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pio.h revision 1.1.1.2 
      1 /*	$NetBSD: pio.h,v 1.1.1.2 2000/01/23 20:08:30 soda Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Per Fogelstrom.  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 /*
     33  * I/O macros.
     34  */
     35 
     36 #define	outb(a,v)	(*(volatile unsigned char*)(a) = (v))
     37 #define	outw(a,v)	(*(volatile unsigned short*)(a) = (v))
     38 #define	out16(a,v)	outw(a,v)
     39 #define	outl(a,v)	(*(volatile unsigned int*)(a) = (v))
     40 #define	out32(a,v)	outl(a,v)
     41 #define	inb(a)		(*(volatile unsigned char*)(a))
     42 #define	inw(a)		(*(volatile unsigned short*)(a))
     43 #define	in16(a)		inw(a)
     44 #define	inl(a)		(*(volatile unsigned int*)(a))
     45 #define	in32(a)		inl(a)
     46 
     47