[apple/xnu.git] / osfmk / i386 / pio.h

/*
 * 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 */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
8ad349bb	4	* @APPLE_LICENSE_OSREFERENCE_HEADER_START@
1c79356b	5	*
8ad349bb A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the
	10	* License may not be used to create, or enable the creation or
	11	* redistribution of, unlawful or unlicensed copies of an Apple operating
	12	* system, or to circumvent, violate, or enable the circumvention or
	13	* violation of, any terms of an Apple operating system software license
	14	* agreement.
	15	*
	16	* Please obtain a copy of the License at
	17	* http://www.opensource.apple.com/apsl/ and read it before using this
	18	* file.
	19	*
	20	* The Original Code and all software distributed under the License are
	21	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	22	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	23	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	24	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	25	* Please see the License for the specific language governing rights and
	26	* limitations under the License.
	27	*
	28	* @APPLE_LICENSE_OSREFERENCE_HEADER_END@
1c79356b A	29	*/
	30	/*
	31	* @OSF_COPYRIGHT@
	32	*/
	33	/*
	34	* Mach Operating System
	35	* Copyright (c) 1991,1990 Carnegie Mellon University
	36	* All Rights Reserved.
	37	*
	38	* Permission to use, copy, modify and distribute this software and its
	39	* documentation is hereby granted, provided that both the copyright
	40	* notice and this permission notice appear in all copies of the
	41	* software, derivative works or modified versions, and any portions
	42	* thereof, and that both notices appear in supporting documentation.
	43	*
	44	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	45	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	46	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	47	*
	48	* Carnegie Mellon requests users of this software to return to
	49	*
	50	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	51	* School of Computer Science
	52	* Carnegie Mellon University
	53	* Pittsburgh PA 15213-3890
	54	*
	55	* any improvements or extensions that they make and grant Carnegie Mellon
	56	* the rights to redistribute these changes.
	57	*/
	58	/*
	59	*/
	60	#ifndef I386_PIO_H
	61	#define I386_PIO_H
1c79356b A	62	#include <mach_assert.h>
	63
	64	typedef unsigned short i386_ioport_t;
	65
	66	/* read a longword */
	67	extern unsigned long inl(
	68	i386_ioport_t port);
	69	/* read a shortword */
	70	extern unsigned short inw(
	71	i386_ioport_t port);
	72	/* read a byte */
	73	extern unsigned char inb(
	74	i386_ioport_t port);
	75	/* write a longword */
	76	extern void outl(
	77	i386_ioport_t port,
	78	unsigned long datum);
	79	/* write a word */
	80	extern void outw(
	81	i386_ioport_t port,
	82	unsigned short datum);
	83	/* write a longword */
	84	extern void outb(
	85	i386_ioport_t port,
	86	unsigned char datum);
	87
	88	/* input an array of longwords */
	89	extern void linl(
	90	i386_ioport_t port,
	91	int * data,
	92	int count);
	93	/* output an array of longwords */
	94	extern void loutl(
	95	i386_ioport_t port,
	96	int * data,
	97	int count);
	98
	99	/* input an array of words */
	100	extern void linw(
	101	i386_ioport_t port,
	102	int * data,
	103	int count);
	104	/* output an array of words */
	105	extern void loutw(
	106	i386_ioport_t port,
	107	int * data,
	108	int count);
	109
	110	/* input an array of bytes */
	111	extern void linb(
	112	i386_ioport_t port,
	113	char * data,
	114	int count);
	115	/* output an array of bytes */
	116	extern void loutb(
	117	i386_ioport_t port,
	118	char * data,
	119	int count);
	120
8ad349bb A	121	#if defined(__GNUC__) && (!MACH_ASSERT)
	122	extern __inline__ unsigned long inl(
	123	i386_ioport_t port)
	124	{
	125	unsigned long datum;
	126	__asm__ volatile("inl %1, %0" : "=a" (datum) : "d" (port));
	127	return(datum);
	128	}
	129
	130	extern __inline__ unsigned short inw(
	131	i386_ioport_t port)
	132	{
	133	unsigned short datum;
	134	__asm__ volatile(".byte 0x66; inl %1, %0" : "=a" (datum) : "d" (port));
	135	return(datum);
	136	}
	137
	138	extern __inline__ unsigned char inb(
	139	i386_ioport_t port)
	140	{
	141	unsigned char datum;
	142	__asm__ volatile("inb %1, %0" : "=a" (datum) : "d" (port));
	143	return(datum);
	144	}
	145
	146	extern __inline__ void outl(
	147	i386_ioport_t port,
	148	unsigned long datum)
	149	{
	150	__asm__ volatile("outl %0, %1" : : "a" (datum), "d" (port));
	151	}
	152
	153	extern __inline__ void outw(
	154	i386_ioport_t port,
	155	unsigned short datum)
	156	{
	157	__asm__ volatile(".byte 0x66; outl %0, %1" : : "a" (datum), "d" (port));
	158	}
	159
	160	extern __inline__ void outb(
	161	i386_ioport_t port,
	162	unsigned char datum)
	163	{
	164	__asm__ volatile("outb %0, %1" : : "a" (datum), "d" (port));
	165	}
	166	#endif /* defined(__GNUC__) && (!MACH_ASSERT) */
1c79356b	167	#endif /* I386_PIO_H */