def _test_wol_magic_packet(self):
"""Check the Wake-on-LAN (WOL) magic packet capabilities of a device.
Raises:
error.TestError if WOL functionality fails
"""
# Magic number WOL supported
capname = 'Supports Wake-on'
if self._caps[capname][0].find('g') != -1:
logging.info("%s support magic number WOL", self._ethname)
else:
raise error.TestError('%s should support magic number WOL' %
self._ethname)
# Check that WOL works
if self._caps['Wake-on'][0] != 'g':
utils.system_output("ethtool -s %s wol g" % self._ethname)
self._restore_wol = True
# Set RTC as backup to WOL
before_secs = rtc.get_seconds()
alarm_secs = before_secs + self._suspend_secs + self._threshold_secs
rtc.set_wake_alarm(alarm_secs)
sys_power.do_suspend(self._suspend_secs)
after_secs = rtc.get_seconds()
# flush RTC as it may not work subsequently if wake was not RTC
rtc.set_wake_alarm(0)
suspended_secs = after_secs - before_secs
if suspended_secs >= (self._suspend_secs + self._threshold_secs):
raise error.TestError("Device woke due to RTC not WOL")
def run_once(self, run_time_sec=60):
if run_time_sec < 10:
raise error.TestFail('Must run for at least 10 seconds')
with chrome.Chrome():
# Audio loop time should be significantly shorter than
# |run_time_sec| time, so that the total playback time doesn't
# exceed it by much.
audio_loop_time_sec = min(10, run_time_sec / 10 + 0.5)
# Set a low audio volume to avoid annoying people during tests.
audio_helper.set_volume_levels(10, 100)
# Start playing audio file.
self._enable_audio_playback = True
thread = threading.Thread(target=self._play_audio,
args=(audio_loop_time_sec, ))
thread.start()
# Restart powerd with timeouts for quick idle events.
gap_ms = run_time_sec * 1000 / 4
dim_ms = min(10000, gap_ms)
off_ms = min(20000, gap_ms * 2)
suspend_ms = min(30000, gap_ms * 3)
prefs = {
'disable_idle_suspend': 0,
'ignore_external_policy': 1,
'plugged_dim_ms': dim_ms,
'plugged_off_ms': off_ms,
'plugged_suspend_ms': suspend_ms,
'unplugged_dim_ms': dim_ms,
'unplugged_off_ms': off_ms,
'unplugged_suspend_ms': suspend_ms
}
self._pref_change = power_utils.PowerPrefChanger(prefs)
# Set an alarm to wake up the system in case the audio detector
# fails and the system suspends.
alarm_time = rtc.get_seconds() + run_time_sec
rtc.set_wake_alarm(alarm_time)
time.sleep(run_time_sec)
# Stop powerd to avoid suspending when the audio stops.
utils.system_output('stop powerd')
# Stop audio and wait for the audio thread to terminate.
self._enable_audio_playback = False
thread.join(timeout=(audio_loop_time_sec * 2))
if thread.is_alive():
logging.error('Audio thread did not terminate at end of test.')
# Check powerd's log to make sure that no suspend took place.
powerd_log_path = '/var/log/power_manager/powerd.LATEST'
log = open(powerd_log_path, 'r').read()
if log.find('Starting suspend') != -1:
err_str = 'System suspended while audio was playing.'
raise error.TestFail(err_str)
def power_state_cycle(self, timeout=None):
try:
while not os.path.exists(STOP_FILE):
if timeout and time.mktime(time.localtime()) > timeout:
raise error.TestFail('didn\'t find %s before timeout.' %
STOP_FILE)
self.suspend_and_resume(random.randint(MIN_SLEEP_INTERVAL, 15))
time.sleep(
random.randint(MIN_WORK_INTERVAL, MIN_WORK_INTERVAL + 5))
finally:
# Ensure we disable the RTC alarm, leaving the original state
rtc.set_wake_alarm(0)
def prepare_wakeup(seconds):
"""Prepare the device to wake up from an upcoming suspend.
@param seconds: The number of seconds to allow the device to suspend.
"""
# May cause DUT not wake from sleep if the suspend time is 1 second.
# It happens when the current clock (floating point) is close to the
# next integer, as the RTC sysfs interface only accepts integers.
# Make sure it is larger than or equal to 2.
assert seconds >= 2
wakeup_count = read_wakeup_count()
alarm = int(rtc.get_seconds() + seconds)
logging.debug('Suspend for %d seconds, wakealarm = %d', seconds, alarm)
rtc.set_wake_alarm(alarm)
return (alarm, wakeup_count)
def run_once(self, run_time_sec=60):
if run_time_sec < 10:
raise error.TestFail('Must run for at least 10 seconds')
with chrome.Chrome():
# Audio loop time should be significantly shorter than
# |run_time_sec| time, so that the total playback time doesn't
# exceed it by much.
audio_loop_time_sec = min(10, run_time_sec / 10 + 0.5)
# Set a low audio volume to avoid annoying people during tests.
audio_helper.set_volume_levels(10, 100)
# Start a subprocess that uses dbus-monitor to listen for suspend
# announcements from powerd and writes the output to a log.
dbus_log_fd, dbus_log_name = tempfile.mkstemp()
os.unlink(dbus_log_name)
dbus_log = os.fdopen(dbus_log_fd)
dbus_proc = subprocess.Popen(
'dbus-monitor --monitor --system ' +
'"type=\'signal\',interface=\'org.chromium.PowerManager\',' +
'member=\'SuspendImminent\'"',
shell=True,
stdout=dbus_log)
# Start playing audio file.
self._enable_audio_playback = True
thread = threading.Thread(target=self._play_audio,
args=(audio_loop_time_sec, ))
thread.start()
# Restart powerd with timeouts for quick idle events.
gap_ms = run_time_sec * 1000 / 4
dim_ms = min(10000, gap_ms)
off_ms = min(20000, gap_ms * 2)
suspend_ms = min(30000, gap_ms * 3)
prefs = {
'disable_idle_suspend': 0,
'ignore_external_policy': 1,
'plugged_dim_ms': dim_ms,
'plugged_off_ms': off_ms,
'plugged_suspend_ms': suspend_ms,
'unplugged_dim_ms': dim_ms,
'unplugged_off_ms': off_ms,
'unplugged_suspend_ms': suspend_ms
}
self._pref_change = power_utils.PowerPrefChanger(prefs)
# Set an alarm to wake up the system in case the audio detector
# fails and the system suspends.
alarm_time = rtc.get_seconds() + run_time_sec
rtc.set_wake_alarm(alarm_time)
time.sleep(run_time_sec)
# Stop powerd to avoid suspending when the audio stops.
utils.system_output('stop powerd')
# Stop audio and wait for the audio thread to terminate.
self._enable_audio_playback = False
thread.join(timeout=(audio_loop_time_sec * 2))
if thread.is_alive():
logging.error('Audio thread did not terminate at end of test.')
# Check the D-Bus log to make sure that no suspend took place.
# dbus-monitor logs messages about its initial connection to the bus
# in addition to the signals that we asked it for, so look for the
# signal name in its output.
dbus_proc.kill()
dbus_log.seek(0)
if 'SuspendImminent' in dbus_log.read():
err_str = 'System suspended while audio was playing.'
raise error.TestFail(err_str)
def fire_wakealarm(rtc_device):
"""
Schedule a wakealarm and wait for it to fire.
"""
rtc.set_wake_alarm('+1', rtc_device)
time.sleep(2)