drivers/net/wireless/wavelan.p.h

   1 /*
   2  *      WaveLAN ISA driver
   3  *
   4  *              Jean II - HPLB '96
   5  *
   6  * Reorganisation and extension of the driver.
   7  *
   8  * This file contains all definitions and declarations necessary for the
   9  * WaveLAN ISA driver.  This file is a private header, so it should
  10  * be included only in wavelan.c!
  11  */
  12
  13 #ifndef WAVELAN_P_H
  14 #define WAVELAN_P_H
  15
  16 /************************** DOCUMENTATION ***************************/
  17 /*
  18  * This driver provides a Linux interface to the WaveLAN ISA 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  * WaveLANs are also distributed by DEC (RoamAbout DS) and Digital Ocean.
  22  *
  23  * To learn how to use this driver, read the NET3 HOWTO.
  24  * If you want to exploit the many other functionalities, read the comments
  25  * in the code.
  26  *
  27  * This driver is the result of the effort of many people (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 SET_PSA_CRC, to have your card correctly recognised by
  62  *        an access point and the Point-to-Point diagnostic tool.
  63  *      o USE_PSA_CONFIG, to read configuration from the PSA (EEprom)
  64  *        (otherwise we always start afresh with some defaults)
  65  *
  66  * wavelan.o is too darned big
  67  * ---------------------------
  68  *      That's true!  There is a very simple way to reduce the driver
  69  *      object by 33%!  Comment out the following line:
  70  *              #include <linux/wireless.h>
  71  *      Other compile options can also reduce the size of it...
  72  *
  73  * MAC address and hardware detection:
  74  * -----------------------------------
  75  *      The detection code for the WaveLAN checks that the first three
  76  *      octets of the MAC address fit the company code.  This type of
  77  *      detection works well for AT&T cards (because the AT&T code is
  78  *      hardcoded in wavelan.h), but of course will fail for other
  79  *      manufacturers.
  80  *
  81  *      If you are sure that your card is derived from the WaveLAN,
  82  *      here is the way to configure it:
  83  *      1) Get your MAC address
  84  *              a) With your card utilities (wfreqsel, instconf, etc.)
  85  *              b) With the driver:
  86  *                      o compile the kernel with DEBUG_CONFIG_INFO enabled
  87  *                      o Boot and look the card messages
  88  *      2) Set your MAC code (3 octets) in MAC_ADDRESSES[][3] (wavelan.h)
  89  *      3) Compile and verify
  90  *      4) Send me the MAC code.  I will include it in the next version.
  91  *
  92  */
  93
  94 /* --------------------- WIRELESS EXTENSIONS --------------------- */
  95 /*
  96  * This driver is the first to support "wireless extensions".
  97  * This set of extensions provides a standard way to control the wireless
  98  * characteristics of the hardware.  Applications such as mobile IP may
  99  * take advantage of it.
 100  *
 101  * You will need to enable the CONFIG_NET_RADIO define in the kernel
 102  * configuration to enable the wireless extensions (this is the one
 103  * giving access to the radio network device choice).
 104  *
 105  * It might also be a good idea as well to fetch the wireless tools to
 106  * configure the device and play a bit.
 107  */
 108
 109 /* ---------------------------- FILES ---------------------------- */
 110 /*
 111  * wavelan.c:           actual code for the driver:  C functions
 112  *
 113  * wavelan.p.h:         private header:  local types and variables for driver
 114  *
 115  * wavelan.h:           description of the hardware interface and structs
 116  *
 117  * i82586.h:            description of the Ethernet controller
 118  */
 119
 120 /* --------------------------- HISTORY --------------------------- */
 121 /*
 122  * This is based on information in the drivers' headers. It may not be
 123  * accurate, and I guarantee only my best effort.
 124  *
 125  * The history of the WaveLAN drivers is as complicated as the history of
 126  * the WaveLAN itself (NCR -> AT&T -> Lucent).
 127  *
 128  * It all started with Anders Klemets <klemets@paul.rutgers.edu>
 129  * writing a WaveLAN ISA driver for the Mach microkernel.  Girish
 130  * Welling <welling@paul.rutgers.edu> had also worked on it.
