117};
118
119typedef struct _cx_dma_mem_t {
120 unsigned long phys;
121 void *virt;
122 size_t size;
123 bus_dma_tag_t dmat;
124 bus_dmamap_t mapp;
125} cx_dma_mem_t;
126
127typedef struct _drv_t {
128 char name [8];
129 cx_chan_t *chan;
130 cx_board_t *board;
131 cx_dma_mem_t dmamem;
132 struct tty *tty;
133 struct callout dcd_timeout_handle;
134 unsigned callout;
135 unsigned lock;
136 int open_dev;
137 int cd;
138 int running;
139#ifdef NETGRAPH
140 char nodename [NG_NODESIZ];
141 hook_p hook;
142 hook_p debug_hook;
143 node_p node;
144 struct ifqueue lo_queue;
145 struct ifqueue hi_queue;
146#else
147 struct ifqueue queue;
148 struct ifnet *ifp;
149#endif
150 short timeout;
151 struct callout timeout_handle;
152 struct cdev *devt;
153 async_q aqueue;
154#define CX_READ 1
155#define CX_WRITE 2
156 int intr_action;
157 short atimeout;
158} drv_t;
159
160typedef struct _bdrv_t {
161 cx_board_t *board;
162 struct resource *base_res;
163 struct resource *drq_res;
164 struct resource *irq_res;
165 int base_rid;
166 int drq_rid;
167 int irq_rid;
168 void *intrhand;
169 drv_t channel [NCHAN];
170 struct mtx cx_mtx;
171} bdrv_t;
172
173static driver_t cx_isa_driver = {
174 "cx",
175 cx_isa_methods,
176 sizeof (bdrv_t),
177};
178
179static devclass_t cx_devclass;
180
181extern long csigma_fw_len;
182extern const char *csigma_fw_version;
183extern const char *csigma_fw_date;
184extern const char *csigma_fw_copyright;
185extern const cr_dat_tst_t csigma_fw_tvec[];
186extern const u_char csigma_fw_data[];
187static void cx_oproc (struct tty *tp);
188static int cx_param (struct tty *tp, struct termios *t);
189static void cx_stop (struct tty *tp, int flag);
190static void cx_receive (cx_chan_t *c, char *data, int len);
191static void cx_transmit (cx_chan_t *c, void *attachment, int len);
192static void cx_error (cx_chan_t *c, int data);
193static void cx_modem (cx_chan_t *c);
194static void cx_up (drv_t *d);
195static void cx_start (drv_t *d);
196static void cx_softintr (void *);
197static void *cx_fast_ih;
198static void cx_down (drv_t *d);
199static void cx_watchdog (drv_t *d);
200static void cx_watchdog_timer (void *arg);
201static void cx_carrier (void *arg);
202
203#ifdef NETGRAPH
204extern struct ng_type typestruct;
205#else
206static void cx_ifstart (struct ifnet *ifp);
207static void cx_tlf (struct sppp *sp);
208static void cx_tls (struct sppp *sp);
209static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data);
210static void cx_initialize (void *softc);
211#endif
212
213static cx_board_t *adapter [NCX];
214static drv_t *channel [NCX*NCHAN];
215static struct callout led_timo [NCX];
216static struct callout timeout_handle;
217
218static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td);
219static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td);
220static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td);
221static struct cdevsw cx_cdevsw = {
222 .d_version = D_VERSION,
223 .d_open = cx_open,
224 .d_close = cx_close,
225 .d_ioctl = cx_ioctl,
226 .d_name = "cx",
227 .d_flags = D_TTY,
228};
229
230static int MY_SOFT_INTR;
231
232/*
233 * Print the mbuf chain, for debug purposes only.
234 */
235static void printmbuf (struct mbuf *m)
236{
237 printf ("mbuf:");
238 for (; m; m=m->m_next) {
239 if (m->m_flags & M_PKTHDR)
240 printf (" HDR %d:", m->m_pkthdr.len);
241 if (m->m_flags & M_EXT)
242 printf (" EXT:");
243 printf (" %d", m->m_len);
244 }
245 printf ("\n");
246}
247
248/*
249 * Make an mbuf from data.
250 */
251static struct mbuf *makembuf (void *buf, u_int len)
252{
253 struct mbuf *m, *o, *p;
254
255 MGETHDR (m, M_NOWAIT, MT_DATA);
256
257 if (! m)
258 return 0;
259
260 if (len >= MINCLSIZE)
261 MCLGET (m, M_NOWAIT);
262
263 m->m_pkthdr.len = len;
264 m->m_len = 0;
265
266 p = m;
267 while (len) {
268 u_int n = M_TRAILINGSPACE (p);
269 if (n > len)
270 n = len;
271 if (! n) {
272 /* Allocate new mbuf. */
273 o = p;
274 MGET (p, M_NOWAIT, MT_DATA);
275 if (! p) {
276 m_freem (m);
277 return 0;
278 }
279 if (len >= MINCLSIZE)
280 MCLGET (p, M_NOWAIT);
281 p->m_len = 0;
282 o->m_next = p;
283
284 n = M_TRAILINGSPACE (p);
285 if (n > len)
286 n = len;
287 }
288 bcopy (buf, mtod (p, caddr_t) + p->m_len, n);
289
290 p->m_len += n;
291 buf = n + (char*) buf;
292 len -= n;
293 }
294 return m;
295}
296
297/*
298 * Recover after lost transmit interrupts.
299 */
300static void cx_timeout (void *arg)
301{
302 drv_t *d;
303 int s, i, k;
304
305 for (i = 0; i < NCX; i++) {
306 if (adapter[i] == NULL)
307 continue;
308 for (k = 0; k < NCHAN; ++k) {
309 d = channel[i * NCHAN + k];
310 if (! d)
311 continue;
312 s = splhigh ();
313 CX_LOCK ((bdrv_t *)d->board->sys);
314 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) {
315 d->tty->t_state &= ~TS_BUSY;
316 if (d->tty->t_dev) {
317 d->intr_action |= CX_WRITE;
318 MY_SOFT_INTR = 1;
319 swi_sched (cx_fast_ih, 0);
320 }
321 CX_DEBUG (d, ("cx_timeout\n"));
322 }
323 if (d->atimeout)
324 d->atimeout--;
325 CX_UNLOCK ((bdrv_t *)d->board->sys);
326 splx (s);
327 }
328 }
329 callout_reset (&timeout_handle, hz*5, cx_timeout, 0);
330}
331
332static void cx_led_off (void *arg)
333{
334 cx_board_t *b = arg;
335 bdrv_t *bd = b->sys;
336 int s;
337
338 s = splhigh ();
339 CX_LOCK (bd);
340 cx_led (b, 0);
341 CX_UNLOCK (bd);
342 splx (s);
343}
344
345/*
346 * Activate interrupt handler from DDK.
347 */
348static void cx_intr (void *arg)
349{
350 bdrv_t *bd = arg;
351 cx_board_t *b = bd->board;
352#ifndef NETGRAPH
353 int i;
354#endif
355 int s = splhigh ();
356
357 CX_LOCK (bd);
358 /* Turn LED on. */
359 cx_led (b, 1);
360
361 cx_int_handler (b);
362
363 /* Turn LED off 50 msec later. */
364 callout_reset (&led_timo[b->num], hz/20, cx_led_off, b);
365 CX_UNLOCK (bd);
366 splx (s);
367
368#ifndef NETGRAPH
369 /* Pass packets in a lock-free state */
370 for (i = 0; i < NCHAN && b->chan[i].type; i++) {
371 drv_t *d = b->chan[i].sys;
372 struct mbuf *m;
373 if (!d || !d->running)
374 continue;
375 while (_IF_QLEN(&d->queue)) {
376 IF_DEQUEUE (&d->queue,m);
377 if (!m)
378 continue;
379 sppp_input (d->ifp, m);
380 }
381 }
382#endif
383}
384
385static int probe_irq (cx_board_t *b, int irq)
386{
387 int mask, busy, cnt;
388
389 /* Clear pending irq, if any. */
390 cx_probe_irq (b, -irq);
391 DELAY (100);
392 for (cnt=0; cnt<5; ++cnt) {
393 /* Get the mask of pending irqs, assuming they are busy.
394 * Activate the adapter on given irq. */
395 busy = cx_probe_irq (b, irq);
396 DELAY (100);
397
398 /* Get the mask of active irqs.
399 * Deactivate our irq. */
400 mask = cx_probe_irq (b, -irq);
401 DELAY (100);
402 if ((mask & ~busy) == 1 << irq) {
403 cx_probe_irq (b, 0);
404 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n",
405 b->num, irq, mask, busy); */
406 return 1;
407 }
408 }
409 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n",
410 b->num, irq, mask, busy); */
411 cx_probe_irq (b, 0);
412 return 0;
413}
414
415static short porttab [] = {
416 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
417 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
418};
419static char dmatab [] = { 7, 6, 5, 0 };
420static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 };
421
422static int cx_is_free_res (device_t dev, int rid, int type, u_long start,
423 u_long end, u_long count)
424{
425 struct resource *res;
426
427 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count,
428 RF_ALLOCATED)))
429 return 0;
430
431 bus_release_resource (dev, type, rid, res);
432
433 return 1;
434}
435
436static void cx_identify (driver_t *driver, device_t dev)
437{
438 u_long iobase, rescount;
439 int devcount;
440 device_t *devices;
441 device_t child;
442 devclass_t my_devclass;
443 int i, k;
444
445 if ((my_devclass = devclass_find ("cx")) == NULL)
446 return;
447
448 devclass_get_devices (my_devclass, &devices, &devcount);
449
450 if (devcount == 0) {
451 /* We should find all devices by our self. We could alter other
452 * devices, but we don't have a choise
453 */
454 for (i = 0; (iobase = porttab [i]) != 0; i++) {
455 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
456 iobase, iobase + NPORT, NPORT))
457 continue;
458 if (cx_probe_board (iobase, -1, -1) == 0)
459 continue;
460
461 devcount++;
462
463 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx",
464 -1);
465
466 if (child == NULL)
467 return;
468
469 device_set_desc_copy (child, "Cronyx Sigma");
470 device_set_driver (child, driver);
471 bus_set_resource (child, SYS_RES_IOPORT, 0,
472 iobase, NPORT);
473
474 if (devcount >= NCX)
475 break;
476 }
477 } else {
478 static short porttab [] = {
479 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
480 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
481 };
482 /* Lets check user choise.
483 */
484 for (k = 0; k < devcount; k++) {
485 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
486 &iobase, &rescount) != 0)
487 continue;
488
489 for (i = 0; porttab [i] != 0; i++) {
490 if (porttab [i] != iobase)
491 continue;
492 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
493 iobase, iobase + NPORT, NPORT))
494 continue;
495 if (cx_probe_board (iobase, -1, -1) == 0)
496 continue;
497 porttab [i] = -1;
498 device_set_desc_copy (devices[k], "Cronyx Sigma");
499 break;
500 }
501
502 if (porttab [i] == 0) {
503 device_delete_child (
504 device_get_parent (devices[k]),
505 devices [k]);
506 devices[k] = 0;
507 continue;
508 }
509 }
510 for (k = 0; k < devcount; k++) {
511 if (devices[k] == 0)
512 continue;
513 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
514 &iobase, &rescount) == 0)
515 continue;
516 for (i = 0; (iobase = porttab [i]) != 0; i++) {
517 if (porttab [i] == -1) {
518 continue;
519 }
520 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
521 iobase, iobase + NPORT, NPORT))
522 continue;
523 if (cx_probe_board (iobase, -1, -1) == 0)
524 continue;
525
526 bus_set_resource (devices[k], SYS_RES_IOPORT, 0,
527 iobase, NPORT);
528 porttab [i] = -1;
529 device_set_desc_copy (devices[k], "Cronyx Sigma");
530 break;
531 }
532 if (porttab [i] == 0) {
533 device_delete_child (
534 device_get_parent (devices[k]),
535 devices [k]);
536 }
537 }
538 free (devices, M_TEMP);
539 }
540
541 return;
542}
543
544static int cx_probe (device_t dev)
545{
546 int unit = device_get_unit (dev);
547 int i;
548 u_long iobase, rescount;
549
550 if (!device_get_desc (dev) ||
551 strcmp (device_get_desc (dev), "Cronyx Sigma"))
552 return ENXIO;
553
554 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) {
555 printf ("cx%d: Couldn't get IOPORT\n", unit);
556 return ENXIO;
557 }
558
559 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
560 iobase, iobase + NPORT, NPORT)) {
561 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase);
562 return ENXIO;
563 }
564
565 for (i = 0; porttab [i] != 0; i++) {
566 if (porttab [i] == iobase) {
567 porttab [i] = -1;
568 break;
569 }
570 }
571
572 if (porttab [i] == 0) {
573 return ENXIO;
574 }
575
576 if (!cx_probe_board (iobase, -1, -1)) {
577 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase);
578 return ENXIO;
579 }
580
581 return 0;
582}
583
584static void
585cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error)
586{
587 unsigned long *addr;
588
589 if (error)
590 return;
591
592 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
593 addr = arg;
594 *addr = segs->ds_addr;
595}
596
597static int
598cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem)
599{
600 int error;
601
602 error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT,
603 BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1,
604 dmem->size, 0, NULL, NULL, &dmem->dmat);
605 if (error) {
606 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
607 else printf ("cx%d: ", bnum);
608 printf ("couldn't allocate tag for dma memory\n");
609 return 0;
610 }
611 error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt,
612 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp);
613 if (error) {
614 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
615 else printf ("cx%d: ", bnum);
616 printf ("couldn't allocate mem for dma memory\n");
617 bus_dma_tag_destroy (dmem->dmat);
618 return 0;
619 }
620 error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt,
621 dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0);
622 if (error) {
623 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
624 else printf ("cx%d: ", bnum);
625 printf ("couldn't load mem map for dma memory\n");
626 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
627 bus_dma_tag_destroy (dmem->dmat);
628 return 0;
629 }
630 return 1;
631}
632
633static void
634cx_bus_dma_mem_free (cx_dma_mem_t *dmem)
635{
636 bus_dmamap_unload (dmem->dmat, dmem->mapp);
637 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
638 bus_dma_tag_destroy (dmem->dmat);
639}
640
641/*
642 * The adapter is present, initialize the driver structures.
643 */
644static int cx_attach (device_t dev)
645{
646 bdrv_t *bd = device_get_softc (dev);
647 u_long iobase, drq, irq, rescount;
648 int unit = device_get_unit (dev);
649 char *cx_ln = CX_LOCK_NAME;
650 cx_board_t *b;
651 cx_chan_t *c;
652 drv_t *d;
653 int i;
654 int s;
655
656 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit));
657
658 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount);
659 bd->base_rid = 0;
660 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid,
661 iobase, iobase + NPORT, NPORT, RF_ACTIVE);
662 if (! bd->base_res) {
663 printf ("cx%d: cannot allocate base address\n", unit);
664 return ENXIO;
665 }
666
667 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) {
668 for (i = 0; (drq = dmatab [i]) != 0; i++) {
669 if (!cx_is_free_res (dev, 0, SYS_RES_DRQ,
670 drq, drq + 1, 1))
671 continue;
672 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1);
673 break;
674 }
675
676 if (dmatab[i] == 0) {
677 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
678 bd->base_res);
679 printf ("cx%d: Couldn't get DRQ\n", unit);
680 return ENXIO;
681 }
682 }
683
684 bd->drq_rid = 0;
685 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid,
686 drq, drq + 1, 1, RF_ACTIVE);
687 if (! bd->drq_res) {
688 printf ("cx%d: cannot allocate drq\n", unit);
689 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
690 bd->base_res);
691 return ENXIO;
692 }
693
694 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) {
695 for (i = 0; (irq = irqtab [i]) != 0; i++) {
696 if (!cx_is_free_res (dev, 0, SYS_RES_IRQ,
697 irq, irq + 1, 1))
698 continue;
699 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1);
700 break;
701 }
702
703 if (irqtab[i] == 0) {
704 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
705 bd->drq_res);
706 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
707 bd->base_res);
708 printf ("cx%d: Couldn't get IRQ\n", unit);
709 return ENXIO;
710 }
711 }
712
713 bd->irq_rid = 0;
714 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid,
715 irq, irq + 1, 1, RF_ACTIVE);
716 if (! bd->irq_res) {
717 printf ("cx%d: Couldn't allocate irq\n", unit);
718 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
719 bd->drq_res);
720 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
721 bd->base_res);
722 return ENXIO;
723 }
724
725 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK);
726 if (!b) {
727 printf ("cx:%d: Couldn't allocate memory\n", unit);
728 return (ENXIO);
729 }
730 adapter[unit] = b;
731 bzero (b, sizeof(cx_board_t));
732
733 if (! cx_open_board (b, unit, iobase, irq, drq)) {
734 printf ("cx%d: error loading firmware\n", unit);
735 free (b, M_DEVBUF);
736 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
737 bd->irq_res);
738 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
739 bd->drq_res);
740 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
741 bd->base_res);
742 return ENXIO;
743 }
744
745 bd->board = b;
746
747 cx_ln[2] = '0' + unit;
748 mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE);
749 if (! probe_irq (b, irq)) {
750 printf ("cx%d: irq %ld not functional\n", unit, irq);
751 bd->board = 0;
752 adapter [unit] = 0;
753 mtx_destroy (&bd->cx_mtx);
754 free (b, M_DEVBUF);
755 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
756 bd->irq_res);
757 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
758 bd->drq_res);
759 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
760 bd->base_res);
761 return ENXIO;
762 }
763 b->sys = bd;
764 callout_init (&led_timo[b->num], CALLOUT_MPSAFE);
765 s = splhigh ();
766 if (bus_setup_intr (dev, bd->irq_res,
767 INTR_TYPE_NET|INTR_MPSAFE,
768 NULL, cx_intr, bd, &bd->intrhand)) {
769 printf ("cx%d: Can't setup irq %ld\n", unit, irq);
770 bd->board = 0;
771 b->sys = 0;
772 adapter [unit] = 0;
773 mtx_destroy (&bd->cx_mtx);
774 free (b, M_DEVBUF);
775 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
776 bd->irq_res);
777 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
778 bd->drq_res);
779 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
780 bd->base_res);
781 splx (s);
782 return ENXIO;
783 }
784
785 CX_LOCK (bd);
786 cx_init (b, b->num, b->port, irq, drq);
787 cx_setup_board (b, 0, 0, 0);
788 CX_UNLOCK (bd);
789
790 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name);
791
792 for (c=b->chan; c<b->chan+NCHAN; ++c) {
793 if (c->type == T_NONE)
794 continue;
795 d = &bd->channel[c->num];
796 d->dmamem.size = sizeof(cx_buf_t);
797 if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem))
798 continue;
799 d->board = b;
800 d->chan = c;
801 d->open_dev = 0;
802 c->sys = d;
803 channel [b->num*NCHAN + c->num] = d;
804 sprintf (d->name, "cx%d.%d", b->num, c->num);
805
806 switch (c->type) {
807 case T_SYNC_RS232:
808 case T_SYNC_V35:
809 case T_SYNC_RS449:
810 case T_UNIV:
811 case T_UNIV_RS232:
812 case T_UNIV_RS449:
813 case T_UNIV_V35:
814 callout_init (&d->timeout_handle, CALLOUT_MPSAFE);
815#ifdef NETGRAPH
816 if (ng_make_node_common (&typestruct, &d->node) != 0) {
817 printf ("%s: cannot make common node\n", d->name);
818 channel [b->num*NCHAN + c->num] = 0;
819 c->sys = 0;
820 cx_bus_dma_mem_free (&d->dmamem);
821 continue;
822 }
823 NG_NODE_SET_PRIVATE (d->node, d);
824 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE,
825 c->board->num*NCHAN + c->num);
826 if (ng_name_node (d->node, d->nodename)) {
827 printf ("%s: cannot name node\n", d->nodename);
828 NG_NODE_UNREF (d->node);
829 channel [b->num*NCHAN + c->num] = 0;
830 c->sys = 0;
831 cx_bus_dma_mem_free (&d->dmamem);
832 continue;
833 }
834 d->lo_queue.ifq_maxlen = ifqmaxlen;
835 d->hi_queue.ifq_maxlen = ifqmaxlen;
836 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF);
837 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF);
838#else /*NETGRAPH*/
839 d->ifp = if_alloc(IFT_PPP);
840 if (d->ifp == NULL) {
841 printf ("%s: cannot if_alloc() common interface\n",
842 d->name);
843 channel [b->num*NCHAN + c->num] = 0;
844 c->sys = 0;
845 cx_bus_dma_mem_free (&d->dmamem);
846 continue;
847 }
848 d->ifp->if_softc = d;
849 if_initname (d->ifp, "cx", b->num * NCHAN + c->num);
850 d->ifp->if_mtu = PP_MTU;
851 d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
852 d->ifp->if_ioctl = cx_sioctl;
853 d->ifp->if_start = cx_ifstart;
854 d->ifp->if_init = cx_initialize;
855 d->queue.ifq_maxlen = 2;
856 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF);
857 sppp_attach (d->ifp);
858 if_attach (d->ifp);
859 IFP2SP(d->ifp)->pp_tlf = cx_tlf;
860 IFP2SP(d->ifp)->pp_tls = cx_tls;
861 /* If BPF is in the kernel, call the attach for it.
