icu: Split out icu/icu.c
[dragonfly.git] / sys / platform / pc64 / isa / intr_machdep.c
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1/*-
2 * Copyright (c) 1991 The Regents of the University of California.
3 * Copyright (c) 2008 The DragonFly Project.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * William Jolitz.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * from: @(#)isa.c 7.2 (Berkeley) 5/13/91
38 * $FreeBSD: src/sys/i386/isa/intr_machdep.c,v 1.29.2.5 2001/10/14 06:54:27 luigi Exp $
39 * $DragonFly: src/sys/platform/pc64/isa/intr_machdep.c,v 1.1 2008/08/29 17:07:19 dillon Exp $
40 */
41/*
42 * This file contains an aggregated module marked:
43 * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
44 * All rights reserved.
45 * See the notice for details.
46 */
47
48#include "use_isa.h"
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49
50#include <sys/param.h>
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51#include <sys/systm.h>
52#include <sys/syslog.h>
1b505979 53#include <sys/bus.h>
c8fe38ae 54#include <bus/isa/isavar.h>
c8fe38ae 55
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56#include <machine_base/icu/icu_var.h>
57#include <machine_base/isa/intr_machdep.h>
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58
59#define NMI_PARITY (1 << 7)
60#define NMI_IOCHAN (1 << 6)
61#define ENMI_WATCHDOG (1 << 7)
62#define ENMI_BUSTIMER (1 << 6)
63#define ENMI_IOSTATUS (1 << 5)
64
65/*
66 * Handle a NMI, possibly a machine check.
67 * return true to panic system, false to ignore.
68 */
69int
70isa_nmi(int cd)
71{
72 int retval = 0;
73 int isa_port = inb(0x61);
74 int eisa_port = inb(0x461);
75
76 log(LOG_CRIT, "NMI ISA %x, EISA %x\n", isa_port, eisa_port);
77
78 if (isa_port & NMI_PARITY) {
79 log(LOG_CRIT, "RAM parity error, likely hardware failure.");
80 retval = 1;
81 }
82
83 if (isa_port & NMI_IOCHAN) {
84 log(LOG_CRIT, "I/O channel check, likely hardware failure.");
85 retval = 1;
86 }
87
88 /*
89 * On a real EISA machine, this will never happen. However it can
90 * happen on ISA machines which implement XT style floating point
91 * error handling (very rare). Save them from a meaningless panic.
92 */
93 if (eisa_port == 0xff)
94 return(retval);
95
96 if (eisa_port & ENMI_WATCHDOG) {
97 log(LOG_CRIT, "EISA watchdog timer expired, likely hardware failure.");
98 retval = 1;
99 }
100
101 if (eisa_port & ENMI_BUSTIMER) {
102 log(LOG_CRIT, "EISA bus timeout, likely hardware failure.");
103 retval = 1;
104 }
105
106 if (eisa_port & ENMI_IOSTATUS) {
107 log(LOG_CRIT, "EISA I/O port status error.");
108 retval = 1;
109 }
110 return(retval);
111}
112
113/*
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114 * Fill in default interrupt table (in case of spurious interrupt
115 * during configuration of kernel, setup interrupt control unit
116 */
117void
118isa_defaultirq(void)
119{
1b505979 120 icu_definit();
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121}
122
123#if NISA > 0
1b505979 124
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125intrmask_t
126isa_irq_pending(void)
127{
1b505979 128 return icu_irq_pending();
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129}
130
131#endif