drivers/isdn/capi/capidrv.c

   1 /* $Id: capidrv.c,v 1.1.2.2 2004/01/12 23:17:24 keil Exp $
   2  *
   3  * ISDN4Linux Driver, using capi20 interface (kernelcapi)
   4  *
   5  * Copyright 1997 by Carsten Paeth <calle@calle.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 <linux/module.h>
  13 #include <linux/errno.h>
  14 #include <linux/kernel.h>
  15 #include <linux/major.h>
  16 #include <linux/slab.h>
  17 #include <linux/fcntl.h>
  18 #include <linux/fs.h>
  19 #include <linux/signal.h>
  20 #include <linux/mm.h>
  21 #include <linux/timer.h>
  22 #include <linux/wait.h>
  23 #include <linux/skbuff.h>
  24 #include <linux/isdn.h>
  25 #include <linux/isdnif.h>
  26 #include <linux/proc_fs.h>
  27 #include <linux/capi.h>
  28 #include <linux/kernelcapi.h>
  29 #include <linux/ctype.h>
  30 #include <linux/init.h>
  31 #include <linux/moduleparam.h>
  32
  33 #include <linux/isdn/capiutil.h>
  34 #include <linux/isdn/capicmd.h>
  35 #include "capidrv.h"
  36
  37 static char *revision = "$Revision: 1.1.2.2 $";
  38 static int debugmode = 0;
  39
  40 MODULE_DESCRIPTION("CAPI4Linux: Interface to ISDN4Linux");
  41 MODULE_AUTHOR("Carsten Paeth");
  42 MODULE_LICENSE("GPL");
  43 module_param(debugmode, uint, 0);
  44
  45 /* -------- type definitions ----------------------------------------- */
  46
  47
  48 struct capidrv_contr {
  49
  50         struct capidrv_contr *next;
  51         struct module *owner;
  52         u32 contrnr;
  53         char name[20];
  54
  55         /*
  56          * for isdn4linux
  57          */
  58         isdn_if interface;
  59         int myid;
  60
  61         /*
  62          * LISTEN state
  63          */
  64         int state;
  65         u32 cipmask;
  66         u32 cipmask2;
  67         struct timer_list listentimer;
  68
  69         /*
  70          * ID of capi message sent
  71          */
  72         u16 msgid;
  73
  74         /*
  75          * B-Channels
  76          */
  77         int nbchan;
  78         struct capidrv_bchan {
  79                 struct capidrv_contr *contr;
  80                 u8 msn[ISDN_MSNLEN];
  81                 int l2;
  82                 int l3;
  83                 u8 num[ISDN_MSNLEN];
  84                 u8 mynum[ISDN_MSNLEN];
  85                 int si1;
  86                 int si2;
  87                 int incoming;
  88                 int disconnecting;
  89                 struct capidrv_plci {
  90                         struct capidrv_plci *next;
  91                         u32 plci;
  92                         u32 ncci;       /* ncci for CONNECT_ACTIVE_IND */
  93                         u16 msgid;      /* to identfy CONNECT_CONF */
  94                         int chan;
  95                         int state;
  96                         int leasedline;
  97                         struct capidrv_ncci {
  98                                 struct capidrv_ncci *next;
  99                                 struct capidrv_plci *plcip;
 100                                 u32 ncci;
 101                                 u16 msgid;      /* to identfy CONNECT_B3_CONF */
 102                                 int chan;
 103                                 int state;
 104                                 int oldstate;
 105                                 /* */
 106                                 u16 datahandle;
 107                                 struct ncci_datahandle_queue {
 108                                     struct ncci_datahandle_queue *next;
 109                                     u16                         datahandle;
 110                                     int                           len;
 111                                 } *ackqueue;
 112                         } *ncci_list;
 113                 } *plcip;
 114                 struct capidrv_ncci *nccip;
 115         } *bchans;
 116
 117         struct capidrv_plci *plci_list;
 118
 119         /* for q931 data */
 120         u8  q931_buf[4096];
 121         u8 *q931_read;
 122         u8 *q931_write;
 123         u8 *q931_end;
 124 };
 125
 126
 127 struct capidrv_data {
 128         struct capi20_appl ap;
 129         int ncontr;
 130         struct capidrv_contr *contr_list;
 131 };
 132
 133 typedef struct capidrv_plci capidrv_plci;
 134 typedef struct capidrv_ncci capidrv_ncci;
 135 typedef struct capidrv_contr capidrv_contr;
 136 typedef struct capidrv_data capidrv_data;
 137 typedef struct capidrv_bchan capidrv_bchan;
 138
 139 /* -------- data definitions ----------------------------------------- */
 140
 141 static capidrv_data global;
 142 static DEFINE_SPINLOCK(global_lock);
 143
 144 static void handle_dtrace_data(capidrv_contr *card,
 145         int send, int level2, u8 *data, u16 len);
 146
 147 /* -------- convert functions ---------------------------------------- */
 148
 149 static inline u32 b1prot(int l2, int l3)
 150 {
 151         switch (l2) {
 152         case ISDN_PROTO_L2_X75I:
 153         case ISDN_PROTO_L2_X75UI:
 154         case ISDN_PROTO_L2_X75BUI:
 155                 return 0;
 156         case ISDN_PROTO_L2_HDLC:
 157         default:
 158                 return 0;
 159         case ISDN_PROTO_L2_TRANS:
 160                 return 1;
 161         case ISDN_PROTO_L2_V11096:
 162         case ISDN_PROTO_L2_V11019:
 163         case ISDN_PROTO_L2_V11038:
 164                 return 2;
 165         case ISDN_PROTO_L2_FAX:
 166                 return 4;
 167         case ISDN_PROTO_L2_MODEM:
 168                 return 8;
 169         }
 170 }
 171
 172 static inline u32 b2prot(int l2, int l3)
 173 {
 174         switch (l2) {
 175         case ISDN_PROTO_L2_X75I:
 176         case ISDN_PROTO_L2_X75UI:
 177         case ISDN_PROTO_L2_X75BUI:
 178         default:
 179                 return 0;
 180         case ISDN_PROTO_L2_HDLC:
 181         case ISDN_PROTO_L2_TRANS:
 182         case ISDN_PROTO_L2_V11096:
 183         case ISDN_PROTO_L2_V11019:
 184         case ISDN_PROTO_L2_V11038:
 185         case ISDN_PROTO_L2_MODEM:
 186                 return 1;
 187         case ISDN_PROTO_L2_FAX:
 188                 return 4;
 189         }
 190 }
 191
 192 static inline u32 b3prot(int l2, int l3)
 193 {
 194         switch (l2) {
 195         case ISDN_PROTO_L2_X75I:
 196         case ISDN_PROTO_L2_X75UI:
 197         case ISDN_PROTO_L2_X75BUI:
 198         case ISDN_PROTO_L2_HDLC:
 199         case ISDN_PROTO_L2_TRANS:
 200         case ISDN_PROTO_L2_V11096:
 201         case ISDN_PROTO_L2_V11019:
 202         case ISDN_PROTO_L2_V11038:
 203         case ISDN_PROTO_L2_MODEM:
 204         default:
 205                 return 0;
 206         case ISDN_PROTO_L2_FAX:
 207                 return 4;
 208         }
 209 }
 210
 211 static _cstruct b1config_async_v110(u16 rate)
 212 {
 213         /* CAPI-Spec "B1 Configuration" */
 214         static unsigned char buf[9];
 215         buf[0] = 8; /* len */
 216         /* maximum bitrate */
 217         buf[1] = rate & 0xff; buf[2] = (rate >> 8) & 0xff;
 218         buf[3] = 8; buf[4] = 0; /* 8 bits per character */
 219         buf[5] = 0; buf[6] = 0; /* parity none */
 220         buf[7] = 0; buf[8] = 0; /* 1 stop bit */
 221         return buf;
 222 }
 223
 224 static _cstruct b1config(int l2, int l3)
 225 {
 226         switch (l2) {
 227         case ISDN_PROTO_L2_X75I:
 228         case ISDN_PROTO_L2_X75UI:
 229         case ISDN_PROTO_L2_X75BUI:
 230         case ISDN_PROTO_L2_HDLC:
 231         case ISDN_PROTO_L2_TRANS:
 232         default:
 233                 return NULL;
 234         case ISDN_PROTO_L2_V11096:
 235             return b1config_async_v110(9600);
 236         case ISDN_PROTO_L2_V11019:
 237             return b1config_async_v110(19200);
 238         case ISDN_PROTO_L2_V11038:
 239             return b1config_async_v110(38400);
 240         }
 241 }
 242
 243 static inline u16 si2cip(u8 si1, u8 si2)
 244 {
 245         static const u8 cip[17][5] =
 246         {
 247         /*  0  1  2  3  4  */
 248                 {0, 0, 0, 0, 0},        /*0 */
 249                 {16, 16, 4, 26, 16},    /*1 */
 250                 {17, 17, 17, 4, 4},     /*2 */
 251                 {2, 2, 2, 2, 2},        /*3 */
 252                 {18, 18, 18, 18, 18},   /*4 */
 253                 {2, 2, 2, 2, 2},        /*5 */
 254                 {0, 0, 0, 0, 0},        /*6 */
 255                 {2, 2, 2, 2, 2},        /*7 */
 256                 {2, 2, 2, 2, 2},        /*8 */
 257                 {21, 21, 21, 21, 21},   /*9 */
 258                 {19, 19, 19, 19, 19},   /*10 */
 259                 {0, 0, 0, 0, 0},        /*11 */
 260                 {0, 0, 0, 0, 0},        /*12 */
 261                 {0, 0, 0, 0, 0},        /*13 */
 262                 {0, 0, 0, 0, 0},        /*14 */
 263                 {22, 22, 22, 22, 22},   /*15 */
 264                 {27, 27, 27, 28, 27}    /*16 */
 265         };
 266         if (si1 > 16)
 267                 si1 = 0;
 268         if (si2 > 4)
 269                 si2 = 0;
 270
 271         return (u16) cip[si1][si2];
 272 }
 273
 274 static inline u8 cip2si1(u16 cipval)
 275 {
 276         static const u8 si[32] =
 277         {7, 1, 7, 7, 1, 1, 7, 7,        /*0-7 */
 278          7, 1, 0, 0, 0, 0, 0, 0,        /*8-15 */
 279          1, 2, 4, 10, 9, 9, 15, 7,      /*16-23 */
 280          7, 7, 1, 16, 16, 0, 0, 0};     /*24-31 */
 281
 282         if (cipval > 31)
 283                 cipval = 0;     /* .... */
 284         return si[cipval];
 285 }
 286
 287 static inline u8 cip2si2(u16 cipval)
 288 {
 289         static const u8 si[32] =
 290         {0, 0, 0, 0, 2, 3, 0, 0,        /*0-7 */
 291          0, 3, 0, 0, 0, 0, 0, 0,        /*8-15 */
 292          1, 2, 0, 0, 9, 0, 0, 0,        /*16-23 */
 293          0, 0, 3, 2, 3, 0, 0, 0};       /*24-31 */
 294
 295         if (cipval > 31)
 296                 cipval = 0;     /* .... */
 297         return si[cipval];
 298 }
 299
 300
 301 /* -------- controller management ------------------------------------- */
 302
 303 static inline capidrv_contr *findcontrbydriverid(int driverid)
 304 {
 305         unsigned long flags;
 306         capidrv_contr *p;
 307
 308         spin_lock_irqsave(&global_lock, flags);
 309         for (p = global.contr_list; p; p = p->next)
 310                 if (p->myid == driverid)
 311                         break;
 312         spin_unlock_irqrestore(&global_lock, flags);
 313         return p;
 314 }
 315
 316 static capidrv_contr *findcontrbynumber(u32 contr)
 317 {
 318         unsigned long flags;
 319         capidrv_contr *p = global.contr_list;
 320
 321         spin_lock_irqsave(&global_lock, flags);
 322         for (p = global.contr_list; p; p = p->next)
 323                 if (p->contrnr == contr)
 324                         break;
 325         spin_unlock_irqrestore(&global_lock, flags);
 326         return p;
 327 }
 328
 329
 330 /* -------- plci management ------------------------------------------ */
 331
 332 static capidrv_plci *new_plci(capidrv_contr * card, int chan)
 333 {
 334         capidrv_plci *plcip;
 335
 336         plcip = kzalloc(sizeof(capidrv_plci), GFP_ATOMIC);
 337
 338         if (plcip == NULL)
 339                 return NULL;
 340
 341         plcip->state = ST_PLCI_NONE;
 342         plcip->plci = 0;
 343         plcip->msgid = 0;
 344         plcip->chan = chan;
 345         plcip->next = card->plci_list;
 346         card->plci_list = plcip;
 347         card->bchans[chan].plcip = plcip;
 348
 349         return plcip;
 350 }
 351
 352 static capidrv_plci *find_plci_by_plci(capidrv_contr * card, u32 plci)
 353 {
 354         capidrv_plci *p;
 355         for (p = card->plci_list; p; p = p->next)
 356                 if (p->plci == plci)
 357                         return p;
 358         return NULL;
 359 }
 360
 361 static capidrv_plci *find_plci_by_msgid(capidrv_contr * card, u16 msgid)
