!usbkd._ehciregs
!usbkd._ehciregs 命令显示 USB EHCI 主机控制器的运行和根集线器端口状态寄存器。
!usbkd._ehciregs StructAddr[, NumPorts]
参数
StructAddr
usbehci!_HC_OPERATIONAL_REGISTER 结构的地址。 要查找 usbehci!_HC_OPERATIONAL_REGISTER 结构的地址,请使用 !usbkd.usbhcdlist。
NumPorts
要显示的根集线器端口状态寄存器的数量。
DLL
Usbkd.dll
示例
下面是获取 usbehci!_HC_OPERATIONAL_REGISTER 结构地址的一种方法。 首先输入 !usbkd.usbhcdlist。
0: kd> !usbkd.usbhcdlist
MINIPORT List @ fffff80001e5bbd0
## List of EHCI controllers
!drvobj ffffe00001fd33a0 dt USBPORT!_USBPORT_MINIPORT_DRIVER ...
...
02. Xxxx Corporation PCI: VendorID Xxxx DeviceID Xxxx RevisionId 0002
!devobj ffffe00001ca1050
!ehci_info ffffe00001ca11a0
Operational Registers ffffd000228bf020
在前面的输出中, ffffd000228bf020
是 _HC_OPERATIONAL_REGISTER 结构的地址。
现在,将结构地址传递给 !_ehciregs。 在此示例中,第二个参数将显示范围限制为两个根集线器端口状态寄存器。
0: kd> !usbkd._ehciregs ffffd000228bf020, 2
*(ehci)HC_OPERATIONAL_REGISTER ffffd000228bf020
USBCMD 00010001
.HostControllerRun: 1
.HostControllerReset: 0
.FrameListSize: 0
.PeriodicScheduleEnable: 0
.AsyncScheduleEnable: 0
.IntOnAsyncAdvanceDoorbell: 0
.HostControllerLightReset: 0
.InterruptThreshold: 1
.ParkModeEnable: 0
.ParkModeCount: 0
USBSTS 00002008
.UsbInterrupt: 0
.UsbError: 0
.PortChangeDetect: 0
.FrameListRollover: 1
.HostSystemError: 0
.IntOnAsyncAdvance: 0
----
.HcHalted: 0
.Reclamation: 1
.PeriodicScheduleStatus: 0
.AsyncScheduleStatus: 0
USBINTR 0000003f
.UsbInterrupt: 1
.UsbError: 1
.PortChangeDetect: 1
.FrameListRollover: 1
.HostSystemError: 1
.IntOnAsyncAdvance: 1
PeriodicListBase dec8e000
AsyncListAddr dec91000
PortSC[0] 00001000
PortConnect x0
PortConnectChange x0
PortEnable x0
PortEnableChange x0
OvercurrentActive x0
OvercurrentChange x0
ForcePortResume x0
PortSuspend x0
PortReset x0
HighSpeedDevice x0
LineStatus x0
PortPower x1
PortOwnedByCC x0
PortIndicator x0
PortTestControl x0
WakeOnConnect x0
WakeOnDisconnect x0
WakeOnOvercurrent x0
PortSC[1] 00001000
PortConnect x0
PortConnectChange x0
PortEnable x0
PortEnableChange x0
OvercurrentActive x0
OvercurrentChange x0
ForcePortResume x0
PortSuspend x0
PortReset x0
HighSpeedDevice x0
LineStatus x0
PortPower x1
PortOwnedByCC x0
PortIndicator x0
PortTestControl x0
WakeOnConnect x0
WakeOnDisconnect x0