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[PATCH] isdn4linux: Siemens Gigaset drivers: code cleanup
[linux-2.6/mini2440.git] / drivers / isdn / gigaset / ev-layer.c
blob6c1000491231d572eb776a7fb075c1dc8bab8aaf
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 */
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 /* misc. */
377 {EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME
378
379 {RSP_ZCON, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
380 {RSP_ZCCR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
381 {RSP_ZAOC, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
382 {RSP_ZCSTR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
383
384 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
385 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
386 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
387 {RSP_LAST}
388 };
389
390
391 #if 0
392 static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME
393 {
394 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
395
396 {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
397 {RSP_LAST,0,0,0,0,0,0}
398 };
399
400 static struct reply_t tab_cid[] = /* no dle mode */ //FIXME
401 {
402 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
403
404 {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
405 {RSP_LAST,0,0,0,0,0,0}
406 };
407 #endif
408
409 static struct resp_type_t resp_type[]=
410 {
411 /*{"", RSP_EMPTY, RT_NOTHING},*/
412 {"OK", RSP_OK, RT_NOTHING},
413 {"ERROR", RSP_ERROR, RT_NOTHING},
414 {"ZSAU", RSP_ZSAU, RT_ZSAU},
415 {"ZCAU", RSP_ZCAU, RT_ZCAU},
416 {"RING", RSP_RING, RT_RING},
417 {"ZGCI", RSP_ZGCI, RT_NUMBER},
418 {"ZVLS", RSP_ZVLS, RT_NUMBER},
419 {"ZCTP", RSP_ZCTP, RT_NUMBER},
420 {"ZDLE", RSP_ZDLE, RT_NUMBER},
421 {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
422 {"ZCCR", RSP_ZCCR, RT_NUMBER},
423 {"ZMWI", RSP_ZMWI, RT_NUMBER},
424 {"ZHLC", RSP_ZHLC, RT_STRING},
425 {"ZBC", RSP_ZBC, RT_STRING},
426 {"NMBR", RSP_NMBR, RT_STRING},
427 {"ZCPN", RSP_ZCPN, RT_STRING},
428 {"ZCON", RSP_ZCON, RT_STRING},
429 {"ZAOC", RSP_ZAOC, RT_STRING},
430 {"ZCSTR", RSP_ZCSTR, RT_STRING},
431 {"ZCFG", RSP_ZCFG, RT_HEX},
432 {"ZLOG", RSP_ZLOG, RT_NOTHING},
433 {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
434 {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
435 {NULL,0,0}
436 };
437
438 /*
439 * Get integer from char-pointer
440 */
441 static int isdn_getnum(char *p)
442 {
443 int v = -1;
444
445 IFNULLRETVAL(p, -1);
446
447 dbg(DEBUG_TRANSCMD, "string: %s", p);
448
449 while (*p >= '0' && *p <= '9')
450 v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
451 if (*p)
452 v = -1; /* invalid Character */
453 return v;
454 }
455
456 /*
457 * Get integer from char-pointer
458 */
459 static int isdn_gethex(char *p)
460 {
461 int v = 0;
462 int c;
463
464 IFNULLRETVAL(p, -1);
465
466 dbg(DEBUG_TRANSCMD, "string: %s", p);
467
468 if (!*p)
469 return -1;
470
471 do {
472 if (v > (INT_MAX - 15) / 16)
473 return -1;
474 c = *p;
475 if (c >= '0' && c <= '9')
476 c -= '0';
477 else if (c >= 'a' && c <= 'f')
478 c -= 'a' - 10;
479 else if (c >= 'A' && c <= 'F')
480 c -= 'A' - 10;
481 else
482 return -1;
483 v = v * 16 + c;
484 } while (*++p);
485
486 return v;
487 }
488
489 static inline void new_index(atomic_t *index, int max)
490 {
491 if (atomic_read(index) == max) //FIXME race?
492 atomic_set(index, 0);
493 else
494 atomic_inc(index);
495 }
496
497 /* retrieve CID from parsed response
498 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
499 */
500 static int cid_of_response(char *s)
501 {
502 int cid;
503
504 if (s[-1] != ';')
505 return 0; /* no CID separator */
506 cid = isdn_getnum(s);
507 if (cid < 0)
508 return 0; /* CID not numeric */
509 if (cid < 1 || cid > 65535)
510 return -1; /* CID out of range */
511 return cid;
512 //FIXME is ;<digit>+ at end of non-CID response really impossible?
513 }
514
515 /* This function will be called via task queue from the callback handler.
516 * We received a modem response and have to handle it..
517 */
518 void gigaset_handle_modem_response(struct cardstate *cs)
519 {
520 unsigned char *argv[MAX_REC_PARAMS + 1];
521 int params;
522 int i, j;
523 struct resp_type_t *rt;
524 int curarg;
525 unsigned long flags;
526 unsigned next, tail, head;
527 struct event_t *event;
528 int resp_code;
529 int param_type;
530 int abort;
531 size_t len;
532 int cid;
533 int rawstring;
534
535 IFNULLRET(cs);
536
537 len = cs->cbytes;
538 if (!len) {
539 /* ignore additional LFs/CRs (M10x config mode or cx100) */
540 dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
541 return;
542 }
543 cs->respdata[len] = 0;
544 dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
545 argv[0] = cs->respdata;
546 params = 1;
547 if (cs->at_state.getstring) {
548 /* getstring only allowed without cid at the moment */
549 cs->at_state.getstring = 0;
550 rawstring = 1;
551 cid = 0;
552 } else {
553 /* parse line */
554 for (i = 0; i < len; i++)
555 switch (cs->respdata[i]) {
556 case ';':
557 case ',':
558 case '=':
559 if (params > MAX_REC_PARAMS) {
560 warn("too many parameters in response");
561 /* need last parameter (might be CID) */
562 params--;
563 }
564 argv[params++] = cs->respdata + i + 1;
565 }
566
567 rawstring = 0;
568 cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
569 if (cid < 0) {
570 gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
571 NULL, 0, NULL);
572 return;
573 }
574
575 for (j = 1; j < params; ++j)
576 argv[j][-1] = 0;
577
578 dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
579 if (cid) {
580 --params;
581 dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
582 }
583 dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
584 for (j = 1; j < params; j++)
585 dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
586 }
587
588 spin_lock_irqsave(&cs->ev_lock, flags);
589 head = atomic_read(&cs->ev_head);
590 tail = atomic_read(&cs->ev_tail);
591
592 abort = 1;
593 curarg = 0;
594 while (curarg < params) {
595 next = (tail + 1) % MAX_EVENTS;
596 if (unlikely(next == head)) {
597 err("event queue full");
598 break;
599 }
600
601 event = cs->events + tail;
602 event->at_state = NULL;
603 event->cid = cid;
604 event->ptr = NULL;
605 event->arg = NULL;
606 tail = next;
607
608 if (rawstring) {
609 resp_code = RSP_STRING;
610 param_type = RT_STRING;
611 } else {
612 for (rt = resp_type; rt->response; ++rt)
613 if (!strcmp(argv[curarg], rt->response))
614 break;
615
616 if (!rt->response) {
617 event->type = RSP_UNKNOWN;
618 warn("unknown modem response: %s",
619 argv[curarg]);
620 break;
621 }
622
623 resp_code = rt->resp_code;
624 param_type = rt->type;
625 ++curarg;
626 }
627
628 event->type = resp_code;
629
630 switch (param_type) {
631 case RT_NOTHING:
632 break;
633 case RT_RING:
634 if (!cid) {
635 err("received RING without CID!");
636 event->type = RSP_INVAL;
637 abort = 1;
638 } else {
639 event->cid = 0;
640 event->parameter = cid;
641 abort = 0;
642 }
643 break;
644 case RT_ZSAU:
645 if (curarg >= params) {
646 event->parameter = ZSAU_NONE;
647 break;
648 }
649 if (!strcmp(argv[curarg], "OUTGOING_CALL_PROCEEDING"))
650 event->parameter = ZSAU_OUTGOING_CALL_PROCEEDING;
651 else if (!strcmp(argv[curarg], "CALL_DELIVERED"))
652 event->parameter = ZSAU_CALL_DELIVERED;
653 else if (!strcmp(argv[curarg], "ACTIVE"))
654 event->parameter = ZSAU_ACTIVE;
655 else if (!strcmp(argv[curarg], "DISCONNECT_IND"))
656 event->parameter = ZSAU_DISCONNECT_IND;
657 else if (!strcmp(argv[curarg], "NULL"))
658 event->parameter = ZSAU_NULL;
659 else if (!strcmp(argv[curarg], "DISCONNECT_REQ"))
660 event->parameter = ZSAU_DISCONNECT_REQ;
661 else {
662 event->parameter = ZSAU_UNKNOWN;
663 warn("%s: unknown parameter %s after ZSAU",
664 __func__, argv[curarg]);
665 }
666 ++curarg;
667 break;
668 case RT_STRING:
669 if (curarg < params) {
670 len = strlen(argv[curarg]) + 1;
671 event->ptr = kmalloc(len, GFP_ATOMIC);
672 if (event->ptr)
673 memcpy(event->ptr, argv[curarg], len);
674 else
675 err("no memory for string!");
676 ++curarg;
677 }
678 #ifdef CONFIG_GIGASET_DEBUG
679 if (!event->ptr)
680 dbg(DEBUG_CMD, "string==NULL");
681 else
682 dbg(DEBUG_CMD,
683 "string==%s", (char *) event->ptr);
684 #endif
685 break;
686 case RT_ZCAU:
687 event->parameter = -1;
688 if (curarg + 1 < params) {
689 i = isdn_gethex(argv[curarg]);
690 j = isdn_gethex(argv[curarg + 1]);
691 if (i >= 0 && i < 256 && j >= 0 && j < 256)
692 event->parameter = (unsigned) i << 8
693 | j;
694 curarg += 2;
695 } else
696 curarg = params - 1;
697 break;
698 case RT_NUMBER:
699 case RT_HEX:
700 if (curarg < params) {
701 if (param_type == RT_HEX)
702 event->parameter =
703 isdn_gethex(argv[curarg]);
704 else
705 event->parameter =
706 isdn_getnum(argv[curarg]);
707 ++curarg;
708 } else
709 event->parameter = -1;
710 #ifdef CONFIG_GIGASET_DEBUG
711 dbg(DEBUG_CMD, "parameter==%d", event->parameter);
712 #endif
713 break;
714 }
715
716 if (resp_code == RSP_ZDLE)
717 cs->dle = event->parameter;
718
719 if (abort)
720 break;
721 }
722
723 atomic_set(&cs->ev_tail, tail);
724 spin_unlock_irqrestore(&cs->ev_lock, flags);
725
726 if (curarg != params)
727 dbg(DEBUG_ANY, "invalid number of processed parameters: %d/%d",
728 curarg, params);
729 }
730 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
731
732 /* disconnect
733 * process closing of connection associated with given AT state structure
734 */
735 static void disconnect(struct at_state_t **at_state_p)
736 {
737 unsigned long flags;
738 struct bc_state *bcs;
739 struct cardstate *cs;
740
741 IFNULLRET(at_state_p);
742 IFNULLRET(*at_state_p);
743 bcs = (*at_state_p)->bcs;
744 cs = (*at_state_p)->cs;
745 IFNULLRET(cs);
746
747 new_index(&(*at_state_p)->seq_index, MAX_SEQ_INDEX);
748
749 /* revert to selected idle mode */
750 if (!atomic_read(&cs->cidmode)) {
751 cs->at_state.pending_commands |= PC_UMMODE;
752 atomic_set(&cs->commands_pending, 1); //FIXME
753 dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
754 }
755
756 if (bcs) {
757 /* B channel assigned: invoke hardware specific handler */
758 cs->ops->close_bchannel(bcs);
759 } else {
760 /* no B channel assigned: just deallocate */
761 spin_lock_irqsave(&cs->lock, flags);
762 list_del(&(*at_state_p)->list);
763 kfree(*at_state_p);
764 *at_state_p = NULL;
765 spin_unlock_irqrestore(&cs->lock, flags);
766 }
767 }
768
769 /* get_free_channel
770 * get a free AT state structure: either one of those associated with the
771 * B channels of the Gigaset device, or if none of those is available,
772 * a newly allocated one with bcs=NULL
773 * The structure should be freed by calling disconnect() after use.
774 */
775 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
776 int cid)
777 /* cids: >0: siemens-cid
778 0: without cid
779 -1: no cid assigned yet
780 */
781 {
782 unsigned long flags;
783 int i;
784 struct at_state_t *ret;
785
786 for (i = 0; i < cs->channels; ++i)
787 if (gigaset_get_channel(cs->bcs + i)) {
788 ret = &cs->bcs[i].at_state;
789 ret->cid = cid;
790 return ret;
791 }
792
793 spin_lock_irqsave(&cs->lock, flags);
794 ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
795 if (ret) {
796 gigaset_at_init(ret, NULL, cs, cid);
797 list_add(&ret->list, &cs->temp_at_states);
798 }
799 spin_unlock_irqrestore(&cs->lock, flags);
800 return ret;
801 }
802
803 static void init_failed(struct cardstate *cs, int mode)
804 {
805 int i;
806 struct at_state_t *at_state;
807
808 cs->at_state.pending_commands &= ~PC_INIT;
809 atomic_set(&cs->mode, mode);
810 atomic_set(&cs->mstate, MS_UNINITIALIZED);
811 gigaset_free_channels(cs);
812 for (i = 0; i < cs->channels; ++i) {
813 at_state = &cs->bcs[i].at_state;
814 if (at_state->pending_commands & PC_CID) {
815 at_state->pending_commands &= ~PC_CID;
816 at_state->pending_commands |= PC_NOCID;
817 atomic_set(&cs->commands_pending, 1);
818 }
819 }
820 }
821
822 static void schedule_init(struct cardstate *cs, int state)
823 {
824 if (cs->at_state.pending_commands & PC_INIT) {
825 dbg(DEBUG_CMD, "not scheduling PC_INIT again");
826 return;
827 }
828 atomic_set(&cs->mstate, state);
829 atomic_set(&cs->mode, M_UNKNOWN);
830 gigaset_block_channels(cs);
831 cs->at_state.pending_commands |= PC_INIT;
832 atomic_set(&cs->commands_pending, 1);
833 dbg(DEBUG_CMD, "Scheduling PC_INIT");
834 }
835
836 /* Add "AT" to a command, add the cid, dle encode it, send the result to the
837 hardware. */
838 static void send_command(struct cardstate *cs, const char *cmd, int cid,
839 int dle, gfp_t kmallocflags)
840 {
841 size_t cmdlen, buflen;
842 char *cmdpos, *cmdbuf, *cmdtail;
843
844 cmdlen = strlen(cmd);
845 buflen = 11 + cmdlen;
846
847 if (likely(buflen > cmdlen)) {
848 cmdbuf = kmalloc(buflen, kmallocflags);
849 if (likely(cmdbuf != NULL)) {
850 cmdpos = cmdbuf + 9;
851 cmdtail = cmdpos + cmdlen;
852 memcpy(cmdpos, cmd, cmdlen);
853
854 if (cid > 0 && cid <= 65535) {
855 do {
856 *--cmdpos = '0' + cid % 10;
857 cid /= 10;
858 ++cmdlen;
859 } while (cid);
860 }
861
862 cmdlen += 2;
863 *--cmdpos = 'T';
864 *--cmdpos = 'A';
865
866 if (dle) {
867 cmdlen += 4;
868 *--cmdpos = '(';
869 *--cmdpos = 0x10;
870 *cmdtail++ = 0x10;
871 *cmdtail++ = ')';
872 }
873
874 cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
875 kfree(cmdbuf);
876 } else
877 err("no memory for command buffer");
878 } else
879 err("overflow in buflen");
880 }
881
882 static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
883 {
884 struct at_state_t *at_state;
885 int i;
886 unsigned long flags;
887
888 if (cid == 0)
889 return &cs->at_state;
890
891 for (i = 0; i < cs->channels; ++i)
892 if (cid == cs->bcs[i].at_state.cid)
893 return &cs->bcs[i].at_state;
894
895 spin_lock_irqsave(&cs->lock, flags);
896
897 list_for_each_entry(at_state, &cs->temp_at_states, list)
898 if (cid == at_state->cid) {
899 spin_unlock_irqrestore(&cs->lock, flags);
900 return at_state;
901 }
902
903 spin_unlock_irqrestore(&cs->lock, flags);
904
905 return NULL;
906 }
907
908 static void bchannel_down(struct bc_state *bcs)
909 {
910 IFNULLRET(bcs);
911 IFNULLRET(bcs->cs);
912
913 if (bcs->chstate & CHS_B_UP) {
914 bcs->chstate &= ~CHS_B_UP;
915 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
916 }
917
918 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
919 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
920 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
921 }
922
923 gigaset_free_channel(bcs);
924
925 gigaset_bcs_reinit(bcs);
926 }
927
928 static void bchannel_up(struct bc_state *bcs)
929 {
930 IFNULLRET(bcs);
931
932 if (!(bcs->chstate & CHS_D_UP)) {
933 notice("%s: D channel not up", __func__);
934 bcs->chstate |= CHS_D_UP;
935 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
936 }
937
938 if (bcs->chstate & CHS_B_UP) {
939 notice("%s: B channel already up", __func__);
940 return;
941 }
942
943 bcs->chstate |= CHS_B_UP;
944 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
945 }
946
947 static void start_dial(struct at_state_t *at_state, void *data, int seq_index)
948 {
949 struct bc_state *bcs = at_state->bcs;
950 struct cardstate *cs = at_state->cs;
951 int retval;
952
953 bcs->chstate |= CHS_NOTIFY_LL;
954 //atomic_set(&bcs->status, BCS_INIT);
955
956 if (atomic_read(&at_state->seq_index) != seq_index)
957 goto error;
958
959 retval = gigaset_isdn_setup_dial(at_state, data);
960 if (retval != 0)
961 goto error;
962
963
964 at_state->pending_commands |= PC_CID;
965 dbg(DEBUG_CMD, "Scheduling PC_CID");
966 atomic_set(&cs->commands_pending, 1);
967 return;
968
969 error:
970 at_state->pending_commands |= PC_NOCID;
971 dbg(DEBUG_CMD, "Scheduling PC_NOCID");
972 atomic_set(&cs->commands_pending, 1);
973 return;
974 }
975
976 static void start_accept(struct at_state_t *at_state)
977 {
978 struct cardstate *cs = at_state->cs;
979 int retval;
980
981 retval = gigaset_isdn_setup_accept(at_state);
982
983 if (retval == 0) {
984 at_state->pending_commands |= PC_ACCEPT;
985 dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
986 atomic_set(&cs->commands_pending, 1);
987 } else {
988 //FIXME
989 at_state->pending_commands |= PC_HUP;
990 dbg(DEBUG_CMD, "Scheduling PC_HUP");
991 atomic_set(&cs->commands_pending, 1);
992 }
993 }
994
995 static void do_start(struct cardstate *cs)
996 {
997 gigaset_free_channels(cs);
998
999 if (atomic_read(&cs->mstate) != MS_LOCKED)
1000 schedule_init(cs, MS_INIT);
1001
1002 gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
1003 // FIXME: not in locked mode
1004 // FIXME 2: only after init sequence
1005
1006 cs->waiting = 0;
1007 wake_up(&cs->waitqueue);
1008 }
1009
1010 static void finish_shutdown(struct cardstate *cs)
1011 {
1012 if (atomic_read(&cs->mstate) != MS_LOCKED) {
1013 atomic_set(&cs->mstate, MS_UNINITIALIZED);
1014 atomic_set(&cs->mode, M_UNKNOWN);
1015 }
1016
1017 /* The rest is done by cleanup_cs () in user mode. */
1018
1019 cs->cmd_result = -ENODEV;
1020 cs->waiting = 0;
1021 wake_up_interruptible(&cs->waitqueue);
1022 }
1023
1024 static void do_shutdown(struct cardstate *cs)
1025 {
1026 gigaset_block_channels(cs);
1027
1028 if (atomic_read(&cs->mstate) == MS_READY) {
1029 atomic_set(&cs->mstate, MS_SHUTDOWN);
1030 cs->at_state.pending_commands |= PC_SHUTDOWN;
1031 atomic_set(&cs->commands_pending, 1);
1032 dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN");
1033 } else
1034 finish_shutdown(cs);
1035 }
1036
1037 static void do_stop(struct cardstate *cs)
1038 {
1039 do_shutdown(cs);
1040 }
1041
1042 /* Entering cid mode or getting a cid failed:
1043 * try to initialize the device and try again.
1044 *
1045 * channel >= 0: getting cid for the channel failed
1046 * channel < 0: entering cid mode failed
1047 *
1048 * returns 0 on failure
1049 */
1050 static int reinit_and_retry(struct cardstate *cs, int channel)
1051 {
1052 int i;
1053
1054 if (--cs->retry_count <= 0)
1055 return 0;
1056
1057 for (i = 0; i < cs->channels; ++i)
1058 if (cs->bcs[i].at_state.cid > 0)
1059 return 0;
1060
1061 if (channel < 0)
1062 warn("Could not enter cid mode. Reinit device and try again.");
1063 else {
1064 warn("Could not get a call id. Reinit device and try again.");
1065 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1066 }
1067 schedule_init(cs, MS_INIT);
1068 return 1;
1069 }
1070
1071 static int at_state_invalid(struct cardstate *cs,
1072 struct at_state_t *test_ptr)
1073 {
1074 unsigned long flags;
1075 unsigned channel;
1076 struct at_state_t *at_state;
1077 int retval = 0;
1078
1079 spin_lock_irqsave(&cs->lock, flags);
1080
1081 if (test_ptr == &cs->at_state)
1082 goto exit;
1083
1084 list_for_each_entry(at_state, &cs->temp_at_states, list)
1085 if (at_state == test_ptr)
1086 goto exit;
1087
1088 for (channel = 0; channel < cs->channels; ++channel)
1089 if (&cs->bcs[channel].at_state == test_ptr)
1090 goto exit;
1091
1092 retval = 1;
1093 exit:
1094 spin_unlock_irqrestore(&cs->lock, flags);
1095 return retval;
1096 }
1097
1098 static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1099 struct at_state_t **p_at_state)
1100 {
1101 int retval;
1102 struct at_state_t *at_state = *p_at_state;
1103
1104 retval = gigaset_isdn_icall(at_state);
1105 switch (retval) {
1106 case ICALL_ACCEPT:
1107 break;
1108 default:
1109 err("internal error: disposition=%d", retval);
1110 /* --v-- fall through --v-- */
1111 case ICALL_IGNORE:
1112 case ICALL_REJECT:
1113 /* hang up actively
1114 * Device doc says that would reject the call.
1115 * In fact it doesn't.
1116 */
1117 at_state->pending_commands |= PC_HUP;
1118 atomic_set(&cs->commands_pending, 1);
1119 break;
1120 }
1121 }
1122
1123 static int do_lock(struct cardstate *cs)
1124 {
1125 int mode;
1126 int i;
1127
1128 switch (atomic_read(&cs->mstate)) {
1129 case MS_UNINITIALIZED:
1130 case MS_READY:
1131 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1132 cs->at_state.pending_commands)
1133 return -EBUSY;
1134
1135 for (i = 0; i < cs->channels; ++i)
1136 if (cs->bcs[i].at_state.pending_commands)
1137 return -EBUSY;
1138
1139 if (!gigaset_get_channels(cs))
1140 return -EBUSY;
1141
1142 break;
1143 case MS_LOCKED:
1144 //retval = -EACCES;
1145 break;
1146 default:
1147 return -EBUSY;
1148 }
1149
1150 mode = atomic_read(&cs->mode);
1151 atomic_set(&cs->mstate, MS_LOCKED);
1152 atomic_set(&cs->mode, M_UNKNOWN);
1153
1154 return mode;
1155 }
1156
1157 static int do_unlock(struct cardstate *cs)
1158 {
1159 if (atomic_read(&cs->mstate) != MS_LOCKED)
1160 return -EINVAL;
1161
1162 atomic_set(&cs->mstate, MS_UNINITIALIZED);
1163 atomic_set(&cs->mode, M_UNKNOWN);
1164 gigaset_free_channels(cs);
1165 if (atomic_read(&cs->connected))
1166 schedule_init(cs, MS_INIT);
1167
1168 return 0;
1169 }
1170
1171 static void do_action(int action, struct cardstate *cs,
1172 struct bc_state *bcs,
1173 struct at_state_t **p_at_state, char **pp_command,
1174 int *p_genresp, int *p_resp_code,
1175 struct event_t *ev)
1176 {
1177 struct at_state_t *at_state = *p_at_state;
1178 struct at_state_t *at_state2;
1179 unsigned long flags;
1180
1181 int channel;
1182
1183 unsigned char *s, *e;
1184 int i;
1185 unsigned long val;
1186
1187 switch (action) {
1188 case ACT_NOTHING:
1189 break;
1190 case ACT_TIMEOUT:
1191 at_state->waiting = 1;
1192 break;
1193 case ACT_INIT:
1194 cs->at_state.pending_commands &= ~PC_INIT;
1195 cs->cur_at_seq = SEQ_NONE;
1196 atomic_set(&cs->mode, M_UNIMODEM);
1197 if (!atomic_read(&cs->cidmode)) {
1198 gigaset_free_channels(cs);
1199 atomic_set(&cs->mstate, MS_READY);
1200 break;
1201 }
1202 cs->at_state.pending_commands |= PC_CIDMODE;
1203 atomic_set(&cs->commands_pending, 1);
1204 dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1205 break;
1206 case ACT_FAILINIT:
1207 warn("Could not initialize the device.");
1208 cs->dle = 0;
1209 init_failed(cs, M_UNKNOWN);
1210 cs->cur_at_seq = SEQ_NONE;
1211 break;
1212 case ACT_CONFIGMODE:
1213 init_failed(cs, M_CONFIG);
1214 cs->cur_at_seq = SEQ_NONE;
1215 break;
1216 case ACT_SETDLE1:
1217 cs->dle = 1;
1218 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1219 cs->inbuf[0].inputstate &=
1220 ~(INS_command | INS_DLE_command);
1221 break;
1222 case ACT_SETDLE0:
1223 cs->dle = 0;
1224 cs->inbuf[0].inputstate =
1225 (cs->inbuf[0].inputstate & ~INS_DLE_command)
1226 | INS_command;
1227 break;
1228 case ACT_CMODESET:
1229 if (atomic_read(&cs->mstate) == MS_INIT ||
1230 atomic_read(&cs->mstate) == MS_RECOVER) {
1231 gigaset_free_channels(cs);
1232 atomic_set(&cs->mstate, MS_READY);
1233 }
1234 atomic_set(&cs->mode, M_CID);
1235 cs->cur_at_seq = SEQ_NONE;
1236 break;
1237 case ACT_UMODESET:
1238 atomic_set(&cs->mode, M_UNIMODEM);
1239 cs->cur_at_seq = SEQ_NONE;
1240 break;
1241 case ACT_FAILCMODE:
1242 cs->cur_at_seq = SEQ_NONE;
1243 if (atomic_read(&cs->mstate) == MS_INIT ||
1244 atomic_read(&cs->mstate) == MS_RECOVER) {
1245 init_failed(cs, M_UNKNOWN);
1246 break;
1247 }
1248 if (!reinit_and_retry(cs, -1))
1249 schedule_init(cs, MS_RECOVER);
1250 break;
1251 case ACT_FAILUMODE:
1252 cs->cur_at_seq = SEQ_NONE;
1253 schedule_init(cs, MS_RECOVER);
1254 break;
1255 case ACT_HUPMODEM:
1256 /* send "+++" (hangup in unimodem mode) */
1257 cs->ops->write_cmd(cs, "+++", 3, NULL);
1258 break;
1259 case ACT_RING:
1260 /* get fresh AT state structure for new CID */
1261 at_state2 = get_free_channel(cs, ev->parameter);
1262 if (!at_state2) {
1263 warn("RING ignored: "
1264 "could not allocate channel structure");
1265 break;
1266 }
1267
1268 /* initialize AT state structure
1269 * note that bcs may be NULL if no B channel is free
1270 */
1271 at_state2->ConState = 700;
1272 kfree(at_state2->str_var[STR_NMBR]);
1273 at_state2->str_var[STR_NMBR] = NULL;
1274 kfree(at_state2->str_var[STR_ZCPN]);
1275 at_state2->str_var[STR_ZCPN] = NULL;
1276 kfree(at_state2->str_var[STR_ZBC]);
1277 at_state2->str_var[STR_ZBC] = NULL;
1278 kfree(at_state2->str_var[STR_ZHLC]);
1279 at_state2->str_var[STR_ZHLC] = NULL;
1280 at_state2->int_var[VAR_ZCTP] = -1;
1281
1282 spin_lock_irqsave(&cs->lock, flags);
1283 at_state2->timer_expires = RING_TIMEOUT;
1284 at_state2->timer_active = 1;
1285 spin_unlock_irqrestore(&cs->lock, flags);
1286 break;
1287 case ACT_ICALL:
1288 handle_icall(cs, bcs, p_at_state);
1289 at_state = *p_at_state;
1290 break;
1291 case ACT_FAILSDOWN:
1292 warn("Could not shut down the device.");
1293 /* fall through */
1294 case ACT_FAKESDOWN:
1295 case ACT_SDOWN:
1296 cs->cur_at_seq = SEQ_NONE;
1297 finish_shutdown(cs);
1298 break;
1299 case ACT_CONNECT:
1300 if (cs->onechannel) {
1301 at_state->pending_commands |= PC_DLE1;
1302 atomic_set(&cs->commands_pending, 1);
1303 break;
1304 }
1305 bcs->chstate |= CHS_D_UP;
1306 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1307 cs->ops->init_bchannel(bcs);
1308 break;
1309 case ACT_DLE1:
1310 cs->cur_at_seq = SEQ_NONE;
1311 bcs = cs->bcs + cs->curchannel;
1312
1313 bcs->chstate |= CHS_D_UP;
1314 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1315 cs->ops->init_bchannel(bcs);
1316 break;
1317 case ACT_FAKEHUP:
1318 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1319 /* fall through */
1320 case ACT_DISCONNECT:
1321 cs->cur_at_seq = SEQ_NONE;
1322 at_state->cid = -1;
1323 if (bcs && cs->onechannel && cs->dle) {
1324 /* Check for other open channels not needed:
1325 * DLE only used for M10x with one B channel.
1326 */
1327 at_state->pending_commands |= PC_DLE0;
1328 atomic_set(&cs->commands_pending, 1);
1329 } else {
1330 disconnect(p_at_state);
1331 at_state = *p_at_state;
1332 }
1333 break;
1334 case ACT_FAKEDLE0:
1335 at_state->int_var[VAR_ZDLE] = 0;
1336 cs->dle = 0;
1337 /* fall through */
1338 case ACT_DLE0:
1339 cs->cur_at_seq = SEQ_NONE;
1340 at_state2 = &cs->bcs[cs->curchannel].at_state;
1341 disconnect(&at_state2);
1342 break;
1343 case ACT_ABORTHUP:
1344 cs->cur_at_seq = SEQ_NONE;
1345 warn("Could not hang up.");
1346 at_state->cid = -1;
1347 if (bcs && cs->onechannel)
1348 at_state->pending_commands |= PC_DLE0;
1349 else {
1350 disconnect(p_at_state);
1351 at_state = *p_at_state;
1352 }
1353 schedule_init(cs, MS_RECOVER);
1354 break;
1355 case ACT_FAILDLE0:
1356 cs->cur_at_seq = SEQ_NONE;
1357 warn("Could not leave DLE mode.");
1358 at_state2 = &cs->bcs[cs->curchannel].at_state;
1359 disconnect(&at_state2);
1360 schedule_init(cs, MS_RECOVER);
1361 break;
1362 case ACT_FAILDLE1:
1363 cs->cur_at_seq = SEQ_NONE;
1364 warn("Could not enter DLE mode. Try to hang up.");
1365 channel = cs->curchannel;
1366 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1367 atomic_set(&cs->commands_pending, 1);
1368 break;
1369
1370 case ACT_CID: /* got cid; start dialing */
1371 cs->cur_at_seq = SEQ_NONE;
1372 channel = cs->curchannel;
1373 if (ev->parameter > 0 && ev->parameter <= 65535) {
1374 cs->bcs[channel].at_state.cid = ev->parameter;
1375 cs->bcs[channel].at_state.pending_commands |=
1376 PC_DIAL;
1377 atomic_set(&cs->commands_pending, 1);
1378 break;
1379 }
1380 /* fall through */
1381 case ACT_FAILCID:
1382 cs->cur_at_seq = SEQ_NONE;
1383 channel = cs->curchannel;
1384 if (!reinit_and_retry(cs, channel)) {
1385 warn("Could not get a call id. Dialing not possible");
1386 at_state2 = &cs->bcs[channel].at_state;
1387 disconnect(&at_state2);
1388 }
1389 break;
1390 case ACT_ABORTCID:
1391 cs->cur_at_seq = SEQ_NONE;
1392 at_state2 = &cs->bcs[cs->curchannel].at_state;
1393 disconnect(&at_state2);
1394 break;
1395
1396 case ACT_DIALING:
1397 case ACT_ACCEPTED:
1398 cs->cur_at_seq = SEQ_NONE;
1399 break;
1400
1401 case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL processing */
1402 disconnect(p_at_state);
1403 at_state = *p_at_state;
1404 break;
1405
1406 case ACT_ABORTDIAL: /* error/timeout during dial preparation */
1407 cs->cur_at_seq = SEQ_NONE;
1408 at_state->pending_commands |= PC_HUP;
1409 atomic_set(&cs->commands_pending, 1);
1410 break;
1411
1412 case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
1413 case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
1414 case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
1415 at_state->pending_commands |= PC_HUP;
1416 atomic_set(&cs->commands_pending, 1);
1417 break;
1418 case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1419 are not handled properly any more */
1420 at_state->getstring = 1;
1421 break;
1422 case ACT_SETVER:
1423 if (!ev->ptr) {
1424 *p_genresp = 1;
1425 *p_resp_code = RSP_ERROR;
1426 break;
1427 }
1428 s = ev->ptr;
1429
1430 if (!strcmp(s, "OK")) {
1431 *p_genresp = 1;
1432 *p_resp_code = RSP_ERROR;
1433 break;
1434 }
1435
1436 for (i = 0; i < 4; ++i) {
1437 val = simple_strtoul(s, (char **) &e, 10);
1438 if (val > INT_MAX || e == s)
1439 break;
1440 if (i == 3) {
1441 if (*e)
1442 break;
1443 } else if (*e != '.')
1444 break;
1445 else
1446 s = e + 1;
1447 cs->fwver[i] = val;
1448 }
1449 if (i != 4) {
1450 *p_genresp = 1;
1451 *p_resp_code = RSP_ERROR;
1452 break;
1453 }
1454 /*at_state->getstring = 1;*/
1455 cs->gotfwver = 0;
1456 break;
1457 case ACT_GOTVER:
1458 if (cs->gotfwver == 0) {
1459 cs->gotfwver = 1;
1460 dbg(DEBUG_ANY,
1461 "firmware version %02d.%03d.%02d.%02d",
1462 cs->fwver[0], cs->fwver[1],
1463 cs->fwver[2], cs->fwver[3]);
1464 break;
1465 }
1466 /* fall through */
1467 case ACT_FAILVER:
1468 cs->gotfwver = -1;
1469 err("could not read firmware version.");
1470 break;
1471 #ifdef CONFIG_GIGASET_DEBUG
1472 case ACT_ERROR:
1473 *p_genresp = 1;
1474 *p_resp_code = RSP_ERROR;
1475 break;
1476 case ACT_TEST:
1477 {
1478 static int count = 3; //2; //1;
1479 *p_genresp = 1;
1480 *p_resp_code = count ? RSP_ERROR : RSP_OK;
1481 if (count > 0)
1482 --count;
1483 }
1484 break;
1485 #endif
1486 case ACT_DEBUG:
1487 dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1488 __func__, ev->type, at_state->ConState);
1489 break;
1490 case ACT_WARN:
1491 warn("%s: resp_code %d in ConState %d!",
1492 __func__, ev->type, at_state->ConState);
1493 break;
1494 case ACT_ZCAU:
1495 warn("cause code %04x in connection state %d.",
1496 ev->parameter, at_state->ConState);
1497 break;
1498
1499 /* events from the LL */
1500 case ACT_DIAL:
1501 start_dial(at_state, ev->ptr, ev->parameter);
1502 break;
1503 case ACT_ACCEPT:
1504 start_accept(at_state);
1505 break;
1506 case ACT_PROTO_L2:
1507 dbg(DEBUG_CMD,
1508 "set protocol to %u", (unsigned) ev->parameter);
1509 at_state->bcs->proto2 = ev->parameter;
1510 break;
1511 case ACT_HUP:
1512 at_state->pending_commands |= PC_HUP;
1513 atomic_set(&cs->commands_pending, 1);
1514 dbg(DEBUG_CMD, "Scheduling PC_HUP");
1515 break;
1516
1517 /* hotplug events */
1518 case ACT_STOP:
1519 do_stop(cs);
1520 break;
1521 case ACT_START:
1522 do_start(cs);
1523 break;
1524
1525 /* events from the interface */ // FIXME without ACT_xxxx?
1526 case ACT_IF_LOCK:
1527 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1528 cs->waiting = 0;
1529 wake_up(&cs->waitqueue);
1530 break;
1531 case ACT_IF_VER:
1532 if (ev->parameter != 0)
1533 cs->cmd_result = -EINVAL;
1534 else if (cs->gotfwver != 1) {
1535 cs->cmd_result = -ENOENT;
1536 } else {
1537 memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1538 cs->cmd_result = 0;
1539 }
1540 cs->waiting = 0;
1541 wake_up(&cs->waitqueue);
1542 break;
1543
1544 /* events from the proc file system */ // FIXME without ACT_xxxx?