862 * Size of PPP header is 4 bytes. */
863 bpfattach (d->ifp, DLT_PPP, 4);
864#endif /*NETGRAPH*/
865 }
866 d->tty = ttyalloc ();
867 d->tty->t_open = cx_topen;
868 d->tty->t_close = cx_tclose;
869 d->tty->t_param = cx_param;
870 d->tty->t_stop = cx_stop;
871 d->tty->t_modem = cx_tmodem;
872 d->tty->t_oproc = cx_oproc;
873 d->tty->t_sc = d;
874 CX_LOCK (bd);
875 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys);
876 cx_register_receive (c, &cx_receive);
877 cx_register_transmit (c, &cx_transmit);
878 cx_register_error (c, &cx_error);
879 cx_register_modem (c, &cx_modem);
880 CX_UNLOCK (bd);
881
882 ttycreate(d->tty, TS_CALLOUT, "x%r%r", b->num, c->num);
883 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num);
884 d->devt->si_drv1 = d;
885 callout_init (&d->dcd_timeout_handle, CALLOUT_MPSAFE);
886 }
887 splx (s);
888
889 return 0;
890}
891
892static int cx_detach (device_t dev)
893{
894 bdrv_t *bd = device_get_softc (dev);
895 cx_board_t *b = bd->board;
896 cx_chan_t *c;
897 int s;
898
899 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized"));
900
901 s = splhigh ();
902 CX_LOCK (bd);
903 /* Check if the device is busy (open). */
904 for (c = b->chan; c < b->chan + NCHAN; ++c) {
905 drv_t *d = (drv_t*) c->sys;
906
907 if (!d || d->chan->type == T_NONE)
908 continue;
909 if (d->lock) {
910 CX_UNLOCK (bd);
911 splx (s);
912 return EBUSY;
913 }
914 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
915 (d->open_dev|0x2)) {
916 CX_UNLOCK (bd);
917 splx (s);
918 return EBUSY;
919 }
920 if (d->running) {
921 CX_UNLOCK (bd);
922 splx (s);
923 return EBUSY;
924 }
925 }
926
927 /* Deactivate the timeout routine. And soft interrupt*/
928 callout_stop (&led_timo[b->num]);
929
930 for (c = b->chan; c < b->chan + NCHAN; ++c) {
931 drv_t *d = c->sys;
932
933 if (!d || d->chan->type == T_NONE)
934 continue;
935
936 callout_stop (&d->dcd_timeout_handle);
937 }
938 CX_UNLOCK (bd);
939 bus_teardown_intr (dev, bd->irq_res, bd->intrhand);
940 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res);
941
942 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res);
943
944 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res);
945
946 CX_LOCK (bd);
947 cx_close_board (b);
948
949 /* Detach the interfaces, free buffer memory. */
950 for (c = b->chan; c < b->chan + NCHAN; ++c) {
951 drv_t *d = (drv_t*) c->sys;
952
953 if (!d || d->chan->type == T_NONE)
954 continue;
955
956 if (d->tty) {
957 ttyfree (d->tty);
958 d->tty = NULL;
959 }
960
961 callout_stop (&d->timeout_handle);
962#ifdef NETGRAPH
963 if (d->node) {
964 ng_rmnode_self (d->node);
965 NG_NODE_UNREF (d->node);
966 d->node = NULL;
967 }
968 mtx_destroy (&d->lo_queue.ifq_mtx);
969 mtx_destroy (&d->hi_queue.ifq_mtx);
970#else
971 /* Detach from the packet filter list of interfaces. */
972 bpfdetach (d->ifp);
973 /* Detach from the sync PPP list. */
974 sppp_detach (d->ifp);
975
976 if_detach (d->ifp);
977 if_free(d->ifp);
978 /* XXXRIK: check interconnection with irq handler */
979 IF_DRAIN (&d->queue);
980 mtx_destroy (&d->queue.ifq_mtx);
981#endif
982 destroy_dev (d->devt);
983 }
984
985 cx_led_off (b);
986 CX_UNLOCK (bd);
987 callout_drain (&led_timo[b->num]);
988 for (c = b->chan; c < b->chan + NCHAN; ++c) {
989 drv_t *d = c->sys;
990
991 if (!d || d->chan->type == T_NONE)
992 continue;
993
994 callout_drain (&d->dcd_timeout_handle);
995 callout_drain (&d->timeout_handle);
996 }
997 splx (s);
998
999 s = splhigh ();
1000 for (c = b->chan; c < b->chan + NCHAN; ++c) {
1001 drv_t *d = (drv_t*) c->sys;
1002
1003 if (!d || d->chan->type == T_NONE)
1004 continue;
1005
1006 /* Deallocate buffers. */
1007 cx_bus_dma_mem_free (&d->dmamem);
1008 }
1009 bd->board = 0;
1010 adapter [b->num] = 0;
1011 free (b, M_DEVBUF);
1012 splx (s);
1013
1014 mtx_destroy (&bd->cx_mtx);
1015
1016 return 0;
1017}
1018
1019#ifndef NETGRAPH
1020static void cx_ifstart (struct ifnet *ifp)
1021{
1022 drv_t *d = ifp->if_softc;
1023 bdrv_t *bd = d->board->sys;
1024
1025 CX_LOCK (bd);
1026 cx_start (d);
1027 CX_UNLOCK (bd);
1028}
1029
1030static void cx_tlf (struct sppp *sp)
1031{
1032 drv_t *d = SP2IFP(sp)->if_softc;
1033
1034 CX_DEBUG (d, ("cx_tlf\n"));
1035/* cx_set_dtr (d->chan, 0);*/
1036/* cx_set_rts (d->chan, 0);*/
1037 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO))
1038 sp->pp_down (sp);
1039}
1040
1041static void cx_tls (struct sppp *sp)
1042{
1043 drv_t *d = SP2IFP(sp)->if_softc;
1044
1045 CX_DEBUG (d, ("cx_tls\n"));
1046 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO))
1047 sp->pp_up (sp);
1048}
1049
1050/*
1051 * Initialization of interface.
1052 * It seems to be never called by upper level.
1053 */
1054static void cx_initialize (void *softc)
1055{
1056 drv_t *d = softc;
1057
1058 CX_DEBUG (d, ("cx_initialize\n"));
1059}
1060
1061/*
1062 * Process an ioctl request.
1063 */
1064static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data)
1065{
1066 drv_t *d = ifp->if_softc;
1067 bdrv_t *bd = d->board->sys;
1068 int error, s, was_up, should_be_up;
1069
1070 /* No socket ioctls while the channel is in async mode. */
1071 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC)
1072 return EBUSY;
1073
1074 /* Socket ioctls on slave subchannels are not allowed. */
1075 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
1076 error = sppp_ioctl (ifp, cmd, data);
1077 if (error)
1078 return error;
1079
1080 s = splhigh ();
1081 CX_LOCK (bd);
1082 if (! (ifp->if_flags & IFF_DEBUG))
1083 d->chan->debug = 0;
1084 else
1085 d->chan->debug = d->chan->debug_shadow;
1086 CX_UNLOCK (bd);
1087 splx (s);
1088
1089 switch (cmd) {
1090 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0;
1091 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0;
1092 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0;
1093 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break;
1094 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break;
1095 }
1096
1097 /* We get here only in case of SIFFLAGS or SIFADDR. */
1098 s = splhigh ();
1099 CX_LOCK (bd);
1100 should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
1101 if (!was_up && should_be_up) {
1102 /* Interface goes up -- start it. */
1103 cx_up (d);
1104 cx_start (d);
1105 } else if (was_up && !should_be_up) {
1106 /* Interface is going down -- stop it. */
1107 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/
1108 cx_down (d);
1109 }
1110 CX_UNLOCK (bd);
1111 splx (s);
1112 return 0;
1113}
1114#endif /*NETGRAPH*/
1115
1116/*
1117 * Stop the interface. Called on splimp().
1118 */
1119static void cx_down (drv_t *d)
1120{
1121 int s = splhigh ();
1122 CX_DEBUG (d, ("cx_down\n"));
1123 cx_set_dtr (d->chan, 0);
1124 cx_set_rts (d->chan, 0);
1125 d->running = 0;
1126 callout_stop (&d->timeout_handle);
1127 splx (s);
1128}
1129
1130/*
1131 * Start the interface. Called on splimp().
1132 */
1133static void cx_up (drv_t *d)
1134{
1135 int s = splhigh ();
1136 CX_DEBUG (d, ("cx_up\n"));
1137 cx_set_dtr (d->chan, 1);
1138 cx_set_rts (d->chan, 1);
1139 d->running = 1;
1140 splx (s);
1141}
1142
1143/*
1144 * Start output on the (slave) interface. Get another datagram to send
1145 * off of the interface queue, and copy it to the interface
1146 * before starting the output.
1147 */
1148static void cx_send (drv_t *d)
1149{
1150 struct mbuf *m;
1151 u_short len;
1152
1153 CX_DEBUG2 (d, ("cx_send\n"));
1154
1155 /* No output if the interface is down. */
1156 if (! d->running)
1157 return;
1158
1159 /* No output if the modem is off. */
1160 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan))
1161 return;
1162
1163 if (cx_buf_free (d->chan)) {
1164 /* Get the packet to send. */
1165#ifdef NETGRAPH
1166 IF_DEQUEUE (&d->hi_queue, m);
1167 if (! m)
1168 IF_DEQUEUE (&d->lo_queue, m);
1169#else
1170 m = sppp_dequeue (d->ifp);
1171#endif
1172 if (! m)
1173 return;
1174#ifndef NETGRAPH
1175 BPF_MTAP (d->ifp, m);
1176#endif
1177 len = m_length (m, NULL);
1178 if (! m->m_next)
1179 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t),
1180 len, 0);
1181 else {
1182 u_char buf [DMABUFSZ];
1183 m_copydata (m, 0, len, buf);
1184 cx_send_packet (d->chan, buf, len, 0);
1185 }
1186 m_freem (m);
1187
1188 /* Set up transmit timeout, 10 seconds. */
1189 d->timeout = 10;
1190 }
1191#ifndef NETGRAPH
1192 d->ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1193#endif
1194}
1195
1196/*
1197 * Start output on the interface.
1198 * Always called on splimp().
1199 */
1200static void cx_start (drv_t *d)
1201{
1202 int s = splhigh ();
1203 if (d->running) {
1204 if (! d->chan->dtr)
1205 cx_set_dtr (d->chan, 1);
1206 if (! d->chan->rts)
1207 cx_set_rts (d->chan, 1);
1208 cx_send (d);
1209 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
1210 }
1211 splx (s);
1212}
1213
1214/*
1215 * Handle transmit timeouts.
1216 * Recover after lost transmit interrupts.
1217 * Always called on splimp().
1218 */
1219static void cx_watchdog (drv_t *d)
1220{
1221
1222 CX_DEBUG (d, ("device timeout\n"));
1223 if (d->running) {
1224 cx_setup_chan (d->chan);
1225 cx_start_chan (d->chan, 0, 0);
1226 cx_set_dtr (d->chan, 1);
1227 cx_set_rts (d->chan, 1);
1228 cx_start (d);
1229 }
1230}
1231
1232static void cx_watchdog_timer (void *arg)
1233{
1234 drv_t *d = arg;
1235 bdrv_t *bd = d->board->sys;
1236
1237 CX_LOCK (bd);
1238 if (d->timeout == 1)
1239 cx_watchdog (d);
1240 if (d->timeout)
1241 d->timeout--;
1242 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
1243 CX_UNLOCK (bd);
1244}
1245
1246/*
1247 * Transmit callback function.
1248 */
1249static void cx_transmit (cx_chan_t *c, void *attachment, int len)
1250{
1251 drv_t *d = c->sys;
1252
1253 if (!d)
1254 return;
1255
1256 if (c->mode == M_ASYNC && d->tty) {
1257 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH);
1258 d->atimeout = 0;
1259 if (d->tty->t_dev) {
1260 d->intr_action |= CX_WRITE;
1261 MY_SOFT_INTR = 1;
1262 swi_sched (cx_fast_ih, 0);
1263 }
1264 return;
1265 }
1266 d->timeout = 0;
1267#ifndef NETGRAPH
1268 ++d->ifp->if_opackets;
1269 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1270#endif
1271 cx_start (d);
1272}
1273
1274/*
1275 * Process the received packet.
1276 */
1277static void cx_receive (cx_chan_t *c, char *data, int len)
1278{
1279 drv_t *d = c->sys;
1280 struct mbuf *m;
1281 char *cc = data;
1282#ifdef NETGRAPH
1283 int error;
1284#endif
1285
1286 if (!d)
1287 return;
1288
1289 if (c->mode == M_ASYNC && d->tty) {
1290 if (d->tty->t_state & TS_ISOPEN) {
1291 async_q *q = &d->aqueue;
1292 int size = BF_SZ - 1 - AQ_GSZ (q);
1293
1294 if (len <= 0 && !size)
1295 return;
1296
1297 if (len > size) {
1298 c->ierrs++;
1299 cx_error (c, CX_OVERRUN);
1300 len = size - 1;
1301 }
1302
1303 while (len--) {
1304 AQ_PUSH (q, *(unsigned char *)cc);
1305 cc++;
1306 }
1307
1308 d->intr_action |= CX_READ;
1309 MY_SOFT_INTR = 1;
1310 swi_sched (cx_fast_ih, 0);
1311 }
1312 return;
1313 }
1314 if (! d->running)
1315 return;
1316
1317 m = makembuf (data, len);
1318 if (! m) {
1319 CX_DEBUG (d, ("no memory for packet\n"));
1320#ifndef NETGRAPH
1321 ++d->ifp->if_iqdrops;
1322#endif
1323 return;
1324 }
1325 if (c->debug > 1)
1326 printmbuf (m);
1327#ifdef NETGRAPH
1328 m->m_pkthdr.rcvif = 0;
1329 NG_SEND_DATA_ONLY (error, d->hook, m);
1330#else
1331 ++d->ifp->if_ipackets;
1332 m->m_pkthdr.rcvif = d->ifp;
1333 /* Check if there's a BPF listener on this interface.
1334 * If so, hand off the raw packet to bpf. */
1335 BPF_TAP (d->ifp, data, len);
1336 IF_ENQUEUE (&d->queue, m);
1337#endif
1338}
1339
1340#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\
1341 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\
1342 && (!(tp->t_iflag & PARMRK)\
1343 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\
1344 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\
1345 && linesw[tp->t_line]->l_rint == ttyinput)
1346
1347/*
1348 * Error callback function.
