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NFS: Fix a bug in nfs_fscache_release_page()
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / isdn / gigaset / ev-layer.c
blob2d91049571a4ce20470acb86d7120bee326b911c
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, 202, 0, {ACT_ERROR}},//DELETE
211 {RSP_ZDLE, 202,202, 0, 0, 0, {ACT_DLE0}},
212 {RSP_NODEV, 200,249, -1, 0, 0, {ACT_FAKEDLE0}},
213 {RSP_ERROR, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
214 {EV_TIMEOUT, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
215
216 /* enter dle mode */
217 {RSP_INIT, 0, 0,SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"},
218 {RSP_OK, 251,251, -1, 252,-1},
219 {RSP_ZDLE, 252,252, 1, 0, 0, {ACT_DLE1}},
220 {RSP_ERROR, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
221 {EV_TIMEOUT, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
222
223 /* incoming call */
224 {RSP_RING, -1, -1, -1, -1,-1, {ACT_RING}},
225
226 /* get cid */
227 //{RSP_INIT, 0, 0,300, 901, 0, {ACT_TEST}},
228 //{RSP_ERROR, 901,901, -1, 0, 0, {ACT_FAILCID}},
229 //{RSP_OK, 901,901, -1, 301, 5, {0}, "^SGCI?\r"},
230
231 {RSP_INIT, 0, 0,SEQ_CID, 301, 5, {0}, "^SGCI?\r"},
232 {RSP_OK, 301,301, -1, 302,-1},
233 {RSP_ZGCI, 302,302, -1, 0, 0, {ACT_CID}},
234 {RSP_ERROR, 301,349, -1, 0, 0, {ACT_FAILCID}},
235 {EV_TIMEOUT, 301,349, -1, 0, 0, {ACT_FAILCID}},
236
237 /* enter cid mode */
238 {RSP_INIT, 0, 0,SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"},
239 {RSP_OK, 150,150, -1, 0, 0, {ACT_CMODESET}},
240 {RSP_ERROR, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
241 {EV_TIMEOUT, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
242
243 /* leave cid mode */
244 //{RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "^SGCI=0\r"},
245 {RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "Z\r"},
246 {RSP_OK, 160,160, -1, 0, 0, {ACT_UMODESET}},
247 {RSP_ERROR, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
248 {EV_TIMEOUT, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
249
250 /* abort getting cid */
251 {RSP_INIT, 0, 0,SEQ_NOCID, 0, 0, {ACT_ABORTCID}},
252
253 /* reset */
254 {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"},
255 {RSP_OK, 504,504, -1, 0, 0, {ACT_SDOWN}},
256 {RSP_ERROR, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
257 {EV_TIMEOUT, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
258 {RSP_NODEV, 501,599, -1, 0, 0, {ACT_FAKESDOWN}},
259
260 {EV_PROC_CIDMODE,-1, -1, -1, -1,-1, {ACT_PROC_CIDMODE}}, //FIXME
261 {EV_IF_LOCK, -1, -1, -1, -1,-1, {ACT_IF_LOCK}}, //FIXME
262 {EV_IF_VER, -1, -1, -1, -1,-1, {ACT_IF_VER}}, //FIXME
263 {EV_START, -1, -1, -1, -1,-1, {ACT_START}}, //FIXME
264 {EV_STOP, -1, -1, -1, -1,-1, {ACT_STOP}}, //FIXME
265 {EV_SHUTDOWN, -1, -1, -1, -1,-1, {ACT_SHUTDOWN}}, //FIXME
266
267 /* misc. */
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}}, /* if not remote hup */
332 //{RSP_ZSAU, 403,403,ZSAU_NULL, 401, 0, {ACT_ERROR}}, //DELETE//FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
333 {RSP_ZSAU, 403,403,ZSAU_NULL, 0, 0, {ACT_DISCONNECT}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
334 {RSP_NODEV, 401,403, -1, 0, 0, {ACT_FAKEHUP}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
335 {RSP_ERROR, 401,401, -1, 0, 0, {ACT_ABORTHUP}},
336 {EV_TIMEOUT, 401,403, -1, 0, 0, {ACT_ABORTHUP}},
337
338 {EV_BC_CLOSED, 0, 0, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME new constate + timeout
339
340 /* ring */
341 {RSP_ZBC, 700,700, -1, -1,-1, {0}},
342 {RSP_ZHLC, 700,700, -1, -1,-1, {0}},
343 {RSP_NMBR, 700,700, -1, -1,-1, {0}},
344 {RSP_ZCPN, 700,700, -1, -1,-1, {0}},
345 {RSP_ZCTP, 700,700, -1, -1,-1, {0}},
346 {EV_TIMEOUT, 700,700, -1, 720,720, {ACT_ICALL}},
347 {EV_BC_CLOSED,720,720, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}},
348
349 /*accept icall*/
350 {EV_ACCEPT, -1, -1, -1, -1,-1, {ACT_ACCEPT}}, //FIXME
351 {RSP_INIT, 720,720,SEQ_ACCEPT, 721, 5, {ACT_CMD+AT_PROTO}},
352 {RSP_OK, 721,721, -1, 722, 5, {ACT_CMD+AT_ISO}},
353 {RSP_OK, 722,722, -1, 723, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
354 {RSP_OK, 723,723, -1, 724, 5, {0}},
355 {RSP_ZVLS, 724,724, 17, 750,50, {ACT_ACCEPTED}},
356 {RSP_ERROR, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
357 {EV_TIMEOUT, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
358 {RSP_ZSAU, 700,729,ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT}},
359 {RSP_ZSAU, 700,729,ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT}},
360 {RSP_ZSAU, 700,729,ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT}},
361
362 {EV_BC_OPEN, 750,750, -1, 751,-1},
363 {EV_TIMEOUT, 750,751, -1, 0, 0, {ACT_CONNTIMEOUT}},
364
365 /* B channel closed (general case) */
366 {EV_BC_CLOSED, -1, -1, -1, -1,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME
367
368 /* misc. */
369 {EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME
370
371 {RSP_ZCON, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
372 {RSP_ZCCR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
373 {RSP_ZAOC, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
374 {RSP_ZCSTR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
375
376 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
377 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
378 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
379 {RSP_LAST}
380 };
381
382
383 static const struct resp_type_t resp_type[] =
384 {
385 /*{"", RSP_EMPTY, RT_NOTHING},*/
386 {"OK", RSP_OK, RT_NOTHING},
387 {"ERROR", RSP_ERROR, RT_NOTHING},
388 {"ZSAU", RSP_ZSAU, RT_ZSAU},
389 {"ZCAU", RSP_ZCAU, RT_ZCAU},
390 {"RING", RSP_RING, RT_RING},
391 {"ZGCI", RSP_ZGCI, RT_NUMBER},
392 {"ZVLS", RSP_ZVLS, RT_NUMBER},
393 {"ZCTP", RSP_ZCTP, RT_NUMBER},
394 {"ZDLE", RSP_ZDLE, RT_NUMBER},
395 {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
396 {"ZCCR", RSP_ZCCR, RT_NUMBER},
397 {"ZMWI", RSP_ZMWI, RT_NUMBER},
398 {"ZHLC", RSP_ZHLC, RT_STRING},
399 {"ZBC", RSP_ZBC, RT_STRING},
400 {"NMBR", RSP_NMBR, RT_STRING},
401 {"ZCPN", RSP_ZCPN, RT_STRING},
402 {"ZCON", RSP_ZCON, RT_STRING},
403 {"ZAOC", RSP_ZAOC, RT_STRING},
404 {"ZCSTR", RSP_ZCSTR, RT_STRING},
405 {"ZCFG", RSP_ZCFG, RT_HEX},
406 {"ZLOG", RSP_ZLOG, RT_NOTHING},
407 {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
408 {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
409 {NULL,0,0}
410 };
411
412 /*
413 * Get integer from char-pointer
414 */
415 static int isdn_getnum(char *p)
416 {
417 int v = -1;
418
419 gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
420
421 while (*p >= '0' && *p <= '9')
422 v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
423 if (*p)
424 v = -1; /* invalid Character */
425 return v;
426 }
427
428 /*
429 * Get integer from char-pointer
430 */
431 static int isdn_gethex(char *p)
432 {
433 int v = 0;
434 int c;
435
436 gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
437
438 if (!*p)
439 return -1;
440
441 do {
442 if (v > (INT_MAX - 15) / 16)
443 return -1;
444 c = *p;
445 if (c >= '0' && c <= '9')
446 c -= '0';
447 else if (c >= 'a' && c <= 'f')
448 c -= 'a' - 10;
449 else if (c >= 'A' && c <= 'F')
450 c -= 'A' - 10;
451 else
452 return -1;
453 v = v * 16 + c;
454 } while (*++p);
455
456 return v;
457 }
458
459 /* retrieve CID from parsed response
460 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
461 */
462 static int cid_of_response(char *s)
463 {
464 int cid;
465
466 if (s[-1] != ';')
467 return 0; /* no CID separator */
468 cid = isdn_getnum(s);
469 if (cid < 0)
470 return 0; /* CID not numeric */
471 if (cid < 1 || cid > 65535)
472 return -1; /* CID out of range */
473 return cid;
474 //FIXME is ;<digit>+ at end of non-CID response really impossible?
