792 lines
30 KiB
C
792 lines
30 KiB
C
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/*
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* Wavelan Pcmcia driver
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*
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* Jean II - HPLB '96
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*
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* Reorganisation and extension of the driver.
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*
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* This file contain all definition and declarations necessary for the
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* wavelan pcmcia driver. This file is a private header, so it should
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* be included only on wavelan_cs.c !!!
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*/
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#ifndef WAVELAN_CS_P_H
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#define WAVELAN_CS_P_H
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/************************** DOCUMENTATION **************************/
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/*
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* This driver provide a Linux interface to the Wavelan Pcmcia hardware
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* The Wavelan is a product of Lucent (http://www.wavelan.com/).
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* This division was formerly part of NCR and then AT&T.
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* Wavelan are also distributed by DEC (RoamAbout DS)...
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*
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* To know how to use this driver, read the PCMCIA HOWTO.
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* If you want to exploit the many other fonctionalities, look comments
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* in the code...
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*
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* This driver is the result of the effort of many peoples (see below).
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*/
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/* ------------------------ SPECIFIC NOTES ------------------------ */
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/*
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* Web page
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* --------
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* I try to maintain a web page with the Wireless LAN Howto at :
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* http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Wavelan.html
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*
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* SMP
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* ---
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* We now are SMP compliant (I eventually fixed the remaining bugs).
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* The driver has been tested on a dual P6-150 and survived my usual
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* set of torture tests.
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* Anyway, I spent enough time chasing interrupt re-entrancy during
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* errors or reconfigure, and I designed the locked/unlocked sections
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* of the driver with great care, and with the recent addition of
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* the spinlock (thanks to the new API), we should be quite close to
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* the truth.
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* The SMP/IRQ locking is quite coarse and conservative (i.e. not fast),
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* but better safe than sorry (especially at 2 Mb/s ;-).
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*
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* I have also looked into disabling only our interrupt on the card
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* (via HACR) instead of all interrupts in the processor (via cli),
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* so that other driver are not impacted, and it look like it's
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* possible, but it's very tricky to do right (full of races). As
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* the gain would be mostly for SMP systems, it can wait...
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*
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* Debugging and options
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* ---------------------
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* You will find below a set of '#define" allowing a very fine control
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* on the driver behaviour and the debug messages printed.
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* The main options are :
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* o WAVELAN_ROAMING, for the experimental roaming support.
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* o SET_PSA_CRC, to have your card correctly recognised by
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* an access point and the Point-to-Point diagnostic tool.
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* o USE_PSA_CONFIG, to read configuration from the PSA (EEprom)
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* (otherwise we always start afresh with some defaults)
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*
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* wavelan_cs.o is darn too big
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* -------------------------
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* That's true ! There is a very simple way to reduce the driver
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* object by 33% (yes !). Comment out the following line :
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* #include <linux/wireless.h>
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* Other compile options can also reduce the size of it...
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*
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* MAC address and hardware detection :
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* ----------------------------------
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* The detection code of the wavelan chech that the first 3
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* octets of the MAC address fit the company code. This type of
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* detection work well for AT&T cards (because the AT&T code is
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* hardcoded in wavelan_cs.h), but of course will fail for other
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* manufacturer.
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*
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* If you are sure that your card is derived from the wavelan,
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* here is the way to configure it :
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* 1) Get your MAC address
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* a) With your card utilities (wfreqsel, instconf, ...)
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* b) With the driver :
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* o compile the kernel with DEBUG_CONFIG_INFO enabled
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* o Boot and look the card messages
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* 2) Set your MAC code (3 octets) in MAC_ADDRESSES[][3] (wavelan_cs.h)
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* 3) Compile & verify
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* 4) Send me the MAC code - I will include it in the next version...
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*
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*/
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/* --------------------- WIRELESS EXTENSIONS --------------------- */
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/*
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* This driver is the first one to support "wireless extensions".
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* This set of extensions provide you some way to control the wireless
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* caracteristics of the hardware in a standard way and support for
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* applications for taking advantage of it (like Mobile IP).
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*
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* You will need to enable the CONFIG_NET_RADIO define in the kernel
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* configuration to enable the wireless extensions (this is the one
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* giving access to the radio network device choice).
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*
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* It might also be a good idea as well to fetch the wireless tools to
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* configure the device and play a bit.
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*/
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/* ---------------------------- FILES ---------------------------- */
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/*
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* wavelan_cs.c : The actual code for the driver - C functions
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*
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* wavelan_cs.p.h : Private header : local types / vars for the driver
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*
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* wavelan_cs.h : Description of the hardware interface & structs
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*
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* i82593.h : Description if the Ethernet controller
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*/
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/* --------------------------- HISTORY --------------------------- */
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/*
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* The history of the Wavelan drivers is as complicated as history of
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* the Wavelan itself (NCR -> AT&T -> Lucent).
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*
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* All started with Anders Klemets <klemets@paul.rutgers.edu>,
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* writting a Wavelan ISA driver for the MACH microkernel. Girish
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* Welling <welling@paul.rutgers.edu> had also worked on it.
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* Keith Moore modify this for the Pcmcia hardware.
