Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/netisdn/i4b_rbch.c
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1 /* 2 * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 *--------------------------------------------------------------------------- 26 * 27 * i4b_rbch.c - device driver for raw B channel data 28 * --------------------------------------------------- 29 * 30 * $Id: i4b_rbch.c,v 1.19 2006/11/16 01:33:49 christos Exp $ 31 * 32 * $FreeBSD$ 33 * 34 * last edit-date: [Fri Jan 5 11:33:47 2001] 35 * 36 *---------------------------------------------------------------------------*/ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: i4b_rbch.c,v 1.19 2006/11/16 01:33:49 christos Exp $"); 40 41 #include "isdnbchan.h" 42 43 #if NISDNBCHAN > 0 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 48 #include <sys/conf.h> 49 #include <sys/uio.h> 50 #include <sys/kernel.h> 51 #include <sys/mbuf.h> 52 #include <sys/socket.h> 53 #include <net/if.h> 54 #include <sys/proc.h> 55 #include <sys/tty.h> 56 57 #if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000 58 #include <sys/callout.h> 59 #endif 60 61 #if defined (__NetBSD__) || defined (__OpenBSD__) 62 #define termioschars(t) memcpy((t)->c_cc, &ttydefchars, sizeof((t)->c_cc)) 63 #endif 64 65 #ifdef __FreeBSD__ 66 67 #if defined(__FreeBSD__) && __FreeBSD__ == 3 68 #include "opt_devfs.h" 69 #endif 70 71 #ifdef DEVFS 72 #include <sys/devfsext.h> 73 #endif 74 75 #endif /* __FreeBSD__ */ 76 77 #ifdef __NetBSD__ 78 #include <sys/filio.h> 79 #endif 80 81 #ifdef __FreeBSD__ 82 #include <machine/i4b_ioctl.h> 83 #include <machine/i4b_rbch_ioctl.h> 84 #include <machine/i4b_debug.h> 85 #else 86 #include <netisdn/i4b_ioctl.h> 87 #include <netisdn/i4b_rbch_ioctl.h> 88 #include <netisdn/i4b_debug.h> 89 #endif 90 91 #include <netisdn/i4b_global.h> 92 #include <netisdn/i4b_mbuf.h> 93 #include <netisdn/i4b_l3l4.h> 94 95 #include <netisdn/i4b_l4.h> 96 97 #ifdef __bsdi__ 98 #include <sys/device.h> 99 #endif 100 101 #ifdef OS_USES_POLL 102 #include <sys/ioccom.h> 103 #include <sys/poll.h> 104 #else 105 #include <sys/fcntl.h> 106 #include <sys/ioctl.h> 107 #endif 108 109 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 110 #include <sys/filio.h> 111 #endif 112 113 #define I4BRBCHACCT 1 /* enable accounting messages */ 114 #define I4BRBCHACCTINTVL 2 /* accounting msg interval in secs */ 115 116 static struct rbch_softc { 117 118 int sc_unit; /* unit number */ 119 120 int sc_devstate; /* state of driver */ 121 #define ST_IDLE 0x00 122 #define ST_CONNECTED 0x01 123 #define ST_ISOPEN 0x02 124 #define ST_RDWAITDATA 0x04 125 #define ST_WRWAITEMPTY 0x08 126 #define ST_NOBLOCK 0x10 127 128 int sc_bprot; /* B-ch protocol used */ 129 130 call_desc_t *sc_cd; /* Call Descriptor */ 131 isdn_link_t *sc_ilt; /* B-channel driver/state */ 132 133 struct termios it_in; 134 135 struct ifqueue sc_hdlcq; /* hdlc read queue */ 136 #define I4BRBCHMAXQLEN 10 137 138 struct selinfo selp; /* select / poll */ 139 140 #if defined(__FreeBSD__) && __FreeBSD__ == 3 141 #ifdef DEVFS 142 void *devfs_token; /* device filesystem */ 143 #endif 144 #endif 145 146 #if I4BRBCHACCT 147 #if defined(__FreeBSD__) 148 struct callout_handle sc_callout; 149 #endif 150 #if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000 151 struct callout sc_callout; 152 #endif 153 154 int sc_iinb; /* isdn driver # of inbytes */ 155 int sc_ioutb; /* isdn driver # of outbytes */ 156 int sc_linb; /* last # of bytes rx'd */ 157 int sc_loutb; /* last # of bytes tx'd */ 158 int sc_fn; /* flag, first null acct */ 159 #endif 160 } rbch_softc[NISDNBCHAN]; 161 162 static void rbch_rx_data_rdy(void *softc); 163 static void rbch_tx_queue_empty(void *softc); 164 static void rbch_connect(void *softc, void *cdp); 165 static void rbch_disconnect(void *softc, void *cdp); 166 static void rbch_clrq(void *softc); 167 static void