[PATCH 3/9] isdn4linux: Siemens Gigaset drivers - event layer
From: Hansjoerg Lipp
Date: Sun Dec 11 2005 - 13:25:42 EST
From: Tilman Schmidt <tilman@xxxxxxx>, Hansjoerg Lipp <hjlipp@xxxxxx>
This patch adds the event layer to the gigaset module. The event layer
serializes events from hardware, userspace, and other kernel subsystems.
Signed-off-by: Hansjoerg Lipp <hjlipp@xxxxxx>
Signed-off-by: Tilman Schmidt <tilman@xxxxxxx>
---
drivers/isdn/gigaset/ev-layer.c | 1983 ++++++++++++++++++++++++++++++++++++++++
1 files changed, 1983 insertions(+)
--- linux-2.6.14/drivers/isdn/gigaset/ev-layer.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.14-gig/drivers/isdn/gigaset/ev-layer.c 2005-12-11 13:21:42.000000000 +0100
@@ -0,0 +1,1983 @@
+/*
+ * Stuff used by all variants of the driver
+ *
+ * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@xxxxxxxx>,
+ * Hansjoerg Lipp <hjlipp@xxxxxx>,
+ * Tilman Schmidt <tilman@xxxxxxx>.
+ *
+ * =====================================================================
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ * =====================================================================
+ * ToDo: ...
+ * =====================================================================
+ * Version: $Id: ev-layer.c,v 1.4.2.14 2005/11/16 20:41:00 hjlipp Exp $
+ * =====================================================================
+ */
+
+#include "gigaset.h"
+
+/* ========================================================== */
+/* bit masks for pending commands */
+#define PC_INIT 0x004
+#define PC_DLE0 0x008
+#define PC_DLE1 0x010
+#define PC_CID 0x080
+#define PC_NOCID 0x100
+#define PC_HUP 0x002
+#define PC_DIAL 0x001
+#define PC_ACCEPT 0x040
+#define PC_SHUTDOWN 0x020
+#define PC_CIDMODE 0x200
+#define PC_UMMODE 0x400
+
+/* types of modem responses */
+#define RT_NOTHING 0
+#define RT_ZSAU 1
+#define RT_RING 2
+#define RT_NUMBER 3
+#define RT_STRING 4
+#define RT_HEX 5
+#define RT_ZCAU 6
+
+/* Possible ASCII responses */
+#define RSP_OK 0
+//#define RSP_BUSY 1
+//#define RSP_CONNECT 2
+#define RSP_ZGCI 3
+#define RSP_RING 4
+#define RSP_ZAOC 5
+#define RSP_ZCSTR 6
+#define RSP_ZCFGT 7
+#define RSP_ZCFG 8
+#define RSP_ZCCR 9
+#define RSP_EMPTY 10
+#define RSP_ZLOG 11
+#define RSP_ZCAU 12
+#define RSP_ZMWI 13
+#define RSP_ZABINFO 14
+#define RSP_ZSMLSTCHG 15
+#define RSP_VAR 100
+#define RSP_ZSAU (RSP_VAR + VAR_ZSAU)
+#define RSP_ZDLE (RSP_VAR + VAR_ZDLE)
+#define RSP_ZVLS (RSP_VAR + VAR_ZVLS)
+#define RSP_ZCTP (RSP_VAR + VAR_ZCTP)
+#define RSP_STR (RSP_VAR + VAR_NUM)
+#define RSP_NMBR (RSP_STR + STR_NMBR)
+#define RSP_ZCPN (RSP_STR + STR_ZCPN)
+#define RSP_ZCON (RSP_STR + STR_ZCON)
+#define RSP_ZBC (RSP_STR + STR_ZBC)
+#define RSP_ZHLC (RSP_STR + STR_ZHLC)
+#define RSP_ERROR -1 /* ERROR */
+#define RSP_WRONG_CID -2 /* unknown cid in cmd */
+//#define RSP_EMPTY -3
+#define RSP_UNKNOWN -4 /* unknown response */
+#define RSP_FAIL -5 /* internal error */
+#define RSP_INVAL -6 /* invalid response */
+
+#define RSP_NONE -19
+#define RSP_STRING -20
+#define RSP_NULL -21
+//#define RSP_RETRYFAIL -22
+//#define RSP_RETRY -23
+//#define RSP_SKIP -24
+#define RSP_INIT -27
+#define RSP_ANY -26
+#define RSP_LAST -28
+#define RSP_NODEV -9
+
+/* actions for process_response */
+#define ACT_NOTHING 0
+#define ACT_SETDLE1 1
+#define ACT_SETDLE0 2
+#define ACT_FAILINIT 3
+#define ACT_HUPMODEM 4
+#define ACT_CONFIGMODE 5
+#define ACT_INIT 6
+#define ACT_DLE0 7
+#define ACT_DLE1 8
+#define ACT_FAILDLE0 9
+#define ACT_FAILDLE1 10
+#define ACT_RING 11
+#define ACT_CID 12
+#define ACT_FAILCID 13
+#define ACT_SDOWN 14
+#define ACT_FAILSDOWN 15
+#define ACT_DEBUG 16
+#define ACT_WARN 17
+#define ACT_DIALING 18
+#define ACT_ABORTDIAL 19
+#define ACT_DISCONNECT 20
+#define ACT_CONNECT 21
+#define ACT_REMOTEREJECT 22
+#define ACT_CONNTIMEOUT 23
+#define ACT_REMOTEHUP 24
+#define ACT_ABORTHUP 25
+#define ACT_ICALL 26
+#define ACT_ACCEPTED 27
+#define ACT_ABORTACCEPT 28
+#define ACT_TIMEOUT 29
+#define ACT_GETSTRING 30
+#define ACT_SETVER 31
+#define ACT_FAILVER 32
+#define ACT_GOTVER 33
+#define ACT_TEST 34
+#define ACT_ERROR 35
+#define ACT_ABORTCID 36
+#define ACT_ZCAU 37
+#define ACT_NOTIFY_BC_DOWN 38
+#define ACT_NOTIFY_BC_UP 39
+#define ACT_DIAL 40
+#define ACT_ACCEPT 41
+#define ACT_PROTO_L2 42
+#define ACT_HUP 43
+#define ACT_IF_LOCK 44
+#define ACT_START 45
+#define ACT_STOP 46
+#define ACT_FAKEDLE0 47
+#define ACT_FAKEHUP 48
+#define ACT_FAKESDOWN 49
+#define ACT_SHUTDOWN 50
+#define ACT_PROC_CIDMODE 51
+#define ACT_UMODESET 52
+#define ACT_FAILUMODE 53
+#define ACT_CMODESET 54
+#define ACT_FAILCMODE 55
+#define ACT_IF_VER 56
+#define ACT_CMD 100
+
+/* at command sequences */
+#define SEQ_NONE 0
+#define SEQ_INIT 100
+#define SEQ_DLE0 200
+#define SEQ_DLE1 250
+#define SEQ_CID 300
+#define SEQ_NOCID 350
+#define SEQ_HUP 400
+#define SEQ_DIAL 600
+#define SEQ_ACCEPT 720
+#define SEQ_SHUTDOWN 500
+#define SEQ_CIDMODE 10
+#define SEQ_UMMODE 11
+
+
+// 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid), 400: hup, 500: reset, 600: dial, 700: ring
+struct reply_t gigaset_tab_nocid_m10x[]= /* with dle mode */
+{
+ /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
+
+ /* initialize device, set cid mode if possible */
+ //{RSP_INIT, -1, -1,100, 900, 0, {ACT_TEST}},
+ //{RSP_ERROR, 900,900, -1, 0, 0, {ACT_FAILINIT}},
+ //{RSP_OK, 900,900, -1, 100, INIT_TIMEOUT,
