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pcimodules(8) Linux PCI Utilities pcimodules(8)
NAME
pcimodules - List kernel driver modules available for all currently plugged in PCI devices
SYNOPSIS
pcimodules [--classclass_id] [--classmaskmask] [--help]
DESCRIPTION
pcimodules lists all driver modules for all currently plugged in PCI devices. pcimodules
should be run at boot time, and whenever a PCI device is "hot plugged" into the system.
This can be done by the following Bourne shell syntax:
for module in $(pcimodules) ; do
modprobe -s -k "$module"
done
When a PCI device is removed from the system, the Linux kernel will decrement a usage
count on PCI driver module. If this count drops to zero (i.e., there are no PCI drivers),
then the modprobe -r process that is normally configured to run from cron every few min-
utes will eventually remove the unneeded module.
The --class and --classmask arguments can be used to limit the search to certain classes
of PCI devices. This is useful, for example, to generate a list of ethernet card drivers
to be loaded when the kernel has indicated that it is trying to resolve an unknown network
interface.
Modules are listed in the order in which the PCI devices are physically arranged so that
the computer owner can arrange things like having scsi device 0 be on a controller that is
not alphabetically the first scsi controller.
OPTIONS
--class class --classmask mask
--class and --classmask limit the search to PCI cards in particular classes. These argu-
ments are always used together. The arguments to --class and --classmask can be given as
hexadecimal numbers by prefixing a leading "0x". Note that the classes used by pcimodules
are in "Linux" format, meaning the class value that you see with lspci would be shifted
left eight bits, with the new low eight bits programming interface ID. An examples of how
to use class and classmask is provided below. --help, -h Print a help message and exit.
EXAMPLES
pcimodules
lists all modules corresponding to currently plugged in PCI devices.
pcimodules --class 0x20000 --classmask 0xffff00
lists all modules corresponding to currently plugged in ethernet PCI devices.
FILES
/lib/modules/<kernel-version>/modules.pcimap
This file is automatically generated by depmod, and used by pcimodules to determine
which modules correspond to which PCI ID's.
/proc/bus/pci
An interface to PCI bus configuration space provided by the post-2.1.82 Linux ker-
nels. Contains per-bus subdirectories with per-card config space files and a
devices file containing a list of all PCI devices.
SEE ALSO
lspci(8)
MAINTAINER
The Linux PCI Utilities are maintained by Martin Mares <mj AT suse.cz>.
AUTHOR
pcimodules was written by Adam J. Richter <adam AT yggdrasil.com>, based on public domain
example code by Martin Mares <mj AT suse.cz>.
COPYRIGHT
pcimodules is copyright 2000, Yggdrasil Computing, Incorporated, and may be copied under
the terms and conditions of version 2 of the GNU General Public License as published by
the Free Software Foundation (Cambridge, Massachusetts, United States of America).
pciutils-3.0.0 10 April 2008 pcimodules(8)
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