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NAME    [Toc]    [Back]

     pccardd -- PC-CARD (PCMCIA) management daemon

SYNOPSIS    [Toc]    [Back]

     pccardd [-d] [-v] [-x] [-z] [-i IRQ] [-I] [-f configfile]

DESCRIPTION    [Toc]    [Back]

     The pccardd utility is normally started at boot time, and manages the
     insertion and removal of PC-CARD cards.

     When started, pccardd will read the configuration file (default name
     /etc/defaults/pccard.conf which includes /etc/pccard.conf as the user
     configuration file) and scans the available PC-CARD slots for cards.  The
     pccardd utility then waits for card events, such as the insertion of a
     new card or the removal of a card.

     When a card is inserted, the following actions are taken:

     1.   The kernel driver detects the card insertion and applies power to
	  the card.

     2.   The pccardd utility reads the CIS data from the attribute memory of
	  the card, and uses the manufacturer name and card version to match
	  the card description in the configuration file.

     3.   Once matched, a driver is allocated.

     4.   Once a free driver and device instance is located, pccardd will (if
	  required) allocate resources such as an ISA memory block and
	  Input/Output ports from a common pool.

     5.   The PC-CARD slot is configured with the I/O and memory contexts
	  allocated, and the kernel driver is attached to this card.

     6.   If the attach succeeds, then specific shell commands may be executed
	  to configure the device, such as ifconfig(8) to set up a network
	  interface.  Separate commands may be specified for each card, driver
	  or device, and are executed in that order.

     When pccardd detects that a card has been removed, the following sequence

     1.   The shell commands associated with card removal are executed.  These
	  are intended to reset any device associated with the removed card.
	  Separate commands may exist for card, driver and device instances.

     2.   The PC-CARD slot resources are freed.

     Once a card/driver instance is configured, the resources bound to that
     instance are remembered, and if the card is removed and reinserted, the
     same driver is allocated.	The reasons are mostly historical.

     SIGHUP causes pccardd to reload the configuration files.

     The start options understood by pccardd are:

     -d      Do not run as a daemon, but run in the foreground and display
	     error messages.

     -v      After reading the configuration file, print out a summary of it.

     -x      Exits immediately after the cards have been probed and attached.
	     This is primarily useful in embedded applications where it is
	     desirable to use pccardd to start PC-CARD devices but prohibitive
	     memory-wise to leave the pccardd process running.

     -z      Delays running as a daemon until after the cards have been probed
	     and attached.

     -I      Don't get a list of free IRQs from kernel.

     -i IRQ  Configures an available IRQ.  It overrides the "irq" line in
	     /etc/defaults/pccard.conf and /etc/pccard.conf.

     -f configfile
	     Specifies a different configuration file to be used in placed of
	     the default file /etc/defaults/pccard.conf.  The file format is
	     detailed in pccard.conf(5), and lists the PC-CARD cards recognized
 by pccardd, and the kernel drivers and devices that are
	     used to interface to the card.

FILES    [Toc]    [Back]

     /etc/defaults/pccard.conf	default configuration file
     /etc/pccard.conf		user configuration file
     /var/run/pccardd.pid	process id of the currently running pccardd

SEE ALSO    [Toc]    [Back]

     pccard.conf(5), ifconfig(8)

AUTHORS    [Toc]    [Back]

     Developed by Andrew McRae <andrew@mega.com.au>.

BUGS    [Toc]    [Back]

     The pccardd utility can set up card parameters, but cannot guarantee that
     particular drivers can work with the card.

     Removing cards may cause problems if system resources have been associated
 with the card, such as network mounted file systems.

FreeBSD 5.2.1		       November 1, 1994 		 FreeBSD 5.2.1
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