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/*-
* Copyright (c) 1991 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/pc98/cbus/nmi.c 150127 2005-09-14 12:39:06Z nyan $");
#include <sys/types.h>
#include <sys/syslog.h>
#include <sys/systm.h>
#include <machine/md_var.h>
#define NMI_PARITY 0x04
#define NMI_EPARITY 0x02
/*
* Handle a NMI, possibly a machine check.
* return true to panic system, false to ignore.
*/
int
isa_nmi(int cd)
{
int retval = 0;
int port = inb(0x33);
log(LOG_CRIT, "NMI PC98 port = %x\n", port);
if (port & NMI_PARITY) {
log(LOG_CRIT, "BASE RAM parity error, likely hardware failure.");
retval = 1;
} else if (port & NMI_EPARITY) {
log(LOG_CRIT, "EXTENDED RAM parity error, likely hardware failure.");
retval = 1;
} else {
log(LOG_CRIT, "\nNMI Resume ??\n");
}
return(retval);
}