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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Wavelan Pcmcia driver
3 *
4 * Jean II - HPLB '96
5 *
6 * Reorganisation and extension of the driver.
7 *
8 * This file contain all definition and declarations necessary for the
9 * wavelan pcmcia driver. This file is a private header, so it should
10 * be included only on wavelan_cs.c !!!
11 */
12
13#ifndef WAVELAN_CS_P_H
14#define WAVELAN_CS_P_H
15
16/************************** DOCUMENTATION **************************/
17/*
18 * This driver provide a Linux interface to the Wavelan Pcmcia hardware
19 * The Wavelan is a product of Lucent (http://www.wavelan.com/).
20 * This division was formerly part of NCR and then AT&T.
21 * Wavelan are also distributed by DEC (RoamAbout DS)...
22 *
23 * To know how to use this driver, read the PCMCIA HOWTO.
24 * If you want to exploit the many other fonctionalities, look comments
25 * in the code...
26 *
27 * This driver is the result of the effort of many peoples (see below).
28 */
29
30/* ------------------------ SPECIFIC NOTES ------------------------ */
31/*
32 * Web page
33 * --------
34 * I try to maintain a web page with the Wireless LAN Howto at :
35 * http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Wavelan.html
36 *
37 * SMP
38 * ---
39 * We now are SMP compliant (I eventually fixed the remaining bugs).
40 * The driver has been tested on a dual P6-150 and survived my usual
41 * set of torture tests.
42 * Anyway, I spent enough time chasing interrupt re-entrancy during
43 * errors or reconfigure, and I designed the locked/unlocked sections
44 * of the driver with great care, and with the recent addition of
45 * the spinlock (thanks to the new API), we should be quite close to
46 * the truth.
47 * The SMP/IRQ locking is quite coarse and conservative (i.e. not fast),
48 * but better safe than sorry (especially at 2 Mb/s ;-).
49 *
50 * I have also looked into disabling only our interrupt on the card
51 * (via HACR) instead of all interrupts in the processor (via cli),
52 * so that other driver are not impacted, and it look like it's
53 * possible, but it's very tricky to do right (full of races). As
54 * the gain would be mostly for SMP systems, it can wait...
55 *
56 * Debugging and options
57 * ---------------------
58 * You will find below a set of '#define" allowing a very fine control
59 * on the driver behaviour and the debug messages printed.
60 * The main options are :
61 * o WAVELAN_ROAMING, for the experimental roaming support.
62 * o SET_PSA_CRC, to have your card correctly recognised by
63 * an access point and the Point-to-Point diagnostic tool.
64 * o USE_PSA_CONFIG, to read configuration from the PSA (EEprom)
65 * (otherwise we always start afresh with some defaults)
66 *
67 * wavelan_cs.o is darn too big
68 * -------------------------
69 * That's true ! There is a very simple way to reduce the driver
70 * object by 33% (yes !). Comment out the following line :
71 * #include <linux/wireless.h>
72 * Other compile options can also reduce the size of it...
73 *
74 * MAC address and hardware detection :
75 * ----------------------------------
76 * The detection code of the wavelan chech that the first 3
77 * octets of the MAC address fit the company code. This type of
78 * detection work well for AT&T cards (because the AT&T code is
79 * hardcoded in wavelan_cs.h), but of course will fail for other
80 * manufacturer.
81 *
82 * If you are sure that your card is derived from the wavelan,
83 * here is the way to configure it :
84 * 1) Get your MAC address
85 * a) With your card utilities (wfreqsel, instconf, ...)
86 * b) With the driver :
87 * o compile the kernel with DEBUG_CONFIG_INFO enabled
88 * o Boot and look the card messages
89 * 2) Set your MAC code (3 octets) in MAC_ADDRESSES[][3] (wavelan_cs.h)
90 * 3) Compile & verify
91 * 4) Send me the MAC code - I will include it in the next version...
92 *
93 */
94
95/* --------------------- WIRELESS EXTENSIONS --------------------- */
96/*
97 * This driver is the first one to support "wireless extensions".
98 * This set of extensions provide you some way to control the wireless
99 * caracteristics of the hardware in a standard way and support for
100 * applications for taking advantage of it (like Mobile IP).
101 *
Adrian Bunkd86b5e02006-01-21 00:46:55 +0100102 * It might be a good idea as well to fetch the wireless tools to
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 * configure the device and play a bit.