rbch_activity(void *softc, int rxtx); 168 static void rbch_dialresponse(void *softc, int status, cause_t cause); 169 static void rbch_updown(void *softc, int updown); 170 static void rbch_set_linktab(void *softc, isdn_link_t *ilt); 171 static void* rbch_get_softc(int unit); 172 173 174 #ifndef __FreeBSD__ 175 #define PDEVSTATIC /* - not static - */ 176 #define IOCTL_CMD_T u_long 177 void isdnbchanattach __P((void)); 178 int isdnbchanopen __P((dev_t dev, int flag, int fmt, struct lwp *l)); 179 int isdnbchanclose __P((dev_t dev, int flag, int fmt, struct lwp *l)); 180 int isdnbchanread __P((dev_t dev, struct uio *uio, int ioflag)); 181 int isdnbchanwrite __P((dev_t dev, struct uio *uio, int ioflag)); 182 int isdnbchanioctl __P((dev_t dev, IOCTL_CMD_T cmd, caddr_t arg, int flag, struct lwp* l)); 183 #ifdef OS_USES_POLL 184 int isdnbchanpoll __P((dev_t dev, int events, struct lwp *l)); 185 int isdnbchankqfilter __P((dev_t dev, struct knote *kn)); 186 #else 187 PDEVSTATIC int isdnbchanselect __P((dev_t dev, int rw, struct lwp *l)); 188 #endif 189 #endif 190 191 #ifdef __NetBSD__ 192 const struct cdevsw isdnbchan_cdevsw = { 193 isdnbchanopen, isdnbchanclose, isdnbchanread, isdnbchanwrite, 194 isdnbchanioctl, nostop, notty, isdnbchanpoll, nommap, nokqfilter, 195 D_OTHER 196 }; 197 #endif /* __NetBSD__ */ 198 199 #if BSD > 199306 && defined(__FreeBSD__) 200 #define PDEVSTATIC static 201 #define IOCTL_CMD_T u_long 202 203 PDEVSTATIC d_open_t isdnbchanopen; 204 PDEVSTATIC d_close_t isdnbchanclose; 205 PDEVSTATIC d_read_t isdnbchanread; 206 PDEVSTATIC d_read_t isdnbchanwrite; 207 PDEVSTATIC d_ioctl_t isdnbchanioctl; 208 209 #ifdef OS_USES_POLL 210 PDEVSTATIC d_poll_t isdnbchanpoll; 211 #define POLLFIELD isdnbchanpoll 212 #else 213 PDEVSTATIC d_select_t isdnbchanselect; 214 #define POLLFIELD isdnbchanselect 215 #endif 216 217 #define CDEV_MAJOR 57 218 219 #if defined(__FreeBSD__) && __FreeBSD__ >= 4 220 static struct cdevsw isdnbchan_cdevsw = { 221 /* open */ isdnbchanopen, 222 /* close */ isdnbchanclose, 223 /* read */ isdnbchanread, 224 /* write */ isdnbchanwrite, 225 /* ioctl */ isdnbchanioctl, 226 /* poll */ POLLFIELD, 227 /* mmap */ nommap, 228 /* strategy */ nostrategy, 229 /* name */ "isdnbchan", 230 /* maj */ CDEV_MAJOR, 231 /* dump */ nodump, 232 /* psize */ nopsize, 233 /* flags */ 0, 234 /* bmaj */ -1 235 }; 236 #else 237 static struct cdevsw isdnbchan_cdevsw = { 238 isdnbchanopen, isdnbchanclose, isdnbchanread, isdnbchanwrite, 239 isdnbchanioctl, nostop, noreset, nodevtotty, 240 POLLFIELD, nommap, NULL, "isdnbchan", NULL, -1 241 }; 242 #endif 243 244 static void isdnbchanattach(void *); 245 PSEUDO_SET(isdnbchanattach, i4b_rbch); 246 247 /*===========================================================================* 248 * DEVICE DRIVER ROUTINES 249 *===========================================================================*/ 250 251 /*---------------------------------------------------------------------------* 252 * initialization at kernel load time 253 *---------------------------------------------------------------------------*/ 254 static void 255 isdnbchaninit(void *unused) 256 { 257 #if defined(__FreeBSD__) && __FreeBSD__ >= 4 258 cdevsw_add(&isdnbchan_cdevsw); 259 #else 260 dev_t dev = makedev(CDEV_MAJOR, 0); 261 cdevsw_add(&dev, &isdnbchan_cdevsw, NULL); 262 #endif 263 } 264 265 SYSINIT(isdnbchandev, SI_SUB_DRIVERS, 266 SI_ORDER_MIDDLE+CDEV_MAJOR, &isdnbchaninit, NULL); 267 268 #endif /* BSD > 199306 && defined(__FreeBSD__) */ 269 270 #ifdef __bsdi__ 271 int isdnbchanmatch(struct device *parent, struct cfdata *cf, void *aux); 272 void dummy_isdnbchanattach(struct device*, struct device *, void *); 273 274 #define CDEV_MAJOR 61 275 276 static struct cfdriver isdnbchancd = 277 { NULL, "isdnbchan", isdnbchanmatch, dummy_isdnbchanattach, DV_DULL, 278 sizeof(struct cfdriver) }; 279 struct devsw isdnbchansw = 280 { &isdnbchancd, 281 isdnbchanopen, isdnbchanclose, isdnbchanread, isdnbchanwrite, 282 isdnbchanioctl, seltrue, nommap, nostrat, 283 nodump, nopsize, 0, nostop 284 }; 285 286 int 287 isdnbchanmatch(struct device *parent, struct cfdata *cf, void *aux) 288 { 289 printf("isdnbchanmatch: aux=0x%x\n", aux); 290 return 1; 291 } 292 void 293 dummy_isdnbchanattach(struct device *parent, struct device *self, void *aux) 294 { 295 printf("dummy_isdnbchanattach: aux=0x%x\n", aux); 296 } 297 #endif /* __bsdi__ */ 298 299 300 static const struct isdn_l4_driver_functions 301 rbch_driver_functions = { 302 rbch_rx_data_rdy, 303 rbch_tx_queue_empty, 304 rbch_activity, 305 rbch_connect, 306 rbch_disconnect, 307 rbch_dialresponse, 308 rbch_updown, 309 rbch_get_softc, 310 rbch_set_linktab, 311 NULL 312 }; 313 314 static int rbch_driver_id = -1; 315 316 /*---------------------------------------------------------------------------* 317 * interface attach routine 318 *---------------------------------------------------------------------------*/ 319 PDEVSTATIC void 320 #ifdef __FreeBSD__ 321 isdnbchanattach(void *dummy) 322 #else 323 isdnbchanattach() 324 #endif 325 { 326 int i; 327 328 rbch_driver_id = isdn_l4_driver_attach("isdnbchan", NISDNBCHAN, &rbch_driver_functions); 329 330 for(i=0; i < NISDNBCHAN; i++) 331 { 332 #if defined(__FreeBSD__) 333 #if __FreeBSD__ == 3 334 335 #ifdef DEVFS 336 rbch_softc[i].devfs_token = 337 devfs_add_devswf(&isdnbchan_cdevsw, i, DV_CHR, 338 UID_ROOT, GID_WHEEL, 0600, 339 "isdnbchan%d", i); 340 #endif 341 342 #else 343 make_dev(&isdnbchan_cdevsw, i, 344 UID_ROOT, GID_WHEEL, 0600, "isdnbchan%d", i); 345 #endif 346 #endif 347 348 #if I4BRBCHACCT 349 #if defined(__FreeBSD__) 350 callout_handle_init(&rbch_softc[i].sc_callout); 351 #endif 352 #if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000 353 callout_init(&rbch_softc[i].sc_callout); 354 #endif 355 rbch_softc[i].sc_fn = 1; 356 #endif 357 rbch_softc[i].sc_unit = i; 358 rbch_softc[i].sc_devstate = ST_IDLE; 359 rbch_softc[i].sc_hdlcq.ifq_maxlen = I4BRBCHMAXQLEN; 360 rbch_softc[i].it_in.c_ispeed = rbch_softc[i].it_in.c_ospeed = 64000; 361 termioschars(&rbch_softc[i].it_in); 362 } 363 } 364 365 /*---------------------------------------------------------------------------* 366 * open rbch device 367 *---------------------------------------------------------------------------*/ 368 PDEVSTATIC int 369 isdnbchanopen(dev_t dev, int flag, int fmt, 370 struct lwp *l) 371 { 372 int unit = minor(dev); 373 374 if(unit >= NISDNBCHAN) 375 return(ENXIO); 376 377 if(rbch_softc[unit].sc_devstate & ST_ISOPEN) 378 return(EBUSY); 379 380 #if 0 381 rbch_clrq(unit); 382 #endif 383 384 rbch_softc[unit].sc_devstate |= ST_ISOPEN; 385 386 NDBGL4(L4_RBCHDBG, "unit %d, open", unit); 387 388 return(0); 389 } 390 391 /*---------------------------------------------------------------------------* 392 * close rbch device 393 *---------------------------------------------------------------------------*/ 394 PDEVSTATIC int 395 isdnbchanclose(dev_t dev, int flag, int fmt, 396 struct lwp *l) 397 { 398 int unit = minor(dev); 399 struct rbch_softc *sc = &rbch_softc[unit]; 400 401 if(sc->sc_devstate & ST_CONNECTED) 402 i4b_l4_drvrdisc(sc->sc_cd->cdid); 403 404 sc->sc_devstate &= ~ST_ISOPEN; 405 406 rbch_clrq(sc); 407 408 NDBGL4(L4_RBCHDBG, "channel %d, closed", unit); 409 410 return(0); 411 } 412 413 /*---------------------------------------------------------------------------* 414 * read from rbch device 415 *---------------------------------------------------------------------------*/ 416 PDEVSTATIC int 417 isdnbchanread(dev_t dev, struct uio *uio, int ioflag) 418 { 419 struct mbuf *m; 420 int error = 0; 421 int unit = minor(dev); 422 struct ifqueue *iqp; 423 struct rbch_softc *sc = &rbch_softc[unit]; 424 425 int s; 426 427 NDBGL4(L4_RBCHDBG, "unit %d, enter read", unit); 428 429 s = splnet(); 430 if(!