drivers/isdn/capi/kcapi.c

   1 /* $Id: kcapi.c,v 1.1.2.8 2004/03/26 19:57:20 armin Exp $
   2  *
   3  * Kernel CAPI 2.0 Module
   4  *
   5  * Copyright 1999 by Carsten Paeth <calle@calle.de>
   6  * Copyright 2002 by Kai Germaschewski <kai@germaschewski.name>
   7  *
   8  * This software may be used and distributed according to the terms
   9  * of the GNU General Public License, incorporated herein by reference.
  10  *
  11  */
  12
  13 #define CONFIG_AVMB1_COMPAT
  14
  15 #include "kcapi.h"
  16 #include <linux/module.h>
  17 #include <linux/mm.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/ioport.h>
  20 #include <linux/proc_fs.h>
  21 #include <linux/seq_file.h>
  22 #include <linux/skbuff.h>
  23 #include <linux/workqueue.h>
  24 #include <linux/capi.h>
  25 #include <linux/kernelcapi.h>
  26 #include <linux/init.h>
  27 #include <linux/moduleparam.h>
  28 #include <linux/delay.h>
  29 #include <asm/uaccess.h>
  30 #include <linux/isdn/capicmd.h>
  31 #include <linux/isdn/capiutil.h>
  32 #ifdef CONFIG_AVMB1_COMPAT
  33 #include <linux/b1lli.h>
  34 #endif
  35 #include <linux/mutex.h>
  36
  37 static char *revision = "$Revision: 1.1.2.8 $";
  38
  39 /* ------------------------------------------------------------- */
  40
  41 static int showcapimsgs = 0;
  42
  43 MODULE_DESCRIPTION("CAPI4Linux: kernel CAPI layer");
  44 MODULE_AUTHOR("Carsten Paeth");
  45 MODULE_LICENSE("GPL");
  46 module_param(showcapimsgs, uint, 0);
  47
  48 /* ------------------------------------------------------------- */
  49
  50 struct capi_notifier {
  51         struct work_struct work;
  52         unsigned int cmd;
  53         u32 controller;
  54         u16 applid;
  55         u32 ncci;
  56 };
  57
  58 /* ------------------------------------------------------------- */
  59
  60 static struct capi_version driver_version = {2, 0, 1, 1<<4};
  61 static char driver_serial[CAPI_SERIAL_LEN] = "0004711";
  62 static char capi_manufakturer[64] = "AVM Berlin";
  63
  64 #define NCCI2CTRL(ncci)    (((ncci) >> 24) & 0x7f)
  65
  66 LIST_HEAD(capi_drivers);
  67 DEFINE_RWLOCK(capi_drivers_list_lock);
  68
  69 static DEFINE_RWLOCK(application_lock);
  70 static DEFINE_MUTEX(controller_mutex);
  71
  72 struct capi20_appl *capi_applications[CAPI_MAXAPPL];
  73 struct capi_ctr *capi_cards[CAPI_MAXCONTR];
  74
  75 static int ncards;
  76
  77 /* -------- controller ref counting -------------------------------------- */
  78
  79 static inline struct capi_ctr *
  80 capi_ctr_get(struct capi_ctr *card)
  81 {
  82         if (!try_module_get(card->owner))
  83                 return NULL;
  84         return card;
  85 }
  86
  87 static inline void
  88 capi_ctr_put(struct capi_ctr *card)
  89 {
  90         module_put(card->owner);
  91 }
  92
  93 /* ------------------------------------------------------------- */
  94
  95 static inline struct capi_ctr *get_capi_ctr_by_nr(u16 contr)
  96 {
  97         if (contr - 1 >= CAPI_MAXCONTR)
  98                 return NULL;
  99
 100         return capi_cards[contr - 1];
 101 }
 102
 103 static inline struct capi20_appl *get_capi_appl_by_nr(u16 applid)
 104 {
 105         if (applid - 1 >= CAPI_MAXAPPL)
 106                 return NULL;
 107
 108         return capi_applications[applid - 1];
 109 }
 110
 111 /* -------- util functions ------------------------------------ */
 112
 113 static inline int capi_cmd_valid(u8 cmd)
 114 {
 115         switch (cmd) {
 116         case CAPI_ALERT:
 117         case CAPI_CONNECT:
 118         case CAPI_CONNECT_ACTIVE:
 119         case CAPI_CONNECT_B3_ACTIVE:
 120         case CAPI_CONNECT_B3:
 121         case CAPI_CONNECT_B3_T90_ACTIVE:
 122         case CAPI_DATA_B3:
 123         case CAPI_DISCONNECT_B3:
 124         case CAPI_DISCONNECT:
 125         case CAPI_FACILITY:
 126         case CAPI_INFO:
 127         case CAPI_LISTEN:
 128         case CAPI_MANUFACTURER:
 129         case CAPI_RESET_B3:
 130         case CAPI_SELECT_B_PROTOCOL:
 131                 return 1;
 132         }
 133         return 0;
 134 }
 135
 136 static inline int capi_subcmd_valid(u8 subcmd)
 137 {
 138         switch (subcmd) {
 139         case CAPI_REQ:
 140         case CAPI_CONF:
