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[PATCH] isdn4linux: Gigaset base driver: improve error recovery
[deliverable/linux.git] / drivers / isdn / gigaset / ev-layer.c
CommitLineData
14fa73a7
HL		 1/*
2 * Stuff used by all variants of the driver
3 *
70440cf2 4 * Copyright (c) 2001 by Stefan Eilers,
14fa73a7
HL		 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 * =====================================================================
14fa73a7
HL		 14 */
15
16#include "gigaset.h"
17
18/* ========================================================== */
19/* bit masks for pending commands */
917f5085
TS		 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
14fa73a7
HL		 31
32/* types of modem responses */
917f5085
TS		 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
14fa73a7
HL		 40
41/* Possible ASCII responses */
917f5085
TS		 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
14fa73a7
HL		 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
917f5085 111#define ACT_CONNTIMEOUT 23
14fa73a7
HL		 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
917f5085
TS		 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
14fa73a7
HL		 145#define ACT_CMD 100
146
147/* at command sequences */
917f5085
TS		 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
14fa73a7
HL		 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
163struct reply_t gigaset_tab_nocid_m10x[]= /* with dle mode */
164{
165 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
166
167 /* initialize device, set cid mode if possible */
168 //{RSP_INIT, -1, -1,100, 900, 0, {ACT_TEST}},
169 //{RSP_ERROR, 900,900, -1, 0, 0, {ACT_FAILINIT}},
170 //{RSP_OK, 900,900, -1, 100, INIT_TIMEOUT,
171 // {ACT_TIMEOUT}},
172
173 {RSP_INIT, -1, -1,SEQ_INIT, 100, INIT_TIMEOUT,
784d5858 174 {ACT_TIMEOUT}}, /* wait until device is ready */
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HL		 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,
784d5858
TS		 189 ACT_HUPMODEM,
190 ACT_TIMEOUT}}, /* still timeout => connection in unimodem mode? */
14fa73a7
HL		 191 {EV_TIMEOUT, 105,105, -1, 103, 5, {0}, "Z\r"},
192
193 {RSP_ERROR, 102,102, -1, 107, 5, {0}, "^GETPRE\r"}, /* ERROR on ATZ => maybe in config mode? */
194 {RSP_OK, 107,107, -1, 0, 0, {ACT_CONFIGMODE}},
195 {RSP_ERROR, 107,107, -1, 0, 0, {ACT_FAILINIT}},
196 {EV_TIMEOUT, 107,107, -1, 0, 0, {ACT_FAILINIT}},
197
198 {RSP_ERROR, 103,103, -1, 0, 0, {ACT_FAILINIT}},
199 {EV_TIMEOUT, 103,103, -1, 0, 0, {ACT_FAILINIT}},
200
201 {RSP_STRING, 120,120, -1, 121,-1, {ACT_SETVER}},
202
203 {EV_TIMEOUT, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}},
204 {RSP_ERROR, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}},
205 {RSP_OK, 121,121, -1, 0, 0, {ACT_GOTVER, ACT_INIT}},
206#if 0
207 {EV_TIMEOUT, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"},
208 {RSP_ERROR, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"},
209 {RSP_OK, 121,121, -1, 130, 5, {ACT_GOTVER}, "^SGCI=1\r"},
210
211 {RSP_OK, 130,130, -1, 0, 0, {ACT_INIT}},
212 {RSP_ERROR, 130,130, -1, 0, 0, {ACT_FAILINIT}},
213 {EV_TIMEOUT, 130,130, -1, 0, 0, {ACT_FAILINIT}},
214#endif
215
216 /* leave dle mode */
217 {RSP_INIT, 0, 0,SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"},
218 {RSP_OK, 201,201, -1, 202,-1},
219 //{RSP_ZDLE, 202,202, 0, 202, 0, {ACT_ERROR}},//DELETE
220 {RSP_ZDLE, 202,202, 0, 0, 0, {ACT_DLE0}},
221 {RSP_NODEV, 200,249, -1, 0, 0, {ACT_FAKEDLE0}},
222 {RSP_ERROR, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
223 {EV_TIMEOUT, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
224
225 /* enter dle mode */
226 {RSP_INIT, 0, 0,SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"},
227 {RSP_OK, 251,251, -1, 252,-1},
228 {RSP_ZDLE, 252,252, 1, 0, 0, {ACT_DLE1}},
229 {RSP_ERROR, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
230 {EV_TIMEOUT, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
231
232 /* incoming call */
233 {RSP_RING, -1, -1, -1, -1,-1, {ACT_RING}},
234
235 /* get cid */
236 //{RSP_INIT, 0, 0,300, 901, 0, {ACT_TEST}},
237 //{RSP_ERROR, 901,901, -1, 0, 0, {ACT_FAILCID}},
238 //{RSP_OK, 901,901, -1, 301, 5, {0}, "^SGCI?\r"},
239
240 {RSP_INIT, 0, 0,SEQ_CID, 301, 5, {0}, "^SGCI?\r"},
241 {RSP_OK, 301,301, -1, 302,-1},
242 {RSP_ZGCI, 302,302, -1, 0, 0, {ACT_CID}},
243 {RSP_ERROR, 301,349, -1, 0, 0, {ACT_FAILCID}},
244 {EV_TIMEOUT, 301,349, -1, 0, 0, {ACT_FAILCID}},
245
246 /* enter cid mode */
247 {RSP_INIT, 0, 0,SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"},
248 {RSP_OK, 150,150, -1, 0, 0, {ACT_CMODESET}},
249 {RSP_ERROR, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
250 {EV_TIMEOUT, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
251
252 /* leave cid mode */
253 //{RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "^SGCI=0\r"},
254 {RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "Z\r"},
255 {RSP_OK, 160,160, -1, 0, 0, {ACT_UMODESET}},
256 {RSP_ERROR, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
257 {EV_TIMEOUT, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
258
259 /* abort getting cid */
260 {RSP_INIT, 0, 0,SEQ_NOCID, 0, 0, {ACT_ABORTCID}},
261
262 /* reset */
263#if 0
264 {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 503, 5, {0}, "^SGCI=0\r"},
265 {RSP_OK, 503,503, -1, 504, 5, {0}, "Z\r"},
266#endif
267 {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"},
268 {RSP_OK, 504,504, -1, 0, 0, {ACT_SDOWN}},
269 {RSP_ERROR, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
270 {EV_TIMEOUT, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
271 {RSP_NODEV, 501,599, -1, 0, 0, {ACT_FAKESDOWN}},
272
273 {EV_PROC_CIDMODE,-1, -1, -1, -1,-1, {ACT_PROC_CIDMODE}}, //FIXME
274 {EV_IF_LOCK, -1, -1, -1, -1,-1, {ACT_IF_LOCK}}, //FIXME
275 {EV_IF_VER, -1, -1, -1, -1,-1, {ACT_IF_VER}}, //FIXME
276 {EV_START, -1, -1, -1, -1,-1, {ACT_START}}, //FIXME
277 {EV_STOP, -1, -1, -1, -1,-1, {ACT_STOP}}, //FIXME
278 {EV_SHUTDOWN, -1, -1, -1, -1,-1, {ACT_SHUTDOWN}}, //FIXME
279
280 /* misc. */
281 {RSP_EMPTY, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
282 {RSP_ZCFGT, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
283 {RSP_ZCFG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
284 {RSP_ZLOG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
285 {RSP_ZMWI, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
286 {RSP_ZABINFO, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
287 {RSP_ZSMLSTCHG,-1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
288
289 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
290 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
291 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
292 {RSP_LAST}
293};
294
295// 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring, 400: hup, 750: accepted icall
296struct reply_t gigaset_tab_cid_m10x[] = /* for M10x */
297{
298 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
299
300 /* dial */
301 {EV_DIAL, -1, -1, -1, -1,-1, {ACT_DIAL}}, //FIXME
302 {RSP_INIT, 0, 0,SEQ_DIAL, 601, 5, {ACT_CMD+AT_BC}},
303 {RSP_OK, 601,601, -1, 602, 5, {ACT_CMD+AT_HLC}},
304 {RSP_NULL, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
305 {RSP_OK, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
306 {RSP_OK, 603,603, -1, 604, 5, {ACT_CMD+AT_TYPE}},
307 {RSP_OK, 604,604, -1, 605, 5, {ACT_CMD+AT_MSN}},
308 {RSP_OK, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
309 {RSP_NULL, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
310 {RSP_OK, 606,606, -1, 607, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
311 {RSP_OK, 607,607, -1, 608,-1},
312 //{RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 608, 0, {ACT_ERROR}},//DELETE
313 {RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 609, 5, {ACT_CMD+AT_DIAL}},
314 {RSP_OK, 609,609, -1, 650, 0, {ACT_DIALING}},
315
316 {RSP_ZVLS, 608,608, 17, -1,-1, {ACT_DEBUG}},
317 {RSP_ZCTP, 609,609, -1, -1,-1, {ACT_DEBUG}},
318 {RSP_ZCPN, 609,609, -1, -1,-1, {ACT_DEBUG}},
319 {RSP_ERROR, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
320 {EV_TIMEOUT, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
321
322 /* dialing */
323 {RSP_ZCTP, 650,650, -1, -1,-1, {ACT_DEBUG}},
324 {RSP_ZCPN, 650,650, -1, -1,-1, {ACT_DEBUG}},
325 {RSP_ZSAU, 650,650,ZSAU_CALL_DELIVERED, -1,-1, {ACT_DEBUG}}, /* some devices don't send this */
326
327 /* connection established */
328 {RSP_ZSAU, 650,650,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
329 {RSP_ZSAU, 750,750,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
330
331 {EV_BC_OPEN, 800,800, -1, 800,-1, {ACT_NOTIFY_BC_UP}}, //FIXME new constate + timeout
332
333 /* remote hangup */
334 {RSP_ZSAU, 650,650,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT}},
335 {RSP_ZSAU, 750,750,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
336 {RSP_ZSAU, 800,800,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
337
338 /* hangup */
339 {EV_HUP, -1, -1, -1, -1,-1, {ACT_HUP}}, //FIXME
340 {RSP_INIT, -1, -1,SEQ_HUP, 401, 5, {0}, "+VLS=0\r"}, /* hang up */ //-1,-1?
