Provided by: pciutils_3.6.4-1ubuntu0.20.04.1_amd64 bug

NAME

       lspci - list all PCI devices

SYNOPSIS

       lspci [options]

DESCRIPTION

       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.

OPTIONS

   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.

       -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
              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>]:][<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" selects 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/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.

       --version
              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 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 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.

MACHINE READABLE OUTPUT

       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.

       -pprogif
              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.

       SVendor
              Name of the subsystem vendor (optional).

       SDevice
              Name of the subsystem (optional).

       PhySlot
              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). Multiple
              lines with this tag can occur.

       NUMANode
              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 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.

FILES

       /usr/share/misc/pci.ids
              A list  of  all  known  PCI  ID's  (vendors,  devices,  classes  and  subclasses).  Maintained  at
              https://pci-ids.ucw.cz/, use the update-pciids utility to download the most recent version.

       /usr/share/misc/pci.ids.gz
              If lspci is compiled with support for compression, this file is tried before pci.ids.

       ~/.pciids-cache
              All ID's found in the DNS query mode are cached in this file.

BUGS

       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.

SEE ALSO

       setpci(8), pci.ids(5), update-pciids(8), pcilib(7)

AUTHOR

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