1 This package contains the PCI Utilities, version @VERSION@.
3 Copyright (c) 1997--2004 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.
10 ############################################################################
12 Beware, this is a preliminary test version! Anything might not work!
14 Some more things I intend to merge before the 2.2.0 release:
16 o pcimodules and possibly other Linux module related stuff
17 o New ID's from the pciids project
19 ############################################################################
25 The PCI Utilities package contains a library for portable access to PCI bus
26 configuration registers and several utilities based on this library.
28 Currently, pciutils work on all versions of Linux and they also have somewhat
29 experimental support for FreeBSD, NetBSD, AIX, GNU Hurd and Solaris/x86.
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 busses 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.
50 If you want to change the default installation location, please override
51 the ROOT and PREFIX variables specified in the Makefile -- e.g., you can
52 use "make PREFIX=/opt/pciutils ROOT=/opt/pciutils install" to create
53 a separate installation not interfering with the rest of your system.
55 When you are bored of dumping PCI registers, just use "make uninstall".
60 The database of PCI ID's (the pci.ids file) gets out of date much faster
61 than I release new versions of this package.
63 If you are missing names for any of your devices or you just want to stay
64 on the bleeding edge, download the most recent pci.ids file from
65 http://pciids.sf.net/ (e.g., by running the update-ids utility).
67 If your devices still appear as unknown, please send us their ID's and
68 names, the detailed instructions for submissions are listed on the
72 4. Available access methods
73 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
74 The library (and therefore all the utilities) know a variety of methods for
75 accessing the PCI registers. Here is a list of them, sorted by autodetection
78 /proc/bus/pci on all Linux systems since kernel 2.1.82.
79 /sys/bus/pci on all Linux systems since kernel 2.5.xx.
80 direct port access on i386 systems running Linux, GNU Hurd or Solaris/x86;
81 available only to root, useful if no other access
82 method is available or you want to hunt kernel bugs
83 /dev/pci used on FreeBSD
84 lsdev + odmget used on AIX
86 dumps reading of dumps produced by `lspci -x'
87 (this one is not autodetected)
92 There is still no documentation for the library, if you want to use it
93 in your programs, please follow the comments in lib/pci.h and in the
94 example program lib/example.c.
99 If you have any bug reports or suggestions, send them to the author.
101 If you have any new ID's, I'll be very glad to add them to the database, but
102 please take a look at http://pciids.sf.net/ first and follow the instructions.
104 If you want, subscribe to linux-pci@atrey.karlin.mff.cuni.cz (send
105 "subscribe linux-pci" to majordomo@atrey.karlin.mff.cuni.cz).
106 Release notes about new versions will be send to the list and problems with
107 the Linux PCI support will be probably discussed there, too.
112 You also might want to look at the pciutils web page containing release
113 notes and other news: http://atrey.karlin.mff.cuni.cz/~mj/pciutils.shtml .
115 There also exists a utility called PowerTweak which is able to fine tune
116 parameters of many chipsets much better than the Bridge Optimization code
117 in Linux kernel (already removed in 2.3.x). See http://powertweak.sf.net/
118 for more information.