drivers/isdn/gigaset/ev-layer.c

   1 /*
   2  * Stuff used by all variants of the driver
   3  *
   4  * Copyright (c) 2001 by Stefan Eilers,
   5  *                       Hansjoerg Lipp <hjlipp@web.de>,
   6  *                       Tilman Schmidt <tilman@imap.cc>.
   7  *
   8  * =====================================================================
   9  *      This program is free software; you can redistribute it and/or
  10  *      modify it under the terms of the GNU General Public License as
  11  *      published by the Free Software Foundation; either version 2 of
  12  *      the License, or (at your option) any later version.
  13  * =====================================================================
  14  */
  15
  16 #include "gigaset.h"
  17
  18 /* ========================================================== */
  19 /* bit masks for pending commands */
  20 #define PC_DIAL         0x001
  21 #define PC_HUP          0x002
  22 #define PC_INIT         0x004
  23 #define PC_DLE0         0x008
  24 #define PC_DLE1         0x010
  25 #define PC_SHUTDOWN     0x020
  26 #define PC_ACCEPT       0x040
  27 #define PC_CID          0x080
  28 #define PC_NOCID        0x100
  29 #define PC_CIDMODE      0x200
  30 #define PC_UMMODE       0x400
  31
  32 /* types of modem responses */
  33 #define RT_NOTHING      0
  34 #define RT_ZSAU         1
  35 #define RT_RING         2
  36 #define RT_NUMBER       3
  37 #define RT_STRING       4
  38 #define RT_HEX          5
  39 #define RT_ZCAU         6
  40
  41 /* Possible ASCII responses */
  42 #define RSP_OK          0
  43 //#define RSP_BUSY      1
  44 //#define RSP_CONNECT   2
  45 #define RSP_ZGCI        3
  46 #define RSP_RING        4
  47 #define RSP_ZAOC        5
  48 #define RSP_ZCSTR       6
  49 #define RSP_ZCFGT       7
  50 #define RSP_ZCFG        8
  51 #define RSP_ZCCR        9
  52 #define RSP_EMPTY       10
  53 #define RSP_ZLOG        11
  54 #define RSP_ZCAU        12
  55 #define RSP_ZMWI        13
  56 #define RSP_ZABINFO     14
  57 #define RSP_ZSMLSTCHG   15
  58 #define RSP_VAR         100
  59 #define RSP_ZSAU        (RSP_VAR + VAR_ZSAU)
  60 #define RSP_ZDLE        (RSP_VAR + VAR_ZDLE)
  61 #define RSP_ZVLS        (RSP_VAR + VAR_ZVLS)
  62 #define RSP_ZCTP        (RSP_VAR + VAR_ZCTP)
  63 #define RSP_STR         (RSP_VAR + VAR_NUM)
  64 #define RSP_NMBR        (RSP_STR + STR_NMBR)
  65 #define RSP_ZCPN        (RSP_STR + STR_ZCPN)
  66 #define RSP_ZCON        (RSP_STR + STR_ZCON)
  67 #define RSP_ZBC         (RSP_STR + STR_ZBC)
  68 #define RSP_ZHLC        (RSP_STR + STR_ZHLC)
  69 #define RSP_ERROR       -1      /* ERROR              */
  70 #define RSP_WRONG_CID   -2      /* unknown cid in cmd */
  71 //#define RSP_EMPTY     -3
  72 #define RSP_UNKNOWN     -4      /* unknown response   */
  73 #define RSP_FAIL        -5      /* internal error     */
  74 #define RSP_INVAL       -6      /* invalid response   */
  75
  76 #define RSP_NONE        -19
  77 #define RSP_STRING      -20
  78 #define RSP_NULL        -21
  79 //#define RSP_RETRYFAIL -22
  80 //#define RSP_RETRY     -23
  81 //#define RSP_SKIP      -24
  82 #define RSP_INIT        -27
  83 #define RSP_ANY         -26
  84 #define RSP_LAST        -28
  85 #define RSP_NODEV       -9
  86
  87 /* actions for process_response */
  88 #define ACT_NOTHING             0
  89 #define ACT_SETDLE1             1
  90 #define ACT_SETDLE0             2
  91 #define ACT_FAILINIT            3
  92 #define ACT_HUPMODEM            4
  93 #define ACT_CONFIGMODE          5
  94 #define ACT_INIT                6
  95 #define ACT_DLE0                7
  96 #define ACT_DLE1                8
  97 #define ACT_FAILDLE0            9
  98 #define ACT_FAILDLE1            10
  99 #define ACT_RING                11
 100 #define ACT_CID                 12
 101 #define ACT_FAILCID             13
 102 #define ACT_SDOWN               14
 103 #define ACT_FAILSDOWN           15
 104 #define ACT_DEBUG               16
 105 #define ACT_WARN                17
 106 #define ACT_DIALING             18
 107 #define ACT_ABORTDIAL           19
 108 #define ACT_DISCONNECT          20
 109 #define ACT_CONNECT             21
 110 #define ACT_REMOTEREJECT        22
 111 #define ACT_CONNTIMEOUT         23
 112 #define ACT_REMOTEHUP           24
 113 #define ACT_ABORTHUP            25
 114 #define ACT_ICALL               26
 115 #define ACT_ACCEPTED            27
 116 #define ACT_ABORTACCEPT         28
 117 #define ACT_TIMEOUT             29
 118 #define ACT_GETSTRING           30
 119 #define ACT_SETVER              31
 120 #define ACT_FAILVER             32
 121 #define ACT_GOTVER              33
 122 #define ACT_TEST                34
 123 #define ACT_ERROR               35
 124 #define ACT_ABORTCID            36
 125 #define ACT_ZCAU                37
 126 #define ACT_NOTIFY_BC_DOWN      38
 127 #define ACT_NOTIFY_BC_UP        39
 128 #define ACT_DIAL                40
 129 #define ACT_ACCEPT              41
 130 #define ACT_PROTO_L2            42
 131 #define ACT_HUP                 43
 132 #define ACT_IF_LOCK             44
 133 #define ACT_START               45
 134 #define ACT_STOP                46
 135 #define ACT_FAKEDLE0            47
 136 #define ACT_FAKEHUP             48
 137 #define ACT_FAKESDOWN           49
 138 #define ACT_SHUTDOWN            50
 139 #define ACT_PROC_CIDMODE        51
 140 #define ACT_UMODESET            52
 141 #define ACT_FAILUMODE           53
 142 #define ACT_CMODESET            54
 143 #define ACT_FAILCMODE           55
 144 #define ACT_IF_VER              56
 145 #define ACT_CMD                 100
 146
 147 /* at command sequences */
 148 #define SEQ_NONE        0
 149 #define SEQ_INIT        100
 150 #define SEQ_DLE0        200
 151 #define SEQ_DLE1        250
 152 #define SEQ_CID         300
 153 #define SEQ_NOCID       350
 154 #define SEQ_HUP         400
 155 #define SEQ_DIAL        600
 156 #define SEQ_ACCEPT      720
 157 #define SEQ_SHUTDOWN    500
 158 #define SEQ_CIDMODE     10
 159 #define SEQ_UMMODE      11
 160
 161
 162 // 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid), 400: hup, 500: reset, 600: dial, 700: ring
 163 struct reply_t gigaset_tab_nocid_m10x[]= /* with dle mode */
 164 {
 165         /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
 166
 167         /* initialize device, set cid mode if possible */
 168         //{RSP_INIT,     -1, -1,100,                900, 0, {ACT_TEST}},
 169         //{RSP_ERROR,   900,900, -1,                  0, 0, {ACT_FAILINIT}},
 170         //{RSP_OK,      900,900, -1,                100, INIT_TIMEOUT,
 171         //                                                  {ACT_TIMEOUT}},
 172
 173         {RSP_INIT,     -1, -1,SEQ_INIT,           100, INIT_TIMEOUT,
 174                                                           {ACT_TIMEOUT}},                /* wait until device is ready */
 175
 176         {EV_TIMEOUT,  100,100, -1,                101, 3, {0},             "Z\r"},       /* device in transparent mode? try to initialize it. */
 177         {RSP_OK,      101,103, -1,                120, 5, {ACT_GETSTRING}, "+GMR\r"},    /* get version */
 178
 179         {EV_TIMEOUT,  101,101, -1,                102, 5, {0},             "Z\r"},       /* timeout => try once again. */
 180         {RSP_ERROR,   101,101, -1,                102, 5, {0},             "Z\r"},       /* error => try once again. */
 181
 182         {EV_TIMEOUT,  102,102, -1,                108, 5, {ACT_SETDLE1},   "^SDLE=0\r"}, /* timeout => try again in DLE mode. */
 183         {RSP_OK,      108,108, -1,                104,-1},
 184         {RSP_ZDLE,    104,104,  0,                103, 5, {0},             "Z\r"},
 185         {EV_TIMEOUT,  104,104, -1,                  0, 0, {ACT_FAILINIT}},
 186         {RSP_ERROR,   108,108, -1,                  0, 0, {ACT_FAILINIT}},
 187
 188         {EV_TIMEOUT,  108,108, -1,                105, 2, {ACT_SETDLE0,
 189                                                            ACT_HUPMODEM,
 190                                                            ACT_TIMEOUT}},                /* still timeout => connection in unimodem mode? */
 191         {EV_TIMEOUT,  105,105, -1,                103, 5, {0},             "Z\r"},
 192
 193         {RSP_ERROR,   102,102, -1,                107, 5, {0},             "^GETPRE\r"}, /* ERROR on ATZ => maybe in config mode? */
 194         {RSP_OK,      107,107, -1,                  0, 0, {ACT_CONFIGMODE}},
 195         {RSP_ERROR,   107,107, -1,                  0, 0, {ACT_FAILINIT}},
 196         {EV_TIMEOUT,  107,107, -1,                  0, 0, {ACT_FAILINIT}},
 197
 198         {RSP_ERROR,   103,103, -1,                  0, 0, {ACT_FAILINIT}},
 199         {EV_TIMEOUT,  103,103, -1,                  0, 0, {ACT_FAILINIT}},