 141         case CAPI_IND:
 142         case CAPI_RESP:
 143                 return 1;
 144         }
 145         return 0;
 146 }
 147
 148 /* ------------------------------------------------------------ */
 149
 150 static void register_appl(struct capi_ctr *card, u16 applid, capi_register_params *rparam)
 151 {
 152         card = capi_ctr_get(card);
 153
 154         if (card)
 155                 card->register_appl(card, applid, rparam);
 156         else
 157                 printk(KERN_WARNING "%s: cannot get card resources\n", __FUNCTION__);
 158 }
 159
 160
 161 static void release_appl(struct capi_ctr *card, u16 applid)
 162 {
 163         DBG("applid %#x", applid);
 164
 165         card->release_appl(card, applid);
 166         capi_ctr_put(card);
 167 }
 168
 169 /* -------- KCI_CONTRUP --------------------------------------- */
 170
 171 static void notify_up(u32 contr)
 172 {
 173         struct capi_ctr *card = get_capi_ctr_by_nr(contr);
 174         struct capi20_appl *ap;
 175         u16 applid;
 176
 177         if (showcapimsgs & 1) {
 178                 printk(KERN_DEBUG "kcapi: notify up contr %d\n", contr);
 179         }
 180         if (!card) {
 181                 printk(KERN_WARNING "%s: invalid contr %d\n", __FUNCTION__, contr);
 182                 return;
 183         }
 184         for (applid = 1; applid <= CAPI_MAXAPPL; applid++) {
 185                 ap = get_capi_appl_by_nr(applid);
 186                 if (!ap || ap->release_in_progress) continue;
 187                 register_appl(card, applid, &ap->rparam);
 188                 if (ap->callback && !ap->release_in_progress)
 189                         ap->callback(KCI_CONTRUP, contr, &card->profile);
 190         }
 191 }
 192
 193 /* -------- KCI_CONTRDOWN ------------------------------------- */
 194
 195 static void notify_down(u32 contr)
 196 {
 197         struct capi20_appl *ap;
 198         u16 applid;
 199
 200         if (showcapimsgs & 1) {
 201                 printk(KERN_DEBUG "kcapi: notify down contr %d\n", contr);
 202         }
 203
 204         for (applid = 1; applid <= CAPI_MAXAPPL; applid++) {
 205                 ap = get_capi_appl_by_nr(applid);
 206                 if (ap && ap->callback && !ap->release_in_progress)
 207                         ap->callback(KCI_CONTRDOWN, contr, NULL);
 208         }
 209 }
 210
 211 static void notify_handler(struct work_struct *work)
 212 {
 213         struct capi_notifier *np =
 214                 container_of(work, struct capi_notifier, work);
 215
 216         switch (np->cmd) {
 217         case KCI_CONTRUP:
 218                 notify_up(np->controller);
 219                 break;
 220         case KCI_CONTRDOWN:
 221                 notify_down(np->controller);
 222                 break;
 223         }
 224
 225         kfree(np);
 226 }
 227
 228 /*
 229  * The notifier will result in adding/deleteing of devices. Devices can
 230  * only removed in user process, not in bh.
 231  */
 232 static int notify_push(unsigned int cmd, u32 controller, u16 applid, u32 ncci)
 233 {
 234         struct capi_notifier *np = kmalloc(sizeof(*np), GFP_ATOMIC);
 235
 236         if (!np)
 237                 return -ENOMEM;
 238
 239         INIT_WORK(&np->work, notify_handler);
 240         np->cmd = cmd;
 241         np->controller = controller;
 242         np->applid = applid;
 243         np->ncci = ncci;
 244
 245         schedule_work(&np->work);
 246         return 0;
 247 }
 248
 249
 250 /* -------- Receiver ------------------------------------------ */
 251
 252 static void recv_handler(struct work_struct *work)
 253 {
 254         struct sk_buff *skb;
 255         struct capi20_appl *ap =
 256                 container_of(work, struct capi20_appl, recv_work);
 257
 258         if ((!ap) || (ap->release_in_progress))
 259                 return;
 260
 261         mutex_lock(&ap->recv_mtx);
 262         while ((skb = skb_dequeue(&ap->recv_queue))) {
 263                 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_IND)
 264                         ap->nrecvdatapkt++;
 265                 else
 266                         ap->nrecvctlpkt++;
 267
 268                 ap->recv_message(ap, skb);
