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/* $XConsortium$ */
/*
* Copyright 1993 by David McCullough <davidm@stallion.oz.au>
* 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 David McCullough and David Wexelblat
* not be used in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. David McCullough and
* David Wexelblat makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* DAVID MCCULLOUGH AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL DAVID MCCULLOUGH OR DAVID WEXELBLAT 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.
*
*/
#include "X.h"
#include "input.h"
#include "scrnintstr.h"
#define _NEED_SYSI86
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
/***************************************************************************/
/* Video Memory Mapping section */
/***************************************************************************/
static struct kd_memloc MapDSC[MAXSCREENS][NUM_REGIONS];
static int ver_once = 1;
/***************************************************************************/
/*
* To map the video-memory, we use the MAP_CLASS ioctl.
* Different drivers may have to do another one of these
* for their own special registers (ie., ATI). To find
* out which strings are valid look in /etc/conf/pack.d/cn/class.h
*
* if we fail to find one of these we try for the dmmap driver
*/
struct {
unsigned long base, size;
char *class;
} SCO_Mapping[] = {
{0xA0000, 0x10000, "SVGA"},
{0xB0000, 0x08000, "HGA"},
{0x0, 0x0, ""},
};
/* ARGSUSED */
pointer xf86MapVidMem(ScreenNum, Region, Base, Size)
int ScreenNum;
int Region;
pointer Base;
unsigned long Size;
{
int i;
char *class = (char *)NULL;
pointer base;
for (i=0; SCO_Mapping[i].base != 0; i++)
{
if (((pointer)SCO_Mapping[i].base == Base) &&
(SCO_Mapping[i].size == Size))
{
class = SCO_Mapping[i].class;
break;
}
}
if (class == (char *)NULL)
{
int fd;
MapDSC[ScreenNum][Region].vaddr = (char *) NULL;
MapDSC[ScreenNum][Region].physaddr = (char *) Base;
MapDSC[ScreenNum][Region].length = Size;
MapDSC[ScreenNum][Region].ioflg = 1;
if ((fd = open("/dev/dmmap", O_RDWR)) >= 0) {
if (ioctl(fd, KDMAPDISP, &MapDSC[ScreenNum][Region]) == -1)
ErrorF("xf86MapVidMem: dmmap KDMAPDISP failed (%s)\n",
strerror(errno));
else {
if (ver_once)
ErrorF("Using dmmap version 0x%04x.\n",
ioctl(fd, -1));
ver_once = 0;
close(fd);
return(MapDSC[ScreenNum][Region].vaddr);
}
close(fd);
}
FatalError("xf86MapVidMem:No class map defined for (%x,%x)\n",
Base, Size);
/* NOTREACHED */
}
base = (pointer)ioctl(xf86Info.consoleFd, MAP_CLASS, class);
if ((int)base == -1)
{
FatalError("xf86MapVidMem:Failed to map video mem class %s\n",
class);
/* NOTREACHED */
}
return(base);
}
/*
* Nothing to do here if it wasn't mapped using the dmmap driver
*/
/* ARGSUSED */
void xf86UnMapVidMem(ScreenNum, Region, Base, Size)
int ScreenNum;
int Region;
pointer Base;
unsigned long Size;
{
int fd;
if (MapDSC[ScreenNum][Region].vaddr) {
if ((fd = open("/dev/dmmap", O_RDWR)) < 0) {
if (ioctl(fd, KDUNMAPDISP, &MapDSC[ScreenNum][Region]) == -1)
ErrorF("xf86UnMapVidMem: dmmap KDUNMAPDISP failed (%s)\n",
strerror(errno));
close(fd);
}
MapDSC[ScreenNum][Region].vaddr = (char *) NULL;
MapDSC[ScreenNum][Region].physaddr = (char *) NULL;
MapDSC[ScreenNum][Region].length = 0;
MapDSC[ScreenNum][Region].ioflg = 0;
}
return;
}
/* ARGSUSED */
Bool xf86LinearVidMem()
{
int fd, ver;
if ((fd = open("/dev/dmmap", O_RDWR)) >= 0) {
ver = ioctl(fd, -1);
close(fd);
if (ver >= 0) {
if (ver_once)
ErrorF("Using dmmap version 0x%04x.\n", ver);
ver_once = 0;
return(TRUE);
}
}
return(FALSE);
}
/***************************************************************************/
/* I/O Permissions section */
/***************************************************************************/
static Bool ScreenEnabled[MAXSCREENS];
static Bool IOEnabled = FALSE;
static Bool InitDone = FALSE;
void xf86ClearIOPortList(ScreenNum)
int ScreenNum;
{
int i;
if (!InitDone)
{
for (i = 0; i < MAXSCREENS; i++)
ScreenEnabled[i] = FALSE;
InitDone = TRUE;
}
}
/* ARGSUSED */
void xf86AddIOPorts(ScreenNum, NumPorts, Ports)
int ScreenNum;
int NumPorts;
unsigned *Ports;
{
}
void xf86EnableIOPorts(ScreenNum)
int ScreenNum;
{
ScreenEnabled[ScreenNum] = TRUE;
if (IOEnabled)
return;
if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0)
FatalError("Failed to set IOPL for extended I/O\n");
IOEnabled = TRUE;
return;
}
void xf86DisableIOPorts(ScreenNum)
int ScreenNum;
{
int i;
ScreenEnabled[ScreenNum] = FALSE;
if (!IOEnabled)
return;
for (i = 0; i < MAXSCREENS; i++)
if (ScreenEnabled[i])
return;
sysi86(SI86V86, V86SC_IOPL, 0);
IOEnabled = FALSE;
return;
}
void xf86DisableIOPrivs()
{
if (IOEnabled)
sysi86(SI86V86, V86SC_IOPL, 0);
return;
}
/***************************************************************************/
/* Interrupt Handling section */
/***************************************************************************/
Bool xf86DisableInterrupts()
{
#ifdef __GNUC__
__asm__ __volatile__("cli");
#else
asm("cli");
#endif /* __GNUC__ */
return(TRUE);
}
void xf86EnableInterrupts()
{
#ifdef __GNUC__
__asm__ __volatile__("sti");
#else
asm("sti");
#endif /* __GNUC__ */
return;
}
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