2 * Stuff used by all variants of the driver
4 * Copyright (c) 2001 by Stefan Eilers,
5 * Hansjoerg Lipp <hjlipp@web.de>,
6 * Tilman Schmidt <tilman@imap.cc>.
8 * =====================================================================
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 * =====================================================================
18 /* ========================================================== */
19 /* bit masks for pending commands */
25 #define PC_SHUTDOWN 0x020
26 #define PC_ACCEPT 0x040
28 #define PC_NOCID 0x100
29 #define PC_CIDMODE 0x200
30 #define PC_UMMODE 0x400
32 /* types of modem responses */
40 /* Possible ASCII responses */
48 /* responses with values to store in at_state */
51 #define RSP_ZSAU (RSP_VAR + VAR_ZSAU)
52 #define RSP_ZDLE (RSP_VAR + VAR_ZDLE)
53 #define RSP_ZCTP (RSP_VAR + VAR_ZCTP)
55 #define RSP_STR (RSP_VAR + VAR_NUM)
56 #define RSP_NMBR (RSP_STR + STR_NMBR)
57 #define RSP_ZCPN (RSP_STR + STR_ZCPN)
58 #define RSP_ZCON (RSP_STR + STR_ZCON)
59 #define RSP_ZBC (RSP_STR + STR_ZBC)
60 #define RSP_ZHLC (RSP_STR + STR_ZHLC)
62 #define RSP_WRONG_CID -2 /* unknown cid in cmd */
63 #define RSP_INVAL -6 /* invalid response */
64 #define RSP_NODEV -9 /* device not connected */
67 #define RSP_STRING -20
73 /* actions for process_response */
77 #define ACT_FAILINIT 3
78 #define ACT_HUPMODEM 4
79 #define ACT_CONFIGMODE 5
83 #define ACT_FAILDLE0 9
84 #define ACT_FAILDLE1 10
87 #define ACT_FAILCID 13
89 #define ACT_FAILSDOWN 15
92 #define ACT_DIALING 18
93 #define ACT_ABORTDIAL 19
94 #define ACT_DISCONNECT 20
95 #define ACT_CONNECT 21
96 #define ACT_REMOTEREJECT 22
97 #define ACT_CONNTIMEOUT 23
98 #define ACT_REMOTEHUP 24
99 #define ACT_ABORTHUP 25
101 #define ACT_ACCEPTED 27
102 #define ACT_ABORTACCEPT 28
103 #define ACT_TIMEOUT 29
104 #define ACT_GETSTRING 30
105 #define ACT_SETVER 31
106 #define ACT_FAILVER 32
107 #define ACT_GOTVER 33
110 #define ACT_ABORTCID 36
112 #define ACT_NOTIFY_BC_DOWN 38
113 #define ACT_NOTIFY_BC_UP 39
115 #define ACT_ACCEPT 41
117 #define ACT_IF_LOCK 44
120 #define ACT_FAKEDLE0 47
121 #define ACT_FAKEHUP 48
122 #define ACT_FAKESDOWN 49
123 #define ACT_SHUTDOWN 50
124 #define ACT_PROC_CIDMODE 51
125 #define ACT_UMODESET 52
126 #define ACT_FAILUMODE 53
127 #define ACT_CMODESET 54
128 #define ACT_FAILCMODE 55
129 #define ACT_IF_VER 56
132 /* at command sequences */
138 #define SEQ_NOCID 350
141 #define SEQ_ACCEPT 720
142 #define SEQ_SHUTDOWN 500
143 #define SEQ_CIDMODE 10
144 #define SEQ_UMMODE 11
147 /* 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid),
148 * 400: hup, 500: reset, 600: dial, 700: ring */
149 struct reply_t gigaset_tab_nocid
[] =
151 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout,
154 /* initialize device, set cid mode if possible */
155 {RSP_INIT
, -1, -1, SEQ_INIT
, 100, 1, {ACT_TIMEOUT
} },
157 {EV_TIMEOUT
, 100, 100, -1, 101, 3, {0}, "Z\r"},
158 {RSP_OK
, 101, 103, -1, 120, 5, {ACT_GETSTRING
},
161 {EV_TIMEOUT
, 101, 101, -1, 102, 5, {0}, "Z\r"},
162 {RSP_ERROR
, 101, 101, -1, 102, 5, {0}, "Z\r"},
164 {EV_TIMEOUT
, 102, 102, -1, 108, 5, {ACT_SETDLE1
},
166 {RSP_OK
, 108, 108, -1, 104, -1},
167 {RSP_ZDLE
, 104, 104, 0, 103, 5, {0}, "Z\r"},
168 {EV_TIMEOUT
, 104, 104, -1, 0, 0, {ACT_FAILINIT
} },
169 {RSP_ERROR
, 108, 108, -1, 0, 0, {ACT_FAILINIT
} },
171 {EV_TIMEOUT
, 108, 108, -1, 105, 2, {ACT_SETDLE0
,
174 {EV_TIMEOUT
, 105, 105, -1, 103, 5, {0}, "Z\r"},
176 {RSP_ERROR
, 102, 102, -1, 107, 5, {0}, "^GETPRE\r"},
177 {RSP_OK
, 107, 107, -1, 0, 0, {ACT_CONFIGMODE
} },
178 {RSP_ERROR
, 107, 107, -1, 0, 0, {ACT_FAILINIT
} },
179 {EV_TIMEOUT
, 107, 107, -1, 0, 0, {ACT_FAILINIT
} },
181 {RSP_ERROR
, 103, 103, -1, 0, 0, {ACT_FAILINIT
} },
182 {EV_TIMEOUT
, 103, 103, -1, 0, 0, {ACT_FAILINIT
} },
184 {RSP_STRING
, 120, 120, -1, 121, -1, {ACT_SETVER
} },
186 {EV_TIMEOUT
, 120, 121, -1, 0, 0, {ACT_FAILVER
,
188 {RSP_ERROR
, 120, 121, -1, 0, 0, {ACT_FAILVER
,
190 {RSP_OK
, 121, 121, -1, 0, 0, {ACT_GOTVER
,
194 {RSP_INIT
, 0, 0, SEQ_DLE0
, 201, 5, {0}, "^SDLE=0\r"},
195 {RSP_OK
, 201, 201, -1, 202, -1},
196 {RSP_ZDLE
, 202, 202, 0, 0, 0, {ACT_DLE0
} },
197 {RSP_NODEV
, 200, 249, -1, 0, 0, {ACT_FAKEDLE0
} },
198 {RSP_ERROR
, 200, 249, -1, 0, 0, {ACT_FAILDLE0
} },
199 {EV_TIMEOUT
, 200, 249, -1, 0, 0, {ACT_FAILDLE0
} },
202 {RSP_INIT
, 0, 0, SEQ_DLE1
, 251, 5, {0}, "^SDLE=1\r"},
203 {RSP_OK
, 251, 251, -1, 252, -1},
204 {RSP_ZDLE
, 252, 252, 1, 0, 0, {ACT_DLE1
} },
205 {RSP_ERROR
, 250, 299, -1, 0, 0, {ACT_FAILDLE1
} },
206 {EV_TIMEOUT
, 250, 299, -1, 0, 0, {ACT_FAILDLE1
} },
209 {RSP_RING
, -1, -1, -1, -1, -1, {ACT_RING
} },
212 {RSP_INIT
, 0, 0, SEQ_CID
, 301, 5, {0}, "^SGCI?\r"},
213 {RSP_OK
, 301, 301, -1, 302, -1},
214 {RSP_ZGCI
, 302, 302, -1, 0, 0, {ACT_CID
} },
215 {RSP_ERROR
, 301, 349, -1, 0, 0, {ACT_FAILCID
} },
216 {EV_TIMEOUT
, 301, 349, -1, 0, 0, {ACT_FAILCID
} },
219 {RSP_INIT
, 0, 0, SEQ_CIDMODE
, 150, 5, {0}, "^SGCI=1\r"},
220 {RSP_OK
, 150, 150, -1, 0, 0, {ACT_CMODESET
} },
221 {RSP_ERROR
, 150, 150, -1, 0, 0, {ACT_FAILCMODE
} },
222 {EV_TIMEOUT
, 150, 150, -1, 0, 0, {ACT_FAILCMODE
} },
225 {RSP_INIT
, 0, 0, SEQ_UMMODE
, 160, 5, {0}, "Z\r"},
226 {RSP_OK
, 160, 160, -1, 0, 0, {ACT_UMODESET
} },
227 {RSP_ERROR
, 160, 160, -1, 0, 0, {ACT_FAILUMODE
} },
228 {EV_TIMEOUT
, 160, 160, -1, 0, 0, {ACT_FAILUMODE
} },
230 /* abort getting cid */