1349 */
1350static void cx_error (cx_chan_t *c, int data)
1351{
1352 drv_t *d = c->sys;
1353 async_q *q;
1354
1355 if (!d)
1356 return;
1357
1358 q = &(d->aqueue);
1359
1360 switch (data) {
1361 case CX_FRAME:
1362 CX_DEBUG (d, ("frame error\n"));
1363 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1364 && (AQ_GSZ (q) < BF_SZ - 1)
1365 && (!CONDITION((&d->tty->t_termios), (d->tty))
1366 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1367 AQ_PUSH (q, TTY_FE);
1368 d->intr_action |= CX_READ;
1369 MY_SOFT_INTR = 1;
1370 swi_sched (cx_fast_ih, 0);
1371 }
1372#ifndef NETGRAPH
1373 else
1374 ++d->ifp->if_ierrors;
1375#endif
1376 break;
1377 case CX_CRC:
1378 CX_DEBUG (d, ("crc error\n"));
1379 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1380 && (AQ_GSZ (q) < BF_SZ - 1)
1381 && (!CONDITION((&d->tty->t_termios), (d->tty))
1382 || !(d->tty->t_iflag & INPCK)
1383 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1384 AQ_PUSH (q, TTY_PE);
1385 d->intr_action |= CX_READ;
1386 MY_SOFT_INTR = 1;
1387 swi_sched (cx_fast_ih, 0);
1388 }
1389#ifndef NETGRAPH
1390 else
1391 ++d->ifp->if_ierrors;
1392#endif
1393 break;
1394 case CX_OVERRUN:
1395 CX_DEBUG (d, ("overrun error\n"));
1396#ifdef TTY_OE
1397 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1398 && (AQ_GSZ (q) < BF_SZ - 1)
1399 && (!CONDITION((&d->tty->t_termios), (d->tty)))) {
1400 AQ_PUSH (q, TTY_OE);
1401 d->intr_action |= CX_READ;
1402 MY_SOFT_INTR = 1;
1403 swi_sched (cx_fast_ih, 0);
1404 }
1405#endif
1406#ifndef NETGRAPH
1407 else {
1408 ++d->ifp->if_collisions;
1409 ++d->ifp->if_ierrors;
1410 }
1411#endif
1412 break;
1413 case CX_OVERFLOW:
1414 CX_DEBUG (d, ("overflow error\n"));
1415#ifndef NETGRAPH
1416 if (c->mode != M_ASYNC)
1417 ++d->ifp->if_ierrors;
1418#endif
1419 break;
1420 case CX_UNDERRUN:
1421 CX_DEBUG (d, ("underrun error\n"));
1422 if (c->mode != M_ASYNC) {
1423 d->timeout = 0;
1424#ifndef NETGRAPH
1425 ++d->ifp->if_oerrors;
1426 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1427#endif
1428 cx_start (d);
1429 }
1430 break;
1431 case CX_BREAK:
1432 CX_DEBUG (d, ("break error\n"));
1433 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1434 && (AQ_GSZ (q) < BF_SZ - 1)
1435 && (!CONDITION((&d->tty->t_termios), (d->tty))
1436 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) {
1437 AQ_PUSH (q, TTY_BI);
1438 d->intr_action |= CX_READ;
1439 MY_SOFT_INTR = 1;
1440 swi_sched (cx_fast_ih, 0);
1441 }
1442#ifndef NETGRAPH
1443 else
1444 ++d->ifp->if_ierrors;
1445#endif
1446 break;
1447 default:
1448 CX_DEBUG (d, ("error #%d\n", data));
1449 }
1450}
1451
1452static int cx_topen (struct tty *tp, struct cdev *dev)
1453{
1454 bdrv_t *bd;
1455 drv_t *d;
1456
1457 d = tp->t_sc;
1458 CX_DEBUG2 (d, ("cx_open (serial)\n"));
1459
1460 bd = d->board->sys;
1461
1462 if (d->chan->mode != M_ASYNC)
1463 return (EBUSY);
1464
1465 d->open_dev |= 0x2;
1466 CX_LOCK (bd);
1467 cx_start_chan (d->chan, 0, 0);
1468 cx_set_dtr (d->chan, 1);
1469 cx_set_rts (d->chan, 1);
1470 d->cd = cx_get_cd (d->chan);
1471 CX_UNLOCK (bd);
1472
1473 CX_DEBUG2 (d, ("cx_open done\n"));
1474
1475 return 0;
1476}
1477
1478static void cx_tclose (struct tty *tp)
1479{
1480 drv_t *d;
1481 bdrv_t *bd;
1482
1483 d = tp->t_sc;
1484 CX_DEBUG2 (d, ("cx_close\n"));
1485 bd = d->board->sys;
1486 CX_LOCK (bd);
1487 /* Disable receiver.
1488 * Transmitter continues sending the queued data. */
1489 cx_enable_receive (d->chan, 0);
1490 CX_UNLOCK (bd);
1491 d->open_dev &= ~0x2;
1492}
1493
1494static int cx_tmodem (struct tty *tp, int sigon, int sigoff)
1495{
1496 drv_t *d;
1497 bdrv_t *bd;
1498
1499 d = tp->t_sc;
1500 bd = d->board->sys;
1501
1502 CX_LOCK (bd);
1503 if (!sigon && !sigoff) {
1504 if (cx_get_dsr (d->chan)) sigon |= SER_DSR;
1505 if (cx_get_cd (d->chan)) sigon |= SER_DCD;
1506 if (cx_get_cts (d->chan)) sigon |= SER_CTS;
1507 if (d->chan->dtr) sigon |= SER_DTR;
1508 if (d->chan->rts) sigon |= SER_RTS;
1509 CX_UNLOCK (bd);
1510 return sigon;
1511 }
1512
1513 if (sigon & SER_DTR)
1514 cx_set_dtr (d->chan, 1);
1515 if (sigoff & SER_DTR)
1516 cx_set_dtr (d->chan, 0);
1517 if (sigon & SER_RTS)
1518 cx_set_rts (d->chan, 1);
1519 if (sigoff & SER_RTS)
1520 cx_set_rts (d->chan, 0);
1521 CX_UNLOCK (bd);
1522
1523 return (0);
1524}
1525
1526static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td)
1527{
1528 int unit;
1529 drv_t *d;
1530
1531 d = dev->si_drv1;
1532 unit = d->chan->num;
1533
1534 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n",
1535 unit, flag, mode));
1536
1537 d->open_dev |= 0x1;
1538
1539 CX_DEBUG2 (d, ("cx_open done\n"));
1540
1541 return 0;
1542}
1543
1544static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td)
1545{
1546 drv_t *d;
1547
1548 d = dev->si_drv1;
1549 CX_DEBUG2 (d, ("cx_close\n"));
1550 d->open_dev &= ~0x1;
1551 return 0;
1552}
1553
1554static int cx_modem_status (drv_t *d)
1555{
1556 bdrv_t *bd = d->board->sys;
1557 int status = 0, s = splhigh ();
1558 CX_LOCK (bd);
1559 /* Already opened by someone or network interface is up? */
1560 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1561 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running))
1562 status = TIOCM_LE; /* always enabled while open */
1563
1564 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR;
1565 if (cx_get_cd (d->chan)) status |= TIOCM_CD;
1566 if (cx_get_cts (d->chan)) status |= TIOCM_CTS;
1567 if (d->chan->dtr) status |= TIOCM_DTR;
1568 if (d->chan->rts) status |= TIOCM_RTS;
1569 CX_UNLOCK (bd);
1570 splx (s);
1571 return status;
1572}
1573
1574static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1575{
1576 drv_t *d;
1577 bdrv_t *bd;
1578 cx_chan_t *c;
1579 struct serial_statistics *st;
1580 int error, s;
1581 char mask[16];
1582
1583 d = dev->si_drv1;
1584 c = d->chan;
1585
1586 bd = d->board->sys;
1587
1588 switch (cmd) {
1589 case SERIAL_GETREGISTERED:
1590 CX_DEBUG2 (d, ("ioctl: getregistered\n"));
1591 bzero (mask, sizeof(mask));
1592 for (s=0; s<NCX*NCHAN; ++s)
1593 if (channel [s])
1594 mask [s/8] |= 1 << (s & 7);
1595 bcopy (mask, data, sizeof (mask));
1596 return 0;
1597
1598 case SERIAL_GETPORT:
1599 CX_DEBUG2 (d, ("ioctl: getport\n"));
1600 s = splhigh ();
1601 CX_LOCK (bd);
1602 *(int *)data = cx_get_port (c);
1603 CX_UNLOCK (bd);
1604 splx (s);
1605 if (*(int *)data<0)
1606 return (EINVAL);
1607 else
1608 return 0;
1609
1610 case SERIAL_SETPORT:
1611 CX_DEBUG2 (d, ("ioctl: setproto\n"));
1612 /* Only for superuser! */
1613 error = priv_check (td, PRIV_DRIVER);
1614 if (error)
1615 return error;
1616
1617 s = splhigh ();
1618 CX_LOCK (bd);
1619 cx_set_port (c, *(int *)data);
1620 CX_UNLOCK (bd);
1621 splx (s);
1622 return 0;
1623
1624#ifndef NETGRAPH
1625 case SERIAL_GETPROTO:
1626 CX_DEBUG2 (d, ("ioctl: getproto\n"));
1627 s = splhigh ();
1628 CX_LOCK (bd);
1629 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" :
1630 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" :
1631 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp");
1632 CX_UNLOCK (bd);
1633 splx (s);
1634 return 0;
1635
1636 case SERIAL_SETPROTO:
1637 CX_DEBUG2 (d, ("ioctl: setproto\n"));
1638 /* Only for superuser! */
1639 error = priv_check (td, PRIV_DRIVER);
1640 if (error)
1641 return error;
1642 if (c->mode == M_ASYNC)
1643 return EBUSY;
1644 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING)
1645 return EBUSY;
1646 if (! strcmp ("cisco", (char*)data)) {
1647 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR);
1648 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE;
1649 d->ifp->if_flags |= PP_CISCO;
1650 } else if (! strcmp ("fr", (char*)data)) {
1651 d->ifp->if_flags &= ~(PP_CISCO);
1652 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE;
1653 } else if (! strcmp ("ppp", (char*)data)) {
1654 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE);
1655 d->ifp->if_flags &= ~(PP_CISCO);
1656 } else
1657 return EINVAL;
1658 return 0;
1659
1660 case SERIAL_GETKEEPALIVE:
1661 CX_DEBUG2 (d, ("ioctl: getkeepalive\n"));
1662 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) ||
1663 (d->ifp->if_flags & PP_CISCO) ||
1664 (c->mode == M_ASYNC))
1665 return EINVAL;
1666 s = splhigh ();
1667 CX_LOCK (bd);
1668 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0;
1669 CX_UNLOCK (bd);
1670 splx (s);
1671 return 0;
1672
1673 case SERIAL_SETKEEPALIVE:
1674 CX_DEBUG2 (d, ("ioctl: setkeepalive\n"));
1675 /* Only for superuser! */
1676 error = priv_check (td, PRIV_DRIVER);
1677 if (error)
1678 return error;
1679 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) ||
1680 (d->ifp->if_flags & PP_CISCO))
1681 return EINVAL;
1682 s = splhigh ();
1683 CX_LOCK (bd);
1684 if (*(int*)data)
1685 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE;
1686 else
1687 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE;
1688 CX_UNLOCK (bd);
1689 splx (s);
1690 return 0;
1691#endif /*NETGRAPH*/
1692
1693 case SERIAL_GETMODE:
1694 CX_DEBUG2 (d, ("ioctl: getmode\n"));
1695 s = splhigh ();
1696 CX_LOCK (bd);
1697 *(int*)data = (c->mode == M_ASYNC) ?
1698 SERIAL_ASYNC : SERIAL_HDLC;
1699 CX_UNLOCK (bd);
1700 splx (s);
1701 return 0;
1702
1703 case SERIAL_SETMODE:
1704 CX_DEBUG2 (d, ("ioctl: setmode\n"));
1705 /* Only for superuser! */
1706 error = priv_check (td, PRIV_DRIVER);
1707 if (error)
1708 return error;
1709
1710 /* Somebody is waiting for carrier? */
1711 if (d->lock)
1712 return EBUSY;
1713 /* /dev/ttyXX is already opened by someone? */
1714 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1715 (d->open_dev|0x2))
1716 return EBUSY;
1717 /* Network interface is up?
1718 * Cannot change to async mode. */
1719 if (c->mode != M_ASYNC && d->running &&
1720 (*(int*)data == SERIAL_ASYNC))
1721 return EBUSY;
1722
1723 s = splhigh ();
1724 CX_LOCK (bd);
1725 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) {
1726 cx_set_mode (c, M_ASYNC);
1727 cx_enable_receive (c, 0);
1728 cx_enable_transmit (c, 0);
1729 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) {
1730 if (d->ifp->if_flags & IFF_DEBUG)
1731 c->debug = c->debug_shadow;
1732 cx_set_mode (c, M_HDLC);
1733 cx_enable_receive (c, 1);
1734 cx_enable_transmit (c, 1);
1735 }
1736 CX_UNLOCK (bd);
1737 splx (s);
1738 return 0;
1739
1740 case SERIAL_GETSTAT:
1741 CX_DEBUG2 (d, ("ioctl: getestat\n"));
1742 st = (struct serial_statistics*) data;
1743 s = splhigh ();
1744 CX_LOCK (bd);
1745 st->rintr = c->rintr;
1746 st->tintr = c->tintr;
1747 st->mintr = c->mintr;
1748 st->ibytes = c->ibytes;
1749 st->ipkts = c->ipkts;
1750 st->ierrs = c->ierrs;
1751 st->obytes = c->obytes;
1752 st->opkts = c->opkts;
1753 st->oerrs = c->oerrs;
1754 CX_UNLOCK (bd);
1755 splx (s);
1756 return 0;
1757
1758 case SERIAL_CLRSTAT:
1759 CX_DEBUG2 (d, ("ioctl: clrstat\n"));
1760 /* Only for superuser! */
1761 error = priv_check (td, PRIV_DRIVER);
1762 if (error)
1763 return error;
1764 s = splhigh ();
1765 CX_LOCK (bd);
1766 c->rintr = 0;
1767 c->tintr = 0;
1768 c->mintr = 0;
1769 c->ibytes = 0;
1770 c->ipkts = 0;
1771 c->ierrs = 0;
1772 c->obytes = 0;
1773 c->opkts = 0;
1774 c->oerrs = 0;
1775 CX_UNLOCK (bd);
1776 splx (s);
1777 return 0;
1778
1779 case SERIAL_GETBAUD:
1780 CX_DEBUG2 (d, ("ioctl: getbaud\n"));
1781 if (c->mode == M_ASYNC)
1782 return EINVAL;
1783 s = splhigh ();
1784 CX_LOCK (bd);
1785 *(long*)data = cx_get_baud(c);
1786 CX_UNLOCK (bd);
1787 splx (s);
1788 return 0;
1789
1790 case SERIAL_SETBAUD:
1791 CX_DEBUG2 (d, ("ioctl: setbaud\n"));
1792 /* Only for superuser! */
1793 error = priv_check (td, PRIV_DRIVER);
1794 if (error)
1795 return error;
1796 if (c->mode == M_ASYNC)
1797 return EINVAL;
1798 s = splhigh ();
1799 CX_LOCK (bd);
1800 cx_set_baud (c, *(long*)data);
1801 CX_UNLOCK (bd);
1802 splx (s);
1803 return 0;
1804
1805 case SERIAL_GETLOOP:
1806 CX_DEBUG2 (d, ("ioctl: getloop\n"));
1807 if (c->mode == M_ASYNC)
1808 return EINVAL;
1809 s = splhigh ();
1810 CX_LOCK (bd);
1811 *(int*)data = cx_get_loop (c);
1812 CX_UNLOCK (bd);
1813 splx (s);
1814 return 0;
1815
1816 case SERIAL_SETLOOP:
1817 CX_DEBUG2 (d, ("ioctl: setloop\n"));
1818 /* Only for superuser! */
1819 error = priv_check (td, PRIV_DRIVER);
1820 if (error)
1821 return error;
1822 if (c->mode == M_ASYNC)
1823 return EINVAL;
1824 s = splhigh ();
1825 CX_LOCK (bd);
1826 cx_set_loop (c, *(int*)data);
1827 CX_UNLOCK (bd);
1828 splx (s);
1829 return 0;
1830
1831 case SERIAL_GETDPLL:
1832 CX_DEBUG2 (d, ("ioctl: getdpll\n"));
1833 if (c->mode == M_ASYNC)
1834 return EINVAL;
1835 s = splhigh ();
1836 CX_LOCK (bd);
1837 *(int*)data = cx_get_dpll (c);
1838 CX_UNLOCK (bd);
1839 splx (s);
1840 return 0;
1841
1842 case SERIAL_SETDPLL:
1843 CX_DEBUG2 (d, ("ioctl: setdpll\n"));
1844 /* Only for superuser! */
1845 error = priv_check (td, PRIV_DRIVER);
1846 if (error)
1847 return error;
1848 if (c->mode == M_ASYNC)
1849 return EINVAL;
1850 s = splhigh ();
1851 CX_LOCK (bd);
1852 cx_set_dpll (c, *(int*)data);
1853 CX_UNLOCK (bd);
1854 splx (s);
1855 return 0;
1856
1857 case SERIAL_GETNRZI:
1858 CX_DEBUG2 (d, ("ioctl: getnrzi\n"));
1859 if (c->mode == M_ASYNC)
1860 return EINVAL;
1861 s = splhigh ();
1862 CX_LOCK (bd);
1863 *(int*)data = cx_get_nrzi (c);
1864 CX_UNLOCK (bd);
1865 splx (s);
1866 return 0;
1867
1868 case SERIAL_SETNRZI:
1869 CX_DEBUG2 (d, ("ioctl: setnrzi\n"));
1870 /* Only for superuser! */
1871 error = priv_check (td, PRIV_DRIVER);
1872 if (error)
1873 return error;
1874 if (c->mode == M_ASYNC)
1875 return EINVAL;
1876 s = splhigh ();
1877 CX_LOCK (bd);
1878 cx_set_nrzi (c, *(int*)data);
1879 CX_UNLOCK (bd);
1880 splx (s);
1881 return 0;
1882
1883 case SERIAL_GETDEBUG:
1884 CX_DEBUG2 (d, ("ioctl: getdebug\n"));
1885 s = splhigh ();
1886 CX_LOCK (bd);
1887 *(int*)data = c->debug;
1888 CX_UNLOCK (bd);
1889 splx (s);
1890 return 0;
1891
1892 case SERIAL_SETDEBUG:
1893 CX_DEBUG2 (d, ("ioctl: setdebug\n"));
1894 /* Only for superuser! */
1895 error = priv_check (td, PRIV_DRIVER);
1896 if (error)
1897 return error;
1898 s = splhigh ();
1899 CX_LOCK (bd);
1900#ifndef NETGRAPH
1901 if (c->mode == M_ASYNC) {
1902 c->debug = *(int*)data;
1903 } else {
1904 /*
1905 * The debug_shadow is always greater than zero for
1906 * logic simplicity. For switching debug off the
1907 * IFF_DEBUG is responsible (for !M_ASYNC mode).
