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!usb3kd.hub_info_from_fdo

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The !usb3kd.hub_info_from_fdo command displays information about a hub in the USB 3.0 tree.

!usb3kd.hub_info_from_fdo DeviceObject

Parameters

DeviceObject
Address of the functional device object (FDO) that represents the hub.

DLL

Usb3kd.dll

Examples

You can get the address of the FDO from the output of !usb_tree or from a variety of other debugger commands. For example, the !devstack command displays the address of the FDO. In the following example, the address of the FDO is fffffa800597a660.

3: kd> !devnode 0 1 usbhub3
Dumping IopRootDeviceNode (= 0xfffffa8003609cc0)
DevNode 0xfffffa8005981730 for PDO 0xfffffa8004ffc550
...
3: kd> !devstack 0xfffffa8004ffc550
  !DevObj   !DrvObj            !DevExt   ObjectName
  fffffa800597a660  \Driver\USBHUB3    fffffa8005ad92d0  
> fffffa8004ffc550  \Driver\USBXHCI    fffffa8005251d00  USBPDO-0
...

Now you can pass the address of the FDO to the !usb3kd.hub_info_from_fdo command.

 3: kd> !hub_info_from_fdo fffffa800597a660

## Dumping HUB Information fffffa800597a660
----------------------------------------
dt USBHUB3!_HUB_FDO_CONTEXT 0xfffffa8005ad92d0
!rcdrlogdump usbhub3 -a 0xfffffa8005ad8010
Capabilities: Initialized, Configured, HasOverCurrentProtection, SelectiveSuspendSupportedByParentStack, CannotWakeOnConnect, NotArmedForWake

Total number of ports: 4, HUB depth is 0
Number of 3.0 ports: 2 (Range 1 - 2)
Number of 2.0 ports: 2 (Range 3 - 4)

Descriptors:
    dt _USB_HUB_DESCRIPTOR 0xfffffa8005ad9728
    dt _USB_30_HUB_DESCRIPTOR 0xfffffa8005ad9728
    dt _USB_DEVICE_DESCRIPTOR 0xfffffa8005ad92d0
    dt _USB_CONFIGURATION_DESCRIPTOR 0xfffffa8005ad9770

List of PortContext: 4
    [1] !port_info 0xfffffa8005a5ca80    !device_info 0xfffffa8005b410c0
            Last Port Status(2.0): Connected Enabled Powered HighSpeedDeviceAttached
            Last Port Change: <none>
            Current Port(2.0) State: ConnectedEnabled.WaitingForPortChangeEvent
            Current Device State: ConfiguredInD0
         ...

Current Hub State: ConfiguredWithIntTransfer

Hub State History: <Event> NewState (<Operation>(),..) :

    [43] <OperationSuccess> ConfiguredWithIntTransfer 
    ...

Hub Event History:
    [ 0] PortEnableInterruptTransfer
    ...

See also

USB 3.0 Extensions

!usb3kd.hub_info

Universal Serial Bus (USB) Drivers