/* refclock_bancomm.c - clock driver for the Datum/Bancomm bc635VME * Time and Frequency Processor. It requires the BANCOMM bc635VME/ * bc350VXI Time and Frequency Processor Module Driver for SunOS4.x * and SunOS5.x UNIX Systems. It has been tested on a UltraSparc * IIi-cEngine running Solaris 2.6. * * Author(s): Ganesh Ramasivan & Gary Cliff, Computing Devices Canada, * Ottawa, Canada * * Date: July 1999 * * Note(s): The refclock type has been defined as 16. * * This program has been modelled after the Bancomm driver * originally written by R. Schmidt of Time Service, U.S. * Naval Observatory for a HP-UX machine. Since the original * authors no longer plan to maintain this code, all * references to the HP-UX vme2 driver subsystem bave been * removed. Functions vme_report_event(), vme_receive(), * vme_control() and vme_buginfo() have been deleted because * they are no longer being used. * * The time on the bc635 TFP must be set to GMT due to the * fact that NTP makes use of GMT for all its calculations. * * Installation of the Datum/Bancomm driver creates the * device file /dev/btfp0 * * 04/28/2005 Rob Neal * Modified to add support for Symmetricom bc637PCI-U Time & * Frequency Processor. * Card bus type (VME/VXI or PCI) and environment are specified via the * "mode" keyword on the server command in ntp.conf. * server 127.127.16.u prefer mode m (...) * Modes currently supported are * 1 : FreeBSD PCI 635/637. * 2 : Linux or Windows PCI 635/637. * not specified, or other number: * : Assumed to be VME/VXI legacy Bancomm card on Solaris. * Linux and Windows platforms require Symmetricoms' proprietary driver * for the TFP card. * Tested on FreeBSD 5.3 with a 637 card. */ #ifdef HAVE_CONFIG_H #include #endif #if defined(REFCLOCK) && defined(CLOCK_BANC) #include "ntpd.h" #include "ntp_io.h" #include "ntp_refclock.h" #include "ntp_unixtime.h" #include "ntp_stdlib.h" #include #include #include /* STUFF BY RES */ struct btfp_time /* Structure for reading 5 time words */ /* in one ioctl(2) operation. */ { unsigned short btfp_time[5]; /* Time words 0,1,2,3, and 4. (16bit)*/ }; /* SunOS5 ioctl commands definitions.*/ #define BTFPIOC ( 'b'<< 8 ) #define IOCIO( l, n ) ( BTFPIOC | n ) #define IOCIOR( l, n, s ) ( BTFPIOC | n ) #define IOCIORN( l, n, s ) ( BTFPIOC | n ) #define IOCIOWN( l, n, s ) ( BTFPIOC | n ) /***** Simple ioctl commands *****/ #define RUNLOCK IOCIOR(b, 19, int ) /* Release Capture Lockout */ #define RCR0 IOCIOR(b, 22, int ) /* Read control register zero.*/ #define WCR0 IOCIOWN(b, 23, int) /* Write control register zero*/ /***** Compound ioctl commands *****/ /* Read all 5 time words in one call. */ #define READTIME IOCIORN(b, 32, sizeof( struct btfp_time )) #if defined(__FreeBSD__) #undef READTIME #define READTIME _IOR('u', 5, struct btfp_time ) #endif #define VMEFD "/dev/btfp0" struct vmedate { /* structure returned by get_vmetime.c */ unsigned short year; unsigned short day; unsigned short hr; unsigned short mn; unsigned short sec; long frac; unsigned short status; }; /* END OF STUFF FROM RES */ typedef void *SYMMT_PCI_HANDLE; /* * VME interface parameters. */ #define VMEPRECISION (-21) /* precision assumed (1 us) */ #define USNOREFID "BTFP" /* or whatever */ #define VMEREFID "BTFP" /* reference id */ #define VMEDESCRIPTION "Bancomm bc635 TFP" /* who we are */ #define VMEHSREFID 0x7f7f1000 /* 127.127.16.00 refid hi strata */ /* clock type 16 is used here */ #define GMT 0 /* hour offset from Greenwich */ /* * Imported from ntp_timer module */ extern u_long current_time; /* current time(s) */ /* * Imported from ntpd module */ extern volatile int debug; /* global debug flag */ /* * VME unit control structure. * Changes made to vmeunit structure. Most members are now available in the * new refclockproc structure in ntp_refclock.h - 07/99 - Ganesh Ramasivan */ struct vmeunit { struct vmedate vmedata; /* data returned from vme read */ u_long lasttime; /* last time clock heard from */ }; /* * Function prototypes */ static int vme_start (int, struct peer *); static void vme_shutdown (int, struct peer *); static void vme_receive (struct recvbuf *); static void vme_poll (int unit, struct peer *); struct vmedate *get_datumtime(struct vmedate *); void tvme_fill(struct vmedate *, uint32_t btm[2]); /* * Define the bc*() functions as weak so we can compile/link without them. * Only clients with the card will have the proprietary vendor device driver * and interface library needed for use on Linux/Windows platforms. */ extern uint32_t __attribute__ ((weak)) bcReadBinTime(SYMMT_PCI_HANDLE, uint32_t *, uint32_t*, uint8_t*); extern SYMMT_PCI_HANDLE __attribute__ ((weak)) bcStartPci(void); extern void __attribute__ ((weak)) bcStopPci(SYMMT_PCI_HANDLE); /* * Transfer vector */ struct refclock refclock_bancomm = { vme_start, /* start up driver */ vme_shutdown, /* shut down driver */ vme_poll, /* transmit poll message */ noentry, /* not used (old vme_control) */ noentry, /* initialize driver */ noentry, /* not used (old vme_buginfo) */ NOFLAGS /* not used */ }; int fd_vme; /* file descriptor for ioctls */ int regvalue; int tfp_type; /* mode selector, indicate platform and driver interface */ SYMMT_PCI_HANDLE stfp_handle; /* * vme_start - open the VME device and initialize data for processing */ static int vme_start( int unit, struct peer *peer ) { register struct vmeunit *vme; struct refclockproc *pp; int dummy; char vmedev[20]; tfp_type = (int)(peer->ttl); switch (tfp_type) { case 1: break; case 2: stfp_handle = bcStartPci(); /* init the card in lin/win */ break; default: break; } /* * Open VME device */ #ifdef DEBUG printf("Opening DATUM VME DEVICE \n"); #endif if ( (fd_vme = open(VMEFD, O_RDWR)) < 0) { msyslog(LOG_ERR, "vme_start: failed open of %s: %m", vmedev); return (0); } else { switch (tfp_type) { case 1: break; case 2: break; default: /* Release capture lockout in case it was set before. */ if( ioctl( fd_vme, RUNLOCK, &dummy ) ) msyslog(LOG_ERR, "vme_start: RUNLOCK failed %m"); regvalue = 0; /* More esoteric stuff to do... */ if( ioctl( fd_vme, WCR0, ®value ) ) msyslog(LOG_ERR, "vme_start: WCR0 failed %m"); break; } } /* * Allocate unit structure */ vme = (struct vmeunit *)emalloc(sizeof(struct vmeunit)); bzero((char *)vme, sizeof(struct vmeunit)); /* * Set up the structures */ pp = peer->procptr; pp->unitptr = (caddr_t) vme; pp->timestarted = current_time; pp->io.clock_recv = vme_receive; pp->io.srcclock = (caddr_t)peer; pp->io.datalen = 0; pp->io.fd = fd_vme; /* * All done. Initialize a few random peer variables, then * return success. Note that root delay and root dispersion are * always zero for this clock. */ peer->precision = VMEPRECISION; memcpy(&pp->refid, USNOREFID,4); return (1); } /* * vme_shutdown - shut down a VME clock */ static void vme_shutdown( int unit, struct peer *peer ) { register struct vmeunit *vme; struct refclockproc *pp; /* * Tell the I/O module to turn us off. We're history. */ pp = peer->procptr; vme = (struct vmeunit *)pp->unitptr; io_closeclock(&pp->io); pp->unitptr = NULL; free(vme); if (tfp_type == 2) bcStopPci(stfp_handle); } /* * vme_receive - receive data from the VME device. * * Note: This interface would be interrupt-driven. We don't use that * now, but include a dummy routine for possible future adventures. */ static void vme_receive( struct recvbuf *rbufp ) { } /* * vme_poll - called by the transmit procedure */ static void vme_poll( int unit, struct peer *peer ) { struct vmedate *tptr; struct vmeunit *vme; struct refclockproc *pp; time_t tloc; struct tm *tadr; pp = peer->procptr; vme = (struct vmeunit *)pp->unitptr; /* Here is the structure */ tptr = &vme->vmedata; if ((tptr = get_datumtime(tptr)) == NULL ) { refclock_report(peer, CEVNT_BADREPLY); return; } get_systime(&pp->lastrec); pp->polls++; vme->lasttime = current_time; /* * Get VME time and convert to timestamp format. * The year must come from the system clock. */ time(&tloc); tadr = gmtime(&tloc); tptr->year = (unsigned short)(tadr->tm_year + 1900); sprintf(pp->a_lastcode, "%3.3d %2.2d:%2.2d:%2.2d.