 269         }
 270         mutex_unlock(&ap->recv_mtx);
 271 }
 272
 273 void capi_ctr_handle_message(struct capi_ctr * card, u16 appl, struct sk_buff *skb)
 274 {
 275         struct capi20_appl *ap;
 276         int showctl = 0;
 277         u8 cmd, subcmd;
 278         unsigned long flags;
 279         _cdebbuf *cdb;
 280
 281         if (card->cardstate != CARD_RUNNING) {
 282                 cdb = capi_message2str(skb->data);
 283                 if (cdb) {
 284                         printk(KERN_INFO "kcapi: controller [%03d] not active, got: %s",
 285                                 card->cnr, cdb->buf);
 286                         cdebbuf_free(cdb);
 287                 } else
 288                         printk(KERN_INFO "kcapi: controller [%03d] not active, cannot trace\n",
 289                                 card->cnr);
 290                 goto error;
 291         }
 292
 293         cmd = CAPIMSG_COMMAND(skb->data);
 294         subcmd = CAPIMSG_SUBCOMMAND(skb->data);
 295         if (cmd == CAPI_DATA_B3 && subcmd == CAPI_IND) {
 296                 card->nrecvdatapkt++;
 297                 if (card->traceflag > 2) showctl |= 2;
 298         } else {
 299                 card->nrecvctlpkt++;
 300                 if (card->traceflag) showctl |= 2;
 301         }
 302         showctl |= (card->traceflag & 1);
 303         if (showctl & 2) {
 304                 if (showctl & 1) {
 305                         printk(KERN_DEBUG "kcapi: got [%03d] id#%d %s len=%u\n",
 306                                card->cnr, CAPIMSG_APPID(skb->data),
 307                                capi_cmd2str(cmd, subcmd),
 308                                CAPIMSG_LEN(skb->data));
 309                 } else {
 310                         cdb = capi_message2str(skb->data);
 311                         if (cdb) {
 312                                 printk(KERN_DEBUG "kcapi: got [%03d] %s\n",
 313                                         card->cnr, cdb->buf);
 314                                 cdebbuf_free(cdb);
 315                         } else
 316                                 printk(KERN_DEBUG "kcapi: got [%03d] id#%d %s len=%u, cannot trace\n",
 317                                         card->cnr, CAPIMSG_APPID(skb->data),
 318                                         capi_cmd2str(cmd, subcmd),
 319                                         CAPIMSG_LEN(skb->data));
 320                 }
 321
 322         }
 323
 324         read_lock_irqsave(&application_lock, flags);
 325         ap = get_capi_appl_by_nr(CAPIMSG_APPID(skb->data));
 326         if ((!ap) || (ap->release_in_progress)) {
 327                 read_unlock_irqrestore(&application_lock, flags);
 328                 cdb = capi_message2str(skb->data);
 329                 if (cdb) {
 330                         printk(KERN_ERR "kcapi: handle_message: applid %d state released (%s)\n",
 331                         CAPIMSG_APPID(skb->data), cdb->buf);
 332                         cdebbuf_free(cdb);
 333                 } else
 334                         printk(KERN_ERR "kcapi: handle_message: applid %d state released (%s) cannot trace\n",
 335                                 CAPIMSG_APPID(skb->data),
 336                                 capi_cmd2str(cmd, subcmd));
 337                 goto error;
 338         }
 339         skb_queue_tail(&ap->recv_queue, skb);
 340         schedule_work(&ap->recv_work);
 341         read_unlock_irqrestore(&application_lock, flags);
 342
 343         return;
 344
 345 error:
 346         kfree_skb(skb);
 347 }
 348
 349 EXPORT_SYMBOL(capi_ctr_handle_message);
 350
 351 void capi_ctr_ready(struct capi_ctr * card)
 352 {
 353         card->cardstate = CARD_RUNNING;
 354
 355         printk(KERN_NOTICE "kcapi: card [%03d] \"%s\" ready.\n",
 356                card->cnr, card->name);
 357
 358         notify_push(KCI_CONTRUP, card->cnr, 0, 0);
 359 }
 360
 361 EXPORT_SYMBOL(capi_ctr_ready);
 362
 363 void capi_ctr_reseted(struct capi_ctr * card)
 364 {
 365         u16 appl;
 366
 367         DBG("");
 368
 369         if (card->cardstate == CARD_DETECTED)
 370                 return;
 371
 372         card->cardstate = CARD_DETECTED;
 373