231 {RSP_INIT
, 0, 0, SEQ_NOCID
, 0, 0, {ACT_ABORTCID
} },
234 {RSP_INIT
, 0, 0, SEQ_SHUTDOWN
, 504, 5, {0}, "Z\r"},
235 {RSP_OK
, 504, 504, -1, 0, 0, {ACT_SDOWN
} },
236 {RSP_ERROR
, 501, 599, -1, 0, 0, {ACT_FAILSDOWN
} },
237 {EV_TIMEOUT
, 501, 599, -1, 0, 0, {ACT_FAILSDOWN
} },
238 {RSP_NODEV
, 501, 599, -1, 0, 0, {ACT_FAKESDOWN
} },
240 {EV_PROC_CIDMODE
, -1, -1, -1, -1, -1, {ACT_PROC_CIDMODE
} },
241 {EV_IF_LOCK
, -1, -1, -1, -1, -1, {ACT_IF_LOCK
} },
242 {EV_IF_VER
, -1, -1, -1, -1, -1, {ACT_IF_VER
} },
243 {EV_START
, -1, -1, -1, -1, -1, {ACT_START
} },
244 {EV_STOP
, -1, -1, -1, -1, -1, {ACT_STOP
} },
245 {EV_SHUTDOWN
, -1, -1, -1, -1, -1, {ACT_SHUTDOWN
} },
248 {RSP_ERROR
, -1, -1, -1, -1, -1, {ACT_ERROR
} },
249 {RSP_ZCAU
, -1, -1, -1, -1, -1, {ACT_ZCAU
} },
250 {RSP_NONE
, -1, -1, -1, -1, -1, {ACT_DEBUG
} },
251 {RSP_ANY
, -1, -1, -1, -1, -1, {ACT_WARN
} },
255 /* 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring,
256 * 400: hup, 750: accepted icall */
257 struct reply_t gigaset_tab_cid
[] =
259 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout,
263 {EV_DIAL
, -1, -1, -1, -1, -1, {ACT_DIAL
} },
264 {RSP_INIT
, 0, 0, SEQ_DIAL
, 601, 5, {ACT_CMD
+AT_BC
} },
265 {RSP_OK
, 601, 601, -1, 603, 5, {ACT_CMD
+AT_PROTO
} },
266 {RSP_OK
, 603, 603, -1, 604, 5, {ACT_CMD
+AT_TYPE
} },
267 {RSP_OK
, 604, 604, -1, 605, 5, {ACT_CMD
+AT_MSN
} },
268 {RSP_NULL
, 605, 605, -1, 606, 5, {ACT_CMD
+AT_CLIP
} },
269 {RSP_OK
, 605, 605, -1, 606, 5, {ACT_CMD
+AT_CLIP
} },
270 {RSP_NULL
, 606, 606, -1, 607, 5, {ACT_CMD
+AT_ISO
} },
271 {RSP_OK
, 606, 606, -1, 607, 5, {ACT_CMD
+AT_ISO
} },
272 {RSP_OK
, 607, 607, -1, 608, 5, {0}, "+VLS=17\r"},
273 {RSP_OK
, 608, 608, -1, 609, -1},
274 {RSP_ZSAU
, 609, 609, ZSAU_PROCEEDING
, 610, 5, {ACT_CMD
+AT_DIAL
} },
275 {RSP_OK
, 610, 610, -1, 650, 0, {ACT_DIALING
} },
277 {RSP_ERROR
, 601, 610, -1, 0, 0, {ACT_ABORTDIAL
} },
278 {EV_TIMEOUT
, 601, 610, -1, 0, 0, {ACT_ABORTDIAL
} },
280 /* optional dialing responses */
281 {EV_BC_OPEN
, 650, 650, -1, 651, -1},
282 {RSP_ZVLS
, 609, 651, 17, -1, -1, {ACT_DEBUG
} },
283 {RSP_ZCTP
, 610, 651, -1, -1, -1, {ACT_DEBUG
} },
284 {RSP_ZCPN
, 610, 651, -1, -1, -1, {ACT_DEBUG
} },
285 {RSP_ZSAU
, 650, 651, ZSAU_CALL_DELIVERED
, -1, -1, {ACT_DEBUG
} },
288 {RSP_ZSAU
, 650, 650, ZSAU_ACTIVE
, 800, -1, {ACT_CONNECT
} },
289 {RSP_ZSAU
, 651, 651, ZSAU_ACTIVE
, 800, -1, {ACT_CONNECT
,
291 {RSP_ZSAU
, 750, 750, ZSAU_ACTIVE
, 800, -1, {ACT_CONNECT
} },
292 {RSP_ZSAU
, 751, 751, ZSAU_ACTIVE
, 800, -1, {ACT_CONNECT
,
294 {EV_BC_OPEN
, 800, 800, -1, 800, -1, {ACT_NOTIFY_BC_UP
} },
297 {RSP_ZSAU
, 650, 651, ZSAU_DISCONNECT_IND
, 0, 0, {ACT_REMOTEREJECT
} },
298 {RSP_ZSAU
, 750, 751, ZSAU_DISCONNECT_IND
, 0, 0, {ACT_REMOTEHUP
} },
299 {RSP_ZSAU
, 800, 800, ZSAU_DISCONNECT_IND
, 0, 0, {ACT_REMOTEHUP
} },
302 {EV_HUP
, -1, -1, -1, -1, -1, {ACT_HUP
} },
303 {RSP_INIT
, -1, -1, SEQ_HUP
, 401, 5, {0}, "+VLS=0\r"},
304 {RSP_OK
, 401, 401, -1, 402, 5},
305 {RSP_ZVLS
, 402, 402, 0, 403, 5},
306 {RSP_ZSAU
, 403, 403, ZSAU_DISCONNECT_REQ
, -1, -1, {ACT_DEBUG
} },
307 {RSP_ZSAU
, 403, 403, ZSAU_NULL
, 0, 0, {ACT_DISCONNECT
} },
308 {RSP_NODEV
, 401, 403, -1, 0, 0, {ACT_FAKEHUP
} },
309 {RSP_ERROR
, 401, 401, -1, 0, 0, {ACT_ABORTHUP
} },
310 {EV_TIMEOUT
, 401, 403, -1, 0, 0, {ACT_ABORTHUP
} },
312 {EV_BC_CLOSED
, 0, 0, -1, 0, -1, {ACT_NOTIFY_BC_DOWN
} },
315 {RSP_ZBC
, 700, 700, -1, -1, -1, {0} },
316 {RSP_ZHLC
, 700, 700, -1, -1, -1, {0} },
317 {RSP_NMBR
, 700, 700, -1, -1, -1, {0} },
318 {RSP_ZCPN
, 700, 700, -1, -1, -1, {0} },
319 {RSP_ZCTP
, 700, 700, -1, -1, -1, {0} },
320 {EV_TIMEOUT
, 700, 700, -1, 720, 720, {ACT_ICALL
} },
321 {EV_BC_CLOSED
, 720, 720, -1, 0, -1, {ACT_NOTIFY_BC_DOWN
} },
324 {EV_ACCEPT
, -1, -1, -1, -1, -1, {ACT_ACCEPT
} },
325 {RSP_INIT
, 720, 720, SEQ_ACCEPT
, 721, 5, {ACT_CMD
+AT_PROTO
} },
326 {RSP_OK
, 721, 721, -1, 722, 5, {ACT_CMD
+AT_ISO
} },
327 {RSP_OK
, 722, 722, -1, 723, 5, {0}, "+VLS=17\r"},
328 {RSP_OK
, 723, 723, -1, 724, 5, {0} },
329 {RSP_ZVLS
, 724, 724, 17, 750, 50, {ACT_ACCEPTED
} },
330 {RSP_ERROR
, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT
} },
331 {EV_TIMEOUT
, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT
} },
332 {RSP_ZSAU
, 700, 729, ZSAU_NULL
, 0, 0, {ACT_ABORTACCEPT
} },
333 {RSP_ZSAU
, 700, 729, ZSAU_ACTIVE
, 0, 0, {ACT_ABORTACCEPT
} },
334 {RSP_ZSAU
, 700, 729, ZSAU_DISCONNECT_IND
, 0, 0, {ACT_ABORTACCEPT
} },
336 {EV_BC_OPEN
, 750, 750, -1, 751, -1},
337 {EV_TIMEOUT
, 750, 751, -1, 0, 0, {ACT_CONNTIMEOUT
} },
339 /* B channel closed (general case) */
340 {EV_BC_CLOSED
, -1, -1, -1, -1, -1, {ACT_NOTIFY_BC_DOWN
} },
343 {RSP_ZCON
, -1, -1, -1, -1, -1, {ACT_DEBUG
} },
344 {RSP_ZCAU
, -1, -1, -1, -1, -1, {ACT_ZCAU
} },
345 {RSP_NONE
, -1, -1, -1, -1, -1, {ACT_DEBUG
} },
346 {RSP_ANY
, -1, -1, -1, -1, -1, {ACT_WARN
} },
351 static const struct resp_type_t
{
352 unsigned char *response
;
357 {"OK", RSP_OK
, RT_NOTHING
},
358 {"ERROR", RSP_ERROR
, RT_NOTHING
},
359 {"ZSAU", RSP_ZSAU
, RT_ZSAU
},
360 {"ZCAU", RSP_ZCAU
, RT_ZCAU
},
361 {"RING", RSP_RING
, RT_RING
},
362 {"ZGCI", RSP_ZGCI
, RT_NUMBER
},
363 {"ZVLS", RSP_ZVLS
, RT_NUMBER
},
364 {"ZCTP", RSP_ZCTP
, RT_NUMBER
},
365 {"ZDLE", RSP_ZDLE
, RT_NUMBER
},
366 {"ZHLC", RSP_ZHLC
, RT_STRING
},
367 {"ZBC", RSP_ZBC
, RT_STRING
},
368 {"NMBR", RSP_NMBR
, RT_STRING
},
369 {"ZCPN", RSP_ZCPN
