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 * =====================================================================
16 #include <linux/export.h>
19 /* ========================================================== */
20 /* bit masks for pending commands */
26 #define PC_SHUTDOWN 0x020
27 #define PC_ACCEPT 0x040
29 #define PC_NOCID 0x100
30 #define PC_CIDMODE 0x200
31 #define PC_UMMODE 0x400
33 /* types of modem responses */
41 /* Possible ASCII responses */
49 /* responses with values to store in at_state */
52 #define RSP_ZSAU (RSP_VAR + VAR_ZSAU)
53 #define RSP_ZDLE (RSP_VAR + VAR_ZDLE)
54 #define RSP_ZCTP (RSP_VAR + VAR_ZCTP)
56 #define RSP_STR (RSP_VAR + VAR_NUM)
57 #define RSP_NMBR (RSP_STR + STR_NMBR)
58 #define RSP_ZCPN (RSP_STR + STR_ZCPN)
59 #define RSP_ZCON (RSP_STR + STR_ZCON)
60 #define RSP_ZBC (RSP_STR + STR_ZBC)
61 #define RSP_ZHLC (RSP_STR + STR_ZHLC)
63 #define RSP_WRONG_CID -2 /* unknown cid in cmd */
64 #define RSP_INVAL -6 /* invalid response */
65 #define RSP_NODEV -9 /* device not connected */
68 #define RSP_STRING -20
74 /* actions for process_response */
78 #define ACT_FAILINIT 3
79 #define ACT_HUPMODEM 4
80 #define ACT_CONFIGMODE 5
84 #define ACT_FAILDLE0 9
85 #define ACT_FAILDLE1 10
88 #define ACT_FAILCID 13
90 #define ACT_FAILSDOWN 15
93 #define ACT_DIALING 18
94 #define ACT_ABORTDIAL 19
95 #define ACT_DISCONNECT 20
96 #define ACT_CONNECT 21
97 #define ACT_REMOTEREJECT 22
98 #define ACT_CONNTIMEOUT 23
99 #define ACT_REMOTEHUP 24
100 #define ACT_ABORTHUP 25
102 #define ACT_ACCEPTED 27
103 #define ACT_ABORTACCEPT 28
104 #define ACT_TIMEOUT 29
105 #define ACT_GETSTRING 30
106 #define ACT_SETVER 31
107 #define ACT_FAILVER 32
108 #define ACT_GOTVER 33
111 #define ACT_ABORTCID 36
113 #define ACT_NOTIFY_BC_DOWN 38
114 #define ACT_NOTIFY_BC_UP 39
116 #define ACT_ACCEPT 41
118 #define ACT_IF_LOCK 44
121 #define ACT_FAKEDLE0 47
122 #define ACT_FAKEHUP 48
123 #define ACT_FAKESDOWN 49
124 #define ACT_SHUTDOWN 50
125 #define ACT_PROC_CIDMODE 51
126 #define ACT_UMODESET 52
127 #define ACT_FAILUMODE 53
128 #define ACT_CMODESET 54
129 #define ACT_FAILCMODE 55
130 #define ACT_IF_VER 56
133 /* at command sequences */
139 #define SEQ_NOCID 350
142 #define SEQ_ACCEPT 720
143 #define SEQ_SHUTDOWN 500
144 #define SEQ_CIDMODE 10
145 #define SEQ_UMMODE 11
148 /* 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid),
149 * 400: hup, 500: reset, 600: dial, 700: ring */
150 struct reply_t gigaset_tab_nocid[] =
152 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout,
155 /* initialize device, set cid mode if possible */
156 {RSP_INIT, -1, -1, SEQ_INIT, 100, 1, {ACT_TIMEOUT} },
158 {EV_TIMEOUT, 100, 100, -1, 101, 3, {0}, "Z\r"},
159 {RSP_OK, 101, 103, -1, 120, 5, {ACT_GETSTRING},
162 {EV_TIMEOUT, 101, 101, -1, 102, 5, {0}, "Z\r"},
163 {RSP_ERROR, 101, 101, -1, 102, 5, {0}, "Z\r"},
165 {EV_TIMEOUT, 102, 102, -1, 108, 5, {ACT_SETDLE1},
167 {RSP_OK, 108, 108, -1, 104, -1},
168 {RSP_ZDLE, 104, 104, 0, 103, 5, {0}, "Z\r"},
169 {EV_TIMEOUT, 104, 104, -1, 0, 0, {ACT_FAILINIT} },
170 {RSP_ERROR, 108, 108, -1, 0, 0, {ACT_FAILINIT} },
172 {EV_TIMEOUT, 108, 108, -1, 105, 2, {ACT_SETDLE0,
175 {EV_TIMEOUT, 105, 105, -1, 103, 5, {0}, "Z\r"},
177 {RSP_ERROR, 102, 102, -1, 107, 5, {0}, "^GETPRE\r"},
178 {RSP_OK, 107, 107, -1, 0, 0, {ACT_CONFIGMODE} },
179 {RSP_ERROR, 107, 107, -1, 0, 0, {ACT_FAILINIT} },
180 {EV_TIMEOUT, 107, 107, -1, 0, 0, {ACT_FAILINIT} },
182 {RSP_ERROR, 103, 103, -1, 0, 0, {ACT_FAILINIT} },
183 {EV_TIMEOUT, 103, 103, -1, 0, 0, {ACT_FAILINIT} },
185 {RSP_STRING, 120, 120, -1, 121, -1, {ACT_SETVER} },
187 {EV_TIMEOUT, 120, 121, -1, 0, 0, {ACT_FAILVER,
189 {RSP_ERROR, 120, 121, -1, 0, 0, {ACT_FAILVER,
191 {RSP_OK, 121, 121, -1, 0, 0, {ACT_GOTVER,
193 {RSP_NONE, 121, 121, -1, 120, 0, {ACT_GETSTRING} },
196 {RSP_INIT, 0, 0, SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"},
197 {RSP_OK, 201, 201, -1, 202, -1},
198 {RSP_ZDLE, 202, 202, 0, 0, 0, {ACT_DLE0} },
199 {RSP_NODEV, 200, 249, -1, 0, 0, {ACT_FAKEDLE0} },
200 {RSP_ERROR, 200, 249, -1, 0, 0, {ACT_FAILDLE0} },
201 {EV_TIMEOUT, 200, 249, -1, 0, 0, {ACT_FAILDLE0} },
204 {RSP_INIT, 0, 0, SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"},
205 {RSP_OK, 251, 251, -1, 252, -1},
206 {RSP_ZDLE, 252, 252, 1, 0, 0, {ACT_DLE1} },
207 {RSP_ERROR, 250, 299, -1, 0, 0, {ACT_FAILDLE1} },
208 {EV_TIMEOUT, 250, 299, -1, 0, 0, {ACT_FAILDLE1} },
211 {RSP_RING, -1, -1, -1, -1, -1, {ACT_RING} },
214 {RSP_INIT, 0, 0, SEQ_CID, 301, 5, {0}, "^SGCI?\r"},
215 {RSP_OK, 301, 301, -1, 302, -1},
216 {RSP_ZGCI, 302, 302, -1, 0, 0, {ACT_CID} },
