[mirror_ubuntu-zesty-kernel.git] / Documentation / ptp / testptp.c

/*
 * PTP 1588 clock support - User space test program
 *
 * Copyright (C) 2010 OMICRON electronics GmbH
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include <errno.h>
#include <fcntl.h>
#include <math.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/timex.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>

#include <linux/ptp_clock.h>

#define DEVICE "/dev/ptp0"

#ifndef ADJ_SETOFFSET
#define ADJ_SETOFFSET 0x0100
#endif

#ifndef CLOCK_INVALID
#define CLOCK_INVALID -1
#endif

/* When glibc offers the syscall, this will go away. */
#include <sys/syscall.h>
static int clock_adjtime(clockid_t id, struct timex *tx)
{
	return syscall(__NR_clock_adjtime, id, tx);
}

static clockid_t get_clockid(int fd)
{
#define CLOCKFD 3
#define FD_TO_CLOCKID(fd)	((~(clockid_t) (fd) << 3) | CLOCKFD)

	return FD_TO_CLOCKID(fd);
}

static void handle_alarm(int s)
{
	printf("received signal %d\n", s);
}

static int install_handler(int signum, void (*handler)(int))
{
	struct sigaction action;
	sigset_t mask;

	/* Unblock the signal. */
	sigemptyset(&mask);
	sigaddset(&mask, signum);
	sigprocmask(SIG_UNBLOCK, &mask, NULL);

	/* Install the signal handler. */
	action.sa_handler = handler;
	action.sa_flags = 0;
	sigemptyset(&action.sa_mask);
	sigaction(signum, &action, NULL);

	return 0;
}

static long ppb_to_scaled_ppm(int ppb)
{
	/*
	 * The 'freq' field in the 'struct timex' is in parts per
	 * million, but with a 16 bit binary fractional field.
	 * Instead of calculating either one of
	 *
	 *    scaled_ppm = (ppb / 1000) << 16  [1]
	 *    scaled_ppm = (ppb << 16) / 1000  [2]
	 *
	 * we simply use double precision math, in order to avoid the
	 * truncation in [1] and the possible overflow in [2].
	 */
	return (long) (ppb * 65.536);
}

static int64_t pctns(struct ptp_clock_time *t)
{
	return t->sec * 1000000000LL + t->nsec;
}

static void usage(char *progname)
{
	fprintf(stderr,
		"usage: %s [options]\n"
		" -a val     request a one-shot alarm after 'val' seconds\n"
		" -A val     request a periodic alarm every 'val' seconds\n"
		" -c         query the ptp clock's capabilities\n"
		" -d name    device to open\n"
		" -e val     read 'val' external time stamp events\n"
		" -f val     adjust the ptp clock frequency by 'val' ppb\n"
		" -g         get the ptp clock time\n"
		" -h         prints this message\n"
		" -i val     index for event/trigger\n"
		" -k val     measure the time offset between system and phc clock\n"
		"            for 'val' times (Maximum 25)\n"
		" -l         list the current pin configuration\n"
		" -L pin,val configure pin index 'pin' with function 'val'\n"
		"            the channel index is taken from the '-i' option\n"
		"            'val' specifies the auxiliary function:\n"
		"            0 - none\n"
		"            1 - external time stamp\n"
		"            2 - periodic output\n"
		" -p val     enable output with a period of 'val' nanoseconds\n"
		" -P val     enable or disable (val=1|0) the system clock PPS\n"
		" -s         set the ptp clock time from the system time\n"
		" -S         set the system time from the ptp clock time\n"
		" -t val     shift the ptp clock time by 'val' seconds\n"
		" -T val     set the ptp clock time to 'val' seconds\n",
		progname);
}

int main(int argc, char *argv[])
{
	struct ptp_clock_caps caps;
	struct ptp_extts_event event;
	struct ptp_extts_request extts_request;
	struct ptp_perout_request perout_request;
	struct ptp_pin_desc desc;
	struct timespec ts;
	struct timex tx;

