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, 602, 5, {ACT_CMD+AT_HLC} },
286 {RSP_NULL, 602, 602, -1, 603, 5, {ACT_CMD+AT_PROTO} },
287 {RSP_OK, 602, 602, -1, 603, 5, {ACT_CMD+AT_PROTO} },
288 {RSP_OK, 603, 603, -1, 604, 5, {ACT_CMD+AT_TYPE} },
289 {RSP_OK, 604, 604, -1, 605, 5, {ACT_CMD+AT_MSN} },
290 {RSP_NULL, 605, 605, -1, 606, 5, {ACT_CMD+AT_CLIP} },
291 {RSP_OK, 605, 605, -1, 606, 5, {ACT_CMD+AT_CLIP} },
292 {RSP_NULL, 606, 606, -1, 607, 5, {ACT_CMD+AT_ISO} },
293 {RSP_OK, 606, 606, -1, 607, 5, {ACT_CMD+AT_ISO} },
294 {RSP_OK, 607, 607, -1, 608, 5, {0}, "+VLS=17\r"},
295 {RSP_OK, 608, 608, -1, 609, -1},
296 {RSP_ZSAU, 609, 609, ZSAU_PROCEEDING, 610, 5, {ACT_CMD+AT_DIAL} },
297 {RSP_OK, 610, 610, -1, 650, 0, {ACT_DIALING} },
299 {RSP_ERROR, 601, 610, -1, 0, 0, {ACT_ABORTDIAL} },
300 {EV_TIMEOUT, 601, 610, -1, 0, 0, {ACT_ABORTDIAL} },
302 /* optional dialing responses */
303 {EV_BC_OPEN, 650, 650, -1, 651, -1},
304 {RSP_ZVLS, 609, 651, 17, -1, -1, {ACT_DEBUG} },
305 {RSP_ZCTP, 610, 651, -1, -1, -1, {ACT_DEBUG} },
306 {RSP_ZCPN, 610, 651, -1, -1, -1, {ACT_DEBUG} },
307 {RSP_ZSAU, 650, 651, ZSAU_CALL_DELIVERED, -1, -1, {ACT_DEBUG} },
310 {RSP_ZSAU, 650, 650, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT} },
311 {RSP_ZSAU, 651, 651, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT,
313 {RSP_ZSAU, 750, 750, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT} },
314 {RSP_ZSAU, 751, 751, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT,
316 {EV_BC_OPEN, 800, 800, -1, 800, -1, {ACT_NOTIFY_BC_UP} },
319 {RSP_ZSAU, 650, 651, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT} },
320 {RSP_ZSAU, 750, 751, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP} },
321 {RSP_ZSAU, 800, 800, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP} },
324 {EV_HUP, -1, -1, -1, -1, -1, {ACT_HUP} },
325 {RSP_INIT, -1, -1, SEQ_HUP, 401, 5, {0}, "+VLS=0\r"},
326 {RSP_OK, 401, 401, -1, 402, 5},
327 {RSP_ZVLS, 402, 402, 0, 403, 5},
328 {RSP_ZSAU, 403, 403, ZSAU_DISCONNECT_REQ, -1, -1, {ACT_DEBUG} },
329 {RSP_ZSAU, 403, 403, ZSAU_NULL, 0, 0, {ACT_DISCONNECT} },
330 {RSP_NODEV, 401, 403, -1, 0, 0, {ACT_FAKEHUP} },
331 {RSP_ERROR, 401, 401, -1, 0, 0, {ACT_ABORTHUP} },
332 {EV_TIMEOUT, 401, 403, -1, 0, 0, {ACT_ABORTHUP} },
334 {EV_BC_CLOSED, 0, 0, -1, 0, -1, {ACT_NOTIFY_BC_DOWN} },
337 {RSP_ZBC, 700, 700, -1, -1, -1, {0} },
338 {RSP_ZHLC, 700, 700, -1, -1, -1, {0} },
339 {RSP_NMBR, 700, 700, -1, -1, -1, {0} },
340 {RSP_ZCPN, 700, 700, -1, -1, -1, {0} },
341 {RSP_ZCTP, 700, 700, -1, -1, -1, {0} },
342 {EV_TIMEOUT, 700, 700, -1, 720, 720, {ACT_ICALL} },
343 {EV_BC_CLOSED, 720, 720, -1, 0, -1, {ACT_NOTIFY_BC_DOWN} },
346 {EV_ACCEPT, -1, -1, -1, -1, -1, {ACT_ACCEPT} },
347 {RSP_INIT, 720, 720, SEQ_ACCEPT, 721, 5, {ACT_CMD+AT_PROTO} },
348 {RSP_OK, 721, 721, -1, 722, 5, {ACT_CMD+AT_ISO} },
349 {RSP_OK, 722, 722, -1, 723, 5, {0}, "+VLS=17\r"},
350 {RSP_OK, 723, 723, -1, 724, 5, {0} },
351 {RSP_ZVLS, 724, 724, 17, 750, 50, {ACT_ACCEPTED} },
352 {RSP_ERROR, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT} },
353 {EV_TIMEOUT, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT} },
354 {RSP_ZSAU, 700, 729, ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT} },
355 {RSP_ZSAU, 700, 729, ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT} },
356 {RSP_ZSAU, 700, 729, ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT} },
358 {EV_BC_OPEN, 750, 750, -1, 751, -1},
359 {EV_TIMEOUT, 750, 751, -1, 0, 0, {ACT_CONNTIMEOUT} },
361 /* B channel closed (general case) */
362 {EV_BC_CLOSED, -1, -1, -1, -1, -1, {ACT_NOTIFY_BC_DOWN} },
365 {RSP_ZCON, -1, -1, -1, -1, -1, {ACT_DEBUG} },
366 {RSP_ZCCR, -1, -1, -1, -1, -1, {ACT_DEBUG} },
367 {RSP_ZAOC, -1, -1, -1, -1, -1, {ACT_DEBUG} },
368 {RSP_ZCSTR, -1, -1, -1, -1, -1, {ACT_DEBUG} },
370 {RSP_ZCAU, -1, -1, -1, -1, -1, {ACT_ZCAU} },
371 {RSP_NONE, -1, -1, -1, -1, -1, {ACT_DEBUG} },
372 {RSP_ANY, -1, -1, -1, -1, -1, {ACT_WARN} },
377 static const struct resp_type_t {
378 unsigned char *response;
383 {"OK", RSP_OK, RT_NOTHING},
