include/linux/isdnif.h

   1 /* $Id: isdnif.h,v 1.32 1999/10/11 22:03:00 keil Exp $
   2  *
   3  * Linux ISDN subsystem
   4  *
   5  * Definition of the interface between the subsystem and its low-level drivers.
   6  *
   7  * Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de)
   8  * Copyright 1995,96    Thinking Objects Software GmbH Wuerzburg
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * $Log: isdnif.h,v $
  25  * Revision 1.32  1999/10/11 22:03:00  keil
  26  * COMPAT_NEED_UACCESS (no include in isdn_compat.h)
  27  *
  28  * Revision 1.31  1999/09/06 07:29:36  fritz
  29  * Changed my mail-address.
  30  *
  31  * Revision 1.30  1999/08/23 15:54:29  keil
  32  * more backported changes from kernel 2.3.14
  33  *
  34  * Revision 1.29  1999/07/31 13:00:02  armin
  35  * Added tty fax capabilities.
  36  *
  37  * Revision 1.28  1999/07/13 20:57:48  werner
  38  * added callback ISDN_STAT_DISCH for limiting b-channel resources.
  39  *
  40  * Revision 1.27  1999/07/11 17:07:39  armin
  41  * Added tty modem register S23.
  42  * Added new layer 2 and 3 protocols for Fax and DSP functions.
  43  *
  44  * Revision 1.26  1999/07/01 08:35:44  keil
  45  * compatibility to 2.3
  46  *
  47  * Revision 1.25  1998/06/17 19:51:55  he
  48  * merged with 2.1.10[34] (cosmetics and udelay() -> mdelay())
  49  * brute force fix to avoid Ugh's in isdn_tty_write()
  50  * cleaned up some dead code
  51  *
  52  * Revision 1.24  1998/03/19 13:18:57  keil
  53  * Start of a CAPI like interface for supplementary Service
  54  * first service: SUSPEND
  55  *
  56  * Revision 1.23  1998/02/20 17:36:52  fritz
  57  * Added L2-protocols for V.110, changed FEATURE-Flag-constants.
  58  *
  59  * Revision 1.22  1998/01/31 22:14:12  keil
  60  * changes for 2.1.82
  61  *
  62  * Revision 1.21  1997/10/09 21:28:13  fritz
  63  * New HL<->LL interface:
  64  *   New BSENT callback with nr. of bytes included.
  65  *   Sending without ACK.
  66  *   New L1 error status (not yet in use).
  67  *   Cleaned up obsolete structures.
  68  * Implemented Cisco-SLARP.
  69  * Changed local net-interface data to be dynamically allocated.
  70  * Removed old 2.0 compatibility stuff.
  71  *
  72  * Revision 1.20  1997/05/27 15:18:06  fritz
  73  * Added changes for recent 2.1.x kernels:
  74  *   changed return type of isdn_close
  75  *   queue_task_* -> queue_task
  76  *   clear/set_bit -> test_and_... where apropriate.
  77  *   changed type of hard_header_cache parameter.
  78  *
  79  * Revision 1.19  1997/03/25 23:13:56  keil
  80  * NI-1 US protocol
  81  *
  82  * Revision 1.18  1997/03/04 22:09:18  calle
  83  * Change macros copy_from_user and copy_to_user in inline function.
  84  * These are now correct replacements of the functions for 2.1.xx
  85  *
  86  * Revision 1.17  1997/02/10 21:12:53  fritz
  87  * More setup-interface changes.
  88  *
  89  * Revision 1.16  1997/02/10 19:42:57  fritz
  90  * New interface for reporting incoming calls.
  91  *
  92  * Revision 1.15  1997/02/09 00:18:42  keil
  93  * leased line support
  94  *
  95  * Revision 1.14  1997/02/03 23:43:00  fritz
  96  * Misc changes for Kernel 2.1.X compatibility.
  97  *
  98  * Revision 1.13  1996/11/13 02:39:59  fritz
  99  * More compatibility changes.
