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fdcb80bb21c7c44a05cd05c9b8827bf279bdb241
[deliverable/linux.git] / drivers / isdn / gigaset / ev-layer.c
1 /*
2 * Stuff used by all variants of the driver
3 *
4 * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>,
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 * ToDo: ...
15 * =====================================================================
16 * Version: $Id: ev-layer.c,v 1.4.2.18 2006/02/04 18:28:16 hjlipp Exp $
17 * =====================================================================
18 */
19
20 #include "gigaset.h"
21
22 /* ========================================================== */
23 /* bit masks for pending commands */
24 #define PC_INIT 0x004
25 #define PC_DLE0 0x008
26 #define PC_DLE1 0x010
27 #define PC_CID 0x080
28 #define PC_NOCID 0x100
29 #define PC_HUP 0x002
30 #define PC_DIAL 0x001
31 #define PC_ACCEPT 0x040
32 #define PC_SHUTDOWN 0x020
33 #define PC_CIDMODE 0x200
34 #define PC_UMMODE 0x400
35
36 /* types of modem responses */
37 #define RT_NOTHING 0
38 #define RT_ZSAU 1
39 #define RT_RING 2
40 #define RT_NUMBER 3
41 #define RT_STRING 4
42 #define RT_HEX 5
43 #define RT_ZCAU 6
44
45 /* Possible ASCII responses */
46 #define RSP_OK 0
47 //#define RSP_BUSY 1
48 //#define RSP_CONNECT 2
49 #define RSP_ZGCI 3
50 #define RSP_RING 4
51 #define RSP_ZAOC 5
52 #define RSP_ZCSTR 6
53 #define RSP_ZCFGT 7
54 #define RSP_ZCFG 8
55 #define RSP_ZCCR 9
56 #define RSP_EMPTY 10
57 #define RSP_ZLOG 11
58 #define RSP_ZCAU 12
59 #define RSP_ZMWI 13
60 #define RSP_ZABINFO 14
61 #define RSP_ZSMLSTCHG 15
62 #define RSP_VAR 100
63 #define RSP_ZSAU (RSP_VAR + VAR_ZSAU)
64 #define RSP_ZDLE (RSP_VAR + VAR_ZDLE)
65 #define RSP_ZVLS (RSP_VAR + VAR_ZVLS)
66 #define RSP_ZCTP (RSP_VAR + VAR_ZCTP)
67 #define RSP_STR (RSP_VAR + VAR_NUM)
68 #define RSP_NMBR (RSP_STR + STR_NMBR)
69 #define RSP_ZCPN (RSP_STR + STR_ZCPN)
70 #define RSP_ZCON (RSP_STR + STR_ZCON)
71 #define RSP_ZBC (RSP_STR + STR_ZBC)
72 #define RSP_ZHLC (RSP_STR + STR_ZHLC)
73 #define RSP_ERROR -1 /* ERROR */
74 #define RSP_WRONG_CID -2 /* unknown cid in cmd */
75 //#define RSP_EMPTY -3
76 #define RSP_UNKNOWN -4 /* unknown response */
77 #define RSP_FAIL -5 /* internal error */
78 #define RSP_INVAL -6 /* invalid response */
79
80 #define RSP_NONE -19
81 #define RSP_STRING -20
82 #define RSP_NULL -21
83 //#define RSP_RETRYFAIL -22
84 //#define RSP_RETRY -23
85 //#define RSP_SKIP -24
86 #define RSP_INIT -27
87 #define RSP_ANY -26
88 #define RSP_LAST -28
89 #define RSP_NODEV -9
90
91 /* actions for process_response */
92 #define ACT_NOTHING 0
93 #define ACT_SETDLE1 1
94 #define ACT_SETDLE0 2
95 #define ACT_FAILINIT 3
96 #define ACT_HUPMODEM 4
97 #define ACT_CONFIGMODE 5
98 #define ACT_INIT 6
99 #define ACT_DLE0 7
100 #define ACT_DLE1 8
101 #define ACT_FAILDLE0 9
102 #define ACT_FAILDLE1 10
103 #define ACT_RING 11
104 #define ACT_CID 12
105 #define ACT_FAILCID 13
106 #define ACT_SDOWN 14
107 #define ACT_FAILSDOWN 15
108 #define ACT_DEBUG 16
109 #define ACT_WARN 17
110 #define ACT_DIALING 18
111 #define ACT_ABORTDIAL 19
112 #define ACT_DISCONNECT 20
113 #define ACT_CONNECT 21
114 #define ACT_REMOTEREJECT 22
115 #define ACT_CONNTIMEOUT 23
116 #define ACT_REMOTEHUP 24
117 #define ACT_ABORTHUP 25
118 #define ACT_ICALL 26
119 #define ACT_ACCEPTED 27
120 #define ACT_ABORTACCEPT 28
121 #define ACT_TIMEOUT 29
122 #define ACT_GETSTRING 30
123 #define ACT_SETVER 31
124 #define ACT_FAILVER 32
125 #define ACT_GOTVER 33
126 #define ACT_TEST 34
127 #define ACT_ERROR 35
128 #define ACT_ABORTCID 36
129 #define ACT_ZCAU 37
130 #define ACT_NOTIFY_BC_DOWN 38
131 #define ACT_NOTIFY_BC_UP 39
132 #define ACT_DIAL 40
133 #define ACT_ACCEPT 41
134 #define ACT_PROTO_L2 42
135 #define ACT_HUP 43
136 #define ACT_IF_LOCK 44
137 #define ACT_START 45
138 #define ACT_STOP 46
139 #define ACT_FAKEDLE0 47
140 #define ACT_FAKEHUP 48
141 #define ACT_FAKESDOWN 49
142 #define ACT_SHUTDOWN 50
143 #define ACT_PROC_CIDMODE 51
144 #define ACT_UMODESET 52
145 #define ACT_FAILUMODE 53
146 #define ACT_CMODESET 54
147 #define ACT_FAILCMODE 55
148 #define ACT_IF_VER 56
149 #define ACT_CMD 100
150
151 /* at command sequences */
152 #define SEQ_NONE 0
153 #define SEQ_INIT 100
154 #define SEQ_DLE0 200
155 #define SEQ_DLE1 250
156 #define SEQ_CID 300
157 #define SEQ_NOCID 350
158 #define SEQ_HUP 400
159 #define SEQ_DIAL 600
160 #define SEQ_ACCEPT 720
161 #define SEQ_SHUTDOWN 500
162 #define SEQ_CIDMODE 10
163 #define SEQ_UMMODE 11
164
165
166 // 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid), 400: hup, 500: reset, 600: dial, 700: ring
167 struct reply_t gigaset_tab_nocid_m10x[]= /* with dle mode */
168 {
169 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
170
171 /* initialize device, set cid mode if possible */
172 //{RSP_INIT, -1, -1,100, 900, 0, {ACT_TEST}},
173 //{RSP_ERROR, 900,900, -1, 0, 0, {ACT_FAILINIT}},
174 //{RSP_OK, 900,900, -1, 100, INIT_TIMEOUT,
175 // {ACT_TIMEOUT}},
176
177 {RSP_INIT, -1, -1,SEQ_INIT, 100, INIT_TIMEOUT,
178 {ACT_TIMEOUT}}, /* wait until device is ready */
179
180 {EV_TIMEOUT, 100,100, -1, 101, 3, {0}, "Z\r"}, /* device in transparent mode? try to initialize it. */
181 {RSP_OK, 101,103, -1, 120, 5, {ACT_GETSTRING}, "+GMR\r"}, /* get version */
182
183 {EV_TIMEOUT, 101,101, -1, 102, 5, {0}, "Z\r"}, /* timeout => try once again. */
184 {RSP_ERROR, 101,101, -1, 102, 5, {0}, "Z\r"}, /* error => try once again. */
185
186 {EV_TIMEOUT, 102,102, -1, 108, 5, {ACT_SETDLE1}, "^SDLE=0\r"}, /* timeout => try again in DLE mode. */
187 {RSP_OK, 108,108, -1, 104,-1},
188 {RSP_ZDLE, 104,104, 0, 103, 5, {0}, "Z\r"},
189 {EV_TIMEOUT, 104,104, -1, 0, 0, {ACT_FAILINIT}},
190 {RSP_ERROR, 108,108, -1, 0, 0, {ACT_FAILINIT}},
191
192 {EV_TIMEOUT, 108,108, -1, 105, 2, {ACT_SETDLE0,
193 ACT_HUPMODEM,
194 ACT_TIMEOUT}}, /* still timeout => connection in unimodem mode? */
195 {EV_TIMEOUT, 105,105, -1, 103, 5, {0}, "Z\r"},
196
197 {RSP_ERROR, 102,102, -1, 107, 5, {0}, "^GETPRE\r"}, /* ERROR on ATZ => maybe in config mode? */
198 {RSP_OK, 107,107, -1, 0, 0, {ACT_CONFIGMODE}},
199 {RSP_ERROR, 107,107, -1, 0, 0, {ACT_FAILINIT}},
200 {EV_TIMEOUT, 107,107, -1, 0, 0, {ACT_FAILINIT}},
201
202 {RSP_ERROR, 103,103, -1, 0, 0, {ACT_FAILINIT}},
203 {EV_TIMEOUT, 103,103, -1, 0, 0, {ACT_FAILINIT}},
204
205 {RSP_STRING, 120,120, -1, 121,-1, {ACT_SETVER}},
206
207 {EV_TIMEOUT, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}},
