aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/wavelan_cs.p.h
blob: 628192d7248f4d0c527240361da331736f83baad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
/*
 *	Wavelan Pcmcia driver
 *
 *		Jean II - HPLB '96
 *
 * Reorganisation and extension of the driver.
 *
 * This file contain all definition and declarations necessary for the
 * wavelan pcmcia driver. This file is a private header, so it should
 * be included only on wavelan_cs.c !!!
 */

#ifndef WAVELAN_CS_P_H
#define WAVELAN_CS_P_H

/************************** DOCUMENTATION **************************/
/*
 * This driver provide a Linux interface to the Wavelan Pcmcia hardware
 * The Wavelan is a product of Lucent (http://www.wavelan.com/).
 * This division was formerly part of NCR and then AT&T.
 * Wavelan are also distributed by DEC (RoamAbout DS)...
 *
 * To know how to use this driver, read the PCMCIA HOWTO.
 * If you want to exploit the many other fonctionalities, look comments
 * in the code...
 *
 * This driver is the result of the effort of many peoples (see below).
 */

/* ------------------------ SPECIFIC NOTES ------------------------ */
/*
 * Web page
 * --------
 *	I try to maintain a web page with the Wireless LAN Howto at :
 *	    http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Wavelan.html
 *
 * SMP
 * ---
 *	We now are SMP compliant (I eventually fixed the remaining bugs).
 *	The driver has been tested on a dual P6-150 and survived my usual
 *	set of torture tests.
 *	Anyway, I spent enough time chasing interrupt re-entrancy during
 *	errors or reconfigure, and I designed the locked/unlocked sections
 *	of the driver with great care, and with the recent addition of
 *	the spinlock (thanks to the new API), we should be quite close to
 *	the truth.
 *	The SMP/IRQ locking is quite coarse and conservative (i.e. not fast),
 *	but better safe than sorry (especially at 2 Mb/s ;-).
 *
 *	I have also looked into disabling only our interrupt on the card
 *	(via HACR) instead of all interrupts in the processor (via cli),
 *	so that other driver are not impacted, and it look like it's
 *	possible, but it's very tricky to do right (full of races). As
 *	the gain would be mostly for SMP systems, it can wait...
 *
 * Debugging and options
 * ---------------------
 *	You will find below a set of '#define" allowing a very fine control
 *	on the driver behaviour and the debug messages printed.
 *	The main options are :
 *	o WAVELAN_ROAMING, for the experimental roaming support.
 *	o SET_PSA_CRC, to have your card correctly recognised by
 *	  an access point and the Point-to-Point diagnostic tool.
 *	o USE_PSA_CONFIG, to read configuration from the PSA (EEprom)
 *	  (otherwise we always start afresh with some defaults)
 *
 * wavelan_cs.o is darn too big
 * -------------------------
 *	That's true ! There is a very simple way to reduce the driver
 *	object by 33% (yes !). Comment out the following line :
 *		#include <linux/wireless.h>
 *	Other compile options can also reduce the size of it...
 *
 * MAC address and hardware detection :
 * ----------------------------------
 *	The detection code of the wavelan chech that the first 3
 *	octets of the MAC address fit the company code. This type of
 *	detection work well for AT&T cards (because the AT&T code is
 *	hardcoded in wavelan_cs.h), but of course will fail for other
 *	manufacturer.
 *
 *	If you are sure that your card is derived from the wavelan,
 *	here is the way to configure it :
 *	1) Get your MAC address
 *		a) With your card utilities (wfreqsel, instconf, ...)
 *		b) With the driver :
 *			o compile the kernel with DEBUG_CONFIG_INFO enabled
 *			o Boot and look the card messages
 *	2) Set your MAC code (3 octets) in MAC_ADDRESSES[][3] (wavelan_cs.h)
 *	3) Compile & verify
 *	4) Send me the MAC code - I will include it in the next version...
 *
 */

