| # Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import glob, logging, os, re, commands |
| from autotest_lib.client.bin import test, utils |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.cros import power_status |
| |
| |
| # Specify registers to check. The format needs to be: |
| # register offset : ('bits', 'expression') |
| DMI_BAR_CHECKS = { |
| 'cpuA': { |
| '0x88': [('1:0', 3)], |
| '0x200': [('27:26', 0)], |
| '0x210': [('2:0', 1), ('15:8', 1)], |
| '0xc28': [('5:1', 7)], |
| '0xc2e': [('5', 1)], |
| '0xc30': [('11', 0), ('10:8', 4)], |
| '0xc34': [('9:4', 7), ('0', 1)], |
| }, |
| 'cpuB': { |
| # http://www.intel.com/content/dam/doc/datasheet/2nd-gen-core-family-mobile-vol-2-datasheet.pdf |
| # PCIE DMI Link Control Register |
| # -- [1:0] : ASPM State 0=Disable, 1=L0s, 2=reserved, 3=L0s&L1 |
| '0x88': [('1:0', 3)], |
| }, |
| } |
| |
| # http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/2nd-gen-core-family-mobile-vol-1-datasheet.pdf |
| # PM_PDWN_Config_ |
| # -- [12] : Global power-down (GLPDN). 1 == global, 0 == per rank |
| # -- [11:8] : Power-down mode. 0->0x7. Higher is lower power |
| # -- [7:0] : Power-down idle timer. Lower is better. Minimum |
| # recommended is 0xf |
| MCH_PM_PDWN_CONFIG = [('12', 0), ('11:8', 0x6), ('7:0', 0x40)] |
| |
| MCH_BAR_CHECKS = { |
| 'cpuA': {}, |
| 'cpuB': { |
| # mmc0 |
| '0x40b0': MCH_PM_PDWN_CONFIG, |
| # mmc1 |
| '0x44b0': MCH_PM_PDWN_CONFIG, |
| # single mmc |
| '0x4cb0': MCH_PM_PDWN_CONFIG, |
| }, |
| } |
| |
| MSR_CHECKS = { |
| 'cpuA': { |
| '0xe2': [('7', 0), ('2:0', 4)], |
| '0x198': [('28:24', 6)], |
| '0x1a0': [('33:32', 3), ('26:25', 3), ('16', 1)], |
| }, |
| 'cpuB': { |
| # VMX disabled. |
| '0x3a': [('2:0', 1)], |
| # IA32_ENERGY_PERF_BIAS[3:0] -- 0 == hi-perf, 6 balanced, 15 powersave |
| '0x1b0': [('3:0', 6)], |
| }, |
| } |
| |
| # Give an ASPM exception for these PCI devices. ID is taken from lspci -n. |
| ASPM_EXCEPTED_DEVICES = { |
| 'cpuA': [ |
| # Intel 82801G HDA Controller |
| '8086:27d8' |
| ], |
| 'cpuB': [ |
| # Intel HDA Controller |
| '8086:1c20' |
| ], |
| } |
| |
| GFX_CHECKS = { |
| 'cpuB': {'i915_enable_rc6': 1, 'i915_enable_fbc': 1, 'powersave': 1, |
| 'semaphores':1 } |
| } |
| |
| |
| SUBTESTS = ['dmi', 'mch', 'msr', 'pcie_aspm', 'wifi', 'usb', 'storage', |
| 'audio', 'filesystem', 'graphics'] |
| |
| |
| class power_x86Settings(test.test): |
| version = 1 |
| |
| def run_once(self): |
| if not self._check_cpu_type(): |
| raise error.TestNAError('Unsupported CPU') |
| |
| self._rdmsr_cmd = 'iotools rdmsr 0' |
| self._pci_read32_cmd = 'iotools pci_read32' |
| self._mmio_read32_cmd = 'iotools mmio_read32' |
| |
| status = power_status.get_status() |
| if status.linepower[0].online: |
| logging.info('AC Power is online') |
| self._on_ac = True |
| else: |
| logging.info('AC Power is offline') |
| self._on_ac = False |
| |
| failures = '' |
| |
| for testname in SUBTESTS: |
| logging.info("SUBTEST = %s", testname) |
| func = getattr(self, "_verify_%s_power_settings" % testname) |
| fail_count = func() |
| if fail_count: |
| failures += '%s_failures(%d) ' % (testname, fail_count) |
| |
| if failures: |
| raise error.TestFail(failures) |
| |
| |
| def _check_cpu_type(self): |
| cpuinfo = utils.read_file('/proc/cpuinfo') |
| |
| # Look for Intel Atom N4xx or N5xx series CPUs |
| if re.search(r'Intel.*Atom.*N[45]', cpuinfo): |
| self._cpu_type = 'cpuA' |
| return True |
| if re.search(r'Intel.*Celeron.*8[1456][07]', cpuinfo): |
| self._cpu_type = 'cpuB' |
| return True |
| if re.search(r'Intel.*Core.*i[357]-2[357][0-9][0-9]', cpuinfo): |