1908 */
1909 c->debug_shadow = (*(int*)data) ? (*(int*)data) : 1;
1910 if (d->ifp->if_flags & IFF_DEBUG)
1911 c->debug = c->debug_shadow;
1912 }
1913#else
1914 c->debug = *(int*)data;
1915#endif
1916 CX_UNLOCK (bd);
1917 splx (s);
1918 return 0;
1919 }
1920
1921 switch (cmd) {
1922 case TIOCSDTR: /* Set DTR */
1923 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n"));
1924 s = splhigh ();
1925 CX_LOCK (bd);
1926 cx_set_dtr (c, 1);
1927 CX_UNLOCK (bd);
1928 splx (s);
1929 return 0;
1930
1931 case TIOCCDTR: /* Clear DTR */
1932 CX_DEBUG2 (d, ("ioctl: tioccdtr\n"));
1933 s = splhigh ();
1934 CX_LOCK (bd);
1935 cx_set_dtr (c, 0);
1936 CX_UNLOCK (bd);
1937 splx (s);
1938 return 0;
1939
1940 case TIOCMSET: /* Set DTR/RTS */
1941 CX_DEBUG2 (d, ("ioctl: tiocmset\n"));
1942 s = splhigh ();
1943 CX_LOCK (bd);
1944 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0);
1945 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0);
1946 CX_UNLOCK (bd);
1947 splx (s);
1948 return 0;
1949
1950 case TIOCMBIS: /* Add DTR/RTS */
1951 CX_DEBUG2 (d, ("ioctl: tiocmbis\n"));
1952 s = splhigh ();
1953 CX_LOCK (bd);
1954 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1);
1955 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1);
1956 CX_UNLOCK (bd);
1957 splx (s);
1958 return 0;
1959
1960 case TIOCMBIC: /* Clear DTR/RTS */
1961 CX_DEBUG2 (d, ("ioctl: tiocmbic\n"));
1962 s = splhigh ();
1963 CX_LOCK (bd);
1964 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0);
1965 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0);
1966 CX_UNLOCK (bd);
1967 splx (s);
1968 return 0;
1969
1970 case TIOCMGET: /* Get modem status */
1971 CX_DEBUG2 (d, ("ioctl: tiocmget\n"));
1972 *(int*)data = cx_modem_status (d);
1973 return 0;
1974
1975 }
1976
1977 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd));
1978 return ENOTTY;
1979}
1980
1981void cx_softintr (void *unused)
1982{
1983 drv_t *d;
1984 bdrv_t *bd;
1985 async_q *q;
1986 int i, s, ic, k;
1987 while (MY_SOFT_INTR) {
1988 MY_SOFT_INTR = 0;
1989 for (i=0; i<NCX*NCHAN; ++i) {
1990 d = channel [i];
1991 if (!d || !d->chan || d->chan->type == T_NONE
1992 || d->chan->mode != M_ASYNC || !d->tty
1993 || !d->tty->t_dev)
1994 continue;
1995 bd = d->board->sys;
1996 s = splhigh ();
1997 CX_LOCK (bd);
1998 if (d->intr_action & CX_READ) {
1999 q = &(d->aqueue);
2000 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) {
2001 k = AQ_GSZ(q);
2002 if (d->tty->t_rawq.c_cc + k >
2003 d->tty->t_ihiwat
2004 && (d->tty->t_cflag & CRTS_IFLOW
2005 || d->tty->t_iflag & IXOFF)
2006 && !(d->tty->t_state & TS_TBLOCK))
2007 ttyblock(d->tty);
2008 d->tty->t_rawcc += k;
2009 while (k>0) {
2010 k--;
2011 AQ_POP (q, ic);
2012 CX_UNLOCK (bd);
2013 splx (s);
2014 putc (ic, &d->tty->t_rawq);
2015 s = splhigh ();
2016 CX_LOCK (bd);
2017 }
2018 ttwakeup(d->tty);
2019 if (d->tty->t_state & TS_TTSTOP
2020 && (d->tty->t_iflag & IXANY
2021 || d->tty->t_cc[VSTART] ==
2022 d->tty->t_cc[VSTOP])) {
2023 d->tty->t_state &= ~TS_TTSTOP;
2024 d->tty->t_lflag &= ~FLUSHO;
2025 d->intr_action |= CX_WRITE;
2026 }
2027 } else {
2028 while (q->end != q->beg) {
2029 AQ_POP (q, ic);
2030 CX_UNLOCK (bd);
2031 splx (s);
2032 ttyld_rint (d->tty, ic);
2033 s = splhigh ();
2034 CX_LOCK (bd);
2035 }
2036 }
2037 d->intr_action &= ~CX_READ;
2038 }
2039 splx (s);
2040 CX_UNLOCK (bd);
2041
2042 s = splhigh ();
2043 CX_LOCK (bd);
2044 if (d->intr_action & CX_WRITE) {
2045 if (d->tty->t_line)
2046 ttyld_start (d->tty);
2047 else
2048 cx_oproc (d->tty);
2049 d->intr_action &= ~CX_WRITE;
2050 }
2051 CX_UNLOCK (bd);
2052 splx (s);
2053
2054 }
2055 }
2056}
2057
2058/*
2059 * Fill transmitter buffer with data.
2060 */
2061static void cx_oproc (struct tty *tp)
2062{
2063 int s, k;
2064 drv_t *d;
2065 bdrv_t *bd;
2066 static u_char buf[DMABUFSZ];
2067 u_char *p;
2068 u_short len = 0, sublen = 0;
2069
2070 d = tp->t_sc;
2071 bd = d->board->sys;
2072
2073 CX_DEBUG2 (d, ("cx_oproc\n"));
2074
2075 s = splhigh ();
2076 CX_LOCK (bd);
2077
2078 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts)
2079 cx_set_rts (d->chan, 0);
2080 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts)
2081 cx_set_rts (d->chan, 1);
2082
2083 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) {
2084 /* Start transmitter. */
2085 cx_enable_transmit (d->chan, 1);
2086
2087 /* Is it busy? */
2088 if (! cx_buf_free (d->chan)) {
2089 tp->t_state |= TS_BUSY;
2090 CX_UNLOCK (bd);
2091 splx (s);
2092 return;
2093 }
2094 if (tp->t_iflag & IXOFF) {
2095 p = (buf + (DMABUFSZ/2));
2096 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
2097 k = sublen;
2098 while (k--) {
2099 /* Send XON/XOFF out of band. */
2100 if (*p == tp->t_cc[VSTOP]) {
2101 cx_xflow_ctl (d->chan, 0);
2102 p++;
2103 continue;
2104 }
2105 if (*p == tp->t_cc[VSTART]) {
2106 cx_xflow_ctl (d->chan, 1);
2107 p++;
2108 continue;
2109 }
2110 buf[len] = *p;
2111 len++;
2112 p++;
2113 }
2114 } else {
2115 p = buf;
2116 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
2117 }
2118 if (len) {
2119 cx_send_packet (d->chan, buf, len, 0);
2120 tp->t_state |= TS_BUSY;
2121 d->atimeout = 10;
2122 CX_DEBUG2 (d, ("out %d bytes\n", len));
2123 }
2124 }
2125 ttwwakeup (tp);
2126 CX_UNLOCK (bd);
2127 splx (s);
2128}
2129
2130static int cx_param (struct tty *tp, struct termios *t)
2131{
2132 drv_t *d;
2133 bdrv_t *bd;
2134 int s, bits, parity;
2135
2136 d = tp->t_sc;
2137 bd = d->board->sys;
2138
2139 s = splhigh ();
2140 CX_LOCK (bd);
2141 if (t->c_ospeed == 0) {
2142 /* Clear DTR and RTS. */
2143 cx_set_dtr (d->chan, 0);
2144 CX_UNLOCK (bd);
2145 splx (s);
2146 CX_DEBUG2 (d, ("cx_param (hangup)\n"));
2147 return 0;
2148 }
2149 CX_DEBUG2 (d, ("cx_param\n"));
2150
2151 /* Check requested parameters. */
2152 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) {
2153 CX_UNLOCK (bd);
2154 splx (s);
2155 return EINVAL;
2156 }
2157 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) {
2158 CX_UNLOCK (bd);
2159 splx (s);
2160 return EINVAL;
2161 }
2162
2163 /* And copy them to tty and channel structures. */
2164 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed;
2165 tp->t_cflag = t->c_cflag;
2166
2167 /* Set character length and parity mode. */
2168 switch (t->c_cflag & CSIZE) {
2169 default:
2170 case CS8: bits = 8; break;
2171 case CS7: bits = 7; break;
2172 case CS6: bits = 6; break;
2173 case CS5: bits = 5; break;
2174 }
2175
2176 parity = ((t->c_cflag & PARENB) ? 1 : 0) *
2177 (1 + ((t->c_cflag & PARODD) ? 0 : 1));
2178
2179 /* Set current channel number. */
2180 if (! d->chan->dtr)
2181 cx_set_dtr (d->chan, 1);
2182
2183 ttyldoptim (tp);
2184 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB),
2185 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS),
2186 (t->c_iflag & IXON), (t->c_iflag & IXANY),
2187 t->c_cc[VSTART], t->c_cc[VSTOP]);
2188 CX_UNLOCK (bd);
2189 splx (s);
2190 return 0;
2191}
2192
2193/*
2194 * Stop output on a line
2195 */
2196static void cx_stop (struct tty *tp, int flag)
2197{
2198 drv_t *d;
2199 bdrv_t *bd;
2200 int s;
2201
2202 d = tp->t_sc;
2203 bd = d->board->sys;
2204
2205 s = splhigh ();
2206 CX_LOCK (bd);
2207 if (tp->t_state & TS_BUSY) {
2208 /* Stop transmitter */
2209 CX_DEBUG2 (d, ("cx_stop\n"));
2210 cx_transmitter_ctl (d->chan, 0);
2211 }
2212 CX_UNLOCK (bd);
2213 splx (s);
2214}
2215
2216/*
2217 * Process the (delayed) carrier signal setup.
2218 */
2219static void cx_carrier (void *arg)
2220{
2221 drv_t *d = arg;
2222 bdrv_t *bd = d->board->sys;
2223 cx_chan_t *c = d->chan;
2224 int s, cd;
2225
2226 s = splhigh ();
2227 CX_LOCK (bd);
2228 cd = cx_get_cd (c);
2229 if (d->cd != cd) {
2230 if (cd) {
2231 CX_DEBUG (d, ("carrier on\n"));
2232 d->cd = 1;
2233 CX_UNLOCK (bd);
2234 splx (s);
2235 if (d->tty)
2236 ttyld_modem(d->tty, 1);
2237 } else {
2238 CX_DEBUG (d, ("carrier loss\n"));
2239 d->cd = 0;
2240 CX_UNLOCK (bd);
2241 splx (s);
2242 if (d->tty)
2243 ttyld_modem(d->tty, 0);
2244 }
2245 } else {
2246 CX_UNLOCK (bd);
2247 splx (s);
2248 }
2249}
2250
2251/*
2252 * Modem signal callback function.
2253 */
2254static void cx_modem (cx_chan_t *c)
2255{
2256 drv_t *d = c->sys;
2257
2258 if (!d || c->mode != M_ASYNC)
2259 return;
2260 /* Handle carrier detect/loss. */
2261 /* Carrier changed - delay processing DCD for a while
2262 * to give both sides some time to initialize. */
2263 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d);
2264}
2265
2266#ifdef NETGRAPH
2267static int ng_cx_constructor (node_p node)
2268{
2269 drv_t *d = NG_NODE_PRIVATE (node);
2270 CX_DEBUG (d, ("Constructor\n"));
2271 return EINVAL;
2272}
2273
2274static int ng_cx_newhook (node_p node, hook_p hook, const char *name)
2275{
2276 int s;
2277 drv_t *d = NG_NODE_PRIVATE (node);
2278 bdrv_t *bd = d->board->sys;
2279
2280 if (d->chan->mode == M_ASYNC)
2281 return EINVAL;
2282
2283 /* Attach debug hook */
2284 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) {
2285 NG_HOOK_SET_PRIVATE (hook, NULL);
2286 d->debug_hook = hook;
2287 return 0;
2288 }
2289
2290 /* Check for raw hook */
2291 if (strcmp (name, NG_CX_HOOK_RAW) != 0)
2292 return EINVAL;
2293
2294 NG_HOOK_SET_PRIVATE (hook, d);
2295 d->hook = hook;
2296 s = splhigh ();
2297 CX_LOCK (bd);
2298 cx_up (d);
2299 CX_UNLOCK (bd);
2300 splx (s);
2301 return 0;
2302}
2303
2304static int print_modems (char *s, cx_chan_t *c, int need_header)
2305{
2306 int status = cx_modem_status (c->sys);
2307 int length = 0;
2308
2309 if (need_header)
2310 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n");
2311 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n",
2312 status & TIOCM_LE ? "On" : "-",
2313 status & TIOCM_DTR ? "On" : "-",
2314 status & TIOCM_DSR ? "On" : "-",
2315 status & TIOCM_RTS ? "On" : "-",
2316 status & TIOCM_CTS ? "On" : "-",
2317 status & TIOCM_CD ? "On" : "-");
2318 return length;
2319}
2320
2321static int print_stats (char *s, cx_chan_t *c, int need_header)
2322{
2323 int length = 0;
2324
2325 if (need_header)
2326 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n");
2327 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n",
2328 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts,
2329 c->ierrs, c->obytes, c->opkts, c->oerrs);
2330 return length;
2331}
2332
2333static int print_chan (char *s, cx_chan_t *c)
2334{
2335 drv_t *d = c->sys;
2336 int length = 0;
2337
2338 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num);
2339 if (d->chan->debug)
2340 length += sprintf (s + length, " debug=%d", d->chan->debug);
2341
2342 if (cx_get_baud (c))
2343 length += sprintf (s + length, " %ld", cx_get_baud (c));
2344 else
2345 length += sprintf (s + length, " extclock");
2346
2347 if (c->mode == M_HDLC) {
2348 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off");
2349 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off");
2350 }
2351
2352 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n");
2353 return length;
2354}
2355
2356static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook)
2357{
2358 drv_t *d = NG_NODE_PRIVATE (node);
2359 struct ng_mesg *msg;
2360 struct ng_mesg *resp = NULL;
2361 int error = 0;
2362
2363 if (!d)
2364 return EINVAL;
2365
2366 CX_DEBUG (d, ("Rcvmsg\n"));
2367 NGI_GET_MSG (item, msg);
2368 switch (msg->header.typecookie) {
2369 default:
2370 error = EINVAL;
2371 break;
2372
2373 case NGM_CX_COOKIE:
2374 printf ("Don't forget to implement\n");
2375 error = EINVAL;
2376 break;
2377
2378 case NGM_GENERIC_COOKIE:
2379 switch (msg->header.cmd) {
2380 default:
2381 error = EINVAL;
2382 break;
2383
2384 case NGM_TEXT_STATUS: {
2385 char *s;
2386 int l = 0;
2387 int dl = sizeof (struct ng_mesg) + 730;
2388
2389 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT);
2390 if (! resp) {
2391 error = ENOMEM;
2392 break;
2393 }
2394 bzero (resp, dl);
2395 s = (resp)->data;
2396 l += print_chan (s + l, d->chan);
2397 l += print_stats (s + l, d->chan, 1);
2398 l += print_modems (s + l, d->chan, 1);
2399 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRSIZ);
2400 }
2401 break;
2402 }
2403 break;
2404 }
2405 NG_RESPOND_MSG (error, node, item, resp);
2406 NG_FREE_MSG (msg);
2407 return error;
2408}
2409
2410static int ng_cx_rcvdata (hook_p hook, item_p item)
2411{
2412 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook));
2413 struct mbuf *m;
2414 struct ng_tag_prio *ptag;
2415 bdrv_t *bd;
2416 struct ifqueue *q;
2417 int s;
2418
2419 NGI_GET_M (item, m);
2420 NG_FREE_ITEM (item);
2421 if (! NG_HOOK_PRIVATE (hook) || ! d) {
2422 NG_FREE_M (m);
2423 return ENETDOWN;
2424 }
2425
2426 bd = d->board->sys;
2427 /* Check for high priority data */
2428 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE,
2429 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) )
2430 q = &d->hi_queue;
2431 else
2432 q = &d->lo_queue;
2433
2434 s = splhigh ();
2435 CX_LOCK (bd);
2436 IF_LOCK (q);
2437 if (_IF_QFULL (q)) {
2438 _IF_DROP (q);
2439 IF_UNLOCK (q);
2440 CX_UNLOCK (bd);
2441 splx (s);
2442 NG_FREE_M (m);
2443 return ENOBUFS;
2444 }
2445 _IF_ENQUEUE (q, m);
2446 IF_UNLOCK (q);
2447 cx_start (d);
2448 CX_UNLOCK (bd);
2449 splx (s);
2450 return 0;
2451}
2452
2453static int ng_cx_rmnode (node_p node)
2454{
2455 drv_t *d = NG_NODE_PRIVATE (node);
2456 bdrv_t *bd;
2457
2458 CX_DEBUG (d, ("Rmnode\n"));
2459 if (d && d->running) {
2460 int s = splhigh ();
2461 bd = d->board->sys;
2462 CX_LOCK (bd);
2463 cx_down (d);
2464 CX_UNLOCK (bd);
2465 splx (s);
2466 }
2467#ifdef KLD_MODULE
2468 if (node->nd_flags & NGF_REALLY_DIE) {
2469 NG_NODE_SET_PRIVATE (node, NULL);
2470 NG_NODE_UNREF (node);
2471 }
2472 NG_NODE_REVIVE(node); /* Persistant node */
2473#endif
2474 return 0;
2475}
2476
2477static int ng_cx_connect (hook_p hook)
2478{
2479 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2480
2481 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
2482 return 0;
2483}
2484
2485static int ng_cx_disconnect (hook_p hook)
2486{
2487 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2488 bdrv_t *bd = d->board->sys;
2489 int s;
2490
2491 s = splhigh ();
2492 CX_LOCK (bd);
2493 if (NG_HOOK_PRIVATE (hook))
2494 cx_down (d);
2495 CX_UNLOCK (bd);
2496 splx (s);
2497 /* If we were wait it than it reasserted now, just stop it. */
2498 if (!callout_drain (&d->timeout_handle))
2499 callout_stop (&d->timeout_handle);
2500 return 0;
2501}
2502#endif /*NETGRAPH*/
2503
2504static int cx_modevent (module_t mod, int type, void *unused)
2505{
2506 static int load_count = 0;
2507
2508 switch (type) {
2509 case MOD_LOAD:
2510#ifdef NETGRAPH
2511 if (ng_newtype (&typestruct))
2512 printf ("Failed to register ng_cx\n");
2513#endif
2514 ++load_count;
2515
2516 callout_init (&timeout_handle, CALLOUT_MPSAFE);
2517 callout_reset (&timeout_handle, hz*5, cx_timeout, 0);
2518 /* Software interrupt. */
2519 swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY,
2520 INTR_MPSAFE, &cx_fast_ih);
2521 break;
2522 case MOD_UNLOAD:
2523 if (load_count == 1) {
2524 printf ("Removing device entry for Sigma\n");
2525#ifdef NETGRAPH
2526 ng_rmtype (&typestruct);
2527#endif
2528 }
2529 /* If we were wait it than it reasserted now, just stop it. */
2530 if (!callout_drain (&timeout_handle))
2531 callout_stop (&timeout_handle);
2532 swi_remove (cx_fast_ih);
2533 --load_count;
2534 break;
2535 case MOD_SHUTDOWN:
2536 break;
2537 }
2538 return 0;
2539}
2540
2541#ifdef NETGRAPH
2542static struct ng_type typestruct = {
2543 .version = NG_ABI_VERSION,
2544 .name = NG_CX_NODE_TYPE,
2545 .constructor = ng_cx_constructor,
2546 .rcvmsg = ng_cx_rcvmsg,
2547 .shutdown = ng_cx_rmnode,
2548 .newhook = ng_cx_newhook,
2549 .connect = ng_cx_connect,
2550 .rcvdata = ng_cx_rcvdata,
2551 .disconnect = ng_cx_disconnect,
2552};
2553#endif /*NETGRAPH*/
2554
2555#ifdef NETGRAPH
2556MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION);
2557#else
2558MODULE_DEPEND (isa_cx, sppp, 1, 1, 1);
2559#endif
2560DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL);
2561MODULE_VERSION (cx, 1);
| 118};
119
120typedef struct _cx_dma_mem_t {
121 unsigned long phys;
122 void *virt;
123 size_t size;
124 bus_dma_tag_t dmat;
125 bus_dmamap_t mapp;
126} cx_dma_mem_t;
127
128typedef struct _drv_t {
129 char name [8];
130 cx_chan_t *chan;
131 cx_board_t *board;
132 cx_dma_mem_t dmamem;
133 struct tty *tty;
134 struct callout dcd_timeout_handle;
135 unsigned callout;
136 unsigned lock;
137 int open_dev;
138 int cd;
139 int running;
140#ifdef NETGRAPH
141 char nodename [NG_NODESIZ];
142 hook_p hook;
143 hook_p debug_hook;
144 node_p node;
145 struct ifqueue lo_queue;
146 struct ifqueue hi_queue;
147#else
148 struct ifqueue queue;
149 struct ifnet *ifp;
150#endif
151 short timeout;
152 struct callout timeout_handle;
153 struct cdev *devt;
154 async_q aqueue;
155#define CX_READ 1
156#define CX_WRITE 2
157 int intr_action;
158 short atimeout;
159} drv_t;
160
161typedef struct _bdrv_t {
162 cx_board_t *board;
163 struct resource *base_res;
164 struct resource *drq_res;
165 struct resource *irq_res;
166 int base_rid;
167 int drq_rid;
168 int irq_rid;
169 void *intrhand;
170 drv_t channel [NCHAN];
171 struct mtx cx_mtx;
172} bdrv_t;
173
174static driver_t cx_isa_driver = {
175 "cx",
176 cx_isa_methods,
177 sizeof (bdrv_t),
178};
179
180static devclass_t cx_devclass;
181
182extern long csigma_fw_len;
183extern const char *csigma_fw_version;
184extern const char *csigma_fw_date;
185extern const char *csigma_fw_copyright;
186extern const cr_dat_tst_t csigma_fw_tvec[];
187extern const u_char csigma_fw_data[];
188static void cx_oproc (struct tty *tp);
189static int cx_param (struct tty *tp, struct termios *t);
190static void cx_stop (struct tty *tp, int flag);
191static void cx_receive (cx_chan_t *c, char *data, int len);
192static void cx_transmit (cx_chan_t *c, void *attachment, int len);
193static void cx_error (cx_chan_t *c, int data);
194static void cx_modem (cx_chan_t *c);
195static void cx_up (drv_t *d);
196static void cx_start (drv_t *d);
197static void cx_softintr (void *);
198static void *cx_fast_ih;
199static void cx_down (drv_t *d);
200static void cx_watchdog (drv_t *d);
201static void cx_watchdog_timer (void *arg);
202static void cx_carrier (void *arg);
203
204#ifdef NETGRAPH
205extern struct ng_type typestruct;
206#else
207static void cx_ifstart (struct ifnet *ifp);
208static void cx_tlf (struct sppp *sp);
209static void cx_tls (struct sppp *sp);
210static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data);
211static void cx_initialize (void *softc);
212#endif
213
214static cx_board_t *adapter [NCX];
215static drv_t *channel [NCX*NCHAN];
216static struct callout led_timo [NCX];
217static struct callout timeout_handle;
218
219static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td);
220static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td);
221static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td);
222static struct cdevsw cx_cdevsw = {
223 .d_version = D_VERSION,
224 .d_open = cx_open,
225 .d_close = cx_close,
226 .d_ioctl = cx_ioctl,
227 .d_name = "cx",
228 .d_flags = D_TTY,
229};
230
231static int MY_SOFT_INTR;
232
233/*
234 * Print the mbuf chain, for debug purposes only.
