338 lines
7.1 KiB
C
338 lines
7.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Real Time Clock Driver Test Program
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*
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* Copyright (c) 2018 Alexandre Belloni <alexandre.belloni@bootlin.com>
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <linux/rtc.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include "../kselftest_harness.h"
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#define NUM_UIE 3
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#define ALARM_DELTA 3
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static char *rtc_file = "/dev/rtc0";
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FIXTURE(rtc) {
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int fd;
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};
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FIXTURE_SETUP(rtc) {
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self->fd = open(rtc_file, O_RDONLY);
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ASSERT_NE(-1, self->fd);
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}
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FIXTURE_TEARDOWN(rtc) {
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close(self->fd);
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}
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TEST_F(rtc, date_read) {
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int rc;
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struct rtc_time rtc_tm;
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/* Read the RTC time/date */
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rc = ioctl(self->fd, RTC_RD_TIME, &rtc_tm);
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ASSERT_NE(-1, rc);
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TH_LOG("Current RTC date/time is %02d/%02d/%02d %02d:%02d:%02d.",
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rtc_tm.tm_mday, rtc_tm.tm_mon + 1, rtc_tm.tm_year + 1900,
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rtc_tm.tm_hour, rtc_tm.tm_min, rtc_tm.tm_sec);
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}
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TEST_F(rtc, uie_read) {
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int i, rc, irq = 0;
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unsigned long data;
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/* Turn on update interrupts */
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rc = ioctl(self->fd, RTC_UIE_ON, 0);
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if (rc == -1) {
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ASSERT_EQ(EINVAL, errno);
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TH_LOG("skip update IRQs not supported.");
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return;
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}
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for (i = 0; i < NUM_UIE; i++) {
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/* This read will block */
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rc = read(self->fd, &data, sizeof(data));
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ASSERT_NE(-1, rc);
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irq++;
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}
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EXPECT_EQ(NUM_UIE, irq);
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rc = ioctl(self->fd, RTC_UIE_OFF, 0);
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ASSERT_NE(-1, rc);
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}
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TEST_F(rtc, uie_select) {
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int i, rc, irq = 0;
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unsigned long data;
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/* Turn on update interrupts */
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rc = ioctl(self->fd, RTC_UIE_ON, 0);
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if (rc == -1) {
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ASSERT_EQ(EINVAL, errno);
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TH_LOG("skip update IRQs not supported.");
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return;
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}
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for (i = 0; i < NUM_UIE; i++) {
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struct timeval tv = { .tv_sec = 2 };
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fd_set readfds;
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FD_ZERO(&readfds);
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FD_SET(self->fd, &readfds);
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/* The select will wait until an RTC interrupt happens. */
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rc = select(self->fd + 1, &readfds, NULL, NULL, &tv);
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ASSERT_NE(-1, rc);
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ASSERT_NE(0, rc);
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/* This read won't block */
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rc = read(self->fd, &data, sizeof(unsigned long));
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ASSERT_NE(-1, rc);
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irq++;
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}
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EXPECT_EQ(NUM_UIE, irq);
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rc = ioctl(self->fd, RTC_UIE_OFF, 0);
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ASSERT_NE(-1, rc);
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}
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TEST_F(rtc, alarm_alm_set) {
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struct timeval tv = { .tv_sec = ALARM_DELTA + 2 };
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unsigned long data;
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struct rtc_time tm;
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fd_set readfds;
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time_t secs, new;
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int rc;
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rc = ioctl(self->fd, RTC_RD_TIME, &tm);
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ASSERT_NE(-1, rc);
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secs = timegm((struct tm *)&tm) + ALARM_DELTA;
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gmtime_r(&secs, (struct tm *)&tm);
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rc = ioctl(self->fd, RTC_ALM_SET, &tm);
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if (rc == -1) {
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ASSERT_EQ(EINVAL, errno);
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TH_LOG("skip alarms are not supported.");
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return;
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}
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rc = ioctl(self->fd, RTC_ALM_READ, &tm);
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ASSERT_NE(-1, rc);
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TH_LOG("Alarm time now set to %02d:%02d:%02d.",
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tm.tm_hour, tm.tm_min, tm.tm_sec);
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/* Enable alarm interrupts */
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rc = ioctl(self->fd, RTC_AIE_ON, 0);
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ASSERT_NE(-1, rc);
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FD_ZERO(&readfds);
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FD_SET(self->fd, &readfds);
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rc = select(self->fd + 1, &readfds, NULL, NULL, &tv);
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ASSERT_NE(-1, rc);
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ASSERT_NE(0, rc);
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/* Disable alarm interrupts */
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rc = ioctl(self->fd, RTC_AIE_OFF, 0);
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ASSERT_NE(-1, rc);
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rc = read(self->fd, &data, sizeof(unsigned long));
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ASSERT_NE(-1, rc);
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TH_LOG("data: %lx", data);
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rc = ioctl(self->fd, RTC_RD_TIME, &tm);
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ASSERT_NE(-1, rc);
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new = timegm((struct tm *)&tm);
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ASSERT_EQ(new, secs);
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}
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TEST_F(rtc, alarm_wkalm_set) {
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struct timeval tv = { .tv_sec = ALARM_DELTA + 2 };
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struct rtc_wkalrm alarm = { 0 };
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struct rtc_time tm;
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unsigned long data;
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fd_set readfds;
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time_t secs, new;
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int rc;
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rc = ioctl(self->fd, RTC_RD_TIME, &alarm.time);
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ASSERT_NE(-1, rc);
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secs = timegm((struct tm *)&alarm.time) + ALARM_DELTA;
