1/*
2 * Cronyx-Sigma adapter driver for FreeBSD.
3 * Supports PPP/HDLC and Cisco/HDLC protocol in synchronous mode,
4 * and asyncronous channels with full modem control.
5 * Keepalive protocol implemented in both Cisco and PPP modes.
6 *
7 * Copyright (C) 1994-2002 Cronyx Engineering.
8 * Author: Serge Vakulenko, <vak@cronyx.ru>
9 *
10 * Copyright (C) 1999-2004 Cronyx Engineering.
11 * Rewritten on DDK, ported to NETGRAPH, rewritten for FreeBSD 3.x-5.x by
12 * Kurakin Roman, <rik@cronyx.ru>
13 *
14 * This software is distributed with NO WARRANTIES, not even the implied
15 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16 *
17 * Authors grant any other persons or organisations a permission to use,
18 * modify and redistribute this software in source and binary forms,
19 * as long as this message is kept with the software, all derivative
20 * works or modified versions.
21 *
22 * Cronyx Id: if_cx.c,v 1.1.2.23 2004/02/26 17:56:40 rik Exp $
23 */
24#include <sys/cdefs.h>
25__FBSDID("$FreeBSD: head/sys/dev/cx/if_cx.c 130585 2004-06-16 09:47:26Z phk $");
26
27#include <sys/param.h>
28
29#if __FreeBSD_version >= 500000
30# define NCX 1
31#else
32# include "cx.h"
33#endif
34
35#if NCX > 0
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/module.h>
39#include <sys/proc.h>
40#include <sys/mbuf.h>
41#include <sys/sockio.h>
42#include <sys/malloc.h>
43#include <sys/socket.h>
44#include <sys/conf.h>
45#include <sys/errno.h>
46#include <sys/tty.h>
47#if __FreeBSD_version >= 400000
48# include <sys/bus.h>
49# include <machine/bus.h>
50# include <sys/rman.h>
51# include <isa/isavar.h>
52#endif
53#include <sys/fcntl.h>
54#include <sys/interrupt.h>
55#include <vm/vm.h>
56#include <vm/pmap.h>
57#include <net/if.h>
58#include <machine/cpufunc.h>
59#include <machine/cserial.h>
60#include <machine/clock.h>
61#if __FreeBSD_version < 500000
62#include <machine/ipl.h>
63#include <i386/isa/isa_device.h>
64#endif
65#if __FreeBSD_version >= 400000
66# include <machine/resource.h>
67# if __FreeBSD_version <= 501000
68# include <i386/isa/intr_machdep.h>
69# endif
70#endif
71#if __FreeBSD_version >= 400000
72# include <dev/cx/machdep.h>
73# include <dev/cx/cxddk.h>
74# include <dev/cx/cronyxfw.h>
75#else
76# include <i386/isa/cronyx/machdep.h>
77# include <i386/isa/cronyx/cxddk.h>
78# include <i386/isa/cronyx/cronyxfw.h>
79#endif
80#include "opt_ng_cronyx.h"
81#ifdef NETGRAPH_CRONYX
82# include "opt_netgraph.h"
83# include <netgraph/ng_message.h>
84# include <netgraph/netgraph.h>
85# if __FreeBSD_version >= 400000
86# include <dev/cx/ng_cx.h>
87# else
88# include <netgraph/ng_cx.h>
89# endif
90#else
91# include <net/if_types.h>
92# if __FreeBSD_version < 500000
93# include "sppp.h"
94# if NSPPP <= 0
95# error The device cx requires sppp or netgraph.
96# endif
97# endif
98# include <net/if_sppp.h>
99# define PP_CISCO IFF_LINK2
100#if __FreeBSD_version < 400000
101# include <bpfilter.h>
102# if NBPFILTER > 0
103# include <net/bpf.h>
104# endif
105#else
106# if __FreeBSD_version < 500000
107# include <bpf.h>
108# endif
109# include <net/bpf.h>
110# define NBPFILTER NBPF
111#endif
112#endif
113
114#if __FreeBSD_version < 502113
115#define ttyld_modem(foo, bar) ((*linesw[(foo)->t_line].l_modem)((foo), (bar)))
116#define ttyld_rint(foo, bar) ((*linesw[(foo)->t_line].l_rint)((bar), (foo)))
117#define ttyld_start(foo) ((*linesw[(foo)->t_line].l_start)((foo)))
118#define ttyld_open(foo, bar) ((*linesw[(foo)->t_line].l_open) ((bar), (foo)))
119#define ttyld_close(foo, bar) ((*linesw[(foo)->t_line].l_close) ((foo), (bar)))
120#define ttyld_read(foo, bar, barf) ((*linesw[(foo)->t_line].l_read) ((foo), (bar), (barf)))
121#define ttyld_write(foo, bar, barf) ((*linesw[(foo)->t_line].l_write) ((foo), (bar), (barf)))
122#endif
123
124/* If we don't have Cronyx's sppp version, we don't have fr support via sppp */
125#ifndef PP_FR
126#define PP_FR 0
127#endif
128
129#define CX_DEBUG(d,s) ({if (d->chan->debug) {\
130 printf ("%s: ", d->name); printf s;}})
131#define CX_DEBUG2(d,s) ({if (d->chan->debug>1) {\
132 printf ("%s: ", d->name); printf s;}})
133
134#define UNIT(d) (minor(d) & 0x3f)
135#define IF_CUNIT(d) (minor(d) & 0x40)
136#define UNIT_CTL 0x3f
137#define CALLOUT(d) (minor(d) & 0x80)
138#define CDEV_MAJOR 42
139
140typedef struct _async_q {
141 int beg;
142 int end;
143 #define BF_SZ 14400
144 int buf[BF_SZ+1];
145} async_q;
146
147#define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ)
148#define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\
149 (q)->end = ((q)->end + 1)%BF_SZ;}
150#define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\
151 (q)->beg = ((q)->beg + 1)%BF_SZ;}
152
153#if __FreeBSD_version >= 400000
154static void cx_identify __P((driver_t *, device_t));
155static int cx_probe __P((device_t));
156static int cx_attach __P((device_t));
157static int cx_detach __P((device_t));
158
159static device_method_t cx_isa_methods [] = {
160 DEVMETHOD(device_identify, cx_identify),
161 DEVMETHOD(device_probe, cx_probe),
162 DEVMETHOD(device_attach, cx_attach),
163 DEVMETHOD(device_detach, cx_detach),
164 {0, 0}
165};
166
167typedef struct _bdrv_t {
168 cx_board_t *board;
169 struct resource *base_res;
170 struct resource *drq_res;
171 struct resource *irq_res;
172 int base_rid;
173 int drq_rid;
174 int irq_rid;
175 void *intrhand;
176} bdrv_t;
177
178static driver_t cx_isa_driver = {
179 "cx",
180 cx_isa_methods,
181 sizeof (bdrv_t),
182};
183
184static devclass_t cx_devclass;
185#endif
186
187typedef struct _drv_t {
188 char name [8];
189 cx_chan_t *chan;
190 cx_board_t *board;
191 cx_buf_t buf;
192 struct tty *tty;
193 struct callout_handle dcd_timeout_handle;
194 unsigned dtrwait;
195 unsigned dtroff;
196 unsigned callout;
197 unsigned lock;
198 int open_dev;
199 int cd;
200 int running;
201 struct callout_handle dtr_timeout_handle;
202#ifdef NETGRAPH
203 char nodename [NG_NODELEN+1];
204 hook_p hook;
205 hook_p debug_hook;
206 node_p node;
207 struct ifqueue lo_queue;
208 struct ifqueue hi_queue;
209 short timeout;
210 struct callout_handle timeout_handle;
211#else
212 struct sppp pp;
213#endif
214#if __FreeBSD_version >= 400000
215 struct cdev *devt[3];
216#endif
217 async_q aqueue;
218 #define CX_READ 1
219 #define CX_WRITE 2
220 int intr_action;
221 short atimeout;
222} drv_t;
223
224extern long csigma_fw_len;
225extern const char *csigma_fw_version;
226extern const char *csigma_fw_date;
227extern const char *csigma_fw_copyright;
228extern const cr_dat_tst_t csigma_fw_tvec[];
229extern const u_char csigma_fw_data[];
230static void cx_oproc (struct tty *tp);
231static int cx_param (struct tty *tp, struct termios *t);
232static void cx_stop (struct tty *tp, int flag);
233static void cx_dtrwakeup (void *a);
234static void cx_receive (cx_chan_t *c, char *data, int len);
235static void cx_transmit (cx_chan_t *c, void *attachment, int len);
236static void cx_error (cx_chan_t *c, int data);
237static void cx_modem (cx_chan_t *c);
238static void cx_up (drv_t *d);
239static void cx_start (drv_t *d);
240#if __FreeBSD_version < 502113
241static void ttyldoptim(struct tty *tp);
242#endif
243#if __FreeBSD_version < 500000
244static swihand_t cx_softintr;
245#else
246static void cx_softintr (void *);
247static void *cx_fast_ih;
248#endif
249static void cx_down (drv_t *d);
250static void cx_watchdog (drv_t *d);
251static void cx_carrier (void *arg);
252
253#ifdef NETGRAPH
254extern struct ng_type typestruct;
255#else
256static void cx_ifstart (struct ifnet *ifp);
257static void cx_tlf (struct sppp *sp);
258static void cx_tls (struct sppp *sp);
259static void cx_ifwatchdog (struct ifnet *ifp);
260static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data);
261static void cx_initialize (void *softc);
262#endif
263
264static cx_board_t *adapter [NCX];
265static drv_t *channel [NCX*NCHAN];
266static struct callout_handle led_timo [NCX];
267static struct callout_handle timeout_handle;
268#if __FreeBSD_version >= 400000
269 extern struct cdevsw cx_cdevsw;
270#endif
271
272static int MY_SOFT_INTR;
273
274/*
275 * Print the mbuf chain, for debug purposes only.
276 */
277static void printmbuf (struct mbuf *m)
278{
279 printf ("mbuf:");
280 for (; m; m=m->m_next) {
281 if (m->m_flags & M_PKTHDR)
282 printf (" HDR %d:", m->m_pkthdr.len);
283 if (m->m_flags & M_EXT)
284 printf (" EXT:");
285 printf (" %d", m->m_len);
286 }
287 printf ("\n");
288}
289
290/*
291 * Make an mbuf from data.
292 */
293static struct mbuf *makembuf (void *buf, u_int len)
294{
295 struct mbuf *m, *o, *p;
296
297 MGETHDR (m, M_DONTWAIT, MT_DATA);
298
299 if (! m)
300 return 0;
301
302 if (len >= MINCLSIZE)
303 MCLGET (m, M_DONTWAIT);
304
305 m->m_pkthdr.len = len;
306 m->m_len = 0;
307
308 p = m;
309 while (len) {
310 u_int n = M_TRAILINGSPACE (p);
311 if (n > len)
312 n = len;
313 if (! n) {
314 /* Allocate new mbuf. */
315 o = p;
316 MGET (p, M_DONTWAIT, MT_DATA);
317 if (! p) {
318 m_freem (m);
319 return 0;
320 }
321 if (len >= MINCLSIZE)
322 MCLGET (p, M_DONTWAIT);
323 p->m_len = 0;
324 o->m_next = p;
325
326 n = M_TRAILINGSPACE (p);
327 if (n > len)
328 n = len;
329 }
330 bcopy (buf, mtod (p, caddr_t) + p->m_len, n);
331
332 p->m_len += n;
333 buf = n + (char*) buf;
334 len -= n;
335 }
336 return m;
337}
338
339/*
340 * Recover after lost transmit interrupts.
341 */
342static void cx_timeout (void *arg)
343{
344 drv_t *d;
345 int s, i;
346
347 for (i=0; i<NCX*NCHAN; ++i) {
348 d = channel[i];
349 if (! d)
350 continue;
351 s = splhigh ();
352 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) {
353 d->tty->t_state &= ~TS_BUSY;
354 if (d->tty->t_dev) {
355 d->intr_action |= CX_WRITE;
356 MY_SOFT_INTR = 1;
357#if __FreeBSD_version >= 500000
358 swi_sched (cx_fast_ih, 0);
359#else
360 setsofttty ();
361#endif
362 }
363 CX_DEBUG (d, ("cx_timeout\n"));
364 }
365 if (d->atimeout)
366 d->atimeout--;
367 splx (s);
368 }
369 timeout_handle = timeout (cx_timeout, 0, hz*5);
370}
371
372static void cx_led_off (void *arg)
373{
374 cx_board_t *b = arg;
375 int s = splhigh ();
376
377 cx_led (b, 0);
378 led_timo[b->num].callout = 0;
379 splx (s);
380}
381
382/*
383 * Activate interupt handler from DDK.
384 */
385#if __FreeBSD_version >= 400000
386static void cx_intr (void *arg)
387{
388 bdrv_t *bd = arg;
389 cx_board_t *b = bd->board;
390#else
391static void cx_intr (int bnum)
392{
393 cx_board_t *b = adapter [bnum];
394#endif
395 int s = splhigh ();
396
397 /* Turn LED on. */
398 cx_led (b, 1);
399
400 cx_int_handler (b);
401
402 /* Turn LED off 50 msec later. */
403 if (! led_timo[b->num].callout)
404 led_timo[b->num] = timeout (cx_led_off, b, hz/20);
405 splx (s);
406}
407
408static int probe_irq (cx_board_t *b, int irq)
409{
410 int mask, busy, cnt;
411
412 /* Clear pending irq, if any. */
413 cx_probe_irq (b, -irq);
414 DELAY (100);
415 for (cnt=0; cnt<5; ++cnt) {
416 /* Get the mask of pending irqs, assuming they are busy.
417 * Activate the adapter on given irq. */
418 busy = cx_probe_irq (b, irq);
419 DELAY (100);
420
421 /* Get the mask of active irqs.
