This package contains the PCI Utilities, version @VERSION@.
-Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
+Copyright (c) 1997--2024 Martin Mares <mj@ucw.cz>
All files in this package can be freely distributed and used according
to the terms of the GNU General Public License, either version 2 or
-(at your opinion) any newer version. See http://www.gnu.org/ for details.
+(at your opinion) any newer version. See https://www.gnu.org/ for details.
+
+The author wants to clarify that he does not consider programs which link
+dynamically to the libpci to be derived works of the library.
1. What's that?
Linux (via /sys/bus/pci, /proc/bus/pci or i386 ports)
FreeBSD (via /dev/pci)
NetBSD (via libpci)
- OpenBSD (via /dev/pci)
+ OpenBSD (via /dev/pci or i386 ports)
GNU/kFreeBSD (via /dev/pci)
Solaris/i386 (direct port access)
Aix (via /dev/pci and odmget)
GNU Hurd (direct port access)
- Windows (direct port access)
+ Windows (via cfgmgr32 or direct port access, see README.Windows for caveats)
+ CYGWIN (direct port access)
+ BeOS (via syscalls)
+ Haiku (via /dev/misc/poke)
+ Darwin (via IOKit)
+ DOS/DJGPP (via i386 ports)
+ SylixOS (via /proc/pci)
+ AmigaOS on PPC (via Expansion library)
It should be very easy to add support for other systems as well (volunteers
wanted; if you want to try that, I'll be very glad to see the patches and
- update-pciids: download the current version of the pci.ids file.
+ - pcilmr: performs margining on PCIe links.
+
2. Compiling and (un)installing
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Just run "make" to compile the package and then "make install" to install it.
+Please note that a C compiler supporting the C99 standard is required.
+Also, GNU make is needed on most platforms.
If you want to change the default installation location, please override
the PREFIX variable specified in the Makefile -- e.g., you can use
to eventually run it from. This is useful for people who are packaging
pciutils to install on other computers.
-The configure script will automatically enable support for a compressed
-pci.ids if you have zlib installed. You can override its guess by using
-"make ZLIB=no" or "make ZLIB=yes". If compressed support is enabled,
-pciutils will use pci.ids.gz in preference to pci.ids, even if the
-pci.ids file is newer. If the pci.ids.gz file is missing, it will use
-pci.ids instead.
+There are several options which can be set in the Makefile or overridden
+when running make:
+
+ ZLIB=yes/no Enable support for compressed pci.ids (requires zlib).
+ If it is enabled, pciutils will use pci.ids.gz in preference to
+ pci.ids, even if the pci.ids file is newer. If the pci.ids.gz
+ file is missing, it will use pci.ids instead. If you do not
+ specify this option, the configure script will try to guess
+ automatically based on the presence of zlib.
+
+ DNS=yes/no Enable support for querying the central database of PCI IDs
+ using DNS. Requires libresolv (which is available on most
+ systems as a part of the standard libraries) and tries to
+ autodetect its presence if the option is not specified.
+
+ SHARED=yes/ Build libpci as a shared library. Requires GCC 4.0 or newer.
+ no/local The ABI of the shared library is intended to remain backward
+ compatible for a long time (we use symbol versioning to achieve
+ that, like GNU libc does). The value `local' includes the
+ right directory name in the binaries, so the utilities can be
+ run without installation. This is not recommended for any
+ production builds.
+
+"make install-lib" installs the library together with its header files
+for use by other programs.
When you are bored of dumping PCI registers, just use "make uninstall".
-3. Getting new ID's
+3. Getting new IDs
~~~~~~~~~~~~~~~~~~~
-The database of PCI ID's (the pci.ids file) gets out of date much faster
-than I release new versions of this package.
+The database of PCI IDs (the pci.ids file) gets out of date much faster
+than I release new versions of this package, so it is maintained separately.
-If you are missing names for any of your devices or you just want to stay
-on the bleeding edge, download the most recent pci.ids file from
-http://pciids.sf.net/ (e.g., by running the update-ids utility).
+It lives at https://pci-ids.ucw.cz/, where you can browse the database,
+download the most recent pci.ids file (e.g., by running the update-ids utility)
+and also submit new entries.
Alternatively, you can use `lspci -q' to query the central database
for new entries via network.
-If your devices still appear as unknown, please send us their ID's and
-names, the detailed instructions for submissions are listed on the
-sf.net web page.
+The pci.ids file is also mirrored at https://github.com/pciutils/pciids.
+
+On Linux systems with a recent enough version of libudev, UDEV's HWDB
+database is consulted when pci.ids lacks the device.
4. Getting new versions
~~~~~~~~~~~~~~~~~~~~~~~
-New versions of pciutils are available at the following places:
+The current version of pciutils is available at:
+
+ https://mj.ucw.cz/sw/pciutils/
+
+The tarball can be downloaded at the following places:
- ftp://atrey.karlin.mff.cuni.cz/pub/linux/pci/
- ftp://ftp.kernel.org/pub/software/utils/pciutils/ (expect a couple of hours delay)
- ftp://metalab.unc.edu/pub/Linux/hardware/ (expect a couple of days delay)
+ https://mj.ucw.cz/download/linux/pci/
+ ftp://ftp.ucw.cz/pub/mj/linux/pci/
+ https://www.kernel.org/pub/software/utils/pciutils/ (expect a couple of hours delay)
There is also a public GIT tree at:
- git://git.kernel.org/pub/scm/utils/pciutils/pciutils.git
+ https://git.kernel.org/pub/scm/utils/pciutils/pciutils.git
+ https://github.com/pciutils/pciutils
5. Using the library
So far, there is only a little documentation for the library except for the
general introduction in the pcilib(7) man page. If you want to use the
library in your programs, please follow the comments in lib/pci.h and in
-the example program lib/example.c.
+the example program example.c.
6. Feedback
~~~~~~~~~~~
If you have any bug reports or suggestions, send them to the author.
-If you have any new ID's, I'll be very glad to add them to the database, but
-please take a look at http://pciids.sf.net/ first and follow the instructions.
-
-If you want, subscribe to linux-pci@atrey.karlin.mff.cuni.cz (send
-"subscribe linux-pci" to majordomo@atrey.karlin.mff.cuni.cz).
-Release notes about new versions will be send to the list and problems with
-the Linux PCI support will be probably discussed there, too.
-
-
-7. Miscellanea
-~~~~~~~~~~~~~~
-You also might want to look at the pciutils web page containing release
-notes and other news: http://mj.ucw.cz/pciutils.shtml .
+If you have any new IDs, I'll be very glad to add them to the database.
+Just submit them at https://pci-ids.ucw.cz/.
-There also exists a utility called PowerTweak which is able to fine tune
-parameters of many chipsets much better than the Bridge Optimization code
-in Linux kernel (already removed in 2.3.x). See http://powertweak.sf.net/
-for more information.
+Announcements of new versions are sent to linux-pci@vger.kernel.org
+(see http://vger.kernel.org/ for instructions).
Have fun
Martin