drivers/isdn/avmb1/capi.c

   1 /* $Id: capi.c,v 1.1.1.1 2005/04/11 02:50:22 jack Exp $
   2  *
   3  * CAPI 2.0 Interface for Linux
   4  *
   5  * Copyright 1996 by Carsten Paeth <calle@calle.de>
   6  *
   7  * This software may be used and distributed according to the terms
   8  * of the GNU General Public License, incorporated herein by reference.
   9  *
  10  */
  11
  12 #include <linux/config.h>
  13 #include <linux/module.h>
  14 #include <linux/errno.h>
  15 #include <linux/kernel.h>
  16 #include <linux/major.h>
  17 #include <linux/sched.h>
  18 #include <linux/slab.h>
  19 #include <linux/fcntl.h>
  20 #include <linux/fs.h>
  21 #include <linux/signal.h>
  22 #include <linux/mm.h>
  23 #include <linux/smp_lock.h>
  24 #include <linux/timer.h>
  25 #include <linux/wait.h>
  26 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
  27 #include <linux/tty.h>
  28 #ifdef CONFIG_PPP
  29 #include <linux/netdevice.h>
  30 #include <linux/ppp_defs.h>
  31 #include <linux/if_ppp.h>
  32 #undef CAPI_PPP_ON_RAW_DEVICE
  33 #endif /* CONFIG_PPP */
  34 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
  35 #include <linux/skbuff.h>
  36 #include <linux/proc_fs.h>
  37 #include <linux/poll.h>
  38 #include <linux/capi.h>
  39 #include <linux/kernelcapi.h>
  40 #include <linux/init.h>
  41 #include <linux/devfs_fs_kernel.h>
  42 #include "capiutil.h"
  43 #include "capicmd.h"
  44 #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
  45 #include "capifs.h"
  46 #endif
  47
  48 static char *revision = "$Revision: 1.1.1.1 $";
  49
  50 MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface");
  51 MODULE_AUTHOR("Carsten Paeth");
  52 MODULE_LICENSE("GPL");
  53
  54 #undef _DEBUG_REFCOUNT          /* alloc/free and open/close debug */
  55 #undef _DEBUG_TTYFUNCS          /* call to tty_driver */
  56 #undef _DEBUG_DATAFLOW          /* data flow */
  57
  58 /* -------- driver information -------------------------------------- */
  59
  60 int capi_major = 68;            /* allocated */
  61 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
  62 int capi_rawmajor = 190;
  63 int capi_ttymajor = 191;
  64 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
  65
  66 MODULE_PARM(capi_major, "i");
  67 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
  68 MODULE_PARM(capi_rawmajor, "i");
  69 MODULE_PARM(capi_ttymajor, "i");
  70 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
  71
  72 /* -------- defines ------------------------------------------------- */
  73
  74 #define CAPINC_MAX_RECVQUEUE    10
  75 #define CAPINC_MAX_SENDQUEUE    10
  76 #define CAPI_MAX_BLKSIZE        2048
  77
  78 /* -------- data structures ----------------------------------------- */
  79
  80 struct capidev;
  81 struct capincci;
  82 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
  83 struct capiminor;
  84
  85 struct capiminor {
  86         struct capiminor *next;
  87         struct capincci  *nccip;
  88         unsigned int      minor;
  89
  90         u16              applid;
  91         u32              ncci;
  92         u16              datahandle;
  93         u16              msgid;
  94
  95         struct file      *file;
  96         struct tty_struct *tty;
  97         int                ttyinstop;
  98         int                ttyoutstop;
  99         struct sk_buff    *ttyskb;
 100         atomic_t           ttyopencount;
 101
 102         struct sk_buff_head inqueue;
 103         int                 inbytes;
 104         struct sk_buff_head outqueue;
 105         int                 outbytes;
 106
 107         /* for raw device */
 108         struct sk_buff_head recvqueue;
 109         wait_queue_head_t recvwait;
 110         wait_queue_head_t sendwait;
 111
 112         /* transmit path */
 113         struct datahandle_queue {
 114                     struct datahandle_queue *next;
 115                     u16                      datahandle;
 116         } *ackqueue;
 117         int nack;
 118
 119 };
 120 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 121
 122 struct capincci {
 123         struct capincci *next;
 124         u32              ncci;
 125         struct capidev  *cdev;
 126 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 127         struct capiminor *minorp;
 128 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 129 };
 130
 131 struct capidev {
 132         struct capidev *next;
 133         struct file    *file;
 134         u16             applid;
 135         u16             errcode;
 136         unsigned int    minor;
 137         unsigned        userflags;
 138
 139         struct sk_buff_head recvqueue;
 140         wait_queue_head_t recvwait;
 141
 142         /* Statistic */
 143         unsigned long   nrecvctlpkt;
 144         unsigned long   nrecvdatapkt;
 145         unsigned long   nsentctlpkt;
 146         unsigned long   nsentdatapkt;
 147
 148         struct capincci *nccis;
 149 };
 150
 151 /* -------- global variables ---------------------------------------- */
 152
 153 static struct capi_interface *capifuncs = 0;
 154 static struct capidev *capidev_openlist = 0;
 155 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 156 static struct capiminor *minors = 0;
 157 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 158
 159 static kmem_cache_t *capidev_cachep = 0;
 160 static kmem_cache_t *capincci_cachep = 0;
 161 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 162 static kmem_cache_t *capiminor_cachep = 0;
 163 static kmem_cache_t *capidh_cachep = 0;
 164 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 165
 166 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 167 /* -------- datahandles --------------------------------------------- */
 168
 169 static int capincci_add_ack(struct capiminor *mp, u16 datahandle)
 170 {
 171         struct datahandle_queue *n, **pp;
 172
 173         n = (struct datahandle_queue *)
 174         kmem_cache_alloc(capidh_cachep, GFP_ATOMIC);
 175         if (!n) {
 176            printk(KERN_ERR "capi: alloc datahandle failed\n");
 177            return -1;
 178         }
 179         n->next = 0;
 180         n->datahandle = datahandle;
 181         for (pp = &mp->ackqueue; *pp; pp = &(*pp)->next) ;
 182         *pp = n;
 183         mp->nack++;
 184         return 0;
 185 }
 186
 187 static int capiminor_del_ack(struct capiminor *mp, u16 datahandle)
 188 {
 189         struct datahandle_queue **pp, *p;
 190
 191         for (pp = &mp->ackqueue; *pp; pp = &(*pp)->next) {
 192                 if ((*pp)->datahandle == datahandle) {
 193                         p = *pp;
 194                         *pp = (*pp)->next;
 195                         kmem_cache_free(capidh_cachep, p);
 196                         mp->nack--;
 197                         return 0;
 198                 }
 199         }
 200         return -1;
 201 }
 202
 203 static void capiminor_del_all_ack(struct capiminor *mp)
 204 {
 205         struct datahandle_queue **pp, *p;
 206
 207         pp = &mp->ackqueue;
 208         while (*pp) {
 209                 p = *pp;
 210                 *pp = (*pp)->next;
 211                 kmem_cache_free(capidh_cachep, p);
 212                 mp->nack--;
 213         }
 214 }
 215
 216
 217 /* -------- struct capiminor ---------------------------------------- */
 218
 219 static struct capiminor *capiminor_alloc(u16 applid, u32 ncci)
 220 {
 221         struct capiminor *mp, **pp;
 222         unsigned int minor = 0;
 223
 224         MOD_INC_USE_COUNT;
 225         mp = (struct capiminor *)kmem_cache_alloc(capiminor_cachep, GFP_ATOMIC);
 226         if (!mp) {
 227                 MOD_DEC_USE_COUNT;
 228                 printk(KERN_ERR "capi: can't alloc capiminor\n");
 229                 return 0;
 230         }
 231 #ifdef _DEBUG_REFCOUNT
 232         printk(KERN_DEBUG "capiminor_alloc %d\n", GET_USE_COUNT(THIS_MODULE));
 233 #endif
 234         memset(mp, 0, sizeof(struct capiminor));
 235         mp->applid = applid;
 236         mp->ncci = ncci;
 237         mp->msgid = 0;
 238         atomic_set(&mp->ttyopencount,0);
 239
 240         skb_queue_head_init(&mp->inqueue);
 241         skb_queue_head_init(&mp->outqueue);
 242
 243         skb_queue_head_init(&mp->recvqueue);
 244         init_waitqueue_head(&mp->recvwait);
 245         init_waitqueue_head(&mp->sendwait);
 246
 247         for (pp = &minors; *pp; pp = &(*pp)->next) {
 248                 if ((*pp)->minor < minor)
 249                         continue;
 250                 if ((*pp)->minor > minor)
 251                         break;
 252                 minor++;
 253         }
 254         mp->minor = minor;
 255         mp->next = *pp;
 256         *pp = mp;
 257         return mp;
 258 }
 259
 260 static void capiminor_free(struct capiminor *mp)
 261 {
 262         struct capiminor **pp;
 263
 264         pp = &minors;
 265         while (*pp) {
 266                 if (*pp == mp) {
 267                         *pp = (*pp)->next;
 268                         if (mp->ttyskb) kfree_skb(mp->ttyskb);
 269                         mp->ttyskb = 0;
 270                         skb_queue_purge(&mp->recvqueue);
 271                         skb_queue_purge(&mp->inqueue);
 272                         skb_queue_purge(&mp->outqueue);
 273                         capiminor_del_all_ack(mp);
 274                         kmem_cache_free(capiminor_cachep, mp);
 275                         MOD_DEC_USE_COUNT;
 276 #ifdef _DEBUG_REFCOUNT
 277                         printk(KERN_DEBUG "capiminor_free %d\n", GET_USE_COUNT(THIS_MODULE));