 100  *
 101  * Revision 1.12  1996/11/06 17:38:48  keil
 102  * more changes for 2.1.X
 103  *
 104  * Revision 1.11  1996/10/23 11:59:42  fritz
 105  * More compatibility changes.
 106  *
 107  * Revision 1.10  1996/10/22 23:14:19  fritz
 108  * Changes for compatibility to 2.0.X and 2.1.X kernels.
 109  *
 110  * Revision 1.9  1996/06/06 21:24:24  fritz
 111  * Started adding support for suspend/resume.
 112  *
 113  * Revision 1.8  1996/05/18 01:45:37  fritz
 114  * More spelling corrections.
 115  *
 116  * Revision 1.7  1996/05/18 01:37:19  fritz
 117  * Added spelling corrections and some minor changes
 118  * to stay in sync with kernel.
 119  *
 120  * Revision 1.6  1996/05/17 03:59:28  fritz
 121  * Marked rcvcallb and writebuf obsolete.
 122  *
 123  * Revision 1.5  1996/05/01 11:43:54  fritz
 124  * Removed STANDALONE
 125  *
 126  * Revision 1.4  1996/05/01 11:38:40  fritz
 127  * Added ISDN_FEATURE_L2_TRANS
 128  *
 129  * Revision 1.3  1996/04/29 22:57:54  fritz
 130  * Added driverId and channel parameters to
 131  * writecmd() and readstat().
 132  * Added constant for voice-support.
 133  *
 134  * Revision 1.2  1996/04/20 17:02:40  fritz
 135  * Changes to support skbuffs for Lowlevel-Drivers.
 136  * Misc. typos
 137  *
 138  * Revision 1.1  1996/01/09 05:50:51  fritz
 139  * Initial revision
 140  *
 141  */
 142
 143 #ifndef isdnif_h
 144 #define isdnif_h
 145
 146 #include <linux/config.h>
 147
 148 /*
 149  * Values for general protocol-selection
 150  */
 151 #define ISDN_PTYPE_UNKNOWN   0   /* Protocol undefined   */
 152 #define ISDN_PTYPE_1TR6      1   /* german 1TR6-protocol */
 153 #define ISDN_PTYPE_EURO      2   /* EDSS1-protocol       */
 154 #define ISDN_PTYPE_LEASED    3   /* for leased lines     */
 155 #define ISDN_PTYPE_NI1       4   /* US NI-1 protocol     */
 156 #define ISDN_PTYPE_MAX       7   /* Max. 8 Protocols     */
 157
 158 /*
 159  * Values for Layer-2-protocol-selection
 160  */
 161 #define ISDN_PROTO_L2_X75I   0   /* X75/LAPB with I-Frames            */
 162 #define ISDN_PROTO_L2_X75UI  1   /* X75/LAPB with UI-Frames           */
 163 #define ISDN_PROTO_L2_X75BUI 2   /* X75/LAPB with UI-Frames           */
 164 #define ISDN_PROTO_L2_HDLC   3   /* HDLC                              */
 165 #define ISDN_PROTO_L2_TRANS  4   /* Transparent (Voice)               */
 166 #define ISDN_PROTO_L2_X25DTE 5   /* X25/LAPB DTE mode                 */
 167 #define ISDN_PROTO_L2_X25DCE 6   /* X25/LAPB DCE mode                 */
 168 #define ISDN_PROTO_L2_V11096 7   /* V.110 bitrate adaption 9600 Baud  */
 169 #define ISDN_PROTO_L2_V11019 8   /* V.110 bitrate adaption 19200 Baud */
 170 #define ISDN_PROTO_L2_V11038 9   /* V.110 bitrate adaption 38400 Baud */
 171 #define ISDN_PROTO_L2_MODEM  10  /* Analog Modem on Board */
 172 #define ISDN_PROTO_L2_FAX    11  /* Fax Group 2/3         */
 173 #define ISDN_PROTO_L2_MAX    15  /* Max. 16 Protocols                 */
 174
 175 /*
 176  * Values for Layer-3-protocol-selection
 177  */
 178 #define ISDN_PROTO_L3_TRANS  0   /* Transparent                 */
 179 #define ISDN_PROTO_L3_TRANSDSP 1   /* Transparent with DSP    */
 180 #define ISDN_PROTO_L3_FAX    2   /* Fax Group 2/3             */
 181 #define ISDN_PROTO_L3_MAX    7   /* Max. 8 Protocols            */
 182
 183 #ifdef __KERNEL__
 184
 185 #include <linux/skbuff.h>
 186
 187 /***************************************************************************/
 188 /* Extensions made by Werner Cornelius (werner@ikt.de)                     */
 189 /*                                                                         */
 190 /* The proceed command holds a incoming call in a state to leave processes */
 191 /* enough time to check whether ist should be accepted.                    */
