Import of Linux/MIPS 2.1.14

1 files changed, 635 insertions, 0 deletions

diff --git a/include/linux/isdn.h b/include/linux/isdn.h
new file mode 100644
index 000000000..1408407d9
--- /dev/null
+++ b/include/linux/isdn.h
@@ -0,0 +1,635 @@
+/* $Id: isdn.h,v 1.16 1996/08/12 16:20:56 hipp Exp $
+ *
+ * Main header for the Linux ISDN subsystem (linklevel).
+ *
+ * Copyright 1994,95,96 by Fritz Elfert (fritz@wuemaus.franken.de)
+ * Copyright 1995,96    by Thinking Objects Software GmbH Wuerzburg
+ * Copyright 1995,96    by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
+ * 
+ * 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, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
+ *
+ * $Log: isdn.h,v $
+ * Revision 1.16  1996/08/12 16:20:56  hipp
+ * renamed ppp_minor to ppp_slot
+ *
+ * Revision 1.15  1996/06/15 14:56:57  fritz
+ * Added version signatures for data structures used
+ * by userlevel programs.
+ *
+ * Revision 1.14  1996/06/06 21:24:23  fritz
+ * Started adding support for suspend/resume.
+ *
+ * Revision 1.13  1996/06/05 02:18:20  fritz
+ * Added DTMF decoding stuff.
+ *
+ * Revision 1.12  1996/06/03 19:55:08  fritz
+ * Fixed typos.
+ *
+ * Revision 1.11  1996/05/31 01:37:47  fritz
+ * Minor changes, due to changes in isdn_tty.c
+ *
+ * Revision 1.10  1996/05/18 01:37:18  fritz
+ * Added spelling corrections and some minor changes
+ * to stay in sync with kernel.
+ *
+ * Revision 1.9  1996/05/17 03:58:20  fritz
+ * Added flags for DLE handling.
+ *
+ * Revision 1.8  1996/05/11 21:49:55  fritz
+ * Removed queue management variables.
+ * Changed queue management to use sk_buffs.
+ *
+ * Revision 1.7  1996/05/07 09:10:06  fritz
+ * Reorganized tty-related structs.
+ *
+ * Revision 1.6  1996/05/06 11:38:27  hipp
+ * minor change in ippp struct
+ *
+ * Revision 1.5  1996/04/30 11:03:16  fritz
+ * Added Michael's ippp-bind patch.
+ *
+ * Revision 1.4  1996/04/29 23:00:02  fritz
+ * Added variables for voice-support.
+ *
+ * Revision 1.3  1996/04/20 16:54:58  fritz
+ * Increased maximum number of channels.
+ * Added some flags for isdn_net to handle callback more reliable.
+ * Fixed delay-definitions to be more accurate.
+ * Misc. typos
+ *
+ * Revision 1.2  1996/02/11 02:10:02  fritz
+ * Changed IOCTL-names
+ * Added rx_netdev, st_netdev, first_skb, org_hcb, and org_hcu to
+ * Netdevice-local struct.
