drivers/isdn/gigaset/ev-layer.c

   1 /*
   2  * Stuff used by all variants of the driver
   3  *
   4  * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>,
   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 static 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  */
 496 static 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  */
 514 void 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
 531         len = cs->cbytes;
 532         if (!len) {
 533                 /* ignore additional LFs/CRs (M10x config mode or cx100) */
 534                 gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
 535                 return;
 536         }
 537         cs->respdata[len] = 0;
 538         gig_dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
 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) {
 554                                         dev_warn(cs->dev,
 555                                            "too many parameters in response\n");
 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,
 566                                           NULL, 0, NULL);
 567                         return;
 568                 }
 569
 570                 for (j = 1; j < params; ++j)
 571                         argv[j][-1] = 0;
 572
 573                 gig_dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
 574                 if (cid) {
 575                         --params;
 576                         gig_dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
 577                 }
 578                 gig_dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
 579                 for (j = 1; j < params; j++)
 580                         gig_dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
 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)) {
 592                         dev_err(cs->dev, "event queue full\n");
 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;
 613                                 dev_warn(cs->dev,
 614                                          "unknown modem response: %s\n",
 615                                          argv[curarg]);
 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) {
 631                                 dev_err(cs->dev,
 632                                         "received RING without CID!\n");
 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;
 660                                 dev_warn(cs->dev,
 661                                         "%s: unknown parameter %s after ZSAU\n",
 662                                          __func__, argv[curarg]);
 663                         }
 664                         ++curarg;
 665                         break;
 666                 case RT_STRING:
 667                         if (curarg < params) {
 668                                 event->ptr = kstrdup(argv[curarg], GFP_ATOMIC);
 669                                 if (!event->ptr)
 670                                         dev_err(cs->dev, "out of memory\n");
 671                                 ++curarg;
 672                         }
 673 #ifdef CONFIG_GIGASET_DEBUG
 674                         if (!event->ptr)
 675                                 gig_dbg(DEBUG_CMD, "string==NULL");
 676                         else
 677                                 gig_dbg(DEBUG_CMD, "string==%s",
 678                                         (char *) event->ptr);
 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
 688                                                            | j;
 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
 706                         gig_dbg(DEBUG_CMD, "parameter==%d", event->parameter);
 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)
 722                 gig_dbg(DEBUG_ANY,
 723                         "invalid number of processed parameters: %d/%d",
 724                         curarg, params);
 725 }
 726 EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
 727
 728 /* disconnect
 729  * process closing of connection associated with given AT state structure
 730  */
 731 static void disconnect(struct at_state_t **at_state_p)
 732 {
 733         unsigned long flags;
 734         struct bc_state *bcs = (*at_state_p)->bcs;
 735         struct cardstate *cs = (*at_state_p)->cs;
 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
 743                 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
 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  */
 765 static inline struct at_state_t *get_free_channel(struct cardstate *cs,
 766                                                   int cid)
 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
 793 static 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
 812 static void schedule_init(struct cardstate *cs, int state)
 813 {
 814         if (cs->at_state.pending_commands & PC_INIT) {
 815                 gig_dbg(DEBUG_CMD, "not scheduling PC_INIT again");
 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);
 823         gig_dbg(DEBUG_CMD, "Scheduling PC_INIT");
 824 }
 825
 826 /* Add "AT" to a command, add the cid, dle encode it, send the result to the
 827    hardware. */
 828 static void send_command(struct cardstate *cs, const char *cmd, int cid,
 829                          int dle, gfp_t kmallocflags)
 830 {
 831         size_t cmdlen, buflen;
 832         char *cmdpos, *cmdbuf, *cmdtail;
 833
 834         cmdlen = strlen(cmd);
 835         buflen = 11 + cmdlen;
 836         if (unlikely(buflen <= cmdlen)) {
 837                 dev_err(cs->dev, "integer overflow in buflen\n");
 838                 return;
 839         }
 840
 841         cmdbuf = kmalloc(buflen, kmallocflags);
 842         if (unlikely(!cmdbuf)) {
 843                 dev_err(cs->dev, "out of memory\n");
 844                 return;
 845         }
 846
 847         cmdpos = cmdbuf + 9;
 848         cmdtail = cmdpos + cmdlen;
 849         memcpy(cmdpos, cmd, cmdlen);
 850