 278 #endif
 279                         return;
 280                 } else {
 281                         pp = &(*pp)->next;
 282                 }
 283         }
 284 }
 285
 286 static struct capiminor *capiminor_find(unsigned int minor)
 287 {
 288         struct capiminor *p;
 289         for (p = minors; p && p->minor != minor; p = p->next)
 290                 ;
 291         return p;
 292 }
 293 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 294
 295 /* -------- struct capincci ----------------------------------------- */
 296
 297 static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci)
 298 {
 299         struct capincci *np, **pp;
 300 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 301         struct capiminor *mp = 0;
 302         kdev_t kdev;
 303 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 304
 305         np = (struct capincci *)kmem_cache_alloc(capincci_cachep, GFP_ATOMIC);
 306         if (!np)
 307                 return 0;
 308         memset(np, 0, sizeof(struct capincci));
 309         np->ncci = ncci;
 310         np->cdev = cdev;
 311 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 312         mp = 0;
 313         if (cdev->userflags & CAPIFLAG_HIGHJACKING)
 314                 mp = np->minorp = capiminor_alloc(cdev->applid, ncci);
 315         if (mp) {
 316                 mp->nccip = np;
 317 #ifdef _DEBUG_REFCOUNT
 318                 printk(KERN_DEBUG "set mp->nccip\n");
 319 #endif
 320 #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
 321                 kdev = MKDEV(capi_rawmajor, mp->minor);
 322                 capifs_new_ncci('r', mp->minor, kdev);
 323                 kdev = MKDEV(capi_ttymajor, mp->minor);
 324                 capifs_new_ncci(0, mp->minor, kdev);
 325 #endif
 326         }
 327 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 328         for (pp=&cdev->nccis; *pp; pp = &(*pp)->next)
 329                 ;
 330         *pp = np;
 331         return np;
 332 }
 333
 334 static void capincci_free(struct capidev *cdev, u32 ncci)
 335 {
 336         struct capincci *np, **pp;
 337 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 338         struct capiminor *mp;
 339 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 340
 341         pp=&cdev->nccis;
 342         while (*pp) {
 343                 np = *pp;
 344                 if (ncci == 0xffffffff || np->ncci == ncci) {
 345                         *pp = (*pp)->next;
 346 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 347                         if ((mp = np->minorp) != 0) {
 348 #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
 349                                 capifs_free_ncci('r', mp->minor);
 350                                 capifs_free_ncci(0, mp->minor);
 351 #endif
 352                                 if (mp->tty) {
 353                                         mp->nccip = 0;
 354 #ifdef _DEBUG_REFCOUNT
 355                                         printk(KERN_DEBUG "reset mp->nccip\n");
 356 #endif
 357                                         tty_hangup(mp->tty);
 358                                 } else if (mp->file) {
 359                                         mp->nccip = 0;
 360 #ifdef _DEBUG_REFCOUNT
 361                                         printk(KERN_DEBUG "reset mp->nccip\n");
 362 #endif
 363                                         wake_up_interruptible(&mp->recvwait);
 364                                         wake_up_interruptible(&mp->sendwait);
 365                                 } else {
 366                                         capiminor_free(mp);
 367                                 }
 368                         }
 369 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 370                         kmem_cache_free(capincci_cachep, np);
 371                         if (*pp == 0) return;
 372                 } else {
 373                         pp = &(*pp)->next;
 374                 }
 375         }
 376 }
 377
 378 static struct capincci *capincci_find(struct capidev *cdev, u32 ncci)
 379 {
 380         struct capincci *p;
 381
 382         for (p=cdev->nccis; p ; p = p->next) {
 383                 if (p->ncci == ncci)
 384                         break;
 385         }
 386         return p;
 387 }
 388
 389 /* -------- struct capidev ------------------------------------------ */
 390
 391 static struct capidev *capidev_alloc(struct file *file)
 392 {
 393         struct capidev *cdev;
 394         struct capidev **pp;
 395
 396         cdev = (struct capidev *)kmem_cache_alloc(capidev_cachep, GFP_KERNEL);
 397         if (!cdev)
 398                 return 0;
 399         memset(cdev, 0, sizeof(struct capidev));
 400         cdev->file = file;
 401         cdev->minor = MINOR(file->f_dentry->d_inode->i_rdev);
 402
 403         skb_queue_head_init(&cdev->recvqueue);
 404         init_waitqueue_head(&cdev->recvwait);
 405         pp=&capidev_openlist;
 406         while (*pp) pp = &(*pp)->next;
 407         *pp = cdev;
 408         return cdev;
 409 }
 410
 411 static void capidev_free(struct capidev *cdev)
 412 {
 413         struct capidev **pp;
 414
 415         if (cdev->applid)
 416                 (*capifuncs->capi_release) (cdev->applid);
 417         cdev->applid = 0;
 418
 419         skb_queue_purge(&cdev->recvqueue);
 420
 421         pp=&capidev_openlist;
 422         while (*pp && *pp != cdev) pp = &(*pp)->next;
 423         if (*pp)
 424                 *pp = cdev->next;
 425
 426         kmem_cache_free(capidev_cachep, cdev);
 427 }
 428
 429 static struct capidev *capidev_find(u16 applid)
 430 {
 431         struct capidev *p;
 432         for (p=capidev_openlist; p; p = p->next) {
 433                 if (p->applid == applid)
 434                         break;
 435         }
 436         return p;
 437 }
 438
 439 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 440 /* -------- handle data queue --------------------------------------- */
 441
 442 static struct sk_buff *
 443 gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb)
 444 {
 445         struct sk_buff *nskb;
 446         nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_ATOMIC);
 447         if (nskb) {
 448                 u16 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4+4+2);
 449                 unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN);
 450                 capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN);
 451                 capimsg_setu16(s, 2, mp->applid);
 452                 capimsg_setu8 (s, 4, CAPI_DATA_B3);
 453                 capimsg_setu8 (s, 5, CAPI_RESP);
 454                 capimsg_setu16(s, 6, mp->msgid++);
 455                 capimsg_setu32(s, 8, mp->ncci);
 456                 capimsg_setu16(s, 12, datahandle);
 457         }
 458         return nskb;
 459 }
 460
 461 static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb)
 462 {
 463         struct sk_buff *nskb;
 464         unsigned int datalen;
 465         u16 errcode, datahandle;
 466
 467         datalen = skb->len - CAPIMSG_LEN(skb->data);
 468         if (mp->tty) {
 469                 if (mp->tty->ldisc.receive_buf == 0) {
 470                         printk(KERN_ERR "capi: ldisc has no receive_buf function\n");
 471                         return -1;
 472                 }
 473                 if (mp->ttyinstop) {
 474 #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
 475                         printk(KERN_DEBUG "capi: recv tty throttled\n");
 476 #endif
 477                         return -1;
 478                 }
 479                 if (mp->tty->ldisc.receive_room &&
 480                     mp->tty->ldisc.receive_room(mp->tty) < datalen) {
 481 #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
 482                         printk(KERN_DEBUG "capi: no room in tty\n");
 483 #endif
 484                         return -1;
 485                 }
 486                 if ((nskb = gen_data_b3_resp_for(mp, skb)) == 0) {
 487                         printk(KERN_ERR "capi: gen_data_b3_resp failed\n");
 488                         return -1;
 489                 }
 490                 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4);
 491                 errcode = (*capifuncs->capi_put_message)(mp->applid, nskb);
 492                 if (errcode != CAPI_NOERROR) {
 493                         printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n",
 494                                         errcode);
 495                         kfree_skb(nskb);
 496                         return -1;
 497                 }
 498                 (void)skb_pull(skb, CAPIMSG_LEN(skb->data));
 499 #ifdef _DEBUG_DATAFLOW
 500                 printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n",
 501                                         datahandle, skb->len);
 502 #endif
 503                 mp->tty->ldisc.receive_buf(mp->tty, skb->data, 0, skb->len);
 504                 kfree_skb(skb);
 505                 return 0;
 506
 507         } else if (mp->file) {
 508                 if (skb_queue_len(&mp->recvqueue) > CAPINC_MAX_RECVQUEUE) {
 509 #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
 510                         printk(KERN_DEBUG "capi: no room in raw queue\n");
 511 #endif
 512                         return -1;
 513                 }
 514                 if ((nskb = gen_data_b3_resp_for(mp, skb)) == 0) {
 515                         printk(KERN_ERR "capi: gen_data_b3_resp failed\n");
 516                         return -1;
 517                 }
 518                 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4);