+ *
+ * Revision 1.1  1996/01/10 20:55:07  fritz
+ * Initial revision
+ *
+ */
+
+#ifndef isdn_h
+#define isdn_h
+
+#include <linux/ioctl.h>
+
+#define ISDN_TTY_MAJOR    43
+#define ISDN_TTYAUX_MAJOR 44
+#define ISDN_MAJOR        45
+
+/* The minor-devicenumbers for Channel 0 and 1 are used as arguments for
+ * physical Channel-Mapping, so they MUST NOT be changed without changing
+ * the correspondent code in isdn.c
+ */
+
+#define ISDN_MAX_DRIVERS    32
+#define ISDN_MAX_CHANNELS   64
+#define ISDN_MINOR_B        0
+#define ISDN_MINOR_BMAX     (ISDN_MAX_CHANNELS-1)
+#define ISDN_MINOR_CTRL     ISDN_MAX_CHANNELS
+#define ISDN_MINOR_CTRLMAX  (2*ISDN_MAX_CHANNELS-1)
+#define ISDN_MINOR_PPP      (2*ISDN_MAX_CHANNELS)
+#define ISDN_MINOR_PPPMAX   (3*ISDN_MAX_CHANNELS-1)
+#define ISDN_MINOR_STATUS   255
+
+/* New ioctl-codes */
+#define IIOCNETAIF  _IO('I',1)
+#define IIOCNETDIF  _IO('I',2)
+#define IIOCNETSCF  _IO('I',3)
+#define IIOCNETGCF  _IO('I',4)
+#define IIOCNETANM  _IO('I',5)
+#define IIOCNETDNM  _IO('I',6)
+#define IIOCNETGNM  _IO('I',7)
+#define IIOCGETSET  _IO('I',8)
+#define IIOCSETSET  _IO('I',9)
+#define IIOCSETVER  _IO('I',10)
+#define IIOCNETHUP  _IO('I',11)
+#define IIOCSETGST  _IO('I',12)
+#define IIOCSETBRJ  _IO('I',13)
+#define IIOCSIGPRF  _IO('I',14)
+#define IIOCGETPRF  _IO('I',15)
+#define IIOCSETPRF  _IO('I',16)
+#define IIOCGETMAP  _IO('I',17)
+#define IIOCSETMAP  _IO('I',18)
+#define IIOCNETASL  _IO('I',19)
+#define IIOCNETDIL  _IO('I',20)
+#define IIOCGETCPS  _IO('I',21)
+#define IIOCGETDVR  _IO('I',22)
+
+#define IIOCNETALN  _IO('I',32)
+#define IIOCNETDLN  _IO('I',33)
+
+#define IIOCDBGVAR  _IO('I',127)
+
+#define IIOCDRVCTL  _IO('I',128)
+
+/* Packet encapsulations for net-interfaces */
+#define ISDN_NET_ENCAP_ETHER     0
+#define ISDN_NET_ENCAP_RAWIP     1
+#define ISDN_NET_ENCAP_IPTYP     2
+#define ISDN_NET_ENCAP_CISCOHDLC 3
+#define ISDN_NET_ENCAP_SYNCPPP   4
+#define ISDN_NET_ENCAP_UIHDLC    5
+
+/* Facility which currently uses an ISDN-channel */
+#define ISDN_USAGE_NONE       0
+#define ISDN_USAGE_RAW        1
+#define ISDN_USAGE_MODEM      2
+#define ISDN_USAGE_NET        3
+#define ISDN_USAGE_VOICE      4
+#define ISDN_USAGE_FAX        5
+#define ISDN_USAGE_MASK       7 /* Mask to get plain usage */
+#define ISDN_USAGE_EXCLUSIVE 64 /* This bit is set, if channel is exclusive */
+#define ISDN_USAGE_OUTGOING 128 /* This bit is set, if channel is outgoing  */
+
+#define ISDN_MODEM_ANZREG    21        /* Number of Modem-Registers        */
+#define ISDN_MSNLEN          20
+
+typedef struct {
+  char drvid[25];
+  unsigned long arg;
+} isdn_ioctl_struct;
+
+typedef struct {
+  unsigned long isdndev;
+  unsigned long atmodem[ISDN_MAX_CHANNELS];
+  unsigned long info[ISDN_MAX_CHANNELS];
+} debugvar_addr;
+
+typedef struct {
+  char name[10];
+  char phone[20];
+  int  outgoing;
+} isdn_net_ioctl_phone;
+
+#define NET_DV 0x01 /* Data version for net_cfg     */
+#define TTY_DV 0x01 /* Data version for iprofd etc. */
+
+typedef struct {
+  char name[10];     /* Name of interface                     */
+  char master[10];   /* Name of Master for Bundling           */
+  char slave[10];    /* Name of Slave for Bundling            */
+  char eaz[256];     /* EAZ/MSN                               */
+  char drvid[25];    /* DriverId for Bindings                 */
+  int  onhtime;      /* Hangup-Timeout                        */
+  int  charge;       /* Charge-Units                          */
+  int  l2_proto;     /* Layer-2 protocol                      */
+  int  l3_proto;     /* Layer-3 protocol                      */
+  int  p_encap;      /* Encapsulation                         */
+  int  exclusive;    /* Channel, if bound exclusive           */
+  int  dialmax;      /* Dial Retry-Counter                    */
+  int  slavedelay;   /* Delay until slave starts up           */
+  int  cbdelay;      /* Delay before Callback                 */
+  int  chargehup;    /* Flag: Charge-Hangup                   */
+  int  ihup;         /* Flag: Hangup-Timeout on incoming line */
+  int  secure;       /* Flag: Secure                          */
