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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/wireless/wavelan_cs.p.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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1/*
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 *
102 * You will need to enable the CONFIG_NET_RADIO define in the kernel
103 * configuration to enable the wireless extensions (this is the one
104 * giving access to the radio network device choice).
105 *
106 * It might also be a good idea as well to fetch the wireless tools to
107 * configure the device and play a bit.
108 */
109
110/* ---------------------------- FILES ---------------------------- */
111/*
112 * wavelan_cs.c : The actual code for the driver - C functions
113 *
114 * wavelan_cs.p.h : Private header : local types / vars for the driver
115 *
116 * wavelan_cs.h : Description of the hardware interface & structs
117 *
118 * i82593.h : Description if the Ethernet controller
119 */
120
121/* --------------------------- HISTORY --------------------------- */
122/*
123 * The history of the Wavelan drivers is as complicated as history of
124 * the Wavelan itself (NCR -> AT&T -> Lucent).
125 *
126 * All started with Anders Klemets <klemets@paul.rutgers.edu>,
127 * writting a Wavelan ISA driver for the MACH microkernel. Girish
128 * Welling <welling@paul.rutgers.edu> had also worked on it.
129 * Keith Moore modify this for the Pcmcia hardware.
130 *
131 * Robert Morris <rtm@das.harvard.edu> port these two drivers to BSDI
132 * and add specific Pcmcia support (there is currently no equivalent
133 * of the PCMCIA package under BSD...).
134 *
135 * Jim Binkley <jrb@cs.pdx.edu> port both BSDI drivers to FreeBSD.
136 *
137 * Bruce Janson <bruce@cs.usyd.edu.au> port the BSDI ISA driver to Linux.
138 *
139 * Anthony D. Joseph <adj@lcs.mit.edu> started modify Bruce driver
140 * (with help of the BSDI PCMCIA driver) for PCMCIA.
141 * Yunzhou Li <yunzhou@strat.iol.unh.edu> finished is work.
142 * Joe Finney <joe@comp.lancs.ac.uk> patched the driver to start
143 * correctly 2.00 cards (2.4 GHz with frequency selection).
144 * David Hinds <dahinds@users.sourceforge.net> integrated the whole in his
145 * Pcmcia package (+ bug corrections).
146 *
147 * I (Jean Tourrilhes - jt@hplb.hpl.hp.com) then started to make some
148 * patchs to the Pcmcia driver. After, I added code in the ISA driver
149 * for Wireless Extensions and full support of frequency selection
150 * cards. Now, I'm doing the same to the Pcmcia driver + some
151 * reorganisation.
152 * Loeke Brederveld <lbrederv@wavelan.com> from Lucent has given me
153 * much needed informations on the Wavelan hardware.
154 */
155
156/* By the way : for the copyright & legal stuff :
157 * Almost everybody wrote code under GNU or BSD license (or alike),
158 * and want that their original copyright remain somewhere in the
159 * code (for myself, I go with the GPL).
160 * Nobody want to take responsibility for anything, except the fame...
161 */
162
163/* --------------------------- CREDITS --------------------------- */
164/*
165 * Credits:
166 * Special thanks to Jan Hoogendoorn of AT&T GIS Utrecht and
167 * Loeke Brederveld of Lucent for providing extremely useful
168 * information about WaveLAN PCMCIA hardware
169 *
170 * This driver is based upon several other drivers, in particular:
171 * David Hinds' Linux driver for the PCMCIA 3c589 ethernet adapter
172 * Bruce Janson's Linux driver for the AT-bus WaveLAN adapter
173 * Anders Klemets' PCMCIA WaveLAN adapter driver
174 * Robert Morris' BSDI driver for the PCMCIA WaveLAN adapter
175 *
176 * Additional Credits:
177 *
178 * This software was originally developed under Linux 1.2.3
179 * (Slackware 2.0 distribution).
180 * And then under Linux 2.0.x (Debian 1.1 -> 2.2 - pcmcia 2.8.18+)
181 * with an HP OmniBook 4000 and then a 5500.