341 {RSP_OK, 401,401, -1, 402, 5},
342 {RSP_ZVLS, 402,402, 0, 403, 5},
343 {RSP_ZSAU, 403,403,ZSAU_DISCONNECT_REQ, -1,-1, {ACT_DEBUG}}, /* if not remote hup */
344 //{RSP_ZSAU, 403,403,ZSAU_NULL, 401, 0, {ACT_ERROR}}, //DELETE//FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
345 {RSP_ZSAU, 403,403,ZSAU_NULL, 0, 0, {ACT_DISCONNECT}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
346 {RSP_NODEV, 401,403, -1, 0, 0, {ACT_FAKEHUP}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
347 {RSP_ERROR, 401,401, -1, 0, 0, {ACT_ABORTHUP}},
348 {EV_TIMEOUT, 401,403, -1, 0, 0, {ACT_ABORTHUP}},
349
350 {EV_BC_CLOSED, 0, 0, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME new constate + timeout
351
352 /* ring */
353 {RSP_ZBC, 700,700, -1, -1,-1, {0}},
354 {RSP_ZHLC, 700,700, -1, -1,-1, {0}},
355 {RSP_NMBR, 700,700, -1, -1,-1, {0}},
356 {RSP_ZCPN, 700,700, -1, -1,-1, {0}},
357 {RSP_ZCTP, 700,700, -1, -1,-1, {0}},
358 {EV_TIMEOUT, 700,700, -1, 720,720, {ACT_ICALL}},
359 {EV_BC_CLOSED,720,720, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}},
360
361 /*accept icall*/
362 {EV_ACCEPT, -1, -1, -1, -1,-1, {ACT_ACCEPT}}, //FIXME
363 {RSP_INIT, 720,720,SEQ_ACCEPT, 721, 5, {ACT_CMD+AT_PROTO}},
364 {RSP_OK, 721,721, -1, 722, 5, {ACT_CMD+AT_ISO}},
365 {RSP_OK, 722,722, -1, 723, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
366 {RSP_OK, 723,723, -1, 724, 5, {0}},
367 {RSP_ZVLS, 724,724, 17, 750,50, {ACT_ACCEPTED}},
368 {RSP_ERROR, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
369 {EV_TIMEOUT, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
370 {RSP_ZSAU, 700,729,ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT}},
371 {RSP_ZSAU, 700,729,ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT}},
372 {RSP_ZSAU, 700,729,ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT}},
373
374 {EV_TIMEOUT, 750,750, -1, 0, 0, {ACT_CONNTIMEOUT}},
375
73a88814
TS		 376 /* B channel closed (general case) */
377 {EV_BC_CLOSED, -1, -1, -1, -1,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME
378
14fa73a7
HL		 379 /* misc. */
380 {EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME
381
382 {RSP_ZCON, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
383 {RSP_ZCCR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
384 {RSP_ZAOC, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
385 {RSP_ZCSTR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
386
387 {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
388 {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
389 {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
390 {RSP_LAST}
391};
392
393
394#if 0
917f5085 395static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME
14fa73a7
HL		 396{
397 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
398
399 {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
400 {RSP_LAST,0,0,0,0,0,0}
401};
402
917f5085 403static struct reply_t tab_cid[] = /* no dle mode */ //FIXME
14fa73a7
HL		 404{
405 /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
406
407 {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
408 {RSP_LAST,0,0,0,0,0,0}
409};
410#endif
411
412static struct resp_type_t resp_type[]=
413{
917f5085
TS		 414 /*{"", RSP_EMPTY, RT_NOTHING},*/
415 {"OK", RSP_OK, RT_NOTHING},
416 {"ERROR", RSP_ERROR, RT_NOTHING},
417 {"ZSAU", RSP_ZSAU, RT_ZSAU},
418 {"ZCAU", RSP_ZCAU, RT_ZCAU},
419 {"RING", RSP_RING, RT_RING},
420 {"ZGCI", RSP_ZGCI, RT_NUMBER},
421 {"ZVLS", RSP_ZVLS, RT_NUMBER},
422 {"ZCTP", RSP_ZCTP, RT_NUMBER},
423 {"ZDLE", RSP_ZDLE, RT_NUMBER},
424 {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
425 {"ZCCR", RSP_ZCCR, RT_NUMBER},
426 {"ZMWI", RSP_ZMWI, RT_NUMBER},
427 {"ZHLC", RSP_ZHLC, RT_STRING},
428 {"ZBC", RSP_ZBC, RT_STRING},
429 {"NMBR", RSP_NMBR, RT_STRING},
430 {"ZCPN", RSP_ZCPN, RT_STRING},
431 {"ZCON", RSP_ZCON, RT_STRING},
432 {"ZAOC", RSP_ZAOC, RT_STRING},
433 {"ZCSTR", RSP_ZCSTR, RT_STRING},
434 {"ZCFG", RSP_ZCFG, RT_HEX},
435 {"ZLOG", RSP_ZLOG, RT_NOTHING},
436 {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
437 {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
14fa73a7
HL		 438 {NULL,0,0}
439};
440
441/*
442 * Get integer from char-pointer
443 */
444static int isdn_getnum(char *p)
445{
446 int v = -1;
447
784d5858 448 gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
14fa73a7
HL		 449
450 while (*p >= '0' && *p <= '9')
451 v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
452 if (*p)
453 v = -1; /* invalid Character */
454 return v;
455}
456
457/*
458 * Get integer from char-pointer
459 */
460static int isdn_gethex(char *p)
461{
462 int v = 0;
463 int c;
464
784d5858 465 gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
14fa73a7
HL		 466
467 if (!*p)
468 return -1;
469
470 do {
471 if (v > (INT_MAX - 15) / 16)
472 return -1;
473 c = *p;
474 if (c >= '0' && c <= '9')
475 c -= '0';
476 else if (c >= 'a' && c <= 'f')
477 c -= 'a' - 10;
478 else if (c >= 'A' && c <= 'F')
479 c -= 'A' - 10;
480 else
481 return -1;
482 v = v * 16 + c;
483 } while (*++p);
484
485 return v;
486}
487
14fa73a7
HL		 488/* retrieve CID from parsed response
489 * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
490 */
491static int cid_of_response(char *s)
492{
493 int cid;
494
495 if (s[-1] != ';')
496 return 0; /* no CID separator */
497 cid = isdn_getnum(s);
498 if (cid < 0)
499 return 0; /* CID not numeric */
500 if (cid < 1 || cid > 65535)
501 return -1; /* CID out of range */
502 return cid;
503 //FIXME is ;<digit>+ at end of non-CID response really impossible?
504}
505
506/* This function will be called via task queue from the callback handler.
507 * We received a modem response and have to handle it..