475 }
476
477 /* This function will be called via task queue from the callback handler.
478 * We received a modem response and have to handle it..
479 */
480 void gigaset_handle_modem_response(struct cardstate *cs)
481 {
482 unsigned char *argv[MAX_REC_PARAMS + 1];
483 int params;
484 int i, j;
485 const struct resp_type_t *rt;
486 int curarg;
487 unsigned long flags;
488 unsigned next, tail, head;
489 struct event_t *event;
490 int resp_code;
491 int param_type;
492 int abort;
493 size_t len;
494 int cid;
495 int rawstring;
496
497 len = cs->cbytes;
498 if (!len) {
499 /* ignore additional LFs/CRs (M10x config mode or cx100) */
500 gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
501 return;
502 }
503 cs->respdata[len] = 0;
504 gig_dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
505 argv[0] = cs->respdata;
506 params = 1;
507 if (cs->at_state.getstring) {
508 /* getstring only allowed without cid at the moment */
509 cs->at_state.getstring = 0;
510 rawstring = 1;
511 cid = 0;
512 } else {
513 /* parse line */
514 for (i = 0; i < len; i++)
515 switch (cs->respdata[i]) {
516 case ';':
517 case ',':
518 case '=':
519 if (params > MAX_REC_PARAMS) {
520 dev_warn(cs->dev,
521 "too many parameters in response\n");
522 /* need last parameter (might be CID) */
523 params--;
524 }
525 argv[params++] = cs->respdata + i + 1;
526 }
527
528 rawstring = 0;
529 cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
530 if (cid < 0) {
531 gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
532 NULL, 0, NULL);
533 return;
534 }
535
536 for (j = 1; j < params; ++j)
537 argv[j][-1] = 0;
538
539 gig_dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
540 if (cid) {
541 --params;
542 gig_dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
543 }
544 gig_dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
545 for (j = 1; j < params; j++)
546 gig_dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
547 }
548
549 spin_lock_irqsave(&cs->ev_lock, flags);
550 head = cs->ev_head;
551 tail = cs->ev_tail;
552
553 abort = 1;
554 curarg = 0;
555 while (curarg < params) {
556 next = (tail + 1) % MAX_EVENTS;
557 if (unlikely(next == head)) {
558 dev_err(cs->dev, "event queue full\n");
559 break;
560 }
561
562 event = cs->events + tail;
563 event->at_state = NULL;
564 event->cid = cid;
565 event->ptr = NULL;
566 event->arg = NULL;
567 tail = next;
568
569 if (rawstring) {
570 resp_code = RSP_STRING;
571 param_type = RT_STRING;
572 } else {
573 for (rt = resp_type; rt->response; ++rt)
574 if (!strcmp(argv[curarg], rt->response))
575 break;
576
577 if (!rt->response) {
578 event->type = RSP_UNKNOWN;
579 dev_warn(cs->dev,
580 "unknown modem response: %s\n",
581 argv[curarg]);
582 break;
583 }
584
585 resp_code = rt->resp_code;
586 param_type = rt->type;
587 ++curarg;
588 }
589
590 event->type = resp_code;
591
592 switch (param_type) {
593 case RT_NOTHING:
594 break;
595 case RT_RING:
596 if (!cid) {
597 dev_err(cs->dev,
598 "received RING without CID!\n");
599 event->type = RSP_INVAL;
600 abort = 1;
601 } else {
602 event->cid = 0;
603 event->parameter = cid;
604 abort = 0;
605 }
606 break;
607 case RT_ZSAU:
608 if (curarg >= params) {
609 event->parameter = ZSAU_NONE;
610 break;
611 }
612 if (!strcmp(argv[curarg], "OUTGOING_CALL_PROCEEDING"))
613 event->parameter = ZSAU_OUTGOING_CALL_PROCEEDING;
614 else if (!strcmp(argv[curarg], "CALL_DELIVERED"))
615 event->parameter = ZSAU_CALL_DELIVERED;
616 else if (!strcmp(argv[curarg], "ACTIVE"))
617 event->parameter = ZSAU_ACTIVE;
618 else if (!strcmp(argv[curarg], "DISCONNECT_IND"))
619 event->parameter = ZSAU_DISCONNECT_IND;
620 else if (!strcmp(argv[curarg], "NULL"))
621 event->parameter = ZSAU_NULL;
622 else if (!strcmp(argv[curarg], "DISCONNECT_REQ"))
623 event->parameter = ZSAU_DISCONNECT_REQ;
624 else {
625 event->parameter = ZSAU_UNKNOWN;
626 dev_warn(cs->dev,
627 "%s: unknown parameter %s after ZSAU\n",
628 __func__, argv[curarg]);
629 }
630 ++curarg;
631 break;
632 case RT_STRING:
633 if (curarg < params) {
634 event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
635 if (!event->ptr)
636 dev_err(cs->dev, "out of memory\n");
637 ++curarg;
638 }
639 gig_dbg(DEBUG_CMD, "string==%s",
640 event->ptr ? (char *) event->ptr : "NULL");
641 break;
642 case RT_ZCAU:
643 event->parameter = -1;
644 if (curarg + 1 < params) {
645 i = isdn_gethex(argv[curarg]);
646 j = isdn_gethex(argv[curarg + 1]);
647 if (i >= 0 && i < 256 && j >= 0 && j < 256)
648 event->parameter = (unsigned) i << 8
649 | j;
650 curarg += 2;
651 } else
652 curarg = params - 1;
653 break;
654 case RT_NUMBER:
655 case RT_HEX:
656 if (curarg < params) {
657 if (param_type == RT_HEX)
658 event->parameter =
659 isdn_gethex(argv[curarg]);
660 else
661 event->parameter =
662 isdn_getnum(argv[curarg]);
663 ++curarg;
664 } else
665 event->parameter = -1;
666 gig_dbg(DEBUG_CMD, "parameter==%d", event->parameter);
667 break;
668 }
669
670 if (resp_code == RSP_ZDLE)
671 cs->dle = event->parameter;
672
673 if (abort)
674 break;
675 }
676
677 cs->ev_tail = tail;
678 spin_unlock_irqrestore(&cs->ev_lock, flags);
679
680 if (curarg != params)
681 gig_dbg(DEBUG_ANY,