235 */
236static void printmbuf (struct mbuf *m)
237{
238 printf ("mbuf:");
239 for (; m; m=m->m_next) {
240 if (m->m_flags & M_PKTHDR)
241 printf (" HDR %d:", m->m_pkthdr.len);
242 if (m->m_flags & M_EXT)
243 printf (" EXT:");
244 printf (" %d", m->m_len);
245 }
246 printf ("\n");
247}
248
249/*
250 * Make an mbuf from data.
251 */
252static struct mbuf *makembuf (void *buf, u_int len)
253{
254 struct mbuf *m, *o, *p;
255
256 MGETHDR (m, M_NOWAIT, MT_DATA);
257
258 if (! m)
259 return 0;
260
261 if (len >= MINCLSIZE)
262 MCLGET (m, M_NOWAIT);
263
264 m->m_pkthdr.len = len;
265 m->m_len = 0;
266
267 p = m;
268 while (len) {
269 u_int n = M_TRAILINGSPACE (p);
270 if (n > len)
271 n = len;
272 if (! n) {
273 /* Allocate new mbuf. */
274 o = p;
275 MGET (p, M_NOWAIT, MT_DATA);
276 if (! p) {
277 m_freem (m);
278 return 0;
279 }
280 if (len >= MINCLSIZE)
281 MCLGET (p, M_NOWAIT);
282 p->m_len = 0;
283 o->m_next = p;
284
285 n = M_TRAILINGSPACE (p);
286 if (n > len)
287 n = len;
288 }
289 bcopy (buf, mtod (p, caddr_t) + p->m_len, n);
290
291 p->m_len += n;
292 buf = n + (char*) buf;
293 len -= n;
294 }
295 return m;
296}
297
298/*
299 * Recover after lost transmit interrupts.
300 */
301static void cx_timeout (void *arg)
302{
303 drv_t *d;
304 int s, i, k;
305
306 for (i = 0; i < NCX; i++) {
307 if (adapter[i] == NULL)
308 continue;
309 for (k = 0; k < NCHAN; ++k) {
310 d = channel[i * NCHAN + k];
311 if (! d)
312 continue;
313 s = splhigh ();
314 CX_LOCK ((bdrv_t *)d->board->sys);
315 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) {
316 d->tty->t_state &= ~TS_BUSY;
317 if (d->tty->t_dev) {
318 d->intr_action |= CX_WRITE;
319 MY_SOFT_INTR = 1;
320 swi_sched (cx_fast_ih, 0);
321 }
322 CX_DEBUG (d, ("cx_timeout\n"));
323 }
324 if (d->atimeout)
325 d->atimeout--;
326 CX_UNLOCK ((bdrv_t *)d->board->sys);
327 splx (s);
328 }
329 }
330 callout_reset (&timeout_handle, hz*5, cx_timeout, 0);
331}
332
333static void cx_led_off (void *arg)
334{
335 cx_board_t *b = arg;
336 bdrv_t *bd = b->sys;
337 int s;
338
339 s = splhigh ();
340 CX_LOCK (bd);
341 cx_led (b, 0);
342 CX_UNLOCK (bd);
343 splx (s);
344}
345
346/*
347 * Activate interrupt handler from DDK.
348 */
349static void cx_intr (void *arg)
350{
351 bdrv_t *bd = arg;
352 cx_board_t *b = bd->board;
353#ifndef NETGRAPH
354 int i;
355#endif
356 int s = splhigh ();
357
358 CX_LOCK (bd);
359 /* Turn LED on. */
360 cx_led (b, 1);
361
362 cx_int_handler (b);
363
364 /* Turn LED off 50 msec later. */
365 callout_reset (&led_timo[b->num], hz/20, cx_led_off, b);
366 CX_UNLOCK (bd);
367 splx (s);
368
369#ifndef NETGRAPH
370 /* Pass packets in a lock-free state */
371 for (i = 0; i < NCHAN && b->chan[i].type; i++) {
372 drv_t *d = b->chan[i].sys;
373 struct mbuf *m;
374 if (!d || !d->running)
375 continue;
376 while (_IF_QLEN(&d->queue)) {
377 IF_DEQUEUE (&d->queue,m);
378 if (!m)
379 continue;
380 sppp_input (d->ifp, m);
381 }
382 }
383#endif
384}
385
386static int probe_irq (cx_board_t *b, int irq)
387{
388 int mask, busy, cnt;
389
390 /* Clear pending irq, if any. */
391 cx_probe_irq (b, -irq);
392 DELAY (100);
393 for (cnt=0; cnt<5; ++cnt) {
394 /* Get the mask of pending irqs, assuming they are busy.
395 * Activate the adapter on given irq. */
396 busy = cx_probe_irq (b, irq);
397 DELAY (100);
398
399 /* Get the mask of active irqs.
400 * Deactivate our irq. */
401 mask = cx_probe_irq (b, -irq);
402 DELAY (100);
403 if ((mask & ~busy) == 1 << irq) {
404 cx_probe_irq (b, 0);
405 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n",
406 b->num, irq, mask, busy); */
407 return 1;
408 }
409 }
410 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n",
411 b->num, irq, mask, busy); */
412 cx_probe_irq (b, 0);
413 return 0;
414}
415
416static short porttab [] = {
417 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
418 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
419};
420static char dmatab [] = { 7, 6, 5, 0 };
421static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 };
422
423static int cx_is_free_res (device_t dev, int rid, int type, u_long start,
424 u_long end, u_long count)
425{
426 struct resource *res;
427
428 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count,
429 RF_ALLOCATED)))
430 return 0;
431
432 bus_release_resource (dev, type, rid, res);
433
434 return 1;
435}
436
437static void cx_identify (driver_t *driver, device_t dev)
438{
439 u_long iobase, rescount;
440 int devcount;
441 device_t *devices;
442 device_t child;
443 devclass_t my_devclass;
444 int i, k;
445
446 if ((my_devclass = devclass_find ("cx")) == NULL)
447 return;
448
449 devclass_get_devices (my_devclass, &devices, &devcount);
450
451 if (devcount == 0) {
452 /* We should find all devices by our self. We could alter other
453 * devices, but we don't have a choise
454 */
455 for (i = 0; (iobase = porttab [i]) != 0; i++) {
456 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
457 iobase, iobase + NPORT, NPORT))
458 continue;
459 if (cx_probe_board (iobase, -1, -1) == 0)
460 continue;
461
462 devcount++;
463
464 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx",
465 -1);
466
467 if (child == NULL)
468 return;
469
470 device_set_desc_copy (child, "Cronyx Sigma");
471 device_set_driver (child, driver);
472 bus_set_resource (child, SYS_RES_IOPORT, 0,
473 iobase, NPORT);
474
475 if (devcount >= NCX)
476 break;
477 }
478 } else {
479 static short porttab [] = {
480 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
481 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
482 };
483 /* Lets check user choise.
484 */
485 for (k = 0; k < devcount; k++) {
486 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
487 &iobase, &rescount) != 0)
488 continue;
489
490 for (i = 0; porttab [i] != 0; i++) {
491 if (porttab [i] != iobase)
492 continue;
493 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
494 iobase, iobase + NPORT, NPORT))
495 continue;
496 if (cx_probe_board (iobase, -1, -1) == 0)
497 continue;
498 porttab [i] = -1;
499 device_set_desc_copy (devices[k], "Cronyx Sigma");
500 break;
501 }
502
503 if (porttab [i] == 0) {
504 device_delete_child (
505 device_get_parent (devices[k]),
506 devices [k]);
507 devices[k] = 0;
508 continue;
509 }
510 }
511 for (k = 0; k < devcount; k++) {
512 if (devices[k] == 0)
513 continue;
514 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
515 &iobase, &rescount) == 0)
516 continue;
517 for (i = 0; (iobase = porttab [i]) != 0; i++) {
518 if (porttab [i] == -1) {
519 continue;
520 }
521 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
522 iobase, iobase + NPORT, NPORT))
523 continue;
524 if (cx_probe_board (iobase, -1, -1) == 0)
525 continue;
526
527 bus_set_resource (devices[k], SYS_RES_IOPORT, 0,
528 iobase, NPORT);
529 porttab [i] = -1;
530 device_set_desc_copy (devices[k], "Cronyx Sigma");
531 break;
532 }
533 if (porttab [i] == 0) {
534 device_delete_child (
535 device_get_parent (devices[k]),
536 devices [k]);
537 }
538 }
539 free (devices, M_TEMP);
540 }
541
542 return;
543}
544
545static int cx_probe (device_t dev)
546{
547 int unit = device_get_unit (dev);
548 int i;
549 u_long iobase, rescount;
550
551 if (!device_get_desc (dev) ||
552 strcmp (device_get_desc (dev), "Cronyx Sigma"))
553 return ENXIO;
554
555 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) {
556 printf ("cx%d: Couldn't get IOPORT\n", unit);
557 return ENXIO;
558 }
559
560 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
561 iobase, iobase + NPORT, NPORT)) {
562 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase);
563 return ENXIO;
564 }
565
566 for (i = 0; porttab [i] != 0; i++) {
567 if (porttab [i] == iobase) {
568 porttab [i] = -1;
569 break;
570 }
571 }
572
573 if (porttab [i] == 0) {
574 return ENXIO;
575 }
576
577 if (!cx_probe_board (iobase, -1, -1)) {
578 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase);
579 return ENXIO;
580 }
581
582 return 0;
583}
584
585static void
586cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error)
587{
588 unsigned long *addr;
589
590 if (error)
591 return;
592
593 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
594 addr = arg;
595 *addr = segs->ds_addr;
596}
597
598static int
599cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem)
600{
601 int error;
602
603 error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT,
604 BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1,
605 dmem->size, 0, NULL, NULL, &dmem->dmat);
606 if (error) {
607 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
608 else printf ("cx%d: ", bnum);
609 printf ("couldn't allocate tag for dma memory\n");
610 return 0;
611 }
612 error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt,
613 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp);
614 if (error) {
615 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
616 else printf ("cx%d: ", bnum);
617 printf ("couldn't allocate mem for dma memory\n");
618 bus_dma_tag_destroy (dmem->dmat);
619 return 0;
620 }
621 error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt,
622 dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0);
623 if (error) {
624 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
625 else printf ("cx%d: ", bnum);
626 printf ("couldn't load mem map for dma memory\n");
627 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
628 bus_dma_tag_destroy (dmem->dmat);
629 return 0;
630 }
631 return 1;
632}
633
634static void
635cx_bus_dma_mem_free (cx_dma_mem_t *dmem)
636{
637 bus_dmamap_unload (dmem->dmat, dmem->mapp);
638 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
639 bus_dma_tag_destroy (dmem->dmat);
640}
641
642/*
643 * The adapter is present, initialize the driver structures.
644 */
645static int cx_attach (device_t dev)
646{
647 bdrv_t *bd = device_get_softc (dev);
648 u_long iobase, drq, irq, rescount;
649 int unit = device_get_unit (dev);
650 char *cx_ln = CX_LOCK_NAME;
651 cx_board_t *b;
652 cx_chan_t *c;
653 drv_t *d;
654 int i;
655 int s;
656
657 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit));
658
659 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount);
660 bd->base_rid = 0;
661 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid,
662 iobase, iobase + NPORT, NPORT, RF_ACTIVE);
663 if (! bd->base_res) {
664 printf ("cx%d: cannot allocate base address\n", unit);
665 return ENXIO;
666 }
667
668 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) {
669 for (i = 0; (drq = dmatab [i]) != 0; i++) {
670 if (!cx_is_free_res (dev, 0, SYS_RES_DRQ,
671 drq, drq + 1, 1))
672 continue;
673 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1);
674 break;
675 }
676
677 if (dmatab[i] == 0) {
678 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
679 bd->base_res);
680 printf ("cx%d: Couldn't get DRQ\n", unit);
681 return ENXIO;
682 }
683 }
684
685 bd->drq_rid = 0;
686 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid,
687 drq, drq + 1, 1, RF_ACTIVE);
688 if (! bd->drq_res) {
689 printf ("cx%d: cannot allocate drq\n", unit);
690 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
691 bd->base_res);
692 return ENXIO;
693 }
694
695 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) {
696 for (i = 0; (irq = irqtab [i]) != 0; i++) {
697 if (!cx_is_free_res (dev, 0, SYS_RES_IRQ,
698 irq, irq + 1, 1))
699 continue;
700 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1);
701 break;
702 }
703
704 if (irqtab[i] == 0) {
705 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
706 bd->drq_res);
707 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
708 bd->base_res);
709 printf ("cx%d: Couldn't get IRQ\n", unit);
710 return ENXIO;
711 }
712 }
713
714 bd->irq_rid = 0;
715 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid,
716 irq, irq + 1, 1, RF_ACTIVE);
717 if (! bd->irq_res) {
718 printf ("cx%d: Couldn't allocate irq\n", unit);
719 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
720 bd->drq_res);
721 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
722 bd->base_res);
723 return ENXIO;
724 }
725
726 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK);
727 if (!b) {
728 printf ("cx:%d: Couldn't allocate memory\n", unit);
729 return (ENXIO);
730 }
731 adapter[unit] = b;
732 bzero (b, sizeof(cx_board_t));
733
734 if (! cx_open_board (b, unit, iobase, irq, drq)) {
735 printf ("cx%d: error loading firmware\n", unit);
736 free (b, M_DEVBUF);
737 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
738 bd->irq_res);
739 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
740 bd->drq_res);
741 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
742 bd->base_res);
743 return ENXIO;
744 }
745
746 bd->board = b;
747
748 cx_ln[2] = '0' + unit;
749 mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE);
750 if (! probe_irq (b, irq)) {
751 printf ("cx%d: irq %ld not functional\n", unit, irq);
752 bd->board = 0;
753 adapter [unit] = 0;
754 mtx_destroy (&bd->cx_mtx);
755 free (b, M_DEVBUF);
756 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
757 bd->irq_res);
758 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
759 bd->drq_res);
760 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
761 bd->base_res);
762 return ENXIO;
763 }
764 b->sys = bd;
765 callout_init (&led_timo[b->num], CALLOUT_MPSAFE);
766 s = splhigh ();
767 if (bus_setup_intr (dev, bd->irq_res,
768 INTR_TYPE_NET|INTR_MPSAFE,
769 NULL, cx_intr, bd, &bd->intrhand)) {
770 printf ("cx%d: Can't setup irq %ld\n", unit, irq);
771 bd->board = 0;
772 b->sys = 0;
773 adapter [unit] = 0;
774 mtx_destroy (&bd->cx_mtx);
775 free (b, M_DEVBUF);
776 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
777 bd->irq_res);
778 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
779 bd->drq_res);
780 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
781 bd->base_res);
782 splx (s);
783 return ENXIO;
784 }
785
786 CX_LOCK (bd);
787 cx_init (b, b->num, b->port, irq, drq);
788 cx_setup_board (b, 0, 0, 0);
789 CX_UNLOCK (bd);
790
791 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name);
792
793 for (c=b->chan; c<b->chan+NCHAN; ++c) {
794 if (c->type == T_NONE)
795 continue;
796 d = &bd->channel[c->num];
797 d->dmamem.size = sizeof(cx_buf_t);
798 if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem))
799 continue;
800 d->board = b;
801 d->chan = c;
802 d->open_dev = 0;
803 c->sys = d;
804 channel [b->num*NCHAN + c->num] = d;
805 sprintf (d->name, "cx%d.%d", b->num, c->num);
806
807 switch (c->type) {
808 case T_SYNC_RS232:
809 case T_SYNC_V35:
810 case T_SYNC_RS449:
811 case T_UNIV:
812 case T_UNIV_RS232:
813 case T_UNIV_RS449:
814 case T_UNIV_V35:
815 callout_init (&d->timeout_handle, CALLOUT_MPSAFE);
816#ifdef NETGRAPH
817 if (ng_make_node_common (&typestruct, &d->node) != 0) {
818 printf ("%s: cannot make common node\n", d->name);
819 channel [b->num*NCHAN + c->num] = 0;
820 c->sys = 0;
821 cx_bus_dma_mem_free (&d->dmamem);
822 continue;
823 }
824 NG_NODE_SET_PRIVATE (d->node, d);
825 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE,
826 c->board->num*NCHAN + c->num);
827 if (ng_name_node (d->node, d->nodename)) {
828 printf ("%s: cannot name node\n", d->nodename);
829 NG_NODE_UNREF (d->node);
830 channel [b->num*NCHAN + c->num] = 0;
831 c->sys = 0;
832 cx_bus_dma_mem_free (&d->dmamem);
833 continue;
834 }
835 d->lo_queue.ifq_maxlen = ifqmaxlen;
836 d->hi_queue.ifq_maxlen = ifqmaxlen;
837 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF);
838 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF);
839#else /*NETGRAPH*/
840 d->ifp = if_alloc(IFT_PPP);
841 if (d->ifp == NULL) {
842 printf ("%s: cannot if_alloc() common interface\n",
843 d->name);
844 channel [b->num*NCHAN + c->num] = 0;
845 c->sys = 0;
846 cx_bus_dma_mem_free (&d->dmamem);
847 continue;
848 }
849 d->ifp->if_softc = d;
850 if_initname (d->ifp, "cx", b->num * NCHAN + c->num);
851 d->ifp->if_mtu = PP_MTU;
852 d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
853 d->ifp->if_ioctl = cx_sioctl;
854 d->ifp->if_start = cx_ifstart;
855 d->ifp->if_init = cx_initialize;
856 d->queue.ifq_maxlen = 2;
857 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF);
858 sppp_attach (d->ifp);
859 if_attach (d->ifp);
860 IFP2SP(d->ifp)->pp_tlf = cx_tlf;
861 IFP2SP(d->ifp)->pp_tls = cx_tls;
862 /* If BPF is in the kernel, call the attach for it.
