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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * @OSF_COPYRIGHT@
24: */
25: /*
26: * Mach Operating System
27: * Copyright (c) 1991,1990 Carnegie Mellon University
28: * All Rights Reserved.
29: *
30: * Permission to use, copy, modify and distribute this software and its
31: * documentation is hereby granted, provided that both the copyright
32: * notice and this permission notice appear in all copies of the
33: * software, derivative works or modified versions, and any portions
34: * thereof, and that both notices appear in supporting documentation.
35: *
36: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
37: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
38: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
39: *
40: * Carnegie Mellon requests users of this software to return to
41: *
42: * Software Distribution Coordinator or [email protected]
43: * School of Computer Science
44: * Carnegie Mellon University
45: * Pittsburgh PA 15213-3890
46: *
47: * any improvements or extensions that they make and grant Carnegie Mellon
48: * the rights to redistribute these changes.
49: */
50: /*
51: */
52: #ifndef I386_PIO_H
53: #define I386_PIO_H
54: #include <cpus.h>
55: #include <mach_assert.h>
56:
57: typedef unsigned short i386_ioport_t;
58:
59: /* read a longword */
60: extern unsigned long inl(
61: i386_ioport_t port);
62: /* read a shortword */
63: extern unsigned short inw(
64: i386_ioport_t port);
65: /* read a byte */
66: extern unsigned char inb(
67: i386_ioport_t port);
68: /* write a longword */
69: extern void outl(
70: i386_ioport_t port,
71: unsigned long datum);
72: /* write a word */
73: extern void outw(
74: i386_ioport_t port,
75: unsigned short datum);
76: /* write a longword */
77: extern void outb(
78: i386_ioport_t port,
79: unsigned char datum);
80:
81: /* input an array of longwords */
82: extern void linl(
83: i386_ioport_t port,
84: int * data,
85: int count);
86: /* output an array of longwords */
87: extern void loutl(
88: i386_ioport_t port,
89: int * data,
90: int count);
91:
92: /* input an array of words */
93: extern void linw(
94: i386_ioport_t port,
95: int * data,
96: int count);
97: /* output an array of words */
98: extern void loutw(
99: i386_ioport_t port,
100: int * data,
101: int count);
102:
103: /* input an array of bytes */
104: extern void linb(
105: i386_ioport_t port,
106: char * data,
107: int count);
108: /* output an array of bytes */
109: extern void loutb(
110: i386_ioport_t port,
111: char * data,
112: int count);
113:
114: #if defined(__GNUC__) && (!MACH_ASSERT)
115: extern __inline__ unsigned long inl(
116: i386_ioport_t port)
117: {
118: unsigned long datum;
119: __asm__ volatile("inl %1, %0" : "=a" (datum) : "d" (port));
120: return(datum);
121: }
122:
123: extern __inline__ unsigned short inw(
124: i386_ioport_t port)
125: {
126: unsigned short datum;
127: __asm__ volatile(".byte 0x66; inl %1, %0" : "=a" (datum) : "d" (port));
128: return(datum);
129: }
130:
131: extern __inline__ unsigned char inb(
132: i386_ioport_t port)
133: {
134: unsigned char datum;
135: __asm__ volatile("inb %1, %0" : "=a" (datum) : "d" (port));
136: return(datum);
137: }
138:
139: extern __inline__ void outl(
140: i386_ioport_t port,
141: unsigned long datum)
142: {
143: __asm__ volatile("outl %0, %1" : : "a" (datum), "d" (port));
144: }
145:
146: extern __inline__ void outw(
147: i386_ioport_t port,
148: unsigned short datum)
149: {
150: __asm__ volatile(".byte 0x66; outl %0, %1" : : "a" (datum), "d" (port));
151: }
152:
153: extern __inline__ void outb(
154: i386_ioport_t port,
155: unsigned char datum)
156: {
157: __asm__ volatile("outb %0, %1" : : "a" (datum), "d" (port));
158: }
159: #endif /* defined(__GNUC__) && (!MACH_ASSERT) */
160: #endif /* I386_PIO_H */
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