git.oblomov.eu Git - linux-2.6/blob - drivers/isdn/gigaset/i4l.c

   1 /*
   2  * Stuff used by all variants of the driver
   3  *
   4  * Copyright (c) 2001 by Stefan Eilers,
   5  *                       Hansjoerg Lipp <hjlipp@web.de>,
   6  *                       Tilman Schmidt <tilman@imap.cc>.
   7  *
   8  * =====================================================================
   9  *      This program is free software; you can redistribute it and/or
  10  *      modify it under the terms of the GNU General Public License as
  11  *      published by the Free Software Foundation; either version 2 of
  12  *      the License, or (at your option) any later version.
  13  * =====================================================================
  14  */
  15
  16 #include "gigaset.h"
  17
  18 /* == Handling of I4L IO =====================================================*/
  19
  20 /* writebuf_from_LL
  21  * called by LL to transmit data on an open channel
  22  * inserts the buffer data into the send queue and starts the transmission
  23  * Note that this operation must not sleep!
  24  * When the buffer is processed completely, gigaset_skb_sent() should be called.
  25  * parameters:
  26  *      driverID        driver ID as assigned by LL
  27  *      channel         channel number
  28  *      ack             if != 0 LL wants to be notified on completion via
  29  *                      statcallb(ISDN_STAT_BSENT)
  30  *      skb             skb containing data to send
  31  * return value:
  32  *      number of accepted bytes
  33  *      0 if temporarily unable to accept data (out of buffer space)
  34  *      <0 on error (eg. -EINVAL)
  35  */
  36 static int writebuf_from_LL(int driverID, int channel, int ack,
  37                             struct sk_buff *skb)
  38 {
  39         struct cardstate *cs;
  40         struct bc_state *bcs;
  41         unsigned len;
  42         unsigned skblen;
  43
  44         if (!(cs = gigaset_get_cs_by_id(driverID))) {
  45                 err("%s: invalid driver ID (%d)", __func__, driverID);
  46                 return -ENODEV;
  47         }
  48         if (channel < 0 || channel >= cs->channels) {
  49                 err("%s: invalid channel ID (%d)", __func__, channel);
  50                 return -ENODEV;
  51         }
  52         bcs = &cs->bcs[channel];
  53         len = skb->len;
  54
  55         gig_dbg(DEBUG_LLDATA,
  56                 "Receiving data from LL (id: %d, ch: %d, ack: %d, sz: %d)",
  57                 driverID, channel, ack, len);
  58
  59         if (!len) {
  60                 if (ack)
  61                         notice("%s: not ACKing empty packet", __func__);
  62                 return 0;
  63         }
  64         if (len > MAX_BUF_SIZE) {
  65                 err("%s: packet too large (%d bytes)", __func__, len);
  66                 return -EINVAL;
  67         }
  68
  69         skblen = ack ? len : 0;
  70         skb->head[0] = skblen & 0xff;
  71         skb->head[1] = skblen >> 8;
  72         gig_dbg(DEBUG_MCMD, "skb: len=%u, skblen=%u: %02x %02x",
  73                 len, skblen, (unsigned) skb->head[0], (unsigned) skb->head[1]);
  74
  75         /* pass to device-specific module */
  76         return cs->ops->send_skb(bcs, skb);
  77 }
  78
  79 void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb)
  80 {
  81         unsigned len;
  82         isdn_ctrl response;
  83
  84         ++bcs->trans_up;
  85
  86         if (skb->len)
  87                 dev_warn(bcs->cs->dev, "%s: skb->len==%d\n",
  88                          __func__, skb->len);
  89
  90         len = (unsigned char) skb->head[0] |
  91               (unsigned) (unsigned char) skb->head[1] << 8;
  92         if (len) {
  93                 gig_dbg(DEBUG_MCMD, "ACKing to LL (id: %d, ch: %d, sz: %u)",
  94                         bcs->cs->myid, bcs->channel, len);
  95
  96                 response.driver = bcs->cs->myid;
  97                 response.command = ISDN_STAT_BSENT;
  98                 response.arg = bcs->channel;
  99                 response.parm.length = len;
 100                 bcs->cs->iif.statcallb(&response);
 101         }
 102 }
 103 EXPORT_SYMBOL_GPL(gigaset_skb_sent);
 104
 105 /* This function will be called by LL to send commands
 106  * NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL,
 107  * so don't put too much effort into it.
