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x86/amd-iommu: Add per IOMMU reference counting
[linux/fpc-iii.git] / drivers / isdn / gigaset / ev-layer.c
blobcc768caa38f54b86f48ec92310ed93e3b1fcf998
1 /*
2 * Stuff used by all variants of the driver
3 *
4 * Copyright (c) 2001 by Stefan Eilers,
5 * Hansjoerg Lipp <hjlipp@web.de>,
6 * Tilman Schmidt <tilman@imap.cc>.
7 *
8 * =====================================================================
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
13 * =====================================================================
14 */
15
16 #include "gigaset.h"
17
18 /* ========================================================== */
19 /* bit masks for pending commands */
20 #define PC_DIAL 0x001
21 #define PC_HUP 0x002
22 #define PC_INIT 0x004
23 #define PC_DLE0 0x008
24 #define PC_DLE1 0x010
25 #define PC_SHUTDOWN 0x020
26 #define PC_ACCEPT 0x040
27 #define PC_CID 0x080
28 #define PC_NOCID 0x100
29 #define PC_CIDMODE 0x200
30 #define PC_UMMODE 0x400
31
32 /* types of modem responses */
33 #define RT_NOTHING 0
34 #define RT_ZSAU 1
35 #define RT_RING 2
36 #define RT_NUMBER 3
37 #define RT_STRING 4
38 #define RT_HEX 5
39 #define RT_ZCAU 6
40
41 /* Possible ASCII responses */
42 #define RSP_OK 0
43 //#define RSP_BUSY 1
44 //#define RSP_CONNECT 2
45 #define RSP_ZGCI 3
46 #define RSP_RING 4
47 #define RSP_ZAOC 5
48 #define RSP_ZCSTR 6
49 #define RSP_ZCFGT 7
50 #define RSP_ZCFG 8
51 #define RSP_ZCCR 9
52 #define RSP_EMPTY 10
53 #define RSP_ZLOG 11
54 #define RSP_ZCAU 12
55 #define RSP_ZMWI 13
56 #define RSP_ZABINFO 14
57 #define RSP_ZSMLSTCHG 15
58 #define RSP_VAR 100
59 #define RSP_ZSAU (RSP_VAR + VAR_ZSAU)
60 #define RSP_ZDLE (RSP_VAR + VAR_ZDLE)
61 #define RSP_ZVLS (RSP_VAR + VAR_ZVLS)
62 #define RSP_ZCTP (RSP_VAR + VAR_ZCTP)
63 #define RSP_STR (RSP_VAR + VAR_NUM)
64 #define RSP_NMBR (RSP_STR + STR_NMBR)
65 #define RSP_ZCPN (RSP_STR + STR_ZCPN)
66 #define RSP_ZCON (RSP_STR + STR_ZCON)
67 #define RSP_ZBC (RSP_STR + STR_ZBC)
68 #define RSP_ZHLC (RSP_STR + STR_ZHLC)
69 #define RSP_ERROR -1 /* ERROR */
70 #define RSP_WRONG_CID -2 /* unknown cid in cmd */
71 //#define RSP_EMPTY -3
72 #define RSP_UNKNOWN -4 /* unknown response */
73 #define RSP_FAIL -5 /* internal error */
74 #define RSP_INVAL -6 /* invalid response */
75
76 #define RSP_NONE -19
77 #define RSP_STRING -20
78 #define RSP_NULL -21
79 //#define RSP_RETRYFAIL -22
80 //#define RSP_RETRY -23
81 //#define RSP_SKIP -24
82 #define RSP_INIT -27
83 #define RSP_ANY -26
84 #define RSP_LAST -28
85 #define RSP_NODEV -9
86
87 /* actions for process_response */
88 #define ACT_NOTHING 0
89 #define ACT_SETDLE1 1
90 #define ACT_SETDLE0 2
91 #define ACT_FAILINIT 3
92 #define ACT_HUPMODEM 4
93 #define ACT_CONFIGMODE 5
94 #define ACT_INIT 6
95 #define ACT_DLE0 7
96 #define ACT_DLE1 8
97 #define ACT_FAILDLE0 9
98 #define ACT_FAILDLE1 10
99 #define ACT_RING 11
100 #define ACT_CID 12
101 #define ACT_FAILCID 13
102 #define ACT_SDOWN 14
103 #define ACT_FAILSDOWN 15
104 #define ACT_DEBUG 16
105 #define ACT_WARN 17
106 #define ACT_DIALING 18
107 #define ACT_ABORTDIAL 19
108 #define ACT_DISCONNECT 20
109 #define ACT_CONNECT 21
110 #define ACT_REMOTEREJECT 22
111 #define ACT_CONNTIMEOUT 23
112 #define ACT_REMOTEHUP 24
113 #define ACT_ABORTHUP 25
114 #define ACT_ICALL 26
115 #define ACT_ACCEPTED 27
116 #define ACT_ABORTACCEPT 28
117 #define ACT_TIMEOUT 29
118 #define ACT_GETSTRING 30
119 #define ACT_SETVER 31
120 #define ACT_FAILVER 32
121 #define ACT_GOTVER 33
122 #define ACT_TEST 34
123 #define ACT_ERROR 35
124 #define ACT_ABORTCID 36
125 #define ACT_ZCAU 37
126 #define ACT_NOTIFY_BC_DOWN 38
127 #define ACT_NOTIFY_BC_UP 39
128 #define ACT_DIAL 40
129 #define ACT_ACCEPT 41
130 #define ACT_PROTO_L2 42
131 #define ACT_HUP 43
132 #define ACT_IF_LOCK 44
133 #define ACT_START 45
134 #define ACT_STOP 46
135 #define ACT_FAKEDLE0 47
136 #define ACT_FAKEHUP 48
137 #define ACT_FAKESDOWN 49
138 #define ACT_SHUTDOWN 50
139 #define ACT_PROC_CIDMODE 51
140 #define ACT_UMODESET 52
141 #define ACT_FAILUMODE 53
142 #define ACT_CMODESET 54
143 #define ACT_FAILCMODE 55
144 #define ACT_IF_VER 56
145 #define ACT_CMD 100
146
147 /* at command sequences */
148 #define SEQ_NONE 0
149 #define SEQ_INIT 100
150 #define SEQ_DLE0 200
151 #define SEQ_DLE1 250
152 #define SEQ_CID 300
153 #define SEQ_NOCID 350
154 #define SEQ_HUP 400
155 #define SEQ_DIAL 600
156 #define SEQ_ACCEPT 720
157 #define SEQ_SHUTDOWN 500
158 #define SEQ_CIDMODE 10
159 #define SEQ_UMMODE 11
160
161
162 // 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid), 400: hup, 500: reset, 600: dial, 700: ring
163 struct reply_t gigaset_tab_nocid[] =
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
207 /* leave dle mode */
208 {RSP_INIT, 0, 0,SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"},
209 {RSP_OK, 201,201, -1, 202,-1},
210 {RSP_ZDLE, 202,202, 0, 0, 0, {ACT_DLE0}},
211 {RSP_NODEV, 200,249, -1, 0, 0, {ACT_FAKEDLE0}},
212 {RSP_ERROR, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
213 {EV_TIMEOUT, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
214
215 /* enter dle mode */
216 {RSP_INIT, 0, 0,SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"},
217 {RSP_OK, 251,251, -1, 252,-1},
218 {RSP_ZDLE, 252,252, 1, 0, 0, {ACT_DLE1}},
219 {RSP_ERROR, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
220 {EV_TIMEOUT, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
221
222 /* incoming call */
223 {RSP_RING, -1, -1, -1, -1,-1, {ACT_RING}},
224
225 /* get cid */
226 //{RSP_INIT, 0, 0,300, 901, 0, {ACT_TEST}},
227 //{RSP_ERROR, 901,901, -1, 0, 0, {ACT_FAILCID}},
228 //{RSP_OK, 901,901, -1, 301, 5, {0}, "^SGCI?\r"},
229
230 {RSP_INIT, 0, 0,SEQ_CID, 301, 5, {0}, "^SGCI?\r"},
231 {RSP_OK, 301,301, -1, 302,-1},
232 {RSP_ZGCI, 302,302, -1, 0, 0, {ACT_CID}},
233 {RSP_ERROR, 301,349, -1, 0, 0, {ACT_FAILCID}},
234 {EV_TIMEOUT, 301,349, -1, 0, 0, {ACT_FAILCID}},
235
236 /* enter cid mode */
237 {RSP_INIT, 0, 0,SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"},
238 {RSP_OK, 150,150, -1, 0, 0, {ACT_CMODESET}},
239 {RSP_ERROR, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
240 {EV_TIMEOUT, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
241
242 /* leave cid mode */
243 //{RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "^SGCI=0\r"},
244 {RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "Z\r"},
245 {RSP_OK, 160,160, -1, 0, 0, {ACT_UMODESET}},
246 {RSP_ERROR, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
247 {EV_TIMEOUT, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
248
249 /* abort getting cid */
250 {RSP_INIT, 0, 0,SEQ_NOCID, 0, 0, {ACT_ABORTCID}},
251
252 /* reset */
253 {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"},
254 {RSP_OK, 504,504, -1, 0, 0, {ACT_SDOWN}},
255 {RSP_ERROR, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
256 {EV_TIMEOUT, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
257 {RSP_NODEV, 501,599, -1, 0, 0, {ACT_FAKESDOWN}},
258
259 {EV_PROC_CIDMODE,-1, -1, -1, -1,-1, {ACT_PROC_CIDMODE}}, //FIXME
260 {EV_IF_LOCK, -1, -1, -1, -1,-1, {ACT_IF_LOCK}}, //FIXME
261 {EV_IF_VER, -1, -1, -1, -1,-1, {ACT_IF_VER}}, //FIXME
262 {EV_START, -1, -1, -1, -1,-1, {ACT_START}}, //FIXME
263 {EV_STOP, -1, -1, -1, -1,-1, {ACT_STOP}}, //FIXME
264 {EV_SHUTDOWN, -1, -1, -1, -1,-1, {ACT_SHUTDOWN}}, //FIXME
265
266 /* misc. */
267 {RSP_ERROR, -1, -1, -1, -1, -1, {ACT_ERROR} },
268 {RSP_EMPTY, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
269 {RSP_ZCFGT, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
