git.oblomov.eu Git - linux-2.6/blob - drivers/isdn/icn/icn.c

   1 /* $Id: icn.c,v 1.65.6.8 2001/09/23 22:24:55 kai Exp $
   2  *
   3  * ISDN low-level module for the ICN active ISDN-Card.
   4  *
   5  * Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de)
   6  *
   7  * This software may be used and distributed according to the terms
   8  * of the GNU General Public License, incorporated herein by reference.
   9  *
  10  */
  11
  12 #include "icn.h"
  13 #include <linux/module.h>
  14 #include <linux/init.h>
  15
  16 static int portbase = ICN_BASEADDR;
  17 static unsigned long membase = ICN_MEMADDR;
  18 static char *icn_id = "\0";
  19 static char *icn_id2 = "\0";
  20
  21 MODULE_DESCRIPTION("ISDN4Linux: Driver for ICN active ISDN card");
  22 MODULE_AUTHOR("Fritz Elfert");
  23 MODULE_LICENSE("GPL");
  24 module_param(portbase, int, 0);
  25 MODULE_PARM_DESC(portbase, "Port address of first card");
  26 module_param(membase, ulong, 0);
  27 MODULE_PARM_DESC(membase, "Shared memory address of all cards");
  28 module_param(icn_id, charp, 0);
  29 MODULE_PARM_DESC(icn_id, "ID-String of first card");
  30 module_param(icn_id2, charp, 0);
  31 MODULE_PARM_DESC(icn_id2, "ID-String of first card, second S0 (4B only)");
  32
  33 /*
  34  * Verbose bootcode- and protocol-downloading.
  35  */
  36 #undef BOOT_DEBUG
  37
  38 /*
  39  * Verbose Shmem-Mapping.
  40  */
  41 #undef MAP_DEBUG
  42
  43 static char
  44 *revision = "$Revision: 1.65.6.8 $";
  45
  46 static int icn_addcard(int, char *, char *);
  47
  48 /*
  49  * Free send-queue completely.
  50  * Parameter:
  51  *   card   = pointer to card struct
  52  *   channel = channel number
  53  */
  54 static void
  55 icn_free_queue(icn_card * card, int channel)
  56 {
  57         struct sk_buff_head *queue = &card->spqueue[channel];
  58         struct sk_buff *skb;
  59
  60         skb_queue_purge(queue);
  61         card->xlen[channel] = 0;
  62         card->sndcount[channel] = 0;
  63         if ((skb = card->xskb[channel])) {
  64                 card->xskb[channel] = NULL;
  65                 dev_kfree_skb(skb);
  66         }
  67 }
  68
  69 /* Put a value into a shift-register, highest bit first.
  70  * Parameters:
  71  *            port     = port for output (bit 0 is significant)
  72  *            val      = value to be output
  73  *            firstbit = Bit-Number of highest bit
  74  *            bitcount = Number of bits to output
  75  */
  76 static inline void
  77 icn_shiftout(unsigned short port,
  78              unsigned long val,
  79              int firstbit,
  80              int bitcount)
  81 {
  82
  83         register u_char s;
  84         register u_char c;
  85
  86         for (s = firstbit, c = bitcount; c > 0; s--, c--)
  87                 OUTB_P((u_char) ((val >> s) & 1) ? 0xff : 0, port);
  88 }
  89
  90 /*
  91  * disable a cards shared memory
  92  */
  93 static inline void
  94 icn_disable_ram(icn_card * card)
  95 {
  96         OUTB_P(0, ICN_MAPRAM);
  97 }
  98
  99 /*
 100  * enable a cards shared memory
 101  */
 102 static inline void
 103 icn_enable_ram(icn_card * card)
 104 {
 105         OUTB_P(0xff, ICN_MAPRAM);
 106 }
 107
 108 /*
 109  * Map a cards channel0 (Bank0/Bank8) or channel1 (Bank4/Bank12)
 110  *
 111  * must called with holding the devlock
 112  */
 113 static inline void
 114 icn_map_channel(icn_card * card, int channel)
 115 {
 116 #ifdef MAP_DEBUG
 117         printk(KERN_DEBUG "icn_map_channel %d %d\n", dev.channel, channel);
 118 #endif
 119         if ((channel == dev.channel) && (card == dev.mcard))
 120                 return;
 121         if (dev.mcard)
 122                 icn_disable_ram(dev.mcard);
 123         icn_shiftout(ICN_BANK, chan2bank[channel], 3, 4);       /* Select Bank          */
 124         icn_enable_ram(card);
 125         dev.mcard = card;
 126         dev.channel = channel;
 127 #ifdef MAP_DEBUG
 128         printk(KERN_DEBUG "icn_map_channel done\n");
 129 #endif
 130 }
 131
 132 /*
 133  * Lock a cards channel.
 134  * Return 0 if requested card/channel is unmapped (failure).
 135  * Return 1 on success.
 136  *
 137  * must called with holding the devlock
 138  */
 139 static inline int
 140 icn_lock_channel(icn_card * card, int channel)
 141 {
 142         register int retval;
 143
 144 #ifdef MAP_DEBUG
 145         printk(KERN_DEBUG "icn_lock_channel %d\n", channel);
 146 #endif
 147         if ((dev.channel == channel) && (card == dev.mcard)) {
 148                 dev.chanlock++;
 149                 retval = 1;
 150 #ifdef MAP_DEBUG
 151                 printk(KERN_DEBUG "icn_lock_channel %d OK\n", channel);
 152 #endif
 153         } else {
 154                 retval = 0;
 155 #ifdef MAP_DEBUG
 156                 printk(KERN_DEBUG "icn_lock_channel %d FAILED, dc=%d\n", channel, dev.channel);
 157 #endif
 158         }
 159         return retval;
 160 }
 161
 162 /*
 163  * Release current card/channel lock
 164  *
 165  * must called with holding the devlock
 166  */
 167 static inline void
 168 __icn_release_channel(void)
 169 {
 170 #ifdef MAP_DEBUG
 171         printk(KERN_DEBUG "icn_release_channel l=%d\n", dev.chanlock);
 172 #endif
 173         if (dev.chanlock > 0)
 174                 dev.chanlock--;
 175 }
 176
 177 /*
 178  * Release current card/channel lock
 179  */
 180 static inline void
 181 icn_release_channel(void)
 182 {
 183         ulong flags;
 184
 185         spin_lock_irqsave(&dev.devlock, flags);
 186         __icn_release_channel();
 187         spin_unlock_irqrestore(&dev.devlock, flags);
 188 }
 189
 190 /*
 191  * Try to map and lock a cards channel.
 192  * Return 1 on success, 0 on failure.
 193  */
 194 static inline int
 195 icn_trymaplock_channel(icn_card * card, int channel)
 196 {
 197         ulong flags;
 198
 199 #ifdef MAP_DEBUG
 200         printk(KERN_DEBUG "trymaplock c=%d dc=%d l=%d\n", channel, dev.channel,
 201                dev.chanlock);
 202 #endif
 203         spin_lock_irqsave(&dev.devlock, flags);
 204         if ((!dev.chanlock) ||
 205             ((dev.channel == channel) && (dev.mcard == card))) {
 206                 dev.chanlock++;
 207                 icn_map_channel(card, channel);
 208                 spin_unlock_irqrestore(&dev.devlock, flags);
 209 #ifdef MAP_DEBUG
 210                 printk(KERN_DEBUG "trymaplock %d OK\n", channel);
 211 #endif
 212                 return 1;
 213         }
 214         spin_unlock_irqrestore(&dev.devlock, flags);
 215 #ifdef MAP_DEBUG
 216         printk(KERN_DEBUG "trymaplock %d FAILED\n", channel);
 217 #endif
 218         return 0;
 219 }
 220
 221 /*
 222  * Release current card/channel lock,
 223  * then map same or other channel without locking.
 224  */
 225 static inline void
 226 icn_maprelease_channel(icn_card * card, int channel)
 227 {
 228         ulong flags;
 229
 230 #ifdef MAP_DEBUG
 231         printk(KERN_DEBUG "map_release c=%d l=%d\n", channel, dev.chanlock);
 232 #endif
 233         spin_lock_irqsave(&dev.devlock, flags);
 234         if (dev.chanlock > 0)
 235                 dev.chanlock--;
 236         if (!dev.chanlock)
 237                 icn_map_channel(card, channel);
 238         spin_unlock_irqrestore(&dev.devlock, flags);
 239 }
 240
 241 /* Get Data from the B-Channel, assemble fragmented packets and put them
 242  * into receive-queue. Wake up any B-Channel-reading processes.
 243  * This routine is called via timer-callback from icn_pollbchan().
