git.oblomov.eu Git - linux-2.6/blob - 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 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         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                 atomic_set(&cs->commands_pending, 1); //FIXME
 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         atomic_set(&cs->mode, mode);
 797         atomic_set(&cs->mstate, MS_UNINITIALIZED);
 798         gigaset_free_channels(cs);
 799         for (i = 0; i < cs->channels; ++i) {
 800                 at_state = &cs->bcs[i].at_state;
 801                 if (at_state->pending_commands & PC_CID) {
 802                         at_state->pending_commands &= ~PC_CID;
 803                         at_state->pending_commands |= PC_NOCID;
 804                         atomic_set(&cs->commands_pending, 1);
 805                 }
 806         }
 807 }
 808
 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         atomic_set(&cs->mstate, state);
 816         atomic_set(&cs->mode, M_UNKNOWN);
 817         gigaset_block_channels(cs);
 818         cs->at_state.pending_commands |= PC_INIT;
 819         atomic_set(&cs->commands_pending, 1);
 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         atomic_set(&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         atomic_set(&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                 atomic_set(&cs->commands_pending, 1);
 977         } else {
 978                 //FIXME
 979                 at_state->pending_commands |= PC_HUP;
 980                 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
 981                 atomic_set(&cs->commands_pending, 1);
 982         }
 983 }
 984
 985 static void do_start(struct cardstate *cs)
 986 {
 987         gigaset_free_channels(cs);
 988
 989         if (atomic_read(&cs->mstate) != MS_LOCKED)
 990                 schedule_init(cs, MS_INIT);
 991
 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 (atomic_read(&cs->mstate) != MS_LOCKED) {
1004                 atomic_set(&cs->mstate, MS_UNINITIALIZED);
1005                 atomic_set(&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_interruptible(&cs->waitqueue);
1019 }
1020
1021 static void do_shutdown(struct cardstate *cs)
1022 {
1023         gigaset_block_channels(cs);
1024
1025         if (atomic_read(&cs->mstate) == MS_READY) {
1026                 atomic_set(&cs->mstate, MS_SHUTDOWN);
1027                 cs->at_state.pending_commands |= PC_SHUTDOWN;
1028                 atomic_set(&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                 atomic_set(&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 (atomic_read(&cs->mstate)) {
1134         case MS_UNINITIALIZED:
1135         case MS_READY:
1136                 if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
1137                     cs->at_state.pending_commands)
1138                         return -EBUSY;
1139
1140                 for (i = 0; i < cs->channels; ++i)
1141                         if (cs->bcs[i].at_state.pending_commands)
1142                                 return -EBUSY;
1143
1144                 if (!gigaset_get_channels(cs))
1145                         return -EBUSY;
1146
1147                 break;
1148         case MS_LOCKED:
1149                 //retval = -EACCES;
1150                 break;
1151         default:
1152                 return -EBUSY;
1153         }
1154
1155         mode = atomic_read(&cs->mode);
1156         atomic_set(&cs->mstate, MS_LOCKED);
1157         atomic_set(&cs->mode, M_UNKNOWN);
1158
1159         return mode;
1160 }
1161
1162 static int do_unlock(struct cardstate *cs)
1163 {
1164         if (atomic_read(&cs->mstate) != MS_LOCKED)
1165                 return -EINVAL;
1166
1167         atomic_set(&cs->mstate, MS_UNINITIALIZED);
1168         atomic_set(&cs->mode, M_UNKNOWN);
1169         gigaset_free_channels(cs);
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                 atomic_set(&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                         atomic_set(&cs->mstate, MS_READY);
1207                         break;
1208                 }
1209                 spin_unlock_irqrestore(&cs->lock, flags);
1210                 cs->at_state.pending_commands |= PC_CIDMODE;
1211                 atomic_set(&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 (atomic_read(&cs->mstate) == MS_INIT ||