 362 {
 363         capidrv_plci *p;
 364         for (p = card->plci_list; p; p = p->next)
 365                 if (p->msgid == msgid)
 366                         return p;
 367         return NULL;
 368 }
 369
 370 static capidrv_plci *find_plci_by_ncci(capidrv_contr * card, u32 ncci)
 371 {
 372         capidrv_plci *p;
 373         for (p = card->plci_list; p; p = p->next)
 374                 if (p->plci == (ncci & 0xffff))
 375                         return p;
 376         return NULL;
 377 }
 378
 379 static void free_plci(capidrv_contr * card, capidrv_plci * plcip)
 380 {
 381         capidrv_plci **pp;
 382
 383         for (pp = &card->plci_list; *pp; pp = &(*pp)->next) {
 384                 if (*pp == plcip) {
 385                         *pp = (*pp)->next;
 386                         card->bchans[plcip->chan].plcip = NULL;
 387                         card->bchans[plcip->chan].disconnecting = 0;
 388                         card->bchans[plcip->chan].incoming = 0;
 389                         kfree(plcip);
 390                         return;
 391                 }
 392         }
 393         printk(KERN_ERR "capidrv-%d: free_plci %p (0x%x) not found, Huh?\n",
 394                card->contrnr, plcip, plcip->plci);
 395 }
 396
 397 /* -------- ncci management ------------------------------------------ */
 398
 399 static inline capidrv_ncci *new_ncci(capidrv_contr * card,
 400                                      capidrv_plci * plcip,
 401                                      u32 ncci)
 402 {
 403         capidrv_ncci *nccip;
 404
 405         nccip = kzalloc(sizeof(capidrv_ncci), GFP_ATOMIC);
 406
 407         if (nccip == NULL)
 408                 return NULL;
 409
 410         nccip->ncci = ncci;
 411         nccip->state = ST_NCCI_NONE;
 412         nccip->plcip = plcip;
 413         nccip->chan = plcip->chan;
 414         nccip->datahandle = 0;
 415
 416         nccip->next = plcip->ncci_list;
 417         plcip->ncci_list = nccip;
 418
 419         card->bchans[plcip->chan].nccip = nccip;
 420
 421         return nccip;
 422 }
 423
 424 static inline capidrv_ncci *find_ncci(capidrv_contr * card, u32 ncci)
 425 {
 426         capidrv_plci *plcip;
 427         capidrv_ncci *p;
 428
 429         if ((plcip = find_plci_by_ncci(card, ncci)) == NULL)
 430                 return NULL;
 431
 432         for (p = plcip->ncci_list; p; p = p->next)
 433                 if (p->ncci == ncci)
 434                         return p;
 435         return NULL;
 436 }
 437
 438 static inline capidrv_ncci *find_ncci_by_msgid(capidrv_contr * card,
 439                                                u32 ncci, u16 msgid)
 440 {
 441         capidrv_plci *plcip;
 442         capidrv_ncci *p;
 443
 444         if ((plcip = find_plci_by_ncci(card, ncci)) == NULL)
 445                 return NULL;
 446
 447         for (p = plcip->ncci_list; p; p = p->next)
 448                 if (p->msgid == msgid)
 449                         return p;
 450         return NULL;
 451 }
 452
 453 static void free_ncci(capidrv_contr * card, struct capidrv_ncci *nccip)
 454 {
 455         struct capidrv_ncci **pp;
 456
 457         for (pp = &(nccip->plcip->ncci_list); *pp; pp = &(*pp)->next) {
 458                 if (*pp == nccip) {
 459                         *pp = (*pp)->next;
 460                         break;
 461                 }
 462         }
 463         card->bchans[nccip->chan].nccip = NULL;
 464         kfree(nccip);
 465 }
 466
 467 static int capidrv_add_ack(struct capidrv_ncci *nccip,
 468                            u16 datahandle, int len)
 469 {
 470         struct ncci_datahandle_queue *n, **pp;
 471
 472         n = (struct ncci_datahandle_queue *)
 473                 kmalloc(sizeof(struct ncci_datahandle_queue), GFP_ATOMIC);
 474         if (!n) {
 475            printk(KERN_ERR "capidrv: kmalloc ncci_datahandle failed\n");
 476            return -1;
 477         }
 478         n->next = NULL;
 479         n->datahandle = datahandle;
 480         n->len = len;
 481         for (pp = &nccip->ackqueue; *pp; pp = &(*pp)->next) ;
 482         *pp = n;
 483         return 0;
 484 }
 485
 486 static int capidrv_del_ack(struct capidrv_ncci *nccip, u16 datahandle)
 487 {
 488         struct ncci_datahandle_queue **pp, *p;
 489         int len;
 490
 491         for (pp = &nccip->ackqueue; *pp; pp = &(*pp)->next) {
 492                 if ((*pp)->datahandle == datahandle) {
 493                         p = *pp;
 494                         len = p->len;
 495                         *pp = (*pp)->next;
 496                         kfree(p);
 497                         return len;
 498                 }
 499         }
 500         return -1;
 501 }
 502
 503 /* -------- convert and send capi message ---------------------------- */
 504
 505 static void send_message(capidrv_contr * card, _cmsg * cmsg)
 506 {
 507         struct sk_buff *skb;
 508         size_t len;
 509
 510         capi_cmsg2message(cmsg, cmsg->buf);
 511         len = CAPIMSG_LEN(cmsg->buf);
 512         skb = alloc_skb(len, GFP_ATOMIC);
 513         if (!skb) {
 514                 printk(KERN_ERR "capidrv::send_message: can't allocate mem\n");
 515                 return;
 516         }
 517         memcpy(skb_put(skb, len), cmsg->buf, len);
 518         if (capi20_put_message(&global.ap, skb) != CAPI_NOERROR)
 519                 kfree_skb(skb);
 520 }
 521
 522 /* -------- state machine -------------------------------------------- */
 523
 524 struct listenstatechange {
 525         int actstate;
 526         int nextstate;
 527         int event;
 528 };
 529
 530 static struct listenstatechange listentable[] =
 531 {
 532   {ST_LISTEN_NONE, ST_LISTEN_WAIT_CONF, EV_LISTEN_REQ},
 533   {ST_LISTEN_ACTIVE, ST_LISTEN_ACTIVE_WAIT_CONF, EV_LISTEN_REQ},
 534   {ST_LISTEN_WAIT_CONF, ST_LISTEN_NONE, EV_LISTEN_CONF_ERROR},
 535   {ST_LISTEN_ACTIVE_WAIT_CONF, ST_LISTEN_ACTIVE, EV_LISTEN_CONF_ERROR},
 536   {ST_LISTEN_WAIT_CONF, ST_LISTEN_NONE, EV_LISTEN_CONF_EMPTY},
 537   {ST_LISTEN_ACTIVE_WAIT_CONF, ST_LISTEN_NONE, EV_LISTEN_CONF_EMPTY},
 538   {ST_LISTEN_WAIT_CONF, ST_LISTEN_ACTIVE, EV_LISTEN_CONF_OK},
 539   {ST_LISTEN_ACTIVE_WAIT_CONF, ST_LISTEN_ACTIVE, EV_LISTEN_CONF_OK},
 540   {},
 541 };
 542
 543 static void listen_change_state(capidrv_contr * card, int event)
 544 {
 545         struct listenstatechange *p = listentable;
 546         while (p->event) {
 547                 if (card->state == p->actstate && p->event == event) {
 548                         if (debugmode)
 549                                 printk(KERN_DEBUG "capidrv-%d: listen_change_state %d -> %d\n",
 550                                        card->contrnr, card->state, p->nextstate);
 551                         card->state = p->nextstate;
 552                         return;
 553                 }
 554                 p++;
 555         }
 556         printk(KERN_ERR "capidrv-%d: listen_change_state state=%d event=%d ????\n",
 557                card->contrnr, card->state, event);
 558
 559 }
 560
 561 /* ------------------------------------------------------------------ */
 562
 563 static void p0(capidrv_contr * card, capidrv_plci * plci)
 564 {
 565         isdn_ctrl cmd;
 566
 567         card->bchans[plci->chan].contr = NULL;
 568         cmd.command = ISDN_STAT_DHUP;
 569         cmd.driver = card->myid;
 570         cmd.arg = plci->chan;
 571         card->interface.statcallb(&cmd);
 572         free_plci(card, plci);
 573 }
 574
 575 /* ------------------------------------------------------------------ */
 576
 577 struct plcistatechange {
 578         int actstate;
 579         int nextstate;
 580         int event;
 581         void (*changefunc) (capidrv_contr * card, capidrv_plci * plci);
 582 };
 583
 584 static struct plcistatechange plcitable[] =
 585 {
 586   /* P-0 */
 587   {ST_PLCI_NONE, ST_PLCI_OUTGOING, EV_PLCI_CONNECT_REQ, NULL},
 588   {ST_PLCI_NONE, ST_PLCI_ALLOCATED, EV_PLCI_FACILITY_IND_UP, NULL},
 589   {ST_PLCI_NONE, ST_PLCI_INCOMING, EV_PLCI_CONNECT_IND, NULL},
 590   {ST_PLCI_NONE, ST_PLCI_RESUMEING, EV_PLCI_RESUME_REQ, NULL},
 591   /* P-0.1 */
 592   {ST_PLCI_OUTGOING, ST_PLCI_NONE, EV_PLCI_CONNECT_CONF_ERROR, p0},
 593   {ST_PLCI_OUTGOING, ST_PLCI_ALLOCATED, EV_PLCI_CONNECT_CONF_OK, NULL},
 594   /* P-1 */
 595   {ST_PLCI_ALLOCATED, ST_PLCI_ACTIVE, EV_PLCI_CONNECT_ACTIVE_IND, NULL},
 596   {ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
 597   {ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
 598   {ST_PLCI_ALLOCATED, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
 599   /* P-ACT */
 600   {ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
 601   {ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
 602   {ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
 603   {ST_PLCI_ACTIVE, ST_PLCI_HELD, EV_PLCI_HOLD_IND, NULL},
 604   {ST_PLCI_ACTIVE, ST_PLCI_DISCONNECTING, EV_PLCI_SUSPEND_IND, NULL},
 605   /* P-2 */
 606   {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_CONNECT_REJECT, NULL},
 607   {ST_PLCI_INCOMING, ST_PLCI_FACILITY_IND, EV_PLCI_FACILITY_IND_UP, NULL},
 608   {ST_PLCI_INCOMING, ST_PLCI_ACCEPTING, EV_PLCI_CONNECT_RESP, NULL},
 609   {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
 610   {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
 611   {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
 612   {ST_PLCI_INCOMING, ST_PLCI_DISCONNECTING, EV_PLCI_CD_IND, NULL},
 613   /* P-3 */
 614   {ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_CONNECT_REJECT, NULL},
 615   {ST_PLCI_FACILITY_IND, ST_PLCI_ACCEPTING, EV_PLCI_CONNECT_ACTIVE_IND, NULL},
 616   {ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
 617   {ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
 618   {ST_PLCI_FACILITY_IND, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
 619   /* P-4 */
 620   {ST_PLCI_ACCEPTING, ST_PLCI_ACTIVE, EV_PLCI_CONNECT_ACTIVE_IND, NULL},
 621   {ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTING, EV_PLCI_DISCONNECT_REQ, NULL},
 622   {ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTING, EV_PLCI_FACILITY_IND_DOWN, NULL},
 623   {ST_PLCI_ACCEPTING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
 624   /* P-5 */
 625   {ST_PLCI_DISCONNECTING, ST_PLCI_DISCONNECTED, EV_PLCI_DISCONNECT_IND, NULL},
 626   /* P-6 */
 627   {ST_PLCI_DISCONNECTED, ST_PLCI_NONE, EV_PLCI_DISCONNECT_RESP, p0},
 628   /* P-0.Res */
 629   {ST_PLCI_RESUMEING, ST_PLCI_NONE, EV_PLCI_RESUME_CONF_ERROR, p0},
 630   {ST_PLCI_RESUMEING, ST_PLCI_RESUME, EV_PLCI_RESUME_CONF_OK, NULL},
 631   /* P-RES */
 632   {ST_PLCI_RESUME, ST_PLCI_ACTIVE, EV_PLCI_RESUME_IND, NULL},
 633   /* P-HELD */
 634   {ST_PLCI_HELD, ST_PLCI_ACTIVE, EV_PLCI_RETRIEVE_IND, NULL},
 635   {},
 636 };
 637
 638 static void plci_change_state(capidrv_contr * card, capidrv_plci * plci, int event)
 639 {
 640         struct plcistatechange *p = plcitable;
 641         while (p->event) {
 642                 if (plci->state == p->actstate && p->event == event) {
 643                         if (debugmode)
 644                                 printk(KERN_DEBUG "capidrv-%d: plci_change_state:0x%x %d -> %d\n",
 645                                   card->contrnr, plci->plci, plci->state, p->nextstate);
 646                         plci->state = p->nextstate;
 647                         if (p->changefunc)
 648                                 p->changefunc(card, plci);
 649                         return;
 650                 }
 651                 p++;
 652         }
 653         printk(KERN_ERR "capidrv-%d: plci_change_state:0x%x state=%d event=%d ????\n",
 654                card->contrnr, plci->plci, plci->state, event);
 655 }
 656
 657 /* ------------------------------------------------------------------ */
 658
 659 static _cmsg cmsg;
 660
 661 static void n0(capidrv_contr * card, capidrv_ncci * ncci)