 244  */
 245
 246 static void
 247 icn_pollbchan_receive(int channel, icn_card * card)
 248 {
 249         int mch = channel + ((card->secondhalf) ? 2 : 0);
 250         int eflag;
 251         int cnt;
 252         struct sk_buff *skb;
 253
 254         if (icn_trymaplock_channel(card, mch)) {
 255                 while (rbavl) {
 256                         cnt = readb(&rbuf_l);
 257                         if ((card->rcvidx[channel] + cnt) > 4000) {
 258                                 printk(KERN_WARNING
 259                                        "icn: (%s) bogus packet on ch%d, dropping.\n",
 260                                        CID,
 261                                        channel + 1);
 262                                 card->rcvidx[channel] = 0;
 263                                 eflag = 0;
 264                         } else {
 265                                 memcpy_fromio(&card->rcvbuf[channel][card->rcvidx[channel]],
 266                                               &rbuf_d, cnt);
 267                                 card->rcvidx[channel] += cnt;
 268                                 eflag = readb(&rbuf_f);
 269                         }
 270                         rbnext;
 271                         icn_maprelease_channel(card, mch & 2);
 272                         if (!eflag) {
 273                                 if ((cnt = card->rcvidx[channel])) {
 274                                         if (!(skb = dev_alloc_skb(cnt))) {
 275                                                 printk(KERN_WARNING "icn: receive out of memory\n");
 276                                                 break;
 277                                         }
 278                                         memcpy(skb_put(skb, cnt), card->rcvbuf[channel], cnt);
 279                                         card->rcvidx[channel] = 0;
 280                                         card->interface.rcvcallb_skb(card->myid, channel, skb);
 281                                 }
 282                         }
 283                         if (!icn_trymaplock_channel(card, mch))
 284                                 break;
 285                 }
 286                 icn_maprelease_channel(card, mch & 2);
 287         }
 288 }
 289
 290 /* Send data-packet to B-Channel, split it up into fragments of
 291  * ICN_FRAGSIZE length. If last fragment is sent out, signal
 292  * success to upper layers via statcallb with ISDN_STAT_BSENT argument.
 293  * This routine is called via timer-callback from icn_pollbchan() or
 294  * directly from icn_sendbuf().
 295  */
 296
 297 static void
 298 icn_pollbchan_send(int channel, icn_card * card)
 299 {
 300         int mch = channel + ((card->secondhalf) ? 2 : 0);
 301         int cnt;
 302         unsigned long flags;
 303         struct sk_buff *skb;
 304         isdn_ctrl cmd;
 305
 306         if (!(card->sndcount[channel] || card->xskb[channel] ||
 307               !skb_queue_empty(&card->spqueue[channel])))
 308                 return;
 309         if (icn_trymaplock_channel(card, mch)) {
 310                 while (sbfree &&
 311                        (card->sndcount[channel] ||
 312                         !skb_queue_empty(&card->spqueue[channel]) ||
 313                         card->xskb[channel])) {
 314                         spin_lock_irqsave(&card->lock, flags);
 315                         if (card->xmit_lock[channel]) {
 316                                 spin_unlock_irqrestore(&card->lock, flags);
 317                                 break;
 318                         }
 319                         card->xmit_lock[channel]++;
 320                         spin_unlock_irqrestore(&card->lock, flags);
 321                         skb = card->xskb[channel];
 322                         if (!skb) {
 323                                 skb = skb_dequeue(&card->spqueue[channel]);
 324                                 if (skb) {
 325                                         /* Pop ACK-flag off skb.
 326                                          * Store length to xlen.
 327                                          */
 328                                         if (*(skb_pull(skb,1)))
 329                                                 card->xlen[channel] = skb->len;
 330                                         else
 331                                                 card->xlen[channel] = 0;
 332                                 }
 333                         }
 334                         if (!skb)
 335                                 break;
 336                         if (skb->len > ICN_FRAGSIZE) {
 337                                 writeb(0xff, &sbuf_f);
 338                                 cnt = ICN_FRAGSIZE;
 339                         } else {
 340                                 writeb(0x0, &sbuf_f);
 341                                 cnt = skb->len;
 342                         }
 343                         writeb(cnt, &sbuf_l);
 344                         memcpy_toio(&sbuf_d, skb->data, cnt);
 345                         skb_pull(skb, cnt);
 346                         sbnext; /* switch to next buffer        */
 347                         icn_maprelease_channel(card, mch & 2);
 348                         spin_lock_irqsave(&card->lock, flags);
 349                         card->sndcount[channel] -= cnt;
 350                         if (!skb->len) {
 351                                 if (card->xskb[channel])
 352                                         card->xskb[channel] = NULL;
 353                                 card->xmit_lock[channel] = 0;
 354                                 spin_unlock_irqrestore(&card->lock, flags);
 355                                 dev_kfree_skb(skb);
 356                                 if (card->xlen[channel]) {
 357                                         cmd.command = ISDN_STAT_BSENT;
 358                                         cmd.driver = card->myid;
 359                                         cmd.arg = channel;
 360                                         cmd.parm.length = card->xlen[channel];
 361                                         card->interface.statcallb(&cmd);
 362                                 }
 363                         } else {
 364                                 card->xskb[channel] = skb;
 365                                 card->xmit_lock[channel] = 0;
 366                                 spin_unlock_irqrestore(&card->lock, flags);
 367                         }
 368                         if (!icn_trymaplock_channel(card, mch))
 369                                 break;
 370                 }
 371                 icn_maprelease_channel(card, mch & 2);
 372         }
 373 }
 374
 375 /* Send/Receive Data to/from the B-Channel.
 376  * This routine is called via timer-callback.
 377  * It schedules itself while any B-Channel is open.
 378  */
 379
 380 static void
 381 icn_pollbchan(unsigned long data)
 382 {
 383         icn_card *card = (icn_card *) data;
 384         unsigned long flags;
 385
 386         if (card->flags & ICN_FLAGS_B1ACTIVE) {
 387                 icn_pollbchan_receive(0, card);
 388                 icn_pollbchan_send(0, card);
 389         }
 390         if (card->flags & ICN_FLAGS_B2ACTIVE) {
 391                 icn_pollbchan_receive(1, card);
 392                 icn_pollbchan_send(1, card);
 393         }
 394         if (card->flags & (ICN_FLAGS_B1ACTIVE | ICN_FLAGS_B2ACTIVE)) {
 395                 /* schedule b-channel polling again */
 396                 spin_lock_irqsave(&card->lock, flags);
 397                 mod_timer(&card->rb_timer, jiffies+ICN_TIMER_BCREAD);
 398                 card->flags |= ICN_FLAGS_RBTIMER;
 399                 spin_unlock_irqrestore(&card->lock, flags);
 400         } else
 401                 card->flags &= ~ICN_FLAGS_RBTIMER;
 402 }
 403
 404 typedef struct icn_stat {
 405         char *statstr;
 406         int command;
 407         int action;
 408 } icn_stat;
 409 /* *INDENT-OFF* */
 410 static icn_stat icn_stat_table[] =
 411 {
 412         {"BCON_",          ISDN_STAT_BCONN, 1}, /* B-Channel connected        */
 413         {"BDIS_",          ISDN_STAT_BHUP,  2}, /* B-Channel disconnected     */
 414         /*
 415         ** add d-channel connect and disconnect support to link-level
 416         */
 417         {"DCON_",          ISDN_STAT_DCONN, 10},        /* D-Channel connected        */
 418         {"DDIS_",          ISDN_STAT_DHUP,  11},        /* D-Channel disconnected     */
 419         {"DCAL_I",         ISDN_STAT_ICALL, 3}, /* Incoming call dialup-line  */
 420         {"DSCA_I",         ISDN_STAT_ICALL, 3}, /* Incoming call 1TR6-SPV     */
 421         {"FCALL",          ISDN_STAT_ICALL, 4}, /* Leased line connection up  */
 422         {"CIF",            ISDN_STAT_CINF,  5}, /* Charge-info, 1TR6-type     */
 423         {"AOC",            ISDN_STAT_CINF,  6}, /* Charge-info, DSS1-type     */
 424         {"CAU",            ISDN_STAT_CAUSE, 7}, /* Cause code                 */
 425         {"TEI OK",         ISDN_STAT_RUN,   0}, /* Card connected to wallplug */
 426         {"E_L1: ACT FAIL", ISDN_STAT_BHUP,  8}, /* Layer-1 activation failed  */
 427         {"E_L2: DATA LIN", ISDN_STAT_BHUP,  8}, /* Layer-2 data link lost     */
 428         {"E_L1: ACTIVATION FAILED",
 429                                            ISDN_STAT_BHUP,  8}, /* Layer-1 activation failed  */
 430         {NULL, 0, -1}
 431 };
 432 /* *INDENT-ON* */
 433
 434
 435 /*
 436  * Check Statusqueue-Pointer from isdn-cards.