208 {RSP_ERROR, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}},
209 {RSP_OK, 121,121, -1, 0, 0, {ACT_GOTVER, ACT_INIT}},
210 #if 0
211 {EV_TIMEOUT, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"},
212 {RSP_ERROR, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"},
213 {RSP_OK, 121,121, -1, 130, 5, {ACT_GOTVER}, "^SGCI=1\r"},
214
215 {RSP_OK, 130,130, -1, 0, 0, {ACT_INIT}},
216 {RSP_ERROR, 130,130, -1, 0, 0, {ACT_FAILINIT}},
217 {EV_TIMEOUT, 130,130, -1, 0, 0, {ACT_FAILINIT}},
218 #endif
219
220 /* leave dle mode */
221 {RSP_INIT, 0, 0,SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"},
222 {RSP_OK, 201,201, -1, 202,-1},
223 //{RSP_ZDLE, 202,202, 0, 202, 0, {ACT_ERROR}},//DELETE
224 {RSP_ZDLE, 202,202, 0, 0, 0, {ACT_DLE0}},
225 {RSP_NODEV, 200,249, -1, 0, 0, {ACT_FAKEDLE0}},
226 {RSP_ERROR, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
227 {EV_TIMEOUT, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
228
229 /* enter dle mode */
230 {RSP_INIT, 0, 0,SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"},
231 {RSP_OK, 251,251, -1, 252,-1},
232 {RSP_ZDLE, 252,252, 1, 0, 0, {ACT_DLE1}},
233 {RSP_ERROR, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
234 {EV_TIMEOUT, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
235
236 /* incoming call */
237 {RSP_RING, -1, -1, -1, -1,-1, {ACT_RING}},
238
239 /* get cid */
240 //{RSP_INIT, 0, 0,300, 901, 0, {ACT_TEST}},
241 //{RSP_ERROR, 901,901, -1, 0, 0, {ACT_FAILCID}},
242 //{RSP_OK, 901,901, -1, 301, 5, {0}, "^SGCI?\r"},
243
244 {RSP_INIT, 0, 0,SEQ_CID, 301, 5, {0}, "^SGCI?\r"},
245 {RSP_OK, 301,301, -1, 302,-1},
246 {RSP_ZGCI, 302,302, -1, 0, 0, {ACT_CID}},
247 {RSP_ERROR, 301,349, -1, 0, 0, {ACT_FAILCID}},
248 {EV_TIMEOUT, 301,349, -1, 0, 0, {ACT_FAILCID}},
249
250 /* enter cid mode */
251 {RSP_INIT, 0, 0,SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"},
252 {RSP_OK, 150,150, -1, 0, 0, {ACT_CMODESET}},
253 {RSP_ERROR, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
254 {EV_TIMEOUT, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
255
256 /* leave cid mode */
257 //{RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "^SGCI=0\r"},
258 {RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "Z\r"},
259 {RSP_OK, 160,160, -1, 0, 0, {ACT_UMODESET}},
260 {RSP_ERROR, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
261 {EV_TIMEOUT, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
262
263 /* abort getting cid */
264 {RSP_INIT, 0, 0,SEQ_NOCID, 0, 0, {ACT_ABORTCID}},
265
266 /* reset */
267 #if 0
268 {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 503, 5, {0}, "^SGCI=0\r"},
269 {RSP_OK, 503,503, -1, 504, 5, {0}, "Z\r"},
270 #endif
271 {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"},
272 {RSP_OK, 504,504, -1, 0, 0, {ACT_SDOWN}},
273 {RSP_ERROR, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
274 {EV_TIMEOUT, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
275 {RSP_NODEV, 501,599, -1, 0, 0, {ACT_FAKESDOWN}},
276
277 {EV_PROC_CIDMODE,-1, -1, -1, -1,-1, {ACT_PROC_CIDMODE}}, //FIXME
278 {EV_IF_LOCK, -1, -1, -1, -1,-1, {ACT_IF_LOCK}}, //FIXME
279 {EV_IF_VER, -1, -1, -1, -1,-1, {ACT_IF_VER}}, //FIXME
280 {EV_START, -1, -1, -1, -1,-1, {ACT_START}}, //FIXME
281 {EV_STOP, -1, -1, -1, -1,-1, {ACT_STOP}}, //FIXME
282 {EV_SHUTDOWN, -1, -1, -1, -1,-1, {ACT_SHUTDOWN}}, //FIXME
283
284 /* misc. */
285 {RSP_EMPTY, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
286 {RSP_ZCFGT, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
287 {RSP_ZCFG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
288 {RSP_ZLOG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
289 {RSP_ZMWI, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
290 {RSP_ZABINFO, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
291 {RSP_ZSMLSTCHG,-1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
292
293 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
294 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
295 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
296 {RSP_LAST}
297 };
298
299 // 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring, 400: hup, 750: accepted icall
300 struct reply_t gigaset_tab_cid_m10x[] = /* for M10x */
301 {
302 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
303
304 /* dial */
305 {EV_DIAL, -1, -1, -1, -1,-1, {ACT_DIAL}}, //FIXME
306 {RSP_INIT, 0, 0,SEQ_DIAL, 601, 5, {ACT_CMD+AT_BC}},
307 {RSP_OK, 601,601, -1, 602, 5, {ACT_CMD+AT_HLC}},
308 {RSP_NULL, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
309 {RSP_OK, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
310 {RSP_OK, 603,603, -1, 604, 5, {ACT_CMD+AT_TYPE}},
311 {RSP_OK, 604,604, -1, 605, 5, {ACT_CMD+AT_MSN}},
312 {RSP_OK, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
313 {RSP_NULL, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
314 {RSP_OK, 606,606, -1, 607, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
315 {RSP_OK, 607,607, -1, 608,-1},
316 //{RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 608, 0, {ACT_ERROR}},//DELETE
317 {RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 609, 5, {ACT_CMD+AT_DIAL}},
318 {RSP_OK, 609,609, -1, 650, 0, {ACT_DIALING}},
319
320 {RSP_ZVLS, 608,608, 17, -1,-1, {ACT_DEBUG}},
321 {RSP_ZCTP, 609,609, -1, -1,-1, {ACT_DEBUG}},
322 {RSP_ZCPN, 609,609, -1, -1,-1, {ACT_DEBUG}},
323 {RSP_ERROR, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
324 {EV_TIMEOUT, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
325
326 /* dialing */
327 {RSP_ZCTP, 650,650, -1, -1,-1, {ACT_DEBUG}},
328 {RSP_ZCPN, 650,650, -1, -1,-1, {ACT_DEBUG}},
329 {RSP_ZSAU, 650,650,ZSAU_CALL_DELIVERED, -1,-1, {ACT_DEBUG}}, /* some devices don't send this */
330
331 /* connection established */
332 {RSP_ZSAU, 650,650,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
333 {RSP_ZSAU, 750,750,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
334
335 {EV_BC_OPEN, 800,800, -1, 800,-1, {ACT_NOTIFY_BC_UP}}, //FIXME new constate + timeout
336
337 /* remote hangup */
338 {RSP_ZSAU, 650,650,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT}},
339 {RSP_ZSAU, 750,750,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
340 {RSP_ZSAU, 800,800,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
341
342 /* hangup */
343 {EV_HUP, -1, -1, -1, -1,-1, {ACT_HUP}}, //FIXME
344 {RSP_INIT, -1, -1,SEQ_HUP, 401, 5, {0}, "+VLS=0\r"}, /* hang up */ //-1,-1?
