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 */
41 /* Possible ASCII responses */
56 #define RSP_ZABINFO 14
57 #define RSP_ZSMLSTCHG 15
59 #define RSP_ZSAU (RSP_VAR + VAR_ZSAU)
60 #define RSP_ZDLE (RSP_VAR + VAR_ZDLE)
61 #define RSP_ZVLS (RSP_VAR + VAR_ZVLS)
62 #define RSP_ZCTP (RSP_VAR + VAR_ZCTP)
63 #define RSP_STR (RSP_VAR + VAR_NUM)
64 #define RSP_NMBR (RSP_STR + STR_NMBR)
65 #define RSP_ZCPN (RSP_STR + STR_ZCPN)
66 #define RSP_ZCON (RSP_STR + STR_ZCON)
67 #define RSP_ZBC (RSP_STR + STR_ZBC)
68 #define RSP_ZHLC (RSP_STR + STR_ZHLC)
69 #define RSP_ERROR -1 /* ERROR */
70 #define RSP_WRONG_CID -2 /* unknown cid in cmd */
71 #define RSP_UNKNOWN -4 /* unknown response */
72 #define RSP_FAIL -5 /* internal error */
73 #define RSP_INVAL -6 /* invalid response */
76 #define RSP_STRING -20
78 #define RSP_RETRYFAIL -22
86 /* actions for process_response */
90 #define ACT_FAILINIT 3
91 #define ACT_HUPMODEM 4
92 #define ACT_CONFIGMODE 5
96 #define ACT_FAILDLE0 9
97 #define ACT_FAILDLE1 10
100 #define ACT_FAILCID 13
102 #define ACT_FAILSDOWN 15
105 #define ACT_DIALING 18
106 #define ACT_ABORTDIAL 19
107 #define ACT_DISCONNECT 20
108 #define ACT_CONNECT 21
109 #define ACT_REMOTEREJECT 22
110 #define ACT_CONNTIMEOUT 23
111 #define ACT_REMOTEHUP 24
112 #define ACT_ABORTHUP 25
114 #define ACT_ACCEPTED 27
115 #define ACT_ABORTACCEPT 28
116 #define ACT_TIMEOUT 29
117 #define ACT_GETSTRING 30
118 #define ACT_SETVER 31
119 #define ACT_FAILVER 32
120 #define ACT_GOTVER 33
123 #define ACT_ABORTCID 36
125 #define ACT_NOTIFY_BC_DOWN 38
126 #define ACT_NOTIFY_BC_UP 39
128 #define ACT_ACCEPT 41
130 #define ACT_IF_LOCK 44
133 #define ACT_FAKEDLE0 47
134 #define ACT_FAKEHUP 48
135 #define ACT_FAKESDOWN 49
136 #define ACT_SHUTDOWN 50
137 #define ACT_PROC_CIDMODE 51
138 #define ACT_UMODESET 52
139 #define ACT_FAILUMODE 53
140 #define ACT_CMODESET 54
141 #define ACT_FAILCMODE 55
142 #define ACT_IF_VER 56
145 /* at command sequences */
151 #define SEQ_NOCID 350
154 #define SEQ_ACCEPT 720
155 #define SEQ_SHUTDOWN 500
156 #define SEQ_CIDMODE 10
157 #define SEQ_UMMODE 11
160 /* 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid),
161 * 400: hup, 500: reset, 600: dial, 700: ring */
162 struct reply_t gigaset_tab_nocid[] =
164 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout,
167 /* initialize device, set cid mode if possible */
168 {RSP_INIT, -1, -1, SEQ_INIT, 100, 1, {ACT_TIMEOUT} },
170 {EV_TIMEOUT, 100, 100, -1, 101, 3, {0}, "Z\r"},
171 {RSP_OK, 101, 103, -1, 120, 5, {ACT_GETSTRING},
174 {EV_TIMEOUT, 101, 101, -1, 102, 5, {0}, "Z\r"},
175 {RSP_ERROR, 101, 101, -1, 102, 5, {0}, "Z\r"},
177 {EV_TIMEOUT, 102, 102, -1, 108, 5, {ACT_SETDLE1},
179 {RSP_OK, 108, 108, -1, 104, -1},
180 {RSP_ZDLE, 104, 104, 0, 103, 5, {0}, "Z\r"},
181 {EV_TIMEOUT, 104, 104, -1, 0, 0, {ACT_FAILINIT} },
182 {RSP_ERROR, 108, 108, -1, 0, 0, {ACT_FAILINIT} },
184 {EV_TIMEOUT, 108, 108, -1, 105, 2, {ACT_SETDLE0,
187 {EV_TIMEOUT, 105, 105, -1, 103, 5, {0}, "Z\r"},
189 {RSP_ERROR, 102, 102, -1, 107, 5, {0}, "^GETPRE\r"},
190 {RSP_OK, 107, 107, -1, 0, 0, {ACT_CONFIGMODE} },
191 {RSP_ERROR, 107, 107, -1, 0, 0, {ACT_FAILINIT} },
192 {EV_TIMEOUT, 107, 107, -1, 0, 0, {ACT_FAILINIT} },
194 {RSP_ERROR, 103, 103, -1, 0, 0, {ACT_FAILINIT} },
195 {EV_TIMEOUT, 103, 103, -1, 0, 0, {ACT_FAILINIT} },
197 {RSP_STRING, 120, 120, -1, 121, -1, {ACT_SETVER} },
199 {EV_TIMEOUT, 120, 121, -1, 0, 0, {ACT_FAILVER,
201 {RSP_ERROR, 120, 121, -1, 0, 0, {ACT_FAILVER,
203 {RSP_OK, 121, 121, -1, 0, 0, {ACT_GOTVER,
207 {RSP_INIT, 0, 0, SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"},
208 {RSP_OK, 201, 201, -1, 202, -1},
209 {RSP_ZDLE, 202, 202, 0, 0, 0, {ACT_DLE0} },
210 {RSP_NODEV, 200, 249, -1, 0, 0, {ACT_FAKEDLE0} },
211 {RSP_ERROR, 200, 249, -1, 0, 0, {ACT_FAILDLE0} },
212 {EV_TIMEOUT, 200, 249, -1, 0, 0, {ACT_FAILDLE0} },
215 {RSP_INIT, 0, 0, SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"},
216 {RSP_OK, 251, 251, -1, 252, -1},
217 {RSP_ZDLE, 252, 252, 1, 0, 0, {ACT_DLE1} },
218 {RSP_ERROR, 250, 299, -1, 0, 0, {ACT_FAILDLE1} },
219 {EV_TIMEOUT, 250, 299, -1, 0, 0, {ACT_FAILDLE1} },
222 {RSP_RING, -1, -1, -1, -1, -1, {ACT_RING} },
