Introduce the new kernel sub-tree x86 which should contain all the code

shared and generalized between our current amd64, i386 and pc98.

This is just an initial step that should lead to a more complete effort.
For the moment, a very simple porting of cpufreq modules, BIOS calls and
the whole MD specific ISA bus part is added to the sub-tree but ideally
a lot of code might be added and more shared support should grow.

Sponsored by:	Sandvine Incorporated
Reviewed by:	emaste, kib, jhb, imp
Discussed on:	arch
MFC:		3 weeks

1 files changed, 0 insertions, 107 deletions

diff --git a/sys/i386/isa/nmi.c b/sys/i386/isa/nmi.c
deleted file mode 100644
index db5550c..0000000
--- a/sys/i386/isa/nmi.c
+++ /dev/null
@@ -1,107 +0,0 @@
-/*-
- * 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("$FreeBSD$");
-
-#include "opt_mca.h"
-
-#include <sys/types.h>
-#include <sys/syslog.h>
-#include <sys/systm.h>
-
-#include <machine/md_var.h>
-
-#ifdef DEV_MCA
-#include <i386/bios/mca_machdep.h>
-#endif
-
-#define NMI_PARITY (1 << 7)
-#define NMI_IOCHAN (1 << 6)
-#define ENMI_WATCHDOG (1 << 7)
-#define ENMI_BUSTIMER (1 << 6)
-#define ENMI_IOSTATUS (1 << 5)
-
-/*
- * Handle a NMI, possibly a machine check.
- * return true to panic system, false to ignore.
- */
-int
-isa_nmi(int cd)
-{
-	int retval = 0;
-	int isa_port = inb(0x61);
-	int eisa_port = inb(0x461);
-
-	log(LOG_CRIT, "NMI ISA %x, EISA %x\n", isa_port, eisa_port);
-#ifdef DEV_MCA
-	if (MCA_system && mca_bus_nmi())
-		return(0);
-#endif
-	
-	if (isa_port & NMI_PARITY) {
-		log(LOG_CRIT, "RAM parity error, likely hardware failure.");
-		retval = 1;
-	}
-
-	if (isa_port & NMI_IOCHAN) {
-		log(LOG_CRIT, "I/O channel check, likely hardware failure.");
-		retval = 1;
-	}
-
-	/*
-	 * On a real EISA machine, this will never happen.  However it can
-	 * happen on ISA machines which implement XT style floating point
-	 * error handling (very rare).  Save them from a meaningless panic.
-	 */
-	if (eisa_port == 0xff)
-		return(retval);
-
-	if (eisa_port & ENMI_WATCHDOG) {
-		log(LOG_CRIT, "EISA watchdog timer expired, likely hardware failure.");
-		retval = 1;
-	}
-
-	if (eisa_port & ENMI_BUSTIMER) {
-		log(LOG_CRIT, "EISA bus timeout, likely hardware failure.");
-		retval = 1;
-	}
-
-	if (eisa_port & ENMI_IOSTATUS) {
-		log(LOG_CRIT, "EISA I/O port status error.");
-		retval = 1;
-	}
-
-	return(retval);
-}