, RT_STRING
},
370 {"ZCON", RSP_ZCON
, RT_STRING
},
374 static const struct zsau_resp_t
{
379 {"OUTGOING_CALL_PROCEEDING", ZSAU_OUTGOING_CALL_PROCEEDING
},
380 {"CALL_DELIVERED", ZSAU_CALL_DELIVERED
},
381 {"ACTIVE", ZSAU_ACTIVE
},
382 {"DISCONNECT_IND", ZSAU_DISCONNECT_IND
},
384 {"DISCONNECT_REQ", ZSAU_DISCONNECT_REQ
},
388 /* retrieve CID from parsed response
389 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
391 static int cid_of_response(char *s
)
397 return 0; /* no CID separator */
398 rc
= strict_strtoul(s
, 10, &cid
);
400 return 0; /* CID not numeric */
401 if (cid
< 1 || cid
> 65535)
402 return -1; /* CID out of range */
407 * gigaset_handle_modem_response() - process received modem response
408 * @cs: device descriptor structure.
410 * Called by asyncdata/isocdata if a block of data received from the
411 * device must be processed as a modem command response. The data is
412 * already in the cs structure.
414 void gigaset_handle_modem_response(struct cardstate
*cs
)
416 unsigned char *argv
[MAX_REC_PARAMS
+ 1];
419 const struct resp_type_t
*rt
;
420 const struct zsau_resp_t
*zr
;
423 unsigned next
, tail
, head
;
424 struct event_t
*event
;
434 /* ignore additional LFs/CRs (M10x config mode or cx100) */
435 gig_dbg(DEBUG_MCMD
, "skipped EOL [%02X]", cs
->respdata
[len
]);
438 cs
->respdata
[len
] = 0;
439 argv
[0] = cs
->respdata
;
441 if (cs
->at_state
.getstring
) {
442 /* getstring only allowed without cid at the moment */
443 cs
->at_state
.getstring
= 0;
448 for (i
= 0; i
< len
; i
++)
449 switch (cs
->respdata
[i
]) {
453 if (params
> MAX_REC_PARAMS
) {
455 "too many parameters in response\n");
456 /* need last parameter (might be CID) */
459 argv
[params
++] = cs
->respdata
+ i
+ 1;
463 cid
= params
> 1 ? cid_of_response(argv
[params
-1]) : 0;
465 gigaset_add_event(cs
, &cs
->at_state
, RSP_INVAL
,
470 for (j
= 1; j
< params
; ++j
)
473 gig_dbg(DEBUG_EVENT
, "CMD received: %s", argv
[0]);
476 gig_dbg(DEBUG_EVENT
, "CID: %s", argv
[params
]);
478 gig_dbg(DEBUG_EVENT
, "available params: %d", params
- 1);
479 for (j
= 1; j
< params
; j
++)
480 gig_dbg(DEBUG_EVENT
, "param %d: %s", j
, argv
[j
]);
483 spin_lock_irqsave(&cs
->ev_lock
, flags
);
489 while (curarg
< params
) {
490 next
= (tail
+ 1) % MAX_EVENTS
;
491 if (unlikely(next
== head
)) {
492 dev_err(cs
->dev
, "event queue full\n");
496 event
= cs
->events
+ tail
;
497 event
->at_state
= NULL
;
504 resp_code
= RSP_STRING
;
505 param_type
= RT_STRING
;
507 for (rt
= resp_type
; rt
->response
; ++rt
)
508 if (!strcmp(argv
[curarg
], rt
->response
))
512 event
->type
= RSP_NONE
;
514 "unknown modem response: '%s'\n",
519 resp_code
= rt
->resp_code
;
520 param_type
= rt
->type
;
524 event
->type
= resp_code
;
526 switch (param_type
) {
532 "received RING without CID!\n");
533 event
->type
= RSP_INVAL
;
537 event
->parameter
= cid
;
542 if (curarg
>= params
) {
543 event
->parameter
= ZSAU_NONE
;
546 for (zr
= zsau_resp
; zr
->str
; ++zr
)
547 if (!strcmp(argv
[curarg
], zr
->str
))
549 event
->parameter
= zr
->code
;
552 "%s: unknown parameter %s after ZSAU\n",
553 __func__
, argv
[curarg
]);
557 if (curarg
< params
) {
558 event
->ptr
= kstrdup(argv
[curarg
], GFP_ATOMIC
);
560 dev_err(cs
->dev
, "out of memory\n");
563 gig_dbg(DEBUG_EVENT
, "string==%s",
564 event
->ptr
? (char *) event
->ptr
: "NULL");
567 event
->parameter
= -1;
568 if (curarg
+ 1 < params
) {
569 unsigned long type
, value
;
571 i
= strict_strtoul(argv
[curarg
++], 16, &type
);
572 j
= strict_strtoul(argv
[curarg
++], 16, &value
);
574 if (i
== 0 && type
< 256 &&
575 j
== 0 && value
< 256)
576 event
->parameter
= (type
<< 8) | value
;
581 event
->parameter
= -1;
582 if (curarg
< params
) {
586 rc
= strict_strtoul(argv
[curarg
++], 10, &res
);
588 event
->parameter
= res
;
590 gig_dbg(DEBUG_EVENT
, "parameter==%d", event
->parameter
);
594 if (resp_code
== RSP_ZDLE
)
595 cs
->dle
= event
->parameter
;
602 spin_unlock_irqrestore(&cs
->ev_lock
, flags
);
604 if (curarg
!= params
)
606 "invalid number of processed parameters: %d/%d",
609 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response
);
612 * process closing of connection associated with given AT state structure
614 static void disconnect(struct at_state_t
**at_state_p
)
617 struct bc_state
*bcs
= (*at_state_p
)->bcs
;
618 struct cardstate
*cs
= (*at_state_p
)->cs
;
620 spin_lock_irqsave(&cs
->lock
, flags
);
621 ++(*at_state_p
)->seq_index
;
623 /* revert to selected idle mode */
625 cs
->at_state
.pending_commands
|= PC_UMMODE
;
626 gig_dbg(DEBUG_EVENT
, "Scheduling PC_UMMODE");
627 cs
->commands_pending
= 1;
629 spin_unlock_irqrestore(&cs
->lock
, flags
);
632 /* B channel assigned: invoke hardware specific handler */
633 cs
->ops
->close_bchannel(bcs
);
635 if (bcs
->chstate
& (CHS_D_UP
| CHS_NOTIFY_LL
)) {
636 bcs
->chstate
&= ~(CHS_D_UP
| CHS_NOTIFY_LL
);
637 gigaset_isdn_hupD(bcs
);
640 /* no B channel assigned: just deallocate */
641 spin_lock_irqsave(&cs
->lock
, flags
);
642 list_del(&(*at_state_p
)->list
);
645 spin_unlock_irqrestore(&cs
->lock
, flags
);
650 * get a free AT state structure: either one of those associated with the
651 * B channels of the Gigaset device, or if none of those is available,
652 * a newly allocated one with bcs=NULL
653 * The structure should be freed by calling disconnect() after use.
