This new autotest module implements a simple test for the driver of realtime
clock. It do the testing of interrupt, date reading, alarm and
frequency.
Please refer the Documentation/rtc.txt for details.
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
client/tests/rtc/src/Makefile | 19 +++
client/tests/rtc/src/rtctest.c | 261 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 280 insertions(+), 0 deletions(-)
create mode 100644 client/tests/rtc/src/Makefile
create mode 100644 client/tests/rtc/src/rtctest.c
diff --git a/client/tests/rtc/control b/client/tests/rtc/control
new file mode 100644
index 0000000..f0f64c9
--- /dev/null
+++ b/client/tests/rtc/control
@@ -0,0 +1,15 @@
+TIME="SHORT"
+AUTHOR = "Jason Wang <jaso...@redhat.com>"
+DOC = """
+rtc is a simple test of realtime clock driver which was grabbed from
+Documentation/rtc.txt. It does the functional test of interrupt, alarm and
+requeseted frequency.
+
+Please refer the kernel documentation for details.
+"""
+NAME = 'rtc'
+TEST_CLASS = 'kernel'
+TEST_CATEGORY = 'Functional'
+TEST_TYPE = 'client'
+
+job.run_test('rtc')
diff --git a/client/tests/rtc/rtc.py b/client/tests/rtc/rtc.py
new file mode 100644
index 0000000..d4a1500
--- /dev/null
+++ b/client/tests/rtc/rtc.py
@@ -0,0 +1,23 @@
+import os
+from autotest_lib.client.bin import test, utils
+from autotest_lib.client.common_lib import error
+
+class rtc(test.test):
+ version = 1
+
+ preserve_srcdir = True
+
+ def setup(self):
+ os.chdir(self.srcdir)
+ utils.system('make')
+
+
+ def initialize(self):
+ self.job.require_gcc()
+
+
+ def run_once(self, def_rtc="/dev/rtc0", maxfreq=64):
+ if not os.path.exists(def_rtc):
+ raise error.TestNAError("%s doest not existed." % def_rtc)
+ result = utils.system(self.srcdir + '/rtctest %s %s' % (def_rtc,
+ maxfreq))
diff --git a/client/tests/rtc/src/Makefile b/client/tests/rtc/src/Makefile
new file mode 100644
index 0000000..f99dc60
--- /dev/null
+++ b/client/tests/rtc/src/Makefile
@@ -0,0 +1,19 @@
+CC= cc
+CFLAGS= -O -Wall -Wstrict-prototypes
+
+PROGS= rtctest
+
+SRCS= rtctest.c
+OBJS= ${SRCS:.c=.o}
+
+
+all: $(PROGS)
+
+rtctest: $(OBJS)
+ $(CC) $(LDFLAGS) -o rtctest $(OBJS)
+
+clean:
+ -rm -f $(OBJS)
+
+clobber: clean
+ -rm -f $(PROGS)
diff --git a/client/tests/rtc/src/rtctest.c b/client/tests/rtc/src/rtctest.c
new file mode 100644
index 0000000..25b74af
--- /dev/null
+++ b/client/tests/rtc/src/rtctest.c
@@ -0,0 +1,261 @@
+/*
+ * Real Time Clock Driver Test/Example Program
+ *
+ * Compile with:
+ * gcc -s -Wall -Wstrict-prototypes rtctest.c -o rtctest
+ *
+ * Copyright (C) 1996, Paul Gortmaker.
+ * Copyright (C) 2010, Jason Wang <jasow...@redhat.com>
+ *
+ * Released under the GNU General Public License, version 2,
+ * included herein by reference.
+ *
+ */
+
+#include <stdio.h>
+#include <linux/rtc.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+
+
+/*
+ * This expects the new RTC class driver framework, working with
+ * clocks that will often not be clones of what the PC-AT had.
+ * Use the command line to specify another RTC if you need one.