 519                 errcode = (*capifuncs->capi_put_message)(mp->applid, nskb);
 520                 if (errcode != CAPI_NOERROR) {
 521                         printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n",
 522                                         errcode);
 523                         kfree_skb(nskb);
 524                         return -1;
 525                 }
 526                 (void)skb_pull(skb, CAPIMSG_LEN(skb->data));
 527 #ifdef _DEBUG_DATAFLOW
 528                 printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => raw\n",
 529                                         datahandle, skb->len);
 530 #endif
 531                 skb_queue_tail(&mp->recvqueue, skb);
 532                 wake_up_interruptible(&mp->recvwait);
 533                 return 0;
 534         }
 535 #ifdef _DEBUG_DATAFLOW
 536         printk(KERN_DEBUG "capi: currently no receiver\n");
 537 #endif
 538         return -1;
 539 }
 540
 541 static void handle_minor_recv(struct capiminor *mp)
 542 {
 543         struct sk_buff *skb;
 544         while ((skb = skb_dequeue(&mp->inqueue)) != 0) {
 545                 unsigned int len = skb->len;
 546                 mp->inbytes -= len;
 547                 if (handle_recv_skb(mp, skb) < 0) {
 548                         skb_queue_head(&mp->inqueue, skb);
 549                         mp->inbytes += len;
 550                         return;
 551                 }
 552         }
 553 }
 554
 555 static int handle_minor_send(struct capiminor *mp)
 556 {
 557         struct sk_buff *skb;
 558         u16 len;
 559         int count = 0;
 560         u16 errcode;
 561         u16 datahandle;
 562
 563         if (mp->tty && mp->ttyoutstop) {
 564 #if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
 565                 printk(KERN_DEBUG "capi: send: tty stopped\n");
 566 #endif
 567                 return 0;
 568         }
 569
 570         while ((skb = skb_dequeue(&mp->outqueue)) != 0) {
 571                 datahandle = mp->datahandle;
 572                 len = (u16)skb->len;
 573                 skb_push(skb, CAPI_DATA_B3_REQ_LEN);
 574                 memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
 575                 capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
 576                 capimsg_setu16(skb->data, 2, mp->applid);
 577                 capimsg_setu8 (skb->data, 4, CAPI_DATA_B3);
 578                 capimsg_setu8 (skb->data, 5, CAPI_REQ);
 579                 capimsg_setu16(skb->data, 6, mp->msgid++);
 580                 capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */
 581                 capimsg_setu32(skb->data, 12, (u32) skb->data); /* Data32 */
 582                 capimsg_setu16(skb->data, 16, len);     /* Data length */
 583                 capimsg_setu16(skb->data, 18, datahandle);
 584                 capimsg_setu16(skb->data, 20, 0);       /* Flags */
 585
 586                 if (capincci_add_ack(mp, datahandle) < 0) {
 587                         skb_pull(skb, CAPI_DATA_B3_REQ_LEN);
 588                         skb_queue_head(&mp->outqueue, skb);
 589                         return count;
 590                 }
 591                 errcode = (*capifuncs->capi_put_message) (mp->applid, skb);
 592                 if (errcode == CAPI_NOERROR) {
 593                         mp->datahandle++;
 594                         count++;
 595                         mp->outbytes -= len;
 596 #ifdef _DEBUG_DATAFLOW
 597                         printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n",
 598                                                         datahandle, len);
 599 #endif
 600                         continue;
 601                 }
 602                 capiminor_del_ack(mp, datahandle);
 603
 604                 if (errcode == CAPI_SENDQUEUEFULL) {
 605                         skb_pull(skb, CAPI_DATA_B3_REQ_LEN);
 606                         skb_queue_head(&mp->outqueue, skb);
 607                         break;
 608                 }
 609
 610                 /* ups, drop packet */
 611                 printk(KERN_ERR "capi: put_message = %x\n", errcode);
 612                 mp->outbytes -= len;
 613                 kfree_skb(skb);
 614         }
 615         if (count)
 616                 wake_up_interruptible(&mp->sendwait);
 617         return count;
 618 }
 619
 620 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 621 /* -------- function called by lower level -------------------------- */
 622
 623 static void capi_signal(u16 applid, void *param)
 624 {
 625         struct capidev *cdev = (struct capidev *)param;
 626 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 627         struct capiminor *mp;
 628         u16 datahandle;
 629 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 630         struct capincci *np;
 631         struct sk_buff *skb = 0;
 632         u32 ncci;
 633
 634         (void) (*capifuncs->capi_get_message) (applid, &skb);
 635         if (!skb) {
 636                 printk(KERN_ERR "BUG: capi_signal: no skb\n");
 637                 return;
 638         }
 639
 640         if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) {
 641                 skb_queue_tail(&cdev->recvqueue, skb);
 642                 wake_up_interruptible(&cdev->recvwait);
 643                 return;
 644         }
 645         ncci = CAPIMSG_CONTROL(skb->data);
 646         for (np = cdev->nccis; np && np->ncci != ncci; np = np->next)
 647                 ;
 648         if (!np) {
 649                 printk(KERN_ERR "BUG: capi_signal: ncci not found\n");
 650                 skb_queue_tail(&cdev->recvqueue, skb);
 651                 wake_up_interruptible(&cdev->recvwait);
 652                 return;
 653         }
 654 #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE
 655         skb_queue_tail(&cdev->recvqueue, skb);
 656         wake_up_interruptible(&cdev->recvwait);
 657 #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 658         mp = np->minorp;
 659         if (!mp) {
 660                 skb_queue_tail(&cdev->recvqueue, skb);
 661                 wake_up_interruptible(&cdev->recvwait);
 662                 return;
 663         }
 664
 665
 666         if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) {
 667                 datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2);
 668 #ifdef _DEBUG_DATAFLOW
 669                 printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n",
 670                                 datahandle, skb->len-CAPIMSG_LEN(skb->data));
 671 #endif
 672                 skb_queue_tail(&mp->inqueue, skb);
 673                 mp->inbytes += skb->len;
 674                 handle_minor_recv(mp);
 675
 676         } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) {
 677
 678                 datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4);
 679 #ifdef _DEBUG_DATAFLOW
 680                 printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n",
 681                                 datahandle,
 682                                 CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2));
 683 #endif
 684                 kfree_skb(skb);
 685                 (void)capiminor_del_ack(mp, datahandle);
 686                 if (mp->tty) {
 687                         if (mp->tty->ldisc.write_wakeup)
 688                                 mp->tty->ldisc.write_wakeup(mp->tty);
 689                 } else {
 690                         wake_up_interruptible(&mp->sendwait);
 691                 }
 692                 (void)handle_minor_send(mp);
 693
 694         } else {
 695                 /* ups, let capi application handle it :-) */
 696                 skb_queue_tail(&cdev->recvqueue, skb);
 697                 wake_up_interruptible(&cdev->recvwait);
 698         }
 699 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 700 }
 701
 702 /* -------- file_operations for capidev ----------------------------- */
 703
 704 static ssize_t
 705 capi_read(struct file *file, char *buf, size_t count, loff_t *ppos)
 706 {
 707         struct capidev *cdev = (struct capidev *)file->private_data;
 708         struct sk_buff *skb;
 709         int retval;
 710         size_t copied;
 711
 712         if (ppos != &file->f_pos)
 713                 return -ESPIPE;
 714
 715         if (!cdev->applid)
 716                 return -ENODEV;
 717
 718         if ((skb = skb_dequeue(&cdev->recvqueue)) == 0) {
 719
 720                 if (file->f_flags & O_NONBLOCK)
 721                         return -EAGAIN;
 722
 723                 for (;;) {
 724                         interruptible_sleep_on(&cdev->recvwait);
 725                         if ((skb = skb_dequeue(&cdev->recvqueue)) != 0)
 726                                 break;
 727                         if (signal_pending(current))
 728                                 break;
 729                 }
 730                 if (skb == 0)
 731                         return -ERESTARTNOHAND;
 732         }
 733         if (skb->len > count) {
 734                 skb_queue_head(&cdev->recvqueue, skb);
 735                 return -EMSGSIZE;
 736         }
 737         retval = copy_to_user(buf, skb->data, skb->len);
 738         if (retval) {
 739                 skb_queue_head(&cdev->recvqueue, skb);
 740                 return retval;
 741         }
 742         copied = skb->len;
 743
 744         if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_IND) {
 745                 cdev->nrecvdatapkt++;
 746         } else {
 747                 cdev->nrecvctlpkt++;
