/*
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* Stuff used by all variants of the driver
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*
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* Copyright (c) 2001 by Stefan Eilers,
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* Hansjoerg Lipp <hjlipp@web.de>,
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* Tilman Schmidt <tilman@imap.cc>.
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*
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* =====================================================================
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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* =====================================================================
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*/
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#include <linux/export.h>
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#include "gigaset.h"
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|
/* ========================================================== */
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/* bit masks for pending commands */
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#define PC_DIAL 0x001
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#define PC_HUP 0x002
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#define PC_INIT 0x004
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#define PC_DLE0 0x008
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#define PC_DLE1 0x010
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#define PC_SHUTDOWN 0x020
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#define PC_ACCEPT 0x040
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#define PC_CID 0x080
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#define PC_NOCID 0x100
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#define PC_CIDMODE 0x200
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#define PC_UMMODE 0x400
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/* types of modem responses */
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#define RT_NOTHING 0
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#define RT_ZSAU 1
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#define RT_RING 2
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#define RT_NUMBER 3
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#define RT_STRING 4
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#define RT_ZCAU 6
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/* Possible ASCII responses */
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#define RSP_OK 0
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#define RSP_ERROR 1
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#define RSP_ZGCI 3
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#define RSP_RING 4
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#define RSP_ZVLS 5
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#define RSP_ZCAU 6
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/* responses with values to store in at_state */
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/* - numeric */
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#define RSP_VAR 100
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#define RSP_ZSAU (RSP_VAR + VAR_ZSAU)
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#define RSP_ZDLE (RSP_VAR + VAR_ZDLE)
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#define RSP_ZCTP (RSP_VAR + VAR_ZCTP)
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/* - string */
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#define RSP_STR (RSP_VAR + VAR_NUM)
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#define RSP_NMBR (RSP_STR + STR_NMBR)
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#define RSP_ZCPN (RSP_STR + STR_ZCPN)
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#define RSP_ZCON (RSP_STR + STR_ZCON)
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#define RSP_ZBC (RSP_STR + STR_ZBC)
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#define RSP_ZHLC (RSP_STR + STR_ZHLC)
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#define RSP_WRONG_CID -2 /* unknown cid in cmd */
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#define RSP_INVAL -6 /* invalid response */
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#define RSP_NODEV -9 /* device not connected */
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#define RSP_NONE -19
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#define RSP_STRING -20
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#define RSP_NULL -21
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#define RSP_INIT -27
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#define RSP_ANY -26
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#define RSP_LAST -28
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/* actions for process_response */
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#define ACT_NOTHING 0
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#define ACT_SETDLE1 1
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#define ACT_SETDLE0 2
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#define ACT_FAILINIT 3
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#define ACT_HUPMODEM 4
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#define ACT_CONFIGMODE 5
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#define ACT_INIT 6
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#define ACT_DLE0 7
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#define ACT_DLE1 8
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#define ACT_FAILDLE0 9
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#define ACT_FAILDLE1 10
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#define ACT_RING 11
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#define ACT_CID 12
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#define ACT_FAILCID 13
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#define ACT_SDOWN 14
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#define ACT_FAILSDOWN 15
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#define ACT_DEBUG 16
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#define ACT_WARN 17
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#define ACT_DIALING 18
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#define ACT_ABORTDIAL 19
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#define ACT_DISCONNECT 20
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#define ACT_CONNECT 21
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#define ACT_REMOTEREJECT 22
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#define ACT_CONNTIMEOUT 23
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#define ACT_REMOTEHUP 24
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#define ACT_ABORTHUP 25
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#define ACT_ICALL 26
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#define ACT_ACCEPTED 27
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#define ACT_ABORTACCEPT 28
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#define ACT_TIMEOUT 29
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#define ACT_GETSTRING 30
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#define ACT_SETVER 31
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#define ACT_FAILVER 32
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#define ACT_GOTVER 33
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#define ACT_TEST 34
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#define ACT_ERROR 35
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#define ACT_ABORTCID 36
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#define ACT_ZCAU 37
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#define ACT_NOTIFY_BC_DOWN 38
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#define ACT_NOTIFY_BC_UP 39
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#define ACT_DIAL 40
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#define ACT_ACCEPT 41
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#define ACT_HUP 43
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#define ACT_IF_LOCK 44
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#define ACT_START 45
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#define ACT_STOP 46
