include/linux/mISDNif.h

   1 /*
   2  *
   3  * Author       Karsten Keil <kkeil@novell.com>
   4  *
   5  * Copyright 2008  by Karsten Keil <kkeil@novell.com>
   6  *
   7  * This code is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE
   9  * version 2.1 as published by the Free Software Foundation.
  10  *
  11  * This code is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU LESSER GENERAL PUBLIC LICENSE for more details.
  15  *
  16  */
  17
  18 #ifndef mISDNIF_H
  19 #define mISDNIF_H
  20
  21 #include <stdarg.h>
  22 #include <linux/types.h>
  23 #include <linux/errno.h>
  24 #include <linux/socket.h>
  25
  26 /*
  27  * ABI Version 32 bit
  28  *
  29  * <8 bit> Major version
  30  *              - changed if any interface become backwards incompatible
  31  *
  32  * <8 bit> Minor version
  33  *              - changed if any interface is extended but backwards compatible
  34  *
  35  * <16 bit> Release number
  36  *              - should be incremented on every checkin
  37  */
  38 #define MISDN_MAJOR_VERSION     1
  39 #define MISDN_MINOR_VERSION     1
  40 #define MISDN_RELEASE           21
  41
  42 /* primitives for information exchange
  43  * generell format
  44  * <16  bit  0 >
  45  * <8  bit command>
  46  *    BIT 8 = 1 LAYER private
  47  *    BIT 7 = 1 answer
  48  *    BIT 6 = 1 DATA
  49  * <8  bit target layer mask>
  50  *
  51  * Layer = 00 is reserved for general commands
  52    Layer = 01  L2 -> HW
  53    Layer = 02  HW -> L2
  54    Layer = 04  L3 -> L2
  55    Layer = 08  L2 -> L3
  56  * Layer = FF is reserved for broadcast commands
  57  */
  58
  59 #define MISDN_CMDMASK           0xff00
  60 #define MISDN_LAYERMASK         0x00ff
  61
  62 /* generell commands */
  63 #define OPEN_CHANNEL            0x0100
  64 #define CLOSE_CHANNEL           0x0200
  65 #define CONTROL_CHANNEL         0x0300
  66 #define CHECK_DATA              0x0400
  67
  68 /* layer 2 -> layer 1 */
  69 #define PH_ACTIVATE_REQ         0x0101
  70 #define PH_DEACTIVATE_REQ       0x0201
  71 #define PH_DATA_REQ             0x2001
  72 #define MPH_ACTIVATE_REQ        0x0501
  73 #define MPH_DEACTIVATE_REQ      0x0601
  74 #define MPH_INFORMATION_REQ     0x0701
  75 #define PH_CONTROL_REQ          0x0801
  76
  77 /* layer 1 -> layer 2 */
  78 #define PH_ACTIVATE_IND         0x0102
  79 #define PH_ACTIVATE_CNF         0x4102
  80 #define PH_DEACTIVATE_IND       0x0202
  81 #define PH_DEACTIVATE_CNF       0x4202
  82 #define PH_DATA_IND             0x2002
  83 #define PH_DATA_E_IND           0x3002
  84 #define MPH_ACTIVATE_IND        0x0502
  85 #define MPH_DEACTIVATE_IND      0x0602
  86 #define MPH_INFORMATION_IND     0x0702
  87 #define PH_DATA_CNF             0x6002
  88 #define PH_CONTROL_IND          0x0802
  89 #define PH_CONTROL_CNF          0x4802
  90
  91 /* layer 3 -> layer 2 */
  92 #define DL_ESTABLISH_REQ        0x1004
  93 #define DL_RELEASE_REQ          0x1104
  94 #define DL_DATA_REQ             0x3004
  95 #define DL_UNITDATA_REQ         0x3104
  96 #define DL_INFORMATION_REQ      0x0004
  97
  98 /* layer 2 -> layer 3 */
  99 #define DL_ESTABLISH_IND        0x1008
 100 #define DL_ESTABLISH_CNF        0x5008
 101 #define DL_RELEASE_IND          0x1108
 102 #define DL_RELEASE_CNF          0x5108
 103 #define DL_DATA_IND             0x3008
 104 #define DL_UNITDATA_IND         0x3108
 105 #define DL_INFORMATION_IND      0x0008
 106
 107 /* intern layer 2 management */
 108 #define MDL_ASSIGN_REQ          0x1804
