icu.h revision 121985
1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)icu.h 5.6 (Berkeley) 5/9/91 37 * $FreeBSD: head/sys/i386/isa/icu.h 121985 2003-11-03 21:34:45Z jhb $ 38 */ 39 40/* 41 * AT/386 Interrupt Control constants 42 * W. Jolitz 8/89 43 */ 44 45#ifndef _I386_ISA_ICU_H_ 46#define _I386_ISA_ICU_H_ 47 48/* 49 * Interrupt enable bits - in normal order of priority (which we change) 50 */ 51#ifdef PC98 52#define IRQ0 0x0001 53#define IRQ1 0x0002 54#define IRQ2 0x0004 55#define IRQ3 0x0008 56#define IRQ4 0x0010 57#define IRQ5 0x0020 58#define IRQ6 0x0040 59#define IRQ7 0x0080 60#define IRQ_SLAVE 0x0080 61#define IRQ8 0x0100 62#define IRQ9 0x0200 63#define IRQ10 0x0400 64#define IRQ11 0x0800 65#define IRQ12 0x1000 66#define IRQ13 0x2000 67#define IRQ14 0x4000 68#define IRQ15 0x8000 69#else 70#define IRQ0 0x0001 /* highest priority - timer */ 71#define IRQ1 0x0002 72#define IRQ_SLAVE 0x0004 73#define IRQ8 0x0100 74#define IRQ9 0x0200 75#define IRQ2 IRQ9 76#define IRQ10 0x0400 77#define IRQ11 0x0800 78#define IRQ12 0x1000 79#define IRQ13 0x2000 80#define IRQ14 0x4000 81#define IRQ15 0x8000 82#define IRQ3 0x0008 /* this is highest after rotation */ 83#define IRQ4 0x0010 84#define IRQ5 0x0020 85#define IRQ6 0x0040 86#define IRQ7 0x0080 /* lowest - parallel printer */ 87#endif 88 89/* 90 * Interrupt Control offset into Interrupt descriptor table (IDT) 91 */ 92#define ICU_OFFSET 32 /* 0-31 are processor exceptions */ 93#define ICU_LEN 16 /* 32-47 are ISA interrupts */ 94 95#ifdef PC98 96#define ICU_IMR_OFFSET 2 97#define ICU_SLAVEID 7 98#else 99#define ICU_IMR_OFFSET 1 100#define ICU_SLAVEID 2 101#endif 102 103#define ICU_EOI 0x20 104#define HWI_MASK 0xffff /* bits for h/w interrupts */ 105 106#ifndef LOCORE 107void atpic_sched_ithd(struct intrframe iframe); 108void atpic_startup(void); 109#endif 110 111#endif /* !_I386_ISA_ICU_H_ */ 112