508 */
509void gigaset_handle_modem_response(struct cardstate *cs)
510{
511 unsigned char *argv[MAX_REC_PARAMS + 1];
512 int params;
513 int i, j;
514 struct resp_type_t *rt;
515 int curarg;
516 unsigned long flags;
517 unsigned next, tail, head;
518 struct event_t *event;
519 int resp_code;
520 int param_type;
521 int abort;
522 size_t len;
523 int cid;
524 int rawstring;
525
14fa73a7
HL		 526 len = cs->cbytes;
527 if (!len) {
528 /* ignore additional LFs/CRs (M10x config mode or cx100) */
784d5858 529 gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
14fa73a7
HL		 530 return;
531 }
532 cs->respdata[len] = 0;
784d5858 533 gig_dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
14fa73a7
HL		 534 argv[0] = cs->respdata;
535 params = 1;
536 if (cs->at_state.getstring) {
537 /* getstring only allowed without cid at the moment */
538 cs->at_state.getstring = 0;
539 rawstring = 1;
540 cid = 0;
541 } else {
542 /* parse line */
543 for (i = 0; i < len; i++)
544 switch (cs->respdata[i]) {
545 case ';':
546 case ',':
547 case '=':
548 if (params > MAX_REC_PARAMS) {
784d5858
TS		 549 dev_warn(cs->dev,
550 "too many parameters in response\n");
14fa73a7
HL		 551 /* need last parameter (might be CID) */
552 params--;
553 }
554 argv[params++] = cs->respdata + i + 1;
555 }
556
557 rawstring = 0;
558 cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
559 if (cid < 0) {
560 gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
784d5858 561 NULL, 0, NULL);
14fa73a7
HL		 562 return;
563 }
564
565 for (j = 1; j < params; ++j)
566 argv[j][-1] = 0;
567
784d5858 568 gig_dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
14fa73a7
HL		 569 if (cid) {
570 --params;
784d5858 571 gig_dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
14fa73a7 572 }
784d5858 573 gig_dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
14fa73a7 574 for (j = 1; j < params; j++)
784d5858 575 gig_dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
14fa73a7
HL		 576 }
577
578 spin_lock_irqsave(&cs->ev_lock, flags);
69049cc8
TS		 579 head = cs->ev_head;
580 tail = cs->ev_tail;
14fa73a7
HL		 581
582 abort = 1;
583 curarg = 0;
584 while (curarg < params) {
585 next = (tail + 1) % MAX_EVENTS;
586 if (unlikely(next == head)) {
784d5858 587 dev_err(cs->dev, "event queue full\n");
14fa73a7
HL		 588 break;
589 }
590
591 event = cs->events + tail;
592 event->at_state = NULL;
593 event->cid = cid;
594 event->ptr = NULL;
595 event->arg = NULL;
596 tail = next;
597
598 if (rawstring) {
599 resp_code = RSP_STRING;
600 param_type = RT_STRING;
601 } else {
602 for (rt = resp_type; rt->response; ++rt)
603 if (!strcmp(argv[curarg], rt->response))
604 break;
605
606 if (!rt->response) {
607 event->type = RSP_UNKNOWN;
784d5858
TS		 608 dev_warn(cs->dev,
609 "unknown modem response: %s\n",
610 argv[curarg]);
14fa73a7
HL		 611 break;
612 }
613
614 resp_code = rt->resp_code;
615 param_type = rt->type;
616 ++curarg;
617 }
618
619 event->type = resp_code;
620
621 switch (param_type) {
622 case RT_NOTHING:
623 break;
624 case RT_RING:
625 if (!cid) {
784d5858
TS		 626 dev_err(cs->dev,
627 "received RING without CID!\n");
14fa73a7
HL		 628 event->type = RSP_INVAL;
629 abort = 1;
630 } else {
631 event->cid = 0;
632 event->parameter = cid;
633 abort = 0;
634 }
635 break;
636 case RT_ZSAU:
637 if (curarg >= params) {
638 event->parameter = ZSAU_NONE;
639 break;
640 }
641 if (!strcmp(argv[curarg], "OUTGOING_CALL_PROCEEDING"))
642 event->parameter = ZSAU_OUTGOING_CALL_PROCEEDING;
643 else if (!strcmp(argv[curarg], "CALL_DELIVERED"))
644 event->parameter = ZSAU_CALL_DELIVERED;
645 else if (!strcmp(argv[curarg], "ACTIVE"))
646 event->parameter = ZSAU_ACTIVE;
647 else if (!strcmp(argv[curarg], "DISCONNECT_IND"))
648 event->parameter = ZSAU_DISCONNECT_IND;
649 else if (!strcmp(argv[curarg], "NULL"))
650 event->parameter = ZSAU_NULL;
651 else if (!strcmp(argv[curarg], "DISCONNECT_REQ"))
652 event->parameter = ZSAU_DISCONNECT_REQ;
653 else {
654 event->parameter = ZSAU_UNKNOWN;
784d5858
TS		 655 dev_warn(cs->dev,
656 "%s: unknown parameter %s after ZSAU\n",
657 __func__, argv[curarg]);
14fa73a7
HL		 658 }
659 ++curarg;
660 break;
661 case RT_STRING:
662 if (curarg < params) {
784d5858
TS		 663 event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
664 if (!event->ptr)
665 dev_err(cs->dev, "out of memory\n");
14fa73a7
HL		 666 ++curarg;
667 }
668#ifdef CONFIG_GIGASET_DEBUG
669 if (!event->ptr)
784d5858 670 gig_dbg(DEBUG_CMD, "string==NULL");
14fa73a7 671 else
784d5858
TS		 672 gig_dbg(DEBUG_CMD, "string==%s",
673 (char *) event->ptr);
14fa73a7
HL		 674#endif
675 break;
676 case RT_ZCAU:
677 event->parameter = -1;
678 if (curarg + 1 < params) {
679 i = isdn_gethex(argv[curarg]);
680 j = isdn_gethex(argv[curarg + 1]);
681 if (i >= 0 && i < 256 && j >= 0 && j < 256)
682 event->parameter = (unsigned) i << 8
784d5858 683 | j;
14fa73a7
HL		 684 curarg += 2;
685 } else
686 curarg = params - 1;
687 break;
688 case RT_NUMBER:
689 case RT_HEX:
690 if (curarg < params) {
691 if (param_type == RT_HEX)
692 event->parameter =
693 isdn_gethex(argv[curarg]);
694 else
695 event->parameter =
696 isdn_getnum(argv[curarg]);
697 ++curarg;
698 } else
699 event->parameter = -1;
700#ifdef CONFIG_GIGASET_DEBUG
784d5858 701 gig_dbg(DEBUG_CMD, "parameter==%d", event->parameter);
14fa73a7
HL		 702#endif
703 break;
704 }
705
706 if (resp_code == RSP_ZDLE)
707 cs->dle = event->parameter;
708
709 if (abort)
710 break;
711 }
712
69049cc8 713 cs->ev_tail = tail;
14fa73a7
HL		 714 spin_unlock_irqrestore(&cs->ev_lock, flags);
715
716 if (curarg != params)
784d5858
TS		 717 gig_dbg(DEBUG_ANY,
718 "invalid number of processed parameters: %d/%d",
719 curarg, params);
14fa73a7
HL		 720}
721EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
722
723/* disconnect
724 * process closing of connection associated with given AT state structure
725 */
726static void disconnect(struct at_state_t **at_state_p)
727{
728 unsigned long flags;
d48c7784
TS		 729 struct bc_state *bcs = (*at_state_p)->bcs;
730 struct cardstate *cs = (*at_state_p)->cs;
14fa73a7 731
69049cc8
TS		 732 spin_lock_irqsave(&cs->lock, flags);
733 ++(*at_state_p)->seq_index;
14fa73a7
HL		 734
735 /* revert to selected idle mode */
69049cc8 736 if (!cs->cidmode) {
14fa73a7
HL		 737 cs->at_state.pending_commands |= PC_UMMODE;
738 atomic_set(&cs->commands_pending, 1); //FIXME
784d5858 739 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
14fa73a7 740 }
69049cc8 741 spin_unlock_irqrestore(&cs->lock, flags);
14fa73a7
HL		 742
743 if (bcs) {
744 /* B channel assigned: invoke hardware specific handler */
745 cs->ops->close_bchannel(bcs);
746 } else {
747 /* no B channel assigned: just deallocate */
748 spin_lock_irqsave(&cs->lock, flags);
749 list_del(&(*at_state_p)->list);
750 kfree(*at_state_p);
751 *at_state_p = NULL;
752 spin_unlock_irqrestore(&cs->lock, flags);
753 }
754}
755
756/* get_free_channel
757 * get a free AT state structure: either one of those associated with the
758 * B channels of the Gigaset device, or if none of those is available,
759 * a newly allocated one with bcs=NULL
760 * The structure should be freed by calling disconnect() after use.
