1 /* $OpenBSD: icu.h,v 1.8 2003/06/02 23:27:47 millert Exp $ */ 2 /* $NetBSD: icu.h,v 1.19 1996/02/01 22:31:21 mycroft Exp $ */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)icu.h 5.6 (Berkeley) 5/9/91 36 */ 37 38 /* 39 * AT/386 Interrupt Control constants 40 * W. Jolitz 8/89 41 */ 42 43 #ifndef _I386_ISA_ICU_H_ 44 #define _I386_ISA_ICU_H_ 45 46 #ifndef _LOCORE 47 48 /* 49 * Interrupt "level" mechanism variables, masks, and macros 50 */ 51 extern unsigned imen; /* interrupt mask enable */ 52 53 #define SET_ICUS() (outb(IO_ICU1 + 1, imen), outb(IO_ICU2 + 1, imen >> 8)) 54 55 #endif /* !_LOCORE */ 56 57 /* 58 * Interrupt enable bits -- in order of priority 59 */ 60 #define IRQ_SLAVE 2 61 62 /* 63 * Interrupt Control offset into Interrupt descriptor table (IDT) 64 * XXX ICU_OFFSET is actually a property of our architecture not of the ICU 65 * XXX and therefore ought to use the architecture manifest constant IDTVECOFF 66 * XXX for its definition instead. 67 */ 68 #define ICU_OFFSET 32 /* 0-31 are processor exceptions */ 69 #define ICU_LEN 16 /* 32-47 are ISA interrupts */ 70 71 #endif /* !_I386_ISA_ICU_H_ */ 72