Split pc98 support into pc98/pc98/nmi.c.

1 files changed, 78 insertions, 0 deletions

diff --git a/sys/pc98/cbus/nmi.c b/sys/pc98/cbus/nmi.c
new file mode 100644
index 0000000..2ebd868
--- /dev/null
+++ b/sys/pc98/cbus/nmi.c
@@ -0,0 +1,78 @@
+/*-
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 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("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/syslog.h>
+#include <sys/systm.h>
+
+#include <machine/md_var.h>
+
+#include <pc98/pc98/epsonio.h>
+#include <pc98/pc98/pc98_machdep.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 (epson_machine_id == 0x20)
+		epson_outb(0xc16, epson_inb(0xc16) | 0x1);
+	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);
+}