if_cx.c revision 138640
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 1.1.2.34 2004/06/23 17:09:13 rik Exp $
23 */
24
25#include <sys/cdefs.h>
26__FBSDID("$FreeBSD: head/sys/dev/cx/if_cx.c 138640 2004-12-09 23:43:03Z rik $");
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/proc.h>
34#include <sys/mbuf.h>
35#include <sys/sockio.h>
36#include <sys/malloc.h>
37#include <sys/socket.h>
38#include <sys/conf.h>
39#include <sys/errno.h>
40#include <sys/serial.h>
41#include <sys/tty.h>
42#include <sys/bus.h>
43#include <machine/bus.h>
44#include <sys/rman.h>
45#include <isa/isavar.h>
46#include <sys/fcntl.h>
47#include <sys/interrupt.h>
48#include <vm/vm.h>
49#include <vm/pmap.h>
50#include <net/if.h>
51#include <machine/cpufunc.h>
52#include <machine/cserial.h>
53#include <machine/clock.h>
54#include <machine/resource.h>
55#include <dev/cx/machdep.h>
56#include <dev/cx/cxddk.h>
57#include <dev/cx/cronyxfw.h>
58#include "opt_ng_cronyx.h"
59#ifdef NETGRAPH_CRONYX
60#   include "opt_netgraph.h"
61#   include <netgraph/ng_message.h>
62#   include <netgraph/netgraph.h>
63#   include <dev/cx/ng_cx.h>
64#else
65#   include <net/if_types.h>
66#   include <net/if_sppp.h>
67#   define PP_CISCO IFF_LINK2
68#   include <net/bpf.h>
69#endif
70
71#define NCX	1
72
73/* If we don't have Cronyx's sppp version, we don't have fr support via sppp */
74#ifndef PP_FR
75#define PP_FR 0
76#endif
77
78#define CX_DEBUG(d,s)	({if (d->chan->debug) {\
79				printf ("%s: ", d->name); printf s;}})
80#define CX_DEBUG2(d,s)	({if (d->chan->debug>1) {\
81				printf ("%s: ", d->name); printf s;}})
82
83typedef struct _async_q {
84	int beg;
85	int end;
86	#define BF_SZ 14400
87	int buf[BF_SZ+1];
88} async_q;
89
90#define AQ_GSZ(q)	((BF_SZ + (q)->end - (q)->beg)%BF_SZ)
91#define AQ_PUSH(q,c)	{*((q)->buf + (q)->end) = c;\
92			(q)->end = ((q)->end + 1)%BF_SZ;}
93#define AQ_POP(q,c)	{c = *((q)->buf + (q)->beg);\
94			(q)->beg = ((q)->beg + 1)%BF_SZ;}
95
96static void cx_identify		__P((driver_t *, device_t));
97static int cx_probe		__P((device_t));
98static int cx_attach		__P((device_t));
99static int cx_detach		__P((device_t));
100static t_open_t			cx_topen;
101static t_modem_t		cx_tmodem;
102static t_close_t		cx_tclose;
103
104static device_method_t cx_isa_methods [] = {
105	DEVMETHOD(device_identify,	cx_identify),
106	DEVMETHOD(device_probe,		cx_probe),
107	DEVMETHOD(device_attach,	cx_attach),
108	DEVMETHOD(device_detach,	cx_detach),
109	{0, 0}
110};
111
112typedef struct _cx_dma_mem_t {
113	unsigned long	phys;
114	void		*virt;
115	size_t		size;
116	bus_dma_tag_t	dmat;
117	bus_dmamap_t	mapp;
118} cx_dma_mem_t;
119
120typedef struct _drv_t {
121	char name [8];
122	cx_chan_t *chan;
123	cx_board_t *board;
124	cx_dma_mem_t dmamem;
125	struct tty *tty;
126	struct callout_handle dcd_timeout_handle;
127	unsigned callout;
128	unsigned lock;
129	int open_dev;
130	int cd;
131	int running;
132#ifdef NETGRAPH
133	char	nodename [NG_NODELEN+1];
134	hook_p	hook;
135	hook_p	debug_hook;
136	node_p	node;
137	struct	ifqueue lo_queue;
138	struct	ifqueue hi_queue;
139	short	timeout;
140	struct	callout_handle timeout_handle;
141#else
142	struct sppp pp;
143#endif
144	struct cdev *devt;
145	async_q aqueue;
146#define CX_READ 1
147#define CX_WRITE 2
148	int intr_action;
149	short atimeout;
150} drv_t;
151
152typedef struct _bdrv_t {
153	cx_board_t	*board;
154	struct resource	*base_res;
155	struct resource	*drq_res;
156	struct resource	*irq_res;
157	int		base_rid;
158	int		drq_rid;
159	int		irq_rid;
160	void		*intrhand;
161	drv_t		channel [NCHAN];
162} bdrv_t;
163
164static driver_t cx_isa_driver = {
165	"cx",
166	cx_isa_methods,
167	sizeof (bdrv_t),
168};
169
170static devclass_t cx_devclass;
171
172extern long csigma_fw_len;
173extern const char *csigma_fw_version;
174extern const char *csigma_fw_date;
175extern const char *csigma_fw_copyright;
176extern const cr_dat_tst_t csigma_fw_tvec[];
177extern const u_char csigma_fw_data[];
178static void cx_oproc (struct tty *tp);
179static int cx_param (struct tty *tp, struct termios *t);
180static void cx_stop (struct tty *tp, int flag);
181static void cx_receive (cx_chan_t *c, char *data, int len);
182static void cx_transmit (cx_chan_t *c, void *attachment, int len);
183static void cx_error (cx_chan_t *c, int data);
184static void cx_modem (cx_chan_t *c);
185static void cx_up (drv_t *d);
186static void cx_start (drv_t *d);
187static void cx_softintr (void *);
188static void *cx_fast_ih;
189static void cx_down (drv_t *d);
190static void cx_watchdog (drv_t *d);
191static void cx_carrier (void *arg);
192
193#ifdef NETGRAPH
194extern struct ng_type typestruct;
195#else
196static void cx_ifstart (struct ifnet *ifp);
197static void cx_tlf (struct sppp *sp);
198static void cx_tls (struct sppp *sp);
199static void cx_ifwatchdog (struct ifnet *ifp);
200static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data);
201static void cx_initialize (void *softc);
202#endif
203
204static cx_board_t *adapter [NCX];
205static drv_t *channel [NCX*NCHAN];
206static struct callout_handle led_timo [NCX];
207static struct callout_handle timeout_handle;
208extern struct cdevsw cx_cdevsw;
209
210static int MY_SOFT_INTR;
211
212/*
213 * Print the mbuf chain, for debug purposes only.
214 */
215static void printmbuf (struct mbuf *m)
216{
217	printf ("mbuf:");
218	for (; m; m=m->m_next) {
219		if (m->m_flags & M_PKTHDR)
220			printf (" HDR %d:", m->m_pkthdr.len);
221		if (m->m_flags & M_EXT)
222			printf (" EXT:");
223		printf (" %d", m->m_len);
224	}
225	printf ("\n");
226}
227
228/*
229 * Make an mbuf from data.
230 */
231static struct mbuf *makembuf (void *buf, u_int len)
232{
233	struct mbuf *m, *o, *p;
234
235	MGETHDR (m, M_DONTWAIT, MT_DATA);
236
237	if (! m)
238		return 0;
239
240	if (len >= MINCLSIZE)
241		MCLGET (m, M_DONTWAIT);
242
243	m->m_pkthdr.len = len;
244	m->m_len = 0;
245
246	p = m;
247	while (len) {
248		u_int n = M_TRAILINGSPACE (p);
249		if (n > len)
250			n = len;
251		if (! n) {
252			/* Allocate new mbuf. */
253			o = p;
254			MGET (p, M_DONTWAIT, MT_DATA);
255			if (! p) {
256				m_freem (m);
257				return 0;
258			}
259			if (len >= MINCLSIZE)
260				MCLGET (p, M_DONTWAIT);
261			p->m_len = 0;
262			o->m_next = p;
263
264			n = M_TRAILINGSPACE (p);
265			if (n > len)
266				n = len;
267		}
268		bcopy (buf, mtod (p, caddr_t) + p->m_len, n);
269
270		p->m_len += n;
271		buf = n + (char*) buf;
272		len -= n;
273	}
274	return m;
275}
276
277/*
278 * Recover after lost transmit interrupts.
279 */
280static void cx_timeout (void *arg)
281{
282	drv_t *d;
283	int s, i;
284
285	for (i=0; i<NCX*NCHAN; ++i) {
286		d = channel[i];
287		if (! d)
288			continue;
289		s = splhigh ();
290		if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) {
291			d->tty->t_state &= ~TS_BUSY;
292			if (d->tty->t_dev) {
293				d->intr_action |= CX_WRITE;
294				MY_SOFT_INTR = 1;
295				swi_sched (cx_fast_ih, 0);
296			}
297			CX_DEBUG (d, ("cx_timeout\n"));
298		}
299		if (d->atimeout)
300			d->atimeout--;
301		splx (s);
302	}
303	timeout_handle = timeout (cx_timeout, 0, hz*5);
304}
305
306static void cx_led_off (void *arg)
307{
308	cx_board_t *b = arg;
309	int s = splhigh ();
310
311	cx_led (b, 0);
312	led_timo[b->num].callout = 0;
313	splx (s);
314}
315
316/*
317 * Activate interupt handler from DDK.
