1lspci(8) The PCI Utilities lspci(8)
2
6 lspci - list all PCI devices
7
9 lspci [options]
10
12 lspci is a utility for displaying information about PCI buses in the
13 system and devices connected to them.
14 By default, it shows a brief list of devices. Use the options described
16 below to request either a more verbose output or output intended for
17 parsing by other programs.
18 If you are going to report bugs in PCI device drivers or in lspci
20 itself, please include output of "lspci -vvx" or even better "lspci
21 -vvxxx" (however, see below for possible caveats).
22 Some parts of the output, especially in the highly verbose modes, are
24 probably intelligible only to experienced PCI hackers. For exact defi‐
25 nitions of the fields, please consult either the PCI specifications or
26 the header.h and /usr/include/linux/pci.h include files.
27 Access to some parts of the PCI configuration space is restricted to
29 root on many operating systems, so the features of lspci available to
30 normal users are limited. However, lspci tries its best to display as
31 much as available and mark all other information with <access denied>
32 text.
33
36 Basic display modes
37 -m Dump PCI device data in a backward-compatible machine readable
38 form. See below for details.
39 -mm Dump PCI device data in a machine readable form for easy parsing
41 by scripts. See below for details.
42 -t Show a tree-like diagram containing all buses, bridges, devices
44 and connections between them.
45 Display options
48 -v Be verbose and display detailed information about all devices.
49 -vv Be very verbose and display more details. This level includes
51 everything deemed useful.
52 -vvv Be even more verbose and display everything we are able to
54 parse, even if it doesn't look interesting at all (e.g., unde‐
55 fined memory regions).
56 -k Show kernel drivers handling each device and also kernel modules
58 capable of handling it. Turned on by default when -v is given
59 in the normal mode of output. (Currently works only on Linux
60 with kernel 2.6 or newer.)
61 -x Show hexadecimal dump of the standard part of the configuration
63 space (the first 64 bytes or 128 bytes for CardBus bridges).
64 -xxx Show hexadecimal dump of the whole PCI configuration space. It
66 is available only to root as several PCI devices crash when you
67 try to read some parts of the config space (this behavior proba‐
68 bly doesn't violate the PCI standard, but it's at least very
69 stupid). However, such devices are rare, so you needn't worry
70 much.
71 -xxxx Show hexadecimal dump of the extended (4096-byte) PCI configura‐
73 tion space available on PCI-X 2.0 and PCI Express buses.
74 -b Bus-centric view. Show all IRQ numbers and addresses as seen by
76 the cards on the PCI bus instead of as seen by the kernel.
77 -D Always show PCI domain numbers. By default, lspci suppresses
79 them on machines which have only domain 0.
80 Options to control resolving ID's to names
83 -n Show PCI vendor and device codes as numbers instead of looking
84 them up in the PCI ID list.
85 -nn Show PCI vendor and device codes as both numbers and names.
87 -q Use DNS to query the central PCI ID database if a device is not
89 found in the local pci.ids file. If the DNS query succeeds, the
90 result is cached in ~/.pciids-cache and it is recognized in sub‐
91 sequent runs even if -q is not given any more. Please use this
92 switch inside automated scripts only with caution to avoid over‐
93 loading the database servers.
94 -qq Same as -q, but the local cache is reset.
96 -Q Query the central database even for entries which are recognized
98 locally. Use this if you suspect that the displayed entry is
99 wrong.
100 Options for selection of devices
103 -s [[[[<domain>]:]<bus>]:][<device>][.[<func>]]
104 Show only devices in the specified domain (in case your machine
105 has several host bridges, they can either share a common bus
106 number space or each of them can address a PCI domain of its
107 own; domains are numbered from 0 to ffff), bus (0 to ff), device
108 (0 to 1f) and function (0 to 7). Each component of the device
109 address can be omitted or set to "*", both meaning "any value".
110 All numbers are hexadecimal. E.g., "0:" means all devices on
111 bus 0, "0" means all functions of device 0 on any bus, "0.3"
112 selects third function of device 0 on all buses and ".4" shows
113 only the fourth function of each device.
114 -d [<vendor>]:[<device>][:<class>]
116 Show only devices with specified vendor, device and class ID.
117 The ID's are given in hexadecimal and may be omitted or given as
118 "*", both meaning "any value".
119 Other options
122 -i <file>
123 Use <file> as the PCI ID list instead of
124 /usr/share/hwdata/pci.ids.
125 -p <file>
127 Use <file> as the map of PCI ID's handled by kernel modules. By
128 default, lspci uses /lib/modules/kernel_version/modules.pcimap.
129 Applies only to Linux systems with recent enough module tools.
130 -M Invoke bus mapping mode which performs a thorough scan of all
132 PCI devices, including those behind misconfigured bridges, etc.
133 This option gives meaningful results only with a direct hardware
134 access mode, which usually requires root privileges. Please
135 note that the bus mapper only scans PCI domain 0.