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#define ACT_FAKEDLE0 47
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#define ACT_FAKEHUP 48
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#define ACT_FAKESDOWN 49
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#define ACT_SHUTDOWN 50
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#define ACT_PROC_CIDMODE 51
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#define ACT_UMODESET 52
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#define ACT_FAILUMODE 53
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#define ACT_CMODESET 54
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#define ACT_FAILCMODE 55
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#define ACT_IF_VER 56
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#define ACT_CMD 100
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/* at command sequences */
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#define SEQ_NONE 0
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#define SEQ_INIT 100
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#define SEQ_DLE0 200
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#define SEQ_DLE1 250
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#define SEQ_CID 300
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#define SEQ_NOCID 350
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#define SEQ_HUP 400
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#define SEQ_DIAL 600
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#define SEQ_ACCEPT 720
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#define SEQ_SHUTDOWN 500
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#define SEQ_CIDMODE 10
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#define SEQ_UMMODE 11
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|
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/* 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid),
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* 400: hup, 500: reset, 600: dial, 700: ring */
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struct reply_t gigaset_tab_nocid[] =
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{
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/* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout,
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* action, command */
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/* initialize device, set cid mode if possible */
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{RSP_INIT, -1, -1, SEQ_INIT, 100, 1, {ACT_TIMEOUT} },
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{EV_TIMEOUT, 100, 100, -1, 101, 3, {0}, "Z\r"},
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{RSP_OK, 101, 103, -1, 120, 5, {ACT_GETSTRING},
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"+GMR\r"},
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{EV_TIMEOUT, 101, 101, -1, 102, 5, {0}, "Z\r"},
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{RSP_ERROR, 101, 101, -1, 102, 5, {0}, "Z\r"},
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{EV_TIMEOUT, 102, 102, -1, 108, 5, {ACT_SETDLE1},
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"^SDLE=0\r"},
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{RSP_OK, 108, 108, -1, 104, -1},
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{RSP_ZDLE, 104, 104, 0, 103, 5, {0}, "Z\r"},
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{EV_TIMEOUT, 104, 104, -1, 0, 0, {ACT_FAILINIT} },
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{RSP_ERROR, 108, 108, -1, 0, 0, {ACT_FAILINIT} },
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{EV_TIMEOUT, 108, 108, -1, 105, 2, {ACT_SETDLE0,
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ACT_HUPMODEM,
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ACT_TIMEOUT} },
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{EV_TIMEOUT, 105, 105, -1, 103, 5, {0}, "Z\r"},
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{RSP_ERROR, 102, 102, -1, 107, 5, {0}, "^GETPRE\r"},
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{RSP_OK, 107, 107, -1, 0, 0, {ACT_CONFIGMODE} },
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{RSP_ERROR, 107, 107, -1, 0, 0, {ACT_FAILINIT} },
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{EV_TIMEOUT, 107, 107, -1, 0, 0, {ACT_FAILINIT} },
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{RSP_ERROR, 103, 103, -1, 0, 0, {ACT_FAILINIT} },
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{EV_TIMEOUT, 103, 103, -1, 0, 0, {ACT_FAILINIT} },
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{RSP_STRING, 120, 120, -1, 121, -1, {ACT_SETVER} },
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{EV_TIMEOUT, 120, 121, -1, 0, 0, {ACT_FAILVER,
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ACT_INIT} },
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{RSP_ERROR, 120, 121, -1, 0, 0, {ACT_FAILVER,
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ACT_INIT} },
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{RSP_OK, 121, 121, -1, 0, 0, {ACT_GOTVER,
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ACT_INIT} },
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{RSP_NONE, 121, 121, -1, 120, 0, {ACT_GETSTRING} },
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/* leave dle mode */
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{RSP_INIT, 0, 0, SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"},
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{RSP_OK, 201, 201, -1, 202, -1},
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{RSP_ZDLE, 202, 202, 0, 0, 0, {ACT_DLE0} },
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{RSP_NODEV, 200, 249, -1, 0, 0, {ACT_FAKEDLE0} },
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{RSP_ERROR, 200, 249, -1, 0, 0, {ACT_FAILDLE0} },
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{EV_TIMEOUT, 200, 249, -1, 0, 0, {ACT_FAILDLE0} },
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/* enter dle mode */
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{RSP_INIT, 0, 0, SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"},
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{RSP_OK, 251, 251, -1, 252, -1},
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{RSP_ZDLE, 252, 252, 1, 0, 0, {ACT_DLE1} },
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{RSP_ERROR, 250, 299, -1, 0, 0, {ACT_FAILDLE1} },
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{EV_TIMEOUT, 250, 299, -1, 0, 0, {ACT_FAILDLE1} },
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/* incoming call */
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{RSP_RING, -1, -1, -1, -1, -1, {ACT_RING} },
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/* get cid */
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{RSP_INIT, 0, 0, SEQ_CID, 301, 5, {0}, "^SGCI?\r"},
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{RSP_OK, 301, 301, -1, 302, -1},
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{RSP_ZGCI, 302, 302, -1, 0, 0, {ACT_CID} },
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{RSP_ERROR, 301, 349, -1, 0, 0, {ACT_FAILCID} },
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{EV_TIMEOUT, 301, 349, -1, 0, 0, {ACT_FAILCID} },
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/* enter cid mode */
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{RSP_INIT, 0, 0, SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"},
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{RSP_OK, 150, 150, -1, 0, 0, {ACT_CMODESET} },
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{RSP_ERROR, 150, 150, -1, 0, 0, {ACT_FAILCMODE} },
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{EV_TIMEOUT, 150, 150, -1, 0, 0, {ACT_FAILCMODE} },
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/* leave cid mode */
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{RSP_INIT, 0, 0, SEQ_UMMODE, 160, 5, {0}, "Z\r"},
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{RSP_OK, 160, 160, -1, 0, 0, {ACT_UMODESET} },
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{RSP_ERROR, 160, 160, -1, 0, 0, {ACT_FAILUMODE} },
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{EV_TIMEOUT, 160, 160, -1, 0, 0, {ACT_FAILUMODE} },
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/* abort getting cid */
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{RSP_INIT, 0, 0, SEQ_NOCID, 0, 0, {ACT_ABORTCID} },
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/* reset */