| self._cpu_type = 'cpuB' |
| return True |
| |
| logging.info(cpuinfo) |
| return False |
| |
| |
| def _verify_wifi_power_settings(self): |
| if self._on_ac: |
| expected_state = 'off' |
| else: |
| expected_state = 'on' |
| |
| iwconfig_out = utils.system_output('iwconfig 2>&1', retain_output=True) |
| match = re.search(r'Power Management:(.*)', iwconfig_out) |
| if match and match.group(1) == expected_state: |
| return 0 |
| |
| logging.info(iwconfig_out) |
| return 1 |
| |
| |
| def _verify_storage_power_settings(self): |
| if self._on_ac: |
| return 0 |
| |
| expected_state = 'min_power' |
| |
| dirs_path = '/sys/class/scsi_host/host*' |
| dirs = glob.glob(dirs_path) |
| if not dirs: |
| logging.info('scsi_host paths not found') |
| return 1 |
| |
| for dirpath in dirs: |
| link_policy_file = os.path.join(dirpath, |
| 'link_power_management_policy') |
| if not os.path.exists(link_policy_file): |
| logging.debug('path does not exist: %s', link_policy_file) |
| continue |
| |
| out = utils.read_one_line(link_policy_file) |
| logging.debug('storage: path set to %s for %s', |
| out, link_policy_file) |
| if out == expected_state: |
| return 0 |
| |
| return 1 |
| |
| |
| def _verify_usb_power_settings(self): |
| if self._on_ac: |
| expected_state = 'on' |
| else: |
| expected_state = 'auto' |
| |
| dirs_path = '/sys/bus/usb/devices/*/power' |
| dirs = glob.glob(dirs_path) |
| if not dirs: |
| logging.info('USB power path not found') |
| return 1 |
| |
| errors = 0 |
| for dirpath in dirs: |
| level_file = os.path.join(dirpath, 'level') |
| if not os.path.exists(level_file): |
| logging.info('USB: power level file not found for %s', dir) |
| continue |
| |
| out = utils.read_one_line(level_file) |
| logging.debug('USB: path set to %s for %s', |
| out, level_file) |
| if out != expected_state: |
| errors += 1 |
| logging.error("Error(%d), %s == %s, but expected %s", errors, |
| level_file, out, expected_state) |
| |
| return errors |
| |
| |
| def _verify_audio_power_settings(self): |
| path = '/sys/module/snd_hda_intel/parameters/power_save' |
| out = utils.read_one_line(path) |
| logging.debug('Audio: %s = %s', path, out) |
| power_save_timeout = int(out) |
| |
| # Make sure that power_save timeout parameter is zero if on AC. |
| if self._on_ac: |
| if power_save_timeout == 0: |
| return 0 |
| else: |
| logging.debug('Audio: On AC power but power_save = %d', \ |
| power_save_timeout) |
| return 1 |
| |
| # Make sure that power_save timeout parameter is non-zero if on battery. |
| elif power_save_timeout > 0: |
| return 0 |
| |
| logging.debug('Audio: On battery power but power_save = %d', \ |
| power_save_timeout) |
| return 1 |
| |
| |
| def _verify_filesystem_power_settings(self): |
| mount_output = commands.getoutput('mount | fgrep commit=').split('\n') |
| if len(mount_output) == 0: |
| logging.debug('No file system entries with commit intervals found.') |
| return 1 |
| |
| errors = 0 |
| # Parse for 'commit' param |
| for line in mount_output: |
| try: |
| commit = int(re.search(r'(commit=)([0-9]*)', line).group(2)) |
| except: |
| errors += 1 |
| logging.error('Error(%d), reading commit value from \'%s\'', |
| errors, line) |
| continue |
| |
| # Check for the correct commit interval. |
| if commit != 600: |
| errors += 1 |
| logging.error('Error(%d), incorrect commit interval %d', errors, |
| commit) |
| |
| return errors |
| |
| |
| def _verify_graphics_power_settings(self): |
| """Verify that power-saving for graphics are configured properly. |
| |
| Returns: |
| 0 if no errors, otherwise the number of errors that occurred. |
