1 /*
2 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
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
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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 [email protected]
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 _ARCH_I386_PIO_H_
59 #define _ARCH_I386_PIO_H_
60
61 typedef unsigned short i386_ioport_t;
62
63 #if defined(__GNUC__)
inl(i386_ioport_t port)64 static __inline__ unsigned int inl(
65 i386_ioport_t port)
66 {
67 unsigned int datum;
68 __asm__ volatile("inl %w1, %0" : "=a" (datum) : "Nd" (port));
69 return(datum);
70 }
71
inw(i386_ioport_t port)72 static __inline__ unsigned short inw(
73 i386_ioport_t port)
74 {
75 unsigned short datum;
76 __asm__ volatile("inw %w1, %w0" : "=a" (datum) : "Nd" (port));
77 return(datum);
78 }
79
inb(i386_ioport_t port)80 static __inline__ unsigned char inb(
81 i386_ioport_t port)
82 {
83 unsigned char datum;
84 __asm__ volatile("inb %w1, %b0" : "=a" (datum) : "Nd" (port));
85 return(datum);
86 }
87
outl(i386_ioport_t port,unsigned int datum)88 static __inline__ void outl(
89 i386_ioport_t port,
90 unsigned int datum)
91 {
92 __asm__ volatile("outl %0, %w1" : : "a" (datum), "Nd" (port));
93 }
94
outw(i386_ioport_t port,unsigned short datum)95 static __inline__ void outw(
96 i386_ioport_t port,
97 unsigned short datum)
98 {
99 __asm__ volatile("outw %w0, %w1" : : "a" (datum), "Nd" (port));
100 }
101
outb(i386_ioport_t port,unsigned char datum)102 static __inline__ void outb(
103 i386_ioport_t port,
104 unsigned char datum)
105 {
106 __asm__ volatile("outb %b0, %w1" : : "a" (datum), "Nd" (port));
107 }
108 #endif /* defined(__GNUC__) */
109 #endif /* _ARCH_I386_PIO_H_ */
110