182 *
183 * It is based on other device drivers and information either written
184 * or supplied by:
185 * James Ashton (jaa101@syseng.anu.edu.au),
186 * Ajay Bakre (bakre@paul.rutgers.edu),
187 * Donald Becker (becker@super.org),
188 * Jim Binkley <jrb@cs.pdx.edu>,
189 * Loeke Brederveld <lbrederv@wavelan.com>,
190 * Allan Creighton (allanc@cs.su.oz.au),
191 * Brent Elphick <belphick@uwaterloo.ca>,
192 * Joe Finney <joe@comp.lancs.ac.uk>,
193 * Matthew Geier (matthew@cs.su.oz.au),
194 * Remo di Giovanni (remo@cs.su.oz.au),
195 * Mark Hagan (mhagan@wtcpost.daytonoh.NCR.COM),
196 * David Hinds <dahinds@users.sourceforge.net>,
197 * Jan Hoogendoorn (c/o marteijn@lucent.com),
198 * Bruce Janson <bruce@cs.usyd.edu.au>,
199 * Anthony D. Joseph <adj@lcs.mit.edu>,
200 * Anders Klemets (klemets@paul.rutgers.edu),
201 * Yunzhou Li <yunzhou@strat.iol.unh.edu>,
202 * Marc Meertens (mmeertens@lucent.com),
203 * Keith Moore,
204 * Robert Morris (rtm@das.harvard.edu),
205 * Ian Parkin (ian@cs.su.oz.au),
206 * John Rosenberg (johnr@cs.su.oz.au),
207 * George Rossi (george@phm.gov.au),
208 * Arthur Scott (arthur@cs.su.oz.au),
209 * Stanislav Sinyagin <stas@isf.ru>
210 * Peter Storey,
211 * Jean Tourrilhes <jt@hpl.hp.com>,
212 * Girish Welling (welling@paul.rutgers.edu)
213 * Clark Woodworth <clark@hiway1.exit109.com>
214 * Yongguang Zhang <ygz@isl.hrl.hac.com>...
215 */
216
217/* ------------------------- IMPROVEMENTS ------------------------- */
218/*
219 * I proudly present :
220 *
221 * Changes made in 2.8.22 :
222 * ----------------------
223 * - improved wv_set_multicast_list
224 * - catch spurious interrupt
225 * - correct release of the device
226 *
227 * Changes mades in release :
228 * ------------------------
229 * - Reorganisation of the code, function name change
230 * - Creation of private header (wavelan_cs.h)
231 * - Reorganised debug messages
232 * - More comments, history, ...
233 * - Configure earlier (in "insert" instead of "open")
234 * and do things only once
235 * - mmc_init : configure the PSA if not done
236 * - mmc_init : 2.00 detection better code for 2.00 init
237 * - better info at startup
238 * - Correct a HUGE bug (volatile & uncalibrated busy loop)
239 * in wv_82593_cmd => config speedup
240 * - Stop receiving & power down on close (and power up on open)
241 * use "ifconfig down" & "ifconfig up ; route add -net ..."
242 * - Send packets : add watchdog instead of pooling
243 * - Receive : check frame wrap around & try to recover some frames
244 * - wavelan_set_multicast_list : avoid reset
245 * - add wireless extensions (ioctl & get_wireless_stats)
246 * get/set nwid/frequency on fly, info for /proc/net/wireless
247 * - Suppress useless stuff from lp (net_local), but add link
248 * - More inlines
249 * - Lot of others minor details & cleanups
250 *
251 * Changes made in second release :
252 * ------------------------------
253 * - Optimise wv_85893_reconfig stuff, fix potential problems
254 * - Change error values for ioctl
255 * - Non blocking wv_ru_stop() + call wv_reset() in case of problems
256 * - Remove development printk from wavelan_watchdog()
257 * - Remove of the watchdog to wavelan_close instead of wavelan_release
258 * fix potential problems...
259 * - Start debugging suspend stuff (but it's still a bit weird)
260 * - Debug & optimize dump header/packet in Rx & Tx (debug)
261 * - Use "readb" and "writeb" to be kernel 2.1 compliant
262 * - Better handling of bogus interrupts
263 * - Wireless extension : SETSPY and GETSPY
264 * - Remove old stuff (stats - for those needing it, just ask me...)