 748         }
 749
 750         kfree_skb(skb);
 751
 752         return copied;
 753 }
 754
 755 static ssize_t
 756 capi_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
 757 {
 758         struct capidev *cdev = (struct capidev *)file->private_data;
 759         struct sk_buff *skb;
 760         int retval;
 761         u16 mlen;
 762
 763         if (ppos != &file->f_pos)
 764                 return -ESPIPE;
 765
 766         if (!cdev->applid)
 767                 return -ENODEV;
 768
 769         skb = alloc_skb(count, GFP_USER);
 770         if (!skb)
 771                 return -ENOMEM;
 772
 773         if ((retval = copy_from_user(skb_put(skb, count), buf, count))) {
 774                 kfree_skb(skb);
 775                 return -EFAULT;
 776         }
 777         mlen = CAPIMSG_LEN(skb->data);
 778         if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) {
 779                 if (mlen + CAPIMSG_DATALEN(skb->data) != count) {
 780                         kfree_skb(skb);
 781                         return -EINVAL;
 782                 }
 783         } else {
 784                 if (mlen != count) {
 785                         kfree_skb(skb);
 786                         return -EINVAL;
 787                 }
 788         }
 789         CAPIMSG_SETAPPID(skb->data, cdev->applid);
 790
 791         cdev->errcode = (*capifuncs->capi_put_message) (cdev->applid, skb);
 792
 793         if (cdev->errcode) {
 794                 kfree_skb(skb);
 795                 return -EIO;
 796         }
 797         if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) {
 798                 cdev->nsentdatapkt++;
 799         } else {
 800                 cdev->nsentctlpkt++;
 801         }
 802         return count;
 803 }
 804
 805 static unsigned int
 806 capi_poll(struct file *file, poll_table * wait)
 807 {
 808         struct capidev *cdev = (struct capidev *)file->private_data;
 809         unsigned int mask = 0;
 810
 811         if (!cdev->applid)
 812                 return POLLERR;
 813
 814         poll_wait(file, &(cdev->recvwait), wait);
 815         mask = POLLOUT | POLLWRNORM;
 816         if (!skb_queue_empty(&cdev->recvqueue))
 817                 mask |= POLLIN | POLLRDNORM;
 818         return mask;
 819 }
 820
 821 static int
 822 capi_ioctl(struct inode *inode, struct file *file,
 823                       unsigned int cmd, unsigned long arg)
 824 {
 825         struct capidev *cdev = (struct capidev *)file->private_data;
 826         capi_ioctl_struct data;
 827         int retval = -EINVAL;
 828
 829         switch (cmd) {
 830         case CAPI_REGISTER:
 831                 {
 832                         retval = copy_from_user((void *) &data.rparams,
 833                                                 (void *) arg, sizeof(struct capi_register_params));
 834                         if (retval)
 835                                 return -EFAULT;
 836                         if (cdev->applid)
 837                                 return -EEXIST;
 838                         cdev->errcode = (*capifuncs->capi_register) (&data.rparams,
 839                                                           &cdev->applid);
 840                         if (cdev->errcode) {
 841                                 cdev->applid = 0;
 842                                 return -EIO;
 843                         }
 844                         (void) (*capifuncs->capi_set_signal) (cdev->applid, capi_signal, cdev);
 845                 }
 846                 return (int)cdev->applid;
 847
 848         case CAPI_GET_VERSION:
 849                 {
 850                         retval = copy_from_user((void *) &data.contr,
 851                                                 (void *) arg,
 852                                                 sizeof(data.contr));
 853                         if (retval)
 854                                 return -EFAULT;
 855                         cdev->errcode = (*capifuncs->capi_get_version) (data.contr, &data.version);
 856                         if (cdev->errcode)
 857                                 return -EIO;
 858                         retval = copy_to_user((void *) arg,
 859                                               (void *) &data.version,
 860                                               sizeof(data.version));
 861                         if (retval)
 862                                 return -EFAULT;
 863                 }
 864                 return 0;
 865
 866         case CAPI_GET_SERIAL:
 867                 {
 868                         retval = copy_from_user((void *) &data.contr,
 869                                                 (void *) arg,
 870                                                 sizeof(data.contr));
 871                         if (retval)
 872                                 return -EFAULT;
 873                         cdev->errcode = (*capifuncs->capi_get_serial) (data.contr, data.serial);
 874                         if (cdev->errcode)
 875                                 return -EIO;
 876                         retval = copy_to_user((void *) arg,
 877                                               (void *) data.serial,
 878                                               sizeof(data.serial));
 879                         if (retval)
 880                                 return -EFAULT;
 881                 }
 882                 return 0;
 883         case CAPI_GET_PROFILE:
 884                 {
 885                         retval = copy_from_user((void *) &data.contr,
 886                                                 (void *) arg,
 887                                                 sizeof(data.contr));
 888                         if (retval)
 889                                 return -EFAULT;
 890
 891                         if (data.contr == 0) {
 892                                 cdev->errcode = (*capifuncs->capi_get_profile) (data.contr, &data.profile);
 893                                 if (cdev->errcode)
 894                                         return -EIO;
 895
 896                                 retval = copy_to_user((void *) arg,
 897                                       (void *) &data.profile.ncontroller,
 898                                        sizeof(data.profile.ncontroller));
 899
 900                         } else {
 901                                 cdev->errcode = (*capifuncs->capi_get_profile) (data.contr, &data.profile);
 902                                 if (cdev->errcode)
 903                                         return -EIO;
 904
 905                                 retval = copy_to_user((void *) arg,
 906                                                   (void *) &data.profile,
 907                                                    sizeof(data.profile));
 908                         }
 909                         if (retval)
 910                                 return -EFAULT;
 911                 }
 912                 return 0;
 913
 914         case CAPI_GET_MANUFACTURER:
 915                 {
 916                         retval = copy_from_user((void *) &data.contr,
 917                                                 (void *) arg,
 918                                                 sizeof(data.contr));
 919                         if (retval)
 920                                 return -EFAULT;
 921                         cdev->errcode = (*capifuncs->capi_get_manufacturer) (data.contr, data.manufacturer);
 922                         if (cdev->errcode)
 923                                 return -EIO;
 924
 925                         retval = copy_to_user((void *) arg, (void *) data.manufacturer,
 926                                               sizeof(data.manufacturer));
 927                         if (retval)
 928                                 return -EFAULT;
 929
 930                 }
 931                 return 0;
 932         case CAPI_GET_ERRCODE:
 933                 data.errcode = cdev->errcode;
 934                 cdev->errcode = CAPI_NOERROR;
 935                 if (arg) {
 936                         retval = copy_to_user((void *) arg,
 937                                               (void *) &data.errcode,
 938                                               sizeof(data.errcode));
 939                         if (retval)
 940                                 return -EFAULT;
 941                 }
 942                 return data.errcode;
 943
 944         case CAPI_INSTALLED:
 945                 if ((*capifuncs->capi_isinstalled)() == CAPI_NOERROR)
 946                         return 0;
 947                 return -ENXIO;
 948
 949         case CAPI_MANUFACTURER_CMD:
 950                 {
 951                         struct capi_manufacturer_cmd mcmd;
 952                         if (!capable(CAP_SYS_ADMIN))
 953                                 return -EPERM;
 954                         retval = copy_from_user((void *) &mcmd, (void *) arg,
 955                                                 sizeof(mcmd));
 956                         if (retval)
 957                                 return -EFAULT;
 958                         return (*capifuncs->capi_manufacturer) (mcmd.cmd, mcmd.data);
 959                 }
 960                 return 0;
 961
 962         case CAPI_SET_FLAGS:
 963         case CAPI_CLR_FLAGS:
 964                 {
 965                         unsigned userflags;
 966                         retval = copy_from_user((void *) &userflags,
 967                                                 (void *) arg,
