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 <linux/types.h> 22 #include <linux/errno.h> 23 #include <linux/socket.h> 24 25 /* 26 * ABI Version 32 bit 27 * 28 * <8 bit> Major version 29 * - changed if any interface become backwards incompatible 30 * 31 * <8 bit> Minor version 32 * - changed if any interface is extended but backwards compatible 33 * 34 * <16 bit> Release number 35 * - should be incremented on every checkin 36 */ 37 #define MISDN_MAJOR_VERSION 1 38 #define MISDN_MINOR_VERSION 1 39 #define MISDN_RELEASE 29 40 41 /* primitives for information exchange 42 * generell format 43 * <16 bit 0 > 44 * <8 bit command> 45 * BIT 8 = 1 LAYER private 46 * BIT 7 = 1 answer 47 * BIT 6 = 1 DATA 48 * <8 bit target layer mask> 49 * 50 * Layer = 00 is reserved for general commands 51 Layer = 01 L2 -> HW 52 Layer = 02 HW -> L2 53 Layer = 04 L3 -> L2 54 Layer = 08 L2 -> L3 55 * Layer = FF is reserved for broadcast commands 56 */ 57 58 #define MISDN_CMDMASK 0xff00 59 #define MISDN_LAYERMASK 0x00ff 60 61 /* generell commands */ 62 #define OPEN_CHANNEL 0x0100 63 #define CLOSE_CHANNEL 0x0200 64 #define CONTROL_CHANNEL 0x0300 65 #define CHECK_DATA 0x0400 66 67 /* layer 2 -> layer 1 */ 68 #define PH_ACTIVATE_REQ 0x0101 69 #define PH_DEACTIVATE_REQ 0x0201 70 #define PH_DATA_REQ 0x2001 71 #define MPH_ACTIVATE_REQ 0x0501 72 #define MPH_DEACTIVATE_REQ 0x0601 73 #define MPH_INFORMATION_REQ 0x0701 74 #define PH_CONTROL_REQ 0x0801 75 76 /* layer 1 -> layer 2 */ 77 #define PH_ACTIVATE_IND 0x0102 78 #define PH_ACTIVATE_CNF 0x4102 79 #define PH_DEACTIVATE_IND 0x0202 80 #define PH_DEACTIVATE_CNF 0x4202 81 #define PH_DATA_IND 0x2002 82 #define PH_DATA_E_IND 0x3002 83 #define MPH_ACTIVATE_IND 0x0502 84 #define MPH_DEACTIVATE_IND 0x0602 85 #define MPH_INFORMATION_IND 0x0702 86 #define PH_DATA_CNF 0x6002 87 #define PH_CONTROL_IND 0x0802 88 #define PH_CONTROL_CNF 0x4802 89 90 /* layer 3 -> layer 2 */ 91 #define DL_ESTABLISH_REQ 0x1004 92 #define DL_RELEASE_REQ 0x1104 93 #define DL_DATA_REQ 0x3004 94 #define DL_UNITDATA_REQ 0x3104 95 #define DL_INFORMATION_REQ 0x0004 96 97 /* layer 2 -> layer 3 */ 98 #define DL_ESTABLISH_IND 0x1008 99 #define DL_ESTABLISH_CNF 0x5008 100 #define DL_RELEASE_IND 0x1108 101 #define DL_RELEASE_CNF 0x5108 102 #define DL_DATA_IND 0x3008 103 #define DL_UNITDATA_IND 0x3108 104 #define DL_INFORMATION_IND 0x0008 105 106 /* intern layer 2 management */ 107 #define MDL_ASSIGN_REQ 0x1804 108 #define MDL_ASSIGN_IND 0x1904 109 #define MDL_REMOVE_REQ 0x1A04 110 #define MDL_REMOVE_IND 0x1B04 111 #define MDL_STATUS_UP_IND 0x1C04 112 #define MDL_STATUS_DOWN_IND 0x1D04 113 #define MDL_STATUS_UI_IND 0x1E04 114 #define MDL_ERROR_IND 0x1F04 115 #define MDL_ERROR_RSP 0x5F04 116 117 /* intern layer 2 */ 118 #define DL_TIMER200_IND 0x7004 119 #define DL_TIMER203_IND 