318 */
319static void cx_intr (void *arg)
320{
321	bdrv_t *bd = arg;
322	cx_board_t *b = bd->board;
323	int s = splhigh ();
324
325	/* Turn LED on. */
326	cx_led (b, 1);
327
328	cx_int_handler (b);
329
330	/* Turn LED off 50 msec later. */
331	if (! led_timo[b->num].callout)
332		led_timo[b->num] = timeout (cx_led_off, b, hz/20);
333	splx (s);
334}
335
336static int probe_irq (cx_board_t *b, int irq)
337{
338	int mask, busy, cnt;
339
340	/* Clear pending irq, if any. */
341	cx_probe_irq (b, -irq);
342	DELAY (100);
343	for (cnt=0; cnt<5; ++cnt) {
344		/* Get the mask of pending irqs, assuming they are busy.
345		 * Activate the adapter on given irq. */
346		busy = cx_probe_irq (b, irq);
347		DELAY (100);
348
349		/* Get the mask of active irqs.
350		 * Deactivate our irq. */
351		mask = cx_probe_irq (b, -irq);
352		DELAY (100);
353		if ((mask & ~busy) == 1 << irq) {
354			cx_probe_irq (b, 0);
355			/* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n",
356				b->num, irq, mask, busy); */
357			return 1;
358		}
359	}
360	/* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n",
361		b->num, irq, mask, busy); */
362	cx_probe_irq (b, 0);
363	return 0;
364}
365
366static short porttab [] = {
367	0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
368	0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
369};
370static char dmatab [] = { 7, 6, 5, 0 };
371static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 };
372
373static int cx_is_free_res (device_t dev, int rid, int type, u_long start,
374	u_long end, u_long count)
375{
376	struct resource *res;
377
378	if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count,
379	    RF_ALLOCATED)))
380		return 0;
381
382	bus_release_resource (dev, type, rid, res);
383
384	return 1;
385}
386
387static void cx_identify (driver_t *driver, device_t dev)
388{
389	u_long iobase, rescount;
390	int devcount;
391	device_t *devices;
392	device_t child;
393	devclass_t my_devclass;
394	int i, k;
395
396	if ((my_devclass = devclass_find ("cx")) == NULL)
397		return;
398
399	devclass_get_devices (my_devclass, &devices, &devcount);
400
401	if (devcount == 0) {
402		/* We should find all devices by our self. We could alter other
403		 * devices, but we don't have a choise
404		 */
405		for (i = 0; (iobase = porttab [i]) != 0; i++) {
406			if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
407			    iobase, iobase + NPORT, NPORT))
408				continue;
409			if (cx_probe_board (iobase, -1, -1) == 0)
410				continue;
411
412			devcount++;
413
414			child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx",
415			    -1);
416
417			if (child == NULL)
418				return;
419
420			device_set_desc_copy (child, "Cronyx Sigma");
421			device_set_driver (child, driver);
422			bus_set_resource (child, SYS_RES_IOPORT, 0,
423			    iobase, NPORT);
424
425			if (devcount >= NCX)
426				break;
427		}
428	} else {
429		static short porttab [] = {
430			0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
431			0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
432		};
433		/* Lets check user choise.
434		 */
435		for (k = 0; k < devcount; k++) {
436			if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
437			    &iobase, &rescount) != 0)
438				continue;
439
440			for (i = 0; porttab [i] != 0; i++) {
441				if (porttab [i] != iobase)
442					continue;
443				if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
444				    iobase, iobase + NPORT, NPORT))
445					continue;
446				if (cx_probe_board (iobase, -1, -1) == 0)
447					continue;
448				porttab [i] = -1;
449				device_set_desc_copy (devices[k], "Cronyx Sigma");
450				break;
451			}
452
453			if (porttab [i] == 0) {
454				device_delete_child (
455				    device_get_parent (devices[k]),
456				    devices [k]);
457				devices[k] = 0;
458				continue;
459			}
460		}
461		for (k = 0; k < devcount; k++) {
462			if (devices[k] == 0)
463				continue;
464			if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
465			    &iobase, &rescount) == 0)
466				continue;
467			for (i = 0; (iobase = porttab [i]) != 0; i++) {
468				if (porttab [i] == -1) {
469					continue;
470				}
471				if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
472				    iobase, iobase + NPORT, NPORT))
473					continue;
474				if (cx_probe_board (iobase, -1, -1) == 0)
475					continue;
476
477				bus_set_resource (devices[k], SYS_RES_IOPORT, 0,
478				    iobase, NPORT);
479				porttab [i] = -1;
480				device_set_desc_copy (devices[k], "Cronyx Sigma");
481				break;
482			}
483			if (porttab [i] == 0) {
484				device_delete_child (
485				    device_get_parent (devices[k]),
486				    devices [k]);
487			}
488		}
489		free (devices, M_TEMP);
490	}
491
492	return;
493}
494
495static int cx_probe (device_t dev)
496{
497	int unit = device_get_unit (dev);
498	int i;
499	u_long iobase, rescount;
500
501	if (!device_get_desc (dev) ||
502	    strcmp (device_get_desc (dev), "Cronyx Sigma"))
503		return ENXIO;
504
505	if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) {
506		printf ("cx%d: Couldn't get IOPORT\n", unit);
507		return ENXIO;
508	}
509
510	if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
511	    iobase, iobase + NPORT, NPORT)) {
512		printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase);
513		return ENXIO;
514	}
515
516	for (i = 0; porttab [i] != 0; i++) {
517		if (porttab [i] == iobase) {
518			porttab [i] = -1;
519			break;
520		}
521	}
522
523	if (porttab [i] == 0) {
524		return ENXIO;
525	}
526
527	if (!cx_probe_board (iobase, -1, -1)) {
528		printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase);
529		return ENXIO;
530	}
531
532	return 0;
533}
534
535static void
536cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error)
537{
538	unsigned long *addr;
539
540	if (error)
541		return;
542
543	KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
544	addr = arg;
545	*addr = segs->ds_addr;
546}
547
548static int
549cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem)
550{
551	int error;
552
553	error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT,
554		BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1,
555		dmem->size, 0, NULL, NULL, &dmem->dmat);
556	if (error) {
557		if (cnum >= 0)	printf ("cx%d-%d: ", bnum, cnum);
558		else		printf ("cx%d: ", bnum);
559		printf ("couldn't allocate tag for dma memory\n");
560 		return 0;
561	}
562	error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt,
563		BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp);
564	if (error) {
565		if (cnum >= 0)	printf ("cx%d-%d: ", bnum, cnum);
566		else		printf ("cx%d: ", bnum);
567		printf ("couldn't allocate mem for dma memory\n");
568		bus_dma_tag_destroy (dmem->dmat);
569 		return 0;
570	}
571	error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt,
572		dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0);
573	if (error) {
574		if (cnum >= 0)	printf ("cx%d-%d: ", bnum, cnum);
575		else		printf ("cx%d: ", bnum);
576		printf ("couldn't load mem map for dma memory\n");
577		bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
578		bus_dma_tag_destroy (dmem->dmat);
579 		return 0;
580	}
581	return 1;
582}
583
584static void
585cx_bus_dma_mem_free (cx_dma_mem_t *dmem)
586{
587	bus_dmamap_unload (dmem->dmat, dmem->mapp);
588	bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
589	bus_dma_tag_destroy (dmem->dmat);
590}
591
592/*
593 * The adapter is present, initialize the driver structures.