217 {RSP_ERROR, 301, 349, -1, 0, 0, {ACT_FAILCID} },
218 {EV_TIMEOUT, 301, 349, -1, 0, 0, {ACT_FAILCID} },
221 {RSP_INIT, 0, 0, SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"},
222 {RSP_OK, 150, 150, -1, 0, 0, {ACT_CMODESET} },
223 {RSP_ERROR, 150, 150, -1, 0, 0, {ACT_FAILCMODE} },
224 {EV_TIMEOUT, 150, 150, -1, 0, 0, {ACT_FAILCMODE} },
227 {RSP_INIT, 0, 0, SEQ_UMMODE, 160, 5, {0}, "Z\r"},
228 {RSP_OK, 160, 160, -1, 0, 0, {ACT_UMODESET} },
229 {RSP_ERROR, 160, 160, -1, 0, 0, {ACT_FAILUMODE} },
230 {EV_TIMEOUT, 160, 160, -1, 0, 0, {ACT_FAILUMODE} },
232 /* abort getting cid */
233 {RSP_INIT, 0, 0, SEQ_NOCID, 0, 0, {ACT_ABORTCID} },
236 {RSP_INIT, 0, 0, SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"},
237 {RSP_OK, 504, 504, -1, 0, 0, {ACT_SDOWN} },
238 {RSP_ERROR, 501, 599, -1, 0, 0, {ACT_FAILSDOWN} },
239 {EV_TIMEOUT, 501, 599, -1, 0, 0, {ACT_FAILSDOWN} },
240 {RSP_NODEV, 501, 599, -1, 0, 0, {ACT_FAKESDOWN} },
242 {EV_PROC_CIDMODE, -1, -1, -1, -1, -1, {ACT_PROC_CIDMODE} },
243 {EV_IF_LOCK, -1, -1, -1, -1, -1, {ACT_IF_LOCK} },
244 {EV_IF_VER, -1, -1, -1, -1, -1, {ACT_IF_VER} },
245 {EV_START, -1, -1, -1, -1, -1, {ACT_START} },
246 {EV_STOP, -1, -1, -1, -1, -1, {ACT_STOP} },
247 {EV_SHUTDOWN, -1, -1, -1, -1, -1, {ACT_SHUTDOWN} },
250 {RSP_ERROR, -1, -1, -1, -1, -1, {ACT_ERROR} },
251 {RSP_ZCAU, -1, -1, -1, -1, -1, {ACT_ZCAU} },
252 {RSP_NONE, -1, -1, -1, -1, -1, {ACT_DEBUG} },
253 {RSP_ANY, -1, -1, -1, -1, -1, {ACT_WARN} },
257 /* 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring,
258 * 400: hup, 750: accepted icall */
259 struct reply_t gigaset_tab_cid[] =
261 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout,
265 {EV_DIAL, -1, -1, -1, -1, -1, {ACT_DIAL} },
266 {RSP_INIT, 0, 0, SEQ_DIAL, 601, 5, {ACT_CMD + AT_BC} },
267 {RSP_OK, 601, 601, -1, 603, 5, {ACT_CMD + AT_PROTO} },
268 {RSP_OK, 603, 603, -1, 604, 5, {ACT_CMD + AT_TYPE} },
269 {RSP_OK, 604, 604, -1, 605, 5, {ACT_CMD + AT_MSN} },
270 {RSP_NULL, 605, 605, -1, 606, 5, {ACT_CMD + AT_CLIP} },
271 {RSP_OK, 605, 605, -1, 606, 5, {ACT_CMD + AT_CLIP} },
272 {RSP_NULL, 606, 606, -1, 607, 5, {ACT_CMD + AT_ISO} },
273 {RSP_OK, 606, 606, -1, 607, 5, {ACT_CMD + AT_ISO} },
274 {RSP_OK, 607, 607, -1, 608, 5, {0}, "+VLS=17\r"},
275 {RSP_OK, 608, 608, -1, 609, -1},
276 {RSP_ZSAU, 609, 609, ZSAU_PROCEEDING, 610, 5, {ACT_CMD + AT_DIAL} },
277 {RSP_OK, 610, 610, -1, 650, 0, {ACT_DIALING} },
279 {RSP_ERROR, 601, 610, -1, 0, 0, {ACT_ABORTDIAL} },
280 {EV_TIMEOUT, 601, 610, -1, 0, 0, {ACT_ABORTDIAL} },
282 /* optional dialing responses */
283 {EV_BC_OPEN, 650, 650, -1, 651, -1},
284 {RSP_ZVLS, 609, 651, 17, -1, -1, {ACT_DEBUG} },
285 {RSP_ZCTP, 610, 651, -1, -1, -1, {ACT_DEBUG} },
286 {RSP_ZCPN, 610, 651, -1, -1, -1, {ACT_DEBUG} },
287 {RSP_ZSAU, 650, 651, ZSAU_CALL_DELIVERED, -1, -1, {ACT_DEBUG} },
290 {RSP_ZSAU, 650, 650, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT} },
291 {RSP_ZSAU, 651, 651, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT,
293 {RSP_ZSAU, 750, 750, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT} },
294 {RSP_ZSAU, 751, 751, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT,
296 {EV_BC_OPEN, 800, 800, -1, 800, -1, {ACT_NOTIFY_BC_UP} },
299 {RSP_ZSAU, 650, 651, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT} },
300 {RSP_ZSAU, 750, 751, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP} },
301 {RSP_ZSAU, 800, 800, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP} },
304 {EV_HUP, -1, -1, -1, -1, -1, {ACT_HUP} },
305 {RSP_INIT, -1, -1, SEQ_HUP, 401, 5, {0}, "+VLS=0\r"},
306 {RSP_OK, 401, 401, -1, 402, 5},
307 {RSP_ZVLS, 402, 402, 0, 403, 5},
308 {RSP_ZSAU, 403, 403, ZSAU_DISCONNECT_REQ, -1, -1, {ACT_DEBUG} },
309 {RSP_ZSAU, 403, 403, ZSAU_NULL, 0, 0, {ACT_DISCONNECT} },
310 {RSP_NODEV, 401, 403, -1, 0, 0, {ACT_FAKEHUP} },
311 {RSP_ERROR, 401, 401, -1, 0, 0, {ACT_ABORTHUP} },
312 {EV_TIMEOUT, 401, 403, -1, 0, 0, {ACT_ABORTHUP} },
314 {EV_BC_CLOSED, 0, 0, -1, 0, -1, {ACT_NOTIFY_BC_DOWN} },
317 {RSP_ZBC, 700, 700, -1, -1, -1, {0} },
318 {RSP_ZHLC, 700, 700, -1, -1, -1, {0} },
319 {RSP_NMBR, 700, 700, -1, -1, -1, {0} },
320 {RSP_ZCPN, 700, 700, -1, -1, -1, {0} },
321 {RSP_ZCTP, 700, 700, -1, -1, -1, {0} },
322 {EV_TIMEOUT, 700, 700, -1, 720, 720, {ACT_ICALL} },
323 {EV_BC_CLOSED, 720, 720, -1, 0, -1, {ACT_NOTIFY_BC_DOWN} },
326 {EV_ACCEPT, -1, -1, -1, -1, -1, {ACT_ACCEPT} },
327 {RSP_INIT, 720, 720, SEQ_ACCEPT, 721, 5, {ACT_CMD + AT_PROTO} },
328 {RSP_OK, 721, 721, -1, 722, 5, {ACT_CMD + AT_ISO} },
329 {RSP_OK, 722, 722, -1, 723, 5, {0}, "+VLS=17\r"},
330 {RSP_OK, 723, 723, -1, 724, 5, {0} },
