src/gallium/winsys/drm/vmware/xorg/vmw_screen.c

   1 /**********************************************************
   2  * Copyright 2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the 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 HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 /**
  27  * @file
  28  * Contains the init code for the VMware Xorg driver.
  29  *
  30  * @author Jakob Bornecrantz <jakob@vmware.com>
  31  */
  32
  33 #include "vmw_hook.h"
  34 #include "vmw_driver.h"
  35
  36 static Bool
  37 vmw_screen_init(ScrnInfoPtr pScrn)
  38 {
  39     modesettingPtr ms = modesettingPTR(pScrn);
  40     struct vmw_driver *vmw;
  41
  42     /* if gallium is used then we don't need to do anything. */
  43     if (ms->screen)
  44         return TRUE;
  45
  46     vmw = xnfcalloc(sizeof(*vmw), 1);
  47     if (!vmw)
  48         return FALSE;
  49
  50     vmw->fd = ms->fd;
  51     ms->winsys_priv = vmw;
  52
  53     return TRUE;
  54 }
  55
  56 static Bool
  57 vmw_screen_close(ScrnInfoPtr pScrn)
  58 {
  59     modesettingPtr ms = modesettingPTR(pScrn);
  60     struct vmw_driver *vmw = vmw_driver(pScrn);
  61
  62     if (!vmw)
  63         return TRUE;
  64
  65     ms->winsys_priv = NULL;
  66     xfree(vmw);
  67
  68     return TRUE;
  69 }
  70
  71 /*
  72  * Functions for setting up hooks into the xorg state tracker
  73  */
  74
  75 static Bool (*vmw_screen_pre_init_saved)(ScrnInfoPtr pScrn, int flags) = NULL;
  76
  77 static Bool
  78 vmw_screen_pre_init(ScrnInfoPtr pScrn, int flags)
  79 {
  80     modesettingPtr ms;
  81
  82     pScrn->PreInit = vmw_screen_pre_init_saved;
  83     if (!pScrn->PreInit(pScrn, flags))
  84         return FALSE;
  85
  86     ms = modesettingPTR(pScrn);
  87     ms->winsys_screen_init = vmw_screen_init;
  88     ms->winsys_screen_close = vmw_screen_close;
  89
  90     return TRUE;
  91 }
  92
  93 void
  94 vmw_screen_set_functions(ScrnInfoPtr pScrn)
  95 {
  96     assert(!vmw_screen_pre_init_saved);
  97
  98     vmw_screen_pre_init_saved = pScrn->PreInit;
  99     pScrn->PreInit = vmw_screen_pre_init;
 100 }