594 */
595static int cx_attach (device_t dev)
596{
597	bdrv_t *bd = device_get_softc (dev);
598	u_long iobase, drq, irq, rescount;
599	int unit = device_get_unit (dev);
600	cx_board_t *b;
601	cx_chan_t *c;
602	drv_t *d;
603	int i;
604	int s;
605
606	KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit));
607
608	bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount);
609	bd->base_rid = 0;
610	bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid,
611		iobase, iobase + NPORT, NPORT, RF_ACTIVE);
612	if (! bd->base_res) {
613		printf ("cx%d: cannot allocate base address\n", unit);
614		return ENXIO;
615	}
616
617	if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) {
618		for (i = 0; (drq = dmatab [i]) != 0; i++) {
619			if (!cx_is_free_res (dev, 0, SYS_RES_DRQ,
620			    drq, drq + 1, 1))
621				continue;
622			bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1);
623			break;
624		}
625
626		if (dmatab[i] == 0) {
627			bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
628				bd->base_res);
629			printf ("cx%d: Couldn't get DRQ\n", unit);
630			return ENXIO;
631		}
632	}
633
634	bd->drq_rid = 0;
635	bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid,
636		drq, drq + 1, 1, RF_ACTIVE);
637	if (! bd->drq_res) {
638		printf ("cx%d: cannot allocate drq\n", unit);
639		bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
640			bd->base_res);
641		return ENXIO;
642	}
643
644	if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) {
645		for (i = 0; (irq = irqtab [i]) != 0; i++) {
646			if (!cx_is_free_res (dev, 0, SYS_RES_IRQ,
647			    irq, irq + 1, 1))
648				continue;
649			bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1);
650			break;
651		}
652
653		if (irqtab[i] == 0) {
654			bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
655				bd->drq_res);
656			bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
657				bd->base_res);
658			printf ("cx%d: Couldn't get IRQ\n", unit);
659			return ENXIO;
660		}
661	}
662
663	bd->irq_rid = 0;
664	bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid,
665		irq, irq + 1, 1, RF_ACTIVE);
666	if (! bd->irq_res) {
667		printf ("cx%d: Couldn't allocate irq\n", unit);
668		bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
669			bd->drq_res);
670		bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
671			bd->base_res);
672		return ENXIO;
673	}
674
675	b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK);
676	if (!b) {
677		printf ("cx:%d: Couldn't allocate memory\n", unit);
678		return (ENXIO);
679	}
680	adapter[unit] = b;
681	bzero (b, sizeof(cx_board_t));
682
683	if (! cx_open_board (b, unit, iobase, irq, drq)) {
684		printf ("cx%d: error loading firmware\n", unit);
685		free (b, M_DEVBUF);
686		bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
687			bd->irq_res);
688		bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
689			bd->drq_res);
690		bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
691			bd->base_res);
692 		return ENXIO;
693	}
694
695	bd->board = b;
696
697	if (! probe_irq (b, irq)) {
698		printf ("cx%d: irq %ld not functional\n", unit, irq);
699		bd->board = 0;
700		adapter [unit] = 0;
701		free (b, M_DEVBUF);
702		bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
703			bd->irq_res);
704		bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
705			bd->drq_res);
706		bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
707			bd->base_res);
708 		return ENXIO;
709	}
710
711	s = splhigh ();
712	if (bus_setup_intr (dev, bd->irq_res, INTR_TYPE_NET, cx_intr, bd,
713	    &bd->intrhand)) {
714		printf ("cx%d: Can't setup irq %ld\n", unit, irq);
715		bd->board = 0;
716		adapter [unit] = 0;
717		free (b, M_DEVBUF);
718		bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
719			bd->irq_res);
720		bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
721			bd->drq_res);
722		bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
723			bd->base_res);
724		splx (s);
725 		return ENXIO;
726	}
727
728	cx_init (b, b->num, b->port, irq, drq);
729	cx_setup_board (b, 0, 0, 0);
730
731	printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name);
732
733	for (c=b->chan; c<b->chan+NCHAN; ++c) {
734		if (c->type == T_NONE)
735			continue;
736		d = &bd->channel[c->num];
737		d->dmamem.size = sizeof(cx_buf_t);
738		if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem))
739			continue;
740		channel [b->num*NCHAN + c->num] = d;
741		sprintf (d->name, "cx%d.%d", b->num, c->num);
742		d->board = b;
743		d->chan = c;
744		d->open_dev = 0;
745		c->sys = d;
746
747		switch (c->type) {
748		case T_SYNC_RS232:
749		case T_SYNC_V35:
750		case T_SYNC_RS449:
751		case T_UNIV:
752		case T_UNIV_RS232:
753		case T_UNIV_RS449:
754		case T_UNIV_V35:
755#ifdef NETGRAPH
756		if (ng_make_node_common (&typestruct, &d->node) != 0) {
757			printf ("%s: cannot make common node\n", d->name);
758			channel [b->num*NCHAN + c->num] = 0;
759			c->sys = 0;
760			cx_bus_dma_mem_free (&d->dmamem);
761			continue;
762		}
763		NG_NODE_SET_PRIVATE (d->node, d);
764		sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE,
765			 c->board->num*NCHAN + c->num);
766		if (ng_name_node (d->node, d->nodename)) {
767			printf ("%s: cannot name node\n", d->nodename);
768			NG_NODE_UNREF (d->node);
769			channel [b->num*NCHAN + c->num] = 0;
770			c->sys = 0;
771			cx_bus_dma_mem_free (&d->dmamem);
772			continue;
773		}
774		d->lo_queue.ifq_maxlen = IFQ_MAXLEN;
775		d->hi_queue.ifq_maxlen = IFQ_MAXLEN;
776		mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF);
777		mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF);
778#else /*NETGRAPH*/
779		d->pp.pp_if.if_softc    = d;
780		if_initname (&d->pp.pp_if, "cx", b->num * NCHAN + c->num);
781		d->pp.pp_if.if_mtu	= PP_MTU;
782		d->pp.pp_if.if_flags	= IFF_POINTOPOINT | IFF_MULTICAST |
783					  IFF_NEEDSGIANT;
784		d->pp.pp_if.if_ioctl	= cx_sioctl;
785		d->pp.pp_if.if_start	= cx_ifstart;
786		d->pp.pp_if.if_watchdog	= cx_ifwatchdog;
787		d->pp.pp_if.if_init	= cx_initialize;
788		sppp_attach (&d->pp.pp_if);
789		if_attach (&d->pp.pp_if);
790		d->pp.pp_tlf		= cx_tlf;
791		d->pp.pp_tls		= cx_tls;
792		/* If BPF is in the kernel, call the attach for it.
793		 * Size of PPP header is 4 bytes. */
794		bpfattach (&d->pp.pp_if, DLT_PPP, 4);
795#endif /*NETGRAPH*/
796		}
797		d->tty = ttyalloc ();
798		d->tty->t_open = cx_topen;
799		d->tty->t_close = cx_tclose;
800		d->tty->t_param = cx_param;
801		d->tty->t_stop  = cx_stop;
802		d->tty->t_modem  = cx_tmodem;
803		d->tty->t_sc = d;
804		cx_start_chan (c, d->dmamem.virt, d->dmamem.phys);
805		cx_register_receive (c, &cx_receive);
806		cx_register_transmit (c, &cx_transmit);
807		cx_register_error (c, &cx_error);
808		cx_register_modem (c, &cx_modem);
809
810		ttycreate(d->tty, NULL, 0, MINOR_CALLOUT,
811		    "x%r%r", b->num, c->num);
812		d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num);
813		d->devt->si_drv1 = d;
814	}
815	splx (s);
816
817	return 0;
818}
819
820static int cx_detach (device_t dev)
821{
822	bdrv_t *bd = device_get_softc (dev);
823	cx_board_t *b = bd->board;
824	cx_chan_t *c;
825	int s = splhigh ();
826
827	/* Check if the device is busy (open). */
828	for (c = b->chan; c < b->chan + NCHAN; ++c) {
829		drv_t *d = (drv_t*) c->sys;
830
831		if (!d || d->chan->type == T_NONE)
832			continue;
833		if (d->lock) {
834			splx (s);
835			return EBUSY;
836		}
837		if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
838		    (d->open_dev|0x2)) {
839			splx (s);
840			return EBUSY;
841		}
842		if (d->running) {
843			splx (s);
844			return EBUSY;
845		}
846	}
847
848	/* Deactivate the timeout routine. And soft interrupt*/
849	if (led_timo[b->num].callout)
850		untimeout (cx_led_off, b, led_timo[b->num]);
851
852	for (c = b->chan; c < b->chan + NCHAN; ++c) {
853		drv_t *d = c->sys;
854
855		if (!d || d->chan->type == T_NONE)
856			continue;
857
858		if (d->dcd_timeout_handle.callout)
859			untimeout (cx_carrier, c, d->dcd_timeout_handle);
860	}
861	bus_teardown_intr (dev, bd->irq_res, bd->intrhand);
862	bus_deactivate_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res);
863	bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res);
864
865	bus_deactivate_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res);
866	bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res);
867
868	bus_deactivate_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->irq_res);
869	bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res);
870
871	cx_close_board (b);
872
873	/* Detach the interfaces, free buffer memory. */
874	for (c = b->chan; c < b->chan + NCHAN; ++c) {
875		drv_t *d = (drv_t*) c->sys;
876
877		if (!d || d->chan->type == T_NONE)
878			continue;
879
880		if (d->tty) {
881			ttyfree (d->tty);
882			d->tty = NULL;
883		}
884
885#ifdef NETGRAPH
886		if (d->node) {
887			ng_rmnode_self (d->node);
888			NG_NODE_UNREF (d->node);
889			d->node = NULL;
890		}
891		mtx_destroy (&d->lo_queue.ifq_mtx);
892		mtx_destroy (&d->hi_queue.ifq_mtx);
893#else
894		/* Detach from the packet filter list of interfaces. */
895		bpfdetach (&d->pp.pp_if);
896		/* Detach from the sync PPP list. */
897		sppp_detach (&d->pp.pp_if);
898
899		if_detach (&d->pp.pp_if);
900#endif
901		destroy_dev (d->devt);
902	}
903
904	cx_led_off (b);
905	if (led_timo[b->num].callout)
906		untimeout (cx_led_off, b, led_timo[b->num]);
907	splx (s);
908
909	s = splhigh ();
910	for (c = b->chan; c < b->chan + NCHAN; ++c) {
911		drv_t *d = (drv_t*) c->sys;
912
913		if (!d || d->chan->type == T_NONE)
914			continue;
915
916		/* Deallocate buffers. */
917		cx_bus_dma_mem_free (&d->dmamem);
918	}
919	bd->board = 0;
920	adapter [b->num] = 0;
921	free (b, M_DEVBUF);
922	splx (s);
923
924	return 0;
925}
926
927#ifndef NETGRAPH
928static void cx_ifstart (struct ifnet *ifp)
929{
930	drv_t *d = ifp->if_softc;
931
932	cx_start (d);
933}
934
935static void cx_ifwatchdog (struct ifnet *ifp)
936{
937	drv_t *d = ifp->if_softc;
938
939	cx_watchdog (d);
940}
941
942static void cx_tlf (struct sppp *sp)
943{
944	drv_t *d = sp->pp_if.if_softc;
945
946	CX_DEBUG (d, ("cx_tlf\n"));
947/*	cx_set_dtr (d->chan, 0);*/
948/*	cx_set_rts (d->chan, 0);*/
949	if (!(d->pp.pp_flags & PP_FR) && !(d->pp.pp_if.if_flags & PP_CISCO))
950		sp->pp_down (sp);
951}
952
953static void cx_tls (struct sppp *sp)
954{
955	drv_t *d = sp->pp_if.if_softc;
956
957	CX_DEBUG (d, ("cx_tls\n"));
958	if (!(d->pp.pp_flags & PP_FR) && !(d->pp.pp_if.if_flags & PP_CISCO))
959		sp->pp_up (sp);
960}
961
962/*
963 * Initialization of interface.