104 */
105
106/* ---------------------------- FILES ---------------------------- */
107/*
108 * wavelan_cs.c : The actual code for the driver - C functions
109 *
110 * wavelan_cs.p.h : Private header : local types / vars for the driver
111 *
112 * wavelan_cs.h : Description of the hardware interface & structs
113 *
114 * i82593.h : Description if the Ethernet controller
115 */
116
117/* --------------------------- HISTORY --------------------------- */
118/*
119 * The history of the Wavelan drivers is as complicated as history of
120 * the Wavelan itself (NCR -> AT&T -> Lucent).
121 *
122 * All started with Anders Klemets <klemets@paul.rutgers.edu>,
123 * writting a Wavelan ISA driver for the MACH microkernel. Girish
124 * Welling <welling@paul.rutgers.edu> had also worked on it.
125 * Keith Moore modify this for the Pcmcia hardware.
126 *
127 * Robert Morris <rtm@das.harvard.edu> port these two drivers to BSDI
128 * and add specific Pcmcia support (there is currently no equivalent
129 * of the PCMCIA package under BSD...).
130 *
131 * Jim Binkley <jrb@cs.pdx.edu> port both BSDI drivers to FreeBSD.
132 *
133 * Bruce Janson <bruce@cs.usyd.edu.au> port the BSDI ISA driver to Linux.
134 *
135 * Anthony D. Joseph <adj@lcs.mit.edu> started modify Bruce driver
136 * (with help of the BSDI PCMCIA driver) for PCMCIA.
137 * Yunzhou Li <yunzhou@strat.iol.unh.edu> finished is work.
138 * Joe Finney <joe@comp.lancs.ac.uk> patched the driver to start
139 * correctly 2.00 cards (2.4 GHz with frequency selection).
140 * David Hinds <dahinds@users.sourceforge.net> integrated the whole in his
141 * Pcmcia package (+ bug corrections).
142 *
143 * I (Jean Tourrilhes - jt@hplb.hpl.hp.com) then started to make some
144 * patchs to the Pcmcia driver. After, I added code in the ISA driver
145 * for Wireless Extensions and full support of frequency selection
146 * cards. Now, I'm doing the same to the Pcmcia driver + some
147 * reorganisation.
148 * Loeke Brederveld <lbrederv@wavelan.com> from Lucent has given me
149 * much needed informations on the Wavelan hardware.
150 */
151
152/* By the way : for the copyright & legal stuff :
153 * Almost everybody wrote code under GNU or BSD license (or alike),
154 * and want that their original copyright remain somewhere in the
155 * code (for myself, I go with the GPL).
156 * Nobody want to take responsibility for anything, except the fame...
157 */
158
159/* --------------------------- CREDITS --------------------------- */
160/*
161 * Credits:
162 * Special thanks to Jan Hoogendoorn of AT&T GIS Utrecht and
163 * Loeke Brederveld of Lucent for providing extremely useful
164 * information about WaveLAN PCMCIA hardware
165 *
166 * This driver is based upon several other drivers, in particular:
167 * David Hinds' Linux driver for the PCMCIA 3c589 ethernet adapter
168 * Bruce Janson's Linux driver for the AT-bus WaveLAN adapter
169 * Anders Klemets' PCMCIA WaveLAN adapter driver
170 * Robert Morris' BSDI driver for the PCMCIA WaveLAN adapter
171 *
172 * Additional Credits:
173 *
174 * This software was originally developed under Linux 1.2.3
175 * (Slackware 2.0 distribution).
176 * And then under Linux 2.0.x (Debian 1.1 -> 2.2 - pcmcia 2.8.18+)
177 * with an HP OmniBook 4000 and then a 5500.