761 */
762static inline struct at_state_t *get_free_channel(struct cardstate *cs,
784d5858 763 int cid)
14fa73a7
HL		 764/* cids: >0: siemens-cid
765 0: without cid
766 -1: no cid assigned yet
767*/
768{
769 unsigned long flags;
770 int i;
771 struct at_state_t *ret;
772
773 for (i = 0; i < cs->channels; ++i)
774 if (gigaset_get_channel(cs->bcs + i)) {
775 ret = &cs->bcs[i].at_state;
776 ret->cid = cid;
777 return ret;
778 }
779
780 spin_lock_irqsave(&cs->lock, flags);
781 ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
782 if (ret) {
783 gigaset_at_init(ret, NULL, cs, cid);
784 list_add(&ret->list, &cs->temp_at_states);
785 }
786 spin_unlock_irqrestore(&cs->lock, flags);
787 return ret;
788}
789
790static void init_failed(struct cardstate *cs, int mode)
791{
792 int i;
793 struct at_state_t *at_state;
794
795 cs->at_state.pending_commands &= ~PC_INIT;
796 atomic_set(&cs->mode, mode);
797 atomic_set(&cs->mstate, MS_UNINITIALIZED);
798 gigaset_free_channels(cs);
799 for (i = 0; i < cs->channels; ++i) {
800 at_state = &cs->bcs[i].at_state;
801 if (at_state->pending_commands & PC_CID) {
802 at_state->pending_commands &= ~PC_CID;
803 at_state->pending_commands |= PC_NOCID;
804 atomic_set(&cs->commands_pending, 1);
805 }
806 }
807}
808
809static void schedule_init(struct cardstate *cs, int state)
810{
811 if (cs->at_state.pending_commands & PC_INIT) {
784d5858 812 gig_dbg(DEBUG_CMD, "not scheduling PC_INIT again");
14fa73a7
HL		 813 return;
814 }
815 atomic_set(&cs->mstate, state);
816 atomic_set(&cs->mode, M_UNKNOWN);
817 gigaset_block_channels(cs);
818 cs->at_state.pending_commands |= PC_INIT;
819 atomic_set(&cs->commands_pending, 1);
784d5858 820 gig_dbg(DEBUG_CMD, "Scheduling PC_INIT");
14fa73a7
HL		 821}
822
917f5085
TS		 823/* Add "AT" to a command, add the cid, dle encode it, send the result to the
824 hardware. */
14fa73a7 825static void send_command(struct cardstate *cs, const char *cmd, int cid,
784d5858 826 int dle, gfp_t kmallocflags)
14fa73a7
HL		 827{
828 size_t cmdlen, buflen;
829 char *cmdpos, *cmdbuf, *cmdtail;
830
831 cmdlen = strlen(cmd);
832 buflen = 11 + cmdlen;
784d5858
TS		 833 if (unlikely(buflen <= cmdlen)) {
834 dev_err(cs->dev, "integer overflow in buflen\n");
835 return;
836 }
14fa73a7 837
784d5858
TS		 838 cmdbuf = kmalloc(buflen, kmallocflags);
839 if (unlikely(!cmdbuf)) {
840 dev_err(cs->dev, "out of memory\n");
841 return;
842 }
14fa73a7 843
784d5858
TS		 844 cmdpos = cmdbuf + 9;
845 cmdtail = cmdpos + cmdlen;
846 memcpy(cmdpos, cmd, cmdlen);
14fa73a7 847
784d5858
TS		 848 if (cid > 0 && cid <= 65535) {
849 do {
850 *--cmdpos = '0' + cid % 10;
851 cid /= 10;
852 ++cmdlen;
853 } while (cid);
854 }
14fa73a7 855
784d5858
TS		 856 cmdlen += 2;
857 *--cmdpos = 'T';
858 *--cmdpos = 'A';
859
860 if (dle) {
861 cmdlen += 4;
862 *--cmdpos = '(';
863 *--cmdpos = 0x10;
864 *cmdtail++ = 0x10;
865 *cmdtail++ = ')';
866 }
867
868 cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
869 kfree(cmdbuf);
14fa73a7
HL		 870}
871
872static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
873{
874 struct at_state_t *at_state;
875 int i;
876 unsigned long flags;
877
878 if (cid == 0)
879 return &cs->at_state;
880
881 for (i = 0; i < cs->channels; ++i)
882 if (cid == cs->bcs[i].at_state.cid)
883 return &cs->bcs[i].at_state;
884
885 spin_lock_irqsave(&cs->lock, flags);
886
887 list_for_each_entry(at_state, &cs->temp_at_states, list)
888 if (cid == at_state->cid) {
889 spin_unlock_irqrestore(&cs->lock, flags);
890 return at_state;
891 }
892
893 spin_unlock_irqrestore(&cs->lock, flags);
894
895 return NULL;
896}
897
898static void bchannel_down(struct bc_state *bcs)
899{
14fa73a7
HL		 900 if (bcs->chstate & CHS_B_UP) {
901 bcs->chstate &= ~CHS_B_UP;
902 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
903 }
904
905 if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
906 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
907 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
908 }
909
910 gigaset_free_channel(bcs);
911
912 gigaset_bcs_reinit(bcs);
913}
914
915static void bchannel_up(struct bc_state *bcs)
916{
14fa73a7 917 if (!(bcs->chstate & CHS_D_UP)) {
784d5858 918 dev_notice(bcs->cs->dev, "%s: D channel not up\n", __func__);
14fa73a7
HL		 919 bcs->chstate |= CHS_D_UP;
920 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
921 }
922
923 if (bcs->chstate & CHS_B_UP) {
784d5858
TS		 924 dev_notice(bcs->cs->dev, "%s: B channel already up\n",
925 __func__);
14fa73a7
HL		 926 return;
927 }
928
929 bcs->chstate |= CHS_B_UP;
930 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
931}
932
69049cc8 933static void start_dial(struct at_state_t *at_state, void *data, unsigned seq_index)
14fa73a7
HL		 934{
935 struct bc_state *bcs = at_state->bcs;
936 struct cardstate *cs = at_state->cs;
937 int retval;
69049cc8 938 unsigned long flags;
14fa73a7
HL		 939
940 bcs->chstate |= CHS_NOTIFY_LL;
14fa73a7 941
69049cc8
TS		 942 spin_lock_irqsave(&cs->lock, flags);
943 if (at_state->seq_index != seq_index) {
944 spin_unlock_irqrestore(&cs->lock, flags);
14fa73a7 945 goto error;
69049cc8
TS		 946 }
947 spin_unlock_irqrestore(&cs->lock, flags);
14fa73a7
HL		 948
949 retval = gigaset_isdn_setup_dial(at_state, data);
950 if (retval != 0)
951 goto error;
952
953
954 at_state->pending_commands |= PC_CID;
784d5858 955 gig_dbg(DEBUG_CMD, "Scheduling PC_CID");
917f5085 956 atomic_set(&cs->commands_pending, 1);
14fa73a7
HL		 957 return;
958
959error:
960 at_state->pending_commands |= PC_NOCID;
784d5858 961 gig_dbg(DEBUG_CMD, "Scheduling PC_NOCID");
917f5085 962 atomic_set(&cs->commands_pending, 1);
14fa73a7
HL		 963 return;
964}
965
966static void start_accept(struct at_state_t *at_state)
967{
968 struct cardstate *cs = at_state->cs;
969 int retval;
970
971 retval = gigaset_isdn_setup_accept(at_state);
972
973 if (retval == 0) {
974 at_state->pending_commands |= PC_ACCEPT;
784d5858 975 gig_dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
917f5085 976 atomic_set(&cs->commands_pending, 1);
14fa73a7
HL		 977 } else {
978 //FIXME
979 at_state->pending_commands |= PC_HUP;
784d5858 980 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
917f5085 981 atomic_set(&cs->commands_pending, 1);
14fa73a7
HL		 982 }
983}
984
985static void do_start(struct cardstate *cs)
986{
987 gigaset_free_channels(cs);
988
989 if (atomic_read(&cs->mstate) != MS_LOCKED)
990 schedule_init(cs, MS_INIT);
991
69049cc8 992 cs->isdn_up = 1;
14fa73a7 993 gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
784d5858
TS		 994 // FIXME: not in locked mode
995 // FIXME 2: only after init sequence
14fa73a7
HL		 996
997 cs->waiting = 0;
998 wake_up(&cs->waitqueue);
999}
1000
1001static void finish_shutdown(struct cardstate *cs)
1002{
1003 if (atomic_read(&cs->mstate) != MS_LOCKED) {
1004 atomic_set(&cs->mstate, MS_UNINITIALIZED);
1005 atomic_set(&cs->mode, M_UNKNOWN);
1006 }
1007
69049cc8
TS		 1008 /* Tell the LL that the device is not available .. */
1009 if (cs->isdn_up) {
1010 cs->isdn_up = 0;
1011 gigaset_i4l_cmd(cs, ISDN_STAT_STOP);
1012 }
1013
14fa73a7
HL		 1014 /* The rest is done by cleanup_cs () in user mode. */
1015
1016 cs->cmd_result = -ENODEV;
1017 cs->waiting = 0;
1018 wake_up_interruptible(&cs->waitqueue);
1019}
1020
1021static void do_shutdown(struct cardstate *cs)
1022{
1023 gigaset_block_channels(cs);
1024
1025 if (atomic_read(&cs->mstate) == MS_READY) {
1026 atomic_set(&cs->mstate, MS_SHUTDOWN);
1027 cs->at_state.pending_commands |= PC_SHUTDOWN;
917f5085 1028 atomic_set(&cs->commands_pending, 1);
784d5858 1029 gig_dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN");
14fa73a7
HL		 1030 } else
1031 finish_shutdown(cs);
1032}
1033
1034static void do_stop(struct cardstate *cs)
1035{
69049cc8
TS		 1036 unsigned long flags;
1037
1038 spin_lock_irqsave(&cs->lock, flags);
1039 cs->connected = 0;
1040 spin_unlock_irqrestore(&cs->lock, flags);
1041
14fa73a7
HL		 1042 do_shutdown(cs);
1043}
1044
1045/* Entering cid mode or getting a cid failed:
1046 * try to initialize the device and try again.
