NAME¶
uhci —
UHCI USB Host Controller driver
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.
HISTORY¶
The uhci device driver first appeared in
FreeBSD 3.0.
