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 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

   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 /usr/share/misc/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 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 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-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 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 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), update-pciids(8), pcilib(7)


       The PCI Utilities are maintained by Martin Mares <>.

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