345 {RSP_OK, 401,401, -1, 402, 5},
346 {RSP_ZVLS, 402,402, 0, 403, 5},
347 {RSP_ZSAU, 403,403,ZSAU_DISCONNECT_REQ, -1,-1, {ACT_DEBUG}}, /* if not remote hup */
348 //{RSP_ZSAU, 403,403,ZSAU_NULL, 401, 0, {ACT_ERROR}}, //DELETE//FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
349 {RSP_ZSAU, 403,403,ZSAU_NULL, 0, 0, {ACT_DISCONNECT}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
350 {RSP_NODEV, 401,403, -1, 0, 0, {ACT_FAKEHUP}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
351 {RSP_ERROR, 401,401, -1, 0, 0, {ACT_ABORTHUP}},
352 {EV_TIMEOUT, 401,403, -1, 0, 0, {ACT_ABORTHUP}},
353
354 {EV_BC_CLOSED, 0, 0, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME new constate + timeout
355
356 /* ring */
357 {RSP_ZBC, 700,700, -1, -1,-1, {0}},
358 {RSP_ZHLC, 700,700, -1, -1,-1, {0}},
359 {RSP_NMBR, 700,700, -1, -1,-1, {0}},
360 {RSP_ZCPN, 700,700, -1, -1,-1, {0}},
361 {RSP_ZCTP, 700,700, -1, -1,-1, {0}},
362 {EV_TIMEOUT, 700,700, -1, 720,720, {ACT_ICALL}},
363 {EV_BC_CLOSED,720,720, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}},
364
365 /*accept icall*/
366 {EV_ACCEPT, -1, -1, -1, -1,-1, {ACT_ACCEPT}}, //FIXME
367 {RSP_INIT, 720,720,SEQ_ACCEPT, 721, 5, {ACT_CMD+AT_PROTO}},
368 {RSP_OK, 721,721, -1, 722, 5, {ACT_CMD+AT_ISO}},
369 {RSP_OK, 722,722, -1, 723, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
370 {RSP_OK, 723,723, -1, 724, 5, {0}},
371 {RSP_ZVLS, 724,724, 17, 750,50, {ACT_ACCEPTED}},
372 {RSP_ERROR, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
373 {EV_TIMEOUT, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
374 {RSP_ZSAU, 700,729,ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT}},
375 {RSP_ZSAU, 700,729,ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT}},
376 {RSP_ZSAU, 700,729,ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT}},
377
378 {EV_TIMEOUT, 750,750, -1, 0, 0, {ACT_CONNTIMEOUT}},
379
380 /* misc. */
381 {EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME
382
383 {RSP_ZCON, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
384 {RSP_ZCCR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
385 {RSP_ZAOC, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
386 {RSP_ZCSTR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
387
388 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
389 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
390 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
391 {RSP_LAST}
392 };
393
394
395 #if 0
396 static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME aenderungen uebernehmen
397 {
398 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
399
400 {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
401 {RSP_LAST,0,0,0,0,0,0}
402 };
403
404 static struct reply_t tab_cid[] = /* no dle mode */ //FIXME aenderungen uebernehmen
405 {
406 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
407
408 {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
409 {RSP_LAST,0,0,0,0,0,0}
410 };
411 #endif
412
413 static struct resp_type_t resp_type[]=
414 {
415 /*{"", RSP_EMPTY, RT_NOTHING},*/
416 {"OK", RSP_OK, RT_NOTHING},
417 {"ERROR", RSP_ERROR, RT_NOTHING},
418 {"ZSAU", RSP_ZSAU, RT_ZSAU},
419 {"ZCAU", RSP_ZCAU, RT_ZCAU},
420 {"RING", RSP_RING, RT_RING},
421 {"ZGCI", RSP_ZGCI, RT_NUMBER},
422 {"ZVLS", RSP_ZVLS, RT_NUMBER},
423 {"ZCTP", RSP_ZCTP, RT_NUMBER},
424 {"ZDLE", RSP_ZDLE, RT_NUMBER},
425 {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
426 {"ZCCR", RSP_ZCCR, RT_NUMBER},
427 {"ZMWI", RSP_ZMWI, RT_NUMBER},
428 {"ZHLC", RSP_ZHLC, RT_STRING},
429 {"ZBC", RSP_ZBC, RT_STRING},
430 {"NMBR", RSP_NMBR, RT_STRING},
431 {"ZCPN", RSP_ZCPN, RT_STRING},
432 {"ZCON", RSP_ZCON, RT_STRING},
433 {"ZAOC", RSP_ZAOC, RT_STRING},
434 {"ZCSTR", RSP_ZCSTR, RT_STRING},
435 {"ZCFG", RSP_ZCFG, RT_HEX},
436 {"ZLOG", RSP_ZLOG, RT_NOTHING},
437 {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
438 {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
439 {NULL,0,0}
440 };
441
442 /*
443 * Get integer from char-pointer
444 */
445 static int isdn_getnum(char *p)
446 {
447 int v = -1;
448
449 IFNULLRETVAL(p, -1);
450
451 dbg(DEBUG_TRANSCMD, "string: %s", p);
452
453 while (*p >= '0' && *p <= '9')
454 v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
455 if (*p)
456 v = -1; /* invalid Character */
457 return v;
458 }
459
460 /*
461 * Get integer from char-pointer
462 */
463 static int isdn_gethex(char *p)
464 {
465 int v = 0;
466 int c;
467
468 IFNULLRETVAL(p, -1);
469
470 dbg(DEBUG_TRANSCMD, "string: %s", p);
471
472 if (!*p)
473 return -1;
474
475 do {
476 if (v > (INT_MAX - 15) / 16)
477 return -1;
478 c = *p;
479 if (c >= '0' && c <= '9')
480 c -= '0';
481 else if (c >= 'a' && c <= 'f')
482 c -= 'a' - 10;
483 else if (c >= 'A' && c <= 'F')
484 c -= 'A' - 10;
485 else
486 return -1;
487 v = v * 16 + c;
488 } while (*++p);
489
490 return v;
491 }
492
493 static inline void new_index(atomic_t *index, int max)
494 {
495 if (atomic_read(index) == max) //FIXME race?
496 atomic_set(index, 0);
497 else
498 atomic_inc(index);
499 }
500
501 /* retrieve CID from parsed response
502 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
503 */
504 static int cid_of_response(char *s)
505 {
506 int cid;
507
508 if (s[-1] != ';')
509 return 0; /* no CID separator */
510 cid = isdn_getnum(s);
511 if (cid < 0)
512 return 0; /* CID not numeric */
513 if (cid < 1 || cid > 65535)
514 return -1; /* CID out of range */
515 return cid;
516 //FIXME is ;<digit>+ at end of non-CID response really impossible?
517 }
518
519 /* This function will be called via task queue from the callback handler.
520 * We received a modem response and have to handle it..
521 */
522 void gigaset_handle_modem_response(struct cardstate *cs)
523 {
524 unsigned char *argv[MAX_REC_PARAMS + 1];
525 int params;
526 int i, j;
527 struct resp_type_t *rt;
528 int curarg;
529 unsigned long flags;
530 unsigned next, tail, head;
531 struct event_t *event;
532 int resp_code;
533 int param_type;
534 int abort;
535 size_t len;
536 int cid;
537 int rawstring;
538
539 IFNULLRET(cs);
540
541 len = cs->cbytes;
542 if (!len) {
543 /* ignore additional LFs/CRs (M10x config mode or cx100) */
544 dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
545 return;
546 }
547 cs->respdata[len] = 0;
548 dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
549 argv[0] = cs->respdata;
550 params = 1;
551 if (cs->at_state.getstring) {
552 /* getstring only allowed without cid at the moment */
553 cs->at_state.getstring = 0;
554 rawstring = 1;
555 cid = 0;
556 } else {
557 /* parse line */
558 for (i = 0; i < len; i++)
559 switch (cs->respdata[i]) {
560 case ';':
561 case ',':
562 case '=':
563 if (params > MAX_REC_PARAMS) {
564 warn("too many parameters in response");
565 /* need last parameter (might be CID) */
566 params--;
567 }
568 argv[params++] = cs->respdata + i + 1;
569 }
570
571 rawstring = 0;
572 cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
573 if (cid < 0) {
574 gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
575 NULL, 0, NULL);
576 return;
577 }
578
579 for (j = 1; j < params; ++j)
580 argv[j][-1] = 0;
581
582 dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
583 if (cid) {
584 --params;
585 dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
586 }
587 dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
588 for (j = 1; j < params; j++)
589 dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
590 }
591
592 spin_lock_irqsave(&cs->ev_lock, flags);
593 head = atomic_read(&cs->ev_head);
594 tail = atomic_read(&cs->ev_tail);
595
596 abort = 1;
597 curarg = 0;
598 while (curarg < params) {
599 next = (tail + 1) % MAX_EVENTS;
600 if (unlikely(next == head)) {
601 err("event queue full");
602 break;
603 }
604
605 event = cs->events + tail;
606 event->at_state = NULL;
607 event->cid = cid;
608 event->ptr = NULL;
609 event->arg = NULL;
610 tail = next;
611
612 if (rawstring) {
613 resp_code = RSP_STRING;
614 param_type = RT_STRING;
615 } else {
616 for (rt = resp_type; rt->response; ++rt)
617 if (!strcmp(argv[curarg], rt->response))
618 break;
619
620 if (!rt->response) {
621 event->type = RSP_UNKNOWN;
622 warn("unknown modem response: %s",
623 argv[curarg]);
624 break;
625 }
626
627 resp_code = rt->resp_code;
628 param_type = rt->type;
629 ++curarg;
630 }
631
632 event->type = resp_code;
633
634 switch (param_type) {
635 case RT_NOTHING:
636 break;
637 case RT_RING:
638 if (!cid) {
639 err("received RING without CID!");
640 event->type = RSP_INVAL;
641 abort = 1;
642 } else {
643 event->cid = 0;
644 event->parameter = cid;
645 abort = 0;
646 }
647 break;
648 case RT_ZSAU:
649 if (curarg >= params) {
650 event->parameter = ZSAU_NONE;
651 break;
652 }
653 if (!strcmp(argv[curarg], "OUTGOING_CALL_PROCEEDING"))
654 event->parameter = ZSAU_OUTGOING_CALL_PROCEEDING;
655 else if (!strcmp(argv[curarg], "CALL_DELIVERED"))
656 event->parameter = ZSAU_CALL_DELIVERED;
657 else if (!strcmp(argv[curarg], "ACTIVE"))
658 event->parameter = ZSAU_ACTIVE;
659 else if (!strcmp(argv[curarg], "DISCONNECT_IND"))
660 event->parameter = ZSAU_DISCONNECT_IND;
661 else if (!strcmp(argv[curarg], "NULL"))
662 event->parameter = ZSAU_NULL;
663 else if (!strcmp(argv[curarg], "DISCONNECT_REQ"))
664 event->parameter = ZSAU_DISCONNECT_REQ;
665 else {
666 event->parameter = ZSAU_UNKNOWN;
667 warn("%s: unknown parameter %s after ZSAU",
668 __func__, argv[curarg]);
669 }
670 ++curarg;
671 break;
672 case RT_STRING:
673 if (curarg < params) {
674 len = strlen(argv[curarg]) + 1;
675 event->ptr = kmalloc(len, GFP_ATOMIC);
676 if (event->ptr)
677 memcpy(event->ptr, argv[curarg], len);
678 else
679 err("no memory for string!");
680 ++curarg;
681 }
682 #ifdef CONFIG_GIGASET_DEBUG
683 if (!event->ptr)
684 dbg(DEBUG_CMD, "string==NULL");
685 else
686 dbg(DEBUG_CMD,
687 "string==%s", (char *) event->ptr);
688 #endif
689 break;
690 case RT_ZCAU:
691 event->parameter = -1;
692 if (curarg + 1 < params) {
693 i = isdn_gethex(argv[curarg]);
694 j = isdn_gethex(argv[curarg + 1]);
695 if (i >= 0 && i < 256 && j >= 0 && j < 256)
696 event->parameter = (unsigned) i << 8
697 | j;
698 curarg += 2;
699 } else
700 curarg = params - 1;
701 break;
702 case RT_NUMBER:
703 case RT_HEX:
704 if (curarg < params) {
705 if (param_type == RT_HEX)
706 event->parameter =
707 isdn_gethex(argv[curarg]);
708 else
709 event->parameter =
710 isdn_getnum(argv[curarg]);
711 ++curarg;
712 } else
713 event->parameter = -1;
714 #ifdef CONFIG_GIGASET_DEBUG
715 dbg(DEBUG_CMD, "parameter==%d", event->parameter);
716 #endif
717 break;
718 }
719
720 if (resp_code == RSP_ZDLE)
721 cs->dle = event->parameter;
722
723 if (abort)
724 break;
725 }
726
727 atomic_set(&cs->ev_tail, tail);
728 spin_unlock_irqrestore(&cs->ev_lock, flags);
729
730 if (curarg != params)
731 dbg(DEBUG_ANY, "invalid number of processed parameters: %d/%d",
732 curarg, params);
733 }
734 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
735
736 /* disconnect
737 * process closing of connection associated with given AT state structure
738 */
739 static void disconnect(struct at_state_t **at_state_p)
740 {
741 unsigned long flags;
742 struct bc_state *bcs;
743 struct cardstate *cs;
744
745 IFNULLRET(at_state_p);
746 IFNULLRET(*at_state_p);
747 bcs = (*at_state_p)->bcs;
748 cs = (*at_state_p)->cs;
749 IFNULLRET(cs);
750
751 new_index(&(*at_state_p)->seq_index, MAX_SEQ_INDEX);
752
753 /* revert to selected idle mode */
754 if (!atomic_read(&cs->cidmode)) {
755 cs->at_state.pending_commands |= PC_UMMODE;
756 atomic_set(&cs->commands_pending, 1); //FIXME
757 dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
758 }
759
760 if (bcs) {
761 /* B channel assigned: invoke hardware specific handler */
762 cs->ops->close_bchannel(bcs);
763 } else {
764 /* no B channel assigned: just deallocate */
765 spin_lock_irqsave(&cs->lock, flags);
766 list_del(&(*at_state_p)->list);
767 kfree(*at_state_p);
768 *at_state_p = NULL;
769 spin_unlock_irqrestore(&cs->lock, flags);
770 }
771 }
772
773 /* get_free_channel
774 * get a free AT state structure: either one of those associated with the
775 * B channels of the Gigaset device, or if none of those is available,
776 * a newly allocated one with bcs=NULL
777 * The structure should be freed by calling disconnect() after use.
778 */
779 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
780 int cid)
781 /* cids: >0: siemens-cid
782 0: without cid
783 -1: no cid assigned yet
784 */
785 {
786 unsigned long flags;
787 int i;
788 struct at_state_t *ret;
789
790 for (i = 0; i < cs->channels; ++i)
791 if (gigaset_get_channel(cs->bcs + i)) {
792 ret = &cs->bcs[i].at_state;
793 ret->cid = cid;
794 return ret;
795 }
796
797 spin_lock_irqsave(&cs->lock, flags);
798 ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
799 if (ret) {
800 gigaset_at_init(ret, NULL, cs, cid);
801 list_add(&ret->list, &cs->temp_at_states);
802 }
803 spin_unlock_irqrestore(&cs->lock, flags);
804 return ret;
805 }
806
807 static void init_failed(struct cardstate *cs, int mode)
808 {
809 int i;
810 struct at_state_t *at_state;
811
812 cs->at_state.pending_commands &= ~PC_INIT;
813 atomic_set(&cs->mode, mode);
814 atomic_set(&cs->mstate, MS_UNINITIALIZED);
815 gigaset_free_channels(cs);
816 for (i = 0; i < cs->channels; ++i) {
817 at_state = &cs->bcs[i].at_state;
818 if (at_state->pending_commands & PC_CID) {
819 at_state->pending_commands &= ~PC_CID;
820 at_state->pending_commands |= PC_NOCID;
821 atomic_set(&cs->commands_pending, 1);
822 }
823 }
824 }
825
826 static void schedule_init(struct cardstate *cs, int state)
827 {
828 if (cs->at_state.pending_commands & PC_INIT) {
829 dbg(DEBUG_CMD, "not scheduling PC_INIT again");
830 return;
831 }
832 atomic_set(&cs->mstate, state);
833 atomic_set(&cs->mode, M_UNKNOWN);
834 gigaset_block_channels(cs);
835 cs->at_state.pending_commands |= PC_INIT;
836 atomic_set(&cs->commands_pending, 1);
837 dbg(DEBUG_CMD, "Scheduling PC_INIT");
838 }
839
840 /* Add "AT" to a command, add the cid, dle encode it, send the result to the hardware. */
841 static void send_command(struct cardstate *cs, const char *cmd, int cid,
842 int dle, gfp_t kmallocflags)
843 {
844 size_t cmdlen, buflen;
845 char *cmdpos, *cmdbuf, *cmdtail;
846
847 cmdlen = strlen(cmd);
848 buflen = 11 + cmdlen;
849
850 if (likely(buflen > cmdlen)) {
851 cmdbuf = kmalloc(buflen, kmallocflags);
852 if (likely(cmdbuf != NULL)) {
853 cmdpos = cmdbuf + 9;
854 cmdtail = cmdpos + cmdlen;
855 memcpy(cmdpos, cmd, cmdlen);
856
857 if (cid > 0 && cid <= 65535) {
858 do {
859 *--cmdpos = '0' + cid % 10;
860 cid /= 10;
861 ++cmdlen;
862 } while (cid);
863 }
864
865 cmdlen += 2;
866 *--cmdpos = 'T';
867 *--cmdpos = 'A';
868
869 if (dle) {
870 cmdlen += 4;
871 *--cmdpos = '(';
872 *--cmdpos = 0x10;
873 *cmdtail++ = 0x10;
874 *cmdtail++ = ')';
875 }
876
877 cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
878 kfree(cmdbuf);
879 } else
880 err("no memory for command buffer");
881 } else
882 err("overflow in buflen");
883 }
884
885 static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
886 {
887 struct at_state_t *at_state;
888 int i;
889 unsigned long flags;
890
891 if (cid == 0)
892 return &cs->at_state;
893
894 for (i = 0; i < cs->channels; ++i)
895 if (cid == cs->bcs[i].at_state.cid)
896 return &cs->bcs[i].at_state;
897
898 spin_lock_irqsave(&cs->lock, flags);
899