 374         memset(card->manu, 0, sizeof(card->manu));
 375         memset(&card->version, 0, sizeof(card->version));
 376         memset(&card->profile, 0, sizeof(card->profile));
 377         memset(card->serial, 0, sizeof(card->serial));
 378
 379         for (appl = 1; appl <= CAPI_MAXAPPL; appl++) {
 380                 struct capi20_appl *ap = get_capi_appl_by_nr(appl);
 381                 if (!ap || ap->release_in_progress)
 382                         continue;
 383
 384                 capi_ctr_put(card);
 385         }
 386
 387         printk(KERN_NOTICE "kcapi: card [%03d] down.\n", card->cnr);
 388
 389         notify_push(KCI_CONTRDOWN, card->cnr, 0, 0);
 390 }
 391
 392 EXPORT_SYMBOL(capi_ctr_reseted);
 393
 394 void capi_ctr_suspend_output(struct capi_ctr *card)
 395 {
 396         if (!card->blocked) {
 397                 printk(KERN_DEBUG "kcapi: card [%03d] suspend\n", card->cnr);
 398                 card->blocked = 1;
 399         }
 400 }
 401
 402 EXPORT_SYMBOL(capi_ctr_suspend_output);
 403
 404 void capi_ctr_resume_output(struct capi_ctr *card)
 405 {
 406         if (card->blocked) {
 407                 printk(KERN_DEBUG "kcapi: card [%03d] resume\n", card->cnr);
 408                 card->blocked = 0;
 409         }
 410 }
 411
 412 EXPORT_SYMBOL(capi_ctr_resume_output);
 413
 414 /* ------------------------------------------------------------- */
 415
 416 int
 417 attach_capi_ctr(struct capi_ctr *card)
 418 {
 419         int i;
 420
 421         mutex_lock(&controller_mutex);
 422
 423         for (i = 0; i < CAPI_MAXCONTR; i++) {
 424                 if (capi_cards[i] == NULL)
 425                         break;
 426         }
 427         if (i == CAPI_MAXCONTR) {
 428                 mutex_unlock(&controller_mutex);
 429                 printk(KERN_ERR "kcapi: out of controller slots\n");
 430                 return -EBUSY;
 431         }
 432         capi_cards[i] = card;
 433
 434         mutex_unlock(&controller_mutex);
 435
 436         card->nrecvctlpkt = 0;
 437         card->nrecvdatapkt = 0;
 438         card->nsentctlpkt = 0;
 439         card->nsentdatapkt = 0;
 440         card->cnr = i + 1;
 441         card->cardstate = CARD_DETECTED;
 442         card->blocked = 0;
 443         card->traceflag = showcapimsgs;
 444
 445         sprintf(card->procfn, "capi/controllers/%d", card->cnr);
 446         card->procent = create_proc_entry(card->procfn, 0, NULL);
 447         if (card->procent) {
 448            card->procent->read_proc =
 449                 (int (*)(char *,char **,off_t,int,int *,void *))
 450                         card->ctr_read_proc;
 451            card->procent->data = card;
 452         }
 453
 454         ncards++;
 455         printk(KERN_NOTICE "kcapi: Controller [%03d]: %s attached\n",
 456                         card->cnr, card->name);
 457         return 0;
 458 }
 459
 460 EXPORT_SYMBOL(attach_capi_ctr);
 461
 462 int detach_capi_ctr(struct capi_ctr *card)
 463 {
 464         if (card->cardstate != CARD_DETECTED)
 465                 capi_ctr_reseted(card);
 466
 467         ncards--;
 468
 469         if (card->procent) {
 470            remove_proc_entry(card->procfn, NULL);
 471            card->procent = NULL;
 472         }
 473         capi_cards[card->cnr - 1] = NULL;
 474         printk(KERN_NOTICE "kcapi: Controller [%03d]: %s unregistered\n",
 475                         card->cnr, card->name);
 476
 477         return 0;
 478 }
 479
 480 EXPORT_SYMBOL(detach_capi_ctr);
 481
 482 void register_capi_driver(struct capi_driver *driver)
 483 {
 484         unsigned long flags;
 485
 486         write_lock_irqsave(&capi_drivers_list_lock, flags);
 487         list_add_tail(&driver->list, &capi_drivers);
 488         write_unlock_irqrestore(&capi_drivers_list_lock, flags);
 489 }
 490
 491 EXPORT_SYMBOL(register_capi_driver);
 492
 493 void unregister_capi_driver(struct capi_driver *driver)
 494 {
 495         unsigned long flags;
 496
 497         write_lock_irqsave(&capi_drivers_list_lock, flags);
 498         list_del(&driver->list);
 499         write_unlock_irqrestore(&capi_drivers_list_lock, flags);
 500 }
 501
 502 EXPORT_SYMBOL(unregister_capi_driver);
 503
