1 /* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */
2 /* r3964 linediscipline for linux
3 *
4 * -----------------------------------------------------------
5 * Copyright by
6 * Philips Automation Projects
7 * Kassel (Germany)
8 * -----------------------------------------------------------
9 * This software may be used and distributed according to the terms of
10 * the GNU General Public License, incorporated herein by reference.
11 *
12 * Author:
13 * L. Haag
14 *
15 * $Log: r3964.h,v $
16 * Revision 1.4 2005/12/21 19:54:24 Kurt Huwig <kurt huwig de>
17 * Fixed HZ usage on 2.6 kernels
18 * Removed unnecessary include
19 *
20 * Revision 1.3 2001/03/18 13:02:24 dwmw2
21 * Fix timer usage, use spinlocks properly.
22 *
23 * Revision 1.2 2001/03/18 12:53:15 dwmw2
24 * Merge changes in 2.4.2
25 *
26 * Revision 1.1.1.1 1998/10/13 16:43:14 dwmw2
27 * This'll screw the version control
28 *
29 * Revision 1.6 1998/09/30 00:40:38 dwmw2
30 * Updated to use kernel's N_R3964 if available
31 *
32 * Revision 1.4 1998/04/02 20:29:44 lhaag
33 * select, blocking, ...
34 *
35 * Revision 1.3 1998/02/12 18:58:43 root
36 * fixed some memory leaks
37 * calculation of checksum characters
38 *
39 * Revision 1.2 1998/02/07 13:03:17 root
40 * ioctl read_telegram
41 *
42 * Revision 1.1 1998/02/06 19:19:43 root
43 * Initial revision
44 *
45 *
46 */
47
48 #ifndef _UAPI__LINUX_N_R3964_H__
49 #define _UAPI__LINUX_N_R3964_H__
50
51 /* line disciplines for r3964 protocol */
52
53
54 /*
55 * Ioctl-commands
56 */
57
58 #define R3964_ENABLE_SIGNALS 0x5301
59 #define R3964_SETPRIORITY 0x5302
60 #define R3964_USE_BCC 0x5303
61 #define R3964_READ_TELEGRAM 0x5304
62
63 /* Options for R3964_SETPRIORITY */
64 #define R3964_MASTER 0
65 #define R3964_SLAVE 1
66
67 /* Options for R3964_ENABLE_SIGNALS */
68 #define R3964_SIG_ACK 0x0001
69 #define R3964_SIG_DATA 0x0002
70 #define R3964_SIG_ALL 0x000f
71 #define R3964_SIG_NONE 0x0000
72 #define R3964_USE_SIGIO 0x1000
73
74 /*
75 * r3964 operation states:
76 */
77
78 /* types for msg_id: */
79 enum {R3964_MSG_ACK=1, R3964_MSG_DATA };
80
81 #define R3964_MAX_MSG_COUNT 32
82
83 /* error codes for client messages */
84 #define R3964_OK 0 /* no error. */
85 #define R3964_TX_FAIL -1 /* transmission error, block NOT sent */
86 #define R3964_OVERFLOW -2 /* msg queue overflow */
87
88 /* the client gets this struct when calling read(fd,...): */
89 struct r3964_client_message {
90 int msg_id;
91 int arg;
92 int error_code;
93 };
94
95 #define R3964_MTU 256
96
97
98
99 #endif /* _UAPI__LINUX_N_R3964_H__ */