 851         if (cid > 0 && cid <= 65535) {
 852                 do {
 853                         *--cmdpos = '0' + cid % 10;
 854                         cid /= 10;
 855                         ++cmdlen;
 856                 } while (cid);
 857         }
 858
 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);
 873 }
 874
 875 static 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
 901 static void bchannel_down(struct bc_state *bcs)
 902 {
 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
 918 static void bchannel_up(struct bc_state *bcs)
 919 {
 920         if (!(bcs->chstate & CHS_D_UP)) {
 921                 dev_notice(bcs->cs->dev, "%s: D channel not up\n", __func__);
 922                 bcs->chstate |= CHS_D_UP;
 923                 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
 924         }
 925
 926         if (bcs->chstate & CHS_B_UP) {
 927                 dev_notice(bcs->cs->dev, "%s: B channel already up\n",
 928                            __func__);
 929                 return;
 930         }
 931
 932         bcs->chstate |= CHS_B_UP;
 933         gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
 934 }
 935
 936 static 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;
 954         gig_dbg(DEBUG_CMD, "Scheduling PC_CID");
 955         atomic_set(&cs->commands_pending, 1);
 956         return;
 957
 958 error:
 959         at_state->pending_commands |= PC_NOCID;
 960         gig_dbg(DEBUG_CMD, "Scheduling PC_NOCID");
 961         atomic_set(&cs->commands_pending, 1);
 962         return;
 963 }
 964
 965 static 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;
 974                 gig_dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
 975                 atomic_set(&cs->commands_pending, 1);
 976         } else {
 977                 //FIXME
 978                 at_state->pending_commands |= PC_HUP;
 979                 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
 980                 atomic_set(&cs->commands_pending, 1);
 981         }
 982 }
 983
 984 static 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);
 992                                         // FIXME: not in locked mode
 993                                         // FIXME 2: only after init sequence
 994
 995         cs->waiting = 0;
 996         wake_up(&cs->waitqueue);
 997 }
 998
 999 static 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
1013 static 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;
1020                 atomic_set(&cs->commands_pending, 1);
1021                 gig_dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN");
1022         } else
1023                 finish_shutdown(cs);
1024 }
1025
1026 static 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  */
1039 static 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)
1051                 dev_warn(cs->dev,
1052                     "Could not enter cid mode. Reinit device and try again.\n");
1053         else {
1054                 dev_warn(cs->dev,
1055                     "Could not get a call id. Reinit device and try again.\n");
1056                 cs->bcs[channel].at_state.pending_commands |= PC_CID;
1057         }
1058         schedule_init(cs, MS_INIT);
1059         return 1;
1060 }
1061
1062 static int at_state_invalid(struct cardstate *cs,
1063                             struct at_state_t *test_ptr)
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;
1084 exit:
1085         spin_unlock_irqrestore(&cs->lock, flags);
1086         return retval;
1087 }
1088
1089 static 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:
1100                 dev_err(cs->dev, "internal error: disposition=%d\n", retval);
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
1114 static 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);
1144
1145         return mode;
1146 }
1147
1148 static 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);
1156         if (atomic_read(&cs->connected))
1157                 schedule_init(cs, MS_INIT);
1158
1159         return 0;
1160 }
1161
1162 static 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:
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;
1194                 atomic_set(&cs->commands_pending, 1);
1195                 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1196                 break;
1197         case ACT_FAILINIT:
1198                 dev_warn(cs->dev, "Could not initialize the device.\n");
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) {
1254                         dev_warn(cs->dev,
1255                         "RING ignored: could not allocate channel structure\n");
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:
1283                 dev_warn(cs->dev, "Could not shut down the device.\n");
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;
1336                 dev_warn(cs->dev, "Could not hang up.\n");
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;
1348                 dev_warn(cs->dev, "Could not leave DLE mode.\n");
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;
1355                 dev_warn(cs->dev,
1356                          "Could not enter DLE mode. Trying to hang up.\n");
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)) {
1377                         dev_warn(cs->dev,
1378                                  "Could not get a call ID. Cannot dial.\n");
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;
1411         case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1412                                are not handled properly anymore */
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;
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]);
1457                         break;
1458                 }
1459                 /* fall through */
1460         case ACT_FAILVER:
1461                 cs->gotfwver = -1;
1462                 dev_err(cs->dev, "could not read firmware version.\n");
