'\" te
.\" Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
.TH uhci 7D "5 Jan 2012" "SunOS 5.11" "Devices"
.SH NAME
uhci \- host controller driver
.SH SYNOPSIS
.LP
.nf
\fBpcivid,pid@unit-address\fR
.fi

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

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

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

.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
lw(2.75i) |lw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
ArchitectureSPARC or  x86  PCI-based systems
_
Availabilitysystem/io/usb
.TE

.SH SEE ALSO
.sp
.LP
\fBattributes\fR(5), \fBehci\fR(7D), \fBhubd\fR(7D), \fBohci\fR(7D), \fBusba\fR(7D)
.sp
.LP
\fIWriting Device Drivers for Oracle Solaris 11.2\fR 
.sp
.LP
\fIUniversal Host Controller Interface Specification for USB 1.1\fR
.sp
.LP
\fIUniversal Serial Bus Specification 2.0\fR
.sp
.LP
\fIIntroduction to Oracle Solaris 11.3                 Administration\fR
.sp
.LP
 (http://www.oracle.com)
.SH DIAGNOSTICS
.sp
.LP
All host controller errors are passed to the client drivers. Root errors are documented in \fBhubd\fR(7D).
.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
.mk
.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