 109 #define MDL_ASSIGN_IND          0x1904
 110 #define MDL_REMOVE_REQ          0x1A04
 111 #define MDL_REMOVE_IND          0x1B04
 112 #define MDL_STATUS_UP_IND       0x1C04
 113 #define MDL_STATUS_DOWN_IND     0x1D04
 114 #define MDL_STATUS_UI_IND       0x1E04
 115 #define MDL_ERROR_IND           0x1F04
 116 #define MDL_ERROR_RSP           0x5F04
 117
 118 /* DL_INFORMATION_IND types */
 119 #define DL_INFO_L2_CONNECT      0x0001
 120 #define DL_INFO_L2_REMOVED      0x0002
 121
 122 /* PH_CONTROL types */
 123 /* TOUCH TONE IS 0x20XX  XX "0"..."9", "A","B","C","D","*","#" */
 124 #define DTMF_TONE_VAL           0x2000
 125 #define DTMF_TONE_MASK          0x007F
 126 #define DTMF_TONE_START         0x2100
 127 #define DTMF_TONE_STOP          0x2200
 128 #define DTMF_HFC_COEF           0x4000
 129 #define DSP_CONF_JOIN           0x2403
 130 #define DSP_CONF_SPLIT          0x2404
 131 #define DSP_RECEIVE_OFF         0x2405
 132 #define DSP_RECEIVE_ON          0x2406
 133 #define DSP_ECHO_ON             0x2407
 134 #define DSP_ECHO_OFF            0x2408
 135 #define DSP_MIX_ON              0x2409
 136 #define DSP_MIX_OFF             0x240a
 137 #define DSP_DELAY               0x240b
 138 #define DSP_JITTER              0x240c
 139 #define DSP_TXDATA_ON           0x240d
 140 #define DSP_TXDATA_OFF          0x240e
 141 #define DSP_TX_DEJITTER         0x240f
 142 #define DSP_TX_DEJ_OFF          0x2410
 143 #define DSP_TONE_PATT_ON        0x2411
 144 #define DSP_TONE_PATT_OFF       0x2412
 145 #define DSP_VOL_CHANGE_TX       0x2413
 146 #define DSP_VOL_CHANGE_RX       0x2414
 147 #define DSP_BF_ENABLE_KEY       0x2415
 148 #define DSP_BF_DISABLE          0x2416
 149 #define DSP_BF_ACCEPT           0x2416
 150 #define DSP_BF_REJECT           0x2417
 151 #define DSP_PIPELINE_CFG        0x2418
 152 #define HFC_VOL_CHANGE_TX       0x2601
 153 #define HFC_VOL_CHANGE_RX       0x2602
 154 #define HFC_SPL_LOOP_ON         0x2603
 155 #define HFC_SPL_LOOP_OFF        0x2604
 156 /* for T30 FAX and analog modem */
 157 #define HW_MOD_FRM              0x4000
 158 #define HW_MOD_FRH              0x4001
 159 #define HW_MOD_FTM              0x4002
 160 #define HW_MOD_FTH              0x4003
 161 #define HW_MOD_FTS              0x4004
 162 #define HW_MOD_CONNECT          0x4010
 163 #define HW_MOD_OK               0x4011
 164 #define HW_MOD_NOCARR           0x4012
 165 #define HW_MOD_FCERROR          0x4013
 166 #define HW_MOD_READY            0x4014
 167 #define HW_MOD_LASTDATA         0x4015
 168
 169 /* DSP_TONE_PATT_ON parameter */
 170 #define TONE_OFF                        0x0000
 171 #define TONE_GERMAN_DIALTONE            0x0001
 172 #define TONE_GERMAN_OLDDIALTONE         0x0002
 173 #define TONE_AMERICAN_DIALTONE          0x0003
 174 #define TONE_GERMAN_DIALPBX             0x0004
 175 #define TONE_GERMAN_OLDDIALPBX          0x0005
 176 #define TONE_AMERICAN_DIALPBX           0x0006
 177 #define TONE_GERMAN_RINGING             0x0007
 178 #define TONE_GERMAN_OLDRINGING          0x0008
 179 #define TONE_AMERICAN_RINGPBX           0x000b
 180 #define TONE_GERMAN_RINGPBX             0x000c
 181 #define TONE_GERMAN_OLDRINGPBX          0x000d
 182 #define TONE_AMERICAN_RINGING           0x000e
 183 #define TONE_GERMAN_BUSY                0x000f
 184 #define TONE_GERMAN_OLDBUSY             0x0010
 185 #define TONE_AMERICAN_BUSY              0x0011
 186 #define TONE_GERMAN_HANGUP              0x0012
 187 #define TONE_GERMAN_OLDHANGUP           0x0013
 188 #define TONE_AMERICAN_HANGUP            0x0014
