drivers/net/wireless/wavelan_cs.c

   1 /*
   2  *      Wavelan Pcmcia driver
   3  *
   4  *              Jean II - HPLB '96
   5  *
   6  * Reorganisation and extension of the driver.
   7  * Original copyright follow. See wavelan_cs.p.h for details.
   8  *
   9  * This code is derived from Anthony D. Joseph's code and all the changes here
  10  * are also under the original copyright below.
  11  *
  12  * This code supports version 2.00 of WaveLAN/PCMCIA cards (2.4GHz), and
  13  * can work on Linux 2.0.36 with support of David Hinds' PCMCIA Card Services
  14  *
  15  * Joe Finney (joe@comp.lancs.ac.uk) at Lancaster University in UK added
  16  * critical code in the routine to initialize the Modem Management Controller.
  17  *
  18  * Thanks to Alan Cox and Bruce Janson for their advice.
  19  *
  20  *      -- Yunzhou Li (scip4166@nus.sg)
  21  *
  22 #ifdef WAVELAN_ROAMING
  23  * Roaming support added 07/22/98 by Justin Seger (jseger@media.mit.edu)
  24  * based on patch by Joe Finney from Lancaster University.
  25 #endif
  26  *
  27  * Lucent (formerly AT&T GIS, formerly NCR) WaveLAN PCMCIA card: An
  28  * Ethernet-like radio transceiver controlled by an Intel 82593 coprocessor.
  29  *
  30  *   A non-shared memory PCMCIA ethernet driver for linux
  31  *
  32  * ISA version modified to support PCMCIA by Anthony Joseph (adj@lcs.mit.edu)
  33  *
  34  *
  35  * Joseph O'Sullivan & John Langford (josullvn@cs.cmu.edu & jcl@cs.cmu.edu)
  36  *
  37  * Apr 2 '98  made changes to bring the i82593 control/int handling in line
  38  *             with offical specs...
  39  *
  40  ****************************************************************************
  41  *   Copyright 1995
  42  *   Anthony D. Joseph
  43  *   Massachusetts Institute of Technology
  44  *
  45  *   Permission to use, copy, modify, and distribute this program
  46  *   for any purpose and without fee is hereby granted, provided
  47  *   that this copyright and permission notice appear on all copies
  48  *   and supporting documentation, the name of M.I.T. not be used
  49  *   in advertising or publicity pertaining to distribution of the
  50  *   program without specific prior permission, and notice be given
  51  *   in supporting documentation that copying and distribution is
  52  *   by permission of M.I.T.  M.I.T. makes no representations about
  53  *   the suitability of this software for any purpose.  It is pro-
  54  *   vided "as is" without express or implied warranty.
  55  ****************************************************************************
  56  *
  57  */
  58
  59 /* Do *NOT* add other headers here, you are guaranteed to be wrong - Jean II */
  60 #include "wavelan_cs.p.h"               /* Private header */
  61
  62 #ifdef WAVELAN_ROAMING
  63 static void wl_cell_expiry(unsigned long data);
  64 static void wl_del_wavepoint(wavepoint_history *wavepoint, struct net_local *lp);
  65 static void wv_nwid_filter(unsigned char mode, net_local *lp);
  66 #endif  /*  WAVELAN_ROAMING  */
  67
  68 /************************* MISC SUBROUTINES **************************/
  69 /*
  70  * Subroutines which won't fit in one of the following category
  71  * (wavelan modem or i82593)
  72  */
  73
  74 /******************* MODEM MANAGEMENT SUBROUTINES *******************/
  75 /*
  76  * Useful subroutines to manage the modem of the wavelan
  77  */
  78
  79 /*------------------------------------------------------------------*/
  80 /*
  81  * Read from card's Host Adaptor Status Register.
  82  */
  83 static inline u_char
  84 hasr_read(u_long        base)
  85 {
  86   return(inb(HASR(base)));
  87 } /* hasr_read */
  88
  89 /*------------------------------------------------------------------*/
  90 /*
  91  * Write to card's Host Adapter Command Register.
  92  */
  93 static inline void
  94 hacr_write(u_long       base,
  95            u_char       hacr)
  96 {
  97   outb(hacr, HACR(base));
  98 } /* hacr_write */
  99
 100 /*------------------------------------------------------------------*/
 101 /*
 102  * Write to card's Host Adapter Command Register. Include a delay for
 103  * those times when it is needed.
 104  */
 105 static void
 106 hacr_write_slow(u_long  base,
 107                 u_char  hacr)
 108 {
 109   hacr_write(base, hacr);
 110   /* delay might only be needed sometimes */
 111   mdelay(1);
 112 } /* hacr_write_slow */
 113
 114 /*------------------------------------------------------------------*/
 115 /*
 116  * Read the Parameter Storage Area from the WaveLAN card's memory
 117  */
 118 static void
 119 psa_read(struct net_device *    dev,
 120          int            o,      /* offset in PSA */
 121          u_char *       b,      /* buffer to fill */
 122          int            n)      /* size to read */
 123 {
 124   net_local *lp = netdev_priv(dev);
 125   u_char __iomem *ptr = lp->mem + PSA_ADDR + (o << 1);
 126
 127   while(n-- > 0)
 128     {
 129       *b++ = readb(ptr);
 130       /* Due to a lack of address decode pins, the WaveLAN PCMCIA card
 131        * only supports reading even memory addresses. That means the
 132        * increment here MUST be two.
 133        * Because of that, we can't use memcpy_fromio()...
 134        */
 135       ptr += 2;
 136     }
 137 } /* psa_read */
 138
 139 /*------------------------------------------------------------------*/
 140 /*
 141  * Write the Parameter Storage Area to the WaveLAN card's memory
 142  */
 143 static void
 144 psa_write(struct net_device *   dev,
 145           int           o,      /* Offset in psa */
 146           u_char *      b,      /* Buffer in memory */
 147           int           n)      /* Length of buffer */
 148 {
 149   net_local *lp = netdev_priv(dev);
 150   u_char __iomem *ptr = lp->mem + PSA_ADDR + (o << 1);
 151   int           count = 0;
 152   unsigned int  base = dev->base_addr;
 153   /* As there seem to have no flag PSA_BUSY as in the ISA model, we are
 154    * oblige to verify this address to know when the PSA is ready... */
 155   volatile u_char __iomem *verify = lp->mem + PSA_ADDR +
 156     (psaoff(0, psa_comp_number) << 1);
 157
 158   /* Authorize writing to PSA */
 159   hacr_write(base, HACR_PWR_STAT | HACR_ROM_WEN);
 160
 161   while(n-- > 0)
 162     {
 163       /* write to PSA */
 164       writeb(*b++, ptr);
 165       ptr += 2;
 166
 167       /* I don't have the spec, so I don't know what the correct
 168        * sequence to write is. This hack seem to work for me... */
 169       count = 0;
 170       while((readb(verify) != PSA_COMP_PCMCIA_915) && (count++ < 100))
 171         mdelay(1);
 172     }
 173
 174   /* Put the host interface back in standard state */
 175   hacr_write(base, HACR_DEFAULT);
 176 } /* psa_write */
 177
 178 #ifdef SET_PSA_CRC
 179 /*------------------------------------------------------------------*/
 180 /*
 181  * Calculate the PSA CRC
 182  * Thanks to Valster, Nico <NVALSTER@wcnd.nl.lucent.com> for the code
 183  * NOTE: By specifying a length including the CRC position the
 184  * returned value should be zero. (i.e. a correct checksum in the PSA)
 185  *
 186  * The Windows drivers don't use the CRC, but the AP and the PtP tool
 187  * depend on it.
 188  */
 189 static u_short
 190 psa_crc(unsigned char * psa,    /* The PSA */
 191         int             size)   /* Number of short for CRC */
 192 {
 193   int           byte_cnt;       /* Loop on the PSA */
 194   u_short       crc_bytes = 0;  /* Data in the PSA */
 195   int           bit_cnt;        /* Loop on the bits of the short */
 196
 197   for(byte_cnt = 0; byte_cnt < size; byte_cnt++ )
 198     {
 199       crc_bytes ^= psa[byte_cnt];       /* Its an xor */
 200
 201       for(bit_cnt = 1; bit_cnt < 9; bit_cnt++ )
 202         {
 203           if(crc_bytes & 0x0001)
 204             crc_bytes = (crc_bytes >> 1) ^ 0xA001;
 205           else
 206             crc_bytes >>= 1 ;
 207         }
 208     }
 209
 210   return crc_bytes;
 211 } /* psa_crc */
 212 #endif  /* SET_PSA_CRC */
 213
 214 /*------------------------------------------------------------------*/
 215 /*
 216  * update the checksum field in the Wavelan's PSA
 217  */
 218 static void
 219 update_psa_checksum(struct net_device * dev)
 220 {
 221 #ifdef SET_PSA_CRC
 222   psa_t         psa;
 223   u_short       crc;
 224
 225   /* read the parameter storage area */
 226   psa_read(dev, 0, (unsigned char *) &psa, sizeof(psa));
 227
 228   /* update the checksum */
 229   crc = psa_crc((unsigned char *) &psa,
 230                 sizeof(psa) - sizeof(psa.psa_crc[0]) - sizeof(psa.psa_crc[1])
 231                 - sizeof(psa.psa_crc_status));
 232
 233   psa.psa_crc[0] = crc & 0xFF;
 234   psa.psa_crc[1] = (crc & 0xFF00) >> 8;
 235
 236   /* Write it ! */
 237   psa_write(dev, (char *)&psa.psa_crc - (char *)&psa,
 238             (unsigned char *)&psa.psa_crc, 2);
 239
 240 #ifdef DEBUG_IOCTL_INFO
 241   printk (KERN_DEBUG "%s: update_psa_checksum(): crc = 0x%02x%02x\n",
 242           dev->name, psa.psa_crc[0], psa.psa_crc[1]);
 243
 244   /* Check again (luxury !) */
 245   crc = psa_crc((unsigned char *) &psa,
 246                  sizeof(psa) - sizeof(psa.psa_crc_status));
 247
 248   if(crc != 0)
 249     printk(KERN_WARNING "%s: update_psa_checksum(): CRC does not agree with PSA data (even after recalculating)\n", dev->name);
 250 #endif /* DEBUG_IOCTL_INFO */
 251 #endif  /* SET_PSA_CRC */
 252 } /* update_psa_checksum */
 253
 254 /*------------------------------------------------------------------*/
 255 /*
 256  * Write 1 byte to the MMC.
 257  */
 258 static void
 259 mmc_out(u_long          base,
 260         u_short         o,
 261         u_char          d)
 262 {
 263   int count = 0;
 264
 265   /* Wait for MMC to go idle */
 266   while((count++ < 100) && (inb(HASR(base)) & HASR_MMI_BUSY))
 267     udelay(10);
 268
 269   outb((u_char)((o << 1) | MMR_MMI_WR), MMR(base));
 270   outb(d, MMD(base));
 271 }
 272
 273 /*------------------------------------------------------------------*/
 274 /*
 275  * Routine to write bytes to the Modem Management Controller.
 276  * We start by the end because it is the way it should be !
 277  */
 278 static void
 279 mmc_write(u_long        base,
 280           u_char        o,
 281           u_char *      b,
 282           int           n)
 283 {
 284   o += n;
 285   b += n;
 286
 287   while(n-- > 0 )
 288     mmc_out(base, --o, *(--b));
 289 } /* mmc_write */
 290
 291 /*------------------------------------------------------------------*/
 292 /*
 293  * Read 1 byte from the MMC.
 294  * Optimised version for 1 byte, avoid using memory...
 295  */
 296 static u_char
 297 mmc_in(u_long   base,
 298        u_short  o)
 299 {
 300   int count = 0;
 301
 302   while((count++ < 100) && (inb(HASR(base)) & HASR_MMI_BUSY))
 303     udelay(10);
 304   outb(o << 1, MMR(base));              /* Set the read address */
 305
 306   outb(0, MMD(base));                   /* Required dummy write */
 307
 308   while((count++ < 100) && (inb(HASR(base)) & HASR_MMI_BUSY))
 309     udelay(10);
 310   return (u_char) (inb(MMD(base)));     /* Now do the actual read */
 311 }
 312
 313 /*------------------------------------------------------------------*/
 314 /*
 315  * Routine to read bytes from the Modem Management Controller.
 316  * The implementation is complicated by a lack of address lines,
 317  * which prevents decoding of the low-order bit.
 318  * (code has just been moved in the above function)
 319  * We start by the end because it is the way it should be !
 320  */
 321 static void
 322 mmc_read(u_long         base,
 323          u_char         o,
 324          u_char *       b,
 325          int            n)
 326 {
 327   o += n;
 328   b += n;
 329
 330   while(n-- > 0)
 331     *(--b) = mmc_in(base, --o);
 332 } /* mmc_read */
 333
 334 /*------------------------------------------------------------------*/
 335 /*
 336  * Get the type of encryption available...
 337  */
 338 static inline int
 339 mmc_encr(u_long         base)   /* i/o port of the card */
 340 {
 341   int   temp;
 342
 343   temp = mmc_in(base, mmroff(0, mmr_des_avail));
 344   if((temp != MMR_DES_AVAIL_DES) && (temp != MMR_DES_AVAIL_AES))
 345     return 0;
 346   else
 347     return temp;
 348 }
 349
 350 /*------------------------------------------------------------------*/
 351 /*
 352  * Wait for the frequency EEprom to complete a command...
 353  */
 354 static void
 355 fee_wait(u_long         base,   /* i/o port of the card */
 356          int            delay,  /* Base delay to wait for */
 357          int            number) /* Number of time to wait */
 358 {
 359   int           count = 0;      /* Wait only a limited time */
 360
 361   while((count++ < number) &&
 362         (mmc_in(base, mmroff(0, mmr_fee_status)) & MMR_FEE_STATUS_BUSY))
 363     udelay(delay);
 364 }
 365
 366 /*------------------------------------------------------------------*/
 367 /*
 368  * Read bytes from the Frequency EEprom (frequency select cards).
 369  */
 370 static void
 371 fee_read(u_long         base,   /* i/o port of the card */
 372          u_short        o,      /* destination offset */
 373          u_short *      b,      /* data buffer */
 374          int            n)      /* number of registers */
 375 {
 376   b += n;               /* Position at the end of the area */
 377
 378   /* Write the address */
 379   mmc_out(base, mmwoff(0, mmw_fee_addr), o + n - 1);
 380
 381   /* Loop on all buffer */
 382   while(n-- > 0)
 383     {
 384       /* Write the read command */
 385       mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_READ);
 386
 387       /* Wait until EEprom is ready (should be quick !) */
 388       fee_wait(base, 10, 100);
 389
 390       /* Read the value */
 391       *--b = ((mmc_in(base, mmroff(0, mmr_fee_data_h)) << 8) |
 392               mmc_in(base, mmroff(0, mmr_fee_data_l)));
 393     }
 394 }
 395
 396
 397 /*------------------------------------------------------------------*/
 398 /*
 399  * Write bytes from the Frequency EEprom (frequency select cards).
 400  * This is a bit complicated, because the frequency eeprom has to
 401  * be unprotected and the write enabled.
 402  * Jean II
 403  */
 404 static void
 405 fee_write(u_long        base,   /* i/o port of the card */
 406           u_short       o,      /* destination offset */
 407           u_short *     b,      /* data buffer */
 408           int           n)      /* number of registers */
 409 {
 410   b += n;               /* Position at the end of the area */
 411
 412 #ifdef EEPROM_IS_PROTECTED      /* disabled */
 413 #ifdef DOESNT_SEEM_TO_WORK      /* disabled */
 414   /* Ask to read the protected register */
 415   mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRREAD);
 416
 417   fee_wait(base, 10, 100);
 418
 419   /* Read the protected register */
 420   printk("Protected 2 : %02X-%02X\n",
 421          mmc_in(base, mmroff(0, mmr_fee_data_h)),
 422          mmc_in(base, mmroff(0, mmr_fee_data_l)));
 423 #endif  /* DOESNT_SEEM_TO_WORK */
 424
 425   /* Enable protected register */
 426   mmc_out(base, mmwoff(0, mmw_fee_addr), MMW_FEE_ADDR_EN);
 427   mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PREN);
 428
 429   fee_wait(base, 10, 100);
 430
 431   /* Unprotect area */
 432   mmc_out(base, mmwoff(0, mmw_fee_addr), o + n);
 433   mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRWRITE);
 434 #ifdef DOESNT_SEEM_TO_WORK      /* disabled */
 435   /* Or use : */
 436   mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRCLEAR);
 437 #endif  /* DOESNT_SEEM_TO_WORK */
 438
 439   fee_wait(base, 10, 100);
 440 #endif  /* EEPROM_IS_PROTECTED */
 441
 442   /* Write enable */
 443   mmc_out(base, mmwoff(0, mmw_fee_addr), MMW_FEE_ADDR_EN);
 444   mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_WREN);
 445
 446   fee_wait(base, 10, 100);
 447
 448   /* Write the EEprom address */
 449   mmc_out(base, mmwoff(0, mmw_fee_addr), o + n - 1);
 450
 451   /* Loop on all buffer */
 452   while(n-- > 0)
 453     {
 454       /* Write the value */
 455       mmc_out(base, mmwoff(0, mmw_fee_data_h), (*--b) >> 8);
 456       mmc_out(base, mmwoff(0, mmw_fee_data_l), *b & 0xFF);
 457
 458       /* Write the write command */
 459       mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_WRITE);
 460
 461       /* Wavelan doc says : wait at least 10 ms for EEBUSY = 0 */
 462       mdelay(10);
 463       fee_wait(base, 10, 100);
 464     }
 465
 466   /* Write disable */
 467   mmc_out(base, mmwoff(0, mmw_fee_addr), MMW_FEE_ADDR_DS);
 468   mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_WDS);
 469
 470   fee_wait(base, 10, 100);
 471
 472 #ifdef EEPROM_IS_PROTECTED      /* disabled */
 473   /* Reprotect EEprom */
 474   mmc_out(base, mmwoff(0, mmw_fee_addr), 0x00);
 475   mmc_out(base, mmwoff(0, mmw_fee_ctrl), MMW_FEE_CTRL_PRWRITE);
 476
 477   fee_wait(base, 10, 100);
 478 #endif  /* EEPROM_IS_PROTECTED */
 479 }
 480
 481 /******************* WaveLAN Roaming routines... ********************/
 482
 483 #ifdef WAVELAN_ROAMING  /* Conditional compile, see wavelan_cs.h */
 484
 485 static unsigned char WAVELAN_BEACON_ADDRESS[] = {0x09,0x00,0x0e,0x20,0x03,0x00};
 486
 487 static void wv_roam_init(struct net_device *dev)
 488 {
 489   net_local  *lp= netdev_priv(dev);
 490
 491   /* Do not remove this unless you have a good reason */
 492   printk(KERN_NOTICE "%s: Warning, you have enabled roaming on"
 493          " device %s !\n", dev->name, dev->name);
 494   printk(KERN_NOTICE "Roaming is currently an experimental unsupported feature"
 495          " of the Wavelan driver.\n");
 496   printk(KERN_NOTICE "It may work, but may also make the driver behave in"
 497          " erratic ways or crash.\n");
 498
 499   lp->wavepoint_table.head=NULL;           /* Initialise WavePoint table */
 500   lp->wavepoint_table.num_wavepoints=0;
 501   lp->wavepoint_table.locked=0;
 502   lp->curr_point=NULL;                        /* No default WavePoint */
 503   lp->cell_search=0;
 504
 505   lp->cell_timer.data=(long)lp;               /* Start cell expiry timer */
 506   lp->cell_timer.function=wl_cell_expiry;
 507   lp->cell_timer.expires=jiffies+CELL_TIMEOUT;
 508   add_timer(&lp->cell_timer);
 509
 510   wv_nwid_filter(NWID_PROMISC,lp) ;    /* Enter NWID promiscuous mode */
 511   /* to build up a good WavePoint */
 512                                            /* table... */
 513   printk(KERN_DEBUG "WaveLAN: Roaming enabled on device %s\n",dev->name);
 514 }
 515
 516 static void wv_roam_cleanup(struct net_device *dev)
 517 {
 518   wavepoint_history *ptr,*old_ptr;
 519   net_local *lp= netdev_priv(dev);
 520
 521   printk(KERN_DEBUG "WaveLAN: Roaming Disabled on device %s\n",dev->name);
 522
 523   /* Fixme : maybe we should check that the timer exist before deleting it */
 524   del_timer(&lp->cell_timer);          /* Remove cell expiry timer       */
 525   ptr=lp->wavepoint_table.head;        /* Clear device's WavePoint table */
 526   while(ptr!=NULL)
 527     {
 528       old_ptr=ptr;
 529       ptr=ptr->next;
 530       wl_del_wavepoint(old_ptr,lp);
 531     }
 532 }
 533
 534 /* Enable/Disable NWID promiscuous mode on a given device */
 535 static void wv_nwid_filter(unsigned char mode, net_local *lp)
 536 {
 537   mm_t                  m;
 538   unsigned long         flags;
 539
 540 #ifdef WAVELAN_ROAMING_DEBUG
 541   printk(KERN_DEBUG "WaveLAN: NWID promisc %s, device %s\n",(mode==NWID_PROMISC) ? "on" : "off", lp->dev->name);
 542 #endif
 543
 544   /* Disable interrupts & save flags */
 545   spin_lock_irqsave(&lp->spinlock, flags);
 546
 547   m.w.mmw_loopt_sel = (mode==NWID_PROMISC) ? MMW_LOOPT_SEL_DIS_NWID : 0x00;
 548   mmc_write(lp->dev->base_addr, (char *)&m.w.mmw_loopt_sel - (char *)&m, (unsigned char *)&m.w.mmw_loopt_sel, 1);
 549
 550   if(mode==NWID_PROMISC)
 551     lp->cell_search=1;
 552   else
 553     lp->cell_search=0;
 554
 555   /* ReEnable interrupts & restore flags */
 556   spin_unlock_irqrestore(&lp->spinlock, flags);
 557 }
 558
 559 /* Find a record in the WavePoint table matching a given NWID */
 560 static wavepoint_history *wl_roam_check(unsigned short nwid, net_local *lp)
 561 {
 562   wavepoint_history     *ptr=lp->wavepoint_table.head;
 563
 564   while(ptr!=NULL){
 565     if(ptr->nwid==nwid)
 566       return ptr;
 567     ptr=ptr->next;
 568   }
 569   return NULL;
 570 }
 571
 572 /* Create a new wavepoint table entry */
 573 static wavepoint_history *wl_new_wavepoint(unsigned short nwid, unsigned char seq, net_local* lp)
 574 {
 575   wavepoint_history *new_wavepoint;
 576
 577 #ifdef WAVELAN_ROAMING_DEBUG
 578   printk(KERN_DEBUG "WaveLAN: New Wavepoint, NWID:%.4X\n",nwid);
 579 #endif
 580
 581   if(lp->wavepoint_table.num_wavepoints==MAX_WAVEPOINTS)
 582     return NULL;
 583
 584   new_wavepoint = kmalloc(sizeof(wavepoint_history),GFP_ATOMIC);
 585   if(new_wavepoint==NULL)
 586     return NULL;
 587
 588   new_wavepoint->nwid=nwid;                       /* New WavePoints NWID */
