1 /* $Id: isdn.h,v 1.125.2.3 2004/02/10 01:07:14 keil Exp $ 2 * 3 * Main header for the Linux ISDN subsystem (linklevel). 4 * 5 * Copyright 1994,95,96 by Fritz Elfert (fritz@isdn4linux.de) 6 * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg 7 * Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de) 8 * 9 * This software may be used and distributed according to the terms 10 * of the GNU General Public License, incorporated herein by reference. 11 * 12 */ 13 14 #ifndef __ISDN_H__ 15 #define __ISDN_H__ 16 17 #include <linux/ioctl.h> 18 19 #define ISDN_MAX_DRIVERS 32 20 #define ISDN_MAX_CHANNELS 64 21 22 /* New ioctl-codes */ 23 #define IIOCNETAIF _IO('I',1) 24 #define IIOCNETDIF _IO('I',2) 25 #define IIOCNETSCF _IO('I',3) 26 #define IIOCNETGCF _IO('I',4) 27 #define IIOCNETANM _IO('I',5) 28 #define IIOCNETDNM _IO('I',6) 29 #define IIOCNETGNM _IO('I',7) 30 #define IIOCGETSET _IO('I',8) /* no longer supported */ 31 #define IIOCSETSET _IO('I',9) /* no longer supported */ 32 #define IIOCSETVER _IO('I',10) 33 #define IIOCNETHUP _IO('I',11) 34 #define IIOCSETGST _IO('I',12) 35 #define IIOCSETBRJ _IO('I',13) 36 #define IIOCSIGPRF _IO('I',14) 37 #define IIOCGETPRF _IO('I',15) 38 #define IIOCSETPRF _IO('I',16) 39 #define IIOCGETMAP _IO('I',17) 40 #define IIOCSETMAP _IO('I',18) 41 #define IIOCNETASL _IO('I',19) 42 #define IIOCNETDIL _IO('I',20) 43 #define IIOCGETCPS _IO('I',21) 44 #define IIOCGETDVR _IO('I',22) 45 #define IIOCNETLCR _IO('I',23) /* dwabc ioctl for LCR from isdnlog */ 46 #define IIOCNETDWRSET _IO('I',24) /* dwabc ioctl to reset abc-values to default on a net-interface */ 47 48 #define IIOCNETALN _IO('I',32) 49 #define IIOCNETDLN _IO('I',33) 50 51 #define IIOCNETGPN _IO('I',34) 52 53 #define IIOCDBGVAR _IO('I',127) 54 55 #define IIOCDRVCTL _IO('I',128) 56 57 /* cisco hdlck device private ioctls */ 58 #define SIOCGKEEPPERIOD (SIOCDEVPRIVATE + 0) 59 #define SIOCSKEEPPERIOD (SIOCDEVPRIVATE + 1) 60 #define SIOCGDEBSERINT (SIOCDEVPRIVATE + 2) 61 #define SIOCSDEBSERINT (SIOCDEVPRIVATE + 3) 62 63 /* Packet encapsulations for net-interfaces */ 64 #define ISDN_NET_ENCAP_ETHER 0 65 #define ISDN_NET_ENCAP_RAWIP 1 66 #define ISDN_NET_ENCAP_IPTYP 2 67 #define ISDN_NET_ENCAP_CISCOHDLC 3 /* Without SLARP and keepalive */ 68 #define ISDN_NET_ENCAP_SYNCPPP 4 69 #define ISDN_NET_ENCAP_UIHDLC 5 70 #define ISDN_NET_ENCAP_CISCOHDLCK 6 /* With SLARP and keepalive */ 71 #define ISDN_NET_ENCAP_X25IFACE 7 /* Documentation/networking/x25-iface.txt*/ 72 #define ISDN_NET_ENCAP_MAX_ENCAP ISDN_NET_ENCAP_X25IFACE 73 74 /* Facility which currently uses an ISDN-channel */ 75 #define ISDN_USAGE_NONE 0 76 #define ISDN_USAGE_RAW 1 77 #define ISDN_USAGE_MODEM 2 78 #define ISDN_USAGE_NET 3 79 #define ISDN_USAGE_VOICE 4 80 #define ISDN_USAGE_FAX 5 81 #define ISDN_USAGE_MASK 7 /* Mask to get plain usage */ 82 #define ISDN_USAGE_DISABLED 32 /* This bit is set, if channel is disabled */ 83 #define ISDN_USAGE_EXCLUSIVE 64 /* This bit is set, if channel is exclusive */ 84 #define ISDN_USAGE_OUTGOING 128 /* This bit is set, if channel is outgoing */ 85 86 #define ISDN_MODEM_NUMREG 24 /* Number of Modem-Registers */ 87 #define ISDN_LMSNLEN 255 /* Length of tty's Listen-MSN string */ 88 #define ISDN_CMSGLEN 