1pcilib(7) The PCI Utilities pcilib(7)
2
6 pcilib - a library for accessing PCI devices
7
10 The PCI library (also known as pcilib and libpci) is a portable library
11 for accessing PCI devices and their configuration space.
12
15 The library supports a variety of methods to access the configuration
16 space on different operating systems. By default, the first matching
17 method in this list is used, but you can specify override the decision
18 (see the -A switch of lspci).
19 linux-sysfs
22 The /sys filesystem on Linux 2.6 and newer. The standard header
23 of the config space is available to all users, the rest only to
24 root. Supports extended configuration space, PCI domains, VPD
25 (from Linux 2.6.26), physical slots (also since Linux 2.6.26)
26 and information on attached kernel drivers.
27 linux-proc
29 The /proc/bus/pci interface supported by Linux 2.1 and newer.
30 The standard header of the config space is available to all
31 users, the rest only to root.
32 intel-conf1
34 Direct hardware access via Intel configuration mechanism 1.
35 Available on i386 and compatibles on Linux, Solaris/x86, GNU
36 Hurd, Windows, BeOS and Haiku. Requires root privileges.
37 intel-conf2
39 Direct hardware access via Intel configuration mechanism 2.
40 Available on i386 and compatibles on Linux, Solaris/x86, GNU
41 Hurd, Windows, BeOS and Haiku. Requires root privileges. Warn‐
42 ing: This method is able to address only the first 16 devices on
43 any bus and it seems to be very unreliable in many cases.
44 fbsd-device
46 The /dev/pci device on FreeBSD. Requires root privileges.
47 aix-device
49 Access method used on AIX. Requires root privileges.
50 nbsd-libpci
52 The /dev/pci0 device on NetBSD accessed using the local libpci
53 library.
54 obsd-device
56 The /dev/pci device on OpenBSD. Requires root privileges.
57 dump Read the contents of configuration registers from a file speci‐
59 fied in the dump.name parameter. The format corresponds to the
60 output of lspci -x.
61 darwin Access method used on Mac OS X / Darwin. Must be run as root and
63 the system must have been booted with debug=0x144.
64
67 The library is controlled by several parameters. They should have sen‐
68 sible default values, but in case you want to do something unusual (or
69 even something weird), you can override them (see the -O switch of
70 lspci).
71 Parameters of specific access methods
74 dump.name
75 Name of the bus dump file to read from.
76 fbsd.path
78 Path to the FreeBSD PCI device.
79 nbsd.path
81 Path to the NetBSD PCI device.
82 obsd.path
84 Path to the OpenBSD PCI device.
85 proc.path
87 Path to the procfs bus tree.
88 sysfs.path
90 Path to the sysfs device tree.
91 Parameters for resolving of ID's via DNS
94 net.domain
95 DNS domain containing the ID database.
96 net.cache_name
98 Name of the file used for caching of resolved ID's.
99 Parameters for resolving of ID's via UDEV's HWDB
102 hwdb.disable
103 Disable use of HWDB if set to a non-zero value.
104
107 lspci(8), setpci(8), pci.ids(5), update-pciids(8)
108
111 The PCI Utilities are maintained by Martin Mares <mj@ucw.cz>.
112pciutils-3.6.4 25 January 2020 pcilib(7)