 192 /* The PROT_IO Command extends the interface to make protocol dependant    */
 193 /* features available (call diversion, call waiting...).                   */
 194 /*                                                                         */
 195 /* The PROT_IO Command is executed with the desired driver id and the arg  */
 196 /* parameter coded as follows:                                             */
 197 /* The lower 8 bits of arg contain the desired protocol from ISDN_PTYPE    */
 198 /* definitions. The upper 24 bits represent the protocol specific cmd/stat.*/
 199 /* Any additional data is protocol and command specific.                   */
 200 /* This mechanism also applies to the statcallb callback STAT_PROT.        */
 201 /*                                                                         */
 202 /* This suggested extension permits an easy expansion of protocol specific */
 203 /* handling. Extensions may be added at any time without changing the HL   */
 204 /* driver code and not getting conflicts without certifications.           */
 205 /* The well known CAPI 2.0 interface handles such extensions in a similar  */
 206 /* way. Perhaps a protocol specific module may be added and separately     */
 207 /* loaded and linked to the basic isdn module for handling.                */
 208 /***************************************************************************/
 209
 210 /*****************/
 211 /* DSS1 commands */
 212 /*****************/
 213 #define DSS1_CMD_INVOKE       ((0x00 << 8) | ISDN_PTYPE_EURO)   /* invoke a supplementary service */
 214 #define DSS1_CMD_INVOKE_ABORT ((0x01 << 8) | ISDN_PTYPE_EURO)   /* abort a invoke cmd */
 215
 216 /*******************************/
 217 /* DSS1 Status callback values */
 218 /*******************************/
 219 #define DSS1_STAT_INVOKE_RES  ((0x80 << 8) | ISDN_PTYPE_EURO)   /* Result for invocation */
 220 #define DSS1_STAT_INVOKE_ERR  ((0x81 << 8) | ISDN_PTYPE_EURO)   /* Error Return for invocation */
 221 #define DSS1_STAT_INVOKE_BRD  ((0x82 << 8) | ISDN_PTYPE_EURO)   /* Deliver invoke broadcast info */
 222
 223
 224 /*********************************************************************/
 225 /* structures for DSS1 commands and callback                         */
 226 /*                                                                   */
 227 /* An action is invoked by sending a DSS1_CMD_INVOKE. The ll_id, proc*/
 228 /* timeout, datalen and data fields must be set before calling.      */
 229 /*                                                                   */
 230 /* The return value is a positive hl_id value also delivered in the  */
 231 /* hl_id field. A value of zero signals no more left hl_id capacitys.*/
 232 /* A negative return value signals errors in LL. So if the return    */
 233 /* value is <= 0 no action in LL will be taken -> request ignored    */
 234 /*                                                                   */
 235 /* The timeout field must be filled with a positive value specifying */
 236 /* the amount of time the INVOKED process waits for a reaction from  */
 237 /* the network.                                                      */
 238 /* If a response (either error or result) is received during this    */
 239 /* intervall, a reporting callback is initiated and the process will */
 240 /* be deleted, the hl identifier will be freed.                      */
 241 /* If no response is received during the specified intervall, a error*/
 242 /* callback is initiated with timeout set to -1 and a datalen set    */
 243 /* to 0.                                                             */
 244 /* If timeout is set to a value <= 0 during INVOCATION the process is*/
 245 /* immediately deleted after sending the data. No callback occurs !  */
