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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / isdn / gigaset / ev-layer.c
blob5cbf64d850eefbbb4405d670d969f5938e38148e
1 /*
2 * Stuff used by all variants of the driver
3 *
4 * Copyright (c) 2001 by Stefan Eilers,
5 * Hansjoerg Lipp <hjlipp@web.de>,
6 * Tilman Schmidt <tilman@imap.cc>.
7 *
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 * =====================================================================
14 */
15
16 #include "gigaset.h"
17
18 /* ========================================================== */
19 /* bit masks for pending commands */
20 #define PC_DIAL 0x001
21 #define PC_HUP 0x002
22 #define PC_INIT 0x004
23 #define PC_DLE0 0x008
24 #define PC_DLE1 0x010
25 #define PC_SHUTDOWN 0x020
26 #define PC_ACCEPT 0x040
27 #define PC_CID 0x080
28 #define PC_NOCID 0x100
29 #define PC_CIDMODE 0x200
30 #define PC_UMMODE 0x400
31
32 /* types of modem responses */
33 #define RT_NOTHING 0
34 #define RT_ZSAU 1
35 #define RT_RING 2
36 #define RT_NUMBER 3
37 #define RT_STRING 4
38 #define RT_HEX 5
39 #define RT_ZCAU 6
40
41 /* Possible ASCII responses */
42 #define RSP_OK 0
43 //#define RSP_BUSY 1
44 //#define RSP_CONNECT 2
45 #define RSP_ZGCI 3
46 #define RSP_RING 4
47 #define RSP_ZAOC 5
48 #define RSP_ZCSTR 6
49 #define RSP_ZCFGT 7
50 #define RSP_ZCFG 8
51 #define RSP_ZCCR 9
52 #define RSP_EMPTY 10
53 #define RSP_ZLOG 11
54 #define RSP_ZCAU 12
55 #define RSP_ZMWI 13
56 #define RSP_ZABINFO 14
57 #define RSP_ZSMLSTCHG 15
58 #define RSP_VAR 100
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_EMPTY -3
72 #define RSP_UNKNOWN -4 /* unknown response */
73 #define RSP_FAIL -5 /* internal error */
74 #define RSP_INVAL -6 /* invalid response */
75
76 #define RSP_NONE -19
77 #define RSP_STRING -20
78 #define RSP_NULL -21
79 //#define RSP_RETRYFAIL -22
80 //#define RSP_RETRY -23
81 //#define RSP_SKIP -24
82 #define RSP_INIT -27
83 #define RSP_ANY -26
84 #define RSP_LAST -28
85 #define RSP_NODEV -9
86
87 /* actions for process_response */
88 #define ACT_NOTHING 0
89 #define ACT_SETDLE1 1
90 #define ACT_SETDLE0 2
91 #define ACT_FAILINIT 3
92 #define ACT_HUPMODEM 4
93 #define ACT_CONFIGMODE 5
94 #define ACT_INIT 6
95 #define ACT_DLE0 7
96 #define ACT_DLE1 8
97 #define ACT_FAILDLE0 9
98 #define ACT_FAILDLE1 10
99 #define ACT_RING 11
100 #define ACT_CID 12
101 #define ACT_FAILCID 13
102 #define ACT_SDOWN 14
103 #define ACT_FAILSDOWN 15
104 #define ACT_DEBUG 16
105 #define ACT_WARN 17
106 #define ACT_DIALING 18
107 #define ACT_ABORTDIAL 19
108 #define ACT_DISCONNECT 20
109 #define ACT_CONNECT 21
110 #define ACT_REMOTEREJECT 22
111 #define ACT_CONNTIMEOUT 23
112 #define ACT_REMOTEHUP 24
113 #define ACT_ABORTHUP 25
114 #define ACT_ICALL 26
115 #define ACT_ACCEPTED 27
116 #define ACT_ABORTACCEPT 28
117 #define ACT_TIMEOUT 29
118 #define ACT_GETSTRING 30
119 #define ACT_SETVER 31
120 #define ACT_FAILVER 32
121 #define ACT_GOTVER 33
122 #define ACT_TEST 34
123 #define ACT_ERROR 35
124 #define ACT_ABORTCID 36
125 #define ACT_ZCAU 37
126 #define ACT_NOTIFY_BC_DOWN 38
127 #define ACT_NOTIFY_BC_UP 39
128 #define ACT_DIAL 40
129 #define ACT_ACCEPT 41
130 #define ACT_PROTO_L2 42
131 #define ACT_HUP 43
132 #define ACT_IF_LOCK 44
133 #define ACT_START 45
134 #define ACT_STOP 46
135 #define ACT_FAKEDLE0 47
136 #define ACT_FAKEHUP 48
137 #define ACT_FAKESDOWN 49
138 #define ACT_SHUTDOWN 50
139 #define ACT_PROC_CIDMODE 51
140 #define ACT_UMODESET 52
141 #define ACT_FAILUMODE 53
142 #define ACT_CMODESET 54
143 #define ACT_FAILCMODE 55
144 #define ACT_IF_VER 56
145 #define ACT_CMD 100
146
147 /* at command sequences */
148 #define SEQ_NONE 0
149 #define SEQ_INIT 100
150 #define SEQ_DLE0 200
151 #define SEQ_DLE1 250
152 #define SEQ_CID 300
153 #define SEQ_NOCID 350
154 #define SEQ_HUP 400
155 #define SEQ_DIAL 600
156 #define SEQ_ACCEPT 720
157 #define SEQ_SHUTDOWN 500
158 #define SEQ_CIDMODE 10
159 #define SEQ_UMMODE 11
160
161
162 // 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid), 400: hup, 500: reset, 600: dial, 700: ring
163 struct reply_t gigaset_tab_nocid_m10x[]= /* with dle mode */
164 {
165 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
166
167 /* initialize device, set cid mode if possible */
168 //{RSP_INIT, -1, -1,100, 900, 0, {ACT_TEST}},
169 //{RSP_ERROR, 900,900, -1, 0, 0, {ACT_FAILINIT}},
170 //{RSP_OK, 900,900, -1, 100, INIT_TIMEOUT,
171 // {ACT_TIMEOUT}},
172
173 {RSP_INIT, -1, -1,SEQ_INIT, 100, INIT_TIMEOUT,
174 {ACT_TIMEOUT}}, /* wait until device is ready */
175
176 {EV_TIMEOUT, 100,100, -1, 101, 3, {0}, "Z\r"}, /* device in transparent mode? try to initialize it. */
177 {RSP_OK, 101,103, -1, 120, 5, {ACT_GETSTRING}, "+GMR\r"}, /* get version */
178
179 {EV_TIMEOUT, 101,101, -1, 102, 5, {0}, "Z\r"}, /* timeout => try once again. */
180 {RSP_ERROR, 101,101, -1, 102, 5, {0}, "Z\r"}, /* error => try once again. */
181
182 {EV_TIMEOUT, 102,102, -1, 108, 5, {ACT_SETDLE1}, "^SDLE=0\r"}, /* timeout => try again in DLE mode. */
183 {RSP_OK, 108,108, -1, 104,-1},
184 {RSP_ZDLE, 104,104, 0, 103, 5, {0}, "Z\r"},
185 {EV_TIMEOUT, 104,104, -1, 0, 0, {ACT_FAILINIT}},
186 {RSP_ERROR, 108,108, -1, 0, 0, {ACT_FAILINIT}},
187
188 {EV_TIMEOUT, 108,108, -1, 105, 2, {ACT_SETDLE0,
189 ACT_HUPMODEM,
190 ACT_TIMEOUT}}, /* still timeout => connection in unimodem mode? */
191 {EV_TIMEOUT, 105,105, -1, 103, 5, {0}, "Z\r"},
192
193 {RSP_ERROR, 102,102, -1, 107, 5, {0}, "^GETPRE\r"}, /* ERROR on ATZ => maybe in config mode? */
194 {RSP_OK, 107,107, -1, 0, 0, {ACT_CONFIGMODE}},
195 {RSP_ERROR, 107,107, -1, 0, 0, {ACT_FAILINIT}},
196 {EV_TIMEOUT, 107,107, -1, 0, 0, {ACT_FAILINIT}},
197
198 {RSP_ERROR, 103,103, -1, 0, 0, {ACT_FAILINIT}},
199 {EV_TIMEOUT, 103,103, -1, 0, 0, {ACT_FAILINIT}},
200
201 {RSP_STRING, 120,120, -1, 121,-1, {ACT_SETVER}},
202
203 {EV_TIMEOUT, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}},
204 {RSP_ERROR, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}},
205 {RSP_OK, 121,121, -1, 0, 0, {ACT_GOTVER, ACT_INIT}},
206 #if 0
207 {EV_TIMEOUT, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"},
208 {RSP_ERROR, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"},