225 {RSP_INIT, 0, 0, SEQ_CID, 301, 5, {0}, "^SGCI?\r"},
226 {RSP_OK, 301, 301, -1, 302, -1},
227 {RSP_ZGCI, 302, 302, -1, 0, 0, {ACT_CID} },
228 {RSP_ERROR, 301, 349, -1, 0, 0, {ACT_FAILCID} },
229 {EV_TIMEOUT, 301, 349, -1, 0, 0, {ACT_FAILCID} },
232 {RSP_INIT, 0, 0, SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"},
233 {RSP_OK, 150, 150, -1, 0, 0, {ACT_CMODESET} },
234 {RSP_ERROR, 150, 150, -1, 0, 0, {ACT_FAILCMODE} },
235 {EV_TIMEOUT, 150, 150, -1, 0, 0, {ACT_FAILCMODE} },
238 {RSP_INIT, 0, 0, SEQ_UMMODE, 160, 5, {0}, "Z\r"},
239 {RSP_OK, 160, 160, -1, 0, 0, {ACT_UMODESET} },
240 {RSP_ERROR, 160, 160, -1, 0, 0, {ACT_FAILUMODE} },
241 {EV_TIMEOUT, 160, 160, -1, 0, 0, {ACT_FAILUMODE} },
243 /* abort getting cid */
244 {RSP_INIT, 0, 0, SEQ_NOCID, 0, 0, {ACT_ABORTCID} },
247 {RSP_INIT, 0, 0, SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"},
248 {RSP_OK, 504, 504, -1, 0, 0, {ACT_SDOWN} },
249 {RSP_ERROR, 501, 599, -1, 0, 0, {ACT_FAILSDOWN} },
250 {EV_TIMEOUT, 501, 599, -1, 0, 0, {ACT_FAILSDOWN} },
251 {RSP_NODEV, 501, 599, -1, 0, 0, {ACT_FAKESDOWN} },
253 {EV_PROC_CIDMODE, -1, -1, -1, -1, -1, {ACT_PROC_CIDMODE} },
254 {EV_IF_LOCK, -1, -1, -1, -1, -1, {ACT_IF_LOCK} },
255 {EV_IF_VER, -1, -1, -1, -1, -1, {ACT_IF_VER} },
256 {EV_START, -1, -1, -1, -1, -1, {ACT_START} },
257 {EV_STOP, -1, -1, -1, -1, -1, {ACT_STOP} },
258 {EV_SHUTDOWN, -1, -1, -1, -1, -1, {ACT_SHUTDOWN} },
261 {RSP_ERROR, -1, -1, -1, -1, -1, {ACT_ERROR} },
262 {RSP_ZCFGT, -1, -1, -1, -1, -1, {ACT_DEBUG} },
263 {RSP_ZCFG, -1, -1, -1, -1, -1, {ACT_DEBUG} },
264 {RSP_ZLOG, -1, -1, -1, -1, -1, {ACT_DEBUG} },
265 {RSP_ZMWI, -1, -1, -1, -1, -1, {ACT_DEBUG} },
266 {RSP_ZABINFO, -1, -1, -1, -1, -1, {ACT_DEBUG} },
267 {RSP_ZSMLSTCHG, -1, -1, -1, -1, -1, {ACT_DEBUG} },
269 {RSP_ZCAU, -1, -1, -1, -1, -1, {ACT_ZCAU} },
270 {RSP_NONE, -1, -1, -1, -1, -1, {ACT_DEBUG} },
271 {RSP_ANY, -1, -1, -1, -1, -1, {ACT_WARN} },
275 /* 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring,
276 * 400: hup, 750: accepted icall */
277 struct reply_t gigaset_tab_cid[] =
279 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout,
283 {EV_DIAL, -1, -1, -1, -1, -1, {ACT_DIAL} },
284 {RSP_INIT, 0, 0, SEQ_DIAL, 601, 5, {ACT_CMD+AT_BC} },
285 {RSP_OK, 601, 601, -1, 603, 5, {ACT_CMD+AT_PROTO} },
286 {RSP_OK, 603, 603, -1, 604, 5, {ACT_CMD+AT_TYPE} },
287 {RSP_OK, 604, 604, -1, 605, 5, {ACT_CMD+AT_MSN} },
288 {RSP_NULL, 605, 605, -1, 606, 5, {ACT_CMD+AT_CLIP} },
289 {RSP_OK, 605, 605, -1, 606, 5, {ACT_CMD+AT_CLIP} },
290 {RSP_NULL, 606, 606, -1, 607, 5, {ACT_CMD+AT_ISO} },
291 {RSP_OK, 606, 606, -1, 607, 5, {ACT_CMD+AT_ISO} },
292 {RSP_OK, 607, 607, -1, 608, 5, {0}, "+VLS=17\r"},
293 {RSP_OK, 608, 608, -1, 609, -1},
294 {RSP_ZSAU, 609, 609, ZSAU_PROCEEDING, 610, 5, {ACT_CMD+AT_DIAL} },
295 {RSP_OK, 610, 610, -1, 650, 0, {ACT_DIALING} },
297 {RSP_ERROR, 601, 610, -1, 0, 0, {ACT_ABORTDIAL} },
298 {EV_TIMEOUT, 601, 610, -1, 0, 0, {ACT_ABORTDIAL} },
300 /* optional dialing responses */
301 {EV_BC_OPEN, 650, 650, -1, 651, -1},
302 {RSP_ZVLS, 609, 651, 17, -1, -1, {ACT_DEBUG} },
303 {RSP_ZCTP, 610, 651, -1, -1, -1, {ACT_DEBUG} },
304 {RSP_ZCPN, 610, 651, -1, -1, -1, {ACT_DEBUG} },
305 {RSP_ZSAU, 650, 651, ZSAU_CALL_DELIVERED, -1, -1, {ACT_DEBUG} },
308 {RSP_ZSAU, 650, 650, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT} },
309 {RSP_ZSAU, 651, 651, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT,
311 {RSP_ZSAU, 750, 750, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT} },
312 {RSP_ZSAU, 751, 751, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT,
314 {EV_BC_OPEN, 800, 800, -1, 800, -1, {ACT_NOTIFY_BC_UP} },
317 {RSP_ZSAU, 650, 651, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT} },
318 {RSP_ZSAU, 750, 751, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP} },
319 {RSP_ZSAU, 800, 800, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP} },
322 {EV_HUP, -1, -1, -1, -1, -1, {ACT_HUP} },
323 {RSP_INIT, -1, -1, SEQ_HUP, 401, 5, {0}, "+VLS=0\r"},
324 {RSP_OK, 401, 401, -1, 402, 5},
325 {RSP_ZVLS, 402, 402, 0, 403, 5},
326 {RSP_ZSAU, 403, 403, ZSAU_DISCONNECT_REQ, -1, -1, {ACT_DEBUG} },
327 {RSP_ZSAU, 403, 403, ZSAU_NULL, 0, 0, {ACT_DISCONNECT} },
