LXR linux/include/uapi/linux/n

   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: */
  79enum {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,...): */
  89struct 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__ */
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