655 static inline struct at_state_t
*get_free_channel(struct cardstate
*cs
,
657 /* cids: >0: siemens-cid
659 -1: no cid assigned yet
664 struct at_state_t
*ret
;
666 for (i
= 0; i
< cs
->channels
; ++i
)
667 if (gigaset_get_channel(cs
->bcs
+ i
)) {
668 ret
= &cs
->bcs
[i
].at_state
;
673 spin_lock_irqsave(&cs
->lock
, flags
);
674 ret
= kmalloc(sizeof(struct at_state_t
), GFP_ATOMIC
);
676 gigaset_at_init(ret
, NULL
, cs
, cid
);
677 list_add(&ret
->list
, &cs
->temp_at_states
);
679 spin_unlock_irqrestore(&cs
->lock
, flags
);
683 static void init_failed(struct cardstate
*cs
, int mode
)
686 struct at_state_t
*at_state
;
688 cs
->at_state
.pending_commands
&= ~PC_INIT
;
690 cs
->mstate
= MS_UNINITIALIZED
;
691 gigaset_free_channels(cs
);
692 for (i
= 0; i
< cs
->channels
; ++i
) {
693 at_state
= &cs
->bcs
[i
].at_state
;
694 if (at_state
->pending_commands
& PC_CID
) {
695 at_state
->pending_commands
&= ~PC_CID
;
696 at_state
->pending_commands
|= PC_NOCID
;
697 cs
->commands_pending
= 1;
702 static void schedule_init(struct cardstate
*cs
, int state
)
704 if (cs
->at_state
.pending_commands
& PC_INIT
) {
705 gig_dbg(DEBUG_EVENT
, "not scheduling PC_INIT again");
709 cs
->mode
= M_UNKNOWN
;
710 gigaset_block_channels(cs
);
711 cs
->at_state
.pending_commands
|= PC_INIT
;
712 gig_dbg(DEBUG_EVENT
, "Scheduling PC_INIT");
713 cs
->commands_pending
= 1;
716 /* Add "AT" to a command, add the cid, dle encode it, send the result to the
718 static void send_command(struct cardstate
*cs
, const char *cmd
, int cid
,
719 int dle
, gfp_t kmallocflags
)
724 buflen
= strlen(cmd
) + 12; /* DLE ( A T 1 2 3 4 5 <cmd> DLE ) \0 */
725 cb
= kmalloc(sizeof(struct cmdbuf_t
) + buflen
, kmallocflags
);
727 dev_err(cs
->dev
, "%s: out of memory\n", __func__
);
730 if (cid
> 0 && cid
<= 65535)
731 cb
->len
= snprintf(cb
->buf
, buflen
,
732 dle
? "\020(AT%d%s\020)" : "AT%d%s",
735 cb
->len
= snprintf(cb
->buf
, buflen
,
736 dle
? "\020(AT%s\020)" : "AT%s",
740 cb
->wake_tasklet
= NULL
;
741 cs
->ops
->write_cmd(cs
, cb
);
744 static struct at_state_t
*at_state_from_cid(struct cardstate
*cs
, int cid
)
746 struct at_state_t
*at_state
;
751 return &cs
->at_state
;
753 for (i
= 0; i
< cs
->channels
; ++i
)
754 if (cid
== cs
->bcs
[i
].at_state
.cid
)
755 return &cs
->bcs
[i
].at_state
;
757 spin_lock_irqsave(&cs
->lock
, flags
);
759 list_for_each_entry(at_state
, &cs
->temp_at_states
, list
)
760 if (cid
== at_state
->cid
) {
761 spin_unlock_irqrestore(&cs
->lock
, flags
);
765 spin_unlock_irqrestore(&cs
->lock
, flags
);
770 static void bchannel_down(struct bc_state
*bcs
)
772 if (bcs
->chstate
& CHS_B_UP
) {
773 bcs
->chstate
&= ~CHS_B_UP
;
774 gigaset_isdn_hupB(bcs
);
777 if (bcs
->chstate
& (CHS_D_UP
| CHS_NOTIFY_LL
)) {
778 bcs
->chstate
&= ~(CHS_D_UP
| CHS_NOTIFY_LL
);
779 gigaset_isdn_hupD(bcs
);
782 gigaset_free_channel(bcs
);
784 gigaset_bcs_reinit(bcs
);
787 static void bchannel_up(struct bc_state
*bcs
)
789 if (bcs
->chstate
& CHS_B_UP
) {
790 dev_notice(bcs
->cs
->dev
, "%s: B channel already up\n",
795 bcs
->chstate
|= CHS_B_UP
;
796 gigaset_isdn_connB(bcs
);
799 static void start_dial(struct at_state_t
*at_state
, void *data
,
802 struct bc_state
*bcs
= at_state
->bcs
;
803 struct cardstate
*cs
= at_state
->cs
;
804 char **commands
= data
;
808 bcs
->chstate
|= CHS_NOTIFY_LL
;
810 spin_lock_irqsave(&cs
->lock
, flags
);
811 if (at_state
->seq_index
!= seq_index
) {
812 spin_unlock_irqrestore(&cs
->lock
, flags
);
815 spin_unlock_irqrestore(&cs
->lock
, flags
);
817 for (i
= 0; i
< AT_NUM
; ++i
) {
818 kfree(bcs
->commands
[i
]);
819 bcs
->commands
[i
] = commands
[i
];
822 at_state
->pending_commands
|= PC_CID
;
823 gig_dbg(DEBUG_EVENT
, "Scheduling PC_CID");
824 cs
->commands_pending
= 1;
828 for (i
= 0; i
< AT_NUM
; ++i
) {
832 at_state
->pending_commands
|= PC_NOCID
;
833 gig_dbg(DEBUG_EVENT
, "Scheduling PC_NOCID");
834 cs
->commands_pending
= 1;
838 static void start_accept(struct at_state_t
*at_state
)
840 struct cardstate
*cs
= at_state
->cs
;
841 struct bc_state
*bcs
= at_state
->bcs
;
844 for (i
= 0; i
< AT_NUM
; ++i
) {
845 kfree(bcs
->commands
[i
]);
846 bcs
->commands
[i
] = NULL
;
849 bcs
->commands
[AT_PROTO
] = kmalloc(9, GFP_ATOMIC
);
850 bcs
->commands
[AT_ISO
] = kmalloc(9, GFP_ATOMIC
);
851 if (!bcs
->commands
[AT_PROTO
] || !bcs
->commands
[AT_ISO
]) {
852 dev_err(at_state
->cs
->dev
, "out of memory\n");
854 at_state
->pending_commands
|= PC_HUP
;
855 gig_dbg(DEBUG_EVENT
, "Scheduling PC_HUP");
856 cs
->commands_pending
= 1;
860 snprintf(bcs
->commands
[AT_PROTO
], 9, "^SBPR=%u\r", bcs
->proto2
);
861 snprintf(bcs
->commands
[AT_ISO
], 9, "^SISO=%u\r", bcs
->channel
+ 1);
863 at_state
->pending_commands