+  int  callback;     /* Flag: Callback                        */
+  int  cbhup;        /* Flag: Reject Call before Callback     */
+  int  pppbind;      /* ippp device for bindings              */
+} isdn_net_ioctl_cfg;
+
+#ifdef __KERNEL__
+
+#ifndef STANDALONE
+#include <linux/config.h>
+#endif
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <asm/segment.h>
+#include <asm/io.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/malloc.h>
+#include <linux/mm.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_reg.h>
+#include <linux/fcntl.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/tcp.h>
+
+#ifdef CONFIG_ISDN_PPP
+
+#ifdef CONFIG_ISDN_PPP_VJ
+#  include <net/slhc_vj.h>
+#endif
+
+#include <linux/ppp_defs.h>
+#include <linux/if_ppp.h>
+#include <linux/if_pppvar.h>
+
+#include <linux/isdn_ppp.h>
+#endif
+
+#include <linux/isdnif.h>
+
+#define ISDN_DRVIOCTL_MASK       0x7f  /* Mask for Device-ioctl */
+
+/* Until now unused */
+#define ISDN_SERVICE_VOICE 1
+#define ISDN_SERVICE_AB    1<<1 
+#define ISDN_SERVICE_X21   1<<2
+#define ISDN_SERVICE_G4    1<<3
+#define ISDN_SERVICE_BTX   1<<4
+#define ISDN_SERVICE_DFUE  1<<5
+#define ISDN_SERVICE_X25   1<<6
+#define ISDN_SERVICE_TTX   1<<7
+#define ISDN_SERVICE_MIXED 1<<8
+#define ISDN_SERVICE_FW    1<<9
+#define ISDN_SERVICE_GTEL  1<<10
+#define ISDN_SERVICE_BTXN  1<<11
+#define ISDN_SERVICE_BTEL  1<<12
+
+/* Macros checking plain usage */
+#define USG_NONE(x)         ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE)
+#define USG_RAW(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW)
+#define USG_MODEM(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM)
+#define USG_VOICE(x)        ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)
+#define USG_NET(x)          ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET)
+#define USG_OUTGOING(x)     ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING)
+#define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \
+                             ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE)     )
+
+/* Timer-delays and scheduling-flags */
+#define ISDN_TIMER_RES       3                     /* Main Timer-Resolution  */
+#define ISDN_TIMER_02SEC     (HZ/(ISDN_TIMER_RES+1)/5) /* Slow-Timer1 .2 sec */
+#define ISDN_TIMER_1SEC      (HZ/(ISDN_TIMER_RES+1)) /* Slow-Timer2 1 sec   */
+#define ISDN_TIMER_MODEMREAD 1
+#define ISDN_TIMER_MODEMPLUS 2
+#define ISDN_TIMER_MODEMRING 4
+#define ISDN_TIMER_MODEMXMIT 8
+#define ISDN_TIMER_NETDIAL   16
+#define ISDN_TIMER_NETHANGUP 32
+#define ISDN_TIMER_IPPP      64
+#define ISDN_TIMER_FAST      (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \
+                              ISDN_TIMER_MODEMXMIT)
+#define ISDN_TIMER_SLOW      (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \
+                              ISDN_TIMER_NETDIAL)
+
+/* Timeout-Values for isdn_net_dial() */
+#define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
+#define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1)))
+
+/* GLOBAL_FLAGS */
+#define ISDN_GLOBAL_STOPPED 1
+
+/*=================== Start of ip-over-ISDN stuff =========================*/
+
+/* Feature- and status-flags for a net-interface */
+#define ISDN_NET_CONNECTED  0x01       /* Bound to ISDN-Channel             */
+#define ISDN_NET_SECURE     0x02       /* Accept calls from phonelist only  */
+#define ISDN_NET_CALLBACK   0x04       /* activate callback                 */
+#define ISDN_NET_CBHUP      0x08       /* hangup before callback            */
+#define ISDN_NET_CBOUT      0x10       /* remote machine does callback      */
+#if 0
+/* Unused??? */
+#define ISDN_NET_CLONE      0x08       /* clone a tmp interface when called */
+#define ISDN_NET_TMP        0x10       /* tmp interface until getting an IP */
+#define ISDN_NET_DYNAMIC    0x20       /* this link is dynamically allocated */
+#endif
+#define ISDN_NET_MAGIC      0x49344C02 /* for paranoia-checking             */
+
+/* Phone-list-element */
+typedef struct {
+  void *next;
+  char num[20];
+} isdn_net_phone;
+
+/* Local interface-data */
+typedef struct isdn_net_local_s {