 589   new_wavepoint->average_fast=0;                    /* Running Averages..*/
 590   new_wavepoint->average_slow=0;
 591   new_wavepoint->qualptr=0;                       /* Start of ringbuffer */
 592   new_wavepoint->last_seq=seq-1;                /* Last sequence no.seen */
 593   memset(new_wavepoint->sigqual,0,WAVEPOINT_HISTORY);/* Empty ringbuffer */
 594
 595   new_wavepoint->next=lp->wavepoint_table.head;/* Add to wavepoint table */
 596   new_wavepoint->prev=NULL;
 597
 598   if(lp->wavepoint_table.head!=NULL)
 599     lp->wavepoint_table.head->prev=new_wavepoint;
 600
 601   lp->wavepoint_table.head=new_wavepoint;
 602
 603   lp->wavepoint_table.num_wavepoints++;     /* no. of visible wavepoints */
 604
 605   return new_wavepoint;
 606 }
 607
 608 /* Remove a wavepoint entry from WavePoint table */
 609 static void wl_del_wavepoint(wavepoint_history *wavepoint, struct net_local *lp)
 610 {
 611   if(wavepoint==NULL)
 612     return;
 613
 614   if(lp->curr_point==wavepoint)
 615     lp->curr_point=NULL;
 616
 617   if(wavepoint->prev!=NULL)
 618     wavepoint->prev->next=wavepoint->next;
 619
 620   if(wavepoint->next!=NULL)
 621     wavepoint->next->prev=wavepoint->prev;
 622
 623   if(lp->wavepoint_table.head==wavepoint)
 624     lp->wavepoint_table.head=wavepoint->next;
 625
 626   lp->wavepoint_table.num_wavepoints--;
 627   kfree(wavepoint);
 628 }
 629
 630 /* Timer callback function - checks WavePoint table for stale entries */
 631 static void wl_cell_expiry(unsigned long data)
 632 {
 633   net_local *lp=(net_local *)data;
 634   wavepoint_history *wavepoint=lp->wavepoint_table.head,*old_point;
 635
 636 #if WAVELAN_ROAMING_DEBUG > 1
 637   printk(KERN_DEBUG "WaveLAN: Wavepoint timeout, dev %s\n",lp->dev->name);
 638 #endif
 639
 640   if(lp->wavepoint_table.locked)
 641     {
 642 #if WAVELAN_ROAMING_DEBUG > 1
 643       printk(KERN_DEBUG "WaveLAN: Wavepoint table locked...\n");
 644 #endif
 645
 646       lp->cell_timer.expires=jiffies+1; /* If table in use, come back later */
 647       add_timer(&lp->cell_timer);
 648       return;
 649     }
 650
 651   while(wavepoint!=NULL)
 652     {
 653       if(time_after(jiffies, wavepoint->last_seen + CELL_TIMEOUT))
 654         {
 655 #ifdef WAVELAN_ROAMING_DEBUG
 656           printk(KERN_DEBUG "WaveLAN: Bye bye %.4X\n",wavepoint->nwid);
 657 #endif
 658
 659           old_point=wavepoint;
 660           wavepoint=wavepoint->next;
 661           wl_del_wavepoint(old_point,lp);
 662         }
 663       else
 664         wavepoint=wavepoint->next;
 665     }
 666   lp->cell_timer.expires=jiffies+CELL_TIMEOUT;
 667   add_timer(&lp->cell_timer);
 668 }
 669
 670 /* Update SNR history of a wavepoint */
 671 static void wl_update_history(wavepoint_history *wavepoint, unsigned char sigqual, unsigned char seq)
 672 {
 673   int i=0,num_missed=0,ptr=0;
 674   int average_fast=0,average_slow=0;
 675
 676   num_missed=(seq-wavepoint->last_seq)%WAVEPOINT_HISTORY;/* Have we missed
 677                                                             any beacons? */
 678   if(num_missed)
 679     for(i=0;i<num_missed;i++)
 680       {
 681         wavepoint->sigqual[wavepoint->qualptr++]=0; /* If so, enter them as 0's */
 682         wavepoint->qualptr %=WAVEPOINT_HISTORY;    /* in the ringbuffer. */
 683       }
 684   wavepoint->last_seen=jiffies;                 /* Add beacon to history */
 685   wavepoint->last_seq=seq;
 686   wavepoint->sigqual[wavepoint->qualptr++]=sigqual;
 687   wavepoint->qualptr %=WAVEPOINT_HISTORY;
 688   ptr=(wavepoint->qualptr-WAVEPOINT_FAST_HISTORY+WAVEPOINT_HISTORY)%WAVEPOINT_HISTORY;
 689
 690   for(i=0;i<WAVEPOINT_FAST_HISTORY;i++)       /* Update running averages */
 691     {
 692       average_fast+=wavepoint->sigqual[ptr++];
 693       ptr %=WAVEPOINT_HISTORY;
 694     }
 695
 696   average_slow=average_fast;
 697   for(i=WAVEPOINT_FAST_HISTORY;i<WAVEPOINT_HISTORY;i++)
 698     {
 699       average_slow+=wavepoint->sigqual[ptr++];
 700       ptr %=WAVEPOINT_HISTORY;
 701     }
 702
 703   wavepoint->average_fast=average_fast/WAVEPOINT_FAST_HISTORY;
 704   wavepoint->average_slow=average_slow/WAVEPOINT_HISTORY;
 705 }
 706
 707 /* Perform a handover to a new WavePoint */
 708 static void wv_roam_handover(wavepoint_history *wavepoint, net_local *lp)
 709 {
 710   unsigned int          base = lp->dev->base_addr;
 711   mm_t                  m;
 712   unsigned long         flags;
 713
 714   if(wavepoint==lp->curr_point)          /* Sanity check... */
 715     {
 716       wv_nwid_filter(!NWID_PROMISC,lp);
 717       return;
 718     }
 719
 720 #ifdef WAVELAN_ROAMING_DEBUG
 721   printk(KERN_DEBUG "WaveLAN: Doing handover to %.4X, dev %s\n",wavepoint->nwid,lp->dev->name);
 722 #endif
 723
 724   /* Disable interrupts & save flags */
 725   spin_lock_irqsave(&lp->spinlock, flags);
 726
 727   m.w.mmw_netw_id_l = wavepoint->nwid & 0xFF;
 728   m.w.mmw_netw_id_h = (wavepoint->nwid & 0xFF00) >> 8;
 729
 730   mmc_write(base, (char *)&m.w.mmw_netw_id_l - (char *)&m, (unsigned char *)&m.w.mmw_netw_id_l, 2);
 731
 732   /* ReEnable interrupts & restore flags */
 733   spin_unlock_irqrestore(&lp->spinlock, flags);
 734
 735   wv_nwid_filter(!NWID_PROMISC,lp);
 736   lp->curr_point=wavepoint;
 737 }
 738
 739 /* Called when a WavePoint beacon is received */
 740 static void wl_roam_gather(struct net_device *  dev,
 741                            u_char *  hdr,   /* Beacon header */
 742                            u_char *  stats) /* SNR, Signal quality
 743                                                       of packet */
 744 {
 745   wavepoint_beacon *beacon= (wavepoint_beacon *)hdr; /* Rcvd. Beacon */
 746   unsigned short nwid=ntohs(beacon->nwid);
 747   unsigned short sigqual=stats[2] & MMR_SGNL_QUAL;   /* SNR of beacon */
 748   wavepoint_history *wavepoint=NULL;                /* WavePoint table entry */
 749   net_local *lp = netdev_priv(dev);              /* Device info */
 750
 751 #ifdef I_NEED_THIS_FEATURE
 752   /* Some people don't need this, some other may need it */
 753   nwid=nwid^ntohs(beacon->domain_id);
 754 #endif
 755
 756 #if WAVELAN_ROAMING_DEBUG > 1
 757   printk(KERN_DEBUG "WaveLAN: beacon, dev %s:\n",dev->name);
 758   printk(KERN_DEBUG "Domain: %.4X NWID: %.4X SigQual=%d\n",ntohs(beacon->domain_id),nwid,sigqual);
 759 #endif
 760
 761   lp->wavepoint_table.locked=1;                            /* <Mutex> */
 762
 763   wavepoint=wl_roam_check(nwid,lp);            /* Find WavePoint table entry */
 764   if(wavepoint==NULL)                    /* If no entry, Create a new one... */
 765     {
 766       wavepoint=wl_new_wavepoint(nwid,beacon->seq,lp);
 767       if(wavepoint==NULL)
 768         goto out;
 769     }
 770   if(lp->curr_point==NULL)             /* If this is the only WavePoint, */
 771     wv_roam_handover(wavepoint, lp);             /* Jump on it! */
 772
 773   wl_update_history(wavepoint, sigqual, beacon->seq); /* Update SNR history
 774                                                          stats. */
 775
 776   if(lp->curr_point->average_slow < SEARCH_THRESH_LOW) /* If our current */
 777     if(!lp->cell_search)                  /* WavePoint is getting faint, */
 778       wv_nwid_filter(NWID_PROMISC,lp);    /* start looking for a new one */
 779
 780   if(wavepoint->average_slow >
 781      lp->curr_point->average_slow + WAVELAN_ROAMING_DELTA)
 782     wv_roam_handover(wavepoint, lp);   /* Handover to a better WavePoint */
 783
 784   if(lp->curr_point->average_slow > SEARCH_THRESH_HIGH) /* If our SNR is */
 785     if(lp->cell_search)  /* getting better, drop out of cell search mode */
 786       wv_nwid_filter(!NWID_PROMISC,lp);
 787
 788 out:
 789   lp->wavepoint_table.locked=0;                        /* </MUTEX>   :-) */
 790 }
 791
 792 /* Test this MAC frame a WavePoint beacon */
 793 static inline int WAVELAN_BEACON(unsigned char *data)
 794 {
 795   wavepoint_beacon *beacon= (wavepoint_beacon *)data;
 796   static const wavepoint_beacon beacon_template={0xaa,0xaa,0x03,0x08,0x00,0x0e,0x20,0x03,0x00};
 797
 798   if(memcmp(beacon,&beacon_template,9)==0)
 799     return 1;
 800   else
 801     return 0;
 802 }
 803 #endif  /* WAVELAN_ROAMING */
 804
 805 /************************ I82593 SUBROUTINES *************************/
 806 /*
 807  * Useful subroutines to manage the Ethernet controller
 808  */
 809
 810 /*------------------------------------------------------------------*/
 811 /*
 812  * Routine to synchronously send a command to the i82593 chip.
 813  * Should be called with interrupts disabled.
 814  * (called by wv_packet_write(), wv_ru_stop(), wv_ru_start(),
 815  *  wv_82593_config() & wv_diag())
 816  */
 817 static int
 818 wv_82593_cmd(struct net_device *        dev,
 819              char *     str,
 820              int        cmd,
 821              int        result)
 822 {
 823   unsigned int  base = dev->base_addr;
 824   int           status;
 825   int           wait_completed;
 826   long          spin;
 827
 828   /* Spin until the chip finishes executing its current command (if any) */
 829   spin = 1000;
 830   do
 831     {
 832       /* Time calibration of the loop */
 833       udelay(10);
 834
 835       /* Read the interrupt register */
 836       outb(OP0_NOP | CR0_STATUS_3, LCCR(base));
 837       status = inb(LCSR(base));
 838     }
 839   while(((status & SR3_EXEC_STATE_MASK) != SR3_EXEC_IDLE) && (spin-- > 0));
 840
 841   /* If the interrupt hasn't been posted */
 842   if (spin < 0) {
 843 #ifdef DEBUG_INTERRUPT_ERROR
 844       printk(KERN_INFO "wv_82593_cmd: %s timeout (previous command), status 0x%02x\n",
 845              str, status);
 846 #endif
 847       return(FALSE);
 848     }
 849
 850   /* Issue the command to the controller */
 851   outb(cmd, LCCR(base));
 852
 853   /* If we don't have to check the result of the command
 854    * Note : this mean that the irq handler will deal with that */
 855   if(result == SR0_NO_RESULT)
 856     return(TRUE);
 857
 858   /* We are waiting for command completion */
 859   wait_completed = TRUE;
 860
 861   /* Busy wait while the LAN controller executes the command. */
 862   spin = 1000;
 863   do
 864     {
 865       /* Time calibration of the loop */
 866       udelay(10);
 867
 868       /* Read the interrupt register */
 869       outb(CR0_STATUS_0 | OP0_NOP, LCCR(base));
 870       status = inb(LCSR(base));
 871
 872       /* Check if there was an interrupt posted */
 873       if((status & SR0_INTERRUPT))
 874         {
 875           /* Acknowledge the interrupt */
 876           outb(CR0_INT_ACK | OP0_NOP, LCCR(base));
 877
 878           /* Check if interrupt is a command completion */
 879           if(((status & SR0_BOTH_RX_TX) != SR0_BOTH_RX_TX) &&
 880              ((status & SR0_BOTH_RX_TX) != 0x0) &&
 881              !(status & SR0_RECEPTION))
 882             {
 883               /* Signal command completion */
 884               wait_completed = FALSE;
 885             }
 886           else
 887             {
 888               /* Note : Rx interrupts will be handled later, because we can
 889                * handle multiple Rx packets at once */
 890 #ifdef DEBUG_INTERRUPT_INFO
 891               printk(KERN_INFO "wv_82593_cmd: not our interrupt\n");
 892 #endif
 893             }
 894         }
 895     }
 896   while(wait_completed && (spin-- > 0));
 897
 898   /* If the interrupt hasn't be posted */
 899   if(wait_completed)
 900     {
 901 #ifdef DEBUG_INTERRUPT_ERROR
 902       printk(KERN_INFO "wv_82593_cmd: %s timeout, status 0x%02x\n",
 903              str, status);
 904 #endif
 905       return(FALSE);
 906     }
 907
 908   /* Check the return code returned by the card (see above) against
 909    * the expected return code provided by the caller */
 910   if((status & SR0_EVENT_MASK) != result)
 911     {
 912 #ifdef DEBUG_INTERRUPT_ERROR
 913       printk(KERN_INFO "wv_82593_cmd: %s failed, status = 0x%x\n",
 914              str, status);
 915 #endif
 916       return(FALSE);
 917     }
 918
 919   return(TRUE);
 920 } /* wv_82593_cmd */
 921
 922 /*------------------------------------------------------------------*/
 923 /*
 924  * This routine does a 593 op-code number 7, and obtains the diagnose
 925  * status for the WaveLAN.
 926  */
 927 static inline int
 928 wv_diag(struct net_device *     dev)
 929 {
 930   return(wv_82593_cmd(dev, "wv_diag(): diagnose",
 931                       OP0_DIAGNOSE, SR0_DIAGNOSE_PASSED));
 932 } /* wv_diag */
 933
 934 /*------------------------------------------------------------------*/
 935 /*
 936  * Routine to read len bytes from the i82593's ring buffer, starting at
 937  * chip address addr. The results read from the chip are stored in buf.
 938  * The return value is the address to use for next the call.
 939  */
 940 static int
 941 read_ringbuf(struct net_device *        dev,
 942              int        addr,
 943              char *     buf,
 944              int        len)
 945 {
 946   unsigned int  base = dev->base_addr;
 947   int           ring_ptr = addr;
 948   int           chunk_len;
 949   char *        buf_ptr = buf;
 950
 951   /* Get all the buffer */
 952   while(len > 0)
 953     {
 954       /* Position the Program I/O Register at the ring buffer pointer */
 955       outb(ring_ptr & 0xff, PIORL(base));
 956       outb(((ring_ptr >> 8) & PIORH_MASK), PIORH(base));
 957
 958       /* First, determine how much we can read without wrapping around the
 959          ring buffer */
 960       if((addr + len) < (RX_BASE + RX_SIZE))
 961         chunk_len = len;
 962       else
 963         chunk_len = RX_BASE + RX_SIZE - addr;
 964       insb(PIOP(base), buf_ptr, chunk_len);
 965       buf_ptr += chunk_len;
 966       len -= chunk_len;
 967       ring_ptr = (ring_ptr - RX_BASE + chunk_len) % RX_SIZE + RX_BASE;
 968     }
 969   return(ring_ptr);
 970 } /* read_ringbuf */
 971
 972 /*------------------------------------------------------------------*/
 973 /*
 974  * Reconfigure the i82593, or at least ask for it...
 975  * Because wv_82593_config use the transmission buffer, we must do it
 976  * when we are sure that there is no transmission, so we do it now
 977  * or in wavelan_packet_xmit() (I can't find any better place,
 978  * wavelan_interrupt is not an option...), so you may experience
 979  * some delay sometime...
 980  */
 981 static void
 982 wv_82593_reconfig(struct net_device *   dev)
 983 {
 984   net_local *           lp = netdev_priv(dev);
 985   struct pcmcia_device *                link = lp->link;
 986   unsigned long         flags;
 987
 988   /* Arm the flag, will be cleard in wv_82593_config() */
 989   lp->reconfig_82593 = TRUE;
 990
 991   /* Check if we can do it now ! */
 992   if((link->open) && (netif_running(dev)) && !(netif_queue_stopped(dev)))
 993     {
 994       spin_lock_irqsave(&lp->spinlock, flags);  /* Disable interrupts */
 995       wv_82593_config(dev);
 996       spin_unlock_irqrestore(&lp->spinlock, flags);     /* Re-enable interrupts */
 997     }
 998   else
 999     {
1000 #ifdef DEBUG_IOCTL_INFO
1001       printk(KERN_DEBUG
1002              "%s: wv_82593_reconfig(): delayed (state = %lX, link = %d)\n",
1003              dev->name, dev->state, link->open);
1004 #endif
1005     }
1006 }
1007
1008 /********************* DEBUG & INFO SUBROUTINES *********************/
1009 /*
1010  * This routines are used in the code to show debug informations.
1011  * Most of the time, it dump the content of hardware structures...
1012  */
1013
1014 #ifdef DEBUG_PSA_SHOW
1015 /*------------------------------------------------------------------*/
1016 /*
1017  * Print the formatted contents of the Parameter Storage Area.
1018  */
1019 static void
1020 wv_psa_show(psa_t *     p)
1021 {
1022   printk(KERN_DEBUG "##### wavelan psa contents: #####\n");
1023   printk(KERN_DEBUG "psa_io_base_addr_1: 0x%02X %02X %02X %02X\n",
1024          p->psa_io_base_addr_1,
1025          p->psa_io_base_addr_2,
1026          p->psa_io_base_addr_3,
1027          p->psa_io_base_addr_4);
1028   printk(KERN_DEBUG "psa_rem_boot_addr_1: 0x%02X %02X %02X\n",
1029          p->psa_rem_boot_addr_1,
1030          p->psa_rem_boot_addr_2,
1031          p->psa_rem_boot_addr_3);
1032   printk(KERN_DEBUG "psa_holi_params: 0x%02x, ", p->psa_holi_params);
1033   printk("psa_int_req_no: %d\n", p->psa_int_req_no);
1034 #ifdef DEBUG_SHOW_UNUSED
1035   printk(KERN_DEBUG "psa_unused0[]: %pM\n", p->psa_unused0);
1036 #endif  /* DEBUG_SHOW_UNUSED */
1037   printk(KERN_DEBUG "psa_univ_mac_addr[]: %pM\n", p->psa_univ_mac_addr);
1038   printk(KERN_DEBUG "psa_local_mac_addr[]: %pM\n", p->psa_local_mac_addr);
1039   printk(KERN_DEBUG "psa_univ_local_sel: %d, ", p->psa_univ_local_sel);
1040   printk("psa_comp_number: %d, ", p->psa_comp_number);
1041   printk("psa_thr_pre_set: 0x%02x\n", p->psa_thr_pre_set);
1042   printk(KERN_DEBUG "psa_feature_select/decay_prm: 0x%02x, ",
1043          p->psa_feature_select);
1044   printk("psa_subband/decay_update_prm: %d\n", p->psa_subband);
1045   printk(KERN_DEBUG "psa_quality_thr: 0x%02x, ", p->psa_quality_thr);
1046   printk("psa_mod_delay: 0x%02x\n", p->psa_mod_delay);
1047   printk(KERN_DEBUG "psa_nwid: 0x%02x%02x, ", p->psa_nwid[0], p->psa_nwid[1]);
1048   printk("psa_nwid_select: %d\n", p->psa_nwid_select);
1049   printk(KERN_DEBUG "psa_encryption_select: %d, ", p->psa_encryption_select);
1050   printk("psa_encryption_key[]: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
1051          p->psa_encryption_key[0],
1052          p->psa_encryption_key[1],
1053          p->psa_encryption_key[2],
1054          p->psa_encryption_key[3],
1055          p->psa_encryption_key[4],
1056          p->psa_encryption_key[5],
1057          p->psa_encryption_key[6],
1058          p->psa_encryption_key[7]);
1059   printk(KERN_DEBUG "psa_databus_width: %d\n", p->psa_databus_width);
1060   printk(KERN_DEBUG "psa_call_code/auto_squelch: 0x%02x, ",
1061          p->psa_call_code[0]);
1062   printk("psa_call_code[]: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1063          p->psa_call_code[0],
1064          p->psa_call_code[1],
1065          p->psa_call_code[2],
1066          p->psa_call_code[3],
1067          p->psa_call_code[4],
1068          p->psa_call_code[5],
1069          p->psa_call_code[6],
1070          p->psa_call_code[7]);
1071 #ifdef DEBUG_SHOW_UNUSED
1072   printk(KERN_DEBUG "psa_reserved[]: %02X:%02X\n",
1073          p->psa_reserved[0],
1074          p->psa_reserved[1]);
1075 #endif  /* DEBUG_SHOW_UNUSED */
1076   printk(KERN_DEBUG "psa_conf_status: %d, ", p->psa_conf_status);
1077   printk("psa_crc: 0x%02x%02x, ", p->psa_crc[0], p->psa_crc[1]);
1078   printk("psa_crc_status: 0x%02x\n", p->psa_crc_status);
1079 } /* wv_psa_show */
1080 #endif  /* DEBUG_PSA_SHOW */
1081
1082 #ifdef DEBUG_MMC_SHOW
1083 /*------------------------------------------------------------------*/
1084 /*
1085  * Print the formatted status of the Modem Management Controller.
1086  * This function need to be completed...
1087  */
1088 static void
1089 wv_mmc_show(struct net_device * dev)
1090 {
1091   unsigned int  base = dev->base_addr;
1092   net_local *   lp = netdev_priv(dev);
1093   mmr_t         m;
1094
1095   /* Basic check */
1096   if(hasr_read(base) & HASR_NO_CLK)
1097     {
1098       printk(KERN_WARNING "%s: wv_mmc_show: modem not connected\n",
1099              dev->name);
1100       return;
1101     }
1102
1103   spin_lock_irqsave(&lp->spinlock, flags);
1104
1105   /* Read the mmc */
1106   mmc_out(base, mmwoff(0, mmw_freeze), 1);
1107   mmc_read(base, 0, (u_char *)&m, sizeof(m));
1108   mmc_out(base, mmwoff(0, mmw_freeze), 0);
1109
1110   /* Don't forget to update statistics */
1111   lp->wstats.discard.nwid += (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l;
1112
1113   spin_unlock_irqrestore(&lp->spinlock, flags);
1114
1115   printk(KERN_DEBUG "##### wavelan modem status registers: #####\n");
1116 #ifdef DEBUG_SHOW_UNUSED
1117   printk(KERN_DEBUG "mmc_unused0[]: %02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n",
1118          m.mmr_unused0[0],
1119          m.mmr_unused0[1],
1120          m.mmr_unused0[2],
1121          m.mmr_unused0[3],
1122          m.mmr_unused0[4],
1123          m.mmr_unused0[5],
1124          m.mmr_unused0[6],
1125          m.mmr_unused0[7]);
1126 #endif  /* DEBUG_SHOW_UNUSED */
1127   printk(KERN_DEBUG "Encryption algorithm: %02X - Status: %02X\n",
1128          m.mmr_des_avail, m.mmr_des_status);
1129 #ifdef DEBUG_SHOW_UNUSED
1130   printk(KERN_DEBUG "mmc_unused1[]: %02X:%02X:%02X:%02X:%02X\n",
1131          m.mmr_unused1[0],
1132          m.mmr_unused1[1],
1133          m.mmr_unused1[2],
1134          m.mmr_unused1[3],
1135          m.mmr_unused1[4]);
1136 #endif  /* DEBUG_SHOW_UNUSED */
1137   printk(KERN_DEBUG "dce_status: 0x%x [%s%s%s%s]\n",
1138          m.mmr_dce_status,
1139          (m.mmr_dce_status & MMR_DCE_STATUS_RX_BUSY) ? "energy detected,":"",
1140          (m.mmr_dce_status & MMR_DCE_STATUS_LOOPT_IND) ?
