OHCI(4) BSD Kernel Interfaces Manual OHCI(4)NAME
ohci -- OHCI USB Host Controller driver
The ohci driver provides support for OHCI-type PCI based USB controllers.
The ohci driver supports all OHCI v1.0 compliant controllers including:
o AcerLabs M5237 (Aladdin-V)
o OPTi 82C861 (FireLink)
o NEC uPD 9210
o CMD Tech 670 (USB0670)
o CMD Tech 673 (USB0673)
o NVIDIA nForce3
o Sun PCIO-2 (RIO USB)
SEE ALSO ehci(4), uhci(4)HISTORY
The ohci device driver first appeared in FreeBSD 3.0.
The ohci driver was written by Lennart Augustsson <firstname.lastname@example.org> for the NetBSD project.
BSD June 23, 2005 BSD
Check Out this Related Man Page
ohci(7D) Devices ohci(7D)NAME
ohci - OpenHCI host controller driver
The ohci driver is a USBA (Solaris USB Architecture) compliant nexus driver that supports the Open Host Controller Interface Specification
1.1, an industry standard developed by Compaq, Microsoft, and National Semiconductor.
The ohci driver supports bulk, interrupt, control and isochronous transfers.
32-bit x86 ELF kernel module
64-bit x86 ELF kernel module
64-bit SPARC ELF kernel module
driver configuration file
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|Architecture |SPARC, x86, PCI-based systems |
|Availability |SUNWusb |
SEE ALSO attributes(5), ehci(7D), hubd(7D), uhci(7D), usba(7D)
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...
Unrecoverable USB Hardware Error.
There was an unrecoverable USB hardware error reported by the OHCI Controller. Please reboot the system. If this problem persists, con-
tact your system vendor.
No SOF interrupts have been received. This OHCI USB controller is unusable.
The USB hardware is not generating Start Of Frame interrupts. Please reboot the system. If this problem persists, contact your system
SunOS 5.10 11 Oct 2004 ohci(7D)
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