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*
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* Robert Morris <rtm@das.harvard.edu> port these two drivers to BSDI
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* and add specific Pcmcia support (there is currently no equivalent
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* of the PCMCIA package under BSD...).
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*
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* Jim Binkley <jrb@cs.pdx.edu> port both BSDI drivers to FreeBSD.
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*
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* Bruce Janson <bruce@cs.usyd.edu.au> port the BSDI ISA driver to Linux.
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*
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* Anthony D. Joseph <adj@lcs.mit.edu> started modify Bruce driver
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* (with help of the BSDI PCMCIA driver) for PCMCIA.
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* Yunzhou Li <yunzhou@strat.iol.unh.edu> finished is work.
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* Joe Finney <joe@comp.lancs.ac.uk> patched the driver to start
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* correctly 2.00 cards (2.4 GHz with frequency selection).
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* David Hinds <dahinds@users.sourceforge.net> integrated the whole in his
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* Pcmcia package (+ bug corrections).
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*
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* I (Jean Tourrilhes - jt@hplb.hpl.hp.com) then started to make some
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* patchs to the Pcmcia driver. After, I added code in the ISA driver
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* for Wireless Extensions and full support of frequency selection
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* cards. Now, I'm doing the same to the Pcmcia driver + some
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* reorganisation.
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* Loeke Brederveld <lbrederv@wavelan.com> from Lucent has given me
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* much needed informations on the Wavelan hardware.
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*/
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/* By the way : for the copyright & legal stuff :
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* Almost everybody wrote code under GNU or BSD license (or alike),
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* and want that their original copyright remain somewhere in the
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* code (for myself, I go with the GPL).
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* Nobody want to take responsibility for anything, except the fame...
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*/
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/* --------------------------- CREDITS --------------------------- */
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/*
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* Credits:
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* Special thanks to Jan Hoogendoorn of AT&T GIS Utrecht and
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* Loeke Brederveld of Lucent for providing extremely useful
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* information about WaveLAN PCMCIA hardware
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*
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* This driver is based upon several other drivers, in particular:
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* David Hinds' Linux driver for the PCMCIA 3c589 ethernet adapter
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* Bruce Janson's Linux driver for the AT-bus WaveLAN adapter
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* Anders Klemets' PCMCIA WaveLAN adapter driver
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* Robert Morris' BSDI driver for the PCMCIA WaveLAN adapter
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*
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* Additional Credits:
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*
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* This software was originally developed under Linux 1.2.3
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* (Slackware 2.0 distribution).
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* And then under Linux 2.0.x (Debian 1.1 -> 2.2 - pcmcia 2.8.18+)
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* with an HP OmniBook 4000 and then a 5500.
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*
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* It is based on other device drivers and information either written
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* or supplied by:
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* James Ashton (jaa101@syseng.anu.edu.au),
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* Ajay Bakre (bakre@paul.rutgers.edu),
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* Donald Becker (becker@super.org),
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* Jim Binkley <jrb@cs.pdx.edu>,
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* Loeke Brederveld <lbrederv@wavelan.com>,
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* Allan Creighton (allanc@cs.su.oz.au),
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* Brent Elphick <belphick@uwaterloo.ca>,
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* Joe Finney <joe@comp.lancs.ac.uk>,
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* Matthew Geier (matthew@cs.su.oz.au),
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* Remo di Giovanni (remo@cs.su.oz.au),
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* Mark Hagan (mhagan@wtcpost.daytonoh.NCR.COM),
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* David Hinds <dahinds@users.sourceforge.net>,
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* Jan Hoogendoorn (c/o marteijn@lucent.com),
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* Bruce Janson <bruce@cs.usyd.edu.au>,
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* Anthony D. Joseph <adj@lcs.mit.edu>,
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* Anders Klemets (klemets@paul.rutgers.edu),
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* Yunzhou Li <yunzhou@strat.iol.unh.edu>,
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* Marc Meertens (mmeertens@lucent.com),
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* Keith Moore,
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* Robert Morris (rtm@das.harvard.edu),
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* Ian Parkin (ian@cs.su.oz.au),
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* John Rosenberg (johnr@cs.su.oz.au),
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* George Rossi (george@phm.gov.au),
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* Arthur Scott (arthur@cs.su.oz.au),
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* Stanislav Sinyagin <stas@isf.ru>
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* Peter Storey,
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* Jean Tourrilhes <jt@hpl.hp.com>,
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* Girish Welling (welling@paul.rutgers.edu)
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* Clark Woodworth <clark@hiway1.exit109.com>
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* Yongguang Zhang <ygz@isl.hrl.hac.com>...
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*/
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/* ------------------------- IMPROVEMENTS ------------------------- */
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/*
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* I proudly present :
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*
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* Changes made in 2.8.22 :
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* ----------------------
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* - improved wv_set_multicast_list
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* - catch spurious interrupt
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* - correct release of the device
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*
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* Changes mades in release :
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* ------------------------
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* - Reorganisation of the code, function name change
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* - Creation of private header (wavelan_cs.h)
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* - Reorganised debug messages
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* - More comments, history, ...
