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Lv Zheng89ca78a2013-06-20 08:02:44 +08001What: /sys/devices/.../sun
Yasuaki Ishimatsubb74ac22012-11-16 02:56:59 +01002Date: October 2012
3Contact: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
4Description:
5 The file contains a Slot-unique ID which provided by the _SUN
6 method in the ACPI namespace. The value is written in Advanced
7 Configuration and Power Interface Specification as follows:
8
9 "The _SUN value is required to be unique among the slots of
10 the same type. It is also recommended that this number match
11 the slot number printed on the physical slot whenever possible."
12
13 So reading the sysfs file, we can identify a physical position
14 of the slot in the system.