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Diffstat (limited to 'include/linux/isdn.h')
| -rw-r--r-- | include/linux/isdn.h | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/include/linux/isdn.h b/include/linux/isdn.h new file mode 100644 index 000000000..1e9a0f2a8 --- /dev/null +++ b/include/linux/isdn.h @@ -0,0 +1,472 @@ +/* $Id: isdn.h,v 1.125.2.3 2004/02/10 01:07:14 keil Exp $ + * + * Main header for the Linux ISDN subsystem (linklevel). + * + * Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de) + * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg + * Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de) + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by reference. + * + */ +#ifndef __ISDN_H__ +#define __ISDN_H__ + + +#include <linux/errno.h> +#include <linux/fs.h> +#include <linux/major.h> +#include <asm/io.h> +#include <linux/kernel.h> +#include <linux/signal.h> +#include <linux/slab.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> +#include <linux/mutex.h> +#include <uapi/linux/isdn.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_MINOR_B 0 +#define ISDN_MINOR_BMAX (ISDN_MAX_CHANNELS-1) +#define ISDN_MINOR_CTRL 64 +#define ISDN_MINOR_CTRLMAX (64 + (ISDN_MAX_CHANNELS-1)) +#define ISDN_MINOR_PPP 128 +#define ISDN_MINOR_PPPMAX (128 + (ISDN_MAX_CHANNELS-1)) +#define ISDN_MINOR_STATUS 255 + +#ifdef CONFIG_ISDN_PPP + +#ifdef CONFIG_ISDN_PPP_VJ +# include <net/slhc_vj.h> +#endif + +#include <linux/ppp_defs.h> +#include <linux/ppp-ioctl.h> + +#include <linux/isdn_ppp.h> +#endif + +#ifdef CONFIG_ISDN_X25 +# include <linux/concap.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_FAX(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_FAX) +#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 4 /* Main Timer-Resolution */ +#define ISDN_TIMER_02SEC (HZ/ISDN_TIMER_RES/5) /* Slow-Timer1 .2 sec */ +#define ISDN_TIMER_1SEC (HZ/ISDN_TIMER_RES) /* Slow-Timer2 1 sec */ +#define ISDN_TIMER_RINGING 5 /* tty RINGs = ISDN_TIMER_1SEC * this factor */ +#define ISDN_TIMER_KEEPINT 10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */ +#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_CARRIER 256 /* Wait for Carrier */ +#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 | ISDN_TIMER_CARRIER) + +/* 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))) +#define ISDN_TIMER_DTIMEOUT60 (60*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 */ + +#define ISDN_NET_MAGIC 0x49344C02 /* for paranoia-checking */ + +/* Phone-list-element */ +typedef struct { + void *next; + char num[ISDN_MSNLEN]; +} isdn_net_phone; + +/* + Principles when extending structures for generic encapsulation protocol + ("concap") support: + - Stuff which is hardware specific (here i4l-specific) goes in + the netdev -> local structure (here: isdn_net_local) + - Stuff which is encapsulation protocol specific goes in the structure + which holds the linux device structure (here: isdn_net_device) +*/ + +/* Local interface-data */ +typedef struct isdn_net_local_s { + ulong magic; + struct net_device_stats 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 */ + ulong 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 */ + /* bit3: Do hangup even on incoming */ + 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 */ + int triggercps; /* BogoCPS needed for trigger slave */ + 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 net_device *master; /* Ptr to Master device for slaves */ + struct net_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_head super_tx_queue; /* List of supervisory frames to */ + /* be transmitted asap */ + atomic_t frame_cnt; /* number of frames currently */ + /* queued in HL driver */ + /* Ptr to orig. hard_header_cache */ + spinlock_t xmit_lock; /* used to protect the xmit path of */ + /* a particular channel (including */ + /* the frame_cnt */ + + int pppbind; /* ippp device for bindings */ + int dialtimeout; /* How long shall we try on dialing? (jiffies) */ + int dialwait; /* How long shall we wait after failed attempt? (jiffies) */ + ulong dialstarted; /* jiffies of first dialing-attempt */ + ulong dialwait_timer; /* jiffies of earliest next dialing-attempt */ + int huptimeout; /* How