xserver

xserver with xephyr scale patch
git clone https://git.neptards.moe/u3shit/xserver.git
Log | Files | Refs | README | LICENSE

sun_vid.c (4038B)

      1 /*
      2  * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
      3  * Copyright 1993 by David Wexelblat <dwex@goblin.org>
      4  * Copyright 1999 by David Holland <davidh@iquest.net>
      5  *
      6  * Permission to use, copy, modify, distribute, and sell this software and its
      7  * documentation for any purpose is hereby granted without fee, provided that
      8  * the above copyright notice appear in all copies and that both that copyright
      9  * notice and this permission notice appear in supporting documentation, and
     10  * that the names of the copyright holders not be used in advertising or
     11  * publicity pertaining to distribution of the software without specific,
     12  * written prior permission.  The copyright holders make no representations
     13  * about the suitability of this software for any purpose.  It is provided "as
     14  * is" without express or implied warranty.
     15  *
     16  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
     17  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT
     18  * SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
     19  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
     20  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
     21  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
     22  * OF THIS SOFTWARE.
     23  *
     24  */
     25 /* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
     26  *
     27  * Permission is hereby granted, free of charge, to any person obtaining a
     28  * copy of this software and associated documentation files (the "Software"),
     29  * to deal in the Software without restriction, including without limitation
     30  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     31  * and/or sell copies of the Software, and to permit persons to whom the
     32  * Software is furnished to do so, subject to the following conditions:
     33  *
     34  * The above copyright notice and this permission notice (including the next
     35  * paragraph) shall be included in all copies or substantial portions of the
     36  * Software.
     37  *
     38  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     39  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     40  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     41  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     42  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     43  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     44  * DEALINGS IN THE SOFTWARE.
     45  */
     46 
     47 #ifdef HAVE_XORG_CONFIG_H
     48 #include <xorg-config.h>
     49 #endif
     50 
     51 #include <sys/types.h>          /* get __x86 definition if not set by compiler */
     52 
     53 #if defined(__i386__) || defined(__i386) || defined(__x86)
     54 #define _NEED_SYSI86
     55 #endif
     56 #include "xf86.h"
     57 #include "xf86Priv.h"
     58 #include "xf86_OSlib.h"
     59 #include "xf86OSpriv.h"
     60 #include <sys/mman.h>
     61 
     62 /***************************************************************************/
     63 /* Video Memory Mapping section 					   */
     64 /***************************************************************************/
     65 
     66 _X_HIDDEN void
     67 xf86OSInitVidMem(VidMemInfoPtr pVidMem)
     68 {
     69     pVidMem->initialised = TRUE;
     70 }
     71 
     72 /***************************************************************************/
     73 /* I/O Permissions section						   */
     74 /***************************************************************************/
     75 
     76 void
     77 xf86OSInputThreadInit(void)
     78 {
     79     /*
     80      * Need to enable in input thread as well, as Solaris kernel tracks
     81      * IOPL per-thread and doesn't inherit when creating a new thread.
     82      */
     83     xf86EnableIO();
     84 }
     85 
     86 Bool
     87 xf86EnableIO(void)
     88 {
     89 #if defined(__i386__) || defined(__i386) || defined(__x86)
     90     if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0) {
     91         xf86Msg(X_WARNING, "xf86EnableIOPorts: Failed to set IOPL for I/O\n");
     92         return FALSE;
     93     }
     94 #endif                          /* i386 */
     95     return TRUE;
     96 }
     97 
     98 void
     99 xf86DisableIO(void)
    100 {
    101 #if defined(__i386__) || defined(__i386) || defined(__x86)
    102     sysi86(SI86V86, V86SC_IOPL, 0);
    103 #endif                          /* i386 */
    104 }