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* - Configure earlier (in "insert" instead of "open")
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* and do things only once
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* - mmc_init : configure the PSA if not done
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* - mmc_init : 2.00 detection better code for 2.00 init
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* - better info at startup
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* - Correct a HUGE bug (volatile & uncalibrated busy loop)
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* in wv_82593_cmd => config speedup
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* - Stop receiving & power down on close (and power up on open)
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* use "ifconfig down" & "ifconfig up ; route add -net ..."
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* - Send packets : add watchdog instead of pooling
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* - Receive : check frame wrap around & try to recover some frames
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* - wavelan_set_multicast_list : avoid reset
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* - add wireless extensions (ioctl & get_wireless_stats)
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* get/set nwid/frequency on fly, info for /proc/net/wireless
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* - Suppress useless stuff from lp (net_local), but add link
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* - More inlines
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* - Lot of others minor details & cleanups
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*
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* Changes made in second release :
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* ------------------------------
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* - Optimise wv_85893_reconfig stuff, fix potential problems
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* - Change error values for ioctl
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* - Non blocking wv_ru_stop() + call wv_reset() in case of problems
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* - Remove development printk from wavelan_watchdog()
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* - Remove of the watchdog to wavelan_close instead of wavelan_release
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* fix potential problems...
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* - Start debugging suspend stuff (but it's still a bit weird)
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* - Debug & optimize dump header/packet in Rx & Tx (debug)
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* - Use "readb" and "writeb" to be kernel 2.1 compliant
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* - Better handling of bogus interrupts
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* - Wireless extension : SETSPY and GETSPY
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* - Remove old stuff (stats - for those needing it, just ask me...)
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* - Make wireless extensions optional
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*
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* Changes made in third release :
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* -----------------------------
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* - cleanups & typos
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* - modif wireless ext (spy -> only one pointer)
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* - new private ioctl to set/get quality & level threshold
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* - Init : correct default value of level threshold for pcmcia
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* - kill watchdog in hw_reset
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* - more 2.1 support (copy_to/from_user instead of memcpy_to/fromfs)
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* - Add message level (debug stuff in /var/adm/debug & errors not
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* displayed at console and still in /var/adm/messages)
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*
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* Changes made in fourth release :
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* ------------------------------
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* - multicast support (yes !) thanks to Yongguang Zhang.
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*
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* Changes made in fifth release (2.9.0) :
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* -------------------------------------
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* - Revisited multicast code (it was mostly wrong).
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* - protect code in wv_82593_reconfig with dev->tbusy (oups !)
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*
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* Changes made in sixth release (2.9.1a) :
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* --------------------------------------
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* - Change the detection code for multi manufacturer code support
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* - Correct bug (hang kernel) in init when we were "rejecting" a card
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*
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* Changes made in seventh release (2.9.1b) :
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* ----------------------------------------
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* - Update to wireless extensions changes
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* - Silly bug in card initial configuration (psa_conf_status)
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*
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* Changes made in eigth release :
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* -----------------------------
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* - Small bug in debug code (probably not the last one...)
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* - 1.2.13 support (thanks to Clark Woodworth)
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*
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* Changes made for release in 2.9.2b :
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* ----------------------------------
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* - Level threshold is now a standard wireless extension (version 4 !)
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* - modules parameters types for kernel > 2.1.17
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* - updated man page
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* - Others cleanup from David Hinds
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*
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* Changes made for release in 2.9.5 :
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* ---------------------------------
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* - byte count stats (courtesy of David Hinds)
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* - Remove dev_tint stuff (courtesy of David Hinds)
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* - Others cleanup from David Hinds
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* - Encryption setting from Brent Elphick (thanks a lot !)
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* - 'base' to 'u_long' for the Alpha (thanks to Stanislav Sinyagin)
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*
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* Changes made for release in 2.9.6 :
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* ---------------------------------
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* - fix bug : no longuer disable watchdog in case of bogus interrupt
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* - increase timeout in config code for picky hardware
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* - mask unused bits in status (Wireless Extensions)
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*
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* Changes integrated by Justin Seger <jseger@MIT.EDU> & David Hinds :
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* -----------------------------------------------------------------
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* - Roaming "hack" from Joe Finney <joe@comp.lancs.ac.uk>
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* - PSA CRC code from Bob Gray <rgray@bald.cs.dartmouth.edu>
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* - Better initialisation of the i82593 controller
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* from Joseph K. O'Sullivan <josullvn+@cs.cmu.edu>
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*
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* Changes made for release in 3.0.10 :
|
||
|
|
* ----------------------------------
|
||
|
|
* - Fix eject "hang" of the driver under 2.2.X :
|
||
|
|
* o create wv_flush_stale_links()
|
||
|
|
* o Rename wavelan_release to wv_pcmcia_release & move up
|
||
|
|
* o move unregister_netdev to wavelan_detach()
|
||
|
|
* o wavelan_release() no longer call wavelan_detach()
|
||
|
|
* o Suppress "release" timer
|
||
|
|
* o Other cleanups & fixes
|
||
|
|
* - New MAC address in the probe
|
||
|
|
* - Reorg PSA_CRC code (endian neutral & cleaner)
|
||
|
|
* - Correct initialisation of the i82593 from Lucent manual
|
||
|
|
* - Put back the watchdog, with larger timeout
|
||
|
|
* - TRANSMIT_NO_CRC is a "normal" error, so recover from it
|
||
|
|
* from Derrick J Brashear <shadow@dementia.org>
|
||
|
|
* - Better handling of TX and RX normal failure conditions
|
||
|
|
* - #ifdef out all the roaming code
|
||
|
|
* - Add ESSID & "AP current address" ioctl stubs
|
||
|
|
* - General cleanup of the code
|
||
|
|
*
|
||
|
|
* Changes made for release in 3.0.13 :
|
||
|
|
* ----------------------------------
|
||
|
|
* - Re-enable compilation of roaming code by default, but with
|
||
|
|
* do_roaming = 0
|
||
|
|
* - Nuke `nwid=nwid^ntohs(beacon->domain_id)' in wl_roam_gather
|
||
|
|
* at the demand of John Carol Langford <jcl@gs176.sp.cs.cmu.edu>
|
||
|
|
* - Introduced WAVELAN_ROAMING_EXT for incomplete ESSID stuff.
