LXR linux/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 */
  36static 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
  79void 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}
 103EXPORT_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 */
 109static int command_from_LL(isdn_ctrl *cntrl)
 110{
 111        struct cardstate *cs = gigaset_get_cs_by_id(cntrl->driver);
 112        struct bc_state *bcs;
 113        int retval = 0;
 114        struct setup_parm *sp;
 115
 116        gigaset_debugdrivers();
 117
 118        if (!cs) {
 119                warn("LL tried to access unknown device with nr. %d",
 120                     cntrl->driver);
 121                return -ENODEV;
 122        }
 123
 124        switch (cntrl->command) {
 125        case ISDN_CMD_IOCTL:
 126                gig_dbg(DEBUG_ANY, "ISDN_CMD_IOCTL (driver: %d, arg: %ld)",
 127                        cntrl->driver, cntrl->arg);
 128
 129                warn("ISDN_CMD_IOCTL is not supported.");
 130                return -EINVAL;
 131
 132        case ISDN_CMD_DIAL:
 133                gig_dbg(DEBUG_ANY,
 134                        "ISDN_CMD_DIAL (driver: %d, ch: %ld, "
 135                        "phone: %s, ownmsn: %s, si1: %d, si2: %d)",
 136                        cntrl->driver, cntrl->arg,
 137                        cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn,
 138                        cntrl->parm.setup.si1, cntrl->parm.setup.si2);
 139
 140                if (cntrl->arg >= cs->channels) {
 141                        err("ISDN_CMD_DIAL: invalid channel (%d)",
 142                            (int) cntrl->arg);
 143                        return -EINVAL;
 144                }
 145
 146                bcs = cs->bcs + cntrl->arg;
 147
 148                if (!gigaset_get_channel(bcs)) {
 149                        err("ISDN_CMD_DIAL: channel not free");
 150                        return -EBUSY;
 151                }
 152
 153                sp = kmalloc(sizeof *sp, GFP_ATOMIC);
 154                if (!sp) {
 155                        gigaset_free_channel(bcs);
 156                        err("ISDN_CMD_DIAL: out of memory");
 157                        return -ENOMEM;
 158                }
 159                *sp = cntrl->parm.setup;
 160
 161                if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp,
 162                                       bcs->at_state.seq_index, NULL)) {
 163                        //FIXME what should we do?
 164                        kfree(sp);
 165                        gigaset_free_channel(bcs);
 166                        return -ENOMEM;
 167                }
 168
 169                gig_dbg(DEBUG_CMD, "scheduling DIAL");
 170                gigaset_schedule_event(cs);
 171                break;
 172        case ISDN_CMD_ACCEPTD: //FIXME
 173                gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTD");
 174
 175                if (cntrl->arg >= cs->channels) {
 176                        err("ISDN_CMD_ACCEPTD: invalid channel (%d)",
 177                            (int) cntrl->arg);
 178                        return -EINVAL;
 179                }
 180
 181                if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
 182                                       EV_ACCEPT, NULL, 0, NULL)) {
 183                        //FIXME what should we do?
 184                        return -ENOMEM;
 185                }
 186
 187                gig_dbg(DEBUG_CMD, "scheduling ACCEPT");
 188                gigaset_schedule_event(cs);
 189
 190                break;
 191        case ISDN_CMD_ACCEPTB:
 192                gig_dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTB");
 193                break;
 194        case ISDN_CMD_HANGUP:
 195                gig_dbg(DEBUG_ANY, "ISDN_CMD_HANGUP (ch: %d)",
 196                        (int) cntrl->arg);
 197
 198                if (cntrl->arg >= cs->channels) {
 199                        err("ISDN_CMD_HANGUP: invalid channel (%u)",
 200                            (unsigned) cntrl->arg);
 201                        return -EINVAL;
 202                }
 203
 204                if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state,
 205                                       EV_HUP, NULL, 0, NULL)) {
 206                        //FIXME what should we do?
 207                        return -ENOMEM;
 208                }
 209
 210                gig_dbg(DEBUG_CMD, "scheduling HUP");
 211                gigaset_schedule_event(cs);
 212
 213                break;
 214        case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ //FIXME
 215                gig_dbg(DEBUG_ANY, "ISDN_CMD_CLREAZ");
 216                break;
 217        case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ //FIXME
 218                gig_dbg(DEBUG_ANY,
 219                        "ISDN_CMD_SETEAZ (id: %d, ch: %ld, number: %s)",
 220                        cntrl->driver, cntrl->arg, cntrl->parm.num);
 221                break;
 222        case ISDN_CMD_SETL2: /* Set L2 to given protocol */
 223                gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL2 (ch: %ld, proto: %lx)",
 224                        cntrl->arg & 0xff, (cntrl->arg >> 8));
 225
 226                if ((cntrl->arg & 0xff) >= cs->channels) {
 227                        err("ISDN_CMD_SETL2: invalid channel (%u)",
 228                            (unsigned) cntrl->arg & 0xff);
 229                        return -EINVAL;
 230                }
 231
 232                if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg & 0xff].at_state,
 233                                       EV_PROTO_L2, NULL, cntrl->arg >> 8,
 234                                       NULL)) {
 235                        //FIXME what should we do?
