lspci(8)                  (31 May 2020)                  lspci(8)

          lspci - list all PCI devices

          lspci [options]

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

          By default, it shows a brief list of devices. Use the
          options described below to request either a more verbose
          output or output intended for parsing by other programs.

          If you are going to report bugs in PCI device drivers or in
          lspci itself, please include output of "lspci -vvx" or even
          better "lspci -vvxxx" (however, see below for possible

          Some parts of the output, especially in the highly verbose
          modes, are probably intelligible only to experienced PCI
          hackers. For exact definitions of the fields, please consult
          either the PCI specifications or the header.h and
          /usr/include/linux/pci.h include files.

          Access to some parts of the PCI configuration space is
          restricted to root on many operating systems, so the fea-
          tures of lspci available to normal users are limited. How-
          ever, lspci tries its best to display as much as available
          and mark all other information with <access denied> text.

        Basic display modes
          -m   Dump PCI device data in a backward-compatible machine
               readable form.  See below for details.

          -mm  Dump PCI device data in a machine readable form for
               easy parsing by scripts.  See below for details.

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

        Display options
          -v   Be verbose and display detailed information about all

          -vv  Be very verbose and display more details. This level
               includes everything deemed useful.

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          -vvv Be even more verbose and display everything we are able
               to parse, even if it doesn't look interesting at all
               (e.g., undefined memory regions).

          -k   Show kernel drivers handling each device and also ker-
               nel modules capable of handling it.  Turned on by
               default when -v is given in the normal mode of output.
               (Currently works only on Linux with kernel 2.6 or

          -x   Show hexadecimal dump of the standard part of the con-
               figuration space (the first 64 bytes or 128 bytes for
               CardBus bridges).

          -xxx Show hexadecimal dump of the whole PCI configuration
               space. It is available only to root as several PCI
               devices crash when you try to read some parts of the
               config space (this behavior probably doesn't violate
               the PCI standard, but it's at least very stupid). How-
               ever, such devices are rare, so you needn't worry much.

               Show hexadecimal dump of the extended (4096-byte) PCI
               configuration space available on PCI-X 2.0 and PCI
               Express buses.

          -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.

          -D   Always show PCI domain numbers. By default, lspci sup-
               presses them on machines which have only domain 0.

          -P   Identify PCI devices by path through each bridge,
               instead of by bus number.

          -PP  Identify PCI devices by path through each bridge, show-
               ing the bus number as well as the device number.

        Options to control resolving ID's to
          -n   Show PCI vendor and device codes as numbers instead of
               looking them up in the PCI ID list.

          -nn  Show PCI vendor and device codes as both numbers and

          -q   Use DNS to query the central PCI ID database if a
               device is not found in the local pci.ids file. If the
               DNS query succeeds, the result is cached in
               ~/.pciids-cache and it is recognized in subsequent runs
               even if -q is not given any more. Please use this

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               switch inside automated scripts only with caution to
               avoid overloading the database servers.

          -qq  Same as -q, but the local cache is reset.

          -Q   Query the central database even for entries which are
               recognized locally.  Use this if you suspect that the
               displayed entry is wrong.

        Options for selection of devices
          -s [[[[<domain>]:]<bus>]:][<device>][.[<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), device (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

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

        Other options
          -i <file>
               Use <file> as the PCI ID list instead of

          -p <file>
               Use <file> as the map of PCI ID's handled by kernel
               modules. By default, lspci uses
               /lib/modules/kernel_version/modules.pcimap.  Applies
               only to Linux systems with recent enough module tools.

          -M   Invoke bus mapping mode which performs a thorough scan
               of all PCI devices, including those behind misconfig-
               ured bridges, etc. This option gives meaningful results
               only with a direct hardware access mode, which usually
               requires root privileges.  Please note that the bus
               mapper only scans PCI domain 0.