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{RSP_INIT, 0, 0, SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"},
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{RSP_OK, 504, 504, -1, 0, 0, {ACT_SDOWN} },
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{RSP_ERROR, 501, 599, -1, 0, 0, {ACT_FAILSDOWN} },
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{EV_TIMEOUT, 501, 599, -1, 0, 0, {ACT_FAILSDOWN} },
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{RSP_NODEV, 501, 599, -1, 0, 0, {ACT_FAKESDOWN} },
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{EV_PROC_CIDMODE, -1, -1, -1, -1, -1, {ACT_PROC_CIDMODE} },
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{EV_IF_LOCK, -1, -1, -1, -1, -1, {ACT_IF_LOCK} },
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{EV_IF_VER, -1, -1, -1, -1, -1, {ACT_IF_VER} },
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{EV_START, -1, -1, -1, -1, -1, {ACT_START} },
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{EV_STOP, -1, -1, -1, -1, -1, {ACT_STOP} },
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{EV_SHUTDOWN, -1, -1, -1, -1, -1, {ACT_SHUTDOWN} },
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/* misc. */
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{RSP_ERROR, -1, -1, -1, -1, -1, {ACT_ERROR} },
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{RSP_ZCAU, -1, -1, -1, -1, -1, {ACT_ZCAU} },
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{RSP_NONE, -1, -1, -1, -1, -1, {ACT_DEBUG} },
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{RSP_ANY, -1, -1, -1, -1, -1, {ACT_WARN} },
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{RSP_LAST}
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};
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/* 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring,
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* 400: hup, 750: accepted icall */
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struct reply_t gigaset_tab_cid[] =
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{
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/* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout,
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* action, command */
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/* dial */
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{EV_DIAL, -1, -1, -1, -1, -1, {ACT_DIAL} },
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{RSP_INIT, 0, 0, SEQ_DIAL, 601, 5, {ACT_CMD + AT_BC} },
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{RSP_OK, 601, 601, -1, 603, 5, {ACT_CMD + AT_PROTO} },
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{RSP_OK, 603, 603, -1, 604, 5, {ACT_CMD + AT_TYPE} },
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{RSP_OK, 604, 604, -1, 605, 5, {ACT_CMD + AT_MSN} },
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{RSP_NULL, 605, 605, -1, 606, 5, {ACT_CMD + AT_CLIP} },
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{RSP_OK, 605, 605, -1, 606, 5, {ACT_CMD + AT_CLIP} },
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{RSP_NULL, 606, 606, -1, 607, 5, {ACT_CMD + AT_ISO} },
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{RSP_OK, 606, 606, -1, 607, 5, {ACT_CMD + AT_ISO} },
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{RSP_OK, 607, 607, -1, 608, 5, {0}, "+VLS=17\r"},
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{RSP_OK, 608, 608, -1, 609, -1},
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{RSP_ZSAU, 609, 609, ZSAU_PROCEEDING, 610, 5, {ACT_CMD + AT_DIAL} },
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{RSP_OK, 610, 610, -1, 650, 0, {ACT_DIALING} },
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{RSP_ERROR, 601, 610, -1, 0, 0, {ACT_ABORTDIAL} },
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{EV_TIMEOUT, 601, 610, -1, 0, 0, {ACT_ABORTDIAL} },
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/* optional dialing responses */
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{EV_BC_OPEN, 650, 650, -1, 651, -1},
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{RSP_ZVLS, 609, 651, 17, -1, -1, {ACT_DEBUG} },
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{RSP_ZCTP, 610, 651, -1, -1, -1, {ACT_DEBUG} },
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{RSP_ZCPN, 610, 651, -1, -1, -1, {ACT_DEBUG} },
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{RSP_ZSAU, 650, 651, ZSAU_CALL_DELIVERED, -1, -1, {ACT_DEBUG} },
|
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/* connect */
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{RSP_ZSAU, 650, 650, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT} },
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{RSP_ZSAU, 651, 651, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT,
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ACT_NOTIFY_BC_UP} },
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{RSP_ZSAU, 750, 750, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT} },
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{RSP_ZSAU, 751, 751, ZSAU_ACTIVE, 800, -1, {ACT_CONNECT,
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ACT_NOTIFY_BC_UP} },
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{EV_BC_OPEN, 800, 800, -1, 800, -1, {ACT_NOTIFY_BC_UP} },
|
|
/* remote hangup */
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{RSP_ZSAU, 650, 651, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT} },
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{RSP_ZSAU, 750, 751, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP} },
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{RSP_ZSAU, 800, 800, ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP} },
|
|
/* hangup */
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{EV_HUP, -1, -1, -1, -1, -1, {ACT_HUP} },
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{RSP_INIT, -1, -1, SEQ_HUP, 401, 5, {0}, "+VLS=0\r"},
|
{RSP_OK, 401, 401, -1, 402, 5},
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{RSP_ZVLS, 402, 402, 0, 403, 5},
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{RSP_ZSAU, 403, 403, ZSAU_DISCONNECT_REQ, -1, -1, {ACT_DEBUG} },
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{RSP_ZSAU, 403, 403, ZSAU_NULL, 0, 0, {ACT_DISCONNECT} },
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{RSP_NODEV, 401, 403, -1, 0, 0, {ACT_FAKEHUP} },
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{RSP_ERROR, 401, 401, -1, 0, 0, {ACT_ABORTHUP} },
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{EV_TIMEOUT, 401, 403, -1, 0, 0, {ACT_ABORTHUP} },
|
|
{EV_BC_CLOSED, 0, 0, -1, 0, -1, {ACT_NOTIFY_BC_DOWN} },
|
|
/* ring */
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{RSP_ZBC, 700, 700, -1, -1, -1, {0} },
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{RSP_ZHLC, 700, 700, -1, -1, -1, {0} },
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{RSP_NMBR, 700, 700, -1, -1, -1, {0} },
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{RSP_ZCPN, 700, 700, -1, -1, -1, {0} },
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{RSP_ZCTP, 700, 700, -1, -1, -1, {0} },
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{EV_TIMEOUT, 700, 700, -1, 720, 720, {ACT_ICALL} },
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{EV_BC_CLOSED, 720, 720, -1, 0, -1, {ACT_NOTIFY_BC_DOWN} },
|
|
/*accept icall*/
|
{EV_ACCEPT, -1, -1, -1, -1, -1, {ACT_ACCEPT} },
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{RSP_INIT, 720, 720, SEQ_ACCEPT, 721, 5, {ACT_CMD + AT_PROTO} },
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{RSP_OK, 721, 721, -1, 722, 5, {ACT_CMD + AT_ISO} },
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{RSP_OK, 722, 722, -1, 723, 5, {0}, "+VLS=17\r"},
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{RSP_OK, 723, 723, -1, 724, 5, {0} },
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{RSP_ZVLS, 724, 724, 17, 750, 50, {ACT_ACCEPTED} },
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{RSP_ERROR, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT} },
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{EV_TIMEOUT, 721, 729, -1, 0, 0, {ACT_ABORTACCEPT} },
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{RSP_ZSAU, 700, 729, ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT} },
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{RSP_ZSAU, 700, 729, ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT} },
