1 .TH lspci 8 "@TODAY@" "@VERSION@" "The PCI Utilities"
4 lspci \- list all PCI devices
10 is a utility for displaying information about all PCI buses in the system and
11 all devices connected to them.
13 By default, it shows a brief list of devices. Use the options described
14 below to request either a more verbose output or output intended for
15 parsing by other programs.
17 If you are going to report bugs in PCI device drivers or in
19 itself, please include output of "lspci -vvx" or even better "lspci -vvxxx"
20 (however, see below for possible caveats).
22 Some parts of the output, especially in the highly verbose modes, is probably
23 intelligible only to experienced PCI hackers. For the exact definitions of
24 the fields, please consult either the PCI specifications or the
27 .B /usr/include/linux/pci.h
30 Access to some parts of the PCI configuration space is restricted to root
31 on many operating systems, so the features of
33 available to normal users are limited. However,
35 tries its best to display as much as available and mark all other
43 Be verbose and display detailed information about all devices.
46 Be very verbose and display more details. This level includes everything deemed
50 Be even more verbose and display everything we are able to parse,
51 even if it doesn't look interesting at all (e.g., undefined memory regions).
54 Show PCI vendor and device codes as numbers instead of looking them up in the
58 Show hexadecimal dump of the standard part of the configuration space (the first
59 64 bytes or 128 bytes for CardBus bridges).
62 Show hexadecimal dump of the whole PCI configuration space. It is available only to root
63 as several PCI devices
65 when you try to read some parts of the config space (this behavior probably
66 doesn't violate the PCI standard, but it's at least very stupid). However, such
67 devices are rare, so you needn't worry much.
70 Show hexadecimal dump of the extended (4096-byte) PCI configuration space available
71 on PCI-X 2.0 and PCI Express buses.
74 Bus-centric view. Show all IRQ numbers and addresses as seen by the cards on the
75 PCI bus instead of as seen by the kernel.
78 Show a tree-like diagram containing all buses, bridges, devices and connections
81 .B -s [[[[<domain>]:]<bus>]:][<slot>][.[<func>]]
82 Show only devices in the specified domain (in case your machine has several host bridges,
83 they can either share a common bus number space or each of them can address a PCI domain
84 of its own; domains are numbered from 0 to ffff), bus (0 to ff), slot (0 to 1f) and function (0 to 7).
85 Each component of the device address can be omitted or set to "*", both meaning "any value". All numbers are
86 hexadecimal. E.g., "0:" means all devices on bus 0, "0" means all functions of device 0
87 on any bus, "0.3" selects third function of device 0 on all buses and ".4" shows only
88 the fourth function of each device.
90 .B -d [<vendor>]:[<device>]
91 Show only devices with specified vendor and device ID. Both ID's are given in
92 hexadecimal and may be omitted or given as "*", both meaning "any value".
98 as the PCI ID list instead of @IDSDIR@/pci.ids.
101 Dump PCI device data in machine readable form (both normal and verbose format supported)
102 for easy parsing by scripts. Please don't use any other formats for this purpose, they
103 are likely to change in the future versions of lspci.
106 Always show PCI domain numbers. By default, lspci suppresses them on machines which
110 Invoke bus mapping mode which performs a thorough scan of all PCI devices, including
111 those behind misconfigured bridges etc. This option is available only to root and it
112 gives meaningful results only if combined with direct hardware access mode (otherwise
113 the results are identical to normal listing modes, modulo bugs in lspci). Please note
114 that the bus mapper doesn't support PCI domains and scans only domain 0.
119 version. This option should be used stand-alone.
121 .SH PCILIB AND ITS OPTIONS
122 The PCI utilities use PCILIB (a portable library providing platform-independent
123 functions for PCI configuration space access) to talk to the PCI cards. It supports
124 the following access methods:
130 filesystem on Linux 2.6 and newer. The standard header of the config space is available
131 to all users, the rest only to root. Supports extended configuration space and PCI domains.
136 interface supported by Linux 2.1 and newer. The standard header of the config space is available
137 to all users, the rest only to root.
140 Direct hardware access via Intel configuration mechanism 1. Available on i386 and compatibles
141 on Linux, Solaris/x86, GNU Hurd and Windows. Requires root privileges.
144 Direct hardware access via Intel configuration mechanism 2. Available on i386 and compatibles
145 on Linux, Solaris/x86 and GNU Hurd. Requires root privileges. Warning: This method
146 is able to address only first 16 devices on any bus and it seems to be very
147 unreliable in many cases.
152 device on FreeBSD. Requires root privileges.
155 Access method used on AIX. Requires root privileges.
160 device on NetBSD accessed using the local libpci library.
163 By default, PCILIB uses the first available access method and displays no debugging
164 messages, but you can use the following switches to control its behavior:
168 Force use of the linux_proc access method, using
170 instead of /proc/bus/pci.
173 Use direct hardware access via Intel configuration mechanism 1.
176 Use direct hardware access via Intel configuration mechanism 2.
179 Extract all information from given file containing output of lspci -x. This is very
180 useful for analysis of user-supplied bug reports, because you can display the
181 hardware configuration in any way you want without disturbing the user with
182 requests for more dumps.
185 Increase debug level of the library.
190 A list of all known PCI ID's (vendors, devices, classes and subclasses). Maintained
191 at http://pciids.sourceforge.net/, use the
193 utility to download the most recent version.
196 An interface to PCI bus configuration space provided by the post-2.1.82 Linux
197 kernels. Contains per-bus subdirectories with per-card config space files and a
199 file containing a list of all PCI devices.
203 .BR update-pciids (8)
206 The PCI Utilities are maintained by Martin Mares <mj@ucw.cz>.