384 {"ERROR", RSP_ERROR, RT_NOTHING},
385 {"ZSAU", RSP_ZSAU, RT_ZSAU},
386 {"ZCAU", RSP_ZCAU, RT_ZCAU},
387 {"RING", RSP_RING, RT_RING},
388 {"ZGCI", RSP_ZGCI, RT_NUMBER},
389 {"ZVLS", RSP_ZVLS, RT_NUMBER},
390 {"ZCTP", RSP_ZCTP, RT_NUMBER},
391 {"ZDLE", RSP_ZDLE, RT_NUMBER},
392 {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
393 {"ZCCR", RSP_ZCCR, RT_NUMBER},
394 {"ZMWI", RSP_ZMWI, RT_NUMBER},
395 {"ZHLC", RSP_ZHLC, RT_STRING},
396 {"ZBC", RSP_ZBC, RT_STRING},
397 {"NMBR", RSP_NMBR, RT_STRING},
398 {"ZCPN", RSP_ZCPN, RT_STRING},
399 {"ZCON", RSP_ZCON, RT_STRING},
400 {"ZAOC", RSP_ZAOC, RT_STRING},
401 {"ZCSTR", RSP_ZCSTR, RT_STRING},
402 {"ZCFG", RSP_ZCFG, RT_HEX},
403 {"ZLOG", RSP_ZLOG, RT_NOTHING},
404 {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
405 {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
409 static const struct zsau_resp_t {
414 {"OUTGOING_CALL_PROCEEDING", ZSAU_OUTGOING_CALL_PROCEEDING},
415 {"CALL_DELIVERED", ZSAU_CALL_DELIVERED},
416 {"ACTIVE", ZSAU_ACTIVE},
417 {"DISCONNECT_IND", ZSAU_DISCONNECT_IND},
419 {"DISCONNECT_REQ", ZSAU_DISCONNECT_REQ},
424 * Get integer from char-pointer
426 static int isdn_getnum(char *p)
430 gig_dbg(DEBUG_EVENT, "string: %s", p);
432 while (*p >= '0' && *p <= '9')
433 v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
435 v = -1; /* invalid Character */
440 * Get integer from char-pointer
442 static int isdn_gethex(char *p)
447 gig_dbg(DEBUG_EVENT, "string: %s", p);
453 if (v > (INT_MAX - 15) / 16)
456 if (c >= '0' && c <= '9')
458 else if (c >= 'a' && c <= 'f')
460 else if (c >= 'A' && c <= 'F')
470 /* retrieve CID from parsed response
471 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
473 static int cid_of_response(char *s)
478 return 0; /* no CID separator */
479 cid = isdn_getnum(s);
481 return 0; /* CID not numeric */
482 if (cid < 1 || cid > 65535)
483 return -1; /* CID out of range */
488 * gigaset_handle_modem_response() - process received modem response
489 * @cs: device descriptor structure.
491 * Called by asyncdata/isocdata if a block of data received from the
492 * device must be processed as a modem command response. The data is
493 * already in the cs structure.
495 void gigaset_handle_modem_response(struct cardstate *cs)
497 unsigned char *argv[MAX_REC_PARAMS + 1];
500 const struct resp_type_t *rt;
501 const struct zsau_resp_t *zr;
504 unsigned next, tail, head;
505 struct event_t *event;
515 /* ignore additional LFs/CRs (M10x config mode or cx100) */
516 gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
519 cs->respdata[len] = 0;
520 argv[0] = cs->respdata;
522 if (cs->at_state.getstring) {
523 /* getstring only allowed without cid at the moment */
524 cs->at_state.getstring = 0;
529 for (i = 0; i < len; i++)
530 switch (cs->respdata[i]) {
534 if (params > MAX_REC_PARAMS) {
536 "too many parameters in response\n");
537 /* need last parameter (might be CID) */
540 argv[params++] = cs->respdata + i + 1;
544 cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
546 gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
551 for (j = 1; j < params; ++j)
554 gig_dbg(DEBUG_EVENT, "CMD received: %s", argv[0]);
557 gig_dbg(DEBUG_EVENT, "CID: %s", argv[params]);
559 gig_dbg(DEBUG_EVENT, "available params: %d", params - 1);
560 for (j = 1; j < params; j++)
561 gig_dbg(DEBUG_EVENT, "param %d: %s", j, argv[j]);
564 spin_lock_irqsave(&cs->ev_lock, flags);
570 while (curarg < params) {
571 next = (tail + 1) % MAX_EVENTS;
572 if (unlikely(next == head)) {
573 dev_err(cs->dev, "event queue full\n");
577 event = cs->events + tail;
578 event->at_state = NULL;
585 resp_code = RSP_STRING;
586 param_type = RT_STRING;
588 for (rt = resp_type; rt->response; ++rt)
589 if (!strcmp(argv[curarg], rt->response))
593 event->type = RSP_UNKNOWN;
595 "unknown modem response: %s\n",
600 resp_code = rt->resp_code;
601 param_type = rt->type;
605 event->type = resp_code;
607 switch (param_type) {
613 "received RING without CID!\n");
614 event->type = RSP_INVAL;
618 event->parameter = cid;
