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intr.h revision 1.2 
      1 /*	$NetBSD: intr.h,v 1.2 1996/05/12 23:06:06 mycroft Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1996 Charles M. Hannum.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Charles M. Hannum.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /* Interrupt priority `levels'; not mutually exclusive. */
     33 #define	IPL_BIO		0	/* block I/O */
     34 #define	IPL_NET		1	/* network */
     35 #define	IPL_TTY		2	/* terminal */
     36 #define	IPL_CLOCK	3	/* clock */
     37 #define	IPL_IMP		4	/* memory allocation */
     38 #define	IPL_NONE	5	/* nothing */
     39 #define	IPL_HIGH	6	/* everything */
     40 
     41 /* Interrupt sharing types. */
     42 #define	IST_NONE	0	/* none */
     43 #define	IST_PULSE	1	/* pulsed */
     44 #define	IST_EDGE	2	/* edge-triggered */
     45 #define	IST_LEVEL	3	/* level-triggered */
     46