328 {RSP_NODEV, 401, 403, -1, 0, 0, {ACT_FAKEHUP} },
329 {RSP_ERROR, 401, 401, -1, 0, 0, {ACT_ABORTHUP} },
330 {EV_TIMEOUT, 401, 403, -1, 0, 0, {ACT_ABORTHUP} },
332 {EV_BC_CLOSED, 0, 0, -1, 0, -1, {ACT_NOTIFY_BC_DOWN} },
335 {RSP_ZBC, 700, 700, -1, -1, -1, {0} },
336 {RSP_ZHLC, 700, 700, -1, -1, -1, {0} },
337 {RSP_NMBR, 700, 700, -1, -1, -1, {0} },
338 {RSP_ZCPN, 700, 700, -1, -1, -1, {0} },
339 {RSP_ZCTP, 700, 700, -1, -1, -1, {0} },
340 {EV_TIMEOUT, 700, 700, -1, 720, 720, {ACT_ICALL} },
341 {EV_BC_CLOSED, 720, 720, -1, 0, -1, {ACT_NOTIFY_BC_DOWN} },
344 {EV_ACCEPT, -1, -1, -1, -1, -1, {ACT_ACCEPT} },
345 {RSP_INIT, 720, 720, SEQ_ACCEPT, 721, 5, {ACT_CMD+AT_PROTO} },
346 {RSP_OK, 721, 721, -1, 722, 5, {ACT_CMD+AT_ISO} },
347 {RSP_OK, 722, 722, -1, 723, 5, {0}, "+VLS=17\r"},
348 {RSP_OK, 723, 723, -1, 724, 5, {0} },
349 {RSP_ZVLS, 724, 724, 17, 750, 50, {ACT_ACCEPTED} },
350 {RSP_ERROR, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT} },
351 {EV_TIMEOUT, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT} },
352 {RSP_ZSAU, 700, 729, ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT} },
353 {RSP_ZSAU, 700, 729, ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT} },
354 {RSP_ZSAU, 700, 729, ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT} },
356 {EV_BC_OPEN, 750, 750, -1, 751, -1},
357 {EV_TIMEOUT, 750, 751, -1, 0, 0, {ACT_CONNTIMEOUT} },
359 /* B channel closed (general case) */
360 {EV_BC_CLOSED, -1, -1, -1, -1, -1, {ACT_NOTIFY_BC_DOWN} },
363 {RSP_ZCON, -1, -1, -1, -1, -1, {ACT_DEBUG} },
364 {RSP_ZCCR, -1, -1, -1, -1, -1, {ACT_DEBUG} },
365 {RSP_ZAOC, -1, -1, -1, -1, -1, {ACT_DEBUG} },
366 {RSP_ZCSTR, -1, -1, -1, -1, -1, {ACT_DEBUG} },
368 {RSP_ZCAU, -1, -1, -1, -1, -1, {ACT_ZCAU} },
369 {RSP_NONE, -1, -1, -1, -1, -1, {ACT_DEBUG} },
370 {RSP_ANY, -1, -1, -1, -1, -1, {ACT_WARN} },
375 static const struct resp_type_t {
376 unsigned char *response;
381 {"OK", RSP_OK, RT_NOTHING},
382 {"ERROR", RSP_ERROR, RT_NOTHING},
383 {"ZSAU", RSP_ZSAU, RT_ZSAU},
384 {"ZCAU", RSP_ZCAU, RT_ZCAU},
385 {"RING", RSP_RING, RT_RING},
386 {"ZGCI", RSP_ZGCI, RT_NUMBER},
387 {"ZVLS", RSP_ZVLS, RT_NUMBER},
388 {"ZCTP", RSP_ZCTP, RT_NUMBER},
389 {"ZDLE", RSP_ZDLE, RT_NUMBER},
390 {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
391 {"ZCCR", RSP_ZCCR, RT_NUMBER},
392 {"ZMWI", RSP_ZMWI, RT_NUMBER},
393 {"ZHLC", RSP_ZHLC, RT_STRING},
394 {"ZBC", RSP_ZBC, RT_STRING},
395 {"NMBR", RSP_NMBR, RT_STRING},
396 {"ZCPN", RSP_ZCPN, RT_STRING},
397 {"ZCON", RSP_ZCON, RT_STRING},
398 {"ZAOC", RSP_ZAOC, RT_STRING},
399 {"ZCSTR", RSP_ZCSTR, RT_STRING},
400 {"ZCFG", RSP_ZCFG, RT_HEX},
401 {"ZLOG", RSP_ZLOG, RT_NOTHING},
402 {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
403 {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
407 static const struct zsau_resp_t {
412 {"OUTGOING_CALL_PROCEEDING", ZSAU_OUTGOING_CALL_PROCEEDING},
413 {"CALL_DELIVERED", ZSAU_CALL_DELIVERED},
414 {"ACTIVE", ZSAU_ACTIVE},
415 {"DISCONNECT_IND", ZSAU_DISCONNECT_IND},
417 {"DISCONNECT_REQ", ZSAU_DISCONNECT_REQ},
422 * Get integer from char-pointer
424 static int isdn_getnum(char *p)
428 gig_dbg(DEBUG_EVENT, "string: %s", p);
430 while (*p >= '0' && *p <= '9')
431 v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
433 v = -1; /* invalid Character */
438 * Get integer from char-pointer
440 static int isdn_gethex(char *p)
445 gig_dbg(DEBUG_EVENT, "string: %s", p);
451 if (v > (INT_MAX - 15) / 16)
454 if (c >= '0' && c <= '9')
456 else if (c >= 'a' && c <= 'f')
458 else if (c >= 'A' && c <= 'F')
468 /* retrieve CID from parsed response
469 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
471 static int cid_of_response(char *s)
476 return 0; /* no CID separator */
477 cid = isdn_getnum(s);
479 return 0; /* CID not numeric */
480 if (cid < 1 || cid > 65535)
481 return -1; /* CID out of range */
486 * gigaset_handle_modem_response() - process received modem response
487 * @cs: device descriptor structure.
489 * Called by asyncdata/isocdata if a block of data received from the
490 * device must be processed as a modem command response. The data is
491 * already in the cs structure.