623 if (curarg >= params) {
624 event->parameter = ZSAU_NONE;
627 for (zr = zsau_resp; zr->str; ++zr)
628 if (!strcmp(argv[curarg], zr->str))
630 event->parameter = zr->code;
633 "%s: unknown parameter %s after ZSAU\n",
634 __func__, argv[curarg]);
638 if (curarg < params) {
639 event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
641 dev_err(cs->dev, "out of memory\n");
644 gig_dbg(DEBUG_EVENT, "string==%s",
645 event->ptr ? (char *) event->ptr : "NULL");
648 event->parameter = -1;
649 if (curarg + 1 < params) {
650 i = isdn_gethex(argv[curarg]);
651 j = isdn_gethex(argv[curarg + 1]);
652 if (i >= 0 && i < 256 && j >= 0 && j < 256)
653 event->parameter = (unsigned) i << 8
661 if (curarg < params) {
662 if (param_type == RT_HEX)
664 isdn_gethex(argv[curarg]);
667 isdn_getnum(argv[curarg]);
670 event->parameter = -1;
671 gig_dbg(DEBUG_EVENT, "parameter==%d", event->parameter);
675 if (resp_code == RSP_ZDLE)
676 cs->dle = event->parameter;
683 spin_unlock_irqrestore(&cs->ev_lock, flags);
685 if (curarg != params)
687 "invalid number of processed parameters: %d/%d",
690 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
693 * process closing of connection associated with given AT state structure
695 static void disconnect(struct at_state_t **at_state_p)
698 struct bc_state *bcs = (*at_state_p)->bcs;
699 struct cardstate *cs = (*at_state_p)->cs;
701 spin_lock_irqsave(&cs->lock, flags);
702 ++(*at_state_p)->seq_index;
704 /* revert to selected idle mode */
706 cs->at_state.pending_commands |= PC_UMMODE;
707 gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
708 cs->commands_pending = 1;
710 spin_unlock_irqrestore(&cs->lock, flags);
713 /* B channel assigned: invoke hardware specific handler */
714 cs->ops->close_bchannel(bcs);
716 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
717 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
718 gigaset_isdn_hupD(bcs);
721 /* no B channel assigned: just deallocate */
722 spin_lock_irqsave(&cs->lock, flags);
723 list_del(&(*at_state_p)->list);
726 spin_unlock_irqrestore(&cs->lock, flags);
731 * get a free AT state structure: either one of those associated with the
732 * B channels of the Gigaset device, or if none of those is available,
733 * a newly allocated one with bcs=NULL
734 * The structure should be freed by calling disconnect() after use.
736 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
738 /* cids: >0: siemens-cid
740 -1: no cid assigned yet
745 struct at_state_t *ret;
747 for (i = 0; i < cs->channels; ++i)
748 if (gigaset_get_channel(cs->bcs + i)) {
749 ret = &cs->bcs[i].at_state;
754 spin_lock_irqsave(&cs->lock, flags);
755 ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
757 gigaset_at_init(ret, NULL, cs, cid);
758 list_add(&ret->list, &cs->temp_at_states);
760 spin_unlock_irqrestore(&cs->lock, flags);
764 static void init_failed(struct cardstate *cs, int mode)
767 struct at_state_t *at_state;
769 cs->at_state.pending_commands &= ~PC_INIT;
771 cs->mstate = MS_UNINITIALIZED;
772 gigaset_free_channels(cs);
773 for (i = 0; i < cs->channels; ++i) {
774 at_state = &cs->bcs[i].at_state;
775 if (at_state->pending_commands & PC_CID) {
776 at_state->pending_commands &= ~PC_CID;
777 at_state->pending_commands |= PC_NOCID;
778 cs->commands_pending = 1;
783 static void schedule_init(struct cardstate *cs, int state)
785 if (cs->at_state.pending_commands & PC_INIT) {
786 gig_dbg(DEBUG_EVENT, "not scheduling PC_INIT again");
790 cs->mode = M_UNKNOWN;
791 gigaset_block_channels(cs);
792 cs->at_state.pending_commands |= PC_INIT;
793 gig_dbg(DEBUG_EVENT, "Scheduling PC_INIT");
794 cs->commands_pending = 1;
797 /* Add "AT" to a command, add the cid, dle encode it, send the result to the
799 static void send_command(struct cardstate *cs, const char *cmd, int cid,
800 int dle, gfp_t kmallocflags)
802 size_t cmdlen, buflen;
803 char *cmdpos, *cmdbuf, *cmdtail;
805 cmdlen = strlen(cmd);
806 buflen = 11 + cmdlen;
807 if (unlikely(buflen <= cmdlen)) {
808 dev_err(cs->dev, "integer overflow in buflen\n");