 968                                                 sizeof(userflags));
 969                         if (retval)
 970                                 return -EFAULT;
 971                         if (cmd == CAPI_SET_FLAGS)
 972                                 cdev->userflags |= userflags;
 973                         else
 974                                 cdev->userflags &= ~userflags;
 975                 }
 976                 return 0;
 977
 978         case CAPI_GET_FLAGS:
 979                 {
 980                         retval = copy_to_user((void *) arg,
 981                                               (void *) &cdev->userflags,
 982                                               sizeof(cdev->userflags));
 983                         if (retval)
 984                                 return -EFAULT;
 985                 }
 986                 return 0;
 987
 988         case CAPI_NCCI_OPENCOUNT:
 989                 {
 990                         struct capincci *nccip;
 991 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
 992                         struct capiminor *mp;
 993 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 994                         unsigned ncci;
 995                         int count = 0;
 996                         retval = copy_from_user((void *) &ncci,
 997                                                 (void *) arg,
 998                                                 sizeof(ncci));
 999                         if (retval)
1000                                 return -EFAULT;
1001                         nccip = capincci_find(cdev, (u32) ncci);
1002                         if (!nccip)
1003                                 return 0;
1004 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1005                         if ((mp = nccip->minorp) != 0) {
1006                                 count += atomic_read(&mp->ttyopencount);
1007                                 if (mp->file)
1008                                         count++;
1009                         }
1010 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1011                         return count;
1012                 }
1013                 return 0;
1014
1015 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1016         case CAPI_NCCI_GETUNIT:
1017                 {
1018                         struct capincci *nccip;
1019                         struct capiminor *mp;
1020                         unsigned ncci;
1021                         retval = copy_from_user((void *) &ncci,
1022                                                 (void *) arg,
1023                                                 sizeof(ncci));
1024                         if (retval)
1025                                 return -EFAULT;
1026                         nccip = capincci_find(cdev, (u32) ncci);
1027                         if (!nccip || (mp = nccip->minorp) == 0)
1028                                 return -ESRCH;
1029                         return mp->minor;
1030                 }
1031                 return 0;
1032 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1033         }
1034         return -EINVAL;
1035 }
1036
1037 static int
1038 capi_open(struct inode *inode, struct file *file)
1039 {
1040         if (file->private_data)
1041                 return -EEXIST;
1042
1043         if ((file->private_data = capidev_alloc(file)) == 0)
1044                 return -ENOMEM;
1045
1046         MOD_INC_USE_COUNT;
1047 #ifdef _DEBUG_REFCOUNT
1048         printk(KERN_DEBUG "capi_open %d\n", GET_USE_COUNT(THIS_MODULE));
1049 #endif
1050         return 0;
1051 }
1052
1053 static int
1054 capi_release(struct inode *inode, struct file *file)
1055 {
1056         struct capidev *cdev = (struct capidev *)file->private_data;
1057
1058         lock_kernel();
1059         capincci_free(cdev, 0xffffffff);
1060         capidev_free(cdev);
1061         file->private_data = NULL;
1062
1063         MOD_DEC_USE_COUNT;
1064 #ifdef _DEBUG_REFCOUNT
1065         printk(KERN_DEBUG "capi_release %d\n", GET_USE_COUNT(THIS_MODULE));
1066 #endif
1067         unlock_kernel();
1068         return 0;
1069 }
1070
1071 static struct file_operations capi_fops =
1072 {
1073         owner:          THIS_MODULE,
1074         llseek:         no_llseek,
1075         read:           capi_read,
1076         write:          capi_write,
1077         poll:           capi_poll,
1078         ioctl:          capi_ioctl,
1079         open:           capi_open,
1080         release:        capi_release,
1081 };
1082
1083 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1084 /* -------- file_operations for capincci ---------------------------- */
1085
1086 static int
1087 capinc_raw_open(struct inode *inode, struct file *file)
1088 {
1089         struct capiminor *mp;
1090
1091         if (file->private_data)
1092                 return -EEXIST;
1093         if ((mp = capiminor_find(MINOR(file->f_dentry->d_inode->i_rdev))) == 0)
1094                 return -ENXIO;
1095         if (mp->nccip == 0)
1096                 return -ENXIO;
1097         if (mp->file)
1098                 return -EBUSY;
1099
1100 #ifdef _DEBUG_REFCOUNT
1101         printk(KERN_DEBUG "capi_raw_open %d\n", GET_USE_COUNT(THIS_MODULE));
1102 #endif
1103
1104         mp->datahandle = 0;
1105         mp->file = file;
1106         file->private_data = (void *)mp;
1107         handle_minor_recv(mp);
1108         return 0;
1109 }
1110
1111 static ssize_t
1112 capinc_raw_read(struct file *file, char *buf, size_t count, loff_t *ppos)
1113 {
1114         struct capiminor *mp = (struct capiminor *)file->private_data;
1115         struct sk_buff *skb;
1116         int retval;
1117         size_t copied = 0;
1118
1119         if (ppos != &file->f_pos)
1120                 return -ESPIPE;
1121
1122         if (!mp || !mp->nccip)
1123                 return -EINVAL;
1124
1125         if ((skb = skb_dequeue(&mp->recvqueue)) == 0) {
1126
1127                 if (file->f_flags & O_NONBLOCK)
1128                         return -EAGAIN;
1129
1130                 for (;;) {
1131                         interruptible_sleep_on(&mp->recvwait);
1132                         if (mp->nccip == 0)
1133                                 return 0;
1134                         if ((skb = skb_dequeue(&mp->recvqueue)) != 0)
1135                                 break;
1136                         if (signal_pending(current))
1137                                 break;
1138                 }
1139                 if (skb == 0)
1140                         return -ERESTARTNOHAND;
1141         }
1142         do {
1143                 if (count < skb->len) {
1144                         retval = copy_to_user(buf, skb->data, count);
1145                         if (retval) {
1146                                 skb_queue_head(&mp->recvqueue, skb);
1147                                 return retval;
1148                         }
1149                         skb_pull(skb, count);
1150                         skb_queue_head(&mp->recvqueue, skb);
1151                         copied += count;
1152                         return copied;
1153                 } else {
1154                         retval = copy_to_user(buf, skb->data, skb->len);
1155                         if (retval) {
1156                                 skb_queue_head(&mp->recvqueue, skb);
1157                                 return copied;
1158                         }
1159                         copied += skb->len;
1160                         count -= skb->len;
1161                         buf += skb->len;
1162                         kfree_skb(skb);
1163                 }
1164         } while ((skb = skb_dequeue(&mp->recvqueue)) != 0);
1165
1166         return copied;
1167 }
1168
1169 static ssize_t
1170 capinc_raw_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
1171 {
1172         struct capiminor *mp = (struct capiminor *)file->private_data;
1173         struct sk_buff *skb;
1174         int retval;
1175
1176         if (ppos != &file->f_pos)
1177                 return -ESPIPE;
1178
1179         if (!mp || !mp->nccip)
1180                 return -EINVAL;
1181
1182         skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+count, GFP_USER);
1183         if (!skb)
1184                 return -ENOMEM;
1185
1186         skb_reserve(skb, CAPI_DATA_B3_REQ_LEN);
1187         if ((retval = copy_from_user(skb_put(skb, count), buf, count))) {
1188                 kfree_skb(skb);
1189                 return -EFAULT;
1190         }
1191
1192         while (skb_queue_len(&mp->outqueue) > CAPINC_MAX_SENDQUEUE) {
1193                 if (file->f_flags & O_NONBLOCK)
1194                         return -EAGAIN;
1195                 interruptible_sleep_on(&mp->sendwait);
1196                 if (mp->nccip == 0) {
1197                         kfree_skb(skb);
1198                         return -EIO;
1199                 }
1200                 if (signal_pending(current))
1201                         return -ERESTARTNOHAND;
1202         }
1203         skb_queue_tail(&mp->outqueue, skb);
1204         mp->outbytes += skb->len;
1205         (void)handle_minor_send(mp);
1206         return count;
1207 }
1208
1209 static unsigned int
1210 capinc_raw_poll(struct file *file, poll_table * wait)
1211 {
1212         struct capiminor *mp = (struct capiminor *)file->private_data;
1213         unsigned int mask = 0;
1214
1215         if (!mp || !mp->nccip)
1216                 return POLLERR|POLLHUP;
1217
1218         poll_wait(file, &(mp->recvwait), wait);
1219         if (!skb_queue_empty(&mp->recvqueue))
1220                 mask |= POLLIN | POLLRDNORM;