 662 {
 663         isdn_ctrl cmd;
 664
 665         capi_fill_DISCONNECT_REQ(&cmsg,
 666                                  global.ap.applid,
 667                                  card->msgid++,
 668                                  ncci->plcip->plci,
 669                                  NULL,  /* BChannelinformation */
 670                                  NULL,  /* Keypadfacility */
 671                                  NULL,  /* Useruserdata */   /* $$$$ */
 672                                  NULL   /* Facilitydataarray */
 673         );
 674         send_message(card, &cmsg);
 675         plci_change_state(card, ncci->plcip, EV_PLCI_DISCONNECT_REQ);
 676
 677         cmd.command = ISDN_STAT_BHUP;
 678         cmd.driver = card->myid;
 679         cmd.arg = ncci->chan;
 680         card->interface.statcallb(&cmd);
 681         free_ncci(card, ncci);
 682 }
 683
 684 /* ------------------------------------------------------------------ */
 685
 686 struct nccistatechange {
 687         int actstate;
 688         int nextstate;
 689         int event;
 690         void (*changefunc) (capidrv_contr * card, capidrv_ncci * ncci);
 691 };
 692
 693 static struct nccistatechange nccitable[] =
 694 {
 695   /* N-0 */
 696   {ST_NCCI_NONE, ST_NCCI_OUTGOING, EV_NCCI_CONNECT_B3_REQ, NULL},
 697   {ST_NCCI_NONE, ST_NCCI_INCOMING, EV_NCCI_CONNECT_B3_IND, NULL},
 698   /* N-0.1 */
 699   {ST_NCCI_OUTGOING, ST_NCCI_ALLOCATED, EV_NCCI_CONNECT_B3_CONF_OK, NULL},
 700   {ST_NCCI_OUTGOING, ST_NCCI_NONE, EV_NCCI_CONNECT_B3_CONF_ERROR, n0},
 701   /* N-1 */
 702   {ST_NCCI_INCOMING, ST_NCCI_DISCONNECTING, EV_NCCI_CONNECT_B3_REJECT, NULL},
 703   {ST_NCCI_INCOMING, ST_NCCI_ALLOCATED, EV_NCCI_CONNECT_B3_RESP, NULL},
 704   {ST_NCCI_INCOMING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
 705   {ST_NCCI_INCOMING, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
 706   /* N-2 */
 707   {ST_NCCI_ALLOCATED, ST_NCCI_ACTIVE, EV_NCCI_CONNECT_B3_ACTIVE_IND, NULL},
 708   {ST_NCCI_ALLOCATED, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
 709   {ST_NCCI_ALLOCATED, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
 710   /* N-ACT */
 711   {ST_NCCI_ACTIVE, ST_NCCI_ACTIVE, EV_NCCI_RESET_B3_IND, NULL},
 712   {ST_NCCI_ACTIVE, ST_NCCI_RESETING, EV_NCCI_RESET_B3_REQ, NULL},
 713   {ST_NCCI_ACTIVE, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
 714   {ST_NCCI_ACTIVE, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
 715   /* N-3 */
 716   {ST_NCCI_RESETING, ST_NCCI_ACTIVE, EV_NCCI_RESET_B3_IND, NULL},
 717   {ST_NCCI_RESETING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
 718   {ST_NCCI_RESETING, ST_NCCI_DISCONNECTING, EV_NCCI_DISCONNECT_B3_REQ, NULL},
 719   /* N-4 */
 720   {ST_NCCI_DISCONNECTING, ST_NCCI_DISCONNECTED, EV_NCCI_DISCONNECT_B3_IND, NULL},
 721   {ST_NCCI_DISCONNECTING, ST_NCCI_PREVIOUS, EV_NCCI_DISCONNECT_B3_CONF_ERROR,NULL},
 722   /* N-5 */
 723   {ST_NCCI_DISCONNECTED, ST_NCCI_NONE, EV_NCCI_DISCONNECT_B3_RESP, n0},
 724   {},
 725 };
 726
 727 static void ncci_change_state(capidrv_contr * card, capidrv_ncci * ncci, int event)
 728 {
 729         struct nccistatechange *p = nccitable;
 730         while (p->event) {
 731                 if (ncci->state == p->actstate && p->event == event) {
 732                         if (debugmode)
 733                                 printk(KERN_DEBUG "capidrv-%d: ncci_change_state:0x%x %d -> %d\n",
 734                                   card->contrnr, ncci->ncci, ncci->state, p->nextstate);
 735                         if (p->nextstate == ST_NCCI_PREVIOUS) {
 736                                 ncci->state = ncci->oldstate;
 737                                 ncci->oldstate = p->actstate;
 738                         } else {
 739                                 ncci->oldstate = p->actstate;
 740                                 ncci->state = p->nextstate;
 741                         }
 742                         if (p->changefunc)
 743                                 p->changefunc(card, ncci);
 744                         return;
 745                 }
 746                 p++;
 747         }
 748         printk(KERN_ERR "capidrv-%d: ncci_change_state:0x%x state=%d event=%d ????\n",
 749                card->contrnr, ncci->ncci, ncci->state, event);
 750 }
 751
 752 /* ------------------------------------------------------------------- */
 753
 754 static inline int new_bchan(capidrv_contr * card)
 755 {
 756         int i;
 757         for (i = 0; i < card->nbchan; i++) {
 758                 if (card->bchans[i].plcip == NULL) {
 759                         card->bchans[i].disconnecting = 0;
 760                         return i;
 761                 }
 762         }
 763         return -1;
 764 }
 765
 766 /* ------------------------------------------------------------------- */
 767
 768 static void handle_controller(_cmsg * cmsg)
 769 {
 770         capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
 771
 772         if (!card) {
 773                 printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
 774                        capi_cmd2str(cmsg->Command, cmsg->Subcommand),
 775                        cmsg->adr.adrController & 0x7f);
 776                 return;
 777         }
 778         switch (CAPICMD(cmsg->Command, cmsg->Subcommand)) {
 779
 780         case CAPI_LISTEN_CONF:  /* Controller */
 781                 if (debugmode)
 782                         printk(KERN_DEBUG "capidrv-%d: listenconf Info=0x%4x (%s) cipmask=0x%x\n",
 783                                card->contrnr, cmsg->Info, capi_info2str(cmsg->Info), card->cipmask);
 784                 if (cmsg->Info) {
 785                         listen_change_state(card, EV_LISTEN_CONF_ERROR);
 786                 } else if (card->cipmask == 0) {
 787                         listen_change_state(card, EV_LISTEN_CONF_EMPTY);
 788                 } else {
 789                         listen_change_state(card, EV_LISTEN_CONF_OK);
 790                 }
 791                 break;
 792
 793         case CAPI_MANUFACTURER_IND:     /* Controller */
 794                 if (   cmsg->ManuID == 0x214D5641
 795                     && cmsg->Class == 0
 796                     && cmsg->Function == 1) {
 797                    u8  *data = cmsg->ManuData+3;
 798                    u16  len = cmsg->ManuData[0];
 799                    u16 layer;
 800                    int direction;
 801                    if (len == 255) {
 802                       len = (cmsg->ManuData[1] | (cmsg->ManuData[2] << 8));
 803                       data += 2;
 804                    }
 805                    len -= 2;
 806                    layer = ((*(data-1)) << 8) | *(data-2);
 807                    if (layer & 0x300)
 808                         direction = (layer & 0x200) ? 0 : 1;
 809                    else direction = (layer & 0x800) ? 0 : 1;
 810                    if (layer & 0x0C00) {
 811                         if ((layer & 0xff) == 0x80) {
 812                            handle_dtrace_data(card, direction, 1, data, len);
 813                            break;
 814                         }
 815                    } else if ((layer & 0xff) < 0x80) {
 816                       handle_dtrace_data(card, direction, 0, data, len);
 817                       break;
 818                    }
 819                    printk(KERN_INFO "capidrv-%d: %s from controller 0x%x layer 0x%x, ignored\n",
 820                         card->contrnr,
 821                         capi_cmd2str(cmsg->Command, cmsg->Subcommand),
 822                         cmsg->adr.adrController, layer);
 823                    break;
 824                 }
 825                 goto ignored;
 826         case CAPI_MANUFACTURER_CONF:    /* Controller */
 827                 if (cmsg->ManuID == 0x214D5641) {
 828                    char *s = NULL;
 829                    switch (cmsg->Class) {
 830                       case 0: break;
 831                       case 1: s = "unknown class"; break;
 832                       case 2: s = "unknown function"; break;
 833                       default: s = "unkown error"; break;
 834                    }
 835                    if (s)
 836                    printk(KERN_INFO "capidrv-%d: %s from controller 0x%x function %d: %s\n",
 837                         card->contrnr,
 838                         capi_cmd2str(cmsg->Command, cmsg->Subcommand),
 839                         cmsg->adr.adrController,
 840                         cmsg->Function, s);
 841                    break;
 842                 }
 843                 goto ignored;
 844         case CAPI_FACILITY_IND: /* Controller/plci/ncci */
 845                 goto ignored;
 846         case CAPI_FACILITY_CONF:        /* Controller/plci/ncci */
 847                 goto ignored;
 848         case CAPI_INFO_IND:     /* Controller/plci */
 849                 goto ignored;
 850         case CAPI_INFO_CONF:    /* Controller/plci */
 851                 goto ignored;
 852
 853         default:
 854                 printk(KERN_ERR "capidrv-%d: got %s from controller 0x%x ???",
 855                        card->contrnr,
 856                        capi_cmd2str(cmsg->Command, cmsg->Subcommand),
 857                        cmsg->adr.adrController);
 858         }
 859         return;
 860
 861       ignored:
 862         printk(KERN_INFO "capidrv-%d: %s from controller 0x%x ignored\n",
 863                card->contrnr,
 864                capi_cmd2str(cmsg->Command, cmsg->Subcommand),
 865                cmsg->adr.adrController);
 866 }
 867
 868 static void handle_incoming_call(capidrv_contr * card, _cmsg * cmsg)
 869 {
 870         capidrv_plci *plcip;
 871         capidrv_bchan *bchan;
 872         isdn_ctrl cmd;
 873         int chan;
 874
 875         if ((chan = new_bchan(card)) == -1) {
 876                 printk(KERN_ERR "capidrv-%d: incoming call on not existing bchan ?\n", card->contrnr);
 877                 return;
 878         }
 879         bchan = &card->bchans[chan];
 880         if ((plcip = new_plci(card, chan)) == NULL) {
 881                 printk(KERN_ERR "capidrv-%d: incoming call: no memory, sorry.\n", card->contrnr);
 882                 return;
 883         }
 884         bchan->incoming = 1;
 885         plcip->plci = cmsg->adr.adrPLCI;
 886         plci_change_state(card, plcip, EV_PLCI_CONNECT_IND);
 887
 888         cmd.command = ISDN_STAT_ICALL;
 889         cmd.driver = card->myid;
 890         cmd.arg = chan;
 891         memset(&cmd.parm.setup, 0, sizeof(cmd.parm.setup));
 892         strncpy(cmd.parm.setup.phone,
 893                 cmsg->CallingPartyNumber + 3,
 894                 cmsg->CallingPartyNumber[0] - 2);
 895         strncpy(cmd.parm.setup.eazmsn,
 896                 cmsg->CalledPartyNumber + 2,
 897                 cmsg->CalledPartyNumber[0] - 1);
 898         cmd.parm.setup.si1 = cip2si1(cmsg->CIPValue);
 899         cmd.parm.setup.si2 = cip2si2(cmsg->CIPValue);
 900         cmd.parm.setup.plan = cmsg->CallingPartyNumber[1];
 901         cmd.parm.setup.screen = cmsg->CallingPartyNumber[2];
 902
 903         printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s\n",
 904                         card->contrnr,
 905                         cmd.parm.setup.phone,
 906                         cmd.parm.setup.si1,
 907                         cmd.parm.setup.si2,
 908                         cmd.parm.setup.eazmsn);
 909
 910         if (cmd.parm.setup.si1 == 1 && cmd.parm.setup.si2 != 0) {
 911                 printk(KERN_INFO "capidrv-%d: patching si2=%d to 0 for VBOX\n",
 912                         card->contrnr,
 913                         cmd.parm.setup.si2);
 914                 cmd.parm.setup.si2 = 0;
 915         }
 916
 917         switch (card->interface.statcallb(&cmd)) {
 918         case 0:
 919         case 3:
 920                 /* No device matching this call.