812 cmdbuf = kmalloc(buflen, kmallocflags);
813 if (unlikely(!cmdbuf)) {
814 dev_err(cs->dev, "out of memory\n");
819 cmdtail = cmdpos + cmdlen;
820 memcpy(cmdpos, cmd, cmdlen);
822 if (cid > 0 && cid <= 65535) {
824 *--cmdpos = '0' + cid % 10;
842 cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
846 static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
848 struct at_state_t *at_state;
853 return &cs->at_state;
855 for (i = 0; i < cs->channels; ++i)
856 if (cid == cs->bcs[i].at_state.cid)
857 return &cs->bcs[i].at_state;
859 spin_lock_irqsave(&cs->lock, flags);
861 list_for_each_entry(at_state, &cs->temp_at_states, list)
862 if (cid == at_state->cid) {
863 spin_unlock_irqrestore(&cs->lock, flags);
867 spin_unlock_irqrestore(&cs->lock, flags);
872 static void bchannel_down(struct bc_state *bcs)
874 if (bcs->chstate & CHS_B_UP) {
875 bcs->chstate &= ~CHS_B_UP;
876 gigaset_isdn_hupB(bcs);
879 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
880 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
881 gigaset_isdn_hupD(bcs);
884 gigaset_free_channel(bcs);
886 gigaset_bcs_reinit(bcs);
889 static void bchannel_up(struct bc_state *bcs)
891 if (bcs->chstate & CHS_B_UP) {
892 dev_notice(bcs->cs->dev, "%s: B channel already up\n",
897 bcs->chstate |= CHS_B_UP;
898 gigaset_isdn_connB(bcs);
901 static void start_dial(struct at_state_t *at_state, void *data,
904 struct bc_state *bcs = at_state->bcs;
905 struct cardstate *cs = at_state->cs;
906 char **commands = data;
910 bcs->chstate |= CHS_NOTIFY_LL;
912 spin_lock_irqsave(&cs->lock, flags);
913 if (at_state->seq_index != seq_index) {
914 spin_unlock_irqrestore(&cs->lock, flags);
917 spin_unlock_irqrestore(&cs->lock, flags);
919 for (i = 0; i < AT_NUM; ++i) {
920 kfree(bcs->commands[i]);
921 bcs->commands[i] = commands[i];
924 at_state->pending_commands |= PC_CID;
925 gig_dbg(DEBUG_EVENT, "Scheduling PC_CID");
926 cs->commands_pending = 1;
930 for (i = 0; i < AT_NUM; ++i) {
934 at_state->pending_commands |= PC_NOCID;
935 gig_dbg(DEBUG_EVENT, "Scheduling PC_NOCID");
936 cs->commands_pending = 1;
940 static void start_accept(struct at_state_t *at_state)
942 struct cardstate *cs = at_state->cs;
943 struct bc_state *bcs = at_state->bcs;
946 for (i = 0; i < AT_NUM; ++i) {
947 kfree(bcs->commands[i]);
948 bcs->commands[i] = NULL;
951 bcs->commands[AT_PROTO] = kmalloc(9, GFP_ATOMIC);
952 bcs->commands[AT_ISO] = kmalloc(9, GFP_ATOMIC);
953 if (!bcs->commands[AT_PROTO] || !bcs->commands[AT_ISO]) {
954 dev_err(at_state->cs->dev, "out of memory\n");
956 at_state->pending_commands |= PC_HUP;
957 gig_dbg(DEBUG_EVENT, "Scheduling PC_HUP");
958 cs->commands_pending = 1;
962 snprintf(bcs->commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2);
963 snprintf(bcs->commands[AT_ISO], 9, "^SISO=%u\r", bcs->channel + 1);
965 at_state->pending_commands |= PC_ACCEPT;
966 gig_dbg(DEBUG_EVENT, "Scheduling PC_ACCEPT");
967 cs->commands_pending = 1;
970 static void do_start(struct cardstate *cs)
972 gigaset_free_channels(cs);
974 if (cs->mstate != MS_LOCKED)
975 schedule_init(cs, MS_INIT);
978 gigaset_isdn_start(cs);
981 wake_up(&cs->waitqueue);
984 static void finish_shutdown(struct cardstate *cs)
986 if (cs->mstate != MS_LOCKED) {
987 cs->mstate = MS_UNINITIALIZED;
988 cs->mode = M_UNKNOWN;
991 /* Tell the LL that the device is not available .. */
994 gigaset_isdn_stop(cs);
997 /* The rest is done by cleanup_cs () in user mode. */
999 cs->cmd_result = -ENODEV;
1001 wake_up(&cs->waitqueue);
1004 static void do_shutdown(struct cardstate *cs)
1006 gigaset_block_channels(cs);
1008 if (cs->mstate == MS_READY) {
1009 cs->mstate = MS_SHUTDOWN;
1010 cs->at_state.pending_commands |= PC_SHUTDOWN;
1011 gig_dbg(DEBUG_EVENT, "Scheduling PC_SHUTDOWN");
1012 cs->commands_pending = 1;
1014 finish_shutdown(cs);
1017 static void do_stop(struct cardstate *cs)
1019 unsigned long flags;
1021 spin_lock_irqsave(&cs->lock, flags);
1023 spin_unlock_irqrestore(&cs->lock, flags);
1028 /* Entering cid mode or getting a cid failed:
1029 * try to initialize the device and try again.