422 * Deactivate our irq. */
423 mask = cx_probe_irq (b, -irq);
424 DELAY (100);
425 if ((mask & ~busy) == 1 << irq) {
426 cx_probe_irq (b, 0);
427 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n",
428 b->num, irq, mask, busy); */
429 return 1;
430 }
431 }
432 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n",
433 b->num, irq, mask, busy); */
434 cx_probe_irq (b, 0);
435 return 0;
436}
437
438static short porttab [] = {
439 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
440 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
441};
442static char dmatab [] = { 7, 6, 5, 0 };
443static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 };
444
445#if __FreeBSD_version >= 400000
446static int cx_is_free_res (device_t dev, int rid, int type, u_long start,
447 u_long end, u_long count)
448{
449 struct resource *res;
450
451 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count,
452 RF_ALLOCATED)))
453 return 0;
454
455 bus_release_resource (dev, type, rid, res);
456
457 return 1;
458}
459
460static void cx_identify (driver_t *driver, device_t dev)
461{
462 u_long iobase, rescount;
463 int devcount;
464 device_t *devices;
465 device_t child;
466 devclass_t my_devclass;
467 int i, k;
468
469 if ((my_devclass = devclass_find ("cx")) == NULL)
470 return;
471
472 devclass_get_devices (my_devclass, &devices, &devcount);
473
474 if (devcount == 0) {
475 /* We should find all devices by our self. We could alter other
476 * devices, but we don't have a choise
477 */
478 for (i = 0; (iobase = porttab [i]) != 0; i++) {
479 if (!cx_is_free_res (dev, 1, SYS_RES_IOPORT,
480 iobase, iobase + NPORT, NPORT))
481 continue;
482 if (cx_probe_board (iobase, -1, -1) == 0)
483 continue;
484
485 devcount++;
486
487 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx",
488 -1);
489
490 if (child == NULL)
491 return;
492
493 device_set_desc_copy (child, "Cronyx Sigma");
494 device_set_driver (child, driver);
495 bus_set_resource (child, SYS_RES_IOPORT, 0,
496 iobase, NPORT);
497
498 if (devcount >= NCX)
499 break;
500 }
501 } else {
502 static short porttab [] = {
503 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
504 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
505 };
506 /* Lets check user choise.
507 */
508 for (k = 0; k < devcount; k++) {
509 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
510 &iobase, &rescount) != 0)
511 continue;
512
513 for (i = 0; porttab [i] != 0; i++) {
514 if (porttab [i] != iobase)
515 continue;
516 if (!cx_is_free_res (devices[k], 1, SYS_RES_IOPORT,
517 iobase, iobase + NPORT, NPORT))
518 continue;
519 if (cx_probe_board (iobase, -1, -1) == 0)
520 continue;
521 porttab [i] = -1;
522 device_set_desc_copy (devices[k], "Cronyx Sigma");
523 break;
524 }
525
526 if (porttab [i] == 0) {
527 device_delete_child (
528 device_get_parent (devices[k]),
529 devices [k]);
530 devices[k] = 0;
531 continue;
532 }
533 }
534 for (k = 0; k < devcount; k++) {
535 if (devices[k] == 0)
536 continue;
537 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
538 &iobase, &rescount) == 0)
539 continue;
540 for (i = 0; (iobase = porttab [i]) != 0; i++) {
541 if (porttab [i] == -1) {
542 continue;
543 }
544 if (!cx_is_free_res (devices[k], 1, SYS_RES_IOPORT,
545 iobase, iobase + NPORT, NPORT))
546 continue;
547 if (cx_probe_board (iobase, -1, -1) == 0)
548 continue;
549
550 bus_set_resource (devices[k], SYS_RES_IOPORT, 0,
551 iobase, NPORT);
552 porttab [i] = -1;
553 device_set_desc_copy (devices[k], "Cronyx Sigma");
554 break;
555 }
556 if (porttab [i] == 0) {
557 device_delete_child (
558 device_get_parent (devices[k]),
559 devices [k]);
560 }
561 }
562 free (devices, M_TEMP);
563 }
564
565 return;
566}
567
568static int cx_probe (device_t dev)
569{
570 int unit = device_get_unit (dev);
571 int i;
572 u_long iobase, rescount;
573
574 if (!device_get_desc (dev) ||
575 strcmp (device_get_desc (dev), "Cronyx Sigma"))
576 return ENXIO;
577
578 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) {
579 printf ("cx%d: Couldn't get IOPORT\n", unit);
580 return ENXIO;
581 }
582
583 if (!cx_is_free_res (dev, 1, SYS_RES_IOPORT,
584 iobase, iobase + NPORT, NPORT)) {
585 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase);
586 return ENXIO;
587 }
588
589 for (i = 0; porttab [i] != 0; i++) {
590 if (porttab [i] == iobase) {
591 porttab [i] = -1;
592 break;
593 }
594 }
595
596 if (porttab [i] == 0) {
597 return ENXIO;
598 }
599
600 if (!cx_probe_board (iobase, -1, -1)) {
601 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase);
602 return ENXIO;
603 }
604
605 return 0;
606}
607#else /* __FreeBSD_version < 400000 */
608static int cx_probe (struct isa_device *id)
609{
610 cx_board_t *b;
611 int i;
612
613#ifndef NETGRAPH
614 if (! sppp_attach) {
615 printf ("cx%d: no synchronous PPP driver configured\n",
616 id->id_unit);
617 return 0;
618 }
619#endif
620 if (id->id_iobase < 0) {
621 /* Autodetect the adapter. */
622 for (i=0; ; i++) {
623 if (! porttab[i]) {
624 id->id_iobase = -1;
625 return 0;
626 }
627 id->id_iobase = porttab[i];
628 if (id->id_unit > 0 && adapter[0] && adapter[0]->port == id->id_iobase)
629 continue;
630 if (id->id_unit > 1 && adapter[1] && adapter[1]->port == id->id_iobase)
631 continue;
632 if (! haveseen_isadev (id, CC_IOADDR | CC_QUIET) &&
633 cx_probe_board (id->id_iobase, -1, -1))
634 break;
635 }
636 } else if (! cx_probe_board (id->id_iobase, -1, -1))
637 return 0;
638
639 if (id->id_drq < 0) {
640 /* Find available 16-bit DRQ. */
641
642 for (i=0; ; ++i) {
643 if (! dmatab[i]) {
644 printf ("cx%d: no available drq found\n",
645 id->id_unit);
646 id->id_drq = -1;
647 return 0;
648 }
649 id->id_drq = dmatab[i];
650 if (! haveseen_isadev (id, CC_DRQ | CC_QUIET)
651 && !isa_dma_acquire (id->id_drq))
652 break;
653 }
654 }
655
656 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK);
657 if (!b) {
658 printf ("cx:%d: Couldn't allocate memory\n", id->id_unit);
659 return (ENXIO);
660 }
661 adapter[id->id_unit] = b;
662 bzero (b, sizeof(cx_board_t));
663
664 if (! cx_open_board (b, id->id_unit, id->id_iobase,
665 id->id_irq ? ffs (id->id_irq) - 1 : -1, id->id_drq)) {
666 printf ("cx%d: cannot initialize adapter\n", id->id_unit);
667 isa_dma_release (id->id_drq);
668 adapter[id->id_unit] = 0;
669 free (b, M_DEVBUF);
670 return 0;
671 }
672
673 if (id->id_irq) {
674 if (! probe_irq (b, ffs (id->id_irq) - 1))
675 printf ("cx%d: irq %d not functional\n",
676 id->id_unit, ffs (id->id_irq) - 1);
677 } else {
678 /* Find available IRQ. */
679
680 for (i=0; ; ++i) {
681 if (! irqtab[i]) {
682 printf ("cx%d: no available irq found\n",
683 id->id_unit);
684 id->id_irq = -1;
685 isa_dma_release (id->id_drq);
686 adapter[id->id_unit] = 0;
687 free (b, M_DEVBUF);
688 return 0;
689 }
690 id->id_irq = 1 << irqtab[i];
691 if (haveseen_isadev (id, CC_IRQ | CC_QUIET))
692 continue;
693#ifdef KLD_MODULE
694 if (register_intr (irqtab[i], 0, 0, (inthand2_t*)
695 cx_intr, &net_imask, id->id_unit) != 0)
696 continue;
697 unregister_intr (irqtab[i], (inthand2_t*) cx_intr);
698#endif
699 if (probe_irq (b, irqtab[i]))
700 break;
701 }
702 }
703 cx_init (b, b->num, b->port, ffs (id->id_irq) - 1, b->dma);
704 cx_setup_board (b, 0, 0, 0);
705
706 return 1;
707}
708#endif /* __FreeBSD_version < 400000 */
709
710/*
711 * The adapter is present, initialize the driver structures.
712 */
713#if __FreeBSD_version < 400000
714static int cx_attach (struct isa_device *id)
715{
716#else
717static int cx_attach (device_t dev)
718{
719 bdrv_t *bd = device_get_softc (dev);
720 u_long iobase, drq, irq, rescount;
721 int unit = device_get_unit (dev);
722 int i;
723 int s;
724#endif
725 cx_board_t *b;
726 cx_chan_t *c;
727 drv_t *d;
728
729#if __FreeBSD_version >= 400000
730 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit));
731
732 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount);
733 bd->base_rid = 0;
734 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid,
735 iobase, iobase + NPORT, NPORT, RF_ACTIVE);
736 if (! bd->base_res) {
737 printf ("cx%d: cannot allocate base address\n", unit);
738 return ENXIO;
739 }
740
741 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) {
742 for (i = 0; (drq = dmatab [i]) != 0; i++) {
743 if (!cx_is_free_res (dev, 1, SYS_RES_DRQ,
744 drq, drq + 1, 1))
745 continue;
746 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1);
747 break;
748 }
749
750 if (dmatab[i] == 0) {
751 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
752 bd->base_res);
753 printf ("cx%d: Couldn't get DRQ\n", unit);
754 return ENXIO;
755 }
756 }
757
758 bd->drq_rid = 0;
759 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid,
760 drq, drq + 1, 1, RF_ACTIVE);
761 if (! bd->drq_res) {
762 printf ("cx%d: cannot allocate drq\n", unit);
763 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
764 bd->base_res);
765 return ENXIO;
766 }
767
768 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) {
769 for (i = 0; (irq = irqtab [i]) != 0; i++) {
770 if (!cx_is_free_res (dev, 1, SYS_RES_IRQ,
771 irq, irq + 1, 1))
772 continue;
773 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1);
774 break;
775 }
776
777 if (irqtab[i] == 0) {
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 printf ("cx%d: Couldn't get IRQ\n", unit);
783 return ENXIO;
784 }
785 }
786
787 bd->irq_rid = 0;
788 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid,
789 irq, irq + 1, 1, RF_ACTIVE);
790 if (! bd->irq_res) {
791 printf ("cx%d: Couldn't allocate irq\n", unit);
792 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
793 bd->drq_res);
794 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
795 bd->base_res);
796 return ENXIO;
797 }
798
799 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK);
800 if (!b) {
801 printf ("cx:%d: Couldn't allocate memory\n", unit);
802 return (ENXIO);
803 }
804 adapter[unit] = b;
805 bzero (b, sizeof(cx_board_t));
806
807 if (! cx_open_board (b, unit, iobase, irq, drq)) {
808 printf ("cx%d: error loading firmware\n", unit);
809 free (b, M_DEVBUF);
810 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
811 bd->irq_res);
812 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
813 bd->drq_res);
814 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
815 bd->base_res);
816 return ENXIO;
817 }
818
819 bd->board = b;
820
821 if (! probe_irq (b, irq)) {
822 printf ("cx%d: irq %ld not functional\n", unit, irq);
823 bd->board = 0;
824 adapter [unit] = 0;
825 free (b, M_DEVBUF);
826 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
827 bd->irq_res);
828 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
829 bd->drq_res);
830 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
831 bd->base_res);
832 return ENXIO;
833 }
834
835 s = splhigh ();
836 if (bus_setup_intr (dev, bd->irq_res, INTR_TYPE_NET, cx_intr, bd,
837 &bd->intrhand)) {
838 printf ("cx%d: Can't setup irq %ld\n", unit, irq);
839 bd->board = 0;
840 adapter [unit] = 0;
841 free (b, M_DEVBUF);
842 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
843 bd->irq_res);
844 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
845 bd->drq_res);
846 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
847 bd->base_res);
848 splx (s);
849 return ENXIO;
850 }
851
852 cx_init (b, b->num, b->port, irq, drq);
853 cx_setup_board (b, 0, 0, 0);
854#else /* __FreeBSD_version >= 400000 */
855 b = adapter[id->id_unit];
856#endif /* __FreeBSD_version >= 400000 */
857
858 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name);
859#if __FreeBSD_version < 400000
860 id->id_ointr = cx_intr;
861#endif
862
863 for (c=b->chan; c<b->chan+NCHAN; ++c) {
864#if __FreeBSD_version >= 400000
865 char *dnmt="tty %x";
866 char *dnmc="cua %x";
867#endif
868 if (c->type == T_NONE)
869 continue;
870 d = contigmalloc (sizeof(drv_t), M_DEVBUF, M_WAITOK,
871 0x100000, 0x1000000, 16, 0);
872 channel [b->num*NCHAN + c->num] = d;
873 bzero (d, sizeof(drv_t));
874 sprintf (d->name, "cx%d.%d", b->num, c->num);
875 d->board = b;
876 d->chan = c;
877 d->dtrwait = 3 * hz; /* Default DTR off timeout is 3 seconds. */
878 d->open_dev = 0;
879 c->sys = d;
880
881 switch (c->type) {
882 case T_SYNC_RS232:
883 case T_SYNC_V35:
884 case T_SYNC_RS449:
885 case T_UNIV:
886 case T_UNIV_RS232:
887 case T_UNIV_RS449:
888 case T_UNIV_V35:
889#ifdef NETGRAPH
890 if (ng_make_node_common (&typestruct, &d->node) != 0) {
891 printf ("%s: cannot make common node\n", d->name);
892 channel [b->num*NCHAN + c->num] = 0;
893 c->sys = 0;
894#if __FreeBSD_version < 400000
895 free (d, M_DEVBUF);
896#else
897 contigfree (d, sizeof (*d), M_DEVBUF);
898#endif
899 continue;
900 }
901#if __FreeBSD_version >= 500000
902 NG_NODE_SET_PRIVATE (d->node, d);
903#else
904 d->node->private = d;
905#endif
906 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE,
907 c->board->num*NCHAN + c->num);
908 if (ng_name_node (d->node, d->nodename)) {
909 printf ("%s: cannot name node\n", d->nodename);
910#if __FreeBSD_version >= 500000
911 NG_NODE_UNREF (d->node);
912#else
913 ng_rmnode (d->node);
914 ng_unref (d->node);
915#endif
916 channel [b->num*NCHAN + c->num] = 0;
917 c->sys = 0;
918#if __FreeBSD_version < 400000
919 free (d, M_DEVBUF);
920#else
921 contigfree (d, sizeof (*d), M_DEVBUF);
922#endif
923 continue;
924 }
925 d->lo_queue.ifq_maxlen = IFQ_MAXLEN;
926 d->hi_queue.ifq_maxlen = IFQ_MAXLEN;
927#if __FreeBSD_version >= 500000
928 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF);
929 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF);
930#endif
931#else /*NETGRAPH*/
932 d->pp.pp_if.if_softc = d;
933#if __FreeBSD_version > 501000
934 if_initname (&d->pp.pp_if, "cx", b->num * NCHAN + c->num);
935#else
936 d->pp.pp_if.if_unit = b->num * NCHAN + c->num;
937 d->pp.pp_if.if_name = "cx";
938#endif
939 d->pp.pp_if.if_mtu = PP_MTU;
940 d->pp.pp_if.if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
941 d->pp.pp_if.if_ioctl = cx_sioctl;
942 d->pp.pp_if.if_start = cx_ifstart;
943 d->pp.pp_if.if_watchdog = cx_ifwatchdog;
944 d->pp.pp_if.if_init = cx_initialize;
945 sppp_attach (&d->pp.pp_if);
946 if_attach (&d->pp.pp_if);
947 d->pp.pp_tlf = cx_tlf;
948 d->pp.pp_tls = cx_tls;
949#if __FreeBSD_version >= 400000 || NBPFILTER > 0
950 /* If BPF is in the kernel, call the attach for it.
