3  * Copyright (c) David L. Mills 1999-2000			       *
19  * This header file complies with "Pulse-Per-Second API for UNIX-like  *
37  *		based on code by Poul-Henning Kamp <phk@FreeBSD.org>   *
41  * "THE BEER-WARE LICENSE" (Revision 42):                              *
45  * in return.	Poul-Henning Kamp				       *
58  * means the bit is set.
66 #define PPS_JAN_1970	2208988800UL	/* 1970 - 1900 in seconds */
73 			(x).tv_nsec -= PPS_NANOSECOND; \
77 			(x).tv_sec--; \
126 #define PPS_KC_HARDPPS_PLL	1	/* phase-lock mode */
127 #define PPS_KC_HARDPPS_FLL	2	/* frequency-lock mode */
138 } ntp_fp_t;				/* NTP-compatible time stamp */
182  * The following definitions are architecture-dependent
190 	pps_params_t params;	/* PPS parameters set by user */
198  *------ Here begins the implementation-specific part! ------
221 		return (-1);	/* null pointer */  in time_pps_create()
231 		return (-1);	/* what, no memory? */  in time_pps_create()
235 	(*handle)->filedes = filedes;  in time_pps_create()
236 	(*handle)->params.api_version = PPS_API_VERS_1;  in time_pps_create()
237 	(*handle)->params.mode = PPS_CAPTUREASSERT | PPS_TSFMT_TSPEC;  in time_pps_create()
256 		return (-1);	/* bad handle */  in time_pps_destroy()
263  * set parameters for handle
274 	 * Check for valid arguments and set parameters.  in time_pps_setparams()
279 		return (-1);	/* bad handle */  in time_pps_setparams()
284 		return (-1);	/* bad argument */  in time_pps_setparams()
289 	 * I require `api_version' to be set!  in time_pps_setparams()
292 	if (params->api_version != PPS_API_VERS_1) {  in time_pps_setparams()
294 		return(-1);  in time_pps_setparams()
301 	mode_in = params->mode;  in time_pps_setparams()
303 	/* turn off read-only bits */  in time_pps_setparams()
311 		return(-1);  in time_pps_setparams()
318 	mode = handle->params.mode;  in time_pps_setparams()
319 	memcpy(&handle->params, params, sizeof(pps_params_t));  in time_pps_setparams()
320 	handle->params.api_version = PPS_API_VERS_1;  in time_pps_setparams()
321 	handle->params.mode = mode | mode_in;  in time_pps_setparams()
341 		return (-1);	/* bad handle */  in time_pps_getparams()
346 		return (-1);	/* bad argument */  in time_pps_getparams()
349 	memcpy(params, &handle->params, sizeof(pps_params_t));  in time_pps_getparams()
369 		return (-1);	/* bad handle */  in time_pps_getcap()
374 		return (-1);	/* bad argument */  in time_pps_getcap()
392 	struct timeval tv;  in time_pps_fetch()  local
401 		return (-1);	/* bad handle */  in time_pps_fetch()
406 		return (-1);	/* bad argument */  in time_pps_fetch()
410 	 * nb. PPS_CANWAIT is NOT set by the implementation, we can totally  in time_pps_fetch()
420 	if (!handle->params.mode & PPS_CAPTUREASSERT) {  in time_pps_fetch()
425 	if (ioctl(instance->filedes, TIOCDCDTIMESTAMP, &tv) < 0) {  in time_pps_fetch()
428 		return(-1);  in time_pps_fetch()
435 	if (tv.tv_sec != handle->tv_save.tv_sec || tv.tv_usec != handle->tv_save.tv_usec) {  in time_pps_fetch()
436 		handle->tv_save = tv;  in time_pps_fetch()
437 		handle->serial++;  in time_pps_fetch()
445 	infobuf.assert_sequence = handle->serial;  in time_pps_fetch()
446 	infobuf.assert_timestamp.tv_sec = tv.tv_sec;  in time_pps_fetch()
447 	infobuf.assert_timestamp.tv_nsec = tv.tv_usec * 1000;  in time_pps_fetch()
449 	if (handle->params.mode & PPS_OFFSETASSERT) {  in time_pps_fetch()
450 		infobuf.assert_timestamp.tv_sec  += handle->params.assert_offset.tv_sec;  in time_pps_fetch()
451 		infobuf.assert_timestamp.tv_nsec += handle->params.assert_offset.tv_nsec;  in time_pps_fetch()
469 		return (-1);  in time_pps_fetch()
472 	infobuf.current_mode = handle->params.mode;  in time_pps_fetch()
493 		return (-1);	/* bad handle */  in time_pps_kcbind()
497 		return (-1);	/* must be superuser */  in time_pps_kcbind()
500 	return(-1);  in time_pps_kcbind()