1 /*-
2 * Cronyx-Sigma adapter driver for FreeBSD.
3 * Supports PPP/HDLC and Cisco/HDLC protocol in synchronous mode,
4 * and asynchronous 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, <[email protected]>
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, <[email protected]>
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("$FreeBSD$");
27
28 #include <sys/param.h>
29
30 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/module.h>
33 #include <sys/priv.h>
34 #include <sys/proc.h>
35 #include <sys/mbuf.h>
36 #include <sys/sockio.h>
37 #include <sys/malloc.h>
38 #include <sys/socket.h>
39 #include <sys/sysctl.h>
40 #include <sys/conf.h>
41 #include <sys/errno.h>
42 #include <sys/serial.h>
43 #include <sys/tty.h>
44 #include <sys/bus.h>
45 #include <machine/bus.h>
46 #include <sys/rman.h>
47 #include <isa/isavar.h>
48 #include <sys/fcntl.h>
49 #include <sys/interrupt.h>
50 #include <vm/vm.h>
51 #include <vm/pmap.h>
52 #include <net/if.h>
53 #include <net/if_var.h>
54 #include <machine/cpufunc.h>
55 #include <machine/cserial.h>
56 #include <machine/resource.h>
57 #include <dev/cx/machdep.h>
58 #include <dev/cx/cxddk.h>
59 #include <dev/cx/cronyxfw.h>
60 #include "opt_ng_cronyx.h"
61 #ifdef NETGRAPH_CRONYX
62 # include "opt_netgraph.h"
63 # include <netgraph/ng_message.h>
64 # include <netgraph/netgraph.h>
65 # include <dev/cx/ng_cx.h>
66 #else
67 # include <net/if_types.h>
68 # include <net/if_sppp.h>
69 # define PP_CISCO IFF_LINK2
70 # include <net/bpf.h>
71 #endif
72
73 #define NCX 1
74
75 /* If we don't have Cronyx's sppp version, we don't have fr support via sppp */
76 #ifndef PP_FR
77 #define PP_FR 0
78 #endif
79
80 #define CX_DEBUG(d,s) ({if (d->chan->debug) {\
81 printf ("%s: ", d->name); printf s;}})
82 #define CX_DEBUG2(d,s) ({if (d->chan->debug>1) {\
83 printf ("%s: ", d->name); printf s;}})
84
85 #define CX_LOCK_NAME "cxX"
86
87 #define CX_LOCK(_bd) mtx_lock (&(_bd)->cx_mtx)
88 #define CX_UNLOCK(_bd) mtx_unlock (&(_bd)->cx_mtx)
89 #define CX_LOCK_ASSERT(_bd) mtx_assert (&(_bd)->cx_mtx, MA_OWNED)
90
91 typedef struct _async_q {
92 int beg;
93 int end;
94 #define BF_SZ 14400
95 int buf[BF_SZ+1];
96 } async_q;
97
98 #define AQ_GSZ(q) ((BF_SZ + (q)->end - (q)->beg)%BF_SZ)
99 #define AQ_PUSH(q,c) {*((q)->buf + (q)->end) = c;\
100 (q)->end = ((q)->end + 1)%BF_SZ;}
101 #define AQ_POP(q,c) {c = *((q)->buf + (q)->beg);\
102 (q)->beg = ((q)->beg + 1)%BF_SZ;}
103
104 static void cx_identify __P((driver_t *, device_t));
105 static int cx_probe __P((device_t));
106 static int cx_attach __P((device_t));
107 static int cx_detach __P((device_t));
108 static t_open_t cx_topen;
109 static t_modem_t cx_tmodem;
110 static t_close_t cx_tclose;
111
112 static device_method_t cx_isa_methods [] = {
113 DEVMETHOD(device_identify, cx_identify),
114 DEVMETHOD(device_probe, cx_probe),
115 DEVMETHOD(device_attach, cx_attach),
116 DEVMETHOD(device_detach, cx_detach),
117
118 DEVMETHOD_END
119 };
120
121 typedef struct _cx_dma_mem_t {
122 unsigned long phys;
123 void *virt;
124 size_t size;
125 bus_dma_tag_t dmat;
126 bus_dmamap_t mapp;
127 } cx_dma_mem_t;
128
129 typedef struct _drv_t {
130 char name [8];
131 cx_chan_t *chan;
132 cx_board_t *board;
133 cx_dma_mem_t dmamem;
134 struct tty *tty;
135 struct callout dcd_timeout_handle;
136 unsigned callout;
137 unsigned lock;
138 int open_dev;
139 int cd;
140 int running;
141 #ifdef NETGRAPH
142 char nodename [NG_NODESIZ];
143 hook_p hook;
144 hook_p debug_hook;
145 node_p node;
146 struct ifqueue lo_queue;
147 struct ifqueue hi_queue;
148 #else
149 struct ifqueue queue;
150 struct ifnet *ifp;
151 #endif
152 short timeout;
153 struct callout timeout_handle;
154 struct cdev *devt;
155 async_q aqueue;
156 #define CX_READ 1
157 #define CX_WRITE 2
158 int intr_action;
159 short atimeout;
160 } drv_t;
161
162 typedef struct _bdrv_t {
163 cx_board_t *board;
164 struct resource *base_res;
165 struct resource *drq_res;
166 struct resource *irq_res;
167 int base_rid;
168 int drq_rid;
169 int irq_rid;
170 void *intrhand;
171 drv_t channel [NCHAN];
172 struct mtx cx_mtx;
173 } bdrv_t;
174
175 static driver_t cx_isa_driver = {
176 "cx",
177 cx_isa_methods,
178 sizeof (bdrv_t),
179 };
180
181 static devclass_t cx_devclass;
182
183 extern long csigma_fw_len;
184 extern const char *csigma_fw_version;
185 extern const char *csigma_fw_date;
186 extern const char *csigma_fw_copyright;
187 extern const cr_dat_tst_t csigma_fw_tvec[];
188 extern const u_char csigma_fw_data[];
189 static void cx_oproc (struct tty *tp);
190 static int cx_param (struct tty *tp, struct termios *t);
191 static void cx_stop (struct tty *tp, int flag);
192 static void cx_receive (cx_chan_t *c, char *data, int len);
193 static void cx_transmit (cx_chan_t *c, void *attachment, int len);
194 static void cx_error (cx_chan_t *c, int data);
195 static void cx_modem (cx_chan_t *c);
196 static void cx_up (drv_t *d);
197 static void cx_start (drv_t *d);
198 static void cx_softintr (void *);
199 static void *cx_fast_ih;
200 static void cx_down (drv_t *d);
201 static void cx_watchdog (drv_t *d);
202 static void cx_watchdog_timer (void *arg);
203 static void cx_carrier (void *arg);
204
205 #ifdef NETGRAPH
206 extern struct ng_type typestruct;
207 #else
208 static void cx_ifstart (struct ifnet *ifp);
209 static void cx_tlf (struct sppp *sp);
210 static void cx_tls (struct sppp *sp);
211 static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data);
212 static void cx_initialize (void *softc);
213 #endif
214
215 static cx_board_t *adapter [NCX];
216 static drv_t *channel [NCX*NCHAN];
217 static struct callout led_timo [NCX];
218 static struct callout timeout_handle;
219
220 static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td);
221 static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td);
222 static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td);
223 static struct cdevsw cx_cdevsw = {
224 .d_version = D_VERSION,
225 .d_open = cx_open,
226 .d_close = cx_close,
227 .d_ioctl = cx_ioctl,
228 .d_name = "cx",
229 .d_flags = D_TTY,
230 };
231
232 static int MY_SOFT_INTR;
233
234 /*
235 * Make an mbuf from data.