 200
 201         {RSP_STRING,  120,120, -1,                121,-1, {ACT_SETVER}},
 202
 203         {EV_TIMEOUT,  120,121, -1,                  0, 0, {ACT_FAILVER, ACT_INIT}},
 204         {RSP_ERROR,   120,121, -1,                  0, 0, {ACT_FAILVER, ACT_INIT}},
 205         {RSP_OK,      121,121, -1,                  0, 0, {ACT_GOTVER,  ACT_INIT}},
 206 #if 0
 207         {EV_TIMEOUT,  120,121, -1,                130, 5, {ACT_FAILVER},   "^SGCI=1\r"},
 208         {RSP_ERROR,   120,121, -1,                130, 5, {ACT_FAILVER},   "^SGCI=1\r"},
 209         {RSP_OK,      121,121, -1,                130, 5, {ACT_GOTVER},    "^SGCI=1\r"},
 210
 211         {RSP_OK,      130,130, -1,                  0, 0, {ACT_INIT}},
 212         {RSP_ERROR,   130,130, -1,                  0, 0, {ACT_FAILINIT}},
 213         {EV_TIMEOUT,  130,130, -1,                  0, 0, {ACT_FAILINIT}},
 214 #endif
 215
 216         /* leave dle mode */
 217         {RSP_INIT,      0,  0,SEQ_DLE0,           201, 5, {0},             "^SDLE=0\r"},
 218         {RSP_OK,      201,201, -1,                202,-1},
 219         //{RSP_ZDLE,    202,202,  0,                202, 0, {ACT_ERROR}},//DELETE
 220         {RSP_ZDLE,    202,202,  0,                  0, 0, {ACT_DLE0}},
 221         {RSP_NODEV,   200,249, -1,                  0, 0, {ACT_FAKEDLE0}},
 222         {RSP_ERROR,   200,249, -1,                  0, 0, {ACT_FAILDLE0}},
 223         {EV_TIMEOUT,  200,249, -1,                  0, 0, {ACT_FAILDLE0}},
 224
 225         /* enter dle mode */
 226         {RSP_INIT,      0,  0,SEQ_DLE1,           251, 5, {0},             "^SDLE=1\r"},
 227         {RSP_OK,      251,251, -1,                252,-1},
 228         {RSP_ZDLE,    252,252,  1,                  0, 0, {ACT_DLE1}},
 229         {RSP_ERROR,   250,299, -1,                  0, 0, {ACT_FAILDLE1}},
 230         {EV_TIMEOUT,  250,299, -1,                  0, 0, {ACT_FAILDLE1}},
 231
 232         /* incoming call */
 233         {RSP_RING,     -1, -1, -1,                 -1,-1, {ACT_RING}},
 234
 235         /* get cid */
 236         //{RSP_INIT,      0,  0,300,                901, 0, {ACT_TEST}},
 237         //{RSP_ERROR,   901,901, -1,                  0, 0, {ACT_FAILCID}},
 238         //{RSP_OK,      901,901, -1,                301, 5, {0},             "^SGCI?\r"},
 239
 240         {RSP_INIT,      0,  0,SEQ_CID,            301, 5, {0},             "^SGCI?\r"},
 241         {RSP_OK,      301,301, -1,                302,-1},
 242         {RSP_ZGCI,    302,302, -1,                  0, 0, {ACT_CID}},
 243         {RSP_ERROR,   301,349, -1,                  0, 0, {ACT_FAILCID}},
 244         {EV_TIMEOUT,  301,349, -1,                  0, 0, {ACT_FAILCID}},
 245
 246         /* enter cid mode */
 247         {RSP_INIT,      0,  0,SEQ_CIDMODE,        150, 5, {0},             "^SGCI=1\r"},
 248         {RSP_OK,      150,150, -1,                  0, 0, {ACT_CMODESET}},
 249         {RSP_ERROR,   150,150, -1,                  0, 0, {ACT_FAILCMODE}},
 250         {EV_TIMEOUT,  150,150, -1,                  0, 0, {ACT_FAILCMODE}},
 251
 252         /* leave cid mode */
 253         //{RSP_INIT,      0,  0,SEQ_UMMODE,         160, 5, {0},             "^SGCI=0\r"},
 254         {RSP_INIT,      0,  0,SEQ_UMMODE,         160, 5, {0},             "Z\r"},
 255         {RSP_OK,      160,160, -1,                  0, 0, {ACT_UMODESET}},
 256         {RSP_ERROR,   160,160, -1,                  0, 0, {ACT_FAILUMODE}},
 257         {EV_TIMEOUT,  160,160, -1,                  0, 0, {ACT_FAILUMODE}},
 258
 259         /* abort getting cid */
 260         {RSP_INIT,      0,  0,SEQ_NOCID,            0, 0, {ACT_ABORTCID}},
 261
 262         /* reset */
 263 #if 0
 264         {RSP_INIT,      0,  0,SEQ_SHUTDOWN,       503, 5, {0},             "^SGCI=0\r"},
 265         {RSP_OK,      503,503, -1,                504, 5, {0},             "Z\r"},
 266 #endif
 267         {RSP_INIT,      0,  0,SEQ_SHUTDOWN,       504, 5, {0},             "Z\r"},
 268         {RSP_OK,      504,504, -1,                  0, 0, {ACT_SDOWN}},
 269         {RSP_ERROR,   501,599, -1,                  0, 0, {ACT_FAILSDOWN}},
 270         {EV_TIMEOUT,  501,599, -1,                  0, 0, {ACT_FAILSDOWN}},
 271         {RSP_NODEV,   501,599, -1,                  0, 0, {ACT_FAKESDOWN}},
 272
 273         {EV_PROC_CIDMODE,-1, -1, -1,               -1,-1, {ACT_PROC_CIDMODE}}, //FIXME
 274         {EV_IF_LOCK,   -1, -1, -1,                 -1,-1, {ACT_IF_LOCK}}, //FIXME
 275         {EV_IF_VER,    -1, -1, -1,                 -1,-1, {ACT_IF_VER}}, //FIXME
 276         {EV_START,     -1, -1, -1,                 -1,-1, {ACT_START}}, //FIXME
 277         {EV_STOP,      -1, -1, -1,                 -1,-1, {ACT_STOP}}, //FIXME
 278         {EV_SHUTDOWN,  -1, -1, -1,                 -1,-1, {ACT_SHUTDOWN}}, //FIXME
 279
 280         /* misc. */
 281         {RSP_EMPTY,    -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 282         {RSP_ZCFGT,    -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 283         {RSP_ZCFG,     -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 284         {RSP_ZLOG,     -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 285         {RSP_ZMWI,     -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 286         {RSP_ZABINFO,  -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 287         {RSP_ZSMLSTCHG,-1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 288
 289         {RSP_ZCAU,     -1, -1, -1,                 -1,-1, {ACT_ZCAU}},
 290         {RSP_NONE,     -1, -1, -1,                 -1,-1, {ACT_DEBUG}},
 291         {RSP_ANY,      -1, -1, -1,                 -1,-1, {ACT_WARN}},
 292         {RSP_LAST}
 293 };
 294
 295 // 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring, 400: hup, 750: accepted icall
 296 struct reply_t gigaset_tab_cid_m10x[] = /* for M10x */
 297 {
 298         /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
 299
 300         /* dial */
 301         {EV_DIAL,      -1, -1, -1,                 -1,-1, {ACT_DIAL}}, //FIXME
 302         {RSP_INIT,      0,  0,SEQ_DIAL,           601, 5, {ACT_CMD+AT_BC}},
 303         {RSP_OK,      601,601, -1,                602, 5, {ACT_CMD+AT_HLC}},
 304         {RSP_NULL,    602,602, -1,                603, 5, {ACT_CMD+AT_PROTO}},
 305         {RSP_OK,      602,602, -1,                603, 5, {ACT_CMD+AT_PROTO}},
 306         {RSP_OK,      603,603, -1,                604, 5, {ACT_CMD+AT_TYPE}},
 307         {RSP_OK,      604,604, -1,                605, 5, {ACT_CMD+AT_MSN}},
 308         {RSP_OK,      605,605, -1,                606, 5, {ACT_CMD+AT_ISO}},
 309         {RSP_NULL,    605,605, -1,                606, 5, {ACT_CMD+AT_ISO}},
 310         {RSP_OK,      606,606, -1,                607, 5, {0},             "+VLS=17\r"}, /* set "Endgeraetemodus" */
 311         {RSP_OK,      607,607, -1,                608,-1},
 312         //{RSP_ZSAU,    608,608,ZSAU_PROCEEDING,    608, 0, {ACT_ERROR}},//DELETE
 313         {RSP_ZSAU,    608,608,ZSAU_PROCEEDING,    609, 5, {ACT_CMD+AT_DIAL}},
 314         {RSP_OK,      609,609, -1,                650, 0, {ACT_DIALING}},
 315
 316         {RSP_ZVLS,    608,608, 17,                 -1,-1, {ACT_DEBUG}},
 317         {RSP_ZCTP,    609,609, -1,                 -1,-1, {ACT_DEBUG}},
 318         {RSP_ZCPN,    609,609, -1,                 -1,-1, {ACT_DEBUG}},
 319         {RSP_ERROR,   601,609, -1,                  0, 0, {ACT_ABORTDIAL}},
 320         {EV_TIMEOUT,  601,609, -1,                  0, 0, {ACT_ABORTDIAL}},
 321
 322         /* dialing */
 323         {RSP_ZCTP,    650,650, -1,                 -1,-1, {ACT_DEBUG}},
 324         {RSP_ZCPN,    650,650, -1,                 -1,-1, {ACT_DEBUG}},
 325         {RSP_ZSAU,    650,650,ZSAU_CALL_DELIVERED, -1,-1, {ACT_DEBUG}}, /* some devices don't send this */
 326
 327         /* connection established  */
 328         {RSP_ZSAU,    650,650,ZSAU_ACTIVE,        800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
 329         {RSP_ZSAU,    750,750,ZSAU_ACTIVE,        800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
 330
 331         {EV_BC_OPEN,  800,800, -1,                800,-1, {ACT_NOTIFY_BC_UP}}, //FIXME new constate + timeout
 332
 333         /* remote hangup */
 334         {RSP_ZSAU,    650,650,ZSAU_DISCONNECT_IND,  0, 0, {ACT_REMOTEREJECT}},
 335         {RSP_ZSAU,    750,750,ZSAU_DISCONNECT_IND,  0, 0, {ACT_REMOTEHUP}},
 336         {RSP_ZSAU,    800,800,ZSAU_DISCONNECT_IND,  0, 0, {ACT_REMOTEHUP}},
 337
 338         /* hangup */
 339         {EV_HUP,       -1, -1, -1,                 -1,-1, {ACT_HUP}}, //FIXME
 340         {RSP_INIT,     -1, -1,SEQ_HUP,            401, 5, {0},             "+VLS=0\r"}, /* hang up */ //-1,-1?