1031 * channel >= 0: getting cid for the channel failed
1032 * channel < 0: entering cid mode failed
1034 * returns 0 on failure
1036 static int reinit_and_retry(struct cardstate *cs, int channel)
1040 if (--cs->retry_count <= 0)
1043 for (i = 0; i < cs->channels; ++i)
1044 if (cs->bcs[i].at_state.cid > 0)
1049 "Could not enter cid mode. Reinit device and try again.\n");
1052 "Could not get a call id. Reinit device and try again.\n");
1053 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1055 schedule_init(cs, MS_INIT);
1059 static int at_state_invalid(struct cardstate *cs,
1060 struct at_state_t *test_ptr)
1062 unsigned long flags;
1064 struct at_state_t *at_state;
1067 spin_lock_irqsave(&cs->lock, flags);
1069 if (test_ptr == &cs->at_state)
1072 list_for_each_entry(at_state, &cs->temp_at_states, list)
1073 if (at_state == test_ptr)
1076 for (channel = 0; channel < cs->channels; ++channel)
1077 if (&cs->bcs[channel].at_state == test_ptr)
1082 spin_unlock_irqrestore(&cs->lock, flags);
1086 static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1087 struct at_state_t **p_at_state)
1090 struct at_state_t *at_state = *p_at_state;
1092 retval = gigaset_isdn_icall(at_state);
1097 dev_err(cs->dev, "internal error: disposition=%d\n", retval);
1098 /* --v-- fall through --v-- */
1102 * Device doc says that would reject the call.
1103 * In fact it doesn't.
1105 at_state->pending_commands |= PC_HUP;
1106 cs->commands_pending = 1;
1111 static int do_lock(struct cardstate *cs)
1116 switch (cs->mstate) {
1117 case MS_UNINITIALIZED:
1119 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1120 cs->at_state.pending_commands)
1123 for (i = 0; i < cs->channels; ++i)
1124 if (cs->bcs[i].at_state.pending_commands)
1127 if (!gigaset_get_channels(cs))
1138 cs->mstate = MS_LOCKED;
1139 cs->mode = M_UNKNOWN;
1144 static int do_unlock(struct cardstate *cs)
1146 if (cs->mstate != MS_LOCKED)
1149 cs->mstate = MS_UNINITIALIZED;
1150 cs->mode = M_UNKNOWN;
1151 gigaset_free_channels(cs);
1153 schedule_init(cs, MS_INIT);
1158 static void do_action(int action, struct cardstate *cs,
1159 struct bc_state *bcs,
1160 struct at_state_t **p_at_state, char **pp_command,
1161 int *p_genresp, int *p_resp_code,
1164 struct at_state_t *at_state = *p_at_state;
1165 struct at_state_t *at_state2;
1166 unsigned long flags;
1170 unsigned char *s, *e;
1178 at_state->waiting = 1;
1181 cs->at_state.pending_commands &= ~PC_INIT;
1182 cs->cur_at_seq = SEQ_NONE;
1183 cs->mode = M_UNIMODEM;
1184 spin_lock_irqsave(&cs->lock, flags);
1186 spin_unlock_irqrestore(&cs->lock, flags);
1187 gigaset_free_channels(cs);
1188 cs->mstate = MS_READY;
1191 spin_unlock_irqrestore(&cs->lock, flags);
1192 cs->at_state.pending_commands |= PC_CIDMODE;
1193 gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
1194 cs->commands_pending = 1;
1197 dev_warn(cs->dev, "Could not initialize the device.\n");
1199 init_failed(cs, M_UNKNOWN);
1200 cs->cur_at_seq = SEQ_NONE;
1202 case ACT_CONFIGMODE:
1203 init_failed(cs, M_CONFIG);
1204 cs->cur_at_seq = SEQ_NONE;
1208 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1209 cs->inbuf[0].inputstate &=
1210 ~(INS_command | INS_DLE_command);
1214 cs->inbuf[0].inputstate =
1215 (cs->inbuf[0].inputstate & ~INS_DLE_command)
1219 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1220 gigaset_free_channels(cs);
1221 cs->mstate = MS_READY;
1224 cs->cur_at_seq = SEQ_NONE;
1227 cs->mode = M_UNIMODEM;
1228 cs->cur_at_seq = SEQ_NONE;
1231 cs->cur_at_seq = SEQ_NONE;
1232 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1233 init_failed(cs, M_UNKNOWN);
1236 if (!reinit_and_retry(cs, -1))
1237 schedule_init(cs, MS_RECOVER);
1240 cs->cur_at_seq = SEQ_NONE;
1241 schedule_init(cs, MS_RECOVER);
1244 /* send "+++" (hangup in unimodem mode) */
1246 cs->ops->write_cmd(cs, "+++", 3, NULL);
1249 /* get fresh AT state structure for new CID */
1250 at_state2 = get_free_channel(cs, ev->parameter);
1253 "RING ignored: could not allocate channel structure\n");
1257 /* initialize AT state structure
1258 * note that bcs may be NULL if no B channel is free
1260 at_state2->ConState = 700;
1261 for (i = 0; i < STR_NUM; ++i) {
1262 kfree(at_state2->str_var[i]);
1263 at_state2->str_var[i] = NULL;
1265 at_state2->int_var[VAR_ZCTP] = -1;
1267 spin_lock_irqsave(&cs->lock, flags);
1268 at_state2->timer_expires = RING_TIMEOUT;
1269 at_state2->timer_active = 1;
1270 spin_unlock_irqrestore(&cs->lock, flags);
1273 handle_icall(cs, bcs, p_at_state);
1276 dev_warn(cs->dev, "Could not shut down the device.\n");
1280 cs->cur_at_seq = SEQ_NONE;
1281 finish_shutdown(cs);
1284 if (cs->onechannel) {
1285 at_state->pending_commands |= PC_DLE1;
1286 cs->commands_pending = 1;
1289 bcs->chstate |= CHS_D_UP;
1290 gigaset_isdn_connD(bcs);
1291 cs->ops->init_bchannel(bcs);
1294 cs->cur_at_seq = SEQ_NONE;
1295 bcs = cs->bcs + cs->curchannel;
1297 bcs->chstate |= CHS_D_UP;
1298 gigaset_isdn_connD(bcs);
1299 cs->ops->init_bchannel(bcs);
1302 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1304 case ACT_DISCONNECT:
1305 cs->cur_at_seq = SEQ_NONE;
1307 if (bcs && cs->onechannel && cs->dle) {
1308 /* Check for other open channels not needed:
1309 * DLE only used for M10x with one B channel.