863 * Size of PPP header is 4 bytes. */
864 bpfattach (d->ifp, DLT_PPP, 4);
865#endif /*NETGRAPH*/
866 }
867 d->tty = ttyalloc ();
868 d->tty->t_open = cx_topen;
869 d->tty->t_close = cx_tclose;
870 d->tty->t_param = cx_param;
871 d->tty->t_stop = cx_stop;
872 d->tty->t_modem = cx_tmodem;
873 d->tty->t_oproc = cx_oproc;
874 d->tty->t_sc = d;
875 CX_LOCK (bd);
876 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys);
877 cx_register_receive (c, &cx_receive);
878 cx_register_transmit (c, &cx_transmit);
879 cx_register_error (c, &cx_error);
880 cx_register_modem (c, &cx_modem);
881 CX_UNLOCK (bd);
882
883 ttycreate(d->tty, TS_CALLOUT, "x%r%r", b->num, c->num);
884 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num);
885 d->devt->si_drv1 = d;
886 callout_init (&d->dcd_timeout_handle, CALLOUT_MPSAFE);
887 }
888 splx (s);
889
890 return 0;
891}
892
893static int cx_detach (device_t dev)
894{
895 bdrv_t *bd = device_get_softc (dev);
896 cx_board_t *b = bd->board;
897 cx_chan_t *c;
898 int s;
899
900 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized"));
901
902 s = splhigh ();
903 CX_LOCK (bd);
904 /* Check if the device is busy (open). */
905 for (c = b->chan; c < b->chan + NCHAN; ++c) {
906 drv_t *d = (drv_t*) c->sys;
907
908 if (!d || d->chan->type == T_NONE)
909 continue;
910 if (d->lock) {
911 CX_UNLOCK (bd);
912 splx (s);
913 return EBUSY;
914 }
915 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
916 (d->open_dev|0x2)) {
917 CX_UNLOCK (bd);
918 splx (s);
919 return EBUSY;
920 }
921 if (d->running) {
922 CX_UNLOCK (bd);
923 splx (s);
924 return EBUSY;
925 }
926 }
927
928 /* Deactivate the timeout routine. And soft interrupt*/
929 callout_stop (&led_timo[b->num]);
930
931 for (c = b->chan; c < b->chan + NCHAN; ++c) {
932 drv_t *d = c->sys;
933
934 if (!d || d->chan->type == T_NONE)
935 continue;
936
937 callout_stop (&d->dcd_timeout_handle);
938 }
939 CX_UNLOCK (bd);
940 bus_teardown_intr (dev, bd->irq_res, bd->intrhand);
941 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res);
942
943 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res);
944
945 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res);
946
947 CX_LOCK (bd);
948 cx_close_board (b);
949
950 /* Detach the interfaces, free buffer memory. */
951 for (c = b->chan; c < b->chan + NCHAN; ++c) {
952 drv_t *d = (drv_t*) c->sys;
953
954 if (!d || d->chan->type == T_NONE)
955 continue;
956
957 if (d->tty) {
958 ttyfree (d->tty);
959 d->tty = NULL;
960 }
961
962 callout_stop (&d->timeout_handle);
963#ifdef NETGRAPH
964 if (d->node) {
965 ng_rmnode_self (d->node);
966 NG_NODE_UNREF (d->node);
967 d->node = NULL;
968 }
969 mtx_destroy (&d->lo_queue.ifq_mtx);
970 mtx_destroy (&d->hi_queue.ifq_mtx);
971#else
972 /* Detach from the packet filter list of interfaces. */
973 bpfdetach (d->ifp);
974 /* Detach from the sync PPP list. */
975 sppp_detach (d->ifp);
976
977 if_detach (d->ifp);
978 if_free(d->ifp);
979 /* XXXRIK: check interconnection with irq handler */
980 IF_DRAIN (&d->queue);
981 mtx_destroy (&d->queue.ifq_mtx);
982#endif
983 destroy_dev (d->devt);
984 }
985
986 cx_led_off (b);
987 CX_UNLOCK (bd);
988 callout_drain (&led_timo[b->num]);
989 for (c = b->chan; c < b->chan + NCHAN; ++c) {
990 drv_t *d = c->sys;
991
992 if (!d || d->chan->type == T_NONE)
993 continue;
994
995 callout_drain (&d->dcd_timeout_handle);
996 callout_drain (&d->timeout_handle);
997 }
998 splx (s);
999
1000 s = splhigh ();
1001 for (c = b->chan; c < b->chan + NCHAN; ++c) {
1002 drv_t *d = (drv_t*) c->sys;
1003
1004 if (!d || d->chan->type == T_NONE)
1005 continue;
1006
1007 /* Deallocate buffers. */
1008 cx_bus_dma_mem_free (&d->dmamem);
1009 }
1010 bd->board = 0;
1011 adapter [b->num] = 0;
1012 free (b, M_DEVBUF);
1013 splx (s);
1014
1015 mtx_destroy (&bd->cx_mtx);
1016
1017 return 0;
1018}
1019
1020#ifndef NETGRAPH
1021static void cx_ifstart (struct ifnet *ifp)
1022{
1023 drv_t *d = ifp->if_softc;
1024 bdrv_t *bd = d->board->sys;
1025
1026 CX_LOCK (bd);
1027 cx_start (d);
1028 CX_UNLOCK (bd);
1029}
1030
1031static void cx_tlf (struct sppp *sp)
1032{
1033 drv_t *d = SP2IFP(sp)->if_softc;
1034
1035 CX_DEBUG (d, ("cx_tlf\n"));
1036/* cx_set_dtr (d->chan, 0);*/
1037/* cx_set_rts (d->chan, 0);*/
1038 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO))
1039 sp->pp_down (sp);
1040}
1041
1042static void cx_tls (struct sppp *sp)
1043{
1044 drv_t *d = SP2IFP(sp)->if_softc;
1045
1046 CX_DEBUG (d, ("cx_tls\n"));
1047 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO))
1048 sp->pp_up (sp);
1049}
1050
1051/*
1052 * Initialization of interface.
1053 * It seems to be never called by upper level.
1054 */
1055static void cx_initialize (void *softc)
1056{
1057 drv_t *d = softc;
1058
1059 CX_DEBUG (d, ("cx_initialize\n"));
1060}
1061
1062/*
1063 * Process an ioctl request.
1064 */
1065static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data)
1066{
1067 drv_t *d = ifp->if_softc;
1068 bdrv_t *bd = d->board->sys;
1069 int error, s, was_up, should_be_up;
1070
1071 /* No socket ioctls while the channel is in async mode. */
1072 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC)
1073 return EBUSY;
1074
1075 /* Socket ioctls on slave subchannels are not allowed. */
1076 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
1077 error = sppp_ioctl (ifp, cmd, data);
1078 if (error)
1079 return error;
1080
1081 s = splhigh ();
1082 CX_LOCK (bd);
1083 if (! (ifp->if_flags & IFF_DEBUG))
1084 d->chan->debug = 0;
1085 else
1086 d->chan->debug = d->chan->debug_shadow;
1087 CX_UNLOCK (bd);
1088 splx (s);
1089
1090 switch (cmd) {
1091 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0;
1092 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0;
1093 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0;
1094 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break;
1095 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break;
1096 }
1097
1098 /* We get here only in case of SIFFLAGS or SIFADDR. */
1099 s = splhigh ();
1100 CX_LOCK (bd);
1101 should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
1102 if (!was_up && should_be_up) {
1103 /* Interface goes up -- start it. */
1104 cx_up (d);
1105 cx_start (d);
1106 } else if (was_up && !should_be_up) {
1107 /* Interface is going down -- stop it. */
1108 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/
1109 cx_down (d);
1110 }
1111 CX_UNLOCK (bd);
1112 splx (s);
1113 return 0;
1114}
1115#endif /*NETGRAPH*/
1116
1117/*
1118 * Stop the interface. Called on splimp().
1119 */
1120static void cx_down (drv_t *d)
1121{
1122 int s = splhigh ();
1123 CX_DEBUG (d, ("cx_down\n"));
1124 cx_set_dtr (d->chan, 0);
1125 cx_set_rts (d->chan, 0);
1126 d->running = 0;
1127 callout_stop (&d->timeout_handle);
1128 splx (s);
1129}
1130
1131/*
1132 * Start the interface. Called on splimp().
1133 */
1134static void cx_up (drv_t *d)
1135{
1136 int s = splhigh ();
1137 CX_DEBUG (d, ("cx_up\n"));
1138 cx_set_dtr (d->chan, 1);
1139 cx_set_rts (d->chan, 1);
1140 d->running = 1;
1141 splx (s);
1142}
1143
1144/*
1145 * Start output on the (slave) interface. Get another datagram to send
1146 * off of the interface queue, and copy it to the interface
1147 * before starting the output.
1148 */
1149static void cx_send (drv_t *d)
1150{
1151 struct mbuf *m;
1152 u_short len;
1153
1154 CX_DEBUG2 (d, ("cx_send\n"));
1155
1156 /* No output if the interface is down. */
1157 if (! d->running)
1158 return;
1159
1160 /* No output if the modem is off. */
1161 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan))
1162 return;
1163
1164 if (cx_buf_free (d->chan)) {
1165 /* Get the packet to send. */
1166#ifdef NETGRAPH
1167 IF_DEQUEUE (&d->hi_queue, m);
1168 if (! m)
1169 IF_DEQUEUE (&d->lo_queue, m);
1170#else
1171 m = sppp_dequeue (d->ifp);
1172#endif
1173 if (! m)
1174 return;
1175#ifndef NETGRAPH
1176 BPF_MTAP (d->ifp, m);
1177#endif
1178 len = m_length (m, NULL);
1179 if (! m->m_next)
1180 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t),
1181 len, 0);
1182 else {
1183 u_char buf [DMABUFSZ];
1184 m_copydata (m, 0, len, buf);
1185 cx_send_packet (d->chan, buf, len, 0);
1186 }
1187 m_freem (m);
1188
1189 /* Set up transmit timeout, 10 seconds. */
1190 d->timeout = 10;
1191 }
1192#ifndef NETGRAPH
1193 d->ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1194#endif
1195}
1196
1197/*
1198 * Start output on the interface.
1199 * Always called on splimp().
1200 */
1201static void cx_start (drv_t *d)
1202{
1203 int s = splhigh ();
1204 if (d->running) {
1205 if (! d->chan->dtr)
1206 cx_set_dtr (d->chan, 1);
1207 if (! d->chan->rts)
1208 cx_set_rts (d->chan, 1);
1209 cx_send (d);
1210 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
1211 }
1212 splx (s);
1213}
1214
1215/*
1216 * Handle transmit timeouts.
1217 * Recover after lost transmit interrupts.
1218 * Always called on splimp().
1219 */
1220static void cx_watchdog (drv_t *d)
1221{
1222
1223 CX_DEBUG (d, ("device timeout\n"));
1224 if (d->running) {
1225 cx_setup_chan (d->chan);
1226 cx_start_chan (d->chan, 0, 0);
1227 cx_set_dtr (d->chan, 1);
1228 cx_set_rts (d->chan, 1);
1229 cx_start (d);
1230 }
1231}
1232
1233static void cx_watchdog_timer (void *arg)
1234{
1235 drv_t *d = arg;
1236 bdrv_t *bd = d->board->sys;
1237
1238 CX_LOCK (bd);
1239 if (d->timeout == 1)
1240 cx_watchdog (d);
1241 if (d->timeout)
1242 d->timeout--;
1243 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
1244 CX_UNLOCK (bd);
1245}
1246
1247/*
1248 * Transmit callback function.
1249 */
1250static void cx_transmit (cx_chan_t *c, void *attachment, int len)
1251{
1252 drv_t *d = c->sys;
1253
1254 if (!d)
1255 return;
1256
1257 if (c->mode == M_ASYNC && d->tty) {
1258 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH);
1259 d->atimeout = 0;
1260 if (d->tty->t_dev) {
1261 d->intr_action |= CX_WRITE;
1262 MY_SOFT_INTR = 1;
1263 swi_sched (cx_fast_ih, 0);
1264 }
1265 return;
1266 }
1267 d->timeout = 0;
1268#ifndef NETGRAPH
1269 ++d->ifp->if_opackets;
1270 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1271#endif
1272 cx_start (d);
1273}
1274
1275/*
1276 * Process the received packet.
1277 */
1278static void cx_receive (cx_chan_t *c, char *data, int len)
1279{
1280 drv_t *d = c->sys;
1281 struct mbuf *m;
1282 char *cc = data;
1283#ifdef NETGRAPH
1284 int error;
1285#endif
1286
1287 if (!d)
1288 return;
1289
1290 if (c->mode == M_ASYNC && d->tty) {
1291 if (d->tty->t_state & TS_ISOPEN) {
1292 async_q *q = &d->aqueue;
1293 int size = BF_SZ - 1 - AQ_GSZ (q);
1294
1295 if (len <= 0 && !size)
1296 return;
1297
1298 if (len > size) {
1299 c->ierrs++;
1300 cx_error (c, CX_OVERRUN);
1301 len = size - 1;
1302 }
1303
1304 while (len--) {
1305 AQ_PUSH (q, *(unsigned char *)cc);
1306 cc++;
1307 }
1308
1309 d->intr_action |= CX_READ;
1310 MY_SOFT_INTR = 1;
1311 swi_sched (cx_fast_ih, 0);
1312 }
1313 return;
1314 }
1315 if (! d->running)
1316 return;
1317
1318 m = makembuf (data, len);
1319 if (! m) {
1320 CX_DEBUG (d, ("no memory for packet\n"));
1321#ifndef NETGRAPH
1322 ++d->ifp->if_iqdrops;
1323#endif
1324 return;
1325 }
1326 if (c->debug > 1)
1327 printmbuf (m);
1328#ifdef NETGRAPH
1329 m->m_pkthdr.rcvif = 0;
1330 NG_SEND_DATA_ONLY (error, d->hook, m);
1331#else
1332 ++d->ifp->if_ipackets;
1333 m->m_pkthdr.rcvif = d->ifp;
1334 /* Check if there's a BPF listener on this interface.
1335 * If so, hand off the raw packet to bpf. */
1336 BPF_TAP (d->ifp, data, len);
1337 IF_ENQUEUE (&d->queue, m);
1338#endif
1339}
1340
1341#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\
1342 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\
1343 && (!(tp->t_iflag & PARMRK)\
1344 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\
1345 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\
1346 && linesw[tp->t_line]->l_rint == ttyinput)
1347
1348/*
1349 * Error callback function.