1238                     atomic_read(&cs->mstate) == MS_RECOVER) {
1239                         gigaset_free_channels(cs);
1240                         atomic_set(&cs->mstate, MS_READY);
1241                 }
1242                 atomic_set(&cs->mode, M_CID);
1243                 cs->cur_at_seq = SEQ_NONE;
1244                 break;
1245         case ACT_UMODESET:
1246                 atomic_set(&cs->mode, M_UNIMODEM);
1247                 cs->cur_at_seq = SEQ_NONE;
1248                 break;
1249         case ACT_FAILCMODE:
1250                 cs->cur_at_seq = SEQ_NONE;
1251                 if (atomic_read(&cs->mstate) == MS_INIT ||
1252                     atomic_read(&cs->mstate) == MS_RECOVER) {
1253                         init_failed(cs, M_UNKNOWN);
1254                         break;
1255                 }
1256                 if (!reinit_and_retry(cs, -1))
1257                         schedule_init(cs, MS_RECOVER);
1258                 break;
1259         case ACT_FAILUMODE:
1260                 cs->cur_at_seq = SEQ_NONE;
1261                 schedule_init(cs, MS_RECOVER);
1262                 break;
1263         case ACT_HUPMODEM:
1264                 /* send "+++" (hangup in unimodem mode) */
1265                 cs->ops->write_cmd(cs, "+++", 3, NULL);
1266                 break;
1267         case ACT_RING:
1268                 /* get fresh AT state structure for new CID */
1269                 at_state2 = get_free_channel(cs, ev->parameter);
1270                 if (!at_state2) {
1271                         dev_warn(cs->dev,
1272                         "RING ignored: could not allocate channel structure\n");
1273                         break;
1274                 }
1275
1276                 /* initialize AT state structure
1277                  * note that bcs may be NULL if no B channel is free
1278                  */
1279                 at_state2->ConState = 700;
1280                 kfree(at_state2->str_var[STR_NMBR]);
1281                 at_state2->str_var[STR_NMBR] = NULL;
1282                 kfree(at_state2->str_var[STR_ZCPN]);
1283                 at_state2->str_var[STR_ZCPN] = NULL;
1284                 kfree(at_state2->str_var[STR_ZBC]);
1285                 at_state2->str_var[STR_ZBC] = NULL;
1286                 kfree(at_state2->str_var[STR_ZHLC]);
1287                 at_state2->str_var[STR_ZHLC] = NULL;
1288                 at_state2->int_var[VAR_ZCTP] = -1;
1289
1290                 spin_lock_irqsave(&cs->lock, flags);
1291                 at_state2->timer_expires = RING_TIMEOUT;
1292                 at_state2->timer_active = 1;
1293                 spin_unlock_irqrestore(&cs->lock, flags);
1294                 break;
1295         case ACT_ICALL:
1296                 handle_icall(cs, bcs, p_at_state);
1297                 at_state = *p_at_state;
1298                 break;
1299         case ACT_FAILSDOWN:
1300                 dev_warn(cs->dev, "Could not shut down the device.\n");
1301                 /* fall through */
1302         case ACT_FAKESDOWN:
1303         case ACT_SDOWN:
1304                 cs->cur_at_seq = SEQ_NONE;
1305                 finish_shutdown(cs);
1306                 break;
1307         case ACT_CONNECT:
1308                 if (cs->onechannel) {
1309                         at_state->pending_commands |= PC_DLE1;
1310                         atomic_set(&cs->commands_pending, 1);
1311                         break;
1312                 }
1313                 bcs->chstate |= CHS_D_UP;
1314                 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1315                 cs->ops->init_bchannel(bcs);
1316                 break;
1317         case ACT_DLE1:
1318                 cs->cur_at_seq = SEQ_NONE;
1319                 bcs = cs->bcs + cs->curchannel;
1320
1321                 bcs->chstate |= CHS_D_UP;
1322                 gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
1323                 cs->ops->init_bchannel(bcs);
1324                 break;
1325         case ACT_FAKEHUP:
1326                 at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
1327                 /* fall through */
1328         case ACT_DISCONNECT:
1329                 cs->cur_at_seq = SEQ_NONE;
1330                 at_state->cid = -1;
1331                 if (bcs && cs->onechannel && cs->dle) {
1332                         /* Check for other open channels not needed:
1333                          * DLE only used for M10x with one B channel.