964 * It seems to be never called by upper level.
965 */
966static void cx_initialize (void *softc)
967{
968	drv_t *d = softc;
969
970	CX_DEBUG (d, ("cx_initialize\n"));
971}
972
973/*
974 * Process an ioctl request.
975 */
976static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data)
977{
978	drv_t *d = ifp->if_softc;
979	int error, s, was_up, should_be_up;
980
981	/* No socket ioctls while the channel is in async mode. */
982	if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC)
983		return EBUSY;
984
985	/* Socket ioctls on slave subchannels are not allowed. */
986	was_up = (ifp->if_flags & IFF_RUNNING) != 0;
987	error = sppp_ioctl (ifp, cmd, data);
988	if (error)
989		return error;
990
991	if (! (ifp->if_flags & IFF_DEBUG))
992		d->chan->debug = 0;
993	else if (! d->chan->debug)
994		d->chan->debug = 1;
995
996	switch (cmd) {
997	default:	   CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0;
998	case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n"));     return 0;
999	case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n"));     return 0;
1000	case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n"));     break;
1001	case SIOCSIFADDR:  CX_DEBUG2 (d, ("SIOCSIFADDR\n"));      break;
1002	}
1003
1004	/* We get here only in case of SIFFLAGS or SIFADDR. */
1005	s = splhigh ();
1006	should_be_up = (ifp->if_flags & IFF_RUNNING) != 0;
1007	if (!was_up && should_be_up) {
1008		/* Interface goes up -- start it. */
1009		cx_up (d);
1010		cx_start (d);
1011	} else if (was_up && !should_be_up) {
1012		/* Interface is going down -- stop it. */
1013		/* if ((d->pp.pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/
1014		cx_down (d);
1015	}
1016	splx (s);
1017	return 0;
1018}
1019#endif /*NETGRAPH*/
1020
1021/*
1022 * Stop the interface.  Called on splimp().
1023 */
1024static void cx_down (drv_t *d)
1025{
1026	int s = splhigh ();
1027	CX_DEBUG (d, ("cx_down\n"));
1028	cx_set_dtr (d->chan, 0);
1029	cx_set_rts (d->chan, 0);
1030	d->running = 0;
1031	splx (s);
1032}
1033
1034/*
1035 * Start the interface.  Called on splimp().
1036 */
1037static void cx_up (drv_t *d)
1038{
1039	int s = splhigh ();
1040	CX_DEBUG (d, ("cx_up\n"));
1041	cx_set_dtr (d->chan, 1);
1042	cx_set_rts (d->chan, 1);
1043	d->running = 1;
1044	splx (s);
1045}
1046
1047/*
1048 * Start output on the (slave) interface.  Get another datagram to send
1049 * off of the interface queue, and copy it to the interface
1050 * before starting the output.
1051 */
1052static void cx_send (drv_t *d)
1053{
1054	struct mbuf *m;
1055	u_short len;
1056
1057	CX_DEBUG2 (d, ("cx_send\n"));
1058
1059	/* No output if the interface is down. */
1060	if (! d->running)
1061		return;
1062
1063	/* No output if the modem is off. */
1064	if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan))
1065		return;
1066
1067	if (cx_buf_free (d->chan)) {
1068		/* Get the packet to send. */
1069#ifdef NETGRAPH
1070		IF_DEQUEUE (&d->hi_queue, m);
1071		if (! m)
1072			IF_DEQUEUE (&d->lo_queue, m);
1073#else
1074		m = sppp_dequeue (&d->pp.pp_if);
1075#endif
1076		if (! m)
1077			return;
1078#ifndef NETGRAPH
1079		if (d->pp.pp_if.if_bpf)
1080			BPF_MTAP (&d->pp.pp_if, m);
1081#endif
1082		len = m->m_pkthdr.len;
1083		if (! m->m_next)
1084			cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t),
1085				len, 0);
1086		else {
1087			u_char buf [DMABUFSZ];
1088			m_copydata (m, 0, len, buf);
1089			cx_send_packet (d->chan, buf, len, 0);
1090		}
1091		m_freem (m);
1092
1093		/* Set up transmit timeout, 10 seconds. */
1094#ifdef NETGRAPH
1095		d->timeout = 10;
1096#else
1097		d->pp.pp_if.if_timer = 10;
1098#endif
1099	}
1100#ifndef NETGRAPH
1101	d->pp.pp_if.if_flags |= IFF_OACTIVE;
1102#endif
1103}
1104
1105/*
1106 * Start output on the interface.
1107 * Always called on splimp().
1108 */
1109static void cx_start (drv_t *d)
1110{
1111	int s = splhigh ();
1112	if (d->running) {
1113		if (! d->chan->dtr)
1114			cx_set_dtr (d->chan, 1);
1115		if (! d->chan->rts)
1116			cx_set_rts (d->chan, 1);
1117		cx_send (d);
1118	}
1119	splx (s);
1120}
1121
1122/*
1123 * Handle transmit timeouts.
1124 * Recover after lost transmit interrupts.
1125 * Always called on splimp().
1126 */
1127static void cx_watchdog (drv_t *d)
1128{
1129	int s = splhigh ();
1130	CX_DEBUG (d, ("device timeout\n"));
1131	if (d->running) {
1132		cx_setup_chan (d->chan);
1133		cx_start_chan (d->chan, 0, 0);
1134		cx_set_dtr (d->chan, 1);
1135		cx_set_rts (d->chan, 1);
1136		cx_start (d);
1137	}
1138	splx (s);
1139}
1140
1141/*
1142 * Transmit callback function.
1143 */
1144static void cx_transmit (cx_chan_t *c, void *attachment, int len)
1145{
1146	drv_t *d = c->sys;
1147
1148	if (!d)
1149		return;
1150
1151	if (c->mode == M_ASYNC && d->tty) {
1152		d->tty->t_state &= ~(TS_BUSY | TS_FLUSH);
1153		d->atimeout = 0;
1154		if (d->tty->t_dev) {
1155			d->intr_action |= CX_WRITE;
1156			MY_SOFT_INTR = 1;
1157			swi_sched (cx_fast_ih, 0);
1158		}
1159		return;
1160	}
1161#ifdef NETGRAPH
1162	d->timeout = 0;
1163#else
1164	++d->pp.pp_if.if_opackets;
1165	d->pp.pp_if.if_flags &= ~IFF_OACTIVE;
1166	d->pp.pp_if.if_timer = 0;
1167#endif
1168	cx_start (d);
1169}
1170
1171/*
1172 * Process the received packet.
1173 */
1174static void cx_receive (cx_chan_t *c, char *data, int len)
1175{
1176	drv_t *d = c->sys;
1177	struct mbuf *m;
1178	char *cc = data;
1179#if defined NETGRAPH
1180	int error;
1181#endif
1182
1183	if (!d)
1184		return;
1185
1186	if (c->mode == M_ASYNC && d->tty) {
1187		if (d->tty->t_state & TS_ISOPEN) {
1188			async_q *q = &d->aqueue;
1189			int size = BF_SZ - 1 - AQ_GSZ (q);
1190
1191			if (len <= 0 && !size)
1192				return;
1193
1194			if (len > size) {
1195				c->ierrs++;
1196				cx_error (c, CX_OVERRUN);
1197				len = size - 1;
1198			}
1199
1200			while (len--) {
1201				AQ_PUSH (q, *(unsigned char *)cc);
1202				cc++;
1203			}
1204
1205			d->intr_action |= CX_READ;
1206			MY_SOFT_INTR = 1;
1207			swi_sched (cx_fast_ih, 0);
1208		}
1209		return;
1210	}
1211	if (! d->running)
1212		return;
1213
1214	m = makembuf (data, len);
1215	if (! m) {
1216		CX_DEBUG (d, ("no memory for packet\n"));
1217#ifndef NETGRAPH
1218		++d->pp.pp_if.if_iqdrops;
1219#endif
1220		return;
1221	}
1222	if (c->debug > 1)
1223		printmbuf (m);
1224#ifdef NETGRAPH
1225	m->m_pkthdr.rcvif = 0;
1226	NG_SEND_DATA_ONLY (error, d->hook, m);
1227#else
1228	++d->pp.pp_if.if_ipackets;
1229	m->m_pkthdr.rcvif = &d->pp.pp_if;
1230	/* Check if there's a BPF listener on this interface.