50 /* Length of CONNECT-Message to add for Modem */ 89 90 #define ISDN_MSNLEN 32 91 #define NET_DV 0x06 /* Data version for isdn_net_ioctl_cfg */ 92 #define TTY_DV 0x06 /* Data version for iprofd etc. */ 93 94 #define INF_DV 0x01 /* Data version for /dev/isdninfo */ 95 96 typedef struct { 97 char drvid[25]; 98 unsigned long arg; 99 } isdn_ioctl_struct; 100 101 typedef struct { 102 char name[10]; 103 char phone[ISDN_MSNLEN]; 104 int outgoing; 105 } isdn_net_ioctl_phone; 106 107 typedef struct { 108 char name[10]; /* Name of interface */ 109 char master[10]; /* Name of Master for Bundling */ 110 char slave[10]; /* Name of Slave for Bundling */ 111 char eaz[256]; /* EAZ/MSN */ 112 char drvid[25]; /* DriverId for Bindings */ 113 int onhtime; /* Hangup-Timeout */ 114 int charge; /* Charge-Units */ 115 int l2_proto; /* Layer-2 protocol */ 116 int l3_proto; /* Layer-3 protocol */ 117 int p_encap; /* Encapsulation */ 118 int exclusive; /* Channel, if bound exclusive */ 119 int dialmax; /* Dial Retry-Counter */ 120 int slavedelay; /* Delay until slave starts up */ 121 int cbdelay; /* Delay before Callback */ 122 int chargehup; /* Flag: Charge-Hangup */ 123 int ihup; /* Flag: Hangup-Timeout on incoming line */ 124 int secure; /* Flag: Secure */ 125 int callback; /* Flag: Callback */ 126 int cbhup; /* Flag: Reject Call before Callback */ 127 int pppbind; /* ippp device for bindings */ 128 int chargeint; /* Use fixed charge interval length */ 129 int triggercps; /* BogoCPS needed for triggering slave */ 130 int dialtimeout; /* Dial-Timeout */ 131 int dialwait; /* Time to wait after failed dial */ 132 int dialmode; /* Flag: off / on / auto */ 133 } isdn_net_ioctl_cfg; 134 135 #define ISDN_NET_DIALMODE_MASK 0xC0 /* bits for status */ 136 #define ISDN_NET_DM_OFF 0x00 /* this interface is stopped */ 137 #define ISDN_NET_DM_MANUAL 0x40 /* this interface is on (manual) */ 138 #define ISDN_NET_DM_AUTO 0x80 /* this interface is autodial */ 139 #define ISDN_NET_DIALMODE(x) ((&(x))->flags & ISDN_NET_DIALMODE_MASK) 140 141 #ifdef __KERNEL__ 142 143 #include <linux/errno.h> 144 #include <linux/fs.h> 145 #include <linux/major.h> 146 #include <asm/io.h> 147 #include <linux/kernel.h> 148 #include <linux/signal.h> 149 #include <linux/slab.h> 150 #include <linux/timer.h> 151 #include <linux/wait.h> 152 #include <linux/tty.h> 153 #include <linux/tty_flip.h> 154 #include <linux/serial_reg.h> 155 #include <linux/fcntl.h> 156 #include <linux/types.h> 157 #include <linux/interrupt.h> 158 #include <linux/ip.h> 159 #include <linux/in.h> 160 #include <linux/netdevice.h> 161 #include <linux/etherdevice.h> 162 #include <linux/skbuff.h> 163 #include <linux/tcp.h> 164 #include <linux/mutex.h> 165 166 #define ISDN_TTY_MAJOR 43 167 #define ISDN_TTYAUX_MAJOR 44 168 #define ISDN_MAJOR 45 169 170 /* The minor-devicenumbers for Channel 0 and 1 are used as arguments for 171 * physical Channel-Mapping, so they MUST NOT be changed without changing 172 * the correspondent code in isdn.c 173 */ 174 175 #define ISDN_MINOR_B 0 176 #define ISDN_MINOR_BMAX (ISDN_MAX_CHANNELS-1) 177 #define ISDN_MINOR_CTRL 64 178 #define ISDN_MINOR_CTRLMAX (64 + (ISDN_MAX_CHANNELS-1)) 179 #define ISDN_MINOR_PPP 128 180 #define ISDN_MINOR_PPPMAX (128 + (ISDN_MAX_CHANNELS-1)) 181 #define ISDN_MINOR_STATUS 255 182 183 #ifdef CONFIG_ISDN_PPP 184 185 #ifdef CONFIG_ISDN_PPP_VJ 186 # include <net/slhc_vj.h> 187 #endif 188 189 #include <linux/ppp_defs.h> 190 #include <linux/if_ppp.h> 191 192 #include <linux/isdn_ppp.h> 193 #endif 194 195 #ifdef CONFIG_ISDN_X25 196 # include <linux/concap.h> 197 #endif 198 199 #include <linux/isdnif.h> 200 201 #define ISDN_DRVIOCTL_MASK 0x7f /* Mask for Device-ioctl */ 202 203 /* Until now unused */ 204 #define ISDN_SERVICE_VOICE 1 205 #define ISDN_SERVICE_AB 1<<1 206 #define ISDN_SERVICE_X21 1<<2 207 #define ISDN_SERVICE_G4 1<<3 208 #define ISDN_SERVICE_BTX 1<<4 209 #define ISDN_SERVICE_DFUE 1<<5 210 #define ISDN_SERVICE_X25 1<<6 211 #define ISDN_SERVICE_TTX 1<<7 212 #define ISDN_SERVICE_MIXED 1<<8 213 #define ISDN_SERVICE_FW 1<<9 214 #define ISDN_SERVICE_GTEL 1<<10 215 #define ISDN_SERVICE_BTXN 1<<11 216 #define ISDN_SERVICE_BTEL 1<<12 217 218 /* Macros checking plain usage */ 219 #define USG_NONE(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NONE) 220 #define USG_RAW(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_RAW) 221 #define USG_MODEM(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) 222 #define USG_VOICE(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE) 223 #define USG_NET(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_NET) 224 #define USG_FAX(x) ((x & ISDN_USAGE_MASK)==ISDN_USAGE_FAX) 225 #define USG_OUTGOING(x) ((x & ISDN_USAGE_OUTGOING)==ISDN_USAGE_OUTGOING) 226 #define USG_MODEMORVOICE(x) (((x & ISDN_USAGE_MASK)==ISDN_USAGE_MODEM) || \ 227 ((x & ISDN_USAGE_MASK)==ISDN_USAGE_VOICE) ) 228 229 /* Timer-delays and scheduling-flags */ 230 #define ISDN_TIMER_RES 4 /* Main Timer-Resolution */ 231 #define ISDN_TIMER_02SEC (HZ/ISDN_TIMER_RES/5) /* Slow-Timer1 .2 sec */ 232 #define ISDN_TIMER_1SEC (HZ/ISDN_TIMER_RES) /* Slow-Timer2 1 sec */ 233 #define ISDN_TIMER_RINGING 5 /* tty RINGs = ISDN_TIMER_1SEC * this factor */ 234 #define ISDN_TIMER_KEEPINT 10 /* Cisco-Keepalive = ISDN_TIMER_1SEC * this factor */ 235 #define ISDN_TIMER_MODEMREAD 1 236 #define ISDN_TIMER_MODEMPLUS 2 237 #define ISDN_TIMER_MODEMRING 4 238 #define ISDN_TIMER_MODEMXMIT 8 239 #define ISDN_TIMER_NETDIAL 16 240 #define ISDN_TIMER_NETHANGUP 32 241 #define ISDN_TIMER_CARRIER 256 /* Wait for Carrier */ 242 #define ISDN_TIMER_FAST (ISDN_TIMER_MODEMREAD | ISDN_TIMER_MODEMPLUS | \ 243 ISDN_TIMER_MODEMXMIT) 244 #define ISDN_TIMER_SLOW (ISDN_TIMER_MODEMRING | ISDN_TIMER_NETHANGUP | \ 245 ISDN_TIMER_NETDIAL | ISDN_TIMER_CARRIER) 246 247 /* Timeout-Values for isdn_net_dial() */ 248 #define ISDN_TIMER_DTIMEOUT10 (10*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1))) 249 #define ISDN_TIMER_DTIMEOUT15 (15*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1))) 250 #define ISDN_TIMER_DTIMEOUT60 (60*HZ/(ISDN_TIMER_02SEC*(ISDN_TIMER_RES+1))) 251 252 /* GLOBAL_FLAGS */ 253 #define ISDN_GLOBAL_STOPPED 1 254 255 /*=================== Start of ip-over-ISDN stuff =========================*/ 256 257 /* Feature- and status-flags for a net-interface */ 258 #define ISDN_NET_CONNECTED 0x01 /* Bound to ISDN-Channel */ 259 #define ISDN_NET_SECURE 0x02 /* Accept calls from phonelist only */ 