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{RSP_ZSAU, 700, 729, ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT} },
|
|
{EV_BC_OPEN, 750, 750, -1, 751, -1},
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{EV_TIMEOUT, 750, 751, -1, 0, 0, {ACT_CONNTIMEOUT} },
|
|
/* B channel closed (general case) */
|
{EV_BC_CLOSED, -1, -1, -1, -1, -1, {ACT_NOTIFY_BC_DOWN} },
|
|
/* misc. */
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{RSP_ZCON, -1, -1, -1, -1, -1, {ACT_DEBUG} },
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{RSP_ZCAU, -1, -1, -1, -1, -1, {ACT_ZCAU} },
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{RSP_NONE, -1, -1, -1, -1, -1, {ACT_DEBUG} },
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{RSP_ANY, -1, -1, -1, -1, -1, {ACT_WARN} },
|
{RSP_LAST}
|
};
|
|
|
static const struct resp_type_t {
|
char *response;
|
int resp_code;
|
int type;
|
}
|
resp_type[] =
|
{
|
{"OK", RSP_OK, RT_NOTHING},
|
{"ERROR", RSP_ERROR, RT_NOTHING},
|
{"ZSAU", RSP_ZSAU, RT_ZSAU},
|
{"ZCAU", RSP_ZCAU, RT_ZCAU},
|
{"RING", RSP_RING, RT_RING},
|
{"ZGCI", RSP_ZGCI, RT_NUMBER},
|
{"ZVLS", RSP_ZVLS, RT_NUMBER},
|
{"ZCTP", RSP_ZCTP, RT_NUMBER},
|
{"ZDLE", RSP_ZDLE, RT_NUMBER},
|
{"ZHLC", RSP_ZHLC, RT_STRING},
|
{"ZBC", RSP_ZBC, RT_STRING},
|
{"NMBR", RSP_NMBR, RT_STRING},
|
{"ZCPN", RSP_ZCPN, RT_STRING},
|
{"ZCON", RSP_ZCON, RT_STRING},
|
{NULL, 0, 0}
|
};
|
|
static const struct zsau_resp_t {
|
char *str;
|
int code;
|
}
|
zsau_resp[] =
|
{
|
{"OUTGOING_CALL_PROCEEDING", ZSAU_PROCEEDING},
|
{"CALL_DELIVERED", ZSAU_CALL_DELIVERED},
|
{"ACTIVE", ZSAU_ACTIVE},
|
{"DISCONNECT_IND", ZSAU_DISCONNECT_IND},
|
{"NULL", ZSAU_NULL},
|
{"DISCONNECT_REQ", ZSAU_DISCONNECT_REQ},
|
{NULL, ZSAU_UNKNOWN}
|
};
|
|
/* check for and remove fixed string prefix
|
* If s starts with prefix terminated by a non-alphanumeric character,
|
* return pointer to the first character after that, otherwise return NULL.
|
*/
|
static char *skip_prefix(char *s, const char *prefix)
|
{
|
while (*prefix)
|
if (*s++ != *prefix++)
|
return NULL;
|
if (isalnum(*s))
|
return NULL;
|
return s;
|
}
|
|
/* queue event with CID */
|
static void add_cid_event(struct cardstate *cs, int cid, int type,
|
void *ptr, int parameter)
|
{
|
unsigned long flags;
|
unsigned next, tail;
|
struct event_t *event;
|
|
gig_dbg(DEBUG_EVENT, "queueing event %d for cid %d", type, cid);
|
|
spin_lock_irqsave(&cs->ev_lock, flags);
|
|
tail = cs->ev_tail;
|
next = (tail + 1) % MAX_EVENTS;
|
if (unlikely(next == cs->ev_head)) {
|
dev_err(cs->dev, "event queue full\n");
|
kfree(ptr);
|
} else {
|
event = cs->events + tail;
|
event->type = type;
|
event->cid = cid;
|
event->ptr = ptr;
|
event->arg = NULL;
|
event->parameter = parameter;
|
event->at_state = NULL;
|
cs->ev_tail = next;
|
}
|
|
spin_unlock_irqrestore(&cs->ev_lock, flags);
|
}
|
|
/**
|
* gigaset_handle_modem_response() - process received modem response
|
* @cs: device descriptor structure.
|
*
|
* Called by asyncdata/isocdata if a block of data received from the
|
* device must be processed as a modem command response. The data is
|
* already in the cs structure.
|
*/
|
void gigaset_handle_modem_response(struct cardstate *cs)
|
{
|
char *eoc, *psep, *ptr;
|
const struct resp_type_t *rt;
|
const struct zsau_resp_t *zr;
|
int cid, parameter;
|
u8 type, value;
|
|
if (!cs->cbytes) {
|
/* ignore additional LFs/CRs (M10x config mode or cx100) */
|
gig_dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[0]);
|
return;
|
}
|
cs->respdata[cs->cbytes] = 0;
|
|
if (cs->at_state.getstring) {
|
/* state machine wants next line verbatim */
|
cs->at_state.getstring = 0;
|
ptr = kstrdup(cs->respdata, GFP_ATOMIC);
|
gig_dbg(DEBUG_EVENT, "string==%s", ptr ? ptr : "NULL");
|
add_cid_event(cs, 0, RSP_STRING, ptr, 0);
|
return;
|
}
|
|
/* look up response type */
|
for (rt = resp_type; rt->response; ++rt) {
|
eoc = skip_prefix(cs->respdata, rt->response);
|
if (eoc)
|
break;
|
}
|
if (!rt->response) {
|
add_cid_event(cs, 0, RSP_NONE, NULL, 0);
|
gig_dbg(DEBUG_EVENT, "unknown modem response: '%s'\n",
|
cs->respdata);
|
return;
|
}
|
|
/* check for CID */
|
psep = strrchr(cs->respdata, ';');
|
if (psep &&
|
!kstrtoint(psep + 1, 10, &cid) &&
|
cid >= 1 && cid <= 65535) {
|
/* valid CID: chop it off */
|
*psep = 0;
|
} else {
|
/* no valid CID: leave unchanged */
|
cid = 0;
|
}
|
|
gig_dbg(DEBUG_EVENT, "CMD received: %s", cs->respdata);
|
if (cid)
|
gig_dbg(DEBUG_EVENT, "CID: %d", cid);
|
|
switch (rt->type) {
|
case RT_NOTHING:
|
/* check parameter separator */
|
if (*eoc)
|
goto bad_param; /* extra parameter */
|
|
add_cid_event(cs, cid, rt->resp_code, NULL, 0);
|
break;
|
|
case RT_RING:
|
/* check parameter separator */
|
if (!*eoc)
|
eoc = NULL; /* no parameter */
|
else if (*eoc++ != ',')
|
goto bad_param;
|
|
add_cid_event(cs, 0, rt->resp_code, NULL, cid);
|
|
/* process parameters as individual responses */
|
while (eoc) {
|
/* look up parameter type */
|
psep = NULL;
|
for (rt = resp_type; rt->response; ++rt) {
|
psep = skip_prefix(eoc, rt->response);
|
if (psep)
|
break;
|
}
|
|
/* all legal parameters are of type RT_STRING */
|
if (!psep || rt->type != RT_STRING) {
|
dev_warn(cs->dev,
|
"illegal RING parameter: '%s'\n",
|
eoc);
|
return;
|
}
|
|
/* skip parameter value separator */
|
if (*psep++ != '=')
|
goto bad_param;
|
|
/* look up end of parameter */
|
eoc = strchr(psep, ',');
|
if (eoc)
|
*eoc++ = 0;
|
|
/* retrieve parameter value */
|
ptr = kstrdup(psep, GFP_ATOMIC);
|
|
/* queue event */
|
add_cid_event(cs, cid, rt->resp_code, ptr, 0);
|
}
|
break;
|
|
case RT_ZSAU:
|
/* check parameter separator */
|
if (!*eoc) {
|
/* no parameter */
|
add_cid_event(cs, cid, rt->resp_code, NULL, ZSAU_NONE);
|
break;
|
}
|
if (*eoc++ != '=')
|
goto bad_param;
|
|
/* look up parameter value */
|
for (zr = zsau_resp; zr->str; ++zr)
|
if (!strcmp(eoc, zr->str))
|
break;
|
if (!zr->str)
|
goto bad_param;
|
|
add_cid_event(cs, cid, rt->resp_code, NULL, zr->code);
|
break;
|
|
case RT_STRING:
|
/* check parameter separator */
|
if (*eoc++ != '=')
|
goto bad_param;
|
|
/* retrieve parameter value */
|
ptr = kstrdup(eoc, GFP_ATOMIC);
|
|
/* queue event */
|
add_cid_event(cs, cid, rt->resp_code, ptr, 0);
|
break;
|
|
case RT_ZCAU:
|
/* check parameter separators */
|
if (*eoc++ != '=')
|
goto bad_param;
|
psep = strchr(eoc, ',');
|
if (!psep)
|
goto bad_param;
|
*psep++ = 0;
|
|
/* decode parameter values */
|
if (kstrtou8(eoc, 16, &type) || kstrtou8(psep, 16, &value)) {
|
*--psep = ',';
|
goto bad_param;
|
}
|
parameter = (type << 8) | value;
|
|
add_cid_event(cs, cid, rt->resp_code, NULL, parameter);
|
break;
|
|
case RT_NUMBER:
|
/* check parameter separator */
|
if (*eoc++ != '=')
|
goto bad_param;
|
|
/* decode parameter value */
|
if (kstrtoint(eoc, 10, ¶meter))
|
goto bad_param;
|
|
/* special case ZDLE: set flag before queueing event */
|
if (rt->resp_code == RSP_ZDLE)
|
cs->dle = parameter;
|
|
add_cid_event(cs, cid, rt->resp_code, NULL, parameter);
|
break;
|
|
bad_param:
|
/* parameter unexpected, incomplete or malformed */
|
dev_warn(cs->dev, "bad parameter in response '%s'\n",
|
cs->respdata);
|
add_cid_event(cs, cid, rt->resp_code, NULL, -1);
|
break;
|
|
default:
|
dev_err(cs->dev, "%s: internal error on '%s'\n",
|
__func__, cs->respdata);
|
}
|
}
|
EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
|
|
/* disconnect_nobc
|
* process closing of connection associated with given AT state structure
|
* without B channel
|
*/
|
static void disconnect_nobc(struct at_state_t **at_state_p,
|
struct cardstate *cs)
|
{
|
unsigned long flags;
|
|
spin_lock_irqsave(&cs->lock, flags);
|
++(*at_state_p)->seq_index;
|
|
/* revert to selected idle mode */
|
if (!cs->cidmode) {
|
cs->at_state.pending_commands |= PC_UMMODE;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
|
cs->commands_pending = 1;
|
}
|
|
/* check for and deallocate temporary AT state */
|
if (!list_empty(&(*at_state_p)->list)) {
|
list_del(&(*at_state_p)->list);
|
kfree(*at_state_p);
|
*at_state_p = NULL;
|
}
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
}
|
|
/* disconnect_bc
|
* process closing of connection associated with given AT state structure
|
* and B channel
|
*/
|
static void disconnect_bc(struct at_state_t *at_state,
|
struct cardstate *cs, struct bc_state *bcs)
|
{
|
unsigned long flags;
|
|
spin_lock_irqsave(&cs->lock, flags);
|
++at_state->seq_index;
|
|
/* revert to selected idle mode */
|
if (!cs->cidmode) {
|
cs->at_state.pending_commands |= PC_UMMODE;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
|
cs->commands_pending = 1;
|
}