 131  * Keith Moore modified this for the PCMCIA hardware.
 132  *
 133  * Robert Morris <rtm@das.harvard.edu> ported these two drivers to BSDI
 134  * and added specific PCMCIA support (there is currently no equivalent
 135  * of the PCMCIA package under BSD).
 136  *
 137  * Jim Binkley <jrb@cs.pdx.edu> ported both BSDI drivers to FreeBSD.
 138  *
 139  * Bruce Janson <bruce@cs.usyd.edu.au> ported the BSDI ISA driver to Linux.
 140  *
 141  * Anthony D. Joseph <adj@lcs.mit.edu> started to modify Bruce's driver
 142  * (with help of the BSDI PCMCIA driver) for PCMCIA.
 143  * Yunzhou Li <yunzhou@strat.iol.unh.edu> finished this work.
 144  * Joe Finney <joe@comp.lancs.ac.uk> patched the driver to start
 145  * 2.00 cards correctly (2.4 GHz with frequency selection).
 146  * David Hinds <dahinds@users.sourceforge.net> integrated the whole in his
 147  * PCMCIA package (and bug corrections).
 148  *
 149  * I (Jean Tourrilhes - jt@hplb.hpl.hp.com) then started to make some
 150  * patches to the PCMCIA driver.  Later, I added code in the ISA driver
 151  * for Wireless Extensions and full support of frequency selection
 152  * cards.  Then, I did the same to the PCMCIA driver, and did some
 153  * reorganisation.  Finally, I came back to the ISA driver to
 154  * upgrade it at the same level as the PCMCIA one and reorganise
 155  * the code.
 156  * Loeke Brederveld <lbrederv@wavelan.com> from Lucent has given me
 157  * much needed information on the WaveLAN hardware.
 158  */
 159
 160 /* The original copyrights and literature mention others' names and
 161  * credits.  I don't know what their part in this development was.
 162  */
 163
 164 /* By the way, for the copyright and legal stuff:
 165  * almost everybody wrote code under the GNU or BSD license (or similar),
 166  * and want their original copyright to remain somewhere in the
 167  * code (for myself, I go with the GPL).
 168  * Nobody wants to take responsibility for anything, except the fame.
 169  */
 170
 171 /* --------------------------- CREDITS --------------------------- */
 172 /*
 173  * This software was developed as a component of the
 174  * Linux operating system.
 175  * It is based on other device drivers and information
 176  * either written or supplied by:
 177  *      Ajay Bakre <bakre@paul.rutgers.edu>,
 178  *      Donald Becker <becker@cesdis.gsfc.nasa.gov>,
 179  *      Loeke Brederveld <Loeke.Brederveld@Utrecht.NCR.com>,
 180  *      Brent Elphick <belphick@uwaterloo.ca>,
 181  *      Anders Klemets <klemets@it.kth.se>,
 182  *      Vladimir V. Kolpakov <w@stier.koenig.ru>,
 183  *      Marc Meertens <Marc.Meertens@Utrecht.NCR.com>,
 184  *      Pauline Middelink <middelin@polyware.iaf.nl>,
 185  *      Robert Morris <rtm@das.harvard.edu>,
 186  *      Jean Tourrilhes <jt@hpl.hp.com>,
 187  *      Girish Welling <welling@paul.rutgers.edu>,
 188  *      Clark Woodworth <clark@hiway1.exit109.com>
 189  *      Yongguang Zhang <ygz@isl.hrl.hac.com>
 190  *
 191  * Thanks go also to:
 192  *      James Ashton <jaa101@syseng.anu.edu.au>,
 193  *      Alan Cox <alan@redhat.com>,
 194  *      Allan Creighton <allanc@cs.usyd.edu.au>,
 195  *      Matthew Geier <matthew@cs.usyd.edu.au>,
 196  *      Remo di Giovanni <remo@cs.usyd.edu.au>,
 197  *      Eckhard Grah <grah@wrcs1.urz.uni-wuppertal.de>,
 198  *      Vipul Gupta <vgupta@cs.binghamton.edu>,
 199  *      Mark Hagan <mhagan@wtcpost.daytonoh.NCR.COM>,
 200  *      Tim Nicholson <tim@cs.usyd.edu.au>,
 201  *      Ian Parkin <ian@cs.usyd.edu.au>,
 202  *      John Rosenberg <johnr@cs.usyd.edu.au>,
 203  *      George Rossi <george@phm.gov.au>,
 204  *      Arthur Scott <arthur@cs.usyd.edu.au>,
 205  *      Stanislav Sinyagin <stas@isf.ru>
 206  *      and Peter Storey for their assistance and advice.
