1 /* refclock_bancomm.c - clock driver for the Datum/Bancomm bc635VME
2 * Time and Frequency Processor. It requires the BANCOMM bc635VME/
3 * bc350VXI Time and Frequency Processor Module Driver for SunOS4.x
4 * and SunOS5.x UNIX Systems. It has been tested on a UltraSparc
5 * IIi-cEngine running Solaris 2.6.
7 * Author(s): Ganesh Ramasivan & Gary Cliff, Computing Devices Canada,
12 * Note(s): The refclock type has been defined as 16.
14 * This program has been modelled after the Bancomm driver
15 * originally written by R. Schmidt of Time Service, U.S.
16 * Naval Observatory for a HP-UX machine. Since the original
17 * authors no longer plan to maintain this code, all
18 * references to the HP-UX vme2 driver subsystem bave been
19 * removed. Functions vme_report_event(), vme_receive(),
20 * vme_control() and vme_buginfo() have been deleted because
21 * they are no longer being used.
24 * Modified to add support for Symmetricom bc637PCI-U Time &
25 * Frequency Processor.
26 * 2/21/2007 Ali Ghorashi
27 * Modified to add support for Symmetricom bc637PCI-U Time &
28 * Frequency Processor on Solaris.
29 * Tested on Solaris 10 with a bc635 card.
31 * Card bus type (VME/VXI or PCI) and environment are specified via the
32 * "mode" keyword on the server command in ntp.conf.
33 * server 127.127.16.u prefer mode M
34 * where u is the id (usually 0) of the entry in /dev (/dev/stfp0)
36 * and M is one of the following modes:
37 * 1 : FreeBSD PCI 635/637.
38 * 2 : Linux or Windows PCI 635/637.
39 * 3 : Solaris PCI 635/637
40 * not specified, or other number:
41 * : Assumed to be VME/VXI legacy Bancomm card on Solaris.
42 * Linux and Windows platforms require Symmetricoms' proprietary driver
44 * Solaris requires Symmetricom's driver and its header file (freely distributed) to
45 * be installed and running.
52 #if defined(REFCLOCK) && defined(CLOCK_BANC)
56 #include "ntp_refclock.h"
57 #include "ntp_unixtime.h"
58 #include "ntp_stdlib.h"
64 struct btfp_time /* Structure for reading 5 time words */
65 /* in one ioctl(2) operation. */
67 unsigned short btfp_time[5]; /* Time words 0,1,2,3, and 4. (16bit)*/
69 /* SunOS5 ioctl commands definitions.*/
70 #define BTFPIOC ( 'b'<< 8 )
71 #define IOCIO( l, n ) ( BTFPIOC | n )
72 #define IOCIOR( l, n, s ) ( BTFPIOC | n )
73 #define IOCIORN( l, n, s ) ( BTFPIOC | n )
74 #define IOCIOWN( l, n, s ) ( BTFPIOC | n )
76 /***** Simple ioctl commands *****/
77 #define RUNLOCK IOCIOR(b, 19, int ) /* Release Capture Lockout */
78 #define RCR0 IOCIOR(b, 22, int ) /* Read control register zero.*/
79 #define WCR0 IOCIOWN(b, 23, int) /* Write control register zero*/
80 /***** Compound ioctl commands *****/
82 /* Read all 5 time words in one call. */
83 #define READTIME IOCIORN(b, 32, sizeof( struct btfp_time ))
85 #if defined(__FreeBSD__)
87 #define READTIME _IOR('u', 5, struct btfp_time )
90 /* Solaris specific section */
105 int32_t usec; /* usec 0 - 999999 */
106 int32_t hnsec; /* hnsec 0 - 9 (hundreds of nsecs) */
110 #define SELTIMEFORMAT 2
111 # define TIME_DECIMAL 0
112 # define TIME_BINARY 1
117 #endif /** __sun___ **/
118 /* end solaris specific section */
120 struct vmedate { /* structure returned by get_vmetime.c */
127 unsigned short status;
130 typedef void *SYMMT_PCI_HANDLE;
133 * VME interface parameters.
135 #define VMEPRECISION (-21) /* precision assumed (1 us) */
136 #define USNOREFID "BTFP" /* or whatever */
137 #define VMEREFID "BTFP" /* reference id */
138 #define VMEDESCRIPTION "Bancomm bc635 TFP" /* who we are */
139 #define VMEHSREFID 0x7f7f1000 /* 127.127.16.00 refid hi strata */
140 /* clock type 16 is used here */
141 #define GMT 0 /* hour offset from Greenwich */
144 * Imported from ntp_timer module
146 extern u_long current_time; /* current time(s) */
149 * Imported from ntpd module
151 extern volatile int debug; /* global debug flag */
154 * VME unit control structure.