 341         {RSP_OK,      401,401, -1,                402, 5},
 342         {RSP_ZVLS,    402,402,  0,                403, 5},
 343         {RSP_ZSAU,    403,403,ZSAU_DISCONNECT_REQ, -1,-1, {ACT_DEBUG}}, /* if not remote hup */
 344         //{RSP_ZSAU,    403,403,ZSAU_NULL,          401, 0, {ACT_ERROR}}, //DELETE//FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
 345         {RSP_ZSAU,    403,403,ZSAU_NULL,            0, 0, {ACT_DISCONNECT}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
 346         {RSP_NODEV,   401,403, -1,                  0, 0, {ACT_FAKEHUP}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
 347         {RSP_ERROR,   401,401, -1,                  0, 0, {ACT_ABORTHUP}},
 348         {EV_TIMEOUT,  401,403, -1,                  0, 0, {ACT_ABORTHUP}},
 349
 350         {EV_BC_CLOSED,  0,  0, -1,                  0,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME new constate + timeout
 351
 352         /* ring */
 353         {RSP_ZBC,     700,700, -1,                 -1,-1, {0}},
 354         {RSP_ZHLC,    700,700, -1,                 -1,-1, {0}},
 355         {RSP_NMBR,    700,700, -1,                 -1,-1, {0}},
 356         {RSP_ZCPN,    700,700, -1,                 -1,-1, {0}},
 357         {RSP_ZCTP,    700,700, -1,                 -1,-1, {0}},
 358         {EV_TIMEOUT,  700,700, -1,               720,720, {ACT_ICALL}},
 359         {EV_BC_CLOSED,720,720, -1,                  0,-1, {ACT_NOTIFY_BC_DOWN}},
 360
 361         /*accept icall*/
 362         {EV_ACCEPT,    -1, -1, -1,                 -1,-1, {ACT_ACCEPT}}, //FIXME
 363         {RSP_INIT,    720,720,SEQ_ACCEPT,         721, 5, {ACT_CMD+AT_PROTO}},
 364         {RSP_OK,      721,721, -1,                722, 5, {ACT_CMD+AT_ISO}},
 365         {RSP_OK,      722,722, -1,                723, 5, {0},             "+VLS=17\r"}, /* set "Endgeraetemodus" */
 366         {RSP_OK,      723,723, -1,                724, 5, {0}},
 367         {RSP_ZVLS,    724,724, 17,                750,50, {ACT_ACCEPTED}},
 368         {RSP_ERROR,   721,729, -1,                  0, 0, {ACT_ABORTACCEPT}},
 369         {EV_TIMEOUT,  721,729, -1,                  0, 0, {ACT_ABORTACCEPT}},
 370         {RSP_ZSAU,    700,729,ZSAU_NULL,            0, 0, {ACT_ABORTACCEPT}},
 371         {RSP_ZSAU,    700,729,ZSAU_ACTIVE,          0, 0, {ACT_ABORTACCEPT}},
 372         {RSP_ZSAU,    700,729,ZSAU_DISCONNECT_IND,  0, 0, {ACT_ABORTACCEPT}},
 373
 374         {EV_TIMEOUT,  750,750, -1,                  0, 0, {ACT_CONNTIMEOUT}},
 375
 376         /* misc. */
 377         {EV_PROTO_L2,  -1, -1, -1,                 -1,-1, {ACT_PROTO_L2}}, //FIXME
 378
 379         {RSP_ZCON,     -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 380         {RSP_ZCCR,     -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 381         {RSP_ZAOC,     -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 382         {RSP_ZCSTR,    -1, -1, -1,                 -1,-1, {ACT_DEBUG}}, //FIXME
 383
 384         {RSP_ZCAU,     -1, -1, -1,                 -1,-1, {ACT_ZCAU}},
 385         {RSP_NONE,     -1, -1, -1,                 -1,-1, {ACT_DEBUG}},
 386         {RSP_ANY,      -1, -1, -1,                 -1,-1, {ACT_WARN}},
 387         {RSP_LAST}
 388 };
 389
 390
 391 #if 0
 392 static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME
 393 {
 394         /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
 395
 396         {RSP_ANY,      -1, -1, -1,                 -1,-1, ACT_WARN,         NULL},
 397         {RSP_LAST,0,0,0,0,0,0}
 398 };
 399
 400 static struct reply_t tab_cid[] = /* no dle mode */ //FIXME
 401 {
 402         /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
 403
 404         {RSP_ANY,      -1, -1, -1,                 -1,-1, ACT_WARN,         NULL},
 405         {RSP_LAST,0,0,0,0,0,0}
 406 };
 407 #endif
 408
 409 static struct resp_type_t resp_type[]=
 410 {
 411         /*{"",          RSP_EMPTY,      RT_NOTHING},*/
 412         {"OK",          RSP_OK,         RT_NOTHING},
 413         {"ERROR",       RSP_ERROR,      RT_NOTHING},
 414         {"ZSAU",        RSP_ZSAU,       RT_ZSAU},
 415         {"ZCAU",        RSP_ZCAU,       RT_ZCAU},
 416         {"RING",        RSP_RING,       RT_RING},
 417         {"ZGCI",        RSP_ZGCI,       RT_NUMBER},
 418         {"ZVLS",        RSP_ZVLS,       RT_NUMBER},
 419         {"ZCTP",        RSP_ZCTP,       RT_NUMBER},
 420         {"ZDLE",        RSP_ZDLE,       RT_NUMBER},
 421         {"ZCFGT",       RSP_ZCFGT,      RT_NUMBER},
 422         {"ZCCR",        RSP_ZCCR,       RT_NUMBER},
 423         {"ZMWI",        RSP_ZMWI,       RT_NUMBER},
 424         {"ZHLC",        RSP_ZHLC,       RT_STRING},
 425         {"ZBC",         RSP_ZBC,        RT_STRING},
 426         {"NMBR",        RSP_NMBR,       RT_STRING},
 427         {"ZCPN",        RSP_ZCPN,       RT_STRING},
 428         {"ZCON",        RSP_ZCON,       RT_STRING},
 429         {"ZAOC",        RSP_ZAOC,       RT_STRING},
 430         {"ZCSTR",       RSP_ZCSTR,      RT_STRING},
 431         {"ZCFG",        RSP_ZCFG,       RT_HEX},
 432         {"ZLOG",        RSP_ZLOG,       RT_NOTHING},
 433         {"ZABINFO",     RSP_ZABINFO,    RT_NOTHING},
 434         {"ZSMLSTCHG",   RSP_ZSMLSTCHG,  RT_NOTHING},
 435         {NULL,0,0}
 436 };
 437
 438 /*
 439  * Get integer from char-pointer
 440  */
 441 static int isdn_getnum(char *p)
 442 {
 443         int v = -1;
 444
 445         gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
 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  */
 457 static int isdn_gethex(char *p)
 458 {
 459         int v = 0;
 460         int c;
 461
 462         gig_dbg(DEBUG_TRANSCMD, "string: %s", p);
 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
 485 /* retrieve CID from parsed response
 486  * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
 487  */
 488 static int cid_of_response(char *s)
 489 {
 490         int cid;
 491
 492         if (s[-1] != ';')
 493                 return 0;       /* no CID separator */
 494         cid = isdn_getnum(s);
 495         if (cid < 0)
 496                 return 0;       /* CID not numeric */
 497         if (cid < 1 || cid > 65535)
 498                 return -1;      /* CID out of range */
 499         return cid;
 500         //FIXME is ;<digit>+ at end of non-CID response really impossible?
 501 }
 502
 503 /* This function will be called via task queue from the callback handler.
 504  * We received a modem response and have to handle it..