260 #define ISDN_NET_CALLBACK 0x04 /* activate callback */ 261 #define ISDN_NET_CBHUP 0x08 /* hangup before callback */ 262 #define ISDN_NET_CBOUT 0x10 /* remote machine does callback */ 263 264 #define ISDN_NET_MAGIC 0x49344C02 /* for paranoia-checking */ 265 266 /* Phone-list-element */ 267 typedef struct { 268 void *next; 269 char num[ISDN_MSNLEN]; 270 } isdn_net_phone; 271 272 /* 273 Principles when extending structures for generic encapsulation protocol 274 ("concap") support: 275 - Stuff which is hardware specific (here i4l-specific) goes in 276 the netdev -> local structure (here: isdn_net_local) 277 - Stuff which is encapsulation protocol specific goes in the structure 278 which holds the linux device structure (here: isdn_net_device) 279 */ 280 281 /* Local interface-data */ 282 typedef struct isdn_net_local_s { 283 ulong magic; 284 struct net_device_stats stats; /* Ethernet Statistics */ 285 int isdn_device; /* Index to isdn-device */ 286 int isdn_channel; /* Index to isdn-channel */ 287 int ppp_slot; /* PPPD device slot number */ 288 int pre_device; /* Preselected isdn-device */ 289 int pre_channel; /* Preselected isdn-channel */ 290 int exclusive; /* If non-zero idx to reserved chan.*/ 291 int flags; /* Connection-flags */ 292 int dialretry; /* Counter for Dialout-retries */ 293 int dialmax; /* Max. Number of Dial-retries */ 294 int cbdelay; /* Delay before Callback starts */ 295 int dtimer; /* Timeout-counter for dialing */ 296 char msn[ISDN_MSNLEN]; /* MSNs/EAZs for this interface */ 297 u_char cbhup; /* Flag: Reject Call before Callback*/ 298 u_char dialstate; /* State for dialing */ 299 u_char p_encap; /* Packet encapsulation */ 300 /* 0 = Ethernet over ISDN */ 301 /* 1 = RAW-IP */ 302 /* 2 = IP with type field */ 303 u_char l2_proto; /* Layer-2-protocol */ 304 /* See ISDN_PROTO_L2..-constants in */ 305 /* isdnif.h */ 306 /* 0 = X75/LAPB with I-Frames */ 307 /* 1 = X75/LAPB with UI-Frames */ 308 /* 2 = X75/LAPB with BUI-Frames */ 309 /* 3 = HDLC */ 310 u_char l3_proto; /* Layer-3-protocol */ 311 /* See ISDN_PROTO_L3..-constants in */ 312 /* isdnif.h */ 313 /* 0 = Transparent */ 314 int huptimer; /* Timeout-counter for auto-hangup */ 315 int charge; /* Counter for charging units */ 316 ulong chargetime; /* Timer for Charging info */ 317 int hupflags; /* Flags for charge-unit-hangup: */ 318 /* bit0: chargeint is invalid */ 319 /* bit1: Getting charge-interval */ 320 /* bit2: Do charge-unit-hangup */ 321 /* bit3: Do hangup even on incoming */ 322 int outgoing; /* Flag: outgoing call */ 323 int onhtime; /* Time to keep link up */ 324 int chargeint; /* Interval between charge-infos */ 325 int onum; /* Flag: at least 1 outgoing number */ 326 int cps; /* current speed of this interface */ 327 int transcount; /* byte-counter for cps-calculation */ 328 int sqfull; /* Flag: netdev-queue overloaded */ 329 ulong sqfull_stamp; /* Start-Time of overload */ 330 ulong slavedelay; /* Dynamic bundling delaytime */ 331 int triggercps; /* BogoCPS needed for trigger slave */ 332 isdn_net_phone *phone[2]; /* List of remote-phonenumbers */ 333 /* phone[0] = Incoming Numbers */ 334 /* phone[1] = Outgoing Numbers */ 335 isdn_net_phone *dial; /* Pointer to dialed number */ 336 