 437  * If there are new status-replies from the interface, check
 438  * them against B-Channel-connects/disconnects and set flags accordingly.
 439  * Wake-Up any processes, who are reading the status-device.
 440  * If there are B-Channels open, initiate a timer-callback to
 441  * icn_pollbchan().
 442  * This routine is called periodically via timer.
 443  */
 444
 445 static void
 446 icn_parse_status(u_char * status, int channel, icn_card * card)
 447 {
 448         icn_stat *s = icn_stat_table;
 449         int action = -1;
 450         unsigned long flags;
 451         isdn_ctrl cmd;
 452
 453         while (s->statstr) {
 454                 if (!strncmp(status, s->statstr, strlen(s->statstr))) {
 455                         cmd.command = s->command;
 456                         action = s->action;
 457                         break;
 458                 }
 459                 s++;
 460         }
 461         if (action == -1)
 462                 return;
 463         cmd.driver = card->myid;
 464         cmd.arg = channel;
 465         switch (action) {
 466                 case 11:
 467                         spin_lock_irqsave(&card->lock, flags);
 468                         icn_free_queue(card,channel);
 469                         card->rcvidx[channel] = 0;
 470
 471                         if (card->flags &
 472                             ((channel)?ICN_FLAGS_B2ACTIVE:ICN_FLAGS_B1ACTIVE)) {
 473
 474                                 isdn_ctrl ncmd;
 475
 476                                 card->flags &= ~((channel)?
 477                                                  ICN_FLAGS_B2ACTIVE:ICN_FLAGS_B1ACTIVE);
 478
 479                                 memset(&ncmd, 0, sizeof(ncmd));
 480
 481                                 ncmd.driver = card->myid;
 482                                 ncmd.arg = channel;
 483                                 ncmd.command = ISDN_STAT_BHUP;
 484                                 spin_unlock_irqrestore(&card->lock, flags);
 485                                 card->interface.statcallb(&cmd);
 486                         } else
 487                                 spin_unlock_irqrestore(&card->lock, flags);
 488                         break;
 489                 case 1:
 490                         spin_lock_irqsave(&card->lock, flags);
 491                         icn_free_queue(card,channel);
 492                         card->flags |= (channel) ?
 493                             ICN_FLAGS_B2ACTIVE : ICN_FLAGS_B1ACTIVE;
 494                         spin_unlock_irqrestore(&card->lock, flags);
 495                         break;
 496                 case 2:
 497                         spin_lock_irqsave(&card->lock, flags);
 498                         card->flags &= ~((channel) ?
 499                                 ICN_FLAGS_B2ACTIVE : ICN_FLAGS_B1ACTIVE);
 500                         icn_free_queue(card, channel);
 501                         card->rcvidx[channel] = 0;
 502                         spin_unlock_irqrestore(&card->lock, flags);
 503                         break;
 504                 case 3:
 505                         {
 506                                 char *t = status + 6;
 507                                 char *s = strchr(t, ',');
 508
 509                                 *s++ = '\0';
 510                                 strlcpy(cmd.parm.setup.phone, t,
 511                                         sizeof(cmd.parm.setup.phone));
 512                                 s = strchr(t = s, ',');
 513                                 *s++ = '\0';
 514                                 if (!strlen(t))
 515                                         cmd.parm.setup.si1 = 0;
 516                                 else
 517                                         cmd.parm.setup.si1 =
 518                                             simple_strtoul(t, NULL, 10);
 519                                 s = strchr(t = s, ',');
 520                                 *s++ = '\0';
 521                                 if (!strlen(t))
 522                                         cmd.parm.setup.si2 = 0;
 523                                 else
 524                                         cmd.parm.setup.si2 =
 525                                             simple_strtoul(t, NULL, 10);
 526                                 strlcpy(cmd.parm.setup.eazmsn, s,
 527                                         sizeof(cmd.parm.setup.eazmsn));
 528                         }
 529                         cmd.parm.setup.plan = 0;
 530                         cmd.parm.setup.screen = 0;
 531                         break;
 532                 case 4:
 533                         sprintf(cmd.parm.setup.phone, "LEASED%d", card->myid);
 534                         sprintf(cmd.parm.setup.eazmsn, "%d", channel + 1);
 535                         cmd.parm.setup.si1 = 7;
 536                         cmd.parm.setup.si2 = 0;
 537                         cmd.parm.setup.plan = 0;
 538                         cmd.parm.setup.screen = 0;
 539                         break;
 540                 case 5:
 541                         strlcpy(cmd.parm.num, status + 3, sizeof(cmd.parm.num));
 542                         break;
 543                 case 6:
 544                         snprintf(cmd.parm.num, sizeof(cmd.parm.num), "%d",
 545                              (int) simple_strtoul(status + 7, NULL, 16));
 546                         break;
 547                 case 7:
 548                         status += 3;
 549                         if (strlen(status) == 4)
 550                                 snprintf(cmd.parm.num, sizeof(cmd.parm.num), "%s%c%c",
 551                                      status + 2, *status, *(status + 1));
 552                         else
 553                                 strlcpy(cmd.parm.num, status + 1, sizeof(cmd.parm.num));
 554                         break;
 555                 case 8:
 556                         spin_lock_irqsave(&card->lock, flags);
 557                         card->flags &= ~ICN_FLAGS_B1ACTIVE;
 558                         icn_free_queue(card, 0);
 559                         card->rcvidx[0] = 0;
 560                         spin_unlock_irqrestore(&card->lock, flags);
 561                         cmd.arg = 0;
 562                         cmd.driver = card->myid;
 563                         card->interface.statcallb(&cmd);
 564                         cmd.command = ISDN_STAT_DHUP;
 565                         cmd.arg = 0;
 566                         cmd.driver = card->myid;
 567                         card->interface.statcallb(&cmd);
 568                         cmd.command = ISDN_STAT_BHUP;
 569                         spin_lock_irqsave(&card->lock, flags);
 570                         card->flags &= ~ICN_FLAGS_B2ACTIVE;
 571                         icn_free_queue(card, 1);
 572                         card->rcvidx[1] = 0;
 573                         spin_unlock_irqrestore(&card->lock, flags);
 574                         cmd.arg = 1;
 575                         cmd.driver = card->myid;
 576                         card->interface.statcallb(&cmd);
 577                         cmd.command = ISDN_STAT_DHUP;
 578                         cmd.arg = 1;
 579                         cmd.driver = card->myid;
 580                         break;
 581         }
 582         card->interface.statcallb(&cmd);
 583         return;
 584 }
 585
 586 static void
 587 icn_putmsg(icn_card * card, unsigned char c)
 588 {
 589         ulong flags;
 590
 591         spin_lock_irqsave(&card->lock, flags);
 592         *card->msg_buf_write++ = (c == 0xff) ? '\n' : c;
 593         if (card->msg_buf_write == card->msg_buf_read) {
 594                 if (++card->msg_buf_read > card->msg_buf_end)
 595                         card->msg_buf_read = card->msg_buf;
 596         }
 597         if (card->msg_buf_write > card->msg_buf_end)
 598                 card->msg_buf_write = card->msg_buf;
 599         spin_unlock_irqrestore(&card->lock, flags);
 600 }
 601
 602 static void
 603 icn_polldchan(unsigned long data)
 604 {
 605         icn_card *card = (icn_card *) data;
 606         int mch = card->secondhalf ? 2 : 0;
 607         int avail = 0;