 207  *
 208  * Additional Credits:
 209  *
 210  *      My development has been done initially under Debian 1.1 (Linux 2.0.x)
 211  *      and now under Debian 2.2, initially with an HP Vectra XP/60, and now
 212  *      an HP Vectra XP/90.
 213  *
 214  */
 215
 216 /* ------------------------- IMPROVEMENTS ------------------------- */
 217 /*
 218  * I proudly present:
 219  *
 220  * Changes made in first pre-release:
 221  * ----------------------------------
 222  *      - reorganisation of the code, function name change
 223  *      - creation of private header (wavelan.p.h)
 224  *      - reorganised debug messages
 225  *      - more comments, history, etc.
 226  *      - mmc_init:  configure the PSA if not done
 227  *      - mmc_init:  correct default value of level threshold for PCMCIA
 228  *      - mmc_init:  2.00 detection better code for 2.00 initialization
 229  *      - better info at startup
 230  *      - IRQ setting (note:  this setting is permanent)
 231  *      - watchdog:  change strategy (and solve module removal problems)
 232  *      - add wireless extensions (ioctl and get_wireless_stats)
 233  *        get/set nwid/frequency on fly, info for /proc/net/wireless
 234  *      - more wireless extensions:  SETSPY and GETSPY
 235  *      - make wireless extensions optional
 236  *      - private ioctl to set/get quality and level threshold, histogram
 237  *      - remove /proc/net/wavelan
 238  *      - suppress useless stuff from lp (net_local)
 239  *      - kernel 2.1 support (copy_to/from_user instead of memcpy_to/fromfs)
 240  *      - add message level (debug stuff in /var/adm/debug and errors not
 241  *        displayed at console and still in /var/adm/messages)
 242  *      - multi device support
 243  *      - start fixing the probe (init code)
 244  *      - more inlines
 245  *      - man page
 246  *      - many other minor details and cleanups
 247  *
 248  * Changes made in second pre-release:
 249  * -----------------------------------
 250  *      - clean up init code (probe and module init)
 251  *      - better multiple device support (module)
 252  *      - name assignment (module)
 253  *
 254  * Changes made in third pre-release:
 255  * ----------------------------------
 256  *      - be more conservative on timers
 257  *      - preliminary support for multicast (I still lack some details)
 258  *
 259  * Changes made in fourth pre-release:
 260  * -----------------------------------
 261  *      - multicast (revisited and finished)
 262  *      - avoid reset in set_multicast_list (a really big hack)
 263  *        if somebody could apply this code for other i82586 based drivers
 264  *      - share onboard memory 75% RU and 25% CU (instead of 50/50)
 265  *
 266  * Changes made for release in 2.1.15:
 267  * -----------------------------------
 268  *      - change the detection code for multi manufacturer code support
 269  *
 270  * Changes made for release in 2.1.17:
 271  * -----------------------------------
 272  *      - update to wireless extensions changes
 273  *      - silly bug in card initial configuration (psa_conf_status)
 274  *
 275  * Changes made for release in 2.1.27 & 2.0.30:
 276  * --------------------------------------------
 277  *      - small bug in debug code (probably not the last one...)
 278  *      - remove extern keyword for wavelan_probe()
 279  *      - level threshold is now a standard wireless extension (version 4 !)
 280  *      - modules parameters types (new module interface)
 281  *
 282  * Changes made for release in 2.1.36:
 283  * -----------------------------------
 284  *      - byte count stats (courtesy of David Hinds)
 285  *      - remove dev_tint stuff (courtesy of David Hinds)
 286  *      - encryption setting from Brent Elphick (thanks a lot!)
