
  95    dri2_dpy = malloc(sizeof *dri2_dpy);
  96    if (!dri2_dpy)
  97       return _eglError(EGL_BAD_ALLOC, "eglInitialize");
  98
  99    memset(dri2_dpy, 0, sizeof *dri2_dpy);
 100
 101    disp->DriverData = (void *) dri2_dpy;
 102
 103    gbm = (struct gbm_device *) disp->PlatformDisplay;
 104    if (strcmp(gbm_device_get_backend_name(gbm), "drm") != 0) {
 105       free(dri2_dpy);
 106       return EGL_FALSE;
 107    }
 108
 109    dri2_dpy->gbm_dri = gbm_dri_device(gbm);
 110    if (dri2_dpy->gbm_dri->base.type != GBM_DRM_DRIVER_TYPE_DRI) {
 111       free(dri2_dpy);
 112       return EGL_FALSE;
 113    }
 114
 115    dri2_dpy->fd = gbm_device_get_fd(gbm);
 116    dri2_dpy->device_name = dri2_get_device_name_for_fd(dri2_dpy->fd);
 117    dri2_dpy->driver_name = dri2_dpy->gbm_dri->base.driver_name;
 118
 119    dri2_dpy->dri_screen = dri2_dpy->gbm_dri->screen;
 120    dri2_dpy->core = dri2_dpy->gbm_dri->core;
 121    dri2_dpy->dri2 = dri2_dpy->gbm_dri->dri2;
 122    dri2_dpy->image = dri2_dpy->gbm_dri->image;
 123    dri2_dpy->driver_configs = dri2_dpy->gbm_dri->driver_configs;
 124
 125    dri2_dpy->gbm_dri->lookup_image = dri2_lookup_egl_image;
 126    dri2_dpy->gbm_dri->lookup_user_data = disp;
 127
 128    dri2_setup_screen(disp);
 129
 130    for (i = 0; dri2_dpy->driver_configs[i]; i++)
 131       dri2_add_config(disp, dri2_dpy->driver_configs[i],
 132                       i + 1, 0, 0, NULL);
 133
 134    drv->API.CreateImageKHR = dri2_drm_create_image_khr;
 135
 136 #ifdef HAVE_WAYLAND_PLATFORM
 137    disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
 138 #endif
 139    dri2_dpy->authenticate = dri2_drm_authenticate;
 140
 141    /* we're supporting EGL 1.4 */
 142    disp->VersionMajor = 1;
 143    disp->VersionMinor = 4;
 144
 145    return EGL_TRUE;
 146 }