0x7304 120 #define DL_INTERN_MSG 0x7804 121 122 /* DL_INFORMATION_IND types */ 123 #define DL_INFO_L2_CONNECT 0x0001 124 #define DL_INFO_L2_REMOVED 0x0002 125 126 /* PH_CONTROL types */ 127 /* TOUCH TONE IS 0x20XX XX "0"..."9", "A","B","C","D","*","#" */ 128 #define DTMF_TONE_VAL 0x2000 129 #define DTMF_TONE_MASK 0x007F 130 #define DTMF_TONE_START 0x2100 131 #define DTMF_TONE_STOP 0x2200 132 #define DTMF_HFC_COEF 0x4000 133 #define DSP_CONF_JOIN 0x2403 134 #define DSP_CONF_SPLIT 0x2404 135 #define DSP_RECEIVE_OFF 0x2405 136 #define DSP_RECEIVE_ON 0x2406 137 #define DSP_ECHO_ON 0x2407 138 #define DSP_ECHO_OFF 0x2408 139 #define DSP_MIX_ON 0x2409 140 #define DSP_MIX_OFF 0x240a 141 #define DSP_DELAY 0x240b 142 #define DSP_JITTER 0x240c 143 #define DSP_TXDATA_ON 0x240d 144 #define DSP_TXDATA_OFF 0x240e 145 #define DSP_TX_DEJITTER 0x240f 146 #define DSP_TX_DEJ_OFF 0x2410 147 #define DSP_TONE_PATT_ON 0x2411 148 #define DSP_TONE_PATT_OFF 0x2412 149 #define DSP_VOL_CHANGE_TX 0x2413 150 #define DSP_VOL_CHANGE_RX 0x2414 151 #define DSP_BF_ENABLE_KEY 0x2415 152 #define DSP_BF_DISABLE 0x2416 153 #define DSP_BF_ACCEPT 0x2416 154 #define DSP_BF_REJECT 0x2417 155 #define DSP_PIPELINE_CFG 0x2418 156 #define HFC_VOL_CHANGE_TX 0x2601 157 #define HFC_VOL_CHANGE_RX 0x2602 158 #define HFC_SPL_LOOP_ON 0x2603 159 #define HFC_SPL_LOOP_OFF 0x2604 160 /* for T30 FAX and analog modem */ 161 #define HW_MOD_FRM 0x4000 162 #define HW_MOD_FRH 0x4001 163 #define HW_MOD_FTM 0x4002 164 #define HW_MOD_FTH 0x4003 165 #define HW_MOD_FTS 0x4004 166 #define HW_MOD_CONNECT 0x4010 167 #define HW_MOD_OK 0x4011 168 #define HW_MOD_NOCARR 0x4012 169 #define HW_MOD_FCERROR 0x4013 170 #define HW_MOD_READY 0x4014 171 #define HW_MOD_LASTDATA 0x4015 172 173 /* DSP_TONE_PATT_ON parameter */ 174 #define TONE_OFF 0x0000 175 #define TONE_GERMAN_DIALTONE 0x0001 176 #define TONE_GERMAN_OLDDIALTONE 0x0002 177 #define TONE_AMERICAN_DIALTONE 0x0003 178 #define TONE_GERMAN_DIALPBX 0x0004 179 #define TONE_GERMAN_OLDDIALPBX 0x0005 180 #define TONE_AMERICAN_DIALPBX 0x0006 181 #define TONE_GERMAN_RINGING 0x0007 182 #define TONE_GERMAN_OLDRINGING 0x0008 183 #define TONE_AMERICAN_RINGPBX 0x000b 184 #define TONE_GERMAN_RINGPBX 0x000c 185 #define TONE_GERMAN_OLDRINGPBX 0x000d 186 #define TONE_AMERICAN_RINGING 0x000e 187 #define TONE_GERMAN_BUSY 0x000f 188 #define TONE_GERMAN_OLDBUSY 0x0010 189 #define TONE_AMERICAN_BUSY 0x0011 190 #define TONE_GERMAN_HANGUP 0x0012 191 #define TONE_GERMAN_OLDHANGUP 0x0013 192 #define TONE_AMERICAN_HANGUP 0x0014 193 #define TONE_SPECIAL_INFO 0x0015 194 #define TONE_GERMAN_GASSENBESETZT 0x0016 195 #define TONE_GERMAN_AUFSCHALTTON 0x0016 196 197 /* MPH_INFORMATION_IND */ 198 #define L1_SIGNAL_LOS_OFF 0x0010 199 #define L1_SIGNAL_LOS_ON 0x0011 200 #define L1_SIGNAL_AIS_OFF 