README

   1 This package contains the PCI Utilities, version 2.1.9.
   2
   3 Copyright (c) 1997--2002 Martin Mares <mj@ucw.cz>
   4
   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
   9 for details.
  10
  11
  12 1. What's that?
  13 ~~~~~~~~~~~~~~~
  14 The PCI Utilities package contains a library for portable access to PCI bus
  15 configuration registers and several utilities based on this library.
  16
  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).
  21
  22 The utilities include:  (See manual pages for more details)
  23
  24   - lspci: displays detailed information about all PCI busses and devices.
  25
  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!
  30
  31
  32 2. Compiling and (un)installing
  33 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  34 Just run "make" to compile the package and then "make install" to install it.
  35
  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.
  40
  41 When you are bored of dumping PCI registers, just use "make uninstall".
  42
  43
  44 3. Getting new ID's
  45 ~~~~~~~~~~~~~~~~~~~
  46 The database of PCI ID's (the pci.ids file) gets out of date much faster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.
  48
  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/. If your devices still appear as unknown, please
  52 send us their ID's and names, the detailed instructions for submissions
  53 are listed on the sf.net web page.
  54
  55
  56 4. Available access methods
  57 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
  58 The library (and therefore all the utilities) know a variety of methods for
  59 accessing the PCI registers. Here is a list of them:
  60
  61    /proc/bus/pci        on all Linux systems since kernel 2.1.82.
  62    direct port access   on all Linux systems with i386, to be used when
  63                         /proc/bus/pci is unavailable or you want to scan
  64                         the bus manually when hunting kernel bugs.
  65    dumps                reading of dumps produced by `lspci -x'.
  66    lsdev + odmget       used on AIX
  67    /dev/pci             used on FreeBSD
  68
  69
  70 5. Using the library
  71 ~~~~~~~~~~~~~~~~~~~~
  72 There is still no documentation for the library, if you want to use it
  73 in your programs, please follow the comments in lib/pci.h and in the
  74 example program lib/example.c.
  75
  76
  77 6. Feedback
  78 ~~~~~~~~~~~
  79 If you have any bug reports or suggestions, send them to the author.
  80
  81 If you have any new ID's, I'll be very glad to add them to the database, but
  82 please take a look at http://pciids.sf.net/ first and follow the instructions.
  83
  84 If you want, subscribe to linux-pci@atrey.karlin.mff.cuni.cz (send
  85 "subscribe linux-pci" to majordomo@atrey.karlin.mff.cuni.cz).
  86 Release notes about new versions will be send to the list and problems with
  87 the Linux PCI support will be probably discussed there, too.
  88
  89
  90 7. Miscellanea
  91 ~~~~~~~~~~~~~~
  92 You also might want to look at the pciutils web page containing release
  93 notes and other news: http://atrey.karlin.mff.cuni.cz/~mj/pciutils.html .
  94
  95 There also exists a utility called PowerTweak which is able to fine tune
  96 parameters of many chipsets much better than the Bridge Optimization code
  97 in Linux kernel (already removed in 2.3.x). See http://powertweak.sf.net/
  98 for more information.
  99
 100                                         Have fun
 101                                                         Martin