lspci(8)                        The PCI Utilities                       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 caveats).

       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 features of lspci available to normal
       users are limited. However, 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 devices.

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

       -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

       -k     Show kernel drivers handling each device and also kernel 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 newer.)

       -x     Show hexadecimal dump of the standard part of the configuration
              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).
              However, such devices are rare, so you needn't worry much.

       -xxxx  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 suppresses 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, showing the bus
              number as well as the device number.

   Options to control resolving ID's to names
       -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 names.

       -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
              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

   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 device.

       -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 misconfigured 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-alone.

   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 override 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 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 configuration 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

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

   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, 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 option-like:

       -rrev  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-sensitive.

       The following tags are defined:

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

       Class  Name of the class.

       Vendor Name of the vendor.

       Device Name of the device.

              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).

       ProgIf Programming interface (optional).

       Driver Kernel driver currently handling the device (optional, Linux

       Module 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 only).

              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 verbose 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.

              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 file.

       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 supported 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 <>.

pciutils-3.7.0                     31 May 2020                          lspci(8)