ROOTHUB_20PORT_INFO structure (ucxroothub.h)

Provides information about a USB 2.0 root hub port. This structure is passed by UCX in the EVT_UCX_ROOTHUB_GET_20PORT_INFO callback function.

Syntax

typedef struct _ROOTHUB_20PORT_INFO {
 USHORT PortNumber;
 UCHAR MinorRevision;
 UCHAR HubDepth;
 TRISTATE Removable;
 TRISTATE IntegratedHubImplemented;
 TRISTATE DebugCapable;
 CONTROLLER_USB_20_HARDWARE_LPM_FLAGS ControllerUsb20HardwareLpmFlags;
} ROOTHUB_20PORT_INFO, *PROOTHUB_20PORT_INFO;

Members

PortNumber

The USB 2.0 root hub port number.

MinorRevision

Minor revision number.

HubDepth

The hub depth limit.

Removable

A TRISTATE value that indicates if the port is removable.

IntegratedHubImplemented

A TRISTATE value that indicates if the port is implemented.

DebugCapable

A TRISTATE value that indicates if the port is debug capable.

ControllerUsb20HardwareLpmFlags

A value that indicates Link Power Management (LPM) flags for the controller.

Requirements