 505  */
 506 void gigaset_handle_modem_response(struct cardstate *cs)
 507 {
 508         unsigned char *argv[MAX_REC_PARAMS + 1];
 509         int params;
 510         int i, j;
 511         struct resp_type_t *rt;
 512         int curarg;
 513         unsigned long flags;
 514         unsigned next, tail, head;
 515         struct event_t *event;
 516         int resp_code;
 517         int param_type;
 518         int abort;
 519         size_t len;
 520         int cid;
 521         int rawstring;
 522
 523         len = cs->cbytes;
 524         if (!len) {
 525                 /* ignore additional LFs/CRs (M10x config mode or cx100) */
 526                 gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
 527                 return;
 528         }
 529         cs->respdata[len] = 0;
 530         gig_dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
 531         argv[0] = cs->respdata;
 532         params = 1;
 533         if (cs->at_state.getstring) {
 534                 /* getstring only allowed without cid at the moment */
 535                 cs->at_state.getstring = 0;
 536                 rawstring = 1;
 537                 cid = 0;
 538         } else {
 539                 /* parse line */
 540                 for (i = 0; i < len; i++)
 541                         switch (cs->respdata[i]) {
 542                         case ';':
 543                         case ',':
 544                         case '=':
 545                                 if (params > MAX_REC_PARAMS) {
 546                                         dev_warn(cs->dev,
 547                                            "too many parameters in response\n");
 548                                         /* need last parameter (might be CID) */
 549                                         params--;
 550                                 }
 551                                 argv[params++] = cs->respdata + i + 1;
 552                         }
 553
 554                 rawstring = 0;
 555                 cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
 556                 if (cid < 0) {
 557                         gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
 558                                           NULL, 0, NULL);
 559                         return;
 560                 }
 561
 562                 for (j = 1; j < params; ++j)
 563                         argv[j][-1] = 0;
 564
 565                 gig_dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
 566                 if (cid) {
 567                         --params;
 568                         gig_dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
 569                 }
 570                 gig_dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
 571                 for (j = 1; j < params; j++)
 572                         gig_dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
 573         }
 574
 575         spin_lock_irqsave(&cs->ev_lock, flags);
 576         head = cs->ev_head;
 577         tail = cs->ev_tail;
 578
 579         abort = 1;
 580         curarg = 0;
 581         while (curarg < params) {
 582                 next = (tail + 1) % MAX_EVENTS;
 583                 if (unlikely(next == head)) {
 584                         dev_err(cs->dev, "event queue full\n");
 585                         break;
 586                 }
 587
 588                 event = cs->events + tail;
 589                 event->at_state = NULL;
 590                 event->cid = cid;
 591                 event->ptr = NULL;
 592                 event->arg = NULL;
 593                 tail = next;
 594
 595                 if (rawstring) {
 596                         resp_code = RSP_STRING;
 597                         param_type = RT_STRING;
 598                 } else {
 599                         for (rt = resp_type; rt->response; ++rt)
 600                                 if (!strcmp(argv[curarg], rt->response))
 601                                         break;
 602
 603                         if (!rt->response) {
 604                                 event->type = RSP_UNKNOWN;
 605                                 dev_warn(cs->dev,
 606                                          "unknown modem response: %s\n",
 607                                          argv[curarg]);
 608                                 break;
 609                         }
 610
 611                         resp_code = rt->resp_code;
 612                         param_type = rt->type;
 613                         ++curarg;
 614                 }
 615
 616                 event->type = resp_code;
 617
 618                 switch (param_type) {
 619                 case RT_NOTHING:
 620                         break;
 621                 case RT_RING:
 622                         if (!cid) {
 623                                 dev_err(cs->dev,
 624                                         "received RING without CID!\n");
 625                                 event->type = RSP_INVAL;
 626                                 abort = 1;
 627                         } else {
 628                                 event->cid = 0;
 629                                 event->parameter = cid;
 630                                 abort = 0;
 631                         }
 632                         break;
 633                 case RT_ZSAU:
 634                         if (curarg >= params) {
 635                                 event->parameter = ZSAU_NONE;
 636                                 break;
 637                         }
 638                         if (!strcmp(argv[curarg], "OUTGOING_CALL_PROCEEDING"))
 639                                 event->parameter = ZSAU_OUTGOING_CALL_PROCEEDING;
 640                         else if (!strcmp(argv[curarg], "CALL_DELIVERED"))
 641                                 event->parameter = ZSAU_CALL_DELIVERED;
 642                         else if (!strcmp(argv[curarg], "ACTIVE"))
 643                                 event->parameter = ZSAU_ACTIVE;
 644                         else if (!strcmp(argv[curarg], "DISCONNECT_IND"))
 645                                 event->parameter = ZSAU_DISCONNECT_IND;
 646                         else if (!strcmp(argv[curarg], "NULL"))
 647                                 event->parameter = ZSAU_NULL;
 648                         else if (!strcmp(argv[curarg], "DISCONNECT_REQ"))
 649                                 event->parameter = ZSAU_DISCONNECT_REQ;
 650                         else {
 651                                 event->parameter = ZSAU_UNKNOWN;
 652                                 dev_warn(cs->dev,
 653                                         "%s: unknown parameter %s after ZSAU\n",
 654                                          __func__, argv[curarg]);
 655                         }
 656                         ++curarg;
 657                         break;
 658                 case RT_STRING:
 659                         if (curarg < params) {
 660                                 event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
 661                                 if (!event->ptr)
 662                                         dev_err(cs->dev, "out of memory\n");
 663                                 ++curarg;
 664                         }
 665 #ifdef CONFIG_GIGASET_DEBUG
 666                         if (!event->ptr)
 667                                 gig_dbg(DEBUG_CMD, "string==NULL");
 668                         else
 669                                 gig_dbg(DEBUG_CMD, "string==%s",
 670                                         (char *) event->ptr);
 671 #endif
 672                         break;
 673                 case RT_ZCAU:
 674                         event->parameter = -1;
 675                         if (curarg + 1 < params) {
 676                                 i = isdn_gethex(argv[curarg]);
 677                                 j = isdn_gethex(argv[curarg + 1]);
 678                                 if (i >= 0 && i < 256 && j >= 0 && j < 256)
 679                                         event->parameter = (unsigned) i << 8
 680                                                            | j;
 681                                 curarg += 2;
 682                         } else
 683                                 curarg = params - 1;
 684                         break;
 685                 case RT_NUMBER:
 686                 case RT_HEX:
 687                         if (curarg < params) {
 688                                 if (param_type == RT_HEX)
 689                                         event->parameter =
 690                                                 isdn_gethex(argv[curarg]);
 691                                 else
 692                                         event->parameter =
 693                                                 isdn_getnum(argv[curarg]);
 694                                 ++curarg;
 695                         } else
 696                                 event->parameter = -1;
 697 #ifdef CONFIG_GIGASET_DEBUG
 698                         gig_dbg(DEBUG_CMD, "parameter==%d", event->parameter);
 699 #endif
 700                         break;
 701                 }
 702
 703                 if (resp_code == RSP_ZDLE)
 704                         cs->dle = event->parameter;
 705
 706                 if (abort)
 707                         break;
 708         }
 709
 710         cs->ev_tail = tail;
 711         spin_unlock_irqrestore(&cs->ev_lock, flags);
 712
 713         if (curarg != params)
 714                 gig_dbg(DEBUG_ANY,
 715                         "invalid number of processed parameters: %d/%d",
 716                         curarg, params);
 717 }
 718 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
 719
 720 /* disconnect
 721  * process closing of connection associated with given AT state structure
 722  */
 723 static void disconnect(struct at_state_t **at_state_p)
 724 {
 725         unsigned long flags;
 726         struct bc_state *bcs = (*at_state_p)->bcs;
 727         struct cardstate *cs = (*at_state_p)->cs;
 728
 729         spin_lock_irqsave(&cs->lock, flags);
 730         ++(*at_state_p)->seq_index;
 731
 732         /* revert to selected idle mode */
 733         if (!cs->cidmode) {
 734                 cs->at_state.pending_commands |= PC_UMMODE;
 735                 atomic_set(&cs->commands_pending, 1); //FIXME
 736                 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
 737         }
 738         spin_unlock_irqrestore(&cs->lock, flags);
 739
 740         if (bcs) {
 741                 /* B channel assigned: invoke hardware specific handler */
 742                 cs->ops->close_bchannel(bcs);
 743         } else {
 744                 /* no B channel assigned: just deallocate */
 745                 spin_lock_irqsave(&cs->lock, flags);
 746                 list_del(&(*at_state_p)->list);
 747                 kfree(*at_state_p);
 748                 *at_state_p = NULL;
 749                 spin_unlock_irqrestore(&cs->lock, flags);
 750         }
 751 }
 752
 753 /* get_free_channel
 754  * get a free AT state structure: either one of those associated with the
 755  * B channels of the Gigaset device, or if none of those is available,
 756  * a newly allocated one with bcs=NULL
 757  * The structure should be freed by calling disconnect() after use.
 758  */
 759 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
 760                                                   int cid)
 761 /* cids: >0: siemens-cid
 762           0: without cid
 763          -1: no cid assigned yet
 764 */
 765 {
 766         unsigned long flags;
 767         int i;
 768         struct at_state_t *ret;
 769
 770         for (i = 0; i < cs->channels; ++i)
 771                 if (gigaset_get_channel(cs->bcs + i)) {
 772                         ret = &cs->bcs[i].at_state;
 773                         ret->cid = cid;
