195 lines
4.7 KiB
C
195 lines
4.7 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/sunos/sun_vid.c,v 1.4 2004/03/08 15:37:12 tsi Exp $ */
|
|
/*
|
|
* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
|
|
* Copyright 1993 by David Wexelblat <dwex@goblin.org>
|
|
*
|
|
* 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 copyright holders not be used in advertising or
|
|
* publicity pertaining to distribution of the software without specific,
|
|
* written prior permission. The 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 COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT
|
|
* SHALL THE 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 i386
|
|
#define _NEED_SYSI86
|
|
#endif
|
|
#include "xf86.h"
|
|
#include "xf86Priv.h"
|
|
#include "xf86_OSlib.h"
|
|
|
|
#ifndef MAP_FAILED
|
|
#define MAP_FAILED ((void *)-1)
|
|
#endif
|
|
|
|
/***************************************************************************/
|
|
/* Video Memory Mapping section */
|
|
/***************************************************************************/
|
|
|
|
char *apertureDevName = NULL;
|
|
|
|
Bool
|
|
xf86LinearVidMem(void)
|
|
{
|
|
int mmapFd;
|
|
|
|
if (apertureDevName)
|
|
return TRUE;
|
|
|
|
apertureDevName = "/dev/xsvc";
|
|
if ((mmapFd = open(apertureDevName, O_RDWR)) < 0)
|
|
{
|
|
apertureDevName = "/dev/fbs/aperture";
|
|
if((mmapFd = open(apertureDevName, O_RDWR)) < 0)
|
|
{
|
|
xf86MsgVerb(X_WARNING, 0,
|
|
"xf86LinearVidMem: failed to open %s (%s)\n",
|
|
apertureDevName, strerror(errno));
|
|
xf86MsgVerb(X_WARNING, 0,
|
|
"xf86LinearVidMem: either /dev/fbs/aperture or /dev/xsvc"
|
|
" device driver required\n");
|
|
xf86MsgVerb(X_WARNING, 0,
|
|
"xf86LinearVidMem: linear memory access disabled\n");
|
|
apertureDevName = NULL;
|
|
return FALSE;
|
|
}
|
|
}
|
|
close(mmapFd);
|
|
return TRUE;
|
|
}
|
|
|
|
pointer
|
|
xf86MapVidMem(int ScreenNum, int Flags, unsigned long Base, unsigned long Size)
|
|
{
|
|
pointer base;
|
|
int fd;
|
|
|
|
if (!xf86LinearVidMem())
|
|
FatalError("xf86MapVidMem: no aperture device\n");
|
|
|
|
fd = open(apertureDevName,
|
|
(Flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);
|
|
if (fd < 0)
|
|
FatalError("xf86MapVidMem: failed to open %s (%s)\n",
|
|
apertureDevName, strerror(errno));
|
|
|
|
base = mmap(NULL, Size,
|
|
(Flags & VIDMEM_READONLY) ?
|
|
PROT_READ : (PROT_READ | PROT_WRITE),
|
|
MAP_SHARED, fd, (off_t)Base);
|
|
close(fd);
|
|
if (base == MAP_FAILED)
|
|
FatalError("xf86MapVidMem: mmap failure: %s\n",
|
|
strerror(errno));
|
|
|
|
return(base);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
void
|
|
xf86UnMapVidMem(int ScreenNum, pointer Base, unsigned long Size)
|
|
{
|
|
munmap(Base, Size);
|
|
}
|
|
|
|
/***************************************************************************/
|
|
/* I/O Permissions section */
|
|
/***************************************************************************/
|
|
|
|
#ifdef i386
|
|
static Bool ExtendedEnabled = FALSE;
|
|
#endif
|
|
|
|
void
|
|
xf86EnableIO(void)
|
|
{
|
|
#ifdef i386
|
|
if (ExtendedEnabled)
|
|
return;
|
|
|
|
if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0)
|
|
FatalError("xf86EnableIOPorts: Failed to set IOPL for I/O\n");
|
|
|
|
ExtendedEnabled = TRUE;
|
|
#endif /* i386 */
|
|
}
|
|
|
|
void
|
|
xf86DisableIO(void)
|
|
{
|
|
#ifdef i386
|
|
if(!ExtendedEnabled)
|
|
return;
|
|
|
|
sysi86(SI86V86, V86SC_IOPL, 0);
|
|
|
|
ExtendedEnabled = FALSE;
|
|
#endif /* i386 */
|
|
}
|
|
|
|
|
|
/***************************************************************************/
|
|
/* Interrupt Handling section */
|
|
/***************************************************************************/
|
|
|
|
Bool xf86DisableInterrupts(void)
|
|
{
|
|
#ifdef i386
|
|
if (!ExtendedEnabled && (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0))
|
|
return FALSE;
|
|
|
|
#ifdef __GNUC__
|
|
__asm__ __volatile__("cli");
|
|
#else
|
|
asm("cli");
|
|
#endif /* __GNUC__ */
|
|
|
|
if (!ExtendedEnabled)
|
|
sysi86(SI86V86, V86SC_IOPL, 0);
|
|
#endif /* i386 */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void xf86EnableInterrupts(void)
|
|
{
|
|
#ifdef i386
|
|
if (!ExtendedEnabled && (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0))
|
|
return;
|
|
|
|
#ifdef __GNUC__
|
|
__asm__ __volatile__("sti");
|
|
#else
|
|
asm("sti");
|
|
#endif /* __GNUC__ */
|
|
|
|
if (!ExtendedEnabled)
|
|
sysi86(SI86V86, V86SC_IOPL, 0);
|
|
#endif /* i386 */
|
|
}
|
|
|
|
void
|
|
xf86MapReadSideEffects(int ScreenNum, int Flags, pointer Base,
|
|
unsigned long Size)
|
|
{
|
|
}
|
|
|
|
Bool
|
|
xf86CheckMTRR(int ScreenNum)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|