Data Structures for Drivers                 usbdevqlfdescr(9S)



NAME
     usbdevqlfdescr - USB device qualifier descriptor

SYNOPSIS
     #include 


INTERFACE LEVEL
     Solaris DI specific (Solaris DI)

DESCRIPTION
     The device qualifier descriptor usbdevqlfdescrt  defines
     how  fields of a high speed device's device descriptor would
     look if that device is run  at  a  different  speed.   If  a
     high-speed  device  is running currently at full/high speed,
     fields of this  descriptor  reflect  how  device  descriptor
     fields  would look if speed was changed to high/full. Please
     refer to section 9.6.2 of the USB 2.0 specification. The USB
     2.0 specification is available at www.usb.org.


     A device descriptor contains the following fields:

       uint8t     bLength             Size of this descriptor.

       uint8t     bDescriptorType     Set to USBDESCRTYPEDEVQLF.

       uint16t    bcdUSB              USB specification release
                                       number in binary coded decimal.

       uint8t     bDeviceClass        Device class code.
                                       (See usbdevdescr(9s).)

       uint8t     bDeviceSubClass     Device subclass code.(See
                                       USB 2.0 specification of
                                       applicable device class for
                                       information.)

       uint8t     bDeviceProtocol     Protocol code.(See
                                       USB 2.0 specification of
                                       applicable device class for
                                       information.)

       uint8t     bMaxPacketSize0     Maximum packet size of
                                       endpoint 0.

       uint8t     bNumConfigurations  Number of available
                                       configurations.

       uint8t     bReserved           Reserved.





SunOS 5.11           Last change: 5 Jan 2004                    1






Data Structures for Drivers                 usbdevqlfdescr(9S)



ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Architecture                 PCI-based systems           
    
     Interface stability          Committed                   
    
     Availability                 SUNWusbu                    
    


SEE ALSO
     attributes(5),     usbgetaltif(9F),      usbgetcfg(9F),
     usbgetdevdata(9F),              usbgetstringdescr(9F).
     usbparsedata(9F), usbctrlrequest(9S), usbcfgdescr(9S),
     usbdevdescr(9S),    usbepdescr(9S),    usbifdescr(9S),
     usbotherspeedcfgdescr(9S), usbstringdescr(9S)
































SunOS 5.11           Last change: 5 Jan 2004                    2