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share/man/man4/xhci.4
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.Dd April 24, 2018 | .Dd April 24, 2018 | ||||
.Dt XHCI 4 | .Dt XHCI 4 | ||||
.Os | .Os | ||||
.Sh NAME | .Sh NAME | ||||
.Nm xhci | .Nm xhci | ||||
.Nd USB eXtensible Host Controller driver | .Nd USB eXtensible Host Controller driver | ||||
.Sh SYNOPSIS | .Sh SYNOPSIS | ||||
.Cd "device xhci" | .Cd "device xhci" | ||||
.Sl hw.usb.xhci.debug | |||||
.Sh DESCRIPTION | .Sh DESCRIPTION | ||||
The | The | ||||
.Nm | .Nm | ||||
driver provides support for the | driver provides support for the | ||||
.Tn USB | .Tn USB | ||||
eXtensible Host Controller Interface, | eXtensible Host Controller Interface, | ||||
which allows use of | which allows use of | ||||
.Tn USB | .Tn USB | ||||
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subclass 3 (USB) and programming interface 48 (XHCI). | subclass 3 (USB) and programming interface 48 (XHCI). | ||||
.Sh SYSCTL VARIABLES | .Sh SYSCTL VARIABLES | ||||
The following variables are available as both | The following variables are available as both | ||||
.Xr sysctl 8 | .Xr sysctl 8 | ||||
variables and | variables and | ||||
.Xr loader 8 | .Xr loader 8 | ||||
tunables: | tunables: | ||||
.Bl -tag -width indent | .Bl -tag -width indent | ||||
.It Va hw.usb.xhci.debug | .It Sl hw.usb.xhci.debug | ||||
Debug output level, where 0 is debugging disabled and larger values increase | Debug output level, where 0 is debugging disabled and larger values increase | ||||
debug message verbosity. | debug message verbosity. | ||||
Default is 0. | Default is 0. | ||||
.El | .El | ||||
.Sh SEE ALSO | .Sh SEE ALSO | ||||
.Xr ehci 4 , | .Xr ehci 4 , | ||||
.Xr ohci 4 , | .Xr ohci 4 , | ||||
.Xr uhci 4 , | .Xr uhci 4 , | ||||
.Xr usb 4 | .Xr usb 4 | ||||
.Sh HISTORY | .Sh HISTORY | ||||
The | The | ||||
.Nm | .Nm | ||||
device driver first appeared in | device driver first appeared in | ||||
.Fx 8.2 . | .Fx 8.2 . |