+ // {ACT_TIMEOUT}},
+
+ {RSP_INIT, -1, -1,SEQ_INIT, 100, INIT_TIMEOUT,
+ {ACT_TIMEOUT}}, /* wait until device is ready */
+
+ {EV_TIMEOUT, 100,100, -1, 101, 3, {0}, "Z\r"}, /* device in transparent mode? try to initialize it. */
+ {RSP_OK, 101,103, -1, 120, 5, {ACT_GETSTRING}, "+GMR\r"}, /* get version */
+
+ {EV_TIMEOUT, 101,101, -1, 102, 5, {0}, "Z\r"}, /* timeout => try once again. */
+ {RSP_ERROR, 101,101, -1, 102, 5, {0}, "Z\r"}, /* error => try once again. */
+
+ {EV_TIMEOUT, 102,102, -1, 108, 5, {ACT_SETDLE1}, "^SDLE=0\r"}, /* timeout => try again in DLE mode. */
+ {RSP_OK, 108,108, -1, 104,-1},
+ {RSP_ZDLE, 104,104, 0, 103, 5, {0}, "Z\r"},
+ {EV_TIMEOUT, 104,104, -1, 0, 0, {ACT_FAILINIT}},
+ {RSP_ERROR, 108,108, -1, 0, 0, {ACT_FAILINIT}},
+
+ {EV_TIMEOUT, 108,108, -1, 105, 2, {ACT_SETDLE0,
+ ACT_HUPMODEM,
+ ACT_TIMEOUT}}, /* still timeout => connection in unimodem mode? */
+ {EV_TIMEOUT, 105,105, -1, 103, 5, {0}, "Z\r"},
+
+ {RSP_ERROR, 102,102, -1, 107, 5, {0}, "^GETPRE\r"}, /* ERROR on ATZ => maybe in config mode? */
+ {RSP_OK, 107,107, -1, 0, 0, {ACT_CONFIGMODE}},
+ {RSP_ERROR, 107,107, -1, 0, 0, {ACT_FAILINIT}},
+ {EV_TIMEOUT, 107,107, -1, 0, 0, {ACT_FAILINIT}},
+
+ {RSP_ERROR, 103,103, -1, 0, 0, {ACT_FAILINIT}},
+ {EV_TIMEOUT, 103,103, -1, 0, 0, {ACT_FAILINIT}},
+
+ {RSP_STRING, 120,120, -1, 121,-1, {ACT_SETVER}},
+
+ {EV_TIMEOUT, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}},
+ {RSP_ERROR, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}},
+ {RSP_OK, 121,121, -1, 0, 0, {ACT_GOTVER, ACT_INIT}},
+#if 0
+ {EV_TIMEOUT, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"},
+ {RSP_ERROR, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"},
+ {RSP_OK, 121,121, -1, 130, 5, {ACT_GOTVER}, "^SGCI=1\r"},
+
+ {RSP_OK, 130,130, -1, 0, 0, {ACT_INIT}},
+ {RSP_ERROR, 130,130, -1, 0, 0, {ACT_FAILINIT}},
+ {EV_TIMEOUT, 130,130, -1, 0, 0, {ACT_FAILINIT}},
+#endif
+
+ /* leave dle mode */
+ {RSP_INIT, 0, 0,SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"},
+ {RSP_OK, 201,201, -1, 202,-1},
+ //{RSP_ZDLE, 202,202, 0, 202, 0, {ACT_ERROR}},//DELETE
+ {RSP_ZDLE, 202,202, 0, 0, 0, {ACT_DLE0}},
+ {RSP_NODEV, 200,249, -1, 0, 0, {ACT_FAKEDLE0}},
+ {RSP_ERROR, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
+ {EV_TIMEOUT, 200,249, -1, 0, 0, {ACT_FAILDLE0}},
+
+ /* enter dle mode */
+ {RSP_INIT, 0, 0,SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"},
+ {RSP_OK, 251,251, -1, 252,-1},
+ {RSP_ZDLE, 252,252, 1, 0, 0, {ACT_DLE1}},
+ {RSP_ERROR, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
+ {EV_TIMEOUT, 250,299, -1, 0, 0, {ACT_FAILDLE1}},
+
+ /* incoming call */
+ {RSP_RING, -1, -1, -1, -1,-1, {ACT_RING}},
+
+ /* get cid */
+ //{RSP_INIT, 0, 0,300, 901, 0, {ACT_TEST}},
+ //{RSP_ERROR, 901,901, -1, 0, 0, {ACT_FAILCID}},
+ //{RSP_OK, 901,901, -1, 301, 5, {0}, "^SGCI?\r"},
+
+ {RSP_INIT, 0, 0,SEQ_CID, 301, 5, {0}, "^SGCI?\r"},
+ {RSP_OK, 301,301, -1, 302,-1},
+ {RSP_ZGCI, 302,302, -1, 0, 0, {ACT_CID}},
+ {RSP_ERROR, 301,349, -1, 0, 0, {ACT_FAILCID}},
+ {EV_TIMEOUT, 301,349, -1, 0, 0, {ACT_FAILCID}},
+
+ /* enter cid mode */
+ {RSP_INIT, 0, 0,SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"},
+ {RSP_OK, 150,150, -1, 0, 0, {ACT_CMODESET}},
+ {RSP_ERROR, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
+ {EV_TIMEOUT, 150,150, -1, 0, 0, {ACT_FAILCMODE}},
+
+ /* leave cid mode */
+ //{RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "^SGCI=0\r"},
+ {RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "Z\r"},
+ {RSP_OK, 160,160, -1, 0, 0, {ACT_UMODESET}},
+ {RSP_ERROR, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
+ {EV_TIMEOUT, 160,160, -1, 0, 0, {ACT_FAILUMODE}},
+
+ /* abort getting cid */
+ {RSP_INIT, 0, 0,SEQ_NOCID, 0, 0, {ACT_ABORTCID}},
+
+ /* reset */
+#if 0
+ {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 503, 5, {0}, "^SGCI=0\r"},
+ {RSP_OK, 503,503, -1, 504, 5, {0}, "Z\r"},
+#endif
+ {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"},
+ {RSP_OK, 504,504, -1, 0, 0, {ACT_SDOWN}},
+ {RSP_ERROR, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
+ {EV_TIMEOUT, 501,599, -1, 0, 0, {ACT_FAILSDOWN}},
+ {RSP_NODEV, 501,599, -1, 0, 0, {ACT_FAKESDOWN}},
+
+ {EV_PROC_CIDMODE,-1, -1, -1, -1,-1, {ACT_PROC_CIDMODE}}, //FIXME
+ {EV_IF_LOCK, -1, -1, -1, -1,-1, {ACT_IF_LOCK}}, //FIXME
+ {EV_IF_VER, -1, -1, -1, -1,-1, {ACT_IF_VER}}, //FIXME
+ {EV_START, -1, -1, -1, -1,-1, {ACT_START}}, //FIXME
+ {EV_STOP, -1, -1, -1, -1,-1, {ACT_STOP}}, //FIXME
+ {EV_SHUTDOWN, -1, -1, -1, -1,-1, {ACT_SHUTDOWN}}, //FIXME
+
+ /* misc. */
+ {RSP_EMPTY, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+ {RSP_ZCFGT, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+ {RSP_ZCFG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+ {RSP_ZLOG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+ {RSP_ZMWI, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+ {RSP_ZABINFO, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+ {RSP_ZSMLSTCHG,-1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+
+ {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
+ {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
+ {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
+ {RSP_LAST}
+};
+
+// 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring, 400: hup, 750: accepted icall
+struct reply_t gigaset_tab_cid_m10x[] = /* for M10x */
+{