long will the connection be up? (seconds) */ +#ifdef CONFIG_ISDN_X25 + struct concap_device_ops *dops; /* callbacks used by encapsulator */ +#endif + /* use an own struct for that in later versions */ + ulong cisco_myseq; /* Local keepalive seq. for Cisco */ + ulong cisco_mineseen; /* returned keepalive seq. from remote */ + ulong cisco_yourseq; /* Remote keepalive seq. for Cisco */ + int cisco_keepalive_period; /* keepalive period */ + ulong cisco_last_slarp_in; /* jiffie of last keepalive packet we received */ + char cisco_line_state; /* state of line according to keepalive packets */ + char cisco_debserint; /* debugging flag of cisco hdlc with slarp */ + struct timer_list cisco_timer; + struct work_struct tqueue; +} isdn_net_local; + +/* the interface itself */ +typedef struct isdn_net_dev_s { + isdn_net_local *local; + isdn_net_local *queue; /* circular list of all bundled + channels, which are currently + online */ + spinlock_t queue_lock; /* lock to protect queue */ + void *next; /* Pointer to next isdn-interface */ + struct net_device *dev; /* interface to upper levels */ +#ifdef CONFIG_ISDN_PPP + ippp_bundle * pb; /* pointer to the common bundle structure + * with the per-bundle data */ +#endif +#ifdef CONFIG_ISDN_X25 + struct concap_proto *cprot; /* connection oriented encapsulation protocol */ +#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_SERIAL_XMIT_SIZE 1024 /* Default bufsize for write */ +#define ISDN_SERIAL_XMIT_MAX 4000 /* Maximum bufsize for write */ + +#ifdef CONFIG_ISDN_AUDIO +/* For using sk_buffs with audio we need some private variables + * within each sk_buff. For this purpose, we declare a struct here, + * and put it always at the private skb->cb data array. A few macros help + * accessing the variables. + */ +typedef struct _isdn_audio_data { + unsigned short dle_count; + unsigned char lock; +} isdn_audio_data_t; + +#define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_data_t *)&skb->cb[0])->dle_count) +#define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_data_t *)&skb->cb[0])->lock) +#endif + +/* Private data of AT-command-interpreter */ +typedef struct atemu { + u_char profile[ISDN_MODEM_NUMREG]; /* Modem-Regs. Profile 0 */ + u_char mdmreg[ISDN_MODEM_NUMREG]; /* Modem-Registers */ + char pmsn[ISDN_MSNLEN]; /* EAZ/MSNs Profile 0 */ + char msn[ISDN_MSNLEN]; /* EAZ/MSN */ + char plmsn[ISDN_LMSNLEN]; /* Listening MSNs Profile 0 */ + char lmsn[ISDN_LMSNLEN]; /* Listening MSNs */ + char cpn[ISDN_MSNLEN]; /* CalledPartyNumber on incoming call */ + char connmsg[ISDN_CMSGLEN]; /* CONNECT-Msg from HL-Driver */ +#ifdef CONFIG_ISDN_AUDIO + u_char vpar[10]; /* Voice-parameters */ + int lastDLE; /* Flag for voice-coding: DLE seen */ +#endif + int mdmcmdl; /* Length of Modem-Commandbuffer */ + int pluscount; /* Counter for +++ sequence */ + u_long lastplus; /* Timestamp of last + */ + int carrierwait; /* Seconds of carrier waiting */ + char mdmcmd[255]; /* Modem-Commandbuffer */ + unsigned int charge; /* Charge units of current connection */ +} atemu; + +/* Private data (similar to async_struct in <linux/serial.h>) */ +typedef struct modem_info { + int magic; + struct tty_port port; + int x_char; /* xon/xoff character */ + int mcr; /* Modem control register */ + int msr; /* Modem status register */ + int lsr; /* Line status register */ + int line; + int online; /* 1 = B-Channel is up, drop data */ + /* 2 = B-Channel is up, deliver d.*/ + int dialing; /* Dial in progress or ATA */ + 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 */ + unsigned char last_cause[8]; /* Last cause message */ + unsigned char last_num[ISDN_MSNLEN]; + /* Last phone-number */ + unsigned char last_l2; /* Last layer-2 protocol */ + unsigned char last_si; /* Last service */ + unsigned char last_lhup; /* Last hangup local? */ + unsigned char last_dir; /* Last direction (in or out) */ + 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 */ + struct sk_buff_head xmit_queue; /* transmit queue */ + atomic_t xmit_lock; /* Semaphore for isdn_tty_write */ +#ifdef CONFIG_ISDN_AUDIO + int vonline; /* Voice-channel status */ + /* Bit 0 = recording */ + /* Bit 1 = playback */ + /* Bit 2 = playback, DLE-ETX seen */ + struct