 287  *      - 'ioaddr' to 'u_long' for the Alpha (thanks to Stanislav Sinyagin)
 288  *
 289  * Other changes (not by me) :
 290  * -------------------------
 291  *      - Spelling and gramar "rectification".
 292  *
 293  * Changes made for release in 2.0.37 & 2.2.2 :
 294  * ------------------------------------------
 295  *      - Correct status in /proc/net/wireless
 296  *      - Set PSA CRC to make PtP diagnostic tool happy (Bob Gray)
 297  *      - Module init code don't fail if we found at least one card in
 298  *        the address list (Karlis Peisenieks)
 299  *      - Missing parenthesis (Christopher Peterson)
 300  *      - Correct i82586 configuration parameters
 301  *      - Encryption initialisation bug (Robert McCormack)
 302  *      - New mac addresses detected in the probe
 303  *      - Increase watchdog for busy environments
 304  *
 305  * Changes made for release in 2.0.38 & 2.2.7 :
 306  * ------------------------------------------
 307  *      - Correct the reception logic to better report errors and avoid
 308  *        sending bogus packet up the stack
 309  *      - Delay RU config to avoid corrupting first received packet
 310  *      - Change config completion code (to actually check something)
 311  *      - Avoid reading out of bound in skbuf to transmit
 312  *      - Rectify a lot of (useless) debugging code
 313  *      - Change the way to `#ifdef SET_PSA_CRC'
 314  *
 315  * Changes made for release in 2.2.11 & 2.3.13 :
 316  * -------------------------------------------
 317  *      - Change e-mail and web page addresses
 318  *      - Watchdog timer is now correctly expressed in HZ, not in jiffies
 319  *      - Add channel number to the list of frequencies in range
 320  *      - Add the (short) list of bit-rates in range
 321  *      - Developp a new sensitivity... (sens.value & sens.fixed)
 322  *
 323  * Changes made for release in 2.2.14 & 2.3.23 :
 324  * -------------------------------------------
 325  *      - Fix check for root permission (break instead of exit)
 326  *      - New nwid & encoding setting (Wireless Extension 9)
 327  *
 328  * Changes made for release in 2.3.49 :
 329  * ----------------------------------
 330  *      - Indentation reformating (Alan)
 331  *      - Update to new network API (softnet - 2.3.43) :
 332  *              o replace dev->tbusy (Alan)
 333  *              o replace dev->tstart (Alan)
 334  *              o remove dev->interrupt (Alan)
 335  *              o add SMP locking via spinlock in splxx (me)
 336  *              o add spinlock in interrupt handler (me)
 337  *              o use kernel watchdog instead of ours (me)
 338  *              o increase watchdog timeout (kernel is more sensitive) (me)
 339  *              o verify that all the changes make sense and work (me)
 340  *      - Fixup a potential gotcha when reconfiguring and thighten a bit
 341  *              the interactions with Tx queue.
 342  *
 343  * Changes made for release in 2.4.0 :
 344  * ---------------------------------
 345  *      - Fix spinlock stupid bugs that I left in. The driver is now SMP
 346  *              compliant and doesn't lockup at startup.