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
/* invoke hardware specific handler */
|
cs->ops->close_bchannel(bcs);
|
|
/* notify LL */
|
if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
|
bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
|
gigaset_isdn_hupD(bcs);
|
}
|
}
|
|
/* get_free_channel
|
* get a free AT state structure: either one of those associated with the
|
* B channels of the Gigaset device, or if none of those is available,
|
* a newly allocated one with bcs=NULL
|
* The structure should be freed by calling disconnect_nobc() after use.
|
*/
|
static inline struct at_state_t *get_free_channel(struct cardstate *cs,
|
int cid)
|
/* cids: >0: siemens-cid
|
* 0: without cid
|
* -1: no cid assigned yet
|
*/
|
{
|
unsigned long flags;
|
int i;
|
struct at_state_t *ret;
|
|
for (i = 0; i < cs->channels; ++i)
|
if (gigaset_get_channel(cs->bcs + i) >= 0) {
|
ret = &cs->bcs[i].at_state;
|
ret->cid = cid;
|
return ret;
|
}
|
|
spin_lock_irqsave(&cs->lock, flags);
|
ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC);
|
if (ret) {
|
gigaset_at_init(ret, NULL, cs, cid);
|
list_add(&ret->list, &cs->temp_at_states);
|
}
|
spin_unlock_irqrestore(&cs->lock, flags);
|
return ret;
|
}
|
|
static void init_failed(struct cardstate *cs, int mode)
|
{
|
int i;
|
struct at_state_t *at_state;
|
|
cs->at_state.pending_commands &= ~PC_INIT;
|
cs->mode = mode;
|
cs->mstate = MS_UNINITIALIZED;
|
gigaset_free_channels(cs);
|
for (i = 0; i < cs->channels; ++i) {
|
at_state = &cs->bcs[i].at_state;
|
if (at_state->pending_commands & PC_CID) {
|
at_state->pending_commands &= ~PC_CID;
|
at_state->pending_commands |= PC_NOCID;
|
cs->commands_pending = 1;
|
}
|
}
|
}
|
|
static void schedule_init(struct cardstate *cs, int state)
|
{
|
if (cs->at_state.pending_commands & PC_INIT) {
|
gig_dbg(DEBUG_EVENT, "not scheduling PC_INIT again");
|
return;
|
}
|
cs->mstate = state;
|
cs->mode = M_UNKNOWN;
|
gigaset_block_channels(cs);
|
cs->at_state.pending_commands |= PC_INIT;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_INIT");
|
cs->commands_pending = 1;
|
}
|
|
/* send an AT command
|
* adding the "AT" prefix, cid and DLE encapsulation as appropriate
|
*/
|
static void send_command(struct cardstate *cs, const char *cmd,
|
struct at_state_t *at_state)
|
{
|
int cid = at_state->cid;
|
struct cmdbuf_t *cb;
|
size_t buflen;
|
|
buflen = strlen(cmd) + 12; /* DLE ( A T 1 2 3 4 5 <cmd> DLE ) \0 */
|
cb = kmalloc(sizeof(struct cmdbuf_t) + buflen, GFP_ATOMIC);
|
if (!cb) {
|
dev_err(cs->dev, "%s: out of memory\n", __func__);
|
return;
|
}
|
if (cid > 0 && cid <= 65535)
|
cb->len = snprintf(cb->buf, buflen,
|
cs->dle ? "\020(AT%d%s\020)" : "AT%d%s",
|
cid, cmd);
|
else
|
cb->len = snprintf(cb->buf, buflen,
|
cs->dle ? "\020(AT%s\020)" : "AT%s",
|
cmd);
|
cb->offset = 0;
|
cb->next = NULL;
|
cb->wake_tasklet = NULL;
|
cs->ops->write_cmd(cs, cb);
|
}
|
|
static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid)
|
{
|
struct at_state_t *at_state;
|
int i;
|
unsigned long flags;
|
|
if (cid == 0)
|
return &cs->at_state;
|
|
for (i = 0; i < cs->channels; ++i)
|
if (cid == cs->bcs[i].at_state.cid)
|
return &cs->bcs[i].at_state;
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
list_for_each_entry(at_state, &cs->temp_at_states, list)
|
if (cid == at_state->cid) {
|
spin_unlock_irqrestore(&cs->lock, flags);
|
return at_state;
|
}
|
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
return NULL;
|
}
|
|
static void bchannel_down(struct bc_state *bcs)
|
{
|
if (bcs->chstate & CHS_B_UP) {
|
bcs->chstate &= ~CHS_B_UP;
|
gigaset_isdn_hupB(bcs);
|
}
|
|
if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
|
bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
|
gigaset_isdn_hupD(bcs);
|
}
|
|
gigaset_free_channel(bcs);
|
|
gigaset_bcs_reinit(bcs);
|
}
|
|
static void bchannel_up(struct bc_state *bcs)
|
{
|
if (bcs->chstate & CHS_B_UP) {
|
dev_notice(bcs->cs->dev, "%s: B channel already up\n",
|
__func__);
|
return;
|
}
|
|
bcs->chstate |= CHS_B_UP;
|
gigaset_isdn_connB(bcs);
|
}
|
|
static void start_dial(struct at_state_t *at_state, void *data,
|
unsigned seq_index)
|
{
|
struct bc_state *bcs = at_state->bcs;
|
struct cardstate *cs = at_state->cs;
|
char **commands = data;
|
unsigned long flags;
|
int i;
|
|
bcs->chstate |= CHS_NOTIFY_LL;
|
|
spin_lock_irqsave(&cs->lock, flags);
|
if (at_state->seq_index != seq_index) {
|
spin_unlock_irqrestore(&cs->lock, flags);
|
goto error;
|
}
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
for (i = 0; i < AT_NUM; ++i) {
|
kfree(bcs->commands[i]);
|
bcs->commands[i] = commands[i];
|
}
|
|
at_state->pending_commands |= PC_CID;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_CID");
|
cs->commands_pending = 1;
|
return;
|
|
error:
|
for (i = 0; i < AT_NUM; ++i) {
|
kfree(commands[i]);
|
commands[i] = NULL;
|
}
|
at_state->pending_commands |= PC_NOCID;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_NOCID");
|
cs->commands_pending = 1;
|
return;
|
}
|
|
static void start_accept(struct at_state_t *at_state)
|
{
|
struct cardstate *cs = at_state->cs;
|
struct bc_state *bcs = at_state->bcs;
|
int i;
|
|
for (i = 0; i < AT_NUM; ++i) {
|
kfree(bcs->commands[i]);
|
bcs->commands[i] = NULL;
|
}
|
|
bcs->commands[AT_PROTO] = kmalloc(9, GFP_ATOMIC);
|
bcs->commands[AT_ISO] = kmalloc(9, GFP_ATOMIC);
|
if (!bcs->commands[AT_PROTO] || !bcs->commands[AT_ISO]) {
|
dev_err(at_state->cs->dev, "out of memory\n");
|
/* error reset */
|
at_state->pending_commands |= PC_HUP;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_HUP");
|
cs->commands_pending = 1;
|
return;
|
}
|
|
snprintf(bcs->commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2);
|
snprintf(bcs->commands[AT_ISO], 9, "^SISO=%u\r", bcs->channel + 1);
|
|
at_state->pending_commands |= PC_ACCEPT;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_ACCEPT");
|
cs->commands_pending = 1;
|
}
|
|
static void do_start(struct cardstate *cs)
|
{
|
gigaset_free_channels(cs);
|
|
if (cs->mstate != MS_LOCKED)
|
schedule_init(cs, MS_INIT);
|
|
cs->isdn_up = 1;
|
gigaset_isdn_start(cs);
|
|
cs->waiting = 0;
|
wake_up(&cs->waitqueue);
|
}
|
|
static void finish_shutdown(struct cardstate *cs)
|
{
|
if (cs->mstate != MS_LOCKED) {
|
cs->mstate = MS_UNINITIALIZED;
|
cs->mode = M_UNKNOWN;
|
}
|
|
/* Tell the LL that the device is not available .. */
|
if (cs->isdn_up) {
|
cs->isdn_up = 0;
|
gigaset_isdn_stop(cs);
|
}
|
|
/* The rest is done by cleanup_cs() in process context. */
|
|
cs->cmd_result = -ENODEV;
|
cs->waiting = 0;
|
wake_up(&cs->waitqueue);
|
}
|
|
static void do_shutdown(struct cardstate *cs)
|
{
|
gigaset_block_channels(cs);
|
|
if (cs->mstate == MS_READY) {
|
cs->mstate = MS_SHUTDOWN;
|
cs->at_state.pending_commands |= PC_SHUTDOWN;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_SHUTDOWN");
|
cs->commands_pending = 1;
|
} else
|
finish_shutdown(cs);
|
}
|
|
static void do_stop(struct cardstate *cs)
|
{
|
unsigned long flags;
|
|
spin_lock_irqsave(&cs->lock, flags);
|
cs->connected = 0;
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
do_shutdown(cs);
|
}
|
|
/* Entering cid mode or getting a cid failed:
|
* try to initialize the device and try again.
|
*
|
* channel >= 0: getting cid for the channel failed
|
* channel < 0: entering cid mode failed
|
*
|
* returns 0 on success, <0 on failure
|
*/
|
static int reinit_and_retry(struct cardstate *cs, int channel)
|
{
|
int i;
|
|
if (--cs->retry_count <= 0)
|
return -EFAULT;
|
|
for (i = 0; i < cs->channels; ++i)
|
if (cs->bcs[i].at_state.cid > 0)
|
return -EBUSY;
|
|
if (channel < 0)
|
dev_warn(cs->dev,
|
"Could not enter cid mode. Reinit device and try again.\n");
|
else {
|
dev_warn(cs->dev,
|
"Could not get a call id. Reinit device and try again.\n");
|
cs->bcs[channel].at_state.pending_commands |= PC_CID;
|
}
|
schedule_init(cs, MS_INIT);
|
return 0;
|
}
|
|
static int at_state_invalid(struct cardstate *cs,
|
struct at_state_t *test_ptr)
|
{
|
unsigned long flags;
|
unsigned channel;
|
struct at_state_t *at_state;
|
int retval = 0;
|
|
spin_lock_irqsave(&cs->lock, flags);
|
|
if (test_ptr == &cs->at_state)
|
goto exit;
|
|
list_for_each_entry(at_state, &cs->temp_at_states, list)
|
if (at_state == test_ptr)
|
goto exit;
|
|
for (channel = 0; channel < cs->channels; ++channel)
|
if (&cs->bcs[channel].at_state == test_ptr)
|
goto exit;
|
|
retval = 1;
|
exit:
|
spin_unlock_irqrestore(&cs->lock, flags);
|
return retval;
|
}
|
|
static void handle_icall(struct cardstate *cs, struct bc_state *bcs,
|
struct at_state_t *at_state)
|
{
|
int retval;
|
|
