1 This package contains the PCI Utilities, version @VERSION@.
3 Copyright (c) 1997--2024 Martin Mares <mj@ucw.cz>
5 All files in this package can be freely distributed and used according
6 to the terms of the GNU General Public License, either version 2 or
7 (at your opinion) any newer version. See https://www.gnu.org/ for details.
9 The author wants to clarify that he does not consider programs which link
10 dynamically to the libpci to be derived works of the library.
15 The PCI Utilities package contains a library for portable access to PCI bus
16 configuration registers and several utilities based on this library.
18 In runs on the following systems:
20 Linux (via /sys/bus/pci, /proc/bus/pci or i386 ports)
21 FreeBSD (via /dev/pci)
23 OpenBSD (via /dev/pci or i386 ports)
24 GNU/kFreeBSD (via /dev/pci)
25 Solaris/i386 (direct port access)
26 Aix (via /dev/pci and odmget)
27 GNU Hurd (direct port access)
28 Windows (via cfgmgr32 or direct port access, see README.Windows for caveats)
29 CYGWIN (direct port access)
31 Haiku (via /dev/misc/poke)
33 DOS/DJGPP (via i386 ports)
34 SylixOS (via /proc/pci)
35 AmigaOS on PPC (via Expansion library)
37 It should be very easy to add support for other systems as well (volunteers
38 wanted; if you want to try that, I'll be very glad to see the patches and
39 include them in the next version).
41 The utilities include: (See manual pages for more details)
43 - lspci: displays detailed information about all PCI buses and devices.
45 - setpci: allows to read from and write to PCI device configuration
46 registers. For example, you can adjust the latency timers with it.
47 CAUTION: There is a couple of dangerous points and caveats, please read
48 the manual page first!
50 - update-pciids: download the current version of the pci.ids file.
52 - pcilmr: performs margining on PCIe links.
55 2. Compiling and (un)installing
56 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
57 Just run "make" to compile the package and then "make install" to install it.
58 Please note that a C compiler supporting the C99 standard is required.
59 Also, GNU make is needed on most platforms.
61 If you want to change the default installation location, please override
62 the PREFIX variable specified in the Makefile -- e.g., you can use
63 "make PREFIX=/opt/pciutils install" to create a separate installation
64 not interfering with the rest of your system. Setting the DESTDIR variable
65 will allow you to install to a different directory from the one you intend
66 to eventually run it from. This is useful for people who are packaging
67 pciutils to install on other computers.
69 There are several options which can be set in the Makefile or overridden
72 ZLIB=yes/no Enable support for compressed pci.ids (requires zlib).
73 If it is enabled, pciutils will use pci.ids.gz in preference to
74 pci.ids, even if the pci.ids file is newer. If the pci.ids.gz
75 file is missing, it will use pci.ids instead. If you do not
76 specify this option, the configure script will try to guess
77 automatically based on the presence of zlib.
79 DNS=yes/no Enable support for querying the central database of PCI IDs
80 using DNS. Requires libresolv (which is available on most
81 systems as a part of the standard libraries) and tries to
82 autodetect its presence if the option is not specified.
84 SHARED=yes/ Build libpci as a shared library. Requires GCC 4.0 or newer.
85 no/local The ABI of the shared library is intended to remain backward
86 compatible for a long time (we use symbol versioning to achieve
87 that, like GNU libc does). The value `local' includes the
88 right directory name in the binaries, so the utilities can be
89 run without installation. This is not recommended for any
92 "make install-lib" installs the library together with its header files
93 for use by other programs.
95 When you are bored of dumping PCI registers, just use "make uninstall".
100 The database of PCI IDs (the pci.ids file) gets out of date much faster
101 than I release new versions of this package, so it is maintained separately.
103 It lives at https://pci-ids.ucw.cz/, where you can browse the database,
104 download the most recent pci.ids file (e.g., by running the update-ids utility)
105 and also submit new entries.
107 Alternatively, you can use `lspci -q' to query the central database
108 for new entries via network.
110 The pci.ids file is also mirrored at https://github.com/pciutils/pciids.
112 On Linux systems with a recent enough version of libudev, UDEV's HWDB
113 database is consulted when pci.ids lacks the device.
116 4. Getting new versions
117 ~~~~~~~~~~~~~~~~~~~~~~~
118 The current version of pciutils is available at:
120 https://mj.ucw.cz/sw/pciutils/
122 The tarball can be downloaded at the following places:
124 https://mj.ucw.cz/download/linux/pci/
125 ftp://ftp.ucw.cz/pub/mj/linux/pci/
126 https://www.kernel.org/pub/software/utils/pciutils/ (expect a couple of hours delay)
128 There is also a public GIT tree at:
130 https://git.kernel.org/pub/scm/utils/pciutils/pciutils.git
131 https://github.com/pciutils/pciutils
136 So far, there is only a little documentation for the library except for the
137 general introduction in the pcilib(7) man page. If you want to use the
138 library in your programs, please follow the comments in lib/pci.h and in
139 the example program example.c.
144 If you have any bug reports or suggestions, send them to the author.
146 If you have any new IDs, I'll be very glad to add them to the database.
147 Just submit them at https://pci-ids.ucw.cz/.
149 Announcements of new versions are sent to linux-pci@vger.kernel.org
150 (see http://vger.kernel.org/ for instructions).