(sc->sc_devstate & ST_ISOPEN)) 431 { 432 splx(s); 433 NDBGL4(L4_RBCHDBG, "unit %d, read while not open", unit); 434 return(EIO); 435 } 436 437 if((sc->sc_devstate & ST_NOBLOCK)) 438 { 439 if(!(sc->sc_devstate & ST_CONNECTED)) { 440 splx(s); 441 return(EWOULDBLOCK); 442 } 443 444 if(sc->sc_bprot == BPROT_RHDLC) 445 iqp = &sc->sc_hdlcq; 446 else 447 iqp = sc->sc_ilt->rx_queue; 448 449 if(IF_QEMPTY(iqp) && (sc->sc_devstate & ST_ISOPEN)) { 450 splx(s); 451 return(EWOULDBLOCK); 452 } 453 } 454 else 455 { 456 while(!(sc->sc_devstate & ST_CONNECTED)) 457 { 458 NDBGL4(L4_RBCHDBG, "unit %d, wait read init", unit); 459 460 if((error = tsleep((caddr_t) &rbch_softc[unit], 461 TTIPRI | PCATCH, 462 "rrrbch", 0 )) != 0) 463 { 464 splx(s); 465 NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep", unit, error); 466 return(error); 467 } 468 } 469 470 if(sc->sc_bprot == BPROT_RHDLC) 471 iqp = &sc->sc_hdlcq; 472 else 473 iqp = sc->sc_ilt->rx_queue; 474 475 while(IF_QEMPTY(iqp) && (sc->sc_devstate & ST_ISOPEN)) 476 { 477 sc->sc_devstate |= ST_RDWAITDATA; 478 479 NDBGL4(L4_RBCHDBG, "unit %d, wait read data", unit); 480 481 if((error = tsleep((caddr_t) &sc->sc_ilt->rx_queue, 482 TTIPRI | PCATCH, 483 "rrbch", 0 )) != 0) 484 { 485 splx(s); 486 NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep read", unit, error); 487 sc->sc_devstate &= ~ST_RDWAITDATA; 488 return(error); 489 } else if (!(sc->sc_devstate & ST_CONNECTED)) { 490 splx(s); 491 return 0; 492 } 493 } 494 } 495 496 IF_DEQUEUE(iqp, m); 497 498 NDBGL4(L4_RBCHDBG, "unit %d, read %d bytes", unit, m->m_len); 499 500 if(m && m->m_len) 501 { 502 error = uiomove(m->m_data, m->m_len, uio); 503 } 504 else 505 { 506 NDBGL4(L4_RBCHDBG, "unit %d, error %d uiomove", unit, error); 507 error = EIO; 508 } 509 510 if(m) 511 i4b_Bfreembuf(m); 512 513 splx(s); 514 515 return(error); 516 } 517 518 /*---------------------------------------------------------------------------* 519 * write to rbch device 520 *---------------------------------------------------------------------------*/ 521 PDEVSTATIC int 522 isdnbchanwrite(dev_t dev, struct uio * uio, int ioflag) 523 { 524 struct mbuf *m; 525 int error = 0; 526 int unit = minor(dev); 527 struct rbch_softc *sc = &rbch_softc[unit]; 528 529 int s; 530 531 NDBGL4(L4_RBCHDBG, "unit %d, write", unit); 532 533 s = splnet(); 534 if(!(sc->sc_devstate & ST_ISOPEN)) 535 { 536 NDBGL4(L4_RBCHDBG, "unit %d, write while not open", unit); 537 splx(s); 538 return(EIO); 539 } 540 541 if((sc->sc_devstate & ST_NOBLOCK)) 542 { 543 if(!(sc->sc_devstate & ST_CONNECTED)) { 544 splx(s); 545 return(EWOULDBLOCK); 546 } 547 if(IF_QFULL(sc->sc_ilt->tx_queue) && (sc->sc_devstate & ST_ISOPEN)) { 548 splx(s); 549 return(EWOULDBLOCK); 550 } 551 } 552 else 553 { 554 while(!(sc->sc_devstate & ST_CONNECTED)) 555 { 556 NDBGL4(L4_RBCHDBG, "unit %d, write wait init", unit); 557 558 error = tsleep((caddr_t) &rbch_softc[unit], 559 TTIPRI | PCATCH, 560 "wrrbch", 0 ); 561 if(error == ERESTART) { 562 splx(s); 563 return (ERESTART); 564 } 565 else if(error == EINTR) 566 { 567 splx(s); 568 NDBGL4(L4_RBCHDBG, "unit %d, EINTR during wait init", unit); 569 return(EINTR); 570 } 571 else if(error) 572 { 573 splx(s); 574 NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep init", unit, error); 575 return(error); 576 } 577 tsleep((caddr_t) &rbch_softc[unit], TTIPRI | PCATCH, "xrbch", (hz*1)); 578 } 579 580 while(IF_QFULL(sc->sc_ilt->tx_queue) && (sc->sc_devstate & ST_ISOPEN)) 581 { 582 sc->sc_devstate |= ST_WRWAITEMPTY; 583 584 NDBGL4(L4_RBCHDBG, "unit %d, write queue full", unit); 585 586 if ((error = tsleep((caddr_t) &sc->sc_ilt->tx_queue, 587 TTIPRI | PCATCH, 588 "wrbch", 0)) != 0) { 589 sc->sc_devstate &= ~ST_WRWAITEMPTY; 590 if(error == ERESTART) 591 { 592 splx(s); 593 return(ERESTART); 594 } 595 else if(error == EINTR) 596 { 597 splx(s); 598 NDBGL4(L4_RBCHDBG, "unit %d, EINTR during wait write", unit); 599 return(error); 600 } 601 else if(error) 602 { 603 splx(s); 604 NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep write", unit, error); 605 return(error); 606 } 607 else if (!