 108  */
 109 static int command_from_LL(isdn_ctrl *cntrl)
 110 {
 111         struct cardstate *cs = gigaset_get_cs_by_id(cntrl->driver);
 112         //isdn_ctrl response;
 113         //unsigned long flags;
 114         struct bc_state *bcs;
 115         int retval = 0;
 116         struct setup_parm *sp;
 117         unsigned param;
 118         unsigned long flags;
 119
 120         gigaset_debugdrivers();
 121
 122         if (!cs) {
 123                 warn("LL tried to access unknown device with nr. %d",
 124                      cntrl->driver);
 125                 return -ENODEV;
 126         }
 127
 128         switch (cntrl->command) {
 129         case ISDN_CMD_IOCTL:
 130                 gig_dbg(DEBUG_ANY, "ISDN_CMD_IOCTL (driver: %d, arg: %ld)",
 131                         cntrl->driver, cntrl->arg);
 132
 133                 warn("ISDN_CMD_IOCTL is not supported.");
 134                 return -EINVAL;
 135
 136         case ISDN_CMD_DIAL:
 137                 gig_dbg(DEBUG_ANY,
 138                         "ISDN_CMD_DIAL (driver: %d, ch: %ld, "
 139                         "phone: %s, ownmsn: %s, si1: %d, si2: %d)",
 140                         cntrl->driver, cntrl->arg,
 141                         cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn,
 142                         cntrl->parm.setup.si1, cntrl->parm.setup.si2);
 143
 144                 if (cntrl->arg >= cs->channels) {
 145                         err("ISDN_CMD_DIAL: invalid channel (%d)",
 146                             (int) cntrl->arg);
 147                         return -EINVAL;
 148                 }
 149
 150                 bcs = cs->bcs + cntrl->arg;
 151
 152                 if (!gigaset_get_channel(bcs)) {
 153                         err("ISDN_CMD_DIAL: channel not free");
 154                         return -EBUSY;
 155                 }
 156
 157                 sp = kmalloc(sizeof *sp, GFP_ATOMIC);
 158                 if (!sp) {
 159                         gigaset_free_channel(bcs);
 160                         err("ISDN_CMD_DIAL: out of memory");
 161                         return -ENOMEM;
 162                 }
 163                 *sp = cntrl->parm.setup;
 164
 165                 spin_lock_irqsave(&cs->lock, flags);
 166                 param = bcs->at_state.seq_index;
 167                 spin_unlock_irqrestore(&cs->lock, flags);
 168
 169                 if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp, param,
 170                                        NULL)) {
 171                         //FIXME what should we do?
 172                         kfree(sp);
 173                         gigaset_free_channel(bcs);
 174                         return -ENOMEM;
 175                 }
 176
 177                 gig_dbg(DEBUG_CMD, "scheduling DIAL");
 178                 gigaset_schedule_event(cs);
 179                 break;
 180         case ISDN_CMD_ACCEPTD: //FIXME
 181                 gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTD");
 182
 183                 if (cntrl->arg >= cs->channels) {
 184                         err("ISDN_CMD_ACCEPTD: invalid channel (%d)",
 185                             (int) cntrl->arg);
 186                         return -EINVAL;
 187                 }
 188
 189                 if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
 190                                        EV_ACCEPT, NULL, 0, NULL)) {
 191                         //FIXME what should we do?
