LXR linux/include/uapi/linux/n

   1/* 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__ */
  99