331 {RSP_ZVLS, 724, 724, 17, 750, 50, {ACT_ACCEPTED} },
332 {RSP_ERROR, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT} },
333 {EV_TIMEOUT, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT} },
334 {RSP_ZSAU, 700, 729, ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT} },
335 {RSP_ZSAU, 700, 729, ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT} },
336 {RSP_ZSAU, 700, 729, ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT} },
338 {EV_BC_OPEN, 750, 750, -1, 751, -1},
339 {EV_TIMEOUT, 750, 751, -1, 0, 0, {ACT_CONNTIMEOUT} },
341 /* B channel closed (general case) */
342 {EV_BC_CLOSED, -1, -1, -1, -1, -1, {ACT_NOTIFY_BC_DOWN} },
345 {RSP_ZCON, -1, -1, -1, -1, -1, {ACT_DEBUG} },
346 {RSP_ZCAU, -1, -1, -1, -1, -1, {ACT_ZCAU} },
347 {RSP_NONE, -1, -1, -1, -1, -1, {ACT_DEBUG} },
348 {RSP_ANY, -1, -1, -1, -1, -1, {ACT_WARN} },
353 static const struct resp_type_t {
360 {"OK", RSP_OK, RT_NOTHING},
361 {"ERROR", RSP_ERROR, RT_NOTHING},
362 {"ZSAU", RSP_ZSAU, RT_ZSAU},
363 {"ZCAU", RSP_ZCAU, RT_ZCAU},
364 {"RING", RSP_RING, RT_RING},
365 {"ZGCI", RSP_ZGCI, RT_NUMBER},
366 {"ZVLS", RSP_ZVLS, RT_NUMBER},
367 {"ZCTP", RSP_ZCTP, RT_NUMBER},
368 {"ZDLE", RSP_ZDLE, RT_NUMBER},
369 {"ZHLC", RSP_ZHLC, RT_STRING},
370 {"ZBC", RSP_ZBC, RT_STRING},
371 {"NMBR", RSP_NMBR, RT_STRING},
372 {"ZCPN", RSP_ZCPN, RT_STRING},
373 {"ZCON", RSP_ZCON, RT_STRING},
377 static const struct zsau_resp_t {
383 {"OUTGOING_CALL_PROCEEDING", ZSAU_PROCEEDING},
384 {"CALL_DELIVERED", ZSAU_CALL_DELIVERED},
385 {"ACTIVE", ZSAU_ACTIVE},
386 {"DISCONNECT_IND", ZSAU_DISCONNECT_IND},
388 {"DISCONNECT_REQ", ZSAU_DISCONNECT_REQ},
392 /* retrieve CID from parsed response
393 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
395 static int cid_of_response(char *s)
401 return 0; /* no CID separator */
402 rc = kstrtoint(s, 10, &cid);
404 return 0; /* CID not numeric */
405 if (cid < 1 || cid > 65535)
406 return -1; /* CID out of range */
411 * gigaset_handle_modem_response() - process received modem response
412 * @cs: device descriptor structure.
414 * Called by asyncdata/isocdata if a block of data received from the
415 * device must be processed as a modem command response. The data is
416 * already in the cs structure.
418 void gigaset_handle_modem_response(struct cardstate *cs)
420 unsigned char *argv[MAX_REC_PARAMS + 1];
423 const struct resp_type_t *rt;
424 const struct zsau_resp_t *zr;
427 unsigned next, tail, head;
428 struct event_t *event;
438 /* ignore additional LFs/CRs (M10x config mode or cx100) */
439 gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[0]);
442 cs->respdata[len] = 0;
443 argv[0] = cs->respdata;
445 if (cs->at_state.getstring) {
446 /* getstring only allowed without cid at the moment */
447 cs->at_state.getstring = 0;
452 for (i = 0; i < len; i++)
453 switch (cs->respdata[i]) {
457 if (params > MAX_REC_PARAMS) {
459 "too many parameters in response\n");
460 /* need last parameter (might be CID) */
463 argv[params++] = cs->respdata + i + 1;
467 cid = params > 1 ? cid_of_response(argv[params - 1]) : 0;
469 gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
474 for (j = 1; j < params; ++j)
477 gig_dbg(DEBUG_EVENT, "CMD received: %s", argv[0]);
480 gig_dbg(DEBUG_EVENT, "CID: %s", argv[params]);
482 gig_dbg(DEBUG_EVENT, "available params: %d", params - 1);
483 for (j = 1; j < params; j++)
484 gig_dbg(DEBUG_EVENT, "param %d: %s", j, argv[j]);
487 spin_lock_irqsave(&cs->ev_lock, flags);
493 while (curarg < params) {
494 next = (tail + 1) % MAX_EVENTS;
495 if (unlikely(next == head)) {
496 dev_err(cs->dev, "event queue full\n");
500 event = cs->events + tail;
501 event->at_state = NULL;
508 resp_code = RSP_STRING;
509 param_type = RT_STRING;
511 for (rt = resp_type; rt->response; ++rt)
512 if (!strcmp(argv[curarg], rt->response))
516 event->type = RSP_NONE;
518 "unknown modem response: '%s'\n",
523 resp_code = rt->resp_code;
524 param_type = rt->type;
528 event->type = resp_code;
530 switch (param_type) {
536 "received RING without CID!\n");
537 event->type = RSP_INVAL;
541 event->parameter = cid;
546 if (curarg >= params) {
547 event->parameter = ZSAU_NONE;
550 for (zr = zsau_resp; zr->str; ++zr)
551 if (!strcmp(argv[curarg], zr->str))
553 event->parameter = zr->code;
556 "%s: unknown parameter %s after ZSAU\n",
557 __func__, argv[curarg]);
561 if (curarg < params) {
562 event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
564 dev_err(cs->dev, "out of memory\n");
567 gig_dbg(DEBUG_EVENT, "string==%s",
568 event->ptr ? (char *) event->ptr : "NULL");
571 event->parameter = -1;