178 *
179 * It is based on other device drivers and information either written
180 * or supplied by:
181 * James Ashton (jaa101@syseng.anu.edu.au),
182 * Ajay Bakre (bakre@paul.rutgers.edu),
183 * Donald Becker (becker@super.org),
184 * Jim Binkley <jrb@cs.pdx.edu>,
185 * Loeke Brederveld <lbrederv@wavelan.com>,
186 * Allan Creighton (allanc@cs.su.oz.au),
187 * Brent Elphick <belphick@uwaterloo.ca>,
188 * Joe Finney <joe@comp.lancs.ac.uk>,
189 * Matthew Geier (matthew@cs.su.oz.au),
190 * Remo di Giovanni (remo@cs.su.oz.au),
191 * Mark Hagan (mhagan@wtcpost.daytonoh.NCR.COM),
192 * David Hinds <dahinds@users.sourceforge.net>,
193 * Jan Hoogendoorn (c/o marteijn@lucent.com),
194 * Bruce Janson <bruce@cs.usyd.edu.au>,
195 * Anthony D. Joseph <adj@lcs.mit.edu>,
196 * Anders Klemets (klemets@paul.rutgers.edu),
197 * Yunzhou Li <yunzhou@strat.iol.unh.edu>,
198 * Marc Meertens (mmeertens@lucent.com),
199 * Keith Moore,
200 * Robert Morris (rtm@das.harvard.edu),
201 * Ian Parkin (ian@cs.su.oz.au),
202 * John Rosenberg (johnr@cs.su.oz.au),
203 * George Rossi (george@phm.gov.au),
204 * Arthur Scott (arthur@cs.su.oz.au),
205 * Stanislav Sinyagin <stas@isf.ru>
206 * Peter Storey,
207 * Jean Tourrilhes <jt@hpl.hp.com>,
208 * Girish Welling (welling@paul.rutgers.edu)
209 * Clark Woodworth <clark@hiway1.exit109.com>
210 * Yongguang Zhang <ygz@isl.hrl.hac.com>...
211 */
212
213/* ------------------------- IMPROVEMENTS ------------------------- */
214/*
215 * I proudly present :
216 *
217 * Changes made in 2.8.22 :
218 * ----------------------
219 * - improved wv_set_multicast_list
220 * - catch spurious interrupt
221 * - correct release of the device
222 *
223 * Changes mades in release :
224 * ------------------------
225 * - Reorganisation of the code, function name change
226 * - Creation of private header (wavelan_cs.h)
227 * - Reorganised debug messages
228 * - More comments, history, ...
229 * - Configure earlier (in "insert" instead of "open")
230 * and do things only once
231 * - mmc_init : configure the PSA if not done
232 * - mmc_init : 2.00 detection better code for 2.00 init
233 * - better info at startup
234 * - Correct a HUGE bug (volatile & uncalibrated busy loop)
235 * in wv_82593_cmd => config speedup
236 * - Stop receiving & power down on close (and power up on open)
237 * use "ifconfig down" & "ifconfig up ; route add -net ..."
238 * - Send packets : add watchdog instead of pooling
239 * - Receive : check frame wrap around & try to recover some frames
240 * - wavelan_set_multicast_list : avoid reset
241 * - add wireless extensions (ioctl & get_wireless_stats)
242 * get/set nwid/frequency on fly, info for /proc/net/wireless
243 * - Suppress useless stuff from lp (net_local), but add link
244 * - More inlines
245 * - Lot of others minor details & cleanups
246 *
247 * Changes made in second release :
248 * ------------------------------
249 * - Optimise wv_85893_reconfig stuff, fix potential problems
250 * - Change error values for ioctl
251 * - Non blocking wv_ru_stop() + call wv_reset() in case of problems
252 * - Remove development printk from wavelan_watchdog()
253 * - Remove of the watchdog to wavelan_close instead of wavelan_release
254 * fix potential problems...
255 * - Start debugging suspend stuff (but it's still a bit weird)
256 * - Debug & optimize dump header/packet in Rx & Tx (debug)
257 * - Use "readb" and "writeb" to be kernel 2.1 compliant
258 * - Better handling of bogus interrupts
259 * - Wireless extension : SETSPY and GETSPY
260 * - Remove old stuff (stats - for those needing it, just ask me...)
261 * - Make wireless extensions optional
262 *
263 * Changes made in third release :
264 * -----------------------------
265 * - cleanups & typos
266 * - modif wireless ext (spy -> only one pointer)
267 * - new private ioctl to set/get quality & level threshold
268 * - Init : correct default value of level threshold for pcmcia
269 * - kill watchdog in hw_reset
270 * - more 2.1 support (copy_to/from_user instead of memcpy_to/fromfs)
271 * - Add message level (debug stuff in /var/adm/debug & errors not
272 * displayed at console and still in /var/adm/messages)
273 *
274 * Changes made in fourth release :
275 * ------------------------------
276 * - multicast support (yes !) thanks to Yongguang Zhang.
277 *
278 * Changes made in fifth release (2.9.0) :
279 * -------------------------------------
280 * - Revisited multicast code (it was mostly wrong).
281 * - protect code in wv_82593_reconfig with dev->tbusy (oups !)