1311 at_state->pending_commands |= PC_DLE0;
1312 cs->commands_pending = 1;
1314 disconnect(p_at_state);
1317 at_state->int_var[VAR_ZDLE] = 0;
1321 cs->cur_at_seq = SEQ_NONE;
1322 at_state2 = &cs->bcs[cs->curchannel].at_state;
1323 disconnect(&at_state2);
1326 cs->cur_at_seq = SEQ_NONE;
1327 dev_warn(cs->dev, "Could not hang up.\n");
1329 if (bcs && cs->onechannel)
1330 at_state->pending_commands |= PC_DLE0;
1332 disconnect(p_at_state);
1333 schedule_init(cs, MS_RECOVER);
1336 cs->cur_at_seq = SEQ_NONE;
1337 dev_warn(cs->dev, "Could not leave DLE mode.\n");
1338 at_state2 = &cs->bcs[cs->curchannel].at_state;
1339 disconnect(&at_state2);
1340 schedule_init(cs, MS_RECOVER);
1343 cs->cur_at_seq = SEQ_NONE;
1345 "Could not enter DLE mode. Trying to hang up.\n");
1346 channel = cs->curchannel;
1347 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1348 cs->commands_pending = 1;
1351 case ACT_CID: /* got cid; start dialing */
1352 cs->cur_at_seq = SEQ_NONE;
1353 channel = cs->curchannel;
1354 if (ev->parameter > 0 && ev->parameter <= 65535) {
1355 cs->bcs[channel].at_state.cid = ev->parameter;
1356 cs->bcs[channel].at_state.pending_commands |=
1358 cs->commands_pending = 1;
1363 cs->cur_at_seq = SEQ_NONE;
1364 channel = cs->curchannel;
1365 if (!reinit_and_retry(cs, channel)) {
1367 "Could not get a call ID. Cannot dial.\n");
1368 at_state2 = &cs->bcs[channel].at_state;
1369 disconnect(&at_state2);
1373 cs->cur_at_seq = SEQ_NONE;
1374 at_state2 = &cs->bcs[cs->curchannel].at_state;
1375 disconnect(&at_state2);
1380 cs->cur_at_seq = SEQ_NONE;
1383 case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL procssng */
1384 disconnect(p_at_state);
1387 case ACT_ABORTDIAL: /* error/timeout during dial preparation */
1388 cs->cur_at_seq = SEQ_NONE;
1389 at_state->pending_commands |= PC_HUP;
1390 cs->commands_pending = 1;
1393 case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
1394 case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
1395 case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
1396 at_state->pending_commands |= PC_HUP;
1397 cs->commands_pending = 1;
1399 case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1400 are not handled properly anymore */
1401 at_state->getstring = 1;
1406 *p_resp_code = RSP_ERROR;
1411 if (!strcmp(s, "OK")) {
1413 *p_resp_code = RSP_ERROR;
1417 for (i = 0; i < 4; ++i) {
1418 val = simple_strtoul(s, (char **) &e, 10);
1419 if (val > INT_MAX || e == s)
1424 } else if (*e != '.')
1432 *p_resp_code = RSP_ERROR;
1435 /*at_state->getstring = 1;*/
1439 if (cs->gotfwver == 0) {
1441 gig_dbg(DEBUG_EVENT,
1442 "firmware version %02d.%03d.%02d.%02d",
1443 cs->fwver[0], cs->fwver[1],
1444 cs->fwver[2], cs->fwver[3]);
1450 dev_err(cs->dev, "could not read firmware version.\n");
1453 gig_dbg(DEBUG_ANY, "%s: ERROR response in ConState %d",
1454 __func__, at_state->ConState);
1455 cs->cur_at_seq = SEQ_NONE;
1458 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1459 __func__, ev->type, at_state->ConState);
1462 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1463 __func__, ev->type, at_state->ConState);
1466 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1467 ev->parameter, at_state->ConState);
1470 /* events from the LL */
1472 start_dial(at_state, ev->ptr, ev->parameter);
1475 start_accept(at_state);
1478 at_state->pending_commands |= PC_HUP;
1479 gig_dbg(DEBUG_EVENT, "Scheduling PC_HUP");
1480 cs->commands_pending = 1;
1483 /* hotplug events */
1491 /* events from the interface */
1493 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1495 wake_up(&cs->waitqueue);
1498 if (ev->parameter != 0)
1499 cs->cmd_result = -EINVAL;
1500 else if (cs->gotfwver != 1) {
1501 cs->cmd_result = -ENOENT;
1503 memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1507 wake_up(&cs->waitqueue);
1510 /* events from the proc file system */
1511 case ACT_PROC_CIDMODE:
1512 spin_lock_irqsave(&cs->lock, flags);
1513 if (ev->parameter != cs->cidmode) {
1514 cs->cidmode = ev->parameter;
1515 if (ev->parameter) {
1516 cs->at_state.pending_commands |= PC_CIDMODE;
1517 gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
1519 cs->at_state.pending_commands |= PC_UMMODE;
1520 gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
1522 cs->commands_pending = 1;
1524 spin_unlock_irqrestore(&cs->lock, flags);
1526 wake_up(&cs->waitqueue);
1529 /* events from the hardware drivers */
1530 case ACT_NOTIFY_BC_DOWN:
1533 case ACT_NOTIFY_BC_UP:
1542 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1543 *pp_command = at_state->bcs->commands[action - ACT_CMD];
1546 *p_resp_code = RSP_NULL;
1549 dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
1553 /* State machine to do the calling and hangup procedure */
1554 static void process_event(struct cardstate *cs, struct event_t *ev)