572 if (curarg + 1 < params) {
575 i = kstrtou8(argv[curarg++], 16, &type);
576 j = kstrtou8(argv[curarg++], 16, &value);
577 if (i == 0 && j == 0)
578 event->parameter = (type << 8) | value;
583 if (curarg >= params ||
584 kstrtoint(argv[curarg++], 10, &event->parameter))
585 event->parameter = -1;
586 gig_dbg(DEBUG_EVENT, "parameter==%d", event->parameter);
590 if (resp_code == RSP_ZDLE)
591 cs->dle = event->parameter;
598 spin_unlock_irqrestore(&cs->ev_lock, flags);
600 if (curarg != params)
602 "invalid number of processed parameters: %d/%d",
605 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
608 * process closing of connection associated with given AT state structure
611 static void disconnect_nobc(struct at_state_t **at_state_p,
612 struct cardstate *cs)
616 spin_lock_irqsave(&cs->lock, flags);
617 ++(*at_state_p)->seq_index;
619 /* revert to selected idle mode */
621 cs->at_state.pending_commands |= PC_UMMODE;
622 gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
623 cs->commands_pending = 1;
626 /* check for and deallocate temporary AT state */
627 if (!list_empty(&(*at_state_p)->list)) {
628 list_del(&(*at_state_p)->list);
633 spin_unlock_irqrestore(&cs->lock, flags);
637 * process closing of connection associated with given AT state structure
640 static void disconnect_bc(struct at_state_t *at_state,
641 struct cardstate *cs, struct bc_state *bcs)
645 spin_lock_irqsave(&cs->lock, flags);
646 ++at_state->seq_index;
648 /* revert to selected idle mode */
650 cs->at_state.pending_commands |= PC_UMMODE;
651 gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
652 cs->commands_pending = 1;
654 spin_unlock_irqrestore(&cs->lock, flags);
656 /* invoke hardware specific handler */
657 cs->ops->close_bchannel(bcs);
660 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
661 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
662 gigaset_isdn_hupD(bcs);
667 * get a free AT state structure: either one of those associated with the
668 * B channels of the Gigaset device, or if none of those is available,
669 * a newly allocated one with bcs=NULL
670 * The structure should be freed by calling disconnect_nobc() after use.
672 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
674 /* cids: >0: siemens-cid
676 * -1: no cid assigned yet
681 struct at_state_t *ret;
683 for (i = 0; i < cs->channels; ++i)
684 if (gigaset_get_channel(cs->bcs + i) >= 0) {
685 ret = &cs->bcs[i].at_state;
690 spin_lock_irqsave(&cs->lock, flags);
691 ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
693 gigaset_at_init(ret, NULL, cs, cid);
694 list_add(&ret->list, &cs->temp_at_states);
696 spin_unlock_irqrestore(&cs->lock, flags);
700 static void init_failed(struct cardstate *cs, int mode)
703 struct at_state_t *at_state;
705 cs->at_state.pending_commands &= ~PC_INIT;
707 cs->mstate = MS_UNINITIALIZED;
708 gigaset_free_channels(cs);
709 for (i = 0; i < cs->channels; ++i) {
710 at_state = &cs->bcs[i].at_state;
711 if (at_state->pending_commands & PC_CID) {
712 at_state->pending_commands &= ~PC_CID;
713 at_state->pending_commands |= PC_NOCID;
714 cs->commands_pending = 1;
719 static void schedule_init(struct cardstate *cs, int state)
721 if (cs->at_state.pending_commands & PC_INIT) {
722 gig_dbg(DEBUG_EVENT, "not scheduling PC_INIT again");
726 cs->mode = M_UNKNOWN;
727 gigaset_block_channels(cs);
728 cs->at_state.pending_commands |= PC_INIT;
729 gig_dbg(DEBUG_EVENT, "Scheduling PC_INIT");
730 cs->commands_pending = 1;
733 /* send an AT command
734 * adding the "AT" prefix, cid and DLE encapsulation as appropriate
736 static void send_command(struct cardstate *cs, const char *cmd,
737 struct at_state_t *at_state)
739 int cid = at_state->cid;
743 buflen = strlen(cmd) + 12; /* DLE ( A T 1 2 3 4 5 <cmd> DLE ) \0 */
744 cb = kmalloc(sizeof(struct cmdbuf_t) + buflen, GFP_ATOMIC);
746 dev_err(cs->dev, "%s: out of memory\n", __func__);
749 if (cid > 0 && cid <= 65535)
750 cb->len = snprintf(cb->buf, buflen,
751 cs->dle ? "\020(AT%d%s\020)" : "AT%d%s",
754 cb->len = snprintf(cb->buf, buflen,
755 cs->dle ? "\020(AT%s\020)" : "AT%s",
759 cb->wake_tasklet = NULL;
760 cs->ops->write_cmd(cs, cb);
763 static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
765 struct at_state_t *at_state;
770 return &cs->at_state;
772 for (i = 0; i < cs->channels; ++i)
773 if (cid == cs->bcs[i].at_state.cid)
774 return &cs->bcs[i].at_state;
776 spin_lock_irqsave(&cs->lock, flags);
778 list_for_each_entry(at_state, &cs->temp_at_states, list)
779 if (cid == at_state->cid) {
780 spin_unlock_irqrestore(&cs->lock, flags);