236 */
makembuf(void * buf,u_int len)237 static struct mbuf *makembuf (void *buf, u_int len)
238 {
239 struct mbuf *m, *o, *p;
240
241 MGETHDR (m, M_NOWAIT, MT_DATA);
242
243 if (! m)
244 return 0;
245
246 if (len >= MINCLSIZE)
247 MCLGET (m, M_NOWAIT);
248
249 m->m_pkthdr.len = len;
250 m->m_len = 0;
251
252 p = m;
253 while (len) {
254 u_int n = M_TRAILINGSPACE (p);
255 if (n > len)
256 n = len;
257 if (! n) {
258 /* Allocate new mbuf. */
259 o = p;
260 MGET (p, M_NOWAIT, MT_DATA);
261 if (! p) {
262 m_freem (m);
263 return 0;
264 }
265 if (len >= MINCLSIZE)
266 MCLGET (p, M_NOWAIT);
267 p->m_len = 0;
268 o->m_next = p;
269
270 n = M_TRAILINGSPACE (p);
271 if (n > len)
272 n = len;
273 }
274 bcopy (buf, mtod (p, caddr_t) + p->m_len, n);
275
276 p->m_len += n;
277 buf = n + (char*) buf;
278 len -= n;
279 }
280 return m;
281 }
282
283 /*
284 * Recover after lost transmit interrupts.
285 */
cx_timeout(void * arg)286 static void cx_timeout (void *arg)
287 {
288 drv_t *d;
289 int s, i, k;
290
291 for (i = 0; i < NCX; i++) {
292 if (adapter[i] == NULL)
293 continue;
294 for (k = 0; k < NCHAN; ++k) {
295 d = channel[i * NCHAN + k];
296 if (! d)
297 continue;
298 s = splhigh ();
299 CX_LOCK ((bdrv_t *)d->board->sys);
300 if (d->atimeout == 1 && d->tty && d->tty->t_state & TS_BUSY) {
301 d->tty->t_state &= ~TS_BUSY;
302 if (d->tty->t_dev) {
303 d->intr_action |= CX_WRITE;
304 MY_SOFT_INTR = 1;
305 swi_sched (cx_fast_ih, 0);
306 }
307 CX_DEBUG (d, ("cx_timeout\n"));
308 }
309 if (d->atimeout)
310 d->atimeout--;
311 CX_UNLOCK ((bdrv_t *)d->board->sys);
312 splx (s);
313 }
314 }
315 callout_reset (&timeout_handle, hz*5, cx_timeout, 0);
316 }
317
cx_led_off(void * arg)318 static void cx_led_off (void *arg)
319 {
320 cx_board_t *b = arg;
321 bdrv_t *bd = b->sys;
322 int s;
323
324 s = splhigh ();
325 CX_LOCK (bd);
326 cx_led (b, 0);
327 CX_UNLOCK (bd);
328 splx (s);
329 }
330
331 /*
332 * Activate interrupt handler from DDK.
333 */
cx_intr(void * arg)334 static void cx_intr (void *arg)
335 {
336 bdrv_t *bd = arg;
337 cx_board_t *b = bd->board;
338 #ifndef NETGRAPH
339 int i;
340 #endif
341 int s = splhigh ();
342
343 CX_LOCK (bd);
344 /* Turn LED on. */
345 cx_led (b, 1);
346
347 cx_int_handler (b);
348
349 /* Turn LED off 50 msec later. */
350 callout_reset (&led_timo[b->num], hz/20, cx_led_off, b);
351 CX_UNLOCK (bd);
352 splx (s);
353
354 #ifndef NETGRAPH
355 /* Pass packets in a lock-free state */
356 for (i = 0; i < NCHAN && b->chan[i].type; i++) {
357 drv_t *d = b->chan[i].sys;
358 struct mbuf *m;
359 if (!d || !d->running)
360 continue;
361 while (_IF_QLEN(&d->queue)) {
362 IF_DEQUEUE (&d->queue,m);
363 if (!m)
364 continue;
365 sppp_input (d->ifp, m);
366 }
367 }
368 #endif
369 }
370
probe_irq(cx_board_t * b,int irq)371 static int probe_irq (cx_board_t *b, int irq)
372 {
373 int mask, busy, cnt;
374
375 /* Clear pending irq, if any. */
376 cx_probe_irq (b, -irq);
377 DELAY (100);
378 for (cnt=0; cnt<5; ++cnt) {
379 /* Get the mask of pending irqs, assuming they are busy.
380 * Activate the adapter on given irq. */
381 busy = cx_probe_irq (b, irq);
382 DELAY (100);
383
384 /* Get the mask of active irqs.
