'\" te
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.TH UHCI 4D "May 13, 2017"
.SH NAME
uhci \- host controller driver
.SH SYNOPSIS
.LP
.nf
\fBpcivid,pid@unit-address\fR
.fi

.SH DESCRIPTION
.LP
The \fBuhci\fR host controller driver is a \fBUSBA \fR (Solaris USB
Architecture) compliant nexus driver that supports the \fIUniversal Host
Controller Interface Specification 1.1\fR, an industry standard developed by
Intel. The \fBuhci\fR driver supports all USB transfers, including interrupt,
control, isochronous and bulk.
.SH FILES
.ne 2
.na
\fB\fB/kernel/drv/uhci\fR\fR
.ad
.RS 28n
32-bit ELF kernel module. (SPARC or x86).
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/amd64/uhci\fR\fR
.ad
.RS 28n
64-bit ELF kernel module. (x86).
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/sparcv9/uhci\fR\fR
.ad
.RS 28n
64-bit SPARC ELF kernel module.
.RE

.sp
.ne 2
.na
\fB\fB/kernel/drv/uhci.conf\fR\fR
.ad
.RS 28n
Driver configuration file.
.RE

.SH ATTRIBUTES
.LP
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
l | l
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Architecture	SPARC or  x86  PCI-based systems
.TE

.SH SEE ALSO
.LP
.BR ehci (4D),
.BR hubd (4D),
.BR ohci (4D),
.BR usba (4D),
.BR attributes (7)
.sp
.LP
\fIWriting Device Drivers\fR
.sp
.LP
\fIUniversal Host Controller Interface Specification for USB 1.1\fR
.sp
.LP
\fIUniversal Serial Bus Specification 2.0\fR
.sp
.LP
\fISystem Administration Guide: Basic Administration\fR
.SH DIAGNOSTICS
.LP
All host controller errors are passed to the client drivers. Root errors are
documented in \fBhubd\fR(4D).
.sp
.LP
In addition to being logged, the following messages may appear on the system
console. All messages are formatted in the following manner:
.sp
.in +2
.nf
WARNING: <device path> <uhci><instance number>>: Error message...
.fi
.in -2
.sp

.sp
.ne 2
.na
\fBNo SOF interrupts have been received. This USB UHCI host controller is
unusable.\fR
.ad
.sp .6
.RS 4n
The USB hardware is not generating Start Of Frame interrupts. Please reboot the
system. If this problem persists, contact your system vendor.
.RE