int
sys_sysarch(struct proc *p, void *v, register_t *retval)
{
struct sys_sysarch_args /* {
syscallarg(int) op;
syscallarg(void *) parms;
} */ *uap = v;
int error = 0;
switch(SCARG(uap, op)) {
#if defined(USER_LDT) && 0
case AMD64_GET_LDT:
error = amd64_get_ldt(p, SCARG(uap, parms), retval);
break;
case AMD64_SET_LDT:
error = amd64_set_ldt(p, SCARG(uap, parms), retval);
break;
#endif
case AMD64_IOPL:
error = amd64_iopl(p, SCARG(uap, parms), retval);
break;
#if 0
case AMD64_GET_IOPERM:
error = amd64_get_ioperm(p, SCARG(uap, parms), retval);
break;
case AMD64_SET_IOPERM:
error = amd64_set_ioperm(p, SCARG(uap, parms), retval);
break;
#endif
#ifdef MTRR
case AMD64_GET_MTRR:
error = amd64_get_mtrr(p, SCARG(uap, parms), retval);
break;
case AMD64_SET_MTRR:
error = amd64_set_mtrr(p, SCARG(uap, parms), retval);
break;
#endif
#if defined(PERFCTRS) && 0
case AMD64_PMC_INFO:
error = pmc_info(p, SCARG(uap, parms), retval);
break;
case AMD64_PMC_STARTSTOP:
error = pmc_startstop(p, SCARG(uap, parms), retval);
break;
case AMD64_PMC_READ:
error = pmc_read(p, SCARG(uap, parms), retval);
break;
#endif
default:
error = EINVAL;
break;
}
return (error);
}
void
xf86DisableIO()
{
if (!ExtendedEnabled)
return;
if (amd64_iopl(FALSE) == 0) {
ExtendedEnabled = FALSE;
}
/* Otherwise, the X server has revoqued its root uid,
and thus cannot give up IO privileges any more */
return;
}
void
xf86EnableIO()
{
if (ExtendedEnabled)
return;
if (amd64_iopl(TRUE) < 0)
{
#ifndef __OpenBSD__
FatalError("%s: Failed to set IOPL for extended I/O",
"xf86EnableIO");
#else
FatalError("%s: Failed to set IOPL for extended I/O\n%s",
"xf86EnableIO", SYSCTL_MSG);
#endif
}
ExtendedEnabled = TRUE;
return;
}
Bool
xf86EnableIO()
{
if (ExtendedEnabled)
return TRUE;
if (amd64_iopl(TRUE) < 0) {
#ifndef __OpenBSD__
xf86Msg(X_WARNING, "%s: Failed to set IOPL for extended I/O",
"xf86EnableIO");
#else
xf86Msg(X_WARNING, "%s: Failed to set IOPL for extended I/O\n%s",
"xf86EnableIO", SYSCTL_MSG);
#endif
return FALSE;
}
ExtendedEnabled = TRUE;
return TRUE;
}