1 # Copyright 2017 Google Inc. 2 # 3 # Use of this source code is governed by a BSD-style license that can be 4 # found in the LICENSE file. 5 6 from _hardware import HardwareException, Expectation 7 from _hardware_android import HardwareAndroid 8 from collections import namedtuple 9 import itertools 10 11 CPU_CLOCK_RATE = 1670400 12 GPU_CLOCK_RATE = 510000000 13 14 DEVFREQ_DIRNAME = '/sys/class/devfreq' 15 DEVFREQ_THROTTLE = 0.74 16 DEVFREQ_BLACKLIST = ('b00000.qcom,kgsl-3d0', 'soc:qcom,kgsl-busmon', 17 'soc:qcom,m4m') 18 DevfreqKnobs = namedtuple('knobs', 19 ('available_governors', 'available_frequencies', 20 'governor', 'min_freq', 'max_freq', 'cur_freq')) 21 22 class HardwarePixel(HardwareAndroid): 23 def __init__(self, adb): 24 HardwareAndroid.__init__(self, adb) 25 self._discover_devfreqs() 26 27 def __enter__(self): 28 HardwareAndroid.__enter__(self) 29 if not self._adb.is_root(): 30 return self 31 32 self._adb.shell('\n'.join(['''\ 33 stop thermal-engine 34 stop thermald 35 stop perfd 36 stop mpdecision''', 37 38 # enable and lock the two fast cores. 39 ''' 40 for N in 3 2; do 41 echo 1 > /sys/devices/system/cpu/cpu$N/online 42 echo userspace > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_governor 43 echo %i > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_max_freq 44 echo %i > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_min_freq 45 echo %i > /sys/devices/system/cpu/cpu$N/cpufreq/scaling_setspeed 46 done''' % tuple(CPU_CLOCK_RATE for _ in range(3)), 47 48 # turn off the two slow cores 49 ''' 50 for N in 1 0; do 51 echo 0 > /sys/devices/system/cpu/cpu$N/online 52 done''', 53 54 # gpu perf commands from 55 # https://developer.qualcomm.com/qfile/28823/lm80-p0436-11_adb_commands.pdf 56 ''' 57 echo 0 > /sys/class/kgsl/kgsl-3d0/bus_split 58 echo 1 > /sys/class/kgsl/kgsl-3d0/force_bus_on 59 echo 1 > /sys/class/kgsl/kgsl-3d0/force_rail_on 60 echo 1 > /sys/class/kgsl/kgsl-3d0/force_clk_on 61 echo 1000000 > /sys/class/kgsl/kgsl-3d0/idle_timer 62 echo userspace > /sys/class/kgsl/kgsl-3d0/devfreq/governor 63 echo 2 > /sys/class/kgsl/kgsl-3d0/max_pwrlevel 64 echo 2 > /sys/class/kgsl/kgsl-3d0/min_pwrlevel 65 echo 2 > /sys/class/kgsl/kgsl-3d0/thermal_pwrlevel 66 echo %i > /sys/class/kgsl/kgsl-3d0/devfreq/max_freq 67 echo %i > /sys/class/kgsl/kgsl-3d0/devfreq/min_freq 68 echo %i > /sys/class/kgsl/kgsl-3d0/max_gpuclk 69 echo %i > /sys/class/kgsl/kgsl-3d0/gpuclk''' % 70 tuple(GPU_CLOCK_RATE for _ in range(4))] + \ 71 72 self._devfreq_lock_cmds)) 73 74 return self 75 76 def sanity_check(self): 77 HardwareAndroid.sanity_check(self) 78 79 if not self._adb.is_root(): 80 return 81 82 result = self._adb.check(' '.join( 83 ['cat', 84 '/sys/class/power_supply/battery/capacity', 85 '/sys/devices/system/cpu/online'] + \ 86 ['/sys/devices/system/cpu/cpu%i/cpufreq/scaling_cur_freq' % i 87 for i in range(2, 4)] + \ 88 ['/sys/class/kgsl/kgsl-3d0/thermal_pwrlevel', 89 '/sys/kernel/debug/clk/gpu_gx_gfx3d_clk/measure', 90 '/sys/kernel/debug/clk/bimc_clk/measure', 91 '/sys/class/thermal/thermal_zone22/temp', 92 '/sys/class/thermal/thermal_zone23/temp'] + \ 93 self._devfreq_sanity_knobs)) 94 95 expectations = \ 96 [Expectation(int, min_value=30, name='battery', sleeptime=30*60), 97 Expectation(str, exact_value='2-3', name='online cpus')] + \ 98 [Expectation(int, exact_value=CPU_CLOCK_RATE, name='cpu_%i clock rate' %i) 99 for i in range(2, 4)] + \ 100 [Expectation(int, exact_value=2, name='gpu thermal power level'), 101 Expectation(long, min_value=(GPU_CLOCK_RATE - 5000), 102 max_value=(GPU_CLOCK_RATE + 5000), 103 name='measured gpu clock'), 104 Expectation(long, min_value=902390000, max_value=902409999, 105 name='measured ddr clock', sleeptime=10), 106 Expectation(int, max_value=41000, name='pm8994_tz temperature'), 107 Expectation(int, max_value=40, name='msm_therm temperature')] + \ 108 self._devfreq_sanity_expectations 109 110 Expectation.check_all(expectations, result.splitlines()) 111 112 def _discover_devfreqs(self): 113 self._devfreq_lock_cmds = list() 114 self._devfreq_sanity_knobs = list() 115 self._devfreq_sanity_expectations = list() 116 117 results = iter(self._adb.check('''\ 118 KNOBS='%s' 119 for DEVICE in %s/*; do 120 if cd $DEVICE && ls $KNOBS >/dev/null; then 121 basename $DEVICE 122 cat $KNOBS 123 fi 124 done 2>/dev/null''' % 125 (' '.join(DevfreqKnobs._fields), DEVFREQ_DIRNAME)).splitlines()) 126 127 while True: 128 batch = tuple(itertools.islice(results, 1 + len(DevfreqKnobs._fields))) 129 if not batch: 130 break 131 132 devfreq = batch[0] 133 if devfreq in DEVFREQ_BLACKLIST: 134 continue 135 136 path = '%s/%s' % (DEVFREQ_DIRNAME, devfreq) 137 138 knobs = DevfreqKnobs(*batch[1:]) 139 if not 'performance' in knobs.available_governors.split(): 140 print('WARNING: devfreq %s does not have performance governor' % path) 141 continue 142 143 self._devfreq_lock_cmds.append('echo performance > %s/governor' % path) 144 145 frequencies = map(int, knobs.available_frequencies.split()) 146 if frequencies: 147 # choose the lowest frequency that is >= DEVFREQ_THROTTLE * max. 148 frequencies.sort() 149 target = DEVFREQ_THROTTLE * frequencies[-1] 150 idx = len(frequencies) - 1 151 while idx > 0 and frequencies[idx - 1] >= target: 152 idx -= 1 153 bench_frequency = frequencies[idx] 154 self._devfreq_lock_cmds.append('echo %i > %s/min_freq' % 155 (bench_frequency, path)) 156 self._devfreq_lock_cmds.append('echo %i > %s/max_freq' % 157 (bench_frequency, path)) 158 self._devfreq_sanity_knobs.append('%s/cur_freq' % path) 159 self._devfreq_sanity_expectations.append( 160 Expectation(int, exact_value=bench_frequency, 161 name='%s/cur_freq' % path)) 162