1047 *
1048 * channel >= 0: getting cid for the channel failed
1049 * channel < 0: entering cid mode failed
1050 *
1051 * returns 0 on failure
1052 */
1053static int reinit_and_retry(struct cardstate *cs, int channel)
1054{
1055 int i;
1056
1057 if (--cs->retry_count <= 0)
1058 return 0;
1059
1060 for (i = 0; i < cs->channels; ++i)
1061 if (cs->bcs[i].at_state.cid > 0)
1062 return 0;
1063
1064 if (channel < 0)
784d5858
TS		 1065 dev_warn(cs->dev,
1066 "Could not enter cid mode. Reinit device and try again.\n");
14fa73a7 1067 else {
784d5858
TS		 1068 dev_warn(cs->dev,
1069 "Could not get a call id. Reinit device and try again.\n");
14fa73a7
HL		 1070 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1071 }
1072 schedule_init(cs, MS_INIT);
1073 return 1;
1074}
1075
1076static int at_state_invalid(struct cardstate *cs,
784d5858 1077 struct at_state_t *test_ptr)
14fa73a7
HL		 1078{
1079 unsigned long flags;
1080 unsigned channel;
1081 struct at_state_t *at_state;
1082 int retval = 0;
1083
1084 spin_lock_irqsave(&cs->lock, flags);
1085
1086 if (test_ptr == &cs->at_state)
1087 goto exit;
1088
1089 list_for_each_entry(at_state, &cs->temp_at_states, list)
1090 if (at_state == test_ptr)
1091 goto exit;
1092
1093 for (channel = 0; channel < cs->channels; ++channel)
1094 if (&cs->bcs[channel].at_state == test_ptr)
1095 goto exit;
1096
1097 retval = 1;
1098exit:
1099 spin_unlock_irqrestore(&cs->lock, flags);
1100 return retval;
1101}
1102
1103static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1104 struct at_state_t **p_at_state)
1105{
1106 int retval;
1107 struct at_state_t *at_state = *p_at_state;
1108
1109 retval = gigaset_isdn_icall(at_state);
1110 switch (retval) {
1111 case ICALL_ACCEPT:
1112 break;
1113 default:
784d5858 1114 dev_err(cs->dev, "internal error: disposition=%d\n", retval);
14fa73a7
HL		 1115 /* --v-- fall through --v-- */
1116 case ICALL_IGNORE:
1117 case ICALL_REJECT:
1118 /* hang up actively
1119 * Device doc says that would reject the call.
1120 * In fact it doesn't.
1121 */
1122 at_state->pending_commands |= PC_HUP;
1123 atomic_set(&cs->commands_pending, 1);
1124 break;
1125 }
1126}
1127
1128static int do_lock(struct cardstate *cs)
1129{
1130 int mode;
1131 int i;
1132
1133 switch (atomic_read(&cs->mstate)) {
1134 case MS_UNINITIALIZED:
1135 case MS_READY:
1136 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1137 cs->at_state.pending_commands)
1138 return -EBUSY;
1139
1140 for (i = 0; i < cs->channels; ++i)
1141 if (cs->bcs[i].at_state.pending_commands)
1142 return -EBUSY;
1143
1144 if (!gigaset_get_channels(cs))
1145 return -EBUSY;
1146
1147 break;
1148 case MS_LOCKED:
1149 //retval = -EACCES;
1150 break;
1151 default:
1152 return -EBUSY;
1153 }
1154
1155 mode = atomic_read(&cs->mode);
1156 atomic_set(&cs->mstate, MS_LOCKED);
1157 atomic_set(&cs->mode, M_UNKNOWN);
14fa73a7
HL		 1158
1159 return mode;
1160}
1161
1162static int do_unlock(struct cardstate *cs)
1163{
1164 if (atomic_read(&cs->mstate) != MS_LOCKED)
1165 return -EINVAL;
1166
1167 atomic_set(&cs->mstate, MS_UNINITIALIZED);
1168 atomic_set(&cs->mode, M_UNKNOWN);
1169 gigaset_free_channels(cs);
69049cc8 1170 if (cs->connected)
14fa73a7
HL		 1171 schedule_init(cs, MS_INIT);
1172
1173 return 0;
1174}
1175
1176static void do_action(int action, struct cardstate *cs,
1177 struct bc_state *bcs,
1178 struct at_state_t **p_at_state, char **pp_command,
1179 int *p_genresp, int *p_resp_code,
1180 struct event_t *ev)
1181{
1182 struct at_state_t *at_state = *p_at_state;
1183 struct at_state_t *at_state2;
1184 unsigned long flags;
1185
1186 int channel;
1187
1188 unsigned char *s, *e;
1189 int i;
1190 unsigned long val;
1191
1192 switch (action) {
1193 case ACT_NOTHING:
1194 break;
1195 case ACT_TIMEOUT:
1196 at_state->waiting = 1;
1197 break;
1198 case ACT_INIT:
14fa73a7
HL		 1199 cs->at_state.pending_commands &= ~PC_INIT;
1200 cs->cur_at_seq = SEQ_NONE;
1201 atomic_set(&cs->mode, M_UNIMODEM);
69049cc8
TS		 1202 spin_lock_irqsave(&cs->lock, flags);
1203 if (!cs->cidmode) {
1204 spin_unlock_irqrestore(&cs->lock, flags);
14fa73a7
HL		 1205 gigaset_free_channels(cs);
1206 atomic_set(&cs->mstate, MS_READY);
1207 break;
1208 }
69049cc8 1209 spin_unlock_irqrestore(&cs->lock, flags);
14fa73a7 1210 cs->at_state.pending_commands |= PC_CIDMODE;
917f5085 1211 atomic_set(&cs->commands_pending, 1);
784d5858 1212 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
14fa73a7
HL		 1213 break;
1214 case ACT_FAILINIT:
784d5858 1215 dev_warn(cs->dev, "Could not initialize the device.\n");
14fa73a7
HL		 1216 cs->dle = 0;
1217 init_failed(cs, M_UNKNOWN);
1218 cs->cur_at_seq = SEQ_NONE;
1219 break;
1220 case ACT_CONFIGMODE:
1221 init_failed(cs, M_CONFIG);
1222 cs->cur_at_seq = SEQ_NONE;
1223 break;
1224 case ACT_SETDLE1:
1225 cs->dle = 1;
1226 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1227 cs->inbuf[0].inputstate &=
1228 ~(INS_command | INS_DLE_command);
1229 break;
1230 case ACT_SETDLE0:
1231 cs->dle = 0;
1232 cs->inbuf[0].inputstate =
1233 (cs->inbuf[0].inputstate & ~INS_DLE_command)
1234 | INS_command;
1235 break;
1236 case ACT_CMODESET:
1237 if (atomic_read(&cs->mstate) == MS_INIT ||
1238 atomic_read(&cs->mstate) == MS_RECOVER) {
1239 gigaset_free_channels(cs);
1240 atomic_set(&cs->mstate, MS_READY);
1241 }
1242 atomic_set(&cs->mode, M_CID);
1243 cs->cur_at_seq = SEQ_NONE;
1244 break;
1245 case ACT_UMODESET:
1246 atomic_set(&cs->mode, M_UNIMODEM);
1247 cs->cur_at_seq = SEQ_NONE;
1248 break;
1249 case ACT_FAILCMODE:
1250 cs->cur_at_seq = SEQ_NONE;
1251 if (atomic_read(&cs->mstate) == MS_INIT ||
1252 atomic_read(&cs->mstate) == MS_RECOVER) {
1253 init_failed(cs, M_UNKNOWN);
1254 break;
1255 }
1256 if (!reinit_and_retry(cs, -1))
1257 schedule_init(cs, MS_RECOVER);
1258 break;
1259 case ACT_FAILUMODE:
1260 cs->cur_at_seq = SEQ_NONE;
1261 schedule_init(cs, MS_RECOVER);
1262 break;
1263 case ACT_HUPMODEM:
1264 /* send "+++" (hangup in unimodem mode) */
1265 cs->ops->write_cmd(cs, "+++", 3, NULL);
1266 break;
1267 case ACT_RING:
1268 /* get fresh AT state structure for new CID */
1269 at_state2 = get_free_channel(cs, ev->parameter);
1270 if (!at_state2) {
784d5858
TS		 1271 dev_warn(cs->dev,
1272 "RING ignored: could not allocate channel structure\n");
14fa73a7
HL		 1273 break;
1274 }
1275
1276 /* initialize AT state structure
1277 * note that bcs may be NULL if no B channel is free
1278 */
1279 at_state2->ConState = 700;
1280 kfree(at_state2->str_var[STR_NMBR]);
1281 at_state2->str_var[STR_NMBR] = NULL;
1282 kfree(at_state2->str_var[STR_ZCPN]);
1283 at_state2->str_var[STR_ZCPN] = NULL;
1284 kfree(at_state2->str_var[STR_ZBC]);
1285 at_state2->str_var[STR_ZBC] = NULL;
1286 kfree(at_state2->str_var[STR_ZHLC]);
1287 at_state2->str_var[STR_ZHLC] = NULL;
1288 at_state2->int_var[VAR_ZCTP] = -1;
1289
1290 spin_lock_irqsave(&cs->lock, flags);
1291 at_state2->timer_expires = RING_TIMEOUT;
1292 at_state2->timer_active = 1;
1293 spin_unlock_irqrestore(&cs->lock, flags);
1294 break;
1295 case ACT_ICALL:
1296 handle_icall(cs, bcs, p_at_state);
1297 at_state = *p_at_state;
1298 break;
1299 case ACT_FAILSDOWN:
784d5858 1300 dev_warn(cs->dev, "Could not shut down the device.\n");
14fa73a7
HL		 1301 /* fall through */
1302 case ACT_FAKESDOWN:
1303 case ACT_SDOWN:
1304 cs->cur_at_seq = SEQ_NONE;
1305 finish_shutdown(cs);
1306 break;
1307 case ACT_CONNECT:
1308 if (cs->onechannel) {
1309 at_state->pending_commands |= PC_DLE1;
1310 atomic_set(&cs->commands_pending, 1);
1311 break;
1312 }
1313 bcs->chstate |= CHS_D_UP;
1314 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1315 cs->ops->init_bchannel(bcs);
1316 break;
1317 case ACT_DLE1:
1318 cs->cur_at_seq = SEQ_NONE;
1319 bcs = cs->bcs + cs->curchannel;
1320
1321 bcs->chstate |= CHS_D_UP;
1322 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1323 cs->ops->init_bchannel(bcs);
1324 break;
1325 case ACT_FAKEHUP:
1326 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1327 /* fall through */
1328 case ACT_DISCONNECT:
1329 cs->cur_at_seq = SEQ_NONE;
1330 at_state->cid = -1;
1331 if (bcs && cs->onechannel && cs->dle) {
1332 /* Check for other open channels not needed:
1333 * DLE only used for M10x with one B channel.
