linux/include/linux/isdnif.h
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   1/* $Id: isdnif.h,v 1.43.2.2 2004/01/12 23:08:35 keil Exp $
   2 *
   3 * Linux ISDN subsystem
   4 * Definition of the interface between the subsystem and its low-level drivers.
   5 *
   6 * Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de)
   7 * Copyright 1995,96    Thinking Objects Software GmbH Wuerzburg
   8 * 
   9 * This software may be used and distributed according to the terms
  10 * of the GNU General Public License, incorporated herein by reference.
  11 *
  12 */
  13#ifndef __ISDNIF_H__
  14#define __ISDNIF_H__
  15
  16
  17#include <linux/skbuff.h>
  18#include <uapi/linux/isdnif.h>
  19
  20/***************************************************************************/
  21/* Extensions made by Werner Cornelius (werner@ikt.de)                     */
  22/*                                                                         */ 
  23/* The proceed command holds a incoming call in a state to leave processes */
  24/* enough time to check whether ist should be accepted.                    */
  25/* The PROT_IO Command extends the interface to make protocol dependent    */
  26/* features available (call diversion, call waiting...).                   */
  27/*                                                                         */ 
  28/* The PROT_IO Command is executed with the desired driver id and the arg  */
  29/* parameter coded as follows:                                             */
  30/* The lower 8 bits of arg contain the desired protocol from ISDN_PTYPE    */
  31/* definitions. The upper 24 bits represent the protocol specific cmd/stat.*/
  32/* Any additional data is protocol and command specific.                   */
  33/* This mechanism also applies to the statcallb callback STAT_PROT.        */    
  34/*                                                                         */
  35/* This suggested extension permits an easy expansion of protocol specific */
  36/* handling. Extensions may be added at any time without changing the HL   */
  37/* driver code and not getting conflicts without certifications.           */
  38/* The well known CAPI 2.0 interface handles such extensions in a similar  */
  39/* way. Perhaps a protocol specific module may be added and separately     */
  40/* loaded and linked to the basic isdn module for handling.                */                    
  41/***************************************************************************/
  42
  43/*****************/
  44/* DSS1 commands */ 
  45/*****************/
  46#define DSS1_CMD_INVOKE       ((0x00 << 8) | ISDN_PTYPE_EURO)   /* invoke a supplementary service */
  47#define DSS1_CMD_INVOKE_ABORT ((0x01 << 8) | ISDN_PTYPE_EURO)   /* abort a invoke cmd */
  48
  49/*******************************/
  50/* DSS1 Status callback values */
  51/*******************************/
  52#define DSS1_STAT_INVOKE_RES  ((0x80 << 8) | ISDN_PTYPE_EURO)   /* Result for invocation */
  53#define DSS1_STAT_INVOKE_ERR  ((0x81 << 8) | ISDN_PTYPE_EURO)   /* Error Return for invocation */
  54#define DSS1_STAT_INVOKE_BRD  ((0x82 << 8) | ISDN_PTYPE_EURO)   /* Deliver invoke broadcast info */
  55
  56
  57/*********************************************************************/
  58/* structures for DSS1 commands and callback                         */
  59/*                                                                   */
  60/* An action is invoked by sending a DSS1_CMD_INVOKE. The ll_id, proc*/
  61/* timeout, datalen and data fields must be set before calling.      */
  62/*                                                                   */
  63/* The return value is a positive hl_id value also delivered in the  */
  64/* hl_id field. A value of zero signals no more left hl_id capacitys.*/
  65/* A negative return value signals errors in LL. So if the return    */
  66/* value is <= 0 no action in LL will be taken -> request ignored    */
  67/*                                                                   */
  68/* The timeout field must be filled with a positive value specifying */
  69/* the amount of time the INVOKED process waits for a reaction from  */
  70/* the network.                                                      */
  71/* If a response (either error or result) is received during this    */
  72/* intervall, a reporting callback is initiated and the process will */
  73/* be deleted, the hl identifier will be freed.                      */
  74/* If no response is received during the specified intervall, a error*/
  75/* callback is initiated with timeout set to -1 and a datalen set    */