 189 #define TONE_SPECIAL_INFO               0x0015
 190 #define TONE_GERMAN_GASSENBESETZT       0x0016
 191 #define TONE_GERMAN_AUFSCHALTTON        0x0016
 192
 193 /* MPH_INFORMATION_IND */
 194 #define L1_SIGNAL_LOS_OFF       0x0010
 195 #define L1_SIGNAL_LOS_ON        0x0011
 196 #define L1_SIGNAL_AIS_OFF       0x0012
 197 #define L1_SIGNAL_AIS_ON        0x0013
 198 #define L1_SIGNAL_RDI_OFF       0x0014
 199 #define L1_SIGNAL_RDI_ON        0x0015
 200 #define L1_SIGNAL_SLIP_RX       0x0020
 201 #define L1_SIGNAL_SLIP_TX       0x0021
 202
 203 /*
 204  * protocol ids
 205  * D channel 1-31
 206  * B channel 33 - 63
 207  */
 208
 209 #define ISDN_P_NONE             0
 210 #define ISDN_P_BASE             0
 211 #define ISDN_P_TE_S0            0x01
 212 #define ISDN_P_NT_S0            0x02
 213 #define ISDN_P_TE_E1            0x03
 214 #define ISDN_P_NT_E1            0x04
 215 #define ISDN_P_TE_UP0           0x05
 216 #define ISDN_P_NT_UP0           0x06
 217
 218 #define IS_ISDN_P_TE(p) ((p == ISDN_P_TE_S0) || (p == ISDN_P_TE_E1) || \
 219                                 (p == ISDN_P_TE_UP0) || (p == ISDN_P_LAPD_TE))
 220 #define IS_ISDN_P_NT(p) ((p == ISDN_P_NT_S0) || (p == ISDN_P_NT_E1) || \
 221                                 (p == ISDN_P_NT_UP0) || (p == ISDN_P_LAPD_NT))
 222 #define IS_ISDN_P_S0(p) ((p == ISDN_P_TE_S0) || (p == ISDN_P_NT_S0))
 223 #define IS_ISDN_P_E1(p) ((p == ISDN_P_TE_E1) || (p == ISDN_P_NT_E1))
 224 #define IS_ISDN_P_UP0(p) ((p == ISDN_P_TE_UP0) || (p == ISDN_P_NT_UP0))
 225
 226
 227 #define ISDN_P_LAPD_TE          0x10
 228 #define ISDN_P_LAPD_NT          0x11
 229
 230 #define ISDN_P_B_MASK           0x1f
 231 #define ISDN_P_B_START          0x20
 232
 233 #define ISDN_P_B_RAW            0x21
 234 #define ISDN_P_B_HDLC           0x22
 235 #define ISDN_P_B_X75SLP         0x23
 236 #define ISDN_P_B_L2DTMF         0x24
 237 #define ISDN_P_B_L2DSP          0x25
 238 #define ISDN_P_B_L2DSPHDLC      0x26
 239 #define ISDN_P_B_T30_FAX        0x27
 240 #define ISDN_P_B_MODEM_ASYNC    0x28
 241
 242 #define OPTION_L2_PMX           1
 243 #define OPTION_L2_PTP           2
 244 #define OPTION_L2_FIXEDTEI      3
 245 #define OPTION_L2_CLEANUP       4
 246 #define OPTION_L1_HOLD          5
 247
 248 /* should be in sync with linux/kobject.h:KOBJ_NAME_LEN */
 249 #define MISDN_MAX_IDLEN         20
 250
 251 struct mISDNhead {
 252         unsigned int    prim;
 253         unsigned int    id;
 254 }  __attribute__((packed));
 255
 256 #define MISDN_HEADER_LEN        sizeof(struct mISDNhead)
 257 #define MAX_DATA_SIZE           2048
 258 #define MAX_DATA_MEM            (MAX_DATA_SIZE + MISDN_HEADER_LEN)
 259 #define MAX_DFRAME_LEN          260
 260
 261 #define MISDN_ID_ADDR_MASK      0xFFFF
 262 #define MISDN_ID_TEI_MASK       0xFF00
 263 #define MISDN_ID_SAPI_MASK      0x00FF
 264 #define MISDN_ID_TEI_ANY        0x7F00
 265
 266 #define MISDN_ID_ANY            0xFFFF
 267 #define MISDN_ID_NONE           0xFFFE
 268
 269 #define GROUP_TEI               127
 270 #define TEI_SAPI                63
 271 #define CTRL_SAPI               0
 272
 273 #define MISDN_MAX_CHANNEL       127
 274 #define MISDN_CHMAP_SIZE        ((MISDN_MAX_CHANNEL + 1) >> 3)
 275
 276 #define SOL_MISDN       0
 277
 278 struct sockaddr_mISDN {
 279         sa_family_t    family;
 280         unsigned char   dev;
 281         unsigned char   channel;
 282         unsigned char   sapi;
 283         unsigned char   tei;
 284 };
 285
 286 struct mISDNversion {
