From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- tools/testing/selftests/ptp/.gitignore | 1 + tools/testing/selftests/ptp/Makefile | 10 + tools/testing/selftests/ptp/testptp.c | 521 +++++++++++++++++++++++++++++++++ tools/testing/selftests/ptp/testptp.mk | 33 +++ 4 files changed, 565 insertions(+) create mode 100644 tools/testing/selftests/ptp/.gitignore create mode 100644 tools/testing/selftests/ptp/Makefile create mode 100644 tools/testing/selftests/ptp/testptp.c create mode 100644 tools/testing/selftests/ptp/testptp.mk (limited to 'tools/testing/selftests/ptp') diff --git a/tools/testing/selftests/ptp/.gitignore b/tools/testing/selftests/ptp/.gitignore new file mode 100644 index 000000000..f562e49d6 --- /dev/null +++ b/tools/testing/selftests/ptp/.gitignore @@ -0,0 +1 @@ +testptp diff --git a/tools/testing/selftests/ptp/Makefile b/tools/testing/selftests/ptp/Makefile new file mode 100644 index 000000000..ef06de089 --- /dev/null +++ b/tools/testing/selftests/ptp/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0 +CFLAGS += -I../../../../usr/include/ +TEST_PROGS := testptp +LDLIBS += -lrt +all: $(TEST_PROGS) + +include ../lib.mk + +clean: + rm -fr $(TEST_PROGS) diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c new file mode 100644 index 000000000..a5d8f0ab0 --- /dev/null +++ b/tools/testing/selftests/ptp/testptp.c @@ -0,0 +1,521 @@ +/* + * 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. + */ +#define _GNU_SOURCE +#define __SANE_USERSPACE_TYPES__ /* For PPC64, to get LL64 types */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define DEVICE "/dev/ptp0" + +#ifndef ADJ_SETOFFSET +#define ADJ_SETOFFSET 0x0100 +#endif + +#ifndef CLOCK_INVALID +#define CLOCK_INVALID -1 +#endif + +/* clock_adjtime is not available in GLIBC < 2.14 */ +#if !__GLIBC_PREREQ(2, 14) +#include +static int clock_adjtime(clockid_t id, struct timex *tx) +{ + return syscall(__NR_clock_adjtime, id, tx); +} +#endif + +static clockid_t get_clockid(int fd) +{ +#define CLOCKFD 3 + return (((unsigned int) ~fd) << 3) | CLOCKFD; +} + +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; + unsigned int i; + int 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" + " %d cross timestamping\n", + caps.max_adj, + caps.n_alarm, + caps.n_ext_ts, + caps.n_per_out, + caps.pps, + caps.n_pins, + caps.cross_timestamping); + } + } + + 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: %lld.%u\n", + (pct+2*i)->sec, (pct+2*i)->nsec); + printf("phc time: %lld.%u\n", + (pct+2*i+1)->sec, (pct+2*i+1)->nsec); + printf("system time: %lld.%u\n", + (pct+2*i+2)->sec, (pct+2*i+2)->nsec); + printf("system/phc clock time offset is %" PRId64 " ns\n" + "system clock time delay is %" PRId64 " ns\n", + offset, interval); + } + + free(sysoff); + } + + close(fd); + return 0; +} diff --git a/tools/testing/selftests/ptp/testptp.mk b/tools/testing/selftests/ptp/testptp.mk new file mode 100644 index 000000000..4ef2d9755 --- /dev/null +++ b/tools/testing/selftests/ptp/testptp.mk @@ -0,0 +1,33 @@ +# 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. + +CC = $(CROSS_COMPILE)gcc +INC = -I$(KBUILD_OUTPUT)/usr/include +CFLAGS = -Wall $(INC) +LDLIBS = -lrt +PROGS = testptp + +all: $(PROGS) + +testptp: testptp.o + +clean: + rm -f testptp.o + +distclean: clean + rm -f $(PROGS) -- cgit v1.2.3