493 void gigaset_handle_modem_response(struct cardstate *cs)
495 unsigned char *argv[MAX_REC_PARAMS + 1];
498 const struct resp_type_t *rt;
499 const struct zsau_resp_t *zr;
502 unsigned next, tail, head;
503 struct event_t *event;
513 /* ignore additional LFs/CRs (M10x config mode or cx100) */
514 gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
517 cs->respdata[len] = 0;
518 argv[0] = cs->respdata;
520 if (cs->at_state.getstring) {
521 /* getstring only allowed without cid at the moment */
522 cs->at_state.getstring = 0;
527 for (i = 0; i < len; i++)
528 switch (cs->respdata[i]) {
532 if (params > MAX_REC_PARAMS) {
534 "too many parameters in response\n");
535 /* need last parameter (might be CID) */
538 argv[params++] = cs->respdata + i + 1;
542 cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
544 gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
549 for (j = 1; j < params; ++j)
552 gig_dbg(DEBUG_EVENT, "CMD received: %s", argv[0]);
555 gig_dbg(DEBUG_EVENT, "CID: %s", argv[params]);
557 gig_dbg(DEBUG_EVENT, "available params: %d", params - 1);
558 for (j = 1; j < params; j++)
559 gig_dbg(DEBUG_EVENT, "param %d: %s", j, argv[j]);
562 spin_lock_irqsave(&cs->ev_lock, flags);
568 while (curarg < params) {
569 next = (tail + 1) % MAX_EVENTS;
570 if (unlikely(next == head)) {
571 dev_err(cs->dev, "event queue full\n");
575 event = cs->events + tail;
576 event->at_state = NULL;
583 resp_code = RSP_STRING;
584 param_type = RT_STRING;
586 for (rt = resp_type; rt->response; ++rt)
587 if (!strcmp(argv[curarg], rt->response))
591 event->type = RSP_UNKNOWN;
593 "unknown modem response: %s\n",
598 resp_code = rt->resp_code;
599 param_type = rt->type;
603 event->type = resp_code;
605 switch (param_type) {
611 "received RING without CID!\n");
612 event->type = RSP_INVAL;
616 event->parameter = cid;
621 if (curarg >= params) {
622 event->parameter = ZSAU_NONE;
625 for (zr = zsau_resp; zr->str; ++zr)
626 if (!strcmp(argv[curarg], zr->str))
628 event->parameter = zr->code;
631 "%s: unknown parameter %s after ZSAU\n",
632 __func__, argv[curarg]);
636 if (curarg < params) {
637 event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
639 dev_err(cs->dev, "out of memory\n");
642 gig_dbg(DEBUG_EVENT, "string==%s",
643 event->ptr ? (char *) event->ptr : "NULL");
646 event->parameter = -1;
647 if (curarg + 1 < params) {
648 i = isdn_gethex(argv[curarg]);
649 j = isdn_gethex(argv[curarg + 1]);
650 if (i >= 0 && i < 256 && j >= 0 && j < 256)
651 event->parameter = (unsigned) i << 8
659 if (curarg < params) {
660 if (param_type == RT_HEX)
662 isdn_gethex(argv[curarg]);
665 isdn_getnum(argv[curarg]);
668 event->parameter = -1;
669 gig_dbg(DEBUG_EVENT, "parameter==%d", event->parameter);
673 if (resp_code == RSP_ZDLE)
674 cs->dle = event->parameter;
681 spin_unlock_irqrestore(&cs->ev_lock, flags);
683 if (curarg != params)
685 "invalid number of processed parameters: %d/%d",
688 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
691 * process closing of connection associated with given AT state structure
693 static void disconnect(struct at_state_t **at_state_p)
696 struct bc_state *bcs = (*at_state_p)->bcs;
697 struct cardstate *cs = (*at_state_p)->cs;
699 spin_lock_irqsave(&cs->lock, flags);
700 ++(*at_state_p)->seq_index;
702 /* revert to selected idle mode */
704 cs->at_state.pending_commands |= PC_UMMODE;
705 gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
706 cs->commands_pending = 1;
708 spin_unlock_irqrestore(&cs->lock, flags);
711 /* B channel assigned: invoke hardware specific handler */
712 cs->ops->close_bchannel(bcs);
714 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
715 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
716 gigaset_isdn_hupD(bcs);
719 /* no B channel assigned: just deallocate */
720 spin_lock_irqsave(&cs->lock, flags);
721 list_del(&(*at_state_p)->list);
724 spin_unlock_irqrestore(&cs->lock, flags);
729 * get a free AT state structure: either one of those associated with the
730 * B channels of the Gigaset device, or if none of those is available,
731 * a newly allocated one with bcs=NULL
732 * The structure should be freed by calling disconnect() after use.
734 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
736 /* cids: >0: siemens-cid
738 -1: no cid assigned yet
743 struct at_state_t *ret;
745 for (i = 0; i < cs->channels; ++i)
746 if (gigaset_get_channel(cs->bcs + i)) {
747 ret = &cs->bcs[i].at_state;
752 spin_lock_irqsave(&cs->lock, flags);
753 ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
755 gigaset_at_init(ret, NULL, cs, cid);
756 list_add(&ret->list, &cs->temp_at_states);
758 spin_unlock_irqrestore(&cs->lock, flags);
762 static void init_failed(struct cardstate *cs, int mode)
765 struct at_state_t *at_state;
767 cs->at_state.pending_commands &= ~PC_INIT;
769 cs->mstate = MS_UNINITIALIZED;
770 gigaset_free_channels(cs);
771 for (i = 0; i < cs->channels; ++i) {
772 at_state = &cs->bcs[i].at_state;
773 if (at_state->pending_commands & PC_CID) {
774 at_state->pending_commands &= ~PC_CID;
775 at_state->pending_commands |= PC_NOCID;
776 cs->commands_pending = 1;
781 static void schedule_init(struct cardstate *cs, int state)
783 if (cs->at_state.pending_commands & PC_INIT) {
784 gig_dbg(DEBUG_EVENT, "not scheduling PC_INIT again");
788 cs->mode = M_UNKNOWN;
789 gigaset_block_channels(cs);
790 cs->at_state.pending_commands |= PC_INIT;
791 gig_dbg(DEBUG_EVENT, "Scheduling PC_INIT");
792 cs->commands_pending = 1;
795 /* Add "AT" to a command, add the cid, dle encode it, send the result to the
797 static void send_command(struct cardstate *cs, const char *cmd, int cid,
798 int dle, gfp_t kmallocflags)