|
||
|
|
*
|
||
|
|
* Changes made for release in 3.0.15 :
|
||
|
|
* ----------------------------------
|
||
|
|
* - Change e-mail and web page addresses
|
||
|
|
* - Watchdog timer is now correctly expressed in HZ, not in jiffies
|
||
|
|
* - Add channel number to the list of frequencies in range
|
||
|
|
* - Add the (short) list of bit-rates in range
|
||
|
|
* - Developp a new sensitivity... (sens.value & sens.fixed)
|
||
|
|
*
|
||
|
|
* Changes made for release in 3.1.2 :
|
||
|
|
* ---------------------------------
|
||
|
|
* - Fix check for root permission (break instead of exit)
|
||
|
|
* - New nwid & encoding setting (Wireless Extension 9)
|
||
|
|
*
|
||
|
|
* Changes made for release in 3.1.12 :
|
||
|
|
* ----------------------------------
|
||
|
|
* - reworked wv_82593_cmd to avoid using the IRQ handler and doing
|
||
|
|
* ugly things with interrupts.
|
||
|
|
* - Add IRQ protection in 82593_config/ru_start/ru_stop/watchdog
|
||
|
|
* - Update to new network API (softnet - 2.3.43) :
|
||
|
|
* o replace dev->tbusy (David + me)
|
||
|
|
* o replace dev->tstart (David + me)
|
||
|
|
* o remove dev->interrupt (David)
|
||
|
|
* o add SMP locking via spinlock in splxx (me)
|
||
|
|
* o add spinlock in interrupt handler (me)
|
||
|
|
* o use kernel watchdog instead of ours (me)
|
||
|
|
* o verify that all the changes make sense and work (me)
|
||
|
|
* - Re-sync kernel/pcmcia versions (not much actually)
|
||
|
|
* - A few other cleanups (David & me)...
|
||
|
|
*
|
||
|
|
* Changes made for release in 3.1.22 :
|
||
|
|
* ----------------------------------
|
||
|
|
* - Check that SMP works, remove annoying log message
|
||
|
|
*
|
||
|
|
* Changes made for release in 3.1.24 :
|
||
|
|
* ----------------------------------
|
||
|
|
* - Fix unfrequent card lockup when watchdog was reseting the hardware :
|
||
|
|
* o control first busy loop in wv_82593_cmd()
|
||
|
|
* o Extend spinlock protection in wv_hw_config()
|
||
|
|
*
|
||
|
|
* Changes made for release in 3.1.33 :
|
||
|
|
* ----------------------------------
|
||
|
|
* - Optional use new driver API for Wireless Extensions :
|
||
|
|
* o got rid of wavelan_ioctl()
|
||
|
|
* o use a bunch of iw_handler instead
|
||
|
|
*
|
||
|
|
* Changes made for release in 3.2.1 :
|
||
|
|
* ---------------------------------
|
||
|
|
* - Set dev->trans_start to avoid filling the logs
|
||
|
|
* (and generating useless abort commands)
|
||
|
|
* - Avoid deadlocks in mmc_out()/mmc_in()
|
||
|
|
*
|
||
|
|
* Wishes & dreams:
|
||
|
|
* ----------------
|
||
|
|
* - Cleanup and integrate the roaming code
|
||
|
|
* (std debug, set DomainID, decay avg and co...)