/* --------------------- WIRELESS EXTENSIONS --------------------- */
/*
 * This driver is the first one to support "wireless extensions".
 * This set of extensions provide you some way to control the wireless
 * caracteristics of the hardware in a standard way and support for
 * applications for taking advantage of it (like Mobile IP).
 *
 * It might be a good idea as well to fetch the wireless tools to
 * configure the device and play a bit.
 */

/* ---------------------------- FILES ---------------------------- */
/*
 * wavelan_cs.c :	The actual code for the driver - C functions
 *
 * wavelan_cs.p.h :	Private header : local types / vars for the driver
 *
 * wavelan_cs.h :	Description of the hardware interface & structs
 *
 * i82593.h :		Description if the Ethernet controller
 */

/* --------------------------- HISTORY --------------------------- */
/*
 * The history of the Wavelan drivers is as complicated as history of
 * the Wavelan itself (NCR -> AT&T -> Lucent).
 *
 * All started with Anders Klemets <klemets@paul.rutgers.edu>,
 * writing a Wavelan ISA driver for the MACH microkernel. Girish
 * Welling <welling@paul.rutgers.edu> had also worked on it.
 * Keith Moore modify this for the Pcmcia hardware.
 * 
 * Robert Morris <rtm@das.harvard.edu> port these two drivers to BSDI
 * and add specific Pcmcia support (there is currently no equivalent
 * of the PCMCIA package under BSD...).
 *
 * Jim Binkley <jrb@cs.pdx.edu> port both BSDI drivers to FreeBSD.
 *
 * Bruce Janson <bruce@cs.usyd.edu.au> port the BSDI ISA driver to Linux.
 *
 * Anthony D. Joseph <adj@lcs.mit.edu> started modify Bruce driver
 * (with help of the BSDI PCMCIA driver) for PCMCIA.
 * Yunzhou Li <yunzhou@strat.iol.unh.edu> finished is work.
 * Joe Finney <joe@comp.lancs.ac.uk> patched the driver to start
 * correctly 2.00 cards (2.4 GHz with frequency selection).
 * David Hinds <dahinds@users.sourceforge.net> integrated the whole in his
 * Pcmcia package (+ bug corrections).
 *
 * I (Jean Tourrilhes - jt@hplb.hpl.hp.com) then started to make some
 * patchs to the Pcmcia driver. After, I added code in the ISA driver
 * for Wireless Extensions and full support of frequency selection
 * cards. Now, I'm doing the same to the Pcmcia driver + some
 * reorganisation.
 * Loeke Brederveld <lbrederv@wavelan.com> from Lucent has given me
 * much needed informations on the Wavelan hardware.
 */

/* By the way : for the copyright & legal stuff :
 * Almost everybody wrote code under GNU or BSD license (or alike),
 * and want that their original copyright remain somewhere in the
 * code (for myself, I go with the GPL).
 * Nobody want to take responsibility for anything, except the fame...
 */