265 * - Make wireless extensions optional
266 *
267 * Changes made in third release :
268 * -----------------------------
269 * - cleanups & typos
270 * - modif wireless ext (spy -> only one pointer)
271 * - new private ioctl to set/get quality & level threshold
272 * - Init : correct default value of level threshold for pcmcia
273 * - kill watchdog in hw_reset
274 * - more 2.1 support (copy_to/from_user instead of memcpy_to/fromfs)
275 * - Add message level (debug stuff in /var/adm/debug & errors not
276 * displayed at console and still in /var/adm/messages)
277 *
278 * Changes made in fourth release :
279 * ------------------------------
280 * - multicast support (yes !) thanks to Yongguang Zhang.
281 *
282 * Changes made in fifth release (2.9.0) :
283 * -------------------------------------
284 * - Revisited multicast code (it was mostly wrong).
285 * - protect code in wv_82593_reconfig with dev->tbusy (oups !)
286 *
287 * Changes made in sixth release (2.9.1a) :
288 * --------------------------------------
289 * - Change the detection code for multi manufacturer code support
290 * - Correct bug (hang kernel) in init when we were "rejecting" a card
291 *
292 * Changes made in seventh release (2.9.1b) :
293 * ----------------------------------------
294 * - Update to wireless extensions changes
295 * - Silly bug in card initial configuration (psa_conf_status)
296 *
297 * Changes made in eigth release :
298 * -----------------------------
299 * - Small bug in debug code (probably not the last one...)
300 * - 1.2.13 support (thanks to Clark Woodworth)
301 *
302 * Changes made for release in 2.9.2b :
303 * ----------------------------------
304 * - Level threshold is now a standard wireless extension (version 4 !)
305 * - modules parameters types for kernel > 2.1.17
306 * - updated man page
307 * - Others cleanup from David Hinds
308 *
309 * Changes made for release in 2.9.5 :
310 * ---------------------------------
311 * - byte count stats (courtesy of David Hinds)
312 * - Remove dev_tint stuff (courtesy of David Hinds)
313 * - Others cleanup from David Hinds
314 * - Encryption setting from Brent Elphick (thanks a lot !)
315 * - 'base' to 'u_long' for the Alpha (thanks to Stanislav Sinyagin)
316 *
317 * Changes made for release in 2.9.6 :
318 * ---------------------------------
319 * - fix bug : no longuer disable watchdog in case of bogus interrupt
320 * - increase timeout in config code for picky hardware
321 * - mask unused bits in status (Wireless Extensions)
322 *
323 * Changes integrated by Justin Seger <jseger@MIT.EDU> & David Hinds :
324 * -----------------------------------------------------------------
325 * - Roaming "hack" from Joe Finney <joe@comp.lancs.ac.uk>
326 * - PSA CRC code from Bob Gray <rgray@bald.cs.dartmouth.edu>
327 * - Better initialisation of the i82593 controller
328 * from Joseph K. O'Sullivan <josullvn+@cs.cmu.edu>
329 *
330 * Changes made for release in 3.0.10 :
331 * ----------------------------------
332 * - Fix eject "hang" of the driver under 2.2.X :
333 * o create wv_flush_stale_links()
334 * o Rename wavelan_release to wv_pcmcia_release & move up
335 * o move unregister_netdev to wavelan_detach()
336 * o wavelan_release() no longer call wavelan_detach()
337 * o Suppress "release" timer
338 * o Other cleanups & fixes
339 * - New MAC address in the probe
340 * - Reorg PSA_CRC code (endian neutral & cleaner)
341 * - Correct initialisation of the i82593 from Lucent manual
342 * - Put back the watchdog, with larger timeout
343 * - TRANSMIT_NO_CRC is a "normal" error, so recover from it
344 * from Derrick J Brashear <shadow@dementia.org>
345 * - Better handling of TX and RX normal failure conditions
346 * - #ifdef out all the roaming code
347 * - Add ESSID & "AP current address" ioctl stubs
348 * - General cleanup of the code
349 *
350 * Changes made for release in 3.0.13 :
351 * ----------------------------------
352 * - Re-enable compilation of roaming code by default, but with
353 * do_roaming = 0
354 * - Nuke `nwid=nwid^ntohs(beacon->domain_id)' in wl_roam_gather
355 * at the demand of John Carol Langford <jcl@gs176.sp.cs.cmu.edu>
356 * - Introduced WAVELAN_ROAMING_EXT for incomplete ESSID stuff.