+  ulong                  magic;
+  char                   name[10];     /* Name of device                   */
+  struct enet_statistics stats;        /* Ethernet Statistics              */
+  int                    isdn_device;  /* Index to isdn-device             */
+  int                    isdn_channel; /* Index to isdn-channel            */
+  int			 ppp_slot;     /* PPPD device slot number          */
+  int                    pre_device;   /* Preselected isdn-device          */
+  int                    pre_channel;  /* Preselected isdn-channel         */
+  int                    exclusive;    /* If non-zero idx to reserved chan.*/
+  int                    flags;        /* Connection-flags                 */
+  int                    dialretry;    /* Counter for Dialout-retries      */
+  int                    dialmax;      /* Max. Number of Dial-retries      */
+  int                    cbdelay;      /* Delay before Callback starts     */
+  int                    dtimer;       /* Timeout-counter for dialing      */
+  char                   msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */
+  u_char                 cbhup;        /* Flag: Reject Call before Callback*/
+  u_char                 dialstate;    /* State for dialing                */
+  u_char                 p_encap;      /* Packet encapsulation             */
+                                       /*   0 = Ethernet over ISDN         */
+				       /*   1 = RAW-IP                     */
+                                       /*   2 = IP with type field         */
+  u_char                 l2_proto;     /* Layer-2-protocol                 */
+				       /* See ISDN_PROTO_L2..-constants in */
+                                       /* isdnif.h                         */
+                                       /*   0 = X75/LAPB with I-Frames     */
+				       /*   1 = X75/LAPB with UI-Frames    */
+				       /*   2 = X75/LAPB with BUI-Frames   */
+				       /*   3 = HDLC                       */
+  u_char                 l3_proto;     /* Layer-3-protocol                 */
+				       /* See ISDN_PROTO_L3..-constants in */
+                                       /* isdnif.h                         */
+                                       /*   0 = Transparent                */
+  int                    huptimer;     /* Timeout-counter for auto-hangup  */
+  int                    charge;       /* Counter for charging units       */
+  int                    chargetime;   /* Timer for Charging info          */
+  int                    hupflags;     /* Flags for charge-unit-hangup:    */
+				       /* bit0: chargeint is invalid       */
+				       /* bit1: Getting charge-interval    */
+                                       /* bit2: Do charge-unit-hangup      */
+  int                    outgoing;     /* Flag: outgoing call              */
+  int                    onhtime;      /* Time to keep link up             */
+  int                    chargeint;    /* Interval between charge-infos    */
+  int                    onum;         /* Flag: at least 1 outgoing number */
+  int                    cps;          /* current speed of this interface  */
+  int                    transcount;   /* byte-counter for cps-calculation */
+  int                    sqfull;       /* Flag: netdev-queue overloaded    */
+  ulong                  sqfull_stamp; /* Start-Time of overload           */
+  ulong                  slavedelay;   /* Dynamic bundling delaytime       */
+  struct device          *srobin;      /* Ptr to Master device for slaves  */
+  isdn_net_phone         *phone[2];    /* List of remote-phonenumbers      */
+				       /* phone[0] = Incoming Numbers      */
+				       /* phone[1] = Outgoing Numbers      */
+  isdn_net_phone         *dial;        /* Pointer to dialed number         */
+  struct device          *master;      /* Ptr to Master device for slaves  */
+  struct device          *slave;       /* Ptr to Slave device for masters  */
+  struct isdn_net_local_s *next;       /* Ptr to next link in bundle       */