136 --version
138 Shows lspci version. This option should be used stand-alone.
139 PCI access options
142 The PCI utilities use the PCI library to talk to PCI devices (see
143 pcilib(7) for details). You can use the following options to influence
144 its behavior:
145 -A <method>
147 The library supports a variety of methods to access the PCI
148 hardware. By default, it uses the first access method avail‐
149 able, but you can use this option to override this decision. See
150 -A help for a list of available methods and their descriptions.
151 -O <param>=<value>
153 The behavior of the library is controlled by several named
154 parameters. This option allows to set the value of any of the
155 parameters. Use -O help for a list of known parameters and their
156 default values.
157 -H1 Use direct hardware access via Intel configuration mechanism 1.
159 (This is a shorthand for -A intel-conf1.)
160 -H2 Use direct hardware access via Intel configuration mechanism 2.
162 (This is a shorthand for -A intel-conf2.)
163 -F <file>
165 Instead of accessing real hardware, read the list of devices and
166 values of their configuration registers from the given file pro‐
167 duced by an earlier run of lspci -x. This is very useful for
168 analysis of user-supplied bug reports, because you can display
169 the hardware configuration in any way you want without disturb‐
170 ing the user with requests for more dumps.
171 -G Increase debug level of the library.
173
176 If you intend to process the output of lspci automatically, please use
177 one of the machine-readable output formats (-m, -vm, -vmm) described in
178 this section. All other formats are likely to change between versions
179 of lspci.
180 All numbers are always printed in hexadecimal. If you want to process
183 numeric ID's instead of names, please add the -n switch.
184 Simple format (-m)
187 In the simple format, each device is described on a single line, which
188 is formatted as parameters suitable for passing to a shell script,
189 i.e., values separated by whitespaces, quoted and escaped if necessary.
190 Some of the arguments are positional: slot, class, vendor name, device
191 name, subsystem vendor name and subsystem name (the last two are empty
192 if the device has no subsystem); the remaining arguments are option-
193 like:
194 -rrev Revision number.
197 -pprogif
200 Programming interface.
201 The relative order of positional arguments and options is undefined.
204 New options can be added in future versions, but they will always have
205 a single argument not separated from the option by any spaces, so they
206 can be easily ignored if not recognized.
207 Verbose format (-vmm)
210 The verbose output is a sequence of records separated by blank lines.
211 Each record describes a single device by a sequence of lines, each line
212 containing a single `tag: value' pair. The tag and the value are sepa‐
213 rated by a single tab character. Neither the records nor the lines
214 within a record are in any particular order. Tags are case-sensitive.
215 The following tags are defined:
218 Slot The name of the slot where the device resides
221 ([domain:]bus:device.function). This tag is always the first in
222 a record.
223 Class Name of the class.
226 Vendor Name of the vendor.
229 Device Name of the device.
232 SVendor
235 Name of the subsystem vendor (optional).
236 SDevice
239 Name of the subsystem (optional).
240 PhySlot
243 The physical slot where the device resides (optional, Linux
244 only).
245 Rev Revision number (optional).
248 ProgIf Programming interface (optional).
251 Driver Kernel driver currently handling the device (optional, Linux
254 only).
255 Module Kernel module reporting that it is capable of handling the
258 device (optional, Linux only).
259 NUMANode
262 NUMA node this device is connected to (optional, Linux only).
263 New tags can be added in future versions, so you should silently ignore
266 any tags you don't recognize.
267 Backward-compatible verbose format (-vm)
270 In this mode, lspci tries to be perfectly compatible with its old ver‐
271 sions. It's almost the same as the regular verbose format, but the
272 Device tag is used for both the slot and the device name, so it occurs
273 twice in a single record. Please avoid using this format in any new
274 code.
275
278 /usr/share/hwdata/pci.ids
279 A list of all known PCI ID's (vendors, devices, classes and sub‐
280 classes). Maintained at http://pciids.sourceforge.net/, use the
281 update-pciids utility to download the most recent version.
282 /usr/share/hwdata/pci.ids.gz
284 If lspci is compiled with support for compression, this file is
285 tried before pci.ids.
286 ~/.pciids-cache
288 All ID's found in the DNS query mode are cached in this file.
289
292 Sometimes, lspci is not able to decode the configuration registers com‐
293 pletely. This usually happens when not enough documentation was avail‐
294 able to the authors. In such cases, it at least prints the <?> mark to
295 signal that there is potentially something more to say. If you know the
296 details, patches will be of course welcome.
297 Access to the extended configuration space is currently supported only
299 by the linux_sysfs back-end.
300
303 setpci(8), update-pciids(8), pcilib(7)
304
307 The PCI Utilities are maintained by Martin Mares <mj@ucw.cz>.
308pciutils-3.5.6 17 November 2017 lspci(8)