	static timer_t timerid;
	struct itimerspec timeout;
	struct sigevent sigevent;

	struct ptp_clock_time *pct;
	struct ptp_sys_offset *sysoff;


	char *progname;
	int i, c, cnt, fd;

	char *device = DEVICE;
	clockid_t clkid;
	int adjfreq = 0x7fffffff;
	int adjtime = 0;
	int capabilities = 0;
	int extts = 0;
	int gettime = 0;
	int index = 0;
	int list_pins = 0;
	int oneshot = 0;
	int pct_offset = 0;
	int n_samples = 0;
	int periodic = 0;
	int perout = -1;
	int pin_index = -1, pin_func;
	int pps = -1;
	int seconds = 0;
	int settime = 0;

	int64_t t1, t2, tp;
	int64_t interval, offset;

	progname = strrchr(argv[0], '/');
	progname = progname ? 1+progname : argv[0];
	while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghi:k:lL:p:P:sSt:T:v"))) {
		switch (c) {
		case 'a':
			oneshot = atoi(optarg);
			break;
		case 'A':
			periodic = atoi(optarg);
			break;
		case 'c':
			capabilities = 1;
			break;
		case 'd':
			device = optarg;
			break;
		case 'e':
			extts = atoi(optarg);
			break;
		case 'f':
			adjfreq = atoi(optarg);
			break;
		case 'g':
			gettime = 1;
			break;
		case 'i':
			index = atoi(optarg);
			break;
		case 'k':
			pct_offset = 1;
			n_samples = atoi(optarg);
			break;
		case 'l':
			list_pins = 1;
			break;
		case 'L':
			cnt = sscanf(optarg, "%d,%d", &pin_index, &pin_func);
			if (cnt != 2) {
				usage(progname);
				return -1;
			}
			break;
		case 'p':
			perout = atoi(optarg);
			break;
		case 'P':
			pps = atoi(optarg);
			break;
		case 's':
			settime = 1;
			break;
		case 'S':
			settime = 2;
			break;
		case 't':
			adjtime = atoi(optarg);
			break;
		case 'T':
			settime = 3;
			seconds = atoi(optarg);
			break;
		case 'h':
			usage(progname);
			return 0;
		case '?':
		default:
			usage(progname);
			return -1;
		}
	}

	fd = open(device, O_RDWR);
	if (fd < 0) {
		fprintf(stderr, "opening %s: %s\n", device, strerror(errno));
		return -1;
	}

	clkid = get_clockid(fd);
	if (CLOCK_INVALID == clkid) {
		fprintf(stderr, "failed to read clock id\n");
		return -1;
	}

	if (capabilities) {
		if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
			perror("PTP_CLOCK_GETCAPS");
		} else {
			printf("capabilities:\n"
			       "  %d maximum frequency adjustment (ppb)\n"
			       "  %d programmable alarms\n"
			       "  %d external time stamp channels\n"
			       "  %d programmable periodic signals\n"
			       "  %d pulse per second\n"
			       "  %d programmable pins\n",
			       caps.max_adj,
			       caps.n_alarm,
			       caps.n_ext_ts,
			       caps.n_per_out,
			       caps.pps,
			       caps.n_pins);
		}
	}

	if (0x7fffffff != adjfreq) {
		memset(&tx, 0, sizeof(tx));
		tx.modes = ADJ_FREQUENCY;
		tx.freq = ppb_to_scaled_ppm(adjfreq);
		if (clock_adjtime(clkid, &tx)) {
			perror("clock_adjtime");
		} else {
			puts("frequency adjustment okay");
		}
	}

	if (adjtime) {
		memset(&tx, 0, sizeof(tx));
		tx.modes = ADJ_SETOFFSET;
		tx.time.tv_sec = adjtime;
		tx.time.tv_usec = 0;
		if (clock_adjtime(clkid, &tx) < 0) {
			perror("clock_adjtime");
		} else {
			puts("time shift okay");
		}
	}