682 "invalid number of processed parameters: %d/%d",
683 curarg, params);
684 }
685 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
686
687 /* disconnect
688 * process closing of connection associated with given AT state structure
689 */
690 static void disconnect(struct at_state_t **at_state_p)
691 {
692 unsigned long flags;
693 struct bc_state *bcs = (*at_state_p)->bcs;
694 struct cardstate *cs = (*at_state_p)->cs;
695
696 spin_lock_irqsave(&cs->lock, flags);
697 ++(*at_state_p)->seq_index;
698
699 /* revert to selected idle mode */
700 if (!cs->cidmode) {
701 cs->at_state.pending_commands |= PC_UMMODE;
702 cs->commands_pending = 1;
703 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
704 }
705 spin_unlock_irqrestore(&cs->lock, flags);
706
707 if (bcs) {
708 /* B channel assigned: invoke hardware specific handler */
709 cs->ops->close_bchannel(bcs);
710 } else {
711 /* no B channel assigned: just deallocate */
712 spin_lock_irqsave(&cs->lock, flags);
713 list_del(&(*at_state_p)->list);
714 kfree(*at_state_p);
715 *at_state_p = NULL;
716 spin_unlock_irqrestore(&cs->lock, flags);
717 }
718 }
719
720 /* get_free_channel
721 * get a free AT state structure: either one of those associated with the
722 * B channels of the Gigaset device, or if none of those is available,
723 * a newly allocated one with bcs=NULL
724 * The structure should be freed by calling disconnect() after use.
725 */
726 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
727 int cid)
728 /* cids: >0: siemens-cid
729 0: without cid
730 -1: no cid assigned yet
731 */
732 {
733 unsigned long flags;
734 int i;
735 struct at_state_t *ret;
736
737 for (i = 0; i < cs->channels; ++i)
738 if (gigaset_get_channel(cs->bcs + i)) {
739 ret = &cs->bcs[i].at_state;
740 ret->cid = cid;
741 return ret;
742 }
743
744 spin_lock_irqsave(&cs->lock, flags);
745 ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
746 if (ret) {
747 gigaset_at_init(ret, NULL, cs, cid);
748 list_add(&ret->list, &cs->temp_at_states);
749 }
750 spin_unlock_irqrestore(&cs->lock, flags);
751 return ret;
752 }
753
754 static void init_failed(struct cardstate *cs, int mode)
755 {
756 int i;
757 struct at_state_t *at_state;
758
759 cs->at_state.pending_commands &= ~PC_INIT;
760 cs->mode = mode;
761 cs->mstate = MS_UNINITIALIZED;
762 gigaset_free_channels(cs);
763 for (i = 0; i < cs->channels; ++i) {
764 at_state = &cs->bcs[i].at_state;
765 if (at_state->pending_commands & PC_CID) {
766 at_state->pending_commands &= ~PC_CID;
767 at_state->pending_commands |= PC_NOCID;
768 cs->commands_pending = 1;
769 }
770 }
771 }
772
773 static void schedule_init(struct cardstate *cs, int state)
774 {
775 if (cs->at_state.pending_commands & PC_INIT) {
776 gig_dbg(DEBUG_CMD, "not scheduling PC_INIT again");
777 return;
778 }
779 cs->mstate = state;
780 cs->mode = M_UNKNOWN;
781 gigaset_block_channels(cs);
782 cs->at_state.pending_commands |= PC_INIT;
783 cs->commands_pending = 1;
784 gig_dbg(DEBUG_CMD, "Scheduling PC_INIT");
785 }
786
787 /* Add "AT" to a command, add the cid, dle encode it, send the result to the
788 hardware. */
789 static void send_command(struct cardstate *cs, const char *cmd, int cid,
790 int dle, gfp_t kmallocflags)
791 {
792 size_t cmdlen, buflen;
793 char *cmdpos, *cmdbuf, *cmdtail;
794
795 cmdlen = strlen(cmd);
796 buflen = 11 + cmdlen;
797 if (unlikely(buflen <= cmdlen)) {
798 dev_err(cs->dev, "integer overflow in buflen\n");
799 return;
800 }
801
802 cmdbuf = kmalloc(buflen, kmallocflags);
803 if (unlikely(!cmdbuf)) {
804 dev_err(cs->dev, "out of memory\n");
805 return;
806 }
807
808 cmdpos = cmdbuf + 9;
809 cmdtail = cmdpos + cmdlen;
810 memcpy(cmdpos, cmd, cmdlen);
811
812 if (cid > 0 && cid <= 65535) {
813 do {
814 *--cmdpos = '0' + cid % 10;
815 cid /= 10;
816 ++cmdlen;
817 } while (cid);
818 }
819
820 cmdlen += 2;
821 *--cmdpos = 'T';
822 *--cmdpos = 'A';
823
824 if (dle) {
825 cmdlen += 4;
826 *--cmdpos = '(';
827 *--cmdpos = 0x10;
828 *cmdtail++ = 0x10;
829 *cmdtail++ = ')';
830 }
831
832 cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
833 kfree(cmdbuf);
834 }
835
836 static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
837 {
838 struct at_state_t *at_state;
839 int i;
840 unsigned long flags;
841
842 if (cid == 0)
843 return &cs->at_state;
844
845 for (i = 0; i < cs->channels; ++i)
846 if (cid == cs->bcs[i].at_state.cid)
847 return &cs->bcs[i].at_state;
848
849 spin_lock_irqsave(&cs->lock, flags);
850
851 list_for_each_entry(at_state, &cs->temp_at_states, list)
852 if (cid == at_state->cid) {
853 spin_unlock_irqrestore(&cs->lock, flags);
854 return at_state;
855 }
856
857 spin_unlock_irqrestore(&cs->lock, flags);
858
859 return NULL;
860 }
861
862 static void bchannel_down(struct bc_state *bcs)
863 {
864 if (bcs->chstate & CHS_B_UP) {
865 bcs->chstate &= ~CHS_B_UP;
866 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
867 }
868
869 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
870 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
871 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
872 }
873
874 gigaset_free_channel(bcs);
875
876 gigaset_bcs_reinit(bcs);