1231	 * If so, hand off the raw packet to bpf. */
1232	if (d->pp.pp_if.if_bpf)
1233		BPF_TAP (&d->pp.pp_if, data, len);
1234	sppp_input (&d->pp.pp_if, m);
1235#endif
1236}
1237
1238#define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\
1239	    && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\
1240	    && (!(tp->t_iflag & PARMRK)\
1241		|| (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\
1242	    && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\
1243	    && linesw[tp->t_line]->l_rint == ttyinput)
1244
1245/*
1246 * Error callback function.
1247 */
1248static void cx_error (cx_chan_t *c, int data)
1249{
1250	drv_t *d = c->sys;
1251	async_q *q;
1252
1253	if (!d)
1254		return;
1255
1256	q = &(d->aqueue);
1257
1258	switch (data) {
1259	case CX_FRAME:
1260		CX_DEBUG (d, ("frame error\n"));
1261		if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1262			&& (AQ_GSZ (q) < BF_SZ - 1)
1263			&& (!CONDITION((&d->tty->t_termios), (d->tty))
1264			|| !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1265			AQ_PUSH (q, TTY_FE);
1266			d->intr_action |= CX_READ;
1267			MY_SOFT_INTR = 1;
1268			swi_sched (cx_fast_ih, 0);
1269		}
1270#ifndef NETGRAPH
1271		else
1272			++d->pp.pp_if.if_ierrors;
1273#endif
1274		break;
1275	case CX_CRC:
1276		CX_DEBUG (d, ("crc error\n"));
1277		if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1278			&& (AQ_GSZ (q) < BF_SZ - 1)
1279			&& (!CONDITION((&d->tty->t_termios), (d->tty))
1280			|| !(d->tty->t_iflag & INPCK)
1281			|| !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1282			AQ_PUSH (q, TTY_PE);
1283			d->intr_action |= CX_READ;
1284			MY_SOFT_INTR = 1;
1285			swi_sched (cx_fast_ih, 0);
1286		}
1287#ifndef NETGRAPH
1288		else
1289			++d->pp.pp_if.if_ierrors;
1290#endif
1291		break;
1292	case CX_OVERRUN:
1293		CX_DEBUG (d, ("overrun error\n"));
1294#ifdef TTY_OE
1295		if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1296			&& (AQ_GSZ (q) < BF_SZ - 1)
1297			&& (!CONDITION((&d->tty->t_termios), (d->tty)))) {
1298			AQ_PUSH (q, TTY_OE);
1299			d->intr_action |= CX_READ;
1300			MY_SOFT_INTR = 1;
1301			swi_sched (cx_fast_ih, 0);
1302		}
1303#endif
1304#ifndef NETGRAPH
1305		else {
1306			++d->pp.pp_if.if_collisions;
1307			++d->pp.pp_if.if_ierrors;
1308		}
1309#endif
1310		break;
1311	case CX_OVERFLOW:
1312		CX_DEBUG (d, ("overflow error\n"));
1313#ifndef NETGRAPH
1314		if (c->mode != M_ASYNC)
1315			++d->pp.pp_if.if_ierrors;
1316#endif
1317		break;
1318	case CX_UNDERRUN:
1319		CX_DEBUG (d, ("underrun error\n"));
1320		if (c->mode != M_ASYNC) {
1321#ifdef NETGRAPH
1322			d->timeout = 0;
1323#else
1324			++d->pp.pp_if.if_oerrors;
1325			d->pp.pp_if.if_flags &= ~IFF_OACTIVE;
1326			d->pp.pp_if.if_timer = 0;
1327			cx_start (d);
1328#endif
1329		}
1330		break;
1331	case CX_BREAK:
1332		CX_DEBUG (d, ("break error\n"));
1333		if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1334			&& (AQ_GSZ (q) < BF_SZ - 1)
1335			&& (!CONDITION((&d->tty->t_termios), (d->tty))
1336			|| !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) {
1337			AQ_PUSH (q, TTY_BI);
1338			d->intr_action |= CX_READ;
1339			MY_SOFT_INTR = 1;
1340			swi_sched (cx_fast_ih, 0);
1341		}
1342#ifndef NETGRAPH
1343		else
1344			++d->pp.pp_if.if_ierrors;
1345#endif
1346		break;
1347	default:
1348		CX_DEBUG (d, ("error #%d\n", data));
1349	}
1350}
1351
1352static int cx_topen (struct tty *tp, struct cdev *dev)
1353{
1354	drv_t *d;
1355
1356	d = tp->t_sc;
1357	if (d->chan->mode != M_ASYNC)
1358		return (EBUSY);
1359	d->open_dev |= 0x2;
1360	cx_start_chan (d->chan, 0, 0);
1361	cx_set_dtr (d->chan, 1);
1362	cx_set_rts (d->chan, 1);
1363	d->cd = cx_get_cd (d->chan);
1364	return (0);
1365}
1366
1367static void cx_tclose (struct tty *tp)
1368{
1369	drv_t *d;
1370
1371	d = tp->t_sc;
1372	/* Disable receiver.
1373	 * Transmitter continues sending the queued data. */
1374	cx_enable_receive (d->chan, 0);
1375	d->open_dev &= ~0x2;
1376}
1377
1378static int cx_tmodem (struct tty *tp, int sigon, int sigoff)
1379{
1380	drv_t *d;
1381
1382	d = tp->t_sc;
1383
1384	if (!sigon && !sigoff) {
1385		if (cx_get_dsr (d->chan)) sigon |= SER_DSR;
1386		if (cx_get_cd  (d->chan)) sigon |= SER_DCD;
1387		if (cx_get_cts (d->chan)) sigon |= SER_CTS;
1388		if (d->chan->dtr)	  sigon |= SER_DTR;
1389		if (d->chan->rts)	  sigon |= SER_RTS;
1390		return sigon;
1391	}
1392
1393	if (sigon & SER_DTR)
1394		cx_set_dtr (d->chan, 1);
1395	if (sigoff & SER_DTR)
1396		cx_set_dtr (d->chan, 0);
1397	if (sigon & SER_RTS)
1398		cx_set_rts (d->chan, 1);
1399	if (sigoff & SER_RTS)
1400		cx_set_rts (d->chan, 0);
1401	return (0);
1402}
1403
1404static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td)
1405{
1406	int unit;
1407	drv_t *d;
1408
1409	d = dev->si_drv1;
1410	unit = d->chan->num;
1411	CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n",
1412		    unit, flag, mode));
1413
1414	d->open_dev |= 0x1;
1415	return 0;
1416}
1417
1418static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td)
1419{
1420	drv_t *d;
1421
1422	d = dev->si_drv1;
1423	CX_DEBUG2 (d, ("cx_close\n"));
1424	d->open_dev &= ~0x1;
1425	return 0;
1426}
1427
1428static int cx_modem_status (drv_t *d)
1429{
1430	int status = 0, s = splhigh ();
1431
1432	/* Already opened by someone or network interface is up? */
1433	if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1434	    (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running))
1435		status = TIOCM_LE;	/* always enabled while open */
1436
1437	if (cx_get_dsr (d->chan)) status |= TIOCM_DSR;
1438	if (cx_get_cd  (d->chan)) status |= TIOCM_CD;
1439	if (cx_get_cts (d->chan)) status |= TIOCM_CTS;
1440	if (d->chan->dtr)	  status |= TIOCM_DTR;
1441	if (d->chan->rts)	  status |= TIOCM_RTS;
1442
1443	splx (s);
1444	return status;
1445}
1446
1447static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1448{
1449	drv_t *d;
1450	cx_chan_t *c;
1451	struct serial_statistics *st;
1452	int error, s;
1453	char mask[16];
1454
1455	d = dev->si_drv1;
1456	c = d->chan;
1457
1458	switch (cmd) {
1459	case SERIAL_GETREGISTERED:
1460		CX_DEBUG2 (d, ("ioctl: getregistered\n"));
1461		bzero (mask, sizeof(mask));
1462		for (s=0; s<NCX*NCHAN; ++s)
1463			if (channel [s])
1464				mask [s/8] |= 1 << (s & 7);
1465		bcopy (mask, data, sizeof (mask));
1466		return 0;
1467
1468	case SERIAL_GETPORT:
1469		CX_DEBUG2 (d, ("ioctl: getport\n"));
1470		s = splhigh ();
1471		*(int *)data = cx_get_port (c);
1472		splx (s);
1473		if (*(int *)data<0)
1474			return (EINVAL);
1475		else
1476			return 0;
1477
1478	case SERIAL_SETPORT:
1479		CX_DEBUG2 (d, ("ioctl: setproto\n"));
1480		/* Only for superuser! */
1481		error = suser (td);
1482		if (error)
1483			return error;
1484
1485		s = splhigh ();
1486		cx_set_port (c, *(int *)data);
1487		splx (s);
1488		return 0;
1489
1490#ifndef NETGRAPH
1491	case SERIAL_GETPROTO:
1492		CX_DEBUG2 (d, ("ioctl: getproto\n"));
1493		s = splhigh ();
1494		strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" :
1495			(d->pp.pp_flags & PP_FR) ? "fr" :
1496			(d->pp.pp_if.if_flags & PP_CISCO) ? "cisco" : "ppp");
1497		splx (s);
1498		return 0;
1499
1500	case SERIAL_SETPROTO:
1501		CX_DEBUG2 (d, ("ioctl: setproto\n"));
1502		/* Only for superuser! */
1503		error = suser (td);
1504		if (error)
1505			return error;
1506		if (c->mode == M_ASYNC)
1507			return EBUSY;
1508		if (d->pp.pp_if.if_flags & IFF_RUNNING)
1509			return EBUSY;
1510		if (! strcmp ("cisco", (char*)data)) {
1511			d->pp.pp_flags &= ~(PP_FR);
1512			d->pp.pp_flags |= PP_KEEPALIVE;
1513			d->pp.pp_if.if_flags |= PP_CISCO;
1514		} else if (! strcmp ("fr", (char*)data)) {
1515			d->pp.pp_if.if_flags &= ~(PP_CISCO);
1516			d->pp.pp_flags |= PP_FR | PP_KEEPALIVE;
1517		} else if (! strcmp ("ppp", (char*)data)) {
1518			d->pp.pp_flags &= ~(PP_FR | PP_KEEPALIVE);
1519			d->pp.pp_if.if_flags &= ~(PP_CISCO);
1520		} else
1521			return EINVAL;
1522		return 0;
1523
1524	case SERIAL_GETKEEPALIVE:
1525		CX_DEBUG2 (d, ("ioctl: getkeepalive\n"));
1526		if ((d->pp.pp_flags & PP_FR) ||
1527		    (d->pp.pp_if.if_flags & PP_CISCO) ||
1528		    (c->mode == M_ASYNC))
1529			return EINVAL;
1530		s = splhigh ();
1531		*(int*)data = (d->pp.pp_flags & PP_KEEPALIVE) ? 1 : 0;
1532		splx (s);
1533		return 0;
1534
1535	case SERIAL_SETKEEPALIVE:
1536		CX_DEBUG2 (d, ("ioctl: setkeepalive\n"));
1537		/* Only for superuser! */
1538		error = suser (td);
1539		if (error)
1540			return error;
1541		if ((d->pp.pp_flags & PP_FR) ||
1542			(d->pp.pp_if.if_flags & PP_CISCO))
1543			return EINVAL;
1544		s = splhigh ();
1545		if (*(int*)data)
1546			d->pp.pp_flags |= PP_KEEPALIVE;
1547		else
1548			d->pp.pp_flags &= ~PP_KEEPALIVE;
1549		splx (s);
1550		return 0;
1551#endif /*NETGRAPH*/
1552
1553	case SERIAL_GETMODE:
1554		CX_DEBUG2 (d, ("ioctl: getmode\n"));
1555		s = splhigh ();
1556		*(int*)data = (c->mode == M_ASYNC) ?