1334 */
1335 at_state->pending_commands |= PC_DLE0;
1336 atomic_set(&cs->commands_pending, 1);
1337 } else {
1338 disconnect(p_at_state);
1339 at_state = *p_at_state;
1340 }
1341 break;
1342 case ACT_FAKEDLE0:
1343 at_state->int_var[VAR_ZDLE] = 0;
1344 cs->dle = 0;
1345 /* fall through */
1346 case ACT_DLE0:
1347 cs->cur_at_seq = SEQ_NONE;
1348 at_state2 = &cs->bcs[cs->curchannel].at_state;
1349 disconnect(&at_state2);
1350 break;
1351 case ACT_ABORTHUP:
1352 cs->cur_at_seq = SEQ_NONE;
784d5858 1353 dev_warn(cs->dev, "Could not hang up.\n");
14fa73a7
HL		 1354 at_state->cid = -1;
1355 if (bcs && cs->onechannel)
1356 at_state->pending_commands |= PC_DLE0;
1357 else {
1358 disconnect(p_at_state);
1359 at_state = *p_at_state;
1360 }
1361 schedule_init(cs, MS_RECOVER);
1362 break;
1363 case ACT_FAILDLE0:
1364 cs->cur_at_seq = SEQ_NONE;
784d5858 1365 dev_warn(cs->dev, "Could not leave DLE mode.\n");
14fa73a7
HL		 1366 at_state2 = &cs->bcs[cs->curchannel].at_state;
1367 disconnect(&at_state2);
1368 schedule_init(cs, MS_RECOVER);
1369 break;
1370 case ACT_FAILDLE1:
1371 cs->cur_at_seq = SEQ_NONE;
784d5858
TS		 1372 dev_warn(cs->dev,
1373 "Could not enter DLE mode. Trying to hang up.\n");
14fa73a7
HL		 1374 channel = cs->curchannel;
1375 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1376 atomic_set(&cs->commands_pending, 1);
1377 break;
1378
1379 case ACT_CID: /* got cid; start dialing */
1380 cs->cur_at_seq = SEQ_NONE;
1381 channel = cs->curchannel;
1382 if (ev->parameter > 0 && ev->parameter <= 65535) {
1383 cs->bcs[channel].at_state.cid = ev->parameter;
1384 cs->bcs[channel].at_state.pending_commands |=
1385 PC_DIAL;
1386 atomic_set(&cs->commands_pending, 1);
1387 break;
1388 }
1389 /* fall through */
1390 case ACT_FAILCID:
1391 cs->cur_at_seq = SEQ_NONE;
1392 channel = cs->curchannel;
1393 if (!reinit_and_retry(cs, channel)) {
784d5858
TS		 1394 dev_warn(cs->dev,
1395 "Could not get a call ID. Cannot dial.\n");
14fa73a7
HL		 1396 at_state2 = &cs->bcs[channel].at_state;
1397 disconnect(&at_state2);
1398 }
1399 break;
1400 case ACT_ABORTCID:
1401 cs->cur_at_seq = SEQ_NONE;
1402 at_state2 = &cs->bcs[cs->curchannel].at_state;
1403 disconnect(&at_state2);
1404 break;
1405
1406 case ACT_DIALING:
1407 case ACT_ACCEPTED:
1408 cs->cur_at_seq = SEQ_NONE;
1409 break;
1410
1411 case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL processing */
1412 disconnect(p_at_state);
1413 at_state = *p_at_state;
1414 break;
1415
1416 case ACT_ABORTDIAL: /* error/timeout during dial preparation */
1417 cs->cur_at_seq = SEQ_NONE;
1418 at_state->pending_commands |= PC_HUP;
1419 atomic_set(&cs->commands_pending, 1);
1420 break;
1421
1422 case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
1423 case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
1424 case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
1425 at_state->pending_commands |= PC_HUP;
1426 atomic_set(&cs->commands_pending, 1);
1427 break;
917f5085 1428 case ACT_GETSTRING: /* warning: RING, ZDLE, ...
784d5858 1429 are not handled properly anymore */
14fa73a7
HL		 1430 at_state->getstring = 1;
1431 break;
1432 case ACT_SETVER:
1433 if (!ev->ptr) {
1434 *p_genresp = 1;
1435 *p_resp_code = RSP_ERROR;
1436 break;
1437 }
1438 s = ev->ptr;
1439
1440 if (!strcmp(s, "OK")) {
1441 *p_genresp = 1;
1442 *p_resp_code = RSP_ERROR;
1443 break;
1444 }
1445
1446 for (i = 0; i < 4; ++i) {
1447 val = simple_strtoul(s, (char **) &e, 10);
1448 if (val > INT_MAX || e == s)
1449 break;
1450 if (i == 3) {
1451 if (*e)
1452 break;
1453 } else if (*e != '.')
1454 break;
1455 else
1456 s = e + 1;
1457 cs->fwver[i] = val;
1458 }
1459 if (i != 4) {
1460 *p_genresp = 1;
1461 *p_resp_code = RSP_ERROR;
1462 break;
1463 }
1464 /*at_state->getstring = 1;*/
1465 cs->gotfwver = 0;
1466 break;
1467 case ACT_GOTVER:
1468 if (cs->gotfwver == 0) {
1469 cs->gotfwver = 1;
784d5858
TS		 1470 gig_dbg(DEBUG_ANY,
1471 "firmware version %02d.%03d.%02d.%02d",
1472 cs->fwver[0], cs->fwver[1],
1473 cs->fwver[2], cs->fwver[3]);
14fa73a7
HL		 1474 break;
1475 }
1476 /* fall through */
1477 case ACT_FAILVER:
1478 cs->gotfwver = -1;
784d5858 1479 dev_err(cs->dev, "could not read firmware version.\n");
14fa73a7
HL		 1480 break;
1481#ifdef CONFIG_GIGASET_DEBUG
1482 case ACT_ERROR:
1483 *p_genresp = 1;
1484 *p_resp_code = RSP_ERROR;
1485 break;
1486 case ACT_TEST:
1487 {
1488 static int count = 3; //2; //1;
1489 *p_genresp = 1;
1490 *p_resp_code = count ? RSP_ERROR : RSP_OK;
1491 if (count > 0)
1492 --count;
1493 }
1494 break;
1495#endif
1496 case ACT_DEBUG:
784d5858 1497 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
14fa73a7
HL		 1498 __func__, ev->type, at_state->ConState);
1499 break;
1500 case ACT_WARN:
784d5858
TS		 1501 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1502 __func__, ev->type, at_state->ConState);
14fa73a7
HL		 1503 break;
1504 case ACT_ZCAU:
784d5858
TS		 1505 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1506 ev->parameter, at_state->ConState);
14fa73a7
HL		 1507 break;
1508
1509 /* events from the LL */
1510 case ACT_DIAL:
1511 start_dial(at_state, ev->ptr, ev->parameter);
1512 break;
1513 case ACT_ACCEPT:
1514 start_accept(at_state);
1515 break;
1516 case ACT_PROTO_L2:
784d5858
TS		 1517 gig_dbg(DEBUG_CMD, "set protocol to %u",
1518 (unsigned) ev->parameter);
14fa73a7
HL		 1519 at_state->bcs->proto2 = ev->parameter;
1520 break;
1521 case ACT_HUP:
1522 at_state->pending_commands |= PC_HUP;
917f5085 1523 atomic_set(&cs->commands_pending, 1);
784d5858 1524 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
14fa73a7
HL		 1525 break;
1526
1527 /* hotplug events */
1528 case ACT_STOP:
1529 do_stop(cs);
1530 break;
1531 case ACT_START:
1532 do_start(cs);
1533 break;
1534
1535 /* events from the interface */ // FIXME without ACT_xxxx?