 236                        return -ENOMEM;
 237                }
 238
 239                gig_dbg(DEBUG_CMD, "scheduling PROTO_L2");
 240                gigaset_schedule_event(cs);
 241                break;
 242        case ISDN_CMD_SETL3: /* Set L3 to given protocol */
 243                gig_dbg(DEBUG_ANY, "ISDN_CMD_SETL3 (ch: %ld, proto: %lx)",
 244                        cntrl->arg & 0xff, (cntrl->arg >> 8));
 245
 246                if ((cntrl->arg & 0xff) >= cs->channels) {
 247                        err("ISDN_CMD_SETL3: invalid channel (%u)",
 248                            (unsigned) cntrl->arg & 0xff);
 249                        return -EINVAL;
 250                }
 251
 252                if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
 253                        err("ISDN_CMD_SETL3: invalid protocol %lu",
 254                            cntrl->arg >> 8);
 255                        return -EINVAL;
 256                }
 257
 258                break;
 259        case ISDN_CMD_PROCEED:
 260                gig_dbg(DEBUG_ANY, "ISDN_CMD_PROCEED"); //FIXME
 261                break;
 262        case ISDN_CMD_ALERT:
 263                gig_dbg(DEBUG_ANY, "ISDN_CMD_ALERT"); //FIXME
 264                if (cntrl->arg >= cs->channels) {
 265                        err("ISDN_CMD_ALERT: invalid channel (%d)",
 266                            (int) cntrl->arg);
 267                        return -EINVAL;
 268                }
 269                //bcs = cs->bcs + cntrl->arg;
 270                //bcs->proto2 = -1;
 271                // FIXME
 272                break;
 273        case ISDN_CMD_REDIR:
 274                gig_dbg(DEBUG_ANY, "ISDN_CMD_REDIR"); //FIXME
 275                break;
 276        case ISDN_CMD_PROT_IO:
 277                gig_dbg(DEBUG_ANY, "ISDN_CMD_PROT_IO");
 278                break;
 279        case ISDN_CMD_FAXCMD:
 280                gig_dbg(DEBUG_ANY, "ISDN_CMD_FAXCMD");
 281                break;
 282        case ISDN_CMD_GETL2:
 283                gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL2");
 284                break;
 285        case ISDN_CMD_GETL3:
 286                gig_dbg(DEBUG_ANY, "ISDN_CMD_GETL3");
 287                break;
 288        case ISDN_CMD_GETEAZ:
 289                gig_dbg(DEBUG_ANY, "ISDN_CMD_GETEAZ");
 290                break;
 291        case ISDN_CMD_SETSIL:
 292                gig_dbg(DEBUG_ANY, "ISDN_CMD_SETSIL");
 293                break;
 294        case ISDN_CMD_GETSIL:
 295                gig_dbg(DEBUG_ANY, "ISDN_CMD_GETSIL");
 296                break;
 297        default:
 298                err("unknown command %d from LL", cntrl->command);
 299                return -EINVAL;
 300        }
 301
 302        return retval;
 303}
 304
 305void gigaset_i4l_cmd(struct cardstate *cs, int cmd)
 306{
 307        isdn_ctrl command;
 308
 309        command.driver = cs->myid;
 310        command.command = cmd;
 311        command.arg = 0;
 312        cs->iif.statcallb(&command);
 313}
 314
 315void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd)
 316{
 317        isdn_ctrl command;
 318
 319        command.driver = bcs->cs->myid;
 320        command.command = cmd;
 321        command.arg = bcs->channel;
 322        bcs->cs->iif.statcallb(&command);
 323}
 324
 325int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data)
 326{
 327        struct bc_state *bcs = at_state->bcs;
 328        unsigned proto;
 329        const char *bc;
 330        size_t length[AT_NUM];
 331        size_t l;
 332        int i;
 333        struct setup_parm *sp = data;
 334
 335        switch (bcs->proto2) {
 336        case ISDN_PROTO_L2_HDLC:
 337                proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 338                break;
 339        case ISDN_PROTO_L2_TRANS:
 340                proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 341                break;
 342        default:
 343                dev_err(bcs->cs->dev, "%s: invalid L2 protocol: %u\n",
 344                        __func__, bcs->proto2);
 345                return -EINVAL;
 346        }
 347
 348        switch (sp->si1) {
 349        case 1:         /* audio */
 350                bc = "9090A3";  /* 3.1 kHz audio, A-law */
 351                break;
 352        case 7:         /* data */
 353        default:        /* hope the app knows what it is doing */