951 * Size of PPP header is 4 bytes. */
952 bpfattach (&d->pp.pp_if, DLT_PPP, 4);
953#endif
954#endif /*NETGRAPH*/
955 }
956 cx_start_chan (c, &d->buf, vtophys (&d->buf));
957 cx_register_receive (c, &cx_receive);
958 cx_register_transmit (c, &cx_transmit);
959 cx_register_error (c, &cx_error);
960 cx_register_modem (c, &cx_modem);
961#if __FreeBSD_version >= 400000
962 dnmt[3] = 'x'+b->num;
963 dnmc[3] = 'x'+b->num;
964 d->devt[0] = make_dev (&cx_cdevsw, b->num*NCHAN + c->num, UID_ROOT, GID_WHEEL, 0644, dnmt, b->num*NCHAN + c->num);
965 d->devt[1] = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num);
966 d->devt[2] = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 128, UID_ROOT, GID_WHEEL, 0660, dnmc, b->num*NCHAN + c->num);
967 }
968 splx (s);
969
970 return 0;
971#else /* __FreeBSD_version < 400000 */
972 }
973
974 return 1;
975#endif
976}
977
978#if __FreeBSD_version >= 400000
979static int cx_detach (device_t dev)
980{
981 bdrv_t *bd = device_get_softc (dev);
982 cx_board_t *b = bd->board;
983 cx_chan_t *c;
984 int s = splhigh ();
985
986 /* Check if the device is busy (open). */
987 for (c = b->chan; c < b->chan + NCHAN; ++c) {
988 drv_t *d = (drv_t*) c->sys;
989
990 if (!d || d->chan->type == T_NONE)
991 continue;
992 if (d->lock) {
993 splx (s);
994 return EBUSY;
995 }
996 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
997 (d->open_dev|0x2)) {
998 splx (s);
999 return EBUSY;
1000 }
1001 if (d->running) {
1002 splx (s);
1003 return EBUSY;
1004 }
1005 }
1006
1007 /* Deactivate the timeout routine. And soft interrupt*/
1008 if (led_timo[b->num].callout)
1009 untimeout (cx_led_off, b, led_timo[b->num]);
1010
1011 for (c = b->chan; c < b->chan + NCHAN; ++c) {
1012 drv_t *d = c->sys;
1013
1014 if (!d || d->chan->type == T_NONE)
1015 continue;
1016
1017 if (d->dtr_timeout_handle.callout)
1018 untimeout (cx_dtrwakeup, d, d->dtr_timeout_handle);
1019 if (d->dcd_timeout_handle.callout)
1020 untimeout (cx_carrier, c, d->dcd_timeout_handle);
1021 }
1022 bus_teardown_intr (dev, bd->irq_res, bd->intrhand);
1023 bus_deactivate_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res);
1024 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res);
1025
1026 bus_deactivate_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res);
1027 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res);
1028
1029 bus_deactivate_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->irq_res);
1030 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res);
1031
1032 cx_close_board (b);
1033
1034 /* Detach the interfaces, free buffer memory. */
1035 for (c = b->chan; c < b->chan + NCHAN; ++c) {
1036 drv_t *d = (drv_t*) c->sys;
1037
1038 if (!d || d->chan->type == T_NONE)
1039 continue;
1040
1041#if __FreeBSD_version >= 502113
1042 if (d->tty) {
1043 ttyrel (d->tty);
1044 d->tty = NULL;
1045 }
1046#endif
1047
1048#ifdef NETGRAPH
1049#if __FreeBSD_version >= 500000
1050 if (d->node) {
1051 ng_rmnode_self (d->node);
1052 NG_NODE_UNREF (d->node);
1053 d->node = NULL;
1054 }
1055 mtx_destroy (&d->lo_queue.ifq_mtx);
1056 mtx_destroy (&d->hi_queue.ifq_mtx);
1057#else
1058 ng_rmnode (d->node);
1059 d->node = NULL;
1060#endif
1061#else
1062#if __FreeBSD_version >= 410000 && NBPFILTER > 0
1063 /* Detach from the packet filter list of interfaces. */
1064 bpfdetach (&d->pp.pp_if);
1065#endif
1066 /* Detach from the sync PPP list. */
1067 sppp_detach (&d->pp.pp_if);
1068
1069 if_detach (&d->pp.pp_if);
1070#endif
1071 destroy_dev (d->devt[0]);
1072 destroy_dev (d->devt[1]);
1073 destroy_dev (d->devt[2]);
1074 }
1075
1076 cx_led_off (b);
1077 if (led_timo[b->num].callout)
1078 untimeout (cx_led_off, b, led_timo[b->num]);
1079 splx (s);
1080
1081 s = splhigh ();
1082 for (c = b->chan; c < b->chan + NCHAN; ++c) {
1083 drv_t *d = (drv_t*) c->sys;
1084
1085 if (!d || d->chan->type == T_NONE)
1086 continue;
1087
1088 /* Deallocate buffers. */
1089 contigfree (d, sizeof (*d), M_DEVBUF);
1090 }
1091 bd->board = 0;
1092 adapter [b->num] = 0;
1093 free (b, M_DEVBUF);
1094 splx (s);
1095
1096 return 0;
1097}
1098#endif
1099
1100#ifndef NETGRAPH
1101static void cx_ifstart (struct ifnet *ifp)
1102{
1103 drv_t *d = ifp->if_softc;
1104
1105 cx_start (d);
1106}
1107
1108static void cx_ifwatchdog (struct ifnet *ifp)
1109{
1110 drv_t *d = ifp->if_softc;
1111
1112 cx_watchdog (d);
1113}
1114
1115static void cx_tlf (struct sppp *sp)
1116{
1117 drv_t *d = sp->pp_if.if_softc;
1118
1119 CX_DEBUG (d, ("cx_tlf\n"));
1120/* cx_set_dtr (d->chan, 0);*/
1121/* cx_set_rts (d->chan, 0);*/
1122 sp->pp_down (sp);
1123}
1124
1125static void cx_tls (struct sppp *sp)
1126{
1127 drv_t *d = sp->pp_if.if_softc;
1128
1129 CX_DEBUG (d, ("cx_tls\n"));
1130 sp->pp_up (sp);
1131}
1132
1133/*
1134 * Initialization of interface.
1135 * It seems to be never called by upper level.
1136 */
1137static void cx_initialize (void *softc)
1138{
1139 drv_t *d = softc;
1140
1141 CX_DEBUG (d, ("cx_initialize\n"));
1142}
1143
1144/*
1145 * Process an ioctl request.
1146 */
1147static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data)
1148{
1149 drv_t *d = ifp->if_softc;
1150 int error, s, was_up, should_be_up;
1151
1152 /* No socket ioctls while the channel is in async mode. */
1153 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC)
1154 return EBUSY;
1155
1156 /* Socket ioctls on slave subchannels are not allowed. */
1157 was_up = (ifp->if_flags & IFF_RUNNING) != 0;
1158 error = sppp_ioctl (ifp, cmd, data);
1159 if (error)
1160 return error;
1161
1162 if (! (ifp->if_flags & IFF_DEBUG))
1163 d->chan->debug = 0;
1164 else if (! d->chan->debug)
1165 d->chan->debug = 1;
1166
1167 switch (cmd) {
1168 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0;
1169 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0;
1170 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0;
1171 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break;
1172 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break;
1173 }
1174
1175 /* We get here only in case of SIFFLAGS or SIFADDR. */
1176 s = splhigh ();
1177 should_be_up = (ifp->if_flags & IFF_RUNNING) != 0;
1178 if (!was_up && should_be_up) {
1179 /* Interface goes up -- start it. */
1180 cx_up (d);
1181 cx_start (d);
1182 } else if (was_up && !should_be_up) {
1183 /* Interface is going down -- stop it. */
1184 /* if ((d->pp.pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/
1185 cx_down (d);
1186 }
1187 splx (s);
1188 return 0;
1189}
1190#endif /*NETGRAPH*/
1191
1192/*
1193 * Stop the interface. Called on splimp().
1194 */
1195static void cx_down (drv_t *d)
1196{
1197 int s = splhigh ();
1198 CX_DEBUG (d, ("cx_down\n"));
1199 cx_set_dtr (d->chan, 0);
1200 cx_set_rts (d->chan, 0);
1201 d->running = 0;
1202 splx (s);
1203}
1204
1205/*
1206 * Start the interface. Called on splimp().
1207 */
1208static void cx_up (drv_t *d)
1209{
1210 int s = splhigh ();
1211 CX_DEBUG (d, ("cx_up\n"));
1212 cx_set_dtr (d->chan, 1);
1213 cx_set_rts (d->chan, 1);
1214 d->running = 1;
1215 splx (s);
1216}
1217
1218/*
1219 * Start output on the (slave) interface. Get another datagram to send
1220 * off of the interface queue, and copy it to the interface
1221 * before starting the output.
1222 */
1223static void cx_send (drv_t *d)
1224{
1225 struct mbuf *m;
1226 u_short len;
1227
1228 CX_DEBUG2 (d, ("cx_send\n"));
1229
1230 /* No output if the interface is down. */
1231 if (! d->running)
1232 return;
1233
1234 /* No output if the modem is off. */
1235 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan))
1236 return;
1237
1238 if (cx_buf_free (d->chan)) {
1239 /* Get the packet to send. */
1240#ifdef NETGRAPH
1241 IF_DEQUEUE (&d->hi_queue, m);
1242 if (! m)
1243 IF_DEQUEUE (&d->lo_queue, m);
1244#else
1245 m = sppp_dequeue (&d->pp.pp_if);
1246#endif
1247 if (! m)
1248 return;
1249#if (__FreeBSD_version >= 400000 || NBPFILTER > 0) && !defined (NETGRAPH)
1250 if (d->pp.pp_if.if_bpf)
1251#if __FreeBSD_version >= 500000
1252 BPF_MTAP (&d->pp.pp_if, m);
1253#else
1254 bpf_mtap (&d->pp.pp_if, m);
1255#endif
1256#endif
1257 len = m->m_pkthdr.len;
1258 if (! m->m_next)
1259 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t),
1260 len, 0);
1261 else {
1262 u_char buf [DMABUFSZ];
1263 m_copydata (m, 0, len, buf);
1264 cx_send_packet (d->chan, buf, len, 0);
1265 }
1266 m_freem (m);
1267
1268 /* Set up transmit timeout, 10 seconds. */
1269#ifdef NETGRAPH
1270 d->timeout = 10;
1271#else
1272 d->pp.pp_if.if_timer = 10;
1273#endif
1274 }
1275#ifndef NETGRAPH
1276 d->pp.pp_if.if_flags |= IFF_OACTIVE;
1277#endif
1278}
1279
1280/*
1281 * Start output on the interface.
1282 * Always called on splimp().
1283 */
1284static void cx_start (drv_t *d)
1285{
1286 int s = splhigh ();
1287 if (d->running) {
1288 if (! d->chan->dtr)
1289 cx_set_dtr (d->chan, 1);
1290 if (! d->chan->rts)
1291 cx_set_rts (d->chan, 1);
1292 cx_send (d);
1293 }
1294 splx (s);
1295}
1296
1297/*
1298 * Handle transmit timeouts.
1299 * Recover after lost transmit interrupts.
1300 * Always called on splimp().