1545 case ACT_PROC_CIDMODE:
1546 if (ev->parameter != atomic_read(&cs->cidmode)) {
1547 atomic_set(&cs->cidmode, ev->parameter);
1548 if (ev->parameter) {
1549 cs->at_state.pending_commands |= PC_CIDMODE;
1550 dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1551 } else {
1552 cs->at_state.pending_commands |= PC_UMMODE;
1553 dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
1554 }
1555 atomic_set(&cs->commands_pending, 1);
1556 }
1557 cs->waiting = 0;
1558 wake_up(&cs->waitqueue);
1559 break;
1560
1561 /* events from the hardware drivers */
1562 case ACT_NOTIFY_BC_DOWN:
1563 bchannel_down(bcs);
1564 break;
1565 case ACT_NOTIFY_BC_UP:
1566 bchannel_up(bcs);
1567 break;
1568 case ACT_SHUTDOWN:
1569 do_shutdown(cs);
1570 break;
1571
1572
1573 default:
1574 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1575 *pp_command = at_state->bcs->commands[action - ACT_CMD];
1576 if (!*pp_command) {
1577 *p_genresp = 1;
1578 *p_resp_code = RSP_NULL;
1579 }
1580 } else
1581 err("%s: action==%d!", __func__, action);
1582 }
1583 }
1584
1585 /* State machine to do the calling and hangup procedure */
1586 static void process_event(struct cardstate *cs, struct event_t *ev)
1587 {
1588 struct bc_state *bcs;
1589 char *p_command = NULL;
1590 struct reply_t *rep;
1591 int rcode;
1592 int genresp = 0;
1593 int resp_code = RSP_ERROR;
1594 int sendcid;
1595 struct at_state_t *at_state;
1596 int index;
1597 int curact;
1598 unsigned long flags;
1599
1600 IFNULLRET(cs);
1601 IFNULLRET(ev);
1602
1603 if (ev->cid >= 0) {
1604 at_state = at_state_from_cid(cs, ev->cid);
1605 if (!at_state) {
1606 gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1607 NULL, 0, NULL);
1608 return;
1609 }
1610 } else {
1611 at_state = ev->at_state;
1612 if (at_state_invalid(cs, at_state)) {
1613 dbg(DEBUG_ANY,
1614 "event for invalid at_state %p", at_state);
1615 return;
1616 }
1617 }
1618
1619 dbg(DEBUG_CMD,
1620 "connection state %d, event %d", at_state->ConState, ev->type);
1621
1622 bcs = at_state->bcs;
1623 sendcid = at_state->cid;
1624
1625 /* Setting the pointer to the dial array */
1626 rep = at_state->replystruct;
1627 IFNULLRET(rep);
1628
1629 if (ev->type == EV_TIMEOUT) {
1630 if (ev->parameter != atomic_read(&at_state->timer_index)
1631 || !at_state->timer_active) {
1632 ev->type = RSP_NONE; /* old timeout */
1633 dbg(DEBUG_ANY, "old timeout");
1634 } else if (!at_state->waiting)
1635 dbg(DEBUG_ANY, "timeout occured");
1636 else
1637 dbg(DEBUG_ANY, "stopped waiting");
1638 }
1639
1640 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1641 or at_state->str_var[STR_XXXX], set it */
1642 if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1643 index = ev->type - RSP_VAR;
1644 at_state->int_var[index] = ev->parameter;
1645 } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1646 index = ev->type - RSP_STR;
1647 kfree(at_state->str_var[index]);
1648 at_state->str_var[index] = ev->ptr;
1649 ev->ptr = NULL; /* prevent process_events() from
1650 deallocating ptr */
1651 }
1652
1653 if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1654 at_state->getstring = 0;
1655
1656 /* Search row in dial array which matches modem response and current
1657 constate */
1658 for (;; rep++) {
1659 rcode = rep->resp_code;
1660 /* dbg (DEBUG_ANY, "rcode %d", rcode); */
1661 if (rcode == RSP_LAST) {
1662 /* found nothing...*/
1663 warn("%s: rcode=RSP_LAST: resp_code %d in ConState %d!",
1664 __func__, ev->type, at_state->ConState);
1665 return;
1666 }
1667 if ((rcode == RSP_ANY || rcode == ev->type)
1668 && ((int) at_state->ConState >= rep->min_ConState)
1669 && (rep->max_ConState < 0
1670 || (int) at_state->ConState <= rep->max_ConState)
1671 && (rep->parameter < 0 || rep->parameter == ev->parameter))
1672 break;
1673 }
1674
1675 p_command = rep->command;
1676
1677 at_state->waiting = 0;
1678 for (curact = 0; curact < MAXACT; ++curact) {
1679 /* The row tells us what we should do ..
1680 */
1681 do_action(rep->action[curact], cs, bcs, &at_state, &p_command, &genresp, &resp_code, ev);
1682 if (!at_state)
1683 break; /* may be freed after disconnect */
1684 }
1685
1686 if (at_state) {
1687 /* Jump to the next con-state regarding the array */
1688 if (rep->new_ConState >= 0)
1689 at_state->ConState = rep->new_ConState;
1690
1691 if (genresp) {
1692 spin_lock_irqsave(&cs->lock, flags);
1693 at_state->timer_expires = 0; //FIXME
1694 at_state->timer_active = 0; //FIXME
1695 spin_unlock_irqrestore(&cs->lock, flags);
1696 gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
1697 } else {
1698 /* Send command to modem if not NULL... */
1699 if (p_command/*rep->command*/) {
1700 if (atomic_read(&cs->connected))
1701 send_command(cs, p_command,
1702 sendcid, cs->dle,
1703 GFP_ATOMIC);
1704 else
1705 gigaset_add_event(cs, at_state,
1706 RSP_NODEV,
1707 NULL, 0, NULL);
1708 }
1709
1710 spin_lock_irqsave(&cs->lock, flags);
1711 if (!rep->timeout) {
1712 at_state->timer_expires = 0;
1713 at_state->timer_active = 0;
1714 } else if (rep->timeout > 0) { /* new timeout */
1715 at_state->timer_expires = rep->timeout * 10;
1716 at_state->timer_active = 1;
1717 new_index(&at_state->timer_index,
1718 MAX_TIMER_INDEX);
1719 }
1720 spin_unlock_irqrestore(&cs->lock, flags);
1721 }
1722 }
1723 }
1724
1725 static void schedule_sequence(struct cardstate *cs,
1726 struct at_state_t *at_state, int sequence)
1727 {
1728 cs->cur_at_seq = sequence;
1729 gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1730 }
1731
1732 static void process_command_flags(struct cardstate *cs)
1733 {
1734 struct at_state_t *at_state = NULL;
1735 struct bc_state *bcs;
1736 int i;
1737 int sequence;
1738
1739 IFNULLRET(cs);
1740
1741 atomic_set(&cs->commands_pending, 0);
1742
1743 if (cs->cur_at_seq) {
1744 dbg(DEBUG_CMD, "not searching scheduled commands: busy");
1745 return;
1746 }
1747
1748 dbg(DEBUG_CMD, "searching scheduled commands");
1749
1750 sequence = SEQ_NONE;
1751
1752 /* clear pending_commands and hangup channels on shutdown */
1753 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1754 cs->at_state.pending_commands &= ~PC_CIDMODE;
1755 for (i = 0; i < cs->channels; ++i) {
1756 bcs = cs->bcs + i;
1757 at_state = &bcs->at_state;
1758 at_state->pending_commands &=
1759 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1760 if (at_state->cid > 0)
1761 at_state->pending_commands |= PC_HUP;
1762 if (at_state->pending_commands & PC_CID) {