  76/* to 0.                                                             */
  77/* If timeout is set to a value <= 0 during INVOCATION the process is*/
  78/* immediately deleted after sending the data. No callback occurs !  */
  79/*                                                                   */
  80/* A currently waiting process may be aborted with INVOKE_ABORT. No  */
  81/* callback will occur when a process has been aborted.              */
  82/*                                                                   */
  83/* Broadcast invoke frames from the network are reported via the     */
  84/* STAT_INVOKE_BRD callback. The ll_id is set to 0, the other fields */
  85/* are supplied by the network and not by the HL.                    */   
  86/*********************************************************************/
  87
  88/*****************/
  89/* NI1 commands */ 
  90/*****************/
  91#define NI1_CMD_INVOKE       ((0x00 << 8) | ISDN_PTYPE_NI1)   /* invoke a supplementary service */
  92#define NI1_CMD_INVOKE_ABORT ((0x01 << 8) | ISDN_PTYPE_NI1)   /* abort a invoke cmd */
  93
  94/*******************************/
  95/* NI1 Status callback values */
  96/*******************************/
  97#define NI1_STAT_INVOKE_RES  ((0x80 << 8) | ISDN_PTYPE_NI1)   /* Result for invocation */
  98#define NI1_STAT_INVOKE_ERR  ((0x81 << 8) | ISDN_PTYPE_NI1)   /* Error Return for invocation */
  99#define NI1_STAT_INVOKE_BRD  ((0x82 << 8) | ISDN_PTYPE_NI1)   /* Deliver invoke broadcast info */
 100
 101typedef struct
 102  { ulong ll_id; /* ID supplied by LL when executing    */
 103                 /* a command and returned by HL for    */
 104                 /* INVOKE_RES and INVOKE_ERR           */
 105    int hl_id;   /* ID supplied by HL when called       */
 106                 /* for executing a cmd and delivered   */
 107                 /* for results and errors              */
 108                 /* must be supplied by LL when aborting*/  
 109    int proc;    /* invoke procedure used by CMD_INVOKE */
 110                 /* returned by callback and broadcast  */ 
 111    int timeout; /* timeout for INVOKE CMD in ms        */
 112                 /* -1  in stat callback when timed out */
 113                 /* error value when error callback     */
 114    int datalen; /* length of cmd or stat data          */
 115    u_char *data;/* pointer to data delivered or send   */
 116  } isdn_cmd_stat;
 117
 118/*
 119 * Commands from linklevel to lowlevel
 120 *
 121 */
 122#define ISDN_CMD_IOCTL    0       /* Perform ioctl                         */
 123#define ISDN_CMD_DIAL     1       /* Dial out                              */
 124#define ISDN_CMD_ACCEPTD  2       /* Accept an incoming call on D-Chan.    */
 125#define ISDN_CMD_ACCEPTB  3       /* Request B-Channel connect.            */
 126#define ISDN_CMD_HANGUP   4       /* Hangup                                */
 127#define ISDN_CMD_CLREAZ   5       /* Clear EAZ(s) of channel               */
 128#define ISDN_CMD_SETEAZ   6       /* Set EAZ(s) of channel                 */
 129#define ISDN_CMD_GETEAZ   7       /* Get EAZ(s) of channel                 */
 130#define ISDN_CMD_SETSIL   8       /* Set Service-Indicator-List of channel */
 131#define ISDN_CMD_GETSIL   9       /* Get Service-Indicator-List of channel */
 132#define ISDN_CMD_SETL2   10       /* Set B-Chan. Layer2-Parameter          */
 133#define ISDN_CMD_GETL2   11       /* Get B-Chan. Layer2-Parameter          */
 134#define ISDN_CMD_SETL3   12       /* Set B-Chan. Layer3-Parameter          */
 135#define ISDN_CMD_GETL3   13       /* Get B-Chan. Layer3-Parameter          */
 136// #define ISDN_CMD_LOCK    14       /* Signal usage by upper levels          */
 137// #define ISDN_CMD_UNLOCK  15       /* Release usage-lock                    */
 138#define ISDN_CMD_SUSPEND 16       /* Suspend connection                    */
 139#define ISDN_CMD_RESUME  17       /* Resume connection                     */
 140#define ISDN_CMD_PROCEED 18       /* Proceed with call establishment       */
 141#define ISDN_CMD_ALERT   19       /* Alert after Proceeding                */
 142#define ISDN_CMD_REDIR   20       /* Redir a incoming call                 */
 143#define ISDN_CMD_PROT_IO 21       /* Protocol specific commands            */
 144#define CAPI_PUT_MESSAGE 22       /* CAPI message send down or up          */
 145#define ISDN_CMD_FAXCMD  23       /* FAX commands to HL-driver             */
 146#define ISDN_CMD_AUDIO   24       /* DSP, DTMF, ... settings               */
 147
 148/*
 149 * Status-Values delivered from lowlevel to linklevel via
 150 * statcallb().