|= PC_ACCEPT
;
864 gig_dbg(DEBUG_EVENT
, "Scheduling PC_ACCEPT");
865 cs
->commands_pending
= 1;
868 static void do_start(struct cardstate
*cs
)
870 gigaset_free_channels(cs
);
872 if (cs
->mstate
!= MS_LOCKED
)
873 schedule_init(cs
, MS_INIT
);
876 gigaset_isdn_start(cs
);
879 wake_up(&cs
->waitqueue
);
882 static void finish_shutdown(struct cardstate
*cs
)
884 if (cs
->mstate
!= MS_LOCKED
) {
885 cs
->mstate
= MS_UNINITIALIZED
;
886 cs
->mode
= M_UNKNOWN
;
889 /* Tell the LL that the device is not available .. */
892 gigaset_isdn_stop(cs
);
895 /* The rest is done by cleanup_cs () in user mode. */
897 cs
->cmd_result
= -ENODEV
;
899 wake_up(&cs
->waitqueue
);
902 static void do_shutdown(struct cardstate
*cs
)
904 gigaset_block_channels(cs
);
906 if (cs
->mstate
== MS_READY
) {
907 cs
->mstate
= MS_SHUTDOWN
;
908 cs
->at_state
.pending_commands
|= PC_SHUTDOWN
;
909 gig_dbg(DEBUG_EVENT
, "Scheduling PC_SHUTDOWN");
910 cs
->commands_pending
= 1;
915 static void do_stop(struct cardstate
*cs
)
919 spin_lock_irqsave(&cs
->lock
, flags
);
921 spin_unlock_irqrestore(&cs
->lock
, flags
);
926 /* Entering cid mode or getting a cid failed:
927 * try to initialize the device and try again.
929 * channel >= 0: getting cid for the channel failed
930 * channel < 0: entering cid mode failed
932 * returns 0 on failure
934 static int reinit_and_retry(struct cardstate
*cs
, int channel
)
938 if (--cs
->retry_count
<= 0)
941 for (i
= 0; i
< cs
->channels
; ++i
)
942 if (cs
->bcs
[i
].at_state
.cid
> 0)
947 "Could not enter cid mode. Reinit device and try again.\n");
950 "Could not get a call id. Reinit device and try again.\n");
951 cs
->bcs
[channel
].at_state
.pending_commands
|= PC_CID
;
953 schedule_init(cs
, MS_INIT
);
957 static int at_state_invalid(struct cardstate
*cs
,
958 struct at_state_t
*test_ptr
)
962 struct at_state_t
*at_state
;
965 spin_lock_irqsave(&cs
->lock
, flags
);
967 if (test_ptr
== &cs
->at_state
)
970 list_for_each_entry(at_state
, &cs
->temp_at_states
, list
)
971 if (at_state
== test_ptr
)
974 for (channel
= 0; channel
< cs
->channels
; ++channel
)
975 if (&cs
->bcs
[channel
].at_state
== test_ptr
)
980 spin_unlock_irqrestore(&cs
->lock
, flags
);
984 static void handle_icall(struct cardstate
*cs
, struct bc_state
*bcs
,
985 struct at_state_t
**p_at_state
)
988 struct at_state_t
*at_state
= *p_at_state
;
990 retval
= gigaset_isdn_icall(at_state
);
995 dev_err(cs
->dev
, "internal error: disposition=%d\n", retval
);
996 /* --v-- fall through --v-- */
1000 * Device doc says that would reject the call.
1001 * In fact it doesn't.
1003 at_state
->pending_commands
|= PC_HUP
;
1004 cs
->commands_pending
= 1;
1009 static int do_lock(struct cardstate
*cs
)
1014 switch (cs
->mstate
) {
1015 case MS_UNINITIALIZED
:
1017 if (cs
->cur_at_seq
|| !list_empty(&cs
->temp_at_states
) ||
1018 cs
->at_state
.pending_commands
)
1021 for (i
= 0; i
< cs
->channels
; ++i
)
1022 if (cs
->bcs
[i
].at_state
.pending_commands
)
1025 if (!gigaset_get_channels(cs
))
1036 cs
->mstate
= MS_LOCKED
;
1037 cs
->mode
= M_UNKNOWN
;
1042 static int do_unlock(struct cardstate
*cs
)
1044 if (cs
->mstate
!= MS_LOCKED
)
1047 cs
->mstate
= MS_UNINITIALIZED
;
1048 cs
->mode
= M_UNKNOWN
;
1049 gigaset_free_channels(cs
);
1051 schedule_init(cs
, MS_INIT
);
1056 static void do_action(int action
, struct cardstate
*cs
,
1057 struct bc_state
*bcs
,
1058 struct at_state_t
**p_at_state
, char **pp_command
,
1059 int *p_genresp
, int *p_resp_code
,
1062 struct at_state_t
*at_state
= *p_at_state
;
1063 struct at_state_t
*at_state2
;
1064 unsigned long flags
;
1068 unsigned char *s
, *e
;
1076 at_state
->waiting
= 1;
1079 cs
->at_state
.pending_commands
&= ~PC_INIT
;
1080 cs
->cur_at_seq
= SEQ_NONE
;
1081 cs
->mode
= M_UNIMODEM
;
1082 spin_lock_irqsave(&cs
->lock
, flags
);
1084 spin_unlock_irqrestore(&cs
->lock
, flags
);
1085 gigaset_free_channels(cs
);
1086 cs
->mstate
= MS_READY
;
1089 spin_unlock_irqrestore(&cs
->lock
, flags
);
1090 cs
->at_state
.pending_commands
|= PC_CIDMODE
;
1091 gig_dbg(DEBUG_EVENT
, "Scheduling PC_CIDMODE");
1092 cs
->commands_pending
= 1;
1095 dev_warn(cs
->dev
, "Could not initialize the device.\n");
1097 init_failed(cs
, M_UNKNOWN
);
1098 cs
->cur_at_seq
= SEQ_NONE
;
1100 case ACT_CONFIGMODE
:
1101 init_failed(cs
, M_CONFIG
);
1102 cs
->cur_at_seq
= SEQ_NONE
;
1106 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1107 cs
->inbuf
[0].inputstate
&=
1108 ~(INS_command
| INS_DLE_command
);
1112 cs
->inbuf
[0].inputstate
=
1113 (cs
->inbuf
[0].inputstate
& ~INS_DLE_command
)
1117 if (cs
->mstate
== MS_INIT
|| cs
->mstate
== MS_RECOVER
) {
1118 gigaset_free_channels(cs
);
1119 cs
->mstate
= MS_READY
;
1122 cs
->cur_at_seq
