lspci manpage

Search topic Section

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 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.

   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>]:][<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".

   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
	      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 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:device.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
	      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 ver-
       sions.  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

	      A list of all known PCI ID's (vendors, devices, classes and sub-
	      classes). Maintained at http://pciids.sourceforge.net/, 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), update-pciids(8), pcilib(7)

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

pciutils-3.1.10			 25 June 2012			      lspci(8)