800 size_t cmdlen, buflen;
801 char *cmdpos, *cmdbuf, *cmdtail;
803 cmdlen = strlen(cmd);
804 buflen = 11 + cmdlen;
805 if (unlikely(buflen <= cmdlen)) {
806 dev_err(cs->dev, "integer overflow in buflen\n");
810 cmdbuf = kmalloc(buflen, kmallocflags);
811 if (unlikely(!cmdbuf)) {
812 dev_err(cs->dev, "out of memory\n");
817 cmdtail = cmdpos + cmdlen;
818 memcpy(cmdpos, cmd, cmdlen);
820 if (cid > 0 && cid <= 65535) {
822 *--cmdpos = '0' + cid % 10;
840 cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
844 static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
846 struct at_state_t *at_state;
851 return &cs->at_state;
853 for (i = 0; i < cs->channels; ++i)
854 if (cid == cs->bcs[i].at_state.cid)
855 return &cs->bcs[i].at_state;
857 spin_lock_irqsave(&cs->lock, flags);
859 list_for_each_entry(at_state, &cs->temp_at_states, list)
860 if (cid == at_state->cid) {
861 spin_unlock_irqrestore(&cs->lock, flags);
865 spin_unlock_irqrestore(&cs->lock, flags);
870 static void bchannel_down(struct bc_state *bcs)
872 if (bcs->chstate & CHS_B_UP) {
873 bcs->chstate &= ~CHS_B_UP;
874 gigaset_isdn_hupB(bcs);
877 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
878 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
879 gigaset_isdn_hupD(bcs);
882 gigaset_free_channel(bcs);
884 gigaset_bcs_reinit(bcs);
887 static void bchannel_up(struct bc_state *bcs)
889 if (bcs->chstate & CHS_B_UP) {
890 dev_notice(bcs->cs->dev, "%s: B channel already up\n",
895 bcs->chstate |= CHS_B_UP;
896 gigaset_isdn_connB(bcs);
899 static void start_dial(struct at_state_t *at_state, void *data,
902 struct bc_state *bcs = at_state->bcs;
903 struct cardstate *cs = at_state->cs;
904 char **commands = data;
908 bcs->chstate |= CHS_NOTIFY_LL;
910 spin_lock_irqsave(&cs->lock, flags);
911 if (at_state->seq_index != seq_index) {
912 spin_unlock_irqrestore(&cs->lock, flags);
915 spin_unlock_irqrestore(&cs->lock, flags);
917 for (i = 0; i < AT_NUM; ++i) {
918 kfree(bcs->commands[i]);
919 bcs->commands[i] = commands[i];
922 at_state->pending_commands |= PC_CID;
923 gig_dbg(DEBUG_EVENT, "Scheduling PC_CID");
924 cs->commands_pending = 1;
928 for (i = 0; i < AT_NUM; ++i) {
932 at_state->pending_commands |= PC_NOCID;
933 gig_dbg(DEBUG_EVENT, "Scheduling PC_NOCID");
934 cs->commands_pending = 1;
938 static void start_accept(struct at_state_t *at_state)
940 struct cardstate *cs = at_state->cs;
941 struct bc_state *bcs = at_state->bcs;
944 for (i = 0; i < AT_NUM; ++i) {
945 kfree(bcs->commands[i]);
946 bcs->commands[i] = NULL;
949 bcs->commands[AT_PROTO] = kmalloc(9, GFP_ATOMIC);
950 bcs->commands[AT_ISO] = kmalloc(9, GFP_ATOMIC);
951 if (!bcs->commands[AT_PROTO] || !bcs->commands[AT_ISO]) {
952 dev_err(at_state->cs->dev, "out of memory\n");
954 at_state->pending_commands |= PC_HUP;
955 gig_dbg(DEBUG_EVENT, "Scheduling PC_HUP");
956 cs->commands_pending = 1;
960 snprintf(bcs->commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2);
961 snprintf(bcs->commands[AT_ISO], 9, "^SISO=%u\r", bcs->channel + 1);
963 at_state->pending_commands |= PC_ACCEPT;
964 gig_dbg(DEBUG_EVENT, "Scheduling PC_ACCEPT");
965 cs->commands_pending = 1;
968 static void do_start(struct cardstate *cs)
970 gigaset_free_channels(cs);
972 if (cs->mstate != MS_LOCKED)
973 schedule_init(cs, MS_INIT);
976 gigaset_isdn_start(cs);
979 wake_up(&cs->waitqueue);
982 static void finish_shutdown(struct cardstate *cs)
984 if (cs->mstate != MS_LOCKED) {
985 cs->mstate = MS_UNINITIALIZED;
986 cs->mode = M_UNKNOWN;
989 /* Tell the LL that the device is not available .. */
992 gigaset_isdn_stop(cs);
995 /* The rest is done by cleanup_cs () in user mode. */
997 cs->cmd_result = -ENODEV;
999 wake_up(&cs->waitqueue);
1002 static void do_shutdown(struct cardstate *cs)
1004 gigaset_block_channels(cs);
1006 if (cs->mstate == MS_READY) {
1007 cs->mstate = MS_SHUTDOWN;
1008 cs->at_state.pending_commands |= PC_SHUTDOWN;
1009 gig_dbg(DEBUG_EVENT, "Scheduling PC_SHUTDOWN");
1010 cs->commands_pending = 1;
1012 finish_shutdown(cs);
1015 static void do_stop(struct cardstate *cs)
1017 unsigned long flags;
1019 spin_lock_irqsave(&cs->lock, flags);
1021 spin_unlock_irqrestore(&cs->lock, flags);
1026 /* Entering cid mode or getting a cid failed:
1027 * try to initialize the device and try again.
1029 * channel >= 0: getting cid for the channel failed
1030 * channel < 0: entering cid mode failed
1032 * returns 0 on failure
1034 static int reinit_and_retry(struct cardstate *cs, int channel)
1038 if (--cs->retry_count <= 0)
1041 for (i = 0; i < cs->channels; ++i)
1042 if (cs->bcs[i].at_state.cid > 0)
1047 "Could not enter cid mode. Reinit device and try again.\n");
1050 "Could not get a call id. Reinit device and try again.\n");
1051 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1053 schedule_init(cs, MS_INIT);
1057 static int at_state_invalid(struct cardstate *cs,
1058 struct at_state_t *test_ptr)
1060 unsigned long flags;
1062 struct at_state_t *at_state;
1065 spin_lock_irqsave(&cs->lock, flags);
1067 if (test_ptr == &cs->at_state)
1070 list_for_each_entry(at_state, &cs->temp_at_states, list)
1071 if (at_state == test_ptr)
1074 for (channel = 0; channel < cs->channels; ++channel)
1075 if (&cs->bcs[channel].at_state == test_ptr)
1080 spin_unlock_irqrestore(&cs->lock, flags);
1084 static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1085 struct at_state_t **p_at_state)
1088 struct at_state_t *at_state = *p_at_state;
1090 retval = gigaset_isdn_icall(at_state);
1095 dev_err(cs->dev, "internal error: disposition=%d\n", retval);
1096 /* --v-- fall through --v-- */
1100 * Device doc says that would reject the call.
1101 * In fact it doesn't.