209 {RSP_OK, 121,121, -1, 130, 5, {ACT_GOTVER}, "^SGCI=1\r"},
210
211 {RSP_OK, 130,130, -1, 0, 0, {ACT_INIT}},
212 {RSP_ERROR, 130,130, -1, 0, 0, {ACT_FAILINIT}},
213 {EV_TIMEOUT, 130,130, -1, 0, 0, {ACT_FAILINIT}},
214 #endif
215
216 /* leave dle mode */
217 {RSP_INIT, 0, 0,SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"},
218 {RSP_OK, 201,201, -1, 202,-1},
219 //{RSP_ZDLE, 202,202, 0, 202, 0, {ACT_ERROR}},//DELETE
220 {RSP_ZDLE, 202,202, 0, 0, 0, {ACT_DLE0}},
221 {RSP_NODEV, 200,249, -1, 0, 0, {ACT_FAKEDLE0}},
222 {RSP_ERROR, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
223 {EV_TIMEOUT, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
224
225 /* enter dle mode */
226 {RSP_INIT, 0, 0,SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"},
227 {RSP_OK, 251,251, -1, 252,-1},
228 {RSP_ZDLE, 252,252, 1, 0, 0, {ACT_DLE1}},
229 {RSP_ERROR, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
230 {EV_TIMEOUT, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
231
232 /* incoming call */
233 {RSP_RING, -1, -1, -1, -1,-1, {ACT_RING}},
234
235 /* get cid */
236 //{RSP_INIT, 0, 0,300, 901, 0, {ACT_TEST}},
237 //{RSP_ERROR, 901,901, -1, 0, 0, {ACT_FAILCID}},
238 //{RSP_OK, 901,901, -1, 301, 5, {0}, "^SGCI?\r"},
239
240 {RSP_INIT, 0, 0,SEQ_CID, 301, 5, {0}, "^SGCI?\r"},
241 {RSP_OK, 301,301, -1, 302,-1},
242 {RSP_ZGCI, 302,302, -1, 0, 0, {ACT_CID}},
243 {RSP_ERROR, 301,349, -1, 0, 0, {ACT_FAILCID}},
244 {EV_TIMEOUT, 301,349, -1, 0, 0, {ACT_FAILCID}},
245
246 /* enter cid mode */
247 {RSP_INIT, 0, 0,SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"},
248 {RSP_OK, 150,150, -1, 0, 0, {ACT_CMODESET}},
249 {RSP_ERROR, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
250 {EV_TIMEOUT, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
251
252 /* leave cid mode */
253 //{RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "^SGCI=0\r"},
254 {RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "Z\r"},
255 {RSP_OK, 160,160, -1, 0, 0, {ACT_UMODESET}},
256 {RSP_ERROR, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
257 {EV_TIMEOUT, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
258
259 /* abort getting cid */
260 {RSP_INIT, 0, 0,SEQ_NOCID, 0, 0, {ACT_ABORTCID}},
261
262 /* reset */
263 #if 0
264 {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 503, 5, {0}, "^SGCI=0\r"},
265 {RSP_OK, 503,503, -1, 504, 5, {0}, "Z\r"},
266 #endif
267 {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"},
268 {RSP_OK, 504,504, -1, 0, 0, {ACT_SDOWN}},
269 {RSP_ERROR, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
270 {EV_TIMEOUT, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
271 {RSP_NODEV, 501,599, -1, 0, 0, {ACT_FAKESDOWN}},
272
273 {EV_PROC_CIDMODE,-1, -1, -1, -1,-1, {ACT_PROC_CIDMODE}}, //FIXME
274 {EV_IF_LOCK, -1, -1, -1, -1,-1, {ACT_IF_LOCK}}, //FIXME
275 {EV_IF_VER, -1, -1, -1, -1,-1, {ACT_IF_VER}}, //FIXME
276 {EV_START, -1, -1, -1, -1,-1, {ACT_START}}, //FIXME
277 {EV_STOP, -1, -1, -1, -1,-1, {ACT_STOP}}, //FIXME
278 {EV_SHUTDOWN, -1, -1, -1, -1,-1, {ACT_SHUTDOWN}}, //FIXME
279
280 /* misc. */
281 {RSP_EMPTY, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
282 {RSP_ZCFGT, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
283 {RSP_ZCFG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
284 {RSP_ZLOG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
285 {RSP_ZMWI, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
286 {RSP_ZABINFO, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
287 {RSP_ZSMLSTCHG,-1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
288
289 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
290 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
291 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
292 {RSP_LAST}
293 };
294
295 // 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring, 400: hup, 750: accepted icall
296 struct reply_t gigaset_tab_cid_m10x[] = /* for M10x */
297 {
298 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
299
300 /* dial */
301 {EV_DIAL, -1, -1, -1, -1,-1, {ACT_DIAL}}, //FIXME
302 {RSP_INIT, 0, 0,SEQ_DIAL, 601, 5, {ACT_CMD+AT_BC}},
303 {RSP_OK, 601,601, -1, 602, 5, {ACT_CMD+AT_HLC}},
304 {RSP_NULL, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
305 {RSP_OK, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
306 {RSP_OK, 603,603, -1, 604, 5, {ACT_CMD+AT_TYPE}},
307 {RSP_OK, 604,604, -1, 605, 5, {ACT_CMD+AT_MSN}},
308 {RSP_OK, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
309 {RSP_NULL, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
310 {RSP_OK, 606,606, -1, 607, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
311 {RSP_OK, 607,607, -1, 608,-1},
312 //{RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 608, 0, {ACT_ERROR}},//DELETE
313 {RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 609, 5, {ACT_CMD+AT_DIAL}},
314 {RSP_OK, 609,609, -1, 650, 0, {ACT_DIALING}},
315
316 {RSP_ZVLS, 608,608, 17, -1,-1, {ACT_DEBUG}},
317 {RSP_ZCTP, 609,609, -1, -1,-1, {ACT_DEBUG}},
318 {RSP_ZCPN, 609,609, -1, -1,-1, {ACT_DEBUG}},
319 {RSP_ERROR, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
320 {EV_TIMEOUT, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
321
322 /* dialing */
323 {RSP_ZCTP, 650,650, -1, -1,-1, {ACT_DEBUG}},
324 {RSP_ZCPN, 650,650, -1, -1,-1, {ACT_DEBUG}},
325 {RSP_ZSAU, 650,650,ZSAU_CALL_DELIVERED, -1,-1, {ACT_DEBUG}}, /* some devices don't send this */
326
327 /* connection established */
328 {RSP_ZSAU, 650,650,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
329 {RSP_ZSAU, 750,750,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
330
331 {EV_BC_OPEN, 800,800, -1, 800,-1, {ACT_NOTIFY_BC_UP}}, //FIXME new constate + timeout
332
333 /* remote hangup */
334 {RSP_ZSAU, 650,650,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT}},
335 {RSP_ZSAU, 750,750,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
336 {RSP_ZSAU, 800,800,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
337
338 /* hangup */
339 {EV_HUP, -1, -1, -1, -1,-1, {ACT_HUP}}, //FIXME
340 {RSP_INIT, -1, -1,SEQ_HUP, 401, 5, {0}, "+VLS=0\r"}, /* hang up */ //-1,-1?