1301 */
1302static void cx_watchdog (drv_t *d)
1303{
1304 int s = splhigh ();
1305 CX_DEBUG (d, ("device timeout\n"));
1306 if (d->running) {
1307 cx_setup_chan (d->chan);
1308 cx_start_chan (d->chan, 0, 0);
1309 cx_set_dtr (d->chan, 1);
1310 cx_set_rts (d->chan, 1);
1311 cx_start (d);
1312 }
1313 splx (s);
1314}
1315
1316/*
1317 * Transmit callback function.
1318 */
1319static void cx_transmit (cx_chan_t *c, void *attachment, int len)
1320{
1321 drv_t *d = c->sys;
1322
1323 if (!d)
1324 return;
1325
1326 if (c->mode == M_ASYNC && d->tty) {
1327 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH);
1328 d->atimeout = 0;
1329 if (d->tty->t_dev) {
1330 d->intr_action |= CX_WRITE;
1331 MY_SOFT_INTR = 1;
1332#if __FreeBSD_version >= 500000
1333 swi_sched (cx_fast_ih, 0);
1334#else
1335 setsofttty ();
1336#endif
1337 }
1338 return;
1339 }
1340#ifdef NETGRAPH
1341 d->timeout = 0;
1342#else
1343 ++d->pp.pp_if.if_opackets;
1344 d->pp.pp_if.if_flags &= ~IFF_OACTIVE;
1345 d->pp.pp_if.if_timer = 0;
1346#endif
1347 cx_start (d);
1348}
1349
1350/*
1351 * Process the received packet.
1352 */
1353static void cx_receive (cx_chan_t *c, char *data, int len)
1354{
1355 drv_t *d = c->sys;
1356 struct mbuf *m;
1357 char *cc = data;
1358#if __FreeBSD_version >= 500000 && defined NETGRAPH
1359 int error;
1360#endif
1361
1362 if (!d)
1363 return;
1364
1365 if (c->mode == M_ASYNC && d->tty) {
1366 if (d->tty->t_state & TS_ISOPEN) {
1367 async_q *q = &d->aqueue;
1368 int size = BF_SZ - 1 - AQ_GSZ (q);
1369
1370 if (len <= 0 && !size)
1371 return;
1372
1373 if (len > size) {
1374 c->ierrs++;
1375 cx_error (c, CX_OVERRUN);
1376 len = size - 1;
1377 }
1378
1379 while (len--) {
1380 AQ_PUSH (q, *(unsigned char *)cc);
1381 cc++;
1382 }
1383
1384 d->intr_action |= CX_READ;
1385 MY_SOFT_INTR = 1;
1386#if __FreeBSD_version >= 500000
1387 swi_sched (cx_fast_ih, 0);
1388#else
1389 setsofttty ();
1390#endif
1391 }
1392 return;
1393 }
1394 if (! d->running)
1395 return;
1396
1397 m = makembuf (data, len);
1398 if (! m) {
1399 CX_DEBUG (d, ("no memory for packet\n"));
1400#ifndef NETGRAPH
1401 ++d->pp.pp_if.if_iqdrops;
1402#endif
1403 return;
1404 }
1405 if (c->debug > 1)
1406 printmbuf (m);
1407#ifdef NETGRAPH
1408 m->m_pkthdr.rcvif = 0;
1409#if __FreeBSD_version >= 500000
1410 NG_SEND_DATA_ONLY (error, d->hook, m);
1411#else
1412 ng_queue_data (d->hook, m, 0);
1413#endif
1414#else
1415 ++d->pp.pp_if.if_ipackets;
1416 m->m_pkthdr.rcvif = &d->pp.pp_if;
1417#if __FreeBSD_version >= 400000 || NBPFILTER > 0
1418 /* Check if there's a BPF listener on this interface.
1419 * If so, hand off the raw packet to bpf. */
1420 if (d->pp.pp_if.if_bpf)
1421#if __FreeBSD_version >= 500000
1422 BPF_TAP (&d->pp.pp_if, data, len);
1423#else
1424 bpf_tap (&d->pp.pp_if, data, len);
1425#endif
1426#endif
1427 sppp_input (&d->pp.pp_if, m);
1428#endif
1429}
1430
1431#if __FreeBSD_version < 502113
1432#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\
1433 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\
1434 && (!(tp->t_iflag & PARMRK)\
1435 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\
1436 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\
1437 && linesw[tp->t_line].l_rint == ttyinput)
1438#else
1439#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\
1440 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\
1441 && (!(tp->t_iflag & PARMRK)\
1442 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\
1443 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\
1444 && linesw[tp->t_line]->l_rint == ttyinput)
1445#endif
1446
1447/*
1448 * Error callback function.
1449 */
1450static void cx_error (cx_chan_t *c, int data)
1451{
1452 drv_t *d = c->sys;
1453 async_q *q;
1454
1455 if (!d)
1456 return;
1457
1458 q = &(d->aqueue);
1459
1460 switch (data) {
1461 case CX_FRAME:
1462 CX_DEBUG (d, ("frame error\n"));
1463 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1464 && (AQ_GSZ (q) < BF_SZ - 1)
1465 && (!CONDITION((&d->tty->t_termios), (d->tty))
1466 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1467 AQ_PUSH (q, TTY_FE);
1468 d->intr_action |= CX_READ;
1469 MY_SOFT_INTR = 1;
1470#if __FreeBSD_version >= 500000
1471 swi_sched (cx_fast_ih, 0);
1472#else
1473 setsofttty ();
1474#endif
1475 }
1476#ifndef NETGRAPH
1477 else
1478 ++d->pp.pp_if.if_ierrors;
1479#endif
1480 break;
1481 case CX_CRC:
1482 CX_DEBUG (d, ("crc error\n"));
1483 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1484 && (AQ_GSZ (q) < BF_SZ - 1)
1485 && (!CONDITION((&d->tty->t_termios), (d->tty))
1486 || !(d->tty->t_iflag & INPCK)
1487 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1488 AQ_PUSH (q, TTY_PE);
1489 d->intr_action |= CX_READ;
1490 MY_SOFT_INTR = 1;
1491#if __FreeBSD_version >= 500000
1492 swi_sched (cx_fast_ih, 0);
1493#else
1494 setsofttty ();
1495#endif
1496 }
1497#ifndef NETGRAPH
1498 else
1499 ++d->pp.pp_if.if_ierrors;
1500#endif
1501 break;
1502 case CX_OVERRUN:
1503 CX_DEBUG (d, ("overrun error\n"));
1504#ifdef TTY_OE
1505 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1506 && (AQ_GSZ (q) < BF_SZ - 1)
1507 && (!CONDITION((&d->tty->t_termios), (d->tty)))) {
1508 AQ_PUSH (q, TTY_OE);
1509 d->intr_action |= CX_READ;
1510 MY_SOFT_INTR = 1;
1511#if __FreeBSD_version >= 500000
1512 swi_sched (cx_fast_ih, 0);
1513#else
1514 setsofttty ();
1515#endif
1516 }
1517#endif
1518#ifndef NETGRAPH
1519 else {
1520 ++d->pp.pp_if.if_collisions;
1521 ++d->pp.pp_if.if_ierrors;
1522 }
1523#endif
1524 break;
1525 case CX_OVERFLOW:
1526 CX_DEBUG (d, ("overflow error\n"));
1527#ifndef NETGRAPH
1528 if (c->mode != M_ASYNC)
1529 ++d->pp.pp_if.if_ierrors;
1530#endif
1531 break;
1532 case CX_UNDERRUN:
1533 CX_DEBUG (d, ("underrun error\n"));
1534 if (c->mode != M_ASYNC) {
1535#ifdef NETGRAPH
1536 d->timeout = 0;
1537#else
1538 ++d->pp.pp_if.if_oerrors;
1539 d->pp.pp_if.if_flags &= ~IFF_OACTIVE;
1540 d->pp.pp_if.if_timer = 0;
1541 cx_start (d);
1542#endif
1543 }
1544 break;
1545 case CX_BREAK:
1546 CX_DEBUG (d, ("break error\n"));
1547 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1548 && (AQ_GSZ (q) < BF_SZ - 1)
1549 && (!CONDITION((&d->tty->t_termios), (d->tty))
1550 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) {
1551 AQ_PUSH (q, TTY_BI);
1552 d->intr_action |= CX_READ;
1553 MY_SOFT_INTR = 1;
1554#if __FreeBSD_version >= 500000
1555 swi_sched (cx_fast_ih, 0);
1556#else
1557 setsofttty ();
1558#endif
1559 }
1560#ifndef NETGRAPH
1561 else
1562 ++d->pp.pp_if.if_ierrors;
1563#endif
1564 break;
1565 default:
1566 CX_DEBUG (d, ("error #%d\n", data));
1567 }
1568}
1569
1570#if __FreeBSD_version < 500000
1571static int cx_open (dev_t dev, int flag, int mode, struct proc *p)
1572#else
1573static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td)
1574#endif
1575{
1576 int unit = UNIT (dev);
1577 drv_t *d;
1578 int error;
1579
1580 if (unit >= NCX*NCHAN || ! (d = channel[unit]))
1581 return ENXIO;
1582 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n",
1583 unit, flag, mode));
1584
1585 if (d->chan->mode != M_ASYNC || IF_CUNIT(dev)) {
1586 d->open_dev |= 0x1;
1587 return 0;
1588 }
1589 if (!d->tty) {
1590 d->tty = ttymalloc (d->tty);
1591 d->tty->t_oproc = cx_oproc;
1592 d->tty->t_param = cx_param;
1593#if __FreeBSD_version >= 400000
1594 d->tty->t_stop = cx_stop;
1595#endif
1596 }
1597#if __FreeBSD_version >= 400000
1598 dev->si_tty = d->tty;
1599#endif
1600 d->tty->t_dev = dev;
1601again:
1602 if (d->dtroff) {
1603 error = tsleep (&d->dtrwait, TTIPRI | PCATCH, "cxdtr", 0);
1604 if (error)
1605 return error;
1606 goto again;
1607 }
1608
1609 if ((d->tty->t_state & TS_ISOPEN) && (d->tty->t_state & TS_XCLUDE) &&
1610#if __FreeBSD_version >= 500000
1611 suser (td))
1612#else
1613 p->p_ucred->cr_uid != 0)
1614#endif
1615 return EBUSY;
1616
1617 if (d->tty->t_state & TS_ISOPEN) {
1618 /*
1619 * Cannot open /dev/cua if /dev/tty already opened.
1620 */
1621 if (CALLOUT (dev) && ! d->callout)
1622 return EBUSY;
1623
1624 /*
1625 * Opening /dev/tty when /dev/cua is already opened.
1626 * Wait for close, then try again.
1627 */
1628 if (! CALLOUT (dev) && d->callout) {
1629 if (flag & O_NONBLOCK)
1630 return EBUSY;
1631 error = tsleep (d, TTIPRI | PCATCH, "cxbi", 0);
1632 if (error)
1633 return error;
1634 goto again;
1635 }
1636 } else if (d->lock && ! CALLOUT (dev) && (flag & O_NONBLOCK))
1637 /*
1638 * We try to open /dev/tty in non-blocking mode
1639 * while somebody is already waiting for carrier on it.
1640 */
1641 return EBUSY;
1642 else {
1643 ttychars (d->tty);
1644 if (d->tty->t_ispeed == 0) {
1645 d->tty->t_iflag = 0;
1646 d->tty->t_oflag = 0;
1647 d->tty->t_lflag = 0;
1648 d->tty->t_cflag = CREAD | CS8 | HUPCL;
1649 d->tty->t_ispeed = d->chan->rxbaud;
1650 d->tty->t_ospeed = d->chan->txbaud;
1651 }
1652 if (CALLOUT (dev))
1653 d->tty->t_cflag |= CLOCAL;
1654 else
1655 d->tty->t_cflag &= ~CLOCAL;
1656 cx_param (d->tty, &d->tty->t_termios);
1657 ttsetwater (d->tty);
1658 }
1659
1660 splhigh ();
1661 if (! (d->tty->t_state & TS_ISOPEN)) {
1662 cx_start_chan (d->chan, 0, 0);
1663 cx_set_dtr (d->chan, 1);
1664 cx_set_rts (d->chan, 1);
1665 d->cd = cx_get_cd (d->chan);
1666 if (CALLOUT (dev) || cx_get_cd (d->chan))
1667 ttyld_modem(d->tty, 1);
1668 }
1669
1670 if (! (flag & O_NONBLOCK) && ! (d->tty->t_cflag & CLOCAL) &&
1671 ! (d->tty->t_state & TS_CARR_ON)) {
1672 /* Lock the channel against cxconfig while we are
1673 * waiting for carrier. */
1674 d->lock++;
1675 error = tsleep (&d->tty->t_rawq, TTIPRI | PCATCH, "cxdcd", 0);
1676 /* Unlock the channel. */
1677 d->lock--;
1678 spl0 ();
1679 if (error)
1680 goto failed;
1681 goto again;
1682 }
1683
1684 error = ttyld_open (d->tty, dev);
1685 ttyldoptim (d->tty);
1686 spl0 ();
1687 if (error) {
1688failed: if (! (d->tty->t_state & TS_ISOPEN)) {
1689 splhigh ();
1690 cx_set_dtr (d->chan, 0);
1691 cx_set_rts (d->chan, 0);
1692 if (d->dtrwait) {
1693 d->dtr_timeout_handle =
1694 timeout (cx_dtrwakeup, d, d->dtrwait);
1695 d->dtroff = 1;
1696 }
1697 spl0 ();
1698 }
1699 return error;
1700 }
1701
1702 if (d->tty->t_state & TS_ISOPEN)
1703 d->callout = CALLOUT (dev) ? 1 : 0;
1704
1705 d->open_dev |= 0x2;
1706 CX_DEBUG2 (d, ("cx_open done\n"));
1707 return 0;
1708}
1709
1710#if __FreeBSD_version < 500000
1711static int cx_close (dev_t dev, int flag, int mode, struct proc *p)
1712#else
1713static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td)
1714#endif
1715{
1716 drv_t *d = channel [UNIT (dev)];
1717 int s;
1718
1719 CX_DEBUG2 (d, ("cx_close\n"));
1720 if ((!(d->open_dev&0x2)) || IF_CUNIT(dev)){
1721 d->open_dev &= ~0x1;
1722 return 0;
1723 }
1724 s = splhigh ();
1725 ttyld_close(d->tty, flag);
1726 ttyldoptim (d->tty);
1727
1728 /* Disable receiver.
