/*      $NetBSD: refclock_palisade.h,v 1.6 2020/05/25 20:47:25 christos Exp $   */

/*
* This software was developed by the Software and Component Technologies
* group of Trimble Navigation, Ltd.
*
* Copyright (c) 1997, 1998, 1999, 2000   Trimble Navigation Ltd.
* All rights reserved.
*
* 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. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*    This product includes software developed by Trimble Navigation, Ltd.
* 4. The name of Trimble Navigation Ltd. may not be used to endorse or
*    promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY TRIMBLE NAVIGATION LTD. ``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 TRIMBLE NAVIGATION LTD. 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.
*/

/*
* refclock_palisade - clock driver for the Trimble Palisade GPS
* timing receiver
*
* For detailed information on this program, please refer to the html
* Refclock 29 page accompanying the NTP distribution.
*
* for questions / bugs / comments, contact:
* [email protected]
*
* Sven-Thorsten Dietrich
* 645 North Mary Avenue
* Post Office Box 3642
* Sunnyvale, CA 94088-3642
*
*/

#ifndef REFCLOCK_PALISADE_H
#define REFCLOCK_PALISADE_H

#if defined HAVE_SYS_MODEM_H
#include <sys/modem.h>
#ifndef __QNXNTO__
#define TIOCMSET MCSETA
#define TIOCMGET MCGETA
#define TIOCM_RTS MRTS
#endif
#endif

#ifdef HAVE_TERMIOS_H
# ifdef TERMIOS_NEEDS__SVID3
#  define _SVID3
# endif
# include <termios.h>
# include <sys/stat.h>
# ifdef TERMIOS_NEEDS__SVID3
#  undef _SVID3
# endif
#endif

#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif

#include "ntpd.h"
#include "ntp_io.h"
#include "ntp_control.h"
#include "ntp_refclock.h"
#include "ntp_unixtime.h"
#include "ntp_calgps.h"
#include "ntp_stdlib.h"

/*
* GPS Definitions
*/
#define DESCRIPTION     "Trimble Palisade GPS" /* Long name */
#define PRECISION       (-20)   /* precision assumed (about 1 us) */
#define REFID           "GPS\0" /* reference ID */
#define TRMB_MINPOLL    4       /* 16 seconds */
#define TRMB_MAXPOLL    5       /* 32 seconds */

/*
* I/O Definitions
*/
#define DEVICE          "/dev/palisade%d"       /* device name and unit */
#define SPEED232        B9600                   /* uart speed (9600 baud) */
#define SPEED232COP     B38400                  /* uart speed for Copernicus II (38400 baud) */

/*
* TSIP Report Definitions
*/
#define LENCODE_8F0B    74      /* Length of TSIP 8F-0B Packet & header */
#define LENCODE_NTP     22      /* Length of Palisade NTP Packet */

#define LENCODE_8FAC    68      /* Length of Thunderbolt 8F-AC Position Packet*/
#define LENCODE_8FAB    17      /* Length of Thunderbolt Primary Timing Packet*/

#define LENCODE_41      10      /* Length of Copernicus II GPS Time Packet*/

/* Allowed Sub-Packet ID's */
#define PACKET_8F0B     0x0B
#define PACKET_NTP      0xAD

/* Thunderbolt Packets */
#define PACKET_8FAC     0xAC    /* Supplementary Thunderbolt Time Packet */
#define PACKET_8FAB     0xAB    /* Primary Thunderbolt Time Packet */
#define PACKET_6D       0x6D    /* Supplementary Thunderbolt Tracking Stats */
#define PACKET_41       0x41    /* Thunderbolt I dont know what this packet is, it's not documented on my manual*/

/* Acutime Packets */
#define PACKET_41A      0x41    /* GPS time */
#define PACKET_46       0x46    /* Receiver Health */

#define DLE 0x10
#define ETX 0x03

/* parse states */
#define TSIP_PARSED_EMPTY       0
#define TSIP_PARSED_FULL        1
#define TSIP_PARSED_DLE_1       2
#define TSIP_PARSED_DATA        3
#define TSIP_PARSED_DLE_2       4

/*
* Leap-Insert and Leap-Delete are encoded as follows:
*      PALISADE_UTC_TIME set   and PALISADE_LEAP_PENDING set: INSERT leap
*/

#define PALISADE_LEAP_INPROGRESS 0x08 /* This is the leap flag                  */
#define PALISADE_LEAP_WARNING    0x04 /* GPS Leap Warning (see ICD-200) */
#define PALISADE_LEAP_PENDING    0x02 /* Leap Pending (24 hours)                */
#define PALISADE_UTC_TIME        0x01 /* UTC time available                             */

#define mb(_X_) (up->rpt_buf[(_X_ + 1)]) /* shortcut for buffer access  */

/* Conversion Definitions */
#define GPS_PI          (3.1415926535898)
#define R2D             (180.0/GPS_PI)

/*
* Structure for build data packets for send (thunderbolt uses it only)
* taken from Markus Prosch
*/
struct packettx
{
       short   size;
       u_char *data;
};

/*
* Palisade unit control structure.
*/
struct palisade_unit {
       short           unit;           /* NTP refclock unit number */
       int             polled;         /* flag to detect noreplies */
       char            leap_status;    /* leap second flag */
       char            rpt_status;     /* TSIP Parser State */
       short           rpt_cnt;        /* TSIP packet length so far */
       char            rpt_buf[BMAX];  /* packet assembly buffer */
       int             type;           /* Clock mode type */
       int             month;          /* for LEAP filter */
};

/*
* Function prototypes
*/

static  int     palisade_start          (int, struct peer *);
static  void    palisade_shutdown       (int, struct peer *);
static  void    palisade_receive        (struct peer *);
static  void    palisade_poll           (int, struct peer *);
static  void    palisade_io             (struct recvbuf *);
int             palisade_configure      (int, struct peer *);
int             TSIP_decode             (struct peer *);
long            HW_poll                 (struct refclockproc *);
static  double  getdbl                  (u_char *);
static  short   getint                  (u_char *);
static  int32   getlong                 (u_char *);
static  int32   getsingle               (u_char *);


static  void    sendcmd                 (struct packettx *buffer, int c);
static  void    sendsupercmd            (struct packettx *buffer, int c1, int c2);
static  void    sendbyte                (struct packettx *buffer, int b);
static  void    sendint                 (struct packettx *buffer, int a);
static  int     sendetx                 (struct packettx *buffer, int fd);
static  void    init_thunderbolt        (int fd);
static  void    init_acutime            (int fd);

#endif /* REFCLOCK_PALISADE_H */

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