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n_r3964.h
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/* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ /* r3964 linediscipline for linux * * ----------------------------------------------------------- * Copyright by * Philips Automation Projects * Kassel (Germany) * ----------------------------------------------------------- * This software may be used and distributed according to the terms of * the GNU General Public License, incorporated herein by reference. * * Author: * L. Haag * * $Log: r3964.h,v $ * Revision 1.4 2005/12/21 19:54:24 Kurt Huwig <kurt huwig de> * Fixed HZ usage on 2.6 kernels * Removed unnecessary include * * Revision 1.3 2001/03/18 13:02:24 dwmw2 * Fix timer usage, use spinlocks properly. * * Revision 1.2 2001/03/18 12:53:15 dwmw2 * Merge changes in 2.4.2 * * Revision 1.1.1.1 1998/10/13 16:43:14 dwmw2 * This'll screw the version control * * Revision 1.6 1998/09/30 00:40:38 dwmw2 * Updated to use kernel's N_R3964 if available * * Revision 1.4 1998/04/02 20:29:44 lhaag * select, blocking, ... * * Revision 1.3 1998/02/12 18:58:43 root * fixed some memory leaks * calculation of checksum characters * * Revision 1.2 1998/02/07 13:03:17 root * ioctl read_telegram * * Revision 1.1 1998/02/06 19:19:43 root * Initial revision * * */ #ifndef __LINUX_N_R3964_H__ #define __LINUX_N_R3964_H__ /* line disciplines for r3964 protocol */ /* * Ioctl-commands */ #define R3964_ENABLE_SIGNALS 0x5301 #define R3964_SETPRIORITY 0x5302 #define R3964_USE_BCC 0x5303 #define R3964_READ_TELEGRAM 0x5304 /* Options for R3964_SETPRIORITY */ #define R3964_MASTER 0 #define R3964_SLAVE 1 /* Options for R3964_ENABLE_SIGNALS */ #define R3964_SIG_ACK 0x0001 #define R3964_SIG_DATA 0x0002 #define R3964_SIG_ALL 0x000f #define R3964_SIG_NONE 0x0000 #define R3964_USE_SIGIO 0x1000 /* * r3964 operation states: */ /* types for msg_id: */ enum {R3964_MSG_ACK=1, R3964_MSG_DATA }; #define R3964_MAX_MSG_COUNT 32 /* error codes for client messages */ #define R3964_OK 0 /* no error. */ #define R3964_TX_FAIL -1 /* transmission error, block NOT sent */ #define R3964_OVERFLOW -2 /* msg queue overflow */ /* the client gets this struct when calling read(fd,...): */ struct r3964_client_message { int msg_id; int arg; int error_code; }; #define R3964_MTU 256 #endif /* __LINUX_N_R3964_H__ */