357 *
358 * Changes made for release in 3.0.15 :
359 * ----------------------------------
360 * - Change e-mail and web page addresses
361 * - Watchdog timer is now correctly expressed in HZ, not in jiffies
362 * - Add channel number to the list of frequencies in range
363 * - Add the (short) list of bit-rates in range
364 * - Developp a new sensitivity... (sens.value & sens.fixed)
365 *
366 * Changes made for release in 3.1.2 :
367 * ---------------------------------
368 * - Fix check for root permission (break instead of exit)
369 * - New nwid & encoding setting (Wireless Extension 9)
370 *
371 * Changes made for release in 3.1.12 :
372 * ----------------------------------
373 * - reworked wv_82593_cmd to avoid using the IRQ handler and doing
374 * ugly things with interrupts.
375 * - Add IRQ protection in 82593_config/ru_start/ru_stop/watchdog
376 * - Update to new network API (softnet - 2.3.43) :
377 * o replace dev->tbusy (David + me)
378 * o replace dev->tstart (David + me)
379 * o remove dev->interrupt (David)
380 * o add SMP locking via spinlock in splxx (me)
381 * o add spinlock in interrupt handler (me)
382 * o use kernel watchdog instead of ours (me)
383 * o verify that all the changes make sense and work (me)
384 * - Re-sync kernel/pcmcia versions (not much actually)
385 * - A few other cleanups (David & me)...
386 *
387 * Changes made for release in 3.1.22 :
388 * ----------------------------------
389 * - Check that SMP works, remove annoying log message
390 *
391 * Changes made for release in 3.1.24 :
392 * ----------------------------------
393 * - Fix unfrequent card lockup when watchdog was reseting the hardware :
394 * o control first busy loop in wv_82593_cmd()
395 * o Extend spinlock protection in wv_hw_config()
396 *
397 * Changes made for release in 3.1.33 :
398 * ----------------------------------
399 * - Optional use new driver API for Wireless Extensions :
400 * o got rid of wavelan_ioctl()
401 * o use a bunch of iw_handler instead
402 *
403 * Changes made for release in 3.2.1 :
404 * ---------------------------------
405 * - Set dev->trans_start to avoid filling the logs
406 * (and generating useless abort commands)
407 * - Avoid deadlocks in mmc_out()/mmc_in()
408 *
409 * Wishes & dreams:
410 * ----------------
411 * - Cleanup and integrate the roaming code
412 * (std debug, set DomainID, decay avg and co...)
413 */
414
415/***************************** INCLUDES *****************************/
416
417/* Linux headers that we need */
418#include <linux/config.h>
419#include <linux/module.h>
420#include <linux/kernel.h>
421#include <linux/init.h>
422#include <linux/sched.h>
423#include <linux/ptrace.h>
424#include <linux/slab.h>
425#include <linux/string.h>
426#include <linux/timer.h>
427#include <linux/interrupt.h>
428#include <linux/spinlock.h>
429#include <linux/in.h>
430#include <linux/delay.h>
431#include <linux/bitops.h>
432#include <asm/uaccess.h>
433#include <asm/io.h>
434#include <asm/system.h>
435
436#include <linux/netdevice.h>
437#include <linux/etherdevice.h>
438#include <linux/skbuff.h>
439#include <linux/if_arp.h>
440#include <linux/ioport.h>
441#include <linux/fcntl.h>
442#include <linux/ethtool.h>
443
444#ifdef CONFIG_NET_RADIO
445#include <linux/wireless.h> /* Wireless extensions */
446#include <net/iw_handler.h> /* New driver API */
447#endif
448
449/* Pcmcia headers that we need */
450#include <pcmcia/cs_types.h>
451#include <pcmcia/cs.h>
452#include <pcmcia/cistpl.h>
453#include <pcmcia/cisreg.h>
454#include <pcmcia/ds.h>
455#include <pcmcia/version.h>
456
457/* Wavelan declarations */
458#include "i82593.h" /* Definitions for the Intel chip */
459
460#include "wavelan_cs.h" /* Others bits of the hardware */
461
462/************************** DRIVER OPTIONS **************************/
463/*
464 * `#define' or `#undef' the following constant to change the behaviour
465 * of the driver...
