1This package contains the PCI Utilities, version @VERSION@. 2 3Copyright (c) 1997--2004 Martin Mares <[email protected]> 4 5All files in this package can be freely distributed and used according 6to 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. 8 9 10############################################################################ 11 12Beware, this is a preliminary test version! Anything might not work! 13 14Some more things I intend to merge before the 2.2.0 release: 15 16 o pcimodules and possibly other Linux module related stuff 17 o New ID's from the pciids project 18 o Avoid calling show_ext_caps() for non-ext devices. 19 20############################################################################ 21 22 23 241. What's that? 25~~~~~~~~~~~~~~~ 26The PCI Utilities package contains a library for portable access to PCI bus 27configuration registers and several utilities based on this library. 28 29Currently, pciutils work on all versions of Linux and they also have somewhat 30experimental support for FreeBSD, NetBSD, AIX, GNU Hurd and Solaris/x86. 31It should be very easy to add support for other systems as well (volunteers 32wanted; if you want to try that, I'll be very glad to see the patches and 33include them in the next version). 34 35The utilities include: (See manual pages for more details) 36 37 - lspci: displays detailed information about all PCI busses and devices. 38 39 - setpci: allows to read from and write to PCI device configuration 40 registers. For example, you can adjust the latency timers with it. 41 CAUTION: There is a couple of dangerous points and caveats, please read 42 the manual page first! 43 44 - update-pciids: download the current version of the pci.ids file. 45 46 472. Compiling and (un)installing 48~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 49Just run "make" to compile the package and then "make install" to install it. 50 51If you want to change the default installation location, please override 52the ROOT and PREFIX variables specified in the Makefile -- e.g., you can 53use "make PREFIX=/opt/pciutils ROOT=/opt/pciutils install" to create 54a separate installation not interfering with the rest of your system. 55 56When you are bored of dumping PCI registers, just use "make uninstall". 57 58 593. Getting new ID's 60~~~~~~~~~~~~~~~~~~~ 61The database of PCI ID's (the pci.ids file) gets out of date much faster 62than I release new versions of this package. 63 64If you are missing names for any of your devices or you just want to stay 65on the bleeding edge, download the most recent pci.ids file from 66http://pciids.sf.net/ (e.g., by running the update-ids utility). 67 68If your devices still appear as unknown, please send us their ID's and 69names, the detailed instructions for submissions are listed on the 70sf.net web page. 71 72 734. Available access methods 74~~~~~~~~~~~~~~~~~~~~~~~~~~~ 75The library (and therefore all the utilities) know a variety of methods for 76accessing the PCI registers. Here is a list of them, sorted by autodetection 77priority: 78 79 /proc/bus/pci on all Linux systems since kernel 2.1.82. 80 /sys/bus/pci on all Linux systems since kernel 2.5.xx. 81 direct port access on i386 systems running Linux, GNU Hurd or Solaris/x86; 82 available only to root, useful if no other access 83 method is available or you want to hunt kernel bugs 84 /dev/pci used on FreeBSD 85 lsdev + odmget used on AIX 86 libpci used on NetBSD 87 dumps reading of dumps produced by `lspci -x' 88 (this one is not autodetected) 89 90 915. Using the library 92~~~~~~~~~~~~~~~~~~~~ 93There is still no documentation for the library, if you want to use it 94in your programs, please follow the comments in lib/pci.h and in the 95example program lib/example.c. 96 97 986. Feedback 99~~~~~~~~~~~ 100If you have any bug reports or suggestions, send them to the author. 101 102If you have any new ID's, I'll be very glad to add them to the database, but 103please take a look at http://pciids.sf.net/ first and follow the instructions. 104 105If you want, subscribe to [email protected] (send 106"subscribe linux-pci" to [email protected]). 107Release notes about new versions will be send to the list and problems with 108the Linux PCI support will be probably discussed there, too. 109 110 1117. Miscellanea 112~~~~~~~~~~~~~~ 113You also might want to look at the pciutils web page containing release 114notes and other news: http://atrey.karlin.mff.cuni.cz/~mj/pciutils.shtml . 115 116There also exists a utility called PowerTweak which is able to fine tune 117parameters of many chipsets much better than the Bridge Optimization code 118in Linux kernel (already removed in 2.3.x). See http://powertweak.sf.net/ 119for more information. 120 121 Have fun 122 Martin 123