(sc->sc_devstate & ST_CONNECTED)) { 608 splx(s); 609 return 0; 610 } 611 } 612 } 613 } 614 615 if(!(sc->sc_devstate & ST_ISOPEN)) 616 { 617 NDBGL4(L4_RBCHDBG, "unit %d, not open anymore", unit); 618 splx(s); 619 return(EIO); 620 } 621 622 if((m = i4b_Bgetmbuf(BCH_MAX_DATALEN)) != NULL) 623 { 624 m->m_len = min(BCH_MAX_DATALEN, uio->uio_resid); 625 626 NDBGL4(L4_RBCHDBG, "unit %d, write %d bytes", unit, m->m_len); 627 628 error = uiomove(m->m_data, m->m_len, uio); 629 630 if(IF_QFULL(sc->sc_ilt->tx_queue)) 631 { 632 m_freem(m); 633 } 634 else 635 { 636 IF_ENQUEUE(sc->sc_ilt->tx_queue, m); 637 } 638 639 (*sc->sc_ilt->bchannel_driver->bch_tx_start)(sc->sc_ilt->l1token, sc->sc_ilt->channel); 640 } 641 642 splx(s); 643 644 return(error); 645 } 646 647 /*---------------------------------------------------------------------------* 648 * rbch device ioctl handlibg 649 *---------------------------------------------------------------------------*/ 650 PDEVSTATIC int 651 isdnbchanioctl(dev_t dev, IOCTL_CMD_T cmd, caddr_t data, int flag, 652 struct lwp *l) 653 { 654 int error = 0; 655 int unit = minor(dev); 656 struct rbch_softc *sc = &rbch_softc[unit]; 657 658 switch(cmd) 659 { 660 case FIOASYNC: /* Set async mode */ 661 if (*(int *)data) 662 { 663 NDBGL4(L4_RBCHDBG, "unit %d, setting async mode", unit); 664 } 665 else 666 { 667 NDBGL4(L4_RBCHDBG, "unit %d, clearing async mode", unit); 668 } 669 break; 670 671 case FIONBIO: 672 if (*(int *)data) 673 { 674 NDBGL4(L4_RBCHDBG, "unit %d, setting non-blocking mode", unit); 675 sc->sc_devstate |= ST_NOBLOCK; 676 } 677 else 678 { 679 NDBGL4(L4_RBCHDBG, "unit %d, clearing non-blocking mode", unit); 680 sc->sc_devstate &= ~ST_NOBLOCK; 681 } 682 break; 683 684 case TIOCCDTR: /* Clear DTR */ 685 if(sc->sc_devstate & ST_CONNECTED) 686 { 687 NDBGL4(L4_RBCHDBG, "unit %d, disconnecting for DTR down", unit); 688 i4b_l4_drvrdisc(sc->sc_cd->cdid); 689 } 690 break; 691 692 case I4B_RBCH_DIALOUT: 693 { 694 size_t x; 695 696 for (x = 0; x < TELNO_MAX && ((char *)data)[x]; x++) 697 ; 698 if (x) 699 { 700 NDBGL4(L4_RBCHDBG, "%d, attempting dialout to %s", unit, (char *)data); 701 i4b_l4_dialoutnumber(rbch_driver_id, unit, x, (char *)data); 702 break; 703 } 704 /* fall through to SDTR */ 705 } 706 707 case TIOCSDTR: /* Set DTR */ 708 NDBGL4(L4_RBCHDBG, "unit %d, attempting dialout (DTR)", unit); 709 i4b_l4_dialout(rbch_driver_id, unit); 710 break; 711 712 case TIOCSETA: /* Set termios struct */ 713 break; 714 715 case TIOCGETA: /* Get termios struct */ 716 *(struct termios *)data = sc->it_in; 717 break; 718 719 case TIOCMGET: 720 *(int *)data = TIOCM_LE|TIOCM_DTR|TIOCM_RTS|TIOCM_CTS|TIOCM_DSR; 721 if (sc->sc_devstate & ST_CONNECTED) 722 *(int *)data |= TIOCM_CD; 723 break; 724 725 case I4B_RBCH_VR_REQ: 726 { 727 msg_vr_req_t *mvr; 728 729 mvr = (msg_vr_req_t *)data; 730 731 mvr->version = VERSION; 732 mvr->release = REL; 733 mvr->step = STEP; 734 break; 735 } 736 737 default: /* Unknown stuff */ 738 NDBGL4(L4_RBCHDBG, "(minor=%d) ioctl, unknown cmd %lx", unit, (u_long)cmd); 739 error = EINVAL; 740 break; 741 } 742 return(error); 743 } 744 745 #ifdef OS_USES_POLL 746 747 /*---------------------------------------------------------------------------* 748 * device driver poll 749 *---------------------------------------------------------------------------*/ 750 PDEVSTATIC int 751 isdnbchanpoll(dev_t dev, int events, struct lwp *l) 752 { 753 int revents = 0; /* Events we found */ 754 int s; 755 int unit = minor(dev); 756 struct rbch_softc *sc = &rbch_softc[unit]; 757 758 /* We can't check for anything but IN or OUT */ 759 760 s = splhigh(); 761 762 if(!