1557			SERIAL_ASYNC : SERIAL_HDLC;
1558		splx (s);
1559		return 0;
1560
1561	case SERIAL_SETMODE:
1562		CX_DEBUG2 (d, ("ioctl: setmode\n"));
1563		/* Only for superuser! */
1564		error = suser (td);
1565		if (error)
1566			return error;
1567
1568		/* Somebody is waiting for carrier? */
1569		if (d->lock)
1570			return EBUSY;
1571		/* /dev/ttyXX is already opened by someone? */
1572		if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1573		    (d->open_dev|0x2))
1574			return EBUSY;
1575		/* Network interface is up?
1576		 * Cannot change to async mode. */
1577		if (c->mode != M_ASYNC && d->running &&
1578		    (*(int*)data == SERIAL_ASYNC))
1579			return EBUSY;
1580
1581		s = splhigh ();
1582		if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) {
1583			cx_set_mode (c, M_ASYNC);
1584			cx_enable_receive (c, 0);
1585			cx_enable_transmit (c, 0);
1586		} else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) {
1587			cx_set_mode (c, M_HDLC);
1588			cx_enable_receive (c, 1);
1589			cx_enable_transmit (c, 1);
1590		}
1591		splx (s);
1592		return 0;
1593
1594	case SERIAL_GETSTAT:
1595		CX_DEBUG2 (d, ("ioctl: getestat\n"));
1596		st = (struct serial_statistics*) data;
1597		s = splhigh ();
1598		st->rintr  = c->rintr;
1599		st->tintr  = c->tintr;
1600		st->mintr  = c->mintr;
1601		st->ibytes = c->ibytes;
1602		st->ipkts  = c->ipkts;
1603		st->ierrs  = c->ierrs;
1604		st->obytes = c->obytes;
1605		st->opkts  = c->opkts;
1606		st->oerrs  = c->oerrs;
1607		splx (s);
1608		return 0;
1609
1610	case SERIAL_CLRSTAT:
1611		CX_DEBUG2 (d, ("ioctl: clrstat\n"));
1612		/* Only for superuser! */
1613		error = suser (td);
1614		if (error)
1615			return error;
1616		s = splhigh ();
1617		c->rintr = 0;
1618		c->tintr = 0;
1619		c->mintr = 0;
1620		c->ibytes = 0;
1621		c->ipkts = 0;
1622		c->ierrs = 0;
1623		c->obytes = 0;
1624		c->opkts = 0;
1625		c->oerrs = 0;
1626		splx (s);
1627		return 0;
1628
1629	case SERIAL_GETBAUD:
1630		CX_DEBUG2 (d, ("ioctl: getbaud\n"));
1631		if (c->mode == M_ASYNC)
1632			return EINVAL;
1633		s = splhigh ();
1634		*(long*)data = cx_get_baud(c);
1635		splx (s);
1636		return 0;
1637
1638	case SERIAL_SETBAUD:
1639		CX_DEBUG2 (d, ("ioctl: setbaud\n"));
1640		/* Only for superuser! */
1641		error = suser (td);
1642		if (error)
1643			return error;
1644		if (c->mode == M_ASYNC)
1645			return EINVAL;
1646		s = splhigh ();
1647		cx_set_baud (c, *(long*)data);
1648		splx (s);
1649		return 0;
1650
1651	case SERIAL_GETLOOP:
1652		CX_DEBUG2 (d, ("ioctl: getloop\n"));
1653		if (c->mode == M_ASYNC)
1654			return EINVAL;
1655		s = splhigh ();
1656		*(int*)data = cx_get_loop (c);
1657		splx (s);
1658		return 0;
1659
1660	case SERIAL_SETLOOP:
1661		CX_DEBUG2 (d, ("ioctl: setloop\n"));
1662		/* Only for superuser! */
1663		error = suser (td);
1664		if (error)
1665			return error;
1666		if (c->mode == M_ASYNC)
1667			return EINVAL;
1668		s = splhigh ();
1669		cx_set_loop (c, *(int*)data);
1670		splx (s);
1671		return 0;
1672
1673	case SERIAL_GETDPLL:
1674		CX_DEBUG2 (d, ("ioctl: getdpll\n"));
1675		if (c->mode == M_ASYNC)
1676			return EINVAL;
1677		s = splhigh ();
1678		*(int*)data = cx_get_dpll (c);
1679		splx (s);
1680		return 0;
1681
1682	case SERIAL_SETDPLL:
1683		CX_DEBUG2 (d, ("ioctl: setdpll\n"));
1684		/* Only for superuser! */
1685		error = suser (td);
1686		if (error)
1687			return error;
1688		if (c->mode == M_ASYNC)
1689			return EINVAL;
1690		s = splhigh ();
1691		cx_set_dpll (c, *(int*)data);
1692		splx (s);
1693		return 0;
1694
1695	case SERIAL_GETNRZI:
1696		CX_DEBUG2 (d, ("ioctl: getnrzi\n"));
1697		if (c->mode == M_ASYNC)
1698			return EINVAL;
1699		s = splhigh ();
1700		*(int*)data = cx_get_nrzi (c);
1701		splx (s);
1702		return 0;
1703
1704	case SERIAL_SETNRZI:
1705		CX_DEBUG2 (d, ("ioctl: setnrzi\n"));
1706		/* Only for superuser! */
1707		error = suser (td);
1708		if (error)
1709			return error;
1710		if (c->mode == M_ASYNC)
1711			return EINVAL;
1712		s = splhigh ();
1713		cx_set_nrzi (c, *(int*)data);
1714		splx (s);
1715		return 0;
1716
1717	case SERIAL_GETDEBUG:
1718		CX_DEBUG2 (d, ("ioctl: getdebug\n"));
1719		s = splhigh ();
1720		*(int*)data = c->debug;
1721		splx (s);
1722		return 0;
1723
1724	case SERIAL_SETDEBUG:
1725		CX_DEBUG2 (d, ("ioctl: setdebug\n"));
1726		/* Only for superuser! */
1727		error = suser (td);
1728		if (error)
1729			return error;
1730		s = splhigh ();
1731		c->debug = *(int*)data;
1732		splx (s);
1733#ifndef	NETGRAPH
1734		if (d->chan->debug)
1735			d->pp.pp_if.if_flags |= IFF_DEBUG;
1736		else
1737			d->pp.pp_if.if_flags &= (~IFF_DEBUG);
1738#endif
1739		return 0;
1740	}
1741
1742	switch (cmd) {
1743	case TIOCSDTR:	/* Set DTR */
1744		CX_DEBUG2 (d, ("ioctl: tiocsdtr\n"));
1745		s = splhigh ();
1746		cx_set_dtr (c, 1);
1747		splx (s);
1748		return 0;
1749
1750	case TIOCCDTR:	/* Clear DTR */
1751		CX_DEBUG2 (d, ("ioctl: tioccdtr\n"));
1752		s = splhigh ();
1753		cx_set_dtr (c, 0);
1754		splx (s);
1755		return 0;
1756
1757	case TIOCMSET:	/* Set DTR/RTS */
1758		CX_DEBUG2 (d, ("ioctl: tiocmset\n"));
1759		s = splhigh ();
1760		cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0);
1761		cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0);
1762		splx (s);
1763		return 0;
1764
1765	case TIOCMBIS:	/* Add DTR/RTS */
1766		CX_DEBUG2 (d, ("ioctl: tiocmbis\n"));
1767		s = splhigh ();
1768		if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1);
1769		if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1);
1770		splx (s);
1771		return 0;
1772
1773	case TIOCMBIC:	/* Clear DTR/RTS */
1774		CX_DEBUG2 (d, ("ioctl: tiocmbic\n"));
1775		s = splhigh ();
1776		if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0);
1777		if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0);
1778		splx (s);
1779		return 0;
1780
1781	case TIOCMGET:	/* Get modem status */
1782		CX_DEBUG2 (d, ("ioctl: tiocmget\n"));
1783		*(int*)data = cx_modem_status (d);
1784		return 0;
1785
1786	}
1787
