Copyright 2006 Sun Microsystems, Inc. All rights reserved.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
device@unit-address
The usb_mid driver is a USBA (Solaris Universal Serial Bus Architecture)-compliant nexus driver that binds to device level nodes of a composite (multi interface) device if no vendor or class-specific driver is available. The usb_mid driver creates interface nodes or interface association nodes and attempts to bind drivers to them. If no driver is found for interface association nodes, usb_ia(7D) is bound by default.
The usb_mid driver also supports a ugen(7D) interface allowing raw access to the device, for example by libusb(3LIB) applications, by passing the drivers bound to each interface. Since a libusb application might change the state of the device, you should not access the device through the child interface drivers. Note that the usb_mid driver creates a ugen interface only if none of its children are explicitly bound to the ugen(7D) driver. Additionally, usb_mid does not create children.
32-bit x86 ELF kernel module
64-bit x86 ELF kernel module
64-bit SPARC ELF kernel module
ugen(7D) nodes.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| Architecture SPARC & x86, PCI-based systems |
cfgadm_usb(1M), libusb(3LIB), attributes(5), usba(7D), usb_ia(7D)
Writing Device Drivers
Universal Serial Bus Specification 2.0\(em2000
Interface Association Descriptor Engineering Change Notice (ECN)\(em2003
System Administration Guide: Basic Administration
http://www.sun.com/io
In addition to being logged, the following messages may appear on the system console. All messages are formatted in the following manner:
Warning: <device path> (usb_mid<instance number>): Error Message...Cannot access <device>. Please reconnect.
This device has been disconnected because a device other than the original one has been inserted. The driver informs you of this fact by displaying the name of the original device.
Same condition as described above; however in this case, the driver is unable to identify the original device with a name string.
A hotplug of the device is needed before it can be restored.
The following messages may be logged into the system log. They are formatted in the following manner:
<device path><usb_mid<instance number>): message...No driver found for interface <n> (nodename: <string>) of <device>.
No driver is available for this interface.
No driver is available for this interface.
No ugen interface is available and libusb(3LIB) cannot work with this device.