1334                          */
1335                         at_state->pending_commands |= PC_DLE0;
1336                         atomic_set(&cs->commands_pending, 1);
1337                 } else {
1338                         disconnect(p_at_state);
1339                         at_state = *p_at_state;
1340                 }
1341                 break;
1342         case ACT_FAKEDLE0:
1343                 at_state->int_var[VAR_ZDLE] = 0;
1344                 cs->dle = 0;
1345                 /* fall through */
1346         case ACT_DLE0:
1347                 cs->cur_at_seq = SEQ_NONE;
1348                 at_state2 = &cs->bcs[cs->curchannel].at_state;
1349                 disconnect(&at_state2);
1350                 break;
1351         case ACT_ABORTHUP:
1352                 cs->cur_at_seq = SEQ_NONE;
1353                 dev_warn(cs->dev, "Could not hang up.\n");
1354                 at_state->cid = -1;
1355                 if (bcs && cs->onechannel)
1356                         at_state->pending_commands |= PC_DLE0;
1357                 else {
1358                         disconnect(p_at_state);
1359                         at_state = *p_at_state;
1360                 }
1361                 schedule_init(cs, MS_RECOVER);
1362                 break;
1363         case ACT_FAILDLE0:
1364                 cs->cur_at_seq = SEQ_NONE;
1365                 dev_warn(cs->dev, "Could not leave DLE mode.\n");
1366                 at_state2 = &cs->bcs[cs->curchannel].at_state;
1367                 disconnect(&at_state2);
1368                 schedule_init(cs, MS_RECOVER);
1369                 break;
1370         case ACT_FAILDLE1:
1371                 cs->cur_at_seq = SEQ_NONE;
1372                 dev_warn(cs->dev,
1373                          "Could not enter DLE mode. Trying to hang up.\n");
1374                 channel = cs->curchannel;
1375                 cs->bcs[channel].at_state.pending_commands |= PC_HUP;
1376                 atomic_set(&cs->commands_pending, 1);
1377                 break;
1378
1379         case ACT_CID: /* got cid; start dialing */
1380                 cs->cur_at_seq = SEQ_NONE;
1381                 channel = cs->curchannel;
1382                 if (ev->parameter > 0 && ev->parameter <= 65535) {
1383                         cs->bcs[channel].at_state.cid = ev->parameter;
1384                         cs->bcs[channel].at_state.pending_commands |=
1385                                 PC_DIAL;
1386                         atomic_set(&cs->commands_pending, 1);
1387                         break;
1388                 }
1389                 /* fall through */
1390         case ACT_FAILCID:
1391                 cs->cur_at_seq = SEQ_NONE;
1392                 channel = cs->curchannel;
1393                 if (!reinit_and_retry(cs, channel)) {
1394                         dev_warn(cs->dev,
1395                                  "Could not get a call ID. Cannot dial.\n");
1396                         at_state2 = &cs->bcs[channel].at_state;
1397                         disconnect(&at_state2);
1398                 }
1399                 break;
1400         case ACT_ABORTCID:
1401                 cs->cur_at_seq = SEQ_NONE;
1402                 at_state2 = &cs->bcs[cs->curchannel].at_state;
1403                 disconnect(&at_state2);
1404                 break;
1405
1406         case ACT_DIALING:
1407         case ACT_ACCEPTED:
1408                 cs->cur_at_seq = SEQ_NONE;
1409                 break;
1410
1411         case ACT_ABORTACCEPT:   /* hangup/error/timeout during ICALL processing */
1412                 disconnect(p_at_state);
1413                 at_state = *p_at_state;
1414                 break;
1415
1416         case ACT_ABORTDIAL:     /* error/timeout during dial preparation */
1417                 cs->cur_at_seq = SEQ_NONE;
1418                 at_state->pending_commands |= PC_HUP;
1419                 atomic_set(&cs->commands_pending, 1);
1420                 break;
1421
1422         case ACT_REMOTEREJECT:  /* DISCONNECT_IND after dialling */
1423         case ACT_CONNTIMEOUT:   /* timeout waiting for ZSAU=ACTIVE */
1424         case ACT_REMOTEHUP:     /* DISCONNECT_IND with established connection */
1425                 at_state->pending_commands |= PC_HUP;
1426                 atomic_set(&cs->commands_pending, 1);
1427                 break;
1428         case ACT_GETSTRING: /* warning: RING, ZDLE, ...