1788	CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd));
1789	return ENOTTY;
1790}
1791
1792
1793void cx_softintr (void *unused)
1794{
1795	drv_t *d;
1796	async_q *q;
1797	int i, s, ic, k;
1798	while (MY_SOFT_INTR) {
1799		MY_SOFT_INTR = 0;
1800		for (i=0; i<NCX*NCHAN; ++i) {
1801			d = channel [i];
1802			if (!d || !d->chan || d->chan->type == T_NONE
1803			    || d->chan->mode != M_ASYNC || !d->tty
1804			    || !d->tty->t_dev)
1805				continue;
1806			s = splhigh ();
1807			if (d->intr_action & CX_READ) {
1808				q = &(d->aqueue);
1809				if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) {
1810					k = AQ_GSZ(q);
1811					if (d->tty->t_rawq.c_cc + k >
1812						d->tty->t_ihiwat
1813					    && (d->tty->t_cflag & CRTS_IFLOW
1814						|| d->tty->t_iflag & IXOFF)
1815					    && !(d->tty->t_state & TS_TBLOCK))
1816						ttyblock(d->tty);
1817					d->tty->t_rawcc += k;
1818					while (k>0) {
1819						k--;
1820						AQ_POP (q, ic);
1821						splx (s);
1822						putc (ic, &d->tty->t_rawq);
1823						s = splhigh ();
1824					}
1825					ttwakeup(d->tty);
1826					if (d->tty->t_state & TS_TTSTOP
1827					    && (d->tty->t_iflag & IXANY
1828						|| d->tty->t_cc[VSTART] ==
1829						d->tty->t_cc[VSTOP])) {
1830						d->tty->t_state &= ~TS_TTSTOP;
1831						d->tty->t_lflag &= ~FLUSHO;
1832						d->intr_action |= CX_WRITE;
1833					}
1834				} else {
1835					while (q->end != q->beg) {
1836						AQ_POP (q, ic);
1837						splx (s);
1838						ttyld_rint (d->tty, ic);
1839						s = splhigh ();
1840					}
1841				}
1842				d->intr_action &= ~CX_READ;
1843			}
1844			splx (s);
1845
1846			s = splhigh ();
1847			if (d->intr_action & CX_WRITE) {
1848				if (d->tty->t_line)
1849					ttyld_start (d->tty);
1850				else
1851					cx_oproc (d->tty);
1852				d->intr_action &= ~CX_WRITE;
1853			}
1854			splx (s);
1855
1856		}
1857	}
1858}
1859
1860/*
1861 * Fill transmitter buffer with data.
1862 */
1863static void cx_oproc (struct tty *tp)
1864{
1865	int s, k;
1866	drv_t *d;
1867	static u_char buf[DMABUFSZ];
1868	u_char *p;
1869	u_short len = 0, sublen = 0;
1870
1871	s = splhigh();
1872
1873	d = tp->t_sc;
1874
1875	CX_DEBUG2 (d, ("cx_oproc\n"));
1876	if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts)
1877		cx_set_rts (d->chan, 0);
1878	else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts)
1879		cx_set_rts (d->chan, 1);
1880
1881	if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) {
1882		/* Start transmitter. */
1883		cx_enable_transmit (d->chan, 1);
1884
1885		/* Is it busy? */
1886		if (! cx_buf_free (d->chan)) {
1887			tp->t_state |= TS_BUSY;
1888			splx (s);
1889			return;
1890		}
1891		if (tp->t_iflag & IXOFF) {
1892			p = (buf + (DMABUFSZ/2));
1893			sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
1894			k = sublen;
1895			while (k--) {
1896				/* Send XON/XOFF out of band. */
1897				if (*p == tp->t_cc[VSTOP]) {
1898					cx_xflow_ctl (d->chan, 0);
1899					p++;
1900					continue;
1901				}
1902				if (*p == tp->t_cc[VSTART]) {
1903					cx_xflow_ctl (d->chan, 1);
1904					p++;
1905					continue;
1906				}
1907				buf[len] = *p;
1908				len++;
1909				p++;
1910			}
1911		} else {
1912			p = buf;
1913			len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
1914		}
1915		if (len) {
1916			cx_send_packet (d->chan, buf, len, 0);
1917			tp->t_state |= TS_BUSY;
1918			d->atimeout = 10;
1919			CX_DEBUG2 (d, ("out %d bytes\n", len));
1920		}
1921	}
1922	ttwwakeup (tp);
1923	splx (s);
1924}
1925
1926static int cx_param (struct tty *tp, struct termios *t)
1927{
1928	drv_t *d;
1929	int s, bits, parity;
1930
1931	d = tp->t_sc;
1932
1933	s = splhigh ();
1934	if (t->c_ospeed == 0) {
1935		/* Clear DTR and RTS. */
1936		cx_set_dtr (d->chan, 0);
1937		splx (s);
1938		CX_DEBUG2 (d, ("cx_param (hangup)\n"));
1939		return 0;
1940	}
1941	CX_DEBUG2 (d, ("cx_param\n"));
1942
1943	/* Check requested parameters. */
1944	if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) {
1945		splx (s);
1946		return EINVAL;
1947	}
1948	if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) {
1949		splx (s);
1950		return EINVAL;
1951	}
1952
1953  	/* And copy them to tty and channel structures. */
1954	tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed;
1955	tp->t_cflag = t->c_cflag;
1956
1957	/* Set character length and parity mode. */
1958	switch (t->c_cflag & CSIZE) {
1959	default:
1960	case CS8: bits = 8; break;
1961	case CS7: bits = 7; break;
1962	case CS6: bits = 6; break;
1963	case CS5: bits = 5; break;
1964	}
1965
1966	parity = ((t->c_cflag & PARENB) ? 1 : 0) *
1967		 (1 + ((t->c_cflag & PARODD) ? 0 : 1));
1968
1969	/* Set current channel number. */
1970	if (! d->chan->dtr)
1971		cx_set_dtr (d->chan, 1);
1972
1973	ttyldoptim (tp);
1974	cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB),
1975		!(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS),
1976		(t->c_iflag & IXON), (t->c_iflag & IXANY),
1977		t->c_cc[VSTART], t->c_cc[VSTOP]);
1978	splx (s);
1979	return 0;
1980}
1981
1982/*
1983 * Stop output on a line
1984 */
1985static void cx_stop (struct tty *tp, int flag)
1986{
1987	drv_t *d;
1988	int s;
1989
1990	d = tp->t_sc;
1991	s = splhigh ();
1992
1993	if (tp->t_state & TS_BUSY) {
1994		/* Stop transmitter */
1995		CX_DEBUG2 (d, ("cx_stop\n"));
1996		cx_transmitter_ctl (d->chan, 0);
1997	}
1998	splx (s);
1999}
2000
2001/*
2002 * Process the (delayed) carrier signal setup.
2003 */
2004static void cx_carrier (void *arg)
2005{
2006	drv_t *d = arg;
2007	cx_chan_t *c = d->chan;
2008	int s, cd;
2009
2010	s = splhigh ();
2011	cd = cx_get_cd (c);
2012	if (d->cd != cd) {
2013		if (cd) {
2014			CX_DEBUG (d, ("carrier on\n"));
2015			d->cd = 1;
2016			splx (s);
2017			if (d->tty)
2018				ttyld_modem(d->tty, 1);
2019		} else {
2020			CX_DEBUG (d, ("carrier loss\n"));
2021			d->cd = 0;
2022			splx (s);
2023			if (d->tty)
2024				ttyld_modem(d->tty, 0);
2025		}
2026	}
2027}
2028
2029/*
2030 * Modem signal callback function.