	if (gettime) {
		if (clock_gettime(clkid, &ts)) {
			perror("clock_gettime");
		} else {
			printf("clock time: %ld.%09ld or %s",
			       ts.tv_sec, ts.tv_nsec, ctime(&ts.tv_sec));
		}
	}

	if (settime == 1) {
		clock_gettime(CLOCK_REALTIME, &ts);
		if (clock_settime(clkid, &ts)) {
			perror("clock_settime");
		} else {
			puts("set time okay");
		}
	}

	if (settime == 2) {
		clock_gettime(clkid, &ts);
		if (clock_settime(CLOCK_REALTIME, &ts)) {
			perror("clock_settime");
		} else {
			puts("set time okay");
		}
	}

	if (settime == 3) {
		ts.tv_sec = seconds;
		ts.tv_nsec = 0;
		if (clock_settime(clkid, &ts)) {
			perror("clock_settime");
		} else {
			puts("set time okay");
		}
	}

	if (extts) {
		memset(&extts_request, 0, sizeof(extts_request));
		extts_request.index = index;
		extts_request.flags = PTP_ENABLE_FEATURE;
		if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
			perror("PTP_EXTTS_REQUEST");
			extts = 0;
		} else {
			puts("external time stamp request okay");
		}
		for (; extts; extts--) {
			cnt = read(fd, &event, sizeof(event));
			if (cnt != sizeof(event)) {
				perror("read");
				break;
			}
			printf("event index %u at %lld.%09u\n", event.index,
			       event.t.sec, event.t.nsec);
			fflush(stdout);
		}
		/* Disable the feature again. */
		extts_request.flags = 0;
		if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
			perror("PTP_EXTTS_REQUEST");
		}
	}

	if (list_pins) {
		int n_pins = 0;
		if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
			perror("PTP_CLOCK_GETCAPS");
		} else {
			n_pins = caps.n_pins;
		}
		for (i = 0; i < n_pins; i++) {
			desc.index = i;
			if (ioctl(fd, PTP_PIN_GETFUNC, &desc)) {
				perror("PTP_PIN_GETFUNC");
				break;
			}
			printf("name %s index %u func %u chan %u\n",
			       desc.name, desc.index, desc.func, desc.chan);
		}
	}

	if (oneshot) {
		install_handler(SIGALRM, handle_alarm);
		/* Create a timer. */
		sigevent.sigev_notify = SIGEV_SIGNAL;
		sigevent.sigev_signo = SIGALRM;
		if (timer_create(clkid, &sigevent, &timerid)) {
			perror("timer_create");
			return -1;
		}
		/* Start the timer. */
		memset(&timeout, 0, sizeof(timeout));
		timeout.it_value.tv_sec = oneshot;
		if (timer_settime(timerid, 0, &timeout, NULL)) {
			perror("timer_settime");
			return -1;
		}
		pause();
		timer_delete(timerid);
	}

	if (periodic) {
		install_handler(SIGALRM, handle_alarm);
		/* Create a timer. */
		sigevent.sigev_notify = SIGEV_SIGNAL;
		sigevent.sigev_signo = SIGALRM;
		if (timer_create(clkid, &sigevent, &timerid)) {
			perror("timer_create");
			return -1;
		}
		/* Start the timer. */
		memset(&timeout, 0, sizeof(timeout));
		timeout.it_interval.tv_sec = periodic;
		timeout.it_value.tv_sec = periodic;
		if (timer_settime(timerid, 0, &timeout, NULL)) {
			perror("timer_settime");
			return -1;
		}
		while (1) {
			pause();
		}
		timer_delete(timerid);
	}

	if (perout >= 0) {
		if (clock_gettime(clkid, &ts)) {
			perror("clock_gettime");
			return -1;
		}
		memset(&perout_request, 0, sizeof(perout_request));
		perout_request.index = index;
		perout_request.start.sec = ts.tv_sec + 2;
		perout_request.start.nsec = 0;
		perout_request.period.sec = 0;
		perout_request.period.nsec = perout;
		if (ioctl(fd, PTP_PEROUT_REQUEST, &perout_request)) {
			perror("PTP_PEROUT_REQUEST");
		} else {
			puts("periodic output request okay");
		}
	}