385 * Deactivate our irq. */
386 mask = cx_probe_irq (b, -irq);
387 DELAY (100);
388 if ((mask & ~busy) == 1 << irq) {
389 cx_probe_irq (b, 0);
390 /* printf ("cx%d: irq %d ok, mask=0x%04x, busy=0x%04x\n",
391 b->num, irq, mask, busy); */
392 return 1;
393 }
394 }
395 /* printf ("cx%d: irq %d not functional, mask=0x%04x, busy=0x%04x\n",
396 b->num, irq, mask, busy); */
397 cx_probe_irq (b, 0);
398 return 0;
399 }
400
401 static short porttab [] = {
402 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
403 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
404 };
405 static char dmatab [] = { 7, 6, 5, 0 };
406 static char irqtab [] = { 5, 10, 11, 7, 3, 15, 12, 0 };
407
cx_is_free_res(device_t dev,int rid,int type,rman_res_t start,rman_res_t end,rman_res_t count)408 static int cx_is_free_res (device_t dev, int rid, int type, rman_res_t start,
409 rman_res_t end, rman_res_t count)
410 {
411 struct resource *res;
412
413 if (!(res = bus_alloc_resource (dev, type, &rid, start, end, count, 0)))
414 return 0;
415
416 bus_release_resource (dev, type, rid, res);
417
418 return 1;
419 }
420
cx_identify(driver_t * driver,device_t dev)421 static void cx_identify (driver_t *driver, device_t dev)
422 {
423 rman_res_t iobase, rescount;
424 int devcount;
425 device_t *devices;
426 device_t child;
427 devclass_t my_devclass;
428 int i, k;
429
430 if ((my_devclass = devclass_find ("cx")) == NULL)
431 return;
432
433 devclass_get_devices (my_devclass, &devices, &devcount);
434
435 if (devcount == 0) {
436 /* We should find all devices by our self. We could alter other
437 * devices, but we don't have a choise
438 */
439 for (i = 0; (iobase = porttab [i]) != 0; i++) {
440 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
441 iobase, iobase + NPORT, NPORT))
442 continue;
443 if (cx_probe_board (iobase, -1, -1) == 0)
444 continue;
445
446 devcount++;
447
448 child = BUS_ADD_CHILD (dev, ISA_ORDER_SPECULATIVE, "cx",
449 -1);
450
451 if (child == NULL)
452 return;
453
454 device_set_desc_copy (child, "Cronyx Sigma");
455 device_set_driver (child, driver);
456 bus_set_resource (child, SYS_RES_IOPORT, 0,
457 iobase, NPORT);
458
459 if (devcount >= NCX)
460 break;
461 }
462 } else {
463 static short porttab [] = {
464 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
465 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
466 };
467 /* Lets check user choise.
468 */
469 for (k = 0; k < devcount; k++) {
470 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
471 &iobase, &rescount) != 0)
472 continue;
473
474 for (i = 0; porttab [i] != 0; i++) {
475 if (porttab [i] != iobase)
476 continue;
477 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
478 iobase, iobase + NPORT, NPORT))
479 continue;
480 if (cx_probe_board (iobase, -1, -1) == 0)
481 continue;
482 porttab [i] = -1;
483 device_set_desc_copy (devices[k], "Cronyx Sigma");
484 break;
485 }
486
487 if (porttab [i] == 0) {
488 device_delete_child (
489 device_get_parent (devices[k]),
490 devices [k]);
491 devices[k] = 0;
492 continue;
493 }
494 }
495 for (k = 0; k < devcount; k++) {
496 if (devices[k] == 0)
497 continue;
498 if (bus_get_resource (devices[k], SYS_RES_IOPORT, 0,
499 &iobase, &rescount) == 0)
500 continue;
501 for (i = 0; (iobase = porttab [i]) != 0; i++) {
502 if (porttab [i] == -1) {
503 continue;
504 }
505 if (!cx_is_free_res (devices[k], 0, SYS_RES_IOPORT,
506 iobase, iobase + NPORT, NPORT))
507 continue;
508 if (cx_probe_board (iobase, -1, -1) == 0)
509 continue;
510
511 bus_set_resource (devices[k], SYS_RES_IOPORT, 0,
512 iobase, NPORT);
513 porttab [i] = -1;
514 device_set_desc_copy (devices[k], "Cronyx Sigma");
515 break;
516 }
517 if (porttab [i] == 0) {
518 device_delete_child (
519 device_get_parent (devices[k]),
520 devices [k]);
521 }
522 }
523 free (devices, M_TEMP);
524 }
525
526 return;
527 }
528
cx_probe(device_t dev)529 static int cx_probe (device_t dev)
530 {
531 int unit = device_get_unit (dev);
532 int i;
533 rman_res_t iobase, rescount;
534
535 if (!device_get_desc (dev) ||
536 strcmp (device_get_desc (dev), "Cronyx Sigma"))
537 return ENXIO;
538
539 if (bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount) != 0) {
540 printf ("cx%d: Couldn't get IOPORT\n", unit);
541 return ENXIO;
542 }
543
544 if (!cx_is_free_res (dev, 0, SYS_RES_IOPORT,
545 iobase, iobase + NPORT, NPORT)) {
546 printf ("cx%d: Resource IOPORT isn't free %lx\n", unit, iobase);
547 return ENXIO;
548 }
549
550 for (i = 0; porttab [i] != 0; i++) {
551 if (porttab [i] == iobase) {
552 porttab [i] = -1;
553 break;
554 }
555 }
556
557 if (porttab [i] == 0) {
558 return ENXIO;
559 }
560
561 if (!cx_probe_board (iobase, -1, -1)) {
562 printf ("cx%d: probing for Sigma at %lx faild\n", unit, iobase);
563 return ENXIO;
564 }
565
566 return 0;
567 }
568
569 static void
cx_bus_dmamap_addr(void * arg,bus_dma_segment_t * segs,int nseg,int error)570 cx_bus_dmamap_addr (void *arg, bus_dma_segment_t *segs, int nseg, int error)
571 {
572 unsigned long *addr;
573
574 if (error)
575 return;
576
577 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
578 addr = arg;
579 *addr = segs->ds_addr;
580 }
581
582 static int
cx_bus_dma_mem_alloc(int bnum,int cnum,cx_dma_mem_t * dmem)583 cx_bus_dma_mem_alloc (int bnum, int cnum, cx_dma_mem_t *dmem)
584 {
585 int error;
586
587 error = bus_dma_tag_create (NULL, 16, 0, BUS_SPACE_MAXADDR_24BIT,
588 BUS_SPACE_MAXADDR, NULL, NULL, dmem->size, 1,
589 dmem->size, 0, NULL, NULL, &dmem->dmat);
590 if (error) {
591 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
592 else printf ("cx%d: ", bnum);
593 printf ("couldn't allocate tag for dma memory\n");
594 return 0;
595 }
596 error = bus_dmamem_alloc (dmem->dmat, (void **)&dmem->virt,
597 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &dmem->mapp);
598 if (error) {
599 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
600 else printf ("cx%d: ", bnum);
601 printf ("couldn't allocate mem for dma memory\n");
602 bus_dma_tag_destroy (dmem->dmat);
603 return 0;
604 }
605 error = bus_dmamap_load (dmem->dmat, dmem->mapp, dmem->virt,
606 dmem->size, cx_bus_dmamap_addr, &dmem->phys, 0);
607 if (error) {
608 if (cnum >= 0) printf ("cx%d-%d: ", bnum, cnum);
609 else printf ("cx%d: ", bnum);
610 printf ("couldn't load mem map for dma memory\n");
611 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
612 bus_dma_tag_destroy (dmem->dmat);
613 return 0;
614 }
615 return 1;
616 }
617
618 static void
cx_bus_dma_mem_free(cx_dma_mem_t * dmem)619 cx_bus_dma_mem_free (cx_dma_mem_t *dmem)
620 {
621 bus_dmamap_unload (dmem->dmat, dmem->mapp);
622 bus_dmamem_free (dmem->dmat, dmem->virt, dmem->mapp);
623 bus_dma_tag_destroy (dmem->dmat);
624 }
625
626 /*
627 * The adapter is present, initialize the driver structures.