270 {RSP_ZCFG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
271 {RSP_ZLOG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
272 {RSP_ZMWI, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
273 {RSP_ZABINFO, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
274 {RSP_ZSMLSTCHG,-1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
275
276 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
277 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
278 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
279 {RSP_LAST}
280 };
281
282 // 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring, 400: hup, 750: accepted icall
283 struct reply_t gigaset_tab_cid[] =
284 {
285 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
286
287 /* dial */
288 {EV_DIAL, -1, -1, -1, -1,-1, {ACT_DIAL}}, //FIXME
289 {RSP_INIT, 0, 0,SEQ_DIAL, 601, 5, {ACT_CMD+AT_BC}},
290 {RSP_OK, 601,601, -1, 602, 5, {ACT_CMD+AT_HLC}},
291 {RSP_NULL, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
292 {RSP_OK, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
293 {RSP_OK, 603,603, -1, 604, 5, {ACT_CMD+AT_TYPE}},
294 {RSP_OK, 604,604, -1, 605, 5, {ACT_CMD+AT_MSN}},
295 {RSP_OK, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
296 {RSP_NULL, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
297 {RSP_OK, 606,606, -1, 607, 5, {0}, "+VLS=17\r"},
298 {RSP_OK, 607,607, -1, 608,-1},
299 {RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 609, 5, {ACT_CMD+AT_DIAL}},
300 {RSP_OK, 609,609, -1, 650, 0, {ACT_DIALING}},
301
302 {RSP_ERROR, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
303 {EV_TIMEOUT, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
304
305 /* optional dialing responses */
306 {EV_BC_OPEN, 650,650, -1, 651,-1},
307 {RSP_ZVLS, 608,651, 17, -1,-1, {ACT_DEBUG}},
308 {RSP_ZCTP, 609,651, -1, -1,-1, {ACT_DEBUG}},
309 {RSP_ZCPN, 609,651, -1, -1,-1, {ACT_DEBUG}},
310 {RSP_ZSAU, 650,651,ZSAU_CALL_DELIVERED, -1,-1, {ACT_DEBUG}},
311
312 /* connect */
313 {RSP_ZSAU, 650,650,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}},
314 {RSP_ZSAU, 651,651,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT,
315 ACT_NOTIFY_BC_UP}},
316 {RSP_ZSAU, 750,750,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}},
317 {RSP_ZSAU, 751,751,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT,
318 ACT_NOTIFY_BC_UP}},
319 {EV_BC_OPEN, 800,800, -1, 800,-1, {ACT_NOTIFY_BC_UP}},
320
321 /* remote hangup */
322 {RSP_ZSAU, 650,651,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT}},
323 {RSP_ZSAU, 750,751,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
324 {RSP_ZSAU, 800,800,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
325
326 /* hangup */
327 {EV_HUP, -1, -1, -1, -1,-1, {ACT_HUP}}, //FIXME
328 {RSP_INIT, -1, -1,SEQ_HUP, 401, 5, {0}, "+VLS=0\r"}, /* hang up */ //-1,-1?
329 {RSP_OK, 401,401, -1, 402, 5},
330 {RSP_ZVLS, 402,402, 0, 403, 5},
331 {RSP_ZSAU, 403, 403, ZSAU_DISCONNECT_REQ, -1, -1, {ACT_DEBUG} },
332 {RSP_ZSAU, 403, 403, ZSAU_NULL, 0, 0, {ACT_DISCONNECT} },
333 {RSP_NODEV, 401, 403, -1, 0, 0, {ACT_FAKEHUP} },
334 {RSP_ERROR, 401,401, -1, 0, 0, {ACT_ABORTHUP}},
335 {EV_TIMEOUT, 401,403, -1, 0, 0, {ACT_ABORTHUP}},
336
337 {EV_BC_CLOSED, 0, 0, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME new constate + timeout
338
339 /* ring */
340 {RSP_ZBC, 700,700, -1, -1,-1, {0}},
341 {RSP_ZHLC, 700,700, -1, -1,-1, {0}},
342 {RSP_NMBR, 700,700, -1, -1,-1, {0}},
343 {RSP_ZCPN, 700,700, -1, -1,-1, {0}},
344 {RSP_ZCTP, 700,700, -1, -1,-1, {0}},
345 {EV_TIMEOUT, 700,700, -1, 720,720, {ACT_ICALL}},
346 {EV_BC_CLOSED,720,720, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}},
347
348 /*accept icall*/
349 {EV_ACCEPT, -1, -1, -1, -1,-1, {ACT_ACCEPT}}, //FIXME
350 {RSP_INIT, 720,720,SEQ_ACCEPT, 721, 5, {ACT_CMD+AT_PROTO}},
351 {RSP_OK, 721,721, -1, 722, 5, {ACT_CMD+AT_ISO}},
352 {RSP_OK, 722,722, -1, 723, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
353 {RSP_OK, 723,723, -1, 724, 5, {0}},
354 {RSP_ZVLS, 724,724, 17, 750,50, {ACT_ACCEPTED}},
355 {RSP_ERROR, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
356 {EV_TIMEOUT, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
357 {RSP_ZSAU, 700,729,ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT}},
358 {RSP_ZSAU, 700,729,ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT}},
359 {RSP_ZSAU, 700,729,ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT}},
360
361 {EV_BC_OPEN, 750,750, -1, 751,-1},
362 {EV_TIMEOUT, 750,751, -1, 0, 0, {ACT_CONNTIMEOUT}},
363
364 /* B channel closed (general case) */
365 {EV_BC_CLOSED, -1, -1, -1, -1,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME
366
367 /* misc. */
368 {EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME
369
370 {RSP_ZCON, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
371 {RSP_ZCCR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
372 {RSP_ZAOC, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
373 {RSP_ZCSTR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
374
375 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
376 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
377 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
378 {RSP_LAST}
379 };
380
381
382 static const struct resp_type_t resp_type[] =
383 {
384 /*{"", RSP_EMPTY, RT_NOTHING},*/
385 {"OK", RSP_OK, RT_NOTHING},
386 {"ERROR", RSP_ERROR, RT_NOTHING},
387 {"ZSAU", RSP_ZSAU, RT_ZSAU},
388 {"ZCAU", RSP_ZCAU, RT_ZCAU},
389 {"RING", RSP_RING, RT_RING},
390 {"ZGCI", RSP_ZGCI, RT_NUMBER},
391 {"ZVLS", RSP_ZVLS, RT_NUMBER},
392 {"ZCTP", RSP_ZCTP, RT_NUMBER},
393 {"ZDLE", RSP_ZDLE, RT_NUMBER},
394 {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
395 {"ZCCR", RSP_ZCCR, RT_NUMBER},
396 {"ZMWI", RSP_ZMWI, RT_NUMBER},
397 {"ZHLC", RSP_ZHLC, RT_STRING},
398 {"ZBC", RSP_ZBC, RT_STRING},
399 {"NMBR", RSP_NMBR, RT_STRING},
400 {"ZCPN", RSP_ZCPN, RT_STRING},
401 {"ZCON", RSP_ZCON, RT_STRING},
402 {"ZAOC", RSP_ZAOC, RT_STRING},
403 {"ZCSTR", RSP_ZCSTR, RT_STRING},
404 {"ZCFG", RSP_ZCFG, RT_HEX},
405 {"ZLOG", RSP_ZLOG, RT_NOTHING},
406 {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
407 {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
408 {NULL,0,0}
409 };
410
411 /*
412 * Get integer from char-pointer
413 */
414 static int isdn_getnum(char *p)
415 {
416 int v = -1;
417
418 gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
419
420 while (*p >= '0' && *p <= '9')
421 v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
422 if (*p)
423 v = -1; /* invalid Character */
424 return v;
425 }
426
427 /*
428 * Get integer from char-pointer
429 */
430 static int isdn_gethex(char *p)
431 {
432 int v = 0;
433 int c;
434
435 gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
436
437 if (!*p)
438 return -1;
439
440 do {
441 if (v > (INT_MAX - 15) / 16)
442 return -1;
443 c = *p;
444 if (c >= '0' && c <= '9')
445 c -= '0';
446 else if (c >= 'a' && c <= 'f')
447 c -= 'a' - 10;
448 else if (c >= 'A' && c <= 'F')
449 c -= 'A' - 10;
450 else
451 return -1;
452 v = v * 16 + c;
453 } while (*++p);
454
455 return v;
456 }
457
458 /* retrieve CID from parsed response
459 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
460 */
461 static int cid_of_response(char *s)
462 {
463 int cid;
464
465 if (s[-1] != ';')
466 return 0; /* no CID separator */
467 cid = isdn_getnum(s);
468 if (cid < 0)
469 return 0; /* CID not numeric */
470 if (cid < 1 || cid > 65535)
471 return -1; /* CID out of range */
472 return cid;
473 //FIXME is ;<digit>+ at end of non-CID response really impossible?
