2 files changed, 69 insertions, 0 deletions

diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 8014fc3de0bf..d2737b65135a 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -131,6 +131,7 @@ MAN=	aac.4 \
 	psm.4 \
 	pt.4 \
 	pty.4 \
+	puc.4 \
 	random.4 \
 	rl.4 \
 	route.4 \
diff --git a/share/man/man4/puc.4 b/share/man/man4/puc.4
new file mode 100644
index 000000000000..15772b00385a
--- /dev/null
+++ b/share/man/man4/puc.4
@@ -0,0 +1,68 @@
+.\" Copyright (c) 2002 John Hay.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd February 7, 2002
+.Dt PUC 4
+.Os
+.Sh NAME
+.Nm puc
+.Nd PCI ``Universal'' Communications driver
+.Sh SYNOPSIS
+.Cd device pci
+.Cd device puc
+.Cd device sio
+.Cd options PUC_FASTINTR
+.Sh DESCRIPTION
+This driver acts as a shim to connect pci serial ports to the
+.Xr sio 4
+driver.
+.Pp
+The list of supported devices is in 
+.Em src/sys/dev/puc/pucdata.c.
+Support for new cards should be added there.
+.Pp
+If the PUC_FASTINTR option is used the driver will try to use fast interrupts.
+This should lower the interrupt latency and should be used if the
+.Xr sio 4
+driver reports
+.Em silo overflow
+errors.
+It cannot be used if the interrupt is shared.
+.Sh SEE ALSO
+.Xr sio 4
+.Sh HISTORY
+This driver took the idea from the
+.Nx
+.Xr puc 4
+driver and still use the same structure to describe cards to ease exchanging
+card info.
+.Sh BUGS
+Only serial ports are supported through the
+.Xr sio 4
+driver at the moment.
+Someone should write support for parallel ports using the
+.Xr lpt 4
+driver.