 921                  * and isdn_common.c has send a HANGUP command
 922                  * which is ignored in state ST_PLCI_INCOMING,
 923                  * so we send RESP to ignore the call
 924                  */
 925                 capi_cmsg_answer(cmsg);
 926                 cmsg->Reject = 1;       /* ignore */
 927                 send_message(card, cmsg);
 928                 plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
 929                 printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s ignored\n",
 930                         card->contrnr,
 931                         cmd.parm.setup.phone,
 932                         cmd.parm.setup.si1,
 933                         cmd.parm.setup.si2,
 934                         cmd.parm.setup.eazmsn);
 935                 break;
 936         case 1:
 937                 /* At least one device matching this call (RING on ttyI)
 938                  * HL-driver may send ALERTING on the D-channel in this
 939                  * case.
 940                  * really means: RING on ttyI or a net interface
 941                  * accepted this call already.
 942                  *
 943                  * If the call was accepted, state has already changed,
 944                  * and CONNECT_RESP already sent.
 945                  */
 946                 if (plcip->state == ST_PLCI_INCOMING) {
 947                         printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s tty alerting\n",
 948                                 card->contrnr,
 949                                 cmd.parm.setup.phone,
 950                                 cmd.parm.setup.si1,
 951                                 cmd.parm.setup.si2,
 952                                 cmd.parm.setup.eazmsn);
 953                         capi_fill_ALERT_REQ(cmsg,
 954                                             global.ap.applid,
 955                                             card->msgid++,
 956                                             plcip->plci,        /* adr */
 957                                             NULL,/* BChannelinformation */
 958                                             NULL,/* Keypadfacility */
 959                                             NULL,/* Useruserdata */
 960                                             NULL /* Facilitydataarray */
 961                         );
 962                         plcip->msgid = cmsg->Messagenumber;
 963                         send_message(card, cmsg);
 964                 } else {
 965                         printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s on netdev\n",
 966                                 card->contrnr,
 967                                 cmd.parm.setup.phone,
 968                                 cmd.parm.setup.si1,
 969                                 cmd.parm.setup.si2,
 970                                 cmd.parm.setup.eazmsn);
 971                 }
 972                 break;
 973
 974         case 2:         /* Call will be rejected. */
 975                 capi_cmsg_answer(cmsg);
 976                 cmsg->Reject = 2;       /* reject call, normal call clearing */
 977                 send_message(card, cmsg);
 978                 plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
 979                 break;
 980
 981         default:
 982                 /* An error happened. (Invalid parameters for example.) */
 983                 capi_cmsg_answer(cmsg);
 984                 cmsg->Reject = 8;       /* reject call,
 985                                            destination out of order */
 986                 send_message(card, cmsg);
 987                 plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT);
 988                 break;
 989         }
 990         return;
 991 }
 992
 993 static void handle_plci(_cmsg * cmsg)
 994 {
 995         capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
 996         capidrv_plci *plcip;
 997         isdn_ctrl cmd;
 998         _cdebbuf *cdb;
 999
1000         if (!card) {
1001                 printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
1002                        capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1003                        cmsg->adr.adrController & 0x7f);
1004                 return;
1005         }
1006         switch (CAPICMD(cmsg->Command, cmsg->Subcommand)) {
1007
1008         case CAPI_DISCONNECT_IND:       /* plci */
1009                 if (cmsg->Reason) {
1010                         printk(KERN_INFO "capidrv-%d: %s reason 0x%x (%s) for plci 0x%x\n",
1011                            card->contrnr,
1012                            capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1013                                cmsg->Reason, capi_info2str(cmsg->Reason), cmsg->adr.adrPLCI);
1014                 }
1015                 if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI))) {
1016                         capi_cmsg_answer(cmsg);
1017                         send_message(card, cmsg);
1018                         goto notfound;
1019                 }
1020                 card->bchans[plcip->chan].disconnecting = 1;
1021                 plci_change_state(card, plcip, EV_PLCI_DISCONNECT_IND);
1022                 capi_cmsg_answer(cmsg);
1023                 send_message(card, cmsg);
1024                 plci_change_state(card, plcip, EV_PLCI_DISCONNECT_RESP);
1025                 break;
1026
1027         case CAPI_DISCONNECT_CONF:      /* plci */
1028                 if (cmsg->Info) {
1029                         printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for plci 0x%x\n",
1030                            card->contrnr,
1031                            capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1032                                cmsg->Info, capi_info2str(cmsg->Info),
1033                                cmsg->adr.adrPLCI);
1034                 }
1035                 if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI)))
1036                         goto notfound;
1037
1038                 card->bchans[plcip->chan].disconnecting = 1;
1039                 break;
1040
1041         case CAPI_ALERT_CONF:   /* plci */
1042                 if (cmsg->Info) {
1043                         printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for plci 0x%x\n",
1044                            card->contrnr,
1045                            capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1046                                cmsg->Info, capi_info2str(cmsg->Info),
1047                                cmsg->adr.adrPLCI);
1048                 }
1049                 break;
1050
1051         case CAPI_CONNECT_IND:  /* plci */
1052                 handle_incoming_call(card, cmsg);
1053                 break;
1054
1055         case CAPI_CONNECT_CONF: /* plci */
1056                 if (cmsg->Info) {
1057                         printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for plci 0x%x\n",
1058                            card->contrnr,
1059                            capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1060                                cmsg->Info, capi_info2str(cmsg->Info),
1061                                cmsg->adr.adrPLCI);
1062                 }
1063                 if (!(plcip = find_plci_by_msgid(card, cmsg->Messagenumber)))
1064                         goto notfound;
1065
1066                 plcip->plci = cmsg->adr.adrPLCI;
1067                 if (cmsg->Info) {
1068                         plci_change_state(card, plcip, EV_PLCI_CONNECT_CONF_ERROR);
1069                 } else {
1070                         plci_change_state(card, plcip, EV_PLCI_CONNECT_CONF_OK);
1071                 }
1072                 break;
1073
1074         case CAPI_CONNECT_ACTIVE_IND:   /* plci */
1075
1076                 if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI)))
1077                         goto notfound;
1078
1079                 if (card->bchans[plcip->chan].incoming) {
1080                         capi_cmsg_answer(cmsg);
1081                         send_message(card, cmsg);
1082                         plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND);
1083                 } else {
1084                         capidrv_ncci *nccip;
1085                         capi_cmsg_answer(cmsg);
1086                         send_message(card, cmsg);
1087
1088                         nccip = new_ncci(card, plcip, cmsg->adr.adrPLCI);
1089
1090                         if (!nccip) {
1091                                 printk(KERN_ERR "capidrv-%d: no mem for ncci, sorry\n", card->contrnr);
1092                                 break;  /* $$$$ */
1093                         }
1094                         capi_fill_CONNECT_B3_REQ(cmsg,
1095                                                  global.ap.applid,
1096                                                  card->msgid++,
1097                                                  plcip->plci,   /* adr */
1098                                                  NULL   /* NCPI */
1099                         );
1100                         nccip->msgid = cmsg->Messagenumber;
1101                         send_message(card, cmsg);
1102                         cmd.command = ISDN_STAT_DCONN;
1103                         cmd.driver = card->myid;
1104                         cmd.arg = plcip->chan;
1105                         card->interface.statcallb(&cmd);
1106                         plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND);
1107                         ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_REQ);
1108                 }
1109                 break;
1110
1111         case CAPI_INFO_IND:     /* Controller/plci */
1112
1113                 if (!(plcip = find_plci_by_plci(card, cmsg->adr.adrPLCI)))
1114                         goto notfound;
1115
1116                 if (cmsg->InfoNumber == 0x4000) {
1117                         if (cmsg->InfoElement[0] == 4) {
1118                                 cmd.command = ISDN_STAT_CINF;
1119                                 cmd.driver = card->myid;
1120                                 cmd.arg = plcip->chan;
1121                                 sprintf(cmd.parm.num, "%lu",
1122                                         (unsigned long)
1123                                         ((u32) cmsg->InfoElement[1]
1124                                   | ((u32) (cmsg->InfoElement[2]) << 8)
1125                                  | ((u32) (cmsg->InfoElement[3]) << 16)
1126                                          | ((u32) (cmsg->InfoElement[4]) << 24)));
1127                                 card->interface.statcallb(&cmd);
1128                                 break;
1129                         }
1130                 }
1131                 cdb = capi_cmsg2str(cmsg);
1132                 if (cdb) {
1133                         printk(KERN_WARNING "capidrv-%d: %s\n",
1134                                 card->contrnr, cdb->buf);
1135                         cdebbuf_free(cdb);
1136                 } else
1137                         printk(KERN_WARNING "capidrv-%d: CAPI_INFO_IND InfoNumber %x not handled\n",
1138                                 card->contrnr, cmsg->InfoNumber);
1139
1140                 break;
1141
1142         case CAPI_CONNECT_ACTIVE_CONF:          /* plci */
1143                 goto ignored;
1144         case CAPI_SELECT_B_PROTOCOL_CONF:       /* plci */
1145                 goto ignored;
1146         case CAPI_FACILITY_IND: /* Controller/plci/ncci */
1147                 goto ignored;
1148         case CAPI_FACILITY_CONF:        /* Controller/plci/ncci */
1149                 goto ignored;
1150
1151         case CAPI_INFO_CONF:    /* Controller/plci */
1152                 goto ignored;
1153
1154         default:
1155                 printk(KERN_ERR "capidrv-%d: got %s for plci 0x%x ???",
1156                        card->contrnr,
1157                        capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1158                        cmsg->adr.adrPLCI);
1159         }
1160         return;
1161       ignored:
1162         printk(KERN_INFO "capidrv-%d: %s for plci 0x%x ignored\n",
1163                card->contrnr,
1164                capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1165                cmsg->adr.adrPLCI);
1166         return;
1167       notfound:
1168         printk(KERN_ERR "capidrv-%d: %s: plci 0x%x not found\n",
1169                card->contrnr,
1170                capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1171                cmsg->adr.adrPLCI);
1172         return;
1173 }
1174
1175 static void handle_ncci(_cmsg * cmsg)
1176 {
1177         capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
1178         capidrv_plci *plcip;
1179         capidrv_ncci *nccip;
1180         isdn_ctrl cmd;
1181         int len;
1182
1183         if (!card) {
1184                 printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
1185                        capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1186                        cmsg->adr.adrController & 0x7f);
