1 This package contains the PCI Utilities, version @VERSION@.
3 Copyright (c) 1997--2010 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 http://www.gnu.org/ for details.
12 The PCI Utilities package contains a library for portable access to PCI bus
13 configuration registers and several utilities based on this library.
15 In runs on the following systems:
17 Linux (via /sys/bus/pci, /proc/bus/pci or i386 ports)
18 FreeBSD (via /dev/pci)
20 OpenBSD (via /dev/pci)
21 GNU/kFreeBSD (via /dev/pci)
22 Solaris/i386 (direct port access)
23 Aix (via /dev/pci and odmget)
24 GNU Hurd (direct port access)
25 Windows (direct port access)
26 CYGWIN (direct port access)
28 Haiku (via /dev/misc/poke)
30 It should be very easy to add support for other systems as well (volunteers
31 wanted; if you want to try that, I'll be very glad to see the patches and
32 include them in the next version).
34 The utilities include: (See manual pages for more details)
36 - lspci: displays detailed information about all PCI buses and devices.
38 - setpci: allows to read from and write to PCI device configuration
39 registers. For example, you can adjust the latency timers with it.
40 CAUTION: There is a couple of dangerous points and caveats, please read
41 the manual page first!
43 - update-pciids: download the current version of the pci.ids file.
46 2. Compiling and (un)installing
47 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
48 Just run "make" to compile the package and then "make install" to install it.
49 Please note that GNU make is needed on most platforms.
51 If you want to change the default installation location, please override
52 the PREFIX variable specified in the Makefile -- e.g., you can use
53 "make PREFIX=/opt/pciutils install" to create a separate installation
54 not interfering with the rest of your system. Setting the DESTDIR variable
55 will allow you to install to a different directory from the one you intend
56 to eventually run it from. This is useful for people who are packaging
57 pciutils to install on other computers.
59 There are several options which can be set in the Makefile or overridden
62 ZLIB=yes/no Enable support for compressed pci.ids (requires zlib).
63 If it is enabled, pciutils will use pci.ids.gz in preference to
64 pci.ids, even if the pci.ids file is newer. If the pci.ids.gz
65 file is missing, it will use pci.ids instead. If you do not
66 specify this option, the configure script will try to guess
67 automatically based on the presence of zlib.
69 DNS=yes/no Enable support for querying the central database of PCI ID's
70 using DNS. Requires libresolv (which is available on most
71 systems as a part of the standard libraries) and tries to
72 autodetect its presence if the option is not specified.
74 SHARED=yes/ Build libpci as a shared library. Requires GCC 4.0 or newer.
75 no/local The ABI of the shared library is intended to remain backward
76 compatible for a long time (we use symbol versioning to achieve
77 that, like GNU libc does). The value `local' includes the
78 right directory name in the binaries, so the utilities can be
79 run without installation. This is not recommended for any
82 "make install-lib" installs the library together with its header files
83 for use by other programs.
85 When you are bored of dumping PCI registers, just use "make uninstall".
90 The database of PCI ID's (the pci.ids file) gets out of date much faster
91 than I release new versions of this package.
93 If you are missing names for any of your devices or you just want to stay
94 on the bleeding edge, download the most recent pci.ids file from
95 http://pciids.sf.net/ (e.g., by running the update-ids utility).
97 Alternatively, you can use `lspci -q' to query the central database
98 for new entries via network.
100 If your devices still appear as unknown, please send us their ID's and
101 names, the detailed instructions for submissions are listed on the
105 4. Getting new versions
106 ~~~~~~~~~~~~~~~~~~~~~~~
107 New versions of pciutils are available at the following places:
109 ftp://atrey.karlin.mff.cuni.cz/pub/linux/pci/
110 ftp://ftp.kernel.org/pub/software/utils/pciutils/ (expect a couple of hours delay)
111 ftp://metalab.unc.edu/pub/Linux/hardware/ (expect a couple of days delay)
113 There is also a public GIT tree at:
115 git://git.kernel.org/pub/scm/utils/pciutils/pciutils.git
120 So far, there is only a little documentation for the library except for the
121 general introduction in the pcilib(7) man page. If you want to use the
122 library in your programs, please follow the comments in lib/pci.h and in
123 the example program example.c.
128 If you have any bug reports or suggestions, send them to the author.
130 If you have any new ID's, I'll be very glad to add them to the database, but
131 please take a look at http://pciids.sf.net/ first and follow the instructions.
133 If you want, subscribe to linux-pci@vger.kernel.org (take a look at
134 http://vger.kernel.org/ for instructions).
135 Release notes about new versions will be send to the list and problems with
136 the Linux PCI support will be probably discussed there, too.
141 You also might want to look at the pciutils web page containing release
142 notes and other news: http://mj.ucw.cz/pciutils.shtml .
144 There also exists a utility called PowerTweak which is able to fine tune
145 parameters of many chipsets much better than the Bridge Optimization code
146 in Linux kernel (already removed in 2.3.x). See http://powertweak.sf.net/
147 for more information.