+ /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
+
+ /* dial */
+ {EV_DIAL, -1, -1, -1, -1,-1, {ACT_DIAL}}, //FIXME
+ {RSP_INIT, 0, 0,SEQ_DIAL, 601, 5, {ACT_CMD+AT_BC}},
+ {RSP_OK, 601,601, -1, 602, 5, {ACT_CMD+AT_HLC}},
+ {RSP_NULL, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
+ {RSP_OK, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}},
+ {RSP_OK, 603,603, -1, 604, 5, {ACT_CMD+AT_TYPE}},
+ {RSP_OK, 604,604, -1, 605, 5, {ACT_CMD+AT_MSN}},
+ {RSP_OK, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
+ {RSP_NULL, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}},
+ {RSP_OK, 606,606, -1, 607, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
+ {RSP_OK, 607,607, -1, 608,-1},
+ //{RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 608, 0, {ACT_ERROR}},//DELETE
+ {RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 609, 5, {ACT_CMD+AT_DIAL}},
+ {RSP_OK, 609,609, -1, 650, 0, {ACT_DIALING}},
+
+ {RSP_ZVLS, 608,608, 17, -1,-1, {ACT_DEBUG}},
+ {RSP_ZCTP, 609,609, -1, -1,-1, {ACT_DEBUG}},
+ {RSP_ZCPN, 609,609, -1, -1,-1, {ACT_DEBUG}},
+ {RSP_ERROR, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
+ {EV_TIMEOUT, 601,609, -1, 0, 0, {ACT_ABORTDIAL}},
+
+ /* dialing */
+ {RSP_ZCTP, 650,650, -1, -1,-1, {ACT_DEBUG}},
+ {RSP_ZCPN, 650,650, -1, -1,-1, {ACT_DEBUG}},
+ {RSP_ZSAU, 650,650,ZSAU_CALL_DELIVERED, -1,-1, {ACT_DEBUG}}, /* some devices don't send this */
+
+ /* connection established */
+ {RSP_ZSAU, 650,650,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
+ {RSP_ZSAU, 750,750,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1
+
+ {EV_BC_OPEN, 800,800, -1, 800,-1, {ACT_NOTIFY_BC_UP}}, //FIXME new constate + timeout
+
+ /* remote hangup */
+ {RSP_ZSAU, 650,650,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT}},
+ {RSP_ZSAU, 750,750,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
+ {RSP_ZSAU, 800,800,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}},
+
+ /* hangup */
+ {EV_HUP, -1, -1, -1, -1,-1, {ACT_HUP}}, //FIXME
+ {RSP_INIT, -1, -1,SEQ_HUP, 401, 5, {0}, "+VLS=0\r"}, /* hang up */ //-1,-1?
+ {RSP_OK, 401,401, -1, 402, 5},
+ {RSP_ZVLS, 402,402, 0, 403, 5},
+ {RSP_ZSAU, 403,403,ZSAU_DISCONNECT_REQ, -1,-1, {ACT_DEBUG}}, /* if not remote hup */
+ //{RSP_ZSAU, 403,403,ZSAU_NULL, 401, 0, {ACT_ERROR}}, //DELETE//FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
+ {RSP_ZSAU, 403,403,ZSAU_NULL, 0, 0, {ACT_DISCONNECT}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
+ {RSP_NODEV, 401,403, -1, 0, 0, {ACT_FAKEHUP}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver?
+ {RSP_ERROR, 401,401, -1, 0, 0, {ACT_ABORTHUP}},
+ {EV_TIMEOUT, 401,403, -1, 0, 0, {ACT_ABORTHUP}},
+
+ {EV_BC_CLOSED, 0, 0, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME new constate + timeout
+
+ /* ring */
+ {RSP_ZBC, 700,700, -1, -1,-1, {0}},
+ {RSP_ZHLC, 700,700, -1, -1,-1, {0}},
+ {RSP_NMBR, 700,700, -1, -1,-1, {0}},
+ {RSP_ZCPN, 700,700, -1, -1,-1, {0}},
+ {RSP_ZCTP, 700,700, -1, -1,-1, {0}},
+ {EV_TIMEOUT, 700,700, -1, 720,720, {ACT_ICALL}},
+ {EV_BC_CLOSED,720,720, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}},
+
+ /*accept icall*/
+ {EV_ACCEPT, -1, -1, -1, -1,-1, {ACT_ACCEPT}}, //FIXME
+ {RSP_INIT, 720,720,SEQ_ACCEPT, 721, 5, {ACT_CMD+AT_PROTO}},
+ {RSP_OK, 721,721, -1, 722, 5, {ACT_CMD+AT_ISO}},
+ {RSP_OK, 722,722, -1, 723, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */
+ {RSP_OK, 723,723, -1, 724, 5, {0}},
+ {RSP_ZVLS, 724,724, 17, 750,50, {ACT_ACCEPTED}},
+ {RSP_ERROR, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
+ {EV_TIMEOUT, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}},
+ {RSP_ZSAU, 700,729,ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT}},
+ {RSP_ZSAU, 700,729,ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT}},
+ {RSP_ZSAU, 700,729,ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT}},
+
+ {EV_TIMEOUT, 750,750, -1, 0, 0, {ACT_CONNTIMEOUT}},
+
+ /* misc. */
+ {EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME
+
+ {RSP_ZCON, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+ {RSP_ZCCR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+ {RSP_ZAOC, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+ {RSP_ZCSTR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME
+
+ {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}},
+ {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}},
+ {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}},
+ {RSP_LAST}
+};
+
+
+#if 0
+static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME aenderungen uebernehmen
+{
+ /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
+
+ {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
+ {RSP_LAST,0,0,0,0,0,0}
+};
+
+static struct reply_t tab_cid[] = /* no dle mode */ //FIXME aenderungen uebernehmen
+{
+ /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */
+
+ {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL},
+ {RSP_LAST,0,0,0,0,0,0}
+};
+#endif
+
+static struct resp_type_t resp_type[]=
+{
+ /*{"", RSP_EMPTY, RT_NOTHING},*/
+ {"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},
+ {"ZCFGT", RSP_ZCFGT, RT_NUMBER},
+ {"ZCCR", RSP_ZCCR, RT_NUMBER},
+ {"ZMWI", RSP_ZMWI, 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},
+ {"ZAOC", RSP_ZAOC, RT_STRING},
+ {"ZCSTR", RSP_ZCSTR, RT_STRING},
+ {"ZCFG", RSP_ZCFG, RT_HEX},
+ {"ZLOG", RSP_ZLOG, RT_NOTHING},
