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     0
  40 #define MISDN_RELEASE           19
  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 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 managment */
 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 /* DL_INFORMATION_IND types */
 118 #define DL_INFO_L2_CONNECT      0x0001
 119 #define DL_INFO_L2_REMOVED      0x0002
 120
 121 /* PH_CONTROL types */
 122 /* TOUCH TONE IS 0x20XX  XX "0"..."9", "A","B","C","D","*","#" */
 123 #define DTMF_TONE_VAL           0x2000
 124 #define DTMF_TONE_MASK          0x007F
 125 #define DTMF_TONE_START         0x2100
 126 #define DTMF_TONE_STOP          0x2200
 127 #define DTMF_HFC_COEF           0x4000
 128 #define DSP_CONF_JOIN           0x2403
 129 #define DSP_CONF_SPLIT          0x2404
 130 #define DSP_RECEIVE_OFF         0x2405
 131 #define DSP_RECEIVE_ON          0x2406
 132 #define DSP_ECHO_ON             0x2407
 133 #define DSP_ECHO_OFF            0x2408
 134 #define DSP_MIX_ON              0x2409
 135 #define DSP_MIX_OFF             0x240a
 136 #define DSP_DELAY               0x240b
 137 #define DSP_JITTER              0x240c
 138 #define DSP_TXDATA_ON           0x240d
 139 #define DSP_TXDATA_OFF          0x240e
 140 #define DSP_TX_DEJITTER         0x240f
 141 #define DSP_TX_DEJ_OFF          0x2410
 142 #define DSP_TONE_PATT_ON        0x2411
 143 #define DSP_TONE_PATT_OFF       0x2412
 144 #define DSP_VOL_CHANGE_TX       0x2413
 145 #define DSP_VOL_CHANGE_RX       0x2414
 146 #define DSP_BF_ENABLE_KEY       0x2415
 147 #define DSP_BF_DISABLE          0x2416
 148 #define DSP_BF_ACCEPT           0x2416
 149 #define DSP_BF_REJECT           0x2417
 150 #define DSP_PIPELINE_CFG        0x2418
 151 #define HFC_VOL_CHANGE_TX       0x2601
 152 #define HFC_VOL_CHANGE_RX       0x2602
 153 #define HFC_SPL_LOOP_ON         0x2603
 154 #define HFC_SPL_LOOP_OFF        0x2604
 155
 156 /* DSP_TONE_PATT_ON parameter */
 157 #define TONE_OFF                        0x0000
 158 #define TONE_GERMAN_DIALTONE            0x0001
 159 #define TONE_GERMAN_OLDDIALTONE         0x0002
 160 #define TONE_AMERICAN_DIALTONE          0x0003
 161 #define TONE_GERMAN_DIALPBX             0x0004
 162 #define TONE_GERMAN_OLDDIALPBX          0x0005
 163 #define TONE_AMERICAN_DIALPBX           0x0006
 164 #define TONE_GERMAN_RINGING             0x0007
 165 #define TONE_GERMAN_OLDRINGING          0x0008
 166 #define TONE_AMERICAN_RINGPBX           0x000b
 167 #define TONE_GERMAN_RINGPBX             0x000c
 168 #define TONE_GERMAN_OLDRINGPBX          0x000d
 169 #define TONE_AMERICAN_RINGING           0x000e
 170 #define TONE_GERMAN_BUSY                0x000f
 171 #define TONE_GERMAN_OLDBUSY             0x0010
 172 #define TONE_AMERICAN_BUSY              0x0011
 173 #define TONE_GERMAN_HANGUP              0x0012
 174 #define TONE_GERMAN_OLDHANGUP           0x0013
 175 #define TONE_AMERICAN_HANGUP            0x0014
 176 #define TONE_SPECIAL_INFO               0x0015
 177 #define TONE_GERMAN_GASSENBESETZT       0x0016
 178 #define TONE_GERMAN_AUFSCHALTTON        0x0016
 179
 180 /* MPH_INFORMATION_IND */
 181 #define L1_SIGNAL_LOS_OFF       0x0010
 182 #define L1_SIGNAL_LOS_ON        0x0011
 183 #define L1_SIGNAL_AIS_OFF       0x0012
 184 #define L1_SIGNAL_AIS_ON        0x0013
 185 #define L1_SIGNAL_RDI_OFF       0x0014
 186 #define L1_SIGNAL_RDI_ON        0x0015
 187 #define L1_SIGNAL_SLIP_RX       0x0020
 188 #define L1_SIGNAL_SLIP_TX       0x0021
 189
 190 /*
 191  * protocol ids
 192  * D channel 1-31
 193  * B channel 33 - 63
 194  */
 195
 196 #define ISDN_P_NONE             0