1729 * Transmitter continues sending the queued data. */
1730 cx_enable_receive (d->chan, 0);
1731
1732 /* Clear DTR and RTS. */
1733 if ((d->tty->t_cflag & HUPCL) || ! (d->tty->t_state & TS_ISOPEN)) {
1734 cx_set_dtr (d->chan, 0);
1735 cx_set_rts (d->chan, 0);
1736 if (d->dtrwait) {
1737 d->dtr_timeout_handle =
1738 timeout (cx_dtrwakeup, d, d->dtrwait);
1739 d->dtroff = 1;
1740 }
1741 }
1742 ttyclose (d->tty);
1743 splx (s);
1744 d->callout = 0;
1745
1746 /*
1747 * Wake up bidirectional opens.
1748 * Since we may be opened twice we couldn't call ttyrel() here.
1749 * So just keep d->tty for future use. It would be freed by
1750 * ttyrel() at cx_detach().
1751 */
1752
1753 wakeup (d);
1754 d->open_dev &= ~0x2;
1755
1756 return 0;
1757}
1758
1759static int cx_read (struct cdev *dev, struct uio *uio, int flag)
1760{
1761 drv_t *d = channel [UNIT (dev)];
1762
1763 if (d) CX_DEBUG2 (d, ("cx_read\n"));
1764 if (!d || d->chan->mode != M_ASYNC || IF_CUNIT(dev) || !d->tty)
1765 return EBADF;
1766
1767 return ttyld_read (d->tty, uio, flag);
1768}
1769
1770static int cx_write (struct cdev *dev, struct uio *uio, int flag)
1771{
1772 drv_t *d = channel [UNIT (dev)];
1773
1774 if (d) CX_DEBUG2 (d, ("cx_write\n"));
1775 if (!d || d->chan->mode != M_ASYNC || IF_CUNIT(dev) || !d->tty)
1776 return EBADF;
1777
1778 return ttyld_write (d->tty, uio, flag);
1779}
1780
1781static int cx_modem_status (drv_t *d)
1782{
1783 int status = 0, s = splhigh ();
1784 /* Already opened by someone or network interface is up? */
1785 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1786 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running))
1787 status = TIOCM_LE; /* always enabled while open */
1788
1789 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR;
1790 if (cx_get_cd (d->chan)) status |= TIOCM_CD;
1791 if (cx_get_cts (d->chan)) status |= TIOCM_CTS;
1792 if (d->chan->dtr) status |= TIOCM_DTR;
1793 if (d->chan->rts) status |= TIOCM_RTS;
1794 splx (s);
1795 return status;
1796}
1797
1798#if __FreeBSD_version < 500000
1799static int cx_ioctl (dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
1800#else
1801static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1802#endif
1803{
1804 drv_t *d = channel [UNIT (dev)];
1805 cx_chan_t *c;
1806 struct serial_statistics *st;
1807 int error, s;
1808 char mask[16];
1809
1810 if (!d || !(c = d->chan))
1811 return EINVAL;
1812
1813 switch (cmd) {
1814 case SERIAL_GETREGISTERED:
1815 CX_DEBUG2 (d, ("ioctl: getregistered\n"));
1816 bzero (mask, sizeof(mask));
1817 for (s=0; s<NCX*NCHAN; ++s)
1818 if (channel [s])
1819 mask [s/8] |= 1 << (s & 7);
1820 bcopy (mask, data, sizeof (mask));
1821 return 0;
1822
1823 case SERIAL_GETPORT:
1824 CX_DEBUG2 (d, ("ioctl: getport\n"));
1825 s = splhigh ();
1826 *(int *)data = cx_get_port (c);
1827 splx (s);
1828 if (*(int *)data<0)
1829 return (EINVAL);
1830 else
1831 return 0;
1832
1833 case SERIAL_SETPORT:
1834 CX_DEBUG2 (d, ("ioctl: setproto\n"));
1835 /* Only for superuser! */
1836#if __FreeBSD_version < 400000
1837 error = suser (p->p_ucred, &p->p_acflag);
1838#elif __FreeBSD_version < 500000
1839 error = suser (p);
1840#else /* __FreeBSD_version >= 500000 */
1841 error = suser (td);
1842#endif /* __FreeBSD_version >= 500000 */
1843 if (error)
1844 return error;
1845
1846 s = splhigh ();
1847 cx_set_port (c, *(int *)data);
1848 splx (s);
1849 return 0;
1850
1851#ifndef NETGRAPH
1852 case SERIAL_GETPROTO:
1853 CX_DEBUG2 (d, ("ioctl: getproto\n"));
1854 s = splhigh ();
1855 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" :
1856 (d->pp.pp_flags & PP_FR) ? "fr" :
1857 (d->pp.pp_if.if_flags & PP_CISCO) ? "cisco" : "ppp");
1858 splx (s);
1859 return 0;
1860
1861 case SERIAL_SETPROTO:
1862 CX_DEBUG2 (d, ("ioctl: setproto\n"));
1863 /* Only for superuser! */
1864#if __FreeBSD_version < 400000
1865 error = suser (p->p_ucred, &p->p_acflag);
1866#elif __FreeBSD_version < 500000
1867 error = suser (p);
1868#else /* __FreeBSD_version >= 500000 */
1869 error = suser (td);
1870#endif /* __FreeBSD_version >= 500000 */
1871 if (error)
1872 return error;
1873 if (c->mode == M_ASYNC)
1874 return EBUSY;
1875 if (d->pp.pp_if.if_flags & IFF_RUNNING)
1876 return EBUSY;
1877 if (! strcmp ("cisco", (char*)data)) {
1878 d->pp.pp_flags &= ~(PP_FR);
1879 d->pp.pp_flags |= PP_KEEPALIVE;
1880 d->pp.pp_if.if_flags |= PP_CISCO;
1881 } else if (! strcmp ("fr", (char*)data)) {
1882 d->pp.pp_if.if_flags &= ~(PP_CISCO);
1883 d->pp.pp_flags |= PP_FR | PP_KEEPALIVE;
1884 } else if (! strcmp ("ppp", (char*)data)) {
1885 d->pp.pp_flags &= ~(PP_FR | PP_KEEPALIVE);
1886 d->pp.pp_if.if_flags &= ~(PP_CISCO);
1887 } else
1888 return EINVAL;
1889 return 0;
1890
1891 case SERIAL_GETKEEPALIVE:
1892 CX_DEBUG2 (d, ("ioctl: getkeepalive\n"));
1893 if ((d->pp.pp_flags & PP_FR) ||
1894 (d->pp.pp_if.if_flags & PP_CISCO) ||
1895 (c->mode == M_ASYNC))
1896 return EINVAL;
1897 s = splhigh ();
1898 *(int*)data = (d->pp.pp_flags & PP_KEEPALIVE) ? 1 : 0;
1899 splx (s);
1900 return 0;
1901
1902 case SERIAL_SETKEEPALIVE:
1903 CX_DEBUG2 (d, ("ioctl: setkeepalive\n"));
1904 /* Only for superuser! */
1905#if __FreeBSD_version < 400000
1906 error = suser (p->p_ucred, &p->p_acflag);
1907#elif __FreeBSD_version < 500000
1908 error = suser (p);
1909#else /* __FreeBSD_version >= 500000 */
1910 error = suser (td);
1911#endif /* __FreeBSD_version >= 500000 */
1912 if (error)
1913 return error;
1914 if ((d->pp.pp_flags & PP_FR) ||
1915 (d->pp.pp_if.if_flags & PP_CISCO))
1916 return EINVAL;
1917 s = splhigh ();
1918 if (*(int*)data)
1919 d->pp.pp_flags |= PP_KEEPALIVE;
1920 else
1921 d->pp.pp_flags &= ~PP_KEEPALIVE;
1922 splx (s);
1923 return 0;
1924#endif /*NETGRAPH*/
1925
1926 case SERIAL_GETMODE:
1927 CX_DEBUG2 (d, ("ioctl: getmode\n"));
1928 s = splhigh ();
1929 *(int*)data = (c->mode == M_ASYNC) ?
1930 SERIAL_ASYNC : SERIAL_HDLC;
1931 splx (s);
1932 return 0;
1933
1934 case SERIAL_SETMODE:
1935 CX_DEBUG2 (d, ("ioctl: setmode\n"));
1936 /* Only for superuser! */
1937#if __FreeBSD_version < 400000
1938 error = suser (p->p_ucred, &p->p_acflag);
1939#elif __FreeBSD_version < 500000
1940 error = suser (p);
1941#else /* __FreeBSD_version >= 500000 */
1942 error = suser (td);
1943#endif /* __FreeBSD_version >= 500000 */
1944 if (error)
1945 return error;
1946
1947 /* Somebody is waiting for carrier? */
1948 if (d->lock)
1949 return EBUSY;
1950 /* /dev/ttyXX is already opened by someone? */
1951 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1952 (d->open_dev|0x2))
1953 return EBUSY;
1954 /* Network interface is up?
1955 * Cannot change to async mode. */
1956 if (c->mode != M_ASYNC && d->running &&
1957 (*(int*)data == SERIAL_ASYNC))
1958 return EBUSY;
1959
1960 s = splhigh ();
1961 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) {
1962 cx_set_mode (c, M_ASYNC);
1963 cx_enable_receive (c, 0);
1964 cx_enable_transmit (c, 0);
1965 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) {
1966 cx_set_mode (c, M_HDLC);
1967 cx_enable_receive (c, 1);
1968 cx_enable_transmit (c, 1);
1969 }
1970 splx (s);
1971 return 0;
1972
1973 case SERIAL_GETSTAT:
1974 CX_DEBUG2 (d, ("ioctl: getestat\n"));
1975 st = (struct serial_statistics*) data;
1976 s = splhigh ();
1977 st->rintr = c->rintr;
1978 st->tintr = c->tintr;
1979 st->mintr = c->mintr;
1980 st->ibytes = c->ibytes;
1981 st->ipkts = c->ipkts;
1982 st->ierrs = c->ierrs;
1983 st->obytes = c->obytes;
1984 st->opkts = c->opkts;
1985 st->oerrs = c->oerrs;
1986 splx (s);
1987 return 0;
1988
1989 case SERIAL_CLRSTAT:
1990 CX_DEBUG2 (d, ("ioctl: clrstat\n"));
1991 /* Only for superuser! */
1992#if __FreeBSD_version < 400000
1993 error = suser (p->p_ucred, &p->p_acflag);
1994#elif __FreeBSD_version < 500000
1995 error = suser (p);
1996#else /* __FreeBSD_version >= 500000 */
1997 error = suser (td);
1998#endif /* __FreeBSD_version >= 500000 */
1999 if (error)
2000 return error;
2001 s = splhigh ();
2002 c->rintr = 0;
2003 c->tintr = 0;
2004 c->mintr = 0;
2005 c->ibytes = 0;
2006 c->ipkts = 0;
2007 c->ierrs = 0;
2008 c->obytes = 0;
2009 c->opkts = 0;
2010 c->oerrs = 0;
2011 splx (s);
2012 return 0;
2013
2014 case SERIAL_GETBAUD:
2015 CX_DEBUG2 (d, ("ioctl: getbaud\n"));
2016 if (c->mode == M_ASYNC)
2017 return EINVAL;
2018 s = splhigh ();
2019 *(long*)data = cx_get_baud(c);
2020 splx (s);
2021 return 0;
2022
2023 case SERIAL_SETBAUD:
2024 CX_DEBUG2 (d, ("ioctl: setbaud\n"));
2025 /* Only for superuser! */
2026#if __FreeBSD_version < 400000
2027 error = suser (p->p_ucred, &p->p_acflag);
2028#elif __FreeBSD_version < 500000
2029 error = suser (p);
2030#else /* __FreeBSD_version >= 500000 */
2031 error = suser (td);
2032#endif /* __FreeBSD_version >= 500000 */
2033 if (error)
2034 return error;
2035 if (c->mode == M_ASYNC)
2036 return EINVAL;
2037 s = splhigh ();
2038 cx_set_baud (c, *(long*)data);
2039 splx (s);
2040 return 0;
2041
2042 case SERIAL_GETLOOP:
2043 CX_DEBUG2 (d, ("ioctl: getloop\n"));
2044 if (c->mode == M_ASYNC)
2045 return EINVAL;
2046 s = splhigh ();
2047 *(int*)data = cx_get_loop (c);
2048 splx (s);
2049 return 0;
2050
2051 case SERIAL_SETLOOP:
2052 CX_DEBUG2 (d, ("ioctl: setloop\n"));
2053 /* Only for superuser! */
2054#if __FreeBSD_version < 400000
2055 error = suser (p->p_ucred, &p->p_acflag);
2056#elif __FreeBSD_version < 500000
2057 error = suser (p);
2058#else /* __FreeBSD_version >= 500000 */
2059 error = suser (td);
2060#endif /* __FreeBSD_version >= 500000 */
2061 if (error)
2062 return error;
2063 if (c->mode == M_ASYNC)
2064 return EINVAL;
2065 s = splhigh ();
2066 cx_set_loop (c, *(int*)data);
2067 splx (s);
2068 return 0;
2069
2070 case SERIAL_GETDPLL:
2071 CX_DEBUG2 (d, ("ioctl: getdpll\n"));
2072 if (c->mode == M_ASYNC)
2073 return EINVAL;
2074 s = splhigh ();
2075 *(int*)data = cx_get_dpll (c);
2076 splx (s);
2077 return 0;
2078
2079 case SERIAL_SETDPLL:
2080 CX_DEBUG2 (d, ("ioctl: setdpll\n"));
2081 /* Only for superuser! */
2082#if __FreeBSD_version < 400000
2083 error = suser (p->p_ucred, &p->p_acflag);
2084#elif __FreeBSD_version < 500000
2085 error = suser (p);
2086#else /* __FreeBSD_version >= 500000 */
2087 error = suser (td);
2088#endif /* __FreeBSD_version >= 500000 */
2089 if (error)
2090 return error;
2091 if (c->mode == M_ASYNC)
2092 return EINVAL;
2093 s = splhigh ();
2094 cx_set_dpll (c, *(int*)data);
2095 splx (s);
2096 return 0;
2097
2098 case SERIAL_GETNRZI:
2099 CX_DEBUG2 (d, ("ioctl: getnrzi\n"));
2100 if (c->mode == M_ASYNC)
2101 return EINVAL;
2102 s = splhigh ();
2103 *(int*)data = cx_get_nrzi (c);
2104 splx (s);
2105 return 0;
2106
2107 case SERIAL_SETNRZI:
2108 CX_DEBUG2 (d, ("ioctl: setnrzi\n"));
2109 /* Only for superuser! */
2110#if __FreeBSD_version < 400000
2111 error = suser (p->p_ucred, &p->p_acflag);
2112#elif __FreeBSD_version < 500000
2113 error = suser (p);
2114#else /* __FreeBSD_version >= 500000 */
2115 error = suser (td);
2116#endif /* __FreeBSD_version >= 500000 */
2117 if (error)
2118 return error;
2119 if (c->mode == M_ASYNC)
2120 return EINVAL;
2121 s = splhigh ();
2122 cx_set_nrzi (c, *(int*)data);
2123 splx (s);
2124 return 0;
2125
2126 case SERIAL_GETDEBUG:
2127 CX_DEBUG2 (d, ("ioctl: getdebug\n"));
2128 s = splhigh ();
2129 *(int*)data = c->debug;
2130 splx (s);
2131 return 0;
2132
2133 case SERIAL_SETDEBUG:
2134 CX_DEBUG2 (d, ("ioctl: setdebug\n"));
2135 /* Only for superuser! */
2136#if __FreeBSD_version < 400000
2137 error = suser (p->p_ucred, &p->p_acflag);
2138#elif __FreeBSD_version < 500000
2139 error = suser (p);
2140#else /* __FreeBSD_version >= 500000 */
2141 error = suser (td);
2142#endif /* __FreeBSD_version >= 500000 */
2143 if (error)
2144 return error;
2145 s = splhigh ();
2146 c->debug = *(int*)data;
2147 splx (s);
2148#ifndef NETGRAPH
2149 if (d->chan->debug)
2150 d->pp.pp_if.if_flags |= IFF_DEBUG;
2151 else
2152 d->pp.pp_if.if_flags &= (~IFF_DEBUG);
2153#endif
2154 return 0;
2155 }
2156
2157 if (c->mode == M_ASYNC && !IF_CUNIT(dev) && d->tty) {
2158#if __FreeBSD_version >= 502113
2159 error = ttyioctl (dev, cmd, data, flag, td);
2160 ttyldoptim (d->tty);
2161 if (error != ENOTTY) {
2162 if (error)
2163 CX_DEBUG2 (d, ("ttioctl: 0x%lx, error %d\n", cmd, error));
2164 return error;
2165 }
2166#else
2167#if __FreeBSD_version >= 500000
2168 error = (*linesw[d->tty->t_line].l_ioctl) (d->tty, cmd, data, flag, td);
2169#else
2170 error = (*linesw[d->tty->t_line].l_ioctl) (d->tty, cmd, data, flag, p);
2171#endif
2172 ttyldoptim (d->tty);
2173 if (error != ENOIOCTL) {
2174 if (error)
2175 CX_DEBUG2 (d, ("l_ioctl: 0x%lx, error %d\n", cmd, error));
2176 return error;
2177 }
2178 error = ttioctl (d->tty, cmd, data, flag);
2179 ttyldoptim (d->tty);
2180 if (error != ENOIOCTL) {
2181 if (error)
2182 CX_DEBUG2 (d, ("ttioctl: 0x%lx, error %d\n", cmd, error));
2183 return error;
2184 }
2185#endif
2186 }
2187
2188 switch (cmd) {
2189 case TIOCSBRK: /* Start sending line break */
2190 CX_DEBUG2 (d, ("ioctl: tiocsbrk\n"));
2191 s = splhigh ();
2192 cx_send_break (c, 500);
2193 splx (s);
2194 return 0;
2195
2196 case TIOCCBRK: /* Stop sending line break */
2197 CX_DEBUG2 (d, ("ioctl: tioccbrk\n"));
2198 return 0;
2199
2200 case TIOCSDTR: /* Set DTR */
2201 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n"));
2202 s = splhigh ();
2203 cx_set_dtr (c, 1);
2204 splx (s);
2205 return 0;
2206
2207 case TIOCCDTR: /* Clear DTR */
2208 CX_DEBUG2 (d, ("ioctl: tioccdtr\n"));
2209 s = splhigh ();
2210 cx_set_dtr (c, 0);
2211 splx (s);
2212 return 0;
2213
2214 case TIOCMSET: /* Set DTR/RTS */
2215 CX_DEBUG2 (d, ("ioctl: tiocmset\n"));
2216 s = splhigh ();
2217 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0);
2218 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0);
2219 splx (s);
2220 return 0;
2221
2222 case TIOCMBIS: /* Add DTR/RTS */
2223 CX_DEBUG2 (d, ("ioctl: tiocmbis\n"));
2224 s = splhigh ();
2225 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1);
2226 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1);
2227 splx (s);
2228 return 0;
2229
2230 case TIOCMBIC: /* Clear DTR/RTS */
2231 CX_DEBUG2 (d, ("ioctl: tiocmbic\n"));
2232 s = splhigh ();
2233 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0);
2234 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0);
2235 splx (s);
2236 return 0;
2237
2238 case TIOCMGET: /* Get modem status */
2239 CX_DEBUG2 (d, ("ioctl: tiocmget\n"));
2240 *(int*)data = cx_modem_status (d);
2241 return 0;
2242
2243#ifdef TIOCMSDTRWAIT
2244 case TIOCMSDTRWAIT:
2245 CX_DEBUG2 (d, ("ioctl: tiocmsdtrwait\n"));
2246 /* Only for superuser! */
2247#if __FreeBSD_version < 400000
2248 error = suser (p->p_ucred, &p->p_acflag);
2249#elif __FreeBSD_version < 500000
2250 error = suser (p);
2251#else /* __FreeBSD_version >= 500000 */
2252 error = suser (td);
2253#endif /* __FreeBSD_version >= 500000 */
2254 if (error)
2255 return error;
2256 s = splhigh ();
2257 d->dtrwait = *(int*)data * hz / 100;
2258 splx (s);
2259 return 0;
2260#endif
2261
2262#ifdef TIOCMGDTRWAIT
2263 case TIOCMGDTRWAIT:
2264 CX_DEBUG2 (d, ("ioctl: tiocmgdtrwait\n"));
2265 s = splhigh ();
2266 *(int*)data = d->dtrwait * 100 / hz;
2267 splx (s);
2268 return 0;
2269#endif
2270 }
2271 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd));
2272 return ENOTTY;
2273}
2274
2275/*
2276 * Wake up opens() waiting for DTR ready.
2277 */
2278static void cx_dtrwakeup (void *arg)
2279{
2280 drv_t *d = arg;
2281
2282 d->dtroff = 0;
2283 wakeup (&d->dtrwait);
2284}
2285
2286
2287#if __FreeBSD_version < 502113
2288static void
2289ttyldoptim(tp)
2290 struct tty *tp;
2291{
2292 struct termios *t;
2293
2294 t = &tp->t_termios;
2295 if (CONDITION(t,tp))
2296 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2297 else
2298 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2299}
2300#endif
2301
2302#if __FreeBSD_version >= 500000
2303void cx_softintr (void *unused)
2304#else
2305void cx_softintr ()
2306#endif
2307{
2308 drv_t *d;
2309 async_q *q;
2310 int i, s, ic, k;
2311 while (MY_SOFT_INTR) {
2312 MY_SOFT_INTR = 0;
2313 for (i=0; i<NCX*NCHAN; ++i) {
2314 d = channel [i];
2315 if (!d || !d->chan || d->chan->type == T_NONE
2316 || d->chan->mode != M_ASYNC || !d->tty
2317 || !d->tty->t_dev)
2318 continue;
2319 s = splhigh ();
2320 if (d->intr_action & CX_READ) {
2321 q = &(d->aqueue);
2322 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) {
2323 k = AQ_GSZ(q);
2324 if (d->tty->t_rawq.c_cc + k >
2325 d->tty->t_ihiwat
2326 && (d->tty->t_cflag & CRTS_IFLOW
2327 || d->tty->t_iflag & IXOFF)
2328 && !(d->tty->t_state & TS_TBLOCK))
2329 ttyblock(d->tty);
2330 d->tty->t_rawcc += k;
2331 while (k>0) {
2332 k--;
2333 AQ_POP (q, ic);
2334 splx (s);
2335 putc (ic, &d->tty->t_rawq);
2336 s = splhigh ();
2337 }
2338 ttwakeup(d->tty);
2339 if (d->tty->t_state & TS_TTSTOP
2340 && (d->tty->t_iflag & IXANY
2341 || d->tty->t_cc[VSTART] ==
2342 d->tty->t_cc[VSTOP])) {
2343 d->tty->t_state &= ~TS_TTSTOP;
2344 d->tty->t_lflag &= ~FLUSHO;
2345 d->intr_action |= CX_WRITE;
2346 }
2347 } else {
2348 while (q->end != q->beg) {
2349 AQ_POP (q, ic);
2350 splx (s);
2351 ttyld_rint (d->tty, ic);
2352 s = splhigh ();
2353 }
2354 }
2355 d->intr_action &= ~CX_READ;
2356 }
2357 splx (s);
2358
2359 s = splhigh ();
2360 if (d->intr_action & CX_WRITE) {
2361 if (d->tty->t_line)
2362 ttyld_start (d->tty);
2363 else
2364 cx_oproc (d->tty);
2365 d->intr_action &= ~CX_WRITE;
2366 }
2367 splx (s);
2368
2369 }
2370 }
2371}
2372
2373/*
2374 * Fill transmitter buffer with data.
2375 */
2376static void cx_oproc (struct tty *tp)
2377{
2378 int s = splhigh (), k;
2379 drv_t *d = channel [UNIT (tp->t_dev)];
2380 static u_char buf[DMABUFSZ];
2381 u_char *p;
2382 u_short len = 0, sublen = 0;
2383
2384 if (!d) {
2385 splx (s);
2386 return;
2387 }
2388
2389 CX_DEBUG2 (d, ("cx_oproc\n"));
2390 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts)
2391 cx_set_rts (d->chan, 0);
2392 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts)
2393 cx_set_rts (d->chan, 1);
2394
2395 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) {
2396 /* Start transmitter. */
2397 cx_enable_transmit (d->chan, 1);
2398
2399 /* Is it busy? */
2400 if (! cx_buf_free (d->chan)) {
2401 tp->t_state |= TS_BUSY;
2402 splx (s);
2403 return;
2404 }
2405 if (tp->t_iflag & IXOFF) {
2406 p = (buf + (DMABUFSZ/2));
2407 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
2408 k = sublen;
2409 while (k--) {
2410 /* Send XON/XOFF out of band. */
2411 if (*p == tp->t_cc[VSTOP]) {
2412 cx_xflow_ctl (d->chan, 0);
2413 p++;
2414 continue;
2415 }
2416 if (*p == tp->t_cc[VSTART]) {
2417 cx_xflow_ctl (d->chan, 1);
2418 p++;
2419 continue;
2420 }
2421 buf[len] = *p;
2422 len++;
2423 p++;
2424 }
2425 } else {
2426 p = buf;
2427 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
2428 }
2429 if (len) {
2430 cx_send_packet (d->chan, buf, len, 0);
2431 tp->t_state |= TS_BUSY;
2432 d->atimeout = 10;
2433 CX_DEBUG2 (d, ("out %d bytes\n", len));
2434 }
2435 }
2436 ttwwakeup (tp);
2437 splx (s);
2438}
2439
2440static int cx_param (struct tty *tp, struct termios *t)
2441{
2442 drv_t *d = channel [UNIT (tp->t_dev)];
2443 int s, bits, parity;
2444
2445 if (!d)
2446 return EINVAL;
2447
2448 s = splhigh ();
2449 if (t->c_ospeed == 0) {
2450 /* Clear DTR and RTS. */
2451 cx_set_dtr (d->chan, 0);
2452 splx (s);
2453 CX_DEBUG2 (d, ("cx_param (hangup)\n"));
2454 return 0;
2455 }
2456 CX_DEBUG2 (d, ("cx_param\n"));
2457
2458 /* Check requested parameters. */
2459 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) {
2460 splx (s);
2461 return EINVAL;
2462 }
2463 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) {
2464 splx (s);
2465 return EINVAL;
2466 }
2467
2468 /* And copy them to tty and channel structures. */
2469 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed;
2470 tp->t_cflag = t->c_cflag;
2471
2472 /* Set character length and parity mode. */
2473 switch (t->c_cflag & CSIZE) {
2474 default:
2475 case CS8: bits = 8; break;
2476 case CS7: bits = 7; break;
2477 case CS6: bits = 6; break;
2478 case CS5: bits = 5; break;
2479 }
2480
2481 parity = ((t->c_cflag & PARENB) ? 1 : 0) *
2482 (1 + ((t->c_cflag & PARODD) ? 0 : 1));
2483
2484 /* Set current channel number. */
2485 if (! d->chan->dtr)
2486 cx_set_dtr (d->chan, 1);
2487
2488 ttyldoptim (tp);
2489 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB),
2490 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS),
2491 (t->c_iflag & IXON), (t->c_iflag & IXANY),
2492 t->c_cc[VSTART], t->c_cc[VSTOP]);
2493 splx (s);
2494 return 0;
2495}
2496
2497#if __FreeBSD_version < 400000
2498static struct tty *cx_devtotty (dev_t dev)
2499{
2500 int unit = UNIT (dev);
2501
2502 if (unit == UNIT_CTL || unit >= NCX*NCHAN || ! channel[unit])
2503 return 0;
2504 return channel[unit]->tty;
2505}
2506#endif
2507
2508/*
2509 * Stop output on a line
2510 */
2511static void cx_stop (struct tty *tp, int flag)
2512{
2513 drv_t *d = channel [UNIT (tp->t_dev)];
2514 int s;
2515
2516 if (!d)
2517 return;
2518
2519 s = splhigh ();
2520
2521 if (tp->t_state & TS_BUSY) {
2522 /* Stop transmitter */
2523 CX_DEBUG2 (d, ("cx_stop\n"));
2524 cx_transmitter_ctl (d->chan, 0);
2525 }
2526 splx (s);
2527}
2528
2529/*
2530 * Process the (delayed) carrier signal setup.