0x0012 201 #define L1_SIGNAL_AIS_ON 0x0013 202 #define L1_SIGNAL_RDI_OFF 0x0014 203 #define L1_SIGNAL_RDI_ON 0x0015 204 #define L1_SIGNAL_SLIP_RX 0x0020 205 #define L1_SIGNAL_SLIP_TX 0x0021 206 207 /* 208 * protocol ids 209 * D channel 1-31 210 * B channel 33 - 63 211 */ 212 213 #define ISDN_P_NONE 0 214 #define ISDN_P_BASE 0 215 #define ISDN_P_TE_S0 0x01 216 #define ISDN_P_NT_S0 0x02 217 #define ISDN_P_TE_E1 0x03 218 #define ISDN_P_NT_E1 0x04 219 #define ISDN_P_TE_UP0 0x05 220 #define ISDN_P_NT_UP0 0x06 221 222 #define IS_ISDN_P_TE(p) ((p == ISDN_P_TE_S0) || (p == ISDN_P_TE_E1) || \ 223 (p == ISDN_P_TE_UP0) || (p == ISDN_P_LAPD_TE)) 224 #define IS_ISDN_P_NT(p) ((p == ISDN_P_NT_S0) || (p == ISDN_P_NT_E1) || \ 225 (p == ISDN_P_NT_UP0) || (p == ISDN_P_LAPD_NT)) 226 #define IS_ISDN_P_S0(p) ((p == ISDN_P_TE_S0) || (p == ISDN_P_NT_S0)) 227 #define IS_ISDN_P_E1(p) ((p == ISDN_P_TE_E1) || (p == ISDN_P_NT_E1)) 228 #define IS_ISDN_P_UP0(p) ((p == ISDN_P_TE_UP0) || (p == ISDN_P_NT_UP0)) 229 230 231 #define ISDN_P_LAPD_TE 0x10 232 #define ISDN_P_LAPD_NT 0x11 233 234 #define ISDN_P_B_MASK 0x1f 235 #define ISDN_P_B_START 0x20 236 237 #define ISDN_P_B_RAW 0x21 238 #define ISDN_P_B_HDLC 0x22 239 #define ISDN_P_B_X75SLP 0x23 240 #define ISDN_P_B_L2DTMF 0x24 241 #define ISDN_P_B_L2DSP 0x25 242 #define ISDN_P_B_L2DSPHDLC 0x26 243 #define ISDN_P_B_T30_FAX 0x27 244 #define ISDN_P_B_MODEM_ASYNC 0x28 245 246 #define OPTION_L2_PMX 1 247 #define OPTION_L2_PTP 2 248 #define OPTION_L2_FIXEDTEI 3 249 #define OPTION_L2_CLEANUP 4 250 #define OPTION_L1_HOLD 5 251 252 /* should be in sync with linux/kobject.h:KOBJ_NAME_LEN */ 253 #define MISDN_MAX_IDLEN 20 254 255 struct mISDNhead { 256 unsigned int prim; 257 unsigned int id; 258 } __packed; 259 260 #define MISDN_HEADER_LEN sizeof(struct mISDNhead) 261 #define MAX_DATA_SIZE 2048 262 #define MAX_DATA_MEM (MAX_DATA_SIZE + MISDN_HEADER_LEN) 263 #define MAX_DFRAME_LEN 260 264 265 #define MISDN_ID_ADDR_MASK 0xFFFF 266 #define MISDN_ID_TEI_MASK 0xFF00 267 #define MISDN_ID_SAPI_MASK 0x00FF 268 #define MISDN_ID_TEI_ANY 0x7F00 269 270 #define MISDN_ID_ANY 0xFFFF 271 #define MISDN_ID_NONE 0xFFFE 272 273 #define GROUP_TEI 127 274 #define TEI_SAPI 63 275 #define CTRL_SAPI 0 276 277 #define MISDN_MAX_CHANNEL 127 278 #define MISDN_CHMAP_SIZE ((MISDN_MAX_CHANNEL + 1) >> 3) 279 280 #define SOL_MISDN 0 281 282 struct sockaddr_mISDN { 283 sa_family_t family; 284 unsigned char dev; 285 unsigned char channel; 286 unsigned char sapi; 287 unsigned char tei; 288 }; 289 290 struct mISDNversion { 291 unsigned char major; 292 unsigned char minor; 293 unsigned short release; 294 }; 295 296 struct mISDN_devinfo { 297 u_int id; 298 u_int Dprotocols; 299 u_int Bprotocols; 300 u_int protocol; 301 u_char channelmap[MISDN_CHMAP_SIZE]; 302 u_int nrbchan; 303 char