 608         int left;
 609         u_char c;
 610         int ch;
 611         unsigned long flags;
 612         int i;
 613         u_char *p;
 614         isdn_ctrl cmd;
 615
 616         if (icn_trymaplock_channel(card, mch)) {
 617                 avail = msg_avail;
 618                 for (left = avail, i = readb(&msg_o); left > 0; i++, left--) {
 619                         c = readb(&dev.shmem->comm_buffers.iopc_buf[i & 0xff]);
 620                         icn_putmsg(card, c);
 621                         if (c == 0xff) {
 622                                 card->imsg[card->iptr] = 0;
 623                                 card->iptr = 0;
 624                                 if (card->imsg[0] == '0' && card->imsg[1] >= '0' &&
 625                                     card->imsg[1] <= '2' && card->imsg[2] == ';') {
 626                                         ch = (card->imsg[1] - '0') - 1;
 627                                         p = &card->imsg[3];
 628                                         icn_parse_status(p, ch, card);
 629                                 } else {
 630                                         p = card->imsg;
 631                                         if (!strncmp(p, "DRV1.", 5)) {
 632                                                 u_char vstr[10];
 633                                                 u_char *q = vstr;
 634
 635                                                 printk(KERN_INFO "icn: (%s) %s\n", CID, p);
 636                                                 if (!strncmp(p + 7, "TC", 2)) {
 637                                                         card->ptype = ISDN_PTYPE_1TR6;
 638                                                         card->interface.features |= ISDN_FEATURE_P_1TR6;
 639                                                         printk(KERN_INFO
 640                                                                "icn: (%s) 1TR6-Protocol loaded and running\n", CID);
 641                                                 }
 642                                                 if (!strncmp(p + 7, "EC", 2)) {
 643                                                         card->ptype = ISDN_PTYPE_EURO;
 644                                                         card->interface.features |= ISDN_FEATURE_P_EURO;
 645                                                         printk(KERN_INFO
 646                                                                "icn: (%s) Euro-Protocol loaded and running\n", CID);
 647                                                 }
 648                                                 p = strstr(card->imsg, "BRV") + 3;
 649                                                 while (*p) {
 650                                                         if (*p >= '0' && *p <= '9')
 651                                                                 *q++ = *p;
 652                                                         p++;
 653                                                 }
 654                                                 *q = '\0';
 655                                                 strcat(vstr, "000");
 656                                                 vstr[3] = '\0';
 657                                                 card->fw_rev = (int) simple_strtoul(vstr, NULL, 10);
 658                                                 continue;
 659
 660                                         }
 661                                 }
 662                         } else {
 663                                 card->imsg[card->iptr] = c;
 664                                 if (card->iptr < 59)
 665                                         card->iptr++;
 666                         }
 667                 }
 668                 writeb((readb(&msg_o) + avail) & 0xff, &msg_o);
 669                 icn_release_channel();
 670         }
 671         if (avail) {
 672                 cmd.command = ISDN_STAT_STAVAIL;
 673                 cmd.driver = card->myid;
 674                 cmd.arg = avail;
 675                 card->interface.statcallb(&cmd);
 676         }
 677         spin_lock_irqsave(&card->lock, flags);
 678         if (card->flags & (ICN_FLAGS_B1ACTIVE | ICN_FLAGS_B2ACTIVE))
 679                 if (!(card->flags & ICN_FLAGS_RBTIMER)) {
 680                         /* schedule b-channel polling */
 681                         card->flags |= ICN_FLAGS_RBTIMER;
 682                         del_timer(&card->rb_timer);
 683                         card->rb_timer.function = icn_pollbchan;
 684                         card->rb_timer.data = (unsigned long) card;
 685                         card->rb_timer.expires = jiffies + ICN_TIMER_BCREAD;
 686                         add_timer(&card->rb_timer);
 687                 }
 688         /* schedule again */
 689         mod_timer(&card->st_timer, jiffies+ICN_TIMER_DCREAD);
 690         spin_unlock_irqrestore(&card->lock, flags);
 691 }
 692
 693 /* Append a packet to the transmit buffer-queue.
 694  * Parameters:
 695  *   channel = Number of B-channel
 696  *   skb     = pointer to sk_buff
 697  *   card    = pointer to card-struct
 698  * Return:
 699  *   Number of bytes transferred, -E??? on error
 700  */
 701
 702 static int
 703 icn_sendbuf(int channel, int ack, struct sk_buff *skb, icn_card * card)
 704 {
 705         int len = skb->len;
 706         unsigned long flags;
 707         struct sk_buff *nskb;
 708
 709         if (len > 4000) {
 710                 printk(KERN_WARNING
 711                        "icn: Send packet too large\n");
 712                 return -EINVAL;
 713         }
 714         if (len) {
 715                 if (!(card->flags & (channel) ? ICN_FLAGS_B2ACTIVE : ICN_FLAGS_B1ACTIVE))
 716                         return 0;
 717                 if (card->sndcount[channel] > ICN_MAX_SQUEUE)
 718                         return 0;
 719                 #warning TODO test headroom or use skb->nb to flag ACK
 720                 nskb = skb_clone(skb, GFP_ATOMIC);
 721                 if (nskb) {
 722                         /* Push ACK flag as one
 723                          * byte in front of data.
 724                          */
 725                         *(skb_push(nskb, 1)) = ack?1:0;
 726                         skb_queue_tail(&card->spqueue[channel], nskb);
 727                         dev_kfree_skb(skb);
 728                 } else
 729                         len = 0;
 730                 spin_lock_irqsave(&card->lock, flags);
 731                 card->sndcount[channel] += len;
 732                 spin_unlock_irqrestore(&card->lock, flags);
 733         }
 734         return len;
 735 }
 736
 737 /*
 738  * Check card's status after starting the bootstrap loader.
 739  * On entry, the card's shared memory has already to be mapped.
 740  * Return:
 741  *   0 on success (Boot loader ready)
 742  *   -EIO on failure (timeout)
 743  */
 744 static int
 745 icn_check_loader(int cardnumber)
 746 {
 747         int timer = 0;
 748
 749         while (1) {
 750 #ifdef BOOT_DEBUG
 751                 printk(KERN_DEBUG "Loader %d ?\n", cardnumber);
 752 #endif
 753                 if (readb(&dev.shmem->data_control.scns) ||
 754                     readb(&dev.shmem->data_control.scnr)) {
 755                         if (timer++ > 5) {
 756                                 printk(KERN_WARNING
 757                                        "icn: Boot-Loader %d timed out.\n",
 758                                        cardnumber);
 759                                 icn_release_channel();
 760                                 return -EIO;
 761                         }
 762 #ifdef BOOT_DEBUG
 763                         printk(KERN_DEBUG "Loader %d TO?\n", cardnumber);
 764 #endif
 765                         msleep_interruptible(ICN_BOOT_TIMEOUT1);
 766                 } else {
 767 #ifdef BOOT_DEBUG
 768                         printk(KERN_DEBUG "Loader %d OK\n", cardnumber);
 769 #endif
 770                         icn_release_channel();
 771                         return 0;
 772                 }
 773         }
 774 }
 775
 776 /* Load the boot-code into the interface-card's memory and start it.
 777  * Always called from user-process.
