| | 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" |
| | 49 | |
| | 50 | #include <sys/param.h> |
| | 51 | #include <sys/systm.h> |
| | 52 | #include <sys/syslog.h> |
| | 53 | #include <sys/bus.h> |
| | 54 | #include <bus/isa/isavar.h> |
| | 55 | |
| | 56 | #include <machine_base/icu/icu_var.h> |
| | 57 | #include <machine_base/isa/intr_machdep.h> |
| | 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 | */ |
| | 69 | int |
| | 70 | isa_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 | /* |
| | 114 | * Fill in default interrupt table (in case of spurious interrupt |
| | 115 | * during configuration of kernel, setup interrupt control unit |
| | 116 | */ |
| | 117 | void |
| | 118 | isa_defaultirq(void) |
| | 119 | { |
| | 120 | icu_definit(); |
| | 121 | } |
| | 122 | |
| | 123 | #if NISA > 0 |
| | 124 | |
| | 125 | intrmask_t |
| | 126 | isa_irq_pending(void) |
| | 127 | { |
| | 128 | return icu_irq_pending(); |
| | 129 | } |
| | 130 | |
| | 131 | #endif |
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