+ */
+static const char default_rtc[] = "/dev/rtc0";
+static int maxfreq = 64;
+
+int main(int argc, char **argv)
+{
+ int i, fd, retval, irqcount = 0;
+ unsigned long tmp, data;
+ struct rtc_time rtc_tm;
+ const char *rtc = default_rtc;
+
+ switch (argc) {
+ case 3:
+ maxfreq = atoi(argv[2]);
+ case 2:
+ rtc = argv[1];
+ /* FALLTHROUGH */
+ case 1:
+ break;
+ default:
+ fprintf(stderr, "usage: rtctest [rtcdev] [maxfreq]\n");
+ return 1;
+ }
+
+ fd = open(rtc, O_RDONLY);
+
+ if (fd == -1) {
+ perror(rtc);
+ exit(errno);
+ }
+
+ fprintf(stderr, "\n\t\t\tRTC Driver Test Example.\n\n");
+
+ /* Turn on update interrupts (one per second) */
+ retval = ioctl(fd, RTC_UIE_ON, 0);
+ if (retval == -1) {
+ if (errno == ENOTTY) {
+ fprintf(stderr,
+ "\n...Update IRQs not supported.\n");
+ goto test_READ;
+ }
+ perror("RTC_UIE_ON ioctl");
+ exit(errno);
+ }
+
+ fprintf(stderr, "Counting 5 update (1/sec) interrupts from reading %s:",
+ rtc);
+ fflush(stderr);
+ for (i=1; i<6; i++) {
+ /* This read will block */
+ retval = read(fd, &data, sizeof(unsigned long));
+ if (retval == -1) {
+ perror("read");
+ exit(errno);
+ }
+ fprintf(stderr, " %d",i);
+ fflush(stderr);
+ irqcount++;
+ }
+
+ fprintf(stderr, "\nAgain, from using select(2) on /dev/rtc:");
+ fflush(stderr);
+ for (i=1; i<6; i++) {
+ struct timeval tv = {5, 0}; /* 5 second timeout on select */
+ fd_set readfds;
+
+ FD_ZERO(&readfds);
+ FD_SET(fd, &readfds);
+ /* The select will wait until an RTC interrupt happens. */
+ retval = select(fd+1, &readfds, NULL, NULL, &tv);
+ if (retval == -1) {
+ perror("select");
+ exit(errno);
+ }
+ /* This read won't block unlike the select-less case above. */
+ retval = read(fd, &data, sizeof(unsigned long));
+ if (retval == -1) {
+ perror("read");
+ exit(errno);
+ }
+ fprintf(stderr, " %d",i);
+ fflush(stderr);
+ irqcount++;
+ }
+
+ /* Turn off update interrupts */
+ retval = ioctl(fd, RTC_UIE_OFF, 0);
+ if (retval == -1) {
+ perror("RTC_UIE_OFF ioctl");
+ exit(errno);
+ }
+
+test_READ:
+ /* Read the RTC time/date */
+ retval = ioctl(fd, RTC_RD_TIME, &rtc_tm);
+ if (retval == -1) {
+ perror("RTC_RD_TIME ioctl");
+ exit(errno);
+ }
+
+ fprintf(stderr, "\n\nCurrent RTC date/time is %d-%d-%d,
%02d:%02d:%02d.\n",
+ rtc_tm.tm_mday, rtc_tm.tm_mon + 1, rtc_tm.tm_year + 1900,
+ rtc_tm.tm_hour, rtc_tm.tm_min, rtc_tm.tm_sec);
+
+ /* Set the alarm to 5 sec in the future, and check for rollover */
+ rtc_tm.tm_sec += 5;
+ if (rtc_tm.tm_sec >= 60) {
+ rtc_tm.tm_sec %= 60;
+ rtc_tm.tm_min++;
+ }
+ if (rtc_tm.tm_min == 60) {
+ rtc_tm.tm_min = 0;
+ rtc_tm.tm_hour++;
+ }
+ if (rtc_tm.tm_hour == 24)
+ rtc_tm.tm_hour = 0;