 347  *
 348  * Changes made for release in 2.5.2 :
 349  * ---------------------------------
 350  *      - Use new driver API for Wireless Extensions :
 351  *              o got rid of wavelan_ioctl()
 352  *              o use a bunch of iw_handler instead
 353  *
 354  * Changes made for release in 2.5.35 :
 355  * ----------------------------------
 356  *      - Set dev->trans_start to avoid filling the logs
 357  *      - Handle better spurious/bogus interrupt
 358  *      - Avoid deadlocks in mmc_out()/mmc_in()
 359  *
 360  * Wishes & dreams:
 361  * ----------------
 362  *      - roaming (see Pcmcia driver)
 363  */
 364
 365 /***************************** INCLUDES *****************************/
 366
 367 #include        <linux/module.h>
 368
 369 #include        <linux/kernel.h>
 370 #include        <linux/sched.h>
 371 #include        <linux/types.h>
 372 #include        <linux/fcntl.h>
 373 #include        <linux/interrupt.h>
 374 #include        <linux/stat.h>
 375 #include        <linux/ptrace.h>
 376 #include        <linux/ioport.h>
 377 #include        <linux/in.h>
 378 #include        <linux/string.h>
 379 #include        <linux/delay.h>
 380 #include        <linux/bitops.h>
 381 #include        <asm/system.h>
 382 #include        <asm/io.h>
 383 #include        <asm/dma.h>
 384 #include        <asm/uaccess.h>
 385 #include        <linux/errno.h>
 386 #include        <linux/netdevice.h>
 387 #include        <linux/etherdevice.h>
 388 #include        <linux/skbuff.h>
 389 #include        <linux/slab.h>
 390 #include        <linux/timer.h>
 391 #include        <linux/init.h>
 392
 393 #include <linux/wireless.h>             /* Wireless extensions */
 394 #include <net/iw_handler.h>             /* Wireless handlers */
 395
 396 /* WaveLAN declarations */
 397 #include        "i82586.h"
 398 #include        "wavelan.h"
 399
 400 /************************** DRIVER OPTIONS **************************/
 401 /*
 402  * `#define' or `#undef' the following constant to change the behaviour
 403  * of the driver...
 404  */
 405 #undef SET_PSA_CRC              /* Calculate and set the CRC on PSA (slower) */
 406 #define USE_PSA_CONFIG          /* Use info from the PSA. */
 407 #undef STRUCT_CHECK             /* Verify padding of structures. */
 408 #undef EEPROM_IS_PROTECTED      /* doesn't seem to be necessary */
 409 #define MULTICAST_AVOID         /* Avoid extra multicast (I'm sceptical). */
 410 #undef SET_MAC_ADDRESS          /* Experimental */
 411
 412 #ifdef WIRELESS_EXT     /* If wireless extensions exist in the kernel */
 413 /* Warning:  this stuff will slow down the driver. */
 414 #define WIRELESS_SPY            /* Enable spying addresses. */
 415 #undef HISTOGRAM                /* Enable histogram of signal level. */
 416 #endif
 417
 418 /****************************** DEBUG ******************************/
 419
 420 #undef DEBUG_MODULE_TRACE       /* module insertion/removal */
 421 #undef DEBUG_CALLBACK_TRACE     /* calls made by Linux */
 422 #undef DEBUG_INTERRUPT_TRACE    /* calls to handler */
 423 #undef DEBUG_INTERRUPT_INFO     /* type of interrupt and so on */
 424 #define DEBUG_INTERRUPT_ERROR   /* problems */
 425 #undef DEBUG_CONFIG_TRACE       /* Trace the config functions. */
 426 #undef DEBUG_CONFIG_INFO        /* what's going on */
 427 #define DEBUG_CONFIG_ERROR      /* errors on configuration */
 428 #undef DEBUG_TX_TRACE           /* transmission calls */
 429 #undef DEBUG_TX_INFO            /* header of the transmitted packet */
 430 #undef DEBUG_TX_FAIL            /* Normal failure conditions */
 431 #define DEBUG_TX_ERROR          /* Unexpected conditions */
 432 #undef DEBUG_RX_TRACE           /* transmission calls */
 433 #undef DEBUG_RX_INFO            /* header of the received packet */
 434 #undef DEBUG_RX_FAIL            /* Normal failure conditions */
 435 #define DEBUG_RX_ERROR          /* Unexpected conditions */
 436
 437 #undef DEBUG_PACKET_DUMP        /* Dump packet on the screen if defined to 32. */
 438 #undef DEBUG_IOCTL_TRACE        /* misc. call by Linux */
