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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*
26: * Copyright (c) 1992 NeXT Computer, Inc.
27: *
28: * Inlines for io space access.
29: *
30: * HISTORY
31: *
32: * 20 May 1992 ? at NeXT
33: * Created.
34: */
35:
36: #import <architecture/i386/io.h>
37:
38: #if !defined(DEFINE_INLINE_FUNCTIONS)
39: static
40: #endif
41: inline
42: unsigned char
43: inb(
44: io_addr_t port
45: )
46: {
47: unsigned char data;
48:
49: asm volatile(
50: "inb %1,%0"
51:
52: : "=a" (data)
53: : "d" (port));
54:
55: return (data);
56: }
57:
58: #if !defined(DEFINE_INLINE_FUNCTIONS)
59: static
60: #endif
61: inline
62: unsigned short
63: inw(
64: io_addr_t port
65: )
66: {
67: unsigned short data;
68:
69: asm volatile(
70: "inw %1,%0"
71:
72: : "=a" (data)
73: : "d" (port));
74:
75: return (data);
76: }
77:
78: #if !defined(DEFINE_INLINE_FUNCTIONS)
79: static
80: #endif
81: inline
82: unsigned short
83: inl(
84: io_addr_t port
85: )
86: {
87: unsigned short data;
88:
89: asm volatile(
90: "inl %1,%0"
91:
92: : "=a" (data)
93: : "d" (port));
94:
95: return (data);
96: }
97:
98: #if !defined(DEFINE_INLINE_FUNCTIONS)
99: static
100: #endif
101: inline
102: void
103: outb(
104: io_addr_t port,
105: unsigned char data
106: )
107: {
108: static int xxx;
109:
110: asm volatile(
111: "outb %2,%1; lock; incl %0"
112:
113: : "=m" (xxx)
114: : "d" (port), "a" (data), "0" (xxx)
115: : "cc");
116: }
117:
118: #if !defined(DEFINE_INLINE_FUNCTIONS)
119: static
120: #endif
121: inline
122: void
123: outw(
124: io_addr_t port,
125: unsigned short data
126: )
127: {
128: static int xxx;
129:
130: asm volatile(
131: "outw %2,%1; lock; incl %0"
132:
133: : "=m" (xxx)
134: : "d" (port), "a" (data), "0" (xxx)
135: : "cc");
136: }
137:
138: #if !defined(DEFINE_INLINE_FUNCTIONS)
139: static
140: #endif
141: inline
142: void
143: outl(
144: io_addr_t port,
145: unsigned short data
146: )
147: {
148: static int xxx;
149:
150: asm volatile(
151: "outl %2,%1; lock; incl %0"
152:
153: : "=m" (xxx)
154: : "d" (port), "a" (data), "0" (xxx)
155: : "cc");
156: }
157:
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