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

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_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_OSREFERENCE_LICENSE_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	*
8f6c56a5	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
8f6c56a5 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 License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
8ad349bb	24	* limitations under the License.
8f6c56a5 A	25	*
8f6c56a5 A	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* @OSF_COPYRIGHT@
	30	*/
	31	/*
	32	* Mach Operating System
	33	* Copyright (c) 1991,1990 Carnegie Mellon University
	34	* All Rights Reserved.
	35	*
	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
	41	*
	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	45	*
	46	* Carnegie Mellon requests users of this software to return to
	47	*
	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
	52	*
	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
	56	/*
	57	*/
	58	#ifndef I386_PIO_H
	59	#define I386_PIO_H
1c79356b A	60	#include <mach_assert.h>
	61
	62	typedef unsigned short i386_ioport_t;
	63
	64	/* read a longword */
	65	extern unsigned long inl(
	66	i386_ioport_t port);
	67	/* read a shortword */
	68	extern unsigned short inw(
	69	i386_ioport_t port);
	70	/* read a byte */
	71	extern unsigned char inb(
	72	i386_ioport_t port);
	73	/* write a longword */
	74	extern void outl(
	75	i386_ioport_t port,
	76	unsigned long datum);
	77	/* write a word */
	78	extern void outw(
	79	i386_ioport_t port,
	80	unsigned short datum);
	81	/* write a longword */
	82	extern void outb(
	83	i386_ioport_t port,
	84	unsigned char datum);
	85
	86	/* input an array of longwords */
	87	extern void linl(
	88	i386_ioport_t port,
	89	int * data,
	90	int count);
	91	/* output an array of longwords */
	92	extern void loutl(
	93	i386_ioport_t port,
	94	int * data,
	95	int count);
	96
	97	/* input an array of words */
	98	extern void linw(
	99	i386_ioport_t port,
	100	int * data,
	101	int count);
	102	/* output an array of words */
	103	extern void loutw(
	104	i386_ioport_t port,
	105	int * data,
	106	int count);
	107
	108	/* input an array of bytes */
	109	extern void linb(
	110	i386_ioport_t port,
	111	char * data,
	112	int count);
	113	/* output an array of bytes */
	114	extern void loutb(
	115	i386_ioport_t port,
	116	char * data,
	117	int count);
	118
21362eb3 A	119	#if defined(__GNUC__) && (!MACH_ASSERT)
	120	extern __inline__ unsigned long inl(
	121	i386_ioport_t port)
	122	{
	123	unsigned long datum;
	124	__asm__ volatile("inl %1, %0" : "=a" (datum) : "d" (port));
	125	return(datum);
	126	}
	127
	128	extern __inline__ unsigned short inw(
	129	i386_ioport_t port)
	130	{
	131	unsigned short datum;
	132	__asm__ volatile(".byte 0x66; inl %1, %0" : "=a" (datum) : "d" (port));
	133	return(datum);
	134	}
	135
	136	extern __inline__ unsigned char inb(
	137	i386_ioport_t port)
	138	{
	139	unsigned char datum;
	140	__asm__ volatile("inb %1, %0" : "=a" (datum) : "d" (port));
	141	return(datum);
	142	}
	143
	144	extern __inline__ void outl(
	145	i386_ioport_t port,
	146	unsigned long datum)
	147	{
	148	__asm__ volatile("outl %0, %1" : : "a" (datum), "d" (port));
	149	}
	150
	151	extern __inline__ void outw(
	152	i386_ioport_t port,
	153	unsigned short datum)
	154	{
	155	__asm__ volatile(".byte 0x66; outl %0, %1" : : "a" (datum), "d" (port));
	156	}
	157
	158	extern __inline__ void outb(
	159	i386_ioport_t port,
	160	unsigned char datum)
	161	{
	162	__asm__ volatile("outb %0, %1" : : "a" (datum), "d" (port));
	163	}
	164	#endif /* defined(__GNUC__) && (!MACH_ASSERT) */
1c79356b	165	#endif /* I386_PIO_H */