 246 /*                                                                   */
 247 /* A currently waiting process may be aborted with INVOKE_ABORT. No  */
 248 /* callback will occur when a process has been aborted.              */
 249 /*                                                                   */
 250 /* Broadcast invoke frames from the network are reported via the     */
 251 /* STAT_INVOKE_BRD callback. The ll_id is set to 0, the other fields */
 252 /* are supplied by the network and not by the HL.                    */
 253 /*********************************************************************/
 254 typedef struct
 255   { ulong ll_id; /* ID supplied by LL when executing    */
 256                  /* a command and returned by HL for    */
 257                  /* INVOKE_RES and INVOKE_ERR           */
 258     int hl_id;   /* ID supplied by HL when called       */
 259                  /* for executing a cmd and delivered   */
 260                  /* for results and errors              */
 261                  /* must be supplied by LL when aborting*/
 262     int proc;    /* invoke procedure used by CMD_INVOKE */
 263                  /* returned by callback and broadcast  */
 264     int timeout; /* timeout for INVOKE CMD in ms        */
 265                  /* -1  in stat callback when timed out */
 266                  /* error value when error callback     */
 267     int datalen; /* length of cmd or stat data          */
 268     u_char *data;/* pointer to data delivered or send   */
 269   } dss1_cmd_stat;
 270
 271 /*
 272  * Commands from linklevel to lowlevel
 273  *
 274  */
 275 #define ISDN_CMD_IOCTL    0       /* Perform ioctl                         */
 276 #define ISDN_CMD_DIAL     1       /* Dial out                              */
 277 #define ISDN_CMD_ACCEPTD  2       /* Accept an incoming call on D-Chan.    */
 278 #define ISDN_CMD_ACCEPTB  3       /* Request B-Channel connect.            */
 279 #define ISDN_CMD_HANGUP   4       /* Hangup                                */
 280 #define ISDN_CMD_CLREAZ   5       /* Clear EAZ(s) of channel               */
 281 #define ISDN_CMD_SETEAZ   6       /* Set EAZ(s) of channel                 */
 282 #define ISDN_CMD_GETEAZ   7       /* Get EAZ(s) of channel                 */
 283 #define ISDN_CMD_SETSIL   8       /* Set Service-Indicator-List of channel */
 284 #define ISDN_CMD_GETSIL   9       /* Get Service-Indicator-List of channel */
 285 #define ISDN_CMD_SETL2   10       /* Set B-Chan. Layer2-Parameter          */
 286 #define ISDN_CMD_GETL2   11       /* Get B-Chan. Layer2-Parameter          */
 287 #define ISDN_CMD_SETL3   12       /* Set B-Chan. Layer3-Parameter          */
 288 #define ISDN_CMD_GETL3   13       /* Get B-Chan. Layer3-Parameter          */
 289 #define ISDN_CMD_LOCK    14       /* Signal usage by upper levels          */
 290 #define ISDN_CMD_UNLOCK  15       /* Release usage-lock                    */
 291 #define ISDN_CMD_SUSPEND 16       /* Suspend connection                    */
 292 #define ISDN_CMD_RESUME  17       /* Resume connection                     */
 293 #define ISDN_CMD_PROCEED 18       /* Proceed with call establishment       */
 294 #define ISDN_CMD_ALERT   19       /* Alert after Proceeding                */
 295 #define ISDN_CMD_REDIR   20       /* Redir a incoming call                 */
 296 #define ISDN_CMD_PROT_IO 21       /* Protocol specific commands            */
 297 #define CAPI_PUT_MESSAGE 22       /* CAPI message send down or up          */
 298 #define ISDN_CMD_FAXCMD  23       /* FAX commands to HL-driver             */
 299 #define ISDN_CMD_AUDIO   24       /* DSP, DTMF, ... settings               */
 300
 301 /*
 302  * Status-Values delivered from lowlevel to linklevel via
 303  * statcallb().