2531 */
2532static void cx_carrier (void *arg)
2533{
2534 drv_t *d = arg;
2535 cx_chan_t *c = d->chan;
2536 int s, cd;
2537
2538 s = splhigh ();
2539 cd = cx_get_cd (c);
2540 if (d->cd != cd) {
2541 if (cd) {
2542 CX_DEBUG (d, ("carrier on\n"));
2543 d->cd = 1;
2544 splx (s);
2545 if (d->tty)
2546 ttyld_modem(d->tty, 1);
2547 } else {
2548 CX_DEBUG (d, ("carrier loss\n"));
2549 d->cd = 0;
2550 splx (s);
2551 if (d->tty)
2552 ttyld_modem(d->tty, 0);
2553 }
2554 }
2555}
2556
2557/*
2558 * Modem signal callback function.
2559 */
2560static void cx_modem (cx_chan_t *c)
2561{
2562 drv_t *d = c->sys;
2563
2564 if (!d || c->mode != M_ASYNC)
2565 return;
2566 /* Handle carrier detect/loss. */
2567 untimeout (cx_carrier, c, d->dcd_timeout_handle);
2568 /* Carrier changed - delay processing DCD for a while
2569 * to give both sides some time to initialize. */
2570 d->dcd_timeout_handle = timeout (cx_carrier, d, hz/2);
2571}
2572
2573#if __FreeBSD_version < 400000
2574struct isa_driver cxdriver = { cx_probe, cx_attach, "cx" };
2575static struct cdevsw cx_cdevsw = {
2576 cx_open, cx_close, cx_read, cx_write,
2577 cx_ioctl, cx_stop, noreset, cx_devtotty,
2578 ttpoll, nommap, NULL, "cx",
2579 NULL, -1,
2580};
2581#elif __FreeBSD_version < 500000
2582static struct cdevsw cx_cdevsw = {
2583 cx_open, cx_close, cx_read, cx_write,
2584 cx_ioctl, ttypoll, nommap, nostrategy,
2585 "cx", CDEV_MAJOR, nodump, nopsize,
2586 D_TTY, -1
2587};
2588#elif __FreeBSD_version == 500000
2589static struct cdevsw cx_cdevsw = {
2590 cx_open, cx_close, cx_read, cx_write,
2591 cx_ioctl, ttypoll, nommap, nostrategy,
2592 "cx", CDEV_MAJOR, nodump, nopsize,
2593 D_TTY,
2594 };
2595#elif __FreeBSD_version <= 501000
2596static struct cdevsw cx_cdevsw = {
2597 .d_open = cx_open,
2598 .d_close = cx_close,
2599 .d_read = cx_read,
2600 .d_write = cx_write,
2601 .d_ioctl = cx_ioctl,
2602 .d_poll = ttypoll,
2603 .d_mmap = nommap,
2604 .d_strategy = nostrategy,
2605 .d_name = "cx",
2606 .d_maj = CDEV_MAJOR,
2607 .d_dump = nodump,
2608 .d_flags = D_TTY,
2609};
2610#elif __FreeBSD_version < 502103
2611static struct cdevsw cx_cdevsw = {
2612 .d_open = cx_open,
2613 .d_close = cx_close,
2614 .d_read = cx_read,
2615 .d_write = cx_write,
2616 .d_ioctl = cx_ioctl,
2617 .d_poll = ttypoll,
2618 .d_name = "cx",
2619 .d_maj = CDEV_MAJOR,
2620 .d_flags = D_TTY,
2621};
2622#else /* __FreeBSD_version >= 502103 */
2623static struct cdevsw cx_cdevsw = {
2624 .d_version = D_VERSION,
2625 .d_open = cx_open,
2626 .d_close = cx_close,
2627 .d_read = cx_read,
2628 .d_write = cx_write,
2629 .d_ioctl = cx_ioctl,
2630 .d_name = "cx",
2631 .d_maj = CDEV_MAJOR,
2632 .d_flags = D_TTY | D_NEEDGIANT,
2633};
2634#endif
2635
2636#ifdef NETGRAPH
2637#if __FreeBSD_version >= 500000
2638static int ng_cx_constructor (node_p node)
2639{
2640 drv_t *d = NG_NODE_PRIVATE (node);
2641#else
2642static int ng_cx_constructor (node_p *node)
2643{
2644 drv_t *d = (*node)->private;
2645#endif
2646 CX_DEBUG (d, ("Constructor\n"));
2647 return EINVAL;
2648}
2649
2650static int ng_cx_newhook (node_p node, hook_p hook, const char *name)
2651{
2652 int s;
2653#if __FreeBSD_version >= 500000
2654 drv_t *d = NG_NODE_PRIVATE (node);
2655#else
2656 drv_t *d = node->private;
2657#endif
2658
2659 if (d->chan->mode == M_ASYNC)
2660 return EINVAL;
2661
2662 /* Attach debug hook */
2663 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) {
2664#if __FreeBSD_version >= 500000
2665 NG_HOOK_SET_PRIVATE (hook, NULL);
2666#else
2667 hook->private = 0;
2668#endif
2669 d->debug_hook = hook;
2670 return 0;
2671 }
2672
2673 /* Check for raw hook */
2674 if (strcmp (name, NG_CX_HOOK_RAW) != 0)
2675 return EINVAL;
2676
2677#if __FreeBSD_version >= 500000
2678 NG_HOOK_SET_PRIVATE (hook, d);
2679#else
2680 hook->private = d;
2681#endif
2682 d->hook = hook;
2683 s = splhigh ();
2684 cx_up (d);
2685 splx (s);
2686 return 0;
2687}
2688
2689static int print_modems (char *s, cx_chan_t *c, int need_header)
2690{
2691 int status = cx_modem_status (c->sys);
2692 int length = 0;
2693
2694 if (need_header)
2695 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n");
2696 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n",
2697 status & TIOCM_LE ? "On" : "-",
2698 status & TIOCM_DTR ? "On" : "-",
2699 status & TIOCM_DSR ? "On" : "-",
2700 status & TIOCM_RTS ? "On" : "-",
2701 status & TIOCM_CTS ? "On" : "-",
2702 status & TIOCM_CD ? "On" : "-");
2703 return length;
2704}
2705
2706static int print_stats (char *s, cx_chan_t *c, int need_header)
2707{
2708 int length = 0;
2709
2710 if (need_header)
2711 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n");
2712 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n",
2713 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts,
2714 c->ierrs, c->obytes, c->opkts, c->oerrs);
2715 return length;
2716}
2717
2718static int print_chan (char *s, cx_chan_t *c)
2719{
2720 drv_t *d = c->sys;
2721 int length = 0;
2722
2723 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num);
2724 if (d->chan->debug)
2725 length += sprintf (s + length, " debug=%d", d->chan->debug);
2726
2727 if (cx_get_baud (c))
2728 length += sprintf (s + length, " %ld", cx_get_baud (c));
2729 else
2730 length += sprintf (s + length, " extclock");
2731
2732 if (c->mode == M_HDLC) {
2733 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off");
2734 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off");
2735 }
2736
2737 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n");
2738 return length;
2739}
2740
2741#if __FreeBSD_version >= 500000
2742static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook)
2743{
2744 drv_t *d = NG_NODE_PRIVATE (node);
2745 struct ng_mesg *msg;
2746#else
2747static int ng_cx_rcvmsg (node_p node, struct ng_mesg *msg,
2748 const char *retaddr, struct ng_mesg **rptr)
2749{
2750 drv_t *d = node->private;
2751#endif
2752 struct ng_mesg *resp = NULL;
2753 int error = 0;
2754
2755 if (!d)
2756 return EINVAL;
2757
2758 CX_DEBUG (d, ("Rcvmsg\n"));
2759#if __FreeBSD_version >= 500000
2760 NGI_GET_MSG (item, msg);
2761#endif
2762 switch (msg->header.typecookie) {
2763 default:
2764 error = EINVAL;
2765 break;
2766
2767 case NGM_CX_COOKIE:
2768 printf ("Don't forget to implement\n");
2769 error = EINVAL;
2770 break;
2771
2772 case NGM_GENERIC_COOKIE:
2773 switch (msg->header.cmd) {
2774 default:
2775 error = EINVAL;
2776 break;
2777
2778 case NGM_TEXT_STATUS: {
2779 char *s;
2780 int l = 0;
2781 int dl = sizeof (struct ng_mesg) + 730;
2782
2783#if __FreeBSD_version >= 500000
2784 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT);
2785 if (! resp) {
2786 error = ENOMEM;
2787 break;
2788 }
2789#else
2790 MALLOC (resp, struct ng_mesg *, dl,
2791 M_NETGRAPH, M_NOWAIT);
2792 if (! resp) {
2793 error = ENOMEM;
2794 break;
2795 }
2796#endif
2797 bzero (resp, dl);
2798 s = (resp)->data;
2799 l += print_chan (s + l, d->chan);
2800 l += print_stats (s + l, d->chan, 1);
2801 l += print_modems (s + l, d->chan, 1);
2802#if __FreeBSD_version < 500000
2803 (resp)->header.version = NG_VERSION;
2804 (resp)->header.arglen = strlen (s) + 1;
2805 (resp)->header.token = msg->header.token;
2806 (resp)->header.typecookie = NGM_CX_COOKIE;
2807 (resp)->header.cmd = msg->header.cmd;
2808#endif
2809 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRLEN);
2810 }
2811 break;
2812 }
2813 break;
2814 }
2815#if __FreeBSD_version >= 500000
2816 NG_RESPOND_MSG (error, node, item, resp);
2817 NG_FREE_MSG (msg);
2818#else
2819 *rptr = resp;
2820 FREE (msg, M_NETGRAPH);
2821#endif
2822 return error;
2823}
2824
2825#if __FreeBSD_version >= 500000
2826static int ng_cx_rcvdata (hook_p hook, item_p item)
2827{
2828 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook));
2829 struct mbuf *m;
2830 meta_p meta;
2831#else
2832static int ng_cx_rcvdata (hook_p hook, struct mbuf *m, meta_p meta)
2833{
2834 drv_t *d = hook->node->private;
2835#endif
2836 struct ifqueue *q;
2837 int s;
2838
2839#if __FreeBSD_version >= 500000
2840 NGI_GET_M (item, m);
2841 NGI_GET_META (item, meta);
2842 NG_FREE_ITEM (item);
2843 if (! NG_HOOK_PRIVATE (hook) || ! d) {
2844 NG_FREE_M (m);
2845 NG_FREE_META (meta);
2846#else
2847 if (! hook->private || ! d) {
2848 NG_FREE_DATA (m,meta);
2849#endif
2850 return ENETDOWN;
2851 }
2852 q = (meta && meta->priority > 0) ? &d->hi_queue : &d->lo_queue;
2853 s = splhigh ();
2854#if __FreeBSD_version >= 500000
2855 IF_LOCK (q);
2856 if (_IF_QFULL (q)) {
2857 _IF_DROP (q);
2858 IF_UNLOCK (q);
2859 splx (s);
2860 NG_FREE_M (m);
2861 NG_FREE_META (meta);
2862 return ENOBUFS;
2863 }
2864 _IF_ENQUEUE (q, m);
2865 IF_UNLOCK (q);
2866#else
2867 if (IF_QFULL (q)) {
2868 IF_DROP (q);
2869 splx (s);
2870 NG_FREE_DATA (m, meta);
2871 return ENOBUFS;
2872 }
2873 IF_ENQUEUE (q, m);
2874#endif
2875 cx_start (d);
2876 splx (s);
2877 return 0;
2878}
2879
2880static int ng_cx_rmnode (node_p node)
2881{
2882#if __FreeBSD_version >= 500000
2883 drv_t *d = NG_NODE_PRIVATE (node);
2884
2885 CX_DEBUG (d, ("Rmnode\n"));
2886 if (d && d->running) {
2887 int s = splhigh ();
2888 cx_down (d);
2889 splx (s);
2890 }
2891#ifdef KLD_MODULE
2892 if (node->nd_flags & NG_REALLY_DIE) {
2893 NG_NODE_SET_PRIVATE (node, NULL);
2894 NG_NODE_UNREF (node);
2895 }
2896 node->nd_flags &= ~NG_INVALID;
2897#endif
2898#else /* __FreeBSD_version < 500000 */
2899 drv_t *d = node->private;
2900 int s;
2901
2902 s = splhigh ();
2903 cx_down (d);
2904 splx (s);
2905 node->flags |= NG_INVALID;
2906 ng_cutlinks (node);
2907#ifdef KLD_MODULE
2908 ng_unname (node);
2909 ng_unref (node);
2910#else
2911 node->flags &= ~NG_INVALID;
2912#endif
2913#endif
2914 return 0;
2915}
2916
2917static void ng_cx_watchdog (void *arg)
2918{
2919 drv_t *d = arg;
2920
2921 if (d->timeout == 1)
2922 cx_watchdog (d);
2923 if (d->timeout)
2924 d->timeout--;
2925 d->timeout_handle = timeout (ng_cx_watchdog, d, hz);
2926}
2927
2928static int ng_cx_connect (hook_p hook)
2929{
2930#if __FreeBSD_version >= 500000
2931 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2932#else
2933 drv_t *d = hook->node->private;
2934#endif
2935
2936 d->timeout_handle = timeout (ng_cx_watchdog, d, hz);
2937 return 0;
2938}
2939
2940static int ng_cx_disconnect (hook_p hook)
2941{
2942#if __FreeBSD_version >= 500000
2943 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2944#else
2945 drv_t *d = hook->node->private;
2946#endif
2947 int s;
2948
2949 s = splhigh ();
2950#if __FreeBSD_version >= 500000
2951 if (NG_HOOK_PRIVATE (hook))
2952#else
2953 if (hook->private)
2954#endif
2955 cx_down (d);
2956 splx (s);
2957 untimeout (ng_cx_watchdog, d, d->timeout_handle);
2958 return 0;
2959}
2960#endif /*NETGRAPH*/
2961
2962#ifdef KLD_MODULE
2963#if __FreeBSD_version < 400000
2964/*
2965 * Function called when loading the driver.