1556 struct bc_state *bcs;
1557 char *p_command = NULL;
1558 struct reply_t *rep;
1561 int resp_code = RSP_ERROR;
1563 struct at_state_t *at_state;
1566 unsigned long flags;
1569 at_state = at_state_from_cid(cs, ev->cid);
1571 gig_dbg(DEBUG_EVENT, "event %d for invalid cid %d",
1573 gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1578 at_state = ev->at_state;
1579 if (at_state_invalid(cs, at_state)) {
1580 gig_dbg(DEBUG_EVENT, "event for invalid at_state %p",
1586 gig_dbg(DEBUG_EVENT, "connection state %d, event %d",
1587 at_state->ConState, ev->type);
1589 bcs = at_state->bcs;
1590 sendcid = at_state->cid;
1592 /* Setting the pointer to the dial array */
1593 rep = at_state->replystruct;
1595 spin_lock_irqsave(&cs->lock, flags);
1596 if (ev->type == EV_TIMEOUT) {
1597 if (ev->parameter != at_state->timer_index
1598 || !at_state->timer_active) {
1599 ev->type = RSP_NONE; /* old timeout */
1600 gig_dbg(DEBUG_EVENT, "old timeout");
1601 } else if (!at_state->waiting)
1602 gig_dbg(DEBUG_EVENT, "timeout occurred");
1604 gig_dbg(DEBUG_EVENT, "stopped waiting");
1606 spin_unlock_irqrestore(&cs->lock, flags);
1608 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1609 or at_state->str_var[STR_XXXX], set it */
1610 if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1611 index = ev->type - RSP_VAR;
1612 at_state->int_var[index] = ev->parameter;
1613 } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1614 index = ev->type - RSP_STR;
1615 kfree(at_state->str_var[index]);
1616 at_state->str_var[index] = ev->ptr;
1617 ev->ptr = NULL; /* prevent process_events() from
1621 if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1622 at_state->getstring = 0;
1624 /* Search row in dial array which matches modem response and current
1627 rcode = rep->resp_code;
1628 if (rcode == RSP_LAST) {
1629 /* found nothing...*/
1630 dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1631 "resp_code %d in ConState %d!\n",
1632 __func__, ev->type, at_state->ConState);
1635 if ((rcode == RSP_ANY || rcode == ev->type)
1636 && ((int) at_state->ConState >= rep->min_ConState)
1637 && (rep->max_ConState < 0
1638 || (int) at_state->ConState <= rep->max_ConState)
1639 && (rep->parameter < 0 || rep->parameter == ev->parameter))
1643 p_command = rep->command;
1645 at_state->waiting = 0;
1646 for (curact = 0; curact < MAXACT; ++curact) {
1647 /* The row tells us what we should do ..
1649 do_action(rep->action[curact], cs, bcs, &at_state, &p_command,
1650 &genresp, &resp_code, ev);
1652 break; /* may be freed after disconnect */
1656 /* Jump to the next con-state regarding the array */
1657 if (rep->new_ConState >= 0)
1658 at_state->ConState = rep->new_ConState;
1661 spin_lock_irqsave(&cs->lock, flags);
1662 at_state->timer_expires = 0;
1663 at_state->timer_active = 0;
1664 spin_unlock_irqrestore(&cs->lock, flags);
1665 gigaset_add_event(cs, at_state, resp_code,
1668 /* Send command to modem if not NULL... */
1671 send_command(cs, p_command,
1675 gigaset_add_event(cs, at_state,
1680 spin_lock_irqsave(&cs->lock, flags);
1681 if (!rep->timeout) {
1682 at_state->timer_expires = 0;
1683 at_state->timer_active = 0;
1684 } else if (rep->timeout > 0) { /* new timeout */
1685 at_state->timer_expires = rep->timeout * 10;
1686 at_state->timer_active = 1;
1687 ++at_state->timer_index;
1689 spin_unlock_irqrestore(&cs->lock, flags);
1694 static void schedule_sequence(struct cardstate *cs,
1695 struct at_state_t *at_state, int sequence)
1697 cs->cur_at_seq = sequence;
1698 gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1701 static void process_command_flags(struct cardstate *cs)
1703 struct at_state_t *at_state = NULL;
1704 struct bc_state *bcs;
1707 unsigned long flags;
1709 cs->commands_pending = 0;
1711 if (cs->cur_at_seq) {
1712 gig_dbg(DEBUG_EVENT, "not searching scheduled commands: busy");
1716 gig_dbg(DEBUG_EVENT, "searching scheduled commands");
1718 sequence = SEQ_NONE;
1720 /* clear pending_commands and hangup channels on shutdown */
1721 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1722 cs->at_state.pending_commands &= ~PC_CIDMODE;
1723 for (i = 0; i < cs->channels; ++i) {
1725 at_state = &bcs->at_state;
1726 at_state->pending_commands &=
1727 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1728 if (at_state->cid > 0)
1729 at_state->pending_commands |= PC_HUP;
1730 if (at_state->pending_commands & PC_CID) {
1731 at_state->pending_commands |= PC_NOCID;
1732 at_state->pending_commands &= ~PC_CID;
1737 /* clear pending_commands and hangup channels on reset */
1738 if (cs->at_state.pending_commands & PC_INIT) {
1739 cs->at_state.pending_commands &= ~PC_CIDMODE;
1740 for (i = 0; i < cs->channels; ++i) {
1742 at_state = &bcs->at_state;
1743 at_state->pending_commands &=
1744 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1745 if (at_state->cid > 0)
