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-rw-r--r--scripts/gdb/linux/genpd.py83
1 files changed, 83 insertions, 0 deletions
diff --git a/scripts/gdb/linux/genpd.py b/scripts/gdb/linux/genpd.py
new file mode 100644
index 000000000000..6ca93bd2949e
--- /dev/null
+++ b/scripts/gdb/linux/genpd.py
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) NXP 2019
+
+import gdb
+import sys
+
+from linux.utils import CachedType
+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'])
+
+ slave_names = []
+ for link in list_for_each_entry(
+ genpd['master_links'],
+ device_link_type.get_type().pointer(),
+ 'master_node'):
+ slave_names.apend(link['slave']['name'])
+
+ gdb.write('%-30s %-15s %s\n' % (
+ genpd['name'].string(),
+ status_string,
+ ', '.join(slave_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):
+ gdb.write('domain status slaves\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()