466 */
467#define WAVELAN_ROAMING /* Include experimental roaming code */
468#undef WAVELAN_ROAMING_EXT /* Enable roaming wireless extensions */
469#undef SET_PSA_CRC /* Set the CRC in PSA (slower) */
470#define USE_PSA_CONFIG /* Use info from the PSA */
471#undef STRUCT_CHECK /* Verify padding of structures */
472#undef EEPROM_IS_PROTECTED /* Doesn't seem to be necessary */
473#define MULTICAST_AVOID /* Avoid extra multicast (I'm sceptical) */
474#undef SET_MAC_ADDRESS /* Experimental */
475
476#ifdef WIRELESS_EXT /* If wireless extension exist in the kernel */
477/* Warning : these stuff will slow down the driver... */
478#define WIRELESS_SPY /* Enable spying addresses */
479#undef HISTOGRAM /* Enable histogram of sig level... */
480#endif
481
482/****************************** DEBUG ******************************/
483
484#undef DEBUG_MODULE_TRACE /* Module insertion/removal */
485#undef DEBUG_CALLBACK_TRACE /* Calls made by Linux */
486#undef DEBUG_INTERRUPT_TRACE /* Calls to handler */
487#undef DEBUG_INTERRUPT_INFO /* type of interrupt & so on */
488#define DEBUG_INTERRUPT_ERROR /* problems */
489#undef DEBUG_CONFIG_TRACE /* Trace the config functions */
490#undef DEBUG_CONFIG_INFO /* What's going on... */
491#define DEBUG_CONFIG_ERRORS /* Errors on configuration */
492#undef DEBUG_TX_TRACE /* Transmission calls */
493#undef DEBUG_TX_INFO /* Header of the transmitted packet */
494#undef DEBUG_TX_FAIL /* Normal failure conditions */
495#define DEBUG_TX_ERROR /* Unexpected conditions */
496#undef DEBUG_RX_TRACE /* Transmission calls */
497#undef DEBUG_RX_INFO /* Header of the transmitted packet */
498#undef DEBUG_RX_FAIL /* Normal failure conditions */
499#define DEBUG_RX_ERROR /* Unexpected conditions */
500#undef DEBUG_PACKET_DUMP /* Dump packet on the screen */
501#undef DEBUG_IOCTL_TRACE /* Misc call by Linux */
502#undef DEBUG_IOCTL_INFO /* Various debug info */
503#define DEBUG_IOCTL_ERROR /* What's going wrong */
504#define DEBUG_BASIC_SHOW /* Show basic startup info */
505#undef DEBUG_VERSION_SHOW /* Print version info */
506#undef DEBUG_PSA_SHOW /* Dump psa to screen */
507#undef DEBUG_MMC_SHOW /* Dump mmc to screen */
508#undef DEBUG_SHOW_UNUSED /* Show also unused fields */
509#undef DEBUG_I82593_SHOW /* Show i82593 status */
510#undef DEBUG_DEVICE_SHOW /* Show device parameters */
511
512/************************ CONSTANTS & MACROS ************************/
513
514#ifdef DEBUG_VERSION_SHOW
515static const char *version = "wavelan_cs.c : v24 (SMP + wireless extensions) 11/1/02\n";
516#endif
517
518/* Watchdog temporisation */
519#define WATCHDOG_JIFFIES (256*HZ/100)
520
521/* Fix a bug in some old wireless extension definitions */
522#ifndef IW_ESSID_MAX_SIZE
523#define IW_ESSID_MAX_SIZE 32
524#endif
525
526/* ------------------------ PRIVATE IOCTL ------------------------ */
527
528#define SIOCSIPQTHR SIOCIWFIRSTPRIV /* Set quality threshold */
529#define SIOCGIPQTHR SIOCIWFIRSTPRIV + 1 /* Get quality threshold */
530#define SIOCSIPROAM SIOCIWFIRSTPRIV + 2 /* Set roaming state */