+ {"ZABINFO", RSP_ZABINFO, RT_NOTHING},
+ {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING},
+ {NULL,0,0}
+};
+
+/*
+ * Get integer from char-pointer
+ */
+static int isdn_getnum(char *p)
+{
+ int v = -1;
+
+ IFNULLRETVAL(p, -1);
+
+ dbg(DEBUG_TRANSCMD, "string: %s", p);
+
+ while (*p >= '0' && *p <= '9')
+ v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
+ if (*p)
+ v = -1; /* invalid Character */
+ return v;
+}
+
+/*
+ * Get integer from char-pointer
+ */
+static int isdn_gethex(char *p)
+{
+ int v = 0;
+ int c;
+
+ IFNULLRETVAL(p, -1);
+
+ dbg(DEBUG_TRANSCMD, "string: %s", p);
+
+ if (!*p)
+ return -1;
+
+ do {
+ if (v > (INT_MAX - 15) / 16)
+ return -1;
+ c = *p;
+ if (c >= '0' && c <= '9')
+ c -= '0';
+ else if (c >= 'a' && c <= 'f')
+ c -= 'a' - 10;
+ else if (c >= 'A' && c <= 'F')
+ c -= 'A' - 10;
+ else
+ return -1;
+ v = v * 16 + c;
+ } while (*++p);
+
+ return v;
+}
+
+static inline void new_index(atomic_t *index, int max)
+{
+ if (atomic_read(index) == max) //FIXME race?
+ atomic_set(index, 0);
+ else
+ atomic_inc(index);
+}
+
+/* retrieve CID from parsed response
+ * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
+ */
+static int cid_of_response(char *s)
+{
+ int cid;
+
+ if (s[-1] != ';')
+ return 0; /* no CID separator */
+ cid = isdn_getnum(s);
+ if (cid < 0)
+ return 0; /* CID not numeric */
+ if (cid < 1 || cid > 65535)
+ return -1; /* CID out of range */
+ return cid;
+ //FIXME is ;<digit>+ at end of non-CID response really impossible?
+}
+
+/* This function will be called via task queue from the callback handler.
+ * We received a modem response and have to handle it..
+ */
+void gigaset_handle_modem_response(struct cardstate *cs)
+{
+ unsigned char *argv[MAX_REC_PARAMS + 1];
+ int params;
+ int i, j;
+ struct resp_type_t *rt;
+ int curarg;
+ unsigned long flags;
+ unsigned next, tail, head;
+ struct event_t *event;
+ int resp_code;
+ int param_type;
+ int abort;
+ size_t len;
+ int cid;
+ int rawstring;
+
+ IFNULLRET(cs);
+
+ len = cs->cbytes;
+ if (!len) {
+ /* ignore additional LFs/CRs (M10x config mode or cx100) */
+ dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]);
+ return;
+ }
+ cs->respdata[len] = 0;
+ dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata);
+ argv[0] = cs->respdata;
+ params = 1;
+ if (cs->at_state.getstring) {
+ /* getstring only allowed without cid at the moment */
+ cs->at_state.getstring = 0;
+ rawstring = 1;
+ cid = 0;
+ } else {
+ /* parse line */
+ for (i = 0; i < len; i++)
+ switch (cs->respdata[i]) {
+ case ';':
+ case ',':
+ case '=':
+ if (params > MAX_REC_PARAMS) {
+ warn("too many parameters in response");
+ /* need last parameter (might be CID) */
+ params--;
+ }
+ argv[params++] = cs->respdata + i + 1;
+ }
+
+ rawstring = 0;
+ cid = params > 1 ? cid_of_response(argv[params-1]) : 0;
+ if (cid < 0) {
+ gigaset_add_event(cs, &cs->at_state, RSP_INVAL,
+ NULL, 0, NULL);
+ return;
+ }
+
+ for (j = 1; j < params; ++j)
+ argv[j][-1] = 0;
+
+ dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]);
+ if (cid) {
+ --params;
+ dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]);
+ }
+ dbg(DEBUG_TRANSCMD, "available params: %d", params - 1);
+ for (j = 1; j < params; j++)
+ dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]);
+ }
+
+ spin_lock_irqsave(&cs->ev_lock, flags);
+ head = atomic_read(&cs->ev_head);
+ tail = atomic_read(&cs->ev_tail);
+
+ abort = 1;
+ curarg = 0;
+ while (curarg < params) {
+ next = (tail + 1) % MAX_EVENTS;
+ if (unlikely(next == head)) {
+ err("event queue full");
+ break;
+ }
+
+ event = cs->events + tail;
+ event->at_state = NULL;
+ event->cid = cid;
+ event->ptr = NULL;
+ event->arg = NULL;
+ tail = next;
+
+ if (rawstring) {
+ resp_code = RSP_STRING;
+ param_type = RT_STRING;
+ } else {
+ for (rt = resp_type; rt->response; ++rt)
+ if (!strcmp(argv[curarg], rt->response))
+ break;
+
+ if (!rt->response) {
+ event->type = RSP_UNKNOWN;
+ warn("unknown modem response: %s",
+ argv[curarg]);
+ break;
+ }
+
+ resp_code = rt->resp_code;
+ param_type = rt->type;
+ ++curarg;
+ }
+
+ event->type = resp_code;
+
+ switch (param_type) {
+ case RT_NOTHING:
+ break;
+ case RT_RING:
+ if (!cid) {
+ err("received RING without CID!");
+ event->type = RSP_INVAL;
+ abort = 1;
+ } else {
+ event->cid = 0;
+ event->parameter = cid;
+ abort = 0;
+ }
+ break;
+ case RT_ZSAU:
+ if (curarg >= params) {
+ event->parameter = ZSAU_NONE;
+ break;
+ }
+ if (!strcmp(argv[curarg], "OUTGOING_CALL_PROCEEDING"))
+ event->parameter = ZSAU_OUTGOING_CALL_PROCEEDING;
+ else if (!strcmp(argv[curarg], "CALL_DELIVERED"))
+ event->parameter = ZSAU_CALL_DELIVERED;
+ else if (!strcmp(argv[curarg], "ACTIVE"))
+ event->parameter = ZSAU_ACTIVE;
+ else if (!strcmp(argv[curarg], "DISCONNECT_IND"))
+ event->parameter = ZSAU_DISCONNECT_IND;
+ else if (!strcmp(argv[curarg], "NULL"))
+ event->parameter = ZSAU_NULL;
+ else if (!strcmp(argv[curarg], "DISCONNECT_REQ"))
+ event->parameter = ZSAU_DISCONNECT_REQ;
+ else {
+ event->parameter = ZSAU_UNKNOWN;
+ warn("%s: unknown parameter %s after ZSAU",
+ __func__, argv[curarg]);
+ }
+ ++curarg;
+ break;
+ case RT_STRING:
+ if (curarg < params) {
+ len = strlen(argv[curarg]) + 1;
+ event->ptr = kmalloc(len, GFP_ATOMIC);
+ if (event->ptr)
+ memcpy(event->ptr, argv[curarg], len);
+ else
+ err("no memory for string!");
+ ++curarg;
+ }
+#ifdef CONFIG_GIGASET_DEBUG
+ if (!event->ptr)
