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   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(void *data)
 212 {
 213         struct capi_notifier *np = data;
 214
 215         switch (np->cmd) {
 216         case KCI_CONTRUP:
 217                 notify_up(np->controller);
 218                 break;
 219         case KCI_CONTRDOWN:
 220                 notify_down(np->controller);
 221                 break;
 222         }
 223
 224         kfree(np);
 225 }
 226
 227 /*
 228  * The notifier will result in adding/deleteing of devices. Devices can
 229  * only removed in user process, not in bh.
 230  */
 231 static int notify_push(unsigned int cmd, u32 controller, u16 applid, u32 ncci)
 232 {
 233         struct capi_notifier *np = kmalloc(sizeof(*np), GFP_ATOMIC);
 234
 235         if (!np)
 236                 return -ENOMEM;
 237
 238         INIT_WORK(&np->work, notify_handler, np);
 239         np->cmd = cmd;
 240         np->controller = controller;
 241         np->applid = applid;
 242         np->ncci = ncci;
 243
 244         schedule_work(&np->work);
 245         return 0;
 246 }
 247
 248
 249 /* -------- Receiver ------------------------------------------ */
 250
 251 static void recv_handler(void *_ap)
 252 {
 253         struct sk_buff *skb;
 254         struct capi20_appl *ap = (struct capi20_appl *) _ap;
 255
 256         if ((!ap) || (ap->release_in_progress))
 257                 return;
 258
 259         down(&ap->recv_sem);
 260         while ((skb = skb_dequeue(&ap->recv_queue))) {
 261                 if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_IND)
 262                         ap->nrecvdatapkt++;
 263                 else
 264                         ap->nrecvctlpkt++;
 265
 266                 ap->recv_message(ap, skb);
 267         }
 268         up(&ap->recv_sem);
 269 }
 270
 271 void capi_ctr_handle_message(struct capi_ctr * card, u16 appl, struct sk_buff *skb)
 272 {
 273         struct capi20_appl *ap;
 274         int showctl = 0;
 275         u8 cmd, subcmd;
 276         unsigned long flags;
 277
 278         if (card->cardstate != CARD_RUNNING) {
 279                 printk(KERN_INFO "kcapi: controller %d not active, got: %s",
 280                        card->cnr, capi_message2str(skb->data));
 281                 goto error;
 282         }
 283
 284         cmd = CAPIMSG_COMMAND(skb->data);
 285         subcmd = CAPIMSG_SUBCOMMAND(skb->data);
 286         if (cmd == CAPI_DATA_B3 && subcmd == CAPI_IND) {
 287                 card->nrecvdatapkt++;
 288                 if (card->traceflag > 2) showctl |= 2;
 289         } else {
 290                 card->nrecvctlpkt++;
 291                 if (card->traceflag) showctl |= 2;
 292         }
 293         showctl |= (card->traceflag & 1);
 294         if (showctl & 2) {
 295                 if (showctl & 1) {
 296                         printk(KERN_DEBUG "kcapi: got [0x%lx] id#%d %s len=%u\n",
 297                                (unsigned long) card->cnr,
 298                                CAPIMSG_APPID(skb->data),
 299                                capi_cmd2str(cmd, subcmd),
 300                                CAPIMSG_LEN(skb->data));
 301                 } else {
 302                         printk(KERN_DEBUG "kcapi: got [0x%lx] %s\n",
 303                                         (unsigned long) card->cnr,
 304                                         capi_message2str(skb->data));
 305                 }
 306
 307         }
 308
 309         read_lock_irqsave(&application_lock, flags);
 310         ap = get_capi_appl_by_nr(CAPIMSG_APPID(skb->data));
 311         if ((!ap) || (ap->release_in_progress)) {
 312                 read_unlock_irqrestore(&application_lock, flags);
 313                 printk(KERN_ERR "kcapi: handle_message: applid %d state released (%s)\n",
 314                         CAPIMSG_APPID(skb->data), capi_message2str(skb->data));
 315                 goto error;
 316         }
 317         skb_queue_tail(&ap->recv_queue, skb);