 151 *
 152 */
 153#define ISDN_STAT_STAVAIL 256    /* Raw status-data available             */
 154#define ISDN_STAT_ICALL   257    /* Incoming call detected                */
 155#define ISDN_STAT_RUN     258    /* Signal protocol-code is running       */
 156#define ISDN_STAT_STOP    259    /* Signal halt of protocol-code          */
 157#define ISDN_STAT_DCONN   260    /* Signal D-Channel connect              */
 158#define ISDN_STAT_BCONN   261    /* Signal B-Channel connect              */
 159#define ISDN_STAT_DHUP    262    /* Signal D-Channel disconnect           */
 160#define ISDN_STAT_BHUP    263    /* Signal B-Channel disconnect           */
 161#define ISDN_STAT_CINF    264    /* Charge-Info                           */
 162#define ISDN_STAT_LOAD    265    /* Signal new lowlevel-driver is loaded  */
 163#define ISDN_STAT_UNLOAD  266    /* Signal unload of lowlevel-driver      */
 164#define ISDN_STAT_BSENT   267    /* Signal packet sent                    */
 165#define ISDN_STAT_NODCH   268    /* Signal no D-Channel                   */
 166#define ISDN_STAT_ADDCH   269    /* Add more Channels                     */
 167#define ISDN_STAT_CAUSE   270    /* Cause-Message                         */
 168#define ISDN_STAT_ICALLW  271    /* Incoming call without B-chan waiting  */
 169#define ISDN_STAT_REDIR   272    /* Redir result                          */
 170#define ISDN_STAT_PROT    273    /* protocol IO specific callback         */
 171#define ISDN_STAT_DISPLAY 274    /* deliver a received display message    */
 172#define ISDN_STAT_L1ERR   275    /* Signal Layer-1 Error                  */
 173#define ISDN_STAT_FAXIND  276    /* FAX indications from HL-driver        */
 174#define ISDN_STAT_AUDIO   277    /* DTMF, DSP indications                 */
 175#define ISDN_STAT_DISCH   278    /* Disable/Enable channel usage          */
 176
 177/*
 178 * Audio commands
 179 */
 180#define ISDN_AUDIO_SETDD        0       /* Set DTMF detection           */
 181#define ISDN_AUDIO_DTMF         1       /* Rx/Tx DTMF                   */
 182
 183/*
 184 * Values for errcode field
 185 */
 186#define ISDN_STAT_L1ERR_SEND 1
 187#define ISDN_STAT_L1ERR_RECV 2
 188
 189/*
 190 * Values for feature-field of interface-struct.