retval = gigaset_isdn_icall(at_state);
|
switch (retval) {
|
case ICALL_ACCEPT:
|
break;
|
default:
|
dev_err(cs->dev, "internal error: disposition=%d\n", retval);
|
/* --v-- fall through --v-- */
|
case ICALL_IGNORE:
|
case ICALL_REJECT:
|
/* hang up actively
|
* Device doc says that would reject the call.
|
* In fact it doesn't.
|
*/
|
at_state->pending_commands |= PC_HUP;
|
cs->commands_pending = 1;
|
break;
|
}
|
}
|
|
static int do_lock(struct cardstate *cs)
|
{
|
int mode;
|
int i;
|
|
switch (cs->mstate) {
|
case MS_UNINITIALIZED:
|
case MS_READY:
|
if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) ||
|
cs->at_state.pending_commands)
|
return -EBUSY;
|
|
for (i = 0; i < cs->channels; ++i)
|
if (cs->bcs[i].at_state.pending_commands)
|
return -EBUSY;
|
|
if (gigaset_get_channels(cs) < 0)
|
return -EBUSY;
|
|
break;
|
case MS_LOCKED:
|
break;
|
default:
|
return -EBUSY;
|
}
|
|
mode = cs->mode;
|
cs->mstate = MS_LOCKED;
|
cs->mode = M_UNKNOWN;
|
|
return mode;
|
}
|
|
static int do_unlock(struct cardstate *cs)
|
{
|
if (cs->mstate != MS_LOCKED)
|
return -EINVAL;
|
|
cs->mstate = MS_UNINITIALIZED;
|
cs->mode = M_UNKNOWN;
|
gigaset_free_channels(cs);
|
if (cs->connected)
|
schedule_init(cs, MS_INIT);
|
|
return 0;
|
}
|
|
static void do_action(int action, struct cardstate *cs,
|
struct bc_state *bcs,
|
struct at_state_t **p_at_state, char **pp_command,
|
int *p_genresp, int *p_resp_code,
|
struct event_t *ev)
|
{
|
struct at_state_t *at_state = *p_at_state;
|
struct bc_state *bcs2;
|
unsigned long flags;
|
|
int channel;
|
|
unsigned char *s, *e;
|
int i;
|
unsigned long val;
|
|
switch (action) {
|
case ACT_NOTHING:
|
break;
|
case ACT_TIMEOUT:
|
at_state->waiting = 1;
|
break;
|
case ACT_INIT:
|
cs->at_state.pending_commands &= ~PC_INIT;
|
cs->cur_at_seq = SEQ_NONE;
|
cs->mode = M_UNIMODEM;
|
spin_lock_irqsave(&cs->lock, flags);
|
if (!cs->cidmode) {
|
spin_unlock_irqrestore(&cs->lock, flags);
|
gigaset_free_channels(cs);
|
cs->mstate = MS_READY;
|
break;
|
}
|
spin_unlock_irqrestore(&cs->lock, flags);
|
cs->at_state.pending_commands |= PC_CIDMODE;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
|
cs->commands_pending = 1;
|
break;
|
case ACT_FAILINIT:
|
dev_warn(cs->dev, "Could not initialize the device.\n");
|
cs->dle = 0;
|
init_failed(cs, M_UNKNOWN);
|
cs->cur_at_seq = SEQ_NONE;
|
break;
|
case ACT_CONFIGMODE:
|
init_failed(cs, M_CONFIG);
|
cs->cur_at_seq = SEQ_NONE;
|
break;
|
case ACT_SETDLE1:
|
cs->dle = 1;
|
/* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */
|
cs->inbuf[0].inputstate &=
|
~(INS_command | INS_DLE_command);
|
break;
|
case ACT_SETDLE0:
|
cs->dle = 0;
|
cs->inbuf[0].inputstate =
|
(cs->inbuf[0].inputstate & ~INS_DLE_command)
|
| INS_command;
|
break;
|
case ACT_CMODESET:
|
if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
|
gigaset_free_channels(cs);
|
cs->mstate = MS_READY;
|
}
|
cs->mode = M_CID;
|
cs->cur_at_seq = SEQ_NONE;
|
break;
|
case ACT_UMODESET:
|
cs->mode = M_UNIMODEM;
|
cs->cur_at_seq = SEQ_NONE;
|
break;
|
case ACT_FAILCMODE:
|
cs->cur_at_seq = SEQ_NONE;
|
if (cs->mstate == MS_INIT || cs->mstate == MS_RECOVER) {
|
init_failed(cs, M_UNKNOWN);
|
break;
|
}
|
if (reinit_and_retry(cs, -1) < 0)
|
schedule_init(cs, MS_RECOVER);
|
break;
|
case ACT_FAILUMODE:
|
cs->cur_at_seq = SEQ_NONE;
|
schedule_init(cs, MS_RECOVER);
|
break;
|
case ACT_HUPMODEM:
|
/* send "+++" (hangup in unimodem mode) */
|
if (cs->connected) {
|
struct cmdbuf_t *cb;
|
|
cb = kmalloc(sizeof(struct cmdbuf_t) + 3, GFP_ATOMIC);
|
if (!cb) {
|
dev_err(cs->dev, "%s: out of memory\n",
|
__func__);
|
return;
|
}
|
memcpy(cb->buf, "+++", 3);
|
cb->len = 3;
|
cb->offset = 0;
|
cb->next = NULL;
|
cb->wake_tasklet = NULL;
|
cs->ops->write_cmd(cs, cb);
|
}
|
break;
|
case ACT_RING:
|
/* get fresh AT state structure for new CID */
|
at_state = get_free_channel(cs, ev->parameter);
|
if (!at_state) {
|
dev_warn(cs->dev,
|
"RING ignored: could not allocate channel structure\n");
|
break;
|
}
|
|
/* initialize AT state structure
|
* note that bcs may be NULL if no B channel is free
|
*/
|
at_state->ConState = 700;
|
for (i = 0; i < STR_NUM; ++i) {
|
kfree(at_state->str_var[i]);
|
at_state->str_var[i] = NULL;
|
}
|
at_state->int_var[VAR_ZCTP] = -1;
|
|
spin_lock_irqsave(&cs->lock, flags);
|
at_state->timer_expires = RING_TIMEOUT;
|
at_state->timer_active = 1;
|
spin_unlock_irqrestore(&cs->lock, flags);
|
break;
|
case ACT_ICALL:
|
handle_icall(cs, bcs, at_state);
|
break;
|
case ACT_FAILSDOWN:
|
dev_warn(cs->dev, "Could not shut down the device.\n");
|
/* fall through */
|
case ACT_FAKESDOWN:
|
case ACT_SDOWN:
|
cs->cur_at_seq = SEQ_NONE;
|
finish_shutdown(cs);
|
break;
|
case ACT_CONNECT:
|
if (cs->onechannel) {
|
at_state->pending_commands |= PC_DLE1;
|
cs->commands_pending = 1;
|
break;
|
}
|
bcs->chstate |= CHS_D_UP;
|
gigaset_isdn_connD(bcs);
|
cs->ops->init_bchannel(bcs);
|
break;
|
case ACT_DLE1:
|
cs->cur_at_seq = SEQ_NONE;
|
bcs = cs->bcs + cs->curchannel;
|
|
bcs->chstate |= CHS_D_UP;
|
gigaset_isdn_connD(bcs);
|
cs->ops->init_bchannel(bcs);
|
break;
|
case ACT_FAKEHUP:
|
at_state->int_var[VAR_ZSAU] = ZSAU_NULL;
|
/* fall through */
|
case ACT_DISCONNECT:
|
cs->cur_at_seq = SEQ_NONE;
|
at_state->cid = -1;
|
if (!bcs) {
|
disconnect_nobc(p_at_state, cs);
|
} else if (cs->onechannel && cs->dle) {
|
/* Check for other open channels not needed:
|
* DLE only used for M10x with one B channel.
|
*/
|
at_state->pending_commands |= PC_DLE0;
|
cs->commands_pending = 1;
|
} else {
|
disconnect_bc(at_state, cs, bcs);
|
}
|
break;
|
case ACT_FAKEDLE0:
|
at_state->int_var[VAR_ZDLE] = 0;
|
cs->dle = 0;
|
/* fall through */
|
case ACT_DLE0:
|
cs->cur_at_seq = SEQ_NONE;
|
bcs2 = cs->bcs + cs->curchannel;
|
disconnect_bc(&bcs2->at_state, cs, bcs2);
|
break;
|
case ACT_ABORTHUP:
|
cs->cur_at_seq = SEQ_NONE;
|
dev_warn(cs->dev, "Could not hang up.\n");
|
at_state->cid = -1;
|
if (!bcs)
|
disconnect_nobc(p_at_state, cs);
|
else if (cs->onechannel)
|
at_state->pending_commands |= PC_DLE0;
|
else
|
disconnect_bc(at_state, cs, bcs);
|
schedule_init(cs, MS_RECOVER);
|
break;
|
case ACT_FAILDLE0:
|
cs->cur_at_seq = SEQ_NONE;
|
dev_warn(cs->dev, "Error leaving DLE mode.\n");
|
cs->dle = 0;
|
bcs2 = cs->bcs + cs->curchannel;
|
disconnect_bc(&bcs2->at_state, cs, bcs2);
|
schedule_init(cs, MS_RECOVER);
|
break;
|
case ACT_FAILDLE1:
|
cs->cur_at_seq = SEQ_NONE;
|
dev_warn(cs->dev,
|
"Could not enter DLE mode. Trying to hang up.\n");
|
channel = cs->curchannel;
|
cs->bcs[channel].at_state.pending_commands |= PC_HUP;
|
cs->commands_pending = 1;
|
break;
|
|
case ACT_CID: /* got cid; start dialing */
|
cs->cur_at_seq = SEQ_NONE;
|
channel = cs->curchannel;
|
if (ev->parameter > 0 && ev->parameter <= 65535) {
|
cs->bcs[channel].at_state.cid = ev->parameter;
|
cs->bcs[channel].at_state.pending_commands |=
|
PC_DIAL;
|
cs->commands_pending = 1;
|
break;
|
}
|
/* bad cid: fall through */
|
case ACT_FAILCID:
|
cs->cur_at_seq = SEQ_NONE;
|
channel = cs->curchannel;
|
if (reinit_and_retry(cs, channel) < 0) {
|
dev_warn(cs->dev,
|
"Could not get a call ID. Cannot dial.\n");
|
bcs2 = cs->bcs + channel;
|
disconnect_bc(&bcs2->at_state, cs, bcs2);
|
}
|
break;
|
case ACT_ABORTCID:
|
cs->cur_at_seq = SEQ_NONE;
|
bcs2 = cs->bcs + cs->curchannel;
|
disconnect_bc(&bcs2->at_state, cs, bcs2);
|
break;
|
|
case ACT_DIALING:
|
case ACT_ACCEPTED:
|
cs->cur_at_seq = SEQ_NONE;
|
break;
|
|
case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL procssng */
|
if (bcs)
|
disconnect_bc(at_state, cs, bcs);
|
else
|
disconnect_nobc(p_at_state, cs);
|
break;
|
|
case ACT_ABORTDIAL: /* error/timeout during dial preparation */
|
cs->cur_at_seq = SEQ_NONE;
|
at_state->pending_commands |= PC_HUP;
|
cs->commands_pending = 1;
|
break;
|
|
case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */
|
case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */
|
case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */
|
at_state->pending_commands |= PC_HUP;
|
cs->commands_pending = 1;
|
break;
|
case ACT_GETSTRING: /* warning: RING, ZDLE, ...
|
are not handled properly anymore */
|
at_state->getstring = 1;
|
break;
|
case ACT_SETVER:
|
if (!ev->ptr) {
|
*p_genresp = 1;
|
*p_resp_code = RSP_ERROR;
|
break;
|
}
|
s = ev->ptr;
|
|
if (!strcmp(s, "OK")) {
|
/* OK without version string: assume old response */
|
*p_genresp = 1;
|
*p_resp_code = RSP_NONE;
|
break;
|
}
|
|
for (i = 0; i < 4; ++i) {
|
val = simple_strtoul(s, (char **) &e, 10);
|
if (val > INT_MAX || e == s)
|
break;
|
if (i == 3) {
|
if (*e)
|
break;
|
} else if (*e != '.')