1350 */
1351static void cx_error (cx_chan_t *c, int data)
1352{
1353 drv_t *d = c->sys;
1354 async_q *q;
1355
1356 if (!d)
1357 return;
1358
1359 q = &(d->aqueue);
1360
1361 switch (data) {
1362 case CX_FRAME:
1363 CX_DEBUG (d, ("frame error\n"));
1364 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1365 && (AQ_GSZ (q) < BF_SZ - 1)
1366 && (!CONDITION((&d->tty->t_termios), (d->tty))
1367 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1368 AQ_PUSH (q, TTY_FE);
1369 d->intr_action |= CX_READ;
1370 MY_SOFT_INTR = 1;
1371 swi_sched (cx_fast_ih, 0);
1372 }
1373#ifndef NETGRAPH
1374 else
1375 ++d->ifp->if_ierrors;
1376#endif
1377 break;
1378 case CX_CRC:
1379 CX_DEBUG (d, ("crc error\n"));
1380 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1381 && (AQ_GSZ (q) < BF_SZ - 1)
1382 && (!CONDITION((&d->tty->t_termios), (d->tty))
1383 || !(d->tty->t_iflag & INPCK)
1384 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1385 AQ_PUSH (q, TTY_PE);
1386 d->intr_action |= CX_READ;
1387 MY_SOFT_INTR = 1;
1388 swi_sched (cx_fast_ih, 0);
1389 }
1390#ifndef NETGRAPH
1391 else
1392 ++d->ifp->if_ierrors;
1393#endif
1394 break;
1395 case CX_OVERRUN:
1396 CX_DEBUG (d, ("overrun error\n"));
1397#ifdef TTY_OE
1398 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1399 && (AQ_GSZ (q) < BF_SZ - 1)
1400 && (!CONDITION((&d->tty->t_termios), (d->tty)))) {
1401 AQ_PUSH (q, TTY_OE);
1402 d->intr_action |= CX_READ;
1403 MY_SOFT_INTR = 1;
1404 swi_sched (cx_fast_ih, 0);
1405 }
1406#endif
1407#ifndef NETGRAPH
1408 else {
1409 ++d->ifp->if_collisions;
1410 ++d->ifp->if_ierrors;
1411 }
1412#endif
1413 break;
1414 case CX_OVERFLOW:
1415 CX_DEBUG (d, ("overflow error\n"));
1416#ifndef NETGRAPH
1417 if (c->mode != M_ASYNC)
1418 ++d->ifp->if_ierrors;
1419#endif
1420 break;
1421 case CX_UNDERRUN:
1422 CX_DEBUG (d, ("underrun error\n"));
1423 if (c->mode != M_ASYNC) {
1424 d->timeout = 0;
1425#ifndef NETGRAPH
1426 ++d->ifp->if_oerrors;
1427 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1428#endif
1429 cx_start (d);
1430 }
1431 break;
1432 case CX_BREAK:
1433 CX_DEBUG (d, ("break error\n"));
1434 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1435 && (AQ_GSZ (q) < BF_SZ - 1)
1436 && (!CONDITION((&d->tty->t_termios), (d->tty))
1437 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) {
1438 AQ_PUSH (q, TTY_BI);
1439 d->intr_action |= CX_READ;
1440 MY_SOFT_INTR = 1;
1441 swi_sched (cx_fast_ih, 0);
1442 }
1443#ifndef NETGRAPH
1444 else
1445 ++d->ifp->if_ierrors;
1446#endif
1447 break;
1448 default:
1449 CX_DEBUG (d, ("error #%d\n", data));
1450 }
1451}
1452
1453static int cx_topen (struct tty *tp, struct cdev *dev)
1454{
1455 bdrv_t *bd;
1456 drv_t *d;
1457
1458 d = tp->t_sc;
1459 CX_DEBUG2 (d, ("cx_open (serial)\n"));
1460
1461 bd = d->board->sys;
1462
1463 if (d->chan->mode != M_ASYNC)
1464 return (EBUSY);
1465
1466 d->open_dev |= 0x2;
1467 CX_LOCK (bd);
1468 cx_start_chan (d->chan, 0, 0);
1469 cx_set_dtr (d->chan, 1);
1470 cx_set_rts (d->chan, 1);
1471 d->cd = cx_get_cd (d->chan);
1472 CX_UNLOCK (bd);
1473
1474 CX_DEBUG2 (d, ("cx_open done\n"));
1475
1476 return 0;
1477}
1478
1479static void cx_tclose (struct tty *tp)
1480{
1481 drv_t *d;
1482 bdrv_t *bd;
1483
1484 d = tp->t_sc;
1485 CX_DEBUG2 (d, ("cx_close\n"));
1486 bd = d->board->sys;
1487 CX_LOCK (bd);
1488 /* Disable receiver.
1489 * Transmitter continues sending the queued data. */
1490 cx_enable_receive (d->chan, 0);
1491 CX_UNLOCK (bd);
1492 d->open_dev &= ~0x2;
1493}
1494
1495static int cx_tmodem (struct tty *tp, int sigon, int sigoff)
1496{
1497 drv_t *d;
1498 bdrv_t *bd;
1499
1500 d = tp->t_sc;
1501 bd = d->board->sys;
1502
1503 CX_LOCK (bd);
1504 if (!sigon && !sigoff) {
1505 if (cx_get_dsr (d->chan)) sigon |= SER_DSR;
1506 if (cx_get_cd (d->chan)) sigon |= SER_DCD;
1507 if (cx_get_cts (d->chan)) sigon |= SER_CTS;
1508 if (d->chan->dtr) sigon |= SER_DTR;
1509 if (d->chan->rts) sigon |= SER_RTS;
1510 CX_UNLOCK (bd);
1511 return sigon;
1512 }
1513
1514 if (sigon & SER_DTR)
1515 cx_set_dtr (d->chan, 1);
1516 if (sigoff & SER_DTR)
1517 cx_set_dtr (d->chan, 0);
1518 if (sigon & SER_RTS)
1519 cx_set_rts (d->chan, 1);
1520 if (sigoff & SER_RTS)
1521 cx_set_rts (d->chan, 0);
1522 CX_UNLOCK (bd);
1523
1524 return (0);
1525}
1526
1527static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td)
1528{
1529 int unit;
1530 drv_t *d;
1531
1532 d = dev->si_drv1;
1533 unit = d->chan->num;
1534
1535 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n",
1536 unit, flag, mode));
1537
1538 d->open_dev |= 0x1;
1539
1540 CX_DEBUG2 (d, ("cx_open done\n"));
1541
1542 return 0;
1543}
1544
1545static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td)
1546{
1547 drv_t *d;
1548
1549 d = dev->si_drv1;
1550 CX_DEBUG2 (d, ("cx_close\n"));
1551 d->open_dev &= ~0x1;
1552 return 0;
1553}
1554
1555static int cx_modem_status (drv_t *d)
1556{
1557 bdrv_t *bd = d->board->sys;
1558 int status = 0, s = splhigh ();
1559 CX_LOCK (bd);
1560 /* Already opened by someone or network interface is up? */
1561 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1562 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running))
1563 status = TIOCM_LE; /* always enabled while open */
1564
1565 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR;
1566 if (cx_get_cd (d->chan)) status |= TIOCM_CD;
1567 if (cx_get_cts (d->chan)) status |= TIOCM_CTS;
1568 if (d->chan->dtr) status |= TIOCM_DTR;
1569 if (d->chan->rts) status |= TIOCM_RTS;
1570 CX_UNLOCK (bd);
1571 splx (s);
1572 return status;
1573}
1574
1575static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1576{
1577 drv_t *d;
1578 bdrv_t *bd;
1579 cx_chan_t *c;
1580 struct serial_statistics *st;
1581 int error, s;
1582 char mask[16];
1583
1584 d = dev->si_drv1;
1585 c = d->chan;
1586
1587 bd = d->board->sys;
1588
1589 switch (cmd) {
1590 case SERIAL_GETREGISTERED:
1591 CX_DEBUG2 (d, ("ioctl: getregistered\n"));
1592 bzero (mask, sizeof(mask));
1593 for (s=0; s<NCX*NCHAN; ++s)
1594 if (channel [s])
1595 mask [s/8] |= 1 << (s & 7);
1596 bcopy (mask, data, sizeof (mask));
1597 return 0;
1598
1599 case SERIAL_GETPORT:
1600 CX_DEBUG2 (d, ("ioctl: getport\n"));
1601 s = splhigh ();
1602 CX_LOCK (bd);
1603 *(int *)data = cx_get_port (c);
1604 CX_UNLOCK (bd);
1605 splx (s);
1606 if (*(int *)data<0)
1607 return (EINVAL);
1608 else
1609 return 0;
1610
1611 case SERIAL_SETPORT:
1612 CX_DEBUG2 (d, ("ioctl: setproto\n"));
1613 /* Only for superuser! */
1614 error = priv_check (td, PRIV_DRIVER);
1615 if (error)
1616 return error;
1617
1618 s = splhigh ();
1619 CX_LOCK (bd);
1620 cx_set_port (c, *(int *)data);
1621 CX_UNLOCK (bd);
1622 splx (s);
1623 return 0;
1624
1625#ifndef NETGRAPH
1626 case SERIAL_GETPROTO:
1627 CX_DEBUG2 (d, ("ioctl: getproto\n"));
1628 s = splhigh ();
1629 CX_LOCK (bd);
1630 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" :
1631 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" :
1632 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp");
1633 CX_UNLOCK (bd);
1634 splx (s);
1635 return 0;
1636
1637 case SERIAL_SETPROTO:
1638 CX_DEBUG2 (d, ("ioctl: setproto\n"));
1639 /* Only for superuser! */
1640 error = priv_check (td, PRIV_DRIVER);
1641 if (error)
1642 return error;
1643 if (c->mode == M_ASYNC)
1644 return EBUSY;
1645 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING)
1646 return EBUSY;
1647 if (! strcmp ("cisco", (char*)data)) {
1648 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR);
1649 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE;
1650 d->ifp->if_flags |= PP_CISCO;
1651 } else if (! strcmp ("fr", (char*)data)) {
1652 d->ifp->if_flags &= ~(PP_CISCO);
1653 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE;
1654 } else if (! strcmp ("ppp", (char*)data)) {
1655 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE);
1656 d->ifp->if_flags &= ~(PP_CISCO);
1657 } else
1658 return EINVAL;
1659 return 0;
1660
1661 case SERIAL_GETKEEPALIVE:
1662 CX_DEBUG2 (d, ("ioctl: getkeepalive\n"));
1663 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) ||
1664 (d->ifp->if_flags & PP_CISCO) ||
1665 (c->mode == M_ASYNC))
1666 return EINVAL;
1667 s = splhigh ();
1668 CX_LOCK (bd);
1669 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0;
1670 CX_UNLOCK (bd);
1671 splx (s);
1672 return 0;
1673
1674 case SERIAL_SETKEEPALIVE:
1675 CX_DEBUG2 (d, ("ioctl: setkeepalive\n"));
1676 /* Only for superuser! */
1677 error = priv_check (td, PRIV_DRIVER);
1678 if (error)
1679 return error;
1680 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) ||
1681 (d->ifp->if_flags & PP_CISCO))
1682 return EINVAL;
1683 s = splhigh ();
1684 CX_LOCK (bd);
1685 if (*(int*)data)
1686 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE;
1687 else
1688 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE;
1689 CX_UNLOCK (bd);
1690 splx (s);
1691 return 0;
1692#endif /*NETGRAPH*/
1693
1694 case SERIAL_GETMODE:
1695 CX_DEBUG2 (d, ("ioctl: getmode\n"));
1696 s = splhigh ();
1697 CX_LOCK (bd);
1698 *(int*)data = (c->mode == M_ASYNC) ?
1699 SERIAL_ASYNC : SERIAL_HDLC;
1700 CX_UNLOCK (bd);
1701 splx (s);
1702 return 0;
1703
1704 case SERIAL_SETMODE:
1705 CX_DEBUG2 (d, ("ioctl: setmode\n"));
1706 /* Only for superuser! */
1707 error = priv_check (td, PRIV_DRIVER);
1708 if (error)
1709 return error;
1710
1711 /* Somebody is waiting for carrier? */
1712 if (d->lock)
1713 return EBUSY;
1714 /* /dev/ttyXX is already opened by someone? */
1715 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1716 (d->open_dev|0x2))
1717 return EBUSY;
1718 /* Network interface is up?
1719 * Cannot change to async mode. */
1720 if (c->mode != M_ASYNC && d->running &&
1721 (*(int*)data == SERIAL_ASYNC))
1722 return EBUSY;
1723
1724 s = splhigh ();
1725 CX_LOCK (bd);
1726 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) {
1727 cx_set_mode (c, M_ASYNC);
1728 cx_enable_receive (c, 0);
1729 cx_enable_transmit (c, 0);
1730 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) {
1731 if (d->ifp->if_flags & IFF_DEBUG)
1732 c->debug = c->debug_shadow;
1733 cx_set_mode (c, M_HDLC);
1734 cx_enable_receive (c, 1);
1735 cx_enable_transmit (c, 1);
1736 }
1737 CX_UNLOCK (bd);
1738 splx (s);
1739 return 0;
1740
1741 case SERIAL_GETSTAT:
1742 CX_DEBUG2 (d, ("ioctl: getestat\n"));
1743 st = (struct serial_statistics*) data;
1744 s = splhigh ();
1745 CX_LOCK (bd);
1746 st->rintr = c->rintr;
1747 st->tintr = c->tintr;
1748 st->mintr = c->mintr;
1749 st->ibytes = c->ibytes;
1750 st->ipkts = c->ipkts;
1751 st->ierrs = c->ierrs;
1752 st->obytes = c->obytes;
1753 st->opkts = c->opkts;
1754 st->oerrs = c->oerrs;
1755 CX_UNLOCK (bd);
1756 splx (s);
1757 return 0;
1758
1759 case SERIAL_CLRSTAT:
1760 CX_DEBUG2 (d, ("ioctl: clrstat\n"));
1761 /* Only for superuser! */
1762 error = priv_check (td, PRIV_DRIVER);
1763 if (error)
1764 return error;
1765 s = splhigh ();
1766 CX_LOCK (bd);
1767 c->rintr = 0;
1768 c->tintr = 0;
1769 c->mintr = 0;
1770 c->ibytes = 0;
1771 c->ipkts = 0;
1772 c->ierrs = 0;
1773 c->obytes = 0;
1774 c->opkts = 0;
1775 c->oerrs = 0;
1776 CX_UNLOCK (bd);
1777 splx (s);
1778 return 0;
1779
1780 case SERIAL_GETBAUD:
1781 CX_DEBUG2 (d, ("ioctl: getbaud\n"));
1782 if (c->mode == M_ASYNC)
1783 return EINVAL;
1784 s = splhigh ();
1785 CX_LOCK (bd);
1786 *(long*)data = cx_get_baud(c);
1787 CX_UNLOCK (bd);
1788 splx (s);
1789 return 0;
1790
1791 case SERIAL_SETBAUD:
1792 CX_DEBUG2 (d, ("ioctl: setbaud\n"));
1793 /* Only for superuser! */
1794 error = priv_check (td, PRIV_DRIVER);
1795 if (error)
1796 return error;
1797 if (c->mode == M_ASYNC)
1798 return EINVAL;
1799 s = splhigh ();
1800 CX_LOCK (bd);
1801 cx_set_baud (c, *(long*)data);
1802 CX_UNLOCK (bd);
1803 splx (s);
1804 return 0;
1805
1806 case SERIAL_GETLOOP:
1807 CX_DEBUG2 (d, ("ioctl: getloop\n"));
1808 if (c->mode == M_ASYNC)
1809 return EINVAL;
1810 s = splhigh ();
1811 CX_LOCK (bd);
1812 *(int*)data = cx_get_loop (c);
1813 CX_UNLOCK (bd);
1814 splx (s);
1815 return 0;
1816
1817 case SERIAL_SETLOOP:
1818 CX_DEBUG2 (d, ("ioctl: setloop\n"));
1819 /* Only for superuser! */
1820 error = priv_check (td, PRIV_DRIVER);
1821 if (error)
1822 return error;
1823 if (c->mode == M_ASYNC)
1824 return EINVAL;
1825 s = splhigh ();
1826 CX_LOCK (bd);
1827 cx_set_loop (c, *(int*)data);
1828 CX_UNLOCK (bd);
1829 splx (s);
1830 return 0;
1831
1832 case SERIAL_GETDPLL:
1833 CX_DEBUG2 (d, ("ioctl: getdpll\n"));
1834 if (c->mode == M_ASYNC)
1835 return EINVAL;
1836 s = splhigh ();
1837 CX_LOCK (bd);
1838 *(int*)data = cx_get_dpll (c);
1839 CX_UNLOCK (bd);
1840 splx (s);
1841 return 0;
1842
1843 case SERIAL_SETDPLL:
1844 CX_DEBUG2 (d, ("ioctl: setdpll\n"));
1845 /* Only for superuser! */
1846 error = priv_check (td, PRIV_DRIVER);
1847 if (error)
1848 return error;
1849 if (c->mode == M_ASYNC)
1850 return EINVAL;
1851 s = splhigh ();
1852 CX_LOCK (bd);
1853 cx_set_dpll (c, *(int*)data);
1854 CX_UNLOCK (bd);
1855 splx (s);
1856 return 0;
1857
1858 case SERIAL_GETNRZI:
1859 CX_DEBUG2 (d, ("ioctl: getnrzi\n"));
1860 if (c->mode == M_ASYNC)
1861 return EINVAL;
1862 s = splhigh ();
1863 CX_LOCK (bd);
1864 *(int*)data = cx_get_nrzi (c);
1865 CX_UNLOCK (bd);
1866 splx (s);
1867 return 0;
1868
1869 case SERIAL_SETNRZI:
1870 CX_DEBUG2 (d, ("ioctl: setnrzi\n"));
1871 /* Only for superuser! */
1872 error = priv_check (td, PRIV_DRIVER);
1873 if (error)
1874 return error;
1875 if (c->mode == M_ASYNC)
1876 return EINVAL;
1877 s = splhigh ();
1878 CX_LOCK (bd);
1879 cx_set_nrzi (c, *(int*)data);
1880 CX_UNLOCK (bd);
1881 splx (s);
1882 return 0;
1883
1884 case SERIAL_GETDEBUG:
1885 CX_DEBUG2 (d, ("ioctl: getdebug\n"));
1886 s = splhigh ();
1887 CX_LOCK (bd);
1888 *(int*)data = c->debug;
1889 CX_UNLOCK (bd);
1890 splx (s);
1891 return 0;
1892
1893 case SERIAL_SETDEBUG:
1894 CX_DEBUG2 (d, ("ioctl: setdebug\n"));
1895 /* Only for superuser! */
1896 error = priv_check (td, PRIV_DRIVER);
1897 if (error)
1898 return error;
1899 s = splhigh ();
1900 CX_LOCK (bd);
1901#ifndef NETGRAPH
1902 if (c->mode == M_ASYNC) {
1903 c->debug = *(int*)data;
1904 } else {
1905 /*
1906 * The debug_shadow is always greater than zero for
1907 * logic simplicity. For switching debug off the
1908 * IFF_DEBUG is responsible (for !M_ASYNC mode).