1141          "loop test indicated," : "",
1142          (m.mmr_dce_status & MMR_DCE_STATUS_TX_BUSY) ? "transmitter on," : "",
1143          (m.mmr_dce_status & MMR_DCE_STATUS_JBR_EXPIRED) ?
1144          "jabber timer expired," : "");
1145   printk(KERN_DEBUG "Dsp ID: %02X\n",
1146          m.mmr_dsp_id);
1147 #ifdef DEBUG_SHOW_UNUSED
1148   printk(KERN_DEBUG "mmc_unused2[]: %02X:%02X\n",
1149          m.mmr_unused2[0],
1150          m.mmr_unused2[1]);
1151 #endif  /* DEBUG_SHOW_UNUSED */
1152   printk(KERN_DEBUG "# correct_nwid: %d, # wrong_nwid: %d\n",
1153          (m.mmr_correct_nwid_h << 8) | m.mmr_correct_nwid_l,
1154          (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l);
1155   printk(KERN_DEBUG "thr_pre_set: 0x%x [current signal %s]\n",
1156          m.mmr_thr_pre_set & MMR_THR_PRE_SET,
1157          (m.mmr_thr_pre_set & MMR_THR_PRE_SET_CUR) ? "above" : "below");
1158   printk(KERN_DEBUG "signal_lvl: %d [%s], ",
1159          m.mmr_signal_lvl & MMR_SIGNAL_LVL,
1160          (m.mmr_signal_lvl & MMR_SIGNAL_LVL_VALID) ? "new msg" : "no new msg");
1161   printk("silence_lvl: %d [%s], ", m.mmr_silence_lvl & MMR_SILENCE_LVL,
1162          (m.mmr_silence_lvl & MMR_SILENCE_LVL_VALID) ? "update done" : "no new update");
1163   printk("sgnl_qual: 0x%x [%s]\n", m.mmr_sgnl_qual & MMR_SGNL_QUAL,
1164          (m.mmr_sgnl_qual & MMR_SGNL_QUAL_ANT) ? "Antenna 1" : "Antenna 0");
1165 #ifdef DEBUG_SHOW_UNUSED
1166   printk(KERN_DEBUG "netw_id_l: %x\n", m.mmr_netw_id_l);
1167 #endif  /* DEBUG_SHOW_UNUSED */
1168 } /* wv_mmc_show */
1169 #endif  /* DEBUG_MMC_SHOW */
1170
1171 #ifdef DEBUG_I82593_SHOW
1172 /*------------------------------------------------------------------*/
1173 /*
1174  * Print the formatted status of the i82593's receive unit.
1175  */
1176 static void
1177 wv_ru_show(struct net_device *  dev)
1178 {
1179   net_local *lp = netdev_priv(dev);
1180
1181   printk(KERN_DEBUG "##### wavelan i82593 receiver status: #####\n");
1182   printk(KERN_DEBUG "ru: rfp %d stop %d", lp->rfp, lp->stop);
1183   /*
1184    * Not implemented yet...
1185    */
1186   printk("\n");
1187 } /* wv_ru_show */
1188 #endif  /* DEBUG_I82593_SHOW */
1189
1190 #ifdef DEBUG_DEVICE_SHOW
1191 /*------------------------------------------------------------------*/
1192 /*
1193  * Print the formatted status of the WaveLAN PCMCIA device driver.
1194  */
1195 static void
1196 wv_dev_show(struct net_device * dev)
1197 {
1198   printk(KERN_DEBUG "dev:");
1199   printk(" state=%lX,", dev->state);
1200   printk(" trans_start=%ld,", dev->trans_start);
1201   printk(" flags=0x%x,", dev->flags);
1202   printk("\n");
1203 } /* wv_dev_show */
1204
1205 /*------------------------------------------------------------------*/
1206 /*
1207  * Print the formatted status of the WaveLAN PCMCIA device driver's
1208  * private information.
1209  */
1210 static void
1211 wv_local_show(struct net_device *       dev)
1212 {
1213   net_local *lp = netdev_priv(dev);
1214
1215   printk(KERN_DEBUG "local:");
1216   /*
1217    * Not implemented yet...
1218    */
1219   printk("\n");
1220 } /* wv_local_show */
1221 #endif  /* DEBUG_DEVICE_SHOW */
1222
1223 #if defined(DEBUG_RX_INFO) || defined(DEBUG_TX_INFO)
1224 /*------------------------------------------------------------------*/
1225 /*
1226  * Dump packet header (and content if necessary) on the screen
1227  */
1228 static void
1229 wv_packet_info(u_char *         p,              /* Packet to dump */
1230                int              length,         /* Length of the packet */
1231                char *           msg1,           /* Name of the device */
1232                char *           msg2)           /* Name of the function */
1233 {
1234   int           i;
1235   int           maxi;
1236
1237   printk(KERN_DEBUG "%s: %s(): dest %pM, length %d\n",
1238          msg1, msg2, p, length);
1239   printk(KERN_DEBUG "%s: %s(): src %pM, type 0x%02X%02X\n",
1240          msg1, msg2, &p[6], p[12], p[13]);
1241
1242 #ifdef DEBUG_PACKET_DUMP
1243
1244   printk(KERN_DEBUG "data=\"");
1245
1246   if((maxi = length) > DEBUG_PACKET_DUMP)
1247     maxi = DEBUG_PACKET_DUMP;
1248   for(i = 14; i < maxi; i++)
1249     if(p[i] >= ' ' && p[i] <= '~')
1250       printk(" %c", p[i]);
1251     else
1252       printk("%02X", p[i]);
1253   if(maxi < length)
1254     printk("..");
1255   printk("\"\n");
1256   printk(KERN_DEBUG "\n");
1257 #endif  /* DEBUG_PACKET_DUMP */
1258 }
1259 #endif  /* defined(DEBUG_RX_INFO) || defined(DEBUG_TX_INFO) */
1260
1261 /*------------------------------------------------------------------*/
1262 /*
1263  * This is the information which is displayed by the driver at startup
1264  * There  is a lot of flag to configure it at your will...
1265  */
1266 static void
1267 wv_init_info(struct net_device *        dev)
1268 {
1269   unsigned int  base = dev->base_addr;
1270   psa_t         psa;
1271
1272   /* Read the parameter storage area */
1273   psa_read(dev, 0, (unsigned char *) &psa, sizeof(psa));
1274
1275 #ifdef DEBUG_PSA_SHOW
1276   wv_psa_show(&psa);
1277 #endif
1278 #ifdef DEBUG_MMC_SHOW
1279   wv_mmc_show(dev);
1280 #endif
1281 #ifdef DEBUG_I82593_SHOW
1282   wv_ru_show(dev);
1283 #endif
1284
1285 #ifdef DEBUG_BASIC_SHOW
1286   /* Now, let's go for the basic stuff */
1287   printk(KERN_NOTICE "%s: WaveLAN: port %#x, irq %d, hw_addr %pM",
1288          dev->name, base, dev->irq, dev->dev_addr);
1289
1290   /* Print current network id */
1291   if(psa.psa_nwid_select)
1292     printk(", nwid 0x%02X-%02X", psa.psa_nwid[0], psa.psa_nwid[1]);
1293   else
1294     printk(", nwid off");
1295
1296   /* If 2.00 card */
1297   if(!(mmc_in(base, mmroff(0, mmr_fee_status)) &
1298        (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY)))
1299     {
1300       unsigned short    freq;
1301
1302       /* Ask the EEprom to read the frequency from the first area */
1303       fee_read(base, 0x00 /* 1st area - frequency... */,
1304                &freq, 1);
1305
1306       /* Print frequency */
1307       printk(", 2.00, %ld", (freq >> 6) + 2400L);
1308
1309       /* Hack !!! */
1310       if(freq & 0x20)
1311         printk(".5");
1312     }
1313   else
1314     {
1315       printk(", PCMCIA, ");
1316       switch (psa.psa_subband)
1317         {
1318         case PSA_SUBBAND_915:
1319           printk("915");
1320           break;
1321         case PSA_SUBBAND_2425:
1322           printk("2425");
1323           break;
1324         case PSA_SUBBAND_2460:
1325           printk("2460");
1326           break;
1327         case PSA_SUBBAND_2484:
1328           printk("2484");
1329           break;
1330         case PSA_SUBBAND_2430_5:
1331           printk("2430.5");
1332           break;
1333         default:
1334           printk("unknown");
1335         }
1336     }
1337
1338   printk(" MHz\n");
1339 #endif  /* DEBUG_BASIC_SHOW */
1340
1341 #ifdef DEBUG_VERSION_SHOW
1342   /* Print version information */
1343   printk(KERN_NOTICE "%s", version);
1344 #endif
1345 } /* wv_init_info */
1346
1347 /********************* IOCTL, STATS & RECONFIG *********************/
1348 /*
1349  * We found here routines that are called by Linux on differents
1350  * occasions after the configuration and not for transmitting data
1351  * These may be called when the user use ifconfig, /proc/net/dev
1352  * or wireless extensions
1353  */
1354
1355
1356 /*------------------------------------------------------------------*/
1357 /*
1358  * Set or clear the multicast filter for this adaptor.
1359  * num_addrs == -1      Promiscuous mode, receive all packets
1360  * num_addrs == 0       Normal mode, clear multicast list
1361  * num_addrs > 0        Multicast mode, receive normal and MC packets,
1362  *                      and do best-effort filtering.
1363  */
1364
1365 static void
1366 wavelan_set_multicast_list(struct net_device *  dev)
1367 {
1368   net_local *   lp = netdev_priv(dev);
1369
1370 #ifdef DEBUG_IOCTL_TRACE
1371   printk(KERN_DEBUG "%s: ->wavelan_set_multicast_list()\n", dev->name);
1372 #endif
1373
1374 #ifdef DEBUG_IOCTL_INFO
1375   printk(KERN_DEBUG "%s: wavelan_set_multicast_list(): setting Rx mode %02X to %d addresses.\n",
1376          dev->name, dev->flags, dev->mc_count);
1377 #endif
1378
1379   if(dev->flags & IFF_PROMISC)
1380     {
1381       /*
1382        * Enable promiscuous mode: receive all packets.
1383        */
1384       if(!lp->promiscuous)
1385         {
1386           lp->promiscuous = 1;
1387           lp->allmulticast = 0;
1388           lp->mc_count = 0;
1389
1390           wv_82593_reconfig(dev);
1391         }
1392     }
1393   else
1394     /* If all multicast addresses
1395      * or too much multicast addresses for the hardware filter */
1396     if((dev->flags & IFF_ALLMULTI) ||
1397        (dev->mc_count > I82593_MAX_MULTICAST_ADDRESSES))
1398       {
1399         /*
1400          * Disable promiscuous mode, but active the all multicast mode
1401          */
1402         if(!lp->allmulticast)
1403           {
1404             lp->promiscuous = 0;
1405             lp->allmulticast = 1;
1406             lp->mc_count = 0;
1407
1408             wv_82593_reconfig(dev);
1409           }
1410       }
1411     else
1412       /* If there is some multicast addresses to send */
1413       if(dev->mc_list != (struct dev_mc_list *) NULL)
1414         {
1415           /*
1416            * Disable promiscuous mode, but receive all packets
1417            * in multicast list
1418            */
1419 #ifdef MULTICAST_AVOID
1420           if(lp->promiscuous || lp->allmulticast ||
1421              (dev->mc_count != lp->mc_count))
1422 #endif
1423             {
1424               lp->promiscuous = 0;
1425               lp->allmulticast = 0;
1426               lp->mc_count = dev->mc_count;
1427
1428               wv_82593_reconfig(dev);
1429             }
1430         }
1431       else
1432         {
1433           /*
1434            * Switch to normal mode: disable promiscuous mode and
1435            * clear the multicast list.
1436            */
1437           if(lp->promiscuous || lp->mc_count == 0)
1438             {
1439               lp->promiscuous = 0;
1440               lp->allmulticast = 0;
1441               lp->mc_count = 0;
1442
1443               wv_82593_reconfig(dev);
1444             }
1445         }
1446 #ifdef DEBUG_IOCTL_TRACE
1447   printk(KERN_DEBUG "%s: <-wavelan_set_multicast_list()\n", dev->name);
1448 #endif
1449 }
1450
1451 /*------------------------------------------------------------------*/
1452 /*
1453  * This function doesn't exist...
1454  * (Note : it was a nice way to test the reconfigure stuff...)
1455  */
1456 #ifdef SET_MAC_ADDRESS
1457 static int
1458 wavelan_set_mac_address(struct net_device *     dev,
1459                         void *          addr)
1460 {
1461   struct sockaddr *     mac = addr;
1462
1463   /* Copy the address */
1464   memcpy(dev->dev_addr, mac->sa_data, WAVELAN_ADDR_SIZE);
1465
1466   /* Reconfig the beast */
1467   wv_82593_reconfig(dev);
1468
1469   return 0;
1470 }
1471 #endif  /* SET_MAC_ADDRESS */
1472
1473
1474 /*------------------------------------------------------------------*/
1475 /*
1476  * Frequency setting (for hardware able of it)
1477  * It's a bit complicated and you don't really want to look into it...
1478  */
1479 static int
1480 wv_set_frequency(u_long         base,   /* i/o port of the card */
1481                  iw_freq *      frequency)
1482 {
1483   const int     BAND_NUM = 10;  /* Number of bands */
1484   long          freq = 0L;      /* offset to 2.4 GHz in .5 MHz */
1485 #ifdef DEBUG_IOCTL_INFO
1486   int           i;
1487 #endif
1488
1489   /* Setting by frequency */
1490   /* Theoritically, you may set any frequency between
1491    * the two limits with a 0.5 MHz precision. In practice,
1492    * I don't want you to have trouble with local
1493    * regulations... */
1494   if((frequency->e == 1) &&
1495      (frequency->m >= (int) 2.412e8) && (frequency->m <= (int) 2.487e8))
1496     {
1497       freq = ((frequency->m / 10000) - 24000L) / 5;
1498     }
1499
1500   /* Setting by channel (same as wfreqsel) */
1501   /* Warning : each channel is 22MHz wide, so some of the channels
1502    * will interfere... */
1503   if((frequency->e == 0) &&
1504      (frequency->m >= 0) && (frequency->m < BAND_NUM))
1505     {
1506       /* Get frequency offset. */
1507       freq = channel_bands[frequency->m] >> 1;
1508     }
1509
1510   /* Verify if the frequency is allowed */
1511   if(freq != 0L)
1512     {
1513       u_short   table[10];      /* Authorized frequency table */
1514
1515       /* Read the frequency table */
1516       fee_read(base, 0x71 /* frequency table */,
1517                table, 10);
1518
1519 #ifdef DEBUG_IOCTL_INFO
1520       printk(KERN_DEBUG "Frequency table :");
1521       for(i = 0; i < 10; i++)
1522         {
1523           printk(" %04X",
1524                  table[i]);
1525         }
1526       printk("\n");
1527 #endif
1528
1529       /* Look in the table if the frequency is allowed */
1530       if(!(table[9 - ((freq - 24) / 16)] &
1531            (1 << ((freq - 24) % 16))))
1532         return -EINVAL;         /* not allowed */
1533     }
1534   else
1535     return -EINVAL;
1536
1537   /* If we get a usable frequency */
1538   if(freq != 0L)
1539     {
1540       unsigned short    area[16];
1541       unsigned short    dac[2];
1542       unsigned short    area_verify[16];
1543       unsigned short    dac_verify[2];
1544       /* Corresponding gain (in the power adjust value table)
1545        * see AT&T Wavelan Data Manual, REF 407-024689/E, page 3-8
1546        * & WCIN062D.DOC, page 6.2.9 */
1547       unsigned short    power_limit[] = { 40, 80, 120, 160, 0 };
1548       int               power_band = 0;         /* Selected band */
1549       unsigned short    power_adjust;           /* Correct value */
1550
1551       /* Search for the gain */
1552       power_band = 0;
1553       while((freq > power_limit[power_band]) &&
1554             (power_limit[++power_band] != 0))
1555         ;
1556
1557       /* Read the first area */
1558       fee_read(base, 0x00,
1559                area, 16);
1560
1561       /* Read the DAC */
1562       fee_read(base, 0x60,
1563                dac, 2);
1564
1565       /* Read the new power adjust value */
1566       fee_read(base, 0x6B - (power_band >> 1),
1567                &power_adjust, 1);
1568       if(power_band & 0x1)
1569         power_adjust >>= 8;
1570       else
1571         power_adjust &= 0xFF;
1572
1573 #ifdef DEBUG_IOCTL_INFO
1574       printk(KERN_DEBUG "Wavelan EEprom Area 1 :");
1575       for(i = 0; i < 16; i++)
1576         {
1577           printk(" %04X",
1578                  area[i]);
1579         }
1580       printk("\n");
1581
1582       printk(KERN_DEBUG "Wavelan EEprom DAC : %04X %04X\n",
1583              dac[0], dac[1]);
1584 #endif
1585
1586       /* Frequency offset (for info only...) */
1587       area[0] = ((freq << 5) & 0xFFE0) | (area[0] & 0x1F);
1588
1589       /* Receiver Principle main divider coefficient */
1590       area[3] = (freq >> 1) + 2400L - 352L;
1591       area[2] = ((freq & 0x1) << 4) | (area[2] & 0xFFEF);
1592
1593       /* Transmitter Main divider coefficient */
1594       area[13] = (freq >> 1) + 2400L;
1595       area[12] = ((freq & 0x1) << 4) | (area[2] & 0xFFEF);
1596
1597       /* Others part of the area are flags, bit streams or unused... */
1598
1599       /* Set the value in the DAC */
1600       dac[1] = ((power_adjust >> 1) & 0x7F) | (dac[1] & 0xFF80);
1601       dac[0] = ((power_adjust & 0x1) << 4) | (dac[0] & 0xFFEF);
1602
1603       /* Write the first area */
1604       fee_write(base, 0x00,
1605                 area, 16);
1606
1607       /* Write the DAC */
1608       fee_write(base, 0x60,
1609                 dac, 2);
1610
1611       /* We now should verify here that the EEprom writing was ok */
1612
1613       /* ReRead the first area */
1614       fee_read(base, 0x00,
1615                area_verify, 16);
1616
1617       /* ReRead the DAC */
1618       fee_read(base, 0x60,
1619                dac_verify, 2);
1620
1621       /* Compare */
1622       if(memcmp(area, area_verify, 16 * 2) ||
1623          memcmp(dac, dac_verify, 2 * 2))
1624         {
1625 #ifdef DEBUG_IOCTL_ERROR
1626           printk(KERN_INFO "Wavelan: wv_set_frequency : unable to write new frequency to EEprom (?)\n");
1627 #endif
1628           return -EOPNOTSUPP;
1629         }
1630
1631       /* We must download the frequency parameters to the
1632        * synthetisers (from the EEprom - area 1)
1633        * Note : as the EEprom is auto decremented, we set the end
1634        * if the area... */
1635       mmc_out(base, mmwoff(0, mmw_fee_addr), 0x0F);
1636       mmc_out(base, mmwoff(0, mmw_fee_ctrl),
1637               MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD);
1638
1639       /* Wait until the download is finished */
1640       fee_wait(base, 100, 100);
1641
1642       /* We must now download the power adjust value (gain) to
1643        * the synthetisers (from the EEprom - area 7 - DAC) */
1644       mmc_out(base, mmwoff(0, mmw_fee_addr), 0x61);
1645       mmc_out(base, mmwoff(0, mmw_fee_ctrl),
1646               MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD);
1647
1648       /* Wait until the download is finished */
1649       fee_wait(base, 100, 100);
1650
1651 #ifdef DEBUG_IOCTL_INFO
1652       /* Verification of what we have done... */
1653
1654       printk(KERN_DEBUG "Wavelan EEprom Area 1 :");
1655       for(i = 0; i < 16; i++)
1656         {
1657           printk(" %04X",
1658                  area_verify[i]);
1659         }
1660       printk("\n");
1661
1662       printk(KERN_DEBUG "Wavelan EEprom DAC : %04X %04X\n",
1663              dac_verify[0], dac_verify[1]);
1664 #endif
1665
1666       return 0;
1667     }
1668   else
1669     return -EINVAL;             /* Bah, never get there... */
1670 }
1671
1672 /*------------------------------------------------------------------*/
1673 /*
1674  * Give the list of available frequencies
1675  */
1676 static int
1677 wv_frequency_list(u_long        base,   /* i/o port of the card */
1678                   iw_freq *     list,   /* List of frequency to fill */
1679                   int           max)    /* Maximum number of frequencies */
1680 {
1681   u_short       table[10];      /* Authorized frequency table */
1682   long          freq = 0L;      /* offset to 2.4 GHz in .5 MHz + 12 MHz */
1683   int           i;              /* index in the table */
1684   const int     BAND_NUM = 10;  /* Number of bands */
1685   int           c = 0;          /* Channel number */
1686
1687   /* Read the frequency table */
1688   fee_read(base, 0x71 /* frequency table */,
1689            table, 10);
1690
1691   /* Look all frequencies */
1692   i = 0;
1693   for(freq = 0; freq < 150; freq++)
1694     /* Look in the table if the frequency is allowed */
1695     if(table[9 - (freq / 16)] & (1 << (freq % 16)))
1696       {
1697         /* Compute approximate channel number */
1698         while((((channel_bands[c] >> 1) - 24) < freq) &&
1699               (c < BAND_NUM))
1700           c++;
1701         list[i].i = c;  /* Set the list index */
1702
1703         /* put in the list */
1704         list[i].m = (((freq + 24) * 5) + 24000L) * 10000;
1705         list[i++].e = 1;
1706
1707         /* Check number */
1708         if(i >= max)
1709           return(i);
1710       }
1711
1712   return(i);
1713 }
1714
1715 #ifdef IW_WIRELESS_SPY
1716 /*------------------------------------------------------------------*/
1717 /*
1718  * Gather wireless spy statistics : for each packet, compare the source
1719  * address with out list, and if match, get the stats...
1720  * Sorry, but this function really need wireless extensions...
1721  */
1722 static inline void
1723 wl_spy_gather(struct net_device *       dev,
1724               u_char *  mac,            /* MAC address */
1725               u_char *  stats)          /* Statistics to gather */
1726 {
1727   struct iw_quality wstats;
1728
1729   wstats.qual = stats[2] & MMR_SGNL_QUAL;
1730   wstats.level = stats[0] & MMR_SIGNAL_LVL;
1731   wstats.noise = stats[1] & MMR_SILENCE_LVL;
1732   wstats.updated = 0x7;
1733
1734   /* Update spy records */
1735   wireless_spy_update(dev, mac, &wstats);
1736 }
1737 #endif  /* IW_WIRELESS_SPY */
1738
1739 #ifdef HISTOGRAM
1740 /*------------------------------------------------------------------*/
1741 /*
1742  * This function calculate an histogram on the signal level.
1743  * As the noise is quite constant, it's like doing it on the SNR.
1744  * We have defined a set of interval (lp->his_range), and each time
1745  * the level goes in that interval, we increment the count (lp->his_sum).
1746  * With this histogram you may detect if one wavelan is really weak,
1747  * or you may also calculate the mean and standard deviation of the level...