1429                                are not handled properly anymore */
1430                 at_state->getstring = 1;
1431                 break;
1432         case ACT_SETVER:
1433                 if (!ev->ptr) {
1434                         *p_genresp = 1;
1435                         *p_resp_code = RSP_ERROR;
1436                         break;
1437                 }
1438                 s = ev->ptr;
1439
1440                 if (!strcmp(s, "OK")) {
1441                         *p_genresp = 1;
1442                         *p_resp_code = RSP_ERROR;
1443                         break;
1444                 }
1445
1446                 for (i = 0; i < 4; ++i) {
1447                         val = simple_strtoul(s, (char **) &e, 10);
1448                         if (val > INT_MAX || e == s)
1449                                 break;
1450                         if (i == 3) {
1451                                 if (*e)
1452                                         break;
1453                         } else if (*e != '.')
1454                                 break;
1455                         else
1456                                 s = e + 1;
1457                         cs->fwver[i] = val;
1458                 }
1459                 if (i != 4) {
1460                         *p_genresp = 1;
1461                         *p_resp_code = RSP_ERROR;
1462                         break;
1463                 }
1464                 /*at_state->getstring = 1;*/
1465                 cs->gotfwver = 0;
1466                 break;
1467         case ACT_GOTVER:
1468                 if (cs->gotfwver == 0) {
1469                         cs->gotfwver = 1;
1470                         gig_dbg(DEBUG_ANY,
1471                                 "firmware version %02d.%03d.%02d.%02d",
1472                                 cs->fwver[0], cs->fwver[1],
1473                                 cs->fwver[2], cs->fwver[3]);
1474                         break;
1475                 }
1476                 /* fall through */
1477         case ACT_FAILVER:
1478                 cs->gotfwver = -1;
1479                 dev_err(cs->dev, "could not read firmware version.\n");
1480                 break;
1481 #ifdef CONFIG_GIGASET_DEBUG
1482         case ACT_ERROR:
1483                 *p_genresp = 1;
1484                 *p_resp_code = RSP_ERROR;
1485                 break;
1486         case ACT_TEST:
1487                 {
1488                         static int count = 3; //2; //1;
1489                         *p_genresp = 1;
1490                         *p_resp_code = count ? RSP_ERROR : RSP_OK;
1491                         if (count > 0)
1492                                 --count;
1493                 }
1494                 break;
1495 #endif
1496         case ACT_DEBUG:
1497                 gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
1498                         __func__, ev->type, at_state->ConState);
1499                 break;
1500         case ACT_WARN:
1501                 dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
1502                          __func__, ev->type, at_state->ConState);
1503                 break;
1504         case ACT_ZCAU:
1505                 dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
1506                          ev->parameter, at_state->ConState);
1507                 break;
1508
1509         /* events from the LL */
1510         case ACT_DIAL:
1511                 start_dial(at_state, ev->ptr, ev->parameter);
1512                 break;
1513         case ACT_ACCEPT:
1514                 start_accept(at_state);
1515                 break;
1516         case ACT_PROTO_L2:
1517                 gig_dbg(DEBUG_CMD, "set protocol to %u",
1518                         (unsigned) ev->parameter);
1519                 at_state->bcs->proto2 = ev->parameter;
1520                 break;
1521         case ACT_HUP:
1522                 at_state->pending_commands |= PC_HUP;
1523                 atomic_set(&cs->commands_pending, 1);
1524                 gig_dbg(DEBUG_CMD, "Scheduling PC_HUP");
1525                 break;
1526
1527         /* hotplug events */
1528         case ACT_STOP:
1529                 do_stop(cs);
1530                 break;
1531         case ACT_START:
1532                 do_start(cs);
1533                 break;
1534
1535         /* events from the interface */ // FIXME without ACT_xxxx?
1536         case ACT_IF_LOCK:
1537                 cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
1538                 cs->waiting = 0;
1539                 wake_up(&cs->waitqueue);
1540                 break;
1541         case ACT_IF_VER:
1542                 if (ev->parameter != 0)
1543                         cs->cmd_result = -EINVAL;
1544                 else if (cs->gotfwver != 1) {
1545                         cs->cmd_result = -ENOENT;
1546                 } else {
1547                         memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
1548                         cs->cmd_result = 0;
1549                 }
1550                 cs->waiting = 0;
1551                 wake_up(&cs->waitqueue);
1552                 break;
1553
1554         /* events from the proc file system */ // FIXME without ACT_xxxx?