1187                 return;
1188         }
1189         switch (CAPICMD(cmsg->Command, cmsg->Subcommand)) {
1190
1191         case CAPI_CONNECT_B3_ACTIVE_IND:        /* ncci */
1192                 if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
1193                         goto notfound;
1194
1195                 capi_cmsg_answer(cmsg);
1196                 send_message(card, cmsg);
1197                 ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_ACTIVE_IND);
1198
1199                 cmd.command = ISDN_STAT_BCONN;
1200                 cmd.driver = card->myid;
1201                 cmd.arg = nccip->chan;
1202                 card->interface.statcallb(&cmd);
1203
1204                 printk(KERN_INFO "capidrv-%d: chan %d up with ncci 0x%x\n",
1205                        card->contrnr, nccip->chan, nccip->ncci);
1206                 break;
1207
1208         case CAPI_CONNECT_B3_ACTIVE_CONF:       /* ncci */
1209                 goto ignored;
1210
1211         case CAPI_CONNECT_B3_IND:       /* ncci */
1212
1213                 plcip = find_plci_by_ncci(card, cmsg->adr.adrNCCI);
1214                 if (plcip) {
1215                         nccip = new_ncci(card, plcip, cmsg->adr.adrNCCI);
1216                         if (nccip) {
1217                                 ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_IND);
1218                                 capi_fill_CONNECT_B3_RESP(cmsg,
1219                                                           global.ap.applid,
1220                                                           card->msgid++,
1221                                                           nccip->ncci,  /* adr */
1222                                                           0,    /* Reject */
1223                                                           NULL  /* NCPI */
1224                                 );
1225                                 send_message(card, cmsg);
1226                                 ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_RESP);
1227                                 break;
1228                         }
1229                         printk(KERN_ERR "capidrv-%d: no mem for ncci, sorry\n",                                                 card->contrnr);
1230                 } else {
1231                         printk(KERN_ERR "capidrv-%d: %s: plci for ncci 0x%x not found\n",
1232                            card->contrnr,
1233                            capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1234                                cmsg->adr.adrNCCI);
1235                 }
1236                 capi_fill_CONNECT_B3_RESP(cmsg,
1237                                           global.ap.applid,
1238                                           card->msgid++,
1239                                           cmsg->adr.adrNCCI,
1240                                           2,    /* Reject */
1241                                           NULL  /* NCPI */
1242                 );
1243                 send_message(card, cmsg);
1244                 break;
1245
1246         case CAPI_CONNECT_B3_CONF:      /* ncci */
1247
1248                 if (!(nccip = find_ncci_by_msgid(card,
1249                                                  cmsg->adr.adrNCCI,
1250                                                  cmsg->Messagenumber)))
1251                         goto notfound;
1252
1253                 nccip->ncci = cmsg->adr.adrNCCI;
1254                 if (cmsg->Info) {
1255                         printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for ncci 0x%x\n",
1256                            card->contrnr,
1257                            capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1258                                cmsg->Info, capi_info2str(cmsg->Info),
1259                                cmsg->adr.adrNCCI);
1260                 }
1261
1262                 if (cmsg->Info)
1263                         ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_CONF_ERROR);
1264                 else
1265                         ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_CONF_OK);
1266                 break;
1267
1268         case CAPI_CONNECT_B3_T90_ACTIVE_IND:    /* ncci */
1269                 capi_cmsg_answer(cmsg);
1270                 send_message(card, cmsg);
1271                 break;
1272
1273         case CAPI_DATA_B3_IND:  /* ncci */
1274                 /* handled in handle_data() */
1275                 goto ignored;
1276
1277         case CAPI_DATA_B3_CONF: /* ncci */
1278                 if (cmsg->Info) {
1279                         printk(KERN_WARNING "CAPI_DATA_B3_CONF: Info %x - %s\n",
1280                                 cmsg->Info, capi_info2str(cmsg->Info));
1281                 }
1282                 if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
1283                         goto notfound;
1284
1285                 len = capidrv_del_ack(nccip, cmsg->DataHandle);
1286                 if (len < 0)
1287                         break;
1288                 cmd.command = ISDN_STAT_BSENT;
1289                 cmd.driver = card->myid;
1290                 cmd.arg = nccip->chan;
1291                 cmd.parm.length = len;
1292                 card->interface.statcallb(&cmd);
1293                 break;
1294
1295         case CAPI_DISCONNECT_B3_IND:    /* ncci */
1296                 if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
1297                         goto notfound;
1298
1299                 card->bchans[nccip->chan].disconnecting = 1;
1300                 ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_IND);
1301                 capi_cmsg_answer(cmsg);
1302                 send_message(card, cmsg);
1303                 ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_RESP);
1304                 break;
1305
1306         case CAPI_DISCONNECT_B3_CONF:   /* ncci */
1307                 if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
1308                         goto notfound;
1309                 if (cmsg->Info) {
1310                         printk(KERN_INFO "capidrv-%d: %s info 0x%x (%s) for ncci 0x%x\n",
1311                            card->contrnr,
1312                            capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1313                                cmsg->Info, capi_info2str(cmsg->Info),
1314                                cmsg->adr.adrNCCI);
1315                         ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_CONF_ERROR);
1316                 }
1317                 break;
1318
1319         case CAPI_RESET_B3_IND: /* ncci */
1320                 if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI)))
1321                         goto notfound;
1322                 ncci_change_state(card, nccip, EV_NCCI_RESET_B3_IND);
1323                 capi_cmsg_answer(cmsg);
1324                 send_message(card, cmsg);
1325                 break;
1326
1327         case CAPI_RESET_B3_CONF:        /* ncci */
1328                 goto ignored;   /* $$$$ */
1329
1330         case CAPI_FACILITY_IND: /* Controller/plci/ncci */
1331                 goto ignored;
1332         case CAPI_FACILITY_CONF:        /* Controller/plci/ncci */
1333                 goto ignored;
1334
1335         default:
1336                 printk(KERN_ERR "capidrv-%d: got %s for ncci 0x%x ???",
1337                        card->contrnr,
1338                        capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1339                        cmsg->adr.adrNCCI);
1340         }
1341         return;
1342       ignored:
1343         printk(KERN_INFO "capidrv-%d: %s for ncci 0x%x ignored\n",
1344                card->contrnr,
1345                capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1346                cmsg->adr.adrNCCI);
1347         return;
1348       notfound:
1349         printk(KERN_ERR "capidrv-%d: %s: ncci 0x%x not found\n",
1350                card->contrnr,
1351                capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1352                cmsg->adr.adrNCCI);
1353 }
1354
1355
1356 static void handle_data(_cmsg * cmsg, struct sk_buff *skb)
1357 {
1358         capidrv_contr *card = findcontrbynumber(cmsg->adr.adrController & 0x7f);
1359         capidrv_ncci *nccip;
1360
1361         if (!card) {
1362                 printk(KERN_ERR "capidrv: %s from unknown controller 0x%x\n",
1363                        capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1364                        cmsg->adr.adrController & 0x7f);
1365                 kfree_skb(skb);
1366                 return;
1367         }
1368         if (!(nccip = find_ncci(card, cmsg->adr.adrNCCI))) {
1369                 printk(KERN_ERR "capidrv-%d: %s: ncci 0x%x not found\n",
1370                        card->contrnr,
1371                        capi_cmd2str(cmsg->Command, cmsg->Subcommand),
1372                        cmsg->adr.adrNCCI);
1373                 kfree_skb(skb);
1374                 return;
1375         }
1376         (void) skb_pull(skb, CAPIMSG_LEN(skb->data));
1377         card->interface.rcvcallb_skb(card->myid, nccip->chan, skb);
1378         capi_cmsg_answer(cmsg);
1379         send_message(card, cmsg);
1380 }
1381
1382 static _cmsg s_cmsg;
1383
1384 static void capidrv_recv_message(struct capi20_appl *ap, struct sk_buff *skb)
1385 {
1386         capi_message2cmsg(&s_cmsg, skb->data);
1387         if (debugmode > 3) {
1388                 _cdebbuf *cdb = capi_cmsg2str(&s_cmsg);
1389
1390                 if (cdb) {
1391                         printk(KERN_DEBUG "%s: applid=%d %s\n", __func__,
1392                                 ap->applid, cdb->buf);
1393                         cdebbuf_free(cdb);
1394                 } else
1395                         printk(KERN_DEBUG "%s: applid=%d %s not traced\n",
1396                                 __func__, ap->applid,
1397                                 capi_cmd2str(s_cmsg.Command, s_cmsg.Subcommand));
1398         }
1399         if (s_cmsg.Command == CAPI_DATA_B3
1400             && s_cmsg.Subcommand == CAPI_IND) {
1401                 handle_data(&s_cmsg, skb);
1402                 return;
1403         }
1404         if ((s_cmsg.adr.adrController & 0xffffff00) == 0)
1405                 handle_controller(&s_cmsg);
1406         else if ((s_cmsg.adr.adrPLCI & 0xffff0000) == 0)
1407                 handle_plci(&s_cmsg);
1408         else
1409                 handle_ncci(&s_cmsg);
1410         /*
1411          * data of skb used in s_cmsg,
1412          * free data when s_cmsg is not used again
1413          * thanks to Lars Heete <hel@admin.de>
1414          */
1415         kfree_skb(skb);
1416 }
1417
1418 /* ------------------------------------------------------------------- */
1419
1420 #define PUTBYTE_TO_STATUS(card, byte) \
1421         do { \
1422                 *(card)->q931_write++ = (byte); \
1423                 if ((card)->q931_write > (card)->q931_end) \
1424                         (card)->q931_write = (card)->q931_buf; \
1425         } while (0)
1426
1427 static void handle_dtrace_data(capidrv_contr *card,
1428                              int send, int level2, u8 *data, u16 len)
1429 {
1430         u8 *p, *end;
1431         isdn_ctrl cmd;
1432
1433         if (!len) {
1434                 printk(KERN_DEBUG "capidrv-%d: avmb1_q931_data: len == %d\n",
1435                                 card->contrnr, len);
1436                 return;
1437         }
1438
1439         if (level2) {
1440                 PUTBYTE_TO_STATUS(card, 'D');
1441                 PUTBYTE_TO_STATUS(card, '2');
1442                 PUTBYTE_TO_STATUS(card, send ? '>' : '<');
1443                 PUTBYTE_TO_STATUS(card, ':');
1444         } else {
1445                 PUTBYTE_TO_STATUS(card, 'D');
1446                 PUTBYTE_TO_STATUS(card, '3');
1447                 PUTBYTE_TO_STATUS(card, send ? '>' : '<');
1448                 PUTBYTE_TO_STATUS(card, ':');
1449         }
1450
1451         for (p = data, end = data+len; p < end; p++) {
1452                 u8 w;
1453                 PUTBYTE_TO_STATUS(card, ' ');
1454                 w = (*p >> 4) & 0xf;
1455                 PUTBYTE_TO_STATUS(card, (w < 10) ? '0'+w : 'A'-10+w);
1456                 w = *p & 0xf;
1457                 PUTBYTE_TO_STATUS(card, (w < 10) ? '0'+w : 'A'-10+w);
1458         }
1459         PUTBYTE_TO_STATUS(card, '\n');
1460
1461         cmd.command = ISDN_STAT_STAVAIL;
1462         cmd.driver = card->myid;
1463         cmd.arg = len*3+5;
1464         card->interface.statcallb(&cmd);
1465 }
1466
1467 /* ------------------------------------------------------------------- */
1468
1469 static _cmsg cmdcmsg;
1470
1471 static int capidrv_ioctl(isdn_ctrl * c, capidrv_contr * card)
1472 {
1473         switch (c->arg) {
1474         case 1:
1475                 debugmode = (int)(*((unsigned int *)c->parm.num));
1476                 printk(KERN_DEBUG "capidrv-%d: debugmode=%d\n",
1477                                 card->contrnr, debugmode);