531#define SIOCGIPROAM SIOCIWFIRSTPRIV + 3 /* Get roaming state */
532
533#define SIOCSIPHISTO SIOCIWFIRSTPRIV + 4 /* Set histogram ranges */
534#define SIOCGIPHISTO SIOCIWFIRSTPRIV + 5 /* Get histogram values */
535
536/*************************** WaveLAN Roaming **************************/
537#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */
538
539#define WAVELAN_ROAMING_DEBUG 0 /* 1 = Trace of handover decisions */
540 /* 2 = Info on each beacon rcvd... */
541#define MAX_WAVEPOINTS 7 /* Max visible at one time */
542#define WAVEPOINT_HISTORY 5 /* SNR sample history slow search */
543#define WAVEPOINT_FAST_HISTORY 2 /* SNR sample history fast search */
544#define SEARCH_THRESH_LOW 10 /* SNR to enter cell search */
545#define SEARCH_THRESH_HIGH 13 /* SNR to leave cell search */
546#define WAVELAN_ROAMING_DELTA 1 /* Hysteresis value (+/- SNR) */
547#define CELL_TIMEOUT 2*HZ /* in jiffies */
548
549#define FAST_CELL_SEARCH 1 /* Boolean values... */
550#define NWID_PROMISC 1 /* for code clarity. */
551
552typedef struct wavepoint_beacon
553{
554 unsigned char dsap, /* Unused */
555 ssap, /* Unused */
556 ctrl, /* Unused */
557 O,U,I, /* Unused */
558 spec_id1, /* Unused */
559 spec_id2, /* Unused */
560 pdu_type, /* Unused */
561 seq; /* WavePoint beacon sequence number */
562 unsigned short domain_id, /* WavePoint Domain ID */
563 nwid; /* WavePoint NWID */
564} wavepoint_beacon;
565
566typedef struct wavepoint_history
567{
568 unsigned short nwid; /* WavePoint's NWID */
569 int average_slow; /* SNR running average */
570 int average_fast; /* SNR running average */
571 unsigned char sigqual[WAVEPOINT_HISTORY]; /* Ringbuffer of recent SNR's */
572 unsigned char qualptr; /* Index into ringbuffer */
573 unsigned char last_seq; /* Last seq. no seen for WavePoint */
574 struct wavepoint_history *next; /* Next WavePoint in table */
575 struct wavepoint_history *prev; /* Previous WavePoint in table */
576 unsigned long last_seen; /* Time of last beacon recvd, jiffies */
577} wavepoint_history;
578
579struct wavepoint_table
580{
581 wavepoint_history *head; /* Start of ringbuffer */
582 int num_wavepoints; /* No. of WavePoints visible */
583 unsigned char locked; /* Table lock */
584};
585
586#endif /* WAVELAN_ROAMING */
587
588/****************************** TYPES ******************************/
589
590/* Shortcuts */
591typedef struct net_device_stats en_stats;
592typedef struct iw_statistics iw_stats;
593typedef struct iw_quality iw_qual;
594typedef struct iw_freq iw_freq;
595typedef struct net_local net_local;
596typedef struct timer_list timer_list;
597
598/* Basic types */
599typedef u_char mac_addr[WAVELAN_ADDR_SIZE]; /* Hardware address */
600
601/*
602 * Static specific data for the interface.
603 *
604 * For each network interface, Linux keep data in two structure. "device"
605 * keep the generic data (same format for everybody) and "net_local" keep
606 * the additional specific data.
607 * Note that some of this specific data is in fact generic (en_stats, for
608 * example).
