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!usbkd.usbhubs

The !usbkd.usbhubs command displays information about USB hubs.


!usbkd.usbhubs a[v]
!usbkd.usbhubs x[v]
!usbkd.usbhubs r[v]

Parameters

a

Display all hubs.

r

Display root hubs.

x

Display external hubs.

v

The output is verbose. For example, !usbhubs rv displays verbose output about all root hubs.

DLL

Usbkd.dll

Examples

Here is an example of verbose output from the !usbhubs command.

0: kd> !usbkd.usbhubs rv

args 'rv'
level: r v
ROOT HUBS
*LIST -- Root Hub List @ fffff8000217f440
*flink, blink ffffe000023215c0,ffffe000011f85c0
----------

[0] entry @: ffffe000023201a0
	!DevObj ffffe00002320050 !usbhubext ffffe000023201a0 
On Host Controller (0x8086, 0x293c) 
		Stat_AsyncResumeStartAt: 2437ee39d29bd498
		Stat_AsyncResumeCompleteAt: 24413c77d29bd498
		Stat_AsyncResume: 0x3c(60) ms
		Stat_SyncResumeStartAt: 2437ee39d29bd498
		Stat_SyncResumeCompleteAt: 2437ee39d29bd498
		Stat_SyncResume: 0x0(0) ms
Trap Regs: Event, Port, Event (ffffe000023204d0) 
	Enable: 0 Port: 0 Event 00000000
Hub Number: # 3
Number Of Ports: 4
dt usbhub!_USBHUB_FDO_FLAGS ffffe00002320ba0
>Is Root
>Power Switching: 
	 No Power Switching 
>Overcurrent: 
	 Global Overcurrent 
>PortIndicators: 
	 No PortIndicators present
>AllowWakeOnConnect: 
	 DO NOT WakeOnConnect
>CURRENT Hub Wake on Connectstate: 
	 HWC_DISARM:- do not wake system on connect/disconnect event
>CURRENT Bus Wake state: 
	 BUS_DISARM:- bus not armed for wake by this hub
>CURRENT Wake Detect state (WW Irp): 
	 HUB_DISARM:- no ww irp pending (HUB_WAKESTATE_DISARMED)
Milliamps/Port : 500ma
Power caps (0 = not reported)
	 PortPower_Registry : 0
	 PortPower_DeviceStatus : 500
	 PortPower_CfgDescriptor : 500
	 PortPower_HubStatus : 500
----------------------------------------------------------
----------

[1] entry @: ffffe000008b91a0
	!DevObj ffffe000008b9050 !usbhubext ffffe000008b91a0 
On Host Controller (0x8086, 0x2937) 
...

See also

USB 2.0 Debugger Extensions
Universal Serial Bus (USB) Drivers

 

 

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