src/gallium/drivers/identity/id_drm.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "state_tracker/drm_api.h"
  29
  30 #include "util/u_memory.h"
  31 #include "id_drm.h"
  32 #include "id_screen.h"
  33 #include "id_public.h"
  34 #include "id_objects.h"
  35
  36 struct identity_drm_api
  37 {
  38    struct drm_api base;
  39
  40    struct drm_api *api;
  41 };
  42
  43 static INLINE struct identity_drm_api *
  44 identity_drm_api(struct drm_api *_api)
  45 {
  46    return (struct identity_drm_api *)_api;
  47 }
  48
  49 static struct pipe_screen *
  50 identity_drm_create_screen(struct drm_api *_api, int fd,
  51                            struct drm_create_screen_arg *arg)
  52 {
  53    struct identity_drm_api *id_api = identity_drm_api(_api);
  54    struct drm_api *api = id_api->api;
  55    struct pipe_screen *screen;
  56
  57    if (arg && arg->mode != DRM_CREATE_NORMAL)
  58       return NULL;
  59
  60    screen = api->create_screen(api, fd, arg);
  61
  62    return identity_screen_create(screen);
  63 }
  64
  65 static void
  66 identity_drm_destroy(struct drm_api *_api)
  67 {
  68    struct identity_drm_api *id_api = identity_drm_api(_api);
  69    struct drm_api *api = id_api->api;
  70    api->destroy(api);
  71
  72    free(id_api);
  73 }
  74
  75 struct drm_api *
  76 identity_drm_create(struct drm_api *api)
  77 {
  78    struct identity_drm_api *id_api;
  79
  80    if (!api)
  81       goto error;
  82
  83    id_api = CALLOC_STRUCT(identity_drm_api);
  84
  85    if (!id_api)
  86       goto error;
  87
  88    id_api->base.name = api->name;
  89    id_api->base.driver_name = api->driver_name;
  90    id_api->base.create_screen = identity_drm_create_screen;
  91    id_api->base.destroy = identity_drm_destroy;
  92    id_api->api = api;
  93
  94    return &id_api->base;
  95
  96 error:
  97    return api;
  98 }