 304  *
 305  */
 306 #define ISDN_STAT_STAVAIL 256    /* Raw status-data available             */
 307 #define ISDN_STAT_ICALL   257    /* Incoming call detected                */
 308 #define ISDN_STAT_RUN     258    /* Signal protocol-code is running       */
 309 #define ISDN_STAT_STOP    259    /* Signal halt of protocol-code          */
 310 #define ISDN_STAT_DCONN   260    /* Signal D-Channel connect              */
 311 #define ISDN_STAT_BCONN   261    /* Signal B-Channel connect              */
 312 #define ISDN_STAT_DHUP    262    /* Signal D-Channel disconnect           */
 313 #define ISDN_STAT_BHUP    263    /* Signal B-Channel disconnect           */
 314 #define ISDN_STAT_CINF    264    /* Charge-Info                           */
 315 #define ISDN_STAT_LOAD    265    /* Signal new lowlevel-driver is loaded  */
 316 #define ISDN_STAT_UNLOAD  266    /* Signal unload of lowlevel-driver      */
 317 #define ISDN_STAT_BSENT   267    /* Signal packet sent                    */
 318 #define ISDN_STAT_NODCH   268    /* Signal no D-Channel                   */
 319 #define ISDN_STAT_ADDCH   269    /* Add more Channels                     */
 320 #define ISDN_STAT_CAUSE   270    /* Cause-Message                         */
 321 #define ISDN_STAT_ICALLW  271    /* Incoming call without B-chan waiting  */
 322 #define ISDN_STAT_REDIR   272    /* Redir result                          */
 323 #define ISDN_STAT_PROT    273    /* protocol IO specific callback         */
 324 #define ISDN_STAT_DISPLAY 274    /* deliver a received display message    */
 325 #define ISDN_STAT_L1ERR   275    /* Signal Layer-1 Error                  */
 326 #define ISDN_STAT_FAXIND  276    /* FAX indications from HL-driver        */
 327 #define ISDN_STAT_AUDIO   277    /* DTMF, DSP indications                 */
 328 #define ISDN_STAT_DISCH   278    /* Disable/Enable channel usage          */
 329
 330 /*
 331  * Audio commands
 332  */
 333 #define ISDN_AUDIO_SETDD        0       /* Set DTMF detection           */
 334 #define ISDN_AUDIO_DTMF         1       /* Rx/Tx DTMF                   */
 335
 336 /*
 337  * Values for errcode field
 338  */
 339 #define ISDN_STAT_L1ERR_SEND 1
 340 #define ISDN_STAT_L1ERR_RECV 2
 341
 342 /*
 343  * Values for feature-field of interface-struct.
 344  */
 345 /* Layer 2 */
 346 #define ISDN_FEATURE_L2_X75I    (0x0001 << ISDN_PROTO_L2_X75I)
 347 #define ISDN_FEATURE_L2_X75UI   (0x0001 << ISDN_PROTO_L2_X75UI)
 348 #define ISDN_FEATURE_L2_X75BUI  (0x0001 << ISDN_PROTO_L2_X75BUI)
 349 #define ISDN_FEATURE_L2_HDLC    (0x0001 << ISDN_PROTO_L2_HDLC)
 350 #define ISDN_FEATURE_L2_TRANS   (0x0001 << ISDN_PROTO_L2_TRANS)
 351 #define ISDN_FEATURE_L2_X25DTE  (0x0001 << ISDN_PROTO_L2_X25DTE)
 352 #define ISDN_FEATURE_L2_X25DCE  (0x0001 << ISDN_PROTO_L2_X25DCE)
 353 #define ISDN_FEATURE_L2_V11096  (0x0001 << ISDN_PROTO_L2_V11096)
 354 #define ISDN_FEATURE_L2_V11019  (0x0001 << ISDN_PROTO_L2_V11019)
 355 #define ISDN_FEATURE_L2_V11038  (0x0001 << ISDN_PROTO_L2_V11038)
 356 #define ISDN_FEATURE_L2_MODEM   (0x0001 << ISDN_PROTO_L2_MODEM)
 357 #define ISDN_FEATURE_L2_FAX     (0x0001 << ISDN_PROTO_L2_FAX)
 358
 359 #define ISDN_FEATURE_L2_MASK    (0x0FFFF) /* Max. 16 protocols */
 360 #define ISDN_FEATURE_L2_SHIFT   (0)
 361
 362 /* Layer 3 */
 363 #define ISDN_FEATURE_L3_TRANS   (0x10000 << ISDN_PROTO_L3_TRANS)