 439 #undef DEBUG_IOCTL_INFO         /* various debugging info */
 440 #define DEBUG_IOCTL_ERROR       /* what's going wrong */
 441 #define DEBUG_BASIC_SHOW        /* Show basic startup info. */
 442 #undef DEBUG_VERSION_SHOW       /* Print version info. */
 443 #undef DEBUG_PSA_SHOW           /* Dump PSA to screen. */
 444 #undef DEBUG_MMC_SHOW           /* Dump mmc to screen. */
 445 #undef DEBUG_SHOW_UNUSED        /* Show unused fields too. */
 446 #undef DEBUG_I82586_SHOW        /* Show i82586 status. */
 447 #undef DEBUG_DEVICE_SHOW        /* Show device parameters. */
 448
 449 /************************ CONSTANTS & MACROS ************************/
 450
 451 #ifdef DEBUG_VERSION_SHOW
 452 static const char       *version        = "wavelan.c : v24 (SMP + wireless extensions) 11/12/01\n";
 453 #endif
 454
 455 /* Watchdog temporisation */
 456 #define WATCHDOG_JIFFIES        (512*HZ/100)
 457
 458 /* Macro to get the number of elements in an array */
 459 #define NELS(a)                         (sizeof(a) / sizeof(a[0]))
 460
 461 /* ------------------------ PRIVATE IOCTL ------------------------ */
 462
 463 #define SIOCSIPQTHR     SIOCIWFIRSTPRIV         /* Set quality threshold */
 464 #define SIOCGIPQTHR     SIOCIWFIRSTPRIV + 1     /* Get quality threshold */
 465
 466 #define SIOCSIPHISTO    SIOCIWFIRSTPRIV + 2     /* Set histogram ranges */
 467 #define SIOCGIPHISTO    SIOCIWFIRSTPRIV + 3     /* Get histogram values */
 468
 469 /****************************** TYPES ******************************/
 470
 471 /* Shortcuts */
 472 typedef struct net_device_stats en_stats;
 473 typedef struct iw_statistics    iw_stats;
 474 typedef struct iw_quality       iw_qual;
 475 typedef struct iw_freq          iw_freq;
 476 typedef struct net_local        net_local;
 477 typedef struct timer_list       timer_list;
 478
 479 /* Basic types */
 480 typedef u_char          mac_addr[WAVELAN_ADDR_SIZE];    /* Hardware address */
 481
 482 /*
 483  * Static specific data for the interface.
 484  *
 485  * For each network interface, Linux keeps data in two structures:  "device"
 486  * keeps the generic data (same format for everybody) and "net_local" keeps
 487  * additional specific data.
 488  * Note that some of this specific data is in fact generic (en_stats, for
 489  * example).
 490  */
 491 struct net_local
 492 {
 493   net_local *   next;           /* linked list of the devices */
 494   struct net_device *   dev;            /* reverse link */
 495   spinlock_t    spinlock;       /* Serialize access to the hardware (SMP) */
 496   en_stats      stats;          /* Ethernet interface statistics */
 497   int           nresets;        /* number of hardware resets */
 498   u_char        reconfig_82586; /* We need to reconfigure the controller. */
 499   u_char        promiscuous;    /* promiscuous mode */
 500   int           mc_count;       /* number of multicast addresses */
 501   u_short       hacr;           /* current host interface state */
 502
 503   int           tx_n_in_use;
 504   u_short       rx_head;
 505   u_short       rx_last;
 506   u_short       tx_first_free;
 507   u_short       tx_first_in_use;
 508
 509 #ifdef WIRELESS_EXT
 510   iw_stats      wstats;         /* Wireless-specific statistics */
 511
 512   struct iw_spy_data    spy_data;
 513   struct iw_public_data wireless_data;
 514 #endif
 515
 516 #ifdef HISTOGRAM
 517   int           his_number;             /* number of intervals */
 518   u_char        his_range[16];          /* boundaries of interval ]n-1; n] */
 519   u_long        his_sum[16];            /* sum in interval */
 520 #endif  /* HISTOGRAM */
 521 };
 522
 523 /**************************** PROTOTYPES ****************************/
 524
 525 /* ----------------------- MISC. SUBROUTINES ------------------------ */
 526 static u_char
 527         wv_irq_to_psa(int);
 528 static int
 529         wv_psa_to_irq(u_char);
 530 /* ------------------- HOST ADAPTER SUBROUTINES ------------------- */
 531 static inline u_short           /* data */
 532         hasr_read(u_long);      /* Read the host interface:  base address */
