Ooops. Forgot the man page for pbio.4 in my port from RELENG_4.

2 files changed, 182 insertions, 0 deletions

diff --git a/share/man/man4/man4.i386/Makefile b/share/man/man4/man4.i386/Makefile
index 7513a8a..56402e0 100644
--- a/share/man/man4/man4.i386/Makefile
+++ b/share/man/man4/man4.i386/Makefile
@@ -30,6 +30,7 @@ MAN=	acpi_asus.4 \
 	ndis.4 \
 	npx.4 \
 	pae.4 \
+	pbio.4 \
 	pcf.4 \
 	perfmon.4 \
 	pnp.4 \
diff --git a/share/man/man4/man4.i386/pbio.4 b/share/man/man4/man4.i386/pbio.4
new file mode 100644
index 0000000..39a0b83
--- /dev/null
+++ b/share/man/man4/man4.i386/pbio.4
@@ -0,0 +1,181 @@
+.\"  Copyright (c) 2000-2002
+.\"          Diomidis D. Spinellis, Athens, Greece
+.\"      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 as
+.\"     the first lines of this file unmodified.
+.\"  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 Diomidis D. Spinellis ``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 Diomidis D. Spinellis 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 19, 2003
+.Dt PBIO 4 i386
+.Os
+.Sh NAME
+.Nm pbio
+.Nd 8255 parallel peripheral interface basic
+.Tn I/O
+driver
+.Sh SYNOPSIS
+.Cd "device pbio0 at isa? port 0x360"
+.In machine/pbioio.h
+.Sh DESCRIPTION
+The
+.Xr pbio 4
+driver supports direct access to the Intel 8255A programmable
+peripheral interface (PPI) chip running in mode 0 (simple
+.Tn I/O ) .
+Such an interface provides 24 digital
+.Tn I/O
+lines.
+The driver is designed for performing
+.Tn I/O
+under program control using
+peripherals such as the
+.Tn Advantech
+.Tn PCL-724
+card, which emulates the Intel 8255A PPI in mode 0.
+Other 8255A-based peripherals such as the
+.Tn BMC
+Messsysteme
+.Tn PIO24II
+card have also been reported to work.
+.Pp
+The PPI provides two 8-bit ports (port A and port B) and
+two 4-bit ports (port C upper, port C lower).
+Each port can be individually programmed for input and
+(latched) output,
+and appears at a different offset of the device's base
+.Tn I/O
+address.
+.Pp
+A separate register allows the configuration of ports for input
+or output.
+The device is so simple, that reliably probing for it when
+input data arrives at its terminals is impossible;
+therefore the kernel configuration has to specify the
+device's base address.
+The device driver provides four character devices that
+correspond to the peripheral's
+.Tn I/O
+ports.
+Opening a device for read or write, automatically configures
+the corresponding hardware port for input or output.
+At boot time all ports are set configured for input to avoid damaging
+external circuitry.
+.Pp
+A set of
+.Xr ioctl 2
+requests allow polled input and paced output to be
+efficiently performed at the driver level without expensive
+user/kernel context switching.
+The driver can perform
+.Tn I/O
+in three different ways:
+.Bl -tag -width Differential
+.It Basic
+The read or write operation returns immediately after reading
+or writing the data to the port at bus speed.
+.It Paced
+Data is transferred from or to the port at intervals specified
+by a separate
+.Xr ioctl 2
+call.
+.It Differential
+(Input only.)
+Only port values that differ from the previous port value are returned.
+.El
+.Pp
+The pacing interval is specified in
+.Em Hz
+unit increments.
+Setting a pace of
+.Sy n
+seconds
+will result in no more than one value being read or written every
+.Sy n
+seconds.
+Single byte read/write opeations will take at least
+.Sy n
+seconds to complete.
+.Pp
+The following
+.Xr ioctl 2
+calls are supported:
+.Bl -tag -width "PBIO_SETIPACE"
+.It Dv PBIO_SETDIFF
+accepts a pointer to an integer as the third argument,
+and sets the driver for differential input if the integer is non-zero.
+The input pace speed determines the periodic interval the driver will use to
+examine the port for a changed value.
+.It Dv PBIO_GETDIFF
+accepts a pointer to an integer as the third argument,
+and sets the integer to the last set value for differential input.
+.It Dv PBIO_SETIPACE
+accepts a pointer to an integer as the third argument,
+and sets the driver's input pacing speed to the value of that integer.
+.It Dv PBIO_GETIPACE
+accepts a pointer to an integer as the third argument,
+and sets the integer to the last set value for the input pace.
+.It Dv PBIO_SETOPACE
+accepts a pointer to an integer as the third argument,
+and sets the driver's output pacing speed to the value of that integer.
+.It Dv PBIO_GETOPACE
+accepts a pointer to an integer as the third argument,
+and sets the integer to the last set value for the output pace.
+.El
+.Sh FILES
+.Bl -tag -width "/dev/pbioxxx"
+.It Pa /dev/pbio0a
+Port A (8 bit
+.Tn I/O ) .
+.It Pa /dev/pbio0b
+Port B (8 bit
+.Tn I/O ) .
+.It Pa /dev/pbio0ch
+Port C upper (4 bit
+.Tn I/O ) .
+.It Pa /dev/pbio0cl
+Port C lower (4 bit
+.Tn I/O ) .
+.El
+.Sh SEE ALSO
+.Rs
+.%A "Diomidis Spinellis"
+.%T "The information furnace: Consolidated home control"
+.%D "2003"
+.%J "Personal and Ubiquitous Computing"
+.%N 1
+.%V 7
+.%P "53-69"
+.Re
+.Sh HISTORY
+The
+.Nm
+device was first used under
+.Fx 4.1 .
+.Sh AUTHOR
+.An "Diomidis D. Spinellis" Aq dds@aueb.gr
+.Sh BUGS
+One of the
+.Tn PCL-724
+card's inputs can optionally be wired to generate an interrupt.
+This feature is not supported.