877 }
878
879 static void bchannel_up(struct bc_state *bcs)
880 {
881 if (bcs->chstate & CHS_B_UP) {
882 dev_notice(bcs->cs->dev, "%s: B channel already up\n",
883 __func__);
884 return;
885 }
886
887 bcs->chstate |= CHS_B_UP;
888 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
889 }
890
891 static void start_dial(struct at_state_t *at_state, void *data, unsigned seq_index)
892 {
893 struct bc_state *bcs = at_state->bcs;
894 struct cardstate *cs = at_state->cs;
895 int retval;
896 unsigned long flags;
897
898 bcs->chstate |= CHS_NOTIFY_LL;
899
900 spin_lock_irqsave(&cs->lock, flags);
901 if (at_state->seq_index != seq_index) {
902 spin_unlock_irqrestore(&cs->lock, flags);
903 goto error;
904 }
905 spin_unlock_irqrestore(&cs->lock, flags);
906
907 retval = gigaset_isdn_setup_dial(at_state, data);
908 if (retval != 0)
909 goto error;
910
911
912 at_state->pending_commands |= PC_CID;
913 gig_dbg(DEBUG_CMD, "Scheduling PC_CID");
914 cs->commands_pending = 1;
915 return;
916
917 error:
918 at_state->pending_commands |= PC_NOCID;
919 gig_dbg(DEBUG_CMD, "Scheduling PC_NOCID");
920 cs->commands_pending = 1;
921 return;
922 }
923
924 static void start_accept(struct at_state_t *at_state)
925 {
926 struct cardstate *cs = at_state->cs;
927 int retval;
928
929 retval = gigaset_isdn_setup_accept(at_state);
930
931 if (retval == 0) {
932 at_state->pending_commands |= PC_ACCEPT;
933 gig_dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
934 cs->commands_pending = 1;
935 } else {
936 /* error reset */
937 at_state->pending_commands |= PC_HUP;
938 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
939 cs->commands_pending = 1;
940 }
941 }
942
943 static void do_start(struct cardstate *cs)
944 {
945 gigaset_free_channels(cs);
946
947 if (cs->mstate != MS_LOCKED)
948 schedule_init(cs, MS_INIT);
949
950 cs->isdn_up = 1;
951 gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
952 // FIXME: not in locked mode
953 // FIXME 2: only after init sequence
954
955 cs->waiting = 0;
956 wake_up(&cs->waitqueue);
957 }
958
959 static void finish_shutdown(struct cardstate *cs)
960 {
961 if (cs->mstate != MS_LOCKED) {
962 cs->mstate = MS_UNINITIALIZED;
963 cs->mode = M_UNKNOWN;
964 }
965
966 /* Tell the LL that the device is not available .. */
967 if (cs->isdn_up) {
968 cs->isdn_up = 0;
969 gigaset_i4l_cmd(cs, ISDN_STAT_STOP);
970 }
971
972 /* The rest is done by cleanup_cs () in user mode. */
973
974 cs->cmd_result = -ENODEV;
975 cs->waiting = 0;
976 wake_up(&cs->waitqueue);
977 }
978
979 static void do_shutdown(struct cardstate *cs)
980 {
981 gigaset_block_channels(cs);
982
983 if (cs->mstate == MS_READY) {
984 cs->mstate = MS_SHUTDOWN;
985 cs->at_state.pending_commands |= PC_SHUTDOWN;
986 cs->commands_pending = 1;
987 gig_dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN");
988 } else
989 finish_shutdown(cs);
990 }
991
992 static void do_stop(struct cardstate *cs)
993 {
994 unsigned long flags;
995
996 spin_lock_irqsave(&cs->lock, flags);
997 cs->connected = 0;
998 spin_unlock_irqrestore(&cs->lock, flags);
999
1000 do_shutdown(cs);
1001 }
1002
1003 /* Entering cid mode or getting a cid failed:
1004 * try to initialize the device and try again.
1005 *
1006 * channel >= 0: getting cid for the channel failed
1007 * channel < 0: entering cid mode failed
1008 *
1009 * returns 0 on failure
1010 */
1011 static int reinit_and_retry(struct cardstate *cs, int channel)
1012 {
1013 int i;
1014
1015 if (--cs->retry_count <= 0)
1016 return 0;
1017
1018 for (i = 0; i < cs->channels; ++i)
1019 if (cs->bcs[i].at_state.cid > 0)
1020 return 0;
1021
1022 if (channel < 0)
1023 dev_warn(cs->dev,
1024 "Could not enter cid mode. Reinit device and try again.\n");
1025 else {
1026 dev_warn(cs->dev,
1027 "Could not get a call id. Reinit device and try again.\n");
1028 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1029 }
1030 schedule_init(cs, MS_INIT);
1031 return 1;
1032 }
1033
1034 static int at_state_invalid(struct cardstate *cs,
1035 struct at_state_t *test_ptr)
1036 {
1037 unsigned long flags;
1038 unsigned channel;
1039 struct at_state_t *at_state;
1040 int retval = 0;
1041
1042 spin_lock_irqsave(&cs->lock, flags);
1043
1044 if (test_ptr == &cs->at_state)
1045 goto exit;
1046
1047 list_for_each_entry(at_state, &cs->temp_at_states, list)
1048 if (at_state == test_ptr)
1049 goto exit;
1050
1051 for (channel = 0; channel < cs->channels; ++channel)
1052 if (&cs->bcs[channel].at_state == test_ptr)
1053 goto exit;
1054
1055 retval = 1;
1056 exit:
1057 spin_unlock_irqrestore(&cs->lock, flags);
1058 return retval;
1059 }
1060
1061 static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1062 struct at_state_t **p_at_state)
1063 {
1064 int retval;
1065 struct at_state_t *at_state = *p_at_state;
1066
1067 retval = gigaset_isdn_icall(at_state);
1068 switch (retval) {
1069 case ICALL_ACCEPT:
1070 break;
1071 default:
1072 dev_err(cs->dev, "internal error: disposition=%d\n", retval);
1073 /* --v-- fall through --v-- */
1074 case ICALL_IGNORE:
1075 case ICALL_REJECT:
1076 /* hang up actively
1077 * Device doc says that would reject the call.
1078 * In fact it doesn't.