1221         poll_wait(file, &(mp->sendwait), wait);
1222         if (skb_queue_len(&mp->outqueue) > CAPINC_MAX_SENDQUEUE)
1223                 mask = POLLOUT | POLLWRNORM;
1224         return mask;
1225 }
1226
1227 static int
1228 capinc_raw_ioctl(struct inode *inode, struct file *file,
1229                       unsigned int cmd, unsigned long arg)
1230 {
1231         struct capiminor *mp = (struct capiminor *)file->private_data;
1232         if (!mp || !mp->nccip)
1233                 return -EINVAL;
1234
1235         switch (cmd) {
1236         }
1237         return -EINVAL;
1238 }
1239
1240 static int
1241 capinc_raw_release(struct inode *inode, struct file *file)
1242 {
1243         struct capiminor *mp = (struct capiminor *)file->private_data;
1244
1245         if (mp) {
1246                 lock_kernel();
1247                 mp->file = 0;
1248                 if (mp->nccip == 0) {
1249                         capiminor_free(mp);
1250                         file->private_data = NULL;
1251                 }
1252                 unlock_kernel();
1253         }
1254
1255 #ifdef _DEBUG_REFCOUNT
1256         printk(KERN_DEBUG "capinc_raw_release %d\n", GET_USE_COUNT(THIS_MODULE));
1257 #endif
1258         return 0;
1259 }
1260
1261 static struct file_operations capinc_raw_fops =
1262 {
1263         owner:          THIS_MODULE,
1264         llseek:         no_llseek,
1265         read:           capinc_raw_read,
1266         write:          capinc_raw_write,
1267         poll:           capinc_raw_poll,
1268         ioctl:          capinc_raw_ioctl,
1269         open:           capinc_raw_open,
1270         release:        capinc_raw_release,
1271 };
1272
1273 /* -------- tty_operations for capincci ----------------------------- */
1274
1275 static int capinc_tty_open(struct tty_struct * tty, struct file * file)
1276 {
1277         struct capiminor *mp;
1278
1279         if ((mp = capiminor_find(MINOR(file->f_dentry->d_inode->i_rdev))) == 0)
1280                 return -ENXIO;
1281         if (mp->nccip == 0)
1282                 return -ENXIO;
1283         if (mp->file)
1284                 return -EBUSY;
1285
1286         skb_queue_head_init(&mp->recvqueue);
1287         init_waitqueue_head(&mp->recvwait);
1288         init_waitqueue_head(&mp->sendwait);
1289         tty->driver_data = (void *)mp;
1290 #ifdef _DEBUG_REFCOUNT
1291         printk(KERN_DEBUG "capi_tty_open %d\n", GET_USE_COUNT(THIS_MODULE));
1292 #endif
1293         if (atomic_read(&mp->ttyopencount) == 0)
1294                 mp->tty = tty;
1295         atomic_inc(&mp->ttyopencount);
1296 #ifdef _DEBUG_REFCOUNT
1297         printk(KERN_DEBUG "capinc_tty_open ocount=%d\n", atomic_read(&mp->ttyopencount));
1298 #endif
1299         handle_minor_recv(mp);
1300         return 0;
1301 }
1302
1303 static void capinc_tty_close(struct tty_struct * tty, struct file * file)
1304 {
1305         struct capiminor *mp;
1306
1307         mp = (struct capiminor *)tty->driver_data;
1308         if (mp) {
1309                 if (atomic_dec_and_test(&mp->ttyopencount)) {
1310 #ifdef _DEBUG_REFCOUNT
1311                         printk(KERN_DEBUG "capinc_tty_close lastclose\n");
1312 #endif
1313                         tty->driver_data = (void *)0;
1314                         mp->tty = 0;
1315                 }
1316 #ifdef _DEBUG_REFCOUNT
1317                 printk(KERN_DEBUG "capinc_tty_close ocount=%d\n", atomic_read(&mp->ttyopencount));
1318 #endif
1319                 if (mp->nccip == 0)
1320                         capiminor_free(mp);
1321         }
1322
1323 #ifdef _DEBUG_REFCOUNT
1324         printk(KERN_DEBUG "capinc_tty_close\n");
1325 #endif
1326 }
1327
1328 static int capinc_tty_write(struct tty_struct * tty, int from_user,
1329                             const unsigned char *buf, int count)
1330 {
1331         struct capiminor *mp = (struct capiminor *)tty->driver_data;
1332         struct sk_buff *skb;
1333         int retval;
1334
1335 #ifdef _DEBUG_TTYFUNCS
1336         printk(KERN_DEBUG "capinc_tty_write(from_user=%d,count=%d)\n",
1337                                 from_user, count);
1338 #endif
1339
1340         if (!mp || !mp->nccip) {
1341 #ifdef _DEBUG_TTYFUNCS
1342                 printk(KERN_DEBUG "capinc_tty_write: mp or mp->ncci NULL\n");
1343 #endif
1344                 return 0;
1345         }
1346
1347         skb = mp->ttyskb;
1348         if (skb) {
1349                 mp->ttyskb = 0;
1350                 skb_queue_tail(&mp->outqueue, skb);
1351                 mp->outbytes += skb->len;
1352         }
1353
1354         skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+count, GFP_ATOMIC);
1355         if (!skb) {
1356                 printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n");
1357                 return -ENOMEM;
1358         }
1359
1360         skb_reserve(skb, CAPI_DATA_B3_REQ_LEN);
1361         if (from_user) {
1362                 if ((retval = copy_from_user(skb_put(skb, count), buf, count))) {
1363                         kfree_skb(skb);
1364 #ifdef _DEBUG_TTYFUNCS
1365                         printk(KERN_DEBUG "capinc_tty_write: copy_from_user=%d\n", retval);
1366 #endif
1367                         return -EFAULT;
1368                 }
1369         } else {
1370                 memcpy(skb_put(skb, count), buf, count);
1371         }
1372
1373         skb_queue_tail(&mp->outqueue, skb);
1374         mp->outbytes += skb->len;
1375         (void)handle_minor_send(mp);
1376         (void)handle_minor_recv(mp);
1377         return count;
1378 }
1379
1380 static void capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
1381 {
1382         struct capiminor *mp = (struct capiminor *)tty->driver_data;
1383         struct sk_buff *skb;
1384
1385 #ifdef _DEBUG_TTYFUNCS
1386         printk(KERN_DEBUG "capinc_put_char(%u)\n", ch);
1387 #endif
1388
1389         if (!mp || !mp->nccip) {
1390 #ifdef _DEBUG_TTYFUNCS
1391                 printk(KERN_DEBUG "capinc_tty_put_char: mp or mp->ncci NULL\n");
1392 #endif
1393                 return;
1394         }
1395
1396         skb = mp->ttyskb;
1397         if (skb) {
1398                 if (skb_tailroom(skb) > 0) {
1399                         *(skb_put(skb, 1)) = ch;
1400                         return;
1401                 }
1402                 mp->ttyskb = 0;
1403                 skb_queue_tail(&mp->outqueue, skb);
1404                 mp->outbytes += skb->len;
1405                 (void)handle_minor_send(mp);
1406         }
1407         skb = alloc_skb(CAPI_DATA_B3_REQ_LEN+CAPI_MAX_BLKSIZE, GFP_ATOMIC);
1408         if (skb) {
1409                 skb_reserve(skb, CAPI_DATA_B3_REQ_LEN);
1410                 *(skb_put(skb, 1)) = ch;
1411                 mp->ttyskb = skb;
1412         } else {
1413                 printk(KERN_ERR "capinc_put_char: char %u lost\n", ch);
1414         }
1415 }
1416
1417 static void capinc_tty_flush_chars(struct tty_struct *tty)
1418 {
1419         struct capiminor *mp = (struct capiminor *)tty->driver_data;
1420         struct sk_buff *skb;
1421
1422 #ifdef _DEBUG_TTYFUNCS
1423         printk(KERN_DEBUG "capinc_tty_flush_chars\n");
1424 #endif
1425
1426         if (!mp || !mp->nccip) {
1427 #ifdef _DEBUG_TTYFUNCS
1428                 printk(KERN_DEBUG "capinc_tty_flush_chars: mp or mp->ncci NULL\n");
1429 #endif
1430                 return;
1431         }
1432
1433         skb = mp->ttyskb;
1434         if (skb) {
1435                 mp->ttyskb = 0;
1436                 skb_queue_tail(&mp->outqueue, skb);
1437                 mp->outbytes += skb->len;
1438                 (void)handle_minor_send(mp);
1439         }
1440         (void)handle_minor_recv(mp);
1441 }
1442
1443 static int capinc_tty_write_room(struct tty_struct *tty)
1444 {
1445         struct capiminor *mp = (struct capiminor *)tty->driver_data;
1446         int room;
1447         if (!mp || !mp->nccip) {
1448 #ifdef _DEBUG_TTYFUNCS
1449                 printk(KERN_DEBUG "capinc_tty_write_room: mp or mp->ncci NULL\n");
1450 #endif
1451                 return 0;
1452         }
1453         room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue);
1454         room *= CAPI_MAX_BLKSIZE;
1455 #ifdef _DEBUG_TTYFUNCS
1456         printk(KERN_DEBUG "capinc_tty_write_room = %d\n", room);
1457 #endif
1458         return room;
1459 }
1460
1461 static int capinc_tty_chars_in_buffer(struct tty_struct *tty)
1462 {
1463         struct capiminor *mp = (struct capiminor *)tty->driver_data;
1464         if (!mp || !mp->nccip) {
1465 #ifdef _DEBUG_TTYFUNCS
1466                 printk(KERN_DEBUG "capinc_tty_chars_in_buffer: mp or mp->ncci NULL\n");
1467 #endif
1468                 return 0;
1469         }
1470 #ifdef _DEBUG_TTYFUNCS
1471         printk(KERN_DEBUG "capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n",
1472                         mp->outbytes, mp->nack,
1473                         skb_queue_len(&mp->outqueue),
1474                         skb_queue_len(&mp->inqueue));
1475 #endif
1476         return mp->outbytes;
1477 }
1478
1479 static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file,
1480                     unsigned int cmd, unsigned long arg)
1481 {
1482         int error = 0;
1483         switch (cmd) {
1484         default:
1485                 error = n_tty_ioctl (tty, file, cmd, arg);
1486                 break;
1487         }
1488         return error;
1489 }
1490
1491 static void capinc_tty_set_termios(struct tty_struct *tty, struct termios * old)
1492 {
1493 #ifdef _DEBUG_TTYFUNCS
1494         printk(KERN_DEBUG "capinc_tty_set_termios\n");
1495 #endif