1536 case ACT_IF_LOCK:
1537 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1538 cs->waiting = 0;
1539 wake_up(&cs->waitqueue);
1540 break;
1541 case ACT_IF_VER:
1542 if (ev->parameter != 0)
1543 cs->cmd_result = -EINVAL;
1544 else if (cs->gotfwver != 1) {
1545 cs->cmd_result = -ENOENT;
1546 } else {
1547 memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1548 cs->cmd_result = 0;
1549 }
1550 cs->waiting = 0;
1551 wake_up(&cs->waitqueue);
1552 break;
1553
1554 /* events from the proc file system */ // FIXME without ACT_xxxx?
1555 case ACT_PROC_CIDMODE:
69049cc8
TS		 1556 spin_lock_irqsave(&cs->lock, flags);
1557 if (ev->parameter != cs->cidmode) {
1558 cs->cidmode = ev->parameter;
14fa73a7
HL		 1559 if (ev->parameter) {
1560 cs->at_state.pending_commands |= PC_CIDMODE;
784d5858 1561 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
14fa73a7
HL		 1562 } else {
1563 cs->at_state.pending_commands |= PC_UMMODE;
784d5858 1564 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
14fa73a7
HL		 1565 }
1566 atomic_set(&cs->commands_pending, 1);
1567 }
69049cc8 1568 spin_unlock_irqrestore(&cs->lock, flags);
14fa73a7
HL		 1569 cs->waiting = 0;
1570 wake_up(&cs->waitqueue);
1571 break;
1572
1573 /* events from the hardware drivers */
1574 case ACT_NOTIFY_BC_DOWN:
1575 bchannel_down(bcs);
1576 break;
1577 case ACT_NOTIFY_BC_UP:
1578 bchannel_up(bcs);
1579 break;
1580 case ACT_SHUTDOWN:
1581 do_shutdown(cs);
1582 break;
1583
1584
1585 default:
1586 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1587 *pp_command = at_state->bcs->commands[action - ACT_CMD];
1588 if (!*pp_command) {
1589 *p_genresp = 1;
1590 *p_resp_code = RSP_NULL;
1591 }
1592 } else
784d5858 1593 dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
14fa73a7
HL		 1594 }
1595}
1596
1597/* State machine to do the calling and hangup procedure */
1598static void process_event(struct cardstate *cs, struct event_t *ev)
1599{
1600 struct bc_state *bcs;
1601 char *p_command = NULL;
1602 struct reply_t *rep;
1603 int rcode;
1604 int genresp = 0;
1605 int resp_code = RSP_ERROR;
1606 int sendcid;
1607 struct at_state_t *at_state;
1608 int index;
1609 int curact;
1610 unsigned long flags;
1611
14fa73a7
HL		 1612 if (ev->cid >= 0) {
1613 at_state = at_state_from_cid(cs, ev->cid);
1614 if (!at_state) {
1615 gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
784d5858 1616 NULL, 0, NULL);
14fa73a7
HL		 1617 return;
1618 }
1619 } else {
1620 at_state = ev->at_state;
1621 if (at_state_invalid(cs, at_state)) {
784d5858
TS		 1622 gig_dbg(DEBUG_ANY, "event for invalid at_state %p",
1623 at_state);
14fa73a7
HL		 1624 return;
1625 }
1626 }
1627
784d5858
TS		 1628 gig_dbg(DEBUG_CMD, "connection state %d, event %d",
1629 at_state->ConState, ev->type);
14fa73a7
HL		 1630
1631 bcs = at_state->bcs;
1632 sendcid = at_state->cid;
1633
1634 /* Setting the pointer to the dial array */
1635 rep = at_state->replystruct;
14fa73a7 1636
69049cc8 1637 spin_lock_irqsave(&cs->lock, flags);
14fa73a7 1638 if (ev->type == EV_TIMEOUT) {
69049cc8 1639 if (ev->parameter != at_state->timer_index
14fa73a7
HL		 1640 || !at_state->timer_active) {
1641 ev->type = RSP_NONE; /* old timeout */
784d5858 1642 gig_dbg(DEBUG_ANY, "old timeout");
14fa73a7 1643 } else if (!at_state->waiting)
784d5858 1644 gig_dbg(DEBUG_ANY, "timeout occurred");
14fa73a7 1645 else
784d5858 1646 gig_dbg(DEBUG_ANY, "stopped waiting");
14fa73a7 1647 }
69049cc8 1648 spin_unlock_irqrestore(&cs->lock, flags);
14fa73a7 1649
917f5085
TS		 1650 /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1651 or at_state->str_var[STR_XXXX], set it */
14fa73a7
HL		 1652 if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1653 index = ev->type - RSP_VAR;
1654 at_state->int_var[index] = ev->parameter;
1655 } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1656 index = ev->type - RSP_STR;
1657 kfree(at_state->str_var[index]);
1658 at_state->str_var[index] = ev->ptr;
917f5085
TS		 1659 ev->ptr = NULL; /* prevent process_events() from
1660 deallocating ptr */
14fa73a7
HL		 1661 }
1662
1663 if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1664 at_state->getstring = 0;
1665
917f5085
TS		 1666 /* Search row in dial array which matches modem response and current
1667 constate */
14fa73a7
HL		 1668 for (;; rep++) {
1669 rcode = rep->resp_code;
14fa73a7
HL		 1670 if (rcode == RSP_LAST) {
1671 /* found nothing...*/
784d5858
TS		 1672 dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1673 "resp_code %d in ConState %d!\n",
1674 __func__, ev->type, at_state->ConState);
14fa73a7
HL		 1675 return;
1676 }
1677 if ((rcode == RSP_ANY || rcode == ev->type)
1678 && ((int) at_state->ConState >= rep->min_ConState)
1679 && (rep->max_ConState < 0
1680 || (int) at_state->ConState <= rep->max_ConState)
1681 && (rep->parameter < 0 || rep->parameter == ev->parameter))
1682 break;
1683 }
1684
1685 p_command = rep->command;
1686
1687 at_state->waiting = 0;
1688 for (curact = 0; curact < MAXACT; ++curact) {
1689 /* The row tells us what we should do ..