sk_buff_head dtmf_queue; /* queue for dtmf results */ + void *adpcms; /* state for adpcm decompression */ + void *adpcmr; /* state for adpcm compression */ + void *dtmf_state; /* state for dtmf decoder */ + void *silence_state; /* state for silence detection */ +#endif +#ifdef CONFIG_ISDN_TTY_FAX + struct T30_s *fax; /* T30 Fax Group 3 data/interface */ + int faxonline; /* Fax-channel status */ +#endif + atemu emu; /* AT-emulator data */ + spinlock_t readlock; +} modem_info; + +#define ISDN_MODEM_WINSIZE 8 + +/* Description of one ISDN-tty */ +typedef struct _isdn_modem { + int refcount; /* Number of opens */ + struct tty_driver *tty_modem; /* tty-device */ + struct tty_struct *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */ + struct ktermios *modem_termios[ISDN_MAX_CHANNELS]; + struct ktermios *modem_termios_locked[ISDN_MAX_CHANNELS]; + modem_info info[ISDN_MAX_CHANNELS]; /* Private data */ +} isdn_modem_t; + +/*======================= End of ISDN-tty stuff ============================*/ + +/*======================== Start of V.110 stuff ============================*/ +#define V110_BUFSIZE 1024 + +typedef struct { + int nbytes; /* 1 Matrixbyte -> nbytes in stream */ + int nbits; /* Number of used bits in streambyte */ + unsigned char key; /* Bitmask in stream eg. 11 (nbits=2) */ + int decodelen; /* Amount of data in decodebuf */ + int SyncInit; /* Number of sync frames to send */ + unsigned char *OnlineFrame; /* Precalculated V110 idle frame */ + unsigned char *OfflineFrame; /* Precalculated V110 sync Frame */ + int framelen; /* Length of frames */ + int skbuser; /* Number of unacked userdata skbs */ + int skbidle; /* Number of unacked idle/sync skbs */ + int introducer; /* Local vars for decoder */ + int dbit; + unsigned char b; + int skbres; /* space to reserve in outgoing skb */ + int maxsize; /* maxbufsize of lowlevel driver */ + unsigned char *encodebuf; /* temporary buffer for encoding */ + unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices */ +} isdn_v110_stream; + +/*========================= End of V.110 stuff =============================*/ + +/*======================= Start of general stuff ===========================*/ + +typedef struct { + char *next; + char *private; +} infostruct; + +#define DRV_FLAG_RUNNING 1 +#define DRV_FLAG_REJBUS 2 +#define DRV_FLAG_LOADED 4 + +/* Description of hardware-level-driver */ +typedef struct _isdn_driver { + ulong online; /* Channel-Online flags */ + ulong flags; /* Misc driver Flags */ + int locks; /* Number of locks for this driver */ + int channels; /* Number of channels */ + wait_queue_head_t st_waitq; /* Wait-Queue for status-read's */ + int maxbufsize; /* Maximum Buffersize supported */ + unsigned long pktcount; /* Until now: unused */ + 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 */ +#ifdef CONFIG_ISDN_AUDIO + unsigned long DLEflag; /* Flags: Insert DLE at next read */ +#endif + struct sk_buff_head *rpqueue; /* Pointers to start of Rcv-Queue */ + wait_queue_head_t *rcv_waitq; /* Wait-Queues for B-Channel-Reads */ + wait_queue_head_t *snd_waitq; /* Wait-Queue for B-Channel-Send's */ + char msn2eaz[10][ISDN_MSNLEN]; /* Mapping-Table MSN->EAZ */ +} isdn_driver_t; + +/* Main driver-data */ +typedef struct isdn_devt { + struct module *owner; + spinlock_t lock; + 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 */ + spinlock_t timerlock; + int tflags; /* Timer-Flags: */ + /* see ISDN_TIMER_..defines */ + int global_flags; + infostruct *infochain; /* List of open info-devs. */ + wait_queue_head_t 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][ISDN_MSNLEN]; + /* Remote number of active ch.*/ + int m_idx[ISDN_MAX_CHANNELS]; /* Index for mdm.... */ + isdn_driver_t *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 */ + isdn_modem_t 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 */ + int v110emu[ISDN_MAX_CHANNELS]; /* V.110 emulator-mode 0=none */ + atomic_t v110use[ISDN_MAX_CHANNELS]; /* Usage-Semaphore for stream */ + isdn_v110_stream *v110[ISDN_MAX_CHANNELS]; /* V.110 private data */ + struct mutex mtx; /* serialize list access*/ + unsigned long global_features; +} isdn_dev; + +extern isdn_dev *dev; + + +#endif /* __ISDN_H__ */ |