 318         schedule_work(&ap->recv_work);
 319         read_unlock_irqrestore(&application_lock, flags);
 320
 321         return;
 322
 323 error:
 324         kfree_skb(skb);
 325 }
 326
 327 EXPORT_SYMBOL(capi_ctr_handle_message);
 328
 329 void capi_ctr_ready(struct capi_ctr * card)
 330 {
 331         card->cardstate = CARD_RUNNING;
 332
 333         printk(KERN_NOTICE "kcapi: card %d \"%s\" ready.\n",
 334                card->cnr, card->name);
 335
 336         notify_push(KCI_CONTRUP, card->cnr, 0, 0);
 337 }
 338
 339 EXPORT_SYMBOL(capi_ctr_ready);
 340
 341 void capi_ctr_reseted(struct capi_ctr * card)
 342 {
 343         u16 appl;
 344
 345         DBG("");
 346
 347         if (card->cardstate == CARD_DETECTED)
 348                 return;
 349
 350         card->cardstate = CARD_DETECTED;
 351
 352         memset(card->manu, 0, sizeof(card->manu));
 353         memset(&card->version, 0, sizeof(card->version));
 354         memset(&card->profile, 0, sizeof(card->profile));
 355         memset(card->serial, 0, sizeof(card->serial));
 356
 357         for (appl = 1; appl <= CAPI_MAXAPPL; appl++) {
 358                 struct capi20_appl *ap = get_capi_appl_by_nr(appl);
 359                 if (!ap || ap->release_in_progress)
 360                         continue;
 361
 362                 capi_ctr_put(card);
 363         }
 364
 365         printk(KERN_NOTICE "kcapi: card %d down.\n", card->cnr);
 366
 367         notify_push(KCI_CONTRDOWN, card->cnr, 0, 0);
 368 }
 369
 370 EXPORT_SYMBOL(capi_ctr_reseted);
 371
 372 void capi_ctr_suspend_output(struct capi_ctr *card)
 373 {
 374         if (!card->blocked) {
 375                 printk(KERN_DEBUG "kcapi: card %d suspend\n", card->cnr);
 376                 card->blocked = 1;
 377         }
 378 }
 379
 380 EXPORT_SYMBOL(capi_ctr_suspend_output);
 381
 382 void capi_ctr_resume_output(struct capi_ctr *card)
 383 {
 384         if (card->blocked) {
 385                 printk(KERN_DEBUG "kcapi: card %d resume\n", card->cnr);
 386                 card->blocked = 0;
 387         }
 388 }
 389
 390 EXPORT_SYMBOL(capi_ctr_resume_output);
 391
 392 /* ------------------------------------------------------------- */
 393
 394 int
 395 attach_capi_ctr(struct capi_ctr *card)
 396 {
 397         int i;
 398
 399         mutex_lock(&controller_mutex);
 400
 401         for (i = 0; i < CAPI_MAXCONTR; i++) {
 402                 if (capi_cards[i] == NULL)
 403                         break;
 404         }
 405         if (i == CAPI_MAXCONTR) {
 406                 mutex_unlock(&controller_mutex);
 407                 printk(KERN_ERR "kcapi: out of controller slots\n");
 408                 return -EBUSY;
 409         }
 410         capi_cards[i] = card;
 411
 412         mutex_unlock(&controller_mutex);
 413
 414         card->nrecvctlpkt = 0;
 415         card->nrecvdatapkt = 0;
 416         card->nsentctlpkt = 0;
 417         card->nsentdatapkt = 0;
 418         card->cnr = i + 1;
 419         card->cardstate = CARD_DETECTED;
 420         card->blocked = 0;
 421         card->traceflag = showcapimsgs;
 422
 423         sprintf(card->procfn, "capi/controllers/%d", card->cnr);
 424         card->procent = create_proc_entry(card->procfn, 0, NULL);
 425         if (card->procent) {
 426            card->procent->read_proc =
 427                 (int (*)(char *,char **,off_t,int,int *,void *))
 428                         card->ctr_read_proc;
 429            card->procent->data = card;
 430         }
 431
 432         ncards++;
 433         printk(KERN_NOTICE "kcapi: Controller %d: %s attached\n",
 434                         card->cnr, card->name);
 435         return 0;
 436 }
 437
 438 EXPORT_SYMBOL(attach_capi_ctr);
 439
 440 int detach_capi_ctr(struct capi_ctr *card)
 441 {
 442         if (card->cardstate != CARD_DETECTED)
 443                 capi_ctr_reseted(card);
 444
 445         ncards--;
 446
 447         if (card->procent) {
 448            remove_proc_entry(card->procfn, NULL);
 449            card->procent = NULL;