struct net_device *master; /* Ptr to Master device for slaves */ 337 struct net_device *slave; /* Ptr to Slave device for masters */ 338 struct isdn_net_local_s *next; /* Ptr to next link in bundle */ 339 struct isdn_net_local_s *last; /* Ptr to last link in bundle */ 340 struct isdn_net_dev_s *netdev; /* Ptr to netdev */ 341 struct sk_buff_head super_tx_queue; /* List of supervisory frames to */ 342 /* be transmitted asap */ 343 atomic_t frame_cnt; /* number of frames currently */ 344 /* queued in HL driver */ 345 /* Ptr to orig. hard_header_cache */ 346 spinlock_t xmit_lock; /* used to protect the xmit path of */ 347 /* a particular channel (including */ 348 /* the frame_cnt */ 349 350 int pppbind; /* ippp device for bindings */ 351 int dialtimeout; /* How long shall we try on dialing? (jiffies) */ 352 int dialwait; /* How long shall we wait after failed attempt? (jiffies) */ 353 ulong dialstarted; /* jiffies of first dialing-attempt */ 354 ulong dialwait_timer; /* jiffies of earliest next dialing-attempt */ 355 int huptimeout; /* How long will the connection be up? (seconds) */ 356 #ifdef CONFIG_ISDN_X25 357 struct concap_device_ops *dops; /* callbacks used by encapsulator */ 358 #endif 359 /* use an own struct for that in later versions */ 360 ulong cisco_myseq; /* Local keepalive seq. for Cisco */ 361 ulong cisco_mineseen; /* returned keepalive seq. from remote */ 362 ulong cisco_yourseq; /* Remote keepalive seq. for Cisco */ 363 int cisco_keepalive_period; /* keepalive period */ 364 ulong cisco_last_slarp_in; /* jiffie of last keepalive packet we received */ 365 char cisco_line_state; /* state of line according to keepalive packets */ 366 char cisco_debserint; /* debugging flag of cisco hdlc with slarp */ 367 struct timer_list cisco_timer; 368 struct work_struct tqueue; 369 } isdn_net_local; 370 371 /* the interface itself */ 372 typedef struct isdn_net_dev_s { 373 isdn_net_local *local; 374 isdn_net_local *queue; /* circular list of all bundled 375 channels, which are currently 376 online */ 377 spinlock_t queue_lock; /* lock to protect queue */ 378 void *next; /* Pointer to next isdn-interface */ 379 struct net_device *dev; /* interface to upper levels */ 380 #ifdef CONFIG_ISDN_PPP 381 ippp_bundle * pb; /* pointer to the common bundle structure 382 * with the per-bundle data */ 383 #endif 384 #ifdef CONFIG_ISDN_X25 385 struct concap_proto *cprot; /* connection oriented encapsulation protocol */ 386 #endif 387 388 } isdn_net_dev; 389 390 /*===================== End of ip-over-ISDN stuff ===========================*/ 391 392 /*======================= Start of ISDN-tty stuff ===========================*/ 393 394 #define ISDN_ASYNC_MAGIC 0x49344C01 /* for paranoia-checking */ 395 #define ISDN_ASYNC_INITIALIZED 0x80000000 /* port was initialized */ 396 #define ISDN_ASYNC_CALLOUT_ACTIVE 0x40000000 /* Call out device active */ 397 #define ISDN_ASYNC_NORMAL_ACTIVE 0x20000000 /* Normal device active */ 398 #define ISDN_ASYNC_CLOSING 0x08000000 /* Serial port is closing */ 399 #define ISDN_ASYNC_CTS_FLOW 0x04000000 /* Do CTS flow control */ 400 #define ISDN_ASYNC_CHECK_CD 0x02000000 /* i.e., CLOCAL */ 401 #define ISDN_ASYNC_HUP_NOTIFY 0x0001 /* Notify tty on hangups/closes */ 402 #define ISDN_ASYNC_SESSION_LOCKOUT 0x0100 /* Lock cua opens on session */ 403 #define ISDN_ASYNC_PGRP_LOCKOUT 0x0200 /* Lock cua opens on pgrp */ 404 #define ISDN_ASYNC_CALLOUT_NOHUP 0x0400 /* No hangup for cui */ 405 #define ISDN_ASYNC_SPLIT_TERMIOS 0x0008 /* Sep. termios for dialin/out */ 406 #define ISDN_SERIAL_XMIT_SIZE 1024 /* Default bufsize for write */ 407 #define ISDN_SERIAL_XMIT_MAX 4000 /* Maximum bufsize for write */ 408 #define ISDN_SERIAL_TYPE_NORMAL 1 409 #define ISDN_SERIAL_TYPE_CALLOUT 2 410 411 #ifdef CONFIG_ISDN_AUDIO 412 /* For using sk_buffs with audio we need some private variables 413 * within each sk_buff. For this purpose, we declare a struct here, 414 * and put it always at the private skb->cb data array. A few macros help 415 * accessing the variables. 416 */ 417 typedef struct _isdn_audio_data { 418 unsigned short dle_count; 419 unsigned char lock; 420 } isdn_audio_data_t; 421 422 #define ISDN_AUDIO_SKB_DLECOUNT(skb) (((isdn_audio_data_t *)&skb->cb[0])->dle_count) 423 #define ISDN_AUDIO_SKB_LOCK(skb) (((isdn_audio_data_t *)&skb->cb[0])->lock) 424 #endif 425 426 /* Private data of AT-command-interpreter */ 427 typedef struct atemu { 428 u_char profile[ISDN_MODEM_NUMREG]; /* Modem-Regs. Profile 0 */ 429 u_char mdmreg[ISDN_MODEM_NUMREG]; /* Modem-Registers */ 430 char pmsn[ISDN_MSNLEN]; /* EAZ/MSNs Profile 0 */ 431 char msn[ISDN_MSNLEN]; /* EAZ/MSN */ 432 char plmsn[ISDN_LMSNLEN]; /* Listening MSNs Profile 0 */ 433 char lmsn[ISDN_LMSNLEN]; /* Listening MSNs */ 434 char cpn[ISDN_MSNLEN]; /* CalledPartyNumber on incoming call */ 435 char connmsg[ISDN_CMSGLEN]; /* CONNECT-Msg from HL-Driver */ 436 #ifdef CONFIG_ISDN_AUDIO 437 u_char vpar[10]; /* Voice-parameters */ 438 int lastDLE; /* Flag for voice-coding: DLE seen */ 439 #endif 440 int mdmcmdl; /* Length of Modem-Commandbuffer */ 441 int pluscount; /* Counter for +++ sequence */ 442 u_long lastplus; /* Timestamp of last + */ 443 int carrierwait; /* Seconds of carrier waiting */ 444 char mdmcmd[255]; /* Modem-Commandbuffer */ 445 unsigned int charge; /* Charge units of current connection */ 446 } atemu; 447 448 /* Private data (similar to async_struct in <linux/serial.h>) */ 449 typedef struct modem_info { 450 int magic; 451 struct module *owner; 452 int flags; /* defined in tty.h */ 453 int x_char; /* xon/xoff character */ 454 int mcr; /* Modem control register */ 455 int msr; /* Modem status register */ 456 int lsr; /* Line status register */ 457 int line; 458 int count; /* # of fd on device */ 459 int blocked_open; /* # of blocked opens */ 460 long session; /* Session of opening process */ 461 long pgrp; /* pgrp of opening process */ 462 int online; /* 1 = B-Channel is up, drop data */ 463 /* 2 = B-Channel is up, deliver d.