	if (pin_index >= 0) {
		memset(&desc, 0, sizeof(desc));
		desc.index = pin_index;
		desc.func = pin_func;
		desc.chan = index;
		if (ioctl(fd, PTP_PIN_SETFUNC, &desc)) {
			perror("PTP_PIN_SETFUNC");
		} else {
			puts("set pin function okay");
		}
	}

	if (pps != -1) {
		int enable = pps ? 1 : 0;
		if (ioctl(fd, PTP_ENABLE_PPS, enable)) {
			perror("PTP_ENABLE_PPS");
		} else {
			puts("pps for system time request okay");
		}
	}

	if (pct_offset) {
		if (n_samples <= 0 || n_samples > 25) {
			puts("n_samples should be between 1 and 25");
			usage(progname);
			return -1;
		}

		sysoff = calloc(1, sizeof(*sysoff));
		if (!sysoff) {
			perror("calloc");
			return -1;
		}
		sysoff->n_samples = n_samples;

		if (ioctl(fd, PTP_SYS_OFFSET, sysoff))
			perror("PTP_SYS_OFFSET");
		else
			puts("system and phc clock time offset request okay");

		pct = &sysoff->ts[0];
		for (i = 0; i < sysoff->n_samples; i++) {
			t1 = pctns(pct+2*i);
			tp = pctns(pct+2*i+1);
			t2 = pctns(pct+2*i+2);
			interval = t2 - t1;
			offset = (t2 + t1) / 2 - tp;

			printf("system time: %ld.%ld\n",
				(pct+2*i)->sec, (pct+2*i)->nsec);
			printf("phc    time: %ld.%ld\n",
				(pct+2*i+1)->sec, (pct+2*i+1)->nsec);
			printf("system time: %ld.%ld\n",
				(pct+2*i+2)->sec, (pct+2*i+2)->nsec);
			printf("system/phc clock time offset is %ld ns\n"
				"system     clock time delay  is %ld ns\n",
				offset, interval);
		}