 364 #define ISDN_FEATURE_L3_TRANSDSP (0x10000 << ISDN_PROTO_L3_TRANSDSP)
 365 #define ISDN_FEATURE_L3_FAX     (0x10000 << ISDN_PROTO_L3_FAX)
 366
 367 #define ISDN_FEATURE_L3_MASK    (0x0FF0000) /* Max. 8 Protocols */
 368 #define ISDN_FEATURE_L3_SHIFT   (16)
 369
 370 /* Signaling */
 371 #define ISDN_FEATURE_P_UNKNOWN  (0x1000000 << ISDN_PTYPE_UNKNOWN)
 372 #define ISDN_FEATURE_P_1TR6     (0x1000000 << ISDN_PTYPE_1TR6)
 373 #define ISDN_FEATURE_P_EURO     (0x1000000 << ISDN_PTYPE_EURO)
 374 #define ISDN_FEATURE_P_NI1      (0x1000000 << ISDN_PTYPE_NI1)
 375
 376 #define ISDN_FEATURE_P_MASK     (0x0FF000000) /* Max. 8 Protocols */
 377 #define ISDN_FEATURE_P_SHIFT    (24)
 378
 379 typedef struct setup_parm {
 380     unsigned char phone[32];    /* Remote Phone-Number */
 381     unsigned char eazmsn[32];   /* Local EAZ or MSN    */
 382     unsigned char si1;      /* Service Indicator 1 */
 383     unsigned char si2;      /* Service Indicator 2 */
 384     unsigned char plan;     /* Numbering plan      */
 385     unsigned char screen;   /* Screening info      */
 386 } setup_parm;
 387
 388
 389 #ifdef CONFIG_ISDN_TTY_FAX
 390 /* T.30 Fax G3 */
 391
 392 #define FAXIDLEN 21
 393
 394 typedef struct T30_s {
 395         /* session parameters */
 396         __u8 resolution         __attribute__ ((packed));
 397         __u8 rate               __attribute__ ((packed));
 398         __u8 width              __attribute__ ((packed));
 399         __u8 length             __attribute__ ((packed));
 400         __u8 compression        __attribute__ ((packed));
 401         __u8 ecm                __attribute__ ((packed));
 402         __u8 binary             __attribute__ ((packed));
 403         __u8 scantime           __attribute__ ((packed));
 404         __u8 id[FAXIDLEN]       __attribute__ ((packed));
 405         /* additional parameters */
 406         __u8 phase              __attribute__ ((packed));
 407         __u8 direction          __attribute__ ((packed));
 408         __u8 code               __attribute__ ((packed));
 409         __u8 badlin             __attribute__ ((packed));
 410         __u8 badmul             __attribute__ ((packed));
 411         __u8 bor                __attribute__ ((packed));
 412         __u8 fet                __attribute__ ((packed));
 413         __u8 pollid[FAXIDLEN]   __attribute__ ((packed));
 414         __u8 cq                 __attribute__ ((packed));
 415         __u8 cr                 __attribute__ ((packed));
 416         __u8 ctcrty             __attribute__ ((packed));
 417         __u8 minsp              __attribute__ ((packed));
 418         __u8 phcto              __attribute__ ((packed));
 419         __u8 rel                __attribute__ ((packed));
 420         __u8 nbc                __attribute__ ((packed));
 421         /* remote station parameters */
 422         __u8 r_resolution       __attribute__ ((packed));
 423         __u8 r_rate             __attribute__ ((packed));
 424         __u8 r_width            __attribute__ ((packed));
 425         __u8 r_length           __attribute__ ((packed));
 426         __u8 r_compression      __attribute__ ((packed));
 427         __u8 r_ecm              __attribute__ ((packed));
 428         __u8 r_binary           __attribute__ ((packed));
 429         __u8 r_scantime         __attribute__ ((packed));