 450         }
 451         capi_cards[card->cnr - 1] = NULL;
 452         printk(KERN_NOTICE "kcapi: Controller %d: %s unregistered\n",
 453                         card->cnr, card->name);
 454
 455         return 0;
 456 }
 457
 458 EXPORT_SYMBOL(detach_capi_ctr);
 459
 460 void register_capi_driver(struct capi_driver *driver)
 461 {
 462         unsigned long flags;
 463
 464         write_lock_irqsave(&capi_drivers_list_lock, flags);
 465         list_add_tail(&driver->list, &capi_drivers);
 466         write_unlock_irqrestore(&capi_drivers_list_lock, flags);
 467 }
 468
 469 EXPORT_SYMBOL(register_capi_driver);
 470
 471 void unregister_capi_driver(struct capi_driver *driver)
 472 {
 473         unsigned long flags;
 474
 475         write_lock_irqsave(&capi_drivers_list_lock, flags);
 476         list_del(&driver->list);
 477         write_unlock_irqrestore(&capi_drivers_list_lock, flags);
 478 }
 479
 480 EXPORT_SYMBOL(unregister_capi_driver);
 481
 482 /* ------------------------------------------------------------- */
 483 /* -------- CAPI2.0 Interface ---------------------------------- */
 484 /* ------------------------------------------------------------- */
 485
 486 u16 capi20_isinstalled(void)
 487 {
 488         int i;
 489         for (i = 0; i < CAPI_MAXCONTR; i++) {
 490                 if (capi_cards[i] && capi_cards[i]->cardstate == CARD_RUNNING)
 491                         return CAPI_NOERROR;
 492         }
 493         return CAPI_REGNOTINSTALLED;
 494 }
 495
 496 EXPORT_SYMBOL(capi20_isinstalled);
 497
 498 u16 capi20_register(struct capi20_appl *ap)
 499 {
 500         int i;
 501         u16 applid;
 502         unsigned long flags;
 503
 504         DBG("");
 505
 506         if (ap->rparam.datablklen < 128)
 507                 return CAPI_LOGBLKSIZETOSMALL;
 508
 509         write_lock_irqsave(&application_lock, flags);
 510
 511         for (applid = 1; applid <= CAPI_MAXAPPL; applid++) {
 512                 if (capi_applications[applid - 1] == NULL)
 513                         break;
 514         }
 515         if (applid > CAPI_MAXAPPL) {
 516                 write_unlock_irqrestore(&application_lock, flags);
 517                 return CAPI_TOOMANYAPPLS;
 518         }
 519
 520         ap->applid = applid;
 521         capi_applications[applid - 1] = ap;
 522
 523         ap->nrecvctlpkt = 0;
 524         ap->nrecvdatapkt = 0;
 525         ap->nsentctlpkt = 0;
 526         ap->nsentdatapkt = 0;
 527         ap->callback = NULL;
 528         init_MUTEX(&ap->recv_sem);
 529         skb_queue_head_init(&ap->recv_queue);
 530         INIT_WORK(&ap->recv_work, recv_handler, (void *)ap);
 531         ap->release_in_progress = 0;
 532
 533         write_unlock_irqrestore(&application_lock, flags);
 534
 535         mutex_lock(&controller_mutex);
 536         for (i = 0; i < CAPI_MAXCONTR; i++) {
 537                 if (!capi_cards[i] || capi_cards[i]->cardstate != CARD_RUNNING)
 538                         continue;
 539                 register_appl(capi_cards[i], applid, &ap->rparam);
 540         }
 541         mutex_unlock(&controller_mutex);
 542
 543         if (showcapimsgs & 1) {
 544                 printk(KERN_DEBUG "kcapi: appl %d up\n", applid);
 545         }
 546
 547         return CAPI_NOERROR;
 548 }
 549
 550 EXPORT_SYMBOL(capi20_register);
 551
 552 u16 capi20_release(struct capi20_appl *ap)
 553 {
 554         int i;
 555         unsigned long flags;
 556
 557         DBG("applid %#x", ap->applid);
 558
 559         write_lock_irqsave(&application_lock, flags);
 560         ap->release_in_progress = 1;
 561         capi_applications[ap->applid - 1] = NULL;
 562         write_unlock_irqrestore(&application_lock, flags);
 563
 564         mutex_lock(&controller_mutex);
 565         for (i = 0; i < CAPI_MAXCONTR; i++) {
 566                 if (!capi_cards[i] || capi_cards[i]->cardstate != CARD_RUNNING)
 567                         continue;
 568                 release_appl(capi_cards[i], ap->applid);
 569         }
