pcilib(7)							 The PCI Utilities							 pcilib(7)

NAME

       pcilib - a library for accessing PCI devices

DESCRIPTION

       The PCI library (also known as pcilib and libpci) is a portable library for accessing PCI devices and their configuration space.

ACCESS METHODS

       The  library supports a variety of methods to access the configuration space on different operating systems. By default, the first matching
       method in this list is used, but you can specify override the decision (see the -A switch of lspci).

       linux-sysfs
	      The /sys filesystem on Linux 2.6 and newer. The standard header of the config space is available to all  users,  the  rest  only	to
	      root.  Supports  extended  configuration	space,	PCI domains, VPD (from Linux 2.6.26), physical slots (also since Linux 2.6.26) and
	      information on attached kernel drivers.

       linux-proc
	      The /proc/bus/pci interface supported by Linux 2.1 and newer. The standard header of the config space is available to all users, the
	      rest only to root.

       intel-conf1
	      Direct  hardware access via Intel configuration mechanism 1. Available on i386 and compatibles on Linux, Solaris/x86, GNU Hurd, Win-
	      dows, BeOS and Haiku. Requires root privileges.

       intel-conf2
	      Direct hardware access via Intel configuration mechanism 2. Available on i386 and compatibles on Linux, Solaris/x86, GNU Hurd,  Win-
	      dows,  BeOS and Haiku. Requires root privileges. Warning: This method is able to address only the first 16 devices on any bus and it
	      seems to be very unreliable in many cases.

       fbsd-device
	      The /dev/pci device on FreeBSD. Requires root privileges.

       aix-device
	      Access method used on AIX. Requires root privileges.

       nbsd-libpci
	      The /dev/pci0 device on NetBSD accessed using the local libpci library.

       obsd-device
	      The /dev/pci device on OpenBSD. Requires root privileges.

       dump   Read the contents of configuration registers from a file specified in the dump.name parameter. The format corresponds to the  output
	      of lspci -x.

       darwin Access method used on Mac OS X / Darwin. Must be run as root and the system must have been booted with debug=0x144.

PARAMETERS

       The library is controlled by several parameters. They should have sensible default values, but in case you want to do something unusual (or
       even something weird), you can override them (see the -O switch of lspci).

   Parameters of specific access methods
       dump.name
	      Name of the bus dump file to read from.

       fbsd.path
	      Path to the FreeBSD PCI device.

       nbsd.path
	      Path to the NetBSD PCI device.

       obsd.path
	      Path to the OpenBSD PCI device.

       proc.path
	      Path to the procfs bus tree.

       sysfs.path
	      Path to the sysfs device tree.

   Parameters for resolving of ID's via DNS
       net.domain
	      DNS domain containing the ID database.

       net.cache_name
	      Name of the file used for caching of resolved ID's.

   Parameters for resolving of ID's via UDEV's HWDB
       hwdb.disable
	      Disable use of HWDB if set to a non-zero value.

SEE ALSO

       lspci(8), setpci(8), update-pciids(8)

AUTHOR

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

pciutils-3.5.2							  03 October 2016							 pcilib(7)