 287         unsigned char   major;
 288         unsigned char   minor;
 289         unsigned short  release;
 290 };
 291
 292 struct mISDN_devinfo {
 293         u_int                   id;
 294         u_int                   Dprotocols;
 295         u_int                   Bprotocols;
 296         u_int                   protocol;
 297         u_char                  channelmap[MISDN_CHMAP_SIZE];
 298         u_int                   nrbchan;
 299         char                    name[MISDN_MAX_IDLEN];
 300 };
 301
 302 struct mISDN_devrename {
 303         u_int                   id;
 304         char                    name[MISDN_MAX_IDLEN]; /* new name */
 305 };
 306
 307 /* MPH_INFORMATION_REQ payload */
 308 struct ph_info_ch {
 309         __u32 protocol;
 310         __u64 Flags;
 311 };
 312
 313 struct ph_info_dch {
 314         struct ph_info_ch ch;
 315         __u16 state;
 316         __u16 num_bch;
 317 };
 318
 319 struct ph_info {
 320         struct ph_info_dch dch;
 321         struct ph_info_ch  bch[];
 322 };
 323
 324 /* timer device ioctl */
 325 #define IMADDTIMER      _IOR('I', 64, int)
 326 #define IMDELTIMER      _IOR('I', 65, int)
 327
 328 /* socket ioctls */
 329 #define IMGETVERSION    _IOR('I', 66, int)
 330 #define IMGETCOUNT      _IOR('I', 67, int)
 331 #define IMGETDEVINFO    _IOR('I', 68, int)
 332 #define IMCTRLREQ       _IOR('I', 69, int)
 333 #define IMCLEAR_L2      _IOR('I', 70, int)
 334 #define IMSETDEVNAME    _IOR('I', 71, struct mISDN_devrename)
 335 #define IMHOLD_L1       _IOR('I', 72, int)
 336
 337 static inline int
 338 test_channelmap(u_int nr, u_char *map)
 339 {
 340         if (nr <= MISDN_MAX_CHANNEL)
 341                 return map[nr >> 3] & (1 << (nr & 7));
 342         else
 343                 return 0;
 344 }
 345
 346 static inline void
 347 set_channelmap(u_int nr, u_char *map)
 348 {
 349         map[nr >> 3] |= (1 << (nr & 7));
 350 }
 351
 352 static inline void
 353 clear_channelmap(u_int nr, u_char *map)
 354 {
 355         map[nr >> 3] &= ~(1 << (nr & 7));
 356 }
 357
 358 /* CONTROL_CHANNEL parameters */
 359 #define MISDN_CTRL_GETOP                0x0000
 360 #define MISDN_CTRL_LOOP                 0x0001
 361 #define MISDN_CTRL_CONNECT              0x0002
 362 #define MISDN_CTRL_DISCONNECT           0x0004
 363 #define MISDN_CTRL_PCMCONNECT           0x0010
 364 #define MISDN_CTRL_PCMDISCONNECT        0x0020
 365 #define MISDN_CTRL_SETPEER              0x0040
 366 #define MISDN_CTRL_UNSETPEER            0x0080
 367 #define MISDN_CTRL_RX_OFF               0x0100
 368 #define MISDN_CTRL_FILL_EMPTY           0x0200
 369 #define MISDN_CTRL_GETPEER              0x0400
 370 #define MISDN_CTRL_HW_FEATURES_OP       0x2000
 371 #define MISDN_CTRL_HW_FEATURES          0x2001
 372 #define MISDN_CTRL_HFC_OP               0x4000
 373 #define MISDN_CTRL_HFC_PCM_CONN         0x4001
 374 #define MISDN_CTRL_HFC_PCM_DISC         0x4002
 375 #define MISDN_CTRL_HFC_CONF_JOIN        0x4003
 376 #define MISDN_CTRL_HFC_CONF_SPLIT       0x4004
 377 #define MISDN_CTRL_HFC_RECEIVE_OFF      0x4005
 378 #define MISDN_CTRL_HFC_RECEIVE_ON       0x4006
 379 #define MISDN_CTRL_HFC_ECHOCAN_ON       0x4007
 380 #define MISDN_CTRL_HFC_ECHOCAN_OFF      0x4008
 381 #define MISDN_CTRL_HFC_WD_INIT          0x4009
 382 #define MISDN_CTRL_HFC_WD_RESET         0x400A
 383
 384 /* socket options */
 385 #define MISDN_TIME_STAMP                0x0001
 386
 387 struct mISDN_ctrl_req {
 388         int             op;