		free(sysoff);
	}

	close(fd);
	return 0;
}
Commit	Line	Data
d94ba80e RC	1	/*
	2	* PTP 1588 clock support - User space test program
	3	*
	4	* Copyright (C) 2010 OMICRON electronics GmbH
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	19	*/
	20	#include <errno.h>
	21	#include <fcntl.h>
	22	#include <math.h>
	23	#include <signal.h>
	24	#include <stdio.h>
	25	#include <stdlib.h>
	26	#include <string.h>
	27	#include <sys/ioctl.h>
	28	#include <sys/mman.h>
	29	#include <sys/stat.h>
	30	#include <sys/time.h>
	31	#include <sys/timex.h>
	32	#include <sys/types.h>
	33	#include <time.h>
	34	#include <unistd.h>
	35
	36	#include <linux/ptp_clock.h>
	37
	38	#define DEVICE "/dev/ptp0"
	39
	40	#ifndef ADJ_SETOFFSET
	41	#define ADJ_SETOFFSET 0x0100
	42	#endif
	43
	44	#ifndef CLOCK_INVALID
	45	#define CLOCK_INVALID -1
	46	#endif
	47
	48	/* When glibc offers the syscall, this will go away. */
	49	#include <sys/syscall.h>
	50	static int clock_adjtime(clockid_t id, struct timex *tx)
	51	{
	52	return syscall(__NR_clock_adjtime, id, tx);
	53	}
	54
	55	static clockid_t get_clockid(int fd)
	56	{
	57	#define CLOCKFD 3
	58	#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) \| CLOCKFD)
	59
	60	return FD_TO_CLOCKID(fd);
	61	}
	62
	63	static void handle_alarm(int s)
	64	{
65	printf("received signal %d\n", s);
66	}
67
68	static int install_handler(int signum, void (*handler)(int))
69	{
70	struct sigaction action;
71	sigset_t mask;
72
73	/* Unblock the signal. */
74	sigemptyset(&mask);
75	sigaddset(&mask, signum);
76	sigprocmask(SIG_UNBLOCK, &mask, NULL);
77
78	/* Install the signal handler. */
79	action.sa_handler = handler;
80	action.sa_flags = 0;
81	sigemptyset(&action.sa_mask);
82	sigaction(signum, &action, NULL);
83
84	return 0;
85	}
86
87	static long ppb_to_scaled_ppm(int ppb)
88	{
89	/*
90	* The 'freq' field in the 'struct timex' is in parts per
91	* million, but with a 16 bit binary fractional field.
92	* Instead of calculating either one of
93	*
94	* scaled_ppm = (ppb / 1000) << 16 [1]
95	* scaled_ppm = (ppb << 16) / 1000 [2]
96	*
97	* we simply use double precision math, in order to avoid the
98	* truncation in [1] and the possible overflow in [2].
99	*/
100	return (long) (ppb * 65.536);
101	}
102
568ebc59 DZ	103	static int64_t pctns(struct ptp_clock_time *t)
	104	{
	105	return t->sec * 1000000000LL + t->nsec;
	106	}
	107
d94ba80e RC	108	static void usage(char *progname)
	109	{
	110	fprintf(stderr,
	111	"usage: %s [options]\n"
	112	" -a val request a one-shot alarm after 'val' seconds\n"
	113	" -A val request a periodic alarm every 'val' seconds\n"
	114	" -c query the ptp clock's capabilities\n"
	115	" -d name device to open\n"
	116	" -e val read 'val' external time stamp events\n"
	117	" -f val adjust the ptp clock frequency by 'val' ppb\n"
	118	" -g get the ptp clock time\n"
	119	" -h prints this message\n"
61950e82	120	" -i val index for event/trigger\n"
568ebc59 DZ	121	" -k val measure the time offset between system and phc clock\n"
568ebc59 DZ	122	" for 'val' times (Maximum 25)\n"
888a3687 RC	123	" -l list the current pin configuration\n"
	124	" -L pin,val configure pin index 'pin' with function 'val'\n"
	125	" the channel index is taken from the '-i' option\n"
	126	" 'val' specifies the auxiliary function:\n"
	127	" 0 - none\n"
	128	" 1 - external time stamp\n"
	129	" 2 - periodic output\n"