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gmtime_r(&secs, (struct tm *)&alarm.time);
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alarm.enabled = 1;
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rc = ioctl(self->fd, RTC_WKALM_SET, &alarm);
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if (rc == -1) {
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ASSERT_EQ(EINVAL, errno);
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TH_LOG("skip alarms are not supported.");
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return;
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}
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rc = ioctl(self->fd, RTC_WKALM_RD, &alarm);
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ASSERT_NE(-1, rc);
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TH_LOG("Alarm time now set to %02d/%02d/%02d %02d:%02d:%02d.",
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alarm.time.tm_mday, alarm.time.tm_mon + 1,
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alarm.time.tm_year + 1900, alarm.time.tm_hour,
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alarm.time.tm_min, alarm.time.tm_sec);
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FD_ZERO(&readfds);
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FD_SET(self->fd, &readfds);
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rc = select(self->fd + 1, &readfds, NULL, NULL, &tv);
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ASSERT_NE(-1, rc);
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ASSERT_NE(0, rc);
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rc = read(self->fd, &data, sizeof(unsigned long));
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ASSERT_NE(-1, rc);
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rc = ioctl(self->fd, RTC_RD_TIME, &tm);
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ASSERT_NE(-1, rc);
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new = timegm((struct tm *)&tm);
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ASSERT_EQ(new, secs);
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}
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TEST_F(rtc, alarm_alm_set_minute) {
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struct timeval tv = { .tv_sec = 62 };
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unsigned long data;
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struct rtc_time tm;
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fd_set readfds;
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time_t secs, new;
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int rc;
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rc = ioctl(self->fd, RTC_RD_TIME, &tm);
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ASSERT_NE(-1, rc);
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secs = timegm((struct tm *)&tm) + 60 - tm.tm_sec;
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gmtime_r(&secs, (struct tm *)&tm);
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rc = ioctl(self->fd, RTC_ALM_SET, &tm);
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if (rc == -1) {
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ASSERT_EQ(EINVAL, errno);
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TH_LOG("skip alarms are not supported.");
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return;
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}
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rc = ioctl(self->fd, RTC_ALM_READ, &tm);
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ASSERT_NE(-1, rc);
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TH_LOG("Alarm time now set to %02d:%02d:%02d.",
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tm.tm_hour, tm.tm_min, tm.tm_sec);
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/* Enable alarm interrupts */
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rc = ioctl(self->fd, RTC_AIE_ON, 0);
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ASSERT_NE(-1, rc);
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FD_ZERO(&readfds);
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FD_SET(self->fd, &readfds);
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rc = select(self->fd + 1, &readfds, NULL, NULL, &tv);
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ASSERT_NE(-1, rc);
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ASSERT_NE(0, rc);
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/* Disable alarm interrupts */
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rc = ioctl(self->fd, RTC_AIE_OFF, 0);
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ASSERT_NE(-1, rc);
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rc = read(self->fd, &data, sizeof(unsigned long));
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ASSERT_NE(-1, rc);
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TH_LOG("data: %lx", data);
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rc = ioctl(self->fd, RTC_RD_TIME, &tm);
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ASSERT_NE(-1, rc);
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new = timegm((struct tm *)&tm);
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ASSERT_EQ(new, secs);
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}
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TEST_F(rtc, alarm_wkalm_set_minute) {
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struct timeval tv = { .tv_sec = 62 };
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struct rtc_wkalrm alarm = { 0 };
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struct rtc_time tm;
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unsigned long data;
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fd_set readfds;
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time_t secs, new;
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int rc;
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rc = ioctl(self->fd, RTC_RD_TIME, &alarm.time);
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ASSERT_NE(-1, rc);
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secs = timegm((struct tm *)&alarm.time) + 60 - alarm.time.tm_sec;
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gmtime_r(&secs, (struct tm *)&alarm.time);
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alarm.enabled = 1;
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rc = ioctl(self->fd, RTC_WKALM_SET, &alarm);
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if (rc == -1) {
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ASSERT_EQ(EINVAL, errno);
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TH_LOG("skip alarms are not supported.");
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return;
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}
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rc = ioctl(self->fd, RTC_WKALM_RD, &alarm);
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ASSERT_NE(-1, rc);
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TH_LOG("Alarm time now set to %02d/%02d/%02d %02d:%02d:%02d.",
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alarm.time.tm_mday, alarm.time.tm_mon + 1,
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alarm.time.tm_year + 1900, alarm.time.tm_hour,
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alarm.time.tm_min, alarm.time.tm_sec);
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FD_ZERO(&readfds);
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FD_SET(self->fd, &readfds);
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rc = select(self->fd + 1, &readfds, NULL, NULL, &tv);
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ASSERT_NE(-1, rc);
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ASSERT_NE(0, rc);
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rc = read(self->fd, &data, sizeof(unsigned long));
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ASSERT_NE(-1, rc);
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rc = ioctl(self->fd, RTC_RD_TIME, &tm);
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ASSERT_NE(-1, rc);
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new = timegm((struct tm *)&tm);
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ASSERT_EQ(new, secs);
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}
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static void __attribute__((constructor))
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__constructor_order_last(void)
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{
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if (!__constructor_order)
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__constructor_order = _CONSTRUCTOR_ORDER_BACKWARD;
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}
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int main(int argc, char **argv)
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{
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switch (argc) {
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case 2:
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rtc_file = argv[1];
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/* FALLTHROUGH */
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case 1:
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break;
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default:
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fprintf(stderr, "usage: %s [rtcdev]\n", argv[0]);
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return 1;
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}
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return test_harness_run(argc, argv);
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}
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