+  struct isdn_net_local_s *last;       /* Ptr to last link in bundle       */
+  struct isdn_net_dev_s  *netdev;      /* Ptr to netdev                    */
+  struct sk_buff         *first_skb;   /* Ptr to skb that triggers dialing */
+  struct sk_buff         *sav_skb;     /* Ptr to skb, rejected by LL-driver*/
+                                       /* Ptr to orig. header_cache_bind   */
+  void                   (*org_hcb)(struct hh_cache **, struct device *,
+                                    unsigned short, __u32);
+                                       /* Ptr to orig. header_cache_update */
+  void                   (*org_hcu)(struct hh_cache *, struct device *,
+                                    unsigned char *);
+  int  pppbind;                        /* ippp device for bindings         */
+} isdn_net_local;
+
+#ifdef CONFIG_ISDN_PPP
+struct ippp_bundle {
+  int mp_mrru;                        /* unused                             */
+  struct mpqueue *last;               /* currently defined in isdn_net_dev  */
+  int min;                            /* currently calculated 'on the fly'  */
+  long next_num;                      /* we wanna see this seq.-number next */
+  struct sqqueue *sq;
+  int modify:1;                       /* set to 1 while modifying sqqueue   */
+  int bundled:1;                      /* bundle active ?                    */
+};
+#endif
+
+/* the interface itself */
+typedef struct isdn_net_dev_s {
+  isdn_net_local  local;
+  isdn_net_local *queue;
+  void           *next;                /* Pointer to next isdn-interface   */
+  struct device   dev;	               /* interface to upper levels        */
+#ifdef CONFIG_ISDN_PPP
+  struct mpqueue *mp_last; 
+  struct ippp_bundle ib;
+#endif
+} isdn_net_dev;
+
+/*===================== End of ip-over-ISDN stuff ===========================*/
+
+/*======================= Start of ISDN-tty stuff ===========================*/
+
+#define ISDN_ASYNC_MAGIC          0x49344C01 /* for paranoia-checking        */
+#define ISDN_ASYNC_INITIALIZED	  0x80000000 /* port was initialized         */
+#define ISDN_ASYNC_CALLOUT_ACTIVE 0x40000000 /* Call out device active       */
+#define ISDN_ASYNC_NORMAL_ACTIVE  0x20000000 /* Normal device active         */
+#define ISDN_ASYNC_CLOSING	  0x08000000 /* Serial port is closing       */
+#define ISDN_ASYNC_CTS_FLOW	  0x04000000 /* Do CTS flow control          */
+#define ISDN_ASYNC_CHECK_CD	  0x02000000 /* i.e., CLOCAL                 */
+#define ISDN_ASYNC_HUP_NOTIFY         0x0001 /* Notify tty on hangups/closes */
+#define ISDN_ASYNC_SESSION_LOCKOUT    0x0100 /* Lock cua opens on session    */
+#define ISDN_ASYNC_PGRP_LOCKOUT       0x0200 /* Lock cua opens on pgrp       */
+#define ISDN_ASYNC_CALLOUT_NOHUP      0x0400 /* No hangup for cui            */
+#define ISDN_ASYNC_SPLIT_TERMIOS      0x0008 /* Sep. termios for dialin/out  */
+#define ISDN_SERIAL_XMIT_SIZE           4000 /* Maximum bufsize for write    */
+#define ISDN_SERIAL_TYPE_NORMAL            1
+#define ISDN_SERIAL_TYPE_CALLOUT           2
+
+/* Private data of AT-command-interpreter */
+typedef struct atemu {
+  u_char              profile[ISDN_MODEM_ANZREG]; /* Modem-Regs. Profile 0 */
+  u_char              mdmreg[ISDN_MODEM_ANZREG];  /* Modem-Registers       */
+  char                pmsn[ISDN_MSNLEN]; /* EAZ/MSNs Profile 0             */
+  char                msn[ISDN_MSNLEN];/* EAZ/MSN                          */
+  u_char              vpar[10];        /* Voice-parameters                 */
+  int                 mdmcmdl;         /* Length of Modem-Commandbuffer    */
+  int                 pluscount;       /* Counter for +++ sequence         */
+  int                 lastplus;        /* Timestamp of last +              */
+  int                 lastDLE;         /* Flag for voice-coding: DLE seen  */
+  char                mdmcmd[255];     /* Modem-Commandbuffer              */
+} atemu;
+
+/* Private data (similar to async_struct in <linux/serial.h>) */
+typedef struct modem_info {
+  int			magic;
+  int			flags;		 /* defined in tty.h               */
+  int			x_char;		 /* xon/xoff character             */