 533 static inline void
 534         hacr_write(u_long,      /* Write to host interface:  base address */
 535                    u_short),    /* data */
 536         hacr_write_slow(u_long,
 537                    u_short),
 538         set_chan_attn(u_long,   /* ioaddr */
 539                       u_short), /* hacr   */
 540         wv_hacr_reset(u_long),  /* ioaddr */
 541         wv_16_off(u_long,       /* ioaddr */
 542                   u_short),     /* hacr   */
 543         wv_16_on(u_long,        /* ioaddr */
 544                  u_short),      /* hacr   */
 545         wv_ints_off(struct net_device *),
 546         wv_ints_on(struct net_device *);
 547 /* ----------------- MODEM MANAGEMENT SUBROUTINES ----------------- */
 548 static void
 549         psa_read(u_long,        /* Read the Parameter Storage Area. */
 550                  u_short,       /* hacr */
 551                  int,           /* offset in PSA */
 552                  u_char *,      /* buffer to fill */
 553                  int),          /* size to read */
 554         psa_write(u_long,       /* Write to the PSA. */
 555                   u_short,      /* hacr */
 556                   int,          /* offset in PSA */
 557                   u_char *,     /* buffer in memory */
 558                   int);         /* length of buffer */
 559 static inline void
 560         mmc_out(u_long,         /* Write 1 byte to the Modem Manag Control. */
 561                 u_short,
 562                 u_char),
 563         mmc_write(u_long,       /* Write n bytes to the MMC. */
 564                   u_char,
 565                   u_char *,
 566                   int);
 567 static inline u_char            /* Read 1 byte from the MMC. */
 568         mmc_in(u_long,
 569                u_short);
 570 static inline void
 571         mmc_read(u_long,        /* Read n bytes from the MMC. */
 572                  u_char,
 573                  u_char *,
 574                  int),
 575         fee_wait(u_long,        /* Wait for frequency EEPROM:  base address */
 576                  int,           /* base delay to wait for */
 577                  int);          /* time to wait */
 578 static void
 579         fee_read(u_long,        /* Read the frequency EEPROM:  base address */
 580                  u_short,       /* destination offset */
 581                  u_short *,     /* data buffer */
 582                  int);          /* number of registers */
 583 /* ---------------------- I82586 SUBROUTINES ----------------------- */
 584 static /*inline*/ void
 585         obram_read(u_long,      /* ioaddr */
 586                    u_short,     /* o */
 587                    u_char *,    /* b */
 588                    int);        /* n */
 589 static inline void
 590         obram_write(u_long,     /* ioaddr */
 591                     u_short,    /* o */
 592                     u_char *,   /* b */
 593                     int);       /* n */
 594 static void
 595         wv_ack(struct net_device *);
 596 static inline int
 597         wv_synchronous_cmd(struct net_device *,
 598                            const char *),
 599         wv_config_complete(struct net_device *,
 600                            u_long,
 601                            net_local *);
 602 static int
 603         wv_complete(struct net_device *,
 604                     u_long,
 605                     net_local *);
 606 static inline void
 607         wv_82586_reconfig(struct net_device *);
 608 /* ------------------- DEBUG & INFO SUBROUTINES ------------------- */
 609 #ifdef DEBUG_I82586_SHOW
 610 static void
 611         wv_scb_show(unsigned short);
 612 #endif
 613 static inline void
 614         wv_init_info(struct net_device *);      /* display startup info */
 615 /* ------------------- IOCTL, STATS & RECONFIG ------------------- */
 616 static en_stats *
 617         wavelan_get_stats(struct net_device *); /* Give stats /proc/net/dev */
 618 static iw_stats *
 619         wavelan_get_wireless_stats(struct net_device *);
 620 static void
 621         wavelan_set_multicast_list(struct net_device *);