 197 #define ISDN_P_BASE             0
 198 #define ISDN_P_TE_S0            0x01
 199 #define ISDN_P_NT_S0            0x02
 200 #define ISDN_P_TE_E1            0x03
 201 #define ISDN_P_NT_E1            0x04
 202 #define ISDN_P_LAPD_TE          0x10
 203 #define ISDN_P_LAPD_NT          0x11
 204
 205 #define ISDN_P_B_MASK           0x1f
 206 #define ISDN_P_B_START          0x20
 207
 208 #define ISDN_P_B_RAW            0x21
 209 #define ISDN_P_B_HDLC           0x22
 210 #define ISDN_P_B_X75SLP         0x23
 211 #define ISDN_P_B_L2DTMF         0x24
 212 #define ISDN_P_B_L2DSP          0x25
 213 #define ISDN_P_B_L2DSPHDLC      0x26
 214
 215 #define OPTION_L2_PMX           1
 216 #define OPTION_L2_PTP           2
 217 #define OPTION_L2_FIXEDTEI      3
 218 #define OPTION_L2_CLEANUP       4
 219
 220 /* should be in sync with linux/kobject.h:KOBJ_NAME_LEN */
 221 #define MISDN_MAX_IDLEN         20
 222
 223 struct mISDNhead {
 224         unsigned int    prim;
 225         unsigned int    id;
 226 }  __attribute__((packed));
 227
 228 #define MISDN_HEADER_LEN        sizeof(struct mISDNhead)
 229 #define MAX_DATA_SIZE           2048
 230 #define MAX_DATA_MEM            (MAX_DATA_SIZE + MISDN_HEADER_LEN)
 231 #define MAX_DFRAME_LEN          260
 232
 233 #define MISDN_ID_ADDR_MASK      0xFFFF
 234 #define MISDN_ID_TEI_MASK       0xFF00
 235 #define MISDN_ID_SAPI_MASK      0x00FF
 236 #define MISDN_ID_TEI_ANY        0x7F00
 237
 238 #define MISDN_ID_ANY            0xFFFF
 239 #define MISDN_ID_NONE           0xFFFE
 240
 241 #define GROUP_TEI               127
 242 #define TEI_SAPI                63
 243 #define CTRL_SAPI               0
 244
 245 #define MISDN_MAX_CHANNEL       127
 246 #define MISDN_CHMAP_SIZE        ((MISDN_MAX_CHANNEL + 1) >> 3)
 247
 248 #define SOL_MISDN       0
 249
 250 struct sockaddr_mISDN {
 251         sa_family_t    family;
 252         unsigned char   dev;
 253         unsigned char   channel;
 254         unsigned char   sapi;
 255         unsigned char   tei;
 256 };
 257
 258 /* timer device ioctl */
 259 #define IMADDTIMER      _IOR('I', 64, int)
 260 #define IMDELTIMER      _IOR('I', 65, int)
 261 /* socket ioctls */
 262 #define IMGETVERSION    _IOR('I', 66, int)
 263 #define IMGETCOUNT      _IOR('I', 67, int)
 264 #define IMGETDEVINFO    _IOR('I', 68, int)
 265 #define IMCTRLREQ       _IOR('I', 69, int)
 266 #define IMCLEAR_L2      _IOR('I', 70, int)
 267
 268 struct mISDNversion {
 269         unsigned char   major;
 270         unsigned char   minor;
 271         unsigned short  release;
 272 };
 273
 274 struct mISDN_devinfo {
 275         u_int                   id;
 276         u_int                   Dprotocols;
 277         u_int                   Bprotocols;
 278         u_int                   protocol;
 279         u_char                  channelmap[MISDN_CHMAP_SIZE];
 280         u_int                   nrbchan;
 281         char                    name[MISDN_MAX_IDLEN];
 282 };
 283
 284 static inline int
 285 test_channelmap(u_int nr, u_char *map)
 286 {
 287         if (nr <= MISDN_MAX_CHANNEL)
 288                 return map[nr >> 3] & (1 << (nr & 7));
 289         else
 290                 return 0;
 291 }
 292
 293 static inline void
 294 set_channelmap(u_int nr, u_char *map)
 295 {
 296         map[nr >> 3] |= (1 << (nr & 7));
 297 }
 298
 299 static inline void
 300 clear_channelmap(u_int nr, u_char *map)
 301 {
 302         map[nr >> 3] &= ~(1 << (nr & 7));
 303 }
 304
 305 /* CONTROL_CHANNEL parameters */
 306 #define MISDN_CTRL_GETOP                0x0000