 430         __u8 r_id[FAXIDLEN]     __attribute__ ((packed));
 431         __u8 r_code             __attribute__ ((packed));
 432 } T30_s;
 433
 434 #define ISDN_TTY_FAX_CONN_IN    0
 435 #define ISDN_TTY_FAX_CONN_OUT   1
 436
 437 #define ISDN_TTY_FAX_FCON       0
 438 #define ISDN_TTY_FAX_DIS        1
 439 #define ISDN_TTY_FAX_FTT        2
 440 #define ISDN_TTY_FAX_MCF        3
 441 #define ISDN_TTY_FAX_DCS        4
 442 #define ISDN_TTY_FAX_TRAIN_OK   5
 443 #define ISDN_TTY_FAX_EOP        6
 444 #define ISDN_TTY_FAX_EOM        7
 445 #define ISDN_TTY_FAX_MPS        8
 446 #define ISDN_TTY_FAX_DTC        9
 447 #define ISDN_TTY_FAX_RID        10
 448 #define ISDN_TTY_FAX_HNG        11
 449 #define ISDN_TTY_FAX_DT         12
 450 #define ISDN_TTY_FAX_FCON_I     13
 451 #define ISDN_TTY_FAX_DR         14
 452 #define ISDN_TTY_FAX_ET         15
 453 #define ISDN_TTY_FAX_CFR        16
 454 #define ISDN_TTY_FAX_PTS        17
 455 #define ISDN_TTY_FAX_SENT       18
 456
 457 #define ISDN_FAX_PHASE_IDLE     0
 458 #define ISDN_FAX_PHASE_A        1
 459 #define ISDN_FAX_PHASE_B        2
 460 #define ISDN_FAX_PHASE_C        3
 461 #define ISDN_FAX_PHASE_D        4
 462 #define ISDN_FAX_PHASE_E        5
 463
 464 #endif /* TTY_FAX */
 465
 466 /* CAPI structs */
 467
 468 /* this is compatible to the old union size */
 469 #define MAX_CAPI_PARA_LEN 50
 470
 471 typedef struct {
 472         /* Header */
 473         __u16 Length;
 474         __u16 ApplId;
 475         __u8 Command;
 476         __u8 Subcommand;
 477         __u16 Messagenumber;
 478
 479         /* Parameter */
 480         union {
 481                 __u32 Controller;
 482                 __u32 PLCI;
 483                 __u32 NCCI;
 484         } adr;
 485         __u8 para[MAX_CAPI_PARA_LEN];
 486 } capi_msg;
 487
 488 /*
 489  * Structure for exchanging above infos
 490  *
 491  */
 492 typedef struct {
 493         int   driver;           /* Lowlevel-Driver-ID            */
 494         int   command;          /* Command or Status (see above) */
 495         ulong arg;              /* Additional Data               */
 496         union {
 497                 ulong errcode;  /* Type of error with STAT_L1ERR         */
 498                 int length;     /* Amount of bytes sent with STAT_BSENT  */
 499                 u_char num[50];/* Additional Data                       */
 500                 setup_parm setup;/* For SETUP msg                       */
 501                 capi_msg cmsg;  /* For CAPI like messages               */
 502                 char display[85];/* display message data          */
 503                 dss1_cmd_stat dss1_io; /* DSS1 IO-parameter/result */
 504 #ifdef CONFIG_ISDN_TTY_FAX
 505                 T30_s   *fax;   /* Pointer to ttys fax struct           */
 506 #endif
 507         } parm;
 508 } isdn_ctrl;
 509
 510 /*
 511  * The interface-struct itself (initialized at load-time of lowlevel-driver)
 512  *
 513  * See Documentation/isdn/INTERFACE for a description, how the communication
 514  * between the ISDN subsystem and its drivers is done.
 515  *
 516  */
 517 typedef struct {
 518   /* Number of channels supported by this driver
 519    */
 520   int channels;
 521
 522   /*
 523    * Maximum Size of transmit/receive-buffer this driver supports.
 524    */
 525   int maxbufsize;
 526
 527   /* Feature-Flags for this driver.