1079 */
1080 at_state->pending_commands |= PC_HUP;
1081 cs->commands_pending = 1;
1082 break;
1083 }
1084 }
1085
1086 static int do_lock(struct cardstate *cs)
1087 {
1088 int mode;
1089 int i;
1090
1091 switch (cs->mstate) {
1092 case MS_UNINITIALIZED:
1093 case MS_READY:
1094 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1095 cs->at_state.pending_commands)
1096 return -EBUSY;
1097
1098 for (i = 0; i < cs->channels; ++i)
1099 if (cs->bcs[i].at_state.pending_commands)
1100 return -EBUSY;
1101
1102 if (!gigaset_get_channels(cs))
1103 return -EBUSY;
1104
1105 break;
1106 case MS_LOCKED:
1107 //retval = -EACCES;
1108 break;
1109 default:
1110 return -EBUSY;
1111 }
1112
1113 mode = cs->mode;
1114 cs->mstate = MS_LOCKED;
1115 cs->mode = M_UNKNOWN;
1116
1117 return mode;
1118 }
1119
1120 static int do_unlock(struct cardstate *cs)
1121 {
1122 if (cs->mstate != MS_LOCKED)
1123 return -EINVAL;
1124
1125 cs->mstate = MS_UNINITIALIZED;
1126 cs->mode = M_UNKNOWN;
1127 gigaset_free_channels(cs);
1128 if (cs->connected)
1129 schedule_init(cs, MS_INIT);
1130
1131 return 0;
1132 }
1133
1134 static void do_action(int action, struct cardstate *cs,
1135 struct bc_state *bcs,
1136 struct at_state_t **p_at_state, char **pp_command,
1137 int *p_genresp, int *p_resp_code,
1138 struct event_t *ev)
1139 {
1140 struct at_state_t *at_state = *p_at_state;
1141 struct at_state_t *at_state2;
1142 unsigned long flags;
1143
1144 int channel;
1145
1146 unsigned char *s, *e;
1147 int i;
1148 unsigned long val;
1149
1150 switch (action) {
1151 case ACT_NOTHING:
1152 break;
1153 case ACT_TIMEOUT:
1154 at_state->waiting = 1;
1155 break;
1156 case ACT_INIT:
1157 cs->at_state.pending_commands &= ~PC_INIT;
1158 cs->cur_at_seq = SEQ_NONE;
1159 cs->mode = M_UNIMODEM;
1160 spin_lock_irqsave(&cs->lock, flags);
1161 if (!cs->cidmode) {
1162 spin_unlock_irqrestore(&cs->lock, flags);
1163 gigaset_free_channels(cs);
1164 cs->mstate = MS_READY;
1165 break;
1166 }
1167 spin_unlock_irqrestore(&cs->lock, flags);
1168 cs->at_state.pending_commands |= PC_CIDMODE;
1169 cs->commands_pending = 1;
1170 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1171 break;
1172 case ACT_FAILINIT:
1173 dev_warn(cs->dev, "Could not initialize the device.\n");
1174 cs->dle = 0;
1175 init_failed(cs, M_UNKNOWN);
1176 cs->cur_at_seq = SEQ_NONE;
1177 break;
1178 case ACT_CONFIGMODE:
1179 init_failed(cs, M_CONFIG);
1180 cs->cur_at_seq = SEQ_NONE;
1181 break;
1182 case ACT_SETDLE1:
1183 cs->dle = 1;
1184 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1185 cs->inbuf[0].inputstate &=
1186 ~(INS_command | INS_DLE_command);
1187 break;
1188 case ACT_SETDLE0:
1189 cs->dle = 0;
1190 cs->inbuf[0].inputstate =
1191 (cs->inbuf[0].inputstate & ~INS_DLE_command)
1192 | INS_command;
1193 break;
1194 case ACT_CMODESET:
1195 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1196 gigaset_free_channels(cs);
1197 cs->mstate = MS_READY;
1198 }
1199 cs->mode = M_CID;
1200 cs->cur_at_seq = SEQ_NONE;
1201 break;
1202 case ACT_UMODESET:
1203 cs->mode = M_UNIMODEM;
1204 cs->cur_at_seq = SEQ_NONE;
1205 break;
1206 case ACT_FAILCMODE:
1207 cs->cur_at_seq = SEQ_NONE;
1208 if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
1209 init_failed(cs, M_UNKNOWN);
1210 break;
1211 }
1212 if (!reinit_and_retry(cs, -1))
1213 schedule_init(cs, MS_RECOVER);
1214 break;
1215 case ACT_FAILUMODE:
1216 cs->cur_at_seq = SEQ_NONE;
1217 schedule_init(cs, MS_RECOVER);
1218 break;
1219 case ACT_HUPMODEM:
1220 /* send "+++" (hangup in unimodem mode) */
1221 if (cs->connected)
1222 cs->ops->write_cmd(cs, "+++", 3, NULL);
1223 break;
1224 case ACT_RING:
1225 /* get fresh AT state structure for new CID */
1226 at_state2 = get_free_channel(cs, ev->parameter);
1227 if (!at_state2) {
1228 dev_warn(cs->dev,
1229 "RING ignored: could not allocate channel structure\n");
1230 break;
1231 }
1232
1233 /* initialize AT state structure
1234 * note that bcs may be NULL if no B channel is free
1235 */
1236 at_state2->ConState = 700;
1237 kfree(at_state2->str_var[STR_NMBR]);
1238 at_state2->str_var[STR_NMBR] = NULL;
1239 kfree(at_state2->str_var[STR_ZCPN]);
1240 at_state2->str_var[STR_ZCPN] = NULL;
1241 kfree(at_state2->str_var[STR_ZBC]);
1242 at_state2->str_var[STR_ZBC] = NULL;
1243 kfree(at_state2->str_var[STR_ZHLC]);
1244 at_state2->str_var[STR_ZHLC] = NULL;
1245 at_state2->int_var[VAR_ZCTP] = -1;
1246
1247 spin_lock_irqsave(&cs->lock, flags);
1248 at_state2->timer_expires = RING_TIMEOUT;
1249 at_state2->timer_active = 1;
1250 spin_unlock_irqrestore(&cs->lock, flags);
1251 break;
1252 case ACT_ICALL:
1253 handle_icall(cs, bcs, p_at_state);
1254 break;
1255 case ACT_FAILSDOWN:
1256 dev_warn(cs->dev, "Could not shut down the device.\n");
1257 /* fall through */
1258 case ACT_FAKESDOWN:
1259 case ACT_SDOWN:
1260 cs->cur_at_seq = SEQ_NONE;
1261 finish_shutdown(cs);
1262 break;
1263 case ACT_CONNECT:
1264 if (cs->onechannel) {
1265 at_state->pending_commands |= PC_DLE1;
1266 cs->commands_pending = 1;
1267 break;
1268 }
1269 bcs->chstate |= CHS_D_UP;
1270 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1271 cs->ops->init_bchannel(bcs);
1272 break;
1273 case ACT_DLE1:
1274 cs->cur_at_seq = SEQ_NONE;
1275 bcs = cs->bcs + cs->curchannel;
1276
1277 bcs->chstate |= CHS_D_UP;
1278 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1279 cs->ops->init_bchannel(bcs);
1280 break;
1281 case ACT_FAKEHUP:
1282 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1283 /* fall through */
1284 case ACT_DISCONNECT:
1285 cs->cur_at_seq = SEQ_NONE;
1286 at_state->cid = -1;
1287 if (bcs && cs->onechannel && cs->dle) {
1288 /* Check for other open channels not needed:
1289 * DLE only used for M10x with one B channel.
