NAME¶

uhci — UHCI USB Host Controller driver

SYNOPSIS¶

device uhci

DESCRIPTION¶

The uhci driver provides support for UHCI-type PCI based USB controllers.

HARDWARE¶

The uhci driver supports all UHCI v1.1 compliant controllers including:

• Intel 82371AB/EB (PIIX4)
• Intel 82371SB (PIIX3)
• VIA 83C572

SYSCTL VARIABLES¶

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

hw.usb.uhci.debug

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

SEE ALSO¶

ehci(4), ohci(4), xhci(4)

HISTORY¶

The uhci device driver first appeared in FreeBSD 3.0.

AUTHORS¶

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