155 * Changes made to vmeunit structure. Most members are now available in the
156 * new refclockproc structure in ntp_refclock.h - 07/99 - Ganesh Ramasivan
159 struct vmedate vmedata; /* data returned from vme read */
160 u_long lasttime; /* last time clock heard from */
164 * Function prototypes
166 static int vme_start (int, struct peer *);
167 static void vme_shutdown (int, struct peer *);
168 static void vme_receive (struct recvbuf *);
169 static void vme_poll (int unit, struct peer *);
170 struct vmedate *get_datumtime(struct vmedate *);
171 void tvme_fill(struct vmedate *, uint32_t btm[2]);
172 void stfp_time2tvme(struct vmedate *time_vme, struct stfp_time *stfp);
173 inline const char *DEVICE_NAME(int n);
177 * Define the bc*() functions as weak so we can compile/link without them.
178 * Only clients with the card will have the proprietary vendor device driver
179 * and interface library needed for use on Linux/Windows platforms.
181 extern uint32_t __attribute__ ((weak)) bcReadBinTime(SYMMT_PCI_HANDLE, uint32_t *, uint32_t*, uint8_t*);
182 extern SYMMT_PCI_HANDLE __attribute__ ((weak)) bcStartPci(void);
183 extern void __attribute__ ((weak)) bcStopPci(SYMMT_PCI_HANDLE);
188 struct refclock refclock_bancomm = {
189 vme_start, /* start up driver */
190 vme_shutdown, /* shut down driver */
191 vme_poll, /* transmit poll message */
192 noentry, /* not used (old vme_control) */
193 noentry, /* initialize driver */
194 noentry, /* not used (old vme_buginfo) */
195 NOFLAGS /* not used */
198 int fd_vme; /* file descriptor for ioctls */
200 int tfp_type; /* mode selector, indicate platform and driver interface */
201 SYMMT_PCI_HANDLE stfp_handle;
204 * this macro returns the device name based on
205 * the platform we are running on and the device number
208 inline const char *DEVICE_NAME(int n) {static char s[20]={0}; snprintf(s,19,"/dev/stfp%d",n);return s;}
210 inline const char* DEVICE_NAME(int n) {static char s[20]={0}; snprintf(s,19,"/dev/btfp%d",n);return s;}
214 * vme_start - open the VME device and initialize data for processing
222 register struct vmeunit *vme;
223 struct refclockproc *pp;
227 tfp_type = (int)(peer->ttl);
233 stfp_handle = bcStartPci(); /* init the card in lin/win */
243 printf("Opening DATUM DEVICE %s\n",DEVICE_NAME(peer->refclkunit));
245 if ( (fd_vme = open(DEVICE_NAME(peer->refclkunit), O_RDWR)) < 0) {
246 msyslog(LOG_ERR, "vme_start: failed open of %s: %m", vmedev);
255 /* Release capture lockout in case it was set before. */
256 if( ioctl( fd_vme, RUNLOCK, &dummy ) )
257 msyslog(LOG_ERR, "vme_start: RUNLOCK failed %m");
259 regvalue = 0; /* More esoteric stuff to do... */
260 if( ioctl( fd_vme, WCR0, ®value ) )
261 msyslog(LOG_ERR, "vme_start: WCR0 failed %m");
267 * Allocate unit structure
269 vme = (struct vmeunit *)emalloc(sizeof(struct vmeunit));
270 bzero((char *)vme, sizeof(struct vmeunit));
274 * Set up the structures
277 pp->unitptr = (caddr_t) vme;
278 pp->timestarted = current_time;
280 pp->io.clock_recv = vme_receive;
281 pp->io.srcclock = (caddr_t)peer;
286 * All done. Initialize a few random peer variables, then
287 * return success. Note that root delay and root dispersion are
288 * always zero for this clock.
290 peer->precision = VMEPRECISION;
291 memcpy(&pp->refid, USNOREFID,4);
297 * vme_shutdown - shut down a VME clock
305 register struct vmeunit *vme;
306 struct refclockproc *pp;
309 * Tell the I/O module to turn us off. We're history.
312 vme = (struct vmeunit *)pp->unitptr;
313 io_closeclock(&pp->io);
318 bcStopPci(stfp_handle);
323 * vme_receive - receive data from the VME device.
325 * Note: This interface would be interrupt-driven. We don't use that
326 * now, but include a dummy routine for possible future adventures.
330 struct recvbuf *rbufp
337 * vme_poll - called by the transmit procedure
345 struct vmedate *tptr;
347 struct refclockproc *pp;
352 vme = (struct vmeunit *)pp->unitptr; /* Here is the structure */
354 tptr = &vme->vmedata;
355 if ((tptr = get_datumtime(tptr)) == NULL ) {
356 refclock_report(peer, CEVNT_BADREPLY);
360 get_systime(&pp->lastrec);
362 vme->lasttime = current_time;
365 * Get VME time and convert to timestamp format.
366 * The year must come from the system clock.
370 tadr = gmtime(&tloc);
371 tptr->year = (unsigned short)(tadr->tm_year + 1900);
373 snprintf(pp->a_lastcode,
374 sizeof(pp->a_lastcode),
375 "%3.3d %2.2d:%2.2d:%2.2d.%.6ld %1d",
383 pp->lencode = (u_short) strlen(pp->a_lastcode);
387 pp->minute = tptr->mn;
388 pp->second = tptr->sec;
389 pp->nsec = tptr->frac;
393 printf("pp: %3d %02d:%02d:%02d.%06ld %1x\n",
394 pp->day, pp->hour, pp->minute, pp->second,
395 pp->nsec, tptr->status);
397 if (tptr->status ) { /* Status 0 is locked to ref., 1 is not */
398 refclock_report(peer, CEVNT_BADREPLY);
403 * Now, compute the reference time value. Use the heavy
404 * machinery for the seconds and the millisecond field for the
405 * fraction when present. If an error in conversion to internal
406 * format is found, the program declares bad data and exits.