784 spin_unlock_irqrestore(&cs->lock, flags);
789 static void bchannel_down(struct bc_state *bcs)
791 if (bcs->chstate & CHS_B_UP) {
792 bcs->chstate &= ~CHS_B_UP;
793 gigaset_isdn_hupB(bcs);
796 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
797 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
798 gigaset_isdn_hupD(bcs);
801 gigaset_free_channel(bcs);
803 gigaset_bcs_reinit(bcs);
806 static void bchannel_up(struct bc_state *bcs)
808 if (bcs->chstate & CHS_B_UP) {
809 dev_notice(bcs->cs->dev, "%s: B channel already up\n",
814 bcs->chstate |= CHS_B_UP;
815 gigaset_isdn_connB(bcs);
818 static void start_dial(struct at_state_t *at_state, void *data,
821 struct bc_state *bcs = at_state->bcs;
822 struct cardstate *cs = at_state->cs;
823 char **commands = data;
827 bcs->chstate |= CHS_NOTIFY_LL;
829 spin_lock_irqsave(&cs->lock, flags);
830 if (at_state->seq_index != seq_index) {
831 spin_unlock_irqrestore(&cs->lock, flags);
834 spin_unlock_irqrestore(&cs->lock, flags);
836 for (i = 0; i < AT_NUM; ++i) {
837 kfree(bcs->commands[i]);
838 bcs->commands[i] = commands[i];
841 at_state->pending_commands |= PC_CID;
842 gig_dbg(DEBUG_EVENT, "Scheduling PC_CID");
843 cs->commands_pending = 1;
847 for (i = 0; i < AT_NUM; ++i) {
851 at_state->pending_commands |= PC_NOCID;
852 gig_dbg(DEBUG_EVENT, "Scheduling PC_NOCID");
853 cs->commands_pending = 1;
857 static void start_accept(struct at_state_t *at_state)
859 struct cardstate *cs = at_state->cs;
860 struct bc_state *bcs = at_state->bcs;
863 for (i = 0; i < AT_NUM; ++i) {
864 kfree(bcs->commands[i]);
865 bcs->commands[i] = NULL;
868 bcs->commands[AT_PROTO] = kmalloc(9, GFP_ATOMIC);
869 bcs->commands[AT_ISO] = kmalloc(9, GFP_ATOMIC);
870 if (!bcs->commands[AT_PROTO] || !bcs->commands[AT_ISO]) {
871 dev_err(at_state->cs->dev, "out of memory\n");
873 at_state->pending_commands |= PC_HUP;
874 gig_dbg(DEBUG_EVENT, "Scheduling PC_HUP");
875 cs->commands_pending = 1;
879 snprintf(bcs->commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2);
880 snprintf(bcs->commands[AT_ISO], 9, "^SISO=%u\r", bcs->channel + 1);
882 at_state->pending_commands |= PC_ACCEPT;
883 gig_dbg(DEBUG_EVENT, "Scheduling PC_ACCEPT");
884 cs->commands_pending = 1;
887 static void do_start(struct cardstate *cs)
889 gigaset_free_channels(cs);
891 if (cs->mstate != MS_LOCKED)
892 schedule_init(cs, MS_INIT);
895 gigaset_isdn_start(cs);
898 wake_up(&cs->waitqueue);
901 static void finish_shutdown(struct cardstate *cs)
903 if (cs->mstate != MS_LOCKED) {
904 cs->mstate = MS_UNINITIALIZED;
905 cs->mode = M_UNKNOWN;
908 /* Tell the LL that the device is not available .. */
911 gigaset_isdn_stop(cs);
914 /* The rest is done by cleanup_cs() in process context. */
916 cs->cmd_result = -ENODEV;
918 wake_up(&cs->waitqueue);
921 static void do_shutdown(struct cardstate *cs)
923 gigaset_block_channels(cs);
925 if (cs->mstate == MS_READY) {
926 cs->mstate = MS_SHUTDOWN;
927 cs->at_state.pending_commands |= PC_SHUTDOWN;
928 gig_dbg(DEBUG_EVENT, "Scheduling PC_SHUTDOWN");
929 cs->commands_pending = 1;
934 static void do_stop(struct cardstate *cs)
938 spin_lock_irqsave(&cs->lock, flags);
940 spin_unlock_irqrestore(&cs->lock, flags);
945 /* Entering cid mode or getting a cid failed:
946 * try to initialize the device and try again.
948 * channel >= 0: getting cid for the channel failed
949 * channel < 0: entering cid mode failed
951 * returns 0 on success, <0 on failure
953 static int reinit_and_retry(struct cardstate *cs, int channel)
957 if (--cs->retry_count <= 0)
960 for (i = 0; i < cs->channels; ++i)
961 if (cs->bcs[i].at_state.cid > 0)
966 "Could not enter cid mode. Reinit device and try again.\n");
969 "Could not get a call id. Reinit device and try again.\n");
970 cs->bcs[channel].at_state.pending_commands |= PC_CID;
972 schedule_init(cs, MS_INIT);
976 static int at_state_invalid(struct cardstate *cs,
977 struct at_state_t *test_ptr)
981 struct at_state_t *at_state;
984 spin_lock_irqsave(&cs->lock, flags);
986 if (test_ptr == &cs->at_state)
989 list_for_each_entry(at_state, &cs->temp_at_states, list)
990 if (at_state == test_ptr)
993 for (channel = 0; channel < cs->channels; ++channel)
994 if (&cs->bcs[channel].at_state == test_ptr)
999 spin_unlock_irqrestore(&cs->lock, flags);
1003 static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1004 struct at_state_t *at_state)
1008 retval = gigaset_isdn_icall(at_state);
1013 dev_err(cs->dev, "internal error: disposition=%d\n", retval);
1014 /* --v-- fall through --v-- */
1018 * Device doc says that would reject the call.
1019 * In fact it doesn't.
