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USBFN_EVENT enumeration (usbfnbase.h)

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Defines notifications sent to class drivers.

Syntax

typedef enum _USBFN_EVENT {
  UsbfnEventMinimum,
  UsbfnEventAttach,
  UsbfnEventReset,
  UsbfnEventDetach,
  UsbfnEventSuspend,
  UsbfnEventResume,
  UsbfnEventSetupPacket,
  UsbfnEventConfigured,
  UsbfnEventUnConfigured,
  UsbfnEventPortType,
  UsbfnEventBusTearDown,
  UsbfnEventSetInterface,
  UsbfnEventMaximum
} USBFN_EVENT, *PUSBFN_EVENT;

Constants

 
UsbfnEventMinimum
The minimum value in this enumeration.
UsbfnEventAttach
VBUS is powered. No action is required.
UsbfnEventReset
USBFN has completed a USB Reset. If previously configured, class drivers should reset their state. Transfer requests will be cancelled.
UsbfnEventDetach
VBUS is no longer powered.
If previously configured, class drivers should
reset their state. Transfer requests will be cancelled.
The BusSpeed field of the notification is set appropriately.
UsbfnEventSuspend
There have been no SOF packets on the bus for 3ms.
If a class driver wants to issue a remote wake up,
the driver must use IOCTL_INTERNAL_USBFN_SIGNAL_REMOTE_WAKEUP or IOCTL_INTERNAL_USBFN_TRANSFER_IN.
UsbfnEventResume
USBFN has resumed from suspend to the previous state.
UsbfnEventSetupPacket
USBFN has received a setup packet with
bmRequestType.Type set to BMREQUEST_CLASS and
bmRequestType.Recipient set to BMREQUEST_TO_INTERFACE.
USBFN forwarded the setup packet to the class driver
specified in wIndex.LowByte.

The setup packet is available in the SetupPacket field of the
event. If the control transfer does not require a data stage,
class drivers should respond with
IOCTL_INTERNAL_USBFN_CONTROL_STATUS_HANDSHAKE_OUT.
If a data stage is required, class drivers should respond with
one or more IOCTL_INTERNAL_USBFN_TRANSFER_IN or IOCTL_INTERNAL_USBFN_TRANSFER_OUT, followed by
IOCTL_INTERNAL_USBFN_CONTROL_STATUS_HANDSHAKE_IN or IOCTL_INTERNAL_USBFN_CONTROL_STATUS_HANDSHAKE_OUT in the opposite
direction.
UsbfnEventConfigured
USBFN has received a SET_CONFIGURATION setup packet. Transfer
requests from class drivers are now permitted.
The ConfigurationValue of the notification is set to wValue.W.
UsbfnEventUnConfigured
USBFN has received a SET_CONFIGURATION setup packet with
wValue.W set to 0. If previously configured, class drivers should
reset their state. Transfer requests will be cancelled.
UsbfnEventPortType
Deprecated.
UsbfnEventBusTearDown
Deprecated.
UsbfnEventSetInterface
USBFN has received a SET_INTERFACE setup packet. On receiving this
notification the class driver should query for the new endpoint set
for the interface.
UsbfnEventMaximum
The minimum value in this enumeration.

Requirements

Requirement Value
Header usbfnbase.h