EFI USB DEVICE REQUEST

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Prototype

typedef struct {
  UINT8  RequestType;
  UINT8  Request;
  UINT16 Value;
  UINT16 Index;
  UINT16 Length;
} EFI_USB_DEVICE_REQUEST;

Members

Member Description
RequestType The field identifies the characteristics of the specific request.
Request This field specifies the particular request.
Value This field is used to pass a parameter to USB device that is specific to the request.
Index This field is also used to pass a parameter to USB device that is specific to the request.
Length This field specifies the length of the data transferred during the second phase of the control transfer. If it is 0, then there is no data phase in this transfer.

Copyright (C) 2008,2010 Phoenix Technologies Ltd. All Rights Reserved. Portions copyright (C) 2008 UEFI Forum, Inc. Used with permission.

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