 778  *
 779  * Parameters:
 780  *            buffer = pointer to packet
 781  * Return:
 782  *        0 if successfully loaded
 783  */
 784
 785 #ifdef BOOT_DEBUG
 786 #define SLEEP(sec) { \
 787 int slsec = sec; \
 788   printk(KERN_DEBUG "SLEEP(%d)\n",slsec); \
 789   while (slsec) { \
 790     msleep_interruptible(1000); \
 791     slsec--; \
 792   } \
 793 }
 794 #else
 795 #define SLEEP(sec)
 796 #endif
 797
 798 static int
 799 icn_loadboot(u_char __user * buffer, icn_card * card)
 800 {
 801         int ret;
 802         u_char *codebuf;
 803         unsigned long flags;
 804
 805 #ifdef BOOT_DEBUG
 806         printk(KERN_DEBUG "icn_loadboot called, buffaddr=%08lx\n", (ulong) buffer);
 807 #endif
 808         if (!(codebuf = kmalloc(ICN_CODE_STAGE1, GFP_KERNEL))) {
 809                 printk(KERN_WARNING "icn: Could not allocate code buffer\n");
 810                 ret = -ENOMEM;
 811                 goto out;
 812         }
 813         if (copy_from_user(codebuf, buffer, ICN_CODE_STAGE1)) {
 814                 ret = -EFAULT;
 815                 goto out_kfree;
 816         }
 817         if (!card->rvalid) {
 818                 if (!request_region(card->port, ICN_PORTLEN, card->regname)) {
 819                         printk(KERN_WARNING
 820                                "icn: (%s) ports 0x%03x-0x%03x in use.\n",
 821                                CID,
 822                                card->port,
 823                                card->port + ICN_PORTLEN);
 824                         ret = -EBUSY;
 825                         goto out_kfree;
 826                 }
 827                 card->rvalid = 1;
 828                 if (card->doubleS0)
 829                         card->other->rvalid = 1;
 830         }
 831         if (!dev.mvalid) {
 832                 if (!request_mem_region(dev.memaddr, 0x4000, "icn-isdn (all cards)")) {
 833                         printk(KERN_WARNING
 834                                "icn: memory at 0x%08lx in use.\n", dev.memaddr);
 835                         ret = -EBUSY;
 836                         goto out_kfree;
 837                 }
 838                 dev.shmem = ioremap(dev.memaddr, 0x4000);
 839                 dev.mvalid = 1;
 840         }
 841         OUTB_P(0, ICN_RUN);     /* Reset Controller */
 842         OUTB_P(0, ICN_MAPRAM);  /* Disable RAM      */
 843         icn_shiftout(ICN_CFG, 0x0f, 3, 4);      /* Windowsize= 16k  */
 844         icn_shiftout(ICN_CFG, dev.memaddr, 23, 10);     /* Set RAM-Addr.    */
 845 #ifdef BOOT_DEBUG
 846         printk(KERN_DEBUG "shmem=%08lx\n", dev.memaddr);
 847 #endif
 848         SLEEP(1);
 849 #ifdef BOOT_DEBUG
 850         printk(KERN_DEBUG "Map Bank 0\n");
 851 #endif
 852         spin_lock_irqsave(&dev.devlock, flags);
 853         icn_map_channel(card, 0);       /* Select Bank 0    */
 854         icn_lock_channel(card, 0);      /* Lock Bank 0      */
 855         spin_unlock_irqrestore(&dev.devlock, flags);
 856         SLEEP(1);
 857         memcpy_toio(dev.shmem, codebuf, ICN_CODE_STAGE1);       /* Copy code        */
 858 #ifdef BOOT_DEBUG
 859         printk(KERN_DEBUG "Bootloader transferred\n");
 860 #endif
 861         if (card->doubleS0) {
 862                 SLEEP(1);
 863 #ifdef BOOT_DEBUG
 864                 printk(KERN_DEBUG "Map Bank 8\n");
 865 #endif
 866                 spin_lock_irqsave(&dev.devlock, flags);
 867                 __icn_release_channel();
 868                 icn_map_channel(card, 2);       /* Select Bank 8   */
 869                 icn_lock_channel(card, 2);      /* Lock Bank 8     */
 870                 spin_unlock_irqrestore(&dev.devlock, flags);
 871                 SLEEP(1);
 872                 memcpy_toio(dev.shmem, codebuf, ICN_CODE_STAGE1);       /* Copy code        */
 873 #ifdef BOOT_DEBUG
 874                 printk(KERN_DEBUG "Bootloader transferred\n");
 875 #endif
 876         }
 877         SLEEP(1);
 878         OUTB_P(0xff, ICN_RUN);  /* Start Boot-Code */
 879         if ((ret = icn_check_loader(card->doubleS0 ? 2 : 1))) {
 880                 goto out_kfree;
 881         }
 882         if (!card->doubleS0) {
 883                 ret = 0;
 884                 goto out_kfree;
 885         }
 886         /* reached only, if we have a Double-S0-Card */
 887 #ifdef BOOT_DEBUG
 888         printk(KERN_DEBUG "Map Bank 0\n");
 889 #endif
 890         spin_lock_irqsave(&dev.devlock, flags);
 891         icn_map_channel(card, 0);       /* Select Bank 0   */
 892         icn_lock_channel(card, 0);      /* Lock Bank 0     */
 893         spin_unlock_irqrestore(&dev.devlock, flags);
 894         SLEEP(1);
 895         ret = (icn_check_loader(1));
 896
 897  out_kfree:
 898         kfree(codebuf);
 899  out:
 900         return ret;
 901 }
 902
 903 static int
 904 icn_loadproto(u_char __user * buffer, icn_card * card)
 905 {
 906         register u_char __user *p = buffer;
 907         u_char codebuf[256];
 908         uint left = ICN_CODE_STAGE2;
 909         uint cnt;
 910         int timer;
 911         unsigned long flags;
 912
 913 #ifdef BOOT_DEBUG
 914         printk(KERN_DEBUG "icn_loadproto called\n");
 915 #endif
 916         if (!access_ok(VERIFY_READ, buffer, ICN_CODE_STAGE2))
 917                 return -EFAULT;
 918         timer = 0;
 919         spin_lock_irqsave(&dev.devlock, flags);
 920         if (card->secondhalf) {
 921                 icn_map_channel(card, 2);
 922                 icn_lock_channel(card, 2);
 923         } else {
 924                 icn_map_channel(card, 0);
 925                 icn_lock_channel(card, 0);
 926         }
 927         spin_unlock_irqrestore(&dev.devlock, flags);
 928         while (left) {
 929                 if (sbfree) {   /* If there is a free buffer...  */
 930                         cnt = left;
 931                         if (cnt > 256)
 932                                 cnt = 256;
 933                         if (copy_from_user(codebuf, p, cnt)) {
 934                                 icn_maprelease_channel(card, 0);
 935                                 return -EFAULT;
 936                         }
 937                         memcpy_toio(&sbuf_l, codebuf, cnt);     /* copy data                     */
 938                         sbnext; /* switch to next buffer         */
 939                         p += cnt;
 940                         left -= cnt;
 941                         timer = 0;
 942                 } else {
 943 #ifdef BOOT_DEBUG
 944                         printk(KERN_DEBUG "boot 2 !sbfree\n");
 945 #endif
 946                         if (timer++ > 5) {
 947                                 icn_maprelease_channel(card, 0);
 948                                 return -EIO;
 949                         }
 950                         schedule_timeout_interruptible(10);
 951                 }
 952         }
 953         writeb(0x20, &sbuf_n);
 954         timer = 0;
 955         while (1) {
 956                 if (readb(&cmd_o) || readb(&cmd_i)) {
 957 #ifdef BOOT_DEBUG
 958                         printk(KERN_DEBUG "Proto?\n");
 959 #endif
 960                         if (timer++ > 5) {
 961                                 printk(KERN_WARNING
 962                                        "icn: (%s) Protocol timed out.\n",
 963                                        CID);
 964 #ifdef BOOT_DEBUG
 965                                 printk(KERN_DEBUG "Proto TO!\n");
 966 #endif
 967                                 icn_maprelease_channel(card, 0);
 968                                 return -EIO;
 969                         }
 970 #ifdef BOOT_DEBUG
 971                         printk(KERN_DEBUG "Proto TO?\n");
 972 #endif
 973                         msleep_interruptible(ICN_BOOT_TIMEOUT1);
 974                 } else {
 975                         if ((card->secondhalf) || (!card->doubleS0)) {
 976 #ifdef BOOT_DEBUG
 977                                 printk(KERN_DEBUG "Proto loaded, install poll-timer %d\n",
 978                                        card->secondhalf);
 979 #endif
 980                                 spin_lock_irqsave(&card->lock, flags);
 981                                 init_timer(&card->st_timer);
 982                                 card->st_timer.expires = jiffies + ICN_TIMER_DCREAD;
 983                                 card->st_timer.function = icn_polldchan;
 984                                 card->st_timer.data = (unsigned long) card;
 985                                 add_timer(&card->st_timer);
 986                                 card->flags |= ICN_FLAGS_RUNNING;
 987                                 if (card->doubleS0) {
 988                                         init_timer(&card->other->st_timer);
 989                                         card->other->st_timer.expires = jiffies + ICN_TIMER_DCREAD;
 990                                         card->other->st_timer.function = icn_polldchan;
 991                                         card->other->st_timer.data = (unsigned long) card->other;
 992                                         add_timer(&card->other->st_timer);
 993                                         card->other->flags |= ICN_FLAGS_RUNNING;
 994                                 }
 995                                 spin_unlock_irqrestore(&card->lock, flags);
 996                         }
 997                         icn_maprelease_channel(card, 0);
 998                         return 0;
 999                 }
1000         }
1001 }
1002
1003 /* Read the Status-replies from the Interface */
1004 static int
1005 icn_readstatus(u_char __user *buf, int len, icn_card * card)
1006 {
1007         int count;
1008         u_char __user *p;
1009
1010         for (p = buf, count = 0; count < len; p++, count++) {
1011                 if (card->msg_buf_read == card->msg_buf_write)
1012                         return count;
1013                 if (put_user(*card->msg_buf_read++, p))
1014                         return -EFAULT;
1015                 if (card->msg_buf_read > card->msg_buf_end)
1016                         card->msg_buf_read = card->msg_buf;
1017         }
1018         return count;
1019 }
1020
1021 /* Put command-strings into the command-queue of the Interface */
1022 static int
1023 icn_writecmd(const u_char * buf, int len, int user, icn_card * card)
1024 {
1025         int mch = card->secondhalf ? 2 : 0;
1026         int pp;
1027         int i;
1028         int count;
1029         int xcount;
1030         int ocount;
1031         int loop;
1032         unsigned long flags;
1033         int lastmap_channel;
1034         struct icn_card *lastmap_card;
1035         u_char *p;
1036         isdn_ctrl cmd;
1037         u_char msg[0x100];
1038
1039         ocount = 1;
1040         xcount = loop = 0;
1041         while (len) {
1042                 count = cmd_free;
1043                 if (count > len)
1044                         count = len;
1045                 if (user) {
1046                         if (copy_from_user(msg, buf, count))
1047                                 return -EFAULT;
1048                 } else
1049                         memcpy(msg, buf, count);
1050
1051                 spin_lock_irqsave(&dev.devlock, flags);
1052                 lastmap_card = dev.mcard;
1053                 lastmap_channel = dev.channel;
1054                 icn_map_channel(card, mch);
1055
1056                 icn_putmsg(card, '>');
1057                 for (p = msg, pp = readb(&cmd_i), i = count; i > 0; i--, p++, pp
1058                      ++) {
1059                         writeb((*p == '\n') ? 0xff : *p,
1060                            &dev.shmem->comm_buffers.pcio_buf[pp & 0xff]);
1061                         len--;
1062                         xcount++;
1063                         icn_putmsg(card, *p);
1064                         if ((*p == '\n') && (i > 1)) {
1065                                 icn_putmsg(card, '>');
1066                                 ocount++;
1067                         }
1068                         ocount++;
1069                 }