1290 */
1291 at_state->pending_commands |= PC_DLE0;
1292 cs->commands_pending = 1;
1293 } else
1294 disconnect(p_at_state);
1295 break;
1296 case ACT_FAKEDLE0:
1297 at_state->int_var[VAR_ZDLE] = 0;
1298 cs->dle = 0;
1299 /* fall through */
1300 case ACT_DLE0:
1301 cs->cur_at_seq = SEQ_NONE;
1302 at_state2 = &cs->bcs[cs->curchannel].at_state;
1303 disconnect(&at_state2);
1304 break;
1305 case ACT_ABORTHUP:
1306 cs->cur_at_seq = SEQ_NONE;
1307 dev_warn(cs->dev, "Could not hang up.\n");
1308 at_state->cid = -1;
1309 if (bcs && cs->onechannel)
1310 at_state->pending_commands |= PC_DLE0;
1311 else
1312 disconnect(p_at_state);
1313 schedule_init(cs, MS_RECOVER);
1314 break;
1315 case ACT_FAILDLE0:
1316 cs->cur_at_seq = SEQ_NONE;
1317 dev_warn(cs->dev, "Could not leave DLE mode.\n");
1318 at_state2 = &cs->bcs[cs->curchannel].at_state;
1319 disconnect(&at_state2);
1320 schedule_init(cs, MS_RECOVER);
1321 break;
1322 case ACT_FAILDLE1:
1323 cs->cur_at_seq = SEQ_NONE;
1324 dev_warn(cs->dev,
1325 "Could not enter DLE mode. Trying to hang up.\n");
1326 channel = cs->curchannel;
1327 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1328 cs->commands_pending = 1;
1329 break;
1330
1331 case ACT_CID: /* got cid; start dialing */
1332 cs->cur_at_seq = SEQ_NONE;
1333 channel = cs->curchannel;
1334 if (ev->parameter > 0 && ev->parameter <= 65535) {
1335 cs->bcs[channel].at_state.cid = ev->parameter;
1336 cs->bcs[channel].at_state.pending_commands |=
1337 PC_DIAL;
1338 cs->commands_pending = 1;
1339 break;
1340 }
1341 /* fall through */
1342 case ACT_FAILCID:
1343 cs->cur_at_seq = SEQ_NONE;
1344 channel = cs->curchannel;
1345 if (!reinit_and_retry(cs, channel)) {
1346 dev_warn(cs->dev,
1347 "Could not get a call ID. Cannot dial.\n");
1348 at_state2 = &cs->bcs[channel].at_state;
1349 disconnect(&at_state2);
1350 }
1351 break;
1352 case ACT_ABORTCID:
1353 cs->cur_at_seq = SEQ_NONE;
1354 at_state2 = &cs->bcs[cs->curchannel].at_state;
1355 disconnect(&at_state2);
1356 break;
1357
1358 case ACT_DIALING:
1359 case ACT_ACCEPTED:
1360 cs->cur_at_seq = SEQ_NONE;
1361 break;
1362
1363 case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL processing */
1364 disconnect(p_at_state);
1365 break;
1366
1367 case ACT_ABORTDIAL: /* error/timeout during dial preparation */
1368 cs->cur_at_seq = SEQ_NONE;
1369 at_state->pending_commands |= PC_HUP;
1370 cs->commands_pending = 1;
1371 break;
1372
1373 case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
1374 case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
1375 case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
1376 at_state->pending_commands |= PC_HUP;
1377 cs->commands_pending = 1;
1378 break;
1379 case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1380 are not handled properly anymore */
1381 at_state->getstring = 1;
1382 break;
1383 case ACT_SETVER:
1384 if (!ev->ptr) {
1385 *p_genresp = 1;
1386 *p_resp_code = RSP_ERROR;
1387 break;
1388 }
1389 s = ev->ptr;
1390
1391 if (!strcmp(s, "OK")) {
1392 *p_genresp = 1;
1393 *p_resp_code = RSP_ERROR;
1394 break;
1395 }
1396
1397 for (i = 0; i < 4; ++i) {
1398 val = simple_strtoul(s, (char **) &e, 10);
1399 if (val > INT_MAX || e == s)
1400 break;
1401 if (i == 3) {
1402 if (*e)
1403 break;
1404 } else if (*e != '.')
1405 break;
1406 else
1407 s = e + 1;
1408 cs->fwver[i] = val;
1409 }
1410 if (i != 4) {
1411 *p_genresp = 1;
1412 *p_resp_code = RSP_ERROR;
1413 break;
1414 }
1415 /*at_state->getstring = 1;*/
1416 cs->gotfwver = 0;
1417 break;
1418 case ACT_GOTVER:
1419 if (cs->gotfwver == 0) {
1420 cs->gotfwver = 1;
1421 gig_dbg(DEBUG_ANY,
1422 "firmware version %02d.%03d.%02d.%02d",
1423 cs->fwver[0], cs->fwver[1],
1424 cs->fwver[2], cs->fwver[3]);
1425 break;
1426 }
1427 /* fall through */
1428 case ACT_FAILVER:
1429 cs->gotfwver = -1;
1430 dev_err(cs->dev, "could not read firmware version.\n");
1431 break;
1432 #ifdef CONFIG_GIGASET_DEBUG
1433 case ACT_ERROR:
1434 *p_genresp = 1;
1435 *p_resp_code = RSP_ERROR;
1436 break;
1437 case ACT_TEST:
1438 {
1439 static int count = 3; //2; //1;
1440 *p_genresp = 1;
1441 *p_resp_code = count ? RSP_ERROR : RSP_OK;
1442 if (count > 0)
1443 --count;
1444 }
1445 break;
1446 #endif
1447 case ACT_DEBUG:
1448 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1449 __func__, ev->type, at_state->ConState);
1450 break;
1451 case ACT_WARN:
1452 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1453 __func__, ev->type, at_state->ConState);
1454 break;
1455 case ACT_ZCAU:
1456 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1457 ev->parameter, at_state->ConState);
1458 break;
1459
1460 /* events from the LL */
1461 case ACT_DIAL:
1462 start_dial(at_state, ev->ptr, ev->parameter);
1463 break;
1464 case ACT_ACCEPT:
1465 start_accept(at_state);
1466 break;
1467 case ACT_PROTO_L2:
1468 gig_dbg(DEBUG_CMD, "set protocol to %u",
1469 (unsigned) ev->parameter);
1470 at_state->bcs->proto2 = ev->parameter;
1471 break;
1472 case ACT_HUP:
1473 at_state->pending_commands |= PC_HUP;
1474 cs->commands_pending = 1;
1475 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
1476 break;
1477
1478 /* hotplug events */
1479 case ACT_STOP:
1480 do_stop(cs);
1481 break;
1482 case ACT_START:
1483 do_start(cs);
1484 break;
1485
1486 /* events from the interface */ // FIXME without ACT_xxxx?
1487 case ACT_IF_LOCK:
1488 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1489 cs->waiting = 0;
1490 wake_up(&cs->waitqueue);
1491 break;
1492 case ACT_IF_VER:
1493 if (ev->parameter != 0)
1494 cs->cmd_result = -EINVAL;
1495 else if (cs->gotfwver != 1) {
1496 cs->cmd_result = -ENOENT;
1497 } else {
1498 memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1499 cs->cmd_result = 0;
1500 }
1501 cs->waiting = 0;
1502 wake_up(&cs->waitqueue);
1503 break;
1504
1505 /* events from the proc file system */ // FIXME without ACT_xxxx?