 192                         return -ENOMEM;
 193                 }
 194
 195                 gig_dbg(DEBUG_CMD, "scheduling ACCEPT");
 196                 gigaset_schedule_event(cs);
 197
 198                 break;
 199         case ISDN_CMD_ACCEPTB:
 200                 gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTB");
 201                 break;
 202         case ISDN_CMD_HANGUP:
 203                 gig_dbg(DEBUG_ANY, "ISDN_CMD_HANGUP (ch: %d)",
 204                         (int) cntrl->arg);
 205
 206                 if (cntrl->arg >= cs->channels) {
 207                         err("ISDN_CMD_HANGUP: invalid channel (%u)",
 208                             (unsigned) cntrl->arg);
 209                         return -EINVAL;
 210                 }
 211
 212                 if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
 213                                        EV_HUP, NULL, 0, NULL)) {
 214                         //FIXME what should we do?
 215                         return -ENOMEM;
 216                 }
 217
 218                 gig_dbg(DEBUG_CMD, "scheduling HUP");
 219                 gigaset_schedule_event(cs);
 220
 221                 break;
 222         case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ //FIXME
 223                 gig_dbg(DEBUG_ANY, "ISDN_CMD_CLREAZ");
 224                 break;
 225         case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ //FIXME
 226                 gig_dbg(DEBUG_ANY,
 227                         "ISDN_CMD_SETEAZ (id: %d, ch: %ld, number: %s)",
 228                         cntrl->driver, cntrl->arg, cntrl->parm.num);
 229                 break;
 230         case ISDN_CMD_SETL2: /* Set L2 to given protocol */
 231                 gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL2 (ch: %ld, proto: %lx)",
 232                         cntrl->arg & 0xff, (cntrl->arg >> 8));
 233
 234                 if ((cntrl->arg & 0xff) >= cs->channels) {
 235                         err("ISDN_CMD_SETL2: invalid channel (%u)",
 236                             (unsigned) cntrl->arg & 0xff);
 237                         return -EINVAL;
 238                 }
 239
 240                 if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg & 0xff].at_state,
 241                                        EV_PROTO_L2, NULL, cntrl->arg >> 8,
 242                                        NULL)) {
 243                         //FIXME what should we do?
 244                         return -ENOMEM;
 245                 }
 246
 247                 gig_dbg(DEBUG_CMD, "scheduling PROTO_L2");
 248                 gigaset_schedule_event(cs);
 249                 break;
 250         case ISDN_CMD_SETL3: /* Set L3 to given protocol */
 251                 gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL3 (ch: %ld, proto: %lx)",
 252                         cntrl->arg & 0xff, (cntrl->arg >> 8));
 253
 254                 if ((cntrl->arg & 0xff) >= cs->channels) {
 255                         err("ISDN_CMD_SETL3: invalid channel (%u)",
 256                             (unsigned) cntrl->arg & 0xff);
 257                         return -EINVAL;
 258                 }
 259
 260                 if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
 261                         err("ISDN_CMD_SETL3: invalid protocol %lu",
 262                             cntrl->arg >> 8);
 263                         return -EINVAL;
 264                 }
 265
 266                 break;
 267         case ISDN_CMD_PROCEED:
 268                 gig_dbg(DEBUG_ANY, "ISDN_CMD_PROCEED"); //FIXME
 269                 break;
 270         case ISDN_CMD_ALERT:
 271                 gig_dbg(DEBUG_ANY, "ISDN_CMD_ALERT"); //FIXME
 272                 if (cntrl->arg >= cs->channels) {
 273                         err("ISDN_CMD_ALERT: invalid channel (%d)",