628 */
cx_attach(device_t dev)629 static int cx_attach (device_t dev)
630 {
631 bdrv_t *bd = device_get_softc (dev);
632 rman_res_t iobase, drq, irq, rescount;
633 int unit = device_get_unit (dev);
634 char *cx_ln = CX_LOCK_NAME;
635 cx_board_t *b;
636 cx_chan_t *c;
637 drv_t *d;
638 int i;
639 int s;
640
641 KASSERT ((bd != NULL), ("cx%d: NULL device softc\n", unit));
642
643 bus_get_resource (dev, SYS_RES_IOPORT, 0, &iobase, &rescount);
644 bd->base_rid = 0;
645 bd->base_res = bus_alloc_resource (dev, SYS_RES_IOPORT, &bd->base_rid,
646 iobase, iobase + NPORT, NPORT, RF_ACTIVE);
647 if (! bd->base_res) {
648 printf ("cx%d: cannot allocate base address\n", unit);
649 return ENXIO;
650 }
651
652 if (bus_get_resource (dev, SYS_RES_DRQ, 0, &drq, &rescount) != 0) {
653 for (i = 0; (drq = dmatab [i]) != 0; i++) {
654 if (!cx_is_free_res (dev, 0, SYS_RES_DRQ,
655 drq, drq + 1, 1))
656 continue;
657 bus_set_resource (dev, SYS_RES_DRQ, 0, drq, 1);
658 break;
659 }
660
661 if (dmatab[i] == 0) {
662 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
663 bd->base_res);
664 printf ("cx%d: Couldn't get DRQ\n", unit);
665 return ENXIO;
666 }
667 }
668
669 bd->drq_rid = 0;
670 bd->drq_res = bus_alloc_resource (dev, SYS_RES_DRQ, &bd->drq_rid,
671 drq, drq + 1, 1, RF_ACTIVE);
672 if (! bd->drq_res) {
673 printf ("cx%d: cannot allocate drq\n", unit);
674 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
675 bd->base_res);
676 return ENXIO;
677 }
678
679 if (bus_get_resource (dev, SYS_RES_IRQ, 0, &irq, &rescount) != 0) {
680 for (i = 0; (irq = irqtab [i]) != 0; i++) {
681 if (!cx_is_free_res (dev, 0, SYS_RES_IRQ,
682 irq, irq + 1, 1))
683 continue;
684 bus_set_resource (dev, SYS_RES_IRQ, 0, irq, 1);
685 break;
686 }
687
688 if (irqtab[i] == 0) {
689 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
690 bd->drq_res);
691 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
692 bd->base_res);
693 printf ("cx%d: Couldn't get IRQ\n", unit);
694 return ENXIO;
695 }
696 }
697
698 bd->irq_rid = 0;
699 bd->irq_res = bus_alloc_resource (dev, SYS_RES_IRQ, &bd->irq_rid,
700 irq, irq + 1, 1, RF_ACTIVE);
701 if (! bd->irq_res) {
702 printf ("cx%d: Couldn't allocate irq\n", unit);
703 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
704 bd->drq_res);
705 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
706 bd->base_res);
707 return ENXIO;
708 }
709
710 b = malloc (sizeof (cx_board_t), M_DEVBUF, M_WAITOK);
711 if (!b) {
712 printf ("cx:%d: Couldn't allocate memory\n", unit);
713 return (ENXIO);
714 }
715 adapter[unit] = b;
716 bzero (b, sizeof(cx_board_t));
717
718 if (! cx_open_board (b, unit, iobase, irq, drq)) {
719 printf ("cx%d: error loading firmware\n", unit);
720 free (b, M_DEVBUF);
721 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
722 bd->irq_res);
723 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
724 bd->drq_res);
725 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
726 bd->base_res);
727 return ENXIO;
728 }
729
730 bd->board = b;
731
732 cx_ln[2] = '0' + unit;
733 mtx_init (&bd->cx_mtx, cx_ln, MTX_NETWORK_LOCK, MTX_DEF|MTX_RECURSE);
734 if (! probe_irq (b, irq)) {
735 printf ("cx%d: irq %ld not functional\n", unit, irq);
736 bd->board = 0;
737 adapter [unit] = 0;
738 mtx_destroy (&bd->cx_mtx);
739 free (b, M_DEVBUF);
740 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
741 bd->irq_res);
742 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
743 bd->drq_res);
744 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
745 bd->base_res);
746 return ENXIO;
747 }
748 b->sys = bd;
749 callout_init (&led_timo[b->num], 1);
750 s = splhigh ();
751 if (bus_setup_intr (dev, bd->irq_res,
752 INTR_TYPE_NET|INTR_MPSAFE,
753 NULL, cx_intr, bd, &bd->intrhand)) {
754 printf ("cx%d: Can't setup irq %ld\n", unit, irq);
755 bd->board = 0;
756 b->sys = 0;
757 adapter [unit] = 0;
758 mtx_destroy (&bd->cx_mtx);
759 free (b, M_DEVBUF);
760 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid,
761 bd->irq_res);
762 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid,
763 bd->drq_res);
764 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid,
765 bd->base_res);
766 splx (s);
767 return ENXIO;
768 }
769
770 CX_LOCK (bd);
771 cx_init (b, b->num, b->port, irq, drq);
772 cx_setup_board (b, 0, 0, 0);
773 CX_UNLOCK (bd);
774
775 printf ("cx%d: <Cronyx-Sigma-%s>\n", b->num, b->name);
776
777 for (c=b->chan; c<b->chan+NCHAN; ++c) {
778 if (c->type == T_NONE)
779 continue;
780 d = &bd->channel[c->num];