1506 case ACT_PROC_CIDMODE:
1507 spin_lock_irqsave(&cs->lock, flags);
1508 if (ev->parameter != cs->cidmode) {
1509 cs->cidmode = ev->parameter;
1510 if (ev->parameter) {
1511 cs->at_state.pending_commands |= PC_CIDMODE;
1512 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1513 } else {
1514 cs->at_state.pending_commands |= PC_UMMODE;
1515 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
1516 }
1517 cs->commands_pending = 1;
1518 }
1519 spin_unlock_irqrestore(&cs->lock, flags);
1520 cs->waiting = 0;
1521 wake_up(&cs->waitqueue);
1522 break;
1523
1524 /* events from the hardware drivers */
1525 case ACT_NOTIFY_BC_DOWN:
1526 bchannel_down(bcs);
1527 break;
1528 case ACT_NOTIFY_BC_UP:
1529 bchannel_up(bcs);
1530 break;
1531 case ACT_SHUTDOWN:
1532 do_shutdown(cs);
1533 break;
1534
1535
1536 default:
1537 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1538 *pp_command = at_state->bcs->commands[action - ACT_CMD];
1539 if (!*pp_command) {
1540 *p_genresp = 1;
1541 *p_resp_code = RSP_NULL;
1542 }
1543 } else
1544 dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
1545 }
1546 }
1547
1548 /* State machine to do the calling and hangup procedure */
1549 static void process_event(struct cardstate *cs, struct event_t *ev)
1550 {
1551 struct bc_state *bcs;
1552 char *p_command = NULL;
1553 struct reply_t *rep;
1554 int rcode;
1555 int genresp = 0;
1556 int resp_code = RSP_ERROR;
1557 int sendcid;
1558 struct at_state_t *at_state;
1559 int index;
1560 int curact;
1561 unsigned long flags;
1562
1563 if (ev->cid >= 0) {
1564 at_state = at_state_from_cid(cs, ev->cid);
1565 if (!at_state) {
1566 gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1567 NULL, 0, NULL);
1568 return;
1569 }
1570 } else {
1571 at_state = ev->at_state;
1572 if (at_state_invalid(cs, at_state)) {
1573 gig_dbg(DEBUG_ANY, "event for invalid at_state %p",
1574 at_state);
1575 return;
1576 }
1577 }
1578
1579 gig_dbg(DEBUG_CMD, "connection state %d, event %d",
1580 at_state->ConState, ev->type);
1581
1582 bcs = at_state->bcs;
1583 sendcid = at_state->cid;
1584
1585 /* Setting the pointer to the dial array */
1586 rep = at_state->replystruct;
1587
1588 spin_lock_irqsave(&cs->lock, flags);
1589 if (ev->type == EV_TIMEOUT) {
1590 if (ev->parameter != at_state->timer_index
1591 || !at_state->timer_active) {
1592 ev->type = RSP_NONE; /* old timeout */
1593 gig_dbg(DEBUG_ANY, "old timeout");
1594 } else if (!at_state->waiting)
1595 gig_dbg(DEBUG_ANY, "timeout occurred");
1596 else
1597 gig_dbg(DEBUG_ANY, "stopped waiting");
1598 }
1599 spin_unlock_irqrestore(&cs->lock, flags);
1600
1601 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1602 or at_state->str_var[STR_XXXX], set it */
1603 if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1604 index = ev->type - RSP_VAR;
1605 at_state->int_var[index] = ev->parameter;
1606 } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1607 index = ev->type - RSP_STR;
1608 kfree(at_state->str_var[index]);
1609 at_state->str_var[index] = ev->ptr;
1610 ev->ptr = NULL; /* prevent process_events() from
1611 deallocating ptr */
1612 }
1613
1614 if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1615 at_state->getstring = 0;
1616
1617 /* Search row in dial array which matches modem response and current
1618 constate */
1619 for (;; rep++) {
1620 rcode = rep->resp_code;
1621 if (rcode == RSP_LAST) {
1622 /* found nothing...*/
1623 dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1624 "resp_code %d in ConState %d!\n",
1625 __func__, ev->type, at_state->ConState);
1626 return;
1627 }
1628 if ((rcode == RSP_ANY || rcode == ev->type)
1629 && ((int) at_state->ConState >= rep->min_ConState)
1630 && (rep->max_ConState < 0
1631 || (int) at_state->ConState <= rep->max_ConState)
1632 && (rep->parameter < 0 || rep->parameter == ev->parameter))
1633 break;
1634 }
1635
1636 p_command = rep->command;
1637
1638 at_state->waiting = 0;
1639 for (curact = 0; curact < MAXACT; ++curact) {
1640 /* The row tells us what we should do ..
1641 */
1642 do_action(rep->action[curact], cs, bcs, &at_state, &p_command, &genresp, &resp_code, ev);
1643 if (!at_state)
1644 break; /* may be freed after disconnect */
1645 }
1646
1647 if (at_state) {
1648 /* Jump to the next con-state regarding the array */
1649 if (rep->new_ConState >= 0)
1650 at_state->ConState = rep->new_ConState;
1651
1652 if (genresp) {
1653 spin_lock_irqsave(&cs->lock, flags);
1654 at_state->timer_expires = 0; //FIXME
1655 at_state->timer_active = 0; //FIXME
1656 spin_unlock_irqrestore(&cs->lock, flags);
1657 gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
1658 } else {
1659 /* Send command to modem if not NULL... */
1660 if (p_command/*rep->command*/) {
1661 if (cs->connected)
1662 send_command(cs, p_command,
1663 sendcid, cs->dle,
1664 GFP_ATOMIC);
1665 else
1666 gigaset_add_event(cs, at_state,
1667 RSP_NODEV,
1668 NULL, 0, NULL);
1669 }
1670
1671 spin_lock_irqsave(&cs->lock, flags);
1672 if (!rep->timeout) {
1673 at_state->timer_expires = 0;
1674 at_state->timer_active = 0;
1675 } else if (rep->timeout > 0) { /* new timeout */
1676 at_state->timer_expires = rep->timeout * 10;
1677 at_state->timer_active = 1;
1678 ++at_state->timer_index;
1679 }
1680 spin_unlock_irqrestore(&cs->lock, flags);
1681 }
1682 }
1683 }
1684
1685 static void schedule_sequence(struct cardstate *cs,
1686 struct at_state_t *at_state, int sequence)
1687 {
1688 cs->cur_at_seq = sequence;
1689 gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1690 }
1691
1692 static void process_command_flags(struct cardstate *cs)
1693 {
1694 struct at_state_t *at_state = NULL;
1695 struct bc_state *bcs;
1696 int i;
1697 int sequence;
1698 unsigned long flags;
1699
1700 cs->commands_pending = 0;
1701
1702 if (cs->cur_at_seq) {
1703 gig_dbg(DEBUG_CMD, "not searching scheduled commands: busy");
1704 return;
1705 }
1706
1707 gig_dbg(DEBUG_CMD, "searching scheduled commands");
1708
1709 sequence = SEQ_NONE;
1710
1711 /* clear pending_commands and hangup channels on shutdown */
1712 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1713 cs->at_state.pending_commands &= ~PC_CIDMODE;
1714 for (i = 0; i < cs->channels; ++i) {
1715 bcs = cs->bcs + i;
1716 at_state = &bcs->at_state;
1717 at_state->pending_commands &=
1718 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1719 if (at_state->cid > 0)
1720 at_state->pending_commands |= PC_HUP;
1721 if (at_state->pending_commands & PC_CID) {
1722 at_state->pending_commands |= PC_NOCID;
