# tree /sys/bus/pci/devices/0000\:00\:14.1
/sys/bus/pci/devices/0000:00:14.1
|-- broken_parity_status
|-- bus -> ../../../bus/pci
|-- class
|-- config
|-- device
|-- driver -> ../../../bus/pci/drivers/ATIIXP_IDE
|-- enable
|-- ide0
| |-- 0.0
| | |-- block:hda -> ../../../../../block/hda
| | |-- bus -> ../../../../../bus/ide
| | |-- drivename
| | |-- driver -> ../../../../../bus/ide/drivers/ide-cdrom
| | |-- media
| | |-- modalias
| | |-- power
| | | |-- state
| | | `-- wakeup
| | |-- subsystem -> ../../../../../bus/ide
| | `-- uevent
| |-- power
| | |-- state
| | `-- wakeup
| `-- uevent
|-- irq
|-- local_cpus
|-- modalias
|-- power
| |-- state
| `-- wakeup
|-- resource
|-- resource4
|-- subsystem -> ../../../bus/pci
|-- subsystem_device
|-- subsystem_vendor
|-- uevent
`-- vendor
12 directories, 25 files
------------
# cat /sys/bus/pci/devices/0000\:00\:14.1/broken_parity_status
0
# cat /sys/bus/pci/devices/0000\:00\:14.1/class
0x01018a
# cat /sys/bus/pci/devices/0000\:00\:14.1/device
0x438c
# cat /sys/bus/pci/devices/0000\:00\:14.1/enable
1
# cat /sys/bus/pci/devices/0000\:00\:14.1/ide0/0.0/media
cdrom
# cat /sys/bus/pci/devices/0000\:00\:14.1/ide0/0.0/modalias
ide:m-cdrom
# cat /sys/bus/pci/devices/0000\:00\:14.1/ide0/0.0/drivename
hda
# cat /sys/bus/pci/devices/0000\:00\:14.1/ide0/0.0/power/state
0
# cat /sys/bus/pci/devices/0000\:00\:14.1/ide0/0.0/power/wakeup
# cat /sys/bus/pci/devices/0000\:00\:14.1/ide0/power/state
0
# cat /sys/bus/pci/devices/0000\:00\:14.1/ide0/power/wakeup
# cat /sys/bus/pci/devices/0000\:00\:14.1/subsystem_device
0x01f5
# cat /sys/bus/pci/devices/0000\:00\:14.1/subsystem_vendor
0x1028
# cat /sys/bus/pci/devices/0000\:00\:14.1/resource
0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000008420 0x000000000000842f 0x0000000000000101
0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000 0x0000000000000000 0x0000000000000000
# cat /sys/bus/pci/devices/0000\:00\:14.1/uevent
cat: /sys/bus/pci/devices/0000:00:14.1/uevent: Permission denied
what is uevent ?
Onkar