1070                 writeb((readb(&cmd_i) + count) & 0xff, &cmd_i);
1071                 if (lastmap_card)
1072                         icn_map_channel(lastmap_card, lastmap_channel);
1073                 spin_unlock_irqrestore(&dev.devlock, flags);
1074                 if (len) {
1075                         mdelay(1);
1076                         if (loop++ > 20)
1077                                 break;
1078                 } else
1079                         break;
1080         }
1081         if (len && (!user))
1082                 printk(KERN_WARNING "icn: writemsg incomplete!\n");
1083         cmd.command = ISDN_STAT_STAVAIL;
1084         cmd.driver = card->myid;
1085         cmd.arg = ocount;
1086         card->interface.statcallb(&cmd);
1087         return xcount;
1088 }
1089
1090 /*
1091  * Delete card's pending timers, send STOP to linklevel
1092  */
1093 static void
1094 icn_stopcard(icn_card * card)
1095 {
1096         unsigned long flags;
1097         isdn_ctrl cmd;
1098
1099         spin_lock_irqsave(&card->lock, flags);
1100         if (card->flags & ICN_FLAGS_RUNNING) {
1101                 card->flags &= ~ICN_FLAGS_RUNNING;
1102                 del_timer(&card->st_timer);
1103                 del_timer(&card->rb_timer);
1104                 spin_unlock_irqrestore(&card->lock, flags);
1105                 cmd.command = ISDN_STAT_STOP;
1106                 cmd.driver = card->myid;
1107                 card->interface.statcallb(&cmd);
1108                 if (card->doubleS0)
1109                         icn_stopcard(card->other);
1110         } else
1111                 spin_unlock_irqrestore(&card->lock, flags);
1112 }
1113
1114 static void
1115 icn_stopallcards(void)
1116 {
1117         icn_card *p = cards;
1118
1119         while (p) {
1120                 icn_stopcard(p);
1121                 p = p->next;
1122         }
1123 }
1124
1125 /*
1126  * Unmap all cards, because some of them may be mapped accidetly during
1127  * autoprobing of some network drivers (SMC-driver?)
1128  */
1129 static void
1130 icn_disable_cards(void)
1131 {
1132         icn_card *card = cards;
1133
1134         while (card) {
1135                 if (!request_region(card->port, ICN_PORTLEN, "icn-isdn")) {
1136                         printk(KERN_WARNING
1137                                "icn: (%s) ports 0x%03x-0x%03x in use.\n",
1138                                CID,
1139                                card->port,
1140                                card->port + ICN_PORTLEN);
1141                 } else {
1142                         OUTB_P(0, ICN_RUN);     /* Reset Controller     */
1143                         OUTB_P(0, ICN_MAPRAM);  /* Disable RAM          */
1144                         release_region(card->port, ICN_PORTLEN);
1145                 }
1146                 card = card->next;
1147         }
1148 }
1149
1150 static int
1151 icn_command(isdn_ctrl * c, icn_card * card)
1152 {
1153         ulong a;
1154         ulong flags;
1155         int i;
1156         char cbuf[60];
1157         isdn_ctrl cmd;
1158         icn_cdef cdef;
1159         char __user *arg;
1160
1161         switch (c->command) {
1162                 case ISDN_CMD_IOCTL:
1163                         memcpy(&a, c->parm.num, sizeof(ulong));
1164                         arg = (char __user *)a;
1165                         switch (c->arg) {
1166                                 case ICN_IOCTL_SETMMIO:
1167                                         if (dev.memaddr != (a & 0x0ffc000)) {
1168                                                 if (!request_mem_region(a & 0x0ffc000, 0x4000, "icn-isdn (all cards)")) {
1169                                                         printk(KERN_WARNING
1170                                                                "icn: memory at 0x%08lx in use.\n",
1171                                                                a & 0x0ffc000);
1172                                                         return -EINVAL;
1173                                                 }
1174                                                 release_mem_region(a & 0x0ffc000, 0x4000);
1175                                                 icn_stopallcards();
1176                                                 spin_lock_irqsave(&card->lock, flags);
1177                                                 if (dev.mvalid) {
1178                                                         iounmap(dev.shmem);
1179                                                         release_mem_region(dev.memaddr, 0x4000);
1180                                                 }
1181                                                 dev.mvalid = 0;
1182                                                 dev.memaddr = a & 0x0ffc000;
1183                                                 spin_unlock_irqrestore(&card->lock, flags);
1184                                                 printk(KERN_INFO
1185                                                        "icn: (%s) mmio set to 0x%08lx\n",
1186                                                        CID,
1187                                                        dev.memaddr);
1188                                         }
1189                                         break;
1190                                 case ICN_IOCTL_GETMMIO:
1191                                         return (long) dev.memaddr;
1192                                 case ICN_IOCTL_SETPORT:
1193                                         if (a == 0x300 || a == 0x310 || a == 0x320 || a == 0x330
1194                                             || a == 0x340 || a == 0x350 || a == 0x360 ||
1195                                             a == 0x308 || a == 0x318 || a == 0x328 || a == 0x338
1196                                             || a == 0x348 || a == 0x358 || a == 0x368) {
1197                                                 if (card->port != (unsigned short) a) {
1198                                                         if (!request_region((unsigned short) a, ICN_PORTLEN, "icn-isdn")) {
1199                                                                 printk(KERN_WARNING
1200                                                                        "icn: (%s) ports 0x%03x-0x%03x in use.\n",
1201                                                                        CID, (int) a, (int) a + ICN_PORTLEN);
1202                                                                 return -EINVAL;
1203                                                         }
1204                                                         release_region((unsigned short) a, ICN_PORTLEN);
1205                                                         icn_stopcard(card);
1206                                                         spin_lock_irqsave(&card->lock, flags);
1207                                                         if (card->rvalid)
1208                                                                 release_region(card->port, ICN_PORTLEN);
1209                                                         card->port = (unsigned short) a;
1210                                                         card->rvalid = 0;
1211                                                         if (card->doubleS0) {
1212                                                                 card->other->port = (unsigned short) a;
1213                                                                 card->other->rvalid = 0;
1214                                                         }
1215                                                         spin_unlock_irqrestore(&card->lock, flags);
1216                                                         printk(KERN_INFO
1217                                                                "icn: (%s) port set to 0x%03x\n",
1218                                                         CID, card->port);
1219                                                 }
1220                                         } else
1221                                                 return -EINVAL;
1222                                         break;
1223                                 case ICN_IOCTL_GETPORT:
1224                                         return (int) card->port;
1225                                 case ICN_IOCTL_GETDOUBLE:
1226                                         return (int) card->doubleS0;
1227                                 case ICN_IOCTL_DEBUGVAR:
1228                                         if (copy_to_user(arg,
1229                                                          &card,
1230                                                          sizeof(ulong)))
1231                                                 return -EFAULT;
1232                                         a += sizeof(ulong);
1233                                         {
1234                                                 ulong l = (ulong) & dev;
1235                                                 if (copy_to_user(arg,
1236                                                                  &l,
1237                                                                  sizeof(ulong)))
1238                                                         return -EFAULT;
1239                                         }
1240                                         return 0;
1241                                 case ICN_IOCTL_LOADBOOT:
1242                                         if (dev.firstload) {
1243                                                 icn_disable_cards();
1244                                                 dev.firstload = 0;
1245                                         }
1246                                         icn_stopcard(card);
1247                                         return (icn_loadboot(arg, card));
1248                                 case ICN_IOCTL_LOADPROTO:
1249                                         icn_stopcard(card);
1250                                         if ((i = (icn_loadproto(arg, card))))
1251                                                 return i;
1252                                         if (card->doubleS0)
1253                                                 i = icn_loadproto(arg + ICN_CODE_STAGE2, card->other);
1254                                         return i;
1255                                         break;
1256                                 case ICN_IOCTL_ADDCARD:
1257                                         if (!dev.firstload)
1258                                                 return -EBUSY;
1259                                         if (copy_from_user(&cdef,
1260                                                            arg,
1261                                                            sizeof(cdef)))
1262                                                 return -EFAULT;
1263                                         return (icn_addcard(cdef.port, cdef.id1, cdef.id2));
1264                                         break;
1265                                 case ICN_IOCTL_LEASEDCFG:
1266                                         if (a) {
1267                                                 if (!card->leased) {
1268                                                         card->leased = 1;
1269                                                         while (card->ptype == ISDN_PTYPE_UNKNOWN) {
1270                                                                 msleep_interruptible(ICN_BOOT_TIMEOUT1);
1271                                                         }
1272                                                         msleep_interruptible(ICN_BOOT_TIMEOUT1);
1273                                                         sprintf(cbuf, "00;FV2ON\n01;EAZ%c\n02;EAZ%c\n",
1274                                                                 (a & 1)?'1':'C', (a & 2)?'2':'C');
1275                                                         i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1276                                                         printk(KERN_INFO
1277                                                                "icn: (%s) Leased-line mode enabled\n",
