!usbkd.usbhubpd
The !usbkd.usbhubpd command displays information about a USB port.
!usbkd.usbhubpd StructAddr
Parameters
StructAddr
Address of a usbhub!_HUB_PORT_DATA structure. To get the addresses of these structures, use !usbhubext.
DLL
Usbkd.dll
Examples
Here is one way to find the address of a usbhub!_HUB_PORT_DATA. 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, you can see the suggested command !devstack ffffe00002320050. Enter this command.
0: kd> !kdexts.devstack ffffe00002320050
!DevObj !DrvObj !DevExt ObjectName
> ffffe00002320050 \Driver\usbhub ffffe000023201a0 0000002d
ffffe0000213c050 \Driver\usbehci ffffe0000213c1a0 USBPDO-3
...
In the preceding output, you can see that the address of the device extension for the FDO of the hub is ffffe000023201a0.
Pass the address of the device extension to the !usbhubext command.
0: kd> !usbkd.usbhubext ffffe000023201a0
FDO ffffe00002320050 PDO ffffe0000213c050 HubNumber# 3
dt USBHUB!_DEVICE_EXTENSION_HUB ffffe000023201a0
!usbhublog ffffe000023201a0
RemoveLock ffffe00002320668
FdoFlags ffffe00002320ba0
CurrentPowerIrp: System (0000000000000000) Device (0000000000000000)
...
## PORT DATA
PortData 1: !port2_info ffffe000021bf000 Port State = PS_WAIT_CONNECT PortChangeLock: 0, Pcq_State: Pcq_Run_Idle
PDO 0000000000000000
....
In the preceding output, ffffe000021bf000 is the address of a _HUB_PORT_DATA structure. Pass this address to !usbhubpd.
0: kd> !usbkd.usbhubpd ffffe000021bf000
PortNumber: 1
Parent Hub FDO ffffe00002320050
Device PDO <NULL>
dt USBHUB!_HUB_PORT_DATA ffffe000021bf000
dt USBHUB!_PORTDATA_FLAGS ffffe000021bf968
PortChangelist: !usblist ffffe000021bf1c8, CL [Empty]
## Port Indicators Log (latest at bottom)
## Event State Next
[EMPTY]
## Port Change Queue History (latest at bottom)
## Event State Next PcqEv_Suspend PcqEv_Resume PcqEv_ChDone Tag
01. PCE_Resume Pcq_Stop Pcq_Pause PcqEv_Reset PcqEv_Reset REQUEST_RESUME
... Pcq_Run_wBusy Pcq_Run_Idle
## Port Status History (latest at bottom)
## Current State Change Eve nt PDO CEOSP H/W Port REG Frame Inserted
01. PS_WAIT_CONNECT REQUEST_PAUSE 0000000000000000 00000 100 Age:000 512498
...