 774                         return ret;
 775                 }
 776
 777         spin_lock_irqsave(&cs->lock, flags);
 778         ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
 779         if (ret) {
 780                 gigaset_at_init(ret, NULL, cs, cid);
 781                 list_add(&ret->list, &cs->temp_at_states);
 782         }
 783         spin_unlock_irqrestore(&cs->lock, flags);
 784         return ret;
 785 }
 786
 787 static void init_failed(struct cardstate *cs, int mode)
 788 {
 789         int i;
 790         struct at_state_t *at_state;
 791
 792         cs->at_state.pending_commands &= ~PC_INIT;
 793         atomic_set(&cs->mode, mode);
 794         atomic_set(&cs->mstate, MS_UNINITIALIZED);
 795         gigaset_free_channels(cs);
 796         for (i = 0; i < cs->channels; ++i) {
 797                 at_state = &cs->bcs[i].at_state;
 798                 if (at_state->pending_commands & PC_CID) {
 799                         at_state->pending_commands &= ~PC_CID;
 800                         at_state->pending_commands |= PC_NOCID;
 801                         atomic_set(&cs->commands_pending, 1);
 802                 }
 803         }
 804 }
 805
 806 static void schedule_init(struct cardstate *cs, int state)
 807 {
 808         if (cs->at_state.pending_commands & PC_INIT) {
 809                 gig_dbg(DEBUG_CMD, "not scheduling PC_INIT again");
 810                 return;
 811         }
 812         atomic_set(&cs->mstate, state);
 813         atomic_set(&cs->mode, M_UNKNOWN);
 814         gigaset_block_channels(cs);
 815         cs->at_state.pending_commands |= PC_INIT;
 816         atomic_set(&cs->commands_pending, 1);
 817         gig_dbg(DEBUG_CMD, "Scheduling PC_INIT");
 818 }
 819
 820 /* Add "AT" to a command, add the cid, dle encode it, send the result to the
 821    hardware. */
 822 static void send_command(struct cardstate *cs, const char *cmd, int cid,
 823                          int dle, gfp_t kmallocflags)
 824 {
 825         size_t cmdlen, buflen;
 826         char *cmdpos, *cmdbuf, *cmdtail;
 827
 828         cmdlen = strlen(cmd);
 829         buflen = 11 + cmdlen;
 830         if (unlikely(buflen <= cmdlen)) {
 831                 dev_err(cs->dev, "integer overflow in buflen\n");
 832                 return;
 833         }
 834
 835         cmdbuf = kmalloc(buflen, kmallocflags);
 836         if (unlikely(!cmdbuf)) {
 837                 dev_err(cs->dev, "out of memory\n");
 838                 return;
 839         }
 840
 841         cmdpos = cmdbuf + 9;
 842         cmdtail = cmdpos + cmdlen;
 843         memcpy(cmdpos, cmd, cmdlen);
 844
 845         if (cid > 0 && cid <= 65535) {
 846                 do {
 847                         *--cmdpos = '0' + cid % 10;
 848                         cid /= 10;
 849                         ++cmdlen;
 850                 } while (cid);
 851         }
 852
 853         cmdlen += 2;
 854         *--cmdpos = 'T';
 855         *--cmdpos = 'A';
 856
 857         if (dle) {
 858                 cmdlen += 4;
 859                 *--cmdpos = '(';
 860                 *--cmdpos = 0x10;
 861                 *cmdtail++ = 0x10;
 862                 *cmdtail++ = ')';
 863         }
 864
 865         cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
 866         kfree(cmdbuf);
 867 }
 868
 869 static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
 870 {
 871         struct at_state_t *at_state;
 872         int i;
 873         unsigned long flags;
 874
 875         if (cid == 0)
 876                 return &cs->at_state;
 877
 878         for (i = 0; i < cs->channels; ++i)
 879                 if (cid == cs->bcs[i].at_state.cid)
 880                         return &cs->bcs[i].at_state;
 881
 882         spin_lock_irqsave(&cs->lock, flags);
 883
 884         list_for_each_entry(at_state, &cs->temp_at_states, list)
 885                 if (cid == at_state->cid) {
 886                         spin_unlock_irqrestore(&cs->lock, flags);
 887                         return at_state;
 888                 }
 889
 890         spin_unlock_irqrestore(&cs->lock, flags);
 891
 892         return NULL;
 893 }
 894
 895 static void bchannel_down(struct bc_state *bcs)
 896 {
 897         if (bcs->chstate & CHS_B_UP) {
 898                 bcs->chstate &= ~CHS_B_UP;
 899                 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
 900         }
 901
 902         if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
 903                 bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
 904                 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
 905         }
 906
 907         gigaset_free_channel(bcs);
 908
 909         gigaset_bcs_reinit(bcs);
 910 }
 911
 912 static void bchannel_up(struct bc_state *bcs)
 913 {
 914         if (!(bcs->chstate & CHS_D_UP)) {
 915                 dev_notice(bcs->cs->dev, "%s: D channel not up\n", __func__);
 916                 bcs->chstate |= CHS_D_UP;
 917                 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
 918         }
 919
 920         if (bcs->chstate & CHS_B_UP) {
 921                 dev_notice(bcs->cs->dev, "%s: B channel already up\n",
 922                            __func__);
 923                 return;
 924         }
 925
 926         bcs->chstate |= CHS_B_UP;
 927         gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
 928 }
 929
 930 static void start_dial(struct at_state_t *at_state, void *data, unsigned seq_index)
 931 {
 932         struct bc_state *bcs = at_state->bcs;
 933         struct cardstate *cs = at_state->cs;
 934         int retval;
 935         unsigned long flags;
 936
 937         bcs->chstate |= CHS_NOTIFY_LL;
 938
 939         spin_lock_irqsave(&cs->lock, flags);
 940         if (at_state->seq_index != seq_index) {
 941                 spin_unlock_irqrestore(&cs->lock, flags);
 942                 goto error;
 943         }
 944         spin_unlock_irqrestore(&cs->lock, flags);
 945
 946         retval = gigaset_isdn_setup_dial(at_state, data);
 947         if (retval != 0)
 948                 goto error;
 949
 950
 951         at_state->pending_commands |= PC_CID;
 952         gig_dbg(DEBUG_CMD, "Scheduling PC_CID");
 953         atomic_set(&cs->commands_pending, 1);
 954         return;
 955
 956 error:
 957         at_state->pending_commands |= PC_NOCID;
 958         gig_dbg(DEBUG_CMD, "Scheduling PC_NOCID");
 959         atomic_set(&cs->commands_pending, 1);
 960         return;
 961 }
 962
 963 static void start_accept(struct at_state_t *at_state)
 964 {
 965         struct cardstate *cs = at_state->cs;
 966         int retval;
 967
 968         retval = gigaset_isdn_setup_accept(at_state);
 969
 970         if (retval == 0) {
 971                 at_state->pending_commands |= PC_ACCEPT;
 972                 gig_dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
 973                 atomic_set(&cs->commands_pending, 1);
 974         } else {
 975                 //FIXME
 976                 at_state->pending_commands |= PC_HUP;
 977                 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
 978                 atomic_set(&cs->commands_pending, 1);
 979         }
 980 }
 981
 982 static void do_start(struct cardstate *cs)
 983 {
 984         gigaset_free_channels(cs);
 985
 986         if (atomic_read(&cs->mstate) != MS_LOCKED)
 987                 schedule_init(cs, MS_INIT);
 988
 989         cs->isdn_up = 1;
 990         gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
 991                                         // FIXME: not in locked mode
 992                                         // FIXME 2: only after init sequence
 993
 994         cs->waiting = 0;
 995         wake_up(&cs->waitqueue);
 996 }
 997
 998 static void finish_shutdown(struct cardstate *cs)
 999 {
1000         if (atomic_read(&cs->mstate) != MS_LOCKED) {
1001                 atomic_set(&cs->mstate, MS_UNINITIALIZED);
1002                 atomic_set(&cs->mode, M_UNKNOWN);
1003         }
1004
1005         /* Tell the LL that the device is not available .. */
1006         if (cs->isdn_up) {
1007                 cs->isdn_up = 0;
1008                 gigaset_i4l_cmd(cs, ISDN_STAT_STOP);
1009         }
1010
1011         /* The rest is done by cleanup_cs () in user mode. */
1012
1013         cs->cmd_result = -ENODEV;
1014         cs->waiting = 0;
1015         wake_up_interruptible(&cs->waitqueue);
1016 }
1017
1018 static void do_shutdown(struct cardstate *cs)
1019 {
1020         gigaset_block_channels(cs);
1021
1022         if (atomic_read(&cs->mstate) == MS_READY) {
1023                 atomic_set(&cs->mstate, MS_SHUTDOWN);
1024                 cs->at_state.pending_commands |= PC_SHUTDOWN;
1025                 atomic_set(&cs->commands_pending, 1);
1026                 gig_dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN");
1027         } else
1028                 finish_shutdown(cs);
1029 }
1030
1031 static void do_stop(struct cardstate *cs)
1032 {
1033         unsigned long flags;
1034
1035         spin_lock_irqsave(&cs->lock, flags);
1036         cs->connected = 0;
1037         spin_unlock_irqrestore(&cs->lock, flags);
1038
1039         do_shutdown(cs);
1040 }
1041
1042 /* Entering cid mode or getting a cid failed:
1043  * try to initialize the device and try again.
1044  *
1045  * channel >= 0: getting cid for the channel failed
1046  * channel < 0:  entering cid mode failed
1047  *
1048  * returns 0 on failure
1049  */
1050 static int reinit_and_retry(struct cardstate *cs, int channel)
1051 {
1052         int i;
1053
1054         if (--cs->retry_count <= 0)
1055                 return 0;
1056
1057         for (i = 0; i < cs->channels; ++i)
1058                 if (cs->bcs[i].at_state.cid > 0)
1059                         return 0;
1060
1061         if (channel < 0)
1062                 dev_warn(cs->dev,
1063                     "Could not enter cid mode. Reinit device and try again.\n");
1064         else {
1065                 dev_warn(cs->dev,
1066                     "Could not get a call id. Reinit device and try again.\n");
1067                 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1068         }
1069         schedule_init(cs, MS_INIT);
1070         return 1;
1071 }
1072
1073 static int at_state_invalid(struct cardstate *cs,
1074                             struct at_state_t *test_ptr)
1075 {
1076         unsigned long flags;
1077         unsigned channel;
1078         struct at_state_t *at_state;
1079         int retval = 0;
1080
1081         spin_lock_irqsave(&cs->lock, flags);
1082
1083         if (test_ptr == &cs->at_state)
1084                 goto exit;
1085
1086         list_for_each_entry(at_state, &cs->temp_at_states, list)
1087                 if (at_state == test_ptr)
1088                         goto exit;
1089
1090         for (channel = 0; channel < cs->channels; ++channel)
1091                 if (&cs->bcs[channel].at_state == test_ptr)
1092                         goto exit;
1093
1094         retval = 1;
1095 exit:
1096         spin_unlock_irqrestore(&cs->lock, flags);
1097         return retval;
1098 }
1099
1100 static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
1101                          struct at_state_t **p_at_state)
1102 {
1103         int retval;
1104         struct at_state_t *at_state = *p_at_state;
1105
1106         retval = gigaset_isdn_icall(at_state);
1107         switch (retval) {
1108         case ICALL_ACCEPT:
1109                 break;
1110         default:
1111                 dev_err(cs->dev, "internal error: disposition=%d\n", retval);
1112                 /* --v-- fall through --v-- */
1113         case ICALL_IGNORE:
1114         case ICALL_REJECT:
1115                 /* hang up actively
1116                  * Device doc says that would reject the call.
1117                  * In fact it doesn't.