name[MISDN_MAX_IDLEN]; 304 }; 305 306 struct mISDN_devrename { 307 u_int id; 308 char name[MISDN_MAX_IDLEN]; /* new name */ 309 }; 310 311 /* MPH_INFORMATION_REQ payload */ 312 struct ph_info_ch { 313 __u32 protocol; 314 __u64 Flags; 315 }; 316 317 struct ph_info_dch { 318 struct ph_info_ch ch; 319 __u16 state; 320 __u16 num_bch; 321 }; 322 323 struct ph_info { 324 struct ph_info_dch dch; 325 struct ph_info_ch bch[]; 326 }; 327 328 /* timer device ioctl */ 329 #define IMADDTIMER _IOR('I', 64, int) 330 #define IMDELTIMER _IOR('I', 65, int) 331 332 /* socket ioctls */ 333 #define IMGETVERSION _IOR('I', 66, int) 334 #define IMGETCOUNT _IOR('I', 67, int) 335 #define IMGETDEVINFO _IOR('I', 68, int) 336 #define IMCTRLREQ _IOR('I', 69, int) 337 #define IMCLEAR_L2 _IOR('I', 70, int) 338 #define IMSETDEVNAME _IOR('I', 71, struct mISDN_devrename) 339 #define IMHOLD_L1 _IOR('I', 72, int) 340 341 static inline int test_channelmap(u_int nr,u_char * map)342 test_channelmap(u_int nr, u_char *map) 343 { 344 if (nr <= MISDN_MAX_CHANNEL) 345 return map[nr >> 3] & (1 << (nr & 7)); 346 else 347 return 0; 348 } 349 350 static inline void set_channelmap(u_int nr,u_char * map)351 set_channelmap(u_int nr, u_char *map) 352 { 353 map[nr >> 3] |= (1 << (nr & 7)); 354 } 355 356 static inline void clear_channelmap(u_int nr,u_char * map)357 clear_channelmap(u_int nr, u_char *map) 358 { 359 map[nr >> 3] &= ~(1 << (nr & 7)); 360 } 361 362 /* CONTROL_CHANNEL parameters */ 363 #define MISDN_CTRL_GETOP 0x0000 364 #define MISDN_CTRL_LOOP 0x0001 365 #define MISDN_CTRL_CONNECT 0x0002 366 #define MISDN_CTRL_DISCONNECT 0x0004 367 #define MISDN_CTRL_RX_BUFFER 0x0008 368 #define MISDN_CTRL_PCMCONNECT 0x0010 369 #define MISDN_CTRL_PCMDISCONNECT 0x0020 370 #define MISDN_CTRL_SETPEER 0x0040 371 #define MISDN_CTRL_UNSETPEER 0x0080 372 #define MISDN_CTRL_RX_OFF 0x0100 373 #define MISDN_CTRL_FILL_EMPTY 0x0200 374 #define MISDN_CTRL_GETPEER 0x0400 375 #define MISDN_CTRL_L1_TIMER3 0x0800 376 #define MISDN_CTRL_HW_FEATURES_OP 0x2000 377 #define MISDN_CTRL_HW_FEATURES 0x2001 378 #define MISDN_CTRL_HFC_OP 0x4000 379 #define MISDN_CTRL_HFC_PCM_CONN 0x4001 380 #define MISDN_CTRL_HFC_PCM_DISC 0x4002 381 #define MISDN_CTRL_HFC_CONF_JOIN 0x4003 382 #define MISDN_CTRL_HFC_CONF_SPLIT 0x4004 383 #define MISDN_CTRL_HFC_RECEIVE_OFF 0x4005 384 #define MISDN_CTRL_HFC_RECEIVE_ON 0x4006 385 #define MISDN_CTRL_HFC_ECHOCAN_ON 0x4007 386 #define MISDN_CTRL_HFC_ECHOCAN_OFF 0x4008 387 #define MISDN_CTRL_HFC_WD_INIT 0x4009 388 #define MISDN_CTRL_HFC_WD_RESET 0x400A 389 390 /* special RX buffer value for MISDN_CTRL_RX_BUFFER request.p1 is the minimum 391 * buffer size request.p2 the maximum. Using MISDN_CTRL_RX_SIZE_IGNORE will 392 * not change the value, but still read back the actual stetting. 