|
||
|
|
*/
|
||
|
|
|
||
|
|
/***************************** INCLUDES *****************************/
|
||
|
|
|
||
|
|
/* Linux headers that we need */
|
||
|
|
#include <linux/config.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/sched.h>
|
||
|
|
#include <linux/ptrace.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/string.h>
|
||
|
|
#include <linux/timer.h>
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
#include <linux/spinlock.h>
|
||
|
|
#include <linux/in.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
#include <linux/bitops.h>
|
||
|
|
#include <asm/uaccess.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/system.h>
|
||
|
|
|
||
|
|
#include <linux/netdevice.h>
|
||
|
|
#include <linux/etherdevice.h>
|
||
|
|
#include <linux/skbuff.h>
|
||
|
|
#include <linux/if_arp.h>
|
||
|
|
#include <linux/ioport.h>
|
||
|
|
#include <linux/fcntl.h>
|
||
|
|
#include <linux/ethtool.h>
|
||
|
|
|
||
|
|
#ifdef CONFIG_NET_RADIO
|
||
|
|
#include <linux/wireless.h> /* Wireless extensions */
|
||
|
|
#include <net/iw_handler.h> /* New driver API */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Pcmcia headers that we need */
|
||
|
|
#include <pcmcia/cs_types.h>
|
||
|
|
#include <pcmcia/cs.h>
|
||
|
|
#include <pcmcia/cistpl.h>
|
||
|
|
#include <pcmcia/cisreg.h>
|
||
|
|
#include <pcmcia/ds.h>
|
||
|
|
|
||
|
|
/* Wavelan declarations */
|
||
|
|
#include "i82593.h" /* Definitions for the Intel chip */
|
||
|
|
|
||
|
|
#include "wavelan_cs.h" /* Others bits of the hardware */
|
||
|
|
|
||
|
|
/************************** DRIVER OPTIONS **************************/
|
||
|
|
/*
|
||
|
|
* `#define' or `#undef' the following constant to change the behaviour
|
||
|
|
* of the driver...
|
||
|
|
*/
|
||
|
|
#define WAVELAN_ROAMING /* Include experimental roaming code */
|
||
|
|
#undef WAVELAN_ROAMING_EXT /* Enable roaming wireless extensions */
|
||
|
|
#undef SET_PSA_CRC /* Set the CRC in PSA (slower) */
|
||
|
|
#define USE_PSA_CONFIG /* Use info from the PSA */
|
||
|
|
#undef STRUCT_CHECK /* Verify padding of structures */
|
||
|
|
#undef EEPROM_IS_PROTECTED /* Doesn't seem to be necessary */
|
||
|
|
#define MULTICAST_AVOID /* Avoid extra multicast (I'm sceptical) */
|
||
|
|
#undef SET_MAC_ADDRESS /* Experimental */
|
||
|
|
|
||
|
|
/* Warning : these stuff will slow down the driver... */
|
||
|
|
#define WIRELESS_SPY /* Enable spying addresses */
|
||
|
|
#undef HISTOGRAM /* Enable histogram of sig level... */
|
||
|
|
|
||
|
|
/****************************** DEBUG ******************************/
|
||
|
|
|
||
|
|
#undef DEBUG_MODULE_TRACE /* Module insertion/removal */
|
||
|
|
#undef DEBUG_CALLBACK_TRACE /* Calls made by Linux */
|
||
|
|
#undef DEBUG_INTERRUPT_TRACE /* Calls to handler */
|
||
|
|
#undef DEBUG_INTERRUPT_INFO /* type of interrupt & so on */
|
||
|
|
#define DEBUG_INTERRUPT_ERROR /* problems */
|
||
|
|
#undef DEBUG_CONFIG_TRACE /* Trace the config functions */
|
||
|
|
#undef DEBUG_CONFIG_INFO /* What's going on... */
|
||
|
|
#define DEBUG_CONFIG_ERRORS /* Errors on configuration */
|
||
|
|
#undef DEBUG_TX_TRACE /* Transmission calls */
|
||
|
|
#undef DEBUG_TX_INFO /* Header of the transmitted packet */
|
||
|
|
#undef DEBUG_TX_FAIL /* Normal failure conditions */
|
||
|
|
#define DEBUG_TX_ERROR /* Unexpected conditions */
|
||
|
|
#undef DEBUG_RX_TRACE /* Transmission calls */
|
||
|
|
#undef DEBUG_RX_INFO /* Header of the transmitted packet */
|
||
|
|
#undef DEBUG_RX_FAIL /* Normal failure conditions */
|
||
|
|
#define DEBUG_RX_ERROR /* Unexpected conditions */
|
||
|
|
#undef DEBUG_PACKET_DUMP /* Dump packet on the screen */
|
||
|
|
#undef DEBUG_IOCTL_TRACE /* Misc call by Linux */
|
||
|
|
#undef DEBUG_IOCTL_INFO /* Various debug info */
|
||
|
|
#define DEBUG_IOCTL_ERROR /* What's going wrong */
|
||
|
|
#define DEBUG_BASIC_SHOW /* Show basic startup info */
|
||
|
|
#undef DEBUG_VERSION_SHOW /* Print version info */
|
||
|
|
#undef DEBUG_PSA_SHOW /* Dump psa to screen */
|
||
|
|
#undef DEBUG_MMC_SHOW /* Dump mmc to screen */
|
||
|
|
#undef DEBUG_SHOW_UNUSED /* Show also unused fields */
|
||
|
|
#undef DEBUG_I82593_SHOW /* Show i82593 status */
|
||
|
|
#undef DEBUG_DEVICE_SHOW /* Show device parameters */
|
||
