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