2966 */
2967static int cx_load (void)
2968{
2969 int i;
2970
2971 for (i=0;i<NCX; ++i) {
2972 struct isa_device id = {-1, &cxdriver, -1, 0, -1, 0, 0, (inthand2_t *)cx_intr, i, 0, 0, 0, 0 ,0 ,1 ,0 ,0};
2973
2974 disable_intr();
2975 if (!cx_probe (&id)) {
2976 enable_intr();
2977 break;
2978 }
2979 cx_attach (&id);
2980 register_intr ((adapter [i])->irq, 0, 0, (inthand2_t*) cx_intr,
2981 &net_imask, id.id_unit);
2982 enable_intr();
2983 }
2984 if (!i) {
2985 /* Deactivate the timeout routine. And soft interrupt*/
2986 untimeout (cx_timeout, 0, timeout_handle);
2987 unregister_swi (SWI_TTY, cx_softintr);
2988 return ENXIO;
2989 }
2990 return 0;
2991}
2992
2993/*
2994 * Function called when unloading the driver.
2995 */
2996static int cx_unload (void)
2997{
2998 int i, s;
2999
3000 /* Check if the device is busy (open). */
3001 for (i=0; i<NCX*NCHAN; ++i) {
3002 drv_t *d = channel[i];
3003 cx_chan_t *c;
3004
3005 if (!d || (c=d->chan)->type == T_NONE)
3006 continue;
3007 if (d->lock)
3008 return EBUSY;
3009 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
3010 (d->open_dev|0x2))
3011 return EBUSY;
3012 if (d->running)
3013 return EBUSY;
3014
3015 }
3016
3017 s = splhigh ();
3018
3019 /* Deactivate the timeout routine. And soft interrupt*/
3020 for (i=0; i<NCX; ++i) {
3021 cx_board_t *b = adapter [i];
3022
3023 if (!b || ! b->port)
3024 continue;
3025 untimeout (cx_timeout, 0, timeout_handle);
3026 unregister_swi (SWI_TTY, cx_softintr);
3027 break;
3028 }
3029
3030 for (i=0; i<NCX*NCHAN; ++i) {
3031 drv_t *d = channel[i];
3032 cx_chan_t *c;
3033
3034 if (!d || (c=d->chan)->type == T_NONE)
3035 continue;
3036
3037 if (d->dtr_timeout_handle.callout)
3038 untimeout (cx_dtrwakeup, d, d->dtr_timeout_handle);
3039 if (d->dcd_timeout_handle.callout)
3040 untimeout (cx_carrier, c, d->dcd_timeout_handle);
3041 }
3042
3043 /* Close all active boards. */
3044 for (i=0; i<NCX; ++i) {
3045 cx_board_t *b = adapter [i];
3046
3047 if (!b || ! b->port)
3048 continue;
3049
3050 cx_close_board (b);
3051 }
3052
3053 for (i=0; i<NCX; ++i) {
3054 cx_board_t *b = adapter [i];
3055
3056 if (!b || ! b->port)
3057 continue;
3058
3059 if (led_timo[i].callout)
3060 untimeout (cx_led_off, b, led_timo[i]);
3061 }
3062
3063 /* OK to unload the driver, unregister the interrupt first. */
3064 for (i=0; i<NCX; ++i) {
3065 cx_board_t *b = adapter [i];
3066
3067 if (!b || ! b->port)
3068 continue;
3069 /* Disable the interrupt request. */
3070 disable_intr();
3071 unregister_intr (b->irq, (inthand2_t *)cx_intr);
3072 isa_dma_release (b->dma);
3073 enable_intr();
3074 }
3075 splx (s);
3076
3077 s = splhigh ();
3078 /* Detach the interfaces, free buffer memory. */
3079 for (i=0; i<NCX*NCHAN; ++i) {
3080 drv_t *d = channel[i];
3081 cx_chan_t *c;
3082
3083 if (!d || (c=d->chan)->type == T_NONE)
3084 continue;
3085
3086#ifndef NETGRAPH
3087#if NBPFILTER > 0
3088 /* Detach from the packet filter list of interfaces. */
3089 {
3090 struct bpf_if *q, **b = &bpf_iflist;
3091
3092 while ((q = *b)) {
3093 if (q->bif_ifp == d->pp.pp_if) {
3094 *b = q->bif_next;
3095 free (q, M_DEVBUF);
3096 }
3097 b = &(q->bif_next);
3098 }
3099 }
3100#endif /* NBPFILTER */
3101 /* Detach from the sync PPP list. */
3102 sppp_detach (&d->pp.pp_if);
3103
3104 /* Detach from the system list of interfaces. */
3105 {
3106 struct ifaddr *ifa;
3107 TAILQ_FOREACH (ifa, &d->pp.pp_if.if_addrhead, ifa_link) {
3108 TAILQ_REMOVE (&d->pp.pp_if.if_addrhead, ifa, ifa_link);
3109 free (ifa, M_IFADDR);
3110 }
3111 TAILQ_REMOVE (&ifnet, &d->pp.pp_if, if_link);
3112 }
3113#endif /* !NETGRAPH */
3114 /* Deallocate buffers. */
3115/* free (d, M_DEVBUF);*/
3116 }
3117
3118 for (i=0; i<NCX; ++i) {
3119 cx_board_t *b = adapter [i];
3120 if (!b)
3121 continue;
3122 adapter [b->num] = 0;
3123 free (b, M_DEVBUF);
3124 }
3125
3126 splx (s);
3127
3128 return 0;
3129}
3130
3131#define devsw(a) cdevsw[major((a))]
3132#endif /* __FreeBSD_version < 400000 */
3133#endif /* KLD_MODULE */
3134
3135#if __FreeBSD_version < 400000
3136#ifdef KLD_MODULE
3137static int cx_modevent (module_t mod, int type, void *unused)
3138{
3139 dev_t dev;
3140 int result;
3141 static int load_count = 0;
3142
3143 dev = makedev (CDEV_MAJOR, 0);
3144 switch (type) {
3145 case MOD_LOAD:
3146 if (devsw(dev))
3147 return (ENXIO);
3148 load_count ++;
3149 cdevsw_add (&dev, &cx_cdevsw, NULL);
3150 timeout_handle = timeout (cx_timeout, 0, hz*5);
3151
3152 /* Software interrupt. */
3153 register_swi (SWI_TTY, cx_softintr);
3154
3155 result = cx_load ();
3156 return result;
3157 case MOD_UNLOAD:
3158 result = cx_unload ();
3159 if (result)
3160 return result;
3161 if (devsw(dev)&&!(load_count-1)) {
3162 cdevsw_add (&dev, NULL, NULL);
3163 }
3164 load_count --;
3165 return result;
3166 case MOD_SHUTDOWN:
3167 break;
3168 }
3169 return 0;
3170}
3171#endif /* KLD_MODULE */
3172#else /* __FreeBSD_version >= 400000 */
3173static int cx_modevent (module_t mod, int type, void *unused)
3174{
3175 struct cdev *dev;
3176 static int load_count = 0;
3177 struct cdevsw *cdsw;
3178
3179#if __FreeBSD_version >= 502103
3180 dev = udev2dev (makeudev(CDEV_MAJOR, 0));
3181#else
3182 dev = makedev (CDEV_MAJOR, 0);
3183#endif
3184 switch (type) {
3185 case MOD_LOAD:
3186 if (dev != NODEV &&
3187 (cdsw = devsw (dev)) &&
3188 cdsw->d_maj == CDEV_MAJOR) {
3189 printf ("Sigma driver is already in system\n");
3190 return (EEXIST);
3191 }
3192#if __FreeBSD_version >= 500000 && defined NETGRAPH
3193 if (ng_newtype (&typestruct))
3194 printf ("Failed to register ng_cx\n");
3195#endif
3196 ++load_count;
3197#if __FreeBSD_version <= 500000
3198 cdevsw_add (&cx_cdevsw);
3199#endif
3200 timeout_handle = timeout (cx_timeout, 0, hz*5);
3201 /* Software interrupt. */
3202#if __FreeBSD_version < 500000
3203 register_swi (SWI_TTY, cx_softintr);
3204#else
3205 swi_add(&tty_ithd, "tty:cx", cx_softintr, NULL, SWI_TTY, 0,
3206 &cx_fast_ih);
3207#endif
3208 break;
3209 case MOD_UNLOAD:
3210 if (load_count == 1) {
3211 printf ("Removing device entry for Sigma\n");
3212#if __FreeBSD_version <= 500000
3213 cdevsw_remove (&cx_cdevsw);
3214#endif
3215#if __FreeBSD_version >= 500000 && defined NETGRAPH
3216 ng_rmtype (&typestruct);
3217#endif
3218 }
3219 if (timeout_handle.callout)
3220 untimeout (cx_timeout, 0, timeout_handle);
3221#if __FreeBSD_version >= 500000
3222 ithread_remove_handler (cx_fast_ih);
3223#else
3224 unregister_swi (SWI_TTY, cx_softintr);
3225#endif
3226 --load_count;
3227 break;
3228 case MOD_SHUTDOWN:
3229 break;
3230 }
3231 return 0;
3232}
3233#endif /* __FreeBSD_version >= 400000 */
3234
3235#ifdef NETGRAPH
3236static struct ng_type typestruct = {
3237 .version = NG_ABI_VERSION,
3238 .name = NG_CX_NODE_TYPE,
3239 .constructor = ng_cx_constructor,
3240 .rcvmsg = ng_cx_rcvmsg,
3241 .shutdown = ng_cx_rmnode,
3242 .newhook = ng_cx_newhook,
3243 .connect = ng_cx_connect,
3244 .rcvdata = ng_cx_rcvdata,
3245 .disconnect = ng_cx_disconnect
3246};
3247
3248#if __FreeBSD_version < 400000
3249NETGRAPH_INIT_ORDERED (cx, &typestruct, SI_SUB_DRIVERS,\
3250 SI_ORDER_MIDDLE + CDEV_MAJOR);
3251#endif
3252#endif /*NETGRAPH*/
3253
3254#if __FreeBSD_version >= 500000
3255#ifdef NETGRAPH
3256MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION);
3257#else
3258MODULE_DEPEND (isa_cx, sppp, 1, 1, 1);
3259#endif
3260#ifdef KLD_MODULE
3261DRIVER_MODULE (cxmod, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL);
3262#else
3263DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL);
3264#endif
3265#elif __FreeBSD_version >= 400000
3266#ifdef NETGRAPH
3267DRIVER_MODULE(cx, isa, cx_isa_driver, cx_devclass, ng_mod_event, &typestruct);
3268#else
3269DRIVER_MODULE(cx, isa, cx_isa_driver, cx_devclass, cx_modevent, 0);
3270#endif
3271#else /* __FreeBSD_version < 400000 */
3272#ifdef KLD_MODULE
3273#ifndef NETGRAPH
3274static moduledata_t cxmod = { "cx", cx_modevent, NULL};
3275DECLARE_MODULE (cx, cxmod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR);
3276#endif
3277#else /* KLD_MODULE */
3278
3279/*
3280 * Now for some driver initialisation.
3281 * Occurs ONCE during boot (very early).
3282 * This is if we are NOT a loadable module.
3283 */
3284static void cx_drvinit (void *unused)
3285{
3286#if __FreeBSD_version < 400000
3287 dev_t dev;
3288
3289 dev = makedev (CDEV_MAJOR, 0);
3290 cdevsw_add (&dev, &cx_cdevsw, NULL);
3291#else
3292 cdevsw_add (&cx_cdevsw);
3293#endif
3294
3295 /* Activate the timeout routine. */
3296 timeout_handle = timeout (cx_timeout, 0, hz*5);
3297
3298 /* Software interrupt. */
3299 register_swi (SWI_TTY, cx_softintr);
3300#ifdef NETGRAPH
3301#if 0
3302 /* Register our node type in netgraph */
3303 if (ng_newtype (&typestruct))
3304 printf ("Failed to register ng_cx\n");
3305#endif
3306#endif
3307}
3308
3309SYSINIT (cxdev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE+CDEV_MAJOR, cx_drvinit, 0)
3310
3311#endif /* KLD_MODULE */
3312#endif /* __FreeBSD_version < 400000 */
3313#endif /* NCX */