393 */ 394 #define MISDN_CTRL_RX_SIZE_IGNORE -1 395 396 /* socket options */ 397 #define MISDN_TIME_STAMP 0x0001 398 399 struct mISDN_ctrl_req { 400 int op; 401 int channel; 402 int p1; 403 int p2; 404 }; 405 406 /* muxer options */ 407 #define MISDN_OPT_ALL 1 408 #define MISDN_OPT_TEIMGR 2 409 410 #ifdef __KERNEL__ 411 #include <linux/list.h> 412 #include <linux/skbuff.h> 413 #include <linux/net.h> 414 #include <net/sock.h> 415 #include <linux/completion.h> 416 417 #define DEBUG_CORE 0x000000ff 418 #define DEBUG_CORE_FUNC 0x00000002 419 #define DEBUG_SOCKET 0x00000004 420 #define DEBUG_MANAGER 0x00000008 421 #define DEBUG_SEND_ERR 0x00000010 422 #define DEBUG_MSG_THREAD 0x00000020 423 #define DEBUG_QUEUE_FUNC 0x00000040 424 #define DEBUG_L1 0x0000ff00 425 #define DEBUG_L1_FSM 0x00000200 426 #define DEBUG_L2 0x00ff0000 427 #define DEBUG_L2_FSM 0x00020000 428 #define DEBUG_L2_CTRL 0x00040000 429 #define DEBUG_L2_RECV 0x00080000 430 #define DEBUG_L2_TEI 0x00100000 431 #define DEBUG_L2_TEIFSM 0x00200000 432 #define DEBUG_TIMER 0x01000000 433 #define DEBUG_CLOCK 0x02000000 434 435 #define mISDN_HEAD_P(s) ((struct mISDNhead *)&s->cb[0]) 436 #define mISDN_HEAD_PRIM(s) (((struct mISDNhead *)&s->cb[0])->prim) 437 #define mISDN_HEAD_ID(s) (((struct mISDNhead *)&s->cb[0])->id) 438 439 /* socket states */ 440 #define MISDN_OPEN 1 441 #define MISDN_BOUND 2 442 #define MISDN_CLOSED 3 443 444 struct mISDNchannel; 445 struct mISDNdevice; 446 struct mISDNstack; 447 struct mISDNclock; 448 449 struct channel_req { 450 u_int protocol; 451 struct sockaddr_mISDN adr; 452 struct mISDNchannel *ch; 453 }; 454 455 typedef int (ctrl_func_t)(struct mISDNchannel *, u_int, void *); 456 typedef int (send_func_t)(struct mISDNchannel *, struct sk_buff *); 457 typedef int (create_func_t)(struct channel_req *); 458 459 struct Bprotocol { 460 struct list_head list; 461 char *name; 462 u_int Bprotocols; 463 create_func_t *create; 464 }; 465 466 struct mISDNchannel { 467 struct list_head list; 468 u_int protocol; 469 u_int nr; 470 u_long opt; 471 u_int addr; 472 struct mISDNstack *st; 473 struct mISDNchannel *peer; 474 send_func_t *send; 475 send_func_t *recv; 476 ctrl_func_t *ctrl; 477 }; 478 479 struct mISDN_sock_list { 480 struct hlist_head head; 481 rwlock_t lock; 482 }; 483 484 struct mISDN_sock { 485 struct sock sk; 486 struct mISDNchannel ch; 487 u_int cmask; 488 struct mISDNdevice *dev; 489 }; 490 491 492 493 struct mISDNdevice { 494 struct mISDNchannel D; 495 u_int id; 496 u_int Dprotocols; 497 u_int Bprotocols; 498 u_int nrbchan; 499 u_char channelmap[MISDN_CHMAP_SIZE]; 500 struct list_head bchannels; 501 struct mISDNchannel *teimgr; 502 struct device dev; 503 }; 504 505 struct mISDNstack { 506 u_long status; 507 struct mISDNdevice *dev; 508 struct task_struct *thread; 509 struct completion *notify; 510 wait_queue_head_t workq; 511 struct sk_buff_head msgq; 512 struct list_head layer2; 513 struct mISDNchannel *layer1; 514 struct mISDNchannel own; 515 struct mutex lmutex; /* protect lists */ 516 struct mISDN_sock_list l1sock; 517 #ifdef MISDN_MSG_STATS 518 u_int msg_cnt; 519 u_int sleep_cnt; 520 u_int stopped_cnt; 521 #endif 522 }; 523 524 typedef int (clockctl_func_t)(void *, int); 525 526 struct mISDNclock { 527 struct list_head list; 528 char name[64]; 529 int pri; 530 clockctl_func_t *ctl; 531 void *priv; 532 }; 533 534 /* global alloc/queue functions */ 535 536 static inline struct sk_buff * mI_alloc_skb(unsigned int len,gfp_t gfp_mask)537 mI_alloc_skb(unsigned int len, gfp_t gfp_mask) 538 { 539 struct sk_buff *skb; 540 541 skb = alloc_skb(len + MISDN_HEADER_LEN, gfp_mask); 542 if (likely(skb)) 543 skb_reserve(skb, MISDN_HEADER_LEN); 544 return skb; 545 } 546 547 static inline struct sk_buff * _alloc_mISDN_skb(u_int prim,u_int id,u_int len,void * dp,gfp_t gfp_mask)548 _alloc_mISDN_skb(u_int prim, u_int id, u_int len, void *dp, gfp_t gfp_mask) 549 { 550 struct sk_buff *skb = mI_alloc_skb(len, gfp_mask); 551 struct mISDNhead *hh; 552 553 if (!skb) 554 return NULL; 555 if (len) 556 skb_put_data(skb, dp, len); 557 hh = mISDN_HEAD_P(skb); 558 hh->prim = prim; 559 hh->id = id; 560 return skb; 561 } 562 563 static inline void _queue_data(struct mISDNchannel * ch,u_int prim,u_int id,u_int len,void * dp,gfp_t gfp_mask)564 _queue_data(struct mISDNchannel *ch, u_int prim, 565 u_int id, u_int len, void *dp, gfp_t gfp_mask) 566 { 567 struct sk_buff *skb; 568 569 if (!ch->peer) 570 return; 571 skb = _alloc_mISDN_skb(prim, id, len, dp, gfp_mask); 572 if (!skb) 573 return; 574 if (ch->recv(ch->peer, skb)) 575 dev_kfree_skb(skb); 576 } 577 578 /* global register/unregister functions */ 579 580 extern int mISDN_register_device(struct mISDNdevice *, 581 struct device *parent, char *name); 582 extern void mISDN_unregister_device(struct mISDNdevice *); 583 extern int mISDN_register_Bprotocol(struct Bprotocol *); 584 extern void mISDN_unregister_Bprotocol(struct Bprotocol *); 585 extern struct mISDNclock *mISDN_register_clock(char *, int, clockctl_func_t *, 586 void *); 587 extern void mISDN_unregister_clock(struct mISDNclock *); 588 dev_to_mISDN(const struct device * dev)589 static inline struct mISDNdevice *dev_to_mISDN(const struct device *dev) 590 { 591 if (dev) 592 return dev_get_drvdata(dev); 593 else 594 return NULL; 595 } 596 597 extern void set_channel_address(struct mISDNchannel *, u_int, u_int); 598 extern void mISDN_clock_update(struct mISDNclock *, int, ktime_t *); 599 extern unsigned short mISDN_clock_get(void); 600 extern const char *mISDNDevName4ch(struct mISDNchannel *); 601 602 #endif /* __KERNEL__ */ 603 #endif /* mISDNIF_H */ 604