Manual Pages for UNIX Operating System command usage for man usb_cfg_descr

Data Structures for Drivers                     usb_cfg_descr(9S)



NAME
     usb_cfg_descr - USB configuration descriptor

SYNOPSIS
     #include 


INTERFACE LEVEL
     Solaris DDI specific (Solaris DDI)

DESCRIPTION
     The usb_cfg_descr_t configuration descriptor defines  attri-
     butes  of  a  configuration. A configuration contains one or
     more interfaces. A configuration descriptor acts as a header
     for  the  group  of other descriptors describing the subcom-
     ponents (for example, interfaces and endpoints) of a  confi-
     guration.  Please  refer  to  Section  9.6.3  of the USB 2.0
     specification. The USB 2.0  specification  is  available  at
     www.usb.org.


     One or more configuration descriptors are retrieved  from  a
     USB  device  during device enumeration. They can be accessed
     via usb_get_dev_data(9F).


     A configuration descriptor has the following fields:

       uint8_t         bLength                 Size of this descriptor
                                               in bytes.

       uint8_t         bDescriptorType         Set to USB_DESCR_TYPE_CFG.

       uint16_t        wTotalLength            Total length of data returned
                                               including this and all other
                                               descriptors in this configuration.

       uint8_t         bNumInterfaces          Number of interfaces in this
                                               configuration.

       uint8_t         bConfigurationValue     ID of this configuration
                                               (1-based).

       uint8_t         iConfiguration          Index of optional configuration
                                               string. Valid if > 0.

       uint8_t         bmAttributes            Configuration characteristics
                                               (See below).

       uint8_t         bMaxPower               Maximum power consumption, in
                                               2mA units.




SunOS 5.11           Last change: 5 Jan 2004                    1






Data Structures for Drivers                     usb_cfg_descr(9S)



       Configuration descriptors define the following bmAttributes:
            USB_CFG_ATTR_SELFPWR       -      Set if config not using bus power.
            USB_CFG_ATTR_REMOTE_WAKEUP -      Set if config supports rem wakeup.


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



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Architecture                | PCI-based systems           |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | Availability                | system/header/header-usb    |
    |_____________________________|_____________________________|


SEE ALSO
     attributes(5),     usb_get_alt_if(9F),      usb_get_cfg(9F),
     usb_get_dev_data(9F),              usb_get_string_descr(9F),
     usb_parse_data(9F), usb_ctrl_request(9S), usb_dev_descr(9S),
     usb_dev_qlf_descr(9S),  usb_ep_descr(9S),  usb_if_descr(9S),
     usb_other_speed_cfg_descr(9S), usb_string_descr(9S)



























SunOS 5.11           Last change: 5 Jan 2004                    2