d94ba80e RC	130	" -p val enable output with a period of 'val' nanoseconds\n"
	131	" -P val enable or disable (val=1\|0) the system clock PPS\n"
	132	" -s set the ptp clock time from the system time\n"
	133	" -S set the system time from the ptp clock time\n"
271c83de MR	134	" -t val shift the ptp clock time by 'val' seconds\n"
271c83de MR	135	" -T val set the ptp clock time to 'val' seconds\n",
d94ba80e RC	136	progname);
	137	}
	138
	139	int main(int argc, char *argv[])
	140	{
	141	struct ptp_clock_caps caps;
	142	struct ptp_extts_event event;
	143	struct ptp_extts_request extts_request;
	144	struct ptp_perout_request perout_request;
888a3687	145	struct ptp_pin_desc desc;
d94ba80e RC	146	struct timespec ts;
	147	struct timex tx;
	148
	149	static timer_t timerid;
	150	struct itimerspec timeout;
	151	struct sigevent sigevent;
	152
568ebc59 DZ	153	struct ptp_clock_time *pct;
	154	struct ptp_sys_offset *sysoff;
	155
	156
d94ba80e	157	char *progname;
568ebc59	158	int i, c, cnt, fd;
d94ba80e RC	159
	160	char *device = DEVICE;
	161	clockid_t clkid;
	162	int adjfreq = 0x7fffffff;
	163	int adjtime = 0;
	164	int capabilities = 0;
	165	int extts = 0;
	166	int gettime = 0;
61950e82	167	int index = 0;
888a3687	168	int list_pins = 0;
d94ba80e	169	int oneshot = 0;
568ebc59 DZ	170	int pct_offset = 0;
568ebc59 DZ	171	int n_samples = 0;
d94ba80e RC	172	int periodic = 0;
d94ba80e RC	173	int perout = -1;
888a3687	174	int pin_index = -1, pin_func;
d94ba80e	175	int pps = -1;
271c83de	176	int seconds = 0;
d94ba80e RC	177	int settime = 0;
d94ba80e RC	178
568ebc59 DZ	179	int64_t t1, t2, tp;
	180	int64_t interval, offset;
	181
d94ba80e RC	182	progname = strrchr(argv[0], '/');
d94ba80e RC	183	progname = progname ? 1+progname : argv[0];
271c83de	184	while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghi:k:lL:p:P:sSt:T:v"))) {
d94ba80e RC	185	switch (c) {
	186	case 'a':
	187	oneshot = atoi(optarg);
	188	break;
	189	case 'A':
	190	periodic = atoi(optarg);
	191	break;
	192	case 'c':
	193	capabilities = 1;
	194	break;
	195	case 'd':
	196	device = optarg;
	197	break;
	198	case 'e':
	199	extts = atoi(optarg);
	200	break;
	201	case 'f':
	202	adjfreq = atoi(optarg);
	203	break;
	204	case 'g':
	205	gettime = 1;
	206	break;
61950e82 SS	207	case 'i':
	208	index = atoi(optarg);
	209	break;
568ebc59 DZ	210	case 'k':
	211	pct_offset = 1;
	212	n_samples = atoi(optarg);
	213	break;
888a3687 RC	214	case 'l':
	215	list_pins = 1;
	216	break;
	217	case 'L':
	218	cnt = sscanf(optarg, "%d,%d", &pin_index, &pin_func);
	219	if (cnt != 2) {
	220	usage(progname);
	221	return -1;
	222	}
	223	break;
d94ba80e RC	224	case 'p':
	225	perout = atoi(optarg);
	226	break;
	227	case 'P':
	228	pps = atoi(optarg);
	229	break;
	230	case 's':
	231	settime = 1;
	232	break;
	233	case 'S':
	234	settime = 2;
	235	break;
	236	case 't':
	237	adjtime = atoi(optarg);
	238	break;
271c83de MR	239	case 'T':
	240	settime = 3;
	241	seconds = atoi(optarg);
	242	break;
d94ba80e RC	243	case 'h':
	244	usage(progname);
	245	return 0;
	246	case '?':
	247	default:
	248	usage(progname);
	249	return -1;
	250	}
	251	}
	252
	253	fd = open(device, O_RDWR);
	254	if (fd < 0) {
	255	fprintf(stderr, "opening %s: %s\n", device, strerror(errno));
	256	return -1;
	257	}
	258
	259	clkid = get_clockid(fd);
	260	if (CLOCK_INVALID == clkid) {
	261	fprintf(stderr, "failed to read clock id\n");
