lspci(8) - Online Manual Page Of Unix/Linux

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lspci(8) The PCI Utilities lspci(8)

NAME
lspci - list all PCI devices

SYNOPSIS
lspci [options]

DESCRIPTION
lspci is a utility for displaying information about all PCI buses in the system and all
devices connected to them.

If you are going to report bugs in PCI device drivers or in lspci itself, please include
output of "lspci -vvx".

OPTIONS
-v Tells lspci to be verbose and display detailed information about all devices.

-vv Tells lspci to be very verbose and display even more information (actually every-
thing the PCI device is able to tell). The exact meaning of these data is not
explained in this manual page, if you want to know more, consult
/usr/include/linux/pci.h or the PCI specs.

-n Show PCI vendor and device codes as numbers instead of looking them up in the PCI
ID database.

-x Show hexadecimal dump of first 64 bytes of the PCI configuration space (the stan-
dard header). Useful for debugging of drivers and lspci itself.

-xxx Show hexadecimal dump of whole PCI configuration space. Available only for root as
several PCI devices crash when you try to read undefined portions of the config
space (this behavior probably doesn't violate the PCI standard, but it's at least
very stupid).

-xxxx Show hexadecimal dump of the extended PCI configuration space.

-b Bus-centric view. Show all IRQ numbers and addresses as seen by the cards on the
PCI bus instead of as seen by the kernel.

-t Show a tree-like diagram containing all buses, bridges, devices and connections
between them.

-s [[[[]:]]:][][.[]]
Show only devices in the specified domain (in case your machine has several host
bridges, they can either share a common bus number space or each of them can
address a PCI domain of its own; domains are numbered from 0 to ffff), bus (0 to
ff), slot (0 to 1f) and function (0 to 7). Each component of the device address
can be omitted or set to "*", both meaning "any value". All numbers are hexadeci-
mal. E.g., "0:" means all devices on bus 0, "0" means all functions of device 0 on
any bus, "0.3" selects third function of device 0 on all buses and ".4" shows only
the fourth function of each device.

-d []:[]
Show only devices with specified vendor and device ID. Both ID's are given in hex-
adecimal and may be omitted or given as "*", both meaning "any value".

-i
Use as PCI ID database instead of /usr/share/hwdata/pci.ids.

-p
Use as directory containing PCI bus information instead of /proc/bus/pci.

-m Dump PCI device data in machine readable form (both normal and verbose format sup-
ported) for easy parsing by scripts.

-M Invoke bus mapping mode which performs a thorough scan of all PCI devices, includ-
ing those behind misconfigured bridges etc. This option is available only to root
and it gives meaningful results only if combined with direct hardware access mode
(otherwise the results are identical to normal listing modes, modulo bugs in
lspci). Please note that the bus mapper doesn't support PCI domains and scans only
domain 0.

--version
Shows lspci version. This option should be used stand-alone.

PCILIB OPTIONS
The PCI utilities use PCILIB (a portable library providing platform-independent functions
for PCI configuration space access) to talk to the PCI cards. The following options con-
trol parameters of the library, especially what access method it uses. By default, PCILIB
uses the first available access method and displays no debugging messages. Each switch is
accompanied by a list of hardware/software configurations it's supported in.

-P
Force use of Linux /proc/bus/pci style configuration access, using instead of
/proc/bus/pci. (Linux 2.1 or newer only)

-H1 Use direct hardware access via Intel configuration mechanism 1. (i386 and compati-
ble only)

-H2 Use direct hardware access via Intel configuration mechanism 2. Warning: This
method is able to address only first 16 devices on any bus and it seems to be very
unreliable in many cases. (i386 and compatible only)

-F
Extract all information from given file containing output of lspci -x. This is very
useful for analysis of user-supplied bug reports, because you can display the hard-
ware configuration in any way you want without disturbing the user with requests
for more dumps. (All systems)

-G Increase debug level of the library. (All systems)

FILES
/usr/share/hwdata/pci.ids
A list of all known PCI ID's (vendors, devices, classes and subclasses).

/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.