1748  */
1749 static inline void
1750 wl_his_gather(struct net_device *       dev,
1751               u_char *  stats)          /* Statistics to gather */
1752 {
1753   net_local *   lp = netdev_priv(dev);
1754   u_char        level = stats[0] & MMR_SIGNAL_LVL;
1755   int           i;
1756
1757   /* Find the correct interval */
1758   i = 0;
1759   while((i < (lp->his_number - 1)) && (level >= lp->his_range[i++]))
1760     ;
1761
1762   /* Increment interval counter */
1763   (lp->his_sum[i])++;
1764 }
1765 #endif  /* HISTOGRAM */
1766
1767 static void wl_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1768 {
1769         strncpy(info->driver, "wavelan_cs", sizeof(info->driver)-1);
1770 }
1771
1772 static const struct ethtool_ops ops = {
1773         .get_drvinfo = wl_get_drvinfo
1774 };
1775
1776 /*------------------------------------------------------------------*/
1777 /*
1778  * Wireless Handler : get protocol name
1779  */
1780 static int wavelan_get_name(struct net_device *dev,
1781                             struct iw_request_info *info,
1782                             union iwreq_data *wrqu,
1783                             char *extra)
1784 {
1785         strcpy(wrqu->name, "WaveLAN");
1786         return 0;
1787 }
1788
1789 /*------------------------------------------------------------------*/
1790 /*
1791  * Wireless Handler : set NWID
1792  */
1793 static int wavelan_set_nwid(struct net_device *dev,
1794                             struct iw_request_info *info,
1795                             union iwreq_data *wrqu,
1796                             char *extra)
1797 {
1798         unsigned int base = dev->base_addr;
1799         net_local *lp = netdev_priv(dev);
1800         psa_t psa;
1801         mm_t m;
1802         unsigned long flags;
1803         int ret = 0;
1804
1805         /* Disable interrupts and save flags. */
1806         spin_lock_irqsave(&lp->spinlock, flags);
1807
1808         /* Set NWID in WaveLAN. */
1809         if (!wrqu->nwid.disabled) {
1810                 /* Set NWID in psa */
1811                 psa.psa_nwid[0] = (wrqu->nwid.value & 0xFF00) >> 8;
1812                 psa.psa_nwid[1] = wrqu->nwid.value & 0xFF;
1813                 psa.psa_nwid_select = 0x01;
1814                 psa_write(dev,
1815                           (char *) psa.psa_nwid - (char *) &psa,
1816                           (unsigned char *) psa.psa_nwid, 3);
1817
1818                 /* Set NWID in mmc. */
1819                 m.w.mmw_netw_id_l = psa.psa_nwid[1];
1820                 m.w.mmw_netw_id_h = psa.psa_nwid[0];
1821                 mmc_write(base,
1822                           (char *) &m.w.mmw_netw_id_l -
1823                           (char *) &m,
1824                           (unsigned char *) &m.w.mmw_netw_id_l, 2);
1825                 mmc_out(base, mmwoff(0, mmw_loopt_sel), 0x00);
1826         } else {
1827                 /* Disable NWID in the psa. */
1828                 psa.psa_nwid_select = 0x00;
1829                 psa_write(dev,
1830                           (char *) &psa.psa_nwid_select -
1831                           (char *) &psa,
1832                           (unsigned char *) &psa.psa_nwid_select,
1833                           1);
1834
1835                 /* Disable NWID in the mmc (no filtering). */
1836                 mmc_out(base, mmwoff(0, mmw_loopt_sel),
1837                         MMW_LOOPT_SEL_DIS_NWID);
1838         }
1839         /* update the Wavelan checksum */
1840         update_psa_checksum(dev);
1841
1842         /* Enable interrupts and restore flags. */
1843         spin_unlock_irqrestore(&lp->spinlock, flags);
1844
1845         return ret;
1846 }
1847
1848 /*------------------------------------------------------------------*/
1849 /*
1850  * Wireless Handler : get NWID
1851  */
1852 static int wavelan_get_nwid(struct net_device *dev,
1853                             struct iw_request_info *info,
1854                             union iwreq_data *wrqu,
1855                             char *extra)
1856 {
1857         net_local *lp = netdev_priv(dev);
1858         psa_t psa;
1859         unsigned long flags;
1860         int ret = 0;
1861
1862         /* Disable interrupts and save flags. */
1863         spin_lock_irqsave(&lp->spinlock, flags);
1864
1865         /* Read the NWID. */
1866         psa_read(dev,
1867                  (char *) psa.psa_nwid - (char *) &psa,
1868                  (unsigned char *) psa.psa_nwid, 3);
1869         wrqu->nwid.value = (psa.psa_nwid[0] << 8) + psa.psa_nwid[1];
1870         wrqu->nwid.disabled = !(psa.psa_nwid_select);
1871         wrqu->nwid.fixed = 1;   /* Superfluous */
1872
1873         /* Enable interrupts and restore flags. */
1874         spin_unlock_irqrestore(&lp->spinlock, flags);
1875
1876         return ret;
1877 }
1878
1879 /*------------------------------------------------------------------*/
1880 /*
1881  * Wireless Handler : set frequency
1882  */
1883 static int wavelan_set_freq(struct net_device *dev,
1884                             struct iw_request_info *info,
1885                             union iwreq_data *wrqu,
1886                             char *extra)
1887 {
1888         unsigned int base = dev->base_addr;
1889         net_local *lp = netdev_priv(dev);
1890         unsigned long flags;
1891         int ret;
1892
1893         /* Disable interrupts and save flags. */
1894         spin_lock_irqsave(&lp->spinlock, flags);
1895
1896         /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable). */
1897         if (!(mmc_in(base, mmroff(0, mmr_fee_status)) &
1898               (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY)))
1899                 ret = wv_set_frequency(base, &(wrqu->freq));
1900         else
1901                 ret = -EOPNOTSUPP;
1902
1903         /* Enable interrupts and restore flags. */
1904         spin_unlock_irqrestore(&lp->spinlock, flags);
1905
1906         return ret;
1907 }
1908
1909 /*------------------------------------------------------------------*/
1910 /*
1911  * Wireless Handler : get frequency
1912  */
1913 static int wavelan_get_freq(struct net_device *dev,
1914                             struct iw_request_info *info,
1915                             union iwreq_data *wrqu,
1916                             char *extra)
1917 {
1918         unsigned int base = dev->base_addr;
1919         net_local *lp = netdev_priv(dev);
1920         psa_t psa;
1921         unsigned long flags;
1922         int ret = 0;
1923
1924         /* Disable interrupts and save flags. */
1925         spin_lock_irqsave(&lp->spinlock, flags);
1926
1927         /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable).
1928          * Does it work for everybody, especially old cards? */
1929         if (!(mmc_in(base, mmroff(0, mmr_fee_status)) &
1930               (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) {
1931                 unsigned short freq;
1932
1933                 /* Ask the EEPROM to read the frequency from the first area. */
1934                 fee_read(base, 0x00, &freq, 1);
1935                 wrqu->freq.m = ((freq >> 5) * 5 + 24000L) * 10000;
1936                 wrqu->freq.e = 1;
1937         } else {
1938                 psa_read(dev,
1939                          (char *) &psa.psa_subband - (char *) &psa,
1940                          (unsigned char *) &psa.psa_subband, 1);
1941
1942                 if (psa.psa_subband <= 4) {
1943                         wrqu->freq.m = fixed_bands[psa.psa_subband];
1944                         wrqu->freq.e = (psa.psa_subband != 0);
1945                 } else
1946                         ret = -EOPNOTSUPP;
1947         }
1948
1949         /* Enable interrupts and restore flags. */
1950         spin_unlock_irqrestore(&lp->spinlock, flags);
1951
1952         return ret;
1953 }
1954
1955 /*------------------------------------------------------------------*/
1956 /*
1957  * Wireless Handler : set level threshold
1958  */
1959 static int wavelan_set_sens(struct net_device *dev,
1960                             struct iw_request_info *info,
1961                             union iwreq_data *wrqu,
1962                             char *extra)
1963 {
1964         unsigned int base = dev->base_addr;
1965         net_local *lp = netdev_priv(dev);
1966         psa_t psa;
1967         unsigned long flags;
1968         int ret = 0;
1969
1970         /* Disable interrupts and save flags. */
1971         spin_lock_irqsave(&lp->spinlock, flags);
1972
1973         /* Set the level threshold. */
1974         /* We should complain loudly if wrqu->sens.fixed = 0, because we
1975          * can't set auto mode... */
1976         psa.psa_thr_pre_set = wrqu->sens.value & 0x3F;
1977         psa_write(dev,
1978                   (char *) &psa.psa_thr_pre_set - (char *) &psa,
1979                   (unsigned char *) &psa.psa_thr_pre_set, 1);
1980         /* update the Wavelan checksum */
1981         update_psa_checksum(dev);
1982         mmc_out(base, mmwoff(0, mmw_thr_pre_set),
1983                 psa.psa_thr_pre_set);
1984
1985         /* Enable interrupts and restore flags. */
1986         spin_unlock_irqrestore(&lp->spinlock, flags);
1987
1988         return ret;
1989 }
1990
1991 /*------------------------------------------------------------------*/
1992 /*
1993  * Wireless Handler : get level threshold
1994  */
1995 static int wavelan_get_sens(struct net_device *dev,
1996                             struct iw_request_info *info,
1997                             union iwreq_data *wrqu,
1998                             char *extra)
1999 {
2000         net_local *lp = netdev_priv(dev);
2001         psa_t psa;
2002         unsigned long flags;
2003         int ret = 0;
2004
2005         /* Disable interrupts and save flags. */
2006         spin_lock_irqsave(&lp->spinlock, flags);
2007
2008         /* Read the level threshold. */
2009         psa_read(dev,
2010                  (char *) &psa.psa_thr_pre_set - (char *) &psa,
2011                  (unsigned char *) &psa.psa_thr_pre_set, 1);
2012         wrqu->sens.value = psa.psa_thr_pre_set & 0x3F;
2013         wrqu->sens.fixed = 1;
2014
2015         /* Enable interrupts and restore flags. */
2016         spin_unlock_irqrestore(&lp->spinlock, flags);
2017
2018         return ret;
2019 }
2020
2021 /*------------------------------------------------------------------*/
2022 /*
2023  * Wireless Handler : set encryption key
2024  */
2025 static int wavelan_set_encode(struct net_device *dev,
2026                               struct iw_request_info *info,
2027                               union iwreq_data *wrqu,
2028                               char *extra)
2029 {
2030         unsigned int base = dev->base_addr;
2031         net_local *lp = netdev_priv(dev);
2032         unsigned long flags;
2033         psa_t psa;
2034         int ret = 0;
2035
2036         /* Disable interrupts and save flags. */
2037         spin_lock_irqsave(&lp->spinlock, flags);
2038
2039         /* Check if capable of encryption */
2040         if (!mmc_encr(base)) {
2041                 ret = -EOPNOTSUPP;
2042         }
2043
2044         /* Check the size of the key */
2045         if((wrqu->encoding.length != 8) && (wrqu->encoding.length != 0)) {
2046                 ret = -EINVAL;
2047         }
2048
2049         if(!ret) {
2050                 /* Basic checking... */
2051                 if (wrqu->encoding.length == 8) {
2052                         /* Copy the key in the driver */
2053                         memcpy(psa.psa_encryption_key, extra,
2054                                wrqu->encoding.length);
2055                         psa.psa_encryption_select = 1;
2056
2057                         psa_write(dev,
2058                                   (char *) &psa.psa_encryption_select -
2059                                   (char *) &psa,
2060                                   (unsigned char *) &psa.
2061                                   psa_encryption_select, 8 + 1);
2062
2063                         mmc_out(base, mmwoff(0, mmw_encr_enable),
2064                                 MMW_ENCR_ENABLE_EN | MMW_ENCR_ENABLE_MODE);
2065                         mmc_write(base, mmwoff(0, mmw_encr_key),
2066                                   (unsigned char *) &psa.
2067                                   psa_encryption_key, 8);
2068                 }
2069
2070                 /* disable encryption */
2071                 if (wrqu->encoding.flags & IW_ENCODE_DISABLED) {
2072                         psa.psa_encryption_select = 0;
2073                         psa_write(dev,
2074                                   (char *) &psa.psa_encryption_select -
2075                                   (char *) &psa,
2076                                   (unsigned char *) &psa.
2077                                   psa_encryption_select, 1);
2078
2079                         mmc_out(base, mmwoff(0, mmw_encr_enable), 0);
2080                 }
2081                 /* update the Wavelan checksum */
2082                 update_psa_checksum(dev);
2083         }
2084
2085         /* Enable interrupts and restore flags. */
2086         spin_unlock_irqrestore(&lp->spinlock, flags);
2087
2088         return ret;
2089 }
2090
2091 /*------------------------------------------------------------------*/
2092 /*
2093  * Wireless Handler : get encryption key
2094  */
2095 static int wavelan_get_encode(struct net_device *dev,
2096                               struct iw_request_info *info,
2097                               union iwreq_data *wrqu,
2098                               char *extra)
2099 {
2100         unsigned int base = dev->base_addr;
2101         net_local *lp = netdev_priv(dev);
2102         psa_t psa;
2103         unsigned long flags;
2104         int ret = 0;
2105
2106         /* Disable interrupts and save flags. */
2107         spin_lock_irqsave(&lp->spinlock, flags);
2108
2109         /* Check if encryption is available */
2110         if (!mmc_encr(base)) {
2111                 ret = -EOPNOTSUPP;
2112         } else {
2113                 /* Read the encryption key */
2114                 psa_read(dev,
2115                          (char *) &psa.psa_encryption_select -
2116                          (char *) &psa,
2117                          (unsigned char *) &psa.
2118                          psa_encryption_select, 1 + 8);
2119
2120                 /* encryption is enabled ? */
2121                 if (psa.psa_encryption_select)
2122                         wrqu->encoding.flags = IW_ENCODE_ENABLED;
2123                 else
2124                         wrqu->encoding.flags = IW_ENCODE_DISABLED;
2125                 wrqu->encoding.flags |= mmc_encr(base);
2126
2127                 /* Copy the key to the user buffer */
2128                 wrqu->encoding.length = 8;
2129                 memcpy(extra, psa.psa_encryption_key, wrqu->encoding.length);
2130         }
2131
2132         /* Enable interrupts and restore flags. */
2133         spin_unlock_irqrestore(&lp->spinlock, flags);
2134
2135         return ret;
2136 }
2137
2138 #ifdef WAVELAN_ROAMING_EXT
2139 /*------------------------------------------------------------------*/
2140 /*
2141  * Wireless Handler : set ESSID (domain)
2142  */
2143 static int wavelan_set_essid(struct net_device *dev,
2144                              struct iw_request_info *info,
2145                              union iwreq_data *wrqu,
2146                              char *extra)
2147 {
2148         net_local *lp = netdev_priv(dev);
2149         unsigned long flags;
2150         int ret = 0;
2151
2152         /* Disable interrupts and save flags. */
2153         spin_lock_irqsave(&lp->spinlock, flags);
2154
2155         /* Check if disable */
2156         if(wrqu->data.flags == 0)
2157                 lp->filter_domains = 0;
2158         else {
2159                 char    essid[IW_ESSID_MAX_SIZE + 1];
2160                 char *  endp;
2161
2162                 /* Terminate the string */
2163                 memcpy(essid, extra, wrqu->data.length);
2164                 essid[IW_ESSID_MAX_SIZE] = '\0';
2165
2166 #ifdef DEBUG_IOCTL_INFO
2167                 printk(KERN_DEBUG "SetEssid : ``%s''\n", essid);
2168 #endif  /* DEBUG_IOCTL_INFO */
2169
2170                 /* Convert to a number (note : Wavelan specific) */
2171                 lp->domain_id = simple_strtoul(essid, &endp, 16);
2172                 /* Has it worked  ? */
2173                 if(endp > essid)
2174                         lp->filter_domains = 1;
2175                 else {
2176                         lp->filter_domains = 0;
2177                         ret = -EINVAL;
2178                 }
2179         }
2180
2181         /* Enable interrupts and restore flags. */
2182         spin_unlock_irqrestore(&lp->spinlock, flags);
2183
2184         return ret;
2185 }
2186
2187 /*------------------------------------------------------------------*/
2188 /*
2189  * Wireless Handler : get ESSID (domain)
2190  */
2191 static int wavelan_get_essid(struct net_device *dev,
2192                              struct iw_request_info *info,
2193                              union iwreq_data *wrqu,
2194                              char *extra)
2195 {
2196         net_local *lp = netdev_priv(dev);
2197
2198         /* Is the domain ID active ? */
2199         wrqu->data.flags = lp->filter_domains;
2200
2201         /* Copy Domain ID into a string (Wavelan specific) */
2202         /* Sound crazy, be we can't have a snprintf in the kernel !!! */
2203         sprintf(extra, "%lX", lp->domain_id);
2204         extra[IW_ESSID_MAX_SIZE] = '\0';
2205
2206         /* Set the length */
2207         wrqu->data.length = strlen(extra);
2208
2209         return 0;
2210 }
2211
2212 /*------------------------------------------------------------------*/
2213 /*
2214  * Wireless Handler : set AP address
2215  */
2216 static int wavelan_set_wap(struct net_device *dev,
2217                            struct iw_request_info *info,
2218                            union iwreq_data *wrqu,
2219                            char *extra)
2220 {
2221 #ifdef DEBUG_IOCTL_INFO
2222         printk(KERN_DEBUG "Set AP to : %pM\n", wrqu->ap_addr.sa_data);
2223 #endif  /* DEBUG_IOCTL_INFO */
2224
2225         return -EOPNOTSUPP;
2226 }
2227
2228 /*------------------------------------------------------------------*/
2229 /*
2230  * Wireless Handler : get AP address
2231  */
2232 static int wavelan_get_wap(struct net_device *dev,
2233                            struct iw_request_info *info,
2234                            union iwreq_data *wrqu,
2235                            char *extra)
2236 {
2237         /* Should get the real McCoy instead of own Ethernet address */
2238         memcpy(wrqu->ap_addr.sa_data, dev->dev_addr, WAVELAN_ADDR_SIZE);
2239         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
2240
2241         return -EOPNOTSUPP;
2242 }
2243 #endif  /* WAVELAN_ROAMING_EXT */
2244
2245 #ifdef WAVELAN_ROAMING
2246 /*------------------------------------------------------------------*/
2247 /*
2248  * Wireless Handler : set mode
2249  */
2250 static int wavelan_set_mode(struct net_device *dev,
2251                             struct iw_request_info *info,
2252                             union iwreq_data *wrqu,
2253                             char *extra)
2254 {
2255         net_local *lp = netdev_priv(dev);
2256         unsigned long flags;
2257         int ret = 0;
2258
2259         /* Disable interrupts and save flags. */
2260         spin_lock_irqsave(&lp->spinlock, flags);
2261
2262         /* Check mode */
2263         switch(wrqu->mode) {
2264         case IW_MODE_ADHOC:
2265                 if(do_roaming) {
2266                         wv_roam_cleanup(dev);
2267                         do_roaming = 0;
2268                 }
2269                 break;
2270         case IW_MODE_INFRA:
2271                 if(!do_roaming) {
2272                         wv_roam_init(dev);
2273                         do_roaming = 1;
2274                 }
2275                 break;
2276         default:
2277                 ret = -EINVAL;
2278         }
2279
2280         /* Enable interrupts and restore flags. */
2281         spin_unlock_irqrestore(&lp->spinlock, flags);
2282
2283         return ret;
2284 }
2285
2286 /*------------------------------------------------------------------*/
2287 /*
2288  * Wireless Handler : get mode
2289  */
2290 static int wavelan_get_mode(struct net_device *dev,
2291                             struct iw_request_info *info,
2292                             union iwreq_data *wrqu,
2293                             char *extra)
2294 {
2295         if(do_roaming)
2296                 wrqu->mode = IW_MODE_INFRA;
2297         else
2298                 wrqu->mode = IW_MODE_ADHOC;
2299
2300         return 0;
2301 }
2302 #endif  /* WAVELAN_ROAMING */
2303
2304 /*------------------------------------------------------------------*/
2305 /*
2306  * Wireless Handler : get range info
2307  */
2308 static int wavelan_get_range(struct net_device *dev,
2309                              struct iw_request_info *info,
2310                              union iwreq_data *wrqu,
2311                              char *extra)
2312 {
2313         unsigned int base = dev->base_addr;
2314         net_local *lp = netdev_priv(dev);
2315         struct iw_range *range = (struct iw_range *) extra;
2316         unsigned long flags;
2317         int ret = 0;
2318
2319         /* Set the length (very important for backward compatibility) */
2320         wrqu->data.length = sizeof(struct iw_range);
2321
2322         /* Set all the info we don't care or don't know about to zero */
2323         memset(range, 0, sizeof(struct iw_range));
2324
2325         /* Set the Wireless Extension versions */
2326         range->we_version_compiled = WIRELESS_EXT;
2327         range->we_version_source = 9;
2328
2329         /* Set information in the range struct.  */
2330         range->throughput = 1.4 * 1000 * 1000;  /* don't argue on this ! */
2331         range->min_nwid = 0x0000;
2332         range->max_nwid = 0xFFFF;
2333
2334         range->sensitivity = 0x3F;
2335         range->max_qual.qual = MMR_SGNL_QUAL;
2336         range->max_qual.level = MMR_SIGNAL_LVL;
2337         range->max_qual.noise = MMR_SILENCE_LVL;
2338         range->avg_qual.qual = MMR_SGNL_QUAL; /* Always max */
2339         /* Need to get better values for those two */
2340         range->avg_qual.level = 30;
2341         range->avg_qual.noise = 8;
2342
2343         range->num_bitrates = 1;
2344         range->bitrate[0] = 2000000;    /* 2 Mb/s */
2345
2346         /* Event capability (kernel + driver) */
2347         range->event_capa[0] = (IW_EVENT_CAPA_MASK(0x8B02) |
2348                                 IW_EVENT_CAPA_MASK(0x8B04) |
2349                                 IW_EVENT_CAPA_MASK(0x8B06));
2350         range->event_capa[1] = IW_EVENT_CAPA_K_1;
2351
2352         /* Disable interrupts and save flags. */
2353         spin_lock_irqsave(&lp->spinlock, flags);
2354
2355         /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable). */
2356         if (!(mmc_in(base, mmroff(0, mmr_fee_status)) &
2357               (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY))) {
2358                 range->num_channels = 10;
2359                 range->num_frequency = wv_frequency_list(base, range->freq,
2360                                                         IW_MAX_FREQUENCIES);
2361         } else
2362                 range->num_channels = range->num_frequency = 0;
2363
2364         /* Encryption supported ? */
2365         if (mmc_encr(base)) {
2366                 range->encoding_size[0] = 8;    /* DES = 64 bits key */
2367                 range->num_encoding_sizes = 1;
2368                 range->max_encoding_tokens = 1; /* Only one key possible */
2369         } else {
2370                 range->num_encoding_sizes = 0;
2371                 range->max_encoding_tokens = 0;
2372         }
2373
2374         /* Enable interrupts and restore flags. */
2375         spin_unlock_irqrestore(&lp->spinlock, flags);
2376
2377         return ret;
2378 }
2379
2380 /*------------------------------------------------------------------*/
2381 /*
2382  * Wireless Private Handler : set quality threshold
2383  */
2384 static int wavelan_set_qthr(struct net_device *dev,
2385                             struct iw_request_info *info,
2386                             union iwreq_data *wrqu,
2387                             char *extra)
2388 {
2389         unsigned int base = dev->base_addr;
2390         net_local *lp = netdev_priv(dev);
2391         psa_t psa;
2392         unsigned long flags;
2393
2394         /* Disable interrupts and save flags. */
2395         spin_lock_irqsave(&lp->spinlock, flags);
2396
2397         psa.psa_quality_thr = *(extra) & 0x0F;
2398         psa_write(dev,
2399                   (char *) &psa.psa_quality_thr - (char *) &psa,
2400                   (unsigned char *) &psa.psa_quality_thr, 1);
2401         /* update the Wavelan checksum */
2402         update_psa_checksum(dev);
2403         mmc_out(base, mmwoff(0, mmw_quality_thr),
2404                 psa.psa_quality_thr);
2405
2406         /* Enable interrupts and restore flags. */
2407         spin_unlock_irqrestore(&lp->spinlock, flags);
2408
2409         return 0;
2410 }
2411
2412 /*------------------------------------------------------------------*/
2413 /*
2414  * Wireless Private Handler : get quality threshold
2415  */
2416 static int wavelan_get_qthr(struct net_device *dev,
2417                             struct iw_request_info *info,
2418                             union iwreq_data *wrqu,
2419                             char *extra)
2420 {
2421         net_local *lp = netdev_priv(dev);
2422         psa_t psa;
2423         unsigned long flags;
2424
2425         /* Disable interrupts and save flags. */
2426         spin_lock_irqsave(&lp->spinlock, flags);
2427
2428         psa_read(dev,
2429                  (char *) &psa.psa_quality_thr - (char *) &psa,
2430                  (unsigned char *) &psa.psa_quality_thr, 1);
2431         *(extra) = psa.psa_quality_thr & 0x0F;
2432
2433         /* Enable interrupts and restore flags. */
2434         spin_unlock_irqrestore(&lp->spinlock, flags);
2435
2436         return 0;
2437 }
2438
2439 #ifdef WAVELAN_ROAMING
2440 /*------------------------------------------------------------------*/
2441 /*
2442  * Wireless Private Handler : set roaming
2443  */
2444 static int wavelan_set_roam(struct net_device *dev,
2445                             struct iw_request_info *info,
2446                             union iwreq_data *wrqu,
2447                             char *extra)
2448 {
2449         net_local *lp = netdev_priv(dev);
2450         unsigned long flags;
2451
2452         /* Disable interrupts and save flags. */
2453         spin_lock_irqsave(&lp->spinlock, flags);
2454
2455         /* Note : should check if user == root */
2456         if(do_roaming && (*extra)==0)
2457                 wv_roam_cleanup(dev);
2458         else if(do_roaming==0 && (*extra)!=0)
2459                 wv_roam_init(dev);
2460
2461         do_roaming = (*extra);
2462
2463         /* Enable interrupts and restore flags. */
2464         spin_unlock_irqrestore(&lp->spinlock, flags);
2465
2466         return 0;
2467 }
2468
2469 /*------------------------------------------------------------------*/
2470 /*
2471  * Wireless Private Handler : get quality threshold
2472  */
2473 static int wavelan_get_roam(struct net_device *dev,
2474                             struct iw_request_info *info,
2475                             union iwreq_data *wrqu,
2476                             char *extra)
2477 {
2478         *(extra) = do_roaming;
2479
2480         return 0;
2481 }
2482 #endif  /* WAVELAN_ROAMING */
2483
2484 #ifdef HISTOGRAM
2485 /*------------------------------------------------------------------*/
2486 /*
2487  * Wireless Private Handler : set histogram
2488  */
2489 static int wavelan_set_histo(struct net_device *dev,
2490                              struct iw_request_info *info,
2491                              union iwreq_data *wrqu,
2492                              char *extra)
2493 {
2494         net_local *lp = netdev_priv(dev);
2495
2496         /* Check the number of intervals. */
2497         if (wrqu->data.length > 16) {
2498                 return(-E2BIG);
2499         }
2500
2501         /* Disable histo while we copy the addresses.