 504 /* ------------------------------------------------------------- */
 505 /* -------- CAPI2.0 Interface ---------------------------------- */
 506 /* ------------------------------------------------------------- */
 507
 508 u16 capi20_isinstalled(void)
 509 {
 510         int i;
 511         for (i = 0; i < CAPI_MAXCONTR; i++) {
 512                 if (capi_cards[i] && capi_cards[i]->cardstate == CARD_RUNNING)
 513                         return CAPI_NOERROR;
 514         }
 515         return CAPI_REGNOTINSTALLED;
 516 }
 517
 518 EXPORT_SYMBOL(capi20_isinstalled);
 519
 520 u16 capi20_register(struct capi20_appl *ap)
 521 {
 522         int i;
 523         u16 applid;
 524         unsigned long flags;
 525
 526         DBG("");
 527
 528         if (ap->rparam.datablklen < 128)
 529                 return CAPI_LOGBLKSIZETOSMALL;
 530
 531         write_lock_irqsave(&application_lock, flags);
 532
 533         for (applid = 1; applid <= CAPI_MAXAPPL; applid++) {
 534                 if (capi_applications[applid - 1] == NULL)
 535                         break;
 536         }
 537         if (applid > CAPI_MAXAPPL) {
 538                 write_unlock_irqrestore(&application_lock, flags);
 539                 return CAPI_TOOMANYAPPLS;
 540         }
 541
 542         ap->applid = applid;
 543         capi_applications[applid - 1] = ap;
 544
 545         ap->nrecvctlpkt = 0;
 546         ap->nrecvdatapkt = 0;
 547         ap->nsentctlpkt = 0;
 548         ap->nsentdatapkt = 0;
 549         ap->callback = NULL;
 550         mutex_init(&ap->recv_mtx);
 551         skb_queue_head_init(&ap->recv_queue);
 552         INIT_WORK(&ap->recv_work, recv_handler);
 553         ap->release_in_progress = 0;
 554
 555         write_unlock_irqrestore(&application_lock, flags);
 556
 557         mutex_lock(&controller_mutex);
 558         for (i = 0; i < CAPI_MAXCONTR; i++) {
 559                 if (!capi_cards[i] || capi_cards[i]->cardstate != CARD_RUNNING)
 560                         continue;
 561                 register_appl(capi_cards[i], applid, &ap->rparam);
 562         }
 563         mutex_unlock(&controller_mutex);
 564
 565         if (showcapimsgs & 1) {
 566                 printk(KERN_DEBUG "kcapi: appl %d up\n", applid);
 567         }
 568
 569         return CAPI_NOERROR;
 570 }
 571
 572 EXPORT_SYMBOL(capi20_register);
 573
 574 u16 capi20_release(struct capi20_appl *ap)
 575 {
 576         int i;
 577         unsigned long flags;
 578
 579         DBG("applid %#x", ap->applid);
 580
 581         write_lock_irqsave(&application_lock, flags);
 582         ap->release_in_progress = 1;
 583         capi_applications[ap->applid - 1] = NULL;
 584         write_unlock_irqrestore(&application_lock, flags);
 585
 586         mutex_lock(&controller_mutex);
 587         for (i = 0; i < CAPI_MAXCONTR; i++) {
 588                 if (!capi_cards[i] || capi_cards[i]->cardstate != CARD_RUNNING)
 589                         continue;
 590                 release_appl(capi_cards[i], ap->applid);
 591         }
 592         mutex_unlock(&controller_mutex);
 593
 594         flush_scheduled_work();
 595         skb_queue_purge(&ap->recv_queue);
 596
 597         if (showcapimsgs & 1) {
 598                 printk(KERN_DEBUG "kcapi: appl %d down\n", ap->applid);
 599         }
 600
 601         return CAPI_NOERROR;
 602 }
 603
 604 EXPORT_SYMBOL(capi20_release);
 605
 606 u16 capi20_put_message(struct capi20_appl *ap, struct sk_buff *skb)
 607 {
 608         struct capi_ctr *card;
 609         int showctl = 0;
 610         u8 cmd, subcmd;
 611
 612         DBG("applid %#x", ap->applid);
 613
 614         if (ncards == 0)
 615                 return CAPI_REGNOTINSTALLED;
 616         if ((ap->applid == 0) || ap->release_in_progress)
 617                 return CAPI_ILLAPPNR;
 618         if (skb->len < 12
 619             || !capi_cmd_valid(CAPIMSG_COMMAND(skb->data))
 620             || !capi_subcmd_valid(CAPIMSG_SUBCOMMAND(skb->data)))
 621                 return CAPI_ILLCMDORSUBCMDORMSGTOSMALL;
 622         card = get_capi_ctr_by_nr(CAPIMSG_CONTROLLER(skb->data));
 623         if (!card || card->cardstate != CARD_RUNNING) {
 624                 card = get_capi_ctr_by_nr(1); // XXX why?
