include/uapi/linux/n_r3964.h

   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__ */