2502          * As we don't disable interrupts, we need to do this */
2503         lp->his_number = 0;
2504
2505         /* Are there ranges to copy? */
2506         if (wrqu->data.length > 0) {
2507                 /* Copy interval ranges to the driver */
2508                 memcpy(lp->his_range, extra, wrqu->data.length);
2509
2510                 {
2511                   int i;
2512                   printk(KERN_DEBUG "Histo :");
2513                   for(i = 0; i < wrqu->data.length; i++)
2514                     printk(" %d", lp->his_range[i]);
2515                   printk("\n");
2516                 }
2517
2518                 /* Reset result structure. */
2519                 memset(lp->his_sum, 0x00, sizeof(long) * 16);
2520         }
2521
2522         /* Now we can set the number of ranges */
2523         lp->his_number = wrqu->data.length;
2524
2525         return(0);
2526 }
2527
2528 /*------------------------------------------------------------------*/
2529 /*
2530  * Wireless Private Handler : get histogram
2531  */
2532 static int wavelan_get_histo(struct net_device *dev,
2533                              struct iw_request_info *info,
2534                              union iwreq_data *wrqu,
2535                              char *extra)
2536 {
2537         net_local *lp = netdev_priv(dev);
2538
2539         /* Set the number of intervals. */
2540         wrqu->data.length = lp->his_number;
2541
2542         /* Give back the distribution statistics */
2543         if(lp->his_number > 0)
2544                 memcpy(extra, lp->his_sum, sizeof(long) * lp->his_number);
2545
2546         return(0);
2547 }
2548 #endif                  /* HISTOGRAM */
2549
2550 /*------------------------------------------------------------------*/
2551 /*
2552  * Structures to export the Wireless Handlers
2553  */
2554
2555 static const struct iw_priv_args wavelan_private_args[] = {
2556 /*{ cmd,         set_args,                            get_args, name } */
2557   { SIOCSIPQTHR, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, 0, "setqualthr" },
2558   { SIOCGIPQTHR, 0, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, "getqualthr" },
2559   { SIOCSIPROAM, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, 0, "setroam" },
2560   { SIOCGIPROAM, 0, IW_PRIV_TYPE_BYTE | IW_PRIV_SIZE_FIXED | 1, "getroam" },
2561   { SIOCSIPHISTO, IW_PRIV_TYPE_BYTE | 16,                    0, "sethisto" },
2562   { SIOCGIPHISTO, 0,                     IW_PRIV_TYPE_INT | 16, "gethisto" },
2563 };
2564
2565 static const iw_handler         wavelan_handler[] =
2566 {
2567         NULL,                           /* SIOCSIWNAME */
2568         wavelan_get_name,               /* SIOCGIWNAME */
2569         wavelan_set_nwid,               /* SIOCSIWNWID */
2570         wavelan_get_nwid,               /* SIOCGIWNWID */
2571         wavelan_set_freq,               /* SIOCSIWFREQ */
2572         wavelan_get_freq,               /* SIOCGIWFREQ */
2573 #ifdef WAVELAN_ROAMING
2574         wavelan_set_mode,               /* SIOCSIWMODE */
2575         wavelan_get_mode,               /* SIOCGIWMODE */
2576 #else   /* WAVELAN_ROAMING */
2577         NULL,                           /* SIOCSIWMODE */
2578         NULL,                           /* SIOCGIWMODE */
2579 #endif  /* WAVELAN_ROAMING */
2580         wavelan_set_sens,               /* SIOCSIWSENS */
2581         wavelan_get_sens,               /* SIOCGIWSENS */
2582         NULL,                           /* SIOCSIWRANGE */
2583         wavelan_get_range,              /* SIOCGIWRANGE */
2584         NULL,                           /* SIOCSIWPRIV */
2585         NULL,                           /* SIOCGIWPRIV */
2586         NULL,                           /* SIOCSIWSTATS */
2587         NULL,                           /* SIOCGIWSTATS */
2588         iw_handler_set_spy,             /* SIOCSIWSPY */
2589         iw_handler_get_spy,             /* SIOCGIWSPY */
2590         iw_handler_set_thrspy,          /* SIOCSIWTHRSPY */
2591         iw_handler_get_thrspy,          /* SIOCGIWTHRSPY */
2592 #ifdef WAVELAN_ROAMING_EXT
2593         wavelan_set_wap,                /* SIOCSIWAP */
2594         wavelan_get_wap,                /* SIOCGIWAP */
2595         NULL,                           /* -- hole -- */
2596         NULL,                           /* SIOCGIWAPLIST */
2597         NULL,                           /* -- hole -- */
2598         NULL,                           /* -- hole -- */
2599         wavelan_set_essid,              /* SIOCSIWESSID */
2600         wavelan_get_essid,              /* SIOCGIWESSID */
2601 #else   /* WAVELAN_ROAMING_EXT */
2602         NULL,                           /* SIOCSIWAP */
2603         NULL,                           /* SIOCGIWAP */
2604         NULL,                           /* -- hole -- */
2605         NULL,                           /* SIOCGIWAPLIST */
2606         NULL,                           /* -- hole -- */
2607         NULL,                           /* -- hole -- */
2608         NULL,                           /* SIOCSIWESSID */
2609         NULL,                           /* SIOCGIWESSID */
2610 #endif  /* WAVELAN_ROAMING_EXT */
2611         NULL,                           /* SIOCSIWNICKN */
2612         NULL,                           /* SIOCGIWNICKN */
2613         NULL,                           /* -- hole -- */
2614         NULL,                           /* -- hole -- */
2615         NULL,                           /* SIOCSIWRATE */
2616         NULL,                           /* SIOCGIWRATE */
2617         NULL,                           /* SIOCSIWRTS */
2618         NULL,                           /* SIOCGIWRTS */
2619         NULL,                           /* SIOCSIWFRAG */
2620         NULL,                           /* SIOCGIWFRAG */
2621         NULL,                           /* SIOCSIWTXPOW */
2622         NULL,                           /* SIOCGIWTXPOW */
2623         NULL,                           /* SIOCSIWRETRY */
2624         NULL,                           /* SIOCGIWRETRY */
2625         wavelan_set_encode,             /* SIOCSIWENCODE */
2626         wavelan_get_encode,             /* SIOCGIWENCODE */
2627 };
2628
2629 static const iw_handler         wavelan_private_handler[] =
2630 {
2631         wavelan_set_qthr,               /* SIOCIWFIRSTPRIV */
2632         wavelan_get_qthr,               /* SIOCIWFIRSTPRIV + 1 */
2633 #ifdef WAVELAN_ROAMING
2634         wavelan_set_roam,               /* SIOCIWFIRSTPRIV + 2 */
2635         wavelan_get_roam,               /* SIOCIWFIRSTPRIV + 3 */
2636 #else   /* WAVELAN_ROAMING */
2637         NULL,                           /* SIOCIWFIRSTPRIV + 2 */
2638         NULL,                           /* SIOCIWFIRSTPRIV + 3 */
2639 #endif  /* WAVELAN_ROAMING */
2640 #ifdef HISTOGRAM
2641         wavelan_set_histo,              /* SIOCIWFIRSTPRIV + 4 */
2642         wavelan_get_histo,              /* SIOCIWFIRSTPRIV + 5 */
2643 #endif  /* HISTOGRAM */
2644 };
2645
2646 static const struct iw_handler_def      wavelan_handler_def =
2647 {
2648         .num_standard   = ARRAY_SIZE(wavelan_handler),
2649         .num_private    = ARRAY_SIZE(wavelan_private_handler),
2650         .num_private_args = ARRAY_SIZE(wavelan_private_args),
2651         .standard       = wavelan_handler,
2652         .private        = wavelan_private_handler,
2653         .private_args   = wavelan_private_args,
2654         .get_wireless_stats = wavelan_get_wireless_stats,
2655 };
2656
2657 /*------------------------------------------------------------------*/
2658 /*
2659  * Get wireless statistics
2660  * Called by /proc/net/wireless...
2661  */
2662 static iw_stats *
2663 wavelan_get_wireless_stats(struct net_device *  dev)
2664 {
2665   unsigned int          base = dev->base_addr;
2666   net_local *           lp = netdev_priv(dev);
2667   mmr_t                 m;
2668   iw_stats *            wstats;
2669   unsigned long         flags;
2670
2671 #ifdef DEBUG_IOCTL_TRACE
2672   printk(KERN_DEBUG "%s: ->wavelan_get_wireless_stats()\n", dev->name);
2673 #endif
2674
2675   /* Disable interrupts & save flags */
2676   spin_lock_irqsave(&lp->spinlock, flags);
2677
2678   wstats = &lp->wstats;
2679
2680   /* Get data from the mmc */
2681   mmc_out(base, mmwoff(0, mmw_freeze), 1);
2682
2683   mmc_read(base, mmroff(0, mmr_dce_status), &m.mmr_dce_status, 1);
2684   mmc_read(base, mmroff(0, mmr_wrong_nwid_l), &m.mmr_wrong_nwid_l, 2);
2685   mmc_read(base, mmroff(0, mmr_thr_pre_set), &m.mmr_thr_pre_set, 4);
2686
2687   mmc_out(base, mmwoff(0, mmw_freeze), 0);
2688
2689   /* Copy data to wireless stuff */
2690   wstats->status = m.mmr_dce_status & MMR_DCE_STATUS;
2691   wstats->qual.qual = m.mmr_sgnl_qual & MMR_SGNL_QUAL;
2692   wstats->qual.level = m.mmr_signal_lvl & MMR_SIGNAL_LVL;
2693   wstats->qual.noise = m.mmr_silence_lvl & MMR_SILENCE_LVL;
2694   wstats->qual.updated = (((m.mmr_signal_lvl & MMR_SIGNAL_LVL_VALID) >> 7) |
2695                           ((m.mmr_signal_lvl & MMR_SIGNAL_LVL_VALID) >> 6) |
2696                           ((m.mmr_silence_lvl & MMR_SILENCE_LVL_VALID) >> 5));
2697   wstats->discard.nwid += (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l;
2698   wstats->discard.code = 0L;
2699   wstats->discard.misc = 0L;
2700
2701   /* ReEnable interrupts & restore flags */
2702   spin_unlock_irqrestore(&lp->spinlock, flags);
2703
2704 #ifdef DEBUG_IOCTL_TRACE
2705   printk(KERN_DEBUG "%s: <-wavelan_get_wireless_stats()\n", dev->name);
2706 #endif
2707   return &lp->wstats;
2708 }
2709
2710 /************************* PACKET RECEPTION *************************/
2711 /*
2712  * This part deal with receiving the packets.
2713  * The interrupt handler get an interrupt when a packet has been
2714  * successfully received and called this part...
2715  */
2716
2717 /*------------------------------------------------------------------*/
2718 /*
2719  * Calculate the starting address of the frame pointed to by the receive
2720  * frame pointer and verify that the frame seem correct
2721  * (called by wv_packet_rcv())
2722  */
2723 static int
2724 wv_start_of_frame(struct net_device *   dev,
2725                   int           rfp,    /* end of frame */
2726                   int           wrap)   /* start of buffer */
2727 {
2728   unsigned int  base = dev->base_addr;
2729   int           rp;
2730   int           len;
2731
2732   rp = (rfp - 5 + RX_SIZE) % RX_SIZE;
2733   outb(rp & 0xff, PIORL(base));
2734   outb(((rp >> 8) & PIORH_MASK), PIORH(base));
2735   len = inb(PIOP(base));
2736   len |= inb(PIOP(base)) << 8;
2737
2738   /* Sanity checks on size */
2739   /* Frame too big */
2740   if(len > MAXDATAZ + 100)
2741     {
2742 #ifdef DEBUG_RX_ERROR
2743       printk(KERN_INFO "%s: wv_start_of_frame: Received frame too large, rfp %d len 0x%x\n",
2744              dev->name, rfp, len);
2745 #endif
2746       return(-1);
2747     }
2748
2749   /* Frame too short */
2750   if(len < 7)
2751     {
2752 #ifdef DEBUG_RX_ERROR
2753       printk(KERN_INFO "%s: wv_start_of_frame: Received null frame, rfp %d len 0x%x\n",
2754              dev->name, rfp, len);
2755 #endif
2756       return(-1);
2757     }
2758
2759   /* Wrap around buffer */
2760   if(len > ((wrap - (rfp - len) + RX_SIZE) % RX_SIZE))  /* magic formula ! */
2761     {
2762 #ifdef DEBUG_RX_ERROR
2763       printk(KERN_INFO "%s: wv_start_of_frame: wrap around buffer, wrap %d rfp %d len 0x%x\n",
2764              dev->name, wrap, rfp, len);
2765 #endif
2766       return(-1);
2767     }
2768
2769   return((rp - len + RX_SIZE) % RX_SIZE);
2770 } /* wv_start_of_frame */
2771
2772 /*------------------------------------------------------------------*/
2773 /*
2774  * This routine does the actual copy of data (including the ethernet
2775  * header structure) from the WaveLAN card to an sk_buff chain that
2776  * will be passed up to the network interface layer. NOTE: We
2777  * currently don't handle trailer protocols (neither does the rest of
2778  * the network interface), so if that is needed, it will (at least in
2779  * part) be added here.  The contents of the receive ring buffer are
2780  * copied to a message chain that is then passed to the kernel.
2781  *
2782  * Note: if any errors occur, the packet is "dropped on the floor"
2783  * (called by wv_packet_rcv())
2784  */
2785 static void
2786 wv_packet_read(struct net_device *              dev,
2787                int              fd_p,
2788                int              sksize)
2789 {
2790   net_local *           lp = netdev_priv(dev);
2791   struct sk_buff *      skb;
2792
2793 #ifdef DEBUG_RX_TRACE
2794   printk(KERN_DEBUG "%s: ->wv_packet_read(0x%X, %d)\n",
2795          dev->name, fd_p, sksize);
2796 #endif
2797
2798   /* Allocate some buffer for the new packet */
2799   if((skb = dev_alloc_skb(sksize+2)) == (struct sk_buff *) NULL)
2800     {
2801 #ifdef DEBUG_RX_ERROR
2802       printk(KERN_INFO "%s: wv_packet_read(): could not alloc_skb(%d, GFP_ATOMIC)\n",
2803              dev->name, sksize);
2804 #endif
2805       dev->stats.rx_dropped++;
2806       /*
2807        * Not only do we want to return here, but we also need to drop the
2808        * packet on the floor to clear the interrupt.
2809        */
2810       return;
2811     }
2812
2813   skb_reserve(skb, 2);
2814   fd_p = read_ringbuf(dev, fd_p, (char *) skb_put(skb, sksize), sksize);
2815   skb->protocol = eth_type_trans(skb, dev);
2816
2817 #ifdef DEBUG_RX_INFO
2818   wv_packet_info(skb_mac_header(skb), sksize, dev->name, "wv_packet_read");
2819 #endif  /* DEBUG_RX_INFO */
2820
2821   /* Statistics gathering & stuff associated.
2822    * It seem a bit messy with all the define, but it's really simple... */
2823   if(
2824 #ifdef IW_WIRELESS_SPY
2825      (lp->spy_data.spy_number > 0) ||
2826 #endif  /* IW_WIRELESS_SPY */
2827 #ifdef HISTOGRAM
2828      (lp->his_number > 0) ||
2829 #endif  /* HISTOGRAM */
2830 #ifdef WAVELAN_ROAMING
2831      (do_roaming) ||
2832 #endif  /* WAVELAN_ROAMING */
2833      0)
2834     {
2835       u_char    stats[3];       /* Signal level, Noise level, Signal quality */
2836
2837       /* read signal level, silence level and signal quality bytes */
2838       fd_p = read_ringbuf(dev, (fd_p + 4) % RX_SIZE + RX_BASE,
2839                           stats, 3);
2840 #ifdef DEBUG_RX_INFO
2841       printk(KERN_DEBUG "%s: wv_packet_read(): Signal level %d/63, Silence level %d/63, signal quality %d/16\n",
2842              dev->name, stats[0] & 0x3F, stats[1] & 0x3F, stats[2] & 0x0F);
2843 #endif
2844
2845 #ifdef WAVELAN_ROAMING
2846       if(do_roaming)
2847         if(WAVELAN_BEACON(skb->data))
2848           wl_roam_gather(dev, skb->data, stats);
2849 #endif  /* WAVELAN_ROAMING */
2850
2851 #ifdef WIRELESS_SPY
2852       wl_spy_gather(dev, skb_mac_header(skb) + WAVELAN_ADDR_SIZE, stats);
2853 #endif  /* WIRELESS_SPY */
2854 #ifdef HISTOGRAM
2855       wl_his_gather(dev, stats);
2856 #endif  /* HISTOGRAM */
2857     }
2858
2859   /*
2860    * Hand the packet to the Network Module
2861    */
2862   netif_rx(skb);
2863
2864   /* Keep stats up to date */
2865   dev->stats.rx_packets++;
2866   dev->stats.rx_bytes += sksize;
2867
2868 #ifdef DEBUG_RX_TRACE
2869   printk(KERN_DEBUG "%s: <-wv_packet_read()\n", dev->name);
2870 #endif
2871   return;
2872 }
2873
2874 /*------------------------------------------------------------------*/
2875 /*
2876  * This routine is called by the interrupt handler to initiate a
2877  * packet transfer from the card to the network interface layer above
2878  * this driver.  This routine checks if a buffer has been successfully
2879  * received by the WaveLAN card.  If so, the routine wv_packet_read is
2880  * called to do the actual transfer of the card's data including the
2881  * ethernet header into a packet consisting of an sk_buff chain.
2882  * (called by wavelan_interrupt())
2883  * Note : the spinlock is already grabbed for us and irq are disabled.
2884  */
2885 static void
2886 wv_packet_rcv(struct net_device *       dev)
2887 {
2888   unsigned int  base = dev->base_addr;
2889   net_local *   lp = netdev_priv(dev);
2890   int           newrfp;
2891   int           rp;
2892   int           len;
2893   int           f_start;
2894   int           status;
2895   int           i593_rfp;
2896   int           stat_ptr;
2897   u_char        c[4];
2898
2899 #ifdef DEBUG_RX_TRACE
2900   printk(KERN_DEBUG "%s: ->wv_packet_rcv()\n", dev->name);
2901 #endif
2902
2903   /* Get the new receive frame pointer from the i82593 chip */
2904   outb(CR0_STATUS_2 | OP0_NOP, LCCR(base));
2905   i593_rfp = inb(LCSR(base));
2906   i593_rfp |= inb(LCSR(base)) << 8;
2907   i593_rfp %= RX_SIZE;
2908
2909   /* Get the new receive frame pointer from the WaveLAN card.
2910    * It is 3 bytes more than the increment of the i82593 receive
2911    * frame pointer, for each packet. This is because it includes the
2912    * 3 roaming bytes added by the mmc.
2913    */
2914   newrfp = inb(RPLL(base));
2915   newrfp |= inb(RPLH(base)) << 8;
2916   newrfp %= RX_SIZE;
2917
2918 #ifdef DEBUG_RX_INFO
2919   printk(KERN_DEBUG "%s: wv_packet_rcv(): i593_rfp %d stop %d newrfp %d lp->rfp %d\n",
2920          dev->name, i593_rfp, lp->stop, newrfp, lp->rfp);
2921 #endif
2922
2923 #ifdef DEBUG_RX_ERROR
2924   /* If no new frame pointer... */
2925   if(lp->overrunning || newrfp == lp->rfp)
2926     printk(KERN_INFO "%s: wv_packet_rcv(): no new frame: i593_rfp %d stop %d newrfp %d lp->rfp %d\n",
2927            dev->name, i593_rfp, lp->stop, newrfp, lp->rfp);
2928 #endif
2929
2930   /* Read all frames (packets) received */
2931   while(newrfp != lp->rfp)
2932     {
2933       /* A frame is composed of the packet, followed by a status word,
2934        * the length of the frame (word) and the mmc info (SNR & qual).