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:
1480                 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1481                         __func__, ev->type, at_state->ConState);
1482                 break;
1483         case ACT_WARN:
1484                 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1485                          __func__, ev->type, at_state->ConState);
1486                 break;
1487         case ACT_ZCAU:
1488                 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1489                          ev->parameter, at_state->ConState);
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:
1500                 gig_dbg(DEBUG_CMD, "set protocol to %u",
1501                         (unsigned) ev->parameter);
1502                 at_state->bcs->proto2 = ev->parameter;
1503                 break;
1504         case ACT_HUP:
1505                 at_state->pending_commands |= PC_HUP;
1506                 atomic_set(&cs->commands_pending, 1);
1507                 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
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;
1543                                 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1544                         } else {
1545                                 cs->at_state.pending_commands |= PC_UMMODE;
1546                                 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
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
1574                         dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
1575         }
1576 }
1577
1578 /* State machine to do the calling and hangup procedure */
1579 static 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
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,
1597                                           NULL, 0, NULL);
1598                         return;
1599                 }
1600         } else {
1601                 at_state = ev->at_state;
1602                 if (at_state_invalid(cs, at_state)) {
1603                         gig_dbg(DEBUG_ANY, "event for invalid at_state %p",
1604                                 at_state);
1605                         return;
1606                 }
1607         }
1608
1609         gig_dbg(DEBUG_CMD, "connection state %d, event %d",
1610                 at_state->ConState, ev->type);
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;
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 */
1622                         gig_dbg(DEBUG_ANY, "old timeout");
1623                 } else if (!at_state->waiting)
1624                         gig_dbg(DEBUG_ANY, "timeout occurred");
1625                 else
1626                         gig_dbg(DEBUG_ANY, "stopped waiting");
1627         }
1628
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 */
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;
1638                 ev->ptr = NULL; /* prevent process_events() from
1639                                    deallocating ptr */
1640         }
1641
1642         if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1643                 at_state->getstring = 0;
1644
1645         /* Search row in dial array which matches modem response and current
1646            constate */
1647         for (;; rep++) {
1648                 rcode = rep->resp_code;
1649                 if (rcode == RSP_LAST) {
1650                         /* found nothing...*/
1651                         dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1652                                         "resp_code %d in ConState %d!\n",
1653                                  __func__, ev->type, at_state->ConState);
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,
1691                                                      sendcid, cs->dle,
1692                                                      GFP_ATOMIC);
1693                                 else
1694                                         gigaset_add_event(cs, at_state,
1695                                                           RSP_NODEV,
1696                                                           NULL, 0, NULL);
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,
1707                                           MAX_TIMER_INDEX);
1708                         }
1709                         spin_unlock_irqrestore(&cs->lock, flags);
1710                 }
1711         }
1712 }
1713
1714 static 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
1721 static 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
1728         atomic_set(&cs->commands_pending, 0);
1729
1730         if (cs->cur_at_seq) {
1731                 gig_dbg(DEBUG_CMD, "not searching scheduled commands: busy");
1732                 return;
1733         }
1734
1735         gig_dbg(DEBUG_CMD, "searching scheduled commands");
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) {
1846                         cs->retry_count = 1;
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;
1874                                 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
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
1896 static 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) {
1935                 dev_err(cs->dev,
1936                         "infinite loop in process_events; aborting.\n");
1937         }
1938 }
1939
1940 /* tasklet scheduled on any event received from the Gigaset device
1941  * parameter:
1942  *      data    ISDN controller state structure
1943  */
1944 void gigaset_handle_event(unsigned long data)
1945 {
1946         struct cardstate *cs = (struct cardstate *) data;
1947
1948         /* handle incoming data on control/common channel */
1949         if (atomic_read(&cs->inbuf->head) != atomic_read(&cs->inbuf->tail)) {
1950                 gig_dbg(DEBUG_INTR, "processing new data");
1951                 cs->ops->handle_input(cs->inbuf);
1952         }
1953
1954         process_events(cs);
1955 }