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/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/sunos/sun_vid.c,v 1.2 2001/10/28 03:34:03 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;
char vtname[20];
/*
* Solaris 2.1 x86 SVR4 (10/27/93)
* The server must treat the virtual terminal device file as the
* standard SVR4 /dev/pmem.
*
* Using the /dev/vtXX device as /dev/pmem only works for the
* A0000-FFFFF region - If we wish you mmap the linear aperture
* it requires a device driver.
*
* So what we'll do is use /dev/vtXX for the A0000-FFFFF stuff, and
* try to use the /dev/fbs/aperture or /dev/xsvc driver if the server
* tries to mmap anything > FFFFF. Its very very unlikely that the
* server will try to mmap anything below FFFFF that can't be handled
* by /dev/vtXX.
*
* DWH - 2/23/94
* DWH - 1/31/99 (Gee has it really been 5 years?)
*
* Solaris 2.8 7/26/99
* Use /dev/xsvc for everything
*
* DWH - 7/26/99 - Solaris8/dev/xsvc changes
*
* TSI - 2001.09 - SPARC changes
*/
#if defined(i386) && !defined(__SOL8__)
if(Base < 0xFFFFF)
sprintf(vtname, "/dev/vt%02d", xf86Info.vtno);
else
#endif
{
if (!xf86LinearVidMem())
FatalError("xf86MapVidMem: no aperture device\n");
strcpy(vtname, apertureDevName);
}
fd = open(vtname, (Flags & VIDMEM_READONLY) ? O_RDONLY : O_RDWR);
if (fd < 0)
FatalError("xf86MapVidMem: failed to open %s (%s)\n",
vtname, 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;
}
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