/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code 
 * as defined in and that are subject to the Apple Public Source License 
 * Version 2.0 (the 'License'). You may not use this file except in 
 * compliance with the License.  The rights granted to you under the 
 * License may not be used to create, or enable the creation or 
 * redistribution of, unlawful or unlicensed copies of an Apple operating 
 * system, or to circumvent, violate, or enable the circumvention or 
 * violation of, any terms of an Apple operating system software license 
 * agreement.
 *
 * Please obtain a copy of the License at 
 * http://www.opensource.apple.com/apsl/ and read it before using this 
 * file.
 *
 * The Original Code and all software distributed under the License are 
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * Please see the License for the specific language governing rights and 
 * limitations under the License.
 *
 * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991,1990 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */
/* 
 */
#ifndef I386_PIO_H
#define I386_PIO_H
#include <mach_assert.h>

typedef unsigned short i386_ioport_t;

/* read a longword */
extern unsigned long	inl(
				i386_ioport_t	port);
/* read a shortword */
extern unsigned short	inw(
				i386_ioport_t	port);
/* read a byte */
extern unsigned char	inb(
				i386_ioport_t	port);
/* write a longword */
extern void		outl(
				i386_ioport_t	port,
				unsigned long	datum);
/* write a word */
extern void		outw(
				i386_ioport_t	port,
				unsigned short	datum);
/* write a longword */
extern void		outb(
				i386_ioport_t	port,
				unsigned char	datum);

/* input an array of longwords */
extern void		linl(
				i386_ioport_t	port,
				int		* data,
				int		count);
/* output an array of longwords */
extern void		loutl(
				i386_ioport_t	port,
				int		* data,
				int		count);

/* input an array of words */
extern void		linw(
				i386_ioport_t	port,
				int		* data,
				int		count);
/* output an array of words */
extern void		loutw(
				i386_ioport_t	port,
				int		* data,
				int		count);

/* input an array of bytes */
extern void		linb(
				i386_ioport_t	port,
				char		* data,
				int		count);
/* output an array of bytes */
extern void		loutb(
				i386_ioport_t	port,
				char		* data,
				int		count);

#if defined(__GNUC__) && (!MACH_ASSERT)
extern __inline__ unsigned long	inl(
				i386_ioport_t port)
{
	unsigned long datum;
	__asm__ volatile("inl %1, %0" : "=a" (datum) : "d" (port));
	return(datum);
}

extern __inline__ unsigned short inw(
				i386_ioport_t port)
{
	unsigned short datum;
	__asm__ volatile(".byte 0x66; inl %1, %0" : "=a" (datum) : "d" (port));
	return(datum);
}

extern __inline__ unsigned char inb(
				i386_ioport_t port)
{
	unsigned char datum;
	__asm__ volatile("inb %1, %0" : "=a" (datum) : "d" (port));
	return(datum);
}

extern __inline__ void outl(
				i386_ioport_t port,
				unsigned long datum)
{
	__asm__ volatile("outl %0, %1" : : "a" (datum), "d" (port));
}

extern __inline__ void outw(
				i386_ioport_t port,
				unsigned short datum)
{
	__asm__ volatile(".byte 0x66; outl %0, %1" : : "a" (datum), "d" (port));
}

extern __inline__ void outb(
				i386_ioport_t port,
				unsigned char datum)
{
	__asm__ volatile("outb %0, %1" : : "a" (datum), "d" (port));
}
#endif /* defined(__GNUC__) && (!MACH_ASSERT) */
#endif /* I386_PIO_H */