1118                  */
1119                 at_state->pending_commands |= PC_HUP;
1120                 atomic_set(&cs->commands_pending, 1);
1121                 break;
1122         }
1123 }
1124
1125 static int do_lock(struct cardstate *cs)
1126 {
1127         int mode;
1128         int i;
1129
1130         switch (atomic_read(&cs->mstate)) {
1131         case MS_UNINITIALIZED:
1132         case MS_READY:
1133                 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1134                     cs->at_state.pending_commands)
1135                         return -EBUSY;
1136
1137                 for (i = 0; i < cs->channels; ++i)
1138                         if (cs->bcs[i].at_state.pending_commands)
1139                                 return -EBUSY;
1140
1141                 if (!gigaset_get_channels(cs))
1142                         return -EBUSY;
1143
1144                 break;
1145         case MS_LOCKED:
1146                 //retval = -EACCES;
1147                 break;
1148         default:
1149                 return -EBUSY;
1150         }
1151
1152         mode = atomic_read(&cs->mode);
1153         atomic_set(&cs->mstate, MS_LOCKED);
1154         atomic_set(&cs->mode, M_UNKNOWN);
1155
1156         return mode;
1157 }
1158
1159 static int do_unlock(struct cardstate *cs)
1160 {
1161         if (atomic_read(&cs->mstate) != MS_LOCKED)
1162                 return -EINVAL;
1163
1164         atomic_set(&cs->mstate, MS_UNINITIALIZED);
1165         atomic_set(&cs->mode, M_UNKNOWN);
1166         gigaset_free_channels(cs);
1167         if (cs->connected)
1168                 schedule_init(cs, MS_INIT);
1169
1170         return 0;
1171 }
1172
1173 static void do_action(int action, struct cardstate *cs,
1174                       struct bc_state *bcs,
1175                       struct at_state_t **p_at_state, char **pp_command,
1176                       int *p_genresp, int *p_resp_code,
1177                       struct event_t *ev)
1178 {
1179         struct at_state_t *at_state = *p_at_state;
1180         struct at_state_t *at_state2;
1181         unsigned long flags;
1182
1183         int channel;
1184
1185         unsigned char *s, *e;
1186         int i;
1187         unsigned long val;
1188
1189         switch (action) {
1190         case ACT_NOTHING:
1191                 break;
1192         case ACT_TIMEOUT:
1193                 at_state->waiting = 1;
1194                 break;
1195         case ACT_INIT:
1196                 cs->at_state.pending_commands &= ~PC_INIT;
1197                 cs->cur_at_seq = SEQ_NONE;
1198                 atomic_set(&cs->mode, M_UNIMODEM);
1199                 spin_lock_irqsave(&cs->lock, flags);
1200                 if (!cs->cidmode) {
1201                         spin_unlock_irqrestore(&cs->lock, flags);
1202                         gigaset_free_channels(cs);
1203                         atomic_set(&cs->mstate, MS_READY);
1204                         break;
1205                 }
1206                 spin_unlock_irqrestore(&cs->lock, flags);
1207                 cs->at_state.pending_commands |= PC_CIDMODE;
1208                 atomic_set(&cs->commands_pending, 1);
1209                 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1210                 break;
1211         case ACT_FAILINIT:
1212                 dev_warn(cs->dev, "Could not initialize the device.\n");
1213                 cs->dle = 0;
1214                 init_failed(cs, M_UNKNOWN);
1215                 cs->cur_at_seq = SEQ_NONE;
1216                 break;
1217         case ACT_CONFIGMODE:
1218                 init_failed(cs, M_CONFIG);
1219                 cs->cur_at_seq = SEQ_NONE;
1220                 break;
1221         case ACT_SETDLE1:
1222                 cs->dle = 1;
1223                 /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
1224                 cs->inbuf[0].inputstate &=
1225                         ~(INS_command | INS_DLE_command);
1226                 break;
1227         case ACT_SETDLE0:
1228                 cs->dle = 0;
1229                 cs->inbuf[0].inputstate =
1230                         (cs->inbuf[0].inputstate & ~INS_DLE_command)
1231                         | INS_command;
1232                 break;
1233         case ACT_CMODESET:
1234                 if (atomic_read(&cs->mstate) == MS_INIT ||
1235                     atomic_read(&cs->mstate) == MS_RECOVER) {
1236                         gigaset_free_channels(cs);
1237                         atomic_set(&cs->mstate, MS_READY);
1238                 }
1239                 atomic_set(&cs->mode, M_CID);
1240                 cs->cur_at_seq = SEQ_NONE;
1241                 break;
1242         case ACT_UMODESET:
1243                 atomic_set(&cs->mode, M_UNIMODEM);
1244                 cs->cur_at_seq = SEQ_NONE;
1245                 break;
1246         case ACT_FAILCMODE:
1247                 cs->cur_at_seq = SEQ_NONE;
1248                 if (atomic_read(&cs->mstate) == MS_INIT ||
1249                     atomic_read(&cs->mstate) == MS_RECOVER) {
1250                         init_failed(cs, M_UNKNOWN);
1251                         break;
1252                 }
1253                 if (!reinit_and_retry(cs, -1))
1254                         schedule_init(cs, MS_RECOVER);
1255                 break;
1256         case ACT_FAILUMODE:
1257                 cs->cur_at_seq = SEQ_NONE;
1258                 schedule_init(cs, MS_RECOVER);
1259                 break;
1260         case ACT_HUPMODEM:
1261                 /* send "+++" (hangup in unimodem mode) */
1262                 cs->ops->write_cmd(cs, "+++", 3, NULL);
1263                 break;
1264         case ACT_RING:
1265                 /* get fresh AT state structure for new CID */
1266                 at_state2 = get_free_channel(cs, ev->parameter);
1267                 if (!at_state2) {
1268                         dev_warn(cs->dev,
1269                         "RING ignored: could not allocate channel structure\n");
1270                         break;
1271                 }
1272
1273                 /* initialize AT state structure
1274                  * note that bcs may be NULL if no B channel is free
1275                  */
1276                 at_state2->ConState = 700;
1277                 kfree(at_state2->str_var[STR_NMBR]);
1278                 at_state2->str_var[STR_NMBR] = NULL;
1279                 kfree(at_state2->str_var[STR_ZCPN]);
1280                 at_state2->str_var[STR_ZCPN] = NULL;
1281                 kfree(at_state2->str_var[STR_ZBC]);
1282                 at_state2->str_var[STR_ZBC] = NULL;
1283                 kfree(at_state2->str_var[STR_ZHLC]);
1284                 at_state2->str_var[STR_ZHLC] = NULL;
1285                 at_state2->int_var[VAR_ZCTP] = -1;
1286
1287                 spin_lock_irqsave(&cs->lock, flags);
1288                 at_state2->timer_expires = RING_TIMEOUT;
1289                 at_state2->timer_active = 1;
1290                 spin_unlock_irqrestore(&cs->lock, flags);
1291                 break;
1292         case ACT_ICALL:
1293                 handle_icall(cs, bcs, p_at_state);
1294                 at_state = *p_at_state;
1295                 break;
1296         case ACT_FAILSDOWN:
1297                 dev_warn(cs->dev, "Could not shut down the device.\n");
1298                 /* fall through */
1299         case ACT_FAKESDOWN:
1300         case ACT_SDOWN:
1301                 cs->cur_at_seq = SEQ_NONE;
1302                 finish_shutdown(cs);
1303                 break;
1304         case ACT_CONNECT:
1305                 if (cs->onechannel) {
1306                         at_state->pending_commands |= PC_DLE1;
1307                         atomic_set(&cs->commands_pending, 1);
1308                         break;
1309                 }
1310                 bcs->chstate |= CHS_D_UP;
1311                 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1312                 cs->ops->init_bchannel(bcs);
1313                 break;
1314         case ACT_DLE1:
1315                 cs->cur_at_seq = SEQ_NONE;
1316                 bcs = cs->bcs + cs->curchannel;
1317
1318                 bcs->chstate |= CHS_D_UP;
1319                 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1320                 cs->ops->init_bchannel(bcs);
1321                 break;
1322         case ACT_FAKEHUP:
1323                 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1324                 /* fall through */
1325         case ACT_DISCONNECT:
1326                 cs->cur_at_seq = SEQ_NONE;
1327                 at_state->cid = -1;
1328                 if (bcs && cs->onechannel && cs->dle) {
1329                         /* Check for other open channels not needed:
1330                          * DLE only used for M10x with one B channel.
1331                          */
1332                         at_state->pending_commands |= PC_DLE0;
1333                         atomic_set(&cs->commands_pending, 1);
1334                 } else {
1335                         disconnect(p_at_state);
1336                         at_state = *p_at_state;
1337                 }
1338                 break;
1339         case ACT_FAKEDLE0:
1340                 at_state->int_var[VAR_ZDLE] = 0;
1341                 cs->dle = 0;
1342                 /* fall through */
1343         case ACT_DLE0:
1344                 cs->cur_at_seq = SEQ_NONE;
1345                 at_state2 = &cs->bcs[cs->curchannel].at_state;
1346                 disconnect(&at_state2);
1347                 break;
1348         case ACT_ABORTHUP:
1349                 cs->cur_at_seq = SEQ_NONE;
1350                 dev_warn(cs->dev, "Could not hang up.\n");
1351                 at_state->cid = -1;
1352                 if (bcs && cs->onechannel)
1353                         at_state->pending_commands |= PC_DLE0;
1354                 else {
1355                         disconnect(p_at_state);
1356                         at_state = *p_at_state;
1357                 }
1358                 schedule_init(cs, MS_RECOVER);
1359                 break;
1360         case ACT_FAILDLE0:
1361                 cs->cur_at_seq = SEQ_NONE;
1362                 dev_warn(cs->dev, "Could not leave DLE mode.\n");
1363                 at_state2 = &cs->bcs[cs->curchannel].at_state;
1364                 disconnect(&at_state2);
1365                 schedule_init(cs, MS_RECOVER);
1366                 break;
1367         case ACT_FAILDLE1:
1368                 cs->cur_at_seq = SEQ_NONE;
1369                 dev_warn(cs->dev,
1370                          "Could not enter DLE mode. Trying to hang up.\n");
1371                 channel = cs->curchannel;
1372                 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1373                 atomic_set(&cs->commands_pending, 1);
1374                 break;
1375
1376         case ACT_CID: /* got cid; start dialing */
1377                 cs->cur_at_seq = SEQ_NONE;
1378                 channel = cs->curchannel;
1379                 if (ev->parameter > 0 && ev->parameter <= 65535) {
1380                         cs->bcs[channel].at_state.cid = ev->parameter;
1381                         cs->bcs[channel].at_state.pending_commands |=
1382                                 PC_DIAL;
1383                         atomic_set(&cs->commands_pending, 1);
1384                         break;
1385                 }
1386                 /* fall through */
1387         case ACT_FAILCID:
1388                 cs->cur_at_seq = SEQ_NONE;
1389                 channel = cs->curchannel;
1390                 if (!reinit_and_retry(cs, channel)) {
1391                         dev_warn(cs->dev,
1392                                  "Could not get a call ID. Cannot dial.\n");
1393                         at_state2 = &cs->bcs[channel].at_state;
1394                         disconnect(&at_state2);
1395                 }
1396                 break;
1397         case ACT_ABORTCID:
1398                 cs->cur_at_seq = SEQ_NONE;
1399                 at_state2 = &cs->bcs[cs->curchannel].at_state;
1400                 disconnect(&at_state2);
1401                 break;
1402
1403         case ACT_DIALING:
1404         case ACT_ACCEPTED:
1405                 cs->cur_at_seq = SEQ_NONE;
1406                 break;
1407
1408         case ACT_ABORTACCEPT:   /* hangup/error/timeout during ICALL processing */
1409                 disconnect(p_at_state);
1410                 at_state = *p_at_state;
1411                 break;
1412
1413         case ACT_ABORTDIAL:     /* error/timeout during dial preparation */
1414                 cs->cur_at_seq = SEQ_NONE;
1415                 at_state->pending_commands |= PC_HUP;
1416                 atomic_set(&cs->commands_pending, 1);
1417                 break;
1418
1419         case ACT_REMOTEREJECT:  /* DISCONNECT_IND after dialling */
1420         case ACT_CONNTIMEOUT:   /* timeout waiting for ZSAU=ACTIVE */
1421         case ACT_REMOTEHUP:     /* DISCONNECT_IND with established connection */
1422                 at_state->pending_commands |= PC_HUP;
1423                 atomic_set(&cs->commands_pending, 1);
1424                 break;
1425         case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1426                                are not handled properly anymore */
1427                 at_state->getstring = 1;
1428                 break;
1429         case ACT_SETVER:
1430                 if (!ev->ptr) {
1431                         *p_genresp = 1;
1432                         *p_resp_code = RSP_ERROR;
1433                         break;
1434                 }
1435                 s = ev->ptr;
1436
1437                 if (!strcmp(s, "OK")) {
1438                         *p_genresp = 1;
1439                         *p_resp_code = RSP_ERROR;
1440                         break;
1441                 }
1442
1443                 for (i = 0; i < 4; ++i) {
1444                         val = simple_strtoul(s, (char **) &e, 10);
1445                         if (val > INT_MAX || e == s)
1446                                 break;
1447                         if (i == 3) {
1448                                 if (*e)
1449                                         break;
1450                         } else if (*e != '.')