 191 */
 192/* Layer 2 */
 193#define ISDN_FEATURE_L2_X75I    (0x0001 << ISDN_PROTO_L2_X75I)
 194#define ISDN_FEATURE_L2_X75UI   (0x0001 << ISDN_PROTO_L2_X75UI)
 195#define ISDN_FEATURE_L2_X75BUI  (0x0001 << ISDN_PROTO_L2_X75BUI)
 196#define ISDN_FEATURE_L2_HDLC    (0x0001 << ISDN_PROTO_L2_HDLC)
 197#define ISDN_FEATURE_L2_TRANS   (0x0001 << ISDN_PROTO_L2_TRANS)
 198#define ISDN_FEATURE_L2_X25DTE  (0x0001 << ISDN_PROTO_L2_X25DTE)
 199#define ISDN_FEATURE_L2_X25DCE  (0x0001 << ISDN_PROTO_L2_X25DCE)
 200#define ISDN_FEATURE_L2_V11096  (0x0001 << ISDN_PROTO_L2_V11096)
 201#define ISDN_FEATURE_L2_V11019  (0x0001 << ISDN_PROTO_L2_V11019)
 202#define ISDN_FEATURE_L2_V11038  (0x0001 << ISDN_PROTO_L2_V11038)
 203#define ISDN_FEATURE_L2_MODEM   (0x0001 << ISDN_PROTO_L2_MODEM)
 204#define ISDN_FEATURE_L2_FAX     (0x0001 << ISDN_PROTO_L2_FAX)
 205#define ISDN_FEATURE_L2_HDLC_56K (0x0001 << ISDN_PROTO_L2_HDLC_56K)
 206
 207#define ISDN_FEATURE_L2_MASK    (0x0FFFF) /* Max. 16 protocols */
 208#define ISDN_FEATURE_L2_SHIFT   (0)
 209
 210/* Layer 3 */
 211#define ISDN_FEATURE_L3_TRANS   (0x10000 << ISDN_PROTO_L3_TRANS)
 212#define ISDN_FEATURE_L3_TRANSDSP (0x10000 << ISDN_PROTO_L3_TRANSDSP)
 213#define ISDN_FEATURE_L3_FCLASS2 (0x10000 << ISDN_PROTO_L3_FCLASS2)
 214#define ISDN_FEATURE_L3_FCLASS1 (0x10000 << ISDN_PROTO_L3_FCLASS1)
 215
 216#define ISDN_FEATURE_L3_MASK    (0x0FF0000) /* Max. 8 Protocols */
 217#define ISDN_FEATURE_L3_SHIFT   (16)
 218
 219/* Signaling */
 220#define ISDN_FEATURE_P_UNKNOWN  (0x1000000 << ISDN_PTYPE_UNKNOWN)
 221#define ISDN_FEATURE_P_1TR6     (0x1000000 << ISDN_PTYPE_1TR6)
 222#define ISDN_FEATURE_P_EURO     (0x1000000 << ISDN_PTYPE_EURO)
 223#define ISDN_FEATURE_P_NI1      (0x1000000 << ISDN_PTYPE_NI1)
 224
 225#define ISDN_FEATURE_P_MASK     (0x0FF000000) /* Max. 8 Protocols */
 226#define ISDN_FEATURE_P_SHIFT    (24)
 227
 228typedef struct setup_parm {
 229    unsigned char phone[32];    /* Remote Phone-Number */
 230    unsigned char eazmsn[32];   /* Local EAZ or MSN    */
 231    unsigned char si1;      /* Service Indicator 1 */
 232    unsigned char si2;      /* Service Indicator 2 */
 233    unsigned char plan;     /* Numbering plan      */
 234    unsigned char screen;   /* Screening info      */
 235} setup_parm;
 236
 237
 238#ifdef CONFIG_ISDN_TTY_FAX
 239/* T.30 Fax G3 */
 240
 241#define FAXIDLEN 21
 242
 243typedef struct T30_s {
 244        /* session parameters */
 245        __u8 resolution;
 246        __u8 rate;
 247        __u8 width;
 248        __u8 length;
 249        __u8 compression;
 250        __u8 ecm;
 251        __u8 binary;
 252        __u8 scantime;
 253        __u8 id[FAXIDLEN];
 254        /* additional parameters */
 255        __u8 phase;
 256        __u8 direction;
 257        __u8 code;
 258        __u8 badlin;
 259        __u8 badmul;
 260        __u8 bor;
 261        __u8 fet;
 262        __u8 pollid[FAXIDLEN];
 263        __u8 cq;
 264        __u8 cr;
 265        __u8 ctcrty;
 266        __u8 minsp;
 267        __u8 phcto;
 268        __u8 rel;
 269        __u8 nbc;
 270        /* remote station parameters */
 271        __u8 r_resolution;
 272        __u8 r_rate;
 273        __u8 r_width;
 274        __u8 r_length;
 275        __u8 r_compression;
 276        __u8 r_ecm;
 277        __u8 r_binary;
 278        __u8 r_scantime;
 279        __u8 r_id[FAXIDLEN];
 280        __u8 r_code;
 281} __packed T30_s;
 282
 283#define ISDN_TTY_FAX_CONN_IN    0
 284#define ISDN_TTY_FAX_CONN_OUT   1
 285
 286#define ISDN_TTY_FAX_FCON       0
 287#define ISDN_TTY_FAX_DIS        1
 288#define ISDN_TTY_FAX_FTT        2
 289#define ISDN_TTY_FAX_MCF        3