781 d->dmamem.size = sizeof(cx_buf_t);
782 if (! cx_bus_dma_mem_alloc (unit, c->num, &d->dmamem))
783 continue;
784 d->board = b;
785 d->chan = c;
786 d->open_dev = 0;
787 c->sys = d;
788 channel [b->num*NCHAN + c->num] = d;
789 sprintf (d->name, "cx%d.%d", b->num, c->num);
790
791 switch (c->type) {
792 case T_SYNC_RS232:
793 case T_SYNC_V35:
794 case T_SYNC_RS449:
795 case T_UNIV:
796 case T_UNIV_RS232:
797 case T_UNIV_RS449:
798 case T_UNIV_V35:
799 callout_init (&d->timeout_handle, 1);
800 #ifdef NETGRAPH
801 if (ng_make_node_common (&typestruct, &d->node) != 0) {
802 printf ("%s: cannot make common node\n", d->name);
803 channel [b->num*NCHAN + c->num] = 0;
804 c->sys = 0;
805 cx_bus_dma_mem_free (&d->dmamem);
806 continue;
807 }
808 NG_NODE_SET_PRIVATE (d->node, d);
809 sprintf (d->nodename, "%s%d", NG_CX_NODE_TYPE,
810 c->board->num*NCHAN + c->num);
811 if (ng_name_node (d->node, d->nodename)) {
812 printf ("%s: cannot name node\n", d->nodename);
813 NG_NODE_UNREF (d->node);
814 channel [b->num*NCHAN + c->num] = 0;
815 c->sys = 0;
816 cx_bus_dma_mem_free (&d->dmamem);
817 continue;
818 }
819 d->lo_queue.ifq_maxlen = ifqmaxlen;
820 d->hi_queue.ifq_maxlen = ifqmaxlen;
821 mtx_init (&d->lo_queue.ifq_mtx, "cx_queue_lo", NULL, MTX_DEF);
822 mtx_init (&d->hi_queue.ifq_mtx, "cx_queue_hi", NULL, MTX_DEF);
823 #else /*NETGRAPH*/
824 d->ifp = if_alloc(IFT_PPP);
825 if (d->ifp == NULL) {
826 printf ("%s: cannot if_alloc() common interface\n",
827 d->name);
828 channel [b->num*NCHAN + c->num] = 0;
829 c->sys = 0;
830 cx_bus_dma_mem_free (&d->dmamem);
831 continue;
832 }
833 d->ifp->if_softc = d;
834 if_initname (d->ifp, "cx", b->num * NCHAN + c->num);
835 d->ifp->if_mtu = PP_MTU;
836 d->ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
837 d->ifp->if_ioctl = cx_sioctl;
838 d->ifp->if_start = cx_ifstart;
839 d->ifp->if_init = cx_initialize;
840 d->queue.ifq_maxlen = 2;
841 mtx_init (&d->queue.ifq_mtx, "cx_queue", NULL, MTX_DEF);
842 sppp_attach (d->ifp);
843 if_attach (d->ifp);
844 IFP2SP(d->ifp)->pp_tlf = cx_tlf;
845 IFP2SP(d->ifp)->pp_tls = cx_tls;
846 /* If BPF is in the kernel, call the attach for it.
847 * Size of PPP header is 4 bytes. */
848 bpfattach (d->ifp, DLT_PPP, 4);
849 #endif /*NETGRAPH*/
850 }
851 d->tty = ttyalloc ();
852 d->tty->t_open = cx_topen;
853 d->tty->t_close = cx_tclose;
854 d->tty->t_param = cx_param;
855 d->tty->t_stop = cx_stop;
856 d->tty->t_modem = cx_tmodem;
857 d->tty->t_oproc = cx_oproc;
858 d->tty->t_sc = d;
859 CX_LOCK (bd);
860 cx_start_chan (c, d->dmamem.virt, d->dmamem.phys);
861 cx_register_receive (c, &cx_receive);
862 cx_register_transmit (c, &cx_transmit);
863 cx_register_error (c, &cx_error);
864 cx_register_modem (c, &cx_modem);
865 CX_UNLOCK (bd);
866
867 ttycreate(d->tty, TS_CALLOUT, "x%r%r", b->num, c->num);
868 d->devt = make_dev (&cx_cdevsw, b->num*NCHAN + c->num + 64, UID_ROOT, GID_WHEEL, 0600, "cx%d", b->num*NCHAN + c->num);
869 d->devt->si_drv1 = d;
870 callout_init (&d->dcd_timeout_handle, 1);
871 }
872 splx (s);
873
874 return 0;
875 }
876
cx_detach(device_t dev)877 static int cx_detach (device_t dev)
878 {
879 bdrv_t *bd = device_get_softc (dev);
880 cx_board_t *b = bd->board;
881 cx_chan_t *c;
882 int s;
883
884 KASSERT (mtx_initialized (&bd->cx_mtx), ("cx mutex not initialized"));
885
886 s = splhigh ();
887 CX_LOCK (bd);
888 /* Check if the device is busy (open). */
889 for (c = b->chan; c < b->chan + NCHAN; ++c) {
890 drv_t *d = (drv_t*) c->sys;
891
892 if (!d || d->chan->type == T_NONE)
893 continue;
894 if (d->lock) {
895 CX_UNLOCK (bd);
896 splx (s);
897 return EBUSY;
898 }
899 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
900 (d->open_dev|0x2)) {
901 CX_UNLOCK (bd);
902 splx (s);
903 return EBUSY;
904 }
905 if (d->running) {
906 CX_UNLOCK (bd);
907 splx (s);
908 return EBUSY;
909 }
910 }
911
912 /* Deactivate the timeout routine. And soft interrupt*/
913 callout_stop (&led_timo[b->num]);
914
915 for (c = b->chan; c < b->chan + NCHAN; ++c) {
916 drv_t *d = c->sys;
917
918 if (!d || d->chan->type == T_NONE)
919 continue;
920
921 callout_stop (&d->dcd_timeout_handle);
922 }
923 CX_UNLOCK (bd);
924 bus_teardown_intr (dev, bd->irq_res, bd->intrhand);
925 bus_release_resource (dev, SYS_RES_IRQ, bd->irq_rid, bd->irq_res);
926
927 bus_release_resource (dev, SYS_RES_DRQ, bd->drq_rid, bd->drq_res);
928
929 bus_release_resource (dev, SYS_RES_IOPORT, bd->base_rid, bd->base_res);
930
931 CX_LOCK (bd);
932 cx_close_board (b);
933
934 /* Detach the interfaces, free buffer memory. */