1555         case ACT_PROC_CIDMODE:
1556                 spin_lock_irqsave(&cs->lock, flags);
1557                 if (ev->parameter != cs->cidmode) {
1558                         cs->cidmode = ev->parameter;
1559                         if (ev->parameter) {
1560                                 cs->at_state.pending_commands |= PC_CIDMODE;
1561                                 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1562                         } else {
1563                                 cs->at_state.pending_commands |= PC_UMMODE;
1564                                 gig_dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
1565                         }
1566                         atomic_set(&cs->commands_pending, 1);
1567                 }
1568                 spin_unlock_irqrestore(&cs->lock, flags);
1569                 cs->waiting = 0;
1570                 wake_up(&cs->waitqueue);
1571                 break;
1572
1573         /* events from the hardware drivers */
1574         case ACT_NOTIFY_BC_DOWN:
1575                 bchannel_down(bcs);
1576                 break;
1577         case ACT_NOTIFY_BC_UP:
1578                 bchannel_up(bcs);
1579                 break;
1580         case ACT_SHUTDOWN:
1581                 do_shutdown(cs);
1582                 break;
1583
1584
1585         default:
1586                 if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
1587                         *pp_command = at_state->bcs->commands[action - ACT_CMD];
1588                         if (!*pp_command) {
1589                                 *p_genresp = 1;
1590                                 *p_resp_code = RSP_NULL;
1591                         }
1592                 } else
1593                         dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
1594         }
1595 }
1596
1597 /* State machine to do the calling and hangup procedure */
1598 static void process_event(struct cardstate *cs, struct event_t *ev)
1599 {
1600         struct bc_state *bcs;
1601         char *p_command = NULL;
1602         struct reply_t *rep;
1603         int rcode;
1604         int genresp = 0;
1605         int resp_code = RSP_ERROR;
1606         int sendcid;
1607         struct at_state_t *at_state;
1608         int index;
1609         int curact;
1610         unsigned long flags;
1611
1612         if (ev->cid >= 0) {
1613                 at_state = at_state_from_cid(cs, ev->cid);
1614                 if (!at_state) {
1615                         gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
1616                                           NULL, 0, NULL);
1617                         return;
1618                 }
1619         } else {
1620                 at_state = ev->at_state;
1621                 if (at_state_invalid(cs, at_state)) {
1622                         gig_dbg(DEBUG_ANY, "event for invalid at_state %p",
1623                                 at_state);
1624                         return;
1625                 }
1626         }
1627
1628         gig_dbg(DEBUG_CMD, "connection state %d, event %d",
1629                 at_state->ConState, ev->type);
1630
1631         bcs = at_state->bcs;
1632         sendcid = at_state->cid;
1633
1634         /* Setting the pointer to the dial array */
1635         rep = at_state->replystruct;
1636
1637         spin_lock_irqsave(&cs->lock, flags);
1638         if (ev->type == EV_TIMEOUT) {
1639                 if (ev->parameter != at_state->timer_index
1640                     || !at_state->timer_active) {
1641                         ev->type = RSP_NONE; /* old timeout */
1642                         gig_dbg(DEBUG_ANY, "old timeout");
1643                 } else if (!at_state->waiting)
1644                         gig_dbg(DEBUG_ANY, "timeout occurred");
1645                 else
1646                         gig_dbg(DEBUG_ANY, "stopped waiting");
1647         }
1648         spin_unlock_irqrestore(&cs->lock, flags);
1649
1650         /* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
1651            or at_state->str_var[STR_XXXX], set it */
1652         if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
1653                 index = ev->type - RSP_VAR;
1654                 at_state->int_var[index] = ev->parameter;
1655         } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
1656                 index = ev->type - RSP_STR;
1657                 kfree(at_state->str_var[index]);
1658                 at_state->str_var[index] = ev->ptr;
1659                 ev->ptr = NULL; /* prevent process_events() from
1660                                    deallocating ptr */
1661         }
1662
1663         if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
1664                 at_state->getstring = 0;
1665
1666         /* Search row in dial array which matches modem response and current
1667            constate */
1668         for (;; rep++) {
1669                 rcode = rep->resp_code;
1670                 if (rcode == RSP_LAST) {
1671                         /* found nothing...*/
1672                         dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
1673                                         "resp_code %d in ConState %d!\n",
1674                                  __func__, ev->type, at_state->ConState);
1675                         return;
1676                 }
1677                 if ((rcode == RSP_ANY || rcode == ev->type)
1678                   && ((int) at_state->ConState >= rep->min_ConState)
1679                   && (rep->max_ConState < 0
1680                       || (int) at_state->ConState <= rep->max_ConState)
1681                   && (rep->parameter < 0 || rep->parameter == ev->parameter))
1682                         break;
1683         }
1684
1685         p_command = rep->command;
1686
1687         at_state->waiting = 0;
1688         for (curact = 0; curact < MAXACT; ++curact) {
1689                 /* The row tells us what we should do  ..
