27
28#include <sys/param.h>
29
30#include <sys/systm.h>
31#include <sys/kernel.h>
32#include <sys/module.h>
33#include <sys/priv.h>
34#include <sys/proc.h>
35#include <sys/mbuf.h>
36#include <sys/sockio.h>
37#include <sys/malloc.h>
38#include <sys/socket.h>
39#include <sys/sysctl.h>
40#include <sys/conf.h>
41#include <sys/errno.h>
42#include <sys/serial.h>
43#include <sys/tty.h>
44#include <sys/bus.h>
45#include <machine/bus.h>
46#include <sys/rman.h>
47#include <isa/isavar.h>
48#include <sys/fcntl.h>
49#include <sys/interrupt.h>
50#include <vm/vm.h>
51#include <vm/pmap.h>
52#include <net/if.h>
53#include <machine/cpufunc.h>
54#include <machine/cserial.h>
55#include <machine/resource.h>
56#include <dev/cx/machdep.h>
57#include <dev/cx/cxddk.h>
58#include <dev/cx/cronyxfw.h>
59#include "opt_ng_cronyx.h"
60#ifdef NETGRAPH_CRONYX
61# include "opt_netgraph.h"
62# include <netgraph/ng_message.h>
63# include <netgraph/netgraph.h>
64# include <dev/cx/ng_cx.h>
65#else
66# include <net/if_types.h>
67# include <net/if_sppp.h>
68# define PP_CISCO IFF_LINK2
69# include <net/bpf.h>
70#endif
71
72#define NCX 1
73
74/* If we don't have Cronyx's sppp version, we don't have fr support via sppp */
75#ifndef PP_FR
76#define PP_FR 0
77#endif
78
79#define CX_DEBUG(d,s) ({if (d->chan->debug) {\
80 printf ("%s: ", d->name); printf s;}})
81#define CX_DEBUG2(d,s) ({if (d->chan->debug>1) {\
82 printf ("%s: ", d->name); printf s;}})
83
84#define CX_LOCK_NAME "cxX"
85
86#define CX_LOCK(_bd) mtx_lock (&(_bd)->cx_mtx)
87#define CX_UNLOCK(_bd) mtx_unlock (&(_bd)->cx_mtx)
88#define CX_LOCK_ASSERT(_bd) mtx_assert (&(_bd)->cx_mtx, MA_OWNED)
89
90typedef struct _async_q {
91 int beg;
92 int end;
93 #define BF_SZ 14400
94 int buf[BF_SZ+1];
95} async_q;
96
97#define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ)
98#define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\
99 (q)->end = ((q)->end + 1)%BF_SZ;}
100#define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\
101 (q)->beg = ((q)->beg + 1)%BF_SZ;}
102
103static void cx_identify __P((driver_t *, device_t));
104static int cx_probe __P((device_t));
105static int cx_attach __P((device_t));
106static int cx_detach __P((device_t));
107static t_open_t cx_topen;
108static t_modem_t cx_tmodem;
109static t_close_t cx_tclose;
110
111static device_method_t cx_isa_methods [] = {
112 DEVMETHOD(device_identify, cx_identify),
113 DEVMETHOD(device_probe, cx_probe),
114 DEVMETHOD(device_attach, cx_attach),
115 DEVMETHOD(device_detach, cx_detach),
116
117 DEVMETHOD_END
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);
| 27
28#include <sys/param.h>
29
30#include <sys/systm.h>
31#include <sys/kernel.h>
32#include <sys/module.h>
33#include <sys/priv.h>
34#include <sys/proc.h>
35#include <sys/mbuf.h>
36#include <sys/sockio.h>
37#include <sys/malloc.h>
38#include <sys/socket.h>
39#include <sys/sysctl.h>
40#include <sys/conf.h>
41#include <sys/errno.h>
42#include <sys/serial.h>
43#include <sys/tty.h>
44#include <sys/bus.h>
45#include <machine/bus.h>
46#include <sys/rman.h>
47#include <isa/isavar.h>
48#include <sys/fcntl.h>
49#include <sys/interrupt.h>
50#include <vm/vm.h>
51#include <vm/pmap.h>
52#include <net/if.h>
53#include <machine/cpufunc.h>
54#include <machine/cserial.h>
55#include <machine/resource.h>
56#include <dev/cx/machdep.h>
57#include <dev/cx/cxddk.h>
58#include <dev/cx/cronyxfw.h>
59#include "opt_ng_cronyx.h"
60#ifdef NETGRAPH_CRONYX
61# include "opt_netgraph.h"
62# include <netgraph/ng_message.h>
63# include <netgraph/netgraph.h>
64# include <dev/cx/ng_cx.h>
65#else
66# include <net/if_types.h>
67# include <net/if_sppp.h>
68# define PP_CISCO IFF_LINK2
69# include <net/bpf.h>
70#endif
71
72#define NCX 1
73
74/* If we don't have Cronyx's sppp version, we don't have fr support via sppp */
75#ifndef PP_FR
76#define PP_FR 0
77#endif
78
79#define CX_DEBUG(d,s) ({if (d->chan->debug) {\
80 printf ("%s: ", d->name); printf s;}})
81#define CX_DEBUG2(d,s) ({if (d->chan->debug>1) {\
82 printf ("%s: ", d->name); printf s;}})
83
84#define CX_LOCK_NAME "cxX"
85
86#define CX_LOCK(_bd) mtx_lock (&(_bd)->cx_mtx)
87#define CX_UNLOCK(_bd) mtx_unlock (&(_bd)->cx_mtx)
88#define CX_LOCK_ASSERT(_bd) mtx_assert (&(_bd)->cx_mtx, MA_OWNED)
89
90typedef struct _async_q {
91 int beg;
92 int end;
93 #define BF_SZ 14400
94 int buf[BF_SZ+1];
95} async_q;
96
97#define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ)
98#define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\
99 (q)->end = ((q)->end + 1)%BF_SZ;}
100#define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\
101 (q)->beg = ((q)->beg + 1)%BF_SZ;}
102
103static void cx_identify __P((driver_t *, device_t));
104static int cx_probe __P((device_t));
105static int cx_attach __P((device_t));
106static int cx_detach __P((device_t));
107static t_open_t cx_topen;
108static t_modem_t cx_tmodem;
109static t_close_t cx_tclose;
110
111static device_method_t cx_isa_methods [] = {
112 DEVMETHOD(device_identify, cx_identify),
113 DEVMETHOD(device_probe, cx_probe),
114 DEVMETHOD(device_attach, cx_attach),
115 DEVMETHOD(device_detach, cx_detach),
116
117 DEVMETHOD_END
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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