+ dbg(DEBUG_CMD, "string==NULL");
+ else
+ dbg(DEBUG_CMD,
+ "string==%s", (char *) event->ptr);
+#endif
+ break;
+ case RT_ZCAU:
+ event->parameter = -1;
+ if (curarg + 1 < params) {
+ i = isdn_gethex(argv[curarg]);
+ j = isdn_gethex(argv[curarg + 1]);
+ if (i >= 0 && i < 256 && j >= 0 && j < 256)
+ event->parameter = (unsigned) i << 8
+ | j;
+ curarg += 2;
+ } else
+ curarg = params - 1;
+ break;
+ case RT_NUMBER:
+ case RT_HEX:
+ if (curarg < params) {
+ if (param_type == RT_HEX)
+ event->parameter =
+ isdn_gethex(argv[curarg]);
+ else
+ event->parameter =
+ isdn_getnum(argv[curarg]);
+ ++curarg;
+ } else
+ event->parameter = -1;
+#ifdef CONFIG_GIGASET_DEBUG
+ dbg(DEBUG_CMD, "parameter==%d", event->parameter);
+#endif
+ break;
+ }
+
+ if (resp_code == RSP_ZDLE)
+ cs->dle = event->parameter;
+
+ if (abort)
+ break;
+ }
+
+ atomic_set(&cs->ev_tail, tail);
+ spin_unlock_irqrestore(&cs->ev_lock, flags);
+
+ if (curarg != params)
+ dbg(DEBUG_ANY, "invalid number of processed parameters: %d/%d",
+ curarg, params);
+}
+EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
+
+/* disconnect
+ * process closing of connection associated with given AT state structure
+ */
+static void disconnect(struct at_state_t **at_state_p)
+{
+ unsigned long flags;
+ struct bc_state *bcs;
+ struct cardstate *cs;
+
+ IFNULLRET(at_state_p);
+ IFNULLRET(*at_state_p);
+ bcs = (*at_state_p)->bcs;
+ cs = (*at_state_p)->cs;
+ IFNULLRET(cs);
+
+ new_index(&(*at_state_p)->seq_index, MAX_SEQ_INDEX);
+
+ /* revert to selected idle mode */
+ if (!atomic_read(&cs->cidmode)) {
+ cs->at_state.pending_commands |= PC_UMMODE;
+ atomic_set(&cs->commands_pending, 1); //FIXME
+ dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
+ }
+
+ if (bcs) {
+ /* B channel assigned: invoke hardware specific handler */
+ cs->ops->close_bchannel(bcs);
+ } else {
+ /* no B channel assigned: just deallocate */
+ spin_lock_irqsave(&cs->lock, flags);
+ if ((*at_state_p)->prev)
+ (*at_state_p)->prev->next = (*at_state_p)->next;
+ else
+ cs->at_state.next = (*at_state_p)->next;
+ if ((*at_state_p)->next)
+ (*at_state_p)->next->prev = (*at_state_p)->prev;
+ kfree(*at_state_p);
+ *at_state_p = NULL;
+ spin_unlock_irqrestore(&cs->lock, flags);
+ }
+}
+
+/* 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() 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)) {
+ 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);
+ ret->next = cs->at_state.next;
+ if (ret->next)
+ ret->next->prev = ret;
+ cs->at_state.next = ret;
+ }
+ 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;
+ atomic_set(&cs->mode, mode);
+ atomic_set(&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;
+ atomic_set(&cs->commands_pending, 1);
+ }
+ }
+}
+
+static void schedule_init(struct cardstate *cs, int state)
+{
+ if (cs->at_state.pending_commands & PC_INIT) {
+ dbg(DEBUG_CMD, "not scheduling PC_INIT again");
+ return;
+ }
+ atomic_set(&cs->mstate, state);
+ atomic_set(&cs->mode, M_UNKNOWN);
+ gigaset_block_channels(cs);
+ cs->at_state.pending_commands |= PC_INIT;
+ atomic_set(&cs->commands_pending, 1);
+ dbg(DEBUG_CMD, "Scheduling PC_INIT");
+}
+
+/* Add "AT" to a command, add the cid, dle encode it, send the result to the hardware. */
+static void send_command(struct cardstate *cs, const char *cmd, int cid,
+ int dle, unsigned int __nocast kmallocflags)
+{
+ size_t cmdlen, buflen;
+ char *cmdpos, *cmdbuf, *cmdtail;
+
+ cmdlen = strlen(cmd);
+ buflen = 11 + cmdlen;
+
+ if (likely(buflen > cmdlen)) {
+ cmdbuf = kmalloc(buflen, kmallocflags);
+ if (likely(cmdbuf != NULL)) {
+ cmdpos = cmdbuf + 9;
+ cmdtail = cmdpos + cmdlen;
+ memcpy(cmdpos, cmd, cmdlen);
+
+ if (cid > 0 && cid <= 65535) {
+ do {
+ *--cmdpos = '0' + cid % 10;
+ cid /= 10;
+ ++cmdlen;
+ } while (cid);
+ }
+
+ cmdlen += 2;
+ *--cmdpos = 'T';
+ *--cmdpos = 'A';
+
+ if (dle) {
+ cmdlen += 4;
+ *--cmdpos = '(';
+ *--cmdpos = 0x10;
+ *cmdtail++ = 0x10;
+ *cmdtail++ = ')';
+ }
+
+ cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL);
+ kfree(cmdbuf);
+ } else
+ err("no memory for command buffer");
+ } else
+ err("overflow in buflen");
+}
+
+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;
+
+ 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);
+
+ for (at_state = &cs->at_state; at_state; at_state = at_state->next)
+ if (cid == at_state->cid)
+ break;
+
+ spin_unlock_irqrestore(&cs->lock, flags);
+
+ return at_state;
+}
+
+static void bchannel_down(struct bc_state *bcs)
+{
+ IFNULLRET(bcs);
+ IFNULLRET(bcs->cs);
+
+ if (bcs->chstate & CHS_B_UP) {
+ bcs->chstate &= ~CHS_B_UP;
+ gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
+ }
+
+ if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
+ bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
+ gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
+ }
+
+ gigaset_free_channel(bcs);
+
+ gigaset_bcs_reinit(bcs);
+}
+
+static void bchannel_up(struct bc_state *bcs)
+{
+ IFNULLRET(bcs);
+
+ if (!(bcs->chstate & CHS_D_UP)) {
+ notice("%s: D channel not up", __func__);
+ bcs->chstate |= CHS_D_UP;
+ gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
+ }
+
+ if (bcs->chstate & CHS_B_UP) {
+ notice("%s: B channel already up", __func__);
+ return;
+ }
+
+ bcs->chstate |= CHS_B_UP;
+ gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
+}
+
+static void start_dial(struct at_state_t *at_state, void *data, int seq_index)