+  int			mcr;		 /* Modem control register         */
+  int                   msr;             /* Modem status register          */
+  int                   lsr;             /* Line status register           */
+  int			line;
+  int			count;		 /* # of fd on device              */
+  int			blocked_open;	 /* # of blocked opens             */
+  long			session;	 /* Session of opening process     */
+  long			pgrp;		 /* pgrp of opening process        */
+  int                   online;          /* B-Channel is up                */
+  int                   vonline;         /* Voice-channel status           */
+  int                   dialing;         /* Dial in progress               */
+  int                   rcvsched;        /* Receive needs schedule         */
+  int                   isdn_driver;	 /* Index to isdn-driver           */
+  int                   isdn_channel;    /* Index to isdn-channel          */
+  int                   drv_index;       /* Index to dev->usage            */
+  int                   ncarrier;        /* Flag: schedule NO CARRIER      */
+  struct timer_list     nc_timer;        /* Timer for delayed NO CARRIER   */
+  int                   send_outstanding;/* # of outstanding send-requests */
+  int                   xmit_size;       /* max. # of chars in xmit_buf    */
+  int                   xmit_count;      /* # of chars in xmit_buf         */
+  unsigned char         *xmit_buf;       /* transmit buffer                */
+  struct sk_buff_head   xmit_queue;      /* transmit queue                 */
+  struct sk_buff_head   dtmf_queue;      /* queue for dtmf results         */
+  struct tty_struct 	*tty;            /* Pointer to corresponding tty   */
+  atemu                 emu;             /* AT-emulator data               */
+  void                  *adpcms;         /* state for adpcm decompression  */
+  void                  *adpcmr;         /* state for adpcm compression    */
+  void                  *dtmf_state;     /* state for dtmf decoder         */
+  struct termios	normal_termios;  /* For saving termios structs     */
+  struct termios	callout_termios;
+  struct wait_queue	*open_wait;
+  struct wait_queue	*close_wait;
+} modem_info;
+
+#define ISDN_MODEM_WINSIZE 8
+
+/* Description of one ISDN-tty */
+typedef struct {
+  int                refcount;			   /* Number of opens        */
+  struct tty_driver  tty_modem;			   /* tty-device             */
+  struct tty_driver  cua_modem;			   /* cua-device             */
+  struct tty_struct  *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */
+  struct termios     *modem_termios[ISDN_MAX_CHANNELS];
+  struct termios     *modem_termios_locked[ISDN_MAX_CHANNELS];
+  modem_info         info[ISDN_MAX_CHANNELS];	   /* Private data           */
+} modem;
+
+/*======================= End of ISDN-tty stuff ============================*/
+
+/*======================= Start of sync-ppp stuff ==========================*/
+
+
+#define NUM_RCV_BUFFS     64
+#define PPP_HARD_HDR_LEN 4
+
+#define IPPP_OPEN        0x1
+#define IPPP_CONNECT     0x2
+#define IPPP_CLOSEWAIT   0x4
+#define IPPP_NOBLOCK     0x8
+
+#ifdef CONFIG_ISDN_PPP
+
+struct sqqueue {
+  struct sqqueue *next;
+  int sqno_start;
+  int sqno_end;
+  struct sk_buff *skb;
+  long timer;
+};
+  
+struct mpqueue {
+  struct mpqueue *next;
+  struct mpqueue *last;
+  int    sqno;
+  struct sk_buff *skb;
+  int BEbyte;
+  unsigned long time;
+}; 
+
+struct ippp_buf_queue {
+  struct ippp_buf_queue *next;
+  struct ippp_buf_queue *last;
+  char *buf;                 /* NULL here indicates end of queue */
+  int len;
+};
+
+struct ippp_struct {
+  struct ippp_struct *next_link;
+  int state;
+  struct ippp_buf_queue rq[NUM_RCV_BUFFS]; /* packet queue for isdn_ppp_read() */
+  struct ippp_buf_queue *first;  /* pointer to (current) first packet */
+  struct ippp_buf_queue *last;   /* pointer to (current) last used packet in queue */
+  struct wait_queue *wq;
+  struct wait_queue *wq1;
+  struct task_struct *tk;
+  unsigned int mpppcfg;
+  unsigned int pppcfg;
+  unsigned int mru;
+  unsigned int mpmru;