1103 at_state->pending_commands |= PC_HUP;
1104 cs->commands_pending = 1;
1109 static int do_lock(struct cardstate *cs)
1114 switch (cs->mstate) {
1115 case MS_UNINITIALIZED:
1117 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1118 cs->at_state.pending_commands)
1121 for (i = 0; i < cs->channels; ++i)
1122 if (cs->bcs[i].at_state.pending_commands)
1125 if (!gigaset_get_channels(cs))
1136 cs->mstate = MS_LOCKED;
1137 cs->mode = M_UNKNOWN;
1142 static int do_unlock(struct cardstate *cs)
1144 if (cs->mstate != MS_LOCKED)
1147 cs->mstate = MS_UNINITIALIZED;
1148 cs->mode = M_UNKNOWN;
1149 gigaset_free_channels(cs);
1151 schedule_init(cs, MS_INIT);
1156 static void do_action(int action, struct cardstate *cs,
1157 struct bc_state *bcs,
1158 struct at_state_t **p_at_state, char **pp_command,
1159 int *p_genresp, int *p_resp_code,
1162 struct at_state_t *at_state = *p_at_state;
1163 struct at_state_t *at_state2;
1164 unsigned long flags;
1168 unsigned char *s, *e;
1176 at_state->waiting = 1;
1179 cs->at_state.pending_commands &= ~PC_INIT;
1180 cs->cur_at_seq = SEQ_NONE;
1181 cs->mode = M_UNIMODEM;
1182 spin_lock_irqsave(&cs->lock, flags);
1184 spin_unlock_irqrestore(&cs->lock, flags);
1185 gigaset_free_channels(cs);
1186 cs->mstate = MS_READY;
1189 spin_unlock_irqrestore(&cs->lock, flags);
1190 cs->at_state.pending_commands |= PC_CIDMODE;
1191 gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
1192 cs->commands_pending = 1;
1195 dev_warn(cs->dev, "Could not initialize the device.\n");
1197 init_failed(cs, M_UNKNOWN);
1198 cs->cur_at_seq = SEQ_NONE;
1200 case ACT_CONFIGMODE:
1201 init_failed(cs, M_CONFIG);
1202 cs->cur_at_seq = SEQ_NONE;
1206 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1207 cs->inbuf[0].inputstate &=
1208 ~(INS_command | INS_DLE_command);
1212 cs->inbuf[0].inputstate =
1213 (cs->inbuf[0].inputstate & ~INS_DLE_command)
1217 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1218 gigaset_free_channels(cs);
1219 cs->mstate = MS_READY;
1222 cs->cur_at_seq = SEQ_NONE;
1225 cs->mode = M_UNIMODEM;
1226 cs->cur_at_seq = SEQ_NONE;
1229 cs->cur_at_seq = SEQ_NONE;
1230 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1231 init_failed(cs, M_UNKNOWN);
1234 if (!reinit_and_retry(cs, -1))
1235 schedule_init(cs, MS_RECOVER);
1238 cs->cur_at_seq = SEQ_NONE;
1239 schedule_init(cs, MS_RECOVER);
1242 /* send "+++" (hangup in unimodem mode) */
1244 cs->ops->write_cmd(cs, "+++", 3, NULL);
1247 /* get fresh AT state structure for new CID */
1248 at_state2 = get_free_channel(cs, ev->parameter);
1251 "RING ignored: could not allocate channel structure\n");
1255 /* initialize AT state structure
1256 * note that bcs may be NULL if no B channel is free
1258 at_state2->ConState = 700;
1259 for (i = 0; i < STR_NUM; ++i) {
1260 kfree(at_state2->str_var[i]);
1261 at_state2->str_var[i] = NULL;
1263 at_state2->int_var[VAR_ZCTP] = -1;
1265 spin_lock_irqsave(&cs->lock, flags);
1266 at_state2->timer_expires = RING_TIMEOUT;
1267 at_state2->timer_active = 1;
1268 spin_unlock_irqrestore(&cs->lock, flags);
1271 handle_icall(cs, bcs, p_at_state);
1274 dev_warn(cs->dev, "Could not shut down the device.\n");
1278 cs->cur_at_seq = SEQ_NONE;
1279 finish_shutdown(cs);
1282 if (cs->onechannel) {
1283 at_state->pending_commands |= PC_DLE1;
1284 cs->commands_pending = 1;
1287 bcs->chstate |= CHS_D_UP;
1288 gigaset_isdn_connD(bcs);
1289 cs->ops->init_bchannel(bcs);
1292 cs->cur_at_seq = SEQ_NONE;
1293 bcs = cs->bcs + cs->curchannel;
1295 bcs->chstate |= CHS_D_UP;
1296 gigaset_isdn_connD(bcs);
1297 cs->ops->init_bchannel(bcs);
1300 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1302 case ACT_DISCONNECT:
1303 cs->cur_at_seq = SEQ_NONE;
1305 if (bcs && cs->onechannel && cs->dle) {
1306 /* Check for other open channels not needed:
1307 * DLE only used for M10x with one B channel.
1309 at_state->pending_commands |= PC_DLE0;
1310 cs->commands_pending = 1;
1312 disconnect(p_at_state);
1315 at_state->int_var[VAR_ZDLE] = 0;
1319 cs->cur_at_seq = SEQ_NONE;
1320 at_state2 = &cs->bcs[cs->curchannel].at_state;
1321 disconnect(&at_state2);
1324 cs->cur_at_seq = SEQ_NONE;
1325 dev_warn(cs->dev, "Could not hang up.\n");
1327 if (bcs && cs->onechannel)
1328 at_state->pending_commands |= PC_DLE0;
1330 disconnect(p_at_state);
1331 schedule_init(cs, MS_RECOVER);
1334 cs->cur_at_seq = SEQ_NONE;
1335 dev_warn(cs->dev, "Could not leave DLE mode.\n");
1336 at_state2 = &cs->bcs[cs->curchannel].at_state;
1337 disconnect(&at_state2);
1338 schedule_init(cs, MS_RECOVER);
1341 cs->cur_at_seq = SEQ_NONE;
1343 "Could not enter DLE mode. Trying to hang up.\n");
1344 channel = cs->curchannel;
1345 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1346 cs->commands_pending = 1;
1349 case ACT_CID: /* got cid; start dialing */
1350 cs->cur_at_seq = SEQ_NONE;
1351 channel = cs->curchannel;
1352 if (ev->parameter > 0 && ev->parameter <= 65535) {
1353 cs->bcs[channel].at_state.cid = ev->parameter;
1354 cs->bcs[channel].at_state.pending_commands |=
1356 cs->commands_pending = 1;
1361 cs->cur_at_seq = SEQ_NONE;
1362 channel = cs->curchannel;
1363 if (!reinit_and_retry(cs, channel)) {
1365 "Could not get a call ID. Cannot dial.\n");
1366 at_state2 = &cs->bcs[channel].at_state;
1367 disconnect(&at_state2);
1371 cs->cur_at_seq = SEQ_NONE;
1372 at_state2 = &cs->bcs[cs->curchannel].at_state;
1373 disconnect(&at_state2);
1378 cs->cur_at_seq = SEQ_NONE;
1381 case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL procssng */
1382 disconnect(p_at_state);
1385 case ACT_ABORTDIAL: /* error/timeout during dial preparation */
1386 cs->cur_at_seq = SEQ_NONE;
1387 at_state->pending_commands |= PC_HUP;
1388 cs->commands_pending = 1;
1391 case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
1392 case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
1393 case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
1394 at_state->pending_commands |= PC_HUP;
1395 cs->commands_pending = 1;
1397 case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1398 are not handled properly anymore */
1399 at_state->getstring = 1;
1404 *p_resp_code = RSP_ERROR;
1409 if (!strcmp(s, "OK")) {
1411 *p_resp_code = RSP_ERROR;
1415 for (i = 0; i < 4; ++i) {
1416 val = simple_strtoul(s, (char **) &e, 10);
1417 if (val > INT_MAX || e == s)
1422 } else if (*e != '.')