1723 at_state->pending_commands &= ~PC_CID;
1724 }
1725 }
1726 }
1727
1728 /* clear pending_commands and hangup channels on reset */
1729 if (cs->at_state.pending_commands & PC_INIT) {
1730 cs->at_state.pending_commands &= ~PC_CIDMODE;
1731 for (i = 0; i < cs->channels; ++i) {
1732 bcs = cs->bcs + i;
1733 at_state = &bcs->at_state;
1734 at_state->pending_commands &=
1735 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1736 if (at_state->cid > 0)
1737 at_state->pending_commands |= PC_HUP;
1738 if (cs->mstate == MS_RECOVER) {
1739 if (at_state->pending_commands & PC_CID) {
1740 at_state->pending_commands |= PC_NOCID;
1741 at_state->pending_commands &= ~PC_CID;
1742 }
1743 }
1744 }
1745 }
1746
1747 /* only switch back to unimodem mode, if no commands are pending and no channels are up */
1748 spin_lock_irqsave(&cs->lock, flags);
1749 if (cs->at_state.pending_commands == PC_UMMODE
1750 && !cs->cidmode
1751 && list_empty(&cs->temp_at_states)
1752 && cs->mode == M_CID) {
1753 sequence = SEQ_UMMODE;
1754 at_state = &cs->at_state;
1755 for (i = 0; i < cs->channels; ++i) {
1756 bcs = cs->bcs + i;
1757 if (bcs->at_state.pending_commands ||
1758 bcs->at_state.cid > 0) {
1759 sequence = SEQ_NONE;
1760 break;
1761 }
1762 }
1763 }
1764 spin_unlock_irqrestore(&cs->lock, flags);
1765 cs->at_state.pending_commands &= ~PC_UMMODE;
1766 if (sequence != SEQ_NONE) {
1767 schedule_sequence(cs, at_state, sequence);
1768 return;
1769 }
1770
1771 for (i = 0; i < cs->channels; ++i) {
1772 bcs = cs->bcs + i;
1773 if (bcs->at_state.pending_commands & PC_HUP) {
1774 bcs->at_state.pending_commands &= ~PC_HUP;
1775 if (bcs->at_state.pending_commands & PC_CID) {
1776 /* not yet dialing: PC_NOCID is sufficient */
1777 bcs->at_state.pending_commands |= PC_NOCID;
1778 bcs->at_state.pending_commands &= ~PC_CID;
1779 } else {
1780 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1781 return;
1782 }
1783 }
1784 if (bcs->at_state.pending_commands & PC_NOCID) {
1785 bcs->at_state.pending_commands &= ~PC_NOCID;
1786 cs->curchannel = bcs->channel;
1787 schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1788 return;
1789 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1790 bcs->at_state.pending_commands &= ~PC_DLE0;
1791 cs->curchannel = bcs->channel;
1792 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1793 return;
1794 }
1795 }
1796
1797 list_for_each_entry(at_state, &cs->temp_at_states, list)
1798 if (at_state->pending_commands & PC_HUP) {
1799 at_state->pending_commands &= ~PC_HUP;
1800 schedule_sequence(cs, at_state, SEQ_HUP);
1801 return;
1802 }
1803
1804 if (cs->at_state.pending_commands & PC_INIT) {
1805 cs->at_state.pending_commands &= ~PC_INIT;
1806 cs->dle = 0; //FIXME
1807 cs->inbuf->inputstate = INS_command;
1808 //FIXME reset card state (or -> LOCK0)?
1809 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1810 return;
1811 }
1812 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1813 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1814 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1815 return;
1816 }
1817 if (cs->at_state.pending_commands & PC_CIDMODE) {
1818 cs->at_state.pending_commands &= ~PC_CIDMODE;
1819 if (cs->mode == M_UNIMODEM) {
1820 cs->retry_count = 1;
1821 schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1822 return;
1823 }
1824 }
1825
1826 for (i = 0; i < cs->channels; ++i) {
1827 bcs = cs->bcs + i;
1828 if (bcs->at_state.pending_commands & PC_DLE1) {
1829 bcs->at_state.pending_commands &= ~PC_DLE1;
1830 cs->curchannel = bcs->channel;
1831 schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1832 return;
1833 }
1834 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1835 bcs->at_state.pending_commands &= ~PC_ACCEPT;
1836 schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1837 return;
1838 }
1839 if (bcs->at_state.pending_commands & PC_DIAL) {
1840 bcs->at_state.pending_commands &= ~PC_DIAL;
1841 schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1842 return;
1843 }
1844 if (bcs->at_state.pending_commands & PC_CID) {
1845 switch (cs->mode) {
1846 case M_UNIMODEM:
1847 cs->at_state.pending_commands |= PC_CIDMODE;
1848 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1849 cs->commands_pending = 1;
1850 return;
1851 #ifdef GIG_MAYINITONDIAL
1852 case M_UNKNOWN:
1853 schedule_init(cs, MS_INIT);
1854 return;
1855 #endif
1856 }
1857 bcs->at_state.pending_commands &= ~PC_CID;
1858 cs->curchannel = bcs->channel;
1859 #ifdef GIG_RETRYCID
1860 cs->retry_count = 2;
1861 #else
1862 cs->retry_count = 1;
1863 #endif
1864 schedule_sequence(cs, &cs->at_state, SEQ_CID);
1865 return;
1866 }
1867 }
1868 }
1869
1870 static void process_events(struct cardstate *cs)
1871 {
1872 struct event_t *ev;
1873 unsigned head, tail;
1874 int i;
1875 int check_flags = 0;
1876 int was_busy;
1877 unsigned long flags;
1878
1879 spin_lock_irqsave(&cs->ev_lock, flags);
1880 head = cs->ev_head;
1881
1882 for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1883 tail = cs->ev_tail;
1884 if (tail == head) {
1885 if (!check_flags && !cs->commands_pending)
1886 break;
1887 check_flags = 0;
1888 spin_unlock_irqrestore(&cs->ev_lock, flags);
1889 process_command_flags(cs);
1890 spin_lock_irqsave(&cs->ev_lock, flags);
1891 tail = cs->ev_tail;
1892 if (tail == head) {
1893 if (!cs->commands_pending)
1894 break;
1895 continue;
1896 }
1897 }
1898
1899 ev = cs->events + head;
1900 was_busy = cs->cur_at_seq != SEQ_NONE;
1901 spin_unlock_irqrestore(&cs->ev_lock, flags);
1902 process_event(cs, ev);
1903 spin_lock_irqsave(&cs->ev_lock, flags);
1904 kfree(ev->ptr);
1905 ev->ptr = NULL;
1906 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1907 check_flags = 1;
1908
1909 head = (head + 1) % MAX_EVENTS;
1910 cs->ev_head = head;
1911 }
1912
1913 spin_unlock_irqrestore(&cs->ev_lock, flags);
1914
1915 if (i == 2 * MAX_EVENTS) {
1916 dev_err(cs->dev,
1917 "infinite loop in process_events; aborting.\n");
1918 }
1919 }
1920
1921 /* tasklet scheduled on any event received from the Gigaset device
1922 * parameter:
1923 * data ISDN controller state structure
1924 */
1925 void gigaset_handle_event(unsigned long data)
1926 {
1927 struct cardstate *cs = (struct cardstate *) data;
1928
1929 /* handle incoming data on control/common channel */
1930 if (cs->inbuf->head != cs->inbuf->tail) {
1931 gig_dbg(DEBUG_INTR, "processing new data");
1932 cs->ops->handle_input(cs->inbuf);
1933 }
1934
1935 process_events(cs);
1936 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree