src/gallium/auxiliary/vl/vl_winsys_drm.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2015 Advanced Micro Devices, 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 <assert.h>
  29 #include <fcntl.h>
  30
  31 #include "pipe/p_screen.h"
  32 #include "pipe-loader/pipe_loader.h"
  33 #include "state_tracker/drm_driver.h"
  34
  35 #include "util/u_memory.h"
  36 #include "vl/vl_winsys.h"
  37
  38 static void
  39 vl_drm_screen_destroy(struct vl_screen *vscreen);
  40
  41 struct vl_screen *
  42 vl_drm_screen_create(int fd)
  43 {
  44    struct vl_screen *vscreen;
  45    int new_fd;
  46
  47    vscreen = CALLOC_STRUCT(vl_screen);
  48    if (!vscreen)
  49       return NULL;
  50
  51    if (fd < 0 || (new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3)) < 0)
  52       goto free_screen;
  53
  54    if (pipe_loader_drm_probe_fd(&vscreen->dev, new_fd))
  55       vscreen->pscreen = pipe_loader_create_screen(vscreen->dev);
  56
  57    if (!vscreen->pscreen)
  58       goto release_pipe;
  59
  60    vscreen->destroy = vl_drm_screen_destroy;
  61    vscreen->texture_from_drawable = NULL;
  62    vscreen->get_dirty_area = NULL;
  63    vscreen->get_timestamp = NULL;
  64    vscreen->set_next_timestamp = NULL;
  65    vscreen->get_private = NULL;
  66    return vscreen;
  67
  68 release_pipe:
  69    if (vscreen->dev)
  70       pipe_loader_release(&vscreen->dev, 1);
  71    else
  72       close(new_fd);
  73
  74 free_screen:
  75    FREE(vscreen);
  76    return NULL;
  77 }
  78
  79 static void
  80 vl_drm_screen_destroy(struct vl_screen *vscreen)
  81 {
  82    assert(vscreen);
  83
  84    vscreen->pscreen->destroy(vscreen->pscreen);
  85    pipe_loader_release(&vscreen->dev, 1);
  86    FREE(vscreen);
  87 }