= SEQ_NONE
;
1125 cs
->mode
= M_UNIMODEM
;
1126 cs
->cur_at_seq
= SEQ_NONE
;
1129 cs
->cur_at_seq
= SEQ_NONE
;
1130 if (cs
->mstate
== MS_INIT
|| cs
->mstate
== MS_RECOVER
) {
1131 init_failed(cs
, M_UNKNOWN
);
1134 if (!reinit_and_retry(cs
, -1))
1135 schedule_init(cs
, MS_RECOVER
);
1138 cs
->cur_at_seq
= SEQ_NONE
;
1139 schedule_init(cs
, MS_RECOVER
);
1142 /* send "+++" (hangup in unimodem mode) */
1143 if (cs
->connected
) {
1144 struct cmdbuf_t
*cb
;
1146 cb
= kmalloc(sizeof(struct cmdbuf_t
) + 3, GFP_ATOMIC
);
1148 dev_err(cs
->dev
, "%s: out of memory\n",
1152 memcpy(cb
->buf
, "+++", 3);
1156 cb
->wake_tasklet
= NULL
;
1157 cs
->ops
->write_cmd(cs
, cb
);
1161 /* get fresh AT state structure for new CID */
1162 at_state2
= get_free_channel(cs
, ev
->parameter
);
1165 "RING ignored: could not allocate channel structure\n");
1169 /* initialize AT state structure
1170 * note that bcs may be NULL if no B channel is free
1172 at_state2
->ConState
= 700;
1173 for (i
= 0; i
< STR_NUM
; ++i
) {
1174 kfree(at_state2
->str_var
[i
]);
1175 at_state2
->str_var
[i
] = NULL
;
1177 at_state2
->int_var
[VAR_ZCTP
] = -1;
1179 spin_lock_irqsave(&cs
->lock
, flags
);
1180 at_state2
->timer_expires
= RING_TIMEOUT
;
1181 at_state2
->timer_active
= 1;
1182 spin_unlock_irqrestore(&cs
->lock
, flags
);
1185 handle_icall(cs
, bcs
, p_at_state
);
1188 dev_warn(cs
->dev
, "Could not shut down the device.\n");
1192 cs
->cur_at_seq
= SEQ_NONE
;
1193 finish_shutdown(cs
);
1196 if (cs
->onechannel
) {
1197 at_state
->pending_commands
|= PC_DLE1
;
1198 cs
->commands_pending
= 1;
1201 bcs
->chstate
|= CHS_D_UP
;
1202 gigaset_isdn_connD(bcs
);
1203 cs
->ops
->init_bchannel(bcs
);
1206 cs
->cur_at_seq
= SEQ_NONE
;
1207 bcs
= cs
->bcs
+ cs
->curchannel
;
1209 bcs
->chstate
|= CHS_D_UP
;
1210 gigaset_isdn_connD(bcs
);
1211 cs
->ops
->init_bchannel(bcs
);
1214 at_state
->int_var
[VAR_ZSAU
] = ZSAU_NULL
;
1216 case ACT_DISCONNECT
:
1217 cs
->cur_at_seq
= SEQ_NONE
;
1219 if (bcs
&& cs
->onechannel
&& cs
->dle
) {
1220 /* Check for other open channels not needed:
1221 * DLE only used for M10x with one B channel.
1223 at_state
->pending_commands
|= PC_DLE0
;
1224 cs
->commands_pending
= 1;
1226 disconnect(p_at_state
);
1229 at_state
->int_var
[VAR_ZDLE
] = 0;
1233 cs
->cur_at_seq
= SEQ_NONE
;
1234 at_state2
= &cs
->bcs
[cs
->curchannel
].at_state
;
1235 disconnect(&at_state2
);
1238 cs
->cur_at_seq
= SEQ_NONE
;
1239 dev_warn(cs
->dev
, "Could not hang up.\n");
1241 if (bcs
&& cs
->onechannel
)
1242 at_state
->pending_commands
|= PC_DLE0
;
1244 disconnect(p_at_state
);
1245 schedule_init(cs
, MS_RECOVER
);
1248 cs
->cur_at_seq
= SEQ_NONE
;
1249 dev_warn(cs
->dev
, "Could not leave DLE mode.\n");
1250 at_state2
= &cs
->bcs
[cs
->curchannel
].at_state
;
1251 disconnect(&at_state2
);
1252 schedule_init(cs
, MS_RECOVER
);
1255 cs
->cur_at_seq
= SEQ_NONE
;
1257 "Could not enter DLE mode. Trying to hang up.\n");
1258 channel
= cs
->curchannel
;
1259 cs
->bcs
[channel
].at_state
.pending_commands
|= PC_HUP
;
1260 cs
->commands_pending
= 1;
1263 case ACT_CID
: /* got cid; start dialing */
1264 cs
->cur_at_seq
= SEQ_NONE
;
1265 channel
= cs
->curchannel
;
1266 if (ev
->parameter
> 0 && ev
->parameter
<= 65535) {
1267 cs
->bcs
[channel
].at_state
.cid
= ev
->parameter
;
1268 cs
->bcs
[channel
].at_state
.pending_commands
|=
1270 cs
->commands_pending
= 1;
1275 cs
->cur_at_seq
= SEQ_NONE
;
1276 channel
= cs
->curchannel
;
1277 if (!reinit_and_retry(cs
, channel
)) {
1279 "Could not get a call ID. Cannot dial.\n");
1280 at_state2
= &cs
->bcs
[channel
].at_state
;
1281 disconnect(&at_state2
);
1285 cs
->cur_at_seq
= SEQ_NONE
;
1286 at_state2
= &cs
->bcs
[cs
->curchannel
].at_state
;
1287 disconnect(&at_state2
);
1292 cs
->cur_at_seq
= SEQ_NONE
;
1295 case ACT_ABORTACCEPT
: /* hangup/error/timeout during ICALL procssng */
1296 disconnect(p_at_state
);
1299 case ACT_ABORTDIAL
: /* error/timeout during dial preparation */
1300 cs
->cur_at_seq
= SEQ_NONE
;
1301 at_state
->pending_commands
|= PC_HUP
;
1302 cs
->commands_pending
= 1;
1305 case ACT_REMOTEREJECT
: /* DISCONNECT_IND after dialling */
1306 case ACT_CONNTIMEOUT
: /* timeout waiting for ZSAU=ACTIVE */
1307 case ACT_REMOTEHUP
: /* DISCONNECT_IND with established connection */
1308 at_state
->pending_commands
|= PC_HUP
;
1309 cs
->commands_pending
= 1;
1311 case ACT_GETSTRING
: /* warning: RING, ZDLE, ...
1312 are not handled properly anymore */
1313 at_state
->getstring
= 1;
1318 *p_resp_code
= RSP_ERROR
;
1323 if (!strcmp(s
, "OK")) {
1325 *p_resp_code
= RSP_ERROR
;
1329 for (i
= 0; i
< 4; ++i
) {
1330 val
= simple_strtoul(s
, (char **) &e
, 10);
1331 if (val
> INT_MAX
|| e
== s
)
1336 } else if (*e
!= '.')