%.6ld %1d", tptr->day, tptr->hr, tptr->mn, tptr->sec, tptr->frac, tptr->status); pp->lencode = (u_short) strlen(pp->a_lastcode); pp->day = tptr->day; pp->hour = tptr->hr; pp->minute = tptr->mn; pp->second = tptr->sec; pp->nsec = tptr->frac; #ifdef DEBUG if (debug) printf("pp: %3d %02d:%02d:%02d.%06ld %1x\n", pp->day, pp->hour, pp->minute, pp->second, pp->nsec, tptr->status); #endif if (tptr->status ) { /* Status 0 is locked to ref., 1 is not */ refclock_report(peer, CEVNT_BADREPLY); return; } /* * Now, compute the reference time value. Use the heavy * machinery for the seconds and the millisecond field for the * fraction when present. If an error in conversion to internal * format is found, the program declares bad data and exits. * Note that this code does not yet know how to do the years and * relies on the clock-calendar chip for sanity. */ if (!refclock_process(pp)) { refclock_report(peer, CEVNT_BADTIME); return; } pp->lastref = pp->lastrec; refclock_receive(peer); record_clock_stats(&peer->srcadr, pp->a_lastcode); } struct vmedate * get_datumtime(struct vmedate *time_vme) { char cbuf[7]; struct btfp_time vts; uint32_t btm[2]; uint8_t dmy; if ( time_vme == (struct vmedate *)NULL) { time_vme = (struct vmedate *)malloc(sizeof(struct vmedate )); } switch (tfp_type) { case 1: /* BSD, PCI, 2 32bit time words */ if (ioctl(fd_vme, READTIME, &btm)) { msyslog(LOG_ERR, "get_bc63x error: %m"); return(NULL); } tvme_fill(time_vme, btm); break; case 2: /* Linux/Windows, PCI, 2 32bit time words */ if (bcReadBinTime(stfp_handle, &btm[1], &btm[0], &dmy) == 0) { msyslog(LOG_ERR, "get_datumtime error: %m"); return(NULL); } tvme_fill(time_vme, btm); break; default: /* legacy bancomm card */ if (ioctl(fd_vme, READTIME, &vts)) { msyslog(LOG_ERR, "get_datumtime error: %m"); return(NULL); } /* Get day */ sprintf(cbuf,"%3.3x", ((vts.btfp_time[ 0 ] & 0x000f) <<8) + ((vts.btfp_time[ 1 ] & 0xff00) >> 8)); time_vme->day = (unsigned short)atoi(cbuf); /* Get hour */ sprintf(cbuf,"%2.2x", vts.btfp_time[ 1 ] & 0x00ff); time_vme->hr = (unsigned short)atoi(cbuf); /* Get minutes */ sprintf(cbuf,"%2.2x", (vts.btfp_time[ 2 ] & 0xff00) >>8); time_vme->mn = (unsigned short)atoi(cbuf); /* Get seconds */ sprintf(cbuf,"%2.2x", vts.btfp_time[ 2 ] & 0x00ff); time_vme->sec = (unsigned short)atoi(cbuf); /* Get microseconds. Yes, we ignore the 0.1 microsecond digit so we can use the TVTOTSF function later on...*/ sprintf(cbuf,"%4.4x%2.2x", vts.btfp_time[ 3 ], vts.btfp_time[ 4 ]>>8); time_vme->frac = (u_long) atoi(cbuf); /* Get status bit */ time_vme->status = (vts.btfp_time[0] & 0x0010) >>4; break; } if (time_vme->status) return ((void *)NULL); else return (time_vme); } /* Assign values to time_vme struct. Mostly for readability */ void tvme_fill(struct vmedate *time_vme, uint32_t btm[2]) { struct tm maj; uint32_t dmaj, dmin; dmaj = btm[1]; /* syntax sugar */ dmin = btm[0]; gmtime_r(&dmaj, &maj); time_vme->day = maj.tm_yday+1; time_vme->hr = maj.tm_hour; time_vme->mn = maj.tm_min; time_vme->sec = maj.tm_sec; time_vme->frac = (dmin & 0x000fffff) * 1000; time_vme->frac += ((dmin & 0x00f00000) >> 20) * 100; time_vme->status = (dmin & 0x01000000) >> 24; return; } #else int refclock_bancomm_bs; #endif /* REFCLOCK */