2031 */
2032static void cx_modem (cx_chan_t *c)
2033{
2034	drv_t *d = c->sys;
2035
2036	if (!d || c->mode != M_ASYNC)
2037		return;
2038	/* Handle carrier detect/loss. */
2039	untimeout (cx_carrier, c, d->dcd_timeout_handle);
2040	/* Carrier changed - delay processing DCD for a while
2041	 * to give both sides some time to initialize. */
2042	d->dcd_timeout_handle = timeout (cx_carrier, d, hz/2);
2043}
2044
2045static struct cdevsw cx_cdevsw = {
2046	.d_version  = D_VERSION,
2047	.d_open     = cx_open,
2048	.d_close    = cx_close,
2049	.d_ioctl    = cx_ioctl,
2050	.d_name     = "cx",
2051	.d_flags    = D_TTY | D_NEEDGIANT,
2052};
2053
2054#ifdef NETGRAPH
2055static int ng_cx_constructor (node_p node)
2056{
2057	drv_t *d = NG_NODE_PRIVATE (node);
2058	CX_DEBUG (d, ("Constructor\n"));
2059	return EINVAL;
2060}
2061
2062static int ng_cx_newhook (node_p node, hook_p hook, const char *name)
2063{
2064	int s;
2065	drv_t *d = NG_NODE_PRIVATE (node);
2066
2067	if (d->chan->mode == M_ASYNC)
2068		return EINVAL;
2069
2070	/* Attach debug hook */
2071	if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) {
2072		NG_HOOK_SET_PRIVATE (hook, NULL);
2073		d->debug_hook = hook;
2074		return 0;
2075	}
2076
2077	/* Check for raw hook */
2078	if (strcmp (name, NG_CX_HOOK_RAW) != 0)
2079		return EINVAL;
2080
2081	NG_HOOK_SET_PRIVATE (hook, d);
2082	d->hook = hook;
2083	s = splhigh ();
2084	cx_up (d);
2085	splx (s);
2086	return 0;
2087}
2088
2089static int print_modems (char *s, cx_chan_t *c, int need_header)
2090{
2091	int status = cx_modem_status (c->sys);
2092	int length = 0;
2093
2094	if (need_header)
2095		length += sprintf (s + length, "  LE   DTR  DSR  RTS  CTS  CD\n");
2096	length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n",
2097		status & TIOCM_LE  ? "On" : "-",
2098		status & TIOCM_DTR ? "On" : "-",
2099		status & TIOCM_DSR ? "On" : "-",
2100		status & TIOCM_RTS ? "On" : "-",
2101		status & TIOCM_CTS ? "On" : "-",
2102		status & TIOCM_CD  ? "On" : "-");
2103	return length;
2104}
2105
2106static int print_stats (char *s, cx_chan_t *c, int need_header)
2107{
2108	int length = 0;
2109
2110	if (need_header)
2111		length += sprintf (s + length, "  Rintr   Tintr   Mintr   Ibytes   Ipkts   Ierrs   Obytes   Opkts   Oerrs\n");
2112	length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n",
2113		c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts,
2114		c->ierrs, c->obytes, c->opkts, c->oerrs);
2115	return length;
2116}
2117
2118static int print_chan (char *s, cx_chan_t *c)
2119{
2120	drv_t *d = c->sys;
2121	int length = 0;
2122
2123	length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num);
2124	if (d->chan->debug)
2125		length += sprintf (s + length, " debug=%d", d->chan->debug);
2126
2127	if (cx_get_baud (c))
2128		length += sprintf (s + length, " %ld", cx_get_baud (c));
2129	else
2130		length += sprintf (s + length, " extclock");
2131
2132	if (c->mode == M_HDLC) {
2133		length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off");
2134		length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off");
2135	}
2136
2137	length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n");
2138	return length;
2139}
2140
2141static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook)
2142{
2143	drv_t *d = NG_NODE_PRIVATE (node);
2144	struct ng_mesg *msg;
2145	struct ng_mesg *resp = NULL;
2146	int error = 0;
2147
2148	if (!d)
2149		return EINVAL;
2150
2151	CX_DEBUG (d, ("Rcvmsg\n"));
2152	NGI_GET_MSG (item, msg);
2153	switch (msg->header.typecookie) {
2154	default:
2155		error = EINVAL;
2156		break;
2157
2158	case NGM_CX_COOKIE:
2159		printf ("Don't forget to implement\n");
2160		error = EINVAL;
2161		break;
2162
2163	case NGM_GENERIC_COOKIE:
2164		switch (msg->header.cmd) {
2165		default:
2166			error = EINVAL;
2167			break;
2168
2169		case NGM_TEXT_STATUS: {
2170			char *s;
2171			int l = 0;
2172			int dl = sizeof (struct ng_mesg) + 730;
2173
2174			NG_MKRESPONSE (resp, msg, dl, M_NOWAIT);
2175			if (! resp) {
2176				error = ENOMEM;
2177				break;
2178			}
2179			bzero (resp, dl);
2180			s = (resp)->data;
2181			l += print_chan (s + l, d->chan);
2182			l += print_stats (s + l, d->chan, 1);
2183			l += print_modems (s + l, d->chan, 1);
2184			strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRLEN);
2185			}
2186			break;
2187		}
2188		break;
2189	}
2190	NG_RESPOND_MSG (error, node, item, resp);
2191	NG_FREE_MSG (msg);
2192	return error;
2193}
2194
2195static int ng_cx_rcvdata (hook_p hook, item_p item)
2196{
2197	drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook));
2198	struct mbuf *m;
2199	struct ng_tag_prio *ptag;
2200	struct ifqueue *q;
2201	int s;
2202
2203	NGI_GET_M (item, m);
2204	NG_FREE_ITEM (item);
2205	if (! NG_HOOK_PRIVATE (hook) || ! d) {
2206		NG_FREE_M (m);
2207		return ENETDOWN;
2208	}
2209
2210	/* Check for high priority data */
2211	if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE,
2212	    NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) )
2213		q = &d->hi_queue;
2214	else
2215		q = &d->lo_queue;
2216
2217	s = splhigh ();
2218	IF_LOCK (q);
2219	if (_IF_QFULL (q)) {
2220		_IF_DROP (q);
2221		IF_UNLOCK (q);
2222		splx (s);
2223		NG_FREE_M (m);
2224		return ENOBUFS;
2225	}
2226	_IF_ENQUEUE (q, m);
2227	IF_UNLOCK (q);
2228	cx_start (d);
2229	splx (s);
2230	return 0;
2231}
2232
2233static int ng_cx_rmnode (node_p node)
2234{
2235	drv_t *d = NG_NODE_PRIVATE (node);
2236
2237	CX_DEBUG (d, ("Rmnode\n"));
2238	if (d && d->running) {
2239		int s = splhigh ();
2240		cx_down (d);
2241		splx (s);
2242	}
2243#ifdef	KLD_MODULE
2244	if (node->nd_flags & NGF_REALLY_DIE) {
2245		NG_NODE_SET_PRIVATE (node, NULL);
2246		NG_NODE_UNREF (node);
2247	}
2248	NG_NODE_REVIVE(node);		/* Persistant node */
2249#endif
2250	return 0;
2251}
2252
2253static void ng_cx_watchdog (void *arg)
2254{
2255	drv_t *d = arg;
2256
2257	if (d->timeout == 1)
2258		cx_watchdog (d);
2259	if (d->timeout)
2260		d->timeout--;
2261	d->timeout_handle = timeout (ng_cx_watchdog, d, hz);
2262}
2263
2264static int ng_cx_connect (hook_p hook)
2265{
2266	drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2267
2268	d->timeout_handle = timeout (ng_cx_watchdog, d, hz);
2269	return 0;
2270}
2271
2272static int ng_cx_disconnect (hook_p hook)
2273{
2274	drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2275	int s;
2276
2277	s = splhigh ();
2278	if (NG_HOOK_PRIVATE (hook))
2279		cx_down (d);
2280	splx (s);
2281	untimeout (ng_cx_watchdog, d, d->timeout_handle);
2282	return 0;
2283}
2284#endif /*NETGRAPH*/
2285
2286static int cx_modevent (module_t mod, int type, void *unused)
2287{
2288	static int load_count = 0;
2289
2290	switch (type) {
2291	case MOD_LOAD:
2292#if defined NETGRAPH
2293		if (ng_newtype (&typestruct))
2294			printf ("Failed to register ng_cx\n");
2295#endif
2296		++load_count;
2297		timeout_handle = timeout (cx_timeout, 0, hz*5);
2298		/* Software interrupt. */
2299		swi_add(&tty_ithd, "cx", cx_softintr, NULL, SWI_TTY, 0,
2300		    &cx_fast_ih);
2301		break;
2302	case MOD_UNLOAD:
2303		if (load_count == 1) {
2304			printf ("Removing device entry for Sigma\n");
2305#if defined NETGRAPH
2306			ng_rmtype (&typestruct);
2307#endif
2308		}
2309		if (timeout_handle.callout)
2310			untimeout (cx_timeout, 0, timeout_handle);
2311		ithread_remove_handler (cx_fast_ih);
2312		--load_count;
2313		break;
2314	case MOD_SHUTDOWN:
2315		break;
2316	}
2317	return 0;
2318}
2319
2320#ifdef NETGRAPH
2321static struct ng_type typestruct = {
2322	.version	= NG_ABI_VERSION,
2323	.name		= NG_CX_NODE_TYPE,
2324	.constructor	= ng_cx_constructor,
2325	.rcvmsg		= ng_cx_rcvmsg,
2326	.shutdown	= ng_cx_rmnode,
2327	.newhook	= ng_cx_newhook,
2328	.connect	= ng_cx_connect,
2329	.rcvdata	= ng_cx_rcvdata,
2330	.disconnect	= ng_cx_disconnect,
2331};
2332#endif /*NETGRAPH*/
2333
2334#ifdef NETGRAPH
2335MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION);
2336#else
2337MODULE_DEPEND (isa_cx, sppp, 1, 1, 1);
2338#endif
2339#ifdef KLD_MODULE
2340DRIVER_MODULE (cxmod, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL);
2341#else
2342DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL);
2343#endif
2344