1496 }
1497
1498 static void capinc_tty_throttle(struct tty_struct * tty)
1499 {
1500         struct capiminor *mp = (struct capiminor *)tty->driver_data;
1501 #ifdef _DEBUG_TTYFUNCS
1502         printk(KERN_DEBUG "capinc_tty_throttle\n");
1503 #endif
1504         if (mp)
1505                 mp->ttyinstop = 1;
1506 }
1507
1508 static void capinc_tty_unthrottle(struct tty_struct * tty)
1509 {
1510         struct capiminor *mp = (struct capiminor *)tty->driver_data;
1511 #ifdef _DEBUG_TTYFUNCS
1512         printk(KERN_DEBUG "capinc_tty_unthrottle\n");
1513 #endif
1514         if (mp) {
1515                 mp->ttyinstop = 0;
1516                 handle_minor_recv(mp);
1517         }
1518 }
1519
1520 static void capinc_tty_stop(struct tty_struct *tty)
1521 {
1522         struct capiminor *mp = (struct capiminor *)tty->driver_data;
1523 #ifdef _DEBUG_TTYFUNCS
1524         printk(KERN_DEBUG "capinc_tty_stop\n");
1525 #endif
1526         if (mp) {
1527                 mp->ttyoutstop = 1;
1528         }
1529 }
1530
1531 static void capinc_tty_start(struct tty_struct *tty)
1532 {
1533         struct capiminor *mp = (struct capiminor *)tty->driver_data;
1534 #ifdef _DEBUG_TTYFUNCS
1535         printk(KERN_DEBUG "capinc_tty_start\n");
1536 #endif
1537         if (mp) {
1538                 mp->ttyoutstop = 0;
1539                 (void)handle_minor_send(mp);
1540         }
1541 }
1542
1543 static void capinc_tty_hangup(struct tty_struct *tty)
1544 {
1545 #ifdef _DEBUG_TTYFUNCS
1546         printk(KERN_DEBUG "capinc_tty_hangup\n");
1547 #endif
1548 }
1549
1550 static void capinc_tty_break_ctl(struct tty_struct *tty, int state)
1551 {
1552 #ifdef _DEBUG_TTYFUNCS
1553         printk(KERN_DEBUG "capinc_tty_break_ctl(%d)\n", state);
1554 #endif
1555 }
1556
1557 static void capinc_tty_flush_buffer(struct tty_struct *tty)
1558 {
1559 #ifdef _DEBUG_TTYFUNCS
1560         printk(KERN_DEBUG "capinc_tty_flush_buffer\n");
1561 #endif
1562 }
1563
1564 static void capinc_tty_set_ldisc(struct tty_struct *tty)
1565 {
1566 #ifdef _DEBUG_TTYFUNCS
1567         printk(KERN_DEBUG "capinc_tty_set_ldisc\n");
1568 #endif
1569 }
1570
1571 static void capinc_tty_send_xchar(struct tty_struct *tty, char ch)
1572 {
1573 #ifdef _DEBUG_TTYFUNCS
1574         printk(KERN_DEBUG "capinc_tty_send_xchar(%d)\n", ch);
1575 #endif
1576 }
1577
1578 static int capinc_tty_read_proc(char *page, char **start, off_t off,
1579                                 int count, int *eof, void *data)
1580 {
1581         return 0;
1582 }
1583
1584 #define CAPINC_NR_PORTS 256
1585 static struct tty_driver capinc_tty_driver;
1586 static int capinc_tty_refcount;
1587 static struct tty_struct *capinc_tty_table[CAPINC_NR_PORTS];
1588 static struct termios *capinc_tty_termios[CAPINC_NR_PORTS];
1589 static struct termios *capinc_tty_termios_locked[CAPINC_NR_PORTS];
1590
1591 static int capinc_tty_init(void)
1592 {
1593         struct tty_driver *drv = &capinc_tty_driver;
1594
1595         /* Initialize the tty_driver structure */
1596
1597         memset(drv, 0, sizeof(struct tty_driver));
1598         drv->magic = TTY_DRIVER_MAGIC;
1599 #if (LINUX_VERSION_CODE > 0x20100)
1600         drv->driver_name = "capi_nc";
1601 #endif
1602         drv->name = "capi/%d";
1603         drv->major = capi_ttymajor;
1604         drv->minor_start = 0;
1605         drv->num = CAPINC_NR_PORTS;
1606         drv->type = TTY_DRIVER_TYPE_SERIAL;
1607         drv->subtype = SERIAL_TYPE_NORMAL;
1608         drv->init_termios = tty_std_termios;
1609         drv->init_termios.c_iflag = ICRNL;
1610         drv->init_termios.c_oflag = OPOST | ONLCR;
1611         drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
1612         drv->init_termios.c_lflag = 0;
1613         drv->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_RESET_TERMIOS;
1614         drv->refcount = &capinc_tty_refcount;
1615         drv->table = capinc_tty_table;
1616         drv->termios = capinc_tty_termios;
1617         drv->termios_locked = capinc_tty_termios_locked;
1618
1619         drv->open = capinc_tty_open;
1620         drv->close = capinc_tty_close;
1621         drv->write = capinc_tty_write;
1622         drv->put_char = capinc_tty_put_char;
1623         drv->flush_chars = capinc_tty_flush_chars;
1624         drv->write_room = capinc_tty_write_room;
1625         drv->chars_in_buffer = capinc_tty_chars_in_buffer;
1626         drv->ioctl = capinc_tty_ioctl;
1627         drv->set_termios = capinc_tty_set_termios;
1628         drv->throttle = capinc_tty_throttle;
1629         drv->unthrottle = capinc_tty_unthrottle;
1630         drv->stop = capinc_tty_stop;
1631         drv->start = capinc_tty_start;
1632         drv->hangup = capinc_tty_hangup;
1633 #if (LINUX_VERSION_CODE >= 131394) /* Linux 2.1.66 */
1634         drv->break_ctl = capinc_tty_break_ctl;
1635 #endif
1636         drv->flush_buffer = capinc_tty_flush_buffer;
1637         drv->set_ldisc = capinc_tty_set_ldisc;
1638 #if (LINUX_VERSION_CODE >= 131343)
1639         drv->send_xchar = capinc_tty_send_xchar;
1640         drv->read_proc = capinc_tty_read_proc;
1641 #endif
1642         if (tty_register_driver(drv)) {
1643                 printk(KERN_ERR "Couldn't register capi_nc driver\n");
1644                 return -1;
1645         }
1646         return 0;
1647 }
1648
1649 static void capinc_tty_exit(void)
1650 {
1651         struct tty_driver *drv = &capinc_tty_driver;
1652         int retval;
1653         if ((retval = tty_unregister_driver(drv)))
1654                 printk(KERN_ERR "capi: failed to unregister capi_nc driver (%d)\n", retval);
1655 }
1656
1657 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1658
1659 /* -------- /proc functions ----------------------------------------- */
1660
1661 /*
1662  * /proc/capi/capi20:
1663  *  minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
1664  */
1665 static int proc_capidev_read_proc(char *page, char **start, off_t off,
1666                                        int count, int *eof, void *data)
1667 {
1668         struct capidev *cdev;
1669         int len = 0;
1670
1671         for (cdev=capidev_openlist; cdev; cdev = cdev->next) {
1672                 len += sprintf(page+len, "%d %d %lu %lu %lu %lu\n",
1673                         cdev->minor,
1674                         cdev->applid,
1675                         cdev->nrecvctlpkt,
1676                         cdev->nrecvdatapkt,
1677                         cdev->nsentctlpkt,
1678                         cdev->nsentdatapkt);
1679                 if (len <= off) {
1680                         off -= len;
1681                         len = 0;
1682                 } else {
1683                         if (len-off > count)
1684                                 goto endloop;
1685                 }
1686         }
1687 endloop:
1688         if (len < count)
1689                 *eof = 1;
1690         if (len>count) len = count;
1691         if (len<0) len = 0;
1692         return len;
1693 }
1694
1695 /*
1696  * /proc/capi/capi20ncci:
1697  *  applid ncci
1698  */
1699 static int proc_capincci_read_proc(char *page, char **start, off_t off,
1700                                        int count, int *eof, void *data)
1701 {
1702         struct capidev *cdev;
1703         struct capincci *np;
1704         int len = 0;
1705
1706         for (cdev=capidev_openlist; cdev; cdev = cdev->next) {
1707                 for (np=cdev->nccis; np; np = np->next) {
1708                         len += sprintf(page+len, "%d 0x%x%s\n",
1709                                 cdev->applid,
1710                                 np->ncci,
1711 #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE
1712                                 "");
1713 #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1714                                 np->minorp && np->minorp->file ? " open" : "");
1715 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1716                         if (len <= off) {
1717                                 off -= len;
1718                                 len = 0;
1719                         } else {
1720                                 if (len-off > count)
1721                                         goto endloop;
1722                         }
1723                 }
1724         }
1725 endloop:
1726         *start = page+off;
1727         if (len < count)
1728                 *eof = 1;
1729         if (len>count) len = count;
1730         if (len<0) len = 0;
1731         return len;
1732 }
1733
1734 static struct procfsentries {
1735   char *name;
1736   mode_t mode;
1737   int (*read_proc)(char *page, char **start, off_t off,
1738                                        int count, int *eof, void *data);
1739   struct proc_dir_entry *procent;
1740 } procfsentries[] = {
1741    /* { "capi",           S_IFDIR, 0 }, */
1742    { "capi/capi20",       0      , proc_capidev_read_proc },
1743    { "capi/capi20ncci",   0      , proc_capincci_read_proc },
1744 };
1745
1746 static void __init proc_init(void)
1747 {
1748     int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
1749     int i;
1750
1751     for (i=0; i < nelem; i++) {
1752         struct procfsentries *p = procfsentries + i;
1753         p->procent = create_proc_entry(p->name, p->mode, 0);
1754         if (p->procent) p->procent->read_proc = p->read_proc;
1755     }
1756 }
1757
1758 static void __exit proc_exit(void)
1759 {
1760     int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
1761     int i;
1762
1763     for (i=nelem-1; i >= 0; i--) {
1764         struct procfsentries *p = procfsentries + i;
1765         if (p->procent) {
