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/* $OpenBSD: icu.h,v 1.8 2003/06/02 23:27:47 millert Exp $ */
/* $NetBSD: icu.h,v 1.19 1996/02/01 22:31:21 mycroft Exp $ */
/*-
* Copyright (c) 1990 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.
* 3. 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.
*
* @(#)icu.h 5.6 (Berkeley) 5/9/91
*/
/*
* AT/386 Interrupt Control constants
* W. Jolitz 8/89
*/
#ifndef _I386_ISA_ICU_H_
#define _I386_ISA_ICU_H_
#ifndef _LOCORE
/*
* Interrupt "level" mechanism variables, masks, and macros
*/
extern unsigned imen; /* interrupt mask enable */
#define SET_ICUS() (outb(IO_ICU1 + 1, imen), outb(IO_ICU2 + 1, imen >> 8))
#endif /* !_LOCORE */
/*
* Interrupt enable bits -- in order of priority
*/
#define IRQ_SLAVE 2
/*
* Interrupt Control offset into Interrupt descriptor table (IDT)
* XXX ICU_OFFSET is actually a property of our architecture not of the ICU
* XXX and therefore ought to use the architecture manifest constant IDTVECOFF
* XXX for its definition instead.
*/
#define ICU_OFFSET 32 /* 0-31 are processor exceptions */
#define ICU_LEN 16 /* 32-47 are ISA interrupts */
#endif /* !_I386_ISA_ICU_H_ */
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