2935        * It's because the length is at the end that we can only scan
2936        * frames backward. */
2937
2938       /* Find the first frame by skipping backwards over the frames */
2939       rp = newrfp;      /* End of last frame */
2940       while(((f_start = wv_start_of_frame(dev, rp, newrfp)) != lp->rfp) &&
2941             (f_start != -1))
2942           rp = f_start;
2943
2944       /* If we had a problem */
2945       if(f_start == -1)
2946         {
2947 #ifdef DEBUG_RX_ERROR
2948           printk(KERN_INFO "wavelan_cs: cannot find start of frame ");
2949           printk(" i593_rfp %d stop %d newrfp %d lp->rfp %d\n",
2950                  i593_rfp, lp->stop, newrfp, lp->rfp);
2951 #endif
2952           lp->rfp = rp;         /* Get to the last usable frame */
2953           continue;
2954         }
2955
2956       /* f_start point to the beggining of the first frame received
2957        * and rp to the beggining of the next one */
2958
2959       /* Read status & length of the frame */
2960       stat_ptr = (rp - 7 + RX_SIZE) % RX_SIZE;
2961       stat_ptr = read_ringbuf(dev, stat_ptr, c, 4);
2962       status = c[0] | (c[1] << 8);
2963       len = c[2] | (c[3] << 8);
2964
2965       /* Check status */
2966       if((status & RX_RCV_OK) != RX_RCV_OK)
2967         {
2968           dev->stats.rx_errors++;
2969           if(status & RX_NO_SFD)
2970             dev->stats.rx_frame_errors++;
2971           if(status & RX_CRC_ERR)
2972             dev->stats.rx_crc_errors++;
2973           if(status & RX_OVRRUN)
2974             dev->stats.rx_over_errors++;
2975
2976 #ifdef DEBUG_RX_FAIL
2977           printk(KERN_DEBUG "%s: wv_packet_rcv(): packet not received ok, status = 0x%x\n",
2978                  dev->name, status);
2979 #endif
2980         }
2981       else
2982         /* Read the packet and transmit to Linux */
2983         wv_packet_read(dev, f_start, len - 2);
2984
2985       /* One frame has been processed, skip it */
2986       lp->rfp = rp;
2987     }
2988
2989   /*
2990    * Update the frame stop register, but set it to less than
2991    * the full 8K to allow space for 3 bytes of signal strength
2992    * per packet.
2993    */
2994   lp->stop = (i593_rfp + RX_SIZE - ((RX_SIZE / 64) * 3)) % RX_SIZE;
2995   outb(OP0_SWIT_TO_PORT_1 | CR0_CHNL, LCCR(base));
2996   outb(CR1_STOP_REG_UPDATE | (lp->stop >> RX_SIZE_SHIFT), LCCR(base));
2997   outb(OP1_SWIT_TO_PORT_0, LCCR(base));
2998
2999 #ifdef DEBUG_RX_TRACE
3000   printk(KERN_DEBUG "%s: <-wv_packet_rcv()\n", dev->name);
3001 #endif
3002 }
3003
3004 /*********************** PACKET TRANSMISSION ***********************/
3005 /*
3006  * This part deal with sending packet through the wavelan
3007  * We copy the packet to the send buffer and then issue the send
3008  * command to the i82593. The result of this operation will be
3009  * checked in wavelan_interrupt()
3010  */
3011
3012 /*------------------------------------------------------------------*/
3013 /*
3014  * This routine fills in the appropriate registers and memory
3015  * locations on the WaveLAN card and starts the card off on
3016  * the transmit.
3017  * (called in wavelan_packet_xmit())
3018  */
3019 static void
3020 wv_packet_write(struct net_device *     dev,
3021                 void *          buf,
3022                 short           length)
3023 {
3024   net_local *           lp = netdev_priv(dev);
3025   unsigned int          base = dev->base_addr;
3026   unsigned long         flags;
3027   int                   clen = length;
3028   register u_short      xmtdata_base = TX_BASE;
3029
3030 #ifdef DEBUG_TX_TRACE
3031   printk(KERN_DEBUG "%s: ->wv_packet_write(%d)\n", dev->name, length);
3032 #endif
3033
3034   spin_lock_irqsave(&lp->spinlock, flags);
3035
3036   /* Write the length of data buffer followed by the buffer */
3037   outb(xmtdata_base & 0xff, PIORL(base));
3038   outb(((xmtdata_base >> 8) & PIORH_MASK) | PIORH_SEL_TX, PIORH(base));
3039   outb(clen & 0xff, PIOP(base));        /* lsb */
3040   outb(clen >> 8, PIOP(base));          /* msb */
3041
3042   /* Send the data */
3043   outsb(PIOP(base), buf, clen);
3044
3045   /* Indicate end of transmit chain */
3046   outb(OP0_NOP, PIOP(base));
3047   /* josullvn@cs.cmu.edu: need to send a second NOP for alignment... */
3048   outb(OP0_NOP, PIOP(base));
3049
3050   /* Reset the transmit DMA pointer */
3051   hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET);
3052   hacr_write(base, HACR_DEFAULT);
3053   /* Send the transmit command */
3054   wv_82593_cmd(dev, "wv_packet_write(): transmit",
3055                OP0_TRANSMIT, SR0_NO_RESULT);
3056
3057   /* Make sure the watchdog will keep quiet for a while */
3058   dev->trans_start = jiffies;
3059
3060   /* Keep stats up to date */
3061   dev->stats.tx_bytes += length;
3062
3063   spin_unlock_irqrestore(&lp->spinlock, flags);
3064
3065 #ifdef DEBUG_TX_INFO
3066   wv_packet_info((u_char *) buf, length, dev->name, "wv_packet_write");
3067 #endif  /* DEBUG_TX_INFO */
3068
3069 #ifdef DEBUG_TX_TRACE
3070   printk(KERN_DEBUG "%s: <-wv_packet_write()\n", dev->name);
3071 #endif
3072 }
3073
3074 /*------------------------------------------------------------------*/
3075 /*
3076  * This routine is called when we want to send a packet (NET3 callback)
3077  * In this routine, we check if the harware is ready to accept
3078  * the packet. We also prevent reentrance. Then, we call the function
3079  * to send the packet...
3080  */
3081 static netdev_tx_t
3082 wavelan_packet_xmit(struct sk_buff *    skb,
3083                     struct net_device *         dev)
3084 {
3085   net_local *           lp = netdev_priv(dev);
3086   unsigned long         flags;
3087
3088 #ifdef DEBUG_TX_TRACE
3089   printk(KERN_DEBUG "%s: ->wavelan_packet_xmit(0x%X)\n", dev->name,
3090          (unsigned) skb);
3091 #endif
3092
3093   /*
3094    * Block a timer-based transmit from overlapping a previous transmit.
3095    * In other words, prevent reentering this routine.
3096    */
3097   netif_stop_queue(dev);
3098
3099   /* If somebody has asked to reconfigure the controller,
3100    * we can do it now */
3101   if(lp->reconfig_82593)
3102     {
3103       spin_lock_irqsave(&lp->spinlock, flags);  /* Disable interrupts */
3104       wv_82593_config(dev);
3105       spin_unlock_irqrestore(&lp->spinlock, flags);     /* Re-enable interrupts */
3106       /* Note : the configure procedure was totally synchronous,
3107        * so the Tx buffer is now free */
3108     }
3109
3110         /* Check if we need some padding */
3111         /* Note : on wireless the propagation time is in the order of 1us,
3112          * and we don't have the Ethernet specific requirement of beeing
3113          * able to detect collisions, therefore in theory we don't really
3114          * need to pad. Jean II */
3115         if (skb_padto(skb, ETH_ZLEN))
3116                 return NETDEV_TX_OK;
3117
3118   wv_packet_write(dev, skb->data, skb->len);
3119
3120   dev_kfree_skb(skb);
3121
3122 #ifdef DEBUG_TX_TRACE
3123   printk(KERN_DEBUG "%s: <-wavelan_packet_xmit()\n", dev->name);
3124 #endif
3125   return NETDEV_TX_OK;
3126 }
3127
3128 /********************** HARDWARE CONFIGURATION **********************/
3129 /*
3130  * This part do the real job of starting and configuring the hardware.
3131  */
3132
3133 /*------------------------------------------------------------------*/
3134 /*
3135  * Routine to initialize the Modem Management Controller.
3136  * (called by wv_hw_config())
3137  */
3138 static int
3139 wv_mmc_init(struct net_device * dev)
3140 {
3141   unsigned int  base = dev->base_addr;
3142   psa_t         psa;
3143   mmw_t         m;
3144   int           configured;
3145   int           i;              /* Loop counter */
3146
3147 #ifdef DEBUG_CONFIG_TRACE
3148   printk(KERN_DEBUG "%s: ->wv_mmc_init()\n", dev->name);
3149 #endif
3150
3151   /* Read the parameter storage area */
3152   psa_read(dev, 0, (unsigned char *) &psa, sizeof(psa));
3153
3154   /*
3155    * Check the first three octets of the MAC addr for the manufacturer's code.
3156    * Note: If you get the error message below, you've got a
3157    * non-NCR/AT&T/Lucent PCMCIA cards, see wavelan_cs.h for detail on
3158    * how to configure your card...
3159    */
3160   for (i = 0; i < ARRAY_SIZE(MAC_ADDRESSES); i++)
3161     if ((psa.psa_univ_mac_addr[0] == MAC_ADDRESSES[i][0]) &&
3162         (psa.psa_univ_mac_addr[1] == MAC_ADDRESSES[i][1]) &&
3163         (psa.psa_univ_mac_addr[2] == MAC_ADDRESSES[i][2]))
3164       break;
3165
3166   /* If we have not found it... */
3167   if (i == ARRAY_SIZE(MAC_ADDRESSES))
3168     {
3169 #ifdef DEBUG_CONFIG_ERRORS
3170       printk(KERN_WARNING "%s: wv_mmc_init(): Invalid MAC address: %02X:%02X:%02X:...\n",
3171              dev->name, psa.psa_univ_mac_addr[0],
3172              psa.psa_univ_mac_addr[1], psa.psa_univ_mac_addr[2]);
3173 #endif
3174       return FALSE;
3175     }
3176
3177   /* Get the MAC address */
3178   memcpy(&dev->dev_addr[0], &psa.psa_univ_mac_addr[0], WAVELAN_ADDR_SIZE);
3179
3180 #ifdef USE_PSA_CONFIG
3181   configured = psa.psa_conf_status & 1;
3182 #else
3183   configured = 0;
3184 #endif
3185
3186   /* Is the PSA is not configured */
3187   if(!configured)
3188     {
3189       /* User will be able to configure NWID after (with iwconfig) */
3190       psa.psa_nwid[0] = 0;
3191       psa.psa_nwid[1] = 0;
3192
3193       /* As NWID is not set : no NWID checking */
3194       psa.psa_nwid_select = 0;
3195
3196       /* Disable encryption */
3197       psa.psa_encryption_select = 0;
3198
3199       /* Set to standard values
3200        * 0x04 for AT,
3201        * 0x01 for MCA,
3202        * 0x04 for PCMCIA and 2.00 card (AT&T 407-024689/E document)
3203        */
3204       if (psa.psa_comp_number & 1)
3205         psa.psa_thr_pre_set = 0x01;
3206       else
3207         psa.psa_thr_pre_set = 0x04;
3208       psa.psa_quality_thr = 0x03;
3209
3210       /* It is configured */
3211       psa.psa_conf_status |= 1;
3212
3213 #ifdef USE_PSA_CONFIG
3214       /* Write the psa */
3215       psa_write(dev, (char *)psa.psa_nwid - (char *)&psa,
3216                 (unsigned char *)psa.psa_nwid, 4);
3217       psa_write(dev, (char *)&psa.psa_thr_pre_set - (char *)&psa,
3218                 (unsigned char *)&psa.psa_thr_pre_set, 1);
3219       psa_write(dev, (char *)&psa.psa_quality_thr - (char *)&psa,
3220                 (unsigned char *)&psa.psa_quality_thr, 1);
3221       psa_write(dev, (char *)&psa.psa_conf_status - (char *)&psa,
3222                 (unsigned char *)&psa.psa_conf_status, 1);
3223       /* update the Wavelan checksum */
3224       update_psa_checksum(dev);
3225 #endif  /* USE_PSA_CONFIG */
3226     }
3227
3228   /* Zero the mmc structure */
3229   memset(&m, 0x00, sizeof(m));
3230
3231   /* Copy PSA info to the mmc */
3232   m.mmw_netw_id_l = psa.psa_nwid[1];
3233   m.mmw_netw_id_h = psa.psa_nwid[0];
3234
3235   if(psa.psa_nwid_select & 1)
3236     m.mmw_loopt_sel = 0x00;
3237   else
3238     m.mmw_loopt_sel = MMW_LOOPT_SEL_DIS_NWID;
3239
3240   memcpy(&m.mmw_encr_key, &psa.psa_encryption_key,
3241          sizeof(m.mmw_encr_key));
3242
3243   if(psa.psa_encryption_select)
3244     m.mmw_encr_enable = MMW_ENCR_ENABLE_EN | MMW_ENCR_ENABLE_MODE;
3245   else
3246     m.mmw_encr_enable = 0;
3247
3248   m.mmw_thr_pre_set = psa.psa_thr_pre_set & 0x3F;
3249   m.mmw_quality_thr = psa.psa_quality_thr & 0x0F;
3250
3251   /*
3252    * Set default modem control parameters.
3253    * See NCR document 407-0024326 Rev. A.
3254    */
3255   m.mmw_jabber_enable = 0x01;
3256   m.mmw_anten_sel = MMW_ANTEN_SEL_ALG_EN;
3257   m.mmw_ifs = 0x20;
3258   m.mmw_mod_delay = 0x04;
3259   m.mmw_jam_time = 0x38;
3260
3261   m.mmw_des_io_invert = 0;
3262   m.mmw_freeze = 0;
3263   m.mmw_decay_prm = 0;
3264   m.mmw_decay_updat_prm = 0;
3265
3266   /* Write all info to mmc */
3267   mmc_write(base, 0, (u_char *)&m, sizeof(m));
3268
3269   /* The following code start the modem of the 2.00 frequency
3270    * selectable cards at power on. It's not strictly needed for the
3271    * following boots...
3272    * The original patch was by Joe Finney for the PCMCIA driver, but
3273    * I've cleaned it a bit and add documentation.
3274    * Thanks to Loeke Brederveld from Lucent for the info.
3275    */
3276
3277   /* Attempt to recognise 2.00 cards (2.4 GHz frequency selectable)
3278    * (does it work for everybody ? - especially old cards...) */
3279   /* Note : WFREQSEL verify that it is able to read from EEprom
3280    * a sensible frequency (address 0x00) + that MMR_FEE_STATUS_ID
3281    * is 0xA (Xilinx version) or 0xB (Ariadne version).
3282    * My test is more crude but do work... */
3283   if(!(mmc_in(base, mmroff(0, mmr_fee_status)) &
3284        (MMR_FEE_STATUS_DWLD | MMR_FEE_STATUS_BUSY)))
3285     {
3286       /* We must download the frequency parameters to the
3287        * synthetisers (from the EEprom - area 1)
3288        * Note : as the EEprom is auto decremented, we set the end
3289        * if the area... */
3290       m.mmw_fee_addr = 0x0F;
3291       m.mmw_fee_ctrl = MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD;
3292       mmc_write(base, (char *)&m.mmw_fee_ctrl - (char *)&m,
3293                 (unsigned char *)&m.mmw_fee_ctrl, 2);
3294
3295       /* Wait until the download is finished */
3296       fee_wait(base, 100, 100);
3297
3298 #ifdef DEBUG_CONFIG_INFO
3299       /* The frequency was in the last word downloaded... */
3300       mmc_read(base, (char *)&m.mmw_fee_data_l - (char *)&m,
3301                (unsigned char *)&m.mmw_fee_data_l, 2);
3302
3303       /* Print some info for the user */
3304       printk(KERN_DEBUG "%s: Wavelan 2.00 recognised (frequency select) : Current frequency = %ld\n",
3305              dev->name,
3306              ((m.mmw_fee_data_h << 4) |
3307               (m.mmw_fee_data_l >> 4)) * 5 / 2 + 24000L);
3308 #endif
3309
3310       /* We must now download the power adjust value (gain) to
3311        * the synthetisers (from the EEprom - area 7 - DAC) */
3312       m.mmw_fee_addr = 0x61;
3313       m.mmw_fee_ctrl = MMW_FEE_CTRL_READ | MMW_FEE_CTRL_DWLD;
3314       mmc_write(base, (char *)&m.mmw_fee_ctrl - (char *)&m,
3315                 (unsigned char *)&m.mmw_fee_ctrl, 2);
3316
3317       /* Wait until the download is finished */
3318     }   /* if 2.00 card */
3319
3320 #ifdef DEBUG_CONFIG_TRACE
3321   printk(KERN_DEBUG "%s: <-wv_mmc_init()\n", dev->name);
3322 #endif
3323   return TRUE;
3324 }
3325
3326 /*------------------------------------------------------------------*/
3327 /*
3328  * Routine to gracefully turn off reception, and wait for any commands
3329  * to complete.
3330  * (called in wv_ru_start() and wavelan_close() and wavelan_event())
3331  */
3332 static int
3333 wv_ru_stop(struct net_device *  dev)
3334 {
3335   unsigned int  base = dev->base_addr;
3336   net_local *   lp = netdev_priv(dev);
3337   unsigned long flags;
3338   int           status;
3339   int           spin;
3340
3341 #ifdef DEBUG_CONFIG_TRACE
3342   printk(KERN_DEBUG "%s: ->wv_ru_stop()\n", dev->name);
3343 #endif
3344
3345   spin_lock_irqsave(&lp->spinlock, flags);
3346
3347   /* First, send the LAN controller a stop receive command */
3348   wv_82593_cmd(dev, "wv_graceful_shutdown(): stop-rcv",
3349                OP0_STOP_RCV, SR0_NO_RESULT);
3350
3351   /* Then, spin until the receive unit goes idle */
3352   spin = 300;
3353   do
3354     {
3355       udelay(10);
3356       outb(OP0_NOP | CR0_STATUS_3, LCCR(base));
3357       status = inb(LCSR(base));
3358     }
3359   while(((status & SR3_RCV_STATE_MASK) != SR3_RCV_IDLE) && (spin-- > 0));
3360
3361   /* Now, spin until the chip finishes executing its current command */
3362   do
3363     {
3364       udelay(10);
3365       outb(OP0_NOP | CR0_STATUS_3, LCCR(base));
3366       status = inb(LCSR(base));
3367     }
3368   while(((status & SR3_EXEC_STATE_MASK) != SR3_EXEC_IDLE) && (spin-- > 0));
3369
3370   spin_unlock_irqrestore(&lp->spinlock, flags);
3371
3372   /* If there was a problem */
3373   if(spin <= 0)
3374     {
3375 #ifdef DEBUG_CONFIG_ERRORS
3376       printk(KERN_INFO "%s: wv_ru_stop(): The chip doesn't want to stop...\n",
3377              dev->name);
3378 #endif
3379       return FALSE;
3380     }
3381
3382 #ifdef DEBUG_CONFIG_TRACE
3383   printk(KERN_DEBUG "%s: <-wv_ru_stop()\n", dev->name);
3384 #endif
3385   return TRUE;
3386 } /* wv_ru_stop */
3387
3388 /*------------------------------------------------------------------*/
3389 /*
3390  * This routine starts the receive unit running.  First, it checks if
3391  * the card is actually ready. Then the card is instructed to receive
3392  * packets again.
3393  * (called in wv_hw_reset() & wavelan_open())
3394  */
3395 static int
3396 wv_ru_start(struct net_device * dev)
3397 {
3398   unsigned int  base = dev->base_addr;
3399   net_local *   lp = netdev_priv(dev);
3400   unsigned long flags;
3401
3402 #ifdef DEBUG_CONFIG_TRACE
3403   printk(KERN_DEBUG "%s: ->wv_ru_start()\n", dev->name);
3404 #endif
3405
3406   /*
3407    * We need to start from a quiescent state. To do so, we could check
3408    * if the card is already running, but instead we just try to shut
3409    * it down. First, we disable reception (in case it was already enabled).
3410    */
3411   if(!wv_ru_stop(dev))
3412     return FALSE;
3413
3414   spin_lock_irqsave(&lp->spinlock, flags);
3415
3416   /* Now we know that no command is being executed. */
3417
3418   /* Set the receive frame pointer and stop pointer */
3419   lp->rfp = 0;
3420   outb(OP0_SWIT_TO_PORT_1 | CR0_CHNL, LCCR(base));
3421
3422   /* Reset ring management.  This sets the receive frame pointer to 1 */
3423   outb(OP1_RESET_RING_MNGMT, LCCR(base));
3424
3425 #if 0
3426   /* XXX the i82593 manual page 6-4 seems to indicate that the stop register
3427      should be set as below */
3428   /* outb(CR1_STOP_REG_UPDATE|((RX_SIZE - 0x40)>> RX_SIZE_SHIFT),LCCR(base));*/
3429 #elif 0
3430   /* but I set it 0 instead */
3431   lp->stop = 0;
3432 #else
3433   /* but I set it to 3 bytes per packet less than 8K */
3434   lp->stop = (0 + RX_SIZE - ((RX_SIZE / 64) * 3)) % RX_SIZE;
3435 #endif
3436   outb(CR1_STOP_REG_UPDATE | (lp->stop >> RX_SIZE_SHIFT), LCCR(base));
3437   outb(OP1_INT_ENABLE, LCCR(base));
3438   outb(OP1_SWIT_TO_PORT_0, LCCR(base));
3439
3440   /* Reset receive DMA pointer */
3441   hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET);
3442   hacr_write_slow(base, HACR_DEFAULT);
3443
3444   /* Receive DMA on channel 1 */
3445   wv_82593_cmd(dev, "wv_ru_start(): rcv-enable",
3446                CR0_CHNL | OP0_RCV_ENABLE, SR0_NO_RESULT);
3447
3448 #ifdef DEBUG_I82593_SHOW
3449   {
3450     int status;
3451     int opri;
3452     int spin = 10000;
3453
3454     /* spin until the chip starts receiving */
3455     do
3456       {
3457         outb(OP0_NOP | CR0_STATUS_3, LCCR(base));
3458         status = inb(LCSR(base));
3459         if(spin-- <= 0)
3460           break;
3461       }
3462     while(((status & SR3_RCV_STATE_MASK) != SR3_RCV_ACTIVE) &&
3463           ((status & SR3_RCV_STATE_MASK) != SR3_RCV_READY));
3464     printk(KERN_DEBUG "rcv status is 0x%x [i:%d]\n",
3465            (status & SR3_RCV_STATE_MASK), i);
3466   }
3467 #endif
3468
3469   spin_unlock_irqrestore(&lp->spinlock, flags);
3470
3471 #ifdef DEBUG_CONFIG_TRACE
3472   printk(KERN_DEBUG "%s: <-wv_ru_start()\n", dev->name);
3473 #endif
3474   return TRUE;
3475 }
3476
3477 /*------------------------------------------------------------------*/
3478 /*
3479  * This routine does a standard config of the WaveLAN controller (i82593).