 354                bc = "8890";    /* unrestricted digital information */
 355        }
 356        //FIXME add missing si1 values from 1TR6, inspect si2, set HLC/LLC
 357
 358        length[AT_DIAL ] = 1 + strlen(sp->phone) + 1 + 1;
 359        l = strlen(sp->eazmsn);
 360        length[AT_MSN  ] = l ? 6 + l + 1 + 1 : 0;
 361        length[AT_BC   ] = 5 + strlen(bc) + 1 + 1;
 362        length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
 363        length[AT_ISO  ] = 6 + 1 + 1 + 1; /* channel: 1 character */
 364        length[AT_TYPE ] = 6 + 1 + 1 + 1; /* call type: 1 character */
 365        length[AT_HLC  ] = 0;
 366
 367        for (i = 0; i < AT_NUM; ++i) {
 368                kfree(bcs->commands[i]);
 369                bcs->commands[i] = NULL;
 370                if (length[i] &&
 371                    !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
 372                        dev_err(bcs->cs->dev, "out of memory\n");
 373                        return -ENOMEM;
 374                }
 375        }
 376
 377        /* type = 1: extern, 0: intern, 2: recall, 3: door, 4: centrex */
 378        if (sp->phone[0] == '*' && sp->phone[1] == '*') {
 379                /* internal call: translate ** prefix to CTP value */
 380                snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
 381                         "D%s\r", sp->phone+2);
 382                strncpy(bcs->commands[AT_TYPE], "^SCTP=0\r", length[AT_TYPE]);
 383        } else {
 384                snprintf(bcs->commands[AT_DIAL], length[AT_DIAL],
 385                         "D%s\r", sp->phone);
 386                strncpy(bcs->commands[AT_TYPE], "^SCTP=1\r", length[AT_TYPE]);
 387        }
 388
 389        if (bcs->commands[AT_MSN])
 390                snprintf(bcs->commands[AT_MSN], length[AT_MSN],
 391                         "^SMSN=%s\r", sp->eazmsn);
 392        snprintf(bcs->commands[AT_BC   ], length[AT_BC   ],
 393                 "^SBC=%s\r", bc);
 394        snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
 395                 "^SBPR=%u\r", proto);
 396        snprintf(bcs->commands[AT_ISO  ], length[AT_ISO  ],
 397                 "^SISO=%u\r", (unsigned)bcs->channel + 1);
 398
 399        return 0;
 400}
 401
 402int gigaset_isdn_setup_accept(struct at_state_t *at_state)
 403{
 404        unsigned proto;
 405        size_t length[AT_NUM];
 406        int i;
 407        struct bc_state *bcs = at_state->bcs;
 408
 409        switch (bcs->proto2) {
 410        case ISDN_PROTO_L2_HDLC:
 411                proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 412                break;
 413        case ISDN_PROTO_L2_TRANS:
 414                proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */
 415                break;
 416        default:
 417                dev_err(at_state->cs->dev, "%s: invalid protocol: %u\n",
 418                        __func__, bcs->proto2);
 419                return -EINVAL;
 420        }
 421
 422        length[AT_DIAL ] = 0;
 423        length[AT_MSN  ] = 0;
 424        length[AT_BC   ] = 0;
 425        length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */
 426        length[AT_ISO  ] = 6 + 1 + 1 + 1; /* channel: 1 character */
 427        length[AT_TYPE ] = 0;
 428        length[AT_HLC  ] = 0;
 429
 430        for (i = 0; i < AT_NUM; ++i) {
 431                kfree(bcs->commands[i]);
 432                bcs->commands[i] = NULL;
 433                if (length[i] &&
 434                    !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) {
 435                        dev_err(at_state->cs->dev, "out of memory\n");
 436                        return -ENOMEM;
 437                }
 438        }
 439
 440        snprintf(bcs->commands[AT_PROTO], length[AT_PROTO],
 441                 "^SBPR=%u\r", proto);
 442        snprintf(bcs->commands[AT_ISO  ], length[AT_ISO  ],
 443                 "^SISO=%u\r", (unsigned) bcs->channel + 1);
 444
 445        return 0;
 446}
 447
 448int gigaset_isdn_icall(struct at_state_t *at_state)
 449{
 450        struct cardstate *cs = at_state->cs;
 451        struct bc_state *bcs = at_state->bcs;
 452        isdn_ctrl response;
 453        int retval;
 454
 455        /* fill ICALL structure */
 456        response.parm.setup.si1 = 0;    /* default: unknown */
 457        response.parm.setup.si2 = 0;
 458        response.parm.setup.screen = 0; //FIXME how to set these?