1763 at_state->pending_commands |= PC_NOCID;
1764 at_state->pending_commands &= ~PC_CID;
1765 }
1766 }
1767 }
1768
1769 /* clear pending_commands and hangup channels on reset */
1770 if (cs->at_state.pending_commands & PC_INIT) {
1771 cs->at_state.pending_commands &= ~PC_CIDMODE;
1772 for (i = 0; i < cs->channels; ++i) {
1773 bcs = cs->bcs + i;
1774 at_state = &bcs->at_state;
1775 at_state->pending_commands &=
1776 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1777 if (at_state->cid > 0)
1778 at_state->pending_commands |= PC_HUP;
1779 if (atomic_read(&cs->mstate) == MS_RECOVER) {
1780 if (at_state->pending_commands & PC_CID) {
1781 at_state->pending_commands |= PC_NOCID;
1782 at_state->pending_commands &= ~PC_CID;
1783 }
1784 }
1785 }
1786 }
1787
1788 /* only switch back to unimodem mode, if no commands are pending and no channels are up */
1789 if (cs->at_state.pending_commands == PC_UMMODE
1790 && !atomic_read(&cs->cidmode)
1791 && list_empty(&cs->temp_at_states)
1792 && atomic_read(&cs->mode) == M_CID) {
1793 sequence = SEQ_UMMODE;
1794 at_state = &cs->at_state;
1795 for (i = 0; i < cs->channels; ++i) {
1796 bcs = cs->bcs + i;
1797 if (bcs->at_state.pending_commands ||
1798 bcs->at_state.cid > 0) {
1799 sequence = SEQ_NONE;
1800 break;
1801 }
1802 }
1803 }
1804 cs->at_state.pending_commands &= ~PC_UMMODE;
1805 if (sequence != SEQ_NONE) {
1806 schedule_sequence(cs, at_state, sequence);
1807 return;
1808 }
1809
1810 for (i = 0; i < cs->channels; ++i) {
1811 bcs = cs->bcs + i;
1812 if (bcs->at_state.pending_commands & PC_HUP) {
1813 bcs->at_state.pending_commands &= ~PC_HUP;
1814 if (bcs->at_state.pending_commands & PC_CID) {
1815 /* not yet dialing: PC_NOCID is sufficient */
1816 bcs->at_state.pending_commands |= PC_NOCID;
1817 bcs->at_state.pending_commands &= ~PC_CID;
1818 } else {
1819 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1820 return;
1821 }
1822 }
1823 if (bcs->at_state.pending_commands & PC_NOCID) {
1824 bcs->at_state.pending_commands &= ~PC_NOCID;
1825 cs->curchannel = bcs->channel;
1826 schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1827 return;
1828 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1829 bcs->at_state.pending_commands &= ~PC_DLE0;
1830 cs->curchannel = bcs->channel;
1831 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1832 return;
1833 }
1834 }
1835
1836 list_for_each_entry(at_state, &cs->temp_at_states, list)
1837 if (at_state->pending_commands & PC_HUP) {
1838 at_state->pending_commands &= ~PC_HUP;
1839 schedule_sequence(cs, at_state, SEQ_HUP);
1840 return;
1841 }
1842
1843 if (cs->at_state.pending_commands & PC_INIT) {
1844 cs->at_state.pending_commands &= ~PC_INIT;
1845 cs->dle = 0; //FIXME
1846 cs->inbuf->inputstate = INS_command;
1847 //FIXME reset card state (or -> LOCK0)?
1848 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1849 return;
1850 }
1851 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1852 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1853 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1854 return;
1855 }
1856 if (cs->at_state.pending_commands & PC_CIDMODE) {
1857 cs->at_state.pending_commands &= ~PC_CIDMODE;
1858 if (atomic_read(&cs->mode) == M_UNIMODEM) {
1859 cs->retry_count = 1;
1860 schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1861 return;
1862 }
1863 }
1864
1865 for (i = 0; i < cs->channels; ++i) {
1866 bcs = cs->bcs + i;
1867 if (bcs->at_state.pending_commands & PC_DLE1) {
1868 bcs->at_state.pending_commands &= ~PC_DLE1;
1869 cs->curchannel = bcs->channel;
1870 schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1871 return;
1872 }
1873 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1874 bcs->at_state.pending_commands &= ~PC_ACCEPT;
1875 schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1876 return;
1877 }
1878 if (bcs->at_state.pending_commands & PC_DIAL) {
1879 bcs->at_state.pending_commands &= ~PC_DIAL;
1880 schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1881 return;
1882 }
1883 if (bcs->at_state.pending_commands & PC_CID) {
1884 switch (atomic_read(&cs->mode)) {
1885 case M_UNIMODEM:
1886 cs->at_state.pending_commands |= PC_CIDMODE;
1887 dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1888 atomic_set(&cs->commands_pending, 1);
1889 return;
1890 #ifdef GIG_MAYINITONDIAL
1891 case M_UNKNOWN:
1892 schedule_init(cs, MS_INIT);
1893 return;
1894 #endif
1895 }
1896 bcs->at_state.pending_commands &= ~PC_CID;
1897 cs->curchannel = bcs->channel;
1898 #ifdef GIG_RETRYCID
1899 cs->retry_count = 2;
1900 #else
1901 cs->retry_count = 1;
1902 #endif
1903 schedule_sequence(cs, &cs->at_state, SEQ_CID);
1904 return;
1905 }
1906 }
1907 }
1908
1909 static void process_events(struct cardstate *cs)
1910 {
1911 struct event_t *ev;
1912 unsigned head, tail;
1913 int i;
1914 int check_flags = 0;
1915 int was_busy;
1916
1917 /* no locking needed (only one reader) */
1918 head = atomic_read(&cs->ev_head);
1919
1920 for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1921 tail = atomic_read(&cs->ev_tail);
1922 if (tail == head) {
1923 if (!check_flags && !atomic_read(&cs->commands_pending))
1924 break;
1925 check_flags = 0;
1926 process_command_flags(cs);
1927 tail = atomic_read(&cs->ev_tail);
1928 if (tail == head) {
1929 if (!atomic_read(&cs->commands_pending))
1930 break;
1931 continue;
1932 }
1933 }
1934
1935 ev = cs->events + head;
1936 was_busy = cs->cur_at_seq != SEQ_NONE;
1937 process_event(cs, ev);
1938 kfree(ev->ptr);
1939 ev->ptr = NULL;
1940 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1941 check_flags = 1;
1942
1943 head = (head + 1) % MAX_EVENTS;
1944 atomic_set(&cs->ev_head, head);
1945 }
1946
1947 if (i == 2 * MAX_EVENTS) {
1948 err("infinite loop in process_events; aborting.");
1949 }
1950 }
1951
1952 /* tasklet scheduled on any event received from the Gigaset device
1953 * parameter:
1954 * data ISDN controller state structure
1955 */
1956 void gigaset_handle_event(unsigned long data)
1957 {
1958 struct cardstate *cs = (struct cardstate *) data;
1959
1960 IFNULLRET(cs);
1961 IFNULLRET(cs->inbuf);
1962
1963 /* handle incoming data on control/common channel */
1964 if (atomic_read(&cs->inbuf->head) != atomic_read(&cs->inbuf->tail)) {
1965 dbg(DEBUG_INTR, "processing new data");
1966 cs->ops->handle_input(cs->inbuf);
1967 }
1968
1969 process_events(cs);
1970 }
Support for the Chinese Samsung S3C2440 based development boards