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  it-
       self,  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 defi-
       nitions 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>

   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.,  unde-
              fined memory regions).

       -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 proba-
              bly doesn't violate the PCI standard, but  it's  at  least  very
              stupid).  However,  such  devices are rare, so you needn't worry

       -xxxx  Show hexadecimal dump of the extended (4096-byte) PCI configura-
              tion 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 sub-
              sequent  runs  even if -q is not given any more. Please use this
              switch inside automated scripts only with caution to avoid over-
              loading 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" se-
              lects  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  avail-
              able, 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  pa-
              rameters.  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 pro-
              duced  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 disturb-
              ing 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 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-

       -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 sepa-
       rated 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:de-
              vice.function).  This tag is always the first in a record.

       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

       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  de-
              vice  (optional,  Linux  only). Multiple lines with this tag can

              NUMA node this device is connected to (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 ver-
       sions.  It's almost the same as the regular verbose format, but the De-
       vice  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

              A list of all known PCI ID's (vendors, devices, classes and sub-
              classes). 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 com-
       pletely.  This usually happens when not enough documentation was avail-
       able 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-3.6.4                  25 January 2020                       lspci(8)
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