 570         mutex_unlock(&controller_mutex);
 571
 572         flush_scheduled_work();
 573         skb_queue_purge(&ap->recv_queue);
 574
 575         if (showcapimsgs & 1) {
 576                 printk(KERN_DEBUG "kcapi: appl %d down\n", ap->applid);
 577         }
 578
 579         return CAPI_NOERROR;
 580 }
 581
 582 EXPORT_SYMBOL(capi20_release);
 583
 584 u16 capi20_put_message(struct capi20_appl *ap, struct sk_buff *skb)
 585 {
 586         struct capi_ctr *card;
 587         int showctl = 0;
 588         u8 cmd, subcmd;
 589
 590         DBG("applid %#x", ap->applid);
 591
 592         if (ncards == 0)
 593                 return CAPI_REGNOTINSTALLED;
 594         if ((ap->applid == 0) || ap->release_in_progress)
 595                 return CAPI_ILLAPPNR;
 596         if (skb->len < 12
 597             || !capi_cmd_valid(CAPIMSG_COMMAND(skb->data))
 598             || !capi_subcmd_valid(CAPIMSG_SUBCOMMAND(skb->data)))
 599                 return CAPI_ILLCMDORSUBCMDORMSGTOSMALL;
 600         card = get_capi_ctr_by_nr(CAPIMSG_CONTROLLER(skb->data));
 601         if (!card || card->cardstate != CARD_RUNNING) {
 602                 card = get_capi_ctr_by_nr(1); // XXX why?
 603                 if (!card || card->cardstate != CARD_RUNNING)
 604                         return CAPI_REGNOTINSTALLED;
 605         }
 606         if (card->blocked)
 607                 return CAPI_SENDQUEUEFULL;
 608
 609         cmd = CAPIMSG_COMMAND(skb->data);
 610         subcmd = CAPIMSG_SUBCOMMAND(skb->data);
 611
 612         if (cmd == CAPI_DATA_B3 && subcmd== CAPI_REQ) {
 613                 card->nsentdatapkt++;
 614                 ap->nsentdatapkt++;
 615                 if (card->traceflag > 2) showctl |= 2;
 616         } else {
 617                 card->nsentctlpkt++;
 618                 ap->nsentctlpkt++;
 619                 if (card->traceflag) showctl |= 2;
 620         }
 621         showctl |= (card->traceflag & 1);
 622         if (showctl & 2) {
 623                 if (showctl & 1) {
 624                         printk(KERN_DEBUG "kcapi: put [%#x] id#%d %s len=%u\n",
 625                                CAPIMSG_CONTROLLER(skb->data),
 626                                CAPIMSG_APPID(skb->data),
 627                                capi_cmd2str(cmd, subcmd),
 628                                CAPIMSG_LEN(skb->data));
 629                 } else {
 630                         printk(KERN_DEBUG "kcapi: put [%#x] %s\n",
 631                                CAPIMSG_CONTROLLER(skb->data),
 632                                capi_message2str(skb->data));
 633                 }
 634
 635         }
 636         return card->send_message(card, skb);
 637 }
 638
 639 EXPORT_SYMBOL(capi20_put_message);
 640
 641 u16 capi20_get_manufacturer(u32 contr, u8 *buf)
 642 {
 643         struct capi_ctr *card;
 644
 645         if (contr == 0) {
 646                 strlcpy(buf, capi_manufakturer, CAPI_MANUFACTURER_LEN);
 647                 return CAPI_NOERROR;
 648         }
 649         card = get_capi_ctr_by_nr(contr);
 650         if (!card || card->cardstate != CARD_RUNNING)
 651                 return CAPI_REGNOTINSTALLED;
 652         strlcpy(buf, card->manu, CAPI_MANUFACTURER_LEN);
 653         return CAPI_NOERROR;
 654 }
 655
 656 EXPORT_SYMBOL(capi20_get_manufacturer);
 657
 658 u16 capi20_get_version(u32 contr, struct capi_version *verp)
 659 {
 660         struct capi_ctr *card;
 661
 662         if (contr == 0) {
 663                 *verp = driver_version;
 664                 return CAPI_NOERROR;
 665         }
 666         card = get_capi_ctr_by_nr(contr);
 667         if (!card || card->cardstate != CARD_RUNNING)
 668                 return CAPI_REGNOTINSTALLED;
 669
 670         memcpy((void *) verp, &card->version, sizeof(capi_version));
 671         return CAPI_NOERROR;
 672 }
 673
 674 EXPORT_SYMBOL(capi20_get_version);
 675
 676 u16 capi20_get_serial(u32 contr, u8 *serial)
 677 {
 678         struct capi_ctr *card;
 679
 680         if (contr == 0) {