935 for (c = b->chan; c < b->chan + NCHAN; ++c) {
936 drv_t *d = (drv_t*) c->sys;
937
938 if (!d || d->chan->type == T_NONE)
939 continue;
940
941 if (d->tty) {
942 ttyfree (d->tty);
943 d->tty = NULL;
944 }
945
946 callout_stop (&d->timeout_handle);
947 #ifdef NETGRAPH
948 if (d->node) {
949 ng_rmnode_self (d->node);
950 NG_NODE_UNREF (d->node);
951 d->node = NULL;
952 }
953 mtx_destroy (&d->lo_queue.ifq_mtx);
954 mtx_destroy (&d->hi_queue.ifq_mtx);
955 #else
956 /* Detach from the packet filter list of interfaces. */
957 bpfdetach (d->ifp);
958 /* Detach from the sync PPP list. */
959 sppp_detach (d->ifp);
960
961 if_detach (d->ifp);
962 if_free(d->ifp);
963 /* XXXRIK: check interconnection with irq handler */
964 IF_DRAIN (&d->queue);
965 mtx_destroy (&d->queue.ifq_mtx);
966 #endif
967 destroy_dev (d->devt);
968 }
969
970 cx_led_off (b);
971 CX_UNLOCK (bd);
972 callout_drain (&led_timo[b->num]);
973 for (c = b->chan; c < b->chan + NCHAN; ++c) {
974 drv_t *d = c->sys;
975
976 if (!d || d->chan->type == T_NONE)
977 continue;
978
979 callout_drain (&d->dcd_timeout_handle);
980 callout_drain (&d->timeout_handle);
981 }
982 splx (s);
983
984 s = splhigh ();
985 for (c = b->chan; c < b->chan + NCHAN; ++c) {
986 drv_t *d = (drv_t*) c->sys;
987
988 if (!d || d->chan->type == T_NONE)
989 continue;
990
991 /* Deallocate buffers. */
992 cx_bus_dma_mem_free (&d->dmamem);
993 }
994 bd->board = NULL;
995 adapter [b->num] = NULL;
996 free (b, M_DEVBUF);
997 splx (s);
998
999 mtx_destroy (&bd->cx_mtx);
1000
1001 return 0;
1002 }
1003
1004 #ifndef NETGRAPH
cx_ifstart(struct ifnet * ifp)1005 static void cx_ifstart (struct ifnet *ifp)
1006 {
1007 drv_t *d = ifp->if_softc;
1008 bdrv_t *bd = d->board->sys;
1009
1010 CX_LOCK (bd);
1011 cx_start (d);
1012 CX_UNLOCK (bd);
1013 }
1014
cx_tlf(struct sppp * sp)1015 static void cx_tlf (struct sppp *sp)
1016 {
1017 drv_t *d = SP2IFP(sp)->if_softc;
1018
1019 CX_DEBUG (d, ("cx_tlf\n"));
1020 /* cx_set_dtr (d->chan, 0);*/
1021 /* cx_set_rts (d->chan, 0);*/
1022 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO))
1023 sp->pp_down (sp);
1024 }
1025
cx_tls(struct sppp * sp)1026 static void cx_tls (struct sppp *sp)
1027 {
1028 drv_t *d = SP2IFP(sp)->if_softc;
1029
1030 CX_DEBUG (d, ("cx_tls\n"));
1031 if (!(IFP2SP(d->ifp)->pp_flags & PP_FR) && !(d->ifp->if_flags & PP_CISCO))
1032 sp->pp_up (sp);
1033 }
1034
1035 /*
1036 * Initialization of interface.
1037 * It seems to be never called by upper level.
1038 */
cx_initialize(void * softc)1039 static void cx_initialize (void *softc)
1040 {
1041 drv_t *d = softc;
1042
1043 CX_DEBUG (d, ("cx_initialize\n"));
1044 }
1045
1046 /*
1047 * Process an ioctl request.
1048 */
cx_sioctl(struct ifnet * ifp,u_long cmd,caddr_t data)1049 static int cx_sioctl (struct ifnet *ifp, u_long cmd, caddr_t data)
1050 {
1051 drv_t *d = ifp->if_softc;
1052 bdrv_t *bd = d->board->sys;
1053 int error, s, was_up, should_be_up;
1054
1055 /* No socket ioctls while the channel is in async mode. */
1056 if (d->chan->type == T_NONE || d->chan->mode == M_ASYNC)
1057 return EBUSY;
1058
1059 /* Socket ioctls on slave subchannels are not allowed. */
1060 was_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
1061 error = sppp_ioctl (ifp, cmd, data);
1062 if (error)
1063 return error;
1064
1065 s = splhigh ();
1066 CX_LOCK (bd);
1067 if (! (ifp->if_flags & IFF_DEBUG))
1068 d->chan->debug = 0;
1069 else
1070 d->chan->debug = d->chan->debug_shadow;
1071 CX_UNLOCK (bd);
1072 splx (s);
1073
1074 switch (cmd) {
1075 default: CX_DEBUG2 (d, ("ioctl 0x%lx\n", cmd)); return 0;
1076 case SIOCADDMULTI: CX_DEBUG2 (d, ("SIOCADDMULTI\n")); return 0;
1077 case SIOCDELMULTI: CX_DEBUG2 (d, ("SIOCDELMULTI\n")); return 0;
1078 case SIOCSIFFLAGS: CX_DEBUG2 (d, ("SIOCSIFFLAGS\n")); break;
1079 case SIOCSIFADDR: CX_DEBUG2 (d, ("SIOCSIFADDR\n")); break;
1080 }
1081
1082 /* We get here only in case of SIFFLAGS or SIFADDR. */
1083 s = splhigh ();
1084 CX_LOCK (bd);
1085 should_be_up = (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;
1086 if (!was_up && should_be_up) {
1087 /* Interface goes up -- start it. */
1088 cx_up (d);
1089 cx_start (d);
1090 } else if (was_up && !should_be_up) {
1091 /* Interface is going down -- stop it. */
1092 /* if ((IFP2SP(d->ifp)->pp_flags & PP_FR) || (ifp->if_flags & PP_CISCO))*/
1093 cx_down (d);
1094 }
1095 CX_UNLOCK (bd);
1096 splx (s);
1097 return 0;
1098 }
1099 #endif /*NETGRAPH*/
1100
1101 /*
1102 * Stop the interface. Called on splimp().