1766            remove_proc_entry(p->name, 0);
1767            p->procent = 0;
1768         }
1769     }
1770 }
1771
1772 /* -------- init function and module interface ---------------------- */
1773
1774
1775 static void alloc_exit(void)
1776 {
1777         if (capidev_cachep) {
1778                 (void)kmem_cache_destroy(capidev_cachep);
1779                 capidev_cachep = 0;
1780         }
1781         if (capincci_cachep) {
1782                 (void)kmem_cache_destroy(capincci_cachep);
1783                 capincci_cachep = 0;
1784         }
1785 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1786         if (capidh_cachep) {
1787                 (void)kmem_cache_destroy(capidh_cachep);
1788                 capidh_cachep = 0;
1789         }
1790         if (capiminor_cachep) {
1791                 (void)kmem_cache_destroy(capiminor_cachep);
1792                 capiminor_cachep = 0;
1793         }
1794 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1795 }
1796
1797 static int __init alloc_init(void)
1798 {
1799         capidev_cachep = kmem_cache_create("capi20_dev",
1800                                          sizeof(struct capidev),
1801                                          0,
1802                                          SLAB_HWCACHE_ALIGN,
1803                                          NULL, NULL);
1804         if (!capidev_cachep) {
1805                 alloc_exit();
1806                 return -ENOMEM;
1807         }
1808
1809         capincci_cachep = kmem_cache_create("capi20_ncci",
1810                                          sizeof(struct capincci),
1811                                          0,
1812                                          SLAB_HWCACHE_ALIGN,
1813                                          NULL, NULL);
1814         if (!capincci_cachep) {
1815                 alloc_exit();
1816                 return -ENOMEM;
1817         }
1818 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1819         capidh_cachep = kmem_cache_create("capi20_dh",
1820                                          sizeof(struct datahandle_queue),
1821                                          0,
1822                                          SLAB_HWCACHE_ALIGN,
1823                                          NULL, NULL);
1824         if (!capidh_cachep) {
1825                 alloc_exit();
1826                 return -ENOMEM;
1827         }
1828         capiminor_cachep = kmem_cache_create("capi20_minor",
1829                                          sizeof(struct capiminor),
1830                                          0,
1831                                          SLAB_HWCACHE_ALIGN,
1832                                          NULL, NULL);
1833         if (!capiminor_cachep) {
1834                 alloc_exit();
1835                 return -ENOMEM;
1836         }
1837 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1838         return 0;
1839 }
1840
1841 static void lower_callback(unsigned int cmd, u32 contr, void *data)
1842 {
1843         struct capi_ncciinfo *np;
1844         struct capidev *cdev;
1845
1846         switch (cmd) {
1847         case KCI_CONTRUP:
1848                 printk(KERN_INFO "capi: controller %hu up\n", contr);
1849                 break;
1850         case KCI_CONTRDOWN:
1851                 printk(KERN_INFO "capi: controller %hu down\n", contr);
1852                 break;
1853         case KCI_NCCIUP:
1854                 np = (struct capi_ncciinfo *)data;
1855                 if ((cdev = capidev_find(np->applid)) == 0)
1856                         return;
1857                 (void)capincci_alloc(cdev, np->ncci);
1858                 break;
1859         case KCI_NCCIDOWN:
1860                 np = (struct capi_ncciinfo *)data;
1861                 if ((cdev = capidev_find(np->applid)) == 0)
1862                         return;
1863                 (void)capincci_free(cdev, np->ncci);
1864                 break;
1865         }
1866 }
1867
1868 static struct capi_interface_user cuser = {
1869         name: "capi20",
1870         callback: lower_callback,
1871 };
1872
1873 static char rev[32];
1874
1875 static int __init capi_init(void)
1876 {
1877         char *p;
1878         char *compileinfo;
1879
1880         MOD_INC_USE_COUNT;
1881
1882         if ((p = strchr(revision, ':')) != 0 && p[1]) {
1883                 strncpy(rev, p + 2, sizeof(rev));
1884                 rev[sizeof(rev)-1] = 0;
1885                 if ((p = strchr(rev, '$')) != 0 && p > rev)
1886                    *(p-1) = 0;
1887         } else
1888                 strcpy(rev, "1.0");
1889
1890         if (devfs_register_chrdev(capi_major, "capi20", &capi_fops)) {
1891                 printk(KERN_ERR "capi20: unable to get major %d\n", capi_major);
1892                 MOD_DEC_USE_COUNT;
1893                 return -EIO;
1894         }
1895
1896 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1897         if (devfs_register_chrdev(capi_rawmajor, "capi/r%d", &capinc_raw_fops)) {
1898                 devfs_unregister_chrdev(capi_major, "capi20");
1899                 printk(KERN_ERR "capi20: unable to get major %d\n", capi_rawmajor);
1900                 MOD_DEC_USE_COUNT;
1901                 return -EIO;
1902         }
1903         devfs_register_series (NULL, "capi/r%u", CAPINC_NR_PORTS,
1904                               DEVFS_FL_DEFAULT,
1905                               capi_rawmajor, 0,
1906                               S_IFCHR | S_IRUSR | S_IWUSR,
1907                               &capinc_raw_fops, NULL);
1908 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1909         devfs_register (NULL, "isdn/capi20", DEVFS_FL_DEFAULT,
1910                         capi_major, 0, S_IFCHR | S_IRUSR | S_IWUSR,
1911                         &capi_fops, NULL);
1912         printk(KERN_NOTICE "capi20: started up with major %d\n", capi_major);
1913
1914         if ((capifuncs = attach_capi_interface(&cuser)) == 0) {
1915
1916                 MOD_DEC_USE_COUNT;
1917                 devfs_unregister_chrdev(capi_major, "capi20");
1918 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1919                 devfs_unregister_chrdev(capi_rawmajor, "capi/r%d");
1920 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1921                 devfs_unregister(devfs_find_handle(NULL, "capi20",
1922                                                    capi_major, 0,
1923                                                    DEVFS_SPECIAL_CHR, 0));
1924                 return -EIO;
1925         }
1926
1927 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1928         if (capinc_tty_init() < 0) {
1929                 (void) detach_capi_interface(&cuser);
1930                 devfs_unregister_chrdev(capi_major, "capi20");
1931                 devfs_unregister_chrdev(capi_rawmajor, "capi/r%d");
1932                 MOD_DEC_USE_COUNT;
1933                 return -ENOMEM;
1934         }
1935 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1936
1937         if (alloc_init() < 0) {
1938 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1939                 unsigned int j;
1940                 devfs_unregister_chrdev(capi_rawmajor, "capi/r%d");
1941                 for (j = 0; j < CAPINC_NR_PORTS; j++) {
1942                         char devname[32];
1943                         sprintf(devname, "capi/r%u", j);
1944                         devfs_unregister(devfs_find_handle(NULL, devname, capi_rawmajor, j, DEVFS_SPECIAL_CHR, 0));
1945                 }
1946                 capinc_tty_exit();
1947 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
1948                 (void) detach_capi_interface(&cuser);
1949                 devfs_unregister_chrdev(capi_major, "capi20");
1950                 devfs_unregister(devfs_find_handle(NULL, "capi20",
1951                                                    capi_major, 0,
1952                                                    DEVFS_SPECIAL_CHR, 0));
1953                 MOD_DEC_USE_COUNT;
1954                 return -ENOMEM;
1955         }
1956
1957         (void)proc_init();
1958
1959 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1960 #if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
1961         compileinfo = " (middleware+capifs)";
1962 #else
1963         compileinfo = " (no capifs)";
1964 #endif
1965 #else
1966         compileinfo = " (no middleware)";
1967 #endif
1968         printk(KERN_NOTICE "capi20: Rev %s: started up with major %d%s\n",
1969                                 rev, capi_major, compileinfo);
1970
1971         MOD_DEC_USE_COUNT;
1972         return 0;
1973 }
1974
1975 static void __exit capi_exit(void)
1976 {
1977 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1978         unsigned int j;
1979 #endif
1980         alloc_exit();
1981         (void)proc_exit();
1982
1983         devfs_unregister_chrdev(capi_major, "capi20");
1984         devfs_unregister(devfs_find_handle(NULL, "isdn/capi20", capi_major, 0, DEVFS_SPECIAL_CHR, 0));
1985
1986 #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
1987         capinc_tty_exit();
1988         devfs_unregister_chrdev(capi_rawmajor, "capi/r%d");
1989         for (j = 0; j < CAPINC_NR_PORTS; j++) {
1990                 char devname[32];
1991                 sprintf(devname, "capi/r%u", j);
1992                 devfs_unregister(devfs_find_handle(NULL, devname, capi_rawmajor, j, DEVFS_SPECIAL_CHR, 0));
1993         }
1994 #endif
1995         (void) detach_capi_interface(&cuser);
1996         printk(KERN_NOTICE "capi: Rev %s: unloaded\n", rev);
1997 }
1998
1999 module_init(capi_init);
2000 module_exit(capi_exit);