1478                 return 0;
1479         default:
1480                 printk(KERN_DEBUG "capidrv-%d: capidrv_ioctl(%ld) called ??\n",
1481                                 card->contrnr, c->arg);
1482                 return -EINVAL;
1483         }
1484         return -EINVAL;
1485 }
1486
1487 /*
1488  * Handle leased lines (CAPI-Bundling)
1489  */
1490
1491 struct internal_bchannelinfo {
1492    unsigned short channelalloc;
1493    unsigned short operation;
1494    unsigned char  cmask[31];
1495 };
1496
1497 static int decodeFVteln(char *teln, unsigned long *bmaskp, int *activep)
1498 {
1499         unsigned long bmask = 0;
1500         int active = !0;
1501         char *s;
1502         int i;
1503
1504         if (strncmp(teln, "FV:", 3) != 0)
1505                 return 1;
1506         s = teln + 3;
1507         while (*s && *s == ' ') s++;
1508         if (!*s) return -2;
1509         if (*s == 'p' || *s == 'P') {
1510                 active = 0;
1511                 s++;
1512         }
1513         if (*s == 'a' || *s == 'A') {
1514                 active = !0;
1515                 s++;
1516         }
1517         while (*s) {
1518                 int digit1 = 0;
1519                 int digit2 = 0;
1520                 if (!isdigit(*s)) return -3;
1521                 while (isdigit(*s)) { digit1 = digit1*10 + (*s - '0'); s++; }
1522                 if (digit1 <= 0 || digit1 > 30) return -4;
1523                 if (*s == 0 || *s == ',' || *s == ' ') {
1524                         bmask |= (1 << digit1);
1525                         digit1 = 0;
1526                         if (*s) s++;
1527                         continue;
1528                 }
1529                 if (*s != '-') return -5;
1530                 s++;
1531                 if (!isdigit(*s)) return -3;
1532                 while (isdigit(*s)) { digit2 = digit2*10 + (*s - '0'); s++; }
1533                 if (digit2 <= 0 || digit2 > 30) return -4;
1534                 if (*s == 0 || *s == ',' || *s == ' ') {
1535                         if (digit1 > digit2)
1536                                 for (i = digit2; i <= digit1 ; i++)
1537                                         bmask |= (1 << i);
1538                         else
1539                                 for (i = digit1; i <= digit2 ; i++)
1540                                         bmask |= (1 << i);
1541                         digit1 = digit2 = 0;
1542                         if (*s) s++;
1543                         continue;
1544                 }
1545                 return -6;
1546         }
1547         if (activep) *activep = active;
1548         if (bmaskp) *bmaskp = bmask;
1549         return 0;
1550 }
1551
1552 static int FVteln2capi20(char *teln, u8 AdditionalInfo[1+2+2+31])
1553 {
1554         unsigned long bmask;
1555         int active;
1556         int rc, i;
1557
1558         rc = decodeFVteln(teln, &bmask, &active);
1559         if (rc) return rc;
1560         /* Length */
1561         AdditionalInfo[0] = 2+2+31;
1562         /* Channel: 3 => use channel allocation */
1563         AdditionalInfo[1] = 3; AdditionalInfo[2] = 0;
1564         /* Operation: 0 => DTE mode, 1 => DCE mode */
1565         if (active) {
1566                 AdditionalInfo[3] = 0; AdditionalInfo[4] = 0;
1567         } else {
1568                 AdditionalInfo[3] = 1; AdditionalInfo[4] = 0;
1569         }
1570         /* Channel mask array */
1571         AdditionalInfo[5] = 0; /* no D-Channel */
1572         for (i=1; i <= 30; i++)
1573                 AdditionalInfo[5+i] = (bmask & (1 << i)) ? 0xff : 0;
1574         return 0;
1575 }
1576
1577 static int capidrv_command(isdn_ctrl * c, capidrv_contr * card)
1578 {
1579         isdn_ctrl cmd;
1580         struct capidrv_bchan *bchan;
1581         struct capidrv_plci *plcip;
1582         u8 AdditionalInfo[1+2+2+31];
1583         int rc, isleasedline = 0;
1584
1585         if (c->command == ISDN_CMD_IOCTL)
1586                 return capidrv_ioctl(c, card);
1587
1588         switch (c->command) {
1589         case ISDN_CMD_DIAL:{
1590                         u8 calling[ISDN_MSNLEN + 3];
1591                         u8 called[ISDN_MSNLEN + 2];
1592
1593                         if (debugmode)
1594                                 printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_DIAL(ch=%ld,\"%s,%d,%d,%s\")\n",
1595                                         card->contrnr,
1596                                         c->arg,
1597                                         c->parm.setup.phone,
1598                                         c->parm.setup.si1,
1599                                         c->parm.setup.si2,
1600                                         c->parm.setup.eazmsn);
1601
1602                         bchan = &card->bchans[c->arg % card->nbchan];
1603
1604                         if (bchan->plcip) {
1605                                 printk(KERN_ERR "capidrv-%d: dail ch=%ld,\"%s,%d,%d,%s\" in use (plci=0x%x)\n",
1606                                         card->contrnr,
1607                                         c->arg,
1608                                         c->parm.setup.phone,
1609                                         c->parm.setup.si1,
1610                                         c->parm.setup.si2,
1611                                         c->parm.setup.eazmsn,
1612                                         bchan->plcip->plci);
1613                                 return 0;
1614                         }
1615                         bchan->si1 = c->parm.setup.si1;
1616                         bchan->si2 = c->parm.setup.si2;
1617
1618                         strncpy(bchan->num, c->parm.setup.phone, sizeof(bchan->num));
1619                         strncpy(bchan->mynum, c->parm.setup.eazmsn, sizeof(bchan->mynum));
1620                         rc = FVteln2capi20(bchan->num, AdditionalInfo);
1621                         isleasedline = (rc == 0);
1622                         if (rc < 0)
1623                                 printk(KERN_ERR "capidrv-%d: WARNING: invalid leased linedefinition \"%s\"\n", card->contrnr, bchan->num);
1624
1625                         if (isleasedline) {
1626                                 calling[0] = 0;
1627                                 called[0] = 0;
1628                                 if (debugmode)
1629                                         printk(KERN_DEBUG "capidrv-%d: connecting leased line\n", card->contrnr);
1630                         } else {
1631                                 calling[0] = strlen(bchan->mynum) + 2;
1632                                 calling[1] = 0;
1633                                 calling[2] = 0x80;
1634                                 strncpy(calling + 3, bchan->mynum, ISDN_MSNLEN);
1635                                 called[0] = strlen(bchan->num) + 1;
1636                                 called[1] = 0x80;
1637                                 strncpy(called + 2, bchan->num, ISDN_MSNLEN);
1638                         }
1639
1640                         capi_fill_CONNECT_REQ(&cmdcmsg,
1641                                               global.ap.applid,
1642                                               card->msgid++,
1643                                               card->contrnr,    /* adr */
1644                                           si2cip(bchan->si1, bchan->si2),       /* cipvalue */
1645                                               called,   /* CalledPartyNumber */
1646                                               calling,  /* CallingPartyNumber */
1647                                               NULL,     /* CalledPartySubaddress */
1648                                               NULL,     /* CallingPartySubaddress */
1649                                             b1prot(bchan->l2, bchan->l3),       /* B1protocol */
1650                                             b2prot(bchan->l2, bchan->l3),       /* B2protocol */
1651                                             b3prot(bchan->l2, bchan->l3),       /* B3protocol */
1652                                             b1config(bchan->l2, bchan->l3),     /* B1configuration */
1653                                               NULL,     /* B2configuration */
1654                                               NULL,     /* B3configuration */
1655                                               NULL,     /* BC */
1656                                               NULL,     /* LLC */
1657                                               NULL,     /* HLC */
1658                                               /* BChannelinformation */
1659                                               isleasedline ? AdditionalInfo : NULL,
1660                                               NULL,     /* Keypadfacility */
1661                                               NULL,     /* Useruserdata */
1662                                               NULL      /* Facilitydataarray */
1663                             );
1664                         if ((plcip = new_plci(card, (c->arg % card->nbchan))) == NULL) {
1665                                 cmd.command = ISDN_STAT_DHUP;
1666                                 cmd.driver = card->myid;
1667                                 cmd.arg = (c->arg % card->nbchan);
1668                                 card->interface.statcallb(&cmd);
1669                                 return -1;
1670                         }
1671                         plcip->msgid = cmdcmsg.Messagenumber;
1672                         plcip->leasedline = isleasedline;
1673                         plci_change_state(card, plcip, EV_PLCI_CONNECT_REQ);
1674                         send_message(card, &cmdcmsg);
1675                         return 0;
1676                 }
1677
1678         case ISDN_CMD_ACCEPTD:
1679
1680                 bchan = &card->bchans[c->arg % card->nbchan];
1681                 if (debugmode)
1682                         printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_ACCEPTD(ch=%ld) l2=%d l3=%d\n",
1683                                card->contrnr,
1684                                c->arg, bchan->l2, bchan->l3);
1685
1686                 capi_fill_CONNECT_RESP(&cmdcmsg,
1687                                        global.ap.applid,
1688                                        card->msgid++,
1689                                        bchan->plcip->plci,      /* adr */
1690                                        0,       /* Reject */
1691                                        b1prot(bchan->l2, bchan->l3),    /* B1protocol */
1692                                        b2prot(bchan->l2, bchan->l3),    /* B2protocol */
1693                                        b3prot(bchan->l2, bchan->l3),    /* B3protocol */
1694                                        b1config(bchan->l2, bchan->l3),  /* B1configuration */
1695                                        NULL,    /* B2configuration */
1696                                        NULL,    /* B3configuration */
1697                                        NULL,    /* ConnectedNumber */
1698                                        NULL,    /* ConnectedSubaddress */
1699                                        NULL,    /* LLC */
1700                                        NULL,    /* BChannelinformation */
1701                                        NULL,    /* Keypadfacility */
1702                                        NULL,    /* Useruserdata */
1703                                        NULL     /* Facilitydataarray */
1704                 );
1705                 capi_cmsg2message(&cmdcmsg, cmdcmsg.buf);
1706                 plci_change_state(card, bchan->plcip, EV_PLCI_CONNECT_RESP);
1707                 send_message(card, &cmdcmsg);
1708                 return 0;
1709
1710         case ISDN_CMD_ACCEPTB:
1711                 if (debugmode)
1712                         printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_ACCEPTB(ch=%ld)\n",
1713                                card->contrnr,
1714                                c->arg);
1715                 return -ENOSYS;
1716
1717         case ISDN_CMD_HANGUP:
1718                 if (debugmode)
1719                         printk(KERN_DEBUG "capidrv-%d: ISDN_CMD_HANGUP(ch=%ld)\n",
1720                                card->contrnr,
1721                                c->arg);
1722                 bchan = &card->bchans[c->arg % card->nbchan];
1723
1724                 if (bchan->disconnecting) {
1725                         if (debugmode)
1726                                 printk(KERN_DEBUG "capidrv-%d: chan %ld already disconnecting ...\n",
1727                                        card->contrnr,
1728                                        c->arg);
1729                         return 0;
1730                 }
1731                 if (bchan->nccip) {
1732                         bchan->disconnecting = 1;
1733                         capi_fill_DISCONNECT_B3_REQ(&cmdcmsg,
1734                                                     global.ap.applid,