+{
+ struct bc_state *bcs = at_state->bcs;
+ struct cardstate *cs = at_state->cs;
+ int retval;
+
+ bcs->chstate |= CHS_NOTIFY_LL;
+ //atomic_set(&bcs->status, BCS_INIT);
+
+ if (atomic_read(&at_state->seq_index) != seq_index)
+ goto error;
+
+ retval = gigaset_isdn_setup_dial(at_state, data);
+ if (retval != 0)
+ goto error;
+
+
+ at_state->pending_commands |= PC_CID;
+ dbg(DEBUG_CMD, "Scheduling PC_CID");
+//#ifdef GIG_MAYINITONDIAL
+// if (atomic_read(&cs->MState) == MS_UNKNOWN) {
+// cs->at_state.pending_commands |= PC_INIT;
+// dbg(DEBUG_CMD, "Scheduling PC_INIT");
+// }
+//#endif
+ atomic_set(&cs->commands_pending, 1); //FIXME
+ return;
+
+error:
+ at_state->pending_commands |= PC_NOCID;
+ dbg(DEBUG_CMD, "Scheduling PC_NOCID");
+ atomic_set(&cs->commands_pending, 1); //FIXME
+ return;
+}
+
+static void start_accept(struct at_state_t *at_state)
+{
+ struct cardstate *cs = at_state->cs;
+ int retval;
+
+ retval = gigaset_isdn_setup_accept(at_state);
+
+ if (retval == 0) {
+ at_state->pending_commands |= PC_ACCEPT;
+ dbg(DEBUG_CMD, "Scheduling PC_ACCEPT");
+ atomic_set(&cs->commands_pending, 1); //FIXME
+ } else {
+ //FIXME
+ at_state->pending_commands |= PC_HUP;
+ dbg(DEBUG_CMD, "Scheduling PC_HUP");
+ atomic_set(&cs->commands_pending, 1); //FIXME
+ }
+}
+
+static void do_start(struct cardstate *cs)
+{
+ gigaset_free_channels(cs);
+
+ if (atomic_read(&cs->mstate) != MS_LOCKED)
+ schedule_init(cs, MS_INIT);
+
+ gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
+ // FIXME: not in locked mode
+ // FIXME 2: only after init sequence
+
+ cs->waiting = 0;
+ wake_up(&cs->waitqueue);
+}
+
+static void finish_shutdown(struct cardstate *cs)
+{
+ if (atomic_read(&cs->mstate) != MS_LOCKED) {
+ atomic_set(&cs->mstate, MS_UNINITIALIZED);
+ atomic_set(&cs->mode, M_UNKNOWN);
+ }
+
+ /* The rest is done by cleanup_cs () in user mode. */
+
+ cs->cmd_result = -ENODEV;
+ cs->waiting = 0;
+ wake_up_interruptible(&cs->waitqueue);
+}
+
+static void do_shutdown(struct cardstate *cs)
+{
+ gigaset_block_channels(cs);
+
+ if (atomic_read(&cs->mstate) == MS_READY) {
+ atomic_set(&cs->mstate, MS_SHUTDOWN);
+ cs->at_state.pending_commands |= PC_SHUTDOWN;
+ atomic_set(&cs->commands_pending, 1); //FIXME
+ dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN"); //FIXME
+ //gigaset_schedule_event(cs); //FIXME
+ } else
+ finish_shutdown(cs);
+}
+
+static void do_stop(struct cardstate *cs)
+{
+ 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 failure
+ */
+static int reinit_and_retry(struct cardstate *cs, int channel)
+{
+ int i;
+
+ if (--cs->retry_count <= 0)
+ return 0;
+
+ for (i = 0; i < cs->channels; ++i)
+ if (cs->bcs[i].at_state.cid > 0)
+ return 0;
+
+ if (channel < 0)
+ warn("Could not enter cid mode. Reinit device and try again.");
+ else {
+ warn("Could not get a call id. Reinit device and try again.");
+ cs->bcs[channel].at_state.pending_commands |= PC_CID;
+ }
+ schedule_init(cs, MS_INIT);
+ return 1;
+}
+
+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);
+
+ for (at_state = &cs->at_state; at_state; at_state = at_state->next)
+ 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 **p_at_state)
+{
+ int retval;
+ struct at_state_t *at_state = *p_at_state;
+
+ retval = gigaset_isdn_icall(at_state);
+ switch (retval) {
+ case ICALL_ACCEPT:
+ break;
+ default:
+ err("internal error: disposition=%d", 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;
+ atomic_set(&cs->commands_pending, 1);
+ break;
+ }
+}
+
+static int do_lock(struct cardstate *cs)
+{
+ int mode;
+ int i;
+
+ switch (atomic_read(&cs->mstate)) {
+ case MS_UNINITIALIZED:
+ case MS_READY:
+ if (cs->cur_at_seq || cs->at_state.next ||
+ 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))
+ return -EBUSY;
+
+ break;
+ case MS_LOCKED:
+ //retval = -EACCES;
+ break;
+ default:
+ return -EBUSY;
+ }
+
+ mode = atomic_read(&cs->mode);
+ atomic_set(&cs->mstate, MS_LOCKED);
+ atomic_set(&cs->mode, M_UNKNOWN);
+ //FIXME reset card state / at states / bcs states
+
+ return mode;
+}
+
+static int do_unlock(struct cardstate *cs)
+{
+ if (atomic_read(&cs->mstate) != MS_LOCKED)
+ return -EINVAL;
+
+ atomic_set(&cs->mstate, MS_UNINITIALIZED);
+ atomic_set(&cs->mode, M_UNKNOWN);
+ gigaset_free_channels(cs);
+ //FIXME reset card state / at states / bcs states
+ if (atomic_read(&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 at_state_t *at_state2;
+ 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:
+ //FIXME setup everything
+ cs->at_state.pending_commands &= ~PC_INIT;
+ cs->cur_at_seq = SEQ_NONE;
+ atomic_set(&cs->mode, M_UNIMODEM);
+ if (!atomic_read(&cs->cidmode)) {
+ gigaset_free_channels(cs);
+ atomic_set(&cs->mstate, MS_READY);
+ break;
+ }
+ cs->at_state.pending_commands |= PC_CIDMODE;
+ atomic_set(&cs->commands_pending, 1); //FIXME
+ dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
+ break;
+ case ACT_FAILINIT:
+ warn("Could not initialize the device.");
+ 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 (atomic_read(&cs->mstate) == MS_INIT ||
+ atomic_read(&cs->mstate) == MS_RECOVER) {
+ gigaset_free_channels(cs);
+ atomic_set(&cs->mstate, MS_READY);
+ }
+ atomic_set(&cs->mode, M_CID);
+ cs->cur_at_seq = SEQ_NONE;
+ break;
+ case ACT_UMODESET:
+ atomic_set(&cs->mode, M_UNIMODEM);
+ cs->cur_at_seq = SEQ_NONE;
+ break;
+ case ACT_FAILCMODE:
+ cs->cur_at_seq = SEQ_NONE;