1103 */
cx_down(drv_t * d)1104 static void cx_down (drv_t *d)
1105 {
1106 int s = splhigh ();
1107 CX_DEBUG (d, ("cx_down\n"));
1108 cx_set_dtr (d->chan, 0);
1109 cx_set_rts (d->chan, 0);
1110 d->running = 0;
1111 callout_stop (&d->timeout_handle);
1112 splx (s);
1113 }
1114
1115 /*
1116 * Start the interface. Called on splimp().
1117 */
cx_up(drv_t * d)1118 static void cx_up (drv_t *d)
1119 {
1120 int s = splhigh ();
1121 CX_DEBUG (d, ("cx_up\n"));
1122 cx_set_dtr (d->chan, 1);
1123 cx_set_rts (d->chan, 1);
1124 d->running = 1;
1125 splx (s);
1126 }
1127
1128 /*
1129 * Start output on the (slave) interface. Get another datagram to send
1130 * off of the interface queue, and copy it to the interface
1131 * before starting the output.
1132 */
cx_send(drv_t * d)1133 static void cx_send (drv_t *d)
1134 {
1135 struct mbuf *m;
1136 u_short len;
1137
1138 CX_DEBUG2 (d, ("cx_send\n"));
1139
1140 /* No output if the interface is down. */
1141 if (! d->running)
1142 return;
1143
1144 /* No output if the modem is off. */
1145 if (! cx_get_dsr (d->chan) && ! cx_get_loop(d->chan))
1146 return;
1147
1148 if (cx_buf_free (d->chan)) {
1149 /* Get the packet to send. */
1150 #ifdef NETGRAPH
1151 IF_DEQUEUE (&d->hi_queue, m);
1152 if (! m)
1153 IF_DEQUEUE (&d->lo_queue, m);
1154 #else
1155 m = sppp_dequeue (d->ifp);
1156 #endif
1157 if (! m)
1158 return;
1159 #ifndef NETGRAPH
1160 BPF_MTAP (d->ifp, m);
1161 #endif
1162 len = m_length (m, NULL);
1163 if (! m->m_next)
1164 cx_send_packet (d->chan, (u_char*)mtod (m, caddr_t),
1165 len, 0);
1166 else {
1167 u_char buf [DMABUFSZ];
1168 m_copydata (m, 0, len, buf);
1169 cx_send_packet (d->chan, buf, len, 0);
1170 }
1171 m_freem (m);
1172
1173 /* Set up transmit timeout, 10 seconds. */
1174 d->timeout = 10;
1175 }
1176 #ifndef NETGRAPH
1177 d->ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1178 #endif
1179 }
1180
1181 /*
1182 * Start output on the interface.
1183 * Always called on splimp().
1184 */
cx_start(drv_t * d)1185 static void cx_start (drv_t *d)
1186 {
1187 int s = splhigh ();
1188 if (d->running) {
1189 if (! d->chan->dtr)
1190 cx_set_dtr (d->chan, 1);
1191 if (! d->chan->rts)
1192 cx_set_rts (d->chan, 1);
1193 cx_send (d);
1194 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
1195 }
1196 splx (s);
1197 }
1198
1199 /*
1200 * Handle transmit timeouts.
1201 * Recover after lost transmit interrupts.
1202 * Always called on splimp().
1203 */
cx_watchdog(drv_t * d)1204 static void cx_watchdog (drv_t *d)
1205 {
1206
1207 CX_DEBUG (d, ("device timeout\n"));
1208 if (d->running) {
1209 cx_setup_chan (d->chan);
1210 cx_start_chan (d->chan, 0, 0);
1211 cx_set_dtr (d->chan, 1);
1212 cx_set_rts (d->chan, 1);
1213 cx_start (d);
1214 }
1215 }
1216
cx_watchdog_timer(void * arg)1217 static void cx_watchdog_timer (void *arg)
1218 {
1219 drv_t *d = arg;
1220 bdrv_t *bd = d->board->sys;
1221
1222 CX_LOCK (bd);
1223 if (d->timeout == 1)
1224 cx_watchdog (d);
1225 if (d->timeout)
1226 d->timeout--;
1227 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
1228 CX_UNLOCK (bd);
1229 }
1230
1231 /*
1232 * Transmit callback function.
1233 */
cx_transmit(cx_chan_t * c,void * attachment,int len)1234 static void cx_transmit (cx_chan_t *c, void *attachment, int len)
1235 {
1236 drv_t *d = c->sys;
1237
1238 if (!d)
1239 return;
1240
1241 if (c->mode == M_ASYNC && d->tty) {
1242 d->tty->t_state &= ~(TS_BUSY | TS_FLUSH);
1243 d->atimeout = 0;
1244 if (d->tty->t_dev) {
1245 d->intr_action |= CX_WRITE;
1246 MY_SOFT_INTR = 1;
1247 swi_sched (cx_fast_ih, 0);
1248 }
1249 return;
1250 }
1251 d->timeout = 0;
1252 #ifndef NETGRAPH
1253 if_inc_counter(d->ifp, IFCOUNTER_OPACKETS, 1);
1254 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1255 #endif
1256 cx_start (d);
1257 }
1258
1259 /*
1260 * Process the received packet.