(sc->sc_devstate & ST_ISOPEN)) 763 { 764 splx(s); 765 return(POLLNVAL); 766 } 767 768 /* 769 * Writes are OK if we are connected and the 770 * transmit queue can take them 771 */ 772 773 if((events & (POLLOUT|POLLWRNORM)) && 774 (sc->sc_devstate & ST_CONNECTED) && 775 !IF_QFULL(sc->sc_ilt->tx_queue)) 776 { 777 revents |= (events & (POLLOUT|POLLWRNORM)); 778 } 779 780 /* ... while reads are OK if we have any data */ 781 782 if((events & (POLLIN|POLLRDNORM)) && 783 (sc->sc_devstate & ST_CONNECTED)) 784 { 785 struct ifqueue *iqp; 786 787 if(sc->sc_bprot == BPROT_RHDLC) 788 iqp = &sc->sc_hdlcq; 789 else 790 iqp = sc->sc_ilt->rx_queue; 791 792 if(!IF_QEMPTY(iqp)) 793 revents |= (events & (POLLIN|POLLRDNORM)); 794 } 795 796 if(revents == 0) 797 selrecord(l, &sc->selp); 798 799 splx(s); 800 return(revents); 801 } 802 803 static void 804 filt_i4brbchdetach(struct knote *kn) 805 { 806 struct rbch_softc *sc = kn->kn_hook; 807 int s; 808 809 s = splhigh(); 810 SLIST_REMOVE(&sc->selp.sel_klist, kn, knote, kn_selnext); 811 splx(s); 812 } 813 814 static int 815 filt_i4brbchread(struct knote *kn, long hint) 816 { 817 struct rbch_softc *sc = kn->kn_hook; 818 struct ifqueue *iqp; 819 820 if ((sc->sc_devstate & ST_CONNECTED) == 0) 821 return (0); 822 823 if (sc->sc_bprot == BPROT_RHDLC) 824 iqp = &sc->sc_hdlcq; 825 else 826 iqp = sc->sc_ilt->rx_queue; 827 828 if (IF_QEMPTY(iqp)) 829 return (0); 830 831 kn->kn_data = 0; /* XXXLUKEM (thorpej): what to put here? */ 832 return (1); 833 } 834 835 static const struct filterops i4brbchread_filtops = 836 { 1, NULL, filt_i4brbchdetach, filt_i4brbchread }; 837 838 static int 839 filt_i4brbchwrite(struct knote *kn, long hint) 840 { 841 struct rbch_softc *sc = kn->kn_hook; 842 843 if ((sc->sc_devstate & ST_CONNECTED) == 0) 844 return (0); 845 846 if (IF_QFULL(sc->sc_ilt->tx_queue)) 847 return (0); 848 849 kn->kn_data = 0; /* XXXLUKEM (thorpej): what to put here? */ 850 return (1); 851 } 852 853 static const struct filterops i4brbchwrite_filtops = 854 { 1, NULL, filt_i4brbchdetach, filt_i4brbchwrite }; 855 856 int 857 isdnbchankqfilter(dev_t dev, struct knote *kn) 858 { 859 struct rbch_softc *sc = &rbch_softc[minor(dev)]; 860 struct klist *klist; 861 int s; 862 863 switch (kn->kn_filter) { 864 case EVFILT_READ: 865 klist = &sc->selp.sel_klist; 866 kn->kn_fop = &i4brbchread_filtops; 867 break; 868 869 case EVFILT_WRITE: 870 klist = &sc->selp.sel_klist; 871 kn->kn_fop = &i4brbchwrite_filtops; 872 break; 873 874 default: 875 return (1); 876 } 877 878 kn->kn_hook = sc; 879 880 s = splhigh(); 881 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 882 splx(s); 883 884 return (0); 885 } 886 887 #else /* OS_USES_POLL */ 888 889 /*---------------------------------------------------------------------------* 890 * device driver select 891 *---------------------------------------------------------------------------*/ 892 PDEVSTATIC int 893 isdnbchanselect(dev_t dev, int rw, struct lwp *l) 894 { 895 int unit = minor(dev); 896 struct rbch_softc *sc = &rbch_softc[unit]; 897 int s; 898 899 s = splhigh(); 900 901 if(!(sc->sc_devstate & ST_ISOPEN)) 902 { 903 splx(s); 904 NDBGL4(L4_RBCHDBG, "(minor=%d) not open anymore", unit); 905 return(1); 906 } 907 908 if(sc->sc_devstate & ST_CONNECTED) 909 { 910 struct ifqueue *iqp; 911 912 switch(rw) 913 { 914 case FREAD: 915 if(sc->sc_bprot == BPROT_RHDLC) 916 iqp = &sc->sc_hdlcq; 917 else 918 iqp = isdn_linktab[unit]->rx_queue; 919 920 if(!IF_QEMPTY(iqp)) 921 { 922 splx(s); 923 return(1); 924 } 925 break; 926 927 case FWRITE: 928 if(!IF_QFULL(isdn_linktab[unit]->rx_queue)) 929 { 930 splx(s); 931 return(1); 932 } 933 break; 934 935 default: 936 splx(s); 937 return 0; 938 } 939 } 940 selrecord(l, &sc->selp); 941 splx(s); 942 return(0); 943 } 944 945 #endif /* OS_USES_POLL */ 946 947 #if I4BRBCHACCT 948 /*---------------------------------------------------------------------------* 