|
|
|
||
|
|
/************************ CONSTANTS & MACROS ************************/
|
||
|
|
|
||
|
|
#ifdef DEBUG_VERSION_SHOW
|
||
|
|
static const char *version = "wavelan_cs.c : v24 (SMP + wireless extensions) 11/1/02\n";
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Watchdog temporisation */
|
||
|
|
#define WATCHDOG_JIFFIES (256*HZ/100)
|
||
|
|
|
||
|
|
/* Fix a bug in some old wireless extension definitions */
|
||
|
|
#ifndef IW_ESSID_MAX_SIZE
|
||
|
|
#define IW_ESSID_MAX_SIZE 32
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* ------------------------ PRIVATE IOCTL ------------------------ */
|
||
|
|
|
||
|
|
#define SIOCSIPQTHR SIOCIWFIRSTPRIV /* Set quality threshold */
|
||
|
|
#define SIOCGIPQTHR SIOCIWFIRSTPRIV + 1 /* Get quality threshold */
|
||
|
|
#define SIOCSIPROAM SIOCIWFIRSTPRIV + 2 /* Set roaming state */
|
||
|
|
#define SIOCGIPROAM SIOCIWFIRSTPRIV + 3 /* Get roaming state */
|
||
|
|
|
||
|
|
#define SIOCSIPHISTO SIOCIWFIRSTPRIV + 4 /* Set histogram ranges */
|
||
|
|
#define SIOCGIPHISTO SIOCIWFIRSTPRIV + 5 /* Get histogram values */
|
||
|
|
|
||
|
|
/*************************** WaveLAN Roaming **************************/
|
||
|
|
#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */
|
||
|
|
|
||
|
|
#define WAVELAN_ROAMING_DEBUG 0 /* 1 = Trace of handover decisions */
|
||
|
|
/* 2 = Info on each beacon rcvd... */
|
||
|
|
#define MAX_WAVEPOINTS 7 /* Max visible at one time */
|
||
|
|
#define WAVEPOINT_HISTORY 5 /* SNR sample history slow search */
|
||
|
|
#define WAVEPOINT_FAST_HISTORY 2 /* SNR sample history fast search */
|
||
|
|
#define SEARCH_THRESH_LOW 10 /* SNR to enter cell search */
|
||
|
|
#define SEARCH_THRESH_HIGH 13 /* SNR to leave cell search */
|
||
|
|
#define WAVELAN_ROAMING_DELTA 1 /* Hysteresis value (+/- SNR) */
|
||
|
|
#define CELL_TIMEOUT 2*HZ /* in jiffies */
|
||
|
|
|
||
|
|
#define FAST_CELL_SEARCH 1 /* Boolean values... */
|
||
|
|
#define NWID_PROMISC 1 /* for code clarity. */
|
||
|
|
|
||
|
|
typedef struct wavepoint_beacon
|
||
|
|
{
|
||
|
|
unsigned char dsap, /* Unused */
|
||
|
|
ssap, /* Unused */
|
||
|
|
ctrl, /* Unused */
|
||
|
|
O,U,I, /* Unused */
|
||
|
|
spec_id1, /* Unused */
|
||
|
|
spec_id2, /* Unused */
|
||
|
|
pdu_type, /* Unused */
|
||
|
|
seq; /* WavePoint beacon sequence number */
|
||
|
|
unsigned short domain_id, /* WavePoint Domain ID */
|
||
|
|
nwid; /* WavePoint NWID */
|
||
|
|
} wavepoint_beacon;
|
||
|
|
|
||
|
|
typedef struct wavepoint_history
|
||
|
|
{
|
||
|
|
unsigned short nwid; /* WavePoint's NWID */
|
||
|
|
int average_slow; /* SNR running average */
|
||
|
|
int average_fast; /* SNR running average */
|
||
|
|
unsigned char sigqual[WAVEPOINT_HISTORY]; /* Ringbuffer of recent SNR's */
|
||
|
|
unsigned char qualptr; /* Index into ringbuffer */
|
||
|
|
unsigned char last_seq; /* Last seq. no seen for WavePoint */
|
||
|
|
struct wavepoint_history *next; /* Next WavePoint in table */
|
||
|
|
struct wavepoint_history *prev; /* Previous WavePoint in table */
|
||
|
|
unsigned long last_seen; /* Time of last beacon recvd, jiffies */
|
||
|
|
} wavepoint_history;
|
||
|
|
|
||
|
|
struct wavepoint_table
|
||
|
|
{
|
||
|
|
wavepoint_history *head; /* Start of ringbuffer */
|
||
|
|
int num_wavepoints; /* No. of WavePoints visible */
|
||
|
|
unsigned char locked; /* Table lock */
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* WAVELAN_ROAMING */
|
||
|
|
|
||
|
|
/****************************** TYPES ******************************/
|
||
|
|
|
||
|
|
/* Shortcuts */
|
||
|
|
typedef struct net_device_stats en_stats;
|
||
|
|
typedef struct iw_statistics iw_stats;
|
||
|
|
typedef struct iw_quality iw_qual;
|
||
|
|
typedef struct iw_freq iw_freq;
|
||
|
|
typedef struct net_local net_local;
|
||
|
|
typedef struct timer_list timer_list;
|
||
|
|
|
||
|
|
/* Basic types */
|
||
|
|
typedef u_char mac_addr[WAVELAN_ADDR_SIZE]; /* Hardware address */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Static specific data for the interface.
|
||
|
|
*
|
||
|
|
* For each network interface, Linux keep data in two structure. "device"
|
||
|
|
* keep the generic data (same format for everybody) and "net_local" keep
|
||
|
|
* the additional specific data.