	262	return -1;
	263	}
	264
	265	if (capabilities) {
	266	if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
	267	perror("PTP_CLOCK_GETCAPS");
	268	} else {
	269	printf("capabilities:\n"
	270	" %d maximum frequency adjustment (ppb)\n"
	271	" %d programmable alarms\n"
	272	" %d external time stamp channels\n"
	273	" %d programmable periodic signals\n"
888a3687 RC	274	" %d pulse per second\n"
888a3687 RC	275	" %d programmable pins\n",
d94ba80e RC	276	caps.max_adj,
	277	caps.n_alarm,
	278	caps.n_ext_ts,
	279	caps.n_per_out,
888a3687 RC	280	caps.pps,
888a3687 RC	281	caps.n_pins);
d94ba80e RC	282	}
	283	}
	284
	285	if (0x7fffffff != adjfreq) {
	286	memset(&tx, 0, sizeof(tx));
	287	tx.modes = ADJ_FREQUENCY;
	288	tx.freq = ppb_to_scaled_ppm(adjfreq);
	289	if (clock_adjtime(clkid, &tx)) {
	290	perror("clock_adjtime");
	291	} else {
	292	puts("frequency adjustment okay");
	293	}
	294	}
	295
	296	if (adjtime) {
	297	memset(&tx, 0, sizeof(tx));
	298	tx.modes = ADJ_SETOFFSET;
	299	tx.time.tv_sec = adjtime;
	300	tx.time.tv_usec = 0;
	301	if (clock_adjtime(clkid, &tx) < 0) {
	302	perror("clock_adjtime");
	303	} else {
	304	puts("time shift okay");
	305	}
	306	}
	307
	308	if (gettime) {
	309	if (clock_gettime(clkid, &ts)) {
	310	perror("clock_gettime");
	311	} else {
	312	printf("clock time: %ld.%09ld or %s",
	313	ts.tv_sec, ts.tv_nsec, ctime(&ts.tv_sec));
	314	}
	315	}
	316
	317	if (settime == 1) {
	318	clock_gettime(CLOCK_REALTIME, &ts);
	319	if (clock_settime(clkid, &ts)) {
	320	perror("clock_settime");
	321	} else {
	322	puts("set time okay");
	323	}
	324	}
	325
	326	if (settime == 2) {
	327	clock_gettime(clkid, &ts);
	328	if (clock_settime(CLOCK_REALTIME, &ts)) {
	329	perror("clock_settime");
	330	} else {
	331	puts("set time okay");
	332	}
	333	}
	334
271c83de MR	335	if (settime == 3) {
	336	ts.tv_sec = seconds;
	337	ts.tv_nsec = 0;
	338	if (clock_settime(clkid, &ts)) {
	339	perror("clock_settime");
	340	} else {
	341	puts("set time okay");
	342	}
	343	}
	344
d94ba80e RC	345	if (extts) {
d94ba80e RC	346	memset(&extts_request, 0, sizeof(extts_request));
61950e82	347	extts_request.index = index;
d94ba80e RC	348	extts_request.flags = PTP_ENABLE_FEATURE;
	349	if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
	350	perror("PTP_EXTTS_REQUEST");
	351	extts = 0;
	352	} else {
	353	puts("external time stamp request okay");
	354	}
	355	for (; extts; extts--) {
	356	cnt = read(fd, &event, sizeof(event));
	357	if (cnt != sizeof(event)) {
	358	perror("read");
	359	break;
	360	}
	361	printf("event index %u at %lld.%09u\n", event.index,
	362	event.t.sec, event.t.nsec);
	363	fflush(stdout);
	364	}
	365	/* Disable the feature again. */
	366	extts_request.flags = 0;
	367	if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) {
	368	perror("PTP_EXTTS_REQUEST");
	369	}
	370	}
	371
888a3687 RC	372	if (list_pins) {
	373	int n_pins = 0;
	374	if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {
	375	perror("PTP_CLOCK_GETCAPS");
	376	} else {
	377	n_pins = caps.n_pins;
	378	}
	379	for (i = 0; i < n_pins; i++) {
	380	desc.index = i;
	381	if (ioctl(fd, PTP_PIN_GETFUNC, &desc)) {
	382	perror("PTP_PIN_GETFUNC");
	383	break;
	384	}
	385	printf("name %s index %u func %u chan %u\n",
	386	desc.name, desc.index, desc.func, desc.chan);
	387	}
	388	}
	389
d94ba80e RC	390	if (oneshot) {
	391	install_handler(SIGALRM, handle_alarm);