282 *
283 * Changes made in sixth release (2.9.1a) :
284 * --------------------------------------
285 * - Change the detection code for multi manufacturer code support
286 * - Correct bug (hang kernel) in init when we were "rejecting" a card
287 *
288 * Changes made in seventh release (2.9.1b) :
289 * ----------------------------------------
290 * - Update to wireless extensions changes
291 * - Silly bug in card initial configuration (psa_conf_status)
292 *
293 * Changes made in eigth release :
294 * -----------------------------
295 * - Small bug in debug code (probably not the last one...)
296 * - 1.2.13 support (thanks to Clark Woodworth)
297 *
298 * Changes made for release in 2.9.2b :
299 * ----------------------------------
300 * - Level threshold is now a standard wireless extension (version 4 !)
301 * - modules parameters types for kernel > 2.1.17
302 * - updated man page
303 * - Others cleanup from David Hinds
304 *
305 * Changes made for release in 2.9.5 :
306 * ---------------------------------
307 * - byte count stats (courtesy of David Hinds)
308 * - Remove dev_tint stuff (courtesy of David Hinds)
309 * - Others cleanup from David Hinds
310 * - Encryption setting from Brent Elphick (thanks a lot !)
311 * - 'base' to 'u_long' for the Alpha (thanks to Stanislav Sinyagin)
312 *
313 * Changes made for release in 2.9.6 :
314 * ---------------------------------
315 * - fix bug : no longuer disable watchdog in case of bogus interrupt
316 * - increase timeout in config code for picky hardware
317 * - mask unused bits in status (Wireless Extensions)
318 *
319 * Changes integrated by Justin Seger <jseger@MIT.EDU> & David Hinds :
320 * -----------------------------------------------------------------
321 * - Roaming "hack" from Joe Finney <joe@comp.lancs.ac.uk>
322 * - PSA CRC code from Bob Gray <rgray@bald.cs.dartmouth.edu>
323 * - Better initialisation of the i82593 controller
324 * from Joseph K. O'Sullivan <josullvn+@cs.cmu.edu>
325 *
326 * Changes made for release in 3.0.10 :
327 * ----------------------------------
328 * - Fix eject "hang" of the driver under 2.2.X :
329 * o create wv_flush_stale_links()
330 * o Rename wavelan_release to wv_pcmcia_release & move up
331 * o move unregister_netdev to wavelan_detach()
332 * o wavelan_release() no longer call wavelan_detach()
333 * o Suppress "release" timer
334 * o Other cleanups & fixes
335 * - New MAC address in the probe
336 * - Reorg PSA_CRC code (endian neutral & cleaner)
337 * - Correct initialisation of the i82593 from Lucent manual
338 * - Put back the watchdog, with larger timeout
339 * - TRANSMIT_NO_CRC is a "normal" error, so recover from it
340 * from Derrick J Brashear <shadow@dementia.org>
341 * - Better handling of TX and RX normal failure conditions
342 * - #ifdef out all the roaming code
343 * - Add ESSID & "AP current address" ioctl stubs
344 * - General cleanup of the code
345 *
346 * Changes made for release in 3.0.13 :
347 * ----------------------------------
348 * - Re-enable compilation of roaming code by default, but with
349 * do_roaming = 0
350 * - Nuke `nwid=nwid^ntohs(beacon->domain_id)' in wl_roam_gather
351 * at the demand of John Carol Langford <jcl@gs176.sp.cs.cmu.edu>
352 * - Introduced WAVELAN_ROAMING_EXT for incomplete ESSID stuff.
353 *
354 * Changes made for release in 3.0.15 :
355 * ----------------------------------
356 * - Change e-mail and web page addresses
357 * - Watchdog timer is now correctly expressed in HZ, not in jiffies
358 * - Add channel number to the list of frequencies in range
359 * - Add the (short) list of bit-rates in range
360 * - Developp a new sensitivity... (sens.value & sens.fixed)
361 *
362 * Changes made for release in 3.1.2 :
363 * ---------------------------------
364 * - Fix check for root permission (break instead of exit)
365 * - New nwid & encoding setting (Wireless Extension 9)
366 *
367 * Changes made for release in 3.1.12 :
368 * ----------------------------------
369 * - reworked wv_82593_cmd to avoid using the IRQ handler and doing
370 * ugly things with interrupts.