 274                             (int) cntrl->arg);
 275                         return -EINVAL;
 276                 }
 277                 //bcs = cs->bcs + cntrl->arg;
 278                 //bcs->proto2 = -1;
 279                 // FIXME
 280                 break;
 281         case ISDN_CMD_REDIR:
 282                 gig_dbg(DEBUG_ANY, "ISDN_CMD_REDIR"); //FIXME
 283                 break;
 284         case ISDN_CMD_PROT_IO:
 285                 gig_dbg(DEBUG_ANY, "ISDN_CMD_PROT_IO");
 286                 break;
 287         case ISDN_CMD_FAXCMD:
 288                 gig_dbg(DEBUG_ANY, "ISDN_CMD_FAXCMD");
 289                 break;
 290         case ISDN_CMD_GETL2:
 291                 gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL2");
 292                 break;
 293         case ISDN_CMD_GETL3:
 294                 gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL3");
 295                 break;
 296         case ISDN_CMD_GETEAZ:
 297                 gig_dbg(DEBUG_ANY, "ISDN_CMD_GETEAZ");
 298                 break;
 299         case ISDN_CMD_SETSIL:
 300                 gig_dbg(DEBUG_ANY, "ISDN_CMD_SETSIL");
 301                 break;
 302         case ISDN_CMD_GETSIL:
 303                 gig_dbg(DEBUG_ANY, "ISDN_CMD_GETSIL");
 304                 break;
 305         default:
 306                 err("unknown command %d from LL", cntrl->command);
 307                 return -EINVAL;
 308         }
 309
 310         return retval;
 311 }
 312
 313 void gigaset_i4l_cmd(struct cardstate *cs, int cmd)
 314 {
 315         isdn_ctrl command;
 316
 317         command.driver = cs->myid;
 318         command.command = cmd;
 319         command.arg = 0;
 320         cs->iif.statcallb(&command);
 321 }
 322
 323 void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd)
 324 {
 325         isdn_ctrl command;
 326
 327         command.driver = bcs->cs->myid;
 328         command.command = cmd;
 329         command.arg = bcs->channel;
 330         bcs->cs->iif.statcallb(&command);
 331 }
 332
 333 int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data)
 334 {
 335         struct bc_state *bcs = at_state->bcs;
 336         unsigned proto;
 337         const char *bc;
 338         size_t length[AT_NUM];
 339         size_t l;
 340         int i;
 341         struct setup_parm *sp = data;
 342
 343         switch (bcs->proto2) {
 344         case ISDN_PROTO_L2_HDLC:
 345                 proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 346                 break;
 347         case ISDN_PROTO_L2_TRANS:
 348                 proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 349                 break;
 350         default:
 351                 dev_err(bcs->cs->dev, "%s: invalid L2 protocol: %u\n",
 352                         __func__, bcs->proto2);
 353                 return -EINVAL;
 354         }
 355
 356         switch (sp->si1) {
 357         case 1:         /* audio */
 358                 bc = "9090A3";  /* 3.1 kHz audio, A-law */
 359                 break;
 360         case 7:         /* data */
 361         default:        /* hope the app knows what it is doing */
 362                 bc = "8890";    /* unrestricted digital information */
 363         }
 364         //FIXME add missing si1 values from 1TR6, inspect si2, set HLC/LLC
 365
 366         length[AT_DIAL ] = 1 + strlen(sp->phone) + 1 + 1;
 367         l = strlen(sp->eazmsn);
 368         length[AT_MSN  ] = l ? 6 + l + 1 + 1 : 0;
 369         length[AT_BC   ] = 5 + strlen(bc) + 1 + 1;
 370         length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
 371         length[AT_ISO  ] = 6 + 1 + 1 + 1; /* channel: 1 character */
 372         length[AT_TYPE ] = 6 + 1 + 1 + 1; /* call type: 1 character */
 373         length[AT_HLC  ] = 0;
 374
 375         for (i = 0; i < AT_NUM; ++i) {
