lspci

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 everything 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 standard 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 [[[[<domain>]:]<bus>]:][<slot>][.[<func>]]: 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 hexadecimal. 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 [<vendor>]:[<device>]: Show only devices with specified vendor and device ID. Both ID's are given in hexadecimal and may be omitted or given as "*", both meaning "any value".
-i <file>: Use <file> as PCI ID database instead of /usr/share/hwdata/pci.ids.
-p <dir>: Use <dir> 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 supported) for easy parsing by scripts.
-M: Invoke bus mapping mode which performs a thorough scan of all PCI devices, including 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 control 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 <dir>: Force use of Linux /proc/bus/pci style configuration access, using <dir> instead of /proc/bus/pci. (Linux 2.1 or newer only)
-H1: Use direct hardware access via Intel configuration mechanism 1. (i386 and compatible 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 <file>: 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 hardware 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 kernels. Contains per-bus subdirectories with per-card config space files and a devices file containing a list of all PCI devices.

AUTHOR

The PCI Utilities are maintained by Martin Mares <mj@ucw.cz>.