 389         int             channel;
 390         int             p1;
 391         int             p2;
 392 };
 393
 394 /* muxer options */
 395 #define MISDN_OPT_ALL           1
 396 #define MISDN_OPT_TEIMGR        2
 397
 398 #ifdef __KERNEL__
 399 #include <linux/list.h>
 400 #include <linux/skbuff.h>
 401 #include <linux/net.h>
 402 #include <net/sock.h>
 403 #include <linux/completion.h>
 404
 405 #define DEBUG_CORE              0x000000ff
 406 #define DEBUG_CORE_FUNC         0x00000002
 407 #define DEBUG_SOCKET            0x00000004
 408 #define DEBUG_MANAGER           0x00000008
 409 #define DEBUG_SEND_ERR          0x00000010
 410 #define DEBUG_MSG_THREAD        0x00000020
 411 #define DEBUG_QUEUE_FUNC        0x00000040
 412 #define DEBUG_L1                0x0000ff00
 413 #define DEBUG_L1_FSM            0x00000200
 414 #define DEBUG_L2                0x00ff0000
 415 #define DEBUG_L2_FSM            0x00020000
 416 #define DEBUG_L2_CTRL           0x00040000
 417 #define DEBUG_L2_RECV           0x00080000
 418 #define DEBUG_L2_TEI            0x00100000
 419 #define DEBUG_L2_TEIFSM         0x00200000
 420 #define DEBUG_TIMER             0x01000000
 421 #define DEBUG_CLOCK             0x02000000
 422
 423 #define mISDN_HEAD_P(s)         ((struct mISDNhead *)&s->cb[0])
 424 #define mISDN_HEAD_PRIM(s)      (((struct mISDNhead *)&s->cb[0])->prim)
 425 #define mISDN_HEAD_ID(s)        (((struct mISDNhead *)&s->cb[0])->id)
 426
 427 /* socket states */
 428 #define MISDN_OPEN      1
 429 #define MISDN_BOUND     2
 430 #define MISDN_CLOSED    3
 431
 432 struct mISDNchannel;
 433 struct mISDNdevice;
 434 struct mISDNstack;
 435 struct mISDNclock;
 436
 437 struct channel_req {
 438         u_int                   protocol;
 439         struct sockaddr_mISDN   adr;
 440         struct mISDNchannel     *ch;
 441 };
 442
 443 typedef int     (ctrl_func_t)(struct mISDNchannel *, u_int, void *);
 444 typedef int     (send_func_t)(struct mISDNchannel *, struct sk_buff *);
 445 typedef int     (create_func_t)(struct channel_req *);
 446
 447 struct Bprotocol {
 448         struct list_head        list;
 449         char                    *name;
 450         u_int                   Bprotocols;
 451         create_func_t           *create;
 452 };
 453
 454 struct mISDNchannel {
 455         struct list_head        list;
 456         u_int                   protocol;
 457         u_int                   nr;
 458         u_long                  opt;
 459         u_int                   addr;
 460         struct mISDNstack       *st;
 461         struct mISDNchannel     *peer;
 462         send_func_t             *send;
 463         send_func_t             *recv;
 464         ctrl_func_t             *ctrl;
 465 };
 466
 467 struct mISDN_sock_list {
 468         struct hlist_head       head;
 469         rwlock_t                lock;
 470 };
 471
 472 struct mISDN_sock {
 473         struct sock             sk;
 474         struct mISDNchannel     ch;
 475         u_int                   cmask;
 476         struct mISDNdevice      *dev;
 477 };
 478
 479
 480
 481 struct mISDNdevice {
 482         struct mISDNchannel     D;
 483         u_int                   id;
 484         u_int                   Dprotocols;
 485         u_int                   Bprotocols;
 486         u_int                   nrbchan;
 487         u_char                  channelmap[MISDN_CHMAP_SIZE];
 488         struct list_head        bchannels;
 489         struct mISDNchannel     *teimgr;