 681                 strlcpy(serial, driver_serial, CAPI_SERIAL_LEN);
 682                 return CAPI_NOERROR;
 683         }
 684         card = get_capi_ctr_by_nr(contr);
 685         if (!card || card->cardstate != CARD_RUNNING)
 686                 return CAPI_REGNOTINSTALLED;
 687
 688         strlcpy((void *) serial, card->serial, CAPI_SERIAL_LEN);
 689         return CAPI_NOERROR;
 690 }
 691
 692 EXPORT_SYMBOL(capi20_get_serial);
 693
 694 u16 capi20_get_profile(u32 contr, struct capi_profile *profp)
 695 {
 696         struct capi_ctr *card;
 697
 698         if (contr == 0) {
 699                 profp->ncontroller = ncards;
 700                 return CAPI_NOERROR;
 701         }
 702         card = get_capi_ctr_by_nr(contr);
 703         if (!card || card->cardstate != CARD_RUNNING)
 704                 return CAPI_REGNOTINSTALLED;
 705
 706         memcpy((void *) profp, &card->profile,
 707                         sizeof(struct capi_profile));
 708         return CAPI_NOERROR;
 709 }
 710
 711 EXPORT_SYMBOL(capi20_get_profile);
 712
 713 #ifdef CONFIG_AVMB1_COMPAT
 714 static int old_capi_manufacturer(unsigned int cmd, void __user *data)
 715 {
 716         avmb1_loadandconfigdef ldef;
 717         avmb1_extcarddef cdef;
 718         avmb1_resetdef rdef;
 719         capicardparams cparams;
 720         struct capi_ctr *card;
 721         struct capi_driver *driver = NULL;
 722         capiloaddata ldata;
 723         struct list_head *l;
 724         unsigned long flags;
 725         int retval;
 726
 727         switch (cmd) {
 728         case AVMB1_ADDCARD:
 729         case AVMB1_ADDCARD_WITH_TYPE:
 730                 if (cmd == AVMB1_ADDCARD) {
 731                    if ((retval = copy_from_user(&cdef, data,
 732                                             sizeof(avmb1_carddef))))
 733                            return retval;
 734                    cdef.cardtype = AVM_CARDTYPE_B1;
 735                 } else {
 736                    if ((retval = copy_from_user(&cdef, data,
 737                                             sizeof(avmb1_extcarddef))))
 738                            return retval;
 739                 }
 740                 cparams.port = cdef.port;
 741                 cparams.irq = cdef.irq;
 742                 cparams.cardnr = cdef.cardnr;
 743
 744                 read_lock_irqsave(&capi_drivers_list_lock, flags);
 745                 switch (cdef.cardtype) {
 746                         case AVM_CARDTYPE_B1:
 747                                 list_for_each(l, &capi_drivers) {
 748                                         driver = list_entry(l, struct capi_driver, list);
 749                                         if (strcmp(driver->name, "b1isa") == 0)
 750                                                 break;
 751                                 }
 752                                 break;
 753                         case AVM_CARDTYPE_T1:
 754                                 list_for_each(l, &capi_drivers) {
 755                                         driver = list_entry(l, struct capi_driver, list);
 756                                         if (strcmp(driver->name, "t1isa") == 0)
 757                                                 break;
 758                                 }
 759                                 break;
 760                         default:
 761                                 driver = NULL;
 762                                 break;
 763                 }
 764                 if (!driver) {
 765                         read_unlock_irqrestore(&capi_drivers_list_lock, flags);
 766                         printk(KERN_ERR "kcapi: driver not loaded.\n");
 767                         return -EIO;
 768                 }
 769                 if (!driver->add_card) {
 770                         read_unlock_irqrestore(&capi_drivers_list_lock, flags);
 771                         printk(KERN_ERR "kcapi: driver has no add card function.\n");
 772                         return -EIO;
 773                 }
 774
