blob: 81337cbf40b7fbed2e56544e99d28c76fe16f1e5 [file] [log] [blame]
David Howells607ca462012-10-13 10:46:48 +01001/* r3964 linediscipline for linux
2 *
3 * -----------------------------------------------------------
4 * Copyright by
5 * Philips Automation Projects
6 * Kassel (Germany)
7 * -----------------------------------------------------------
8 * This software may be used and distributed according to the terms of
9 * the GNU General Public License, incorporated herein by reference.
10 *
11 * Author:
12 * L. Haag
13 *
14 * $Log: r3964.h,v $
15 * Revision 1.4 2005/12/21 19:54:24 Kurt Huwig <kurt huwig de>
16 * Fixed HZ usage on 2.6 kernels
17 * Removed unnecessary include
18 *
19 * Revision 1.3 2001/03/18 13:02:24 dwmw2
20 * Fix timer usage, use spinlocks properly.
21 *
22 * Revision 1.2 2001/03/18 12:53:15 dwmw2
23 * Merge changes in 2.4.2
24 *
25 * Revision 1.1.1.1 1998/10/13 16:43:14 dwmw2
26 * This'll screw the version control
27 *
28 * Revision 1.6 1998/09/30 00:40:38 dwmw2
29 * Updated to use kernel's N_R3964 if available
30 *
31 * Revision 1.4 1998/04/02 20:29:44 lhaag
32 * select, blocking, ...
33 *
34 * Revision 1.3 1998/02/12 18:58:43 root
35 * fixed some memory leaks
36 * calculation of checksum characters
37 *
38 * Revision 1.2 1998/02/07 13:03:17 root
39 * ioctl read_telegram
40 *
41 * Revision 1.1 1998/02/06 19:19:43 root
42 * Initial revision
43 *
44 *
45 */
46
47#ifndef _UAPI__LINUX_N_R3964_H__
48#define _UAPI__LINUX_N_R3964_H__
49
50/* line disciplines for r3964 protocol */
51
52
53/*
54 * Ioctl-commands
55 */
56
57#define R3964_ENABLE_SIGNALS 0x5301
58#define R3964_SETPRIORITY 0x5302
59#define R3964_USE_BCC 0x5303
60#define R3964_READ_TELEGRAM 0x5304
61
62/* Options for R3964_SETPRIORITY */
63#define R3964_MASTER 0
64#define R3964_SLAVE 1
65
66/* Options for R3964_ENABLE_SIGNALS */
67#define R3964_SIG_ACK 0x0001
68#define R3964_SIG_DATA 0x0002
69#define R3964_SIG_ALL 0x000f
70#define R3964_SIG_NONE 0x0000
71#define R3964_USE_SIGIO 0x1000
72
73/*
74 * r3964 operation states:
75 */
76
77/* types for msg_id: */
78enum {R3964_MSG_ACK=1, R3964_MSG_DATA };
79
80#define R3964_MAX_MSG_COUNT 32
81
82/* error codes for client messages */
83#define R3964_OK 0 /* no error. */
84#define R3964_TX_FAIL -1 /* transmission error, block NOT sent */
85#define R3964_OVERFLOW -2 /* msg queue overflow */
86
87/* the client gets this struct when calling read(fd,...): */
88struct r3964_client_message {
89 int msg_id;
90 int arg;
91 int error_code;
92};
93
94#define R3964_MTU 256
95
96
97
98#endif /* _UAPI__LINUX_N_R3964_H__ */