3480  * In the ISA driver, this is integrated in wavelan_hardware_reset()
3481  * (called by wv_hw_config(), wv_82593_reconfig() & wavelan_packet_xmit())
3482  */
3483 static int
3484 wv_82593_config(struct net_device *     dev)
3485 {
3486   unsigned int                  base = dev->base_addr;
3487   net_local *                   lp = netdev_priv(dev);
3488   struct i82593_conf_block      cfblk;
3489   int                           ret = TRUE;
3490
3491 #ifdef DEBUG_CONFIG_TRACE
3492   printk(KERN_DEBUG "%s: ->wv_82593_config()\n", dev->name);
3493 #endif
3494
3495   /* Create & fill i82593 config block
3496    *
3497    * Now conform to Wavelan document WCIN085B
3498    */
3499   memset(&cfblk, 0x00, sizeof(struct i82593_conf_block));
3500   cfblk.d6mod = FALSE;          /* Run in i82593 advanced mode */
3501   cfblk.fifo_limit = 5;         /* = 56 B rx and 40 B tx fifo thresholds */
3502   cfblk.forgnesi = FALSE;       /* 0=82C501, 1=AMD7992B compatibility */
3503   cfblk.fifo_32 = 1;
3504   cfblk.throttle_enb = FALSE;
3505   cfblk.contin = TRUE;          /* enable continuous mode */
3506   cfblk.cntrxint = FALSE;       /* enable continuous mode receive interrupts */
3507   cfblk.addr_len = WAVELAN_ADDR_SIZE;
3508   cfblk.acloc = TRUE;           /* Disable source addr insertion by i82593 */
3509   cfblk.preamb_len = 0;         /* 2 bytes preamble (SFD) */
3510   cfblk.loopback = FALSE;
3511   cfblk.lin_prio = 0;           /* conform to 802.3 backoff algorithm */
3512   cfblk.exp_prio = 5;           /* conform to 802.3 backoff algorithm */
3513   cfblk.bof_met = 1;            /* conform to 802.3 backoff algorithm */
3514   cfblk.ifrm_spc = 0x20 >> 4;   /* 32 bit times interframe spacing */
3515   cfblk.slottim_low = 0x20 >> 5;        /* 32 bit times slot time */
3516   cfblk.slottim_hi = 0x0;
3517   cfblk.max_retr = 15;
3518   cfblk.prmisc = ((lp->promiscuous) ? TRUE: FALSE);     /* Promiscuous mode */
3519   cfblk.bc_dis = FALSE;         /* Enable broadcast reception */
3520   cfblk.crs_1 = TRUE;           /* Transmit without carrier sense */
3521   cfblk.nocrc_ins = FALSE;      /* i82593 generates CRC */
3522   cfblk.crc_1632 = FALSE;       /* 32-bit Autodin-II CRC */
3523   cfblk.crs_cdt = FALSE;        /* CD not to be interpreted as CS */
3524   cfblk.cs_filter = 0;          /* CS is recognized immediately */
3525   cfblk.crs_src = FALSE;        /* External carrier sense */
3526   cfblk.cd_filter = 0;          /* CD is recognized immediately */
3527   cfblk.min_fr_len = ETH_ZLEN >> 2;     /* Minimum frame length 64 bytes */
3528   cfblk.lng_typ = FALSE;        /* Length field > 1500 = type field */
3529   cfblk.lng_fld = TRUE;         /* Disable 802.3 length field check */
3530   cfblk.rxcrc_xf = TRUE;        /* Don't transfer CRC to memory */
3531   cfblk.artx = TRUE;            /* Disable automatic retransmission */
3532   cfblk.sarec = TRUE;           /* Disable source addr trig of CD */
3533   cfblk.tx_jabber = TRUE;       /* Disable jabber jam sequence */
3534   cfblk.hash_1 = FALSE;         /* Use bits 0-5 in mc address hash */
3535   cfblk.lbpkpol = TRUE;         /* Loopback pin active high */
3536   cfblk.fdx = FALSE;            /* Disable full duplex operation */
3537   cfblk.dummy_6 = 0x3f;         /* all ones */
3538   cfblk.mult_ia = FALSE;        /* No multiple individual addresses */
3539   cfblk.dis_bof = FALSE;        /* Disable the backoff algorithm ?! */
3540   cfblk.dummy_1 = TRUE;         /* set to 1 */
3541   cfblk.tx_ifs_retrig = 3;      /* Hmm... Disabled */
3542 #ifdef MULTICAST_ALL
3543   cfblk.mc_all = (lp->allmulticast ? TRUE: FALSE);      /* Allow all multicasts */
3544 #else
3545   cfblk.mc_all = FALSE;         /* No multicast all mode */
3546 #endif
3547   cfblk.rcv_mon = 0;            /* Monitor mode disabled */
3548   cfblk.frag_acpt = TRUE;       /* Do not accept fragments */
3549   cfblk.tstrttrs = FALSE;       /* No start transmission threshold */
3550   cfblk.fretx = TRUE;           /* FIFO automatic retransmission */
3551   cfblk.syncrqs = FALSE;        /* Synchronous DRQ deassertion... */
3552   cfblk.sttlen = TRUE;          /* 6 byte status registers */
3553   cfblk.rx_eop = TRUE;          /* Signal EOP on packet reception */
3554   cfblk.tx_eop = TRUE;          /* Signal EOP on packet transmission */
3555   cfblk.rbuf_size = RX_SIZE>>11;        /* Set receive buffer size */
3556   cfblk.rcvstop = TRUE;         /* Enable Receive Stop Register */
3557
3558 #ifdef DEBUG_I82593_SHOW
3559   print_hex_dump(KERN_DEBUG, "wavelan_cs: config block: ", DUMP_PREFIX_NONE,
3560                  16, 1, &cfblk, sizeof(struct i82593_conf_block), false);
3561 #endif
3562
3563   /* Copy the config block to the i82593 */
3564   outb(TX_BASE & 0xff, PIORL(base));
3565   outb(((TX_BASE >> 8) & PIORH_MASK) | PIORH_SEL_TX, PIORH(base));
3566   outb(sizeof(struct i82593_conf_block) & 0xff, PIOP(base));    /* lsb */
3567   outb(sizeof(struct i82593_conf_block) >> 8, PIOP(base));      /* msb */
3568   outsb(PIOP(base), (char *) &cfblk, sizeof(struct i82593_conf_block));
3569
3570   /* reset transmit DMA pointer */
3571   hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET);
3572   hacr_write(base, HACR_DEFAULT);
3573   if(!wv_82593_cmd(dev, "wv_82593_config(): configure",
3574                    OP0_CONFIGURE, SR0_CONFIGURE_DONE))
3575     ret = FALSE;
3576
3577   /* Initialize adapter's ethernet MAC address */
3578   outb(TX_BASE & 0xff, PIORL(base));
3579   outb(((TX_BASE >> 8) & PIORH_MASK) | PIORH_SEL_TX, PIORH(base));
3580   outb(WAVELAN_ADDR_SIZE, PIOP(base));  /* byte count lsb */
3581   outb(0, PIOP(base));                  /* byte count msb */
3582   outsb(PIOP(base), &dev->dev_addr[0], WAVELAN_ADDR_SIZE);
3583
3584   /* reset transmit DMA pointer */
3585   hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET);
3586   hacr_write(base, HACR_DEFAULT);
3587   if(!wv_82593_cmd(dev, "wv_82593_config(): ia-setup",
3588                    OP0_IA_SETUP, SR0_IA_SETUP_DONE))
3589     ret = FALSE;
3590
3591 #ifdef WAVELAN_ROAMING
3592     /* If roaming is enabled, join the "Beacon Request" multicast group... */
3593     /* But only if it's not in there already! */
3594   if(do_roaming)
3595     dev_mc_add(dev,WAVELAN_BEACON_ADDRESS, WAVELAN_ADDR_SIZE, 1);
3596 #endif  /* WAVELAN_ROAMING */
3597
3598   /* If any multicast address to set */
3599   if(lp->mc_count)
3600     {
3601       struct dev_mc_list *      dmi;
3602       int                       addrs_len = WAVELAN_ADDR_SIZE * lp->mc_count;
3603
3604 #ifdef DEBUG_CONFIG_INFO
3605       printk(KERN_DEBUG "%s: wv_hw_config(): set %d multicast addresses:\n",
3606              dev->name, lp->mc_count);
3607       for(dmi=dev->mc_list; dmi; dmi=dmi->next)
3608         printk(KERN_DEBUG " %pM\n", dmi->dmi_addr);
3609 #endif
3610
3611       /* Initialize adapter's ethernet multicast addresses */
3612       outb(TX_BASE & 0xff, PIORL(base));
3613       outb(((TX_BASE >> 8) & PIORH_MASK) | PIORH_SEL_TX, PIORH(base));
3614       outb(addrs_len & 0xff, PIOP(base));       /* byte count lsb */
3615       outb((addrs_len >> 8), PIOP(base));       /* byte count msb */
3616       for(dmi=dev->mc_list; dmi; dmi=dmi->next)
3617         outsb(PIOP(base), dmi->dmi_addr, dmi->dmi_addrlen);
3618
3619       /* reset transmit DMA pointer */
3620       hacr_write_slow(base, HACR_PWR_STAT | HACR_TX_DMA_RESET);
3621       hacr_write(base, HACR_DEFAULT);
3622       if(!wv_82593_cmd(dev, "wv_82593_config(): mc-setup",
3623                        OP0_MC_SETUP, SR0_MC_SETUP_DONE))
3624         ret = FALSE;
3625       lp->mc_count = dev->mc_count;     /* remember to avoid repeated reset */
3626     }
3627
3628   /* Job done, clear the flag */
3629   lp->reconfig_82593 = FALSE;
3630
3631 #ifdef DEBUG_CONFIG_TRACE
3632   printk(KERN_DEBUG "%s: <-wv_82593_config()\n", dev->name);
3633 #endif
3634   return(ret);
3635 }
3636
3637 /*------------------------------------------------------------------*/
3638 /*
3639  * Read the Access Configuration Register, perform a software reset,
3640  * and then re-enable the card's software.
3641  *
3642  * If I understand correctly : reset the pcmcia interface of the
3643  * wavelan.
3644  * (called by wv_config())
3645  */
3646 static int
3647 wv_pcmcia_reset(struct net_device *     dev)
3648 {
3649   int           i;
3650   conf_reg_t    reg = { 0, CS_READ, CISREG_COR, 0 };
3651   struct pcmcia_device *        link = ((net_local *)netdev_priv(dev))->link;
3652
3653 #ifdef DEBUG_CONFIG_TRACE
3654   printk(KERN_DEBUG "%s: ->wv_pcmcia_reset()\n", dev->name);
3655 #endif
3656
3657   i = pcmcia_access_configuration_register(link, &reg);
3658   if (i != 0)
3659     {
3660       cs_error(link, AccessConfigurationRegister, i);
3661       return FALSE;
3662     }
3663
3664 #ifdef DEBUG_CONFIG_INFO
3665   printk(KERN_DEBUG "%s: wavelan_pcmcia_reset(): Config reg is 0x%x\n",
3666          dev->name, (u_int) reg.Value);
3667 #endif
3668
3669   reg.Action = CS_WRITE;
3670   reg.Value = reg.Value | COR_SW_RESET;
3671   i = pcmcia_access_configuration_register(link, &reg);
3672   if (i != 0)
3673     {
3674       cs_error(link, AccessConfigurationRegister, i);
3675       return FALSE;
3676     }
3677
3678   reg.Action = CS_WRITE;
3679   reg.Value = COR_LEVEL_IRQ | COR_CONFIG;
3680   i = pcmcia_access_configuration_register(link, &reg);
3681   if (i != 0)
3682     {
3683       cs_error(link, AccessConfigurationRegister, i);
3684       return FALSE;
3685     }
3686
3687 #ifdef DEBUG_CONFIG_TRACE
3688   printk(KERN_DEBUG "%s: <-wv_pcmcia_reset()\n", dev->name);
3689 #endif
3690   return TRUE;
3691 }
3692
3693 /*------------------------------------------------------------------*/
3694 /*
3695  * wavelan_hw_config() is called after a CARD_INSERTION event is
3696  * received, to configure the wavelan hardware.
3697  * Note that the reception will be enabled in wavelan->open(), so the
3698  * device is configured but idle...
3699  * Performs the following actions:
3700  *      1. A pcmcia software reset (using wv_pcmcia_reset())
3701  *      2. A power reset (reset DMA)
3702  *      3. Reset the LAN controller
3703  *      4. Initialize the radio modem (using wv_mmc_init)
3704  *      5. Configure LAN controller (using wv_82593_config)
3705  *      6. Perform a diagnostic on the LAN controller
3706  * (called by wavelan_event() & wv_hw_reset())
3707  */
3708 static int
3709 wv_hw_config(struct net_device *        dev)
3710 {
3711   net_local *           lp = netdev_priv(dev);
3712   unsigned int          base = dev->base_addr;
3713   unsigned long         flags;
3714   int                   ret = FALSE;
3715
3716 #ifdef DEBUG_CONFIG_TRACE
3717   printk(KERN_DEBUG "%s: ->wv_hw_config()\n", dev->name);
3718 #endif
3719
3720   /* compile-time check the sizes of structures */
3721   BUILD_BUG_ON(sizeof(psa_t) != PSA_SIZE);
3722   BUILD_BUG_ON(sizeof(mmw_t) != MMW_SIZE);
3723   BUILD_BUG_ON(sizeof(mmr_t) != MMR_SIZE);
3724
3725   /* Reset the pcmcia interface */
3726   if(wv_pcmcia_reset(dev) == FALSE)
3727     return FALSE;
3728
3729   /* Disable interrupts */
3730   spin_lock_irqsave(&lp->spinlock, flags);
3731
3732   /* Disguised goto ;-) */
3733   do
3734     {
3735       /* Power UP the module + reset the modem + reset host adapter
3736        * (in fact, reset DMA channels) */
3737       hacr_write_slow(base, HACR_RESET);
3738       hacr_write(base, HACR_DEFAULT);
3739
3740       /* Check if the module has been powered up... */
3741       if(hasr_read(base) & HASR_NO_CLK)
3742         {
3743 #ifdef DEBUG_CONFIG_ERRORS
3744           printk(KERN_WARNING "%s: wv_hw_config(): modem not connected or not a wavelan card\n",
3745                  dev->name);
3746 #endif
3747           break;
3748         }
3749
3750       /* initialize the modem */
3751       if(wv_mmc_init(dev) == FALSE)
3752         {
3753 #ifdef DEBUG_CONFIG_ERRORS
3754           printk(KERN_WARNING "%s: wv_hw_config(): Can't configure the modem\n",
3755                  dev->name);
3756 #endif
3757           break;
3758         }
3759
3760       /* reset the LAN controller (i82593) */
3761       outb(OP0_RESET, LCCR(base));
3762       mdelay(1);        /* A bit crude ! */
3763
3764       /* Initialize the LAN controller */
3765       if(wv_82593_config(dev) == FALSE)
3766         {
3767 #ifdef DEBUG_CONFIG_ERRORS
3768           printk(KERN_INFO "%s: wv_hw_config(): i82593 init failed\n",
3769                  dev->name);
3770 #endif
3771           break;
3772         }
3773
3774       /* Diagnostic */
3775       if(wv_diag(dev) == FALSE)
3776         {
3777 #ifdef DEBUG_CONFIG_ERRORS
3778           printk(KERN_INFO "%s: wv_hw_config(): i82593 diagnostic failed\n",
3779                  dev->name);
3780 #endif
3781           break;
3782         }
3783
3784       /*
3785        * insert code for loopback test here
3786        */
3787
3788       /* The device is now configured */
3789       lp->configured = 1;
3790       ret = TRUE;
3791     }
3792   while(0);
3793
3794   /* Re-enable interrupts */
3795   spin_unlock_irqrestore(&lp->spinlock, flags);
3796
3797 #ifdef DEBUG_CONFIG_TRACE
3798   printk(KERN_DEBUG "%s: <-wv_hw_config()\n", dev->name);
3799 #endif
3800   return(ret);
3801 }
3802
3803 /*------------------------------------------------------------------*/
3804 /*
3805  * Totally reset the wavelan and restart it.
3806  * Performs the following actions:
3807  *      1. Call wv_hw_config()
3808  *      2. Start the LAN controller's receive unit
3809  * (called by wavelan_event(), wavelan_watchdog() and wavelan_open())
3810  */
3811 static void
3812 wv_hw_reset(struct net_device * dev)
3813 {
3814   net_local *   lp = netdev_priv(dev);
3815
3816 #ifdef DEBUG_CONFIG_TRACE
3817   printk(KERN_DEBUG "%s: ->wv_hw_reset()\n", dev->name);
3818 #endif
3819
3820   lp->nresets++;
3821   lp->configured = 0;
3822
3823   /* Call wv_hw_config() for most of the reset & init stuff */
3824   if(wv_hw_config(dev) == FALSE)
3825     return;
3826
3827   /* start receive unit */
3828   wv_ru_start(dev);
3829
3830 #ifdef DEBUG_CONFIG_TRACE
3831   printk(KERN_DEBUG "%s: <-wv_hw_reset()\n", dev->name);
3832 #endif
3833 }
3834
3835 /*------------------------------------------------------------------*/
3836 /*
3837  * wv_pcmcia_config() is called after a CARD_INSERTION event is
3838  * received, to configure the PCMCIA socket, and to make the ethernet
3839  * device available to the system.
3840  * (called by wavelan_event())
3841  */
3842 static int
3843 wv_pcmcia_config(struct pcmcia_device * link)
3844 {
3845   struct net_device *   dev = (struct net_device *) link->priv;
3846   int                   i;
3847   win_req_t             req;
3848   memreq_t              mem;
3849   net_local *           lp = netdev_priv(dev);
3850
3851
3852 #ifdef DEBUG_CONFIG_TRACE
3853   printk(KERN_DEBUG "->wv_pcmcia_config(0x%p)\n", link);
3854 #endif
3855
3856   do
3857     {
3858       i = pcmcia_request_io(link, &link->io);
3859       if (i != 0)
3860         {
3861           cs_error(link, RequestIO, i);
3862           break;
3863         }
3864
3865       /*
3866        * Now allocate an interrupt line.  Note that this does not
3867        * actually assign a handler to the interrupt.
3868        */
3869       i = pcmcia_request_irq(link, &link->irq);
3870       if (i != 0)
3871         {
3872           cs_error(link, RequestIRQ, i);
3873           break;
3874         }
3875
3876       /*
3877        * This actually configures the PCMCIA socket -- setting up
3878        * the I/O windows and the interrupt mapping.
3879        */
3880       link->conf.ConfigIndex = 1;
3881       i = pcmcia_request_configuration(link, &link->conf);
3882       if (i != 0)
3883         {
3884           cs_error(link, RequestConfiguration, i);
3885           break;
3886         }
3887
3888       /*
3889        * Allocate a small memory window.  Note that the struct pcmcia_device
3890        * structure provides space for one window handle -- if your
3891        * device needs several windows, you'll need to keep track of
3892        * the handles in your private data structure, link->priv.
3893        */
3894       req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE;
3895       req.Base = req.Size = 0;
3896       req.AccessSpeed = mem_speed;
3897       i = pcmcia_request_window(&link, &req, &link->win);
3898       if (i != 0)
3899         {
3900           cs_error(link, RequestWindow, i);
3901           break;
3902         }
3903
3904       lp->mem = ioremap(req.Base, req.Size);
3905       dev->mem_start = (u_long)lp->mem;
3906       dev->mem_end = dev->mem_start + req.Size;
3907
3908       mem.CardOffset = 0; mem.Page = 0;
3909       i = pcmcia_map_mem_page(link->win, &mem);
3910       if (i != 0)
3911         {
3912           cs_error(link, MapMemPage, i);
3913           break;
3914         }
3915
3916       /* Feed device with this info... */
3917       dev->irq = link->irq.AssignedIRQ;
3918       dev->base_addr = link->io.BasePort1;
3919       netif_start_queue(dev);
3920
3921 #ifdef DEBUG_CONFIG_INFO
3922       printk(KERN_DEBUG "wv_pcmcia_config: MEMSTART %p IRQ %d IOPORT 0x%x\n",
3923              lp->mem, dev->irq, (u_int) dev->base_addr);
3924 #endif
3925
3926       SET_NETDEV_DEV(dev, &handle_to_dev(link));
3927       i = register_netdev(dev);
3928       if(i != 0)
3929         {
3930 #ifdef DEBUG_CONFIG_ERRORS
3931           printk(KERN_INFO "wv_pcmcia_config(): register_netdev() failed\n");
3932 #endif
3933           break;
3934         }
3935     }
3936   while(0);             /* Humm... Disguised goto !!! */
3937
3938   /* If any step failed, release any partially configured state */
3939   if(i != 0)
3940     {
3941       wv_pcmcia_release(link);
3942       return FALSE;
3943     }
3944
3945   strcpy(((net_local *) netdev_priv(dev))->node.dev_name, dev->name);
3946   link->dev_node = &((net_local *) netdev_priv(dev))->node;
3947
3948 #ifdef DEBUG_CONFIG_TRACE
3949   printk(KERN_DEBUG "<-wv_pcmcia_config()\n");
3950 #endif
3951   return TRUE;
3952 }
3953
3954 /*------------------------------------------------------------------*/
3955 /*
3956  * After a card is removed, wv_pcmcia_release() will unregister the net
3957  * device, and release the PCMCIA configuration.  If the device is
3958  * still open, this will be postponed until it is closed.
3959  */
3960 static void
3961 wv_pcmcia_release(struct pcmcia_device *link)
3962 {
3963         struct net_device *     dev = (struct net_device *) link->priv;
3964         net_local *             lp = netdev_priv(dev);
3965
3966 #ifdef DEBUG_CONFIG_TRACE
3967         printk(KERN_DEBUG "%s: -> wv_pcmcia_release(0x%p)\n", dev->name, link);
3968 #endif
3969
3970         iounmap(lp->mem);
3971         pcmcia_disable_device(link);
3972
3973 #ifdef DEBUG_CONFIG_TRACE
3974         printk(KERN_DEBUG "%s: <- wv_pcmcia_release()\n", dev->name);
3975 #endif
3976 }
3977
3978 /************************ INTERRUPT HANDLING ************************/
3979
3980 /*
3981  * This function is the interrupt handler for the WaveLAN card. This
3982  * routine will be called whenever:
3983  *      1. A packet is received.
3984  *      2. A packet has successfully been transferred and the unit is
3985  *         ready to transmit another packet.
3986  *      3. A command has completed execution.
3987  */
3988 static irqreturn_t
3989 wavelan_interrupt(int           irq,
3990                   void *        dev_id)
3991 {
3992   struct net_device *   dev = dev_id;
3993   net_local *   lp;
3994   unsigned int  base;
3995   int           status0;
3996   u_int         tx_status;
3997
3998 #ifdef DEBUG_INTERRUPT_TRACE
3999   printk(KERN_DEBUG "%s: ->wavelan_interrupt()\n", dev->name);
4000 #endif
4001
4002   lp = netdev_priv(dev);
4003   base = dev->base_addr;
4004
4005 #ifdef DEBUG_INTERRUPT_INFO
4006   /* Check state of our spinlock (it should be cleared) */
4007   if(spin_is_locked(&lp->spinlock))
4008     printk(KERN_DEBUG
4009            "%s: wavelan_interrupt(): spinlock is already locked !!!\n",
4010            dev->name);
4011 #endif
4012
4013   /* Prevent reentrancy. We need to do that because we may have
4014    * multiple interrupt handler running concurently.
4015    * It is safe because interrupts are disabled before aquiring
4016    * the spinlock. */
4017   spin_lock(&lp->spinlock);
4018
4019   /* Treat all pending interrupts */
4020   while(1)
4021     {
4022       /* ---------------- INTERRUPT CHECKING ---------------- */
4023       /*
4024        * Look for the interrupt and verify the validity
4025        */
4026       outb(CR0_STATUS_0 | OP0_NOP, LCCR(base));
4027       status0 = inb(LCSR(base));
4028
4029 #ifdef DEBUG_INTERRUPT_INFO
4030       printk(KERN_DEBUG "status0 0x%x [%s => 0x%x]", status0,
4031              (status0&SR0_INTERRUPT)?"int":"no int",status0&~SR0_INTERRUPT);
4032       if(status0&SR0_INTERRUPT)
4033         {
4034           printk(" [%s => %d]\n", (status0 & SR0_CHNL) ? "chnl" :
4035                  ((status0 & SR0_EXECUTION) ? "cmd" :
4036                   ((status0 & SR0_RECEPTION) ? "recv" : "unknown")),
4037                  (status0 & SR0_EVENT_MASK));
4038         }
4039       else
4040         printk("\n");
4041 #endif
4042
4043       /* Return if no actual interrupt from i82593 (normal exit) */
4044       if(!(status0 & SR0_INTERRUPT))
4045         break;
4046
4047       /* If interrupt is both Rx and Tx or none...
