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