1909 */
1910 c->debug_shadow = (*(int*)data) ? (*(int*)data) : 1;
1911 if (d->ifp->if_flags & IFF_DEBUG)
1912 c->debug = c->debug_shadow;
1913 }
1914#else
1915 c->debug = *(int*)data;
1916#endif
1917 CX_UNLOCK (bd);
1918 splx (s);
1919 return 0;
1920 }
1921
1922 switch (cmd) {
1923 case TIOCSDTR: /* Set DTR */
1924 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n"));
1925 s = splhigh ();
1926 CX_LOCK (bd);
1927 cx_set_dtr (c, 1);
1928 CX_UNLOCK (bd);
1929 splx (s);
1930 return 0;
1931
1932 case TIOCCDTR: /* Clear DTR */
1933 CX_DEBUG2 (d, ("ioctl: tioccdtr\n"));
1934 s = splhigh ();
1935 CX_LOCK (bd);
1936 cx_set_dtr (c, 0);
1937 CX_UNLOCK (bd);
1938 splx (s);
1939 return 0;
1940
1941 case TIOCMSET: /* Set DTR/RTS */
1942 CX_DEBUG2 (d, ("ioctl: tiocmset\n"));
1943 s = splhigh ();
1944 CX_LOCK (bd);
1945 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0);
1946 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0);
1947 CX_UNLOCK (bd);
1948 splx (s);
1949 return 0;
1950
1951 case TIOCMBIS: /* Add DTR/RTS */
1952 CX_DEBUG2 (d, ("ioctl: tiocmbis\n"));
1953 s = splhigh ();
1954 CX_LOCK (bd);
1955 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1);
1956 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1);
1957 CX_UNLOCK (bd);
1958 splx (s);
1959 return 0;
1960
1961 case TIOCMBIC: /* Clear DTR/RTS */
1962 CX_DEBUG2 (d, ("ioctl: tiocmbic\n"));
1963 s = splhigh ();
1964 CX_LOCK (bd);
1965 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0);
1966 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0);
1967 CX_UNLOCK (bd);
1968 splx (s);
1969 return 0;
1970
1971 case TIOCMGET: /* Get modem status */
1972 CX_DEBUG2 (d, ("ioctl: tiocmget\n"));
1973 *(int*)data = cx_modem_status (d);
1974 return 0;
1975
1976 }
1977
1978 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd));
1979 return ENOTTY;
1980}
1981
1982void cx_softintr (void *unused)
1983{
1984 drv_t *d;
1985 bdrv_t *bd;
1986 async_q *q;
1987 int i, s, ic, k;
1988 while (MY_SOFT_INTR) {
1989 MY_SOFT_INTR = 0;
1990 for (i=0; i<NCX*NCHAN; ++i) {
1991 d = channel [i];
1992 if (!d || !d->chan || d->chan->type == T_NONE
1993 || d->chan->mode != M_ASYNC || !d->tty
1994 || !d->tty->t_dev)
1995 continue;
1996 bd = d->board->sys;
1997 s = splhigh ();
1998 CX_LOCK (bd);
1999 if (d->intr_action & CX_READ) {
2000 q = &(d->aqueue);
2001 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) {
2002 k = AQ_GSZ(q);
2003 if (d->tty->t_rawq.c_cc + k >
2004 d->tty->t_ihiwat
2005 && (d->tty->t_cflag & CRTS_IFLOW
2006 || d->tty->t_iflag & IXOFF)
2007 && !(d->tty->t_state & TS_TBLOCK))
2008 ttyblock(d->tty);
2009 d->tty->t_rawcc += k;
2010 while (k>0) {
2011 k--;
2012 AQ_POP (q, ic);
2013 CX_UNLOCK (bd);
2014 splx (s);
2015 putc (ic, &d->tty->t_rawq);
2016 s = splhigh ();
2017 CX_LOCK (bd);
2018 }
2019 ttwakeup(d->tty);
2020 if (d->tty->t_state & TS_TTSTOP
2021 && (d->tty->t_iflag & IXANY
2022 || d->tty->t_cc[VSTART] ==
2023 d->tty->t_cc[VSTOP])) {
2024 d->tty->t_state &= ~TS_TTSTOP;
2025 d->tty->t_lflag &= ~FLUSHO;
2026 d->intr_action |= CX_WRITE;
2027 }
2028 } else {
2029 while (q->end != q->beg) {
2030 AQ_POP (q, ic);
2031 CX_UNLOCK (bd);
2032 splx (s);
2033 ttyld_rint (d->tty, ic);
2034 s = splhigh ();
2035 CX_LOCK (bd);
2036 }
2037 }
2038 d->intr_action &= ~CX_READ;
2039 }
2040 splx (s);
2041 CX_UNLOCK (bd);
2042
2043 s = splhigh ();
2044 CX_LOCK (bd);
2045 if (d->intr_action & CX_WRITE) {
2046 if (d->tty->t_line)
2047 ttyld_start (d->tty);
2048 else
2049 cx_oproc (d->tty);
2050 d->intr_action &= ~CX_WRITE;
2051 }
2052 CX_UNLOCK (bd);
2053 splx (s);
2054
2055 }
2056 }
2057}
2058
2059/*
2060 * Fill transmitter buffer with data.
2061 */
2062static void cx_oproc (struct tty *tp)
2063{
2064 int s, k;
2065 drv_t *d;
2066 bdrv_t *bd;
2067 static u_char buf[DMABUFSZ];
2068 u_char *p;
2069 u_short len = 0, sublen = 0;
2070
2071 d = tp->t_sc;
2072 bd = d->board->sys;
2073
2074 CX_DEBUG2 (d, ("cx_oproc\n"));
2075
2076 s = splhigh ();
2077 CX_LOCK (bd);
2078
2079 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts)
2080 cx_set_rts (d->chan, 0);
2081 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts)
2082 cx_set_rts (d->chan, 1);
2083
2084 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) {
2085 /* Start transmitter. */
2086 cx_enable_transmit (d->chan, 1);
2087
2088 /* Is it busy? */
2089 if (! cx_buf_free (d->chan)) {
2090 tp->t_state |= TS_BUSY;
2091 CX_UNLOCK (bd);
2092 splx (s);
2093 return;
2094 }
2095 if (tp->t_iflag & IXOFF) {
2096 p = (buf + (DMABUFSZ/2));
2097 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
2098 k = sublen;
2099 while (k--) {
2100 /* Send XON/XOFF out of band. */
2101 if (*p == tp->t_cc[VSTOP]) {
2102 cx_xflow_ctl (d->chan, 0);
2103 p++;
2104 continue;
2105 }
2106 if (*p == tp->t_cc[VSTART]) {
2107 cx_xflow_ctl (d->chan, 1);
2108 p++;
2109 continue;
2110 }
2111 buf[len] = *p;
2112 len++;
2113 p++;
2114 }
2115 } else {
2116 p = buf;
2117 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
2118 }
2119 if (len) {
2120 cx_send_packet (d->chan, buf, len, 0);
2121 tp->t_state |= TS_BUSY;
2122 d->atimeout = 10;
2123 CX_DEBUG2 (d, ("out %d bytes\n", len));
2124 }
2125 }
2126 ttwwakeup (tp);
2127 CX_UNLOCK (bd);
2128 splx (s);
2129}
2130
2131static int cx_param (struct tty *tp, struct termios *t)
2132{
2133 drv_t *d;
2134 bdrv_t *bd;
2135 int s, bits, parity;
2136
2137 d = tp->t_sc;
2138 bd = d->board->sys;
2139
2140 s = splhigh ();
2141 CX_LOCK (bd);
2142 if (t->c_ospeed == 0) {
2143 /* Clear DTR and RTS. */
2144 cx_set_dtr (d->chan, 0);
2145 CX_UNLOCK (bd);
2146 splx (s);
2147 CX_DEBUG2 (d, ("cx_param (hangup)\n"));
2148 return 0;
2149 }
2150 CX_DEBUG2 (d, ("cx_param\n"));
2151
2152 /* Check requested parameters. */
2153 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) {
2154 CX_UNLOCK (bd);
2155 splx (s);
2156 return EINVAL;
2157 }
2158 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) {
2159 CX_UNLOCK (bd);
2160 splx (s);
2161 return EINVAL;
2162 }
2163
2164 /* And copy them to tty and channel structures. */
2165 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed;
2166 tp->t_cflag = t->c_cflag;
2167
2168 /* Set character length and parity mode. */
2169 switch (t->c_cflag & CSIZE) {
2170 default:
2171 case CS8: bits = 8; break;
2172 case CS7: bits = 7; break;
2173 case CS6: bits = 6; break;
2174 case CS5: bits = 5; break;
2175 }
2176
2177 parity = ((t->c_cflag & PARENB) ? 1 : 0) *
2178 (1 + ((t->c_cflag & PARODD) ? 0 : 1));
2179
2180 /* Set current channel number. */
2181 if (! d->chan->dtr)
2182 cx_set_dtr (d->chan, 1);
2183
2184 ttyldoptim (tp);
2185 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB),
2186 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS),
2187 (t->c_iflag & IXON), (t->c_iflag & IXANY),
2188 t->c_cc[VSTART], t->c_cc[VSTOP]);
2189 CX_UNLOCK (bd);
2190 splx (s);
2191 return 0;
2192}
2193
2194/*
2195 * Stop output on a line
2196 */
2197static void cx_stop (struct tty *tp, int flag)
2198{
2199 drv_t *d;
2200 bdrv_t *bd;
2201 int s;
2202
2203 d = tp->t_sc;
2204 bd = d->board->sys;
2205
2206 s = splhigh ();
2207 CX_LOCK (bd);
2208 if (tp->t_state & TS_BUSY) {
2209 /* Stop transmitter */
2210 CX_DEBUG2 (d, ("cx_stop\n"));
2211 cx_transmitter_ctl (d->chan, 0);
2212 }
2213 CX_UNLOCK (bd);
2214 splx (s);
2215}
2216
2217/*
2218 * Process the (delayed) carrier signal setup.
2219 */
2220static void cx_carrier (void *arg)
2221{
2222 drv_t *d = arg;
2223 bdrv_t *bd = d->board->sys;
2224 cx_chan_t *c = d->chan;
2225 int s, cd;
2226
2227 s = splhigh ();
2228 CX_LOCK (bd);
2229 cd = cx_get_cd (c);
2230 if (d->cd != cd) {
2231 if (cd) {
2232 CX_DEBUG (d, ("carrier on\n"));
2233 d->cd = 1;
2234 CX_UNLOCK (bd);
2235 splx (s);
2236 if (d->tty)
2237 ttyld_modem(d->tty, 1);
2238 } else {
2239 CX_DEBUG (d, ("carrier loss\n"));
2240 d->cd = 0;
2241 CX_UNLOCK (bd);
2242 splx (s);
2243 if (d->tty)
2244 ttyld_modem(d->tty, 0);
2245 }
2246 } else {
2247 CX_UNLOCK (bd);
2248 splx (s);
2249 }
2250}
2251
2252/*
2253 * Modem signal callback function.
2254 */
2255static void cx_modem (cx_chan_t *c)
2256{
2257 drv_t *d = c->sys;
2258
2259 if (!d || c->mode != M_ASYNC)
2260 return;
2261 /* Handle carrier detect/loss. */
2262 /* Carrier changed - delay processing DCD for a while
2263 * to give both sides some time to initialize. */
2264 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d);
2265}
2266
2267#ifdef NETGRAPH
2268static int ng_cx_constructor (node_p node)
2269{
2270 drv_t *d = NG_NODE_PRIVATE (node);
2271 CX_DEBUG (d, ("Constructor\n"));
2272 return EINVAL;
2273}
2274
2275static int ng_cx_newhook (node_p node, hook_p hook, const char *name)
2276{
2277 int s;
2278 drv_t *d = NG_NODE_PRIVATE (node);
2279 bdrv_t *bd = d->board->sys;
2280
2281 if (d->chan->mode == M_ASYNC)
2282 return EINVAL;
2283
2284 /* Attach debug hook */
2285 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) {
2286 NG_HOOK_SET_PRIVATE (hook, NULL);
2287 d->debug_hook = hook;
2288 return 0;
2289 }
2290
2291 /* Check for raw hook */
2292 if (strcmp (name, NG_CX_HOOK_RAW) != 0)
2293 return EINVAL;
2294
2295 NG_HOOK_SET_PRIVATE (hook, d);
2296 d->hook = hook;
2297 s = splhigh ();
2298 CX_LOCK (bd);
2299 cx_up (d);
2300 CX_UNLOCK (bd);
2301 splx (s);
2302 return 0;
2303}
2304
2305static int print_modems (char *s, cx_chan_t *c, int need_header)
2306{
2307 int status = cx_modem_status (c->sys);
2308 int length = 0;
2309
2310 if (need_header)
2311 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n");
2312 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n",
2313 status & TIOCM_LE ? "On" : "-",
2314 status & TIOCM_DTR ? "On" : "-",
2315 status & TIOCM_DSR ? "On" : "-",
2316 status & TIOCM_RTS ? "On" : "-",
2317 status & TIOCM_CTS ? "On" : "-",
2318 status & TIOCM_CD ? "On" : "-");
2319 return length;
2320}
2321
2322static int print_stats (char *s, cx_chan_t *c, int need_header)
2323{
2324 int length = 0;
2325
2326 if (need_header)
2327 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n");
2328 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n",
2329 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts,
2330 c->ierrs, c->obytes, c->opkts, c->oerrs);
2331 return length;
2332}
2333
2334static int print_chan (char *s, cx_chan_t *c)
2335{
2336 drv_t *d = c->sys;
2337 int length = 0;
2338
2339 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num);
2340 if (d->chan->debug)
2341 length += sprintf (s + length, " debug=%d", d->chan->debug);
2342
2343 if (cx_get_baud (c))
2344 length += sprintf (s + length, " %ld", cx_get_baud (c));
2345 else
2346 length += sprintf (s + length, " extclock");
2347
2348 if (c->mode == M_HDLC) {
2349 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off");
2350 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off");
2351 }
2352
2353 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n");
2354 return length;
2355}
2356
2357static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook)
2358{
2359 drv_t *d = NG_NODE_PRIVATE (node);
2360 struct ng_mesg *msg;
2361 struct ng_mesg *resp = NULL;
2362 int error = 0;
2363
2364 if (!d)
2365 return EINVAL;
2366
2367 CX_DEBUG (d, ("Rcvmsg\n"));
2368 NGI_GET_MSG (item, msg);
2369 switch (msg->header.typecookie) {
2370 default:
2371 error = EINVAL;
2372 break;
2373
2374 case NGM_CX_COOKIE:
2375 printf ("Don't forget to implement\n");
2376 error = EINVAL;
2377 break;
2378
2379 case NGM_GENERIC_COOKIE:
2380 switch (msg->header.cmd) {
2381 default:
2382 error = EINVAL;
2383 break;
2384
2385 case NGM_TEXT_STATUS: {
2386 char *s;
2387 int l = 0;
2388 int dl = sizeof (struct ng_mesg) + 730;
2389
2390 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT);
2391 if (! resp) {
2392 error = ENOMEM;
2393 break;
2394 }
2395 bzero (resp, dl);
2396 s = (resp)->data;
2397 l += print_chan (s + l, d->chan);
2398 l += print_stats (s + l, d->chan, 1);
2399 l += print_modems (s + l, d->chan, 1);
2400 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRSIZ);
2401 }
2402 break;
2403 }
2404 break;
2405 }
2406 NG_RESPOND_MSG (error, node, item, resp);
2407 NG_FREE_MSG (msg);
2408 return error;
2409}
2410
2411static int ng_cx_rcvdata (hook_p hook, item_p item)
2412{
2413 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook));
2414 struct mbuf *m;
2415 struct ng_tag_prio *ptag;
2416 bdrv_t *bd;
2417 struct ifqueue *q;
2418 int s;
2419
2420 NGI_GET_M (item, m);
2421 NG_FREE_ITEM (item);
2422 if (! NG_HOOK_PRIVATE (hook) || ! d) {
2423 NG_FREE_M (m);
2424 return ENETDOWN;
2425 }
2426
2427 bd = d->board->sys;
2428 /* Check for high priority data */
2429 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE,
2430 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) )
2431 q = &d->hi_queue;
2432 else
2433 q = &d->lo_queue;
2434
2435 s = splhigh ();
2436 CX_LOCK (bd);
2437 IF_LOCK (q);
2438 if (_IF_QFULL (q)) {
2439 _IF_DROP (q);
2440 IF_UNLOCK (q);
2441 CX_UNLOCK (bd);
2442 splx (s);
2443 NG_FREE_M (m);
2444 return ENOBUFS;
2445 }
2446 _IF_ENQUEUE (q, m);
2447 IF_UNLOCK (q);
2448 cx_start (d);
2449 CX_UNLOCK (bd);
2450 splx (s);
2451 return 0;
2452}
2453
2454static int ng_cx_rmnode (node_p node)
2455{
2456 drv_t *d = NG_NODE_PRIVATE (node);
2457 bdrv_t *bd;
2458
2459 CX_DEBUG (d, ("Rmnode\n"));
2460 if (d && d->running) {
2461 int s = splhigh ();
2462 bd = d->board->sys;
2463 CX_LOCK (bd);
2464 cx_down (d);
2465 CX_UNLOCK (bd);
2466 splx (s);
2467 }
2468#ifdef KLD_MODULE
2469 if (node->nd_flags & NGF_REALLY_DIE) {
2470 NG_NODE_SET_PRIVATE (node, NULL);
2471 NG_NODE_UNREF (node);
2472 }
2473 NG_NODE_REVIVE(node); /* Persistant node */
2474#endif
2475 return 0;
2476}
2477
2478static int ng_cx_connect (hook_p hook)
2479{
2480 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2481
2482 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
2483 return 0;
2484}
2485
2486static int ng_cx_disconnect (hook_p hook)
2487{
2488 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2489 bdrv_t *bd = d->board->sys;
2490 int s;
2491
2492 s = splhigh ();
2493 CX_LOCK (bd);
2494 if (NG_HOOK_PRIVATE (hook))
2495 cx_down (d);
2496 CX_UNLOCK (bd);
2497 splx (s);
2498 /* If we were wait it than it reasserted now, just stop it. */
2499 if (!callout_drain (&d->timeout_handle))
2500 callout_stop (&d->timeout_handle);
2501 return 0;
2502}
2503#endif /*NETGRAPH*/
2504
2505static int cx_modevent (module_t mod, int type, void *unused)
2506{
2507 static int load_count = 0;
2508
2509 switch (type) {
2510 case MOD_LOAD:
2511#ifdef NETGRAPH
2512 if (ng_newtype (&typestruct))
2513 printf ("Failed to register ng_cx\n");
2514#endif
2515 ++load_count;
2516
2517 callout_init (&timeout_handle, CALLOUT_MPSAFE);
2518 callout_reset (&timeout_handle, hz*5, cx_timeout, 0);
2519 /* Software interrupt. */
2520 swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY,
2521 INTR_MPSAFE, &cx_fast_ih);
2522 break;
2523 case MOD_UNLOAD:
2524 if (load_count == 1) {
2525 printf ("Removing device entry for Sigma\n");
2526#ifdef NETGRAPH
2527 ng_rmtype (&typestruct);
2528#endif
2529 }
2530 /* If we were wait it than it reasserted now, just stop it. */
2531 if (!callout_drain (&timeout_handle))
2532 callout_stop (&timeout_handle);
2533 swi_remove (cx_fast_ih);
2534 --load_count;
2535 break;
2536 case MOD_SHUTDOWN:
2537 break;
2538 }
2539 return 0;
2540}
2541
2542#ifdef NETGRAPH
2543static struct ng_type typestruct = {
2544 .version = NG_ABI_VERSION,
2545 .name = NG_CX_NODE_TYPE,
2546 .constructor = ng_cx_constructor,
2547 .rcvmsg = ng_cx_rcvmsg,
2548 .shutdown = ng_cx_rmnode,
2549 .newhook = ng_cx_newhook,
2550 .connect = ng_cx_connect,
2551 .rcvdata = ng_cx_rcvdata,
2552 .disconnect = ng_cx_disconnect,
2553};
2554#endif /*NETGRAPH*/
2555
2556#ifdef NETGRAPH
2557MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION);
2558#else
2559MODULE_DEPEND (isa_cx, sppp, 1, 1, 1);
2560#endif
2561DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL);
2562MODULE_VERSION (cx, 1);
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