1746 at_state->pending_commands |= PC_HUP;
1747 if (cs->mstate == MS_RECOVER) {
1748 if (at_state->pending_commands & PC_CID) {
1749 at_state->pending_commands |= PC_NOCID;
1750 at_state->pending_commands &= ~PC_CID;
1756 /* only switch back to unimodem mode if no commands are pending and
1757 * no channels are up */
1758 spin_lock_irqsave(&cs->lock, flags);
1759 if (cs->at_state.pending_commands == PC_UMMODE
1761 && list_empty(&cs->temp_at_states)
1762 && cs->mode == M_CID) {
1763 sequence = SEQ_UMMODE;
1764 at_state = &cs->at_state;
1765 for (i = 0; i < cs->channels; ++i) {
1767 if (bcs->at_state.pending_commands ||
1768 bcs->at_state.cid > 0) {
1769 sequence = SEQ_NONE;
1774 spin_unlock_irqrestore(&cs->lock, flags);
1775 cs->at_state.pending_commands &= ~PC_UMMODE;
1776 if (sequence != SEQ_NONE) {
1777 schedule_sequence(cs, at_state, sequence);
1781 for (i = 0; i < cs->channels; ++i) {
1783 if (bcs->at_state.pending_commands & PC_HUP) {
1784 bcs->at_state.pending_commands &= ~PC_HUP;
1785 if (bcs->at_state.pending_commands & PC_CID) {
1786 /* not yet dialing: PC_NOCID is sufficient */
1787 bcs->at_state.pending_commands |= PC_NOCID;
1788 bcs->at_state.pending_commands &= ~PC_CID;
1790 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1794 if (bcs->at_state.pending_commands & PC_NOCID) {
1795 bcs->at_state.pending_commands &= ~PC_NOCID;
1796 cs->curchannel = bcs->channel;
1797 schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1799 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1800 bcs->at_state.pending_commands &= ~PC_DLE0;
1801 cs->curchannel = bcs->channel;
1802 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1807 list_for_each_entry(at_state, &cs->temp_at_states, list)
1808 if (at_state->pending_commands & PC_HUP) {
1809 at_state->pending_commands &= ~PC_HUP;
1810 schedule_sequence(cs, at_state, SEQ_HUP);
1814 if (cs->at_state.pending_commands & PC_INIT) {
1815 cs->at_state.pending_commands &= ~PC_INIT;
1817 cs->inbuf->inputstate = INS_command;
1818 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1821 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1822 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1823 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1826 if (cs->at_state.pending_commands & PC_CIDMODE) {
1827 cs->at_state.pending_commands &= ~PC_CIDMODE;
1828 if (cs->mode == M_UNIMODEM) {
1829 cs->retry_count = 1;
1830 schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1835 for (i = 0; i < cs->channels; ++i) {
1837 if (bcs->at_state.pending_commands & PC_DLE1) {
1838 bcs->at_state.pending_commands &= ~PC_DLE1;
1839 cs->curchannel = bcs->channel;
1840 schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1843 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1844 bcs->at_state.pending_commands &= ~PC_ACCEPT;
1845 schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1848 if (bcs->at_state.pending_commands & PC_DIAL) {
1849 bcs->at_state.pending_commands &= ~PC_DIAL;
1850 schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1853 if (bcs->at_state.pending_commands & PC_CID) {
1856 cs->at_state.pending_commands |= PC_CIDMODE;
1857 gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
1858 cs->commands_pending = 1;
1860 #ifdef GIG_MAYINITONDIAL
1862 schedule_init(cs, MS_INIT);
1866 bcs->at_state.pending_commands &= ~PC_CID;
1867 cs->curchannel = bcs->channel;
1869 cs->retry_count = 2;
1871 cs->retry_count = 1;
1873 schedule_sequence(cs, &cs->at_state, SEQ_CID);
1879 static void process_events(struct cardstate *cs)
1882 unsigned head, tail;
1884 int check_flags = 0;
1886 unsigned long flags;
1888 spin_lock_irqsave(&cs->ev_lock, flags);
1891 for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1894 if (!check_flags && !cs->commands_pending)
1897 spin_unlock_irqrestore(&cs->ev_lock, flags);
1898 process_command_flags(cs);
1899 spin_lock_irqsave(&cs->ev_lock, flags);
1902 if (!cs->commands_pending)
1908 ev = cs->events + head;
1909 was_busy = cs->cur_at_seq != SEQ_NONE;
1910 spin_unlock_irqrestore(&cs->ev_lock, flags);
1911 process_event(cs, ev);
1912 spin_lock_irqsave(&cs->ev_lock, flags);
1915 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1918 head = (head + 1) % MAX_EVENTS;
1922 spin_unlock_irqrestore(&cs->ev_lock, flags);
1924 if (i == 2 * MAX_EVENTS) {
1926 "infinite loop in process_events; aborting.\n");
1930 /* tasklet scheduled on any event received from the Gigaset device
1932 * data ISDN controller state structure
1934 void gigaset_handle_event(unsigned long data)
1936 struct cardstate *cs = (struct cardstate *) data;
1938 /* handle incoming data on control/common channel */
1939 if (cs->inbuf->head != cs->inbuf->tail) {
1940 gig_dbg(DEBUG_INTR, "processing new data");
1941 cs->ops->handle_input(cs->inbuf);