1278                                                                CID);
1279                                                         cmd.command = ISDN_STAT_RUN;
1280                                                         cmd.driver = card->myid;
1281                                                         cmd.arg = 0;
1282                                                         card->interface.statcallb(&cmd);
1283                                                 }
1284                                         } else {
1285                                                 if (card->leased) {
1286                                                         card->leased = 0;
1287                                                         sprintf(cbuf, "00;FV2OFF\n");
1288                                                         i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1289                                                         printk(KERN_INFO
1290                                                                "icn: (%s) Leased-line mode disabled\n",
1291                                                                CID);
1292                                                         cmd.command = ISDN_STAT_RUN;
1293                                                         cmd.driver = card->myid;
1294                                                         cmd.arg = 0;
1295                                                         card->interface.statcallb(&cmd);
1296                                                 }
1297                                         }
1298                                         return 0;
1299                                 default:
1300                                         return -EINVAL;
1301                         }
1302                         break;
1303                 case ISDN_CMD_DIAL:
1304                         if (!card->flags & ICN_FLAGS_RUNNING)
1305                                 return -ENODEV;
1306                         if (card->leased)
1307                                 break;
1308                         if ((c->arg & 255) < ICN_BCH) {
1309                                 char *p;
1310                                 char dial[50];
1311                                 char dcode[4];
1312
1313                                 a = c->arg;
1314                                 p = c->parm.setup.phone;
1315                                 if (*p == 's' || *p == 'S') {
1316                                         /* Dial for SPV */
1317                                         p++;
1318                                         strcpy(dcode, "SCA");
1319                                 } else
1320                                         /* Normal Dial */
1321                                         strcpy(dcode, "CAL");
1322                                 strcpy(dial, p);
1323                                 sprintf(cbuf, "%02d;D%s_R%s,%02d,%02d,%s\n", (int) (a + 1),
1324                                         dcode, dial, c->parm.setup.si1,
1325                                 c->parm.setup.si2, c->parm.setup.eazmsn);
1326                                 i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1327                         }
1328                         break;
1329                 case ISDN_CMD_ACCEPTD:
1330                         if (!card->flags & ICN_FLAGS_RUNNING)
1331                                 return -ENODEV;
1332                         if (c->arg < ICN_BCH) {
1333                                 a = c->arg + 1;
1334                                 if (card->fw_rev >= 300) {
1335                                         switch (card->l2_proto[a - 1]) {
1336                                                 case ISDN_PROTO_L2_X75I:
1337                                                         sprintf(cbuf, "%02d;BX75\n", (int) a);
1338                                                         break;
1339                                                 case ISDN_PROTO_L2_HDLC:
1340                                                         sprintf(cbuf, "%02d;BTRA\n", (int) a);
1341                                                         break;
1342                                         }
1343                                         i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1344                                 }
1345                                 sprintf(cbuf, "%02d;DCON_R\n", (int) a);
1346                                 i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1347                         }
1348                         break;
1349                 case ISDN_CMD_ACCEPTB:
1350                         if (!card->flags & ICN_FLAGS_RUNNING)
1351                                 return -ENODEV;
1352                         if (c->arg < ICN_BCH) {
1353                                 a = c->arg + 1;
1354                                 if (card->fw_rev >= 300)
1355                                         switch (card->l2_proto[a - 1]) {
1356                                                 case ISDN_PROTO_L2_X75I:
1357                                                         sprintf(cbuf, "%02d;BCON_R,BX75\n", (int) a);
1358                                                         break;
1359                                                 case ISDN_PROTO_L2_HDLC:
1360                                                         sprintf(cbuf, "%02d;BCON_R,BTRA\n", (int) a);
1361                                                         break;
1362                                 } else
1363                                         sprintf(cbuf, "%02d;BCON_R\n", (int) a);
1364                                 i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1365                         }
1366                         break;
1367                 case ISDN_CMD_HANGUP:
1368                         if (!card->flags & ICN_FLAGS_RUNNING)
1369                                 return -ENODEV;
1370                         if (c->arg < ICN_BCH) {
1371                                 a = c->arg + 1;
1372                                 sprintf(cbuf, "%02d;BDIS_R\n%02d;DDIS_R\n", (int) a, (int) a);
1373                                 i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1374                         }
1375                         break;
1376                 case ISDN_CMD_SETEAZ:
1377                         if (!card->flags & ICN_FLAGS_RUNNING)
1378                                 return -ENODEV;
1379                         if (card->leased)
1380                                 break;
1381                         if (c->arg < ICN_BCH) {
1382                                 a = c->arg + 1;
1383                                 if (card->ptype == ISDN_PTYPE_EURO) {
1384                                         sprintf(cbuf, "%02d;MS%s%s\n", (int) a,
1385                                                 c->parm.num[0] ? "N" : "ALL", c->parm.num);
1386                                 } else
1387                                         sprintf(cbuf, "%02d;EAZ%s\n", (int) a,
1388                                                 c->parm.num[0] ? (char *)(c->parm.num) : "0123456789");
1389                                 i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1390                         }
1391                         break;
1392                 case ISDN_CMD_CLREAZ:
1393                         if (!card->flags & ICN_FLAGS_RUNNING)
1394                                 return -ENODEV;
1395                         if (card->leased)
1396                                 break;
1397                         if (c->arg < ICN_BCH) {
1398                                 a = c->arg + 1;
1399                                 if (card->ptype == ISDN_PTYPE_EURO)
1400                                         sprintf(cbuf, "%02d;MSNC\n", (int) a);
1401                                 else
1402                                         sprintf(cbuf, "%02d;EAZC\n", (int) a);
1403                                 i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1404                         }
1405                         break;
1406                 case ISDN_CMD_SETL2:
1407                         if (!card->flags & ICN_FLAGS_RUNNING)
1408                                 return -ENODEV;
1409                         if ((c->arg & 255) < ICN_BCH) {
1410                                 a = c->arg;
1411                                 switch (a >> 8) {
1412                                         case ISDN_PROTO_L2_X75I:
1413                                                 sprintf(cbuf, "%02d;BX75\n", (int) (a & 255) + 1);
1414                                                 break;
1415                                         case ISDN_PROTO_L2_HDLC:
1416                                                 sprintf(cbuf, "%02d;BTRA\n", (int) (a & 255) + 1);
1417                                                 break;
1418                                         default:
1419                                                 return -EINVAL;
1420                                 }
1421                                 i = icn_writecmd(cbuf, strlen(cbuf), 0, card);
1422                                 card->l2_proto[a & 255] = (a >> 8);
1423                         }
1424                         break;
1425                 case ISDN_CMD_SETL3:
1426                         if (!card->flags & ICN_FLAGS_RUNNING)
1427                                 return -ENODEV;
1428                         return 0;
1429                 default:
1430                         return -EINVAL;
1431         }
1432         return 0;
1433 }
1434
1435 /*
1436  * Find card with given driverId
1437  */
1438 static inline icn_card *
1439 icn_findcard(int driverid)
1440 {
1441         icn_card *p = cards;
1442
1443         while (p) {
1444                 if (p->myid == driverid)
1445                         return p;
1446                 p = p->next;
1447         }
1448         return (icn_card *) 0;
1449 }
1450
1451 /*
1452  * Wrapper functions for interface to linklevel
1453  */
1454 static int
1455 if_command(isdn_ctrl * c)
1456 {
1457         icn_card *card = icn_findcard(c->driver);
1458
1459         if (card)
1460                 return (icn_command(c, card));
1461         printk(KERN_ERR
1462                "icn: if_command %d called with invalid driverId %d!\n",
1463                c->command, c->driver);
1464         return -ENODEV;
1465 }
1466
1467 static int
1468 if_writecmd(const u_char __user *buf, int len, int id, int channel)
1469 {
1470         icn_card *card = icn_findcard(id);
1471
1472         if (card) {
1473                 if (!card->flags & ICN_FLAGS_RUNNING)
1474                         return -ENODEV;
1475                 return (icn_writecmd(buf, len, 1, card));
1476         }
1477         printk(KERN_ERR
1478                "icn: if_writecmd called with invalid driverId!\n");
1479         return -ENODEV;
1480 }
1481
1482 static int
1483 if_readstatus(u_char __user *buf, int len, int id, int channel)
1484 {
1485         icn_card *card = icn_findcard(id);
1486
1487         if (card) {
1488                 if (!card->flags & ICN_FLAGS_RUNNING)
1489                         return -ENODEV;
1490                 return (icn_readstatus(buf, len, card));
1491         }
1492         printk(KERN_ERR
1493                "icn: if_readstatus called with invalid driverId!\n");
1494         return -ENODEV;
1495 }
1496
1497 static int
1498 if_sendbuf(int id, int channel, int ack, struct sk_buff *skb)
1499 {
1500         icn_card *card = icn_findcard(id);
1501
1502         if (card) {
1503                 if (!card->flags & ICN_FLAGS_RUNNING)
1504                         return -ENODEV;
1505                 return (icn_sendbuf(channel, ack, skb, card));
1506         }
1507         printk(KERN_ERR
1508                "icn: if_sendbuf called with invalid driverId!\n");
1509         return -ENODEV;
1510 }
1511
1512 /*
1513  * Allocate a new card-struct, initialize it
1514  * link it into cards-list and register it at linklevel.