1430 *p_resp_code = RSP_ERROR;
1433 /*at_state->getstring = 1;*/
1437 if (cs->gotfwver == 0) {
1439 gig_dbg(DEBUG_EVENT,
1440 "firmware version %02d.%03d.%02d.%02d",
1441 cs->fwver[0], cs->fwver[1],
1442 cs->fwver[2], cs->fwver[3]);
1448 dev_err(cs->dev, "could not read firmware version.\n");
1451 gig_dbg(DEBUG_ANY, "%s: ERROR response in ConState %d",
1452 __func__, at_state->ConState);
1453 cs->cur_at_seq = SEQ_NONE;
1456 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1457 __func__, ev->type, at_state->ConState);
1460 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1461 __func__, ev->type, at_state->ConState);
1464 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1465 ev->parameter, at_state->ConState);
1468 /* events from the LL */
1470 start_dial(at_state, ev->ptr, ev->parameter);
1473 start_accept(at_state);
1476 at_state->pending_commands |= PC_HUP;
1477 gig_dbg(DEBUG_EVENT, "Scheduling PC_HUP");
1478 cs->commands_pending = 1;
1481 /* hotplug events */
1489 /* events from the interface */
1491 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1493 wake_up(&cs->waitqueue);
1496 if (ev->parameter != 0)
1497 cs->cmd_result = -EINVAL;
1498 else if (cs->gotfwver != 1) {
1499 cs->cmd_result = -ENOENT;
1501 memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1505 wake_up(&cs->waitqueue);
1508 /* events from the proc file system */
1509 case ACT_PROC_CIDMODE:
1510 spin_lock_irqsave(&cs->lock, flags);
1511 if (ev->parameter != cs->cidmode) {
1512 cs->cidmode = ev->parameter;
1513 if (ev->parameter) {
1514 cs->at_state.pending_commands |= PC_CIDMODE;
1515 gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
1517 cs->at_state.pending_commands |= PC_UMMODE;
1518 gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
1520 cs->commands_pending = 1;
1522 spin_unlock_irqrestore(&cs->lock, flags);
1524 wake_up(&cs->waitqueue);
1527 /* events from the hardware drivers */
1528 case ACT_NOTIFY_BC_DOWN:
1531 case ACT_NOTIFY_BC_UP:
1540 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1541 *pp_command = at_state->bcs->commands[action - ACT_CMD];
1544 *p_resp_code = RSP_NULL;
1547 dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
1551 /* State machine to do the calling and hangup procedure */
1552 static void process_event(struct cardstate *cs, struct event_t *ev)
1554 struct bc_state *bcs;
1555 char *p_command = NULL;
1556 struct reply_t *rep;
1559 int resp_code = RSP_ERROR;
1561 struct at_state_t *at_state;
1564 unsigned long flags;
1567 at_state = at_state_from_cid(cs, ev->cid);
1569 gig_dbg(DEBUG_EVENT, "event %d for invalid cid %d",
1571 gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1576 at_state = ev->at_state;
1577 if (at_state_invalid(cs, at_state)) {
1578 gig_dbg(DEBUG_EVENT, "event for invalid at_state %p",
1584 gig_dbg(DEBUG_EVENT, "connection state %d, event %d",
1585 at_state->ConState, ev->type);
1587 bcs = at_state->bcs;
1588 sendcid = at_state->cid;
1590 /* Setting the pointer to the dial array */
1591 rep = at_state->replystruct;
1593 spin_lock_irqsave(&cs->lock, flags);
1594 if (ev->type == EV_TIMEOUT) {
1595 if (ev->parameter != at_state->timer_index
1596 || !at_state->timer_active) {
1597 ev->type = RSP_NONE; /* old timeout */
1598 gig_dbg(DEBUG_EVENT, "old timeout");
1599 } else if (!at_state->waiting)
1600 gig_dbg(DEBUG_EVENT, "timeout occurred");
1602 gig_dbg(DEBUG_EVENT, "stopped waiting");
1604 spin_unlock_irqrestore(&cs->lock, flags);
1606 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1607 or at_state->str_var[STR_XXXX], set it */
1608 if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1609 index = ev->type - RSP_VAR;
1610 at_state->int_var[index] = ev->parameter;
1611 } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1612 index = ev->type - RSP_STR;
1613 kfree(at_state->str_var[index]);
1614 at_state->str_var[index] = ev->ptr;
1615 ev->ptr = NULL; /* prevent process_events() from
1619 if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1620 at_state->getstring = 0;
1622 /* Search row in dial array which matches modem response and current
1625 rcode = rep->resp_code;
1626 if (rcode == RSP_LAST) {
1627 /* found nothing...*/
1628 dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1629 "resp_code %d in ConState %d!\n",
1630 __func__, ev->type, at_state->ConState);
1633 if ((rcode == RSP_ANY || rcode == ev->type)
1634 && ((int) at_state->ConState >= rep->min_ConState)
1635 && (rep->max_ConState < 0
1636 || (int) at_state->ConState <= rep->max_ConState)
1637 && (rep->parameter < 0 || rep->parameter == ev->parameter))
1641 p_command = rep->command;
1643 at_state->waiting = 0;
1644 for (curact = 0; curact < MAXACT; ++curact) {
1645 /* The row tells us what we should do ..