*/ 464 int dialing; /* Dial in progress or ATA */ 465 int rcvsched; /* Receive needs schedule */ 466 int isdn_driver; /* Index to isdn-driver */ 467 int isdn_channel; /* Index to isdn-channel */ 468 int drv_index; /* Index to dev->usage */ 469 int ncarrier; /* Flag: schedule NO CARRIER */ 470 unsigned char last_cause[8]; /* Last cause message */ 471 unsigned char last_num[ISDN_MSNLEN]; 472 /* Last phone-number */ 473 unsigned char last_l2; /* Last layer-2 protocol */ 474 unsigned char last_si; /* Last service */ 475 unsigned char last_lhup; /* Last hangup local? */ 476 unsigned char last_dir; /* Last direction (in or out) */ 477 struct timer_list nc_timer; /* Timer for delayed NO CARRIER */ 478 int send_outstanding;/* # of outstanding send-requests */ 479 int xmit_size; /* max. # of chars in xmit_buf */ 480 int xmit_count; /* # of chars in xmit_buf */ 481 unsigned char *xmit_buf; /* transmit buffer */ 482 struct sk_buff_head xmit_queue; /* transmit queue */ 483 atomic_t xmit_lock; /* Semaphore for isdn_tty_write */ 484 #ifdef CONFIG_ISDN_AUDIO 485 int vonline; /* Voice-channel status */ 486 /* Bit 0 = recording */ 487 /* Bit 1 = playback */ 488 /* Bit 2 = playback, DLE-ETX seen */ 489 struct sk_buff_head dtmf_queue; /* queue for dtmf results */ 490 void *adpcms; /* state for adpcm decompression */ 491 void *adpcmr; /* state for adpcm compression */ 492 void *dtmf_state; /* state for dtmf decoder */ 493 void *silence_state; /* state for silence detection */ 494 #endif 495 #ifdef CONFIG_ISDN_TTY_FAX 496 struct T30_s *fax; /* T30 Fax Group 3 data/interface */ 497 int faxonline; /* Fax-channel status */ 498 #endif 499 struct tty_struct *tty; /* Pointer to corresponding tty */ 500 atemu emu; /* AT-emulator data */ 501 struct ktermios normal_termios; /* For saving termios structs */ 502 struct ktermios callout_termios; 503 wait_queue_head_t open_wait, close_wait; 504 spinlock_t readlock; 505 } modem_info; 506 507 #define ISDN_MODEM_WINSIZE 8 508 509 /* Description of one ISDN-tty */ 510 typedef struct _isdn_modem { 511 int refcount; /* Number of opens */ 512 struct tty_driver *tty_modem; /* tty-device */ 513 struct tty_struct *modem_table[ISDN_MAX_CHANNELS]; /* ?? copied from Orig */ 514 struct ktermios *modem_termios[ISDN_MAX_CHANNELS]; 515 struct ktermios *modem_termios_locked[ISDN_MAX_CHANNELS]; 516 modem_info info[ISDN_MAX_CHANNELS]; /* Private data */ 517 } isdn_modem_t; 518 519 /*======================= End of ISDN-tty stuff ============================*/ 520 521 /*======================== Start of V.110 stuff ============================*/ 522 #define V110_BUFSIZE 1024 523 524 typedef struct { 525 int nbytes; /* 1 Matrixbyte -> nbytes in stream */ 526 int nbits; /* Number of used bits in streambyte */ 527 unsigned char key; /* Bitmask in stream eg. 11 (nbits=2) */ 528 int decodelen; /* Amount of data in decodebuf */ 529 int SyncInit; /* Number of sync frames to send */ 530 unsigned char *OnlineFrame; /* Precalculated V110 idle frame */ 531 unsigned char *OfflineFrame; /* Precalculated V110 sync Frame */ 532 int framelen; /* Length of frames */ 533 int skbuser; /* Number of unacked userdata skbs */ 534 int skbidle; /* Number of unacked idle/sync skbs */ 535 int introducer; /* Local vars for decoder */ 536 int dbit; 537 unsigned char b; 538 int skbres; /* space to reserve in outgoing skb */ 539 int maxsize; /* maxbufsize of lowlevel driver */ 540 unsigned char *encodebuf; /* temporary buffer for encoding */ 541 unsigned char decodebuf[V110_BUFSIZE]; /* incomplete V110 matrices */ 542 } isdn_v110_stream; 543 544 /*========================= End of V.110 stuff =============================*/ 545 546 /*======================= Start