900 list_for_each_entry(at_state, &cs->temp_at_states, list)
901 if (cid == at_state->cid) {
902 spin_unlock_irqrestore(&cs->lock, flags);
903 return at_state;
904 }
905
906 spin_unlock_irqrestore(&cs->lock, flags);
907
908 return NULL;
909 }
910
911 static void bchannel_down(struct bc_state *bcs)
912 {
913 IFNULLRET(bcs);
914 IFNULLRET(bcs->cs);
915
916 if (bcs->chstate & CHS_B_UP) {
917 bcs->chstate &= ~CHS_B_UP;
918 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
919 }
920
921 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
922 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
923 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
924 }
925
926 gigaset_free_channel(bcs);
927
928 gigaset_bcs_reinit(bcs);
929 }
930
931 static void bchannel_up(struct bc_state *bcs)
932 {
933 IFNULLRET(bcs);
934
935 if (!(bcs->chstate & CHS_D_UP)) {
936 notice("%s: D channel not up", __func__);
937 bcs->chstate |= CHS_D_UP;
938 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
939 }
940
941 if (bcs->chstate & CHS_B_UP) {
942 notice("%s: B channel already up", __func__);
943 return;
944 }
945
946 bcs->chstate |= CHS_B_UP;
947 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
948 }
949
950 static void start_dial(struct at_state_t *at_state, void *data, int seq_index)
951 {
952 struct bc_state *bcs = at_state->bcs;
953 struct cardstate *cs = at_state->cs;
954 int retval;
955
956 bcs->chstate |= CHS_NOTIFY_LL;
957 //atomic_set(&bcs->status, BCS_INIT);
958
959 if (atomic_read(&at_state->seq_index) != seq_index)
960 goto error;
961
962 retval = gigaset_isdn_setup_dial(at_state, data);
963 if (retval != 0)
964 goto error;
965
966
967 at_state->pending_commands |= PC_CID;
968 dbg(DEBUG_CMD, "Scheduling PC_CID");
969 //#ifdef GIG_MAYINITONDIAL
970 // if (atomic_read(&cs->MState) == MS_UNKNOWN) {
971 // cs->at_state.pending_commands |= PC_INIT;
972 // dbg(DEBUG_CMD, "Scheduling PC_INIT");
973 // }
974 //#endif
975 atomic_set(&cs->commands_pending, 1); //FIXME
976 return;
977
978 error:
979 at_state->pending_commands |= PC_NOCID;
980 dbg(DEBUG_CMD, "Scheduling PC_NOCID");
981 atomic_set(&cs->commands_pending, 1); //FIXME
982 return;
983 }
984
985 static void start_accept(struct at_state_t *at_state)
986 {
987 struct cardstate *cs = at_state->cs;
988 int retval;
989
990 retval = gigaset_isdn_setup_accept(at_state);
991
992 if (retval == 0) {
993 at_state->pending_commands |= PC_ACCEPT;
994 dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
995 atomic_set(&cs->commands_pending, 1); //FIXME
996 } else {
997 //FIXME
998 at_state->pending_commands |= PC_HUP;
999 dbg(DEBUG_CMD, "Scheduling PC_HUP");
1000 atomic_set(&cs->commands_pending, 1); //FIXME
1001 }
1002 }
1003
1004 static void do_start(struct cardstate *cs)
1005 {
1006 gigaset_free_channels(cs);
1007
1008 if (atomic_read(&cs->mstate) != MS_LOCKED)
1009 schedule_init(cs, MS_INIT);
1010
1011 gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
1012 // FIXME: not in locked mode
1013 // FIXME 2: only after init sequence
1014
1015 cs->waiting = 0;
1016 wake_up(&cs->waitqueue);
1017 }
1018
1019 static void finish_shutdown(struct cardstate *cs)
1020 {
1021 if (atomic_read(&cs->mstate) != MS_LOCKED) {
1022 atomic_set(&cs->mstate, MS_UNINITIALIZED);
1023 atomic_set(&cs->mode, M_UNKNOWN);
1024 }
1025
1026 /* The rest is done by cleanup_cs () in user mode. */
1027
1028 cs->cmd_result = -ENODEV;
1029 cs->waiting = 0;
1030 wake_up_interruptible(&cs->waitqueue);
1031 }
1032
1033 static void do_shutdown(struct cardstate *cs)
1034 {
1035 gigaset_block_channels(cs);
1036
1037 if (atomic_read(&cs->mstate) == MS_READY) {
1038 atomic_set(&cs->mstate, MS_SHUTDOWN);
1039 cs->at_state.pending_commands |= PC_SHUTDOWN;
1040 atomic_set(&cs->commands_pending, 1); //FIXME
1041 dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN"); //FIXME
1042 //gigaset_schedule_event(cs); //FIXME
1043 } else
1044 finish_shutdown(cs);
1045 }
1046
1047 static void do_stop(struct cardstate *cs)
1048 {
1049 do_shutdown(cs);
1050 }
1051
1052 /* Entering cid mode or getting a cid failed:
1053 * try to initialize the device and try again.
1054 *
1055 * channel >= 0: getting cid for the channel failed
1056 * channel < 0: entering cid mode failed
1057 *
1058 * returns 0 on failure
1059 */
1060 static int reinit_and_retry(struct cardstate *cs, int channel)
1061 {
1062 int i;
1063
1064 if (--cs->retry_count <= 0)
1065 return 0;
1066
1067 for (i = 0; i < cs->channels; ++i)
1068 if (cs->bcs[i].at_state.cid > 0)
1069 return 0;
1070
1071 if (channel < 0)
1072 warn("Could not enter cid mode. Reinit device and try again.");
1073 else {
1074 warn("Could not get a call id. Reinit device and try again.");
1075 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1076 }
1077 schedule_init(cs, MS_INIT);
1078 return 1;
1079 }
1080
1081 static int at_state_invalid(struct cardstate *cs,
1082 struct at_state_t *test_ptr)
1083 {
1084 unsigned long flags;
1085 unsigned channel;
1086 struct at_state_t *at_state;
1087 int retval = 0;
1088
1089 spin_lock_irqsave(&cs->lock, flags);
1090
1091 if (test_ptr == &cs->at_state)
1092 goto exit;
1093
1094 list_for_each_entry(at_state, &cs->temp_at_states, list)
1095 if (at_state == test_ptr)
1096 goto exit;
1097
1098 for (channel = 0; channel < cs->channels; ++channel)
1099 if (&cs->bcs[channel].at_state == test_ptr)
1100 goto exit;
1101
1102 retval = 1;
1103 exit:
1104 spin_unlock_irqrestore(&cs->lock, flags);
1105 return retval;
1106 }
1107
1108 static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1109 struct at_state_t **p_at_state)
1110 {
1111 int retval;
1112 struct at_state_t *at_state = *p_at_state;
1113
1114 retval = gigaset_isdn_icall(at_state);
1115 switch (retval) {
1116 case ICALL_ACCEPT:
1117 break;
1118 default:
1119 err("internal error: disposition=%d", retval);
1120 /* --v-- fall through --v-- */
1121 case ICALL_IGNORE:
1122 case ICALL_REJECT:
1123 /* hang up actively
1124 * Device doc says that would reject the call.
1125 * In fact it doesn't.
1126 */
1127 at_state->pending_commands |= PC_HUP;
1128 atomic_set(&cs->commands_pending, 1);
1129 break;
1130 }
1131 }
1132
1133 static int do_lock(struct cardstate *cs)
1134 {
1135 int mode;
1136 int i;
1137
1138 switch (atomic_read(&cs->mstate)) {
1139 case MS_UNINITIALIZED:
1140 case MS_READY:
1141 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1142 cs->at_state.pending_commands)
1143 return -EBUSY;
1144
1145 for (i = 0; i < cs->channels; ++i)
1146 if (cs->bcs[i].at_state.pending_commands)
1147 return -EBUSY;
1148
1149 if (!gigaset_get_channels(cs))
1150 return -EBUSY;
1151
1152 break;
1153 case MS_LOCKED:
1154 //retval = -EACCES;
1155 break;
1156 default:
1157 return -EBUSY;
1158 }
1159
1160 mode = atomic_read(&cs->mode);
1161 atomic_set(&cs->mstate, MS_LOCKED);
1162 atomic_set(&cs->mode, M_UNKNOWN);
1163 //FIXME reset card state / at states / bcs states
1164
1165 return mode;
1166 }
1167
1168 static int do_unlock(struct cardstate *cs)
1169 {
1170 if (atomic_read(&cs->mstate) != MS_LOCKED)
1171 return -EINVAL;
1172
1173 atomic_set(&cs->mstate, MS_UNINITIALIZED);
1174 atomic_set(&cs->mode, M_UNKNOWN);
1175 gigaset_free_channels(cs);
1176 //FIXME reset card state / at states / bcs states
1177 if (atomic_read(&cs->connected))
1178 schedule_init(cs, MS_INIT);
1179
1180 return 0;
1181 }
1182
1183 static void do_action(int action, struct cardstate *cs,
1184 struct bc_state *bcs,
1185 struct at_state_t **p_at_state, char **pp_command,
1186 int *p_genresp, int *p_resp_code,
1187 struct event_t *ev)
1188 {
1189 struct at_state_t *at_state = *p_at_state;
1190 struct at_state_t *at_state2;
1191 unsigned long flags;
1192