 622 /* ----------------------- PACKET RECEPTION ----------------------- */
 623 static inline void
 624         wv_packet_read(struct net_device *,     /* Read a packet from a frame. */
 625                        u_short,
 626                        int),
 627         wv_receive(struct net_device *);        /* Read all packets waiting. */
 628 /* --------------------- PACKET TRANSMISSION --------------------- */
 629 static inline int
 630         wv_packet_write(struct net_device *,    /* Write a packet to the Tx buffer. */
 631                         void *,
 632                         short);
 633 static int
 634         wavelan_packet_xmit(struct sk_buff *,   /* Send a packet. */
 635                             struct net_device *);
 636 /* -------------------- HARDWARE CONFIGURATION -------------------- */
 637 static inline int
 638         wv_mmc_init(struct net_device *),       /* Initialize the modem. */
 639         wv_ru_start(struct net_device *),       /* Start the i82586 receiver unit. */
 640         wv_cu_start(struct net_device *),       /* Start the i82586 command unit. */
 641         wv_82586_start(struct net_device *);    /* Start the i82586. */
 642 static void
 643         wv_82586_config(struct net_device *);   /* Configure the i82586. */
 644 static inline void
 645         wv_82586_stop(struct net_device *);
 646 static int
 647         wv_hw_reset(struct net_device *),       /* Reset the WaveLAN hardware. */
 648         wv_check_ioaddr(u_long,         /* ioaddr */
 649                         u_char *);      /* mac address (read) */
 650 /* ---------------------- INTERRUPT HANDLING ---------------------- */
 651 static irqreturn_t
 652         wavelan_interrupt(int,          /* interrupt handler */
 653                           void *,
 654                           struct pt_regs *);
 655 static void
 656         wavelan_watchdog(struct net_device *);  /* transmission watchdog */
 657 /* ------------------- CONFIGURATION CALLBACKS ------------------- */
 658 static int
 659         wavelan_open(struct net_device *),      /* Open the device. */
 660         wavelan_close(struct net_device *),     /* Close the device. */
 661         wavelan_config(struct net_device *, unsigned short);/* Configure one device. */
 662 extern struct net_device *wavelan_probe(int unit);      /* See Space.c. */
 663
 664 /**************************** VARIABLES ****************************/
 665
 666 /*
 667  * This is the root of the linked list of WaveLAN drivers
 668  * It is use to verify that we don't reuse the same base address
 669  * for two different drivers and to clean up when removing the module.
 670  */
 671 static net_local *      wavelan_list    = (net_local *) NULL;
 672
 673 /*
 674  * This table is used to translate the PSA value to IRQ number
 675  * and vice versa.
 676  */
 677 static u_char   irqvals[]       =
 678 {
 679            0,    0,    0, 0x01,
 680         0x02, 0x04,    0, 0x08,
 681            0,    0, 0x10, 0x20,
 682         0x40,    0,    0, 0x80,
 683 };
 684
 685 /*
 686  * Table of the available I/O addresses (base addresses) for WaveLAN
 687  */
 688 static unsigned short   iobase[]        =
 689 {
 690 #if     0
 691   /* Leave out 0x3C0 for now -- seems to clash with some video
 692    * controllers.
 693    * Leave out the others too -- we will always use 0x390 and leave
 694    * 0x300 for the Ethernet device.
 695    * Jean II:  0x3E0 is fine as well.
 696    */
 697   0x300, 0x390, 0x3E0, 0x3C0
 698 #endif  /* 0 */
 699   0x390, 0x3E0
 700 };
 701
 702 #ifdef  MODULE
 703 /* Parameters set by insmod */
 704 static int      io[4];
 705 static int      irq[4];
 706 static char     *name[4];
 707 module_param_array(io, int, NULL, 0);
 708 module_param_array(irq, int, NULL, 0);
 709 module_param_array(name, charp, NULL, 0);
 710
 711 MODULE_PARM_DESC(io, "WaveLAN I/O base address(es),required");
 712 MODULE_PARM_DESC(irq, "WaveLAN IRQ number(s)");
 713 MODULE_PARM_DESC(name, "WaveLAN interface neme(s)");
 714 #endif  /* MODULE */
 715
 716 #endif  /* WAVELAN_P_H */