474 }
475
476 /**
477 * gigaset_handle_modem_response() - process received modem response
478 * @cs: device descriptor structure.
479 *
480 * Called by asyncdata/isocdata if a block of data received from the
481 * device must be processed as a modem command response. The data is
482 * already in the cs structure.
483 */
484 void gigaset_handle_modem_response(struct cardstate *cs)
485 {
486 unsigned char *argv[MAX_REC_PARAMS + 1];
487 int params;
488 int i, j;
489 const struct resp_type_t *rt;
490 int curarg;
491 unsigned long flags;
492 unsigned next, tail, head;
493 struct event_t *event;
494 int resp_code;
495 int param_type;
496 int abort;
497 size_t len;
498 int cid;
499 int rawstring;
500
501 len = cs->cbytes;
502 if (!len) {
503 /* ignore additional LFs/CRs (M10x config mode or cx100) */
504 gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
505 return;
506 }
507 cs->respdata[len] = 0;
508 gig_dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
509 argv[0] = cs->respdata;
510 params = 1;
511 if (cs->at_state.getstring) {
512 /* getstring only allowed without cid at the moment */
513 cs->at_state.getstring = 0;
514 rawstring = 1;
515 cid = 0;
516 } else {
517 /* parse line */
518 for (i = 0; i < len; i++)
519 switch (cs->respdata[i]) {
520 case ';':
521 case ',':
522 case '=':
523 if (params > MAX_REC_PARAMS) {
524 dev_warn(cs->dev,
525 "too many parameters in response\n");
526 /* need last parameter (might be CID) */
527 params--;
528 }
529 argv[params++] = cs->respdata + i + 1;
530 }
531
532 rawstring = 0;
533 cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
534 if (cid < 0) {
535 gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
536 NULL, 0, NULL);
537 return;
538 }
539
540 for (j = 1; j < params; ++j)
541 argv[j][-1] = 0;
542
543 gig_dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
544 if (cid) {
545 --params;
546 gig_dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
547 }
548 gig_dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
549 for (j = 1; j < params; j++)
550 gig_dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
551 }
552
553 spin_lock_irqsave(&cs->ev_lock, flags);
554 head = cs->ev_head;
555 tail = cs->ev_tail;
556
557 abort = 1;
558 curarg = 0;
559 while (curarg < params) {
560 next = (tail + 1) % MAX_EVENTS;
561 if (unlikely(next == head)) {
562 dev_err(cs->dev, "event queue full\n");
563 break;
564 }
565
566 event = cs->events + tail;
567 event->at_state = NULL;
568 event->cid = cid;
569 event->ptr = NULL;
570 event->arg = NULL;
571 tail = next;
572
573 if (rawstring) {
574 resp_code = RSP_STRING;
575 param_type = RT_STRING;
576 } else {
577 for (rt = resp_type; rt->response; ++rt)
578 if (!strcmp(argv[curarg], rt->response))
579 break;
580
581 if (!rt->response) {
582 event->type = RSP_UNKNOWN;
583 dev_warn(cs->dev,
584 "unknown modem response: %s\n",
585 argv[curarg]);
586 break;
587 }
588
589 resp_code = rt->resp_code;
590 param_type = rt->type;
591 ++curarg;
592 }
593
594 event->type = resp_code;
595
596 switch (param_type) {
597 case RT_NOTHING:
598 break;
599 case RT_RING:
600 if (!cid) {
601 dev_err(cs->dev,
602 "received RING without CID!\n");
603 event->type = RSP_INVAL;
604 abort = 1;
605 } else {
606 event->cid = 0;
607 event->parameter = cid;
608 abort = 0;
609 }
610 break;
611 case RT_ZSAU:
612 if (curarg >= params) {
613 event->parameter = ZSAU_NONE;
614 break;
615 }
616 if (!strcmp(argv[curarg], "OUTGOING_CALL_PROCEEDING"))
617 event->parameter = ZSAU_OUTGOING_CALL_PROCEEDING;
618 else if (!strcmp(argv[curarg], "CALL_DELIVERED"))
619 event->parameter = ZSAU_CALL_DELIVERED;
620 else if (!strcmp(argv[curarg], "ACTIVE"))
621 event->parameter = ZSAU_ACTIVE;
622 else if (!strcmp(argv[curarg], "DISCONNECT_IND"))
623 event->parameter = ZSAU_DISCONNECT_IND;
624 else if (!strcmp(argv[curarg], "NULL"))
625 event->parameter = ZSAU_NULL;
626 else if (!strcmp(argv[curarg], "DISCONNECT_REQ"))
627 event->parameter = ZSAU_DISCONNECT_REQ;
628 else {
629 event->parameter = ZSAU_UNKNOWN;
630 dev_warn(cs->dev,
631 "%s: unknown parameter %s after ZSAU\n",
632 __func__, argv[curarg]);
633 }
634 ++curarg;
635 break;
636 case RT_STRING:
637 if (curarg < params) {
638 event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
639 if (!event->ptr)
640 dev_err(cs->dev, "out of memory\n");
641 ++curarg;
642 }
643 gig_dbg(DEBUG_CMD, "string==%s",
644 event->ptr ? (char *) event->ptr : "NULL");
645 break;
646 case RT_ZCAU:
647 event->parameter = -1;
648 if (curarg + 1 < params) {
649 i = isdn_gethex(argv[curarg]);
650 j = isdn_gethex(argv[curarg + 1]);
651 if (i >= 0 && i < 256 && j >= 0 && j < 256)
652 event->parameter = (unsigned) i << 8
653 | j;
654 curarg += 2;
655 } else
656 curarg = params - 1;
657 break;
658 case RT_NUMBER:
659 case RT_HEX:
660 if (curarg < params) {
661 if (param_type == RT_HEX)
662 event->parameter =
663 isdn_gethex(argv[curarg]);
664 else
665 event->parameter =
666 isdn_getnum(argv[curarg]);
667 ++curarg;
668 } else
669 event->parameter = -1;
670 gig_dbg(DEBUG_CMD, "parameter==%d", event->parameter);
671 break;
672 }
673
674 if (resp_code == RSP_ZDLE)
675 cs->dle = event->parameter;
676
677 if (abort)
678 break;
679 }
680
681 cs->ev_tail = tail;
682 spin_unlock_irqrestore(&cs->ev_lock, flags);
683
684 if (curarg != params)
685 gig_dbg(DEBUG_ANY,
686 "invalid number of processed parameters: %d/%d",
687 curarg, params);
688 }
689 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
690
691 /* disconnect
692 * process closing of connection associated with given AT state structure
693 */
694 static void disconnect(struct at_state_t **at_state_p)
695 {
696 unsigned long flags;
697 struct bc_state *bcs = (*at_state_p)->bcs;
698 struct cardstate *cs = (*at_state_p)->cs;
699
700 spin_lock_irqsave(&cs->lock, flags);
701 ++(*at_state_p)->seq_index;
702
703 /* revert to selected idle mode */
704 if (!cs->cidmode) {
705 cs->at_state.pending_commands |= PC_UMMODE;
706 cs->commands_pending = 1;
707 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
708 }
709 spin_unlock_irqrestore(&cs->lock, flags);
710
711 if (bcs) {
712 /* B channel assigned: invoke hardware specific handler */
713 cs->ops->close_bchannel(bcs);
714 /* notify LL */
715 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
716 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
717 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
718 }
719 } else {
720 /* no B channel assigned: just deallocate */
721 spin_lock_irqsave(&cs->lock, flags);
722 list_del(&(*at_state_p)->list);
723 kfree(*at_state_p);
724 *at_state_p = NULL;
725 spin_unlock_irqrestore(&cs->lock, flags);
726 }
727 }
728
729 /* get_free_channel
730 * get a free AT state structure: either one of those associated with the
731 * B channels of the Gigaset device, or if none of those is available,
732 * a newly allocated one with bcs=NULL
733 * The structure should be freed by calling disconnect() after use.
