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

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * 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. 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_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 <cpus.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	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
d7e50217	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b	7	*
d7e50217 A	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
d7e50217 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
1c79356b A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/*
	26	* @OSF_COPYRIGHT@
	27	*/
	28	/*
	29	* Mach Operating System
	30	* Copyright (c) 1991,1990 Carnegie Mellon University
	31	* All Rights Reserved.
	32	*
	33	* Permission to use, copy, modify and distribute this software and its
	34	* documentation is hereby granted, provided that both the copyright
	35	* notice and this permission notice appear in all copies of the
	36	* software, derivative works or modified versions, and any portions
	37	* thereof, and that both notices appear in supporting documentation.
	38	*
	39	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	40	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	41	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	42	*
	43	* Carnegie Mellon requests users of this software to return to
	44	*
	45	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	46	* School of Computer Science
	47	* Carnegie Mellon University
	48	* Pittsburgh PA 15213-3890
	49	*
	50	* any improvements or extensions that they make and grant Carnegie Mellon
	51	* the rights to redistribute these changes.
	52	*/
	53	/*
	54	*/
	55	#ifndef I386_PIO_H
	56	#define I386_PIO_H
	57	#include <cpus.h>
	58	#include <mach_assert.h>
	59
	60	typedef unsigned short i386_ioport_t;
	61
	62	/* read a longword */
	63	extern unsigned long inl(
	64	i386_ioport_t port);
	65	/* read a shortword */
	66	extern unsigned short inw(
	67	i386_ioport_t port);
	68	/* read a byte */
	69	extern unsigned char inb(
	70	i386_ioport_t port);
	71	/* write a longword */
	72	extern void outl(
	73	i386_ioport_t port,
	74	unsigned long datum);
	75	/* write a word */
	76	extern void outw(
	77	i386_ioport_t port,
	78	unsigned short datum);
	79	/* write a longword */
	80	extern void outb(
	81	i386_ioport_t port,
	82	unsigned char datum);
	83
	84	/* input an array of longwords */
	85	extern void linl(
86	i386_ioport_t port,
87	int * data,
88	int count);
89	/* output an array of longwords */
90	extern void loutl(
91	i386_ioport_t port,
92	int * data,
93	int count);
94
95	/* input an array of words */
96	extern void linw(
97	i386_ioport_t port,
98	int * data,
99	int count);
100	/* output an array of words */
101	extern void loutw(
102	i386_ioport_t port,
103	int * data,
104	int count);
105
106	/* input an array of bytes */
107	extern void linb(
108	i386_ioport_t port,
109	char * data,
110	int count);
111	/* output an array of bytes */
112	extern void loutb(
113	i386_ioport_t port,
114	char * data,
115	int count);
116
117	#if defined(__GNUC__) && (!MACH_ASSERT)
118	extern __inline__ unsigned long inl(
119	i386_ioport_t port)
120	{
121	unsigned long datum;
122	__asm__ volatile("inl %1, %0" : "=a" (datum) : "d" (port));
123	return(datum);
124	}
125
126	extern __inline__ unsigned short inw(
127	i386_ioport_t port)
128	{
129	unsigned short datum;
130	__asm__ volatile(".byte 0x66; inl %1, %0" : "=a" (datum) : "d" (port));
131	return(datum);
132	}
133
134	extern __inline__ unsigned char inb(
135	i386_ioport_t port)
136	{
137	unsigned char datum;
138	__asm__ volatile("inb %1, %0" : "=a" (datum) : "d" (port));
139	return(datum);
140	}
141
142	extern __inline__ void outl(
143	i386_ioport_t port,
144	unsigned long datum)
145	{
146	__asm__ volatile("outl %0, %1" : : "a" (datum), "d" (port));
147	}
148
149	extern __inline__ void outw(
150	i386_ioport_t port,
151	unsigned short datum)
152	{
153	__asm__ volatile(".byte 0x66; outl %0, %1" : : "a" (datum), "d" (port));
154	}
155
156	extern __inline__ void outb(
157	i386_ioport_t port,
158	unsigned char datum)
159	{
160	__asm__ volatile("outb %0, %1" : : "a" (datum), "d" (port));
161	}
162	#endif /* defined(__GNUC__) && (!MACH_ASSERT) */
163	#endif /* I386_PIO_H */