The ohci driver is a USBA (Solaris USB Architecture) compliant nexus driver that supports the Open Host Controller Interface Specification 1.0a, an industry standard developed by Compaq, Microsoft, and National Semiconductor.
The ohci driver supports bulk, interrupt, control and isochronous transfers.
32 bit ELF kernel module for original USBA framework*
64 bit ELF kernel module for original USBA framework*
32 bit ELF kernel module for USBA 1.0 framework*
64 bit ELF kernel module for USBA 1.0 framework*
* Please see www.sun.com/desktop/whitepapers.html for more information regarding USB dual framework implementation, USBA 1.0, and USB 2.0.
See attributes(5) for descriptions of the following attributes:
|ATTRIBUTE TYPE||ATTRIBUTE VALUE|
|Architecture||Original USBA drivers and files: PCI-based systems|
|USBA 1.0 drivers and files: PCI-based SPARC systems|
Writing Device Drivers
Universal Serial Bus Specification 2.0
Open Host Controller Interface Specification for USB 1.0a
System Administration Guide: Basic Administration
All host controller errors are passed to the client drivers. Root hub errors are documented in hubd(7D).
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> (ohci<instance number>): Error message...
WARNING: <device path> (usba10_ohci<instance number>): Error message...
There was an unrecoverable USB hardware error reported by the OHCI Controller. Please reboot the system. If this problem persists, contact your system vendor.
The USB hardware is not generating Start Of Frame interrupts. Please reboot the system. If this problem persists, contact your system vendor.