734 */
735 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
736 int cid)
737 /* cids: >0: siemens-cid
738 0: without cid
739 -1: no cid assigned yet
740 */
741 {
742 unsigned long flags;
743 int i;
744 struct at_state_t *ret;
745
746 for (i = 0; i < cs->channels; ++i)
747 if (gigaset_get_channel(cs->bcs + i)) {
748 ret = &cs->bcs[i].at_state;
749 ret->cid = cid;
750 return ret;
751 }
752
753 spin_lock_irqsave(&cs->lock, flags);
754 ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
755 if (ret) {
756 gigaset_at_init(ret, NULL, cs, cid);
757 list_add(&ret->list, &cs->temp_at_states);
758 }
759 spin_unlock_irqrestore(&cs->lock, flags);
760 return ret;
761 }
762
763 static void init_failed(struct cardstate *cs, int mode)
764 {
765 int i;
766 struct at_state_t *at_state;
767
768 cs->at_state.pending_commands &= ~PC_INIT;
769 cs->mode = mode;
770 cs->mstate = MS_UNINITIALIZED;
771 gigaset_free_channels(cs);
772 for (i = 0; i < cs->channels; ++i) {
773 at_state = &cs->bcs[i].at_state;
774 if (at_state->pending_commands & PC_CID) {
775 at_state->pending_commands &= ~PC_CID;
776 at_state->pending_commands |= PC_NOCID;
777 cs->commands_pending = 1;
778 }
779 }
780 }
781
782 static void schedule_init(struct cardstate *cs, int state)
783 {
784 if (cs->at_state.pending_commands & PC_INIT) {
785 gig_dbg(DEBUG_CMD, "not scheduling PC_INIT again");
786 return;
787 }
788 cs->mstate = state;
789 cs->mode = M_UNKNOWN;
790 gigaset_block_channels(cs);
791 cs->at_state.pending_commands |= PC_INIT;
792 cs->commands_pending = 1;
793 gig_dbg(DEBUG_CMD, "Scheduling PC_INIT");
794 }
795
796 /* Add "AT" to a command, add the cid, dle encode it, send the result to the
797 hardware. */
798 static void send_command(struct cardstate *cs, const char *cmd, int cid,
799 int dle, gfp_t kmallocflags)
800 {
801 size_t cmdlen, buflen;
802 char *cmdpos, *cmdbuf, *cmdtail;
803
804 cmdlen = strlen(cmd);
805 buflen = 11 + cmdlen;
806 if (unlikely(buflen <= cmdlen)) {
807 dev_err(cs->dev, "integer overflow in buflen\n");
808 return;
809 }
810
811 cmdbuf = kmalloc(buflen, kmallocflags);
812 if (unlikely(!cmdbuf)) {
813 dev_err(cs->dev, "out of memory\n");
814 return;
815 }
816
817 cmdpos = cmdbuf + 9;
818 cmdtail = cmdpos + cmdlen;
819 memcpy(cmdpos, cmd, cmdlen);
820
821 if (cid > 0 && cid <= 65535) {
822 do {
823 *--cmdpos = '0' + cid % 10;
824 cid /= 10;
825 ++cmdlen;
826 } while (cid);
827 }
828
829 cmdlen += 2;
830 *--cmdpos = 'T';
831 *--cmdpos = 'A';
832
833 if (dle) {
834 cmdlen += 4;
835 *--cmdpos = '(';
836 *--cmdpos = 0x10;
837 *cmdtail++ = 0x10;
838 *cmdtail++ = ')';
839 }
840
841 cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
842 kfree(cmdbuf);
843 }
844
845 static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
846 {
847 struct at_state_t *at_state;
848 int i;
849 unsigned long flags;
850
851 if (cid == 0)
852 return &cs->at_state;
853
854 for (i = 0; i < cs->channels; ++i)
855 if (cid == cs->bcs[i].at_state.cid)
856 return &cs->bcs[i].at_state;
857
858 spin_lock_irqsave(&cs->lock, flags);
859
860 list_for_each_entry(at_state, &cs->temp_at_states, list)
861 if (cid == at_state->cid) {
862 spin_unlock_irqrestore(&cs->lock, flags);
863 return at_state;
864 }
865
866 spin_unlock_irqrestore(&cs->lock, flags);
867
868 return NULL;
869 }
870
871 static void bchannel_down(struct bc_state *bcs)
872 {
873 if (bcs->chstate & CHS_B_UP) {
874 bcs->chstate &= ~CHS_B_UP;
875 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
876 }
877
878 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
879 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
880 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
881 }
882
883 gigaset_free_channel(bcs);
884
885 gigaset_bcs_reinit(bcs);
886 }
887
888 static void bchannel_up(struct bc_state *bcs)
889 {
890 if (bcs->chstate & CHS_B_UP) {
891 dev_notice(bcs->cs->dev, "%s: B channel already up\n",
892 __func__);
893 return;
894 }
895
896 bcs->chstate |= CHS_B_UP;
897 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
898 }
899
900 static void start_dial(struct at_state_t *at_state, void *data, unsigned seq_index)
901 {
902 struct bc_state *bcs = at_state->bcs;
903 struct cardstate *cs = at_state->cs;
904 int retval;
905 unsigned long flags;
906
907 bcs->chstate |= CHS_NOTIFY_LL;
908
909 spin_lock_irqsave(&cs->lock, flags);
910 if (at_state->seq_index != seq_index) {
911 spin_unlock_irqrestore(&cs->lock, flags);
912 goto error;
913 }
914 spin_unlock_irqrestore(&cs->lock, flags);
915
916 retval = gigaset_isdn_setup_dial(at_state, data);
917 if (retval != 0)
918 goto error;
919
920
921 at_state->pending_commands |= PC_CID;
922 gig_dbg(DEBUG_CMD, "Scheduling PC_CID");
923 cs->commands_pending = 1;
924 return;
925
926 error:
927 at_state->pending_commands |= PC_NOCID;
928 gig_dbg(DEBUG_CMD, "Scheduling PC_NOCID");
929 cs->commands_pending = 1;
930 return;
931 }
932
933 static void start_accept(struct at_state_t *at_state)
934 {
935 struct cardstate *cs = at_state->cs;
936 int retval;
937
938 retval = gigaset_isdn_setup_accept(at_state);
939
940 if (retval == 0) {
941 at_state->pending_commands |= PC_ACCEPT;
942 gig_dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
943 cs->commands_pending = 1;
944 } else {
945 /* error reset */
946 at_state->pending_commands |= PC_HUP;
947 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
948 cs->commands_pending = 1;
949 }
950 }
951
952 static void do_start(struct cardstate *cs)
953 {
954 gigaset_free_channels(cs);
955
956 if (cs->mstate != MS_LOCKED)
957 schedule_init(cs, MS_INIT);
958
959 cs->isdn_up = 1;
960 gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
961 // FIXME: not in locked mode
962 // FIXME 2: only after init sequence
963
964 cs->waiting = 0;
965 wake_up(&cs->waitqueue);
966 }
967
968 static void finish_shutdown(struct cardstate *cs)
969 {
970 if (cs->mstate != MS_LOCKED) {
971 cs->mstate = MS_UNINITIALIZED;
972 cs->mode = M_UNKNOWN;
973 }
974
975 /* Tell the LL that the device is not available .. */
976 if (cs->isdn_up) {
977 cs->isdn_up = 0;
978 gigaset_i4l_cmd(cs, ISDN_STAT_STOP);
979 }
980
981 /* The rest is done by cleanup_cs () in user mode. */
982
983 cs->cmd_result = -ENODEV;
984 cs->waiting = 0;
985 wake_up(&cs->waitqueue);
986 }
987
988 static void do_shutdown(struct cardstate *cs)
989 {
990 gigaset_block_channels(cs);
991
992 if (cs->mstate == MS_READY) {
993 cs->mstate = MS_SHUTDOWN;
994 cs->at_state.pending_commands |= PC_SHUTDOWN;
995 cs->commands_pending = 1;
996 gig_dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN");
997 } else
998 finish_shutdown(cs);
999 }
1000
1001 static void do_stop(struct cardstate *cs)
1002 {
1003 unsigned long flags;
1004
1005 spin_lock_irqsave(&cs->lock, flags);
1006 cs->connected = 0;
1007 spin_unlock_irqrestore(&cs->lock, flags);
1008
1009 do_shutdown(cs);
1010 }
1011
1012 /* Entering cid mode or getting a cid failed:
1013 * try to initialize the device and try again.