341 {RSP_OK, 401,401, -1, 402, 5},
342 {RSP_ZVLS, 402,402, 0, 403, 5},
343 {RSP_ZSAU, 403,403,ZSAU_DISCONNECT_REQ, -1,-1, {ACT_DEBUG}}, /* if not remote hup */
344 //{RSP_ZSAU, 403,403,ZSAU_NULL, 401, 0, {ACT_ERROR}}, //DELETE//FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
345 {RSP_ZSAU, 403,403,ZSAU_NULL, 0, 0, {ACT_DISCONNECT}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
346 {RSP_NODEV, 401,403, -1, 0, 0, {ACT_FAKEHUP}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
347 {RSP_ERROR, 401,401, -1, 0, 0, {ACT_ABORTHUP}},
348 {EV_TIMEOUT, 401,403, -1, 0, 0, {ACT_ABORTHUP}},
349
350 {EV_BC_CLOSED, 0, 0, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME new constate + timeout
351
352 /* ring */
353 {RSP_ZBC, 700,700, -1, -1,-1, {0}},
354 {RSP_ZHLC, 700,700, -1, -1,-1, {0}},
355 {RSP_NMBR, 700,700, -1, -1,-1, {0}},
356 {RSP_ZCPN, 700,700, -1, -1,-1, {0}},
357 {RSP_ZCTP, 700,700, -1, -1,-1, {0}},
358 {EV_TIMEOUT, 700,700, -1, 720,720, {ACT_ICALL}},
359 {EV_BC_CLOSED,720,720, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}},
360
361 /*accept icall*/
362 {EV_ACCEPT, -1, -1, -1, -1,-1, {ACT_ACCEPT}}, //FIXME
363 {RSP_INIT, 720,720,SEQ_ACCEPT, 721, 5, {ACT_CMD+AT_PROTO}},
364 {RSP_OK, 721,721, -1, 722, 5, {ACT_CMD+AT_ISO}},
365 {RSP_OK, 722,722, -1, 723, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
366 {RSP_OK, 723,723, -1, 724, 5, {0}},
367 {RSP_ZVLS, 724,724, 17, 750,50, {ACT_ACCEPTED}},
368 {RSP_ERROR, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
369 {EV_TIMEOUT, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
370 {RSP_ZSAU, 700,729,ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT}},
371 {RSP_ZSAU, 700,729,ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT}},
372 {RSP_ZSAU, 700,729,ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT}},
373
374 {EV_TIMEOUT, 750,750, -1, 0, 0, {ACT_CONNTIMEOUT}},
375
376 /* B channel closed (general case) */
377 {EV_BC_CLOSED, -1, -1, -1, -1,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME
378
379 /* misc. */
380 {EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME
381
382 {RSP_ZCON, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
383 {RSP_ZCCR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
384 {RSP_ZAOC, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
385 {RSP_ZCSTR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
386
387 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
388 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
389 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
390 {RSP_LAST}
391 };
392
393
394 #if 0
395 static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME
396 {
397 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
398
399 {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
400 {RSP_LAST,0,0,0,0,0,0}
401 };
402
403 static struct reply_t tab_cid[] = /* no dle mode */ //FIXME
404 {
405 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
406
407 {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
408 {RSP_LAST,0,0,0,0,0,0}
409 };
410 #endif
411
412 static const struct resp_type_t resp_type[] =
413 {
414 /*{"", RSP_EMPTY, RT_NOTHING},*/
415 {"OK", RSP_OK, RT_NOTHING},
416 {"ERROR", RSP_ERROR, RT_NOTHING},
417 {"ZSAU", RSP_ZSAU, RT_ZSAU},
418 {"ZCAU", RSP_ZCAU, RT_ZCAU},
419 {"RING", RSP_RING, RT_RING},
420 {"ZGCI", RSP_ZGCI, RT_NUMBER},
421 {"ZVLS", RSP_ZVLS, RT_NUMBER},
422 {"ZCTP", RSP_ZCTP, RT_NUMBER},
423 {"ZDLE", RSP_ZDLE, RT_NUMBER},
424 {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
425 {"ZCCR", RSP_ZCCR, RT_NUMBER},
426 {"ZMWI", RSP_ZMWI, RT_NUMBER},
427 {"ZHLC", RSP_ZHLC, RT_STRING},
428 {"ZBC", RSP_ZBC, RT_STRING},
429 {"NMBR", RSP_NMBR, RT_STRING},
430 {"ZCPN", RSP_ZCPN, RT_STRING},
431 {"ZCON", RSP_ZCON, RT_STRING},
432 {"ZAOC", RSP_ZAOC, RT_STRING},
433 {"ZCSTR", RSP_ZCSTR, RT_STRING},
434 {"ZCFG", RSP_ZCFG, RT_HEX},
435 {"ZLOG", RSP_ZLOG, RT_NOTHING},
436 {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
437 {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
438 {NULL,0,0}
439 };
440
441 /*
442 * Get integer from char-pointer
443 */
444 static int isdn_getnum(char *p)
445 {
446 int v = -1;
447
448 gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
449
450 while (*p >= '0' && *p <= '9')
451 v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
452 if (*p)
453 v = -1; /* invalid Character */
454 return v;
455 }
456
457 /*
458 * Get integer from char-pointer
459 */
460 static int isdn_gethex(char *p)
461 {
462 int v = 0;
463 int c;
464
465 gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
466
467 if (!*p)
468 return -1;
469
470 do {
471 if (v > (INT_MAX - 15) / 16)
472 return -1;
473 c = *p;
474 if (c >= '0' && c <= '9')
475 c -= '0';
476 else if (c >= 'a' && c <= 'f')
477 c -= 'a' - 10;
478 else if (c >= 'A' && c <= 'F')
479 c -= 'A' - 10;
480 else
481 return -1;
482 v = v * 16 + c;
483 } while (*++p);
484
485 return v;
486 }
487
488 /* retrieve CID from parsed response
489 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
490 */
491 static int cid_of_response(char *s)
492 {
493 int cid;
494
495 if (s[-1] != ';')
496 return 0; /* no CID separator */
497 cid = isdn_getnum(s);
498 if (cid < 0)
499 return 0; /* CID not numeric */
500 if (cid < 1 || cid > 65535)
501 return -1; /* CID out of range */
502 return cid;
503 //FIXME is ;<digit>+ at end of non-CID response really impossible?
504 }
505
506 /* This function will be called via task queue from the callback handler.
507 * We received a modem response and have to handle it..
508 */
509 void gigaset_handle_modem_response(struct cardstate *cs)
510 {
511 unsigned char *argv[MAX_REC_PARAMS + 1];
512 int params;
513 int i, j;
514 const struct resp_type_t *rt;
515 int curarg;
516 unsigned long flags;
517 unsigned next, tail, head;
518 struct event_t *event;
519 int resp_code;
520 int param_type;
521 int abort;
522 size_t len;
523 int cid;
524 int rawstring;
525
526 len = cs->cbytes;
527 if (!len) {
528 /* ignore additional LFs/CRs (M10x config mode or cx100) */
529 gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
530 return;
531 }
532 cs->respdata[len] = 0;
533 gig_dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
534 argv[0] = cs->respdata;
535 params = 1;
536 if (cs->at_state.getstring) {
537 /* getstring only allowed without cid at the moment */
538 cs->at_state.getstring = 0;
539 rawstring = 1;
540 cid = 0;
541 } else {
542 /* parse line */
543 for (i = 0; i < len; i++)
544 switch (cs->respdata[i]) {
545 case ';':
546 case ',':
547 case '=':
548 if (params > MAX_REC_PARAMS) {
549 dev_warn(cs->dev,
550 "too many parameters in response\n");
551 /* need last parameter (might be CID) */
552 params--;
553 }
554 argv[params++] = cs->respdata + i + 1;
555 }
556
557 rawstring = 0;
558 cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
559 if (cid < 0) {
560 gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
561 NULL, 0, NULL);
562 return;
563 }
564
565 for (j = 1; j < params; ++j)
566 argv[j][-1] = 0;
567
568 gig_dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
569 if (cid) {
570 --params;
571 gig_dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
572 }
573 gig_dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
574 for (j = 1; j < params; j++)
575 gig_dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
576 }
577
578 spin_lock_irqsave(&cs->ev_lock, flags);
579 head = cs->ev_head;
580 tail = cs->ev_tail;
581
582 abort = 1;
583 curarg = 0;
584 while (curarg < params) {
585 next = (tail + 1) % MAX_EVENTS;
586 if (unlikely(next == head)) {
587 dev_err(cs->dev, "event queue full\n");
588 break;
589 }
590
591 event = cs->events + tail;
592 event->at_state = NULL;
593 event->cid = cid;
594 event->ptr = NULL;
595 event->arg = NULL;
596 tail = next;
597
598 if (rawstring) {
599 resp_code = RSP_STRING;
600 param_type = RT_STRING;
601 } else {
602 for (rt = resp_type; rt->response; ++rt)
603 if (!strcmp(argv[curarg], rt->response))
604 break;
605
606 if (!rt->response) {
607 event->type = RSP_UNKNOWN;
608 dev_warn(cs->dev,
609 "unknown modem response: %s\n",
610 argv[curarg]);
611 break;
612 }
613
614 resp_code = rt->resp_code;
615 param_type = rt->type;
616 ++curarg;
617 }
618
619 event->type = resp_code;
620
621 switch (param_type) {
622 case RT_NOTHING:
623 break;
624 case RT_RING:
625 if (!cid) {
626 dev_err(cs->dev,
627 "received RING without CID!\n");
628 event->type = RSP_INVAL;
629 abort = 1;
630 } else {
631 event->cid = 0;
632 event->parameter = cid;
633 abort = 0;
634 }
635 break;
636 case RT_ZSAU:
637 if (curarg >= params) {
638 event->parameter = ZSAU_NONE;
639 break;
640 }
641 if (!strcmp(argv[curarg], "OUTGOING_CALL_PROCEEDING"))
642 event->parameter = ZSAU_OUTGOING_CALL_PROCEEDING;
643 else if (!strcmp(argv[curarg], "CALL_DELIVERED"))
644 event->parameter = ZSAU_CALL_DELIVERED;
645 else if (!strcmp(argv[curarg], "ACTIVE"))
646 event->parameter = ZSAU_ACTIVE;
647 else if (!strcmp(argv[curarg], "DISCONNECT_IND"))
648 event->parameter = ZSAU_DISCONNECT_IND;
649 else if (!strcmp(argv[curarg], "NULL"))
650 event->parameter = ZSAU_NULL;
651 else if (!strcmp(argv[curarg], "DISCONNECT_REQ"))
652 event->parameter = ZSAU_DISCONNECT_REQ;
653 else {
654 event->parameter = ZSAU_UNKNOWN;
655 dev_warn(cs->dev,
656 "%s: unknown parameter %s after ZSAU\n",
657 __func__, argv[curarg]);
658 }
659 ++curarg;
660 break;
661 case RT_STRING:
662 if (curarg < params) {
663 event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
664 if (!event->ptr)
665 dev_err(cs->dev, "out of memory\n");
666 ++curarg;
667 }
668 #ifdef CONFIG_GIGASET_DEBUG
669 if (!event->ptr)
670 gig_dbg(DEBUG_CMD, "string==NULL");
671 else
672 gig_dbg(DEBUG_CMD, "string==%s",
673 (char *) event->ptr);
674 #endif
675 break;
676 case RT_ZCAU:
677 event->parameter = -1;
678 if (curarg + 1 < params) {
679 i = isdn_gethex(argv[curarg]);
680 j = isdn_gethex(argv[curarg + 1]);
681 if (i >= 0 && i < 256 && j >= 0 && j < 256)
682 event->parameter = (unsigned) i << 8
683 | j;
684 curarg += 2;
685 } else
686 curarg = params - 1;
687 break;
688 case RT_NUMBER:
689 case RT_HEX:
690 if (curarg < params) {
691 if (param_type == RT_HEX)
692 event->parameter =
693 isdn_gethex(argv[curarg]);
694 else
695 event->parameter =
696 isdn_getnum(argv[curarg]);
697 ++curarg;
698 } else
699 event->parameter = -1;
700 #ifdef CONFIG_GIGASET_DEBUG
701 gig_dbg(DEBUG_CMD, "parameter==%d", event->parameter);
702 #endif
703 break;
704 }
705
706 if (resp_code == RSP_ZDLE)
707 cs->dle = event->parameter;
708
709 if (abort)
710 break;
711 }
712
713 cs->ev_tail = tail;
714 spin_unlock_irqrestore(&cs->ev_lock, flags);
715
716 if (curarg != params)
717 gig_dbg(DEBUG_ANY,
718 "invalid number of processed parameters: %d/%d",
719 curarg, params);
720 }
721 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
722
723 /* disconnect
724 * process closing of connection associated with given AT state structure
725 */
726 static void disconnect(struct at_state_t **at_state_p)
727 {
728 unsigned long flags;
729 struct bc_state *bcs = (*at_state_p)->bcs;
730 struct cardstate *cs = (*at_state_p)->cs;
731
732 spin_lock_irqsave(&cs->lock, flags);
733 ++(*at_state_p)->seq_index;
734
735 /* revert to selected idle mode */
736 if (!cs->cidmode) {
737 cs->at_state.pending_commands |= PC_UMMODE;
738 cs->commands_pending = 1;
739 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
740 }
741 spin_unlock_irqrestore(&cs->lock, flags);
742
743 if (bcs) {
744 /* B channel assigned: invoke hardware specific handler */
745 cs->ops->close_bchannel(bcs);
746 } else {
747 /* no B channel assigned: just deallocate */
748 spin_lock_irqsave(&cs->lock, flags);
749 list_del(&(*at_state_p)->list);
750 kfree(*at_state_p);
751 *at_state_p = NULL;
752 spin_unlock_irqrestore(&cs->lock, flags);
753 }
754 }
755
756 /* get_free_channel
757 * get a free AT state structure: either one of those associated with the
758 * B channels of the Gigaset device, or if none of those is available,
759 * a newly allocated one with bcs=NULL
760 * The structure should be freed by calling disconnect() after use.
761 */
762 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
763 int cid)
764 /* cids: >0: siemens-cid
765 0: without cid
766 -1: no cid assigned yet
767 */
768 {
769 unsigned long flags;
770 int i;
771 struct at_state_t *ret;
772
773 for (i = 0; i < cs->channels; ++i)
774 if (gigaset_get_channel(cs->bcs + i)) {
775 ret = &cs->bcs[i].at_state;
776 ret->cid = cid;
777 return ret;
778 }
779
780 spin_lock_irqsave(&cs->lock, flags);
781 ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
782 if (ret) {
783 gigaset_at_init(ret, NULL, cs, cid);
784 list_add(&ret->list, &cs->temp_at_states);
785 }
786 spin_unlock_irqrestore(&cs->lock, flags);
787 return ret;
788 }
789
790 static void init_failed(struct cardstate *cs, int mode)
791 {
792 int i;
793 struct at_state_t *at_state;
794
795 cs->at_state.pending_commands &= ~PC_INIT;
796 cs->mode = mode;
797 cs->mstate = MS_UNINITIALIZED;
798 gigaset_free_channels(cs);
799 for (i = 0; i < cs->channels; ++i) {
800 at_state = &cs->bcs[i].at_state;
801 if (at_state->pending_commands & PC_CID) {
802 at_state->pending_commands &= ~PC_CID;
803 at_state->pending_commands |= PC_NOCID;
804 cs->commands_pending = 1;
805 }
806 }
807 }
808
809 static void schedule_init(struct cardstate *cs, int state)
810 {
811 if (cs->at_state.pending_commands & PC_INIT) {
812 gig_dbg(DEBUG_CMD, "not scheduling PC_INIT again");
813 return;
814 }
815 cs->mstate = state;
816 cs->mode = M_UNKNOWN;
817 gigaset_block_channels(cs);
818 cs->at_state.pending_commands |= PC_INIT;
819 cs->commands_pending = 1;
820 gig_dbg(DEBUG_CMD, "Scheduling PC_INIT");
821 }
822
823 /* Add "AT" to a command, add the cid, dle encode it, send the result to the
824 hardware. */
825 static void send_command(struct cardstate *cs, const char *cmd, int cid,
826 int dle, gfp_t kmallocflags)
827 {
828 size_t cmdlen, buflen;
829 char *cmdpos, *cmdbuf, *cmdtail;
830
831 cmdlen = strlen(cmd);
832 buflen = 11 + cmdlen;
833 if (unlikely(buflen <= cmdlen)) {
834 dev_err(cs->dev, "integer overflow in buflen\n");
835 return;
836 }
837
838 cmdbuf = kmalloc(buflen, kmallocflags);
839 if (unlikely(!cmdbuf)) {
840 dev_err(cs->dev, "out of memory\n");
841 return;
842 }
843
844 cmdpos = cmdbuf + 9;
845 cmdtail = cmdpos + cmdlen;
846 memcpy(cmdpos, cmd, cmdlen);
847
848 if (cid > 0 && cid <= 65535) {
849 do {
850 *--cmdpos = '0' + cid % 10;
851 cid /= 10;
852 ++cmdlen;
853 } while (cid);
854 }
855
856 cmdlen += 2;
857 *--cmdpos = 'T';
858 *--cmdpos = 'A';
859
860 if (dle) {
861 cmdlen += 4;
862 *--cmdpos = '(';
863 *--cmdpos = 0x10;
864 *cmdtail++ = 0x10;
865 *cmdtail++ = ')';
866 }
867
868 cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
869 kfree(cmdbuf);
870 }
871
872 static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
873 {
874 struct at_state_t *at_state;
875 int i;
876 unsigned long flags;
877
878 if (cid == 0)
879 return &cs->at_state;
880
881 for (i = 0; i < cs->channels; ++i)
882 if (cid == cs->bcs[i].at_state.cid)
883 return &cs->bcs[i].at_state;
884
885 spin_lock_irqsave(&cs->lock, flags);
886
887 list_for_each_entry(at_state, &cs->temp_at_states, list)
888 if (cid == at_state->cid) {
889 spin_unlock_irqrestore(&cs->lock, flags);
890 return at_state;
891 }
892
893 spin_unlock_irqrestore(&cs->lock, flags);
894
895 return NULL;
896 }
897
898 static void bchannel_down(struct bc_state *bcs)
899 {
900 if (bcs->chstate & CHS_B_UP) {
901 bcs->chstate &= ~CHS_B_UP;
902 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
903 }
904
905 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
906 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
907 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
908 }
909
910 gigaset_free_channel(bcs);
911
912 gigaset_bcs_reinit(bcs);
913 }
914
915 static void bchannel_up(struct bc_state *bcs)
916 {
917 if (!(bcs->chstate & CHS_D_UP)) {
918 dev_notice(bcs->cs->dev, "%s: D channel not up\n", __func__);
919 bcs->chstate |= CHS_D_UP;
920 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
921 }
922
923 if (bcs->chstate & CHS_B_UP) {
924 dev_notice(bcs->cs->dev, "%s: B channel already up\n",
925 __func__);
926 return;
927 }
928
929 bcs->chstate |= CHS_B_UP;
930 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
931 }
932
933 static void start_dial(struct at_state_t *at_state, void *data, unsigned seq_index)
934 {
935 struct bc_state *bcs = at_state->bcs;
936 struct cardstate *cs = at_state->cs;
937 int retval;
938 unsigned long flags;
939
940 bcs->chstate |= CHS_NOTIFY_LL;
941
942 spin_lock_irqsave(&cs->lock, flags);
943 if (at_state->seq_index != seq_index) {
944 spin_unlock_irqrestore(&cs->lock, flags);
945 goto error;
946 }
947 spin_unlock_irqrestore(&cs->lock, flags);
948
949 retval = gigaset_isdn_setup_dial(at_state, data);
950 if (retval != 0)
951 goto error;
952
953
954 at_state->pending_commands |= PC_CID;
955 gig_dbg(DEBUG_CMD, "Scheduling PC_CID");
956 cs->commands_pending = 1;
957 return;
958
959 error:
960 at_state->pending_commands |= PC_NOCID;
961 gig_dbg(DEBUG_CMD, "Scheduling PC_NOCID");
962 cs->commands_pending = 1;
963 return;
964 }
965
966 static void start_accept(struct at_state_t *at_state)
967 {
968 struct cardstate *cs = at_state->cs;
969 int retval;
970
971 retval = gigaset_isdn_setup_accept(at_state);
972
973 if (retval == 0) {
974 at_state->pending_commands |= PC_ACCEPT;
975 gig_dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
976 cs->commands_pending = 1;
977 } else {
978 /* error reset */
979 at_state->pending_commands |= PC_HUP;
980 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
981 cs->commands_pending = 1;
982 }
983 }
984
985 static void do_start(struct cardstate *cs)
986 {
987 gigaset_free_channels(cs);
988
989 if (cs->mstate != MS_LOCKED)
990 schedule_init(cs, MS_INIT);
991
992 cs->isdn_up = 1;
993 gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
994 // FIXME: not in locked mode
995 // FIXME 2: only after init sequence
996
997 cs->waiting = 0;
998 wake_up(&cs->waitqueue);
999 }
1000
1001 static void finish_shutdown(struct cardstate *cs)
1002 {
1003 if (cs->mstate != MS_LOCKED) {
1004 cs->mstate = MS_UNINITIALIZED;
1005 cs->mode = M_UNKNOWN;
1006 }
1007
1008 /* Tell the LL that the device is not available .. */
1009 if (cs->isdn_up) {
1010 cs->isdn_up = 0;
1011 gigaset_i4l_cmd(cs, ISDN_STAT_STOP);
1012 }
1013
1014 /* The rest is done by cleanup_cs () in user mode. */
1015
1016 cs->cmd_result = -ENODEV;
1017 cs->waiting = 0;
1018 wake_up(&cs->waitqueue);
1019 }
1020
1021 static void do_shutdown(struct cardstate *cs)
1022 {
1023 gigaset_block_channels(cs);
1024
1025 if (cs->mstate == MS_READY) {
1026 cs->mstate = MS_SHUTDOWN;
1027 cs->at_state.pending_commands |= PC_SHUTDOWN;
1028 cs->commands_pending = 1;
1029 gig_dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN");
1030 } else
1031 finish_shutdown(cs);
1032 }
1033
1034 static void do_stop(struct cardstate *cs)
1035 {
1036 unsigned long flags;
1037
1038 spin_lock_irqsave(&cs->lock, flags);
1039 cs->connected = 0;
1040 spin_unlock_irqrestore(&cs->lock, flags);
1041
1042 do_shutdown(cs);
1043 }
1044
1045 /* Entering cid mode or getting a cid failed:
1046 * try to initialize the device and try again.
1047 *
1048 * channel >= 0: getting cid for the channel failed
1049 * channel < 0: entering cid mode failed
1050 *
1051 * returns 0 on failure
1052 */
1053 static int reinit_and_retry(struct cardstate *cs, int channel)
1054 {
1055 int i;
1056
1057 if (--cs->retry_count <= 0)
1058 return 0;
1059
1060 for (i = 0; i < cs->channels; ++i)
1061 if (cs->bcs[i].at_state.cid > 0)
1062 return 0;
1063
1064 if (channel < 0)
1065 dev_warn(cs->dev,
1066 "Could not enter cid mode. Reinit device and try again.\n");
1067 else {
1068 dev_warn(cs->dev,
1069 "Could not get a call id. Reinit device and try again.\n");
1070 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1071 }
1072 schedule_init(cs, MS_INIT);
1073 return 1;
1074 }
1075
1076 static int at_state_invalid(struct cardstate *cs,
1077 struct at_state_t *test_ptr)
1078 {
1079 unsigned long flags;
1080 unsigned channel;
1081 struct at_state_t *at_state;
1082 int retval = 0;
1083
1084 spin_lock_irqsave(&cs->lock, flags);
1085
1086 if (test_ptr == &cs->at_state)
1087 goto exit;
1088
1089 list_for_each_entry(at_state, &cs->temp_at_states, list)
1090 if (at_state == test_ptr)
1091 goto exit;
1092
1093 for (channel = 0; channel < cs->channels; ++channel)
1094 if (&cs->bcs[channel].at_state == test_ptr)
1095 goto exit;
1096
1097 retval = 1;
1098 exit:
1099 spin_unlock_irqrestore(&cs->lock, flags);
1100 return retval;
1101 }
1102
1103 static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1104 struct at_state_t **p_at_state)
1105 {
1106 int retval;
1107 struct at_state_t *at_state = *p_at_state;
1108
1109 retval = gigaset_isdn_icall(at_state);
1110 switch (retval) {
1111 case ICALL_ACCEPT:
1112 break;
1113 default:
1114 dev_err(cs->dev, "internal error: disposition=%d\n", retval);
1115 /* --v-- fall through --v-- */
1116 case ICALL_IGNORE:
1117 case ICALL_REJECT:
1118 /* hang up actively
1119 * Device doc says that would reject the call.
1120 * In fact it doesn't.
1121 */
1122 at_state->pending_commands |= PC_HUP;
1123 cs->commands_pending = 1;
1124 break;
1125 }
1126 }
1127
1128 static int do_lock(struct cardstate *cs)
1129 {
1130 int mode;
1131 int i;
1132
1133 switch (cs->mstate) {
1134 case MS_UNINITIALIZED:
1135 case MS_READY:
1136 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1137 cs->at_state.pending_commands)
1138 return -EBUSY;
1139
1140 for (i = 0; i < cs->channels; ++i)
1141 if (cs->bcs[i].at_state.pending_commands)
1142 return -EBUSY;
1143
1144 if (!gigaset_get_channels(cs))
1145 return -EBUSY;
1146
1147 break;
1148 case MS_LOCKED:
1149 //retval = -EACCES;
1150 break;
1151 default:
1152 return -EBUSY;
1153 }
1154
1155 mode = cs->mode;
1156 cs->mstate = MS_LOCKED;
1157 cs->mode = M_UNKNOWN;
1158
1159 return mode;
1160 }
1161
1162 static int do_unlock(struct cardstate *cs)
1163 {
1164 if (cs->mstate != MS_LOCKED)
1165 return -EINVAL;
1166
1167 cs->mstate = MS_UNINITIALIZED;
1168 cs->mode = M_UNKNOWN;
1169 gigaset_free_channels(cs);
1170 if (cs->connected)
1171 schedule_init(cs, MS_INIT);
1172
1173 return 0;
1174 }
1175
1176 static void do_action(int action, struct cardstate *cs,
1177 struct bc_state *bcs,
1178 struct at_state_t **p_at_state, char **pp_command,
1179 int *p_genresp, int *p_resp_code,
1180 struct event_t *ev)
1181 {
1182 struct at_state_t *at_state = *p_at_state;
1183 struct at_state_t *at_state2;
1184 unsigned long flags;
1185
1186 int channel;
1187
1188 unsigned char *s, *e;
1189 int i;
1190 unsigned long val;
1191
1192 switch (action) {
1193 case ACT_NOTHING:
1194 break;
1195 case ACT_TIMEOUT:
1196 at_state->waiting = 1;
1197 break;
1198 case ACT_INIT:
1199 cs->at_state.pending_commands &= ~PC_INIT;
1200 cs->cur_at_seq = SEQ_NONE;
1201 cs->mode = M_UNIMODEM;
1202 spin_lock_irqsave(&cs->lock, flags);
1203 if (!cs->cidmode) {
1204 spin_unlock_irqrestore(&cs->lock, flags);
1205 gigaset_free_channels(cs);
1206 cs->mstate = MS_READY;
1207 break;
1208 }
1209 spin_unlock_irqrestore(&cs->lock, flags);
1210 cs->at_state.pending_commands |= PC_CIDMODE;
1211 cs->commands_pending = 1;
1212 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1213 break;
1214 case ACT_FAILINIT:
1215 dev_warn(cs->dev, "Could not initialize the device.\n");
1216 cs->dle = 0;
1217 init_failed(cs, M_UNKNOWN);
1218 cs->cur_at_seq = SEQ_NONE;
1219 break;
1220 case ACT_CONFIGMODE:
1221 init_failed(cs, M_CONFIG);
1222 cs->cur_at_seq = SEQ_NONE;
1223 break;
1224 case ACT_SETDLE1:
1225 cs->dle = 1;
1226 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1227 cs->inbuf[0].inputstate &=
1228 ~(INS_command | INS_DLE_command);
1229 break;
1230 case ACT_SETDLE0:
1231 cs->dle = 0;
1232 cs->inbuf[0].inputstate =
1233 (cs->inbuf[0].inputstate & ~INS_DLE_command)
1234 | INS_command;
1235 break;
1236 case ACT_CMODESET:
1237 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1238 gigaset_free_channels(cs);
1239 cs->mstate = MS_READY;
1240 }
1241 cs->mode = M_CID;
1242 cs->cur_at_seq = SEQ_NONE;
1243 break;
1244 case ACT_UMODESET:
1245 cs->mode = M_UNIMODEM;
1246 cs->cur_at_seq = SEQ_NONE;
1247 break;
1248 case ACT_FAILCMODE:
1249 cs->cur_at_seq = SEQ_NONE;
1250 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1251 init_failed(cs, M_UNKNOWN);
1252 break;
1253 }
1254 if (!reinit_and_retry(cs, -1))
1255 schedule_init(cs, MS_RECOVER);
1256 break;
1257 case ACT_FAILUMODE:
1258 cs->cur_at_seq = SEQ_NONE;
1259 schedule_init(cs, MS_RECOVER);
1260 break;
1261 case ACT_HUPMODEM:
1262 /* send "+++" (hangup in unimodem mode) */
1263 if (cs->connected)
1264 cs->ops->write_cmd(cs, "+++", 3, NULL);
1265 break;
1266 case ACT_RING:
1267 /* get fresh AT state structure for new CID */
1268 at_state2 = get_free_channel(cs, ev->parameter);
1269 if (!at_state2) {
1270 dev_warn(cs->dev,
1271 "RING ignored: could not allocate channel structure\n");
1272 break;
1273 }
1274
1275 /* initialize AT state structure
1276 * note that bcs may be NULL if no B channel is free
1277 */
1278 at_state2->ConState = 700;
1279 kfree(at_state2->str_var[STR_NMBR]);
1280 at_state2->str_var[STR_NMBR] = NULL;
1281 kfree(at_state2->str_var[STR_ZCPN]);
1282 at_state2->str_var[STR_ZCPN] = NULL;
1283 kfree(at_state2->str_var[STR_ZBC]);
1284 at_state2->str_var[STR_ZBC] = NULL;
1285 kfree(at_state2->str_var[STR_ZHLC]);
1286 at_state2->str_var[STR_ZHLC] = NULL;
1287 at_state2->int_var[VAR_ZCTP] = -1;
1288
1289 spin_lock_irqsave(&cs->lock, flags);
1290 at_state2->timer_expires = RING_TIMEOUT;
1291 at_state2->timer_active = 1;
1292 spin_unlock_irqrestore(&cs->lock, flags);
1293 break;
1294 case ACT_ICALL:
1295 handle_icall(cs, bcs, p_at_state);
1296 break;
1297 case ACT_FAILSDOWN:
1298 dev_warn(cs->dev, "Could not shut down the device.\n");
1299 /* fall through */
1300 case ACT_FAKESDOWN:
1301 case ACT_SDOWN:
1302 cs->cur_at_seq = SEQ_NONE;
1303 finish_shutdown(cs);
1304 break;
1305 case ACT_CONNECT:
1306 if (cs->onechannel) {
1307 at_state->pending_commands |= PC_DLE1;
1308 cs->commands_pending = 1;
1309 break;
1310 }
1311 bcs->chstate |= CHS_D_UP;
1312 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1313 cs->ops->init_bchannel(bcs);
1314 break;
1315 case ACT_DLE1:
1316 cs->cur_at_seq = SEQ_NONE;
1317 bcs = cs->bcs + cs->curchannel;
1318
1319 bcs->chstate |= CHS_D_UP;
1320 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1321 cs->ops->init_bchannel(bcs);
1322 break;
1323 case ACT_FAKEHUP:
1324 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1325 /* fall through */
1326 case ACT_DISCONNECT:
1327 cs->cur_at_seq = SEQ_NONE;
1328 at_state->cid = -1;
1329 if (bcs && cs->onechannel && cs->dle) {
1330 /* Check for other open channels not needed:
1331 * DLE only used for M10x with one B channel.
1332 */
1333 at_state->pending_commands |= PC_DLE0;
1334 cs->commands_pending = 1;
1335 } else
1336 disconnect(p_at_state);
1337 break;
1338 case ACT_FAKEDLE0:
1339 at_state->int_var[VAR_ZDLE] = 0;
1340 cs->dle = 0;
1341 /* fall through */
1342 case ACT_DLE0:
1343 cs->cur_at_seq = SEQ_NONE;
1344 at_state2 = &cs->bcs[cs->curchannel].at_state;
1345 disconnect(&at_state2);
1346 break;
1347 case ACT_ABORTHUP:
1348 cs->cur_at_seq = SEQ_NONE;
1349 dev_warn(cs->dev, "Could not hang up.\n");
1350 at_state->cid = -1;
1351 if (bcs && cs->onechannel)
1352 at_state->pending_commands |= PC_DLE0;
1353 else
1354 disconnect(p_at_state);
1355 schedule_init(cs, MS_RECOVER);
1356 break;
1357 case ACT_FAILDLE0:
1358 cs->cur_at_seq = SEQ_NONE;
1359 dev_warn(cs->dev, "Could not leave DLE mode.\n");
1360 at_state2 = &cs->bcs[cs->curchannel].at_state;
1361 disconnect(&at_state2);
1362 schedule_init(cs, MS_RECOVER);
1363 break;
1364 case ACT_FAILDLE1:
1365 cs->cur_at_seq = SEQ_NONE;
1366 dev_warn(cs->dev,
1367 "Could not enter DLE mode. Trying to hang up.\n");
1368 channel = cs->curchannel;
1369 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1370 cs->commands_pending = 1;
1371 break;
1372
1373 case ACT_CID: /* got cid; start dialing */
1374 cs->cur_at_seq = SEQ_NONE;
1375 channel = cs->curchannel;
1376 if (ev->parameter > 0 && ev->parameter <= 65535) {
1377 cs->bcs[channel].at_state.cid = ev->parameter;
1378 cs->bcs[channel].at_state.pending_commands |=
1379 PC_DIAL;
1380 cs->commands_pending = 1;
1381 break;
1382 }
1383 /* fall through */
1384 case ACT_FAILCID:
1385 cs->cur_at_seq = SEQ_NONE;
1386 channel = cs->curchannel;
1387 if (!reinit_and_retry(cs, channel)) {
1388 dev_warn(cs->dev,
1389 "Could not get a call ID. Cannot dial.\n");
1390 at_state2 = &cs->bcs[channel].at_state;
1391 disconnect(&at_state2);
1392 }
1393 break;
1394 case ACT_ABORTCID:
1395 cs->cur_at_seq = SEQ_NONE;
1396 at_state2 = &cs->bcs[cs->curchannel].at_state;
1397 disconnect(&at_state2);
1398 break;
1399
1400 case ACT_DIALING:
1401 case ACT_ACCEPTED:
1402 cs->cur_at_seq = SEQ_NONE;
1403 break;
1404
1405 case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL processing */
1406 disconnect(p_at_state);
1407 break;
1408
1409 case ACT_ABORTDIAL: /* error/timeout during dial preparation */
1410 cs->cur_at_seq = SEQ_NONE;
1411 at_state->pending_commands |= PC_HUP;
1412 cs->commands_pending = 1;
1413 break;
1414
1415 case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
1416 case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
1417 case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
1418 at_state->pending_commands |= PC_HUP;
1419 cs->commands_pending = 1;
1420 break;
1421 case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1422 are not handled properly anymore */
1423 at_state->getstring = 1;
1424 break;
1425 case ACT_SETVER:
1426 if (!ev->ptr) {
1427 *p_genresp = 1;
1428 *p_resp_code = RSP_ERROR;
1429 break;
1430 }
1431 s = ev->ptr;
1432
1433 if (!strcmp(s, "OK")) {
1434 *p_genresp = 1;
1435 *p_resp_code = RSP_ERROR;
1436 break;
1437 }
1438
1439 for (i = 0; i < 4; ++i) {
1440 val = simple_strtoul(s, (char **) &e, 10);
1441 if (val > INT_MAX || e == s)
1442 break;
1443 if (i == 3) {
1444 if (*e)
1445 break;
1446 } else if (*e != '.')
1447 break;
1448 else
1449 s = e + 1;
1450 cs->fwver[i] = val;
1451 }
1452 if (i != 4) {
1453 *p_genresp = 1;
1454 *p_resp_code = RSP_ERROR;
1455 break;
1456 }
1457 /*at_state->getstring = 1;*/
1458 cs->gotfwver = 0;
1459 break;
1460 case ACT_GOTVER:
1461 if (cs->gotfwver == 0) {
1462 cs->gotfwver = 1;
1463 gig_dbg(DEBUG_ANY,
1464 "firmware version %02d.%03d.%02d.%02d",
1465 cs->fwver[0], cs->fwver[1],
1466 cs->fwver[2], cs->fwver[3]);
1467 break;
1468 }
1469 /* fall through */
1470 case ACT_FAILVER:
1471 cs->gotfwver = -1;
1472 dev_err(cs->dev, "could not read firmware version.\n");
1473 break;
1474 #ifdef CONFIG_GIGASET_DEBUG
1475 case ACT_ERROR:
1476 *p_genresp = 1;
1477 *p_resp_code = RSP_ERROR;
1478 break;
1479 case ACT_TEST:
1480 {
1481 static int count = 3; //2; //1;
1482 *p_genresp = 1;
1483 *p_resp_code = count ? RSP_ERROR : RSP_OK;
1484 if (count > 0)
1485 --count;
1486 }
1487 break;
1488 #endif
1489 case ACT_DEBUG:
1490 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1491 __func__, ev->type, at_state->ConState);
1492 break;
1493 case ACT_WARN:
1494 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1495 __func__, ev->type, at_state->ConState);
1496 break;
1497 case ACT_ZCAU:
1498 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1499 ev->parameter, at_state->ConState);
1500 break;
1501
1502 /* events from the LL */
1503 case ACT_DIAL:
1504 start_dial(at_state, ev->ptr, ev->parameter);
1505 break;
1506 case ACT_ACCEPT:
1507 start_accept(at_state);
1508 break;
1509 case ACT_PROTO_L2:
1510 gig_dbg(DEBUG_CMD, "set protocol to %u",
1511 (unsigned) ev->parameter);
1512 at_state->bcs->proto2 = ev->parameter;
1513 break;
1514 case ACT_HUP:
1515 at_state->pending_commands |= PC_HUP;
1516 cs->commands_pending = 1;
1517 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
1518 break;
1519
1520 /* hotplug events */
1521 case ACT_STOP:
1522 do_stop(cs);
1523 break;
1524 case ACT_START:
1525 do_start(cs);
1526 break;
1527
1528 /* events from the interface */ // FIXME without ACT_xxxx?
1529 case ACT_IF_LOCK:
1530 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1531 cs->waiting = 0;
1532 wake_up(&cs->waitqueue);
1533 break;
1534 case ACT_IF_VER:
1535 if (ev->parameter != 0)
1536 cs->cmd_result = -EINVAL;
1537 else if (cs->gotfwver != 1) {
1538 cs->cmd_result = -ENOENT;
1539 } else {
1540 memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1541 cs->cmd_result = 0;
1542 }
1543 cs->waiting = 0;
1544 wake_up(&cs->waitqueue);
1545 break;
1546
1547 /* events from the proc file system */ // FIXME without ACT_xxxx?
1548 case ACT_PROC_CIDMODE:
1549 spin_lock_irqsave(&cs->lock, flags);
1550 if (ev->parameter != cs->cidmode) {
1551 cs->cidmode = ev->parameter;
1552 if (ev->parameter) {
1553 cs->at_state.pending_commands |= PC_CIDMODE;
1554 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1555 } else {
1556 cs->at_state.pending_commands |= PC_UMMODE;
1557 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
1558 }
1559 cs->commands_pending = 1;
1560 }
1561 spin_unlock_irqrestore(&cs->lock, flags);
1562 cs->waiting = 0;
1563 wake_up(&cs->waitqueue);
1564 break;
1565
1566 /* events from the hardware drivers */
1567 case ACT_NOTIFY_BC_DOWN:
1568 bchannel_down(bcs);
1569 break;
1570 case ACT_NOTIFY_BC_UP:
1571 bchannel_up(bcs);
1572 break;
1573 case ACT_SHUTDOWN:
1574 do_shutdown(cs);
1575 break;
1576
1577
1578 default:
1579 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1580 *pp_command = at_state->bcs->commands[action - ACT_CMD];
1581 if (!*pp_command) {
1582 *p_genresp = 1;
1583 *p_resp_code = RSP_NULL;
1584 }
1585 } else
1586 dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
1587 }
1588 }
1589
1590 /* State machine to do the calling and hangup procedure */
1591 static void process_event(struct cardstate *cs, struct event_t *ev)
1592 {
1593 struct bc_state *bcs;
1594 char *p_command = NULL;
1595 struct reply_t *rep;
1596 int rcode;
1597 int genresp = 0;
1598 int resp_code = RSP_ERROR;
1599 int sendcid;
1600 struct at_state_t *at_state;
1601 int index;
1602 int curact;
1603 unsigned long flags;
1604
1605 if (ev->cid >= 0) {
1606 at_state = at_state_from_cid(cs, ev->cid);
1607 if (!at_state) {
1608 gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1609 NULL, 0, NULL);
1610 return;
1611 }
1612 } else {
1613 at_state = ev->at_state;
1614 if (at_state_invalid(cs, at_state)) {
1615 gig_dbg(DEBUG_ANY, "event for invalid at_state %p",
1616 at_state);
1617 return;
1618 }
1619 }
1620
1621 gig_dbg(DEBUG_CMD, "connection state %d, event %d",
1622 at_state->ConState, ev->type);
1623
1624 bcs = at_state->bcs;
1625 sendcid = at_state->cid;
1626
1627 /* Setting the pointer to the dial array */
1628 rep = at_state->replystruct;
1629
1630 spin_lock_irqsave(&cs->lock, flags);
1631 if (ev->type == EV_TIMEOUT) {
1632 if (ev->parameter != at_state->timer_index
1633 || !at_state->timer_active) {
1634 ev->type = RSP_NONE; /* old timeout */
1635 gig_dbg(DEBUG_ANY, "old timeout");
1636 } else if (!at_state->waiting)
1637 gig_dbg(DEBUG_ANY, "timeout occurred");
1638 else
1639 gig_dbg(DEBUG_ANY, "stopped waiting");
1640 }
1641 spin_unlock_irqrestore(&cs->lock, flags);
1642
1643 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1644 or at_state->str_var[STR_XXXX], set it */
1645 if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1646 index = ev->type - RSP_VAR;
1647 at_state->int_var[index] = ev->parameter;
1648 } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1649 index = ev->type - RSP_STR;
1650 kfree(at_state->str_var[index]);
1651 at_state->str_var[index] = ev->ptr;
1652 ev->ptr = NULL; /* prevent process_events() from
1653 deallocating ptr */
1654 }
1655
1656 if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1657 at_state->getstring = 0;
1658
1659 /* Search row in dial array which matches modem response and current
1660 constate */
1661 for (;; rep++) {
1662 rcode = rep->resp_code;
1663 if (rcode == RSP_LAST) {
1664 /* found nothing...*/
1665 dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1666 "resp_code %d in ConState %d!\n",
1667 __func__, ev->type, at_state->ConState);
1668 return;
1669 }
1670 if ((rcode == RSP_ANY || rcode == ev->type)
1671 && ((int) at_state->ConState >= rep->min_ConState)
1672 && (rep->max_ConState < 0
1673 || (int) at_state->ConState <= rep->max_ConState)
1674 && (rep->parameter < 0 || rep->parameter == ev->parameter))
1675 break;
1676 }
1677
1678 p_command = rep->command;
1679
1680 at_state->waiting = 0;
1681 for (curact = 0; curact < MAXACT; ++curact) {
1682 /* The row tells us what we should do ..
1683 */
1684 do_action(rep->action[curact], cs, bcs, &at_state, &p_command, &genresp, &resp_code, ev);
1685 if (!at_state)
1686 break; /* may be freed after disconnect */
1687 }
1688
1689 if (at_state) {
1690 /* Jump to the next con-state regarding the array */
1691 if (rep->new_ConState >= 0)
1692 at_state->ConState = rep->new_ConState;
1693
1694 if (genresp) {
1695 spin_lock_irqsave(&cs->lock, flags);
1696 at_state->timer_expires = 0; //FIXME
1697 at_state->timer_active = 0; //FIXME
1698 spin_unlock_irqrestore(&cs->lock, flags);
1699 gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
1700 } else {
1701 /* Send command to modem if not NULL... */
1702 if (p_command/*rep->command*/) {
1703 if (cs->connected)
1704 send_command(cs, p_command,
1705 sendcid, cs->dle,
1706 GFP_ATOMIC);
1707 else
1708 gigaset_add_event(cs, at_state,
1709 RSP_NODEV,
1710 NULL, 0, NULL);
1711 }
1712
1713 spin_lock_irqsave(&cs->lock, flags);
1714 if (!rep->timeout) {
1715 at_state->timer_expires = 0;
1716 at_state->timer_active = 0;
1717 } else if (rep->timeout > 0) { /* new timeout */
1718 at_state->timer_expires = rep->timeout * 10;
1719 at_state->timer_active = 1;
1720 ++at_state->timer_index;
1721 }
1722 spin_unlock_irqrestore(&cs->lock, flags);
1723 }
1724 }
1725 }
1726
1727 static void schedule_sequence(struct cardstate *cs,
1728 struct at_state_t *at_state, int sequence)
1729 {
1730 cs->cur_at_seq = sequence;
1731 gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1732 }
1733
1734 static void process_command_flags(struct cardstate *cs)
1735 {
1736 struct at_state_t *at_state = NULL;
1737 struct bc_state *bcs;
1738 int i;
1739 int sequence;
1740 unsigned long flags;
1741
1742 cs->commands_pending = 0;
1743
1744 if (cs->cur_at_seq) {
1745 gig_dbg(DEBUG_CMD, "not searching scheduled commands: busy");
1746 return;
1747 }
1748
1749 gig_dbg(DEBUG_CMD, "searching scheduled commands");
1750
1751 sequence = SEQ_NONE;
1752
1753 /* clear pending_commands and hangup channels on shutdown */
1754 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1755 cs->at_state.pending_commands &= ~PC_CIDMODE;
1756 for (i = 0; i < cs->channels; ++i) {
1757 bcs = cs->bcs + i;
1758 at_state = &bcs->at_state;
1759 at_state->pending_commands &=
1760 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1761 if (at_state->cid > 0)
1762 at_state->pending_commands |= PC_HUP;
1763 if (at_state->pending_commands & PC_CID) {
1764 at_state->pending_commands |= PC_NOCID;
1765 at_state->pending_commands &= ~PC_CID;
1766 }
1767 }
1768 }
1769
1770 /* clear pending_commands and hangup channels on reset */
1771 if (cs->at_state.pending_commands & PC_INIT) {
1772 cs->at_state.pending_commands &= ~PC_CIDMODE;
1773 for (i = 0; i < cs->channels; ++i) {
1774 bcs = cs->bcs + i;
1775 at_state = &bcs->at_state;
1776 at_state->pending_commands &=
1777 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1778 if (at_state->cid > 0)
1779 at_state->pending_commands |= PC_HUP;
1780 if (cs->mstate == MS_RECOVER) {
1781 if (at_state->pending_commands & PC_CID) {
1782 at_state->pending_commands |= PC_NOCID;
1783 at_state->pending_commands &= ~PC_CID;
1784 }
1785 }
1786 }
1787 }
1788
1789 /* only switch back to unimodem mode, if no commands are pending and no channels are up */
1790 spin_lock_irqsave(&cs->lock, flags);
1791 if (cs->at_state.pending_commands == PC_UMMODE
1792 && !cs->cidmode
1793 && list_empty(&cs->temp_at_states)
1794 && cs->mode == M_CID) {
1795 sequence = SEQ_UMMODE;
1796 at_state = &cs->at_state;
1797 for (i = 0; i < cs->channels; ++i) {
1798 bcs = cs->bcs + i;
1799 if (bcs->at_state.pending_commands ||
1800 bcs->at_state.cid > 0) {
1801 sequence = SEQ_NONE;
1802 break;
1803 }
1804 }
1805 }
1806 spin_unlock_irqrestore(&cs->lock, flags);
1807 cs->at_state.pending_commands &= ~PC_UMMODE;
1808 if (sequence != SEQ_NONE) {
1809 schedule_sequence(cs, at_state, sequence);
1810 return;
1811 }
1812
1813 for (i = 0; i < cs->channels; ++i) {
1814 bcs = cs->bcs + i;
1815 if (bcs->at_state.pending_commands & PC_HUP) {
1816 bcs->at_state.pending_commands &= ~PC_HUP;
1817 if (bcs->at_state.pending_commands & PC_CID) {
1818 /* not yet dialing: PC_NOCID is sufficient */
1819 bcs->at_state.pending_commands |= PC_NOCID;
1820 bcs->at_state.pending_commands &= ~PC_CID;
1821 } else {
1822 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1823 return;
1824 }
1825 }
1826 if (bcs->at_state.pending_commands & PC_NOCID) {
1827 bcs->at_state.pending_commands &= ~PC_NOCID;
1828 cs->curchannel = bcs->channel;
1829 schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1830 return;
1831 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1832 bcs->at_state.pending_commands &= ~PC_DLE0;
1833 cs->curchannel = bcs->channel;
1834 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1835 return;
1836 }
1837 }
1838
1839 list_for_each_entry(at_state, &cs->temp_at_states, list)
1840 if (at_state->pending_commands & PC_HUP) {
1841 at_state->pending_commands &= ~PC_HUP;
1842 schedule_sequence(cs, at_state, SEQ_HUP);
1843 return;
1844 }
1845
1846 if (cs->at_state.pending_commands & PC_INIT) {
1847 cs->at_state.pending_commands &= ~PC_INIT;
1848 cs->dle = 0; //FIXME
1849 cs->inbuf->inputstate = INS_command;
1850 //FIXME reset card state (or -> LOCK0)?
1851 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1852 return;
1853 }
1854 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1855 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1856 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1857 return;
1858 }
1859 if (cs->at_state.pending_commands & PC_CIDMODE) {
1860 cs->at_state.pending_commands &= ~PC_CIDMODE;
1861 if (cs->mode == M_UNIMODEM) {
1862 cs->retry_count = 1;
1863 schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1864 return;
1865 }
1866 }
1867
1868 for (i = 0; i < cs->channels; ++i) {
1869 bcs = cs->bcs + i;
1870 if (bcs->at_state.pending_commands & PC_DLE1) {
1871 bcs->at_state.pending_commands &= ~PC_DLE1;
1872 cs->curchannel = bcs->channel;
1873 schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1874 return;
1875 }
1876 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1877 bcs->at_state.pending_commands &= ~PC_ACCEPT;
1878 schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1879 return;
1880 }
1881 if (bcs->at_state.pending_commands & PC_DIAL) {
1882 bcs->at_state.pending_commands &= ~PC_DIAL;
1883 schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1884 return;
1885 }
1886 if (bcs->at_state.pending_commands & PC_CID) {
1887 switch (cs->mode) {
1888 case M_UNIMODEM:
1889 cs->at_state.pending_commands |= PC_CIDMODE;
1890 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1891 cs->commands_pending = 1;
1892 return;
1893 #ifdef GIG_MAYINITONDIAL
1894 case M_UNKNOWN:
1895 schedule_init(cs, MS_INIT);
1896 return;
1897 #endif
1898 }
1899 bcs->at_state.pending_commands &= ~PC_CID;
1900 cs->curchannel = bcs->channel;
1901 #ifdef GIG_RETRYCID
1902 cs->retry_count = 2;
1903 #else
1904 cs->retry_count = 1;
1905 #endif
1906 schedule_sequence(cs, &cs->at_state, SEQ_CID);
1907 return;
1908 }
1909 }
1910 }
1911
1912 static void process_events(struct cardstate *cs)
1913 {
1914 struct event_t *ev;
1915 unsigned head, tail;
1916 int i;
1917 int check_flags = 0;
1918 int was_busy;
1919 unsigned long flags;
1920
1921 spin_lock_irqsave(&cs->ev_lock, flags);
1922 head = cs->ev_head;
1923
1924 for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1925 tail = cs->ev_tail;
1926 if (tail == head) {
1927 if (!check_flags && !cs->commands_pending)
1928 break;
1929 check_flags = 0;
1930 spin_unlock_irqrestore(&cs->ev_lock, flags);
1931 process_command_flags(cs);
1932 spin_lock_irqsave(&cs->ev_lock, flags);
1933 tail = cs->ev_tail;
1934 if (tail == head) {
1935 if (!cs->commands_pending)
1936 break;
1937 continue;
1938 }
1939 }
1940
1941 ev = cs->events + head;
1942 was_busy = cs->cur_at_seq != SEQ_NONE;
1943 spin_unlock_irqrestore(&cs->ev_lock, flags);
1944 process_event(cs, ev);
1945 spin_lock_irqsave(&cs->ev_lock, flags);
1946 kfree(ev->ptr);
1947 ev->ptr = NULL;
1948 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1949 check_flags = 1;
1950
1951 head = (head + 1) % MAX_EVENTS;
1952 cs->ev_head = head;
1953 }
1954
1955 spin_unlock_irqrestore(&cs->ev_lock, flags);
1956
1957 if (i == 2 * MAX_EVENTS) {
1958 dev_err(cs->dev,
1959 "infinite loop in process_events; aborting.\n");
1960 }
1961 }
1962
1963 /* tasklet scheduled on any event received from the Gigaset device
1964 * parameter:
1965 * data ISDN controller state structure
1966 */
1967 void gigaset_handle_event(unsigned long data)
1968 {
1969 struct cardstate *cs = (struct cardstate *) data;
1970
1971 /* handle incoming data on control/common channel */
1972 if (cs->inbuf->head != cs->inbuf->tail) {
1973 gig_dbg(DEBUG_INTR, "processing new data");
1974 cs->ops->handle_input(cs->inbuf);
1975 }
1976
1977 process_events(cs);
1978 }
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