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/*
* Copyright 1990, 1991 by Thomas Roell, Dinkelscherben, Germany
* Copyright 1992 by David Dawes <dawes@XFree86.org>
* Copyright 1992 by Jim Tsillas <jtsilla@damon.ccs.northeastern.edu>
* Copyright 1992 by Rich Murphey <Rich@Rice.edu>
* Copyright 1992 by Robert Baron <Robert.Baron@ernst.mach.cs.cmu.edu>
* Copyright 1992 by Orest Zborowski <obz@eskimo.com>
* Copyright 1993 by Vrije Universiteit, The Netherlands
* Copyright 1993 by David Wexelblat <dwex@XFree86.org>
* Copyright 1994, 1996 by Holger Veit <Holger.Veit@gmd.de>
* Copyright 1997 by Takis Psarogiannakopoulos <takis@dpmms.cam.ac.uk>
* Copyright 1994-2003 by The XFree86 Project, Inc
* Copyright 1999 by David Holland <davidh@iquest.net>
* Copyright 2015 by VMware Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the names of the above listed copyright holders
* not be used in advertising or publicity pertaining to distribution of
* the software without specific, written prior permission. The above listed
* copyright holders make no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* THE ABOVE LISTED COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDERS BE
* LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <stdbool.h>
#if defined(VMMOUSE_OS_BSD)
#include <sys/types.h>
#ifdef USE_I386_IOPL
#include <machine/sysarch.h>
/***************************************************************************/
/* I/O Permissions section */
/***************************************************************************/
static bool ExtendedEnabled = false;
bool
xf86EnableIO()
{
if (ExtendedEnabled)
return true;
if (i386_iopl(1) < 0)
return false;
ExtendedEnabled = true;
return true;
}
void
xf86DisableIO()
{
if (!ExtendedEnabled)
return;
i386_iopl(0);
ExtendedEnabled = false;
return;
}
#endif /* USE_I386_IOPL */
#ifdef USE_AMD64_IOPL
#include <machine/sysarch.h>
/***************************************************************************/
/* I/O Permissions section */
/***************************************************************************/
static bool ExtendedEnabled = false;
bool
xf86EnableIO()
{
if (ExtendedEnabled)
return true;
if (amd64_iopl(1) < 0)
return false;
ExtendedEnabled = true;
return true;
}
void
xf86DisableIO()
{
if (!ExtendedEnabled)
return;
if (amd64_iopl(0) == 0)
ExtendedEnabled = false;
return;
}
#endif /* USE_AMD64_IOPL */
#ifdef USE_DEV_IO
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
static int IoFd = -1;
bool
xf86EnableIO()
{
if (IoFd >= 0)
return true;
if ((IoFd = open("/dev/io", O_RDWR)) == -1)
return false;
return true;
}
void
xf86DisableIO()
{
if (IoFd < 0)
return;
close(IoFd);
IoFd = -1;
return;
}
#endif
#elif defined(VMMOUSE_OS_GENERIC)
static bool ExtendedEnabled = false;
extern int ioperm(unsigned long __from, unsigned long __num, int __turn_on);
extern int iopl(int __level);
bool xf86EnableIO(void)
{
if (ExtendedEnabled)
return true;
if (ioperm(0, 1024, 1) || iopl(3))
return false;
ExtendedEnabled = true;
return true;
}
void
xf86DisableIO(void)
{
if (!ExtendedEnabled)
return;
iopl(0);
ioperm(0, 1024, 0);
ExtendedEnabled = false;
return;
}
#elif defined(VMMOUSE_OS_SOLARIS)
#ifdef __GNUC__
#if defined(__sun) && !defined(sun)
#define sun 1
#endif
#if defined(__SVR4) && !defined(SVR4)
#define SVR4 1
#endif
#endif
/*
* The below sequence of includes is stolen from Xserver. If it doesn't work
* for your setup, please propose a patch to fix it.
*/
#include <sys/types.h>
#include <errno.h>
#if !(defined (sun) && defined (SVR4))
#include <sys/immu.h>
#include <sys/region.h>
#include <sys/proc.h>
#endif
#include <sys/tss.h>
#include <sys/sysi86.h>
#if defined(SVR4) && !defined(sun)
#include <sys/seg.h>
#endif /* SVR4 && !sun */
/* V86SC_IOPL was moved to <sys/sysi86.h> on Solaris 7 and later */
#if !defined(V86SC_IOPL) /* Solaris 7 or later? */
#include <sys/v86.h> /* Nope */
#endif
#if defined(sun) && (defined (__i386__) || defined(__i386) || defined(__x86)) && defined (SVR4)
#include <sys/psw.h>
#endif
static bool ExtendedEnabled = false;
bool
xf86EnableIO(void)
{
if (ExtendedEnabled)
return true;
if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0)
return false;
ExtendedEnabled = true;
return true;
}
void
xf86DisableIO(void)
{
if(!ExtendedEnabled)
return;
sysi86(SI86V86, V86SC_IOPL, 0);
ExtendedEnabled = false;
}
#endif
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