1735                                                     card->msgid++,
1736                                                     bchan->nccip->ncci,
1737                                                     NULL        /* NCPI */
1738                         );
1739                         ncci_change_state(card, bchan->nccip, EV_NCCI_DISCONNECT_B3_REQ);
1740                         send_message(card, &cmdcmsg);
1741                         return 0;
1742                 } else if (bchan->plcip) {
1743                         if (bchan->plcip->state == ST_PLCI_INCOMING) {
1744                                 /*
1745                                  * just ignore, we a called from
1746                                  * isdn_status_callback(),
1747                                  * which will return 0 or 2, this is handled
1748                                  * by the CONNECT_IND handler
1749                                  */
1750                                 bchan->disconnecting = 1;
1751                                 return 0;
1752                         } else if (bchan->plcip->plci) {
1753                                 bchan->disconnecting = 1;
1754                                 capi_fill_DISCONNECT_REQ(&cmdcmsg,
1755                                                          global.ap.applid,
1756                                                          card->msgid++,
1757                                                       bchan->plcip->plci,
1758                                                          NULL,  /* BChannelinformation */
1759                                                          NULL,  /* Keypadfacility */
1760                                                          NULL,  /* Useruserdata */
1761                                                          NULL   /* Facilitydataarray */
1762                                 );
1763                                 plci_change_state(card, bchan->plcip, EV_PLCI_DISCONNECT_REQ);
1764                                 send_message(card, &cmdcmsg);
1765                                 return 0;
1766                         } else {
1767                                 printk(KERN_ERR "capidrv-%d: chan %ld disconnect request while waiting for CONNECT_CONF\n",
1768                                        card->contrnr,
1769                                        c->arg);
1770                                 return -EINVAL;
1771                         }
1772                 }
1773                 printk(KERN_ERR "capidrv-%d: chan %ld disconnect request on free channel\n",
1774                                        card->contrnr,
1775                                        c->arg);
1776                 return -EINVAL;
1777 /* ready */
1778
1779         case ISDN_CMD_SETL2:
1780                 if (debugmode)
1781                         printk(KERN_DEBUG "capidrv-%d: set L2 on chan %ld to %ld\n",
1782                                card->contrnr,
1783                                (c->arg & 0xff), (c->arg >> 8));
1784                 bchan = &card->bchans[(c->arg & 0xff) % card->nbchan];
1785                 bchan->l2 = (c->arg >> 8);
1786                 return 0;
1787
1788         case ISDN_CMD_SETL3:
1789                 if (debugmode)
1790                         printk(KERN_DEBUG "capidrv-%d: set L3 on chan %ld to %ld\n",
1791                                card->contrnr,
1792                                (c->arg & 0xff), (c->arg >> 8));
1793                 bchan = &card->bchans[(c->arg & 0xff) % card->nbchan];
1794                 bchan->l3 = (c->arg >> 8);
1795                 return 0;
1796
1797         case ISDN_CMD_SETEAZ:
1798                 if (debugmode)
1799                         printk(KERN_DEBUG "capidrv-%d: set EAZ \"%s\" on chan %ld\n",
1800                                card->contrnr,
1801                                c->parm.num, c->arg);
1802                 bchan = &card->bchans[c->arg % card->nbchan];
1803                 strncpy(bchan->msn, c->parm.num, ISDN_MSNLEN);
1804                 return 0;
1805
1806         case ISDN_CMD_CLREAZ:
1807                 if (debugmode)
1808                         printk(KERN_DEBUG "capidrv-%d: clearing EAZ on chan %ld\n",
1809                                         card->contrnr, c->arg);
1810                 bchan = &card->bchans[c->arg % card->nbchan];
1811                 bchan->msn[0] = 0;
1812                 return 0;
1813
1814         default:
1815                 printk(KERN_ERR "capidrv-%d: ISDN_CMD_%d, Huh?\n",
1816                                         card->contrnr, c->command);
1817                 return -EINVAL;
1818         }
1819         return 0;
1820 }
1821
1822 static int if_command(isdn_ctrl * c)
1823 {
1824         capidrv_contr *card = findcontrbydriverid(c->driver);
1825
1826         if (card)
1827                 return capidrv_command(c, card);
1828
1829         printk(KERN_ERR
1830              "capidrv: if_command %d called with invalid driverId %d!\n",
1831                                                 c->command, c->driver);
1832         return -ENODEV;
1833 }
1834
1835 static _cmsg sendcmsg;
1836
1837 static int if_sendbuf(int id, int channel, int doack, struct sk_buff *skb)
1838 {
1839         capidrv_contr *card = findcontrbydriverid(id);
1840         capidrv_bchan *bchan;
1841         capidrv_ncci *nccip;
1842         int len = skb->len;
1843         int msglen;
1844         u16 errcode;
1845         u16 datahandle;
1846         u32 data;
1847
1848         if (!card) {
1849                 printk(KERN_ERR "capidrv: if_sendbuf called with invalid driverId %d!\n",
1850                        id);
1851                 return 0;
1852         }
1853         if (debugmode > 4)
1854                 printk(KERN_DEBUG "capidrv-%d: sendbuf len=%d skb=%p doack=%d\n",
1855                                         card->contrnr, len, skb, doack);
1856         bchan = &card->bchans[channel % card->nbchan];
1857         nccip = bchan->nccip;
1858         if (!nccip || nccip->state != ST_NCCI_ACTIVE) {
1859                 printk(KERN_ERR "capidrv-%d: if_sendbuf: %s:%d: chan not up!\n",
1860                        card->contrnr, card->name, channel);
1861                 return 0;
1862         }
1863         datahandle = nccip->datahandle;
1864
1865         /*
1866          * Here we copy pointer skb->data into the 32-bit 'Data' field.
1867          * The 'Data' field is not used in practice in linux kernel
1868          * (neither in 32 or 64 bit), but should have some value,
1869          * since a CAPI message trace will display it.
1870          *
1871          * The correct value in the 32 bit case is the address of the
1872          * data, in 64 bit it makes no sense, we use 0 there.
1873          */
1874
1875 #ifdef CONFIG_64BIT
1876         data = 0;
1877 #else
1878         data = (unsigned long) skb->data;
1879 #endif
1880
1881         capi_fill_DATA_B3_REQ(&sendcmsg, global.ap.applid, card->msgid++,
1882                               nccip->ncci,      /* adr */
1883                               data,             /* Data */
1884                               skb->len,         /* DataLength */
1885                               datahandle,       /* DataHandle */
1886                               0 /* Flags */
1887             );
1888
1889         if (capidrv_add_ack(nccip, datahandle, doack ? (int)skb->len : -1) < 0)
1890            return 0;
1891
1892         capi_cmsg2message(&sendcmsg, sendcmsg.buf);
1893         msglen = CAPIMSG_LEN(sendcmsg.buf);
1894         if (skb_headroom(skb) < msglen) {
1895                 struct sk_buff *nskb = skb_realloc_headroom(skb, msglen);
1896                 if (!nskb) {
1897                         printk(KERN_ERR "capidrv-%d: if_sendbuf: no memory\n",
1898                                 card->contrnr);
1899                         (void)capidrv_del_ack(nccip, datahandle);
1900                         return 0;
1901                 }
1902                 printk(KERN_DEBUG "capidrv-%d: only %d bytes headroom, need %d\n",
1903                        card->contrnr, skb_headroom(skb), msglen);
1904                 memcpy(skb_push(nskb, msglen), sendcmsg.buf, msglen);
1905                 errcode = capi20_put_message(&global.ap, nskb);
1906                 if (errcode == CAPI_NOERROR) {
1907                         dev_kfree_skb(skb);
1908                         nccip->datahandle++;
1909                         return len;
1910                 }
1911                 if (debugmode > 3)
1912                         printk(KERN_DEBUG "capidrv-%d: sendbuf putmsg ret(%x) - %s\n",
1913                                 card->contrnr, errcode, capi_info2str(errcode));
1914                 (void)capidrv_del_ack(nccip, datahandle);
1915                 dev_kfree_skb(nskb);
1916                 return errcode == CAPI_SENDQUEUEFULL ? 0 : -1;
1917         } else {
1918                 memcpy(skb_push(skb, msglen), sendcmsg.buf, msglen);
1919                 errcode = capi20_put_message(&global.ap, skb);
1920                 if (errcode == CAPI_NOERROR) {
1921                         nccip->datahandle++;
1922                         return len;
1923                 }
1924                 if (debugmode > 3)
1925                         printk(KERN_DEBUG "capidrv-%d: sendbuf putmsg ret(%x) - %s\n",
1926                                 card->contrnr, errcode, capi_info2str(errcode));
1927                 skb_pull(skb, msglen);
1928                 (void)capidrv_del_ack(nccip, datahandle);
1929                 return errcode == CAPI_SENDQUEUEFULL ? 0 : -1;
1930         }
1931 }
1932
1933 static int if_readstat(u8 __user *buf, int len, int id, int channel)
1934 {
1935         capidrv_contr *card = findcontrbydriverid(id);
1936         int count;
1937         u8 __user *p;
1938
1939         if (!card) {
1940                 printk(KERN_ERR "capidrv: if_readstat called with invalid driverId %d!\n",
1941                        id);
1942                 return -ENODEV;
1943         }
1944
1945         for (p=buf, count=0; count < len; p++, count++) {
1946                 if (put_user(*card->q931_read++, p))
1947                         return -EFAULT;
1948                 if (card->q931_read > card->q931_end)
1949                         card->q931_read = card->q931_buf;
1950         }
1951         return count;
1952
1953 }
1954
1955 static void enable_dchannel_trace(capidrv_contr *card)
1956 {
1957         u8 manufacturer[CAPI_MANUFACTURER_LEN];
1958         capi_version version;
1959         u16 contr = card->contrnr;
1960         u16 errcode;
1961         u16 avmversion[3];
1962
1963         errcode = capi20_get_manufacturer(contr, manufacturer);
1964         if (errcode != CAPI_NOERROR) {
1965            printk(KERN_ERR "%s: can't get manufacturer (0x%x)\n",
1966                         card->name, errcode);
1967            return;
1968         }
1969         if (strstr(manufacturer, "AVM") == NULL) {
1970            printk(KERN_ERR "%s: not from AVM, no d-channel trace possible (%s)\n",
1971                         card->name, manufacturer);
1972            return;
1973         }
1974         errcode = capi20_get_version(contr, &version);
1975         if (errcode != CAPI_NOERROR) {
1976            printk(KERN_ERR "%s: can't get version (0x%x)\n",
1977                         card->name, errcode);
1978            return;
1979         }
1980         avmversion[0] = (version.majormanuversion >> 4) & 0x0f;
1981         avmversion[1] = (version.majormanuversion << 4) & 0xf0;
1982         avmversion[1] |= (version.minormanuversion >> 4) & 0x0f;
1983         avmversion[2] |= version.minormanuversion & 0x0f;
1984
1985         if (avmversion[0] > 3 || (avmversion[0] == 3 && avmversion[1] > 5)) {
1986                 printk(KERN_INFO "%s: D2 trace enabled\n", card->name);
1987                 capi_fill_MANUFACTURER_REQ(&cmdcmsg, global.ap.applid,
1988                                            card->msgid++,
1989                                            contr,
1990                                            0x214D5641,  /* ManuID */
1991                                            0,           /* Class */
1992                                            1,           /* Function */
1993                                            (_cstruct)"\004\200\014\000\000");
1994         } else {
1995                 printk(KERN_INFO "%s: D3 trace enabled\n", card->name);
1996                 capi_fill_MANUFACTURER_REQ(&cmdcmsg, global.ap.applid,
1997                                            card->msgid++,
1998                                            contr,
1999                                            0x214D5641,  /* ManuID */
2000                                            0,           /* Class */
2001                                            1,           /* Function */
2002                                            (_cstruct)"\004\002\003\000\000");
2003         }
2004         send_message(card, &cmdcmsg);
2005 }
2006
2007
2008 static void send_listen(capidrv_contr *card)
2009 {