1014 *
1015 * channel >= 0: getting cid for the channel failed
1016 * channel < 0: entering cid mode failed
1017 *
1018 * returns 0 on failure
1019 */
1020 static int reinit_and_retry(struct cardstate *cs, int channel)
1021 {
1022 int i;
1023
1024 if (--cs->retry_count <= 0)
1025 return 0;
1026
1027 for (i = 0; i < cs->channels; ++i)
1028 if (cs->bcs[i].at_state.cid > 0)
1029 return 0;
1030
1031 if (channel < 0)
1032 dev_warn(cs->dev,
1033 "Could not enter cid mode. Reinit device and try again.\n");
1034 else {
1035 dev_warn(cs->dev,
1036 "Could not get a call id. Reinit device and try again.\n");
1037 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1038 }
1039 schedule_init(cs, MS_INIT);
1040 return 1;
1041 }
1042
1043 static int at_state_invalid(struct cardstate *cs,
1044 struct at_state_t *test_ptr)
1045 {
1046 unsigned long flags;
1047 unsigned channel;
1048 struct at_state_t *at_state;
1049 int retval = 0;
1050
1051 spin_lock_irqsave(&cs->lock, flags);
1052
1053 if (test_ptr == &cs->at_state)
1054 goto exit;
1055
1056 list_for_each_entry(at_state, &cs->temp_at_states, list)
1057 if (at_state == test_ptr)
1058 goto exit;
1059
1060 for (channel = 0; channel < cs->channels; ++channel)
1061 if (&cs->bcs[channel].at_state == test_ptr)
1062 goto exit;
1063
1064 retval = 1;
1065 exit:
1066 spin_unlock_irqrestore(&cs->lock, flags);
1067 return retval;
1068 }
1069
1070 static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1071 struct at_state_t **p_at_state)
1072 {
1073 int retval;
1074 struct at_state_t *at_state = *p_at_state;
1075
1076 retval = gigaset_isdn_icall(at_state);
1077 switch (retval) {
1078 case ICALL_ACCEPT:
1079 break;
1080 default:
1081 dev_err(cs->dev, "internal error: disposition=%d\n", retval);
1082 /* --v-- fall through --v-- */
1083 case ICALL_IGNORE:
1084 case ICALL_REJECT:
1085 /* hang up actively
1086 * Device doc says that would reject the call.
1087 * In fact it doesn't.
1088 */
1089 at_state->pending_commands |= PC_HUP;
1090 cs->commands_pending = 1;
1091 break;
1092 }
1093 }
1094
1095 static int do_lock(struct cardstate *cs)
1096 {
1097 int mode;
1098 int i;
1099
1100 switch (cs->mstate) {
1101 case MS_UNINITIALIZED:
1102 case MS_READY:
1103 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1104 cs->at_state.pending_commands)
1105 return -EBUSY;
1106
1107 for (i = 0; i < cs->channels; ++i)
1108 if (cs->bcs[i].at_state.pending_commands)
1109 return -EBUSY;
1110
1111 if (!gigaset_get_channels(cs))
1112 return -EBUSY;
1113
1114 break;
1115 case MS_LOCKED:
1116 //retval = -EACCES;
1117 break;
1118 default:
1119 return -EBUSY;
1120 }
1121
1122 mode = cs->mode;
1123 cs->mstate = MS_LOCKED;
1124 cs->mode = M_UNKNOWN;
1125
1126 return mode;
1127 }
1128
1129 static int do_unlock(struct cardstate *cs)
1130 {
1131 if (cs->mstate != MS_LOCKED)
1132 return -EINVAL;
1133
1134 cs->mstate = MS_UNINITIALIZED;
1135 cs->mode = M_UNKNOWN;
1136 gigaset_free_channels(cs);
1137 if (cs->connected)
1138 schedule_init(cs, MS_INIT);
1139
1140 return 0;
1141 }
1142
1143 static void do_action(int action, struct cardstate *cs,
1144 struct bc_state *bcs,
1145 struct at_state_t **p_at_state, char **pp_command,
1146 int *p_genresp, int *p_resp_code,
1147 struct event_t *ev)
1148 {
1149 struct at_state_t *at_state = *p_at_state;
1150 struct at_state_t *at_state2;
1151 unsigned long flags;
1152
1153 int channel;
1154
1155 unsigned char *s, *e;
1156 int i;
1157 unsigned long val;
1158
1159 switch (action) {
1160 case ACT_NOTHING:
1161 break;
1162 case ACT_TIMEOUT:
1163 at_state->waiting = 1;
1164 break;
1165 case ACT_INIT:
1166 cs->at_state.pending_commands &= ~PC_INIT;
1167 cs->cur_at_seq = SEQ_NONE;
1168 cs->mode = M_UNIMODEM;
1169 spin_lock_irqsave(&cs->lock, flags);
1170 if (!cs->cidmode) {
1171 spin_unlock_irqrestore(&cs->lock, flags);
1172 gigaset_free_channels(cs);
1173 cs->mstate = MS_READY;
1174 break;
1175 }
1176 spin_unlock_irqrestore(&cs->lock, flags);
1177 cs->at_state.pending_commands |= PC_CIDMODE;
1178 cs->commands_pending = 1;
1179 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1180 break;
1181 case ACT_FAILINIT:
1182 dev_warn(cs->dev, "Could not initialize the device.\n");
1183 cs->dle = 0;
1184 init_failed(cs, M_UNKNOWN);
1185 cs->cur_at_seq = SEQ_NONE;
1186 break;
1187 case ACT_CONFIGMODE:
1188 init_failed(cs, M_CONFIG);
1189 cs->cur_at_seq = SEQ_NONE;
1190 break;
1191 case ACT_SETDLE1:
1192 cs->dle = 1;
1193 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1194 cs->inbuf[0].inputstate &=
1195 ~(INS_command | INS_DLE_command);
1196 break;
1197 case ACT_SETDLE0:
1198 cs->dle = 0;
1199 cs->inbuf[0].inputstate =
1200 (cs->inbuf[0].inputstate & ~INS_DLE_command)
1201 | INS_command;
1202 break;
1203 case ACT_CMODESET:
1204 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1205 gigaset_free_channels(cs);
1206 cs->mstate = MS_READY;
1207 }
1208 cs->mode = M_CID;
1209 cs->cur_at_seq = SEQ_NONE;
1210 break;
1211 case ACT_UMODESET:
1212 cs->mode = M_UNIMODEM;
1213 cs->cur_at_seq = SEQ_NONE;
1214 break;
1215 case ACT_FAILCMODE:
1216 cs->cur_at_seq = SEQ_NONE;
1217 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1218 init_failed(cs, M_UNKNOWN);
1219 break;
1220 }
1221 if (!reinit_and_retry(cs, -1))
1222 schedule_init(cs, MS_RECOVER);
1223 break;
1224 case ACT_FAILUMODE:
1225 cs->cur_at_seq = SEQ_NONE;
1226 schedule_init(cs, MS_RECOVER);
1227 break;
1228 case ACT_HUPMODEM:
1229 /* send "+++" (hangup in unimodem mode) */
1230 if (cs->connected)
1231 cs->ops->write_cmd(cs, "+++", 3, NULL);
1232 break;
1233 case ACT_RING:
1234 /* get fresh AT state structure for new CID */
1235 at_state2 = get_free_channel(cs, ev->parameter);
1236 if (!at_state2) {
1237 dev_warn(cs->dev,
1238 "RING ignored: could not allocate channel structure\n");
1239 break;
1240 }
1241
1242 /* initialize AT state structure
1243 * note that bcs may be NULL if no B channel is free
1244 */
1245 at_state2->ConState = 700;
1246 kfree(at_state2->str_var[STR_NMBR]);
1247 at_state2->str_var[STR_NMBR] = NULL;
1248 kfree(at_state2->str_var[STR_ZCPN]);
1249 at_state2->str_var[STR_ZCPN] = NULL;
1250 kfree(at_state2->str_var[STR_ZBC]);
1251 at_state2->str_var[STR_ZBC] = NULL;
1252 kfree(at_state2->str_var[STR_ZHLC]);
1253 at_state2->str_var[STR_ZHLC] = NULL;
1254 at_state2->int_var[VAR_ZCTP] = -1;
1255
1256 spin_lock_irqsave(&cs->lock, flags);
1257 at_state2->timer_expires = RING_TIMEOUT;
1258 at_state2->timer_active = 1;
1259 spin_unlock_irqrestore(&cs->lock, flags);
1260 break;
1261 case ACT_ICALL:
1262 handle_icall(cs, bcs, p_at_state);
1263 break;
1264 case ACT_FAILSDOWN:
1265 dev_warn(cs->dev, "Could not shut down the device.\n");
1266 /* fall through */
1267 case ACT_FAKESDOWN:
1268 case ACT_SDOWN:
1269 cs->cur_at_seq = SEQ_NONE;
1270 finish_shutdown(cs);
1271 break;
1272 case ACT_CONNECT:
1273 if (cs->onechannel) {
1274 at_state->pending_commands |= PC_DLE1;
1275 cs->commands_pending = 1;
1276 break;
1277 }
1278 bcs->chstate |= CHS_D_UP;
1279 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1280 cs->ops->init_bchannel(bcs);
1281 break;
1282 case ACT_DLE1:
1283 cs->cur_at_seq = SEQ_NONE;
1284 bcs = cs->bcs + cs->curchannel;
1285
1286 bcs->chstate |= CHS_D_UP;
1287 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1288 cs->ops->init_bchannel(bcs);
1289 break;
1290 case ACT_FAKEHUP:
1291 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1292 /* fall through */
1293 case ACT_DISCONNECT:
1294 cs->cur_at_seq = SEQ_NONE;
1295 at_state->cid = -1;
1296 if (bcs && cs->onechannel && cs->dle) {
1297 /* Check for other open channels not needed:
1298 * DLE only used for M10x with one B channel.
1299 */
1300 at_state->pending_commands |= PC_DLE0;
1301 cs->commands_pending = 1;
1302 } else
1303 disconnect(p_at_state);
1304 break;
1305 case ACT_FAKEDLE0:
1306 at_state->int_var[VAR_ZDLE] = 0;
1307 cs->dle = 0;
1308 /* fall through */
1309 case ACT_DLE0:
1310 cs->cur_at_seq = SEQ_NONE;
1311 at_state2 = &cs->bcs[cs->curchannel].at_state;
1312 disconnect(&at_state2);
1313 break;
1314 case ACT_ABORTHUP:
1315 cs->cur_at_seq = SEQ_NONE;
1316 dev_warn(cs->dev, "Could not hang up.\n");
1317 at_state->cid = -1;
1318 if (bcs && cs->onechannel)
1319 at_state->pending_commands |= PC_DLE0;
1320 else
1321 disconnect(p_at_state);
1322 schedule_init(cs, MS_RECOVER);
1323 break;
1324 case ACT_FAILDLE0:
1325 cs->cur_at_seq = SEQ_NONE;
1326 dev_warn(cs->dev, "Could not leave DLE mode.\n");
1327 at_state2 = &cs->bcs[cs->curchannel].at_state;
1328 disconnect(&at_state2);
1329 schedule_init(cs, MS_RECOVER);
1330 break;
1331 case ACT_FAILDLE1:
1332 cs->cur_at_seq = SEQ_NONE;
1333 dev_warn(cs->dev,
1334 "Could not enter DLE mode. Trying to hang up.\n");
1335 channel = cs->curchannel;
1336 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1337 cs->commands_pending = 1;
1338 break;
1339
1340 case ACT_CID: /* got cid; start dialing */
1341 cs->cur_at_seq = SEQ_NONE;
1342 channel = cs->curchannel;
1343 if (ev->parameter > 0 && ev->parameter <= 65535) {
1344 cs->bcs[channel].at_state.cid = ev->parameter;
1345 cs->bcs[channel].at_state.pending_commands |=
1346 PC_DIAL;
1347 cs->commands_pending = 1;
1348 break;
1349 }
1350 /* fall through */
1351 case ACT_FAILCID:
1352 cs->cur_at_seq = SEQ_NONE;
1353 channel = cs->curchannel;
1354 if (!reinit_and_retry(cs, channel)) {
1355 dev_warn(cs->dev,
1356 "Could not get a call ID. Cannot dial.\n");
1357 at_state2 = &cs->bcs[channel].at_state;
1358 disconnect(&at_state2);
1359 }
1360 break;
1361 case ACT_ABORTCID:
1362 cs->cur_at_seq = SEQ_NONE;
1363 at_state2 = &cs->bcs[cs->curchannel].at_state;
1364 disconnect(&at_state2);
1365 break;
1366
1367 case ACT_DIALING:
1368 case ACT_ACCEPTED:
1369 cs->cur_at_seq = SEQ_NONE;
1370 break;
1371
1372 case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL processing */
1373 disconnect(p_at_state);
1374 break;
1375
1376 case ACT_ABORTDIAL: /* error/timeout during dial preparation */
1377 cs->cur_at_seq = SEQ_NONE;
1378 at_state->pending_commands |= PC_HUP;
1379 cs->commands_pending = 1;
1380 break;
1381
1382 case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
1383 case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
1384 case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
1385 at_state->pending_commands |= PC_HUP;
1386 cs->commands_pending = 1;
1387 break;
1388 case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1389 are not handled properly anymore */
1390 at_state->getstring = 1;
1391 break;
1392 case ACT_SETVER:
1393 if (!ev->ptr) {
1394 *p_genresp = 1;
1395 *p_resp_code = RSP_ERROR;
1396 break;
1397 }
1398 s = ev->ptr;
1399
1400 if (!strcmp(s, "OK")) {
1401 *p_genresp = 1;
1402 *p_resp_code = RSP_ERROR;
1403 break;
1404 }
1405
1406 for (i = 0; i < 4; ++i) {
1407 val = simple_strtoul(s, (char **) &e, 10);
1408 if (val > INT_MAX || e == s)
1409 break;
1410 if (i == 3) {
1411 if (*e)
1412 break;
1413 } else if (*e != '.')
1414 break;
1415 else
1416 s = e + 1;
1417 cs->fwver[i] = val;
1418 }
1419 if (i != 4) {
1420 *p_genresp = 1;
1421 *p_resp_code = RSP_ERROR;
1422 break;
1423 }
1424 /*at_state->getstring = 1;*/
1425 cs->gotfwver = 0;
1426 break;
1427 case ACT_GOTVER:
1428 if (cs->gotfwver == 0) {
1429 cs->gotfwver = 1;
1430 gig_dbg(DEBUG_ANY,
1431 "firmware version %02d.%03d.%02d.%02d",
1432 cs->fwver[0], cs->fwver[1],
1433 cs->fwver[2], cs->fwver[3]);
1434 break;
1435 }
1436 /* fall through */
1437 case ACT_FAILVER:
1438 cs->gotfwver = -1;
1439 dev_err(cs->dev, "could not read firmware version.\n");
1440 break;
1441 case ACT_ERROR:
1442 gig_dbg(DEBUG_ANY, "%s: ERROR response in ConState %d",
1443 __func__, at_state->ConState);
1444 cs->cur_at_seq = SEQ_NONE;
1445 break;
1446 #ifdef CONFIG_GIGASET_DEBUG
1447 case ACT_TEST:
1448 {
1449 static int count = 3; //2; //1;
1450 *p_genresp = 1;
1451 *p_resp_code = count ? RSP_ERROR : RSP_OK;
1452 if (count > 0)
1453 --count;
1454 }
1455 break;
1456 #endif
1457 case ACT_DEBUG:
1458 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1459 __func__, ev->type, at_state->ConState);
1460 break;
1461 case ACT_WARN:
1462 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1463 __func__, ev->type, at_state->ConState);
1464 break;
1465 case ACT_ZCAU:
1466 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1467 ev->parameter, at_state->ConState);
1468 break;
1469
1470 /* events from the LL */
1471 case ACT_DIAL:
1472 start_dial(at_state, ev->ptr, ev->parameter);
1473 break;
1474 case ACT_ACCEPT:
1475 start_accept(at_state);
1476 break;
1477 case ACT_PROTO_L2:
1478 gig_dbg(DEBUG_CMD, "set protocol to %u",
1479 (unsigned) ev->parameter);
1480 at_state->bcs->proto2 = ev->parameter;
1481 break;
1482 case ACT_HUP:
1483 at_state->pending_commands |= PC_HUP;
1484 cs->commands_pending = 1;
1485 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
1486 break;
1487
1488 /* hotplug events */
1489 case ACT_STOP:
1490 do_stop(cs);
1491 break;
1492 case ACT_START:
1493 do_start(cs);
1494 break;
1495
1496 /* events from the interface */ // FIXME without ACT_xxxx?