 490         struct device           dev;
 491 };
 492
 493 struct mISDNstack {
 494         u_long                  status;
 495         struct mISDNdevice      *dev;
 496         struct task_struct      *thread;
 497         struct completion       *notify;
 498         wait_queue_head_t       workq;
 499         struct sk_buff_head     msgq;
 500         struct list_head        layer2;
 501         struct mISDNchannel     *layer1;
 502         struct mISDNchannel     own;
 503         struct mutex            lmutex; /* protect lists */
 504         struct mISDN_sock_list  l1sock;
 505 #ifdef MISDN_MSG_STATS
 506         u_int                   msg_cnt;
 507         u_int                   sleep_cnt;
 508         u_int                   stopped_cnt;
 509 #endif
 510 };
 511
 512 typedef int     (clockctl_func_t)(void *, int);
 513
 514 struct  mISDNclock {
 515         struct list_head        list;
 516         char                    name[64];
 517         int                     pri;
 518         clockctl_func_t         *ctl;
 519         void                    *priv;
 520 };
 521
 522 /* global alloc/queue functions */
 523
 524 static inline struct sk_buff *
 525 mI_alloc_skb(unsigned int len, gfp_t gfp_mask)
 526 {
 527         struct sk_buff  *skb;
 528
 529         skb = alloc_skb(len + MISDN_HEADER_LEN, gfp_mask);
 530         if (likely(skb))
 531                 skb_reserve(skb, MISDN_HEADER_LEN);
 532         return skb;
 533 }
 534
 535 static inline struct sk_buff *
 536 _alloc_mISDN_skb(u_int prim, u_int id, u_int len, void *dp, gfp_t gfp_mask)
 537 {
 538         struct sk_buff  *skb = mI_alloc_skb(len, gfp_mask);
 539         struct mISDNhead *hh;
 540
 541         if (!skb)
 542                 return NULL;
 543         if (len)
 544                 memcpy(skb_put(skb, len), dp, len);
 545         hh = mISDN_HEAD_P(skb);
 546         hh->prim = prim;
 547         hh->id = id;
 548         return skb;
 549 }
 550
 551 static inline void
 552 _queue_data(struct mISDNchannel *ch, u_int prim,
 553     u_int id, u_int len, void *dp, gfp_t gfp_mask)
 554 {
 555         struct sk_buff          *skb;
 556
 557         if (!ch->peer)
 558                 return;
 559         skb = _alloc_mISDN_skb(prim, id, len, dp, gfp_mask);
 560         if (!skb)
 561                 return;
 562         if (ch->recv(ch->peer, skb))
 563                 dev_kfree_skb(skb);
 564 }
 565
 566 /* global register/unregister functions */
 567
 568 extern int      mISDN_register_device(struct mISDNdevice *,
 569                                         struct device *parent, char *name);
 570 extern void     mISDN_unregister_device(struct mISDNdevice *);
 571 extern int      mISDN_register_Bprotocol(struct Bprotocol *);
 572 extern void     mISDN_unregister_Bprotocol(struct Bprotocol *);
 573 extern struct mISDNclock *mISDN_register_clock(char *, int, clockctl_func_t *,
 574                                                 void *);
 575 extern void     mISDN_unregister_clock(struct mISDNclock *);
 576
 577 static inline struct mISDNdevice *dev_to_mISDN(struct device *dev)
 578 {
 579         if (dev)
 580                 return dev_get_drvdata(dev);
 581         else
 582                 return NULL;
 583 }
 584
 585 extern void     set_channel_address(struct mISDNchannel *, u_int, u_int);
 586 extern void     mISDN_clock_update(struct mISDNclock *, int, struct timeval *);
 587 extern unsigned short mISDN_clock_get(void);
 588
 589 #endif /* __KERNEL__ */
 590 #endif /* mISDNIF_H */