ntp-4.2.6p5.tar.gz

/* * /src/NTP/REPOSITORY/ntp4-dev/ntpd/refclock_parse.c,v 4.81 2009/05/01 10:15:29 kardel RELEASE_20090105_A * * refclock_parse.c,v 4.81 2009/05/01 10:15:29 kardel RELEASE_20090105_A * * generic reference clock driver for several DCF/GPS/MSF/... receivers * * PPS notes: * On systems that support PPSAPI (RFC2783) PPSAPI is the * preferred interface. * * Optionally make use of a STREAMS module for input processing where * available and configured. This STREAMS module reduces the time * stamp latency for serial and PPS events. * Currently the STREAMS module is only available for Suns running * SunOS 4.x and SunOS5.x. * * Copyright (c) 1995-2009 by Frank Kardel <kardel <AT> ntp.org> * Copyright (c) 1989-1994 by Frank Kardel, Friedrich-Alexander Universit�t Erlangen-N�rnberg, Germany * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the author nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #if defined(REFCLOCK) && defined(CLOCK_PARSE) /* * This driver currently provides the support for * - Meinberg receiver DCF77 PZF 535 (TCXO version) (DCF) * - Meinberg receiver DCF77 PZF 535 (OCXO version) (DCF) * - Meinberg receiver DCF77 PZF 509 (DCF) * - Meinberg receiver DCF77 AM receivers (e.g. C51) (DCF) * - IGEL CLOCK (DCF) * - ELV DCF7000 (DCF) * - Schmid clock (DCF) * - Conrad DCF77 receiver module (DCF) * - FAU DCF77 NTP receiver (TimeBrick) (DCF) * - WHARTON 400A Series clock (DCF) * * - Meinberg GPS166/GPS167 (GPS) * - Trimble (TSIP and TAIP protocol) (GPS) * * - RCC8000 MSF Receiver (MSF) * - VARITEXT clock (MSF) */ /* * Meinberg receivers are usually connected via a * 9600 baud serial line * * The Meinberg GPS receivers also have a special NTP time stamp * format. The firmware release is Uni-Erlangen. * * Meinberg generic receiver setup: * output time code every second * Baud rate 9600 7E2S * * Meinberg GPS16x setup: * output time code every second * Baudrate 19200 8N1 * * This software supports the standard data formats used * in Meinberg receivers. * * Special software versions are only sensible for the * GPS 16x family of receivers. * * Meinberg can be reached via: http://www.meinberg.de/ */ #include "ntpd.h" #include "ntp_refclock.h" #include "ntp_unixtime.h" /* includes <sys/time.h> */ #include "ntp_control.h" #include "ntp_string.h" #include <stdio.h> #include <ctype.h> #ifndef TM_IN_SYS_TIME # include <time.h> #endif #ifdef HAVE_UNISTD_H # include <unistd.h> #endif #if !defined(STREAM) && !defined(HAVE_SYSV_TTYS) && !defined(HAVE_BSD_TTYS) && !defined(HAVE_TERMIOS) # include "Bletch: Define one of {STREAM,HAVE_SYSV_TTYS,HAVE_TERMIOS}" #endif #ifdef STREAM # include <sys/stream.h> # include <sys/stropts.h> #endif #ifdef HAVE_TERMIOS # define TTY_GETATTR(_FD_, _ARG_) tcgetattr((_FD_), (_ARG_)) # define TTY_SETATTR(_FD_, _ARG_) tcsetattr((_FD_), TCSANOW, (_ARG_)) # undef HAVE_SYSV_TTYS #endif #ifdef HAVE_SYSV_TTYS # define TTY_GETATTR(_FD_, _ARG_) ioctl((_FD_), TCGETA, (_ARG_)) # define TTY_SETATTR(_FD_, _ARG_) ioctl((_FD_), TCSETAW, (_ARG_)) #endif #ifdef HAVE_BSD_TTYS /* #error CURRENTLY NO BSD TTY SUPPORT */ # include "Bletch: BSD TTY not currently supported" #endif #ifdef HAVE_SYS_IOCTL_H # include <sys/ioctl.h> #endif #ifdef HAVE_PPSAPI # include "ppsapi_timepps.h" # include "refclock_atom.h" #endif #ifdef PPS # ifdef HAVE_SYS_PPSCLOCK_H # include <sys/ppsclock.h> # endif # ifdef HAVE_TIO_SERIAL_STUFF # include <linux/serial.h> # endif #endif #define BUFFER_SIZE(_BUF, _PTR) ((_BUF) + sizeof(_BUF) - (_PTR)) #define BUFFER_SIZES(_BUF, _PTR, _SZ) ((_BUF) + (_SZ) - (_PTR)) /* * document type of PPS interfacing - copy of ifdef mechanism in local_input() */ #undef PPS_METHOD #ifdef HAVE_PPSAPI #define PPS_METHOD "PPS API" #else #ifdef TIOCDCDTIMESTAMP #define PPS_METHOD "TIOCDCDTIMESTAMP" #else /* TIOCDCDTIMESTAMP */ #if defined(HAVE_STRUCT_PPSCLOCKEV) && (defined(HAVE_CIOGETEV) || defined(HAVE_TIOCGPPSEV)) #ifdef HAVE_CIOGETEV #define PPS_METHOD "CIOGETEV" #endif #ifdef HAVE_TIOCGPPSEV #define PPS_METHOD "TIOCGPPSEV" #endif #endif #endif /* TIOCDCDTIMESTAMP */ #endif /* HAVE_PPSAPI */ #include "ntp_io.h" #include "ntp_stdlib.h" #include "parse.h" #include "mbg_gps166.h" #include "trimble.h" #include "binio.h" #include "ascii.h" #include "ieee754io.h" #include "recvbuff.h" static char rcsid[] = "refclock_parse.c,v 4.81 2009/05/01 10:15:29 kardel RELEASE_20090105_A+POWERUPTRUST"; /**=========================================================================== ** external interface to ntp mechanism **/ static int parse_start (int, struct peer *); static void parse_shutdown (int, struct peer *); static void parse_poll (int, struct peer *); static void parse_control (int, struct refclockstat *, struct refclockstat *, struct peer *); struct refclock refclock_parse = { parse_start, parse_shutdown, parse_poll, parse_control, noentry, noentry, NOFLAGS }; /* * Definitions */ #define MAXUNITS 4 /* maximum number of "PARSE" units permitted */ #define PARSEDEVICE "/dev/refclock-%d" /* device to open %d is unit number */ #define PARSEPPSDEVICE "/dev/refclockpps-%d" /* optional pps device to open %d is unit number */ #undef ABS #define ABS(_X_) (((_X_) < 0) ? -(_X_) : (_X_)) #define PARSE_HARDPPS_DISABLE 0 #define PARSE_HARDPPS_ENABLE 1 /**=========================================================================== ** function vector for dynamically binding io handling mechanism **/ struct parseunit; /* to keep inquiring minds happy */ typedef struct bind { const char *bd_description; /* name of type of binding */ int (*bd_init) (struct parseunit *); /* initialize */ void (*bd_end) (struct parseunit *); /* end */ int (*bd_setcs) (struct parseunit *, parsectl_t *); /* set character size */ int (*bd_disable) (struct parseunit *); /* disable */ int (*bd_enable) (struct parseunit *); /* enable */ int (*bd_getfmt) (struct parseunit *, parsectl_t *); /* get format */ int (*bd_setfmt) (struct parseunit *, parsectl_t *); /* setfmt */ int (*bd_timecode) (struct parseunit *, parsectl_t *); /* get time code */ void (*bd_receive) (struct recvbuf