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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 pro-

       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  connec-
              tions 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 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 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.

   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 wrong.

   Options for selection of devices
       -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

       -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".

   Other options
       -i <file>
              Use <file> as the PCI ID list instead of /usr/share/hwdata/pci.ids.

       -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  mean-
              ingful  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  meth-
              ods 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 with-
              out 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 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  posi-
       tional:  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  argu-
       ments 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 rec-

   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.func-
              tion).  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 only).

       Rev    Revision number (optional).

       ProgIf Programming interface (optional).

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

       Module Kernel module reporting that it is capable of handling the device (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

              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), update-pciids(8), pcilib(7)

       The PCI Utilities are maintained by Martin Mares <mj AT>.

pciutils-3.1.10                  25 June 2012                         lspci(8)

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