!usbkd.hub2_info_from_fdo

The !usbkd.hub2_info_from_fdo command displays information about a USB hub.

!usbkd.hub2_info_from_fdo FDO

Parameters

FDO

Address of the functional device object (FDO) for a USB hub.

DLL

Usbkd.dll

Examples

Here is one way to find the address of the FDO for a USB hub. First enter !usbkd.usb2tree.

0: kd> !usbkd.usb2tree
...
2)!ehci_info ffffe00001ca11a0 !devobj ffffe00001ca1050 PCI: VendorId 8086 DeviceId 293c RevisionId 0002 
    RootHub !hub2_info ffffe000023201a0 !devstack ffffe00002320050

In the preceding output, the address of the FDO for the hub appears as the argument of the suggested command !devstack ffffe00002320050.

Now pass the address of the FDO to the !hub2_info_from_fdo command.

0: kd> !usbkd.hub2_info_from_fdo ffffe00002320050
usbhubext
*****************************************************************************

FDO ffffe00002320050 PDO ffffe0000213c050 HubNumber# 3
dt USBHUB!_DEVICE_EXTENSION_HUB ffffe000023201a0
!usbhublog ffffe000023201a0
RemoveLock ffffe00002320668
FdoFlags ffffe00002320ba0

CurrentPowerIrp: System (0000000000000000) Device (0000000000000000)

ObjReferenceList: !usblist ffffe00002320b70, RL 
ExceptionList: !usblist ffffe00002321498, EL [Empty]
DmTimerListHead: !usblist ffffe00002321040, TL [Empty]
PdoRemovedListHead: !usblist ffffe00002321478, PL [Empty]
PdoPresentListHead: !usblist ffffe00002321468, PL 
WorkItemListHead: !usblist ffffe00002320c80, WI [Empty]
SshBusyListHead: !usblist ffffe00002320dc0, BL 


PnP FUNC HISTORY (latest at bottom)
----------------------------------------
01. IRP_MN_QUERY_DEVICE_RELATIONS
...

POWER FUNC HISTORY (latest at bottom)
--------------------------------------------------
01. IRP_MN_QUERY_POWER    - PowerSystemHibernate
...

HARD RESET STATE HISTORY (latest at bottom)
----------------------------------------------------------------------------------------------------
    EVENT                           STATE                                   NEXT
----------------------------------------------------------------------------------------------------
01. HRE_Pause                       HReset_WaitReady                        HReset_Paused                           
...

PNP STATE HISTORY (latest at bottom)
----------------------------------------------------------------------------------------------------
    EVENT                           STATE                                   NEXT
----------------------------------------------------------------------------------------------------
01. Ev_SYSTEM_POWER                 FDO_WaitPnpStop                         FDO_WaitPnpStop                         
...

POWER STATE HISTORY (latest at bottom)
----------------------------------------------------------------------------------------------------
    EVENT                           STATE                                   NEXT
----------------------------------------------------------------------------------------------------
01. Ev_SET_POWER_S0                 FdoSx_Dx                                FdoWaitS0IoComplete_Dx                  
...

BUS STATE HISTORY (latest at bottom)
----------------------------------------------------------------------------------------------------
    EVENT                           STATE                                   NEXT
----------------------------------------------------------------------------------------------------
01. BE_BusSuspend                   BS_BusPause                             BS_BusSuspend                           
...

SSH_EnabledStatus: [SSH_ENABLED_VIA_POWER_POLICY]

SSH STATE HISTORY (latest at bottom)
----------------------------------------------------------------------------------------------------
    EVENT                           STATE                                   NEXT
----------------------------------------------------------------------------------------------------
01. SSH_Event_ResumeHubComplete     SSH_State_HubPendingResume              SSH_State_HubActive                     
...

PORT DATA
-------------------------------------------------------------------------------------------------------------------
PortData 1: !port2_info ffffe000021bf000 Port State = PS_WAIT_CONNECT PortChangeLock: 0, Pcq_State: Pcq_Run_Idle             
     PDO 0000000000000000 
...

See also

USB 2.0 Debugger Extensions
Universal Serial Bus (USB) Drivers

 

 

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