1344 *p_resp_code
= RSP_ERROR
;
1347 /*at_state->getstring = 1;*/
1351 if (cs
->gotfwver
== 0) {
1353 gig_dbg(DEBUG_EVENT
,
1354 "firmware version %02d.%03d.%02d.%02d",
1355 cs
->fwver
[0], cs
->fwver
[1],
1356 cs
->fwver
[2], cs
->fwver
[3]);
1362 dev_err(cs
->dev
, "could not read firmware version.\n");
1365 gig_dbg(DEBUG_ANY
, "%s: ERROR response in ConState %d",
1366 __func__
, at_state
->ConState
);
1367 cs
->cur_at_seq
= SEQ_NONE
;
1370 gig_dbg(DEBUG_ANY
, "%s: resp_code %d in ConState %d",
1371 __func__
, ev
->type
, at_state
->ConState
);
1374 dev_warn(cs
->dev
, "%s: resp_code %d in ConState %d!\n",
1375 __func__
, ev
->type
, at_state
->ConState
);
1378 dev_warn(cs
->dev
, "cause code %04x in connection state %d.\n",
1379 ev
->parameter
, at_state
->ConState
);
1382 /* events from the LL */
1384 start_dial(at_state
, ev
->ptr
, ev
->parameter
);
1387 start_accept(at_state
);
1390 at_state
->pending_commands
|= PC_HUP
;
1391 gig_dbg(DEBUG_EVENT
, "Scheduling PC_HUP");
1392 cs
->commands_pending
= 1;
1395 /* hotplug events */
1403 /* events from the interface */
1405 cs
->cmd_result
= ev
->parameter
? do_lock(cs
) : do_unlock(cs
);
1407 wake_up(&cs
->waitqueue
);
1410 if (ev
->parameter
!= 0)
1411 cs
->cmd_result
= -EINVAL
;
1412 else if (cs
->gotfwver
!= 1) {
1413 cs
->cmd_result
= -ENOENT
;
1415 memcpy(ev
->arg
, cs
->fwver
, sizeof cs
->fwver
);
1419 wake_up(&cs
->waitqueue
);
1422 /* events from the proc file system */
1423 case ACT_PROC_CIDMODE
:
1424 spin_lock_irqsave(&cs
->lock
, flags
);
1425 if (ev
->parameter
!= cs
->cidmode
) {
1426 cs
->cidmode
= ev
->parameter
;
1427 if (ev
->parameter
) {
1428 cs
->at_state
.pending_commands
|= PC_CIDMODE
;
1429 gig_dbg(DEBUG_EVENT
, "Scheduling PC_CIDMODE");
1431 cs
->at_state
.pending_commands
|= PC_UMMODE
;
1432 gig_dbg(DEBUG_EVENT
, "Scheduling PC_UMMODE");
1434 cs
->commands_pending
= 1;
1436 spin_unlock_irqrestore(&cs
->lock
, flags
);
1438 wake_up(&cs
->waitqueue
);
1441 /* events from the hardware drivers */
1442 case ACT_NOTIFY_BC_DOWN
:
1445 case ACT_NOTIFY_BC_UP
:
1454 if (action
>= ACT_CMD
&& action
< ACT_CMD
+ AT_NUM
) {
1455 *pp_command
= at_state
->bcs
->commands
[action
- ACT_CMD
];
1458 *p_resp_code
= RSP_NULL
;
1461 dev_err(cs
->dev
, "%s: action==%d!\n", __func__
, action
);
1465 /* State machine to do the calling and hangup procedure */
1466 static void process_event(struct cardstate
*cs
, struct event_t
*ev
)
1468 struct bc_state
*bcs
;
1469 char *p_command
= NULL
;
1470 struct reply_t
*rep
;
1473 int resp_code
= RSP_ERROR
;
1475 struct at_state_t
*at_state
;
1478 unsigned long flags
;
1481 at_state
= at_state_from_cid(cs
, ev
->cid
);
1483 gig_dbg(DEBUG_EVENT
, "event %d for invalid cid %d",
1485 gigaset_add_event(cs
, &cs
->at_state
, RSP_WRONG_CID
,
1490 at_state
= ev
->at_state
;
1491 if (at_state_invalid(cs
, at_state
)) {
1492 gig_dbg(DEBUG_EVENT
, "event for invalid at_state %p",
1498 gig_dbg(DEBUG_EVENT
, "connection state %d, event %d",
1499 at_state
->ConState
, ev
->type
);
1501 bcs
= at_state
->bcs
;
1502 sendcid
= at_state
->cid
;
1504 /* Setting the pointer to the dial array */
1505 rep
= at_state
->replystruct
;
1507 spin_lock_irqsave(&cs
->lock
, flags
);
1508 if (ev
->type
== EV_TIMEOUT
) {
1509 if (ev
->parameter
!= at_state
->timer_index
1510 || !at_state
->timer_active
) {
1511 ev
->type
= RSP_NONE
; /* old timeout */
1512 gig_dbg(DEBUG_EVENT
, "old timeout");
1513 } else if (!at_state
->waiting
)
1514 gig_dbg(DEBUG_EVENT
, "timeout occurred");
1516 gig_dbg(DEBUG_EVENT
, "stopped waiting");
1518 spin_unlock_irqrestore(&cs
->lock
, flags
);
1520 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1521 or at_state->str_var[STR_XXXX], set it */
1522 if (ev
->type
>= RSP_VAR
&& ev
->type
< RSP_VAR
+ VAR_NUM
) {
1523 index
= ev
->type
- RSP_VAR
;
1524 at_state
->int_var
[index
] = ev
->parameter
;
1525 } else if (ev
->type
>= RSP_STR
&& ev
->type
< RSP_STR
+ STR_NUM
) {
1526 index
= ev
->type
- RSP_STR
;
1527 kfree(at_state
->str_var
[index
]);
1528 at_state
->str_var
[index
] = ev
->ptr
;
1529 ev
->ptr
= NULL
; /* prevent process_events() from
1533 if (ev
->type
== EV_TIMEOUT
|| ev
->type
== RSP_STRING
)
1534 at_state
->getstring
= 0;
1536 /* Search row in dial array which matches modem response and current
1539 rcode
= rep
->resp_code
;
1540 if (rcode
== RSP_LAST
) {
1541 /* found nothing...*/
1542 dev_warn(cs
->dev
, "%s: rcode=RSP_LAST: "
1543 "resp_code %d in ConState %d!\n",
1544 __func__
, ev
->type
, at_state
->ConState
);
1547 if ((rcode
== RSP_ANY
|| rcode
== ev
->type
)
1548 && ((int) at_state
->ConState
>= rep
->min_ConState
)
1549 && (rep
->max_ConState
< 0
1550 || (int) at_state
->ConState
<= rep
->max_ConState
)
1551 && (rep
->parameter
< 0 || rep
->parameter
== ev
->parameter
))
1555 p_command
= rep
->command
;
1557 at_state
->waiting
= 0;
1558 for (curact
= 0; curact
< MAXACT
; ++curact
) {
1559 /* The row tells us what we should do ..
1561 do_action(rep
->action
[curact
], cs
, bcs
, &at_state
, &p_command
,
1562 &genresp
, &resp_code
, ev
);
1564 break; /* may be freed after disconnect */
1568 /* Jump to the next con-state regarding the array */
1569 if (rep
->new_ConState
>= 0)
1570 at_state
->ConState
= rep
->new_ConState
;
1573 spin_lock_irqsave(&cs
->lock
, flags
);
1574 at_state
->timer_expires
= 0;
1575 at_state
->timer_active
= 0;
1576 spin_unlock_irqrestore(&cs
->lock
, flags
);
1577 gigaset_add_event(cs
, at_state
, resp_code
,
1580 /* Send command to modem if not NULL... */
1583 send_command(cs
, p_command
,
1587 gigaset_add_event(cs
, at_state
,
1592 spin_lock_irqsave(&cs
->lock
, flags
);
1593 if (!rep
->timeout
) {
1594 at_state
->timer_expires
= 0;
1595 at_state
->timer_active
= 0;
1596 } else if (rep
->timeout
> 0) { /* new timeout */
1597 at_state
->timer_expires
= rep
->timeout
* 10;
1598 at_state
->timer_active
= 1;
1599 ++at_state
->timer_index
;
1601 spin_unlock_irqrestore(&cs
->lock
, flags
);
1606 static void schedule_sequence(struct cardstate
*cs
,
1607 struct at_state_t
*at_state
, int sequence
)
1609 cs
->cur_at_seq
= sequence
;
1610 gigaset_add_event(cs
, at_state
, RSP_INIT
, NULL
, sequence
, NULL
