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6 .TH USB_CFG_DESCR 9S "Jan 5, 2004"
8 usb_cfg_descr \- USB configuration descriptor
12 #include <sys/usb/usba.h>
18 Solaris DDI specific (Solaris DDI)
22 The \fBusb_cfg_descr_t\fR configuration descriptor defines attributes of a
23 configuration. A configuration contains one or more interfaces. A configuration
24 descriptor acts as a header for the group of other descriptors describing the
25 subcomponents (for example, interfaces and endpoints) of a configuration.
26 Please refer to Section \fI9.6.3\fR of the \fIUSB 2.0\fR specification. The
27 \fIUSB 2.0\fR specification is available at \fIwww.usb.org\fR.
30 One or more configuration descriptors are retrieved from a USB device during
31 device enumeration. They can be accessed via \fBusb_get_dev_data\fR(9F).
34 A configuration descriptor has the following fields:
38 uint8_t bLength Size of this descriptor
41 uint8_t bDescriptorType Set to USB_DESCR_TYPE_CFG.
43 uint16_t wTotalLength Total length of data returned
44 including this and all other
45 descriptors in this configuration.
47 uint8_t bNumInterfaces Number of interfaces in this
50 uint8_t bConfigurationValue ID of this configuration
53 uint8_t iConfiguration Index of optional configuration
56 uint8_t bmAttributes Configuration characteristics
59 uint8_t bMaxPower Maximum power consumption, in
62 Configuration descriptors define the following bmAttributes:
63 USB_CFG_ATTR_SELFPWR - Set if config not using bus power.
64 USB_CFG_ATTR_REMOTE_WAKEUP - Set if config supports rem wakeup.
71 See \fBattributes\fR(5) for descriptions of the following attributes:
79 ATTRIBUTE TYPE ATTRIBUTE VALUE
81 Architecture PCI-based systems
83 Interface stability Committed
89 \fBattributes\fR(5), \fBusb_get_alt_if\fR(9F), \fBusb_get_cfg\fR(9F),
90 \fBusb_get_dev_data\fR(9F), \fBusb_get_string_descr\fR(9F),
91 \fBusb_parse_data\fR(9F), \fBusb_ctrl_request\fR(9S), \fBusb_dev_descr\fR(9S),
92 \fBusb_dev_qlf_descr\fR(9S), \fBusb_ep_descr\fR(9S), \fBusb_if_descr\fR(9S),
93 \fBusb_other_speed_cfg_descr\fR(9S), \fBusb_string_descr\fR(9S)