               Shows lspci version. This option should be used stand-

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        PCI access options
          The PCI utilities use the PCI library to talk to PCI devices
          (see pcilib(7) for details). You can use the following
          options to influence its behavior:

          -A <method>
               The library supports a variety of methods to access the
               PCI hardware.  By default, it uses the first access
               method available, but you can use this option to over-
               ride this decision. See -A help for a list of available
               methods and their descriptions.

          -O <param>=<value>
               The behavior of the library is controlled by several
               named parameters.  This option allows one to set the
               value of any of the parameters. Use -O help for a list
               of known parameters and their default values.

          -H1  Use direct hardware access via Intel configuration
               mechanism 1.  (This is a shorthand for -A intel-conf1.)

          -H2  Use direct hardware access via Intel configuration
               mechanism 2.  (This is a shorthand for -A intel-conf2.)

          -F <file>
               Instead of accessing real hardware, read the list of
               devices and values of their configuration registers
               from the given file produced by an earlier run of lspci
               -x.  This is very useful for analysis of user-supplied
               bug reports, because you can display the hardware con-
               figuration in any way you want without disturbing the
               user with requests for more dumps.

          -G   Increase debug level of the library.

          If you intend to process the output of lspci automatically,
          please use one of the machine-readable output formats (-m,
          -vm, -vmm) described in this section. All other formats are
          likely to change between versions of lspci.

          All numbers are always printed in hexadecimal. If you want
          to process numeric ID's instead of names, please add the -n

        Simple format (-m)
          In the simple format, each device is described on a single
          line, which is formatted as parameters suitable for passing
          to a shell script, i.e., values separated by whitespaces,

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          quoted and escaped if necessary.  Some of the arguments are
          positional: slot, class, vendor name, device name, subsystem
          vendor name and subsystem name (the last two are empty if
          the device has no subsystem); the remaining arguments are

               Revision number.

               Programming interface.

          The relative order of positional arguments and options is
          undefined.  New options can be added in future versions, but
          they will always have a single argument not separated from
          the option by any spaces, so they can be easily ignored if
          not recognized.

        Verbose format (-vmm)
          The verbose output is a sequence of records separated by
          blank lines.  Each record describes a single device by a
          sequence of lines, each line containing a single `tag:
          value' pair. The tag and the value are separated by a single
          tab character.  Neither the records nor the lines within a
          record are in any particular order.  Tags are case-

          The following tags are defined:

          Slot The name of the slot where the device resides
               ([domain:]bus:device This tag is always the first in a

               Name of the class.

               Name of the vendor.

               Name of the device.

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               Name of the subsystem vendor (optional).

               Name of the subsystem (optional).

               The physical slot where the device resides (optional,
               Linux only).

          Rev  Revision number (optional).

               Programming interface (optional).

               Kernel driver currently handling the device (optional,
               Linux only).

               Kernel module reporting that it is capable of handling
               the device (optional, Linux only). Multiple lines with
               this tag can occur.

               NUMA node this device is connected to (optional, Linux

               IOMMU group that this device is part of (optional,
               Linux only).

          New tags can be added in future versions, so you should
          silently ignore any tags you don't recognize.

        Backward-compatible verbose format (-vm)
          In this mode, lspci tries to be perfectly compatible with
          its old versions.  It's almost the same as the regular ver-
          bose format, but the Device tag is used for both the slot
          and the device name, so it occurs twice in a single record.
          Please avoid using this format in any new code.

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               A list of all known PCI ID's (vendors, devices, classes
               and subclasses). Maintained at,
               use the update-pciids utility to download the most
               recent version.

               If lspci is compiled with support for compression, this
               file is tried before pci.ids.

               All ID's found in the DNS query mode are cached in this

          Sometimes, lspci is not able to decode the configuration
          registers completely.  This usually happens when not enough
          documentation was available to the authors.  In such cases,
          it at least prints the <?> mark to signal that there is
          potentially something more to say. If you know the details,
          patches will be of course welcome.

          Access to the extended configuration space is currently sup-
          ported only by the linux_sysfs back-end.

          setpci(8), pci.ids(5), update-pciids(8), pcilib(7)

          The PCI Utilities are maintained by Martin Mares

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