| """ |
| errors = 0 |
| |
| if self._cpu_type in GFX_CHECKS: |
| checks = GFX_CHECKS[self._cpu_type] |
| for param_name in checks: |
| param_path = '/sys/module/i915/parameters/%s' % param_name |
| if not os.path.exists(param_path): |
| errors += 1 |
| logging.error('Error(%d), %s not found', errors, param_path) |
| else: |
| out = utils.read_one_line(param_path) |
| logging.debug('Graphics: %s = %s', param_path, out) |
| value = int(out) |
| if value != checks[param_name]: |
| errors += 1 |
| logging.error('Error(%d), %s = %d but should be %d', |
| errors, param_path, value, |
| checks[param_name]) |
| |
| return errors |
| |
| |
| def _verify_pcie_aspm_power_settings(self): |
| errors = 0 |
| out = utils.system_output('lspci -n') |
| for line in out.splitlines(): |
| slot, _, pci_id = line.split()[0:3] |
| slot_out = utils.system_output('lspci -s %s -vv' % slot, |
| retain_output=True) |
| match = re.search(r'LnkCtl:(.*);', slot_out) |
| if match: |
| if pci_id in ASPM_EXCEPTED_DEVICES[self._cpu_type]: |
| continue |
| |
| split = match.group(1).split() |
| if split[1] == 'Disabled' or \ |
| (split[2] == 'Enabled' and split[1] != 'L1'): |
| errors += 1 |
| logging.info(slot_out) |
| logging.error('Error(%d), %s ASPM off or no L1 support', |
| errors, slot) |
| else: |
| logging.info('PCIe: LnkCtl not found for %s', line) |
| |
| return errors |
| |
| |
| def _verify_dmi_power_settings(self): |
| # DMIBAR is at offset 0x68 of B/D/F 0/0/0 |
| cmd = '%s 0 0 0 0x68' % (self._pci_read32_cmd) |
| self._dmi_bar = int(utils.system_output(cmd), 16) & 0xfffffffe |
| logging.debug('DMI BAR is %s', hex(self._dmi_bar)) |
| |
| return self._verify_registers('dmi', self._read_dmi_bar, |
| DMI_BAR_CHECKS[self._cpu_type]) |
| |
| |
| def _verify_mch_power_settings(self): |
| # MCHBAR is at offset 0x48 of B/D/F 0/0/0 |
| cmd = '%s 0 0 0 0x48' % (self._pci_read32_cmd) |
| self._mch_bar = int(utils.system_output(cmd), 16) & 0xfffffffe |
| logging.debug('MCH BAR is %s', hex(self._mch_bar)) |
| |
| return self._verify_registers('mch', self._read_mch_bar, |
| MCH_BAR_CHECKS[self._cpu_type]) |
| |
| |
| def _verify_msr_power_settings(self): |
| return self._verify_registers('msr', self._read_msr, |
| MSR_CHECKS[self._cpu_type]) |
| |
| |
| def _verify_registers(self, reg_type, read_fn, match_list): |
| errors = 0 |
| for k, v in match_list.iteritems(): |
| r = read_fn(k) |
| for item in v: |
| good = self._shift_mask_match(r, item) |
| if not good: |
| errors += 1 |
| logging.error('Error(%d), %s: reg = %s val = %s match = %s', |
| errors, reg_type, k, hex(r), v) |
| return errors |
| |
| |
| def _shift_mask_match(self, value, match): |
| expr = match[1] |
| bits = match[0].split(':') |
| hi_bit = int(bits[0]) |
| if len(bits) == 2: |
| lo_bit = int(bits[1]) |
| else: |
| lo_bit = int(bits[0]) |
| |
| value >>= lo_bit |
| mask = (1 << (hi_bit - lo_bit + 1)) - 1 |
| value &= mask |
| |
| good = (value == expr) |
| if not good: |
| logging.error('FAILED: bits = %s value = %s mask = %s expr = %s', |
| bits, hex(value), mask, expr) |
| return good |
| |
| |
| def _read_dmi_bar(self, offset): |
| return self._read_mmio_read32(self._dmi_bar + int(offset, 16)) |
| |
| |
| def _read_mch_bar(self, offset): |
| return self._read_mmio_read32(self._mch_bar + int(offset, 16)) |
| |
| |
| def _read_mmio_read32(self, address): |
| cmd = '%s %s' % (self._mmio_read32_cmd, address) |
| return int(utils.system_output(cmd), 16) |
| |
| |
| def _read_msr(self, register): |
| cmd = '%s %s' % (self._rdmsr_cmd, register) |
| return int(utils.system_output(cmd), 16) |