 307 #define MISDN_CTRL_LOOP                 0x0001
 308 #define MISDN_CTRL_CONNECT              0x0002
 309 #define MISDN_CTRL_DISCONNECT           0x0004
 310 #define MISDN_CTRL_PCMCONNECT           0x0010
 311 #define MISDN_CTRL_PCMDISCONNECT        0x0020
 312 #define MISDN_CTRL_SETPEER              0x0040
 313 #define MISDN_CTRL_UNSETPEER            0x0080
 314 #define MISDN_CTRL_RX_OFF               0x0100
 315 #define MISDN_CTRL_HW_FEATURES_OP       0x2000
 316 #define MISDN_CTRL_HW_FEATURES          0x2001
 317 #define MISDN_CTRL_HFC_OP               0x4000
 318 #define MISDN_CTRL_HFC_PCM_CONN         0x4001
 319 #define MISDN_CTRL_HFC_PCM_DISC         0x4002
 320 #define MISDN_CTRL_HFC_CONF_JOIN        0x4003
 321 #define MISDN_CTRL_HFC_CONF_SPLIT       0x4004
 322 #define MISDN_CTRL_HFC_RECEIVE_OFF      0x4005
 323 #define MISDN_CTRL_HFC_RECEIVE_ON       0x4006
 324 #define MISDN_CTRL_HFC_ECHOCAN_ON       0x4007
 325 #define MISDN_CTRL_HFC_ECHOCAN_OFF      0x4008
 326
 327
 328 /* socket options */
 329 #define MISDN_TIME_STAMP                0x0001
 330
 331 struct mISDN_ctrl_req {
 332         int             op;
 333         int             channel;
 334         int             p1;
 335         int             p2;
 336 };
 337
 338 /* muxer options */
 339 #define MISDN_OPT_ALL           1
 340 #define MISDN_OPT_TEIMGR        2
 341
 342 #ifdef __KERNEL__
 343 #include <linux/list.h>
 344 #include <linux/skbuff.h>
 345 #include <linux/net.h>
 346 #include <net/sock.h>
 347 #include <linux/completion.h>
 348
 349 #define DEBUG_CORE              0x000000ff
 350 #define DEBUG_CORE_FUNC         0x00000002
 351 #define DEBUG_SOCKET            0x00000004
 352 #define DEBUG_MANAGER           0x00000008
 353 #define DEBUG_SEND_ERR          0x00000010
 354 #define DEBUG_MSG_THREAD        0x00000020
 355 #define DEBUG_QUEUE_FUNC        0x00000040
 356 #define DEBUG_L1                0x0000ff00
 357 #define DEBUG_L1_FSM            0x00000200
 358 #define DEBUG_L2                0x00ff0000
 359 #define DEBUG_L2_FSM            0x00020000
 360 #define DEBUG_L2_CTRL           0x00040000
 361 #define DEBUG_L2_RECV           0x00080000
 362 #define DEBUG_L2_TEI            0x00100000
 363 #define DEBUG_L2_TEIFSM         0x00200000
 364 #define DEBUG_TIMER             0x01000000
 365
 366 #define mISDN_HEAD_P(s)         ((struct mISDNhead *)&s->cb[0])
 367 #define mISDN_HEAD_PRIM(s)      (((struct mISDNhead *)&s->cb[0])->prim)
 368 #define mISDN_HEAD_ID(s)        (((struct mISDNhead *)&s->cb[0])->id)
 369
 370 /* socket states */
 371 #define MISDN_OPEN      1
 372 #define MISDN_BOUND     2
 373 #define MISDN_CLOSED    3
 374
 375 struct mISDNchannel;
 376 struct mISDNdevice;
 377 struct mISDNstack;
 378
 379 struct channel_req {
 380         u_int                   protocol;
 381         struct sockaddr_mISDN   adr;
 382         struct mISDNchannel     *ch;
 383 };
 384
 385 typedef int     (ctrl_func_t)(struct mISDNchannel *, u_int, void *);
 386 typedef int     (send_func_t)(struct mISDNchannel *, struct sk_buff *);
 387 typedef int     (create_func_t)(struct channel_req *);
 388
 389 struct Bprotocol {
 390         struct list_head        list;
 391         char                    *name;
 392         u_int                   Bprotocols;
 393         create_func_t           *create;
 394 };
 395
 396 struct mISDNchannel {
 397         struct list_head        list;
 398         u_int                   protocol;
 399         u_int                   nr;
 400         u_long                  opt;
 401         u_int                   addr;
 402         struct mISDNstack       *st;