1497 case ACT_IF_LOCK:
1498 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1499 cs->waiting = 0;
1500 wake_up(&cs->waitqueue);
1501 break;
1502 case ACT_IF_VER:
1503 if (ev->parameter != 0)
1504 cs->cmd_result = -EINVAL;
1505 else if (cs->gotfwver != 1) {
1506 cs->cmd_result = -ENOENT;
1507 } else {
1508 memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1509 cs->cmd_result = 0;
1510 }
1511 cs->waiting = 0;
1512 wake_up(&cs->waitqueue);
1513 break;
1514
1515 /* events from the proc file system */ // FIXME without ACT_xxxx?
1516 case ACT_PROC_CIDMODE:
1517 spin_lock_irqsave(&cs->lock, flags);
1518 if (ev->parameter != cs->cidmode) {
1519 cs->cidmode = ev->parameter;
1520 if (ev->parameter) {
1521 cs->at_state.pending_commands |= PC_CIDMODE;
1522 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1523 } else {
1524 cs->at_state.pending_commands |= PC_UMMODE;
1525 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
1526 }
1527 cs->commands_pending = 1;
1528 }
1529 spin_unlock_irqrestore(&cs->lock, flags);
1530 cs->waiting = 0;
1531 wake_up(&cs->waitqueue);
1532 break;
1533
1534 /* events from the hardware drivers */
1535 case ACT_NOTIFY_BC_DOWN:
1536 bchannel_down(bcs);
1537 break;
1538 case ACT_NOTIFY_BC_UP:
1539 bchannel_up(bcs);
1540 break;
1541 case ACT_SHUTDOWN:
1542 do_shutdown(cs);
1543 break;
1544
1545
1546 default:
1547 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1548 *pp_command = at_state->bcs->commands[action - ACT_CMD];
1549 if (!*pp_command) {
1550 *p_genresp = 1;
1551 *p_resp_code = RSP_NULL;
1552 }
1553 } else
1554 dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
1555 }
1556 }
1557
1558 /* State machine to do the calling and hangup procedure */
1559 static void process_event(struct cardstate *cs, struct event_t *ev)
1560 {
1561 struct bc_state *bcs;
1562 char *p_command = NULL;
1563 struct reply_t *rep;
1564 int rcode;
1565 int genresp = 0;
1566 int resp_code = RSP_ERROR;
1567 int sendcid;
1568 struct at_state_t *at_state;
1569 int index;
1570 int curact;
1571 unsigned long flags;
1572
1573 if (ev->cid >= 0) {
1574 at_state = at_state_from_cid(cs, ev->cid);
1575 if (!at_state) {
1576 gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1577 NULL, 0, NULL);
1578 return;
1579 }
1580 } else {
1581 at_state = ev->at_state;
1582 if (at_state_invalid(cs, at_state)) {
1583 gig_dbg(DEBUG_ANY, "event for invalid at_state %p",
1584 at_state);
1585 return;
1586 }
1587 }
1588
1589 gig_dbg(DEBUG_CMD, "connection state %d, event %d",
1590 at_state->ConState, ev->type);
1591
1592 bcs = at_state->bcs;
1593 sendcid = at_state->cid;
1594
1595 /* Setting the pointer to the dial array */
1596 rep = at_state->replystruct;
1597
1598 spin_lock_irqsave(&cs->lock, flags);
1599 if (ev->type == EV_TIMEOUT) {
1600 if (ev->parameter != at_state->timer_index
1601 || !at_state->timer_active) {
1602 ev->type = RSP_NONE; /* old timeout */
1603 gig_dbg(DEBUG_ANY, "old timeout");
1604 } else if (!at_state->waiting)
1605 gig_dbg(DEBUG_ANY, "timeout occurred");
1606 else
1607 gig_dbg(DEBUG_ANY, "stopped waiting");
1608 }
1609 spin_unlock_irqrestore(&cs->lock, flags);
1610
1611 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1612 or at_state->str_var[STR_XXXX], set it */
1613 if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1614 index = ev->type - RSP_VAR;
1615 at_state->int_var[index] = ev->parameter;
1616 } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1617 index = ev->type - RSP_STR;
1618 kfree(at_state->str_var[index]);
1619 at_state->str_var[index] = ev->ptr;
1620 ev->ptr = NULL; /* prevent process_events() from
1621 deallocating ptr */
1622 }
1623
1624 if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1625 at_state->getstring = 0;
1626
1627 /* Search row in dial array which matches modem response and current
1628 constate */
1629 for (;; rep++) {
1630 rcode = rep->resp_code;
1631 if (rcode == RSP_LAST) {
1632 /* found nothing...*/
1633 dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1634 "resp_code %d in ConState %d!\n",
1635 __func__, ev->type, at_state->ConState);
1636 return;
1637 }
1638 if ((rcode == RSP_ANY || rcode == ev->type)
1639 && ((int) at_state->ConState >= rep->min_ConState)
1640 && (rep->max_ConState < 0
1641 || (int) at_state->ConState <= rep->max_ConState)
1642 && (rep->parameter < 0 || rep->parameter == ev->parameter))
1643 break;
1644 }
1645
1646 p_command = rep->command;
1647
1648 at_state->waiting = 0;
1649 for (curact = 0; curact < MAXACT; ++curact) {
1650 /* The row tells us what we should do ..