	392	/* Create a timer. */
	393	sigevent.sigev_notify = SIGEV_SIGNAL;
	394	sigevent.sigev_signo = SIGALRM;
	395	if (timer_create(clkid, &sigevent, &timerid)) {
	396	perror("timer_create");
	397	return -1;
	398	}
	399	/* Start the timer. */
	400	memset(&timeout, 0, sizeof(timeout));
	401	timeout.it_value.tv_sec = oneshot;
	402	if (timer_settime(timerid, 0, &timeout, NULL)) {
	403	perror("timer_settime");
	404	return -1;
	405	}
	406	pause();
	407	timer_delete(timerid);
	408	}
	409
	410	if (periodic) {
	411	install_handler(SIGALRM, handle_alarm);
	412	/* Create a timer. */
	413	sigevent.sigev_notify = SIGEV_SIGNAL;
	414	sigevent.sigev_signo = SIGALRM;
	415	if (timer_create(clkid, &sigevent, &timerid)) {
	416	perror("timer_create");
	417	return -1;
	418	}
	419	/* Start the timer. */
	420	memset(&timeout, 0, sizeof(timeout));
	421	timeout.it_interval.tv_sec = periodic;
	422	timeout.it_value.tv_sec = periodic;
	423	if (timer_settime(timerid, 0, &timeout, NULL)) {
	424	perror("timer_settime");
	425	return -1;
	426	}
	427	while (1) {
	428	pause();
	429	}
	430	timer_delete(timerid);
	431	}
	432
	433	if (perout >= 0) {
	434	if (clock_gettime(clkid, &ts)) {
	435	perror("clock_gettime");
	436	return -1;
	437	}
	438	memset(&perout_request, 0, sizeof(perout_request));
61950e82	439	perout_request.index = index;
d94ba80e RC	440	perout_request.start.sec = ts.tv_sec + 2;
	441	perout_request.start.nsec = 0;
	442	perout_request.period.sec = 0;
	443	perout_request.period.nsec = perout;
	444	if (ioctl(fd, PTP_PEROUT_REQUEST, &perout_request)) {
	445	perror("PTP_PEROUT_REQUEST");
	446	} else {
	447	puts("periodic output request okay");
	448	}
	449	}
	450
888a3687 RC	451	if (pin_index >= 0) {
	452	memset(&desc, 0, sizeof(desc));
	453	desc.index = pin_index;
	454	desc.func = pin_func;
	455	desc.chan = index;
	456	if (ioctl(fd, PTP_PIN_SETFUNC, &desc)) {
	457	perror("PTP_PIN_SETFUNC");
	458	} else {
	459	puts("set pin function okay");
	460	}
	461	}
	462
d94ba80e RC	463	if (pps != -1) {
	464	int enable = pps ? 1 : 0;
	465	if (ioctl(fd, PTP_ENABLE_PPS, enable)) {
	466	perror("PTP_ENABLE_PPS");
	467	} else {
	468	puts("pps for system time request okay");
	469	}
	470	}
	471
568ebc59 DZ	472	if (pct_offset) {
	473	if (n_samples <= 0 \|\| n_samples > 25) {
	474	puts("n_samples should be between 1 and 25");
	475	usage(progname);
	476	return -1;
	477	}
	478
	479	sysoff = calloc(1, sizeof(*sysoff));
	480	if (!sysoff) {
	481	perror("calloc");
	482	return -1;
	483	}
	484	sysoff->n_samples = n_samples;
	485
	486	if (ioctl(fd, PTP_SYS_OFFSET, sysoff))
	487	perror("PTP_SYS_OFFSET");
	488	else
	489	puts("system and phc clock time offset request okay");
	490
	491	pct = &sysoff->ts[0];
	492	for (i = 0; i < sysoff->n_samples; i++) {
	493	t1 = pctns(pct+2*i);
	494	tp = pctns(pct+2*i+1);
	495	t2 = pctns(pct+2*i+2);
	496	interval = t2 - t1;
	497	offset = (t2 + t1) / 2 - tp;
	498
	499	printf("system time: %ld.%ld\n",
	500	(pct+2i)->sec, (pct+2i)->nsec);
	501	printf("phc time: %ld.%ld\n",
	502	(pct+2i+1)->sec, (pct+2i+1)->nsec);
	503	printf("system time: %ld.%ld\n",
	504	(pct+2i+2)->sec, (pct+2i+2)->nsec);
	505	printf("system/phc clock time offset is %ld ns\n"
	506	"system clock time delay is %ld ns\n",
	507	offset, interval);
	508	}
	509
	510	free(sysoff);
	511	}
	512
d94ba80e RC	513	close(fd);
	514	return 0;
	515	}