181 lines
5.4 KiB
Groff
181 lines
5.4 KiB
Groff
.\"
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.\" Copyright (c) 1994 Andrew McRae. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd November 1, 1994
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.Dt PCCARDD 8
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.Os FreeBSD
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.Sh NAME
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.Nm pccardd
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.Nd PC-CARD (PCMCIA) management daemon
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.Sh SYNOPSIS
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.Nm
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.Op Fl d
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.Op Fl v
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.Op Fl z
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.Op Fl i Ar IRQ
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.Op Fl I
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.Op Fl f Ar configfile
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.Sh DESCRIPTION
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.Nm Pccardd
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is normally started at boot time, and manages the insertion
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and removal of PC-CARD cards.
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.Pp
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When started,
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.Nm
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will read the configuration file (default name
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.Pa /etc/defaults/pccard.conf
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which includes
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.Pa /etc/pccard.conf
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as the user configuration file)
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and scans the available PC-CARD slots for cards.
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.Nm Pccardd
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then waits for
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.Em "card events" ,
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such as the insertion of a new card or the removal
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of a card.
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.Pp
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When a card is inserted, the following
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actions are taken:
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.Bl -enum
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.It
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The kernel driver detects the card insertion and applies
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power to the card.
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.It
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.Nm Pccardd
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reads the
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.Em CIS
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data from the attribute memory of the card, and uses
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the manufacturer name and card version to match
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the card description in the configuration file.
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.It
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Once matched, a driver is allocated.
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.It
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Once a free driver and device instance is located,
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.Nm
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will (if required) allocate resources such as an ISA memory
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block and Input/Output ports from a common pool.
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.It
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The PC-CARD slot is configured with the I/O and memory
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contexts allocated, and the kernel driver is attached to
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this card.
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.It
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If the attach succeeds, then specific shell commands
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may be executed to configure the device, such as
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.Xr ifconfig 8
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to set up a network interface.
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Separate commands may be specified
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for each card, driver or device, and are executed in that order.
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.El
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.Pp
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When
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.Nm
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detects that a card has been removed, the following sequence occurs:
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.Bl -enum
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.It
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The shell commands associated with card removal are executed.
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These
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are intended to reset any device associated with the removed card.
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Separate commands may exist for card, driver and device instances.
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.It
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The PC-CARD slot resources are freed.
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.El
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.Pp
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Once a card/driver instance is configured, the resources
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bound to that instance are remembered, and if the card is removed
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and reinserted, the same driver is allocated.
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The primary reason
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is that once a driver is associated with a card, the
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driver's
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.Fn probe
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routine has been called, and this usually causes driver specific
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data areas to be initialized with the I/O ports or memory resources
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allocated to the card.
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Most drivers are not designed to be
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disassociated from the hardware and then reassociated with different
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parameters.
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This will change significantly when loadable kernel
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modules are supported.
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.Pp
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SIGHUP causes
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.Nm
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to reload the configuration files.
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.Pp
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The start options understood by
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.Nm
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are:
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.Bl -tag -width Ds
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.It Fl d
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Do not run as a daemon, but run in the foreground and
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display error messages.
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.It Fl v
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After reading the configuration file, print out a summary
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of it.
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.It Fl z
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Delays running as a daemon until after the cards have been probed and attached.
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.It Fl I
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Don't get a list of free IRQs from kernel.
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.It Fl i Ar IRQ
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Configures an available IRQ. It overrides the "irq" line in
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.Pa /etc/defaults/pccard.conf
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and
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.Pa /etc/pccard.conf .
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.It Fl f Ar configfile
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Specifies a different configuration file to be used
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in placed of the default file
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.Pa /etc/defaults/pccard.conf .
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The file format is detailed in
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.Xr pccard.conf 5 ,
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and lists the PC-CARD cards recognized by
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.Nm ,
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and the kernel drivers and devices that are used to
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interface to the card.
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.El
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.Sh FILES
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.Bl -tag -width /etc/defaults/pccard.conf -compact
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.It Pa /etc/defaults/pccard.conf
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default configuration file
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.It Pa /etc/pccard.conf
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user configuration file
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.It Pa /var/run/pccardd.pid
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process id of the currently running
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.Nm
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.El
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.Sh SEE ALSO
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.Xr pccard.conf 5 ,
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.Xr ifconfig 8
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.Sh AUTHORS
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Developed by
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.An Andrew McRae Aq andrew@mega.com.au .
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.Sh BUGS
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.Nm Pccardd
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can set up card parameters, but cannot guarantee that
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particular drivers can work with the card.
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.Pp
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Removing cards may cause problems if system resources
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have been associated with the card, such as network
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mounted filesystems.
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