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