1021 at_state->pending_commands |= PC_HUP;
1022 cs->commands_pending = 1;
1027 static int do_lock(struct cardstate *cs)
1032 switch (cs->mstate) {
1033 case MS_UNINITIALIZED:
1035 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1036 cs->at_state.pending_commands)
1039 for (i = 0; i < cs->channels; ++i)
1040 if (cs->bcs[i].at_state.pending_commands)
1043 if (gigaset_get_channels(cs) < 0)
1054 cs->mstate = MS_LOCKED;
1055 cs->mode = M_UNKNOWN;
1060 static int do_unlock(struct cardstate *cs)
1062 if (cs->mstate != MS_LOCKED)
1065 cs->mstate = MS_UNINITIALIZED;
1066 cs->mode = M_UNKNOWN;
1067 gigaset_free_channels(cs);
1069 schedule_init(cs, MS_INIT);
1074 static void do_action(int action, struct cardstate *cs,
1075 struct bc_state *bcs,
1076 struct at_state_t **p_at_state, char **pp_command,
1077 int *p_genresp, int *p_resp_code,
1080 struct at_state_t *at_state = *p_at_state;
1081 struct bc_state *bcs2;
1082 unsigned long flags;
1086 unsigned char *s, *e;
1094 at_state->waiting = 1;
1097 cs->at_state.pending_commands &= ~PC_INIT;
1098 cs->cur_at_seq = SEQ_NONE;
1099 cs->mode = M_UNIMODEM;
1100 spin_lock_irqsave(&cs->lock, flags);
1102 spin_unlock_irqrestore(&cs->lock, flags);
1103 gigaset_free_channels(cs);
1104 cs->mstate = MS_READY;
1107 spin_unlock_irqrestore(&cs->lock, flags);
1108 cs->at_state.pending_commands |= PC_CIDMODE;
1109 gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
1110 cs->commands_pending = 1;
1113 dev_warn(cs->dev, "Could not initialize the device.\n");
1115 init_failed(cs, M_UNKNOWN);
1116 cs->cur_at_seq = SEQ_NONE;
1118 case ACT_CONFIGMODE:
1119 init_failed(cs, M_CONFIG);
1120 cs->cur_at_seq = SEQ_NONE;
1124 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1125 cs->inbuf[0].inputstate &=
1126 ~(INS_command | INS_DLE_command);
1130 cs->inbuf[0].inputstate =
1131 (cs->inbuf[0].inputstate & ~INS_DLE_command)
1135 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1136 gigaset_free_channels(cs);
1137 cs->mstate = MS_READY;
1140 cs->cur_at_seq = SEQ_NONE;
1143 cs->mode = M_UNIMODEM;
1144 cs->cur_at_seq = SEQ_NONE;
1147 cs->cur_at_seq = SEQ_NONE;
1148 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1149 init_failed(cs, M_UNKNOWN);
1152 if (reinit_and_retry(cs, -1) < 0)
1153 schedule_init(cs, MS_RECOVER);
1156 cs->cur_at_seq = SEQ_NONE;
1157 schedule_init(cs, MS_RECOVER);
1160 /* send "+++" (hangup in unimodem mode) */
1161 if (cs->connected) {
1162 struct cmdbuf_t *cb;
1164 cb = kmalloc(sizeof(struct cmdbuf_t) + 3, GFP_ATOMIC);
1166 dev_err(cs->dev, "%s: out of memory\n",
1170 memcpy(cb->buf, "+++", 3);
1174 cb->wake_tasklet = NULL;
1175 cs->ops->write_cmd(cs, cb);
1179 /* get fresh AT state structure for new CID */
1180 at_state = get_free_channel(cs, ev->parameter);
1183 "RING ignored: could not allocate channel structure\n");
1187 /* initialize AT state structure
1188 * note that bcs may be NULL if no B channel is free
1190 at_state->ConState = 700;
1191 for (i = 0; i < STR_NUM; ++i) {
1192 kfree(at_state->str_var[i]);
1193 at_state->str_var[i] = NULL;
1195 at_state->int_var[VAR_ZCTP] = -1;
1197 spin_lock_irqsave(&cs->lock, flags);
1198 at_state->timer_expires = RING_TIMEOUT;
1199 at_state->timer_active = 1;
1200 spin_unlock_irqrestore(&cs->lock, flags);
1203 handle_icall(cs, bcs, at_state);
1206 dev_warn(cs->dev, "Could not shut down the device.\n");
1210 cs->cur_at_seq = SEQ_NONE;
1211 finish_shutdown(cs);
1214 if (cs->onechannel) {
1215 at_state->pending_commands |= PC_DLE1;
1216 cs->commands_pending = 1;
1219 bcs->chstate |= CHS_D_UP;
1220 gigaset_isdn_connD(bcs);
1221 cs->ops->init_bchannel(bcs);
1224 cs->cur_at_seq = SEQ_NONE;
1225 bcs = cs->bcs + cs->curchannel;
1227 bcs->chstate |= CHS_D_UP;
1228 gigaset_isdn_connD(bcs);
1229 cs->ops->init_bchannel(bcs);
1232 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1234 case ACT_DISCONNECT:
1235 cs->cur_at_seq = SEQ_NONE;
1238 disconnect_nobc(p_at_state, cs);
1239 } else if (cs->onechannel && cs->dle) {
1240 /* Check for other open channels not needed:
1241 * DLE only used for M10x with one B channel.
1243 at_state->pending_commands |= PC_DLE0;
1244 cs->commands_pending = 1;
1246 disconnect_bc(at_state, cs, bcs);
1250 at_state->int_var[VAR_ZDLE] = 0;
1254 cs->cur_at_seq = SEQ_NONE;
1255 bcs2 = cs->bcs + cs->curchannel;
1256 disconnect_bc(&bcs2->at_state, cs, bcs2);
1259 cs->cur_at_seq = SEQ_NONE;
1260 dev_warn(cs->dev, "Could not hang up.\n");
1263 disconnect_nobc(p_at_state, cs);
1264 else if (cs->onechannel)
1265 at_state->pending_commands |= PC_DLE0;
1267 disconnect_bc(at_state, cs, bcs);
1268 schedule_init(cs, MS_RECOVER);
1271 cs->cur_at_seq = SEQ_NONE;
1272 dev_warn(cs->dev, "Error leaving DLE mode.\n");
1274 bcs2 = cs->bcs + cs->curchannel;
1275 disconnect_bc(&bcs2->at_state, cs, bcs2);
1276 schedule_init(cs, MS_RECOVER);
1279 cs->cur_at_seq = SEQ_NONE;
1281 "Could not enter DLE mode. Trying to hang up.\n");
1282 channel = cs->curchannel;
1283 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1284 cs->commands_pending = 1;
1287 case ACT_CID: /* got cid; start dialing */
1288 cs->cur_at_seq = SEQ_NONE;
1289 channel = cs->curchannel;
1290 if (ev->parameter > 0 && ev->parameter <= 65535) {
1291 cs->bcs[channel].at_state.cid = ev->parameter;
1292 cs->bcs[channel].at_state.pending_commands |=
1294 cs->commands_pending = 1;
1297 /* bad cid: fall through */
1299 cs->cur_at_seq = SEQ_NONE;
1300 channel = cs->curchannel;
1301 if (reinit_and_retry(cs, channel) < 0) {
1303 "Could not get a call ID. Cannot dial.\n");
1304 bcs2 = cs->bcs + channel;
1305 disconnect_bc(&bcs2->at_state, cs, bcs2);
1309 cs->cur_at_seq = SEQ_NONE;
1310 bcs2 = cs->bcs + cs->curchannel;
1311 disconnect_bc(&bcs2->at_state, cs, bcs2);
1316 cs->cur_at_seq = SEQ_NONE;
1319 case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL procssng */
1321 disconnect_bc(at_state, cs, bcs);
1323 disconnect_nobc(p_at_state, cs);
1326 case ACT_ABORTDIAL: /* error/timeout during dial preparation */
1327 cs->cur_at_seq = SEQ_NONE;
1328 at_state->pending_commands |= PC_HUP;
1329 cs->commands_pending = 1;
1332 case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
1333 case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
1334 case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
1335 at_state->pending_commands |= PC_HUP;
1336 cs->commands_pending = 1;
1338 case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1339 are not handled properly anymore */
1340 at_state->getstring = 1;
1345 *p_resp_code = RSP_ERROR;
1350 if (!strcmp(s, "OK")) {
1351 /* OK without version string: assume old response */
1353 *p_resp_code = RSP_NONE;
1357 for (i = 0; i < 4; ++i) {
1358 val = simple_strtoul(s, (char **) &e, 10);
1359 if (val > INT_MAX || e == s)
1364 } else if (*e != '.')