1690                  */
1691                 do_action(rep->action[curact], cs, bcs, &at_state, &p_command, &genresp, &resp_code, ev);
1692                 if (!at_state)
1693                         break; /* may be freed after disconnect */
1694         }
1695
1696         if (at_state) {
1697                 /* Jump to the next con-state regarding the array */
1698                 if (rep->new_ConState >= 0)
1699                         at_state->ConState = rep->new_ConState;
1700
1701                 if (genresp) {
1702                         spin_lock_irqsave(&cs->lock, flags);
1703                         at_state->timer_expires = 0; //FIXME
1704                         at_state->timer_active = 0; //FIXME
1705                         spin_unlock_irqrestore(&cs->lock, flags);
1706                         gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
1707                 } else {
1708                         /* Send command to modem if not NULL... */
1709                         if (p_command/*rep->command*/) {
1710                                 if (cs->connected)
1711                                         send_command(cs, p_command,
1712                                                      sendcid, cs->dle,
1713                                                      GFP_ATOMIC);
1714                                 else
1715                                         gigaset_add_event(cs, at_state,
1716                                                           RSP_NODEV,
1717                                                           NULL, 0, NULL);
1718                         }
1719
1720                         spin_lock_irqsave(&cs->lock, flags);
1721                         if (!rep->timeout) {
1722                                 at_state->timer_expires = 0;
1723                                 at_state->timer_active = 0;
1724                         } else if (rep->timeout > 0) { /* new timeout */
1725                                 at_state->timer_expires = rep->timeout * 10;
1726                                 at_state->timer_active = 1;
1727                                 ++at_state->timer_index;
1728                         }
1729                         spin_unlock_irqrestore(&cs->lock, flags);
1730                 }
1731         }
1732 }
1733
1734 static void schedule_sequence(struct cardstate *cs,
1735                               struct at_state_t *at_state, int sequence)
1736 {
1737         cs->cur_at_seq = sequence;
1738         gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
1739 }
1740
1741 static void process_command_flags(struct cardstate *cs)
1742 {
1743         struct at_state_t *at_state = NULL;
1744         struct bc_state *bcs;
1745         int i;
1746         int sequence;
1747         unsigned long flags;
1748
1749         atomic_set(&cs->commands_pending, 0);
1750
1751         if (cs->cur_at_seq) {
1752                 gig_dbg(DEBUG_CMD, "not searching scheduled commands: busy");
1753                 return;
1754         }
1755
1756         gig_dbg(DEBUG_CMD, "searching scheduled commands");
1757
1758         sequence = SEQ_NONE;
1759
1760         /* clear pending_commands and hangup channels on shutdown */
1761         if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1762                 cs->at_state.pending_commands &= ~PC_CIDMODE;
1763                 for (i = 0; i < cs->channels; ++i) {
1764                         bcs = cs->bcs + i;
1765                         at_state = &bcs->at_state;
1766                         at_state->pending_commands &=
1767                                 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1768                         if (at_state->cid > 0)
1769                                 at_state->pending_commands |= PC_HUP;
1770                         if (at_state->pending_commands & PC_CID) {
1771                                 at_state->pending_commands |= PC_NOCID;
1772                                 at_state->pending_commands &= ~PC_CID;
1773                         }
1774                 }
1775         }
1776
1777         /* clear pending_commands and hangup channels on reset */
1778         if (cs->at_state.pending_commands & PC_INIT) {