+
+ retval = ioctl(fd, RTC_ALM_SET, &rtc_tm);
+ if (retval == -1) {
+ if (errno == ENOTTY) {
+ fprintf(stderr,
+ "\n...Alarm IRQs not supported.\n");
+ goto test_PIE;
+ }
+ perror("RTC_ALM_SET ioctl");
+ exit(errno);
+ }
+
+ /* Read the current alarm settings */
+ retval = ioctl(fd, RTC_ALM_READ, &rtc_tm);
+ if (retval == -1) {
+ perror("RTC_ALM_READ ioctl");
+ exit(errno);
+ }
+
+ fprintf(stderr, "Alarm time now set to %02d:%02d:%02d.\n",
+ rtc_tm.tm_hour, rtc_tm.tm_min, rtc_tm.tm_sec);
+
+ /* Enable alarm interrupts */
+ retval = ioctl(fd, RTC_AIE_ON, 0);
+ if (retval == -1) {
+ perror("RTC_AIE_ON ioctl");
+ exit(errno);
+ }
+
+ fprintf(stderr, "Waiting 5 seconds for alarm...");
+ fflush(stderr);
+ /* This blocks until the alarm ring causes an interrupt */
+ retval = read(fd, &data, sizeof(unsigned long));
+ if (retval == -1) {
+ perror("read");
+ exit(errno);
+ }
+ irqcount++;
+ fprintf(stderr, " okay. Alarm rang.\n");
+
+ /* Disable alarm interrupts */
+ retval = ioctl(fd, RTC_AIE_OFF, 0);
+ if (retval == -1) {
+ perror("RTC_AIE_OFF ioctl");
+ exit(errno);
+ }
+
+test_PIE:
+ /* Read periodic IRQ rate */
+ retval = ioctl(fd, RTC_IRQP_READ, &tmp);
+ if (retval == -1) {
+ /* not all RTCs support periodic IRQs */
+ if (errno == ENOTTY) {
+ fprintf(stderr, "\nNo periodic IRQ support\n");
+ goto done;
+ }
+ perror("RTC_IRQP_READ ioctl");
+ exit(errno);
+ }
+ fprintf(stderr, "\nPeriodic IRQ rate is %ldHz.\n", tmp);
+
+ fprintf(stderr, "Counting 20 interrupts at:");
+ fflush(stderr);
+
+ /* The frequencies 128Hz, 256Hz, ... 8192Hz are only allowed for root.
*/
+ for (tmp=2; tmp<=maxfreq; tmp*=2) {
+
+ retval = ioctl(fd, RTC_IRQP_SET, tmp);
+ if (retval == -1) {
+ /* not all RTCs can change their periodic IRQ rate */
+ if (errno == ENOTTY) {
+ fprintf(stderr,
+ "\n...Periodic IRQ rate is fixed\n");
+ goto done;
+ }
+ perror("RTC_IRQP_SET ioctl");
+ exit(errno);
+ }
+
+ fprintf(stderr, "\n%ldHz:\t", tmp);
+ fflush(stderr);
+
+ /* Enable periodic interrupts */
+ retval = ioctl(fd, RTC_PIE_ON, 0);
+ if (retval == -1) {
+ perror("RTC_PIE_ON ioctl");
+ exit(errno);
+ }
+
+ for (i=1; i<21; i++) {
+ /* This blocks */
+ retval = read(fd, &data, sizeof(unsigned long));
+ if (retval == -1) {
+ perror("read");
+ exit(errno);
+ }
+ fprintf(stderr, " %d",i);
+ fflush(stderr);
+ irqcount++;
+ }
+
+ /* Disable periodic interrupts */
+ retval = ioctl(fd, RTC_PIE_OFF, 0);
+ if (retval == -1) {
+ perror("RTC_PIE_OFF ioctl");
+ exit(errno);
+ }
+ }
+
+done:
+ fprintf(stderr, "\n\n\t\t\t *** Test complete ***\n");
+
+ close(fd);
+
+ return 0;
+}
--
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