|
break;
|
else
|
s = e + 1;
|
cs->fwver[i] = val;
|
}
|
if (i != 4) {
|
*p_genresp = 1;
|
*p_resp_code = RSP_ERROR;
|
break;
|
}
|
cs->gotfwver = 0;
|
break;
|
case ACT_GOTVER:
|
if (cs->gotfwver == 0) {
|
cs->gotfwver = 1;
|
gig_dbg(DEBUG_EVENT,
|
"firmware version %02d.%03d.%02d.%02d",
|
cs->fwver[0], cs->fwver[1],
|
cs->fwver[2], cs->fwver[3]);
|
break;
|
}
|
/* fall through */
|
case ACT_FAILVER:
|
cs->gotfwver = -1;
|
dev_err(cs->dev, "could not read firmware version.\n");
|
break;
|
case ACT_ERROR:
|
gig_dbg(DEBUG_ANY, "%s: ERROR response in ConState %d",
|
__func__, at_state->ConState);
|
cs->cur_at_seq = SEQ_NONE;
|
break;
|
case ACT_DEBUG:
|
gig_dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
|
__func__, ev->type, at_state->ConState);
|
break;
|
case ACT_WARN:
|
dev_warn(cs->dev, "%s: resp_code %d in ConState %d!\n",
|
__func__, ev->type, at_state->ConState);
|
break;
|
case ACT_ZCAU:
|
dev_warn(cs->dev, "cause code %04x in connection state %d.\n",
|
ev->parameter, at_state->ConState);
|
break;
|
|
/* events from the LL */
|
|
case ACT_DIAL:
|
if (!ev->ptr) {
|
*p_genresp = 1;
|
*p_resp_code = RSP_ERROR;
|
break;
|
}
|
start_dial(at_state, ev->ptr, ev->parameter);
|
break;
|
case ACT_ACCEPT:
|
start_accept(at_state);
|
break;
|
case ACT_HUP:
|
at_state->pending_commands |= PC_HUP;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_HUP");
|
cs->commands_pending = 1;
|
break;
|
|
/* hotplug events */
|
|
case ACT_STOP:
|
do_stop(cs);
|
break;
|
case ACT_START:
|
do_start(cs);
|
break;
|
|
/* events from the interface */
|
|
case ACT_IF_LOCK:
|
cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs);
|
cs->waiting = 0;
|
wake_up(&cs->waitqueue);
|
break;
|
case ACT_IF_VER:
|
if (ev->parameter != 0)
|
cs->cmd_result = -EINVAL;
|
else if (cs->gotfwver != 1) {
|
cs->cmd_result = -ENOENT;
|
} else {
|
memcpy(ev->arg, cs->fwver, sizeof cs->fwver);
|
cs->cmd_result = 0;
|
}
|
cs->waiting = 0;
|
wake_up(&cs->waitqueue);
|
break;
|
|
/* events from the proc file system */
|
|
case ACT_PROC_CIDMODE:
|
spin_lock_irqsave(&cs->lock, flags);
|
if (ev->parameter != cs->cidmode) {
|
cs->cidmode = ev->parameter;
|
if (ev->parameter) {
|
cs->at_state.pending_commands |= PC_CIDMODE;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
|
} else {
|
cs->at_state.pending_commands |= PC_UMMODE;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
|
}
|
cs->commands_pending = 1;
|
}
|
spin_unlock_irqrestore(&cs->lock, flags);
|
cs->waiting = 0;
|
wake_up(&cs->waitqueue);
|
break;
|
|
/* events from the hardware drivers */
|
|
case ACT_NOTIFY_BC_DOWN:
|
bchannel_down(bcs);
|
break;
|
case ACT_NOTIFY_BC_UP:
|
bchannel_up(bcs);
|
break;
|
case ACT_SHUTDOWN:
|
do_shutdown(cs);
|
break;
|
|
|
default:
|
if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) {
|
*pp_command = at_state->bcs->commands[action - ACT_CMD];
|
if (!*pp_command) {
|
*p_genresp = 1;
|
*p_resp_code = RSP_NULL;
|
}
|
} else
|
dev_err(cs->dev, "%s: action==%d!\n", __func__, action);
|
}
|
}
|
|
/* State machine to do the calling and hangup procedure */
|
static void process_event(struct cardstate *cs, struct event_t *ev)
|
{
|
struct bc_state *bcs;
|
char *p_command = NULL;
|
struct reply_t *rep;
|
int rcode;
|
int genresp = 0;
|
int resp_code = RSP_ERROR;
|
struct at_state_t *at_state;
|
int index;
|
int curact;
|
unsigned long flags;
|
|
if (ev->cid >= 0) {
|
at_state = at_state_from_cid(cs, ev->cid);
|
if (!at_state) {
|
gig_dbg(DEBUG_EVENT, "event %d for invalid cid %d",
|
ev->type, ev->cid);
|
gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID,
|
NULL, 0, NULL);
|
return;
|
}
|
} else {
|
at_state = ev->at_state;
|
if (at_state_invalid(cs, at_state)) {
|
gig_dbg(DEBUG_EVENT, "event for invalid at_state %p",
|
at_state);
|
return;
|
}
|
}
|
|
gig_dbg(DEBUG_EVENT, "connection state %d, event %d",
|
at_state->ConState, ev->type);
|
|
bcs = at_state->bcs;
|
|
/* Setting the pointer to the dial array */
|
rep = at_state->replystruct;
|
|
spin_lock_irqsave(&cs->lock, flags);
|
if (ev->type == EV_TIMEOUT) {
|
if (ev->parameter != at_state->timer_index
|
|| !at_state->timer_active) {
|
ev->type = RSP_NONE; /* old timeout */
|
gig_dbg(DEBUG_EVENT, "old timeout");
|
} else {
|
if (at_state->waiting)
|
gig_dbg(DEBUG_EVENT, "stopped waiting");
|
else
|
gig_dbg(DEBUG_EVENT, "timeout occurred");
|
}
|
}
|
spin_unlock_irqrestore(&cs->lock, flags);
|
|
/* if the response belongs to a variable in at_state->int_var[VAR_XXXX]
|
or at_state->str_var[STR_XXXX], set it */
|
if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) {
|
index = ev->type - RSP_VAR;
|
at_state->int_var[index] = ev->parameter;
|
} else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) {
|
index = ev->type - RSP_STR;
|
kfree(at_state->str_var[index]);
|
at_state->str_var[index] = ev->ptr;
|
ev->ptr = NULL; /* prevent process_events() from
|
deallocating ptr */
|
}
|
|
if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING)
|
at_state->getstring = 0;
|
|
/* Search row in dial array which matches modem response and current
|
constate */
|
for (;; rep++) {
|
rcode = rep->resp_code;
|
if (rcode == RSP_LAST) {
|
/* found nothing...*/
|
dev_warn(cs->dev, "%s: rcode=RSP_LAST: "
|
"resp_code %d in ConState %d!\n",
|
__func__, ev->type, at_state->ConState);
|
return;
|
}
|
if ((rcode == RSP_ANY || rcode == ev->type)
|
&& ((int) at_state->ConState >= rep->min_ConState)
|
&& (rep->max_ConState < 0
|
|| (int) at_state->ConState <= rep->max_ConState)
|
&& (rep->parameter < 0 || rep->parameter == ev->parameter))
|
break;
|
}
|
|
p_command = rep->command;
|
|
at_state->waiting = 0;
|
for (curact = 0; curact < MAXACT; ++curact) {
|
/* The row tells us what we should do ..