of general stuff ===========================*/ 547 548 typedef struct { 549 char *next; 550 char *private; 551 } infostruct; 552 553 #define DRV_FLAG_RUNNING 1 554 #define DRV_FLAG_REJBUS 2 555 #define DRV_FLAG_LOADED 4 556 557 /* Description of hardware-level-driver */ 558 typedef struct _isdn_driver { 559 ulong online; /* Channel-Online flags */ 560 ulong flags; /* Misc driver Flags */ 561 int locks; /* Number of locks for this driver */ 562 int channels; /* Number of channels */ 563 wait_queue_head_t st_waitq; /* Wait-Queue for status-read's */ 564 int maxbufsize; /* Maximum Buffersize supported */ 565 unsigned long pktcount; /* Until now: unused */ 566 int stavail; /* Chars avail on Status-device */ 567 isdn_if *interface; /* Interface to driver */ 568 int *rcverr; /* Error-counters for B-Ch.-receive */ 569 int *rcvcount; /* Byte-counters for B-Ch.-receive */ 570 #ifdef CONFIG_ISDN_AUDIO 571 unsigned long DLEflag; /* Flags: Insert DLE at next read */ 572 #endif 573 struct sk_buff_head *rpqueue; /* Pointers to start of Rcv-Queue */ 574 wait_queue_head_t *rcv_waitq; /* Wait-Queues for B-Channel-Reads */ 575 wait_queue_head_t *snd_waitq; /* Wait-Queue for B-Channel-Send's */ 576 char msn2eaz[10][ISDN_MSNLEN]; /* Mapping-Table MSN->EAZ */ 577 } isdn_driver_t; 578 579 /* Main driver-data */ 580 typedef struct isdn_devt { 581 struct module *owner; 582 spinlock_t lock; 583 unsigned short flags; /* Bitmapped Flags: */ 584 int drivers; /* Current number of drivers */ 585 int channels; /* Current number of channels */ 586 int net_verbose; /* Verbose-Flag */ 587 int modempoll; /* Flag: tty-read active */ 588 spinlock_t timerlock; 589 int tflags; /* Timer-Flags: */ 590 /* see ISDN_TIMER_..defines */ 591 int global_flags; 592 infostruct *infochain; /* List of open info-devs. */ 593 wait_queue_head_t info_waitq; /* Wait-Queue for isdninfo */ 594 struct timer_list timer; /* Misc.-function Timer */ 595 int chanmap[ISDN_MAX_CHANNELS]; /* Map minor->device-channel */ 596 int drvmap[ISDN_MAX_CHANNELS]; /* Map minor->driver-index */ 597 int usage[ISDN_MAX_CHANNELS]; /* Used by tty/ip/voice */ 598 char num[ISDN_MAX_CHANNELS][ISDN_MSNLEN]; 599 /* Remote number of active ch.*/ 600 int m_idx[ISDN_MAX_CHANNELS]; /* Index for mdm.... */ 601 isdn_driver_t *drv[ISDN_MAX_DRIVERS]; /* Array of drivers */ 602 isdn_net_dev *netdev; /* Linked list of net-if's */ 603 char drvid[ISDN_MAX_DRIVERS][20];/* Driver-ID */ 604 struct task_struct *profd; /* For iprofd */ 605 isdn_modem_t mdm; /* tty-driver-data */ 606 isdn_net_dev *rx_netdev[ISDN_MAX_CHANNELS]; /* rx netdev-pointers */ 607 isdn_net_dev *st_netdev[ISDN_MAX_CHANNELS]; /* stat netdev-pointers */ 608 ulong ibytes[ISDN_MAX_CHANNELS]; /* Statistics incoming bytes */ 609 ulong obytes[ISDN_MAX_CHANNELS]; /* Statistics outgoing bytes */ 610 int v110emu[ISDN_MAX_CHANNELS]; /* V.110 emulator-mode 0=none */ 611 atomic_t v110use[ISDN_MAX_CHANNELS]; /* Usage-Semaphore for stream */ 612 isdn_v110_stream *v110[ISDN_MAX_CHANNELS]; /* V.110 private data */ 613 struct mutex mtx; /* serialize list access*/ 614 unsigned long global_features; 615 } isdn_dev; 616 617 extern isdn_dev *dev; 618 619 620 #endif /* __KERNEL__ */ 621 622 #endif /* __ISDN_H__ */ 623