609 */
610struct net_local
611{
612 dev_node_t node; /* ???? What is this stuff ???? */
613 struct net_device * dev; /* Reverse link... */
614 spinlock_t spinlock; /* Serialize access to the hardware (SMP) */
615 dev_link_t * link; /* pcmcia structure */
616 en_stats stats; /* Ethernet interface statistics */
617 int nresets; /* Number of hw resets */
618 u_char configured; /* If it is configured */
619 u_char reconfig_82593; /* Need to reconfigure the controller */
620 u_char promiscuous; /* Promiscuous mode */
621 u_char allmulticast; /* All Multicast mode */
622 int mc_count; /* Number of multicast addresses */
623
624 int stop; /* Current i82593 Stop Hit Register */
625 int rfp; /* Last DMA machine receive pointer */
626 int overrunning; /* Receiver overrun flag */
627
628#ifdef WIRELESS_EXT
629 iw_stats wstats; /* Wireless specific stats */
630
631 struct iw_spy_data spy_data;
632 struct iw_public_data wireless_data;
633#endif
634
635#ifdef HISTOGRAM
636 int his_number; /* Number of intervals */
637 u_char his_range[16]; /* Boundaries of interval ]n-1; n] */
638 u_long his_sum[16]; /* Sum in interval */
639#endif /* HISTOGRAM */
640#ifdef WAVELAN_ROAMING
641 u_long domain_id; /* Domain ID we lock on for roaming */
642 int filter_domains; /* Check Domain ID of beacon found */
643 struct wavepoint_table wavepoint_table; /* Table of visible WavePoints*/
644 wavepoint_history * curr_point; /* Current wavepoint */
645 int cell_search; /* Searching for new cell? */
646 struct timer_list cell_timer; /* Garbage collection */
647#endif /* WAVELAN_ROAMING */
648 void __iomem *mem;
649};
650
651/**************************** PROTOTYPES ****************************/
652
653#ifdef WAVELAN_ROAMING
654/* ---------------------- ROAMING SUBROUTINES -----------------------*/
655
656wavepoint_history *wl_roam_check(unsigned short nwid, net_local *lp);
657wavepoint_history *wl_new_wavepoint(unsigned short nwid, unsigned char seq, net_local *lp);
658void wl_del_wavepoint(wavepoint_history *wavepoint, net_local *lp);
659void wl_cell_expiry(unsigned long data);
660wavepoint_history *wl_best_sigqual(int fast_search, net_local *lp);
661void wl_update_history(wavepoint_history *wavepoint, unsigned char sigqual, unsigned char seq);
662void wv_roam_handover(wavepoint_history *wavepoint, net_local *lp);
663void wv_nwid_filter(unsigned char mode, net_local *lp);
664void wv_roam_init(struct net_device *dev);
665void wv_roam_cleanup(struct net_device *dev);
666#endif /* WAVELAN_ROAMING */
667
668/* ----------------- MODEM MANAGEMENT SUBROUTINES ----------------- */
669static inline u_char /* data */
670 hasr_read(u_long); /* Read the host interface : base address */
671static inline void
672 hacr_write(u_long, /* Write to host interface : base address */
673 u_char), /* data */
674 hacr_write_slow(u_long,
675 u_char);
676static void
677 psa_read(struct net_device *, /* Read the Parameter Storage Area */
678 int, /* offset in PSA */
679 u_char *, /* buffer to fill */
680 int), /* size to read */
681 psa_write(struct net_device *, /* Write to the PSA */
682 int, /* Offset in psa */
683 u_char *, /* Buffer in memory */
684 int); /* Length of buffer */
685static inline void
686 mmc_out(u_long, /* Write 1 byte to the Modem Manag Control */
687 u_short,
688 u_char),
689 mmc_write(u_long, /* Write n bytes to the MMC */
690 u_char,
691 u_char *,
692 int);
693static inline u_char /* Read 1 byte from the MMC */
694 mmc_in(u_long,
695 u_short);
696static inline void
697 mmc_read(u_long, /* Read n bytes from the MMC */
698 u_char,
699 u_char *,
700 int),
701 fee_wait(u_long, /* Wait for frequency EEprom : base address */
702 int, /* Base delay to wait for */
703 int); /* Number of time to wait */
704static void
705 fee_read(u_long, /* Read the frequency EEprom : base address */
706 u_short, /* destination offset */
707 u_short *, /* data buffer */
708 int); /* number of registers */
709/* ---------------------- I82593 SUBROUTINES ----------------------- */