949 * watchdog routine 950 *---------------------------------------------------------------------------*/ 951 static void 952 rbch_timeout(struct rbch_softc *sc) 953 { 954 bchan_statistics_t bs; 955 956 /* get # of bytes in and out from the HSCX driver */ 957 958 (*sc->sc_ilt->bchannel_driver->bch_stat) 959 (sc->sc_ilt->l1token, sc->sc_ilt->channel, &bs); 960 961 sc->sc_ioutb += bs.outbytes; 962 sc->sc_iinb += bs.inbytes; 963 964 if((sc->sc_iinb != sc->sc_linb) || (sc->sc_ioutb != sc->sc_loutb) || sc->sc_fn) 965 { 966 int ri = (sc->sc_iinb - sc->sc_linb)/I4BRBCHACCTINTVL; 967 int ro = (sc->sc_ioutb - sc->sc_loutb)/I4BRBCHACCTINTVL; 968 969 if((sc->sc_iinb == sc->sc_linb) && (sc->sc_ioutb == sc->sc_loutb)) 970 sc->sc_fn = 0; 971 else 972 sc->sc_fn = 1; 973 974 sc->sc_linb = sc->sc_iinb; 975 sc->sc_loutb = sc->sc_ioutb; 976 977 if (sc->sc_cd) 978 i4b_l4_accounting(sc->sc_cd->cdid, ACCT_DURING, 979 sc->sc_ioutb, sc->sc_iinb, ro, ri, sc->sc_ioutb, sc->sc_iinb); 980 } 981 START_TIMER(sc->sc_callout, rbch_timeout, sc, I4BRBCHACCTINTVL*hz); 982 } 983 #endif /* I4BRBCHACCT */ 984 985 /*===========================================================================* 986 * ISDN INTERFACE ROUTINES 987 *===========================================================================*/ 988 989 /*---------------------------------------------------------------------------* 990 * this routine is called from L4 handler at connect time 991 *---------------------------------------------------------------------------*/ 992 static void 993 rbch_connect(void *softc, void *cdp) 994 { 995 call_desc_t *cd = (call_desc_t *)cdp; 996 struct rbch_softc *sc = softc; 997 998 sc->sc_bprot = cd->bprot; 999 1000 #if I4BRBCHACCT 1001 if(sc->sc_bprot == BPROT_RHDLC) 1002 { 1003 sc->sc_iinb = 0; 1004 sc->sc_ioutb = 0; 1005 sc->sc_linb = 0; 1006 sc->sc_loutb = 0; 1007 1008 START_TIMER(sc->sc_callout, rbch_timeout, sc, I4BRBCHACCTINTVL*hz); 1009 } 1010 #endif 1011 if(!(sc->sc_devstate & ST_CONNECTED)) 1012 { 1013 NDBGL4(L4_RBCHDBG, "B channel %d at ISDN %d, wakeup", 1014 cd->channelid, cd->isdnif); 1015 sc->sc_devstate |= ST_CONNECTED; 1016 sc->sc_cd = cdp; 1017 wakeup((caddr_t)sc); 1018 selwakeup(&sc->selp); 1019 } 1020 } 1021 1022 /*---------------------------------------------------------------------------* 1023 * this routine is called from L4 handler at disconnect time 1024 *---------------------------------------------------------------------------*/ 1025 static void 1026 rbch_disconnect(void *softc, void *cdp) 1027 { 1028 call_desc_t *cd = cdp; 1029 struct rbch_softc *sc = softc; 1030 1031 int s; 1032 1033 if(cd != sc->sc_cd) 1034 { 1035 NDBGL4(L4_RBCHDBG, "B channel %d at ISDN %d not active", 1036 cd->channelid, cd->isdnif); 1037 return; 1038 } 1039 1040 s = splnet(); 1041 1042 NDBGL4(L4_RBCHDBG, "B channel %d at ISDN %d disconnect", 1043 cd->channelid, cd->isdnif); 1044 1045 sc->sc_devstate &= ~ST_CONNECTED; 1046 1047 #if I4BRBCHACCT 1048 if (sc->sc_cd) 1049 i4b_l4_accounting(sc->sc_cd->cdid, ACCT_FINAL, 1050 sc->sc_ioutb, sc->sc_iinb, 0, 0, sc->sc_ioutb, sc->sc_iinb); 1051 1052 STOP_TIMER(sc->sc_callout, rbch_timeout, sc); 1053 #endif 1054 1055 sc->sc_cd = NULL; 1056 if (sc->sc_devstate & ST_RDWAITDATA) 1057 wakeup(&sc->sc_ilt->rx_queue); 1058 if (sc->sc_devstate & ST_WRWAITEMPTY) 1059 wakeup(&sc->sc_ilt->tx_queue); 1060 1061 splx(s); 1062 1063 selwakeup(&sc->selp); 1064 } 1065 1066 /*---------------------------------------------------------------------------* 1067 * feedback from daemon in case of dial problems 1068 *---------------------------------------------------------------------------*/ 1069 static void 1070 rbch_dialresponse(void *softc, int status, 1071 cause_t cause) 1072 { 1073 } 1074 1075 /*---------------------------------------------------------------------------* 1076 * interface up/down 1077 *---------------------------------------------------------------------------*/ 1078 static void 1079 rbch_updown(void *softc, int updown) 1080 { 1081 } 1082 1083 /*---------------------------------------------------------------------------* 1084 * this routine is called from the HSCX interrupt handler 1085 * when a new frame (mbuf) has been received and is to be put on 1086 * the rx queue. 