 625                 if (!card || card->cardstate != CARD_RUNNING)
 626                         return CAPI_REGNOTINSTALLED;
 627         }
 628         if (card->blocked)
 629                 return CAPI_SENDQUEUEFULL;
 630
 631         cmd = CAPIMSG_COMMAND(skb->data);
 632         subcmd = CAPIMSG_SUBCOMMAND(skb->data);
 633
 634         if (cmd == CAPI_DATA_B3 && subcmd== CAPI_REQ) {
 635                 card->nsentdatapkt++;
 636                 ap->nsentdatapkt++;
 637                 if (card->traceflag > 2) showctl |= 2;
 638         } else {
 639                 card->nsentctlpkt++;
 640                 ap->nsentctlpkt++;
 641                 if (card->traceflag) showctl |= 2;
 642         }
 643         showctl |= (card->traceflag & 1);
 644         if (showctl & 2) {
 645                 if (showctl & 1) {
 646                         printk(KERN_DEBUG "kcapi: put [%03d] id#%d %s len=%u\n",
 647                                CAPIMSG_CONTROLLER(skb->data),
 648                                CAPIMSG_APPID(skb->data),
 649                                capi_cmd2str(cmd, subcmd),
 650                                CAPIMSG_LEN(skb->data));
 651                 } else {
 652                         _cdebbuf *cdb = capi_message2str(skb->data);
 653                         if (cdb) {
 654                                 printk(KERN_DEBUG "kcapi: put [%03d] %s\n",
 655                                         CAPIMSG_CONTROLLER(skb->data),
 656                                         cdb->buf);
 657                                 cdebbuf_free(cdb);
 658                         } else
 659                                 printk(KERN_DEBUG "kcapi: put [%03d] id#%d %s len=%u cannot trace\n",
 660                                         CAPIMSG_CONTROLLER(skb->data),
 661                                         CAPIMSG_APPID(skb->data),
 662                                         capi_cmd2str(cmd, subcmd),
 663                                         CAPIMSG_LEN(skb->data));
 664                 }
 665         }
 666         return card->send_message(card, skb);
 667 }
 668
 669 EXPORT_SYMBOL(capi20_put_message);
 670
 671 u16 capi20_get_manufacturer(u32 contr, u8 *buf)
 672 {
 673         struct capi_ctr *card;
 674
 675         if (contr == 0) {
 676                 strlcpy(buf, capi_manufakturer, CAPI_MANUFACTURER_LEN);
 677                 return CAPI_NOERROR;
 678         }
 679         card = get_capi_ctr_by_nr(contr);
 680         if (!card || card->cardstate != CARD_RUNNING)
 681                 return CAPI_REGNOTINSTALLED;
 682         strlcpy(buf, card->manu, CAPI_MANUFACTURER_LEN);
 683         return CAPI_NOERROR;
 684 }
 685
 686 EXPORT_SYMBOL(capi20_get_manufacturer);
 687
 688 u16 capi20_get_version(u32 contr, struct capi_version *verp)
 689 {
 690         struct capi_ctr *card;
 691
 692         if (contr == 0) {
 693                 *verp = driver_version;
 694                 return CAPI_NOERROR;
 695         }
 696         card = get_capi_ctr_by_nr(contr);
 697         if (!card || card->cardstate != CARD_RUNNING)
 698                 return CAPI_REGNOTINSTALLED;
 699
 700         memcpy((void *) verp, &card->version, sizeof(capi_version));
 701         return CAPI_NOERROR;
 702 }
 703
 704 EXPORT_SYMBOL(capi20_get_version);
 705
 706 u16 capi20_get_serial(u32 contr, u8 *serial)
 707 {
 708         struct capi_ctr *card;
 709
 710         if (contr == 0) {
 711                 strlcpy(serial, driver_serial, CAPI_SERIAL_LEN);
 712                 return CAPI_NOERROR;
 713         }
 714         card = get_capi_ctr_by_nr(contr);
 715         if (!card || card->cardstate != CARD_RUNNING)
 716                 return CAPI_REGNOTINSTALLED;
 717
 718         strlcpy((void *) serial, card->serial, CAPI_SERIAL_LEN);
 719         return CAPI_NOERROR;
 720 }
 721
 722 EXPORT_SYMBOL(capi20_get_serial);
 723
 724 u16 capi20_get_profile(u32 contr, struct capi_profile *profp)
 725 {
 726         struct capi_ctr *card;
 727
 728         if (contr == 0) {
 729                 profp->ncontroller = ncards;
 730                 return CAPI_NOERROR;
 731         }
 732         card = get_capi_ctr_by_nr(contr);
 733         if (!card || card->cardstate != CARD_RUNNING)
 734                 return CAPI_REGNOTINSTALLED;
 735
 736         memcpy((void *) profp, &card->profile,
 737                         sizeof(struct capi_profile));
 738         return CAPI_NOERROR;
 739 }
 740
 741 EXPORT_SYMBOL(capi20_get_profile);
 742
 743 #ifdef CONFIG_AVMB1_COMPAT
 744 static int old_capi_manufacturer(unsigned int cmd, void __user *data)
 745 {
 746         avmb1_loadandconfigdef ldef;
 747         avmb1_extcarddef cdef;
 748         avmb1_resetdef rdef;
 749         capicardparams cparams;
 750         struct capi_ctr *card;
 751         struct capi_driver *driver = NULL;
 752         capiloaddata ldata;
 753         struct list_head *l;
 754         unsigned long flags;
 755         int retval;
 756
 757         switch (cmd) {
 758         case AVMB1_ADDCARD:
 759         case AVMB1_ADDCARD_WITH_TYPE:
 760                 if (cmd == AVMB1_ADDCARD) {
 761                    if ((retval = copy_from_user(&cdef, data,
 762                                             sizeof(avmb1_carddef))))