|
*/
|
do_action(rep->action[curact], cs, bcs, &at_state, &p_command,
|
&genresp, &resp_code, ev);
|
if (!at_state)
|
/* at_state destroyed by disconnect */
|
return;
|
}
|
|
/* Jump to the next con-state regarding the array */
|
if (rep->new_ConState >= 0)
|
at_state->ConState = rep->new_ConState;
|
|
if (genresp) {
|
spin_lock_irqsave(&cs->lock, flags);
|
at_state->timer_expires = 0;
|
at_state->timer_active = 0;
|
spin_unlock_irqrestore(&cs->lock, flags);
|
gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL);
|
} else {
|
/* Send command to modem if not NULL... */
|
if (p_command) {
|
if (cs->connected)
|
send_command(cs, p_command, at_state);
|
else
|
gigaset_add_event(cs, at_state, RSP_NODEV,
|
NULL, 0, NULL);
|
}
|
|
spin_lock_irqsave(&cs->lock, flags);
|
if (!rep->timeout) {
|
at_state->timer_expires = 0;
|
at_state->timer_active = 0;
|
} else if (rep->timeout > 0) { /* new timeout */
|
at_state->timer_expires = rep->timeout * 10;
|
at_state->timer_active = 1;
|
++at_state->timer_index;
|
}
|
spin_unlock_irqrestore(&cs->lock, flags);
|
}
|
}
|
|
static void schedule_sequence(struct cardstate *cs,
|
struct at_state_t *at_state, int sequence)
|
{
|
cs->cur_at_seq = sequence;
|
gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL);
|
}
|
|
static void process_command_flags(struct cardstate *cs)
|
{
|
struct at_state_t *at_state = NULL;
|
struct bc_state *bcs;
|
int i;
|
int sequence;
|
unsigned long flags;
|
|
cs->commands_pending = 0;
|
|
if (cs->cur_at_seq) {
|
gig_dbg(DEBUG_EVENT, "not searching scheduled commands: busy");
|
return;
|
}
|
|
gig_dbg(DEBUG_EVENT, "searching scheduled commands");
|
|
sequence = SEQ_NONE;
|
|
/* clear pending_commands and hangup channels on shutdown */
|
if (cs->at_state.pending_commands & PC_SHUTDOWN) {
|
cs->at_state.pending_commands &= ~PC_CIDMODE;
|
for (i = 0; i < cs->channels; ++i) {
|
bcs = cs->bcs + i;
|
at_state = &bcs->at_state;
|
at_state->pending_commands &=
|
~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
|
if (at_state->cid > 0)
|
at_state->pending_commands |= PC_HUP;
|
if (at_state->pending_commands & PC_CID) {
|
at_state->pending_commands |= PC_NOCID;
|
at_state->pending_commands &= ~PC_CID;
|
}
|
}
|
}
|
|
/* clear pending_commands and hangup channels on reset */
|
if (cs->at_state.pending_commands & PC_INIT) {
|
cs->at_state.pending_commands &= ~PC_CIDMODE;
|
for (i = 0; i < cs->channels; ++i) {
|
bcs = cs->bcs + i;
|
at_state = &bcs->at_state;
|
at_state->pending_commands &=
|
~(PC_DLE1 | PC_ACCEPT | PC_DIAL);
|
if (at_state->cid > 0)
|
at_state->pending_commands |= PC_HUP;
|
if (cs->mstate == MS_RECOVER) {
|
if (at_state->pending_commands & PC_CID) {
|
at_state->pending_commands |= PC_NOCID;
|
at_state->pending_commands &= ~PC_CID;
|
}
|
}
|
}
|
}
|
|
/* only switch back to unimodem mode if no commands are pending and
|
* no channels are up */
|
spin_lock_irqsave(&cs->lock, flags);
|
if (cs->at_state.pending_commands == PC_UMMODE
|
&& !cs->cidmode
|
&& list_empty(&cs->temp_at_states)
|
&& cs->mode == M_CID) {
|
sequence = SEQ_UMMODE;
|
at_state = &cs->at_state;
|
for (i = 0; i < cs->channels; ++i) {
|
bcs = cs->bcs + i;
|
if (bcs->at_state.pending_commands ||
|
bcs->at_state.cid > 0) {
|
sequence = SEQ_NONE;
|
break;
|
}
|
}
|
}
|
spin_unlock_irqrestore(&cs->lock, flags);
|
cs->at_state.pending_commands &= ~PC_UMMODE;
|
if (sequence != SEQ_NONE) {
|
schedule_sequence(cs, at_state, sequence);
|
return;
|
}
|
|
for (i = 0; i < cs->channels; ++i) {
|
bcs = cs->bcs + i;
|
if (bcs->at_state.pending_commands & PC_HUP) {
|
if (cs->dle) {
|
cs->curchannel = bcs->channel;
|
schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
|
return;
|
}
|
bcs->at_state.pending_commands &= ~PC_HUP;
|
if (bcs->at_state.pending_commands & PC_CID) {
|
/* not yet dialing: PC_NOCID is sufficient */
|
bcs->at_state.pending_commands |= PC_NOCID;
|
bcs->at_state.pending_commands &= ~PC_CID;
|
} else {
|
schedule_sequence(cs, &bcs->at_state, SEQ_HUP);
|
return;
|
}
|
}
|
if (bcs->at_state.pending_commands & PC_NOCID) {
|
bcs->at_state.pending_commands &= ~PC_NOCID;
|
cs->curchannel = bcs->channel;
|
schedule_sequence(cs, &cs->at_state, SEQ_NOCID);
|
return;
|
} else if (bcs->at_state.pending_commands & PC_DLE0) {
|
bcs->at_state.pending_commands &= ~PC_DLE0;
|
cs->curchannel = bcs->channel;
|
schedule_sequence(cs, &cs->at_state, SEQ_DLE0);
|
return;
|
}
|
}
|
|
list_for_each_entry(at_state, &cs->temp_at_states, list)
|
if (at_state->pending_commands & PC_HUP) {
|
at_state->pending_commands &= ~PC_HUP;
|
schedule_sequence(cs, at_state, SEQ_HUP);
|
return;
|
}
|
|
if (cs->at_state.pending_commands & PC_INIT) {
|
cs->at_state.pending_commands &= ~PC_INIT;
|
cs->dle = 0;
|
cs->inbuf->inputstate = INS_command;
|
schedule_sequence(cs, &cs->at_state, SEQ_INIT);
|
return;
|
}
|
if (cs->at_state.pending_commands & PC_SHUTDOWN) {
|
cs->at_state.pending_commands &= ~PC_SHUTDOWN;
|
schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN);
|
return;
|
}
|
if (cs->at_state.pending_commands & PC_CIDMODE) {
|
cs->at_state.pending_commands &= ~PC_CIDMODE;
|
if (cs->mode == M_UNIMODEM) {
|
cs->retry_count = 1;
|
schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE);
|
return;
|
}
|
}
|
|
for (i = 0; i < cs->channels; ++i) {
|
bcs = cs->bcs + i;
|
if (bcs->at_state.pending_commands & PC_DLE1) {
|
bcs->at_state.pending_commands &= ~PC_DLE1;
|
cs->curchannel = bcs->channel;
|
schedule_sequence(cs, &cs->at_state, SEQ_DLE1);
|
return;
|
}
|
if (bcs->at_state.pending_commands & PC_ACCEPT) {
|
bcs->at_state.pending_commands &= ~PC_ACCEPT;
|
schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT);
|
return;
|
}
|
if (bcs->at_state.pending_commands & PC_DIAL) {
|
bcs->at_state.pending_commands &= ~PC_DIAL;
|
schedule_sequence(cs, &bcs->at_state, SEQ_DIAL);
|
return;
|
}
|
if (bcs->at_state.pending_commands & PC_CID) {
|
switch (cs->mode) {
|
case M_UNIMODEM:
|
cs->at_state.pending_commands |= PC_CIDMODE;
|
gig_dbg(DEBUG_EVENT, "Scheduling PC_CIDMODE");
|
cs->commands_pending = 1;
|
return;
|
case M_UNKNOWN:
|
schedule_init(cs, MS_INIT);
|
return;
|
}
|
bcs->at_state.pending_commands &= ~PC_CID;
|
cs->curchannel = bcs->channel;
|
cs->retry_count = 2;
|
schedule_sequence(cs, &cs->at_state, SEQ_CID);
|
return;
|
}
|
}
|
}
|
|
static void process_events(struct cardstate *cs)
|
{
|
struct event_t *ev;
|
unsigned head, tail;
|
int i;
|
int check_flags = 0;
|
int was_busy;
|
unsigned long flags;
|
|
spin_lock_irqsave(&cs->ev_lock, flags);
|
head = cs->ev_head;
|
|
for (i = 0; i < 2 * MAX_EVENTS; ++i) {
|
tail = cs->ev_tail;
|
if (tail == head) {
|
if (!check_flags && !cs->commands_pending)
|
break;
|
check_flags = 0;
|
spin_unlock_irqrestore(&cs->ev_lock, flags);
|
process_command_flags(cs);
|
spin_lock_irqsave(&cs->ev_lock, flags);
|
tail = cs->ev_tail;
|
if (tail == head) {
|
if (!cs->commands_pending)
|
break;
|
continue;
|
}
|
}
|
|
ev = cs->events + head;
|
was_busy = cs->cur_at_seq != SEQ_NONE;
|
spin_unlock_irqrestore(&cs->ev_lock, flags);
|
process_event(cs, ev);
|
spin_lock_irqsave(&cs->ev_lock, flags);
|
kfree(ev->ptr);
|
ev->ptr = NULL;
|
if (was_busy && cs->cur_at_seq == SEQ_NONE)
|
check_flags = 1;
|
|
head = (head + 1) % MAX_EVENTS;
|
cs->ev_head = head;
|
}
|
|
spin_unlock_irqrestore(&cs->ev_lock, flags);
|
|
if (i == 2 * MAX_EVENTS) {
|
dev_err(cs->dev,
|
"infinite loop in process_events; aborting.\n");
|
}
|
}
|
|
/* tasklet scheduled on any event received from the Gigaset device
|
* parameter:
|
* data ISDN controller state structure
|
*/
|
void gigaset_handle_event(unsigned long data)
|
{
|
struct cardstate *cs = (struct cardstate *) data;
|
|
/* handle incoming data on control/common channel */
|
if (cs->inbuf->head != cs->inbuf->tail) {
|
gig_dbg(DEBUG_INTR, "processing new data");
|
cs->ops->handle_input(cs->inbuf);
|
}
|
|
process_events(cs);
|
}
|
