FreeBSD/Linux Kernel Cross Reference
sys/i386/io_port.h
1 /*
2 * Mach Operating System
3 * Copyright (c) 1991 Carnegie Mellon University
4 * All Rights Reserved.
5 *
6 * Permission to use, copy, modify and distribute this software and its
7 * documentation is hereby granted, provided that both the copyright
8 * notice and this permission notice appear in all copies of the
9 * software, derivative works or modified versions, and any portions
10 * thereof, and that both notices appear in supporting documentation.
11 *
12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15 *
16 * Carnegie Mellon requests users of this software to return to
17 *
18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
19 * School of Computer Science
20 * Carnegie Mellon University
21 * Pittsburgh PA 15213-3890
22 *
23 * any improvements or extensions that they make and grant Carnegie Mellon
24 * the rights to redistribute these changes.
25 */
26
27 /*
28 * HISTORY
29 * $Log: io_port.h,v $
30 * Revision 2.2 92/01/03 20:07:05 dbg
31 * Created.
32 * [91/11/07 dbg]
33 *
34 */
35
36 #ifndef _I386_IO_PORT_H_
37 #define _I386_IO_PORT_H_
38 /*
39 * IO register definitions.
40 */
41 typedef unsigned short io_reg_t;
42
43 #define IO_REG_NULL (0x00ff) /* reserved */
44
45 /*
46 * Allocate and destroy io port sets for users to map into
47 * threads.
48 */
49 extern void io_port_create(/* device_t, io_reg_t * */);
50 extern void io_port_destroy(/* device_t */);
51
52 #endif /* _I386_IO_PORT_H_ */
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