371 * - Add IRQ protection in 82593_config/ru_start/ru_stop/watchdog
372 * - Update to new network API (softnet - 2.3.43) :
373 * o replace dev->tbusy (David + me)
374 * o replace dev->tstart (David + me)
375 * o remove dev->interrupt (David)
376 * o add SMP locking via spinlock in splxx (me)
377 * o add spinlock in interrupt handler (me)
378 * o use kernel watchdog instead of ours (me)
379 * o verify that all the changes make sense and work (me)
380 * - Re-sync kernel/pcmcia versions (not much actually)
381 * - A few other cleanups (David & me)...
382 *
383 * Changes made for release in 3.1.22 :
384 * ----------------------------------
385 * - Check that SMP works, remove annoying log message
386 *
387 * Changes made for release in 3.1.24 :
388 * ----------------------------------
389 * - Fix unfrequent card lockup when watchdog was reseting the hardware :
390 * o control first busy loop in wv_82593_cmd()
391 * o Extend spinlock protection in wv_hw_config()
392 *
393 * Changes made for release in 3.1.33 :
394 * ----------------------------------
395 * - Optional use new driver API for Wireless Extensions :
396 * o got rid of wavelan_ioctl()
397 * o use a bunch of iw_handler instead
398 *
399 * Changes made for release in 3.2.1 :
400 * ---------------------------------
401 * - Set dev->trans_start to avoid filling the logs
402 * (and generating useless abort commands)
403 * - Avoid deadlocks in mmc_out()/mmc_in()
404 *
405 * Wishes & dreams:
406 * ----------------
407 * - Cleanup and integrate the roaming code
408 * (std debug, set DomainID, decay avg and co...)
409 */
410
411/***************************** INCLUDES *****************************/
412
413/* Linux headers that we need */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414#include <linux/module.h>
415#include <linux/kernel.h>
416#include <linux/init.h>
417#include <linux/sched.h>
418#include <linux/ptrace.h>
419#include <linux/slab.h>
420#include <linux/string.h>
421#include <linux/timer.h>
422#include <linux/interrupt.h>
423#include <linux/spinlock.h>
424#include <linux/in.h>
425#include <linux/delay.h>
426#include <linux/bitops.h>
427#include <asm/uaccess.h>
428#include <asm/io.h>
429#include <asm/system.h>
430
431#include <linux/netdevice.h>
432#include <linux/etherdevice.h>
433#include <linux/skbuff.h>
434#include <linux/if_arp.h>
435#include <linux/ioport.h>
436#include <linux/fcntl.h>
437#include <linux/ethtool.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438#include <linux/wireless.h> /* Wireless extensions */
439#include <net/iw_handler.h> /* New driver API */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
441/* Pcmcia headers that we need */
442#include <pcmcia/cs_types.h>
443#include <pcmcia/cs.h>
444#include <pcmcia/cistpl.h>
445#include <pcmcia/cisreg.h>
446#include <pcmcia/ds.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
448/* Wavelan declarations */
449#include "i82593.h" /* Definitions for the Intel chip */
450
451#include "wavelan_cs.h" /* Others bits of the hardware */
452
453/************************** DRIVER OPTIONS **************************/
454/*
455 * `#define' or `#undef' the following constant to change the behaviour
456 * of the driver...