+  unsigned int mpmtu;
+  unsigned int maxcid;
+  isdn_net_local *lp;
+  int unit; 
+  int minor;
+  long last_link_seqno;
+  long mp_seqno;
+  long range;
+#ifdef CONFIG_ISDN_PPP_VJ
+  unsigned char *cbuf;
+  struct slcompress *slcomp;
+#endif
+  unsigned long debug;
+};
+
+#endif
+
+/*======================== End of sync-ppp stuff ===========================*/
+
+/*======================= Start of general stuff ===========================*/
+
+typedef struct {
+  char *next;
+  char *private;
+} infostruct;
+
+/* Description of hardware-level-driver */
+typedef struct {
+  ulong               flags;            /* Flags                            */
+  int                 channels;         /* Number of channels               */
+  int                 reject_bus;       /* Flag: Reject rejected call on bus*/
+  struct wait_queue  *st_waitq;         /* Wait-Queue for status-read's     */
+  int                 maxbufsize;       /* Maximum Buffersize supported     */
+  unsigned long       pktcount;         /* Until now: unused                */
+  int                 running;          /* Flag: Protocolcode running       */
+  int                 loaded;           /* Flag: Driver loaded              */
+  int                 stavail;          /* Chars avail on Status-device     */
+  isdn_if            *interface;        /* Interface to driver              */
+  int                *rcverr;           /* Error-counters for B-Ch.-receive */
+  int                *rcvcount;         /* Byte-counters for B-Ch.-receive  */
+  unsigned long      DLEflag;           /* Flags: Insert DLE at next read   */
+  struct sk_buff_head *rpqueue;         /* Pointers to start of Rcv-Queue   */
+  struct wait_queue  **rcv_waitq;       /* Wait-Queues for B-Channel-Reads  */
+  struct wait_queue  **snd_waitq;       /* Wait-Queue for B-Channel-Send's  */
+  char               msn2eaz[10][ISDN_MSNLEN];  /* Mapping-Table MSN->EAZ   */
+} driver;
+
+/* Main driver-data */
+typedef struct isdn_devt {
+  unsigned short    flags;		       /* Bitmapped Flags:           */
+				               /*                            */
+  int               drivers;		       /* Current number of drivers  */
+  int               channels;		       /* Current number of channels */
+  int               net_verbose;               /* Verbose-Flag               */
+  int               modempoll;		       /* Flag: tty-read active      */
+  int               tflags;                    /* Timer-Flags:               */
+				               /*  see ISDN_TIMER_..defines  */
+  int               global_flags;
+  infostruct        *infochain;                /* List of open info-devs.    */
+  struct wait_queue *info_waitq;               /* Wait-Queue for isdninfo    */
+  struct timer_list timer;		       /* Misc.-function Timer       */
+  int               chanmap[ISDN_MAX_CHANNELS];/* Map minor->device-channel  */
+  int               drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index    */
+  int               usage[ISDN_MAX_CHANNELS];  /* Used by tty/ip/voice       */
+  char              num[ISDN_MAX_CHANNELS][20];/* Remote number of active ch.*/
+  int               m_idx[ISDN_MAX_CHANNELS];  /* Index for mdm....          */
+  driver            *drv[ISDN_MAX_DRIVERS];    /* Array of drivers           */
+  isdn_net_dev      *netdev;		       /* Linked list of net-if's    */
+  char              drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID                 */
+  struct task_struct *profd;                   /* For iprofd                 */
+  modem             mdm;		       /* tty-driver-data            */
+  isdn_net_dev      *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers     */
+  isdn_net_dev      *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers   */
+  ulong             ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes  */
+  ulong             obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes  */
+} isdn_dev;
+
+extern isdn_dev *dev;
+
+/* Utility-Macros */
+#define MIN(a,b) ((a<b)?a:b)
+#define MAX(a,b) ((a>b)?a:b)
+
+#endif /* __KERNEL__ */
+#endif /* isdn_h */