 376                 kfree(bcs->commands[i]);
 377                 bcs->commands[i] = NULL;
 378                 if (length[i] &&
 379                     !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
 380                         dev_err(bcs->cs->dev, "out of memory\n");
 381                         return -ENOMEM;
 382                 }
 383         }
 384
 385         /* type = 1: extern, 0: intern, 2: recall, 3: door, 4: centrex */
 386         if (sp->phone[0] == '*' && sp->phone[1] == '*') {
 387                 /* internal call: translate ** prefix to CTP value */
 388                 snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
 389                          "D%s\r", sp->phone+2);
 390                 strncpy(bcs->commands[AT_TYPE], "^SCTP=0\r", length[AT_TYPE]);
 391         } else {
 392                 snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
 393                          "D%s\r", sp->phone);
 394                 strncpy(bcs->commands[AT_TYPE], "^SCTP=1\r", length[AT_TYPE]);
 395         }
 396
 397         if (bcs->commands[AT_MSN])
 398                 snprintf(bcs->commands[AT_MSN], length[AT_MSN],
 399                          "^SMSN=%s\r", sp->eazmsn);
 400         snprintf(bcs->commands[AT_BC   ], length[AT_BC   ],
 401                  "^SBC=%s\r", bc);
 402         snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
 403                  "^SBPR=%u\r", proto);
 404         snprintf(bcs->commands[AT_ISO  ], length[AT_ISO  ],
 405                  "^SISO=%u\r", (unsigned)bcs->channel + 1);
 406
 407         return 0;
 408 }
 409
 410 int gigaset_isdn_setup_accept(struct at_state_t *at_state)
 411 {
 412         unsigned proto;
 413         size_t length[AT_NUM];
 414         int i;
 415         struct bc_state *bcs = at_state->bcs;
 416
 417         switch (bcs->proto2) {
 418         case ISDN_PROTO_L2_HDLC:
 419                 proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 420                 break;
 421         case ISDN_PROTO_L2_TRANS:
 422                 proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 423                 break;
 424         default:
 425                 dev_err(at_state->cs->dev, "%s: invalid protocol: %u\n",
 426                         __func__, bcs->proto2);
 427                 return -EINVAL;
 428         }
 429
 430         length[AT_DIAL ] = 0;
 431         length[AT_MSN  ] = 0;
 432         length[AT_BC   ] = 0;
 433         length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
 434         length[AT_ISO  ] = 6 + 1 + 1 + 1; /* channel: 1 character */
 435         length[AT_TYPE ] = 0;
 436         length[AT_HLC  ] = 0;
 437
 438         for (i = 0; i < AT_NUM; ++i) {
 439                 kfree(bcs->commands[i]);
 440                 bcs->commands[i] = NULL;
 441                 if (length[i] &&
 442                     !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
 443                         dev_err(at_state->cs->dev, "out of memory\n");
 444                         return -ENOMEM;
 445                 }
 446         }
 447
 448         snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
 449                  "^SBPR=%u\r", proto);
 450         snprintf(bcs->commands[AT_ISO  ], length[AT_ISO  ],
 451                  "^SISO=%u\r", (unsigned) bcs->channel + 1);
 452
 453         return 0;
 454 }
 455
 456 int gigaset_isdn_icall(struct at_state_t *at_state)
 457 {
 458         struct cardstate *cs = at_state->cs;
 459         struct bc_state *bcs = at_state->bcs;
 460         isdn_ctrl response;
 461         int retval;
 462
 463         /* fill ICALL structure */
 464         response.parm.setup.si1 = 0;    /* default: unknown */
 465         response.parm.setup.si2 = 0;
 466         response.parm.setup.screen = 0; //FIXME how to set these?
