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