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TOMOYO Linux Cross Reference
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 
101 typedef 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 
228 typedef 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 
243 typedef 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 
331 typedef 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 
347 typedef 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  */
368 typedef 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  */
398 typedef 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  */
502 extern int register_isdn(isdn_if*);
503 #include <linux/uaccess.h>
504 
505 #endif /* __ISDNIF_H__ */
506 

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