2010         capi_fill_LISTEN_REQ(&cmdcmsg, global.ap.applid,
2011                              card->msgid++,
2012                              card->contrnr, /* controller */
2013                              1 << 6,    /* Infomask */
2014                              card->cipmask,
2015                              card->cipmask2,
2016                              NULL, NULL);
2017         send_message(card, &cmdcmsg);
2018         listen_change_state(card, EV_LISTEN_REQ);
2019 }
2020
2021 static void listentimerfunc(unsigned long x)
2022 {
2023         capidrv_contr *card = (capidrv_contr *)x;
2024         if (card->state != ST_LISTEN_NONE && card->state != ST_LISTEN_ACTIVE)
2025                 printk(KERN_ERR "%s: controller dead ??\n", card->name);
2026         send_listen(card);
2027         mod_timer(&card->listentimer, jiffies + 60*HZ);
2028 }
2029
2030
2031 static int capidrv_addcontr(u16 contr, struct capi_profile *profp)
2032 {
2033         capidrv_contr *card;
2034         unsigned long flags;
2035         isdn_ctrl cmd;
2036         char id[20];
2037         int i;
2038
2039         sprintf(id, "capidrv-%d", contr);
2040         if (!try_module_get(THIS_MODULE)) {
2041                 printk(KERN_WARNING "capidrv: (%s) Could not reserve module\n", id);
2042                 return -1;
2043         }
2044         if (!(card = kzalloc(sizeof(capidrv_contr), GFP_ATOMIC))) {
2045                 printk(KERN_WARNING
2046                  "capidrv: (%s) Could not allocate contr-struct.\n", id);
2047                 return -1;
2048         }
2049         card->owner = THIS_MODULE;
2050         init_timer(&card->listentimer);
2051         strcpy(card->name, id);
2052         card->contrnr = contr;
2053         card->nbchan = profp->nbchannel;
2054         card->bchans = kmalloc(sizeof(capidrv_bchan) * card->nbchan, GFP_ATOMIC);
2055         if (!card->bchans) {
2056                 printk(KERN_WARNING
2057                 "capidrv: (%s) Could not allocate bchan-structs.\n", id);
2058                 module_put(card->owner);
2059                 kfree(card);
2060                 return -1;
2061         }
2062         card->interface.channels = profp->nbchannel;
2063         card->interface.maxbufsize = 2048;
2064         card->interface.command = if_command;
2065         card->interface.writebuf_skb = if_sendbuf;
2066         card->interface.writecmd = NULL;
2067         card->interface.readstat = if_readstat;
2068         card->interface.features = ISDN_FEATURE_L2_HDLC |
2069                                    ISDN_FEATURE_L2_TRANS |
2070                                    ISDN_FEATURE_L3_TRANS |
2071                                    ISDN_FEATURE_P_UNKNOWN |
2072                                    ISDN_FEATURE_L2_X75I |
2073                                    ISDN_FEATURE_L2_X75UI |
2074                                    ISDN_FEATURE_L2_X75BUI;
2075         if (profp->support1 & (1<<2))
2076                 card->interface.features |= ISDN_FEATURE_L2_V11096 |
2077                                             ISDN_FEATURE_L2_V11019 |
2078                                             ISDN_FEATURE_L2_V11038;
2079         if (profp->support1 & (1<<8))
2080                 card->interface.features |= ISDN_FEATURE_L2_MODEM;
2081         card->interface.hl_hdrlen = 22; /* len of DATA_B3_REQ */
2082         strncpy(card->interface.id, id, sizeof(card->interface.id) - 1);
2083
2084
2085         card->q931_read = card->q931_buf;
2086         card->q931_write = card->q931_buf;
2087         card->q931_end = card->q931_buf + sizeof(card->q931_buf) - 1;
2088
2089         if (!register_isdn(&card->interface)) {
2090                 printk(KERN_ERR "capidrv: Unable to register contr %s\n", id);
2091                 kfree(card->bchans);
2092                 module_put(card->owner);
2093                 kfree(card);
2094                 return -1;
2095         }
2096         card->myid = card->interface.channels;
2097         memset(card->bchans, 0, sizeof(capidrv_bchan) * card->nbchan);
2098         for (i = 0; i < card->nbchan; i++) {
2099                 card->bchans[i].contr = card;
2100         }
2101
2102         spin_lock_irqsave(&global_lock, flags);
2103         card->next = global.contr_list;
2104         global.contr_list = card;
2105         global.ncontr++;
2106         spin_unlock_irqrestore(&global_lock, flags);
2107
2108         cmd.command = ISDN_STAT_RUN;
2109         cmd.driver = card->myid;
2110         card->interface.statcallb(&cmd);
2111
2112         card->cipmask = 0x1FFF03FF;     /* any */
2113         card->cipmask2 = 0;
2114
2115         card->listentimer.data = (unsigned long)card;
2116         card->listentimer.function = listentimerfunc;
2117         send_listen(card);
2118         mod_timer(&card->listentimer, jiffies + 60*HZ);
2119
2120         printk(KERN_INFO "%s: now up (%d B channels)\n",
2121                 card->name, card->nbchan);
2122
2123         enable_dchannel_trace(card);
2124
2125         return 0;
2126 }
2127
2128 static int capidrv_delcontr(u16 contr)
2129 {
2130         capidrv_contr **pp, *card;
2131         unsigned long flags;
2132         isdn_ctrl cmd;
2133
2134         spin_lock_irqsave(&global_lock, flags);
2135         for (card = global.contr_list; card; card = card->next) {
2136                 if (card->contrnr == contr)
2137                         break;
2138         }
2139         if (!card) {
2140                 spin_unlock_irqrestore(&global_lock, flags);
2141                 printk(KERN_ERR "capidrv: delcontr: no contr %u\n", contr);
2142                 return -1;
2143         }
2144
2145         /* FIXME: maybe a race condition the card should be removed
2146          * here from global list /kkeil
2147          */
2148         spin_unlock_irqrestore(&global_lock, flags);
2149
2150         del_timer(&card->listentimer);
2151
2152         if (debugmode)
2153                 printk(KERN_DEBUG "capidrv-%d: id=%d unloading\n",
2154                                         card->contrnr, card->myid);
2155
2156         cmd.command = ISDN_STAT_STOP;
2157         cmd.driver = card->myid;
2158         card->interface.statcallb(&cmd);
2159
2160         while (card->nbchan) {
2161
2162                 cmd.command = ISDN_STAT_DISCH;
2163                 cmd.driver = card->myid;
2164                 cmd.arg = card->nbchan-1;
2165                 cmd.parm.num[0] = 0;
2166                 if (debugmode)
2167                         printk(KERN_DEBUG "capidrv-%d: id=%d disable chan=%ld\n",
2168                                         card->contrnr, card->myid, cmd.arg);
2169                 card->interface.statcallb(&cmd);
2170
2171                 if (card->bchans[card->nbchan-1].nccip)
2172                         free_ncci(card, card->bchans[card->nbchan-1].nccip);
2173                 if (card->bchans[card->nbchan-1].plcip)
2174                         free_plci(card, card->bchans[card->nbchan-1].plcip);
2175                 if (card->plci_list)
2176                         printk(KERN_ERR "capidrv: bug in free_plci()\n");
2177                 card->nbchan--;
2178         }
2179         kfree(card->bchans);
2180         card->bchans = NULL;
2181
2182         if (debugmode)
2183                 printk(KERN_DEBUG "capidrv-%d: id=%d isdn unload\n",
2184                                         card->contrnr, card->myid);
2185
2186         cmd.command = ISDN_STAT_UNLOAD;
2187         cmd.driver = card->myid;
2188         card->interface.statcallb(&cmd);
2189
2190         if (debugmode)
2191                 printk(KERN_DEBUG "capidrv-%d: id=%d remove contr from list\n",
2192                                         card->contrnr, card->myid);
2193
2194         spin_lock_irqsave(&global_lock, flags);
2195         for (pp = &global.contr_list; *pp; pp = &(*pp)->next) {
2196                 if (*pp == card) {
2197                         *pp = (*pp)->next;
2198                         card->next = NULL;
2199                         global.ncontr--;
2200                         break;
2201                 }
2202         }
2203         spin_unlock_irqrestore(&global_lock, flags);
2204
2205         module_put(card->owner);
2206         printk(KERN_INFO "%s: now down.\n", card->name);
2207         kfree(card);
2208         return 0;
2209 }
2210
2211
2212 static void lower_callback(unsigned int cmd, u32 contr, void *data)
2213 {
2214
2215         switch (cmd) {
2216         case KCI_CONTRUP:
2217                 printk(KERN_INFO "capidrv: controller %hu up\n", contr);
2218                 (void) capidrv_addcontr(contr, (capi_profile *) data);
2219                 break;
2220         case KCI_CONTRDOWN:
2221                 printk(KERN_INFO "capidrv: controller %hu down\n", contr);
2222                 (void) capidrv_delcontr(contr);
2223                 break;
2224         }
2225 }
2226
2227 /*
2228  * /proc/capi/capidrv:
2229  * nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
2230  */
2231 static int proc_capidrv_read_proc(char *page, char **start, off_t off,
2232                                        int count, int *eof, void *data)
2233 {
2234         int len = 0;
2235
2236         len += sprintf(page+len, "%lu %lu %lu %lu\n",
2237                         global.ap.nrecvctlpkt,
2238                         global.ap.nrecvdatapkt,
2239                         global.ap.nsentctlpkt,
2240                         global.ap.nsentdatapkt);
2241         if (off+count >= len)
2242            *eof = 1;
2243         if (len < off)
2244            return 0;
2245         *start = page + off;
2246         return ((count < len-off) ? count : len-off);
2247 }
2248
2249 static struct procfsentries {
2250   char *name;
2251   mode_t mode;
2252   int (*read_proc)(char *page, char **start, off_t off,
2253                                        int count, int *eof, void *data);
2254   struct proc_dir_entry *procent;
2255 } procfsentries[] = {
2256    /* { "capi",           S_IFDIR, 0 }, */
2257    { "capi/capidrv",      0      , proc_capidrv_read_proc },
2258 };
2259
2260 static void __init proc_init(void)
2261 {
2262     int nelem = ARRAY_SIZE(procfsentries);
2263     int i;
2264
2265     for (i=0; i < nelem; i++) {
2266         struct procfsentries *p = procfsentries + i;
2267         p->procent = create_proc_entry(p->name, p->mode, NULL);
2268         if (p->procent) p->procent->read_proc = p->read_proc;
2269     }
2270 }
2271
2272 static void __exit proc_exit(void)
2273 {
2274     int nelem = ARRAY_SIZE(procfsentries);
2275     int i;
2276
2277     for (i=nelem-1; i >= 0; i--) {
2278         struct procfsentries *p = procfsentries + i;
2279         if (p->procent) {
2280            remove_proc_entry(p->name, NULL);
2281            p->procent = NULL;
2282         }
2283     }
2284 }
2285
2286 static int __init capidrv_init(void)
2287 {
2288         capi_profile profile;
2289         char rev[32];
2290         char *p;
2291         u32 ncontr, contr;
2292         u16 errcode;
2293
2294         if ((p = strchr(revision, ':')) != NULL && p[1]) {
2295                 strncpy(rev, p + 2, sizeof(rev));
2296                 rev[sizeof(rev)-1] = 0;
2297                 if ((p = strchr(rev, '$')) != NULL && p > rev)
2298                    *(p-1) = 0;
2299         } else
2300                 strcpy(rev, "1.0");
2301
2302         global.ap.rparam.level3cnt = -2;  /* number of bchannels twice */
2303         global.ap.rparam.datablkcnt = 16;
2304         global.ap.rparam.datablklen = 2048;
2305
2306         global.ap.recv_message = capidrv_recv_message;
2307         errcode = capi20_register(&global.ap);
2308         if (errcode) {
2309                 return -EIO;
2310         }
2311
2312         capi20_set_callback(&global.ap, lower_callback);
2313
2314         errcode = capi20_get_profile(0, &profile);
2315         if (errcode != CAPI_NOERROR) {
2316                 capi20_release(&global.ap);
2317                 return -EIO;
2318         }
2319
2320         ncontr = profile.ncontroller;
2321         for (contr = 1; contr <= ncontr; contr++) {
2322                 errcode = capi20_get_profile(contr, &profile);
2323                 if (errcode != CAPI_NOERROR)
2324                         continue;
2325                 (void) capidrv_addcontr(contr, &profile);
2326         }
2327         proc_init();
2328
2329         printk(KERN_NOTICE "capidrv: Rev %s: loaded\n", rev);
2330         return 0;
2331 }
2332
2333 static void __exit capidrv_exit(void)
2334 {
2335         char rev[32];
2336         char *p;
2337
2338         if ((p = strchr(revision, ':')) != NULL) {
2339                 strncpy(rev, p + 1, sizeof(rev));
2340                 rev[sizeof(rev)-1] = 0;
2341                 if ((p = strchr(rev, '$')) != NULL)
2342                         *p = 0;
2343         } else {
2344                 strcpy(rev, " ??? ");
2345         }
2346
2347         capi20_release(&global.ap);
2348
2349         proc_exit();
2350
2351         printk(KERN_NOTICE "capidrv: Rev%s: unloaded\n", rev);
2352 }
2353
2354 module_init(capidrv_init);
2355 module_exit(capidrv_exit);