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);