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      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: */
     78 enum {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,...): */
     88 struct 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