/* --------------------------- CREDITS --------------------------- */
/*
 * Credits:
 *    Special thanks to Jan Hoogendoorn of AT&T GIS Utrecht and
 *	Loeke Brederveld of Lucent for providing extremely useful
 *	information about WaveLAN PCMCIA hardware
 *
 *    This driver is based upon several other drivers, in particular:
 *	David Hinds' Linux driver for the PCMCIA 3c589 ethernet adapter
 *	Bruce Janson's Linux driver for the AT-bus WaveLAN adapter
 *	Anders Klemets' PCMCIA WaveLAN adapter driver
 *	Robert Morris' BSDI driver for the PCMCIA WaveLAN adapter
 *
 * Additional Credits:
 *
 *    This software was originally developed under Linux 1.2.3
 *	(Slackware 2.0 distribution).
 *    And then under Linux 2.0.x (Debian 1.1 -> 2.2 - pcmcia 2.8.18+)
 *	with an HP OmniBook 4000 and then a 5500.
 *
 *    It is based on other device drivers and information either written
 *    or supplied by:
 *	James Ashton (jaa101@syseng.anu.edu.au),
 *	Ajay Bakre (bakre@paul.rutgers.edu),
 *	Donald Becker (becker@super.org),
 *	Jim Binkley <jrb@cs.pdx.edu>,
 *	Loeke Brederveld <lbrederv@wavelan.com>,
 *	Allan Creighton (allanc@cs.su.oz.au),
 *	Brent Elphick <belphick@uwaterloo.ca>,
 *	Joe Finney <joe@comp.lancs.ac.uk>,
 *	Matthew Geier (matthew@cs.su.oz.au),
 *	Remo di Giovanni (remo@cs.su.oz.au),
 *	Mark Hagan (mhagan@wtcpost.daytonoh.NCR.COM),
 *	David Hinds <dahinds@users.sourceforge.net>,
 *	Jan Hoogendoorn (c/o marteijn@lucent.com),
 *      Bruce Janson <bruce@cs.usyd.edu.au>,
 *	Anthony D. Joseph <adj@lcs.mit.edu>,
 *	Anders Klemets (klemets@paul.rutgers.edu),
 *	Yunzhou Li <yunzhou@strat.iol.unh.edu>,
 *	Marc Meertens (mmeertens@lucent.com),
 *	Keith Moore,
 *	Robert Morris (rtm@das.harvard.edu),
 *	Ian Parkin (ian@cs.su.oz.au),
 *	John Rosenberg (johnr@cs.su.oz.au),
 *	George Rossi (george@phm.gov.au),
 *	Arthur Scott (arthur@cs.su.oz.au),
 *	Stanislav Sinyagin <stas@isf.ru>
 *	Peter Storey,
 *	Jean Tourrilhes <jt@hpl.hp.com>,
 *	Girish Welling (welling@paul.rutgers.edu)
 *	Clark Woodworth <clark@hiway1.exit109.com>
 *	Yongguang Zhang <ygz@isl.hrl.hac.com>...
 */