 763                            return retval;
 764                    cdef.cardtype = AVM_CARDTYPE_B1;
 765                 } else {
 766                    if ((retval = copy_from_user(&cdef, data,
 767                                             sizeof(avmb1_extcarddef))))
 768                            return retval;
 769                 }
 770                 cparams.port = cdef.port;
 771                 cparams.irq = cdef.irq;
 772                 cparams.cardnr = cdef.cardnr;
 773
 774                 read_lock_irqsave(&capi_drivers_list_lock, flags);
 775                 switch (cdef.cardtype) {
 776                         case AVM_CARDTYPE_B1:
 777                                 list_for_each(l, &capi_drivers) {
 778                                         driver = list_entry(l, struct capi_driver, list);
 779                                         if (strcmp(driver->name, "b1isa") == 0)
 780                                                 break;
 781                                 }
 782                                 break;
 783                         case AVM_CARDTYPE_T1:
 784                                 list_for_each(l, &capi_drivers) {
 785                                         driver = list_entry(l, struct capi_driver, list);
 786                                         if (strcmp(driver->name, "t1isa") == 0)
 787                                                 break;
 788                                 }
 789                                 break;
 790                         default:
 791                                 driver = NULL;
 792                                 break;
 793                 }
 794                 if (!driver) {
 795                         read_unlock_irqrestore(&capi_drivers_list_lock, flags);
 796                         printk(KERN_ERR "kcapi: driver not loaded.\n");
 797                         return -EIO;
 798                 }
 799                 if (!driver->add_card) {
 800                         read_unlock_irqrestore(&capi_drivers_list_lock, flags);
 801                         printk(KERN_ERR "kcapi: driver has no add card function.\n");
 802                         return -EIO;
 803                 }
 804
 805                 retval = driver->add_card(driver, &cparams);
 806                 read_unlock_irqrestore(&capi_drivers_list_lock, flags);
 807                 return retval;
 808
 809         case AVMB1_LOAD:
 810         case AVMB1_LOAD_AND_CONFIG:
 811
 812                 if (cmd == AVMB1_LOAD) {
 813                         if (copy_from_user(&ldef, data,
 814                                            sizeof(avmb1_loaddef)))
 815                                 return -EFAULT;
 816                         ldef.t4config.len = 0;
 817                         ldef.t4config.data = NULL;
 818                 } else {
 819                         if (copy_from_user(&ldef, data,
 820                                            sizeof(avmb1_loadandconfigdef)))
 821                                 return -EFAULT;
 822                 }
 823                 card = get_capi_ctr_by_nr(ldef.contr);
 824                 if (!card)
 825                         return -EINVAL;
 826                 card = capi_ctr_get(card);
 827                 if (!card)
 828                         return -ESRCH;
 829                 if (card->load_firmware == 0) {
 830                         printk(KERN_DEBUG "kcapi: load: no load function\n");
 831                         return -ESRCH;
 832                 }
 833
 834                 if (ldef.t4file.len <= 0) {
 835                         printk(KERN_DEBUG "kcapi: load: invalid parameter: length of t4file is %d ?\n", ldef.t4file.len);
 836                         return -EINVAL;
 837                 }
 838                 if (ldef.t4file.data == 0) {
 839                         printk(KERN_DEBUG "kcapi: load: invalid parameter: dataptr is 0\n");
 840                         return -EINVAL;
 841                 }
 842
 843                 ldata.firmware.user = 1;
 844                 ldata.firmware.data = ldef.t4file.data;
 845                 ldata.firmware.len = ldef.t4file.len;
 846                 ldata.configuration.user = 1;
 847                 ldata.configuration.data = ldef.t4config.data;
 848                 ldata.configuration.len = ldef.t4config.len;
 849
 850                 if (card->cardstate != CARD_DETECTED) {
 851                         printk(KERN_INFO "kcapi: load: contr=%d not in detect state\n", ldef.contr);
 852                         return -EBUSY;
 853                 }
 854                 card->cardstate = CARD_LOADING;
 855
 856                 retval = card->load_firmware(card, &ldata);
 857
 858                 if (retval) {
 859                         card->cardstate = CARD_DETECTED;
 860                         capi_ctr_put(card);
 861                         return retval;
 862                 }
 863
 864                 while (card->cardstate != CARD_RUNNING) {
 865
 866                         msleep_interruptible(100);      /* 0.1 sec */
 867
 868                         if (signal_pending(current)) {
 869                                 capi_ctr_put(card);
 870                                 return -EINTR;
 871                         }
