Ubuntu Manpages

ohci

OHCI USB Host Controller driver

device ohci

The ohci driver provides support for OHCI-type PCI based USB controllers.

The ohci driver supports all OHCI v1.0 compliant controllers including:

  • AcerLabs M5237 (Aladdin-V)
  • AMD-756
  • OPTi 82C861 (FireLink)
  • NEC uPD 9210
  • CMD Tech 670 (USB0670)
  • CMD Tech 673 (USB0673)
  • NVIDIA nForce3
  • Sun PCIO-2 (RIO USB)

The following variables are available as both sysctl(8) variables and loader(8) tunables:

hw.usb.ohci.debug
Debug output level, where 0 is debugging disabled and larger values increase debug message verbosity. Default is 0.

ehci(4), uhci(4), xhci(4)

The ohci device driver first appeared in FreeBSD 3.0.

The ohci driver was written by Lennart Augustsson <augustss@carlstedt.se> for the NetBSD project.