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# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) NXP 2019
import gdb
import sys
from linux.utils import CachedType, gdb_eval_or_none
from linux.lists import list_for_each_entry
generic_pm_domain_type = CachedType('struct generic_pm_domain')
pm_domain_data_type = CachedType('struct pm_domain_data')
device_link_type = CachedType('struct device_link')
def kobject_get_path(kobj):
path = kobj['name'].string()
parent = kobj['parent']
if parent:
path = kobject_get_path(parent) + '/' + path
return path
def rtpm_status_str(dev):
if dev['power']['runtime_error']:
return 'error'
if dev['power']['disable_depth']:
return 'unsupported'
_RPM_STATUS_LOOKUP = [
"active",
"resuming",
"suspended",
"suspending"
]
return _RPM_STATUS_LOOKUP[dev['power']['runtime_status']]
class LxGenPDSummary(gdb.Command):
'''Print genpd summary
Output is similar to /sys/kernel/debug/pm_genpd/pm_genpd_summary'''
def __init__(self):
super(LxGenPDSummary, self).__init__('lx-genpd-summary', gdb.COMMAND_DATA)
def summary_one(self, genpd):
if genpd['status'] == 0:
status_string = 'on'
else:
status_string = 'off-{}'.format(genpd['state_idx'])
child_names = []
for link in list_for_each_entry(
genpd['parent_links'],
device_link_type.get_type().pointer(),
'parent_node'):
child_names.append(link['child']['name'])
gdb.write('%-30s %-15s %s\n' % (
genpd['name'].string(),
status_string,
', '.join(child_names)))
# Print devices in domain
for pm_data in list_for_each_entry(genpd['dev_list'],
pm_domain_data_type.get_type().pointer(),
'list_node'):
dev = pm_data['dev']
kobj_path = kobject_get_path(dev['kobj'])
gdb.write(' %-50s %s\n' % (kobj_path, rtpm_status_str(dev)))
def invoke(self, arg, from_tty):
if gdb_eval_or_none("&gpd_list") is None:
raise gdb.GdbError("No power domain(s) registered")
gdb.write('domain status children\n');
gdb.write(' /device runtime status\n');
gdb.write('----------------------------------------------------------------------\n');
for genpd in list_for_each_entry(
gdb.parse_and_eval('&gpd_list'),
generic_pm_domain_type.get_type().pointer(),
'gpd_list_node'):
self.summary_one(genpd)
LxGenPDSummary()