1779                 cs->at_state.pending_commands &= ~PC_CIDMODE;
1780                 for (i = 0; i < cs->channels; ++i) {
1781                         bcs = cs->bcs + i;
1782                         at_state = &bcs->at_state;
1783                         at_state->pending_commands &=
1784                                 ~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
1785                         if (at_state->cid > 0)
1786                                 at_state->pending_commands |= PC_HUP;
1787                         if (atomic_read(&cs->mstate) == MS_RECOVER) {
1788                                 if (at_state->pending_commands & PC_CID) {
1789                                         at_state->pending_commands |= PC_NOCID;
1790                                         at_state->pending_commands &= ~PC_CID;
1791                                 }
1792                         }
1793                 }
1794         }
1795
1796         /* only switch back to unimodem mode, if no commands are pending and no channels are up */
1797         spin_lock_irqsave(&cs->lock, flags);
1798         if (cs->at_state.pending_commands == PC_UMMODE
1799             && !cs->cidmode
1800             && list_empty(&cs->temp_at_states)
1801             && atomic_read(&cs->mode) == M_CID) {
1802                 sequence = SEQ_UMMODE;
1803                 at_state = &cs->at_state;
1804                 for (i = 0; i < cs->channels; ++i) {
1805                         bcs = cs->bcs + i;
1806                         if (bcs->at_state.pending_commands ||
1807                             bcs->at_state.cid > 0) {
1808                                 sequence = SEQ_NONE;
1809                                 break;
1810                         }
1811                 }
1812         }
1813         spin_unlock_irqrestore(&cs->lock, flags);
1814         cs->at_state.pending_commands &= ~PC_UMMODE;
1815         if (sequence != SEQ_NONE) {
1816                 schedule_sequence(cs, at_state, sequence);
1817                 return;
1818         }
1819
1820         for (i = 0; i < cs->channels; ++i) {
1821                 bcs = cs->bcs + i;
1822                 if (bcs->at_state.pending_commands & PC_HUP) {
1823                         bcs->at_state.pending_commands &= ~PC_HUP;
1824                         if (bcs->at_state.pending_commands & PC_CID) {
1825                                 /* not yet dialing: PC_NOCID is sufficient */
1826                                 bcs->at_state.pending_commands |= PC_NOCID;
1827                                 bcs->at_state.pending_commands &= ~PC_CID;
1828                         } else {
1829                                 schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
1830                                 return;
1831                         }
1832                 }
1833                 if (bcs->at_state.pending_commands & PC_NOCID) {
1834                         bcs->at_state.pending_commands &= ~PC_NOCID;
1835                         cs->curchannel = bcs->channel;
1836                         schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
1837                         return;
1838                 } else if (bcs->at_state.pending_commands & PC_DLE0) {
1839                         bcs->at_state.pending_commands &= ~PC_DLE0;
1840                         cs->curchannel = bcs->channel;
1841                         schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
1842                         return;
1843                 }
1844         }
1845
1846         list_for_each_entry(at_state, &cs->temp_at_states, list)
1847                 if (at_state->pending_commands & PC_HUP) {
1848                         at_state->pending_commands &= ~PC_HUP;
1849                         schedule_sequence(cs, at_state, SEQ_HUP);
1850                         return;
1851                 }
1852
1853         if (cs->at_state.pending_commands & PC_INIT) {
1854                 cs->at_state.pending_commands &= ~PC_INIT;
1855                 cs->dle = 0; //FIXME
1856                 cs->inbuf->inputstate = INS_command;
1857                 //FIXME reset card state (or -> LOCK0)?