1647 do_action(rep->action[curact], cs, bcs, &at_state, &p_command,
1648 &genresp, &resp_code, ev);
1650 break; /* may be freed after disconnect */
1654 /* Jump to the next con-state regarding the array */
1655 if (rep->new_ConState >= 0)
1656 at_state->ConState = rep->new_ConState;
1659 spin_lock_irqsave(&cs->lock, flags);
1660 at_state->timer_expires = 0;
1661 at_state->timer_active = 0;
1662 spin_unlock_irqrestore(&cs->lock, flags);
1663 gigaset_add_event(cs, at_state, resp_code,
1666 /* Send command to modem if not NULL... */
1669 send_command(cs, p_command,
1673 gigaset_add_event(cs, at_state,
1678 spin_lock_irqsave(&cs->lock, flags);
1679 if (!rep->timeout) {
1680 at_state->timer_expires = 0;
1681 at_state->timer_active = 0;
1682 } else if (rep->timeout > 0) { /* new timeout */
1683 at_state->timer_expires = rep->timeout * 10;
1684 at_state->timer_active = 1;
1685 ++at_state->timer_index;
1687 spin_unlock_irqrestore(&cs->lock, flags);
1692 static void schedule_sequence(struct cardstate *cs,
1693 struct at_state_t *at_state, int sequence)
1695 cs->cur_at_seq = sequence;
1696 gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1699 static void process_command_flags(struct cardstate *cs)
1701 struct at_state_t *at_state = NULL;
1702 struct bc_state *bcs;
1705 unsigned long flags;
1707 cs->commands_pending = 0;
1709 if (cs->cur_at_seq) {
1710 gig_dbg(DEBUG_EVENT, "not searching scheduled commands: busy");
1714 gig_dbg(DEBUG_EVENT, "searching scheduled commands");
1716 sequence = SEQ_NONE;
1718 /* clear pending_commands and hangup channels on shutdown */
1719 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1720 cs->at_state.pending_commands &= ~PC_CIDMODE;
1721 for (i = 0; i < cs->channels; ++i) {
1723 at_state = &bcs->at_state;
1724 at_state->pending_commands &=
1725 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1726 if (at_state->cid > 0)
1727 at_state->pending_commands |= PC_HUP;
1728 if (at_state->pending_commands & PC_CID) {
1729 at_state->pending_commands |= PC_NOCID;
1730 at_state->pending_commands &= ~PC_CID;
1735 /* clear pending_commands and hangup channels on reset */
1736 if (cs->at_state.pending_commands & PC_INIT) {
1737 cs->at_state.pending_commands &= ~PC_CIDMODE;
1738 for (i = 0; i < cs->channels; ++i) {
1740 at_state = &bcs->at_state;
1741 at_state->pending_commands &=
1742 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1743 if (at_state->cid > 0)
1744 at_state->pending_commands |= PC_HUP;
1745 if (cs->mstate == MS_RECOVER) {
1746 if (at_state->pending_commands & PC_CID) {
1747 at_state->pending_commands |= PC_NOCID;
1748 at_state->pending_commands &= ~PC_CID;
1754 /* only switch back to unimodem mode if no commands are pending and
1755 * no channels are up */
1756 spin_lock_irqsave(&cs->lock, flags);
1757 if (cs->at_state.pending_commands == PC_UMMODE
1759 && list_empty(&cs->temp_at_states)
1760 && cs->mode == M_CID) {
1761 sequence = SEQ_UMMODE;
1762 at_state = &cs->at_state;
1763 for (i = 0; i < cs->channels; ++i) {
1765 if (bcs->at_state.pending_commands ||
1766 bcs->at_state.cid > 0) {
1767 sequence = SEQ_NONE;
1772 spin_unlock_irqrestore(&cs->lock, flags);
1773 cs->at_state.pending_commands &= ~PC_UMMODE;
1774 if (sequence != SEQ_NONE) {
1775 schedule_sequence(cs, at_state, sequence);
1779 for (i = 0; i < cs->channels; ++i) {
1781 if (bcs->at_state.pending_commands & PC_HUP) {
1782 bcs->at_state.pending_commands &= ~PC_HUP;
1783 if (bcs->at_state.pending_commands & PC_CID) {
1784 /* not yet dialing: PC_NOCID is sufficient */
1785 bcs->at_state.pending_commands |= PC_NOCID;
1786 bcs->at_state.pending_commands &= ~PC_CID;
1788 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1792 if (bcs->at_state.pending_commands & PC_NOCID) {
1793 bcs->at_state.pending_commands &= ~PC_NOCID;
1794 cs->curchannel = bcs->channel;
1795 schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1797 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1798 bcs->at_state.pending_commands &= ~PC_DLE0;
1799 cs->curchannel = bcs->channel;
1800 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1805 list_for_each_entry(at_state, &cs->temp_at_states, list)
1806 if (at_state->pending_commands & PC_HUP) {
1807 at_state->pending_commands &= ~PC_HUP;
1808 schedule_sequence(cs, at_state, SEQ_HUP);
1812 if (cs->at_state.pending_commands & PC_INIT) {
1813 cs->at_state.pending_commands &= ~PC_INIT;
1815 cs->inbuf->inputstate = INS_command;
1816 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1819 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1820 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1821 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1824 if (cs->at_state.pending_commands & PC_CIDMODE) {
1825 cs->at_state.pending_commands &= ~PC_CIDMODE;
1826 if (cs->mode == M_UNIMODEM) {
1827 cs->retry_count = 1;
1828 schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1833 for (i = 0; i < cs->channels; ++i) {
1835 if (bcs->at_state.pending_commands & PC_DLE1) {
1836 bcs->at_state.pending_commands &= ~PC_DLE1;
1837 cs->curchannel = bcs->channel;
1838 schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1841 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1842 bcs->at_state.pending_commands &= ~PC_ACCEPT;
1843 schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1846 if (bcs->at_state.pending_commands & PC_DIAL) {
1847 bcs->at_state.pending_commands &= ~PC_DIAL;
1848 schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1851 if (bcs->at_state.pending_commands & PC_CID) {
1854 cs->at_state.pending_commands |= PC_CIDMODE;
1855 gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
1856 cs->commands_pending = 1;
1858 #ifdef GIG_MAYINITONDIAL
1860 schedule_init(cs, MS_INIT);
1864 bcs->at_state.pending_commands &= ~PC_CID;
1865 cs->curchannel = bcs->channel;
1867 cs->retry_count = 2;
1869 cs->retry_count = 1;
1871 schedule_sequence(cs, &cs->at_state, SEQ_CID);
1877 static void process_events(struct cardstate *cs)
1880 unsigned head, tail;
1882 int check_flags = 0;
1884 unsigned long flags;
1886 spin_lock_irqsave(&cs->ev_lock, flags);
1889 for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1892 if (!check_flags && !cs->commands_pending)
1895 spin_unlock_irqrestore(&cs->ev_lock, flags);
1896 process_command_flags(cs);
1897 spin_lock_irqsave(&cs->ev_lock, flags);
1900 if (!cs->commands_pending)
1906 ev = cs->events + head;
1907 was_busy = cs->cur_at_seq != SEQ_NONE;
1908 spin_unlock_irqrestore(&cs->ev_lock, flags);
1909 process_event(cs, ev);
1910 spin_lock_irqsave(&cs->ev_lock, flags);
1913 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1916 head = (head + 1) % MAX_EVENTS;
1920 spin_unlock_irqrestore(&cs->ev_lock, flags);
1922 if (i == 2 * MAX_EVENTS) {
1924 "infinite loop in process_events; aborting.\n");
1928 /* tasklet scheduled on any event received from the Gigaset device
1930 * data ISDN controller state structure
1932 void gigaset_handle_event(unsigned long data)
1934 struct cardstate *cs = (struct cardstate *) data;
1936 /* handle incoming data on control/common channel */
1937 if (cs->inbuf->head != cs->inbuf->tail) {
1938 gig_dbg(DEBUG_INTR, "processing new data");
1939 cs->ops->handle_input(cs->inbuf);