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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	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	 /usr/local/share/pci-

       -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 to set the value of	any of the pa-
	      rameters.	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).

	      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 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-3.7.0			  31 May 2020			      lspci(8)


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