1451                                 break;
1452                         else
1453                                 s = e + 1;
1454                         cs->fwver[i] = val;
1455                 }
1456                 if (i != 4) {
1457                         *p_genresp = 1;
1458                         *p_resp_code = RSP_ERROR;
1459                         break;
1460                 }
1461                 /*at_state->getstring = 1;*/
1462                 cs->gotfwver = 0;
1463                 break;
1464         case ACT_GOTVER:
1465                 if (cs->gotfwver == 0) {
1466                         cs->gotfwver = 1;
1467                         gig_dbg(DEBUG_ANY,
1468                                 "firmware version %02d.%03d.%02d.%02d",
1469                                 cs->fwver[0], cs->fwver[1],
1470                                 cs->fwver[2], cs->fwver[3]);
1471                         break;
1472                 }
1473                 /* fall through */
1474         case ACT_FAILVER:
1475                 cs->gotfwver = -1;
1476                 dev_err(cs->dev, "could not read firmware version.\n");
1477                 break;
1478 #ifdef CONFIG_GIGASET_DEBUG
1479         case ACT_ERROR:
1480                 *p_genresp = 1;
1481                 *p_resp_code = RSP_ERROR;
1482                 break;
1483         case ACT_TEST:
1484                 {
1485                         static int count = 3; //2; //1;
1486                         *p_genresp = 1;
1487                         *p_resp_code = count ? RSP_ERROR : RSP_OK;
1488                         if (count > 0)
1489                                 --count;
1490                 }
1491                 break;
1492 #endif
1493         case ACT_DEBUG:
1494                 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1495                         __func__, ev->type, at_state->ConState);
1496                 break;
1497         case ACT_WARN:
1498                 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1499                          __func__, ev->type, at_state->ConState);
1500                 break;
1501         case ACT_ZCAU:
1502                 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1503                          ev->parameter, at_state->ConState);
1504                 break;
1505
1506         /* events from the LL */
1507         case ACT_DIAL:
1508                 start_dial(at_state, ev->ptr, ev->parameter);
1509                 break;
1510         case ACT_ACCEPT:
1511                 start_accept(at_state);
1512                 break;
1513         case ACT_PROTO_L2:
1514                 gig_dbg(DEBUG_CMD, "set protocol to %u",
1515                         (unsigned) ev->parameter);
1516                 at_state->bcs->proto2 = ev->parameter;
1517                 break;
1518         case ACT_HUP:
1519                 at_state->pending_commands |= PC_HUP;
1520                 atomic_set(&cs->commands_pending, 1);
1521                 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
1522                 break;
1523
1524         /* hotplug events */
1525         case ACT_STOP:
1526                 do_stop(cs);
1527                 break;
1528         case ACT_START:
1529                 do_start(cs);
1530                 break;
1531
1532         /* events from the interface */ // FIXME without ACT_xxxx?
1533         case ACT_IF_LOCK:
1534                 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1535                 cs->waiting = 0;
1536                 wake_up(&cs->waitqueue);
1537                 break;
1538         case ACT_IF_VER:
1539                 if (ev->parameter != 0)
1540                         cs->cmd_result = -EINVAL;
1541                 else if (cs->gotfwver != 1) {
1542                         cs->cmd_result = -ENOENT;
1543                 } else {
1544                         memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1545                         cs->cmd_result = 0;
1546                 }
1547                 cs->waiting = 0;
1548                 wake_up(&cs->waitqueue);
1549                 break;
1550
1551         /* events from the proc file system */ // FIXME without ACT_xxxx?
1552         case ACT_PROC_CIDMODE:
1553                 spin_lock_irqsave(&cs->lock, flags);
1554                 if (ev->parameter != cs->cidmode) {
1555                         cs->cidmode = ev->parameter;
1556                         if (ev->parameter) {
1557                                 cs->at_state.pending_commands |= PC_CIDMODE;
1558                                 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1559                         } else {
1560                                 cs->at_state.pending_commands |= PC_UMMODE;
1561                                 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
1562                         }
1563                         atomic_set(&cs->commands_pending, 1);
1564                 }
1565                 spin_unlock_irqrestore(&cs->lock, flags);
1566                 cs->waiting = 0;
1567                 wake_up(&cs->waitqueue);
1568                 break;
1569
1570         /* events from the hardware drivers */
1571         case ACT_NOTIFY_BC_DOWN:
1572                 bchannel_down(bcs);
1573                 break;
1574         case ACT_NOTIFY_BC_UP:
1575                 bchannel_up(bcs);
1576                 break;
1577         case ACT_SHUTDOWN:
1578                 do_shutdown(cs);
1579                 break;
1580
1581
1582         default:
1583                 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1584                         *pp_command = at_state->bcs->commands[action - ACT_CMD];
1585                         if (!*pp_command) {
1586                                 *p_genresp = 1;
1587                                 *p_resp_code = RSP_NULL;
1588                         }
1589                 } else
1590                         dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
1591         }
1592 }
1593
1594 /* State machine to do the calling and hangup procedure */
1595 static void process_event(struct cardstate *cs, struct event_t *ev)
1596 {
1597         struct bc_state *bcs;
1598         char *p_command = NULL;
1599         struct reply_t *rep;
1600         int rcode;
1601         int genresp = 0;
1602         int resp_code = RSP_ERROR;
1603         int sendcid;
1604         struct at_state_t *at_state;
1605         int index;
1606         int curact;
1607         unsigned long flags;
1608
1609         if (ev->cid >= 0) {
1610                 at_state = at_state_from_cid(cs, ev->cid);
1611                 if (!at_state) {
1612                         gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1613                                           NULL, 0, NULL);
1614                         return;
1615                 }
1616         } else {
1617                 at_state = ev->at_state;
1618                 if (at_state_invalid(cs, at_state)) {
1619                         gig_dbg(DEBUG_ANY, "event for invalid at_state %p",
1620                                 at_state);
1621                         return;
1622                 }
1623         }
1624
1625         gig_dbg(DEBUG_CMD, "connection state %d, event %d",
1626                 at_state->ConState, ev->type);
1627
1628         bcs = at_state->bcs;
1629         sendcid = at_state->cid;
1630
1631         /* Setting the pointer to the dial array */
1632         rep = at_state->replystruct;
1633
1634         spin_lock_irqsave(&cs->lock, flags);
1635         if (ev->type == EV_TIMEOUT) {
1636                 if (ev->parameter != at_state->timer_index
1637                     || !at_state->timer_active) {
1638                         ev->type = RSP_NONE; /* old timeout */
1639                         gig_dbg(DEBUG_ANY, "old timeout");
1640                 } else if (!at_state->waiting)
1641                         gig_dbg(DEBUG_ANY, "timeout occurred");
1642                 else
1643                         gig_dbg(DEBUG_ANY, "stopped waiting");
1644         }
1645         spin_unlock_irqrestore(&cs->lock, flags);
1646
1647         /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1648            or at_state->str_var[STR_XXXX], set it */
1649         if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1650                 index = ev->type - RSP_VAR;
1651                 at_state->int_var[index] = ev->parameter;
1652         } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1653                 index = ev->type - RSP_STR;
1654                 kfree(at_state->str_var[index]);
1655                 at_state->str_var[index] = ev->ptr;
1656                 ev->ptr = NULL; /* prevent process_events() from
1657                                    deallocating ptr */
1658         }
1659
1660         if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1661                 at_state->getstring = 0;
1662
1663         /* Search row in dial array which matches modem response and current
1664            constate */
1665         for (;; rep++) {
1666                 rcode = rep->resp_code;
1667                 if (rcode == RSP_LAST) {
1668                         /* found nothing...*/
1669                         dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1670                                         "resp_code %d in ConState %d!\n",
1671                                  __func__, ev->type, at_state->ConState);
1672                         return;
1673                 }
1674                 if ((rcode == RSP_ANY || rcode == ev->type)
1675                   && ((int) at_state->ConState >= rep->min_ConState)
1676                   && (rep->max_ConState < 0
1677                       || (int) at_state->ConState <= rep->max_ConState)
1678                   && (rep->parameter < 0 || rep->parameter == ev->parameter))
1679                         break;
1680         }
1681
1682         p_command = rep->command;
1683
1684         at_state->waiting = 0;
1685         for (curact = 0; curact < MAXACT; ++curact) {
1686                 /* The row tells us what we should do  ..