 775                 retval = driver->add_card(driver, &cparams);
 776                 read_unlock_irqrestore(&capi_drivers_list_lock, flags);
 777                 return retval;
 778
 779         case AVMB1_LOAD:
 780         case AVMB1_LOAD_AND_CONFIG:
 781
 782                 if (cmd == AVMB1_LOAD) {
 783                         if (copy_from_user(&ldef, data,
 784                                            sizeof(avmb1_loaddef)))
 785                                 return -EFAULT;
 786                         ldef.t4config.len = 0;
 787                         ldef.t4config.data = NULL;
 788                 } else {
 789                         if (copy_from_user(&ldef, data,
 790                                            sizeof(avmb1_loadandconfigdef)))
 791                                 return -EFAULT;
 792                 }
 793                 card = get_capi_ctr_by_nr(ldef.contr);
 794                 card = capi_ctr_get(card);
 795                 if (!card)
 796                         return -ESRCH;
 797                 if (card->load_firmware == 0) {
 798                         printk(KERN_DEBUG "kcapi: load: no load function\n");
 799                         return -ESRCH;
 800                 }
 801
 802                 if (ldef.t4file.len <= 0) {
 803                         printk(KERN_DEBUG "kcapi: load: invalid parameter: length of t4file is %d ?\n", ldef.t4file.len);
 804                         return -EINVAL;
 805                 }
 806                 if (ldef.t4file.data == 0) {
 807                         printk(KERN_DEBUG "kcapi: load: invalid parameter: dataptr is 0\n");
 808                         return -EINVAL;
 809                 }
 810
 811                 ldata.firmware.user = 1;
 812                 ldata.firmware.data = ldef.t4file.data;
 813                 ldata.firmware.len = ldef.t4file.len;
 814                 ldata.configuration.user = 1;
 815                 ldata.configuration.data = ldef.t4config.data;
 816                 ldata.configuration.len = ldef.t4config.len;
 817
 818                 if (card->cardstate != CARD_DETECTED) {
 819                         printk(KERN_INFO "kcapi: load: contr=%d not in detect state\n", ldef.contr);
 820                         return -EBUSY;
 821                 }
 822                 card->cardstate = CARD_LOADING;
 823
 824                 retval = card->load_firmware(card, &ldata);
 825
 826                 if (retval) {
 827                         card->cardstate = CARD_DETECTED;
 828                         capi_ctr_put(card);
 829                         return retval;
 830                 }
 831
 832                 while (card->cardstate != CARD_RUNNING) {
 833
 834                         msleep_interruptible(100);      /* 0.1 sec */
 835
 836                         if (signal_pending(current)) {
 837                                 capi_ctr_put(card);
 838                                 return -EINTR;
 839                         }
 840                 }
 841                 capi_ctr_put(card);
 842                 return 0;
 843
 844         case AVMB1_RESETCARD:
 845                 if (copy_from_user(&rdef, data, sizeof(avmb1_resetdef)))
 846                         return -EFAULT;
 847                 card = get_capi_ctr_by_nr(rdef.contr);
 848                 if (!card)
 849                         return -ESRCH;
 850
 851                 if (card->cardstate == CARD_DETECTED)
 852                         return 0;
 853
 854                 card->reset_ctr(card);
 855
 856                 while (card->cardstate > CARD_DETECTED) {
 857
 858                         msleep_interruptible(100);      /* 0.1 sec */
 859
 860                         if (signal_pending(current))
 861                                 return -EINTR;
 862                 }
 863                 return 0;
 864
 865         }
 866         return -EINVAL;
 867 }
 868 #endif
 869
 870 int capi20_manufacturer(unsigned int cmd, void __user *data)
 871 {
 872         struct capi_ctr *card;
 873
 874         switch (cmd) {
