#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <sys/types.h>
#if defined(i386) || defined(__x86)
#define _NEED_SYSI86
#endif
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#ifndef MAP_FAILED
#define MAP_FAILED ((void *)-1)
#endif
char *apertureDevName = NULL;
_X_EXPORT 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;
}
_X_EXPORT pointer
xf86MapVidMem(int ScreenNum, int Flags, unsigned long Base, unsigned long Size)
{
pointer base;
int fd;
char vtname[20];
#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);
}
_X_EXPORT void
xf86UnMapVidMem(int ScreenNum, pointer Base, unsigned long Size)
{
munmap(Base, Size);
}
#if defined(i386) || defined(__x86)
static Bool ExtendedEnabled = FALSE;
#endif
_X_EXPORT Bool
xf86EnableIO(void)
{
#if defined(i386) || defined(__x86)
if (ExtendedEnabled)
return TRUE;
if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0) {
xf86Msg(X_WARNING,"xf86EnableIOPorts: Failed to set IOPL for I/O\n");
return FALSE;
}
ExtendedEnabled = TRUE;
#endif
return TRUE;
}
_X_EXPORT void
xf86DisableIO(void)
{
#if defined(i386) || defined(__x86)
if(!ExtendedEnabled)
return;
sysi86(SI86V86, V86SC_IOPL, 0);
ExtendedEnabled = FALSE;
#endif
}
_X_EXPORT Bool xf86DisableInterrupts(void)
{
#if defined(i386) || defined(__x86)
if (!ExtendedEnabled && (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0))
return FALSE;
#ifdef __GNUC__
__asm__ __volatile__("cli");
#else
asm("cli");
#endif
if (!ExtendedEnabled)
sysi86(SI86V86, V86SC_IOPL, 0);
#endif
return TRUE;
}
_X_EXPORT void xf86EnableInterrupts(void)
{
#if defined(i386) || defined(__x86)
if (!ExtendedEnabled && (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0))
return;
#ifdef __GNUC__
__asm__ __volatile__("sti");
#else
asm("sti");
#endif
if (!ExtendedEnabled)
sysi86(SI86V86, V86SC_IOPL, 0);
#endif
}
_X_EXPORT void
xf86MapReadSideEffects(int ScreenNum, int Flags, pointer Base,
unsigned long Size)
{
}
_X_EXPORT Bool
xf86CheckMTRR(int ScreenNum)
{
return FALSE;
}