 459        response.parm.setup.plan = 0;
 460        if (!at_state->str_var[STR_ZBC]) {
 461                /* no BC (internal call): assume speech, A-law */
 462                response.parm.setup.si1 = 1;
 463        } else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) {
 464                /* unrestricted digital information */
 465                response.parm.setup.si1 = 7;
 466        } else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) {
 467                /* speech, A-law */
 468                response.parm.setup.si1 = 1;
 469        } else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) {
 470                /* 3,1 kHz audio, A-law */
 471                response.parm.setup.si1 = 1;
 472                response.parm.setup.si2 = 2;
 473        } else {
 474                dev_warn(cs->dev, "RING ignored - unsupported BC %s\n",
 475                     at_state->str_var[STR_ZBC]);
 476                return ICALL_IGNORE;
 477        }
 478        if (at_state->str_var[STR_NMBR]) {
 479                strncpy(response.parm.setup.phone, at_state->str_var[STR_NMBR],
 480                        sizeof response.parm.setup.phone - 1);
 481                response.parm.setup.phone[sizeof response.parm.setup.phone - 1] = 0;
 482        } else
 483                response.parm.setup.phone[0] = 0;
 484        if (at_state->str_var[STR_ZCPN]) {
 485                strncpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN],
 486                        sizeof response.parm.setup.eazmsn - 1);
 487                response.parm.setup.eazmsn[sizeof response.parm.setup.eazmsn - 1] = 0;
 488        } else
 489                response.parm.setup.eazmsn[0] = 0;
 490
 491        if (!bcs) {
 492                dev_notice(cs->dev, "no channel for incoming call\n");
 493                response.command = ISDN_STAT_ICALLW;
 494                response.arg = 0; //FIXME
 495        } else {
 496                gig_dbg(DEBUG_CMD, "Sending ICALL");
 497                response.command = ISDN_STAT_ICALL;
 498                response.arg = bcs->channel; //FIXME
 499        }
 500        response.driver = cs->myid;
 501        retval = cs->iif.statcallb(&response);
 502        gig_dbg(DEBUG_CMD, "Response: %d", retval);
 503        switch (retval) {
 504        case 0: /* no takers */
 505                return ICALL_IGNORE;
 506        case 1: /* alerting */
 507                bcs->chstate |= CHS_NOTIFY_LL;
 508                return ICALL_ACCEPT;
 509        case 2: /* reject */
 510                return ICALL_REJECT;
 511        case 3: /* incomplete */
 512                dev_warn(cs->dev,
 513                       "LL requested unsupported feature: Incomplete Number\n");
 514                return ICALL_IGNORE;
 515        case 4: /* proceeding */
 516                /* Gigaset will send ALERTING anyway.
 517                 * There doesn't seem to be a way to avoid this.
 518                 */
 519                return ICALL_ACCEPT;
 520        case 5: /* deflect */
 521                dev_warn(cs->dev,
 522                         "LL requested unsupported feature: Call Deflection\n");
 523                return ICALL_IGNORE;
 524        default:
 525                dev_err(cs->dev, "LL error %d on ICALL\n", retval);
 526                return ICALL_IGNORE;
 527        }
 528}
 529
 530/* Set Callback function pointer */
 531int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid)
 532{
 533        isdn_if *iif = &cs->iif;
 534
 535        gig_dbg(DEBUG_ANY, "Register driver capabilities to LL");
 536
 537        //iif->id[sizeof(iif->id) - 1]=0;
 538        //strncpy(iif->id, isdnid, sizeof(iif->id) - 1);
 539        if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index)
 540            >= sizeof iif->id)
 541                return -ENOMEM; //FIXME EINVAL/...??
 542
 543        iif->owner = THIS_MODULE;
 544        iif->channels = cs->channels;
 545        iif->maxbufsize = MAX_BUF_SIZE;
 546        iif->features = ISDN_FEATURE_L2_TRANS |
 547                ISDN_FEATURE_L2_HDLC |
 548#ifdef GIG_X75
 549                ISDN_FEATURE_L2_X75I |
 550#endif
 551                ISDN_FEATURE_L3_TRANS |
 552                ISDN_FEATURE_P_EURO;
 553        iif->hl_hdrlen = HW_HDR_LEN;            /* Area for storing ack */
 554        iif->command = command_from_LL;
 555        iif->writebuf_skb = writebuf_from_LL;
 556        iif->writecmd = NULL;                   /* Don't support isdnctrl */
 557        iif->readstat = NULL;                   /* Don't support isdnctrl */
 558        iif->rcvcallb_skb = NULL;               /* Will be set by LL */
 559        iif->statcallb = NULL;                  /* Will be set by LL */
 560
 561        if (!register_isdn(iif))
 562                return 0;
 563
 564        cs->myid = iif->channels;               /* Set my device id */
 565        return 1;
 566}
 567