|
||
|
|
* Note that some of this specific data is in fact generic (en_stats, for
|
||
|
|
* example).
|
||
|
|
*/
|
||
|
|
struct net_local
|
||
|
|
{
|
||
|
|
dev_node_t node; /* ???? What is this stuff ???? */
|
||
|
|
struct net_device * dev; /* Reverse link... */
|
||
|
|
spinlock_t spinlock; /* Serialize access to the hardware (SMP) */
|
||
|
|
dev_link_t * link; /* pcmcia structure */
|
||
|
|
en_stats stats; /* Ethernet interface statistics */
|
||
|
|
int nresets; /* Number of hw resets */
|
||
|
|
u_char configured; /* If it is configured */
|
||
|
|
u_char reconfig_82593; /* Need to reconfigure the controller */
|
||
|
|
u_char promiscuous; /* Promiscuous mode */
|
||
|
|
u_char allmulticast; /* All Multicast mode */
|
||
|
|
int mc_count; /* Number of multicast addresses */
|
||
|
|
|
||
|
|
int stop; /* Current i82593 Stop Hit Register */
|
||
|
|
int rfp; /* Last DMA machine receive pointer */
|
||
|
|
int overrunning; /* Receiver overrun flag */
|
||
|
|
|
||
|
|
iw_stats wstats; /* Wireless specific stats */
|
||
|
|
|
||
|
|
struct iw_spy_data spy_data;
|
||
|
|
struct iw_public_data wireless_data;
|
||
|
|
|
||
|
|
#ifdef HISTOGRAM
|
||
|
|
int his_number; /* Number of intervals */
|
||
|
|
u_char his_range[16]; /* Boundaries of interval ]n-1; n] */
|
||
|
|
u_long his_sum[16]; /* Sum in interval */
|
||
|
|
#endif /* HISTOGRAM */
|
||
|
|
#ifdef WAVELAN_ROAMING
|
||
|
|
u_long domain_id; /* Domain ID we lock on for roaming */
|
||
|
|
int filter_domains; /* Check Domain ID of beacon found */
|
||
|
|
struct wavepoint_table wavepoint_table; /* Table of visible WavePoints*/
|
||
|
|
wavepoint_history * curr_point; /* Current wavepoint */
|
||
|
|
int cell_search; /* Searching for new cell? */
|
||
|
|
struct timer_list cell_timer; /* Garbage collection */
|
||
|
|
#endif /* WAVELAN_ROAMING */
|
||
|
|
void __iomem *mem;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* ----------------- MODEM MANAGEMENT SUBROUTINES ----------------- */
|
||
|
|
static inline u_char /* data */
|
||
|
|
hasr_read(u_long); /* Read the host interface : base address */
|
||
|
|
static inline void
|
||
|
|
hacr_write(u_long, /* Write to host interface : base address */
|
||
|
|
u_char), /* data */
|
||
|
|
hacr_write_slow(u_long,
|
||
|
|
u_char);
|
||
|
|
static void
|
||
|
|
psa_read(struct net_device *, /* Read the Parameter Storage Area */
|
||
|
|
int, /* offset in PSA */
|
||
|
|
u_char *, /* buffer to fill */
|
||
|
|
int), /* size to read */
|
||
|
|
psa_write(struct net_device *, /* Write to the PSA */
|
||
|
|
int, /* Offset in psa */
|
||
|
|
u_char *, /* Buffer in memory */
|
||
|
|
int); /* Length of buffer */
|
||
|
|
static inline void
|
||
|
|
mmc_out(u_long, /* Write 1 byte to the Modem Manag Control */
|
||
|
|
u_short,
|
||
|
|
u_char),
|
||
|
|
mmc_write(u_long, /* Write n bytes to the MMC */
|
||
|
|
u_char,
|
||
|
|
u_char *,
|
||
|
|
int);
|
||
|
|
static inline u_char /* Read 1 byte from the MMC */
|
||
|
|
mmc_in(u_long,
|
||
|
|
u_short);
|
||
|
|
static inline void
|
||
|
|
mmc_read(u_long, /* Read n bytes from the MMC */
|
||
|
|
u_char,
|
||
|
|
u_char *,
|
||
|
|
int),
|
||
|
|
fee_wait(u_long, /* Wait for frequency EEprom : base address */
|
||
|
|
int, /* Base delay to wait for */
|
||
|
|
int); /* Number of time to wait */
|
||
|
|
static void
|
||
|
|
fee_read(u_long, /* Read the frequency EEprom : base address */
|
||
|
|
u_short, /* destination offset */
|
||
|
|
u_short *, /* data buffer */
|
||
|
|
int); /* number of registers */
|
||
|
|
/* ---------------------- I82593 SUBROUTINES ----------------------- */
|
||
|
|
static int
|
||
|
|
wv_82593_cmd(struct net_device *, /* synchronously send a command to i82593 */
|
||
|
|
char *,
|
||
|
|
int,
|
||
|
|
int);
|
||
|
|
static inline int
|
||
|
|
wv_diag(struct net_device *); /* Diagnostique the i82593 */
|
||
|
|
static int
|
||
|
|
read_ringbuf(struct net_device *, /* Read a receive buffer */
|
||
|
|
int,
|
||
|
|
char *,
|
||
|
|
int);
|
||
|
|
static inline void
|
||
|
|