 875 #ifdef CONFIG_AVMB1_COMPAT
 876         case AVMB1_LOAD:
 877         case AVMB1_LOAD_AND_CONFIG:
 878         case AVMB1_RESETCARD:
 879         case AVMB1_GET_CARDINFO:
 880         case AVMB1_REMOVECARD:
 881                 return old_capi_manufacturer(cmd, data);
 882 #endif
 883         case KCAPI_CMD_TRACE:
 884         {
 885                 kcapi_flagdef fdef;
 886
 887                 if (copy_from_user(&fdef, data, sizeof(kcapi_flagdef)))
 888                         return -EFAULT;
 889
 890                 card = get_capi_ctr_by_nr(fdef.contr);
 891                 if (!card)
 892                         return -ESRCH;
 893
 894                 card->traceflag = fdef.flag;
 895                 printk(KERN_INFO "kcapi: contr %d set trace=%d\n",
 896                         card->cnr, card->traceflag);
 897                 return 0;
 898         }
 899         case KCAPI_CMD_ADDCARD:
 900         {
 901                 struct list_head *l;
 902                 struct capi_driver *driver = NULL;
 903                 capicardparams cparams;
 904                 kcapi_carddef cdef;
 905                 int retval;
 906
 907                 if ((retval = copy_from_user(&cdef, data, sizeof(cdef))))
 908                         return retval;
 909
 910                 cparams.port = cdef.port;
 911                 cparams.irq = cdef.irq;
 912                 cparams.membase = cdef.membase;
 913                 cparams.cardnr = cdef.cardnr;
 914                 cparams.cardtype = 0;
 915                 cdef.driver[sizeof(cdef.driver)-1] = 0;
 916
 917                 list_for_each(l, &capi_drivers) {
 918                         driver = list_entry(l, struct capi_driver, list);
 919                         if (strcmp(driver->name, cdef.driver) == 0)
 920                                 break;
 921                 }
 922                 if (driver == 0) {
 923                         printk(KERN_ERR "kcapi: driver \"%s\" not loaded.\n",
 924                                         cdef.driver);
 925                         return -ESRCH;
 926                 }
 927
 928                 if (!driver->add_card) {
 929                         printk(KERN_ERR "kcapi: driver \"%s\" has no add card function.\n", cdef.driver);
 930                         return -EIO;
 931                 }
 932
 933                 return driver->add_card(driver, &cparams);
 934         }
 935
 936         default:
 937                 printk(KERN_ERR "kcapi: manufacturer command %d unknown.\n",
 938                                         cmd);
 939                 break;
 940
 941         }
 942         return -EINVAL;
 943 }
 944
 945 EXPORT_SYMBOL(capi20_manufacturer);
 946
 947 /* temporary hack */
 948 void capi20_set_callback(struct capi20_appl *ap,
 949                          void (*callback) (unsigned int cmd, __u32 contr, void *data))
 950 {
 951         ap->callback = callback;
 952 }
 953
 954 EXPORT_SYMBOL(capi20_set_callback);
 955
 956 /* ------------------------------------------------------------- */
 957 /* -------- Init & Cleanup ------------------------------------- */
 958 /* ------------------------------------------------------------- */
 959
 960 /*
 961  * init / exit functions
 962  */
 963
 964 static int __init kcapi_init(void)
 965 {
 966         char *p;
 967         char rev[32];
 968
 969         kcapi_proc_init();
 970
 971         if ((p = strchr(revision, ':')) != 0 && p[1]) {
 972                 strlcpy(rev, p + 2, sizeof(rev));
 973                 if ((p = strchr(rev, '$')) != 0 && p > rev)
 974                    *(p-1) = 0;
 975         } else
 976                 strcpy(rev, "1.0");
 977
 978         printk(KERN_NOTICE "CAPI Subsystem Rev %s\n", rev);
 979
 980         return 0;
 981 }
 982
 983 static void __exit kcapi_exit(void)
 984 {
 985         kcapi_proc_exit();
 986
 987         /* make sure all notifiers are finished */
 988         flush_scheduled_work();
 989 }
 990
 991 module_init(kcapi_init);
 992 module_exit(kcapi_exit);