pci.ids(5) The PCI Utilities pci.ids(5)
NAME
pci.ids - list of known identifiers related to PCI devices
INTRODUCTION
Devices on the PCI bus are identified by a combination of a vendor ID
(assigned by the PCI SIG) and device ID (assigned by the vendor). Both
IDs are 16-bit integers and the device itself provides no translation
to a human-readable string.
In addition to the vendor and device, devices also report several other
identifiers:
• Device class and subclass (two 8-bit numbers)
• Programming interface (8-bit number, meaning specific for the sub-
class)
• Subsystem, which identifies the assembly in which the device is con-
tained. A typical example is an Ethernet add-in card: the device is
the Ethernet controller chip, while the card plays the role of the
subsystem. Subsystems have their vendor ID (from the same namespace
as device vendors) and subsystem ID. Generally, the meaning of the
subsystem ID depends on the device, but there are cases in which a
single subsystem ID is used for many devices - e.g., laptop mother-
boards.
The PCI utilities use the pci.ids file to translate all these nu-
meric IDs to strings.
KEEPING THE LIST UP-TO-DATE
The pci.ids file is generated from the PCI ID database, which is main-
tained at ]8;;https://pci-ids.ucw.cz/\https://pci-ids.ucw.cz/]8;;\. If you find any IDs missing from
the list, please contribute them to the database.
You can use the update-pciids command to download the current version
of the list.
Alternatively, you can use lspci -q to query the database online.
FILE FORMAT
The pci.ids file is a text file in plain ASCII, interpreted line by
line. Lines starting with the hash sign are treated as comments are
ignored. Comments regarding a specific entry are written immediately
before the entry.
Vendor entries start with a 4-digit hexadecimal vendor ID, followed by
one or more spaces, and the name of the vendor extending to the end of
the line.
Device entries are placed below the vendor entry. Each device entry
consists of a single TAB character, a 4-digit hexadecimal device ID,
followed by one or more spaces, and the name of the device extending to
the end of the line.
Subsystem entries are placed below the device entry. They start with
two TAB characters, a 4-digit hexadecimal vendor ID (which must be de-
fined elsewhere in the list), a single space, a 4-digit hexadecimal
subsystem ID, one or more spaces, and the name of the subsystem extend-
ing to the end of the line.
Class entries consist of "C", one space, 2-digit hexadecimal class ID,
one or more spaces, and the name of the class. Subclasses are placed
below the corresponding class, indented by a single TAB, followed by a
2-digit hexadecimal subclass ID, one or more spaces, and the name of
the subclass. Programming interfaces are below the subclass, indented
by two TABs, followed by a 2-digit hexadecimal prog-if ID, one or more
spaces, and the name.
There can be device-independent subsystem IDs, although the web inter-
face of the database does not support them yet. They start with a sub-
system vendor line consisting of "S", one space, and a 4-digit hexadec-
imal vendor ID (which must correspond to an already listed vendor).
Subsystems follow on subsequent lines, each indented by one TAB, fol-
lowed by a 4-digit hexadecimal subsystem ID, one or more spaces, and
the name of the subsystem.
To ensure extensibility of the format, lines starting with an unrecog-
nized letter followed by a single space are ignored and so are all fol-
lowing TAB-indented lines.
FILES
/usr/share/misc/pci.ids
Location of the list.
SEE ALSO
lspci(8), update-pciids(8), pcilib(7)
AUTHOR
The PCI Utilities are maintained by Martin Mares <mj@ucw.cz>.
pciutils-3.10.0 01 May 2023 pci.ids(5)
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