457 */
458#define WAVELAN_ROAMING /* Include experimental roaming code */
459#undef WAVELAN_ROAMING_EXT /* Enable roaming wireless extensions */
460#undef SET_PSA_CRC /* Set the CRC in PSA (slower) */
461#define USE_PSA_CONFIG /* Use info from the PSA */
462#undef STRUCT_CHECK /* Verify padding of structures */
463#undef EEPROM_IS_PROTECTED /* Doesn't seem to be necessary */
464#define MULTICAST_AVOID /* Avoid extra multicast (I'm sceptical) */
465#undef SET_MAC_ADDRESS /* Experimental */
466
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467/* Warning : these stuff will slow down the driver... */
468#define WIRELESS_SPY /* Enable spying addresses */
469#undef HISTOGRAM /* Enable histogram of sig level... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470
471/****************************** DEBUG ******************************/
472
473#undef DEBUG_MODULE_TRACE /* Module insertion/removal */
474#undef DEBUG_CALLBACK_TRACE /* Calls made by Linux */
475#undef DEBUG_INTERRUPT_TRACE /* Calls to handler */
476#undef DEBUG_INTERRUPT_INFO /* type of interrupt & so on */
477#define DEBUG_INTERRUPT_ERROR /* problems */
478#undef DEBUG_CONFIG_TRACE /* Trace the config functions */
479#undef DEBUG_CONFIG_INFO /* What's going on... */
480#define DEBUG_CONFIG_ERRORS /* Errors on configuration */
481#undef DEBUG_TX_TRACE /* Transmission calls */
482#undef DEBUG_TX_INFO /* Header of the transmitted packet */
483#undef DEBUG_TX_FAIL /* Normal failure conditions */
484#define DEBUG_TX_ERROR /* Unexpected conditions */
485#undef DEBUG_RX_TRACE /* Transmission calls */
486#undef DEBUG_RX_INFO /* Header of the transmitted packet */
487#undef DEBUG_RX_FAIL /* Normal failure conditions */
488#define DEBUG_RX_ERROR /* Unexpected conditions */
489#undef DEBUG_PACKET_DUMP /* Dump packet on the screen */
490#undef DEBUG_IOCTL_TRACE /* Misc call by Linux */
491#undef DEBUG_IOCTL_INFO /* Various debug info */
492#define DEBUG_IOCTL_ERROR /* What's going wrong */
493#define DEBUG_BASIC_SHOW /* Show basic startup info */
494#undef DEBUG_VERSION_SHOW /* Print version info */
495#undef DEBUG_PSA_SHOW /* Dump psa to screen */
496#undef DEBUG_MMC_SHOW /* Dump mmc to screen */
497#undef DEBUG_SHOW_UNUSED /* Show also unused fields */
498#undef DEBUG_I82593_SHOW /* Show i82593 status */
499#undef DEBUG_DEVICE_SHOW /* Show device parameters */
500
501/************************ CONSTANTS & MACROS ************************/
502
503#ifdef DEBUG_VERSION_SHOW
504static const char *version = "wavelan_cs.c : v24 (SMP + wireless extensions) 11/1/02\n";
505#endif
506
507/* Watchdog temporisation */
508#define WATCHDOG_JIFFIES (256*HZ/100)
509
510/* Fix a bug in some old wireless extension definitions */
511#ifndef IW_ESSID_MAX_SIZE
512#define IW_ESSID_MAX_SIZE 32
513#endif
514
515/* ------------------------ PRIVATE IOCTL ------------------------ */
516
517#define SIOCSIPQTHR SIOCIWFIRSTPRIV /* Set quality threshold */
518#define SIOCGIPQTHR SIOCIWFIRSTPRIV + 1 /* Get quality threshold */
519#define SIOCSIPROAM SIOCIWFIRSTPRIV + 2 /* Set roaming state */
520#define SIOCGIPROAM SIOCIWFIRSTPRIV + 3 /* Get roaming state */
521
522#define SIOCSIPHISTO SIOCIWFIRSTPRIV + 4 /* Set histogram ranges */
523#define SIOCGIPHISTO SIOCIWFIRSTPRIV + 5 /* Get histogram values */
524
525/*************************** WaveLAN Roaming **************************/
526#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */
527
528#define WAVELAN_ROAMING_DEBUG 0 /* 1 = Trace of handover decisions */
529 /* 2 = Info on each beacon rcvd... */
530#define MAX_WAVEPOINTS 7 /* Max visible at one time */
531#define WAVEPOINT_HISTORY 5 /* SNR sample history slow search */
532#define WAVEPOINT_FAST_HISTORY 2 /* SNR sample history fast search */
533#define SEARCH_THRESH_LOW 10 /* SNR to enter cell search */
534#define SEARCH_THRESH_HIGH 13 /* SNR to leave cell search */
535#define WAVELAN_ROAMING_DELTA 1 /* Hysteresis value (+/- SNR) */
536#define CELL_TIMEOUT 2*HZ /* in jiffies */
537
538#define FAST_CELL_SEARCH 1 /* Boolean values... */
539#define NWID_PROMISC 1 /* for code clarity. */
540
541typedef struct wavepoint_beacon
542{
543 unsigned char dsap, /* Unused */
544 ssap, /* Unused */
545 ctrl, /* Unused */
546 O,U,I, /* Unused */
547 spec_id1, /* Unused */
548 spec_id2, /* Unused */
549 pdu_type, /* Unused */
550 seq; /* WavePoint beacon sequence number */
551 unsigned short domain_id, /* WavePoint Domain ID */
552 nwid; /* WavePoint NWID */
553} wavepoint_beacon;
554
555typedef struct wavepoint_history
556{
557 unsigned short nwid; /* WavePoint's NWID */
558 int average_slow; /* SNR running average */
559 int average_fast; /* SNR running average */
560 unsigned char sigqual[WAVEPOINT_HISTORY]; /* Ringbuffer of recent SNR's */
561 unsigned char qualptr; /* Index into ringbuffer */
562 unsigned char last_seq; /* Last seq. no seen for WavePoint */
563 struct wavepoint_history *next; /* Next WavePoint in table */
564 struct wavepoint_history *prev; /* Previous WavePoint in table */
565 unsigned long last_seen; /* Time of last beacon recvd, jiffies */
566} wavepoint_history;
567
568struct wavepoint_table
569{
570 wavepoint_history *head; /* Start of ringbuffer */
571 int num_wavepoints; /* No. of WavePoints visible */
572 unsigned char locked; /* Table lock */
573};
574
575#endif /* WAVELAN_ROAMING */
576
577/****************************** TYPES ******************************/
578
579/* Shortcuts */
580typedef struct net_device_stats en_stats;
581typedef struct iw_statistics iw_stats;
582typedef struct iw_quality iw_qual;
583typedef struct iw_freq iw_freq;
584typedef struct net_local net_local;
585typedef struct timer_list timer_list;
586
587/* Basic types */
588typedef u_char mac_addr[WAVELAN_ADDR_SIZE]; /* Hardware address */
589
590/*
591 * Static specific data for the interface.
592 *
593 * For each network interface, Linux keep data in two structure. "device"
594 * keep the generic data (same format for everybody) and "net_local" keep
595 * the additional specific data.
596 * Note that some of this specific data is in fact generic (en_stats, for
597 * example).
598 */
599struct net_local
600{
601 dev_node_t node; /* ???? What is this stuff ???? */
602 struct net_device * dev; /* Reverse link... */
603 spinlock_t spinlock; /* Serialize access to the hardware (SMP) */
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200604 struct pcmcia_device * link; /* pcmcia structure */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 en_stats stats; /* Ethernet interface statistics */
606 int nresets; /* Number of hw resets */
607 u_char configured; /* If it is configured */
608 u_char reconfig_82593; /* Need to reconfigure the controller */
609 u_char promiscuous; /* Promiscuous mode */
610 u_char allmulticast; /* All Multicast mode */
611 int mc_count; /* Number of multicast addresses */
612
613 int stop; /* Current i82593 Stop Hit Register */
614 int rfp; /* Last DMA machine receive pointer */
615 int overrunning; /* Receiver overrun flag */
616
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 iw_stats wstats; /* Wireless specific stats */
618
619 struct iw_spy_data spy_data;
620 struct iw_public_data wireless_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621
622#ifdef HISTOGRAM
623 int his_number; /* Number of intervals */
624 u_char his_range[16]; /* Boundaries of interval ]n-1; n] */
625 u_long his_sum[16]; /* Sum in interval */
626#endif /* HISTOGRAM */
627#ifdef WAVELAN_ROAMING
628 u_long domain_id; /* Domain ID we lock on for roaming */
629 int filter_domains; /* Check Domain ID of beacon found */
630 struct wavepoint_table wavepoint_table; /* Table of visible WavePoints*/
631 wavepoint_history * curr_point; /* Current wavepoint */
632 int cell_search; /* Searching for new cell? */
633 struct timer_list cell_timer; /* Garbage collection */
634#endif /* WAVELAN_ROAMING */
635 void __iomem *mem;
636};
637
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638/* ----------------- MODEM MANAGEMENT SUBROUTINES ----------------- */
639static inline u_char /* data */
640 hasr_read(u_long); /* Read the host interface : base address */
641static inline void
642 hacr_write(u_long, /* Write to host interface : base address */
643 u_char), /* data */
644 hacr_write_slow(u_long,
645 u_char);
646static void
647 psa_read(struct net_device *, /* Read the Parameter Storage Area */
648 int, /* offset in PSA */
649 u_char *, /* buffer to fill */
650 int), /* size to read */
651 psa_write(struct net_device *, /* Write to the PSA */
652 int, /* Offset in psa */
653 u_char *, /* Buffer in memory */
654 int); /* Length of buffer */
655static inline void
656 mmc_out(u_long, /* Write 1 byte to the Modem Manag Control */
657 u_short,
658 u_char),
659 mmc_write(u_long, /* Write n bytes to the MMC */
660 u_char,
661 u_char *,
662 int);
663static inline u_char /* Read 1 byte from the MMC */
664 mmc_in(u_long,
665 u_short);
666static inline void
667 mmc_read(u_long, /* Read n bytes from the MMC */