1687                  */
1688                 do_action(rep->action[curact], cs, bcs, &at_state, &p_command, &genresp, &resp_code, ev);
1689                 if (!at_state)
1690                         break; /* may be freed after disconnect */
1691         }
1692
1693         if (at_state) {
1694                 /* Jump to the next con-state regarding the array */
1695                 if (rep->new_ConState >= 0)
1696                         at_state->ConState = rep->new_ConState;
1697
1698                 if (genresp) {
1699                         spin_lock_irqsave(&cs->lock, flags);
1700                         at_state->timer_expires = 0; //FIXME
1701                         at_state->timer_active = 0; //FIXME
1702                         spin_unlock_irqrestore(&cs->lock, flags);
1703                         gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
1704                 } else {
1705                         /* Send command to modem if not NULL... */
1706                         if (p_command/*rep->command*/) {
1707                                 if (cs->connected)
1708                                         send_command(cs, p_command,
1709                                                      sendcid, cs->dle,
1710                                                      GFP_ATOMIC);
1711                                 else
1712                                         gigaset_add_event(cs, at_state,
1713                                                           RSP_NODEV,
1714                                                           NULL, 0, NULL);
1715                         }
1716
1717                         spin_lock_irqsave(&cs->lock, flags);
1718                         if (!rep->timeout) {
1719                                 at_state->timer_expires = 0;
1720                                 at_state->timer_active = 0;
1721                         } else if (rep->timeout > 0) { /* new timeout */
1722                                 at_state->timer_expires = rep->timeout * 10;
1723                                 at_state->timer_active = 1;
1724                                 ++at_state->timer_index;
1725                         }
1726                         spin_unlock_irqrestore(&cs->lock, flags);
1727                 }
1728         }
1729 }
1730
1731 static void schedule_sequence(struct cardstate *cs,
1732                               struct at_state_t *at_state, int sequence)
1733 {
1734         cs->cur_at_seq = sequence;
1735         gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1736 }
1737
1738 static void process_command_flags(struct cardstate *cs)
1739 {
1740         struct at_state_t *at_state = NULL;
1741         struct bc_state *bcs;
1742         int i;
1743         int sequence;
1744         unsigned long flags;
1745
1746         atomic_set(&cs->commands_pending, 0);
1747
1748         if (cs->cur_at_seq) {
1749                 gig_dbg(DEBUG_CMD, "not searching scheduled commands: busy");
1750                 return;
1751         }
1752
1753         gig_dbg(DEBUG_CMD, "searching scheduled commands");
1754
1755         sequence = SEQ_NONE;
1756
1757         /* clear pending_commands and hangup channels on shutdown */
1758         if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1759                 cs->at_state.pending_commands &= ~PC_CIDMODE;
1760                 for (i = 0; i < cs->channels; ++i) {
1761                         bcs = cs->bcs + i;
1762                         at_state = &bcs->at_state;
1763                         at_state->pending_commands &=
1764                                 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1765                         if (at_state->cid > 0)
1766                                 at_state->pending_commands |= PC_HUP;
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         /* clear pending_commands and hangup channels on reset */
1775         if (cs->at_state.pending_commands & PC_INIT) {
1776                 cs->at_state.pending_commands &= ~PC_CIDMODE;
1777                 for (i = 0; i < cs->channels; ++i) {
1778                         bcs = cs->bcs + i;
1779                         at_state = &bcs->at_state;
1780                         at_state->pending_commands &=
1781                                 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1782                         if (at_state->cid > 0)
1783                                 at_state->pending_commands |= PC_HUP;
1784                         if (atomic_read(&cs->mstate) == MS_RECOVER) {
1785                                 if (at_state->pending_commands & PC_CID) {
1786                                         at_state->pending_commands |= PC_NOCID;
1787                                         at_state->pending_commands &= ~PC_CID;
1788                                 }
1789                         }
1790                 }
1791         }
1792
1793         /* only switch back to unimodem mode, if no commands are pending and no channels are up */
1794         spin_lock_irqsave(&cs->lock, flags);
1795         if (cs->at_state.pending_commands == PC_UMMODE
1796             && !cs->cidmode
1797             && list_empty(&cs->temp_at_states)
1798             && atomic_read(&cs->mode) == M_CID) {
1799                 sequence = SEQ_UMMODE;
1800                 at_state = &cs->at_state;
1801                 for (i = 0; i < cs->channels; ++i) {
1802                         bcs = cs->bcs + i;
1803                         if (bcs->at_state.pending_commands ||
1804                             bcs->at_state.cid > 0) {
1805                                 sequence = SEQ_NONE;
1806                                 break;
1807                         }
1808                 }
1809         }
1810         spin_unlock_irqrestore(&cs->lock, flags);
1811         cs->at_state.pending_commands &= ~PC_UMMODE;
1812         if (sequence != SEQ_NONE) {
1813                 schedule_sequence(cs, at_state, sequence);
1814                 return;
1815         }
1816
1817         for (i = 0; i < cs->channels; ++i) {
1818                 bcs = cs->bcs + i;
1819                 if (bcs->at_state.pending_commands & PC_HUP) {
1820                         bcs->at_state.pending_commands &= ~PC_HUP;
1821                         if (bcs->at_state.pending_commands & PC_CID) {
1822                                 /* not yet dialing: PC_NOCID is sufficient */
1823                                 bcs->at_state.pending_commands |= PC_NOCID;
1824                                 bcs->at_state.pending_commands &= ~PC_CID;
1825                         } else {
1826                                 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1827                                 return;
1828                         }
1829                 }
1830                 if (bcs->at_state.pending_commands & PC_NOCID) {
1831                         bcs->at_state.pending_commands &= ~PC_NOCID;
1832                         cs->curchannel = bcs->channel;
1833                         schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1834                         return;
1835                 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1836                         bcs->at_state.pending_commands &= ~PC_DLE0;
1837                         cs->curchannel = bcs->channel;
1838                         schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1839                         return;
1840                 }
1841         }
1842
1843         list_for_each_entry(at_state, &cs->temp_at_states, list)
1844                 if (at_state->pending_commands & PC_HUP) {
1845                         at_state->pending_commands &= ~PC_HUP;
1846                         schedule_sequence(cs, at_state, SEQ_HUP);
1847                         return;
1848                 }
1849
1850         if (cs->at_state.pending_commands & PC_INIT) {
1851                 cs->at_state.pending_commands &= ~PC_INIT;
1852                 cs->dle = 0; //FIXME
1853                 cs->inbuf->inputstate = INS_command;
1854                 //FIXME reset card state (or -> LOCK0)?
1855                 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1856                 return;
1857         }
1858         if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1859                 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1860                 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1861                 return;
1862         }
1863         if (cs->at_state.pending_commands & PC_CIDMODE) {
1864                 cs->at_state.pending_commands &= ~PC_CIDMODE;
1865                 if (atomic_read(&cs->mode) == M_UNIMODEM) {
1866                         cs->retry_count = 1;
1867                         schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1868                         return;
1869                 }
1870         }
1871
1872         for (i = 0; i < cs->channels; ++i) {
1873                 bcs = cs->bcs + i;
1874                 if (bcs->at_state.pending_commands & PC_DLE1) {
1875                         bcs->at_state.pending_commands &= ~PC_DLE1;
1876                         cs->curchannel = bcs->channel;
1877                         schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1878                         return;
1879                 }
1880                 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1881                         bcs->at_state.pending_commands &= ~PC_ACCEPT;
1882                         schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1883                         return;
1884                 }
1885                 if (bcs->at_state.pending_commands & PC_DIAL) {
1886                         bcs->at_state.pending_commands &= ~PC_DIAL;
1887                         schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1888                         return;
1889                 }
1890                 if (bcs->at_state.pending_commands & PC_CID) {
1891                         switch (atomic_read(&cs->mode)) {
1892                         case M_UNIMODEM:
1893                                 cs->at_state.pending_commands |= PC_CIDMODE;
1894                                 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1895                                 atomic_set(&cs->commands_pending, 1);
1896                                 return;
1897 #ifdef GIG_MAYINITONDIAL
1898                         case M_UNKNOWN:
1899                                 schedule_init(cs, MS_INIT);
1900                                 return;
1901 #endif
1902                         }
1903                         bcs->at_state.pending_commands &= ~PC_CID;
1904                         cs->curchannel = bcs->channel;
1905 #ifdef GIG_RETRYCID
1906                         cs->retry_count = 2;
1907 #else
1908                         cs->retry_count = 1;
1909 #endif
1910                         schedule_sequence(cs, &cs->at_state, SEQ_CID);
1911                         return;
1912                 }
1913         }
1914 }
1915
1916 static void process_events(struct cardstate *cs)
1917 {
1918         struct event_t *ev;
1919         unsigned head, tail;
1920         int i;
1921         int check_flags = 0;
1922         int was_busy;
1923         unsigned long flags;
1924
1925         spin_lock_irqsave(&cs->ev_lock, flags);
1926         head = cs->ev_head;
1927
1928         for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1929                 tail = cs->ev_tail;
1930                 if (tail == head) {
1931                         if (!check_flags && !atomic_read(&cs->commands_pending))
1932                                 break;
1933                         check_flags = 0;
1934                         spin_unlock_irqrestore(&cs->ev_lock, flags);
1935                         process_command_flags(cs);
1936                         spin_lock_irqsave(&cs->ev_lock, flags);
1937                         tail = cs->ev_tail;
1938                         if (tail == head) {
1939                                 if (!atomic_read(&cs->commands_pending))
1940                                         break;
1941                                 continue;
1942                         }
1943                 }
1944
1945                 ev = cs->events + head;
1946                 was_busy = cs->cur_at_seq != SEQ_NONE;
1947                 spin_unlock_irqrestore(&cs->ev_lock, flags);
1948                 process_event(cs, ev);
1949                 spin_lock_irqsave(&cs->ev_lock, flags);
1950                 kfree(ev->ptr);
1951                 ev->ptr = NULL;
1952                 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1953                         check_flags = 1;
1954
1955                 head = (head + 1) % MAX_EVENTS;
1956                 cs->ev_head = head;
1957         }
1958
1959         spin_unlock_irqrestore(&cs->ev_lock, flags);
1960
1961         if (i == 2 * MAX_EVENTS) {
1962                 dev_err(cs->dev,
1963                         "infinite loop in process_events; aborting.\n");
1964         }
1965 }
1966
1967 /* tasklet scheduled on any event received from the Gigaset device
1968  * parameter:
1969  *      data    ISDN controller state structure
1970  */
1971 void gigaset_handle_event(unsigned long data)
1972 {
1973         struct cardstate *cs = (struct cardstate *) data;
1974
1975         /* handle incoming data on control/common channel */
1976         if (atomic_read(&cs->inbuf->head) != atomic_read(&cs->inbuf->tail)) {
1977                 gig_dbg(DEBUG_INTR, "processing new data");
1978                 cs->ops->handle_input(cs->inbuf);
1979         }
1980
1981         process_events(cs);
1982 }