/* ------------------------- IMPROVEMENTS ------------------------- */
/*
 * I proudly present :
 *
 * Changes made in 2.8.22 :
 * ----------------------
 *	- improved wv_set_multicast_list
 *	- catch spurious interrupt
 *	- correct release of the device
 *
 * Changes mades in release :
 * ------------------------
 *	- Reorganisation of the code, function name change
 *	- Creation of private header (wavelan_cs.h)
 *	- Reorganised debug messages
 *	- More comments, history, ...
 *	- Configure earlier (in "insert" instead of "open")
 *        and do things only once
 *	- mmc_init : configure the PSA if not done
 *	- mmc_init : 2.00 detection better code for 2.00 init
 *	- better info at startup
 *	- Correct a HUGE bug (volatile & uncalibrated busy loop)
 *	  in wv_82593_cmd => config speedup
 *	- Stop receiving & power down on close (and power up on open)
 *	  use "ifconfig down" & "ifconfig up ; route add -net ..."
 *	- Send packets : add watchdog instead of pooling
 *	- Receive : check frame wrap around & try to recover some frames
 *	- wavelan_set_multicast_list : avoid reset
 *	- add wireless extensions (ioctl & get_wireless_stats)
 *	  get/set nwid/frequency on fly, info for /proc/net/wireless
 *	- Suppress useless stuff from lp (net_local), but add link
 *	- More inlines
 *	- Lot of others minor details & cleanups
 *
 * Changes made in second release :
 * ------------------------------
 *	- Optimise wv_85893_reconfig stuff, fix potential problems
 *	- Change error values for ioctl
 *	- Non blocking wv_ru_stop() + call wv_reset() in case of problems
 *	- Remove development printk from wavelan_watchdog()
 *	- Remove of the watchdog to wavelan_close instead of wavelan_release
 *	  fix potential problems...
 *	- Start debugging suspend stuff (but it's still a bit weird)
 *	- Debug & optimize dump header/packet in Rx & Tx (debug)
 *	- Use "readb" and "writeb" to be kernel 2.1 compliant
 *	- Better handling of bogus interrupts
 *	- Wireless extension : SETSPY and GETSPY
 *	- Remove old stuff (stats - for those needing it, just ask me...)
 *	- Make wireless extensions optional
 *
 * Changes made in third release :
 * -----------------------------
 *	- cleanups & typos
 *	- modif wireless ext (spy -> only one pointer)
 *	- new private ioctl to set/get quality & level threshold
 *	- Init : correct default value of level threshold for pcmcia
 *	- kill watchdog in hw_reset
 *	- more 2.1 support (copy_to/from_user instead of memcpy_to/fromfs)
 *	- Add message level (debug stuff in /var/adm/debug & errors not
 *	  displayed at console and still in /var/adm/messages)
 *
 * Changes made in fourth release :
 * ------------------------------
 *	- multicast support (yes !) thanks to Yongguang Zhang.
 *
 * Changes made in fifth release (2.9.0) :
 * -------------------------------------
 *	- Revisited multicast code (it was mostly wrong).
 *	- protect code in wv_82593_reconfig with dev->tbusy (oups !)
 *
 * Changes made in sixth release (2.9.1a) :
 * --------------------------------------
 *	- Change the detection code for multi manufacturer code support
 *	- Correct bug (hang kernel) in init when we were "rejecting" a card 
 *
 * Changes made in seventh release (2.9.1b) :
 * ----------------------------------------
 *	- Update to wireless extensions changes
 *	- Silly bug in card initial configuration (psa_conf_status)
 *
 * Changes made in eigth release :
 * -----------------------------
 *	- Small bug in debug code (probably not the last one...)
 *	- 1.2.13 support (thanks to Clark Woodworth)
 *
 * Changes made for release in 2.9.2b :
 * ----------------------------------
 *	- Level threshold is now a standard wireless extension (version 4 !)
 *	- modules parameters types for kernel > 2.1.17
 *	- updated man page
 *	- Others cleanup from David Hinds
 *
 * Changes made for release in 2.9.5 :
 * ---------------------------------
 *	- byte count stats (courtesy of David Hinds)
 *	- Remove dev_tint stuff (courtesy of David Hinds)
 *	- Others cleanup from David Hinds
 *	- Encryption setting from Brent Elphick (thanks a lot !)
 *	- 'base' to 'u_long' for the Alpha (thanks to Stanislav Sinyagin)
 *
 * Changes made for release in 2.9.6 :
 * ---------------------------------
 *	- fix bug : no longuer disable watchdog in case of bogus interrupt
 *	- increase timeout in config code for picky hardware
 *	- mask unused bits in status (Wireless Extensions)
 *
 * Changes integrated by Justin Seger <jseger@MIT.EDU> & David Hinds :
 * -----------------------------------------------------------------
 *	- Roaming "hack" from Joe Finney <joe@comp.lancs.ac.uk>
 *	- PSA CRC code from Bob Gray <rgray@bald.cs.dartmouth.edu>
 *	- Better initialisation of the i82593 controller
 *	  from Joseph K. O'Sullivan <josullvn+@cs.cmu.edu>
 *
 * 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/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>
#include <linux/wireless.h>		/* Wireless extensions */
#include <net/iw_handler.h>		/* New driver API */

/* 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 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 */
  __be16		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) */
  struct pcmcia_device *	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 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 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 u_char			/* Read 1 byte from the MMC */
	mmc_in(u_long,
	       u_short);
static 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 void
	wv_82593_reconfig(struct net_device *);	/* Reconfigure the controller */
/* ------------------- DEBUG & INFO SUBROUTINES ------------------- */
static 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 int
	wv_start_of_frame(struct net_device *,	/* Seek beggining of current frame */
			  int,	/* end of frame */
			  int);	/* start of buffer */
static 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 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 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 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 void
	wv_hw_reset(struct net_device *);	/* Same, + start receiver unit */
static int
	wv_pcmcia_config(struct pcmcia_device *);	/* Configure the pcmcia interface */
static void
	wv_pcmcia_release(struct pcmcia_device *);/* Remove a device */
/* ---------------------- INTERRUPT HANDLING ---------------------- */
static irqreturn_t
	wavelan_interrupt(int,	/* Interrupt handler */
			  void *);
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 void
	wavelan_detach(struct pcmcia_device *p_dev);	/* Destroy a removed device */

/**************************** VARIABLES ****************************/

/*
 * 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 */