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# Copyright 2017 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from _hardware import HardwareException, Expectation
from _hardware_android import HardwareAndroid
from collections import namedtuple
import itertools
CPU_CLOCK_RATE = 1670400
GPU_CLOCK_RATE = 510000000
DEVFREQ_DIRNAME = '/sys/class/devfreq'
DEVFREQ_THROTTLE = 0.74
DEVFREQ_BLACKLIST = ('b00000.qcom,kgsl-3d0', 'soc:qcom,kgsl-busmon',
'soc:qcom,m4m')
DevfreqKnobs = namedtuple('knobs',
('available_governors', 'available_frequencies',
'governor', 'min_freq', 'max_freq', 'cur_freq'))
class HardwarePixel(HardwareAndroid):
def __init__(self, adb):
HardwareAndroid.__init__(self, adb)
self._discover_devfreqs()
def __enter__(self):
HardwareAndroid.__enter__(self)
if not self._adb.is_root():
return self
self._adb.shell('\n'.join(['''\
stop thermal-engine
stop thermald
stop perfd
stop mpdecision''',
# enable and lock the two fast cores.
'''
for N in 3 2; do
echo 1 > /sys/devices/system/cpu/cpu$N/online
echo userspace > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_governor
echo %i > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_max_freq
echo %i > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_min_freq
echo %i > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_setspeed
done''' % tuple(CPU_CLOCK_RATE for _ in range(3)),
# turn off the two slow cores
'''
for N in 1 0; do
echo 0 > /sys/devices/system/cpu/cpu$N/online
done''',
# gpu perf commands from
# https://developer.qualcomm.com/qfile/28823/lm80-p0436-11_adb_commands.pdf
'''
echo 0 > /sys/class/kgsl/kgsl-3d0/bus_split
echo 1 > /sys/class/kgsl/kgsl-3d0/force_bus_on
echo 1 > /sys/class/kgsl/kgsl-3d0/force_rail_on
echo 1 > /sys/class/kgsl/kgsl-3d0/force_clk_on
echo 1000000 > /sys/class/kgsl/kgsl-3d0/idle_timer
echo userspace > /sys/class/kgsl/kgsl-3d0/devfreq/governor
echo 2 > /sys/class/kgsl/kgsl-3d0/max_pwrlevel
echo 2 > /sys/class/kgsl/kgsl-3d0/min_pwrlevel
echo 2 > /sys/class/kgsl/kgsl-3d0/thermal_pwrlevel
echo %i > /sys/class/kgsl/kgsl-3d0/devfreq/max_freq
echo %i > /sys/class/kgsl/kgsl-3d0/devfreq/min_freq
echo %i > /sys/class/kgsl/kgsl-3d0/max_gpuclk
echo %i > /sys/class/kgsl/kgsl-3d0/gpuclk''' %
tuple(GPU_CLOCK_RATE for _ in range(4))] + \
self._devfreq_lock_cmds))
return self
def sanity_check(self):
HardwareAndroid.sanity_check(self)
if not self._adb.is_root():
return
result = self._adb.check(' '.join(
['cat',
'/sys/class/power_supply/battery/capacity',
'/sys/devices/system/cpu/online'] + \
['/sys/devices/system/cpu/cpu%i/cpufreq/scaling_cur_freq' % i
for i in range(2, 4)] + \
['/sys/class/kgsl/kgsl-3d0/thermal_pwrlevel',
'/sys/kernel/debug/clk/gpu_gx_gfx3d_clk/measure',
'/sys/kernel/debug/clk/bimc_clk/measure',
'/sys/class/thermal/thermal_zone22/temp',
'/sys/class/thermal/thermal_zone23/temp'] + \
self._devfreq_sanity_knobs))
expectations = \
[Expectation(int, min_value=30, name='battery', sleeptime=30*60),
Expectation(str, exact_value='2-3', name='online cpus')] + \
[Expectation(int, exact_value=CPU_CLOCK_RATE, name='cpu_%i clock rate' %i)
for i in range(2, 4)] + \
[Expectation(int, exact_value=2, name='gpu thermal power level'),
Expectation(long, min_value=(GPU_CLOCK_RATE - 5000),
max_value=(GPU_CLOCK_RATE + 5000),
name='measured gpu clock'),
Expectation(long, min_value=902390000, max_value=902409999,
name='measured ddr clock', sleeptime=10),
Expectation(int, max_value=41000, name='pm8994_tz temperature'),
Expectation(int, max_value=40, name='msm_therm temperature')] + \
self._devfreq_sanity_expectations
Expectation.check_all(expectations, result.splitlines())
def _discover_devfreqs(self):
self._devfreq_lock_cmds = list()
self._devfreq_sanity_knobs = list()
self._devfreq_sanity_expectations = list()
results = iter(self._adb.check('''\
KNOBS='%s'
for DEVICE in %s/*; do
if cd $DEVICE && ls $KNOBS >/dev/null; then
basename $DEVICE
cat $KNOBS
fi
done 2>/dev/null''' %
(' '.join(DevfreqKnobs._fields), DEVFREQ_DIRNAME)).splitlines())
while True:
batch = tuple(itertools.islice(results, 1 + len(DevfreqKnobs._fields)))
if not batch:
break
devfreq = batch[0]
if devfreq in DEVFREQ_BLACKLIST:
continue
path = '%s/%s' % (DEVFREQ_DIRNAME, devfreq)
knobs = DevfreqKnobs(*batch[1:])
if not 'performance' in knobs.available_governors.split():
print('WARNING: devfreq %s does not have performance governor' % path)
continue
self._devfreq_lock_cmds.append('echo performance > %s/governor' % path)
frequencies = map(int, knobs.available_frequencies.split())
if frequencies:
# choose the lowest frequency that is >= DEVFREQ_THROTTLE * max.
frequencies.sort()
target = DEVFREQ_THROTTLE * frequencies[-1]
idx = len(frequencies) - 1
while idx > 0 and frequencies[idx - 1] >= target:
idx -= 1
bench_frequency = frequencies[idx]
self._devfreq_lock_cmds.append('echo %i > %s/min_freq' %
(bench_frequency, path))
self._devfreq_lock_cmds.append('echo %i > %s/max_freq' %
(bench_frequency, path))
self._devfreq_sanity_knobs.append('%s/cur_freq' % path)
self._devfreq_sanity_expectations.append(
Expectation(int, exact_value=bench_frequency,
name='%s/cur_freq' % path))
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