1651 */
1652 do_action(rep->action[curact], cs, bcs, &at_state, &p_command, &genresp, &resp_code, ev);
1653 if (!at_state)
1654 break; /* may be freed after disconnect */
1655 }
1656
1657 if (at_state) {
1658 /* Jump to the next con-state regarding the array */
1659 if (rep->new_ConState >= 0)
1660 at_state->ConState = rep->new_ConState;
1661
1662 if (genresp) {
1663 spin_lock_irqsave(&cs->lock, flags);
1664 at_state->timer_expires = 0; //FIXME
1665 at_state->timer_active = 0; //FIXME
1666 spin_unlock_irqrestore(&cs->lock, flags);
1667 gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
1668 } else {
1669 /* Send command to modem if not NULL... */
1670 if (p_command/*rep->command*/) {
1671 if (cs->connected)
1672 send_command(cs, p_command,
1673 sendcid, cs->dle,
1674 GFP_ATOMIC);
1675 else
1676 gigaset_add_event(cs, at_state,
1677 RSP_NODEV,
1678 NULL, 0, NULL);
1679 }
1680
1681 spin_lock_irqsave(&cs->lock, flags);
1682 if (!rep->timeout) {
1683 at_state->timer_expires = 0;
1684 at_state->timer_active = 0;
1685 } else if (rep->timeout > 0) { /* new timeout */
1686 at_state->timer_expires = rep->timeout * 10;
1687 at_state->timer_active = 1;
1688 ++at_state->timer_index;
1689 }
1690 spin_unlock_irqrestore(&cs->lock, flags);
1691 }
1692 }
1693 }
1694
1695 static void schedule_sequence(struct cardstate *cs,
1696 struct at_state_t *at_state, int sequence)
1697 {
1698 cs->cur_at_seq = sequence;
1699 gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1700 }
1701
1702 static void process_command_flags(struct cardstate *cs)
1703 {
1704 struct at_state_t *at_state = NULL;
1705 struct bc_state *bcs;
1706 int i;
1707 int sequence;
1708 unsigned long flags;
1709
1710 cs->commands_pending = 0;
1711
1712 if (cs->cur_at_seq) {
1713 gig_dbg(DEBUG_CMD, "not searching scheduled commands: busy");
1714 return;
1715 }
1716
1717 gig_dbg(DEBUG_CMD, "searching scheduled commands");
1718
1719 sequence = SEQ_NONE;
1720
1721 /* clear pending_commands and hangup channels on shutdown */
1722 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1723 cs->at_state.pending_commands &= ~PC_CIDMODE;
1724 for (i = 0; i < cs->channels; ++i) {
1725 bcs = cs->bcs + i;
1726 at_state = &bcs->at_state;
1727 at_state->pending_commands &=
1728 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1729 if (at_state->cid > 0)
1730 at_state->pending_commands |= PC_HUP;
1731 if (at_state->pending_commands & PC_CID) {
1732 at_state->pending_commands |= PC_NOCID;
1733 at_state->pending_commands &= ~PC_CID;
1734 }
1735 }
1736 }
1737
1738 /* clear pending_commands and hangup channels on reset */
1739 if (cs->at_state.pending_commands & PC_INIT) {
1740 cs->at_state.pending_commands &= ~PC_CIDMODE;
1741 for (i = 0; i < cs->channels; ++i) {
1742 bcs = cs->bcs + i;
1743 at_state = &bcs->at_state;
1744 at_state->pending_commands &=
1745 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1746 if (at_state->cid > 0)
1747 at_state->pending_commands |= PC_HUP;
1748 if (cs->mstate == MS_RECOVER) {
1749 if (at_state->pending_commands & PC_CID) {
1750 at_state->pending_commands |= PC_NOCID;
1751 at_state->pending_commands &= ~PC_CID;
1752 }
1753 }
1754 }
1755 }
1756
1757 /* only switch back to unimodem mode, if no commands are pending and no channels are up */
1758 spin_lock_irqsave(&cs->lock, flags);
1759 if (cs->at_state.pending_commands == PC_UMMODE
1760 && !cs->cidmode
1761 && list_empty(&cs->temp_at_states)
1762 && cs->mode == M_CID) {
1763 sequence = SEQ_UMMODE;
1764 at_state = &cs->at_state;
1765 for (i = 0; i < cs->channels; ++i) {
1766 bcs = cs->bcs + i;
1767 if (bcs->at_state.pending_commands ||
1768 bcs->at_state.cid > 0) {
1769 sequence = SEQ_NONE;
1770 break;
1771 }
1772 }
1773 }
1774 spin_unlock_irqrestore(&cs->lock, flags);
1775 cs->at_state.pending_commands &= ~PC_UMMODE;
1776 if (sequence != SEQ_NONE) {
1777 schedule_sequence(cs, at_state, sequence);
1778 return;
1779 }
1780
1781 for (i = 0; i < cs->channels; ++i) {
1782 bcs = cs->bcs + i;
1783 if (bcs->at_state.pending_commands & PC_HUP) {
1784 bcs->at_state.pending_commands &= ~PC_HUP;
1785 if (bcs->at_state.pending_commands & PC_CID) {
1786 /* not yet dialing: PC_NOCID is sufficient */
1787 bcs->at_state.pending_commands |= PC_NOCID;
1788 bcs->at_state.pending_commands &= ~PC_CID;
1789 } else {
1790 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1791 return;
1792 }
1793 }
1794 if (bcs->at_state.pending_commands & PC_NOCID) {
1795 bcs->at_state.pending_commands &= ~PC_NOCID;
1796 cs->curchannel = bcs->channel;
1797 schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1798 return;
1799 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1800 bcs->at_state.pending_commands &= ~PC_DLE0;
1801 cs->curchannel = bcs->channel;
1802 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1803 return;
1804 }
1805 }
1806
1807 list_for_each_entry(at_state, &cs->temp_at_states, list)
1808 if (at_state->pending_commands & PC_HUP) {
1809 at_state->pending_commands &= ~PC_HUP;
1810 schedule_sequence(cs, at_state, SEQ_HUP);
1811 return;
1812 }
1813
1814 if (cs->at_state.pending_commands & PC_INIT) {
1815 cs->at_state.pending_commands &= ~PC_INIT;
1816 cs->dle = 0; //FIXME
1817 cs->inbuf->inputstate = INS_command;
1818 //FIXME reset card state (or -> LOCK0)?
1819 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1820 return;
1821 }
1822 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1823 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1824 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1825 return;
1826 }
1827 if (cs->at_state.pending_commands & PC_CIDMODE) {
1828 cs->at_state.pending_commands &= ~PC_CIDMODE;
1829 if (cs->mode == M_UNIMODEM) {
1830 cs->retry_count = 1;
1831 schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1832 return;
1833 }
1834 }
1835
1836 for (i = 0; i < cs->channels; ++i) {
1837 bcs = cs->bcs + i;
1838 if (bcs->at_state.pending_commands & PC_DLE1) {
1839 bcs->at_state.pending_commands &= ~PC_DLE1;
1840 cs->curchannel = bcs->channel;
1841 schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1842 return;
1843 }
1844 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1845 bcs->at_state.pending_commands &= ~PC_ACCEPT;
1846 schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1847 return;
1848 }
1849 if (bcs->at_state.pending_commands & PC_DIAL) {
1850 bcs->at_state.pending_commands &= ~PC_DIAL;
1851 schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1852 return;
1853 }
1854 if (bcs->at_state.pending_commands & PC_CID) {
1855 switch (cs->mode) {
1856 case M_UNIMODEM:
1857 cs->at_state.pending_commands |= PC_CIDMODE;
1858 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1859 cs->commands_pending = 1;
1860 return;
1861 #ifdef GIG_MAYINITONDIAL
1862 case M_UNKNOWN:
1863 schedule_init(cs, MS_INIT);
1864 return;
1865 #endif
1866 }
1867 bcs->at_state.pending_commands &= ~PC_CID;
1868 cs->curchannel = bcs->channel;
1869 #ifdef GIG_RETRYCID
1870 cs->retry_count = 2;
1871 #else
1872 cs->retry_count = 1;
1873 #endif
1874 schedule_sequence(cs, &cs->at_state, SEQ_CID);
1875 return;
1876 }
1877 }
1878 }
1879
1880 static void process_events(struct cardstate *cs)
1881 {
1882 struct event_t *ev;
1883 unsigned head, tail;
1884 int i;
1885 int check_flags = 0;
1886 int was_busy;
1887 unsigned long flags;
1888
1889 spin_lock_irqsave(&cs->ev_lock, flags);
1890 head = cs->ev_head;
1891
1892 for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1893 tail = cs->ev_tail;
1894 if (tail == head) {
1895 if (!check_flags && !cs->commands_pending)
1896 break;
1897 check_flags = 0;
1898 spin_unlock_irqrestore(&cs->ev_lock, flags);
1899 process_command_flags(cs);
1900 spin_lock_irqsave(&cs->ev_lock, flags);
1901 tail = cs->ev_tail;
1902 if (tail == head) {
1903 if (!cs->commands_pending)
1904 break;
1905 continue;
1906 }
1907 }
1908
1909 ev = cs->events + head;
1910 was_busy = cs->cur_at_seq != SEQ_NONE;
1911 spin_unlock_irqrestore(&cs->ev_lock, flags);
1912 process_event(cs, ev);
1913 spin_lock_irqsave(&cs->ev_lock, flags);
1914 kfree(ev->ptr);
1915 ev->ptr = NULL;
1916 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1917 check_flags = 1;
1918
1919 head = (head + 1) % MAX_EVENTS;
1920 cs->ev_head = head;
1921 }
1922
1923 spin_unlock_irqrestore(&cs->ev_lock, flags);
1924
1925 if (i == 2 * MAX_EVENTS) {
1926 dev_err(cs->dev,
1927 "infinite loop in process_events; aborting.\n");
1928 }
1929 }
1930
1931 /* tasklet scheduled on any event received from the Gigaset device
1932 * parameter:
1933 * data ISDN controller state structure
1934 */
1935 void gigaset_handle_event(unsigned long data)
1936 {
1937 struct cardstate *cs = (struct cardstate *) data;
1938
1939 /* handle incoming data on control/common channel */
1940 if (cs->inbuf->head != cs->inbuf->tail) {
1941 gig_dbg(DEBUG_INTR, "processing new data");
1942 cs->ops->handle_input(cs->inbuf);
1943 }
1944
1945 process_events(cs);
1946 }
Linux with added FPC-III support