USB provides a low-cost means for attaching peripheral devices, including mass-storage devices, keyboards, mice, and printers, to a system. For complete information on the USB architecture, visit the USB website at http://www.usb.org.

USBA supports 126 hot-pluggable USB devices per USB bus. The maximum data transfer rate is 1.5 Mbits (low speed USB 1.x) or 12 Mbits (full speed USB 1.x) or 480 MBits (high speed USB 2.0) Mbits per second (Mbps).

USBA adheres to the Universal Serial Bus 2.0 specification and provides a transport layer abstraction to USB client drivers.

For information on how to write USB client drivers, see Writing Device Drivers. For the latest information on writing USB drivers, visit http://developers.sun.com/solaris/developer/support/driver/usb.html. For a complete list of USBA interfaces, see Intro(9F) and Intro(9S).

Devices without a driver may have a libusb(3LIB) application. For more information, see /usr/sfw/share/doc/libusb/libusb.txt.

Listed below are drivers and modules which either utilize or are utilized by USBA. Drivers in /kernel/drv are 32 bit drivers (x86 only). Drivers in /kernel/drv/sparcv9 or /kernel/drv/amd64 are 64 bit drivers.

Client Driver Function/Device

kernel/drv/[sparcv9|amd64/]hid HID class
kernel/drv/[sparcv9|amd64/]hubd hub class
kernel/drv/[sparcv9|amd64/]hwahc HWA Host Controller class
kernel/drv/[sparcv9|amd64/]hwarc HWA Radio Controller class
kernel/drv/[sparcv9|amd64/]scsa2usb mass storage class
kernel/drv/[sparcv9|amd64/]usbprn printer class
kernel/drv/[sparcv9|amd64/]usb_as audio streaming class
kernel/drv/[sparcv9|amd64/]usb_ac audio control class
kernel/drv/[sparcv9|amd64/]usbvc video class
kernel/drv/[sparcv9|amd64/]usb_mid multi-interface device
kernel/drv/[sparcv9|amd64/]usb_ia interface-association driver
kernel/drv/[sparcv9|amd64/]usbser_edge Edgeport USB to serial port
kernel/drv/[sparcv9|amd64/]usbsksp Keyspan USB to serial port
kernel/drv/[sparcv9|amd64/]usbsprl pl2303 USB to serial port
kernel/drv/[sparcv9|amd64/]usbsacm CDC ACM class to serial port
kernel/drv/[sparcv9|amd64/]ugen generic USB driver
kernel/drv/[sparcv9|amd64/]wusb_ca WUSB Cable Association class
kernel/drv/[sparcv9|amd64/]ohci open host controller driver
kernel/drv/[sparcv9|amd64/]uhci universal host controller driver
kernel/drv/[sparcv9|amd64/]ehci enhanced host controller driver

Client Streams Modules Function/Device
/kernel/strmod/[sparcv9|amd64]usbkbm Keyboad
/kernel/strmod/[sparcv9|amd64]usbms Mouse
/kernel/strmod/[sparcv9|amd64]usb_ah Audio HID

Host Controller Interface Drivers Device

/kernel/drv/[sparcv9|amd64]ehci Enhanced HCI
/kernel/drv/[sparcv9|amd64]ohci Open HCI
/kernel/drv/[sparcv|amd64/]uhci Univeral HCI

See attributes(5) for a description of the following attributes:

cfgadm_usb(1M), libusb(3LIB), attributes(5), ehci(7D), hid(7D), hubd(7D), ohci(7D), scsa2usb(7D), uhci(7D), usb_ac(7D), usb_as(7D), usb_ia(7D), usb_mid(7D), usbprn(7D), usbsacm(7D), usbser_edge(7D), usbsksp(7D), usbsprl(7D), usbvc(7D), ugen(7D), virtualkm(7D). Intro(9F), Intro(9S)

Writing Device Drivers

Universal Serial Bus Specification 2.0.

Interface Association Descriptor Engineering Change Notice (ECN)

System Administration Guide: Basic Administration

http://www.sun.com

Booting from USB mass-storage devices is not supported on SPARC, but is supported on X86.

The messages described below may appear on the system console as well as being logged. All messages are formatted in the following manner:

WARNING: Error message...

No driver found for device <device_name> (interface <number> node name=<node_name>)

Draining callbacks timed out!

The following messages may be logged into the system log. They are formatted in the following manner:

<device path><usba<instance number>): message...

Incorrect USB driver version for <n.m>.