668 u_char,
669 u_char *,
670 int),
671 fee_wait(u_long, /* Wait for frequency EEprom : base address */
672 int, /* Base delay to wait for */
673 int); /* Number of time to wait */
674static void
675 fee_read(u_long, /* Read the frequency EEprom : base address */
676 u_short, /* destination offset */
677 u_short *, /* data buffer */
678 int); /* number of registers */
679/* ---------------------- I82593 SUBROUTINES ----------------------- */
680static int
681 wv_82593_cmd(struct net_device *, /* synchronously send a command to i82593 */
682 char *,
683 int,
684 int);
685static inline int
686 wv_diag(struct net_device *); /* Diagnostique the i82593 */
687static int
688 read_ringbuf(struct net_device *, /* Read a receive buffer */
689 int,
690 char *,
691 int);
692static inline void
693 wv_82593_reconfig(struct net_device *); /* Reconfigure the controller */
694/* ------------------- DEBUG & INFO SUBROUTINES ------------------- */
695static inline void
696 wv_init_info(struct net_device *); /* display startup info */
697/* ------------------- IOCTL, STATS & RECONFIG ------------------- */
698static en_stats *
699 wavelan_get_stats(struct net_device *); /* Give stats /proc/net/dev */
700static iw_stats *
701 wavelan_get_wireless_stats(struct net_device *);
702/* ----------------------- PACKET RECEPTION ----------------------- */
703static inline int
704 wv_start_of_frame(struct net_device *, /* Seek beggining of current frame */
705 int, /* end of frame */
706 int); /* start of buffer */
707static inline void
708 wv_packet_read(struct net_device *, /* Read a packet from a frame */
709 int,
710 int),
711 wv_packet_rcv(struct net_device *); /* Read all packets waiting */
712/* --------------------- PACKET TRANSMISSION --------------------- */
713static inline void
714 wv_packet_write(struct net_device *, /* Write a packet to the Tx buffer */
715 void *,
716 short);
717static int
718 wavelan_packet_xmit(struct sk_buff *, /* Send a packet */
719 struct net_device *);
720/* -------------------- HARDWARE CONFIGURATION -------------------- */
721static inline int
722 wv_mmc_init(struct net_device *); /* Initialize the modem */
723static int
724 wv_ru_stop(struct net_device *), /* Stop the i82593 receiver unit */
725 wv_ru_start(struct net_device *); /* Start the i82593 receiver unit */
726static int
727 wv_82593_config(struct net_device *); /* Configure the i82593 */
728static inline int
729 wv_pcmcia_reset(struct net_device *); /* Reset the pcmcia interface */
730static int
731 wv_hw_config(struct net_device *); /* Reset & configure the whole hardware */
732static inline void
733 wv_hw_reset(struct net_device *); /* Same, + start receiver unit */
734static inline int
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200735 wv_pcmcia_config(struct pcmcia_device *); /* Configure the pcmcia interface */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736static void
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200737 wv_pcmcia_release(struct pcmcia_device *);/* Remove a device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738/* ---------------------- INTERRUPT HANDLING ---------------------- */
739static irqreturn_t
740 wavelan_interrupt(int, /* Interrupt handler */
741 void *,
742 struct pt_regs *);
743static void
744 wavelan_watchdog(struct net_device *); /* Transmission watchdog */
745/* ------------------- CONFIGURATION CALLBACKS ------------------- */
746static int
747 wavelan_open(struct net_device *), /* Open the device */
748 wavelan_close(struct net_device *); /* Close the device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749static void
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100750 wavelan_detach(struct pcmcia_device *p_dev); /* Destroy a removed device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751
752/**************************** VARIABLES ****************************/
753
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754/*
755 * Parameters that can be set with 'insmod'
756 * The exact syntax is 'insmod wavelan_cs.o <var>=<value>'
757 */
758
759/* Shared memory speed, in ns */
760static int mem_speed = 0;
761
762/* New module interface */
763module_param(mem_speed, int, 0);
764
765#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */
766/* Enable roaming mode ? No ! Please keep this to 0 */
767static int do_roaming = 0;
768module_param(do_roaming, bool, 0);
769#endif /* WAVELAN_ROAMING */
770
771MODULE_LICENSE("GPL");
772
773#endif /* WAVELAN_CS_P_H */
774