+ if (atomic_read(&cs->mstate) == MS_INIT ||
+ atomic_read(&cs->mstate) == MS_RECOVER) {
+ init_failed(cs, M_UNKNOWN);
+ break;
+ }
+ if (!reinit_and_retry(cs, -1))
+ 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) */
+ cs->ops->write_cmd(cs, "+++", 3, NULL);
+ break;
+ case ACT_RING:
+ /* get fresh AT state structure for new CID */
+ at_state2 = get_free_channel(cs, ev->parameter);
+ if (!at_state2) {
+ warn("RING ignored: "
+ "could not allocate channel structure");
+ break;
+ }
+
+ /* initialize AT state structure
+ * note that bcs may be NULL if no B channel is free
+ */
+ at_state2->ConState = 700;
+ kfree(at_state2->str_var[STR_NMBR]);
+ at_state2->str_var[STR_NMBR] = NULL;
+ kfree(at_state2->str_var[STR_ZCPN]);
+ at_state2->str_var[STR_ZCPN] = NULL;
+ kfree(at_state2->str_var[STR_ZBC]);
+ at_state2->str_var[STR_ZBC] = NULL;
+ kfree(at_state2->str_var[STR_ZHLC]);
+ at_state2->str_var[STR_ZHLC] = NULL;
+ at_state2->int_var[VAR_ZCTP] = -1;
+
+ spin_lock_irqsave(&cs->lock, flags);
+ at_state2->timer_expires = RING_TIMEOUT;
+ at_state2->timer_active = 1;
+ spin_unlock_irqrestore(&cs->lock, flags);
+ break;
+ case ACT_ICALL:
+ handle_icall(cs, bcs, p_at_state);
+ at_state = *p_at_state;
+ break;
+ case ACT_FAILSDOWN:
+ warn("Could not shut down the device.");
+ /* 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;
+ atomic_set(&cs->commands_pending, 1);
+ break;
+ }
+ bcs->chstate |= CHS_D_UP;
+ gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
+ 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_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
+ 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 && 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;
+ atomic_set(&cs->commands_pending, 1);
+ } else {
+ disconnect(p_at_state);
+ at_state = *p_at_state;
+ }
+ 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;
+ at_state2 = &cs->bcs[cs->curchannel].at_state;
+ disconnect(&at_state2);
+ break;
+ case ACT_ABORTHUP:
+ cs->cur_at_seq = SEQ_NONE;
+ warn("Could not hang up.");
+ at_state->cid = -1;
+ if (bcs && cs->onechannel)
+ at_state->pending_commands |= PC_DLE0;
+ else {
+ disconnect(p_at_state);
+ at_state = *p_at_state;
+ }
+ schedule_init(cs, MS_RECOVER);
+ break;
+ case ACT_FAILDLE0:
+ cs->cur_at_seq = SEQ_NONE;
+ warn("Could not leave DLE mode.");
+ at_state2 = &cs->bcs[cs->curchannel].at_state;
+ disconnect(&at_state2);
+ schedule_init(cs, MS_RECOVER);
+ break;
+ case ACT_FAILDLE1:
+ cs->cur_at_seq = SEQ_NONE;
+ warn("Could not enter DLE mode. Try to hang up.");
+ channel = cs->curchannel;
+ cs->bcs[channel].at_state.pending_commands |= PC_HUP;
+ atomic_set(&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;
+ atomic_set(&cs->commands_pending, 1);
+ break;
+ }
+ /* fall through */
+ case ACT_FAILCID:
+ cs->cur_at_seq = SEQ_NONE;
+ channel = cs->curchannel;
+ if (!reinit_and_retry(cs, channel)) {
+ warn("Could not get a call id. Dialing not possible");
+ at_state2 = &cs->bcs[channel].at_state;
+ disconnect(&at_state2);
+ }
+ break;
+ case ACT_ABORTCID:
+ cs->cur_at_seq = SEQ_NONE;
+ at_state2 = &cs->bcs[cs->curchannel].at_state;
+ disconnect(&at_state2);
+ break;
+
+ case ACT_DIALING:
+ case ACT_ACCEPTED:
+ cs->cur_at_seq = SEQ_NONE;
+ break;
+
+ case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL processing */
+ disconnect(p_at_state);
+ at_state = *p_at_state;
+ break;
+
+ case ACT_ABORTDIAL: /* error/timeout during dial preparation */
+ cs->cur_at_seq = SEQ_NONE;
+ at_state->pending_commands |= PC_HUP;
+ atomic_set(&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;
+ atomic_set(&cs->commands_pending, 1);
+ break;
+ case ACT_GETSTRING: /* warning: RING, ZDLE, ... are not handled properly any more */
+ 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")) {
+ *p_genresp = 1;
+ *p_resp_code = RSP_ERROR;
+ 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;
+ }
+ /*at_state->getstring = 1;*/
+ cs->gotfwver = 0;
+ break;
+ case ACT_GOTVER:
+ if (cs->gotfwver == 0) {
+ cs->gotfwver = 1;
+ dbg(DEBUG_ANY,
+ "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;
+ err("could not read firmware version.");
+ break;
+#ifdef CONFIG_GIGASET_DEBUG
+ case ACT_ERROR:
+ *p_genresp = 1;
+ *p_resp_code = RSP_ERROR;
+ break;
+ case ACT_TEST:
+ {
+ static int count = 3; //2; //1;
+ *p_genresp = 1;
+ *p_resp_code = count ? RSP_ERROR : RSP_OK;
+ if (count > 0)
+ --count;
+ }
+ break;
+#endif
+ case ACT_DEBUG:
+ dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d",
+ __func__, ev->type, at_state->ConState);
+ break;
+ case ACT_WARN:
+ warn("%s: resp_code %d in ConState %d!",
+ __func__, ev->type, at_state->ConState);
+ break;
+ case ACT_ZCAU:
+ warn("cause code %04x in connection state %d.",
+ ev->parameter, at_state->ConState);
+ break;
+
+ /* events from the LL */
+ case ACT_DIAL:
+ start_dial(at_state, ev->ptr, ev->parameter);
+ break;
+ case ACT_ACCEPT:
+ start_accept(at_state);
+ break;
+ case ACT_PROTO_L2:
+ dbg(DEBUG_CMD,
+ "set protocol to %u", (unsigned) ev->parameter);
+ at_state->bcs->proto2 = ev->parameter;
+ break;
+ case ACT_HUP:
+ at_state->pending_commands |= PC_HUP;
+ atomic_set(&cs->commands_pending, 1); //FIXME
+ dbg(DEBUG_CMD, "Scheduling PC_HUP");
+ break;
+
+ /* hotplug events */
+ case ACT_STOP:
+ do_stop(cs);
+ break;
+ case ACT_START:
+ do_start(cs);
+ break;
+
+ /* events from the interface */ // FIXME without ACT_xxxx?