 528    * See defines ISDN_FEATURE_... for Values
 529    */
 530   unsigned long features;
 531
 532   /*
 533    * Needed for calculating
 534    * dev->hard_header_len = linklayer header + hl_hdrlen;
 535    * Drivers, not supporting sk_buff's should set this to 0.
 536    */
 537   unsigned short hl_hdrlen;
 538
 539   /*
 540    * Receive-Callback using sk_buff's
 541    * Parameters:
 542    *             int                    Driver-ID
 543    *             int                    local channel-number (0 ...)
 544    *             struct sk_buff *skb    received Data
 545    */
 546   void (*rcvcallb_skb)(int, int, struct sk_buff *);
 547
 548   /* Status-Callback
 549    * Parameters:
 550    *             isdn_ctrl*
 551    *                   driver  = Driver ID.
 552    *                   command = One of above ISDN_STAT_... constants.
 553    *                   arg     = depending on status-type.
 554    *                   num     = depending on status-type.
 555    */
 556   int (*statcallb)(isdn_ctrl*);
 557
 558   /* Send command
 559    * Parameters:
 560    *             isdn_ctrl*
 561    *                   driver  = Driver ID.
 562    *                   command = One of above ISDN_CMD_... constants.
 563    *                   arg     = depending on command.
 564    *                   num     = depending on command.
 565    */
 566   int (*command)(isdn_ctrl*);
 567
 568   /*
 569    * Send data using sk_buff's
 570    * Parameters:
 571    *             int                    driverId
 572    *             int                    local channel-number (0...)
 573    *             int                    Flag: Need ACK for this packet.
 574    *             struct sk_buff *skb    Data to send
 575    */
 576   int (*writebuf_skb) (int, int, int, struct sk_buff *);
 577
 578   /* Send raw D-Channel-Commands
 579    * Parameters:
 580    *             u_char pointer data
 581    *             int    length of data
 582    *             int    Flag: 0 = Call form Kernel-Space (use memcpy,
 583    *                              no schedule allowed)
 584    *                          1 = Data is in User-Space (use memcpy_fromfs,
 585    *                              may schedule)
 586    *             int    driverId
 587    *             int    local channel-number (0 ...)
 588    */
 589   int (*writecmd)(const u_char*, int, int, int, int);
 590
 591   /* Read raw Status replies
 592    *             u_char pointer data (volatile)
 593    *             int    length of buffer
 594    *             int    Flag: 0 = Call form Kernel-Space (use memcpy,
 595    *                              no schedule allowed)
 596    *                          1 = Data is in User-Space (use memcpy_fromfs,
 597    *                              may schedule)
 598    *             int    driverId
 599    *             int    local channel-number (0 ...)
 600    */
 601   int (*readstat)(u_char*, int, int, int, int);
 602
 603   char id[20];
 604 } isdn_if;
 605
 606 /*
 607  * Function which must be called by lowlevel-driver at loadtime with
 608  * the following fields of above struct set:
 609  *
 610  * channels     Number of channels that will be supported.
 611  * hl_hdrlen    Space to preserve in sk_buff's when sending. Drivers, not
 612  *              supporting sk_buff's should set this to 0.
 613  * command      Address of Command-Handler.
 614  * features     Bitwise coded Features of this driver. (use ISDN_FEATURE_...)
 615  * writebuf_skb Address of Skbuff-Send-Handler.
 616  * writecmd        "    "  D-Channel  " which accepts raw D-Ch-Commands.
 617  * readstat        "    "  D-Channel  " which delivers raw Status-Data.
 618  *
 619  * The linklevel-driver fills the following fields:
 620  *
 621  * channels      Driver-ID assigned to this driver. (Must be used on all
 622  *               subsequent callbacks.
 623  * rcvcallb_skb  Address of handler for received Skbuff's.
 624  * statcallb        "    "     "    for status-changes.
 625  *
 626  */
 627 extern int register_isdn(isdn_if*);
 628 #include <asm/uaccess.h>
 629
 630 #endif /* __KERNEL__ */
 631 #endif /* isdnif_h */