1372 *p_resp_code = RSP_ERROR;
1378 if (cs->gotfwver == 0) {
1380 gig_dbg(DEBUG_EVENT,
1381 "firmware version %02d.%03d.%02d.%02d",
1382 cs->fwver[0], cs->fwver[1],
1383 cs->fwver[2], cs->fwver[3]);
1389 dev_err(cs->dev, "could not read firmware version.\n");
1392 gig_dbg(DEBUG_ANY, "%s: ERROR response in ConState %d",
1393 __func__, at_state->ConState);
1394 cs->cur_at_seq = SEQ_NONE;
1397 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1398 __func__, ev->type, at_state->ConState);
1401 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1402 __func__, ev->type, at_state->ConState);
1405 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1406 ev->parameter, at_state->ConState);
1409 /* events from the LL */
1414 *p_resp_code = RSP_ERROR;
1417 start_dial(at_state, ev->ptr, ev->parameter);
1420 start_accept(at_state);
1423 at_state->pending_commands |= PC_HUP;
1424 gig_dbg(DEBUG_EVENT, "Scheduling PC_HUP");
1425 cs->commands_pending = 1;
1428 /* hotplug events */
1437 /* events from the interface */
1440 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1442 wake_up(&cs->waitqueue);
1445 if (ev->parameter != 0)
1446 cs->cmd_result = -EINVAL;
1447 else if (cs->gotfwver != 1) {
1448 cs->cmd_result = -ENOENT;
1450 memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1454 wake_up(&cs->waitqueue);
1457 /* events from the proc file system */
1459 case ACT_PROC_CIDMODE:
1460 spin_lock_irqsave(&cs->lock, flags);
1461 if (ev->parameter != cs->cidmode) {
1462 cs->cidmode = ev->parameter;
1463 if (ev->parameter) {
1464 cs->at_state.pending_commands |= PC_CIDMODE;
1465 gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
1467 cs->at_state.pending_commands |= PC_UMMODE;
1468 gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
1470 cs->commands_pending = 1;
1472 spin_unlock_irqrestore(&cs->lock, flags);
1474 wake_up(&cs->waitqueue);
1477 /* events from the hardware drivers */
1479 case ACT_NOTIFY_BC_DOWN:
1482 case ACT_NOTIFY_BC_UP:
1491 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1492 *pp_command = at_state->bcs->commands[action - ACT_CMD];
1495 *p_resp_code = RSP_NULL;
1498 dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
1502 /* State machine to do the calling and hangup procedure */
1503 static void process_event(struct cardstate *cs, struct event_t *ev)
1505 struct bc_state *bcs;
1506 char *p_command = NULL;
1507 struct reply_t *rep;
1510 int resp_code = RSP_ERROR;
1511 struct at_state_t *at_state;
1514 unsigned long flags;
1517 at_state = at_state_from_cid(cs, ev->cid);
1519 gig_dbg(DEBUG_EVENT, "event %d for invalid cid %d",
1521 gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1526 at_state = ev->at_state;
1527 if (at_state_invalid(cs, at_state)) {
1528 gig_dbg(DEBUG_EVENT, "event for invalid at_state %p",
1534 gig_dbg(DEBUG_EVENT, "connection state %d, event %d",
1535 at_state->ConState, ev->type);
1537 bcs = at_state->bcs;
1539 /* Setting the pointer to the dial array */
1540 rep = at_state->replystruct;
1542 spin_lock_irqsave(&cs->lock, flags);
1543 if (ev->type == EV_TIMEOUT) {
1544 if (ev->parameter != at_state->timer_index
1545 || !at_state->timer_active) {
1546 ev->type = RSP_NONE; /* old timeout */
1547 gig_dbg(DEBUG_EVENT, "old timeout");
1549 if (at_state->waiting)
1550 gig_dbg(DEBUG_EVENT, "stopped waiting");
1552 gig_dbg(DEBUG_EVENT, "timeout occurred");
1555 spin_unlock_irqrestore(&cs->lock, flags);
1557 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1558 or at_state->str_var[STR_XXXX], set it */
1559 if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1560 index = ev->type - RSP_VAR;
1561 at_state->int_var[index] = ev->parameter;
1562 } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1563 index = ev->type - RSP_STR;
1564 kfree(at_state->str_var[index]);
1565 at_state->str_var[index] = ev->ptr;
1566 ev->ptr = NULL; /* prevent process_events() from
1570 if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1571 at_state->getstring = 0;
1573 /* Search row in dial array which matches modem response and current
1576 rcode = rep->resp_code;
1577 if (rcode == RSP_LAST) {
1578 /* found nothing...*/
1579 dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1580 "resp_code %d in ConState %d!\n",
1581 __func__, ev->type, at_state->ConState);
1584 if ((rcode == RSP_ANY || rcode == ev->type)
1585 && ((int) at_state->ConState >= rep->min_ConState)
1586 && (rep->max_ConState < 0
1587 || (int) at_state->ConState <= rep->max_ConState)
1588 && (rep->parameter < 0 || rep->parameter == ev->parameter))
1592 p_command = rep->command;
1594 at_state->waiting = 0;
1595 for (curact = 0; curact < MAXACT; ++curact) {
1596 /* The row tells us what we should do ..
