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man pages section 9: DDI and DKI Properties and Data Structures

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Updated: Thursday, June 13, 2019
 
 

usb_dev_qlf_descr(9S)

Name

usb_dev_qlf_descr - USB device qualifier descriptor

Synopsis

#include <sys/usb/usba.h> 

Interface Level

Solaris DDI specific (Solaris DDI)

Description

The device qualifier descriptor usb_dev_qlf_descr_t 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:


uint8_t     bLength             Size of this descriptor.

uint8_t     bDescriptorType     Set to USB_DESCR_TYPE_DEV_QLF.

uint16_t    bcdUSB              USB specification release
                                number in binary coded decimal.

uint8_t     bDeviceClass        Device class code. 
                                (See usb_dev_descr(9s).)

uint8_t     bDeviceSubClass     Device subclass code.(See
                                USB 2.0 specification of
                                applicable device class for
                                information.)

uint8_t     bDeviceProtocol     Protocol code.(See
                                USB 2.0 specification of
                                applicable device class for
                                information.)

uint8_t     bMaxPacketSize0     Maximum packet size of
                                endpoint 0.

uint8_t     bNumConfigurations  Number of available
                                configurations.

uint8_t     bReserved           Reserved.

Attributes

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Architecture
PCI-based systems
Interface Stability
Committed
Availability
system/io/usb

See Also

attributes(7), usb_get_alt_if(9F), usb_get_cfg(9F), usb_get_dev_data(9F), usb_get_string_descr(9F). usb_parse_data(9F), usb_cfg_descr(9S), usb_ctrl_request(9S), usb_dev_descr(9S), usb_ep_descr(9S), usb_if_descr(9S), usb_other_speed_cfg_descr(9S), usb_string_descr(9S)