 467         response.parm.setup.plan = 0;
 468         if (!at_state->str_var[STR_ZBC]) {
 469                 /* no BC (internal call): assume speech, A-law */
 470                 response.parm.setup.si1 = 1;
 471         } else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) {
 472                 /* unrestricted digital information */
 473                 response.parm.setup.si1 = 7;
 474         } else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) {
 475                 /* speech, A-law */
 476                 response.parm.setup.si1 = 1;
 477         } else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) {
 478                 /* 3,1 kHz audio, A-law */
 479                 response.parm.setup.si1 = 1;
 480                 response.parm.setup.si2 = 2;
 481         } else {
 482                 dev_warn(cs->dev, "RING ignored - unsupported BC %s\n",
 483                      at_state->str_var[STR_ZBC]);
 484                 return ICALL_IGNORE;
 485         }
 486         if (at_state->str_var[STR_NMBR]) {
 487                 strncpy(response.parm.setup.phone, at_state->str_var[STR_NMBR],
 488                         sizeof response.parm.setup.phone - 1);
 489                 response.parm.setup.phone[sizeof response.parm.setup.phone - 1] = 0;
 490         } else
 491                 response.parm.setup.phone[0] = 0;
 492         if (at_state->str_var[STR_ZCPN]) {
 493                 strncpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN],
 494                         sizeof response.parm.setup.eazmsn - 1);
 495                 response.parm.setup.eazmsn[sizeof response.parm.setup.eazmsn - 1] = 0;
 496         } else
 497                 response.parm.setup.eazmsn[0] = 0;
 498
 499         if (!bcs) {
 500                 dev_notice(cs->dev, "no channel for incoming call\n");
 501                 response.command = ISDN_STAT_ICALLW;
 502                 response.arg = 0; //FIXME
 503         } else {
 504                 gig_dbg(DEBUG_CMD, "Sending ICALL");
 505                 response.command = ISDN_STAT_ICALL;
 506                 response.arg = bcs->channel; //FIXME
 507         }
 508         response.driver = cs->myid;
 509         retval = cs->iif.statcallb(&response);
 510         gig_dbg(DEBUG_CMD, "Response: %d", retval);
 511         switch (retval) {
 512         case 0: /* no takers */
 513                 return ICALL_IGNORE;
 514         case 1: /* alerting */
 515                 bcs->chstate |= CHS_NOTIFY_LL;
 516                 return ICALL_ACCEPT;
 517         case 2: /* reject */
 518                 return ICALL_REJECT;
 519         case 3: /* incomplete */
 520                 dev_warn(cs->dev,
 521                        "LL requested unsupported feature: Incomplete Number\n");
 522                 return ICALL_IGNORE;
 523         case 4: /* proceeding */
 524                 /* Gigaset will send ALERTING anyway.
 525                  * There doesn't seem to be a way to avoid this.
 526                  */
 527                 return ICALL_ACCEPT;
 528         case 5: /* deflect */
 529                 dev_warn(cs->dev,
 530                          "LL requested unsupported feature: Call Deflection\n");
 531                 return ICALL_IGNORE;
 532         default:
 533                 dev_err(cs->dev, "LL error %d on ICALL\n", retval);
 534                 return ICALL_IGNORE;
 535         }
 536 }
 537
 538 /* Set Callback function pointer */
 539 int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid)
 540 {
 541         isdn_if *iif = &cs->iif;
 542
 543         gig_dbg(DEBUG_ANY, "Register driver capabilities to LL");
 544
 545         //iif->id[sizeof(iif->id) - 1]=0;
 546         //strncpy(iif->id, isdnid, sizeof(iif->id) - 1);
 547         if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index)
 548             >= sizeof iif->id)
 549                 return -ENOMEM; //FIXME EINVAL/...??
 550
 551         iif->owner = THIS_MODULE;
 552         iif->channels = cs->channels;
 553         iif->maxbufsize = MAX_BUF_SIZE;
 554         iif->features = ISDN_FEATURE_L2_TRANS |
 555                 ISDN_FEATURE_L2_HDLC |
 556 #ifdef GIG_X75
 557                 ISDN_FEATURE_L2_X75I |
 558 #endif
 559                 ISDN_FEATURE_L3_TRANS |
 560                 ISDN_FEATURE_P_EURO;
 561         iif->hl_hdrlen = HW_HDR_LEN;            /* Area for storing ack */
 562         iif->command = command_from_LL;
 563         iif->writebuf_skb = writebuf_from_LL;
 564         iif->writecmd = NULL;                   /* Don't support isdnctrl */
 565         iif->readstat = NULL;                   /* Don't support isdnctrl */
 566         iif->rcvcallb_skb = NULL;               /* Will be set by LL */
 567         iif->statcallb = NULL;                  /* Will be set by LL */
 568
 569         if (!register_isdn(iif))
 570                 return 0;
 571
 572         cs->myid = iif->channels;               /* Set my device id */
 573         return 1;
 574 }