+ 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 */ // FIXME without ACT_xxxx?
+ case ACT_PROC_CIDMODE:
+ if (ev->parameter != atomic_read(&cs->cidmode)) {
+ atomic_set(&cs->cidmode, ev->parameter);
+ if (ev->parameter) {
+ cs->at_state.pending_commands |= PC_CIDMODE;
+ dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
+ } else {
+ cs->at_state.pending_commands |= PC_UMMODE;
+ dbg(DEBUG_CMD, "Scheduling PC_UMMODE");
+ }
+ atomic_set(&cs->commands_pending, 1);
+ }
+ 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
+ err("%s: action==%d!", __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;
+ int sendcid;
+ struct at_state_t *at_state;
+ int index;
+ int curact;
+ unsigned long flags;
+
+ IFNULLRET(cs);
+ IFNULLRET(ev);
+
+ if (ev->cid >= 0) {
+ at_state = at_state_from_cid(cs, ev->cid);
+ if (!at_state) {
+ 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)) {
+ dbg(DEBUG_ANY,
+ "event for invalid at_state %p", at_state);
+ return;
+ }
+ }
+
+ dbg(DEBUG_CMD,
+ "connection state %d, event %d", at_state->ConState, ev->type);
+
+ bcs = at_state->bcs;
+ sendcid = at_state->cid;
+
+ /* Setting the pointer to the dial array */
+ rep = at_state->replystruct;
+ IFNULLRET(rep);
+
+ if (ev->type == EV_TIMEOUT) {
+ if (ev->parameter != atomic_read(&at_state->timer_index)
+ || !at_state->timer_active) {
+ ev->type = RSP_NONE; /* old timeout */
+ dbg(DEBUG_ANY, "old timeout");
+ } else if (!at_state->waiting)
+ warn("timeout occured");
+ else
+ dbg(DEBUG_ANY, "stopped waiting");
+ }
+
+ /* 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;
+ /* dbg (DEBUG_ANY, "rcode %d", rcode); */
+ if (rcode == RSP_LAST) {
+ /* found nothing...*/
+ warn("%s: rcode=RSP_LAST: resp_code %d in ConState %d!",
+ __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)
+ break; /* may be freed after disconnect */
+ }
+
+ if (at_state) {
+ /* 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; //FIXME
+ at_state->timer_active = 0; //FIXME
+ 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/*rep->command*/) {
+ if (atomic_read(&cs->connected))
+ send_command(cs, p_command,
+ sendcid, cs->dle,
+ GFP_ATOMIC);
+ 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;
+ new_index(&at_state->timer_index,
+ MAX_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;
+
+ IFNULLRET(cs);
+
+ atomic_set(&cs->commands_pending, 0);
+
+ if (cs->cur_at_seq) {
+ dbg(DEBUG_CMD, "not searching scheduled commands: busy");
+ return;
+ }
+
+ dbg(DEBUG_CMD, "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 (atomic_read(&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 */
+ if (cs->at_state.pending_commands == PC_UMMODE
+ && !atomic_read(&cs->cidmode)
+ && !cs->at_state.next
+ && atomic_read(&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;
+ }
+ }
+ }
+ 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) {
+ 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;
+ }
+ }
+
+ for (at_state = cs->at_state.next; at_state; at_state = at_state->next)
+ 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; //FIXME
+ cs->inbuf->inputstate = INS_command;
+ //FIXME reset card state (or -> LOCK0)?
+ 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 (atomic_read(&cs->mode) == M_UNIMODEM) {
+#if 0
+ cs->retry_count = 2;
+#else
+ cs->retry_count = 1;
+#endif
+ 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 (atomic_read(&cs->mode)) {
+ case M_UNIMODEM:
+ cs->at_state.pending_commands |= PC_CIDMODE;
+ dbg(DEBUG_CMD, "Scheduling PC_CIDMODE");
+ atomic_set(&cs->commands_pending, 1);
+ return;
+#ifdef GIG_MAYINITONDIAL
+ case M_UNKNOWN:
+ schedule_init(cs, MS_INIT);
+ return;
+#endif
+ }
+ bcs->at_state.pending_commands &= ~PC_CID;
+ cs->curchannel = bcs->channel;
+#ifdef GIG_RETRYCID
+ cs->retry_count = 2;
+#else
+ cs->retry_count = 1;
+#endif
+ 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;
+
+ /* no locking needed (only one reader) */
+ head = atomic_read(&cs->ev_head);
+
+ for (i = 0; i < 2 * MAX_EVENTS; ++i) {
+ tail = atomic_read(&cs->ev_tail);
+ if (tail == head) {
+ if (!check_flags && !atomic_read(&cs->commands_pending))
+ break;
+ check_flags = 0;
+ process_command_flags(cs);
+ tail = atomic_read(&cs->ev_tail);
+ if (tail == head) {
+ if (!atomic_read(&cs->commands_pending))
+ break;
+ continue;
+ }
+ }
+
+ ev = cs->events + head;
+ was_busy = cs->cur_at_seq != SEQ_NONE;
+ process_event(cs, ev);
+ kfree(ev->ptr);
+ ev->ptr = NULL;
+ if (was_busy && cs->cur_at_seq == SEQ_NONE)
+ check_flags = 1;
+
+ head = (head + 1) % MAX_EVENTS;
+ atomic_set(&cs->ev_head, head);
+ }
+
+ if (i == 2 * MAX_EVENTS) {
+ err("infinite loop in process_events; aborting.");
+ }
+}
+
+/* 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;
+
+ IFNULLRET(cs);
+ IFNULLRET(cs->inbuf);
+
+ /* handle incoming data on control/common channel */
+ if (atomic_read(&cs->inbuf->head) != atomic_read(&cs->inbuf->tail)) {
+ dbg(DEBUG_INTR, "processing new data");
+ cs->ops->handle_input(cs->inbuf);
+ }
+
+ process_events(cs);
+}
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