 403         struct mISDNchannel     *peer;
 404         send_func_t             *send;
 405         send_func_t             *recv;
 406         ctrl_func_t             *ctrl;
 407 };
 408
 409 struct mISDN_sock_list {
 410         struct hlist_head       head;
 411         rwlock_t                lock;
 412 };
 413
 414 struct mISDN_sock {
 415         struct sock             sk;
 416         struct mISDNchannel     ch;
 417         u_int                   cmask;
 418         struct mISDNdevice      *dev;
 419 };
 420
 421
 422
 423 struct mISDNdevice {
 424         struct mISDNchannel     D;
 425         u_int                   id;
 426         char                    name[MISDN_MAX_IDLEN];
 427         u_int                   Dprotocols;
 428         u_int                   Bprotocols;
 429         u_int                   nrbchan;
 430         u_char                  channelmap[MISDN_CHMAP_SIZE];
 431         struct list_head        bchannels;
 432         struct mISDNchannel     *teimgr;
 433         struct device           dev;
 434 };
 435
 436 struct mISDNstack {
 437         u_long                  status;
 438         struct mISDNdevice      *dev;
 439         struct task_struct      *thread;
 440         struct completion       *notify;
 441         wait_queue_head_t       workq;
 442         struct sk_buff_head     msgq;
 443         struct list_head        layer2;
 444         struct mISDNchannel     *layer1;
 445         struct mISDNchannel     own;
 446         struct mutex            lmutex; /* protect lists */
 447         struct mISDN_sock_list  l1sock;
 448 #ifdef MISDN_MSG_STATS
 449         u_int                   msg_cnt;
 450         u_int                   sleep_cnt;
 451         u_int                   stopped_cnt;
 452 #endif
 453 };
 454
 455 /* global alloc/queue functions */
 456
 457 static inline struct sk_buff *
 458 mI_alloc_skb(unsigned int len, gfp_t gfp_mask)
 459 {
 460         struct sk_buff  *skb;
 461
 462         skb = alloc_skb(len + MISDN_HEADER_LEN, gfp_mask);
 463         if (likely(skb))
 464                 skb_reserve(skb, MISDN_HEADER_LEN);
 465         return skb;
 466 }
 467
 468 static inline struct sk_buff *
 469 _alloc_mISDN_skb(u_int prim, u_int id, u_int len, void *dp, gfp_t gfp_mask)
 470 {
 471         struct sk_buff  *skb = mI_alloc_skb(len, gfp_mask);
 472         struct mISDNhead *hh;
 473
 474         if (!skb)
 475                 return NULL;
 476         if (len)
 477                 memcpy(skb_put(skb, len), dp, len);
 478         hh = mISDN_HEAD_P(skb);
 479         hh->prim = prim;
 480         hh->id = id;
 481         return skb;
 482 }
 483
 484 static inline void
 485 _queue_data(struct mISDNchannel *ch, u_int prim,
 486     u_int id, u_int len, void *dp, gfp_t gfp_mask)
 487 {
 488         struct sk_buff          *skb;
 489
 490         if (!ch->peer)
 491                 return;
 492         skb = _alloc_mISDN_skb(prim, id, len, dp, gfp_mask);
 493         if (!skb)
 494                 return;
 495         if (ch->recv(ch->peer, skb))
 496                 dev_kfree_skb(skb);
 497 }
 498
 499 /* global register/unregister functions */
 500
 501 extern int      mISDN_register_device(struct mISDNdevice *, char *name);
 502 extern void     mISDN_unregister_device(struct mISDNdevice *);
 503 extern int      mISDN_register_Bprotocol(struct Bprotocol *);
 504 extern void     mISDN_unregister_Bprotocol(struct Bprotocol *);
 505
 506 extern void     set_channel_address(struct mISDNchannel *, u_int, u_int);
 507
 508 #endif /* __KERNEL__ */
 509 #endif /* mISDNIF_H */