 290#define ISDN_TTY_FAX_DCS        4
 291#define ISDN_TTY_FAX_TRAIN_OK   5
 292#define ISDN_TTY_FAX_EOP        6
 293#define ISDN_TTY_FAX_EOM        7
 294#define ISDN_TTY_FAX_MPS        8
 295#define ISDN_TTY_FAX_DTC        9
 296#define ISDN_TTY_FAX_RID        10
 297#define ISDN_TTY_FAX_HNG        11
 298#define ISDN_TTY_FAX_DT         12
 299#define ISDN_TTY_FAX_FCON_I     13
 300#define ISDN_TTY_FAX_DR         14
 301#define ISDN_TTY_FAX_ET         15
 302#define ISDN_TTY_FAX_CFR        16
 303#define ISDN_TTY_FAX_PTS        17
 304#define ISDN_TTY_FAX_SENT       18
 305
 306#define ISDN_FAX_PHASE_IDLE     0
 307#define ISDN_FAX_PHASE_A        1
 308#define ISDN_FAX_PHASE_B        2
 309#define ISDN_FAX_PHASE_C        3
 310#define ISDN_FAX_PHASE_D        4
 311#define ISDN_FAX_PHASE_E        5
 312
 313#endif /* TTY_FAX */
 314
 315#define ISDN_FAX_CLASS1_FAE     0
 316#define ISDN_FAX_CLASS1_FTS     1
 317#define ISDN_FAX_CLASS1_FRS     2
 318#define ISDN_FAX_CLASS1_FTM     3
 319#define ISDN_FAX_CLASS1_FRM     4
 320#define ISDN_FAX_CLASS1_FTH     5
 321#define ISDN_FAX_CLASS1_FRH     6
 322#define ISDN_FAX_CLASS1_CTRL    7
 323
 324#define ISDN_FAX_CLASS1_OK      0
 325#define ISDN_FAX_CLASS1_CONNECT 1
 326#define ISDN_FAX_CLASS1_NOCARR  2
 327#define ISDN_FAX_CLASS1_ERROR   3
 328#define ISDN_FAX_CLASS1_FCERROR 4
 329#define ISDN_FAX_CLASS1_QUERY   5
 330
 331typedef struct {
 332        __u8    cmd;
 333        __u8    subcmd;
 334        __u8    para[50];
 335} aux_s;
 336
 337#define AT_COMMAND      0
 338#define AT_EQ_VALUE     1
 339#define AT_QUERY        2
 340#define AT_EQ_QUERY     3
 341
 342/* CAPI structs */
 343
 344/* this is compatible to the old union size */
 345#define MAX_CAPI_PARA_LEN 50
 346
 347typedef struct {
 348        /* Header */
 349        __u16 Length;
 350        __u16 ApplId;
 351        __u8 Command;
 352        __u8 Subcommand;
 353        __u16 Messagenumber;
 354
 355        /* Parameter */
 356        union {
 357                __u32 Controller;
 358                __u32 PLCI;
 359                __u32 NCCI;
 360        } adr;
 361        __u8 para[MAX_CAPI_PARA_LEN];
 362} capi_msg;
 363
 364/*
 365 * Structure for exchanging above infos
 366 *
 367 */
 368typedef struct {
 369        int   driver;           /* Lowlevel-Driver-ID            */
 370        int   command;          /* Command or Status (see above) */
 371        ulong arg;              /* Additional Data               */
 372        union {
 373                ulong errcode;  /* Type of error with STAT_L1ERR        */
 374                int length;     /* Amount of bytes sent with STAT_BSENT */
 375                u_char num[50]; /* Additional Data                      */
 376                setup_parm setup;/* For SETUP msg                       */
 377                capi_msg cmsg;  /* For CAPI like messages               */
 378                char display[85];/* display message data                */ 
 379                isdn_cmd_stat isdn_io; /* ISDN IO-parameter/result      */
 380                aux_s aux;      /* for modem commands/indications       */
 381#ifdef CONFIG_ISDN_TTY_FAX
 382                T30_s   *fax;   /* Pointer to ttys fax struct           */
 383#endif
 384                ulong userdata; /* User Data */
 385        } parm;
 386} isdn_ctrl;
 387
 388#define dss1_io    isdn_io
 389#define ni1_io     isdn_io
 390
 391/*
 392 * The interface-struct itself (initialized at load-time of lowlevel-driver)
 393 *
 394 * See Documentation/isdn/INTERFACE for a description, how the communication
 395 * between the ISDN subsystem and its drivers is done.
