pcimodules Man page

pcimodules(8) Linux PCI Utilities pcimodules(8)


pcimodules – List kernel driver modules available for all currently
plugged in PCI devices


pcimodules [–classclass_id] [–classmaskmask] [–help]


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 fol‐
lowing Bourne shell syntax:

for module in $(pcimodules) ; do

modprobe -s “$module”


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 minutes 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 inter‐

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


–class class –classmask mask

–class and –classmask limit the search to PCI cards in particular
classes. These arguments are always used together. The arguments to
–class and –classmask can be given as hexadecimal numbers by prefix‐
ing 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 pro‐
vided below. –help, -h Print a help message and exit.

lists all modules corresponding to currently plugged in PCI

pcimodules –class 0x20000 –classmask 0xffff00
lists all modules corresponding to currently plugged in ethernet
PCI devices.

This file is automatically generated by depmod, and used by pci‐
modules to determine which modules correspond to which PCI ID’s.

An interface to PCI bus configuration space provided by the
post-2.1.82 Linux kernels. Contains per-bus subdirectories with
per-card config space files and a devices file containing a list
of all PCI devices.



The Linux PCI Utilities are maintained by Martin Mares .


pcimodules was written by Adam J. Richter , based
on public domain example code by Martin Mares .


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-3.3.1 09 April 2015 pcimodules(8)

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