wv_82593_reconfig(struct net_device *); /* Reconfigure the controller */
|
||
|
|
/* ------------------- DEBUG & INFO SUBROUTINES ------------------- */
|
||
|
|
static inline void
|
||
|
|
wv_init_info(struct net_device *); /* display startup info */
|
||
|
|
/* ------------------- IOCTL, STATS & RECONFIG ------------------- */
|
||
|
|
static en_stats *
|
||
|
|
wavelan_get_stats(struct net_device *); /* Give stats /proc/net/dev */
|
||
|
|
static iw_stats *
|
||
|
|
wavelan_get_wireless_stats(struct net_device *);
|
||
|
|
/* ----------------------- PACKET RECEPTION ----------------------- */
|
||
|
|
static inline int
|
||
|
|
wv_start_of_frame(struct net_device *, /* Seek beggining of current frame */
|
||
|
|
int, /* end of frame */
|
||
|
|
int); /* start of buffer */
|
||
|
|
static inline void
|
||
|
|
wv_packet_read(struct net_device *, /* Read a packet from a frame */
|
||
|
|
int,
|
||
|
|
int),
|
||
|
|
wv_packet_rcv(struct net_device *); /* Read all packets waiting */
|
||
|
|
/* --------------------- PACKET TRANSMISSION --------------------- */
|
||
|
|
static inline void
|
||
|
|
wv_packet_write(struct net_device *, /* Write a packet to the Tx buffer */
|
||
|
|
void *,
|
||
|
|
short);
|
||
|
|
static int
|
||
|
|
wavelan_packet_xmit(struct sk_buff *, /* Send a packet */
|
||
|
|
struct net_device *);
|
||
|
|
/* -------------------- HARDWARE CONFIGURATION -------------------- */
|
||
|
|
static inline int
|
||
|
|
wv_mmc_init(struct net_device *); /* Initialize the modem */
|
||
|
|
static int
|
||
|
|
wv_ru_stop(struct net_device *), /* Stop the i82593 receiver unit */
|
||
|
|
wv_ru_start(struct net_device *); /* Start the i82593 receiver unit */
|
||
|
|
static int
|
||
|
|
wv_82593_config(struct net_device *); /* Configure the i82593 */
|
||
|
|
static inline int
|
||
|
|
wv_pcmcia_reset(struct net_device *); /* Reset the pcmcia interface */
|
||
|
|
static int
|
||
|
|
wv_hw_config(struct net_device *); /* Reset & configure the whole hardware */
|
||
|
|
static inline void
|
||
|
|
wv_hw_reset(struct net_device *); /* Same, + start receiver unit */
|
||
|
|
static inline int
|
||
|
|
wv_pcmcia_config(dev_link_t *); /* Configure the pcmcia interface */
|
||
|
|
static void
|
||
|
|
wv_pcmcia_release(dev_link_t *);/* Remove a device */
|
||
|
|
/* ---------------------- INTERRUPT HANDLING ---------------------- */
|
||
|
|
static irqreturn_t
|
||
|
|
wavelan_interrupt(int, /* Interrupt handler */
|
||
|
|
void *,
|
||
|
|
struct pt_regs *);
|
||
|
|
static void
|
||
|
|
wavelan_watchdog(struct net_device *); /* Transmission watchdog */
|
||
|
|
/* ------------------- CONFIGURATION CALLBACKS ------------------- */
|
||
|
|
static int
|
||
|
|
wavelan_open(struct net_device *), /* Open the device */
|
||
|
|
wavelan_close(struct net_device *); /* Close the device */
|
||
|
|
static dev_link_t *
|
||
|
|
wavelan_attach(void); /* Create a new device */
|
||
|
|
static void
|
||
|
|
wavelan_detach(dev_link_t *); /* Destroy a removed device */
|
||
|
|
static int
|
||
|
|
wavelan_event(event_t, /* Manage pcmcia events */
|
||
|
|
int,
|
||
|
|
event_callback_args_t *);
|
||
|
|
|
||
|
|
/**************************** VARIABLES ****************************/
|
||
|
|
|
||
|
|
static dev_info_t dev_info = "wavelan_cs";
|
||
|
|
static dev_link_t *dev_list = NULL; /* Linked list of devices */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Parameters that can be set with 'insmod'
|
||
|
|
* The exact syntax is 'insmod wavelan_cs.o <var>=<value>'
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Shared memory speed, in ns */
|
||
|
|
static int mem_speed = 0;
|
||
|
|
|
||
|
|
/* New module interface */
|
||
|
|
module_param(mem_speed, int, 0);
|
||
|
|
|
||
|
|
#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */
|
||
|
|
/* Enable roaming mode ? No ! Please keep this to 0 */
|
||
|
|
static int do_roaming = 0;
|
||
|
|
module_param(do_roaming, bool, 0);
|
||
|
|
#endif /* WAVELAN_ROAMING */
|
||
|
|
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
|
||
|
|
#endif /* WAVELAN_CS_P_H */
|
||
|
|
|