 396 *
 397 */
 398typedef struct {
 399  struct module *owner;
 400
 401  /* Number of channels supported by this driver
 402   */
 403  int channels;
 404
 405  /* 
 406   * Maximum Size of transmit/receive-buffer this driver supports.
 407   */
 408  int maxbufsize;
 409
 410  /* Feature-Flags for this driver.
 411   * See defines ISDN_FEATURE_... for Values
 412   */
 413  unsigned long features;
 414
 415  /*
 416   * Needed for calculating
 417   * dev->hard_header_len = linklayer header + hl_hdrlen;
 418   * Drivers, not supporting sk_buff's should set this to 0.
 419   */
 420  unsigned short hl_hdrlen;
 421
 422  /*
 423   * Receive-Callback using sk_buff's
 424   * Parameters:
 425   *             int                    Driver-ID
 426   *             int                    local channel-number (0 ...)
 427   *             struct sk_buff *skb    received Data
 428   */
 429  void (*rcvcallb_skb)(int, int, struct sk_buff *);
 430
 431  /* Status-Callback
 432   * Parameters:
 433   *             isdn_ctrl*
 434   *                   driver  = Driver ID.
 435   *                   command = One of above ISDN_STAT_... constants.
 436   *                   arg     = depending on status-type.
 437   *                   num     = depending on status-type.
 438   */
 439  int (*statcallb)(isdn_ctrl*);
 440
 441  /* Send command
 442   * Parameters:
 443   *             isdn_ctrl*
 444   *                   driver  = Driver ID.
 445   *                   command = One of above ISDN_CMD_... constants.
 446   *                   arg     = depending on command.
 447   *                   num     = depending on command.
 448   */
 449  int (*command)(isdn_ctrl*);
 450
 451  /*
 452   * Send data using sk_buff's
 453   * Parameters:
 454   *             int                    driverId
 455   *             int                    local channel-number (0...)
 456   *             int                    Flag: Need ACK for this packet.
 457   *             struct sk_buff *skb    Data to send
 458   */
 459  int (*writebuf_skb) (int, int, int, struct sk_buff *);
 460
 461  /* Send raw D-Channel-Commands
 462   * Parameters:
 463   *             u_char pointer data
 464   *             int    length of data
 465   *             int    driverId
 466   *             int    local channel-number (0 ...)
 467   */
 468  int (*writecmd)(const u_char __user *, int, int, int);
 469
 470  /* Read raw Status replies
 471   *             u_char pointer data (volatile)
 472   *             int    length of buffer
 473   *             int    driverId
 474   *             int    local channel-number (0 ...)
 475   */
 476  int (*readstat)(u_char __user *, int, int, int);
 477
 478  char id[20];
 479} isdn_if;
 480
 481/*
 482 * Function which must be called by lowlevel-driver at loadtime with
 483 * the following fields of above struct set:
 484 *
 485 * channels     Number of channels that will be supported.
 486 * hl_hdrlen    Space to preserve in sk_buff's when sending. Drivers, not
 487 *              supporting sk_buff's should set this to 0.
 488 * command      Address of Command-Handler.
 489 * features     Bitwise coded Features of this driver. (use ISDN_FEATURE_...)
 490 * writebuf_skb Address of Skbuff-Send-Handler.
 491 * writecmd        "    "  D-Channel  " which accepts raw D-Ch-Commands.
 492 * readstat        "    "  D-Channel  " which delivers raw Status-Data.
 493 *
 494 * The linklevel-driver fills the following fields:
 495 *
 496 * channels      Driver-ID assigned to this driver. (Must be used on all
 497 *               subsequent callbacks.
 498 * rcvcallb_skb  Address of handler for received Skbuff's.
 499 * statcallb        "    "     "    for status-changes.
 500 *
 501 */
 502extern int register_isdn(isdn_if*);
 503#include <asm/uaccess.h>
 504
 505#endif /* __ISDNIF_H__ */
 506
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