1 This package contains the PCI Utilities, version 2.1.10.
3 Copyright (c) 1997--2002 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. This is the same distribution
8 policy as for the Linux kernel itself -- see /usr/src/linux/COPYING
14 The PCI Utilities package contains a library for portable access to PCI bus
15 configuration registers and several utilities based on this library.
17 Currently, pciutils work on all versions of Linux and they also have somewhat
18 experimental support for FreeBSD and AIX. It should be very easy to add support
19 for other systems as well (volunteers wanted; if you want to try that, please
20 send the patches to me, so that I can include them in the next version).
22 The utilities include: (See manual pages for more details)
24 - lspci: displays detailed information about all PCI busses and devices.
26 - setpci: allows to read from and write to PCI device configuration
27 registers. For example, you can adjust the latency timers with it.
28 CAUTION: There is a couple of dangerous points and caveats, please read
29 the manual page first!
32 2. Compiling and (un)installing
33 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
34 Just run "make" to compile the package and then "make install" to install it.
36 If you want to change the default installation location, please override
37 the ROOT and PREFIX variables specified in the Makefile -- e.g., you can
38 use "make PREFIX=/opt/pciutils ROOT=/opt/pciutils install" to create
39 a separate installation not interfering with the rest of your system.
41 When you are bored of dumping PCI registers, just use "make uninstall".
46 The database of PCI ID's (the pci.ids file) gets out of date much faster
47 than I release new versions of this package.
49 If you are missing names for any of your devices or you just want to stay
50 on the bleeding edge, download the most recent pci.ids file from
51 http://pciids.sf.net/. You can try "make update-ids" to accomplish that
52 automatically (requires wget and bzip2).
54 If your devices still appear as unknown, please send us their ID's and
55 names, the detailed instructions for submissions are listed on the
59 4. Available access methods
60 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
61 The library (and therefore all the utilities) know a variety of methods for
62 accessing the PCI registers. Here is a list of them:
64 /proc/bus/pci on all Linux systems since kernel 2.1.82.
65 direct port access on all Linux systems with i386, to be used when
66 /proc/bus/pci is unavailable or you want to scan
67 the bus manually when hunting kernel bugs.
68 dumps reading of dumps produced by `lspci -x'.
69 lsdev + odmget used on AIX
70 /dev/pci used on FreeBSD
76 There is still no documentation for the library, if you want to use it
77 in your programs, please follow the comments in lib/pci.h and in the
78 example program lib/example.c.
83 If you have any bug reports or suggestions, send them to the author.
85 If you have any new ID's, I'll be very glad to add them to the database, but
86 please take a look at http://pciids.sf.net/ first and follow the instructions.
88 If you want, subscribe to linux-pci@atrey.karlin.mff.cuni.cz (send
89 "subscribe linux-pci" to majordomo@atrey.karlin.mff.cuni.cz).
90 Release notes about new versions will be send to the list and problems with
91 the Linux PCI support will be probably discussed there, too.
96 You also might want to look at the pciutils web page containing release
97 notes and other news: http://atrey.karlin.mff.cuni.cz/~mj/pciutils.html .
99 There also exists a utility called PowerTweak which is able to fine tune
100 parameters of many chipsets much better than the Bridge Optimization code
101 in Linux kernel (already removed in 2.3.x). See http://powertweak.sf.net/
102 for more information.