100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
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/* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */
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/* r3964 linediscipline for linux
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*
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* -----------------------------------------------------------
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* Copyright by
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* Philips Automation Projects
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* Kassel (Germany)
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* -----------------------------------------------------------
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* This software may be used and distributed according to the terms of
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* the GNU General Public License, incorporated herein by reference.
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*
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* Author:
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* L. Haag
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*
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* $Log: r3964.h,v $
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* Revision 1.4 2005/12/21 19:54:24 Kurt Huwig <kurt huwig de>
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* Fixed HZ usage on 2.6 kernels
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* Removed unnecessary include
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*
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* Revision 1.3 2001/03/18 13:02:24 dwmw2
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* Fix timer usage, use spinlocks properly.
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*
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* Revision 1.2 2001/03/18 12:53:15 dwmw2
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* Merge changes in 2.4.2
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*
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* Revision 1.1.1.1 1998/10/13 16:43:14 dwmw2
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* This'll screw the version control
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*
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* Revision 1.6 1998/09/30 00:40:38 dwmw2
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* Updated to use kernel's N_R3964 if available
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*
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* Revision 1.4 1998/04/02 20:29:44 lhaag
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* select, blocking, ...
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*
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* Revision 1.3 1998/02/12 18:58:43 root
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* fixed some memory leaks
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* calculation of checksum characters
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*
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* Revision 1.2 1998/02/07 13:03:17 root
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* ioctl read_telegram
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*
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* Revision 1.1 1998/02/06 19:19:43 root
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* Initial revision
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*
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*
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*/
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#ifndef __LINUX_N_R3964_H__
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#define __LINUX_N_R3964_H__
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/* line disciplines for r3964 protocol */
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/*
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* Ioctl-commands
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*/
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#define R3964_ENABLE_SIGNALS 0x5301
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#define R3964_SETPRIORITY 0x5302
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#define R3964_USE_BCC 0x5303
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#define R3964_READ_TELEGRAM 0x5304
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/* Options for R3964_SETPRIORITY */
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#define R3964_MASTER 0
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#define R3964_SLAVE 1
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/* Options for R3964_ENABLE_SIGNALS */
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#define R3964_SIG_ACK 0x0001
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#define R3964_SIG_DATA 0x0002
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#define R3964_SIG_ALL 0x000f
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#define R3964_SIG_NONE 0x0000
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#define R3964_USE_SIGIO 0x1000
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/*
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* r3964 operation states:
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*/
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/* types for msg_id: */
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enum {R3964_MSG_ACK=1, R3964_MSG_DATA };
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#define R3964_MAX_MSG_COUNT 32
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/* error codes for client messages */
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#define R3964_OK 0 /* no error. */
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#define R3964_TX_FAIL -1 /* transmission error, block NOT sent */
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#define R3964_OVERFLOW -2 /* msg queue overflow */
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/* the client gets this struct when calling read(fd,...): */
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struct r3964_client_message {
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int msg_id;
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int arg;
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int error_code;
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};
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#define R3964_MTU 256
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#endif /* __LINUX_N_R3964_H__ */
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