1087 *---------------------------------------------------------------------------*/ 1088 static void 1089 rbch_rx_data_rdy(void *softc) 1090 { 1091 struct rbch_softc *sc = softc; 1092 1093 if(sc->sc_bprot == BPROT_RHDLC) 1094 { 1095 register struct mbuf *m; 1096 1097 if((m = *sc->sc_ilt->rx_mbuf) == NULL) 1098 return; 1099 1100 m->m_pkthdr.len = m->m_len; 1101 1102 if(IF_QFULL(&sc->sc_hdlcq)) 1103 { 1104 NDBGL4(L4_RBCHDBG, "(minor=%d) hdlc rx queue full!", sc->sc_unit); 1105 m_freem(m); 1106 } 1107 else 1108 { 1109 IF_ENQUEUE(&sc->sc_hdlcq, m); 1110 } 1111 } 1112 1113 if(sc->sc_devstate & ST_RDWAITDATA) 1114 { 1115 NDBGL4(L4_RBCHDBG, "(minor=%d) wakeup", sc->sc_unit); 1116 sc->sc_devstate &= ~ST_RDWAITDATA; 1117 wakeup((caddr_t) &sc->sc_ilt->rx_queue); 1118 } 1119 else 1120 { 1121 NDBGL4(L4_RBCHDBG, "(minor=%d) NO wakeup", sc->sc_unit); 1122 } 1123 selnotify(&sc->selp, 0); 1124 } 1125 1126 /*---------------------------------------------------------------------------* 1127 * this routine is called from the HSCX interrupt handler 1128 * when the last frame has been sent out and there is no 1129 * further frame (mbuf) in the tx queue. 1130 *---------------------------------------------------------------------------*/ 1131 static void 1132 rbch_tx_queue_empty(void *softc) 1133 { 1134 struct rbch_softc *sc = softc; 1135 1136 if(sc->sc_devstate & ST_WRWAITEMPTY) 1137 { 1138 NDBGL4(L4_RBCHDBG, "(minor=%d): wakeup", sc->sc_unit); 1139 sc->sc_devstate &= ~ST_WRWAITEMPTY; 1140 wakeup((caddr_t) &sc->sc_ilt->tx_queue); 1141 } 1142 else 1143 { 1144 NDBGL4(L4_RBCHDBG, "(minor=%d) NO wakeup", sc->sc_unit); 1145 } 1146 selnotify(&sc->selp, 0); 1147 } 1148 1149 /*---------------------------------------------------------------------------* 1150 * this routine is called from the HSCX interrupt handler 1151 * each time a packet is received or transmitted 1152 *---------------------------------------------------------------------------*/ 1153 static void 1154 rbch_activity(void *softc, int rxtx) 1155 { 1156 struct rbch_softc *sc = softc; 1157 1158 if (sc->sc_cd) 1159 sc->sc_cd->last_active_time = SECOND; 1160 selnotify(&sc->selp, 0); 1161 } 1162 1163 /*---------------------------------------------------------------------------* 1164 * clear an hdlc rx queue for a rbch unit 1165 *---------------------------------------------------------------------------*/ 1166 static void 1167 rbch_clrq(void *softc) 1168 { 1169 struct rbch_softc *sc = softc; 1170 struct mbuf *m; 1171 int s; 1172 1173 for(;;) 1174 { 1175 s = splnet(); 1176 IF_DEQUEUE(&sc->sc_hdlcq, m); 1177 splx(s); 1178 1179 if(m) 1180 m_freem(m); 1181 else 1182 break; 1183 } 1184 } 1185 1186 /*---------------------------------------------------------------------------* 1187 * setup the isdn_linktab for this driver 1188 *---------------------------------------------------------------------------*/ 1189 static void 1190 rbch_set_linktab(void *softc, isdn_link_t *ilt) 1191 { 1192 struct rbch_softc *sc = softc; 1193 sc->sc_ilt = ilt; 1194 } 1195 1196 /*---------------------------------------------------------------------------* 1197 * initialize this drivers linktab 1198 *---------------------------------------------------------------------------*/ 1199 static void* 1200 rbch_get_softc(int unit) 1201 { 1202 return &rbch_softc[unit]; 1203 } 1204 1205 /*===========================================================================*/ 1206 1207 #endif /* NISDNBCHAN > 0 */
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