drivers/net/wireless/wavelan_cs.p.h

   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
 515 static 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
 552 typedef 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
 566 typedef 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
 579 struct 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 */
 591 typedef struct net_device_stats en_stats;
 592 typedef struct iw_statistics    iw_stats;
 593 typedef struct iw_quality       iw_qual;
 594 typedef struct iw_freq          iw_freq;
 595 typedef struct net_local        net_local;
 596 typedef struct timer_list       timer_list;
 597
 598 /* Basic types */
 599 typedef 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  */
 610 struct 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
 656 wavepoint_history *wl_roam_check(unsigned short nwid, net_local *lp);
 657 wavepoint_history *wl_new_wavepoint(unsigned short nwid, unsigned char seq, net_local *lp);
 658 void wl_del_wavepoint(wavepoint_history *wavepoint, net_local *lp);
 659 void wl_cell_expiry(unsigned long data);
 660 wavepoint_history *wl_best_sigqual(int fast_search, net_local *lp);
 661 void wl_update_history(wavepoint_history *wavepoint, unsigned char sigqual, unsigned char seq);
 662 void wv_roam_handover(wavepoint_history *wavepoint, net_local *lp);
 663 void wv_nwid_filter(unsigned char mode, net_local *lp);
 664 void wv_roam_init(struct net_device *dev);
 665 void wv_roam_cleanup(struct net_device *dev);
 666 #endif  /* WAVELAN_ROAMING */
 667
 668 /* ----------------- MODEM MANAGEMENT SUBROUTINES ----------------- */
 669 static inline u_char            /* data */
 670         hasr_read(u_long);      /* Read the host interface : base address */
 671 static 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);
 676 static 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 */
 685 static 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);
 693 static inline u_char            /* Read 1 byte from the MMC */
 694         mmc_in(u_long,
 695                u_short);
 696 static 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 */
 704 static 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 ----------------------- */
 710 static int
 711         wv_82593_cmd(struct net_device *,       /* synchronously send a command to i82593 */
 712                      char *,
 713                      int,
 714                      int);
 715 static inline int
 716         wv_diag(struct net_device *);   /* Diagnostique the i82593 */
 717 static int
 718         read_ringbuf(struct net_device *,       /* Read a receive buffer */
 719                      int,
 720                      char *,
 721                      int);
 722 static inline void
 723         wv_82593_reconfig(struct net_device *); /* Reconfigure the controller */
 724 /* ------------------- DEBUG & INFO SUBROUTINES ------------------- */
 725 static inline void
 726         wv_init_info(struct net_device *);      /* display startup info */
 727 /* ------------------- IOCTL, STATS & RECONFIG ------------------- */
 728 static en_stats *
 729         wavelan_get_stats(struct net_device *); /* Give stats /proc/net/dev */
 730 static iw_stats *
 731         wavelan_get_wireless_stats(struct net_device *);
 732 /* ----------------------- PACKET RECEPTION ----------------------- */
 733 static 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 */
 737 static 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 --------------------- */
 743 static inline void
 744         wv_packet_write(struct net_device *,    /* Write a packet to the Tx buffer */
 745                         void *,
 746                         short);
 747 static int
 748         wavelan_packet_xmit(struct sk_buff *,   /* Send a packet */
 749                             struct net_device *);
 750 /* -------------------- HARDWARE CONFIGURATION -------------------- */
 751 static inline int
 752         wv_mmc_init(struct net_device *);       /* Initialize the modem */
 753 static 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 */
 756 static int
 757         wv_82593_config(struct net_device *);   /* Configure the i82593 */
 758 static inline int
 759         wv_pcmcia_reset(struct net_device *);   /* Reset the pcmcia interface */
 760 static int
 761         wv_hw_config(struct net_device *);      /* Reset & configure the whole hardware */
 762 static inline void
 763         wv_hw_reset(struct net_device *);       /* Same, + start receiver unit */
 764 static inline int
 765         wv_pcmcia_config(dev_link_t *); /* Configure the pcmcia interface */
 766 static void
 767         wv_pcmcia_release(dev_link_t *);/* Remove a device */
 768 /* ---------------------- INTERRUPT HANDLING ---------------------- */
 769 static irqreturn_t
 770         wavelan_interrupt(int,  /* Interrupt handler */
 771                           void *,
 772                           struct pt_regs *);
 773 static void
 774         wavelan_watchdog(struct net_device *);  /* Transmission watchdog */
 775 /* ------------------- CONFIGURATION CALLBACKS ------------------- */
 776 static int
 777         wavelan_open(struct net_device *),              /* Open the device */
 778         wavelan_close(struct net_device *);     /* Close the device */
 779 static dev_link_t *
 780         wavelan_attach(void);           /* Create a new device */
 781 static void
 782         wavelan_detach(dev_link_t *);   /* Destroy a removed device */
 783 static int
 784         wavelan_event(event_t,          /* Manage pcmcia events */
 785                       int,
 786                       event_callback_args_t *);
 787
 788 /**************************** VARIABLES ****************************/
 789
 790 static dev_info_t dev_info = "wavelan_cs";
 791 static 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 */
 799 static int      mem_speed = 0;
 800
 801 /* New module interface */
 802 module_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 */
 806 static int      do_roaming = 0;
 807 module_param(do_roaming, bool, 0);
 808 #endif  /* WAVELAN_ROAMING */
 809
 810 MODULE_LICENSE("GPL");
 811
 812 #endif  /* WAVELAN_CS_P_H */
 813