1858                 schedule_sequence(cs, &cs->at_state, SEQ_INIT);
1859                 return;
1860         }
1861         if (cs->at_state.pending_commands & PC_SHUTDOWN) {
1862                 cs->at_state.pending_commands &= ~PC_SHUTDOWN;
1863                 schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
1864                 return;
1865         }
1866         if (cs->at_state.pending_commands & PC_CIDMODE) {
1867                 cs->at_state.pending_commands &= ~PC_CIDMODE;
1868                 if (atomic_read(&cs->mode) == M_UNIMODEM) {
1869                         cs->retry_count = 1;
1870                         schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
1871                         return;
1872                 }
1873         }
1874
1875         for (i = 0; i < cs->channels; ++i) {
1876                 bcs = cs->bcs + i;
1877                 if (bcs->at_state.pending_commands & PC_DLE1) {
1878                         bcs->at_state.pending_commands &= ~PC_DLE1;
1879                         cs->curchannel = bcs->channel;
1880                         schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
1881                         return;
1882                 }
1883                 if (bcs->at_state.pending_commands & PC_ACCEPT) {
1884                         bcs->at_state.pending_commands &= ~PC_ACCEPT;
1885                         schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
1886                         return;
1887                 }
1888                 if (bcs->at_state.pending_commands & PC_DIAL) {
1889                         bcs->at_state.pending_commands &= ~PC_DIAL;
1890                         schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
1891                         return;
1892                 }
1893                 if (bcs->at_state.pending_commands & PC_CID) {
1894                         switch (atomic_read(&cs->mode)) {
1895                         case M_UNIMODEM:
1896                                 cs->at_state.pending_commands |= PC_CIDMODE;
1897                                 gig_dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
1898                                 atomic_set(&cs->commands_pending, 1);
1899                                 return;
1900 #ifdef GIG_MAYINITONDIAL
1901                         case M_UNKNOWN:
1902                                 schedule_init(cs, MS_INIT);
1903                                 return;
1904 #endif
1905                         }
1906                         bcs->at_state.pending_commands &= ~PC_CID;
1907                         cs->curchannel = bcs->channel;
1908 #ifdef GIG_RETRYCID
1909                         cs->retry_count = 2;
1910 #else
1911                         cs->retry_count = 1;
1912 #endif
1913                         schedule_sequence(cs, &cs->at_state, SEQ_CID);
1914                         return;
1915                 }
1916         }
1917 }
1918
1919 static void process_events(struct cardstate *cs)
1920 {
1921         struct event_t *ev;
1922         unsigned head, tail;
1923         int i;
1924         int check_flags = 0;
1925         int was_busy;
1926         unsigned long flags;
1927
1928         spin_lock_irqsave(&cs->ev_lock, flags);
1929         head = cs->ev_head;
1930
1931         for (i = 0; i < 2 * MAX_EVENTS; ++i) {
1932                 tail = cs->ev_tail;
1933                 if (tail == head) {
1934                         if (!check_flags && !atomic_read(&cs->commands_pending))
1935                                 break;
1936                         check_flags = 0;
1937                         spin_unlock_irqrestore(&cs->ev_lock, flags);
1938                         process_command_flags(cs);
1939                         spin_lock_irqsave(&cs->ev_lock, flags);
1940                         tail = cs->ev_tail;
1941                         if (tail == head) {
1942                                 if (!atomic_read(&cs->commands_pending))
1943                                         break;
1944                                 continue;
1945                         }
1946                 }
1947
1948                 ev = cs->events + head;
1949                 was_busy = cs->cur_at_seq != SEQ_NONE;
1950                 spin_unlock_irqrestore(&cs->ev_lock, flags);
1951                 process_event(cs, ev);
1952                 spin_lock_irqsave(&cs->ev_lock, flags);
1953                 kfree(ev->ptr);
1954                 ev->ptr = NULL;
1955                 if (was_busy && cs->cur_at_seq == SEQ_NONE)
1956                         check_flags = 1;
1957
1958                 head = (head + 1) % MAX_EVENTS;
1959                 cs->ev_head = head;
1960         }
1961
1962         spin_unlock_irqrestore(&cs->ev_lock, flags);
1963
1964         if (i == 2 * MAX_EVENTS) {
1965                 dev_err(cs->dev,
1966                         "infinite loop in process_events; aborting.\n");
1967         }
1968 }
1969
1970 /* tasklet scheduled on any event received from the Gigaset device
1971  * parameter:
1972  *      data    ISDN controller state structure
1973  */
1974 void gigaset_handle_event(unsigned long data)
1975 {
1976         struct cardstate *cs = (struct cardstate *) data;
1977
1978         /* handle incoming data on control/common channel */
1979         if (atomic_read(&cs->inbuf->head) != atomic_read(&cs->inbuf->tail)) {
1980                 gig_dbg(DEBUG_INTR, "processing new data");
1981                 cs->ops->handle_input(cs->inbuf);
1982         }
1983
1984         process_events(cs);
1985 }