1515  */
1516 static icn_card *
1517 icn_initcard(int port, char *id)
1518 {
1519         icn_card *card;
1520         int i;
1521
1522         if (!(card = (icn_card *) kmalloc(sizeof(icn_card), GFP_KERNEL))) {
1523                 printk(KERN_WARNING
1524                        "icn: (%s) Could not allocate card-struct.\n", id);
1525                 return (icn_card *) 0;
1526         }
1527         memset((char *) card, 0, sizeof(icn_card));
1528         spin_lock_init(&card->lock);
1529         card->port = port;
1530         card->interface.owner = THIS_MODULE;
1531         card->interface.hl_hdrlen = 1;
1532         card->interface.channels = ICN_BCH;
1533         card->interface.maxbufsize = 4000;
1534         card->interface.command = if_command;
1535         card->interface.writebuf_skb = if_sendbuf;
1536         card->interface.writecmd = if_writecmd;
1537         card->interface.readstat = if_readstatus;
1538         card->interface.features = ISDN_FEATURE_L2_X75I |
1539             ISDN_FEATURE_L2_HDLC |
1540             ISDN_FEATURE_L3_TRANS |
1541             ISDN_FEATURE_P_UNKNOWN;
1542         card->ptype = ISDN_PTYPE_UNKNOWN;
1543         strlcpy(card->interface.id, id, sizeof(card->interface.id));
1544         card->msg_buf_write = card->msg_buf;
1545         card->msg_buf_read = card->msg_buf;
1546         card->msg_buf_end = &card->msg_buf[sizeof(card->msg_buf) - 1];
1547         for (i = 0; i < ICN_BCH; i++) {
1548                 card->l2_proto[i] = ISDN_PROTO_L2_X75I;
1549                 skb_queue_head_init(&card->spqueue[i]);
1550         }
1551         card->next = cards;
1552         cards = card;
1553         if (!register_isdn(&card->interface)) {
1554                 cards = cards->next;
1555                 printk(KERN_WARNING
1556                        "icn: Unable to register %s\n", id);
1557                 kfree(card);
1558                 return (icn_card *) 0;
1559         }
1560         card->myid = card->interface.channels;
1561         sprintf(card->regname, "icn-isdn (%s)", card->interface.id);
1562         return card;
1563 }
1564
1565 static int
1566 icn_addcard(int port, char *id1, char *id2)
1567 {
1568         icn_card *card;
1569         icn_card *card2;
1570
1571         if (!(card = icn_initcard(port, id1))) {
1572                 return -EIO;
1573         }
1574         if (!strlen(id2)) {
1575                 printk(KERN_INFO
1576                        "icn: (%s) ICN-2B, port 0x%x added\n",
1577                        card->interface.id, port);
1578                 return 0;
1579         }
1580         if (!(card2 = icn_initcard(port, id2))) {
1581                 printk(KERN_INFO
1582                        "icn: (%s) half ICN-4B, port 0x%x added\n",
1583                        card2->interface.id, port);
1584                 return 0;
1585         }
1586         card->doubleS0 = 1;
1587         card->secondhalf = 0;
1588         card->other = card2;
1589         card2->doubleS0 = 1;
1590         card2->secondhalf = 1;
1591         card2->other = card;
1592         printk(KERN_INFO
1593                "icn: (%s and %s) ICN-4B, port 0x%x added\n",
1594                card->interface.id, card2->interface.id, port);
1595         return 0;
1596 }
1597
1598 #ifndef MODULE
1599 static int __init
1600 icn_setup(char *line)
1601 {
1602         char *p, *str;
1603         int     ints[3];
1604         static char sid[20];
1605         static char sid2[20];
1606
1607         str = get_options(line, 2, ints);
1608         if (ints[0])
1609                 portbase = ints[1];
1610         if (ints[0] > 1)
1611                 membase = (unsigned long)ints[2];
1612         if (str && *str) {
1613                 strcpy(sid, str);
1614                 icn_id = sid;
1615                 if ((p = strchr(sid, ','))) {
1616                         *p++ = 0;
1617                         strcpy(sid2, p);
1618                         icn_id2 = sid2;
1619                 }
1620         }
1621         return(1);
1622 }
1623 __setup("icn=", icn_setup);
1624 #endif /* MODULE */
1625
1626 static int __init icn_init(void)
1627 {
1628         char *p;
1629         char rev[10];
1630
1631         memset(&dev, 0, sizeof(icn_dev));
1632         dev.memaddr = (membase & 0x0ffc000);
1633         dev.channel = -1;
1634         dev.mcard = NULL;
1635         dev.firstload = 1;
1636         spin_lock_init(&dev.devlock);
1637
1638         if ((p = strchr(revision, ':'))) {
1639                 strcpy(rev, p + 1);
1640                 p = strchr(rev, '$');
1641                 *p = 0;
1642         } else
1643                 strcpy(rev, " ??? ");
1644         printk(KERN_NOTICE "ICN-ISDN-driver Rev%smem=0x%08lx\n", rev,
1645                dev.memaddr);
1646         return (icn_addcard(portbase, icn_id, icn_id2));
1647 }
1648
1649 static void __exit icn_exit(void)
1650 {
1651         isdn_ctrl cmd;
1652         icn_card *card = cards;
1653         icn_card *last, *tmpcard;
1654         int i;
1655         unsigned long flags;
1656
1657         icn_stopallcards();
1658         while (card) {
1659                 cmd.command = ISDN_STAT_UNLOAD;
1660                 cmd.driver = card->myid;
1661                 card->interface.statcallb(&cmd);
1662                 spin_lock_irqsave(&card->lock, flags);
1663                 if (card->rvalid) {
1664                         OUTB_P(0, ICN_RUN);     /* Reset Controller     */
1665                         OUTB_P(0, ICN_MAPRAM);  /* Disable RAM          */
1666                         if (card->secondhalf || (!card->doubleS0)) {
1667                                 release_region(card->port, ICN_PORTLEN);
1668                                 card->rvalid = 0;
1669                         }
1670                         for (i = 0; i < ICN_BCH; i++)
1671                                 icn_free_queue(card, i);
1672                 }
1673                 tmpcard = card->next;
1674                 spin_unlock_irqrestore(&card->lock, flags);
1675                 card = tmpcard;
1676         }
1677         card = cards;
1678         cards = NULL;
1679         while (card) {
1680                 last = card;
1681                 card = card->next;
1682                 kfree(last);
1683         }
1684         if (dev.mvalid) {
1685                 iounmap(dev.shmem);
1686                 release_mem_region(dev.memaddr, 0x4000);
1687         }
1688         printk(KERN_NOTICE "ICN-ISDN-driver unloaded\n");
1689 }
1690
1691 module_init(icn_init);
1692 module_exit(icn_exit);