710static int
711 wv_82593_cmd(struct net_device *, /* synchronously send a command to i82593 */
712 char *,
713 int,
714 int);
715static inline int
716 wv_diag(struct net_device *); /* Diagnostique the i82593 */
717static int
718 read_ringbuf(struct net_device *, /* Read a receive buffer */
719 int,
720 char *,
721 int);
722static inline void
723 wv_82593_reconfig(struct net_device *); /* Reconfigure the controller */
724/* ------------------- DEBUG & INFO SUBROUTINES ------------------- */
725static inline void
726 wv_init_info(struct net_device *); /* display startup info */
727/* ------------------- IOCTL, STATS & RECONFIG ------------------- */
728static en_stats *
729 wavelan_get_stats(struct net_device *); /* Give stats /proc/net/dev */
730static iw_stats *
731 wavelan_get_wireless_stats(struct net_device *);
732/* ----------------------- PACKET RECEPTION ----------------------- */
733static inline int
734 wv_start_of_frame(struct net_device *, /* Seek beggining of current frame */
735 int, /* end of frame */
736 int); /* start of buffer */
737static inline void
738 wv_packet_read(struct net_device *, /* Read a packet from a frame */
739 int,
740 int),
741 wv_packet_rcv(struct net_device *); /* Read all packets waiting */
742/* --------------------- PACKET TRANSMISSION --------------------- */
743static inline void
744 wv_packet_write(struct net_device *, /* Write a packet to the Tx buffer */
745 void *,
746 short);
747static int
748 wavelan_packet_xmit(struct sk_buff *, /* Send a packet */
749 struct net_device *);
750/* -------------------- HARDWARE CONFIGURATION -------------------- */
751static inline int
752 wv_mmc_init(struct net_device *); /* Initialize the modem */
753static int
754 wv_ru_stop(struct net_device *), /* Stop the i82593 receiver unit */
755 wv_ru_start(struct net_device *); /* Start the i82593 receiver unit */
756static int
757 wv_82593_config(struct net_device *); /* Configure the i82593 */
758static inline int
759 wv_pcmcia_reset(struct net_device *); /* Reset the pcmcia interface */
760static int
761 wv_hw_config(struct net_device *); /* Reset & configure the whole hardware */
762static inline void
763 wv_hw_reset(struct net_device *); /* Same, + start receiver unit */
764static inline int
765 wv_pcmcia_config(dev_link_t *); /* Configure the pcmcia interface */
766static void
767 wv_pcmcia_release(dev_link_t *);/* Remove a device */
768/* ---------------------- INTERRUPT HANDLING ---------------------- */
769static irqreturn_t
770 wavelan_interrupt(int, /* Interrupt handler */
771 void *,
772 struct pt_regs *);
773static void
774 wavelan_watchdog(struct net_device *); /* Transmission watchdog */
775/* ------------------- CONFIGURATION CALLBACKS ------------------- */
776static int
777 wavelan_open(struct net_device *), /* Open the device */
778 wavelan_close(struct net_device *); /* Close the device */
779static dev_link_t *
780 wavelan_attach(void); /* Create a new device */
781static void
782 wavelan_detach(dev_link_t *); /* Destroy a removed device */
783static int
784 wavelan_event(event_t, /* Manage pcmcia events */
785 int,
786 event_callback_args_t *);
787
788/**************************** VARIABLES ****************************/
789
790static dev_info_t dev_info = "wavelan_cs";
791static dev_link_t *dev_list = NULL; /* Linked list of devices */
792
793/*
794 * Parameters that can be set with 'insmod'
795 * The exact syntax is 'insmod wavelan_cs.o <var>=<value>'
796 */
797
798/* Shared memory speed, in ns */
799static int mem_speed = 0;
800
801/* New module interface */
802module_param(mem_speed, int, 0);
803
804#ifdef WAVELAN_ROAMING /* Conditional compile, see above in options */
805/* Enable roaming mode ? No ! Please keep this to 0 */
806static int do_roaming = 0;
807module_param(do_roaming, bool, 0);
808#endif /* WAVELAN_ROAMING */
809
810MODULE_LICENSE("GPL");
811
812#endif /* WAVELAN_CS_P_H */
813
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