407 * Note that this code does not yet know how to do the years and
408 * relies on the clock-calendar chip for sanity.
410 if (!refclock_process(pp)) {
411 refclock_report(peer, CEVNT_BADTIME);
414 pp->lastref = pp->lastrec;
415 refclock_receive(peer);
416 record_clock_stats(&peer->srcadr, pp->a_lastcode);
420 get_datumtime(struct vmedate *time_vme)
423 struct btfp_time vts;
426 struct stfp_time stfpm;
428 if (time_vme == NULL)
429 time_vme = emalloc(sizeof(*time_vme));
432 case 1: /* BSD, PCI, 2 32bit time words */
433 if (ioctl(fd_vme, READTIME, &btm)) {
434 msyslog(LOG_ERR, "get_bc63x error: %m");
437 tvme_fill(time_vme, btm);
440 case 2: /* Linux/Windows, PCI, 2 32bit time words */
441 if (bcReadBinTime(stfp_handle, &btm[1], &btm[0], &dmy) == 0) {
442 msyslog(LOG_ERR, "get_datumtime error: %m");
445 tvme_fill(time_vme, btm);
448 case 3: /** solaris **/
449 memset(&stfpm,0,sizeof(stfpm));
451 /* we need the time in decimal format */
452 /* Here we rudely assume that we are the only user of the driver.
453 * Other programs will have to set their own time format before reading
456 if(ioctl (fd_vme, SELTIMEFORMAT, TIME_DECIMAL)){
457 msyslog(LOG_ERR, "Could not set time format\n");
461 if (ioctl(fd_vme, READTIME, &stfpm)) {
462 msyslog(LOG_ERR, "ioctl error: %m");
465 stfp_time2tvme(time_vme, &stfpm);
468 default: /* legacy bancomm card */
470 if (ioctl(fd_vme, READTIME, &vts)) {
472 "get_datumtime error: %m");
476 snprintf(cbuf, sizeof(cbuf), "%3.3x",
477 ((vts.btfp_time[ 0 ] & 0x000f) << 8) +
478 ((vts.btfp_time[ 1 ] & 0xff00) >> 8));
479 time_vme->day = (unsigned short)atoi(cbuf);
482 snprintf(cbuf, sizeof(cbuf), "%2.2x",
483 vts.btfp_time[ 1 ] & 0x00ff);
484 time_vme->hr = (unsigned short)atoi(cbuf);
487 snprintf(cbuf, sizeof(cbuf), "%2.2x",
488 (vts.btfp_time[ 2 ] & 0xff00) >> 8);
489 time_vme->mn = (unsigned short)atoi(cbuf);
492 snprintf(cbuf, sizeof(cbuf), "%2.2x",
493 vts.btfp_time[ 2 ] & 0x00ff);
494 time_vme->sec = (unsigned short)atoi(cbuf);
496 /* Get microseconds. Yes, we ignore the 0.1 microsecond digit so
497 we can use the TVTOTSF function later on...*/
499 snprintf(cbuf, sizeof(cbuf), "%4.4x%2.2x",
501 vts.btfp_time[ 4 ] >> 8);
502 time_vme->frac = (u_long) atoi(cbuf);
505 time_vme->status = (vts.btfp_time[0] & 0x0010) >> 4;
510 if (time_vme->status)
511 return ((void *)NULL);
515 /* Assign values to time_vme struct. Mostly for readability */
517 tvme_fill(struct vmedate *time_vme, uint32_t btm[2])
522 dmaj = btm[1]; /* syntax sugar */
525 gmtime_r(&dmaj, &maj);
526 time_vme->day = maj.tm_yday+1;
527 time_vme->hr = maj.tm_hour;
528 time_vme->mn = maj.tm_min;
529 time_vme->sec = maj.tm_sec;
530 time_vme->frac = (dmin & 0x000fffff) * 1000;
531 time_vme->frac += ((dmin & 0x00f00000) >> 20) * 100;
532 time_vme->status = (dmin & 0x01000000) >> 24;
537 /* Assign values to time_vme struct. Mostly for readability */
539 stfp_time2tvme(struct vmedate *time_vme, struct stfp_time *stfp)
542 time_vme->day = stfp->tm.tm_yday+1;
543 time_vme->hr = stfp->tm.tm_hour;
544 time_vme->mn = stfp->tm.tm_min;
545 time_vme->sec = stfp->tm.tm_sec;
546 time_vme->frac = stfp->usec*1000;
547 time_vme->frac += stfp->hnsec * 100;
548 time_vme->status = stfp->status;
552 int refclock_bancomm_bs;
553 #endif /* REFCLOCK */