1690 */
1691 do_action(rep->action[curact], cs, bcs, &at_state, &p_command, &genresp, &resp_code, ev);
1692 if (!at_state)
1693 break; /* may be freed after disconnect */
1694 }
1695
1696 if (at_state) {
1697 /* Jump to the next con-state regarding the array */
1698 if (rep->new_ConState >= 0)
1699 at_state->ConState = rep->new_ConState;
1700
1701 if (genresp) {
1702 spin_lock_irqsave(&cs->lock, flags);
1703 at_state->timer_expires = 0; //FIXME
1704 at_state->timer_active = 0; //FIXME
1705 spin_unlock_irqrestore(&cs->lock, flags);
1706 gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
1707 } else {
1708 /* Send command to modem if not NULL... */
1709 if (p_command/*rep->command*/) {
69049cc8 1710 if (cs->connected)
14fa73a7 1711 send_command(cs, p_command,
784d5858
TS		 1712 sendcid, cs->dle,
1713 GFP_ATOMIC);
14fa73a7
HL		 1714 else
1715 gigaset_add_event(cs, at_state,
784d5858
TS		 1716 RSP_NODEV,
1717 NULL, 0, NULL);
14fa73a7
HL		 1718 }
1719
1720 spin_lock_irqsave(&cs->lock, flags);
1721 if (!rep->timeout) {
1722 at_state->timer_expires = 0;
1723 at_state->timer_active = 0;
1724 } else if (rep->timeout > 0) { /* new timeout */
1725 at_state->timer_expires = rep->timeout * 10;
1726 at_state->timer_active = 1;
69049cc8 1727 ++at_state->timer_index;
14fa73a7
HL		 1728 }
1729 spin_unlock_irqrestore(&cs->lock, flags);
1730 }
1731 }
1732}
1733
1734static void schedule_sequence(struct cardstate *cs,
1735 struct at_state_t *at_state, int sequence)
1736{
1737 cs->cur_at_seq = sequence;
1738 gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1739}
1740
1741static void process_command_flags(struct cardstate *cs)
1742{
1743 struct at_state_t *at_state = NULL;
1744 struct bc_state *bcs;
1745 int i;
1746 int sequence;
69049cc8 1747 unsigned long flags;
14fa73a7 1748
14fa73a7
HL		 1749 atomic_set(&cs->commands_pending, 0);
1750
1751 if (cs->cur_at_seq) {
784d5858 1752 gig_dbg(DEBUG_CMD, "not searching scheduled commands: busy");
14fa73a7
HL		 1753 return;
1754 }
1755
784d5858 1756 gig_dbg(DEBUG_CMD, "searching scheduled commands");
14fa73a7
HL		 1757
1758 sequence = SEQ_NONE;
1759
1760 /* clear pending_commands and hangup channels on shutdown */
1761 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1762 cs->at_state.pending_commands &= ~PC_CIDMODE;
1763 for (i = 0; i < cs->channels; ++i) {
1764 bcs = cs->bcs + i;
1765 at_state = &bcs->at_state;
1766 at_state->pending_commands &=
1767 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1768 if (at_state->cid > 0)
1769 at_state->pending_commands |= PC_HUP;
1770 if (at_state->pending_commands & PC_CID) {
1771 at_state->pending_commands |= PC_NOCID;
1772 at_state->pending_commands &= ~PC_CID;
1773 }
1774 }
1775 }
1776
1777 /* clear pending_commands and hangup channels on reset */
1778 if (cs->at_state.pending_commands & PC_INIT) {
1779 cs->at_state.pending_commands &= ~PC_CIDMODE;
1780 for (i = 0; i < cs->channels; ++i) {
1781 bcs = cs->bcs + i;
1782 at_state = &bcs->at_state;
1783 at_state->pending_commands &=
1784 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1785 if (at_state->cid > 0)
1786 at_state->pending_commands |= PC_HUP;
1787 if (atomic_read(&cs->mstate) == MS_RECOVER) {
1788 if (at_state->pending_commands & PC_CID) {
1789 at_state->pending_commands |= PC_NOCID;
1790 at_state->pending_commands &= ~PC_CID;
1791 }
1792 }
1793 }
1794 }
1795
1796 /* only switch back to unimodem mode, if no commands are pending and no channels are up */
69049cc8 1797 spin_lock_irqsave(&cs->lock, flags);
14fa73a7 1798 if (cs->at_state.pending_commands == PC_UMMODE
69049cc8 1799 && !cs->cidmode
14fa73a7
HL		 1800 && list_empty(&cs->temp_at_states)
1801 && atomic_read(&cs->mode) == M_CID) {
1802 sequence = SEQ_UMMODE;
1803 at_state = &cs->at_state;
1804 for (i = 0; i < cs->channels; ++i) {
1805 bcs = cs->bcs + i;
1806 if (bcs->at_state.pending_commands ||
1807 bcs->at_state.cid > 0) {
1808 sequence = SEQ_NONE;
1809 break;
1810 }
1811 }
1812 }
69049cc8 1813 spin_unlock_irqrestore(&cs->lock, flags);
14fa73a7
HL		 1814 cs->at_state.pending_commands &= ~PC_UMMODE;
1815 if (sequence != SEQ_NONE) {
1816 schedule_sequence(cs, at_state, sequence);
1817 return;
1818 }
1819
1820 for (i = 0; i < cs->channels; ++i) {
1821 bcs = cs->bcs + i;
1822 if (bcs->at_state.pending_commands & PC_HUP) {
1823 bcs->at_state.pending_commands &= ~PC_HUP;
1824 if (bcs->at_state.pending_commands & PC_CID) {
1825 /* not yet dialing: PC_NOCID is sufficient */
1826 bcs->at_state.pending_commands |= PC_NOCID;
1827 bcs->at_state.pending_commands &= ~PC_CID;
1828 } else {
1829 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1830 return;
1831 }
1832 }
1833 if (bcs->at_state.pending_commands & PC_NOCID) {
1834 bcs->at_state.pending_commands &= ~PC_NOCID;
1835 cs->curchannel = bcs->channel;
1836 schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1837 return;
1838 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1839 bcs->at_state.pending_commands &= ~PC_DLE0;
1840 cs->curchannel = bcs->channel;
1841 schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1842 return;
1843 }
1844 }
1845
1846 list_for_each_entry(at_state, &cs->temp_at_states, list)
1847 if (at_state->pending_commands & PC_HUP) {
1848 at_state->pending_commands &= ~PC_HUP;
1849 schedule_sequence(cs, at_state, SEQ_HUP);
1850 return;
1851 }
1852
1853 if (cs->at_state.pending_commands & PC_INIT) {
1854 cs->at_state.pending_commands &= ~PC_INIT;
1855 cs->dle = 0; //FIXME
1856 cs->inbuf->inputstate = INS_command;
1857 //FIXME reset card state (or -> LOCK0)?
1858 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1859 return;
1860 }
1861 if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1862 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1863 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1864 return;
1865 }
1866 if (cs->at_state.pending_commands & PC_CIDMODE) {
1867 cs->at_state.pending_commands &= ~PC_CIDMODE;
1868 if (atomic_read(&cs->mode) == M_UNIMODEM) {
14fa73a7 1869 cs->retry_count = 1;
14fa73a7
HL		 1870 schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1871 return;
1872 }
1873 }
1874
1875 for (i = 0; i < cs->channels; ++i) {
1876 bcs = cs->bcs + i;
1877 if (bcs->at_state.pending_commands & PC_DLE1) {
1878 bcs->at_state.pending_commands &= ~PC_DLE1;
1879 cs->curchannel = bcs->channel;
1880 schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1881 return;
1882 }
1883 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1884 bcs->at_state.pending_commands &= ~PC_ACCEPT;
1885 schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1886 return;
1887 }
1888 if (bcs->at_state.pending_commands & PC_DIAL) {
1889 bcs->at_state.pending_commands &= ~PC_DIAL;
1890 schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1891 return;
1892 }
1893 if (bcs->at_state.pending_commands & PC_CID) {
1894 switch (atomic_read(&cs->mode)) {
1895 case M_UNIMODEM:
1896 cs->at_state.pending_commands |= PC_CIDMODE;
784d5858 1897 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
14fa73a7
HL		 1898 atomic_set(&cs->commands_pending, 1);
1899 return;
1900#ifdef GIG_MAYINITONDIAL
1901 case M_UNKNOWN:
1902 schedule_init(cs, MS_INIT);
1903 return;
1904#endif
1905 }
1906 bcs->at_state.pending_commands &= ~PC_CID;
1907 cs->curchannel = bcs->channel;
1908#ifdef GIG_RETRYCID
1909 cs->retry_count = 2;
1910#else
1911 cs->retry_count = 1;
1912#endif
1913 schedule_sequence(cs, &cs->at_state, SEQ_CID);
1914 return;
1915 }
1916 }
1917}
1918
1919static void process_events(struct cardstate *cs)
1920{
1921 struct event_t *ev;
1922 unsigned head, tail;
1923 int i;
1924 int check_flags = 0;
1925 int was_busy;
69049cc8 1926 unsigned long flags;
14fa73a7 1927
69049cc8
TS		 1928 spin_lock_irqsave(&cs->ev_lock, flags);
1929 head = cs->ev_head;
14fa73a7
HL		 1930
1931 for (i = 0; i < 2 * MAX_EVENTS; ++i) {
69049cc8 1932 tail = cs->ev_tail;
14fa73a7
HL		 1933 if (tail == head) {
1934 if (!check_flags && !atomic_read(&cs->commands_pending))
1935 break;
1936 check_flags = 0;
69049cc8 1937 spin_unlock_irqrestore(&cs->ev_lock, flags);
14fa73a7 1938 process_command_flags(cs);
69049cc8
TS		 1939 spin_lock_irqsave(&cs->ev_lock, flags);
1940 tail = cs->ev_tail;
14fa73a7
HL		 1941 if (tail == head) {
1942 if (!atomic_read(&cs->commands_pending))
1943 break;
1944 continue;
1945 }
1946 }
1947
1948 ev = cs->events + head;
1949 was_busy = cs->cur_at_seq != SEQ_NONE;
69049cc8 1950 spin_unlock_irqrestore(&cs->ev_lock, flags);
14fa73a7 1951 process_event(cs, ev);
69049cc8 1952 spin_lock_irqsave(&cs->ev_lock, flags);
14fa73a7
HL		 1953 kfree(ev->ptr);
1954 ev->ptr = NULL;
1955 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1956 check_flags = 1;
1957
1958 head = (head + 1) % MAX_EVENTS;
69049cc8 1959 cs->ev_head = head;
14fa73a7
HL		 1960 }
1961
69049cc8
TS		 1962 spin_unlock_irqrestore(&cs->ev_lock, flags);
1963
14fa73a7 1964 if (i == 2 * MAX_EVENTS) {
784d5858
TS		 1965 dev_err(cs->dev,
1966 "infinite loop in process_events; aborting.\n");
14fa73a7
HL		 1967 }
1968}
1969
1970/* tasklet scheduled on any event received from the Gigaset device
1971 * parameter:
1972 * data ISDN controller state structure
1973 */
1974void gigaset_handle_event(unsigned long data)
1975{
1976 struct cardstate *cs = (struct cardstate *) data;
1977
14fa73a7
HL		 1978 /* handle incoming data on control/common channel */
1979 if (atomic_read(&cs->inbuf->head) != atomic_read(&cs->inbuf->tail)) {
784d5858 1980 gig_dbg(DEBUG_INTR, "processing new data");
14fa73a7
HL		 1981 cs->ops->handle_input(cs->inbuf);
1982 }
1983
1984 process_events(cs);
1985}
Linux kernel - Deliverables
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