1193 int channel;
1194
1195 unsigned char *s, *e;
1196 int i;
1197 unsigned long val;
1198
1199 switch (action) {
1200 case ACT_NOTHING:
1201 break;
1202 case ACT_TIMEOUT:
1203 at_state->waiting = 1;
1204 break;
1205 case ACT_INIT:
1206 //FIXME setup everything
1207 cs->at_state.pending_commands &= ~PC_INIT;
1208 cs->cur_at_seq = SEQ_NONE;
1209 atomic_set(&cs->mode, M_UNIMODEM);
1210 if (!atomic_read(&cs->cidmode)) {
1211 gigaset_free_channels(cs);
1212 atomic_set(&cs->mstate, MS_READY);
1213 break;
1214 }
1215 cs->at_state.pending_commands |= PC_CIDMODE;
1216 atomic_set(&cs->commands_pending, 1); //FIXME
1217 dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1218 break;
1219 case ACT_FAILINIT:
1220 warn("Could not initialize the device.");
1221 cs->dle = 0;
1222 init_failed(cs, M_UNKNOWN);
1223 cs->cur_at_seq = SEQ_NONE;
1224 break;
1225 case ACT_CONFIGMODE:
1226 init_failed(cs, M_CONFIG);
1227 cs->cur_at_seq = SEQ_NONE;
1228 break;
1229 case ACT_SETDLE1:
1230 cs->dle = 1;
1231 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1232 cs->inbuf[0].inputstate &=
1233 ~(INS_command | INS_DLE_command);
1234 break;
1235 case ACT_SETDLE0:
1236 cs->dle = 0;
1237 cs->inbuf[0].inputstate =
1238 (cs->inbuf[0].inputstate & ~INS_DLE_command)
1239 | INS_command;
1240 break;
1241 case ACT_CMODESET:
1242 if (atomic_read(&cs->mstate) == MS_INIT ||
1243 atomic_read(&cs->mstate) == MS_RECOVER) {
1244 gigaset_free_channels(cs);
1245 atomic_set(&cs->mstate, MS_READY);
1246 }
1247 atomic_set(&cs->mode, M_CID);
1248 cs->cur_at_seq = SEQ_NONE;
1249 break;
1250 case ACT_UMODESET:
1251 atomic_set(&cs->mode, M_UNIMODEM);
1252 cs->cur_at_seq = SEQ_NONE;
1253 break;
1254 case ACT_FAILCMODE:
1255 cs->cur_at_seq = SEQ_NONE;
1256 if (atomic_read(&cs->mstate) == MS_INIT ||
1257 atomic_read(&cs->mstate) == MS_RECOVER) {
1258 init_failed(cs, M_UNKNOWN);
1259 break;
1260 }
1261 if (!reinit_and_retry(cs, -1))
1262 schedule_init(cs, MS_RECOVER);
1263 break;
1264 case ACT_FAILUMODE:
1265 cs->cur_at_seq = SEQ_NONE;
1266 schedule_init(cs, MS_RECOVER);
1267 break;
1268 case ACT_HUPMODEM:
1269 /* send "+++" (hangup in unimodem mode) */
1270 cs->ops->write_cmd(cs, "+++", 3, NULL);
1271 break;
1272 case ACT_RING:
1273 /* get fresh AT state structure for new CID */
1274 at_state2 = get_free_channel(cs, ev->parameter);
1275 if (!at_state2) {
1276 warn("RING ignored: "
1277 "could not allocate channel structure");
1278 break;
1279 }
1280
1281 /* initialize AT state structure
1282 * note that bcs may be NULL if no B channel is free
1283 */
1284 at_state2->ConState = 700;
1285 kfree(at_state2->str_var[STR_NMBR]);
1286 at_state2->str_var[STR_NMBR] = NULL;
1287 kfree(at_state2->str_var[STR_ZCPN]);
1288 at_state2->str_var[STR_ZCPN] = NULL;
1289 kfree(at_state2->str_var[STR_ZBC]);
1290 at_state2->str_var[STR_ZBC] = NULL;
1291 kfree(at_state2->str_var[STR_ZHLC]);
1292 at_state2->str_var[STR_ZHLC] = NULL;
1293 at_state2->int_var[VAR_ZCTP] = -1;
1294
1295 spin_lock_irqsave(&cs->lock, flags);
1296 at_state2->timer_expires = RING_TIMEOUT;
1297 at_state2->timer_active = 1;
1298 spin_unlock_irqrestore(&cs->lock, flags);
1299 break;
1300 case ACT_ICALL:
1301 handle_icall(cs, bcs, p_at_state);
1302 at_state = *p_at_state;
1303 break;
1304 case ACT_FAILSDOWN:
1305 warn("Could not shut down the device.");
1306 /* fall through */
1307 case ACT_FAKESDOWN:
1308 case ACT_SDOWN:
1309 cs->cur_at_seq = SEQ_NONE;
1310 finish_shutdown(cs);
1311 break;
1312 case ACT_CONNECT:
1313 if (cs->onechannel) {
1314 at_state->pending_commands |= PC_DLE1;
1315 atomic_set(&cs->commands_pending, 1);
1316 break;
1317 }
1318 bcs->chstate |= CHS_D_UP;
1319 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1320 cs->ops->init_bchannel(bcs);
1321 break;
1322 case ACT_DLE1:
1323 cs->cur_at_seq = SEQ_NONE;
1324 bcs = cs->bcs + cs->curchannel;
1325
1326 bcs->chstate |= CHS_D_UP;
1327 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1328 cs->ops->init_bchannel(bcs);
1329 break;
1330 case ACT_FAKEHUP:
1331 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1332 /* fall through */
1333 case ACT_DISCONNECT:
1334 cs->cur_at_seq = SEQ_NONE;
1335 at_state->cid = -1;
1336 if (bcs && cs->onechannel && cs->dle) {
1337 /* Check for other open channels not needed:
1338 * DLE only used for M10x with one B channel.
1339 */
1340 at_state->pending_commands |= PC_DLE0;
1341 atomic_set(&cs->commands_pending, 1);
1342 } else {
1343 disconnect(p_at_state);
1344 at_state = *p_at_state;
1345 }
1346 break;
1347 case ACT_FAKEDLE0:
1348 at_state->int_var[VAR_ZDLE] = 0;
1349 cs->dle = 0;
1350 /* fall through */
1351 case ACT_DLE0:
1352 cs->cur_at_seq = SEQ_NONE;
1353 at_state2 = &cs->bcs[cs->curchannel].at_state;
1354 disconnect(&at_state2);
1355 break;
1356 case ACT_ABORTHUP:
1357 cs->cur_at_seq = SEQ_NONE;
1358 warn("Could not hang up.");
1359 at_state->cid = -1;
1360 if (bcs && cs->onechannel)
1361 at_state->pending_commands |= PC_DLE0;
1362 else {
1363 disconnect(p_at_state);
1364 at_state = *p_at_state;
1365 }
1366 schedule_init(cs, MS_RECOVER);
1367 break;
1368 case ACT_FAILDLE0:
1369 cs->cur_at_seq = SEQ_NONE;
1370 warn("Could not leave DLE mode.");
1371 at_state2 = &cs->bcs[cs->curchannel].at_state;
1372 disconnect(&at_state2);
1373 schedule_init(cs, MS_RECOVER);
1374 break;
1375 case ACT_FAILDLE1:
1376 cs->cur_at_seq = SEQ_NONE;
1377 warn("Could not enter DLE mode. Try to hang up.");
1378 channel = cs->curchannel;
1379 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1380 atomic_set(&cs->commands_pending, 1);
1381 break;
1382
1383 case ACT_CID: /* got cid; start dialing */
1384 cs->cur_at_seq = SEQ_NONE;
1385 channel = cs->curchannel;
1386 if (ev->parameter > 0 && ev->parameter <= 65535) {
1387 cs->bcs[channel].at_state.cid = ev->parameter;
1388 cs->bcs[channel].at_state.pending_commands |=
1389 PC_DIAL;
1390 atomic_set(&cs->commands_pending, 1);
1391 break;
1392 }
1393 /* fall through */
1394 case ACT_FAILCID:
1395 cs->cur_at_seq = SEQ_NONE;
1396 channel = cs->curchannel;
1397 if (!reinit_and_retry(cs, channel)) {
1398 warn("Could not get a call id. Dialing not possible");
1399 at_state2 = &cs->bcs[channel].at_state;
1400 disconnect(&at_state2);
1401 }
1402 break;
1403 case ACT_ABORTCID:
1404 cs->cur_at_seq = SEQ_NONE;
1405 at_state2 = &cs->bcs[cs->curchannel].at_state;
1406 disconnect(&at_state2);
1407 break;
1408
1409 case ACT_DIALING:
1410 case ACT_ACCEPTED:
1411 cs->cur_at_seq = SEQ_NONE;
1412 break;
1413
1414 case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL processing */
1415 disconnect(p_at_state);
1416 at_state = *p_at_state;
1417 break;
1418
1419 case ACT_ABORTDIAL: /* error/timeout during dial preparation */
1420 cs->cur_at_seq = SEQ_NONE;
1421 at_state->pending_commands |= PC_HUP;
1422 atomic_set(&cs->commands_pending, 1);
1423 break;
1424
1425 case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
1426 case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
1427 case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
1428 at_state->pending_commands |= PC_HUP;
1429 atomic_set(&cs->commands_pending, 1);
1430 break;
1431 case ACT_GETSTRING: /* warning: RING, ZDLE, ... are not handled properly any more */
1432 at_state->getstring = 1;
1433 break;
1434 case ACT_SETVER:
1435 if (!ev->ptr) {
1436 *p_genresp = 1;
1437 *p_resp_code = RSP_ERROR;
1438 break;
1439 }
1440 s = ev->ptr;
1441
1442 if (!strcmp(s, "OK")) {
1443 *p_genresp = 1;
1444 *p_resp_code = RSP_ERROR;
1445 break;
1446 }
1447
1448 for (i = 0; i < 4; ++i) {
1449 val = simple_strtoul(s, (char **) &e, 10);
1450 if (val > INT_MAX || e == s)
1451 break;
1452 if (i == 3) {
1453 if (*e)
1454 break;
1455 } else if (*e != '.')
1456 break;
1457 else
1458 s = e + 1;
1459 cs->fwver[i] = val;
1460 }
1461 if (i != 4) {
1462 *p_genresp = 1;
1463 *p_resp_code = RSP_ERROR;
1464 break;
1465 }
1466 /*at_state->getstring = 1;*/
1467 cs->gotfwver = 0;
1468 break;
1469 case ACT_GOTVER:
1470 if (cs->gotfwver == 0) {
1471 cs->gotfwver = 1;
1472 dbg(DEBUG_ANY,
1473 "firmware version %02d.%03d.%02d.%02d",
1474 cs->fwver[0], cs->fwver[1],
1475 cs->fwver[2], cs->fwver[3]);
1476 break;
1477 }
1478 /* fall through */
1479 case ACT_FAILVER:
1480 cs->gotfwver = -1;
1481 err("could not read firmware version.");
1482 break;
1483 #ifdef CONFIG_GIGASET_DEBUG
1484 case ACT_ERROR:
1485 *p_genresp = 1;
1486 *p_resp_code = RSP_ERROR;
1487 break;
1488 case ACT_TEST:
1489 {
1490 static int count = 3; //2; //1;
1491 *p_genresp = 1;
1492 *p_resp_code = count ? RSP_ERROR : RSP_OK;
1493 if (count > 0)
1494 --count;
1495 }
1496 break;
1497 #endif
1498 case ACT_DEBUG:
1499 dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1500 __func__, ev->type, at_state->ConState);
1501 break;
1502 case ACT_WARN:
1503 warn("%s: resp_code %d in ConState %d!",
1504 __func__, ev->type, at_state->ConState);
1505 break;
1506 case ACT_ZCAU:
1507 warn("cause code %04x in connection state %d.",
1508 ev->parameter, at_state->ConState);
1509 break;
1510
1511 /* events from the LL */
1512 case ACT_DIAL:
1513 start_dial(at_state, ev->ptr, ev->parameter);
1514 break;
1515 case ACT_ACCEPT:
1516 start_accept(at_state);
1517 break;
1518 case ACT_PROTO_L2:
1519 dbg(DEBUG_CMD,
1520 "set protocol to %u", (unsigned) ev->parameter);
1521 at_state->bcs->proto2 = ev->parameter;
1522 break;
1523 case ACT_HUP:
1524 at_state->pending_commands |= PC_HUP;
1525 atomic_set(&cs->commands_pending, 1); //FIXME
1526 dbg(DEBUG_CMD, "Scheduling PC_HUP");
1527 break;
1528
1529 /* hotplug events */
1530 case ACT_STOP:
1531 do_stop(cs);
1532 break;
1533 case ACT_START:
1534 do_start(cs);
1535 break;
1536
1537 /* events from the interface */ // FIXME without ACT_xxxx?
1538 case ACT_IF_LOCK:
1539 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1540 cs->waiting = 0;
1541 wake_up(&cs->waitqueue);
1542 break;
1543 case ACT_IF_VER:
1544 if (ev->parameter != 0)
1545 cs->cmd_result = -EINVAL;
1546 else if (cs->gotfwver != 1) {
1547 cs->cmd_result = -ENOENT;
1548 } else {
1549 memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1550 cs->cmd_result = 0;
1551 }
1552 cs->waiting = 0;
1553 wake_up(&cs->waitqueue);
1554 break;
1555
1556 /* events from the proc file system */ // FIXME without ACT_xxxx?
1557 case ACT_PROC_CIDMODE:
1558 if (ev->parameter != atomic_read(&cs->cidmode)) {
1559 atomic_set(&cs->cidmode, ev->parameter);
1560 if (ev->parameter) {
1561 cs->at_state.pending_commands |= PC_CIDMODE;
1562 dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1563 } else {
1564 cs->at_state.pending_commands |= PC_UMMODE;
1565 dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
1566 }
1567 atomic_set(&cs->commands_pending, 1);
1568 }
1569 cs->waiting = 0;
1570 wake_up(&cs->waitqueue);
1571 break;
1572
1573 /* events from the hardware drivers */
1574 case ACT_NOTIFY_BC_DOWN:
1575 bchannel_down(bcs);
1576 break;
1577 case ACT_NOTIFY_BC_UP:
1578 bchannel_up(bcs);
1579 break;
1580 case ACT_SHUTDOWN:
1581 do_shutdown(cs);
1582 break;
1583
1584
1585 default:
1586 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1587 *pp_command = at_state->bcs->commands[action - ACT_CMD];
1588 if (!*pp_command) {
1589 *p_genresp = 1;
1590 *p_resp_code = RSP_NULL;
1591 }
1592 } else
1593 err("%s: action==%d!", __func__, action);
1594 }
1595 }
1596
1597 /* State machine to do the calling and hangup procedure */
1598 static void process_event(struct cardstate *cs, struct event_t *ev)
1599 {
1600 struct bc_state *bcs;
1601 char *p_command = NULL;
1602 struct reply_t *rep;
1603 int rcode;
1604 int genresp = 0;
1605 int resp_code = RSP_ERROR;
1606 int sendcid;
1607 struct at_state_t *at_state;
1608 int index;
1609 int curact;
1610 unsigned long flags;
1611
1612 IFNULLRET(cs);
1613 IFNULLRET(ev);
1614
1615 if (ev->cid >= 0) {
1616 at_state = at_state_from_cid(cs, ev->cid);
1617 if (!at_state) {
1618 gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1619 NULL, 0, NULL);
1620 return;
1621 }
1622 } else {
1623 at_state = ev->at_state;
1624 if (at_state_invalid(cs, at_state)) {
1625 dbg(DEBUG_ANY,
1626 "event for invalid at_state %p", at_state);
1627 return;
1628 }
1629 }
1630
1631 dbg(DEBUG_CMD,
1632 "connection state %d, event %d", at_state->ConState, ev->type);
1633
1634 bcs = at_state->bcs;
1635 sendcid = at_state->cid;
1636
1637 /* Setting the pointer to the dial array */
1638 rep = at_state->replystruct;
1639 IFNULLRET(rep);
1640
1641 if (ev->type == EV_TIMEOUT) {
1642 if (ev->parameter != atomic_read(&at_state->timer_index)
1643 || !at_state->timer_active) {
1644 ev->type = RSP_NONE; /* old timeout */
1645 dbg(DEBUG_ANY, "old timeout");
1646 } else if (!at_state->waiting)
1647 dbg(DEBUG_ANY, "timeout occured");
1648 else
1649 dbg(DEBUG_ANY, "stopped waiting");
1650 }
1651
1652 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX] or at_state->str_var[STR_XXXX], set it */
1653 if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1654 index = ev->type - RSP_VAR;
1655 at_state->int_var[index] = ev->parameter;
1656 } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1657 index = ev->type - RSP_STR;
1658 kfree(at_state->str_var[index]);
1659 at_state->str_var[index] = ev->ptr;
1660 ev->ptr = NULL; /* prevent process_events() from deallocating ptr */
1661 }
1662
1663 if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1664 at_state->getstring = 0;
1665
1666 /* Search row in dial array which matches modem response and current constate */
1667 for (;; rep++) {
1668 rcode = rep->resp_code;
1669 /* dbg (DEBUG_ANY, "rcode %d", rcode); */
1670 if (rcode == RSP_LAST) {
1671 /* found nothing...*/
1672 warn("%s: rcode=RSP_LAST: resp_code %d in ConState %d!",
1673 __func__, ev->type, at_state->ConState);
1674 return;
1675 }
1676 if ((rcode == RSP_ANY || rcode == ev->type)
1677 && ((int) at_state->ConState >= rep->min_ConState)
1678 && (rep->max_ConState < 0
1679 || (int) at_state->ConState <= rep->max_ConState)
1680 && (rep->parameter < 0 || rep->parameter == ev->parameter))
1681 break;
1682 }
1683
1684 p_command = rep->command;
1685
1686 at_state->waiting = 0;
1687 for (curact = 0; curact < MAXACT; ++curact) {
1688 /* The row tells us what we should do ..
1689 */
1690 do_action(rep->action[curact], cs, bcs, &at_state, &p_command, &genresp, &resp_code, ev);
1691 if (!at_state)
1692 break; /* may be freed after disconnect */
1693 }
1694
1695 if (at_state) {
1696 /* Jump to the next con-state regarding the array */
1697 if (rep->new_ConState >= 0)
1698 at_state->ConState = rep->new_ConState;
1699
1700 if (genresp) {
1701 spin_lock_irqsave(&cs->lock, flags);
1702 at_state->timer_expires = 0; //FIXME
1703 at_state->timer_active = 0; //FIXME
1704 spin_unlock_irqrestore(&cs->lock, flags);
1705 gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
1706 } else {
1707 /* Send command to modem if not NULL... */
1708 if (p_command/*rep->command*/) {
1709 if (atomic_read(&cs->connected))
1710 send_command(cs, p_command,
1711 sendcid, cs->dle,
1712 GFP_ATOMIC);
1713 else
1714 gigaset_add_event(cs, at_state,
1715 RSP_NODEV,
1716 NULL, 0, NULL);
1717 }
1718
1719 spin_lock_irqsave(&cs->lock, flags);
1720 if (!rep->timeout) {
1721 at_state->timer_expires = 0;
1722 at_state->timer_active = 0;
1723 } else if (rep->timeout > 0) { /* new timeout */
1724 at_state->timer_expires = rep->timeout * 10;
1725 at_state->timer_active = 1;
1726 new_index(&at_state->timer_index,
1727 MAX_TIMER_INDEX);
1728 }
1729 spin_unlock_irqrestore(&cs->lock, flags);
1730 }
1731 }
1732 }
1733
1734 static void schedule_sequence(struct cardstate *cs,
1735 struct at_state_t *at_state, int sequence)
1736 {
1737 cs->cur_at_seq = sequence;
1738 gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1739 }
1740
1741 static void process_command_flags(struct cardstate *cs)
1742 {
1743 struct at_state_t *at_state = NULL;
1744 struct bc_state *bcs;
1745 int i;
1746 int sequence;
1747
1748 IFNULLRET(cs);
1749
1750 atomic_set(&cs->commands_pending, 0);
1751
1752 if (cs->cur_at_seq) {
1753 dbg(DEBUG_CMD, "not searching scheduled commands: busy");
1754 return;
1755 }
1756
1757 dbg(DEBUG_CMD, "searching scheduled commands");
1758
1759 sequence = SEQ_NONE;
1760
1761 /* clear pending_commands and hangup channels on shutdown */
1762 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1763 cs->at_state.pending_commands &= ~PC_CIDMODE;
1764 for (i = 0; i < cs->channels; ++i) {
1765 bcs = cs->bcs + i;
1766 at_state = &bcs->at_state;
1767 at_state->pending_commands &=
1768 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1769 if (at_state->cid > 0)
1770 at_state->pending_commands |= PC_HUP;
1771 if (at_state->pending_commands & PC_CID) {
1772 at_state->pending_commands |= PC_NOCID;
1773 at_state->pending_commands &= ~PC_CID;
1774 }
1775 }
1776 }
1777
1778 /* clear pending_commands and hangup channels on reset */
1779 if (cs->at_state.pending_commands & PC_INIT) {
1780 cs->at_state.pending_commands &= ~PC_CIDMODE;
1781 for (i = 0; i < cs->channels; ++i) {
1782 bcs = cs->bcs + i;
1783 at_state = &bcs->at_state;
1784 at_state->pending_commands &=
1785 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1786 if (at_state->cid > 0)
1787 at_state->pending_commands |= PC_HUP;
1788 if (atomic_read(&cs->mstate) == MS_RECOVER) {
1789 if (at_state->pending_commands & PC_CID) {
1790 at_state->pending_commands |= PC_NOCID;
1791 at_state->pending_commands &= ~PC_CID;
1792 }
1793 }
1794 }
1795 }
1796
1797 /* only switch back to unimodem mode, if no commands are pending and no channels are up */
1798 if (cs->at_state.pending_commands == PC_UMMODE
1799 && !atomic_read(&cs->cidmode)
1800 && list_empty(&cs->temp_at_states)
1801 && atomic_read(&cs->mode) == M_CID) {
1802 sequence = SEQ_UMMODE;
1803 at_state = &cs->at_state;
1804 for (i = 0; i < cs->channels; ++i) {
1805 bcs = cs->bcs + i;
1806 if (bcs->at_state.pending_commands ||
1807 bcs->at_state.cid > 0) {
1808 sequence = SEQ_NONE;
1809 break;
1810 }
1811 }
1812 }
1813 cs->at_state.pending_commands &= ~PC_UMMODE;
1814 if (sequence != SEQ_NONE) {
1815 schedule_sequence(cs, at_state, sequence);
1816 return;
1817 }
1818
1819 for (i = 0; i < cs->channels; ++i) {
1820 bcs = cs->bcs + i;
1821 if (bcs->at_state.pending_commands & PC_HUP) {
1822 bcs->at_state.pending_commands &= ~PC_HUP;
1823 if (bcs->at_state.pending_commands & PC_CID) {
1824 /* not yet dialing: PC_NOCID is sufficient */
1825 bcs->at_state.pending_commands |= PC_NOCID;
1826 bcs->at_state.pending_commands &= ~PC_CID;
1827 } else {
1828 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1829 return;
1830 }
1831 }
1832 if (bcs->at_state.pending_commands & PC_NOCID) {
1833 bcs->at_state.pending_commands &= ~PC_NOCID;
1834 cs->curchannel = bcs->channel;
1835 schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1836 return;
1837 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1838 bcs->at_state.pending_commands &= ~PC_DLE0;
1839 cs->curchannel = bcs->channel;
1840 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1841 return;
1842 }
1843 }
1844
1845 list_for_each_entry(at_state, &cs->temp_at_states, list)
1846 if (at_state->pending_commands & PC_HUP) {
1847 at_state->pending_commands &= ~PC_HUP;
1848 schedule_sequence(cs, at_state, SEQ_HUP);
1849 return;
1850 }
1851
1852 if (cs->at_state.pending_commands & PC_INIT) {
1853 cs->at_state.pending_commands &= ~PC_INIT;
1854 cs->dle = 0; //FIXME
1855 cs->inbuf->inputstate = INS_command;
1856 //FIXME reset card state (or -> LOCK0)?
1857 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1858 return;
1859 }
1860 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1861 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1862 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1863 return;
1864 }
1865 if (cs->at_state.pending_commands & PC_CIDMODE) {
1866 cs->at_state.pending_commands &= ~PC_CIDMODE;
1867 if (atomic_read(&cs->mode) == M_UNIMODEM) {
1868 #if 0
1869 cs->retry_count = 2;
1870 #else
1871 cs->retry_count = 1;
1872 #endif
1873 schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1874 return;
1875 }
1876 }
1877
1878 for (i = 0; i < cs->channels; ++i) {
1879 bcs = cs->bcs + i;
1880 if (bcs->at_state.pending_commands & PC_DLE1) {
1881 bcs->at_state.pending_commands &= ~PC_DLE1;
1882 cs->curchannel = bcs->channel;
1883 schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1884 return;
1885 }
1886 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1887 bcs->at_state.pending_commands &= ~PC_ACCEPT;
1888 schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1889 return;
1890 }
1891 if (bcs->at_state.pending_commands & PC_DIAL) {
1892 bcs->at_state.pending_commands &= ~PC_DIAL;
1893 schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1894 return;
1895 }
1896 if (bcs->at_state.pending_commands & PC_CID) {
1897 switch (atomic_read(&cs->mode)) {
1898 case M_UNIMODEM:
1899 cs->at_state.pending_commands |= PC_CIDMODE;
1900 dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1901 atomic_set(&cs->commands_pending, 1);
1902 return;
1903 #ifdef GIG_MAYINITONDIAL
1904 case M_UNKNOWN:
1905 schedule_init(cs, MS_INIT);
1906 return;
1907 #endif
1908 }
1909 bcs->at_state.pending_commands &= ~PC_CID;
1910 cs->curchannel = bcs->channel;
1911 #ifdef GIG_RETRYCID
1912 cs->retry_count = 2;
1913 #else
1914 cs->retry_count = 1;
1915 #endif
1916 schedule_sequence(cs, &cs->at_state, SEQ_CID);
1917 return;
1918 }
1919 }
1920 }
1921
1922 static void process_events(struct cardstate *cs)
1923 {
1924 struct event_t *ev;
1925 unsigned head, tail;
1926 int i;
1927 int check_flags = 0;
1928 int was_busy;
1929
1930 /* no locking needed (only one reader) */
1931 head = atomic_read(&cs->ev_head);
1932
1933 for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1934 tail = atomic_read(&cs->ev_tail);
1935 if (tail == head) {
1936 if (!check_flags && !atomic_read(&cs->commands_pending))
1937 break;
1938 check_flags = 0;
1939 process_command_flags(cs);
1940 tail = atomic_read(&cs->ev_tail);
1941 if (tail == head) {
1942 if (!atomic_read(&cs->commands_pending))
1943 break;
1944 continue;
1945 }
1946 }
1947
1948 ev = cs->events + head;
1949 was_busy = cs->cur_at_seq != SEQ_NONE;
1950 process_event(cs, ev);
1951 kfree(ev->ptr);
1952 ev->ptr = NULL;
1953 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1954 check_flags = 1;
1955
1956 head = (head + 1) % MAX_EVENTS;
1957 atomic_set(&cs->ev_head, head);
1958 }
1959
1960 if (i == 2 * MAX_EVENTS) {
1961 err("infinite loop in process_events; aborting.");
1962 }
1963 }
1964
1965 /* tasklet scheduled on any event received from the Gigaset device
1966 * parameter:
1967 * data ISDN controller state structure
1968 */
1969 void gigaset_handle_event(unsigned long data)
1970 {
1971 struct cardstate *cs = (struct cardstate *) data;
1972
1973 IFNULLRET(cs);
1974 IFNULLRET(cs->inbuf);
1975
1976 /* handle incoming data on control/common channel */
1977 if (atomic_read(&cs->inbuf->head) != atomic_read(&cs->inbuf->tail)) {
1978 dbg(DEBUG_INTR, "processing new data");
1979 cs->ops->handle_input(cs->inbuf);
1980 }
1981
1982 process_events(cs);
1983 }
Linux kernel - Deliverables
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