);
1613 static void process_command_flags(struct cardstate
*cs
)
1615 struct at_state_t
*at_state
= NULL
;
1616 struct bc_state
*bcs
;
1619 unsigned long flags
;
1621 cs
->commands_pending
= 0;
1623 if (cs
->cur_at_seq
) {
1624 gig_dbg(DEBUG_EVENT
, "not searching scheduled commands: busy");
1628 gig_dbg(DEBUG_EVENT
, "searching scheduled commands");
1630 sequence
= SEQ_NONE
;
1632 /* clear pending_commands and hangup channels on shutdown */
1633 if (cs
->at_state
.pending_commands
& PC_SHUTDOWN
) {
1634 cs
->at_state
.pending_commands
&= ~PC_CIDMODE
;
1635 for (i
= 0; i
< cs
->channels
; ++i
) {
1637 at_state
= &bcs
->at_state
;
1638 at_state
->pending_commands
&=
1639 ~(PC_DLE1
| PC_ACCEPT
| PC_DIAL
);
1640 if (at_state
->cid
> 0)
1641 at_state
->pending_commands
|= PC_HUP
;
1642 if (at_state
->pending_commands
& PC_CID
) {
1643 at_state
->pending_commands
|= PC_NOCID
;
1644 at_state
->pending_commands
&= ~PC_CID
;
1649 /* clear pending_commands and hangup channels on reset */
1650 if (cs
->at_state
.pending_commands
& PC_INIT
) {
1651 cs
->at_state
.pending_commands
&= ~PC_CIDMODE
;
1652 for (i
= 0; i
< cs
->channels
; ++i
) {
1654 at_state
= &bcs
->at_state
;
1655 at_state
->pending_commands
&=
1656 ~(PC_DLE1
| PC_ACCEPT
| PC_DIAL
);
1657 if (at_state
->cid
> 0)
1658 at_state
->pending_commands
|= PC_HUP
;
1659 if (cs
->mstate
== MS_RECOVER
) {
1660 if (at_state
->pending_commands
& PC_CID
) {
1661 at_state
->pending_commands
|= PC_NOCID
;
1662 at_state
->pending_commands
&= ~PC_CID
;
1668 /* only switch back to unimodem mode if no commands are pending and
1669 * no channels are up */
1670 spin_lock_irqsave(&cs
->lock
, flags
);
1671 if (cs
->at_state
.pending_commands
== PC_UMMODE
1673 && list_empty(&cs
->temp_at_states
)
1674 && cs
->mode
== M_CID
) {
1675 sequence
= SEQ_UMMODE
;
1676 at_state
= &cs
->at_state
;
1677 for (i
= 0; i
< cs
->channels
; ++i
) {
1679 if (bcs
->at_state
.pending_commands
||
1680 bcs
->at_state
.cid
> 0) {
1681 sequence
= SEQ_NONE
;
1686 spin_unlock_irqrestore(&cs
->lock
, flags
);
1687 cs
->at_state
.pending_commands
&= ~PC_UMMODE
;
1688 if (sequence
!= SEQ_NONE
) {
1689 schedule_sequence(cs
, at_state
, sequence
);
1693 for (i
= 0; i
< cs
->channels
; ++i
) {
1695 if (bcs
->at_state
.pending_commands
& PC_HUP
) {
1696 bcs
->at_state
.pending_commands
&= ~PC_HUP
;
1697 if (bcs
->at_state
.pending_commands
& PC_CID
) {
1698 /* not yet dialing: PC_NOCID is sufficient */
1699 bcs
->at_state
.pending_commands
|= PC_NOCID
;
1700 bcs
->at_state
.pending_commands
&= ~PC_CID
;
1702 schedule_sequence(cs
, &bcs
->at_state
, SEQ_HUP
);
1706 if (bcs
->at_state
.pending_commands
& PC_NOCID
) {
1707 bcs
->at_state
.pending_commands
&= ~PC_NOCID
;
1708 cs
->curchannel
= bcs
->channel
;
1709 schedule_sequence(cs
, &cs
->at_state
, SEQ_NOCID
);
1711 } else if (bcs
->at_state
.pending_commands
& PC_DLE0
) {
1712 bcs
->at_state
.pending_commands
&= ~PC_DLE0
;
1713 cs
->curchannel
= bcs
->channel
;
1714 schedule_sequence(cs
, &cs
->at_state
, SEQ_DLE0
);
1719 list_for_each_entry(at_state
, &cs
->temp_at_states
, list
)
1720 if (at_state
->pending_commands
& PC_HUP
) {
1721 at_state
->pending_commands
&= ~PC_HUP
;
1722 schedule_sequence(cs
, at_state
, SEQ_HUP
);
1726 if (cs
->at_state
.pending_commands
& PC_INIT
) {
1727 cs
->at_state
.pending_commands
&= ~PC_INIT
;
1729 cs
->inbuf
->inputstate
= INS_command
;
1730 schedule_sequence(cs
, &cs
->at_state
, SEQ_INIT
);
1733 if (cs
->at_state
.pending_commands
& PC_SHUTDOWN
) {
1734 cs
->at_state
.pending_commands
&= ~PC_SHUTDOWN
;
1735 schedule_sequence(cs
, &cs
->at_state
, SEQ_SHUTDOWN
);
1738 if (cs
->at_state
.pending_commands
& PC_CIDMODE
) {
1739 cs
->at_state
.pending_commands
&= ~PC_CIDMODE
;
1740 if (cs
->mode
== M_UNIMODEM
) {
1741 cs
->retry_count
= 1;
1742 schedule_sequence(cs
, &cs
->at_state
, SEQ_CIDMODE
);
1747 for (i
= 0; i
< cs
->channels
; ++i
) {
1749 if (bcs
->at_state
.pending_commands
& PC_DLE1
) {
1750 bcs
->at_state
.pending_commands
&= ~PC_DLE1
;
1751 cs
->curchannel
= bcs
->channel
;
1752 schedule_sequence(cs
, &cs
->at_state
, SEQ_DLE1
);
1755 if (bcs
->at_state
.pending_commands
& PC_ACCEPT
) {
1756 bcs
->at_state
.pending_commands
&= ~PC_ACCEPT
;
1757 schedule_sequence(cs
, &bcs
->at_state
, SEQ_ACCEPT
);
1760 if (bcs
->at_state
.pending_commands
& PC_DIAL
) {
1761 bcs
->at_state
.pending_commands
&= ~PC_DIAL
;
1762 schedule_sequence(cs
, &bcs
->at_state
, SEQ_DIAL
);
1765 if (bcs
->at_state
.pending_commands
& PC_CID
) {
1768 cs
->at_state
.pending_commands
|= PC_CIDMODE
;
1769 gig_dbg(DEBUG_EVENT
, "Scheduling PC_CIDMODE");
1770 cs
->commands_pending
= 1;
1773 schedule_init(cs
, MS_INIT
);
1776 bcs
->at_state
.pending_commands
&= ~PC_CID
;
1777 cs
->curchannel
= bcs
->channel
;
1778 cs
->retry_count
= 2;
1779 schedule_sequence(cs
, &cs
->at_state
, SEQ_CID
);
1785 static void process_events(struct cardstate
*cs
)
1788 unsigned head
, tail
;
1790 int check_flags
= 0;
1792 unsigned long flags
;
1794 spin_lock_irqsave(&cs
->ev_lock
, flags
);
1797 for (i
= 0; i
< 2 * MAX_EVENTS
; ++i
) {
1800 if (!check_flags
&& !cs
->commands_pending
)
1803 spin_unlock_irqrestore(&cs
->ev_lock
, flags
);
1804 process_command_flags(cs
);
1805 spin_lock_irqsave(&cs
->ev_lock
, flags
);
1808 if (!cs
->commands_pending
)
1814 ev
= cs
->events
+ head
;
1815 was_busy
= cs
->cur_at_seq
!= SEQ_NONE
;
1816 spin_unlock_irqrestore(&cs
->ev_lock
, flags
);
1817 process_event(cs
, ev
);
1818 spin_lock_irqsave(&cs
->ev_lock
, flags
);
1821 if (was_busy
&& cs
->cur_at_seq
== SEQ_NONE
)
1824 head
= (head
+ 1) % MAX_EVENTS
;
1828 spin_unlock_irqrestore(&cs
->ev_lock
, flags
);
1830 if (i
== 2 * MAX_EVENTS
) {
1832 "infinite loop in process_events; aborting.\n");
1836 /* tasklet scheduled on any event received from the Gigaset device
1838 * data ISDN controller state structure
1840 void gigaset_handle_event(unsigned long data
)
1842 struct cardstate
*cs
= (struct cardstate
*) data
;
1844 /* handle incoming data on control/common channel */
1845 if (cs
->inbuf
->head
!= cs
->inbuf
->tail
) {
1846 gig_dbg(DEBUG_INTR
, "processing new data");
1847 cs
->ops
->handle_input(cs
->inbuf
);