4048        * This code in fact is there to catch the spurious interrupt
4049        * when you remove the wavelan pcmcia card from the socket */
4050       if(((status0 & SR0_BOTH_RX_TX) == SR0_BOTH_RX_TX) ||
4051          ((status0 & SR0_BOTH_RX_TX) == 0x0))
4052         {
4053 #ifdef DEBUG_INTERRUPT_INFO
4054           printk(KERN_INFO "%s: wv_interrupt(): bogus interrupt (or from dead card) : %X\n",
4055                  dev->name, status0);
4056 #endif
4057           /* Acknowledge the interrupt */
4058           outb(CR0_INT_ACK | OP0_NOP, LCCR(base));
4059           break;
4060         }
4061
4062       /* ----------------- RECEIVING PACKET ----------------- */
4063       /*
4064        * When the wavelan signal the reception of a new packet,
4065        * we call wv_packet_rcv() to copy if from the buffer and
4066        * send it to NET3
4067        */
4068       if(status0 & SR0_RECEPTION)
4069         {
4070 #ifdef DEBUG_INTERRUPT_INFO
4071           printk(KERN_DEBUG "%s: wv_interrupt(): receive\n", dev->name);
4072 #endif
4073
4074           if((status0 & SR0_EVENT_MASK) == SR0_STOP_REG_HIT)
4075             {
4076 #ifdef DEBUG_INTERRUPT_ERROR
4077               printk(KERN_INFO "%s: wv_interrupt(): receive buffer overflow\n",
4078                      dev->name);
4079 #endif
4080               dev->stats.rx_over_errors++;
4081               lp->overrunning = 1;
4082             }
4083
4084           /* Get the packet */
4085           wv_packet_rcv(dev);
4086           lp->overrunning = 0;
4087
4088           /* Acknowledge the interrupt */
4089           outb(CR0_INT_ACK | OP0_NOP, LCCR(base));
4090           continue;
4091         }
4092
4093       /* ---------------- COMMAND COMPLETION ---------------- */
4094       /*
4095        * Interrupts issued when the i82593 has completed a command.
4096        * Most likely : transmission done
4097        */
4098
4099       /* If a transmission has been done */
4100       if((status0 & SR0_EVENT_MASK) == SR0_TRANSMIT_DONE ||
4101          (status0 & SR0_EVENT_MASK) == SR0_RETRANSMIT_DONE ||
4102          (status0 & SR0_EVENT_MASK) == SR0_TRANSMIT_NO_CRC_DONE)
4103         {
4104 #ifdef DEBUG_TX_ERROR
4105           if((status0 & SR0_EVENT_MASK) == SR0_TRANSMIT_NO_CRC_DONE)
4106             printk(KERN_INFO "%s: wv_interrupt(): packet transmitted without CRC.\n",
4107                    dev->name);
4108 #endif
4109
4110           /* Get transmission status */
4111           tx_status = inb(LCSR(base));
4112           tx_status |= (inb(LCSR(base)) << 8);
4113 #ifdef DEBUG_INTERRUPT_INFO
4114           printk(KERN_DEBUG "%s: wv_interrupt(): transmission done\n",
4115                  dev->name);
4116           {
4117             u_int       rcv_bytes;
4118             u_char      status3;
4119             rcv_bytes = inb(LCSR(base));
4120             rcv_bytes |= (inb(LCSR(base)) << 8);
4121             status3 = inb(LCSR(base));
4122             printk(KERN_DEBUG "tx_status 0x%02x rcv_bytes 0x%02x status3 0x%x\n",
4123                    tx_status, rcv_bytes, (u_int) status3);
4124           }
4125 #endif
4126           /* Check for possible errors */
4127           if((tx_status & TX_OK) != TX_OK)
4128             {
4129               dev->stats.tx_errors++;
4130
4131               if(tx_status & TX_FRTL)
4132                 {
4133 #ifdef DEBUG_TX_ERROR
4134                   printk(KERN_INFO "%s: wv_interrupt(): frame too long\n",
4135                          dev->name);
4136 #endif
4137                 }
4138               if(tx_status & TX_UND_RUN)
4139                 {
4140 #ifdef DEBUG_TX_FAIL
4141                   printk(KERN_DEBUG "%s: wv_interrupt(): DMA underrun\n",
4142                          dev->name);
4143 #endif
4144                   dev->stats.tx_aborted_errors++;
4145                 }
4146               if(tx_status & TX_LOST_CTS)
4147                 {
4148 #ifdef DEBUG_TX_FAIL
4149                   printk(KERN_DEBUG "%s: wv_interrupt(): no CTS\n", dev->name);
4150 #endif
4151                   dev->stats.tx_carrier_errors++;
4152                 }
4153               if(tx_status & TX_LOST_CRS)
4154                 {
4155 #ifdef DEBUG_TX_FAIL
4156                   printk(KERN_DEBUG "%s: wv_interrupt(): no carrier\n",
4157                          dev->name);
4158 #endif
4159                   dev->stats.tx_carrier_errors++;
4160                 }
4161               if(tx_status & TX_HRT_BEAT)
4162                 {
4163 #ifdef DEBUG_TX_FAIL
4164                   printk(KERN_DEBUG "%s: wv_interrupt(): heart beat\n", dev->name);
4165 #endif
4166                   dev->stats.tx_heartbeat_errors++;
4167                 }
4168               if(tx_status & TX_DEFER)
4169                 {
4170 #ifdef DEBUG_TX_FAIL
4171                   printk(KERN_DEBUG "%s: wv_interrupt(): channel jammed\n",
4172                          dev->name);
4173 #endif
4174                 }
4175               /* Ignore late collisions since they're more likely to happen
4176                * here (the WaveLAN design prevents the LAN controller from
4177                * receiving while it is transmitting). We take action only when
4178                * the maximum retransmit attempts is exceeded.
4179                */
4180               if(tx_status & TX_COLL)
4181                 {
4182                   if(tx_status & TX_MAX_COL)
4183                     {
4184 #ifdef DEBUG_TX_FAIL
4185                       printk(KERN_DEBUG "%s: wv_interrupt(): channel congestion\n",
4186                              dev->name);
4187 #endif
4188                       if(!(tx_status & TX_NCOL_MASK))
4189                         {
4190                           dev->stats.collisions += 0x10;
4191                         }
4192                     }
4193                 }
4194             }   /* if(!(tx_status & TX_OK)) */
4195
4196           dev->stats.collisions += (tx_status & TX_NCOL_MASK);
4197           dev->stats.tx_packets++;
4198
4199           netif_wake_queue(dev);
4200           outb(CR0_INT_ACK | OP0_NOP, LCCR(base));      /* Acknowledge the interrupt */
4201         }
4202       else      /* if interrupt = transmit done or retransmit done */
4203         {
4204 #ifdef DEBUG_INTERRUPT_ERROR
4205           printk(KERN_INFO "wavelan_cs: unknown interrupt, status0 = %02x\n",
4206                  status0);
4207 #endif
4208           outb(CR0_INT_ACK | OP0_NOP, LCCR(base));      /* Acknowledge the interrupt */
4209         }
4210     }   /* while(1) */
4211
4212   spin_unlock(&lp->spinlock);
4213
4214 #ifdef DEBUG_INTERRUPT_TRACE
4215   printk(KERN_DEBUG "%s: <-wavelan_interrupt()\n", dev->name);
4216 #endif
4217
4218   /* We always return IRQ_HANDLED, because we will receive empty
4219    * interrupts under normal operations. Anyway, it doesn't matter
4220    * as we are dealing with an ISA interrupt that can't be shared.
4221    *
4222    * Explanation : under heavy receive, the following happens :
4223    * ->wavelan_interrupt()
4224    *    (status0 & SR0_INTERRUPT) != 0
4225    *       ->wv_packet_rcv()
4226    *    (status0 & SR0_INTERRUPT) != 0
4227    *       ->wv_packet_rcv()
4228    *    (status0 & SR0_INTERRUPT) == 0  // i.e. no more event
4229    * <-wavelan_interrupt()
4230    * ->wavelan_interrupt()
4231    *    (status0 & SR0_INTERRUPT) == 0  // i.e. empty interrupt
4232    * <-wavelan_interrupt()
4233    * Jean II */
4234   return IRQ_HANDLED;
4235 } /* wv_interrupt */
4236
4237 /*------------------------------------------------------------------*/
4238 /*
4239  * Watchdog: when we start a transmission, a timer is set for us in the
4240  * kernel.  If the transmission completes, this timer is disabled. If
4241  * the timer expires, we are called and we try to unlock the hardware.
4242  *
4243  * Note : This watchdog is move clever than the one in the ISA driver,
4244  * because it try to abort the current command before reseting
4245  * everything...
4246  * On the other hand, it's a bit simpler, because we don't have to
4247  * deal with the multiple Tx buffers...
4248  */
4249 static void
4250 wavelan_watchdog(struct net_device *    dev)
4251 {
4252   net_local *           lp = netdev_priv(dev);
4253   unsigned int          base = dev->base_addr;
4254   unsigned long         flags;
4255   int                   aborted = FALSE;
4256
4257 #ifdef DEBUG_INTERRUPT_TRACE
4258   printk(KERN_DEBUG "%s: ->wavelan_watchdog()\n", dev->name);
4259 #endif
4260
4261 #ifdef DEBUG_INTERRUPT_ERROR
4262   printk(KERN_INFO "%s: wavelan_watchdog: watchdog timer expired\n",
4263          dev->name);
4264 #endif
4265
4266   spin_lock_irqsave(&lp->spinlock, flags);
4267
4268   /* Ask to abort the current command */
4269   outb(OP0_ABORT, LCCR(base));
4270
4271   /* Wait for the end of the command (a bit hackish) */
4272   if(wv_82593_cmd(dev, "wavelan_watchdog(): abort",
4273                   OP0_NOP | CR0_STATUS_3, SR0_EXECUTION_ABORTED))
4274     aborted = TRUE;
4275
4276   /* Release spinlock here so that wv_hw_reset() can grab it */
4277   spin_unlock_irqrestore(&lp->spinlock, flags);
4278
4279   /* Check if we were successful in aborting it */
4280   if(!aborted)
4281     {
4282       /* It seem that it wasn't enough */
4283 #ifdef DEBUG_INTERRUPT_ERROR
4284       printk(KERN_INFO "%s: wavelan_watchdog: abort failed, trying reset\n",
4285              dev->name);
4286 #endif
4287       wv_hw_reset(dev);
4288     }
4289
4290 #ifdef DEBUG_PSA_SHOW
4291   {
4292     psa_t               psa;
4293     psa_read(dev, 0, (unsigned char *) &psa, sizeof(psa));
4294     wv_psa_show(&psa);
4295   }
4296 #endif
4297 #ifdef DEBUG_MMC_SHOW
4298   wv_mmc_show(dev);
4299 #endif
4300 #ifdef DEBUG_I82593_SHOW
4301   wv_ru_show(dev);
4302 #endif
4303
4304   /* We are no more waiting for something... */
4305   netif_wake_queue(dev);
4306
4307 #ifdef DEBUG_INTERRUPT_TRACE
4308   printk(KERN_DEBUG "%s: <-wavelan_watchdog()\n", dev->name);
4309 #endif
4310 }
4311
4312 /********************* CONFIGURATION CALLBACKS *********************/
4313 /*
4314  * Here are the functions called by the pcmcia package (cardmgr) and
4315  * linux networking (NET3) for initialization, configuration and
4316  * deinstallations of the Wavelan Pcmcia Hardware.
4317  */
4318
4319 /*------------------------------------------------------------------*/
4320 /*
4321  * Configure and start up the WaveLAN PCMCIA adaptor.
4322  * Called by NET3 when it "open" the device.
4323  */
4324 static int
4325 wavelan_open(struct net_device *        dev)
4326 {
4327   net_local *   lp = netdev_priv(dev);
4328   struct pcmcia_device *        link = lp->link;
4329   unsigned int  base = dev->base_addr;
4330
4331 #ifdef DEBUG_CALLBACK_TRACE
4332   printk(KERN_DEBUG "%s: ->wavelan_open(dev=0x%x)\n", dev->name,
4333          (unsigned int) dev);
4334 #endif
4335
4336   /* Check if the modem is powered up (wavelan_close() power it down */
4337   if(hasr_read(base) & HASR_NO_CLK)
4338     {
4339       /* Power up (power up time is 250us) */
4340       hacr_write(base, HACR_DEFAULT);
4341
4342       /* Check if the module has been powered up... */
4343       if(hasr_read(base) & HASR_NO_CLK)
4344         {
4345 #ifdef DEBUG_CONFIG_ERRORS
4346           printk(KERN_WARNING "%s: wavelan_open(): modem not connected\n",
4347                  dev->name);
4348 #endif
4349           return FALSE;
4350         }
4351     }
4352
4353   /* Start reception and declare the driver ready */
4354   if(!lp->configured)
4355     return FALSE;
4356   if(!wv_ru_start(dev))
4357     wv_hw_reset(dev);           /* If problem : reset */
4358   netif_start_queue(dev);
4359
4360   /* Mark the device as used */
4361   link->open++;
4362
4363 #ifdef WAVELAN_ROAMING
4364   if(do_roaming)
4365     wv_roam_init(dev);
4366 #endif  /* WAVELAN_ROAMING */
4367
4368 #ifdef DEBUG_CALLBACK_TRACE
4369   printk(KERN_DEBUG "%s: <-wavelan_open()\n", dev->name);
4370 #endif
4371   return 0;
4372 }
4373
4374 /*------------------------------------------------------------------*/
4375 /*
4376  * Shutdown the WaveLAN PCMCIA adaptor.
4377  * Called by NET3 when it "close" the device.
4378  */
4379 static int
4380 wavelan_close(struct net_device *       dev)
4381 {
4382   struct pcmcia_device *        link = ((net_local *)netdev_priv(dev))->link;
4383   unsigned int  base = dev->base_addr;
4384
4385 #ifdef DEBUG_CALLBACK_TRACE
4386   printk(KERN_DEBUG "%s: ->wavelan_close(dev=0x%x)\n", dev->name,
4387          (unsigned int) dev);
4388 #endif
4389
4390   /* If the device isn't open, then nothing to do */
4391   if(!link->open)
4392     {
4393 #ifdef DEBUG_CONFIG_INFO
4394       printk(KERN_DEBUG "%s: wavelan_close(): device not open\n", dev->name);
4395 #endif
4396       return 0;
4397     }
4398
4399 #ifdef WAVELAN_ROAMING
4400   /* Cleanup of roaming stuff... */
4401   if(do_roaming)
4402     wv_roam_cleanup(dev);
4403 #endif  /* WAVELAN_ROAMING */
4404
4405   link->open--;
4406
4407   /* If the card is still present */
4408   if(netif_running(dev))
4409     {
4410       netif_stop_queue(dev);
4411
4412       /* Stop receiving new messages and wait end of transmission */
4413       wv_ru_stop(dev);
4414
4415       /* Power down the module */
4416       hacr_write(base, HACR_DEFAULT & (~HACR_PWR_STAT));
4417     }
4418
4419 #ifdef DEBUG_CALLBACK_TRACE
4420   printk(KERN_DEBUG "%s: <-wavelan_close()\n", dev->name);
4421 #endif
4422   return 0;
4423 }
4424
4425 static const struct net_device_ops wavelan_netdev_ops = {
4426         .ndo_open               = wavelan_open,
4427         .ndo_stop               = wavelan_close,
4428         .ndo_start_xmit         = wavelan_packet_xmit,
4429         .ndo_set_multicast_list = wavelan_set_multicast_list,
4430 #ifdef SET_MAC_ADDRESS
4431         .ndo_set_mac_address    = wavelan_set_mac_address,
4432 #endif
4433         .ndo_tx_timeout         = wavelan_watchdog,
4434         .ndo_change_mtu         = eth_change_mtu,
4435         .ndo_validate_addr      = eth_validate_addr,
4436 };
4437
4438 /*------------------------------------------------------------------*/
4439 /*
4440  * wavelan_attach() creates an "instance" of the driver, allocating
4441  * local data structures for one device (one interface).  The device
4442  * is registered with Card Services.
4443  *
4444  * The dev_link structure is initialized, but we don't actually
4445  * configure the card at this point -- we wait until we receive a
4446  * card insertion event.
4447  */
4448 static int
4449 wavelan_probe(struct pcmcia_device *p_dev)
4450 {
4451   struct net_device *   dev;            /* Interface generic data */
4452   net_local *   lp;             /* Interface specific data */
4453   int ret;
4454
4455 #ifdef DEBUG_CALLBACK_TRACE
4456   printk(KERN_DEBUG "-> wavelan_attach()\n");
4457 #endif
4458
4459   /* The io structure describes IO port mapping */
4460   p_dev->io.NumPorts1 = 8;
4461   p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
4462   p_dev->io.IOAddrLines = 3;
4463
4464   /* Interrupt setup */
4465   p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
4466   p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID;
4467   p_dev->irq.Handler = wavelan_interrupt;
4468
4469   /* General socket configuration */
4470   p_dev->conf.Attributes = CONF_ENABLE_IRQ;
4471   p_dev->conf.IntType = INT_MEMORY_AND_IO;
4472
4473   /* Allocate the generic data structure */
4474   dev = alloc_etherdev(sizeof(net_local));
4475   if (!dev)
4476       return -ENOMEM;
4477
4478   p_dev->priv = p_dev->irq.Instance = dev;
4479
4480   lp = netdev_priv(dev);
4481
4482   /* Init specific data */
4483   lp->configured = 0;
4484   lp->reconfig_82593 = FALSE;
4485   lp->nresets = 0;
4486   /* Multicast stuff */
4487   lp->promiscuous = 0;
4488   lp->allmulticast = 0;
4489   lp->mc_count = 0;
4490
4491   /* Init spinlock */
4492   spin_lock_init(&lp->spinlock);
4493
4494   /* back links */
4495   lp->dev = dev;
4496
4497   /* wavelan NET3 callbacks */
4498   dev->netdev_ops = &wavelan_netdev_ops;
4499   dev->watchdog_timeo   = WATCHDOG_JIFFIES;
4500   SET_ETHTOOL_OPS(dev, &ops);
4501
4502   dev->wireless_handlers = &wavelan_handler_def;
4503   lp->wireless_data.spy_data = &lp->spy_data;
4504   dev->wireless_data = &lp->wireless_data;
4505
4506   /* Other specific data */
4507   dev->mtu = WAVELAN_MTU;
4508
4509   ret = wv_pcmcia_config(p_dev);
4510   if (ret)
4511           return ret;
4512
4513   ret = wv_hw_config(dev);
4514   if (ret) {
4515           dev->irq = 0;
4516           pcmcia_disable_device(p_dev);
4517           return ret;
4518   }
4519
4520   wv_init_info(dev);
4521
4522 #ifdef DEBUG_CALLBACK_TRACE
4523   printk(KERN_DEBUG "<- wavelan_attach()\n");
4524 #endif
4525
4526   return 0;
4527 }
4528
4529 /*------------------------------------------------------------------*/
4530 /*
4531  * This deletes a driver "instance".  The device is de-registered with
4532  * Card Services.  If it has been released, all local data structures
4533  * are freed.  Otherwise, the structures will be freed when the device
4534  * is released.
4535  */
4536 static void
4537 wavelan_detach(struct pcmcia_device *link)
4538 {
4539 #ifdef DEBUG_CALLBACK_TRACE
4540   printk(KERN_DEBUG "-> wavelan_detach(0x%p)\n", link);
4541 #endif
4542
4543   /* Some others haven't done their job : give them another chance */
4544   wv_pcmcia_release(link);
4545
4546   /* Free pieces */
4547   if(link->priv)
4548     {
4549       struct net_device *       dev = (struct net_device *) link->priv;
4550
4551       /* Remove ourselves from the kernel list of ethernet devices */
4552       /* Warning : can't be called from interrupt, timer or wavelan_close() */
4553       if (link->dev_node)
4554         unregister_netdev(dev);
4555       link->dev_node = NULL;
4556       ((net_local *)netdev_priv(dev))->link = NULL;
4557       ((net_local *)netdev_priv(dev))->dev = NULL;
4558       free_netdev(dev);
4559     }
4560
4561 #ifdef DEBUG_CALLBACK_TRACE
4562   printk(KERN_DEBUG "<- wavelan_detach()\n");
4563 #endif
4564 }
4565
4566 static int wavelan_suspend(struct pcmcia_device *link)
4567 {
4568         struct net_device *     dev = (struct net_device *) link->priv;
4569
4570         /* NB: wavelan_close will be called, but too late, so we are
4571          * obliged to close nicely the wavelan here. David, could you
4572          * close the device before suspending them ? And, by the way,
4573          * could you, on resume, add a "route add -net ..." after the
4574          * ifconfig up ? Thanks... */
4575
4576         /* Stop receiving new messages and wait end of transmission */
4577         wv_ru_stop(dev);
4578
4579         if (link->open)
4580                 netif_device_detach(dev);
4581
4582         /* Power down the module */
4583         hacr_write(dev->base_addr, HACR_DEFAULT & (~HACR_PWR_STAT));
4584
4585         return 0;
4586 }
4587
4588 static int wavelan_resume(struct pcmcia_device *link)
4589 {
4590         struct net_device *     dev = (struct net_device *) link->priv;
4591
4592         if (link->open) {
4593                 wv_hw_reset(dev);
4594                 netif_device_attach(dev);
4595         }
4596
4597         return 0;
4598 }
4599
4600
4601 static struct pcmcia_device_id wavelan_ids[] = {
4602         PCMCIA_DEVICE_PROD_ID12("AT&T","WaveLAN/PCMCIA", 0xe7c5affd, 0x1bc50975),
4603         PCMCIA_DEVICE_PROD_ID12("Digital", "RoamAbout/DS", 0x9999ab35, 0x00d05e06),
4604         PCMCIA_DEVICE_PROD_ID12("Lucent Technologies", "WaveLAN/PCMCIA", 0x23eb9949, 0x1bc50975),
4605         PCMCIA_DEVICE_PROD_ID12("NCR", "WaveLAN/PCMCIA", 0x24358cd4, 0x1bc50975),
4606         PCMCIA_DEVICE_NULL,
4607 };
4608 MODULE_DEVICE_TABLE(pcmcia, wavelan_ids);
4609
4610 static struct pcmcia_driver wavelan_driver = {
4611         .owner          = THIS_MODULE,
4612         .drv            = {
4613                 .name   = "wavelan_cs",
4614         },
4615         .probe          = wavelan_probe,
4616         .remove         = wavelan_detach,
4617         .id_table       = wavelan_ids,
4618         .suspend        = wavelan_suspend,
4619         .resume         = wavelan_resume,
4620 };
4621
4622 static int __init
4623 init_wavelan_cs(void)
4624 {
4625         return pcmcia_register_driver(&wavelan_driver);
4626 }
4627
4628 static void __exit
4629 exit_wavelan_cs(void)
4630 {
4631         pcmcia_unregister_driver(&wavelan_driver);
4632 }
4633
4634 module_init(init_wavelan_cs);
4635 module_exit(exit_wavelan_cs);