1598 do_action(rep->action[curact], cs, bcs, &at_state, &p_command,
1599 &genresp, &resp_code, ev);
1601 /* at_state destroyed by disconnect */
1605 /* Jump to the next con-state regarding the array */
1606 if (rep->new_ConState >= 0)
1607 at_state->ConState = rep->new_ConState;
1610 spin_lock_irqsave(&cs->lock, flags);
1611 at_state->timer_expires = 0;
1612 at_state->timer_active = 0;
1613 spin_unlock_irqrestore(&cs->lock, flags);
1614 gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
1616 /* Send command to modem if not NULL... */
1619 send_command(cs, p_command, at_state);
1621 gigaset_add_event(cs, at_state, RSP_NODEV,
1625 spin_lock_irqsave(&cs->lock, flags);
1626 if (!rep->timeout) {
1627 at_state->timer_expires = 0;
1628 at_state->timer_active = 0;
1629 } else if (rep->timeout > 0) { /* new timeout */
1630 at_state->timer_expires = rep->timeout * 10;
1631 at_state->timer_active = 1;
1632 ++at_state->timer_index;
1634 spin_unlock_irqrestore(&cs->lock, flags);
1638 static void schedule_sequence(struct cardstate *cs,
1639 struct at_state_t *at_state, int sequence)
1641 cs->cur_at_seq = sequence;
1642 gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1645 static void process_command_flags(struct cardstate *cs)
1647 struct at_state_t *at_state = NULL;
1648 struct bc_state *bcs;
1651 unsigned long flags;
1653 cs->commands_pending = 0;
1655 if (cs->cur_at_seq) {
1656 gig_dbg(DEBUG_EVENT, "not searching scheduled commands: busy");
1660 gig_dbg(DEBUG_EVENT, "searching scheduled commands");
1662 sequence = SEQ_NONE;
1664 /* clear pending_commands and hangup channels on shutdown */
1665 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1666 cs->at_state.pending_commands &= ~PC_CIDMODE;
1667 for (i = 0; i < cs->channels; ++i) {
1669 at_state = &bcs->at_state;
1670 at_state->pending_commands &=
1671 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1672 if (at_state->cid > 0)
1673 at_state->pending_commands |= PC_HUP;
1674 if (at_state->pending_commands & PC_CID) {
1675 at_state->pending_commands |= PC_NOCID;
1676 at_state->pending_commands &= ~PC_CID;
1681 /* clear pending_commands and hangup channels on reset */
1682 if (cs->at_state.pending_commands & PC_INIT) {
1683 cs->at_state.pending_commands &= ~PC_CIDMODE;
1684 for (i = 0; i < cs->channels; ++i) {
1686 at_state = &bcs->at_state;
1687 at_state->pending_commands &=
1688 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1689 if (at_state->cid > 0)
1690 at_state->pending_commands |= PC_HUP;
1691 if (cs->mstate == MS_RECOVER) {
1692 if (at_state->pending_commands & PC_CID) {
1693 at_state->pending_commands |= PC_NOCID;
1694 at_state->pending_commands &= ~PC_CID;
1700 /* only switch back to unimodem mode if no commands are pending and
1701 * no channels are up */
1702 spin_lock_irqsave(&cs->lock, flags);
1703 if (cs->at_state.pending_commands == PC_UMMODE
1705 && list_empty(&cs->temp_at_states)
1706 && cs->mode == M_CID) {
1707 sequence = SEQ_UMMODE;
1708 at_state = &cs->at_state;
1709 for (i = 0; i < cs->channels; ++i) {
1711 if (bcs->at_state.pending_commands ||
1712 bcs->at_state.cid > 0) {
1713 sequence = SEQ_NONE;
1718 spin_unlock_irqrestore(&cs->lock, flags);
1719 cs->at_state.pending_commands &= ~PC_UMMODE;
1720 if (sequence != SEQ_NONE) {
1721 schedule_sequence(cs, at_state, sequence);
1725 for (i = 0; i < cs->channels; ++i) {
1727 if (bcs->at_state.pending_commands & PC_HUP) {
1729 cs->curchannel = bcs->channel;
1730 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1733 bcs->at_state.pending_commands &= ~PC_HUP;
1734 if (bcs->at_state.pending_commands & PC_CID) {
1735 /* not yet dialing: PC_NOCID is sufficient */
1736 bcs->at_state.pending_commands |= PC_NOCID;
1737 bcs->at_state.pending_commands &= ~PC_CID;
1739 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1743 if (bcs->at_state.pending_commands & PC_NOCID) {
1744 bcs->at_state.pending_commands &= ~PC_NOCID;
1745 cs->curchannel = bcs->channel;
1746 schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1748 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1749 bcs->at_state.pending_commands &= ~PC_DLE0;
1750 cs->curchannel = bcs->channel;
1751 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1756 list_for_each_entry(at_state, &cs->temp_at_states, list)
1757 if (at_state->pending_commands & PC_HUP) {
1758 at_state->pending_commands &= ~PC_HUP;
1759 schedule_sequence(cs, at_state, SEQ_HUP);
1763 if (cs->at_state.pending_commands & PC_INIT) {
1764 cs->at_state.pending_commands &= ~PC_INIT;
1766 cs->inbuf->inputstate = INS_command;
1767 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1770 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1771 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1772 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1775 if (cs->at_state.pending_commands & PC_CIDMODE) {
1776 cs->at_state.pending_commands &= ~PC_CIDMODE;
1777 if (cs->mode == M_UNIMODEM) {
1778 cs->retry_count = 1;
1779 schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1784 for (i = 0; i < cs->channels; ++i) {
1786 if (bcs->at_state.pending_commands & PC_DLE1) {
1787 bcs->at_state.pending_commands &= ~PC_DLE1;
1788 cs->curchannel = bcs->channel;
1789 schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1792 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1793 bcs->at_state.pending_commands &= ~PC_ACCEPT;
1794 schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1797 if (bcs->at_state.pending_commands & PC_DIAL) {
1798 bcs->at_state.pending_commands &= ~PC_DIAL;
1799 schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1802 if (bcs->at_state.pending_commands & PC_CID) {
1805 cs->at_state.pending_commands |= PC_CIDMODE;
1806 gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
1807 cs->commands_pending = 1;
1810 schedule_init(cs, MS_INIT);
1813 bcs->at_state.pending_commands &= ~PC_CID;
1814 cs->curchannel = bcs->channel;
1815 cs->retry_count = 2;
1816 schedule_sequence(cs, &cs->at_state, SEQ_CID);
1822 static void process_events(struct cardstate *cs)
1825 unsigned head, tail;
1827 int check_flags = 0;
1829 unsigned long flags;
1831 spin_lock_irqsave(&cs->ev_lock, flags);
1834 for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1837 if (!check_flags && !cs->commands_pending)
1840 spin_unlock_irqrestore(&cs->ev_lock, flags);
1841 process_command_flags(cs);
1842 spin_lock_irqsave(&cs->ev_lock, flags);
1845 if (!cs->commands_pending)
1851 ev = cs->events + head;
1852 was_busy = cs->cur_at_seq != SEQ_NONE;
1853 spin_unlock_irqrestore(&cs->ev_lock, flags);
1854 process_event(cs, ev);
1855 spin_lock_irqsave(&cs->ev_lock, flags);
1858 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1861 head = (head + 1) % MAX_EVENTS;
1865 spin_unlock_irqrestore(&cs->ev_lock, flags);
1867 if (i == 2 * MAX_EVENTS) {
1869 "infinite loop in process_events; aborting.\n");
1873 /* tasklet scheduled on any event received from the Gigaset device
1875 * data ISDN controller state structure
1877 void gigaset_handle_event(unsigned long data)
1879 struct cardstate *cs = (struct cardstate *) data;
1881 /* handle incoming data on control/common channel */
1882 if (cs->inbuf->head != cs->inbuf->tail) {
1883 gig_dbg(DEBUG_INTR, "processing new data");
1884 cs->ops->handle_input(cs->inbuf);