 872                 }
 873                 capi_ctr_put(card);
 874                 return 0;
 875
 876         case AVMB1_RESETCARD:
 877                 if (copy_from_user(&rdef, data, sizeof(avmb1_resetdef)))
 878                         return -EFAULT;
 879                 card = get_capi_ctr_by_nr(rdef.contr);
 880                 if (!card)
 881                         return -ESRCH;
 882
 883                 if (card->cardstate == CARD_DETECTED)
 884                         return 0;
 885
 886                 card->reset_ctr(card);
 887
 888                 while (card->cardstate > CARD_DETECTED) {
 889
 890                         msleep_interruptible(100);      /* 0.1 sec */
 891
 892                         if (signal_pending(current))
 893                                 return -EINTR;
 894                 }
 895                 return 0;
 896
 897         }
 898         return -EINVAL;
 899 }
 900 #endif
 901
 902 int capi20_manufacturer(unsigned int cmd, void __user *data)
 903 {
 904         struct capi_ctr *card;
 905
 906         switch (cmd) {
 907 #ifdef CONFIG_AVMB1_COMPAT
 908         case AVMB1_LOAD:
 909         case AVMB1_LOAD_AND_CONFIG:
 910         case AVMB1_RESETCARD:
 911         case AVMB1_GET_CARDINFO:
 912         case AVMB1_REMOVECARD:
 913                 return old_capi_manufacturer(cmd, data);
 914 #endif
 915         case KCAPI_CMD_TRACE:
 916         {
 917                 kcapi_flagdef fdef;
 918
 919                 if (copy_from_user(&fdef, data, sizeof(kcapi_flagdef)))
 920                         return -EFAULT;
 921
 922                 card = get_capi_ctr_by_nr(fdef.contr);
 923                 if (!card)
 924                         return -ESRCH;
 925
 926                 card->traceflag = fdef.flag;
 927                 printk(KERN_INFO "kcapi: contr [%03d] set trace=%d\n",
 928                         card->cnr, card->traceflag);
 929                 return 0;
 930         }
 931         case KCAPI_CMD_ADDCARD:
 932         {
 933                 struct list_head *l;
 934                 struct capi_driver *driver = NULL;
 935                 capicardparams cparams;
 936                 kcapi_carddef cdef;
 937                 int retval;
 938
 939                 if ((retval = copy_from_user(&cdef, data, sizeof(cdef))))
 940                         return retval;
 941
 942                 cparams.port = cdef.port;
 943                 cparams.irq = cdef.irq;
 944                 cparams.membase = cdef.membase;
 945                 cparams.cardnr = cdef.cardnr;
 946                 cparams.cardtype = 0;
 947                 cdef.driver[sizeof(cdef.driver)-1] = 0;
 948
 949                 list_for_each(l, &capi_drivers) {
 950                         driver = list_entry(l, struct capi_driver, list);
 951                         if (strcmp(driver->name, cdef.driver) == 0)
 952                                 break;
 953                 }
 954                 if (driver == 0) {
 955                         printk(KERN_ERR "kcapi: driver \"%s\" not loaded.\n",
 956                                         cdef.driver);
 957                         return -ESRCH;
 958                 }
 959
 960                 if (!driver->add_card) {
 961                         printk(KERN_ERR "kcapi: driver \"%s\" has no add card function.\n", cdef.driver);
 962                         return -EIO;
 963                 }
 964
 965                 return driver->add_card(driver, &cparams);
 966         }
 967
 968         default:
 969                 printk(KERN_ERR "kcapi: manufacturer command %d unknown.\n",
 970                                         cmd);
 971                 break;
 972
 973         }
 974         return -EINVAL;
 975 }
 976
 977 EXPORT_SYMBOL(capi20_manufacturer);
 978
 979 /* temporary hack */
 980 void capi20_set_callback(struct capi20_appl *ap,
 981                          void (*callback) (unsigned int cmd, __u32 contr, void *data))
 982 {
 983         ap->callback = callback;
 984 }
 985
 986 EXPORT_SYMBOL(capi20_set_callback);
 987
 988 /* ------------------------------------------------------------- */
 989 /* -------- Init & Cleanup ------------------------------------- */
 990 /* ------------------------------------------------------------- */
 991
 992 /*
 993  * init / exit functions
 994  */
 995
 996 static int __init kcapi_init(void)
 997 {
 998         char *p;
 999         char rev[32];
1000         int ret;
1001
1002         ret = cdebug_init();
1003         if (ret)
1004                 return ret;
1005         kcapi_proc_init();
1006
1007         if ((p = strchr(revision, ':')) != 0 && p[1]) {
1008                 strlcpy(rev, p + 2, sizeof(rev));
1009                 if ((p = strchr(rev, '$')) != 0 && p > rev)
1010                    *(p-1) = 0;
1011         } else
1012                 strcpy(rev, "1.0");
1013
1014         printk(KERN_NOTICE "CAPI Subsystem Rev %s\n", rev);
1015
1016         return 0;
1017 }
1018
1019 static void __exit kcapi_exit(void)
1020 {
1021         kcapi_proc_exit();
1022
1023         /* make sure all notifiers are finished */
1024         flush_scheduled_work();
1025         cdebug_exit();
1026 }
1027
1028 module_init(kcapi_init);
1029 module_exit(kcapi_exit);