1261 */
cx_receive(cx_chan_t * c,char * data,int len)1262 static void cx_receive (cx_chan_t *c, char *data, int len)
1263 {
1264 drv_t *d = c->sys;
1265 struct mbuf *m;
1266 char *cc = data;
1267 #ifdef NETGRAPH
1268 int error;
1269 #endif
1270
1271 if (!d)
1272 return;
1273
1274 if (c->mode == M_ASYNC && d->tty) {
1275 if (d->tty->t_state & TS_ISOPEN) {
1276 async_q *q = &d->aqueue;
1277 int size = BF_SZ - 1 - AQ_GSZ (q);
1278
1279 if (len <= 0 && !size)
1280 return;
1281
1282 if (len > size) {
1283 c->ierrs++;
1284 cx_error (c, CX_OVERRUN);
1285 len = size - 1;
1286 }
1287
1288 while (len--) {
1289 AQ_PUSH (q, *(unsigned char *)cc);
1290 cc++;
1291 }
1292
1293 d->intr_action |= CX_READ;
1294 MY_SOFT_INTR = 1;
1295 swi_sched (cx_fast_ih, 0);
1296 }
1297 return;
1298 }
1299 if (! d->running)
1300 return;
1301
1302 m = makembuf (data, len);
1303 if (! m) {
1304 CX_DEBUG (d, ("no memory for packet\n"));
1305 #ifndef NETGRAPH
1306 if_inc_counter(d->ifp, IFCOUNTER_IQDROPS, 1);
1307 #endif
1308 return;
1309 }
1310 if (c->debug > 1)
1311 m_print (m, 0);
1312 #ifdef NETGRAPH
1313 m->m_pkthdr.rcvif = 0;
1314 NG_SEND_DATA_ONLY (error, d->hook, m);
1315 #else
1316 if_inc_counter(d->ifp, IFCOUNTER_IPACKETS, 1);
1317 m->m_pkthdr.rcvif = d->ifp;
1318 /* Check if there's a BPF listener on this interface.
1319 * If so, hand off the raw packet to bpf. */
1320 BPF_MTAP(d->ifp, m);
1321 IF_ENQUEUE (&d->queue, m);
1322 #endif
1323 }
1324
1325 #define CONDITION(t,tp) (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))\
1326 && (!(tp->t_iflag & BRKINT) || (tp->t_iflag & IGNBRK))\
1327 && (!(tp->t_iflag & PARMRK)\
1328 || (tp->t_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))\
1329 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))\
1330 && linesw[tp->t_line]->l_rint == ttyinput)
1331
1332 /*
1333 * Error callback function.
1334 */
cx_error(cx_chan_t * c,int data)1335 static void cx_error (cx_chan_t *c, int data)
1336 {
1337 drv_t *d = c->sys;
1338 async_q *q;
1339
1340 if (!d)
1341 return;
1342
1343 q = &(d->aqueue);
1344
1345 switch (data) {
1346 case CX_FRAME:
1347 CX_DEBUG (d, ("frame error\n"));
1348 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1349 && (AQ_GSZ (q) < BF_SZ - 1)
1350 && (!CONDITION((&d->tty->t_termios), (d->tty))
1351 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1352 AQ_PUSH (q, TTY_FE);
1353 d->intr_action |= CX_READ;
1354 MY_SOFT_INTR = 1;
1355 swi_sched (cx_fast_ih, 0);
1356 }
1357 #ifndef NETGRAPH
1358 else
1359 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1);
1360 #endif
1361 break;
1362 case CX_CRC:
1363 CX_DEBUG (d, ("crc error\n"));
1364 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1365 && (AQ_GSZ (q) < BF_SZ - 1)
1366 && (!CONDITION((&d->tty->t_termios), (d->tty))
1367 || !(d->tty->t_iflag & INPCK)
1368 || !(d->tty->t_iflag & (IGNPAR | PARMRK)))) {
1369 AQ_PUSH (q, TTY_PE);
1370 d->intr_action |= CX_READ;
1371 MY_SOFT_INTR = 1;
1372 swi_sched (cx_fast_ih, 0);
1373 }
1374 #ifndef NETGRAPH
1375 else
1376 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1);
1377 #endif
1378 break;
1379 case CX_OVERRUN:
1380 CX_DEBUG (d, ("overrun error\n"));
1381 #ifdef TTY_OE
1382 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1383 && (AQ_GSZ (q) < BF_SZ - 1)
1384 && (!CONDITION((&d->tty->t_termios), (d->tty)))) {
1385 AQ_PUSH (q, TTY_OE);
1386 d->intr_action |= CX_READ;
1387 MY_SOFT_INTR = 1;
1388 swi_sched (cx_fast_ih, 0);
1389 }
1390 #endif
1391 #ifndef NETGRAPH
1392 else {
1393 if_inc_counter(d->ifp, IFCOUNTER_COLLISIONS, 1);
1394 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1);
1395 }
1396 #endif
1397 break;
1398 case CX_OVERFLOW:
1399 CX_DEBUG (d, ("overflow error\n"));
1400 #ifndef NETGRAPH
1401 if (c->mode != M_ASYNC)
1402 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1);
1403 #endif
1404 break;
1405 case CX_UNDERRUN:
1406 CX_DEBUG (d, ("underrun error\n"));
1407 if (c->mode != M_ASYNC) {
1408 d->timeout = 0;
1409 #ifndef NETGRAPH
1410 if_inc_counter(d->ifp, IFCOUNTER_OERRORS, 1);
1411 d->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1412 #endif
1413 cx_start (d);
1414 }
1415 break;
1416 case CX_BREAK:
1417 CX_DEBUG (d, ("break error\n"));
1418 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN)
1419 && (AQ_GSZ (q) < BF_SZ - 1)
1420 && (!CONDITION((&d->tty->t_termios), (d->tty))
1421 || !(d->tty->t_iflag & (IGNBRK | BRKINT | PARMRK)))) {
1422 AQ_PUSH (q, TTY_BI);
1423 d->intr_action |= CX_READ;
1424 MY_SOFT_INTR = 1;
1425 swi_sched (cx_fast_ih, 0);
1426 }
1427 #ifndef NETGRAPH
1428 else
1429 if_inc_counter(d->ifp, IFCOUNTER_IERRORS, 1);
1430 #endif
1431 break;
1432 default:
1433 CX_DEBUG (d, ("error #%d\n", data));
1434 }
1435 }
1436
cx_topen(struct tty * tp,struct cdev * dev)1437 static int cx_topen (struct tty *tp, struct cdev *dev)
1438 {
1439 bdrv_t *bd;
1440 drv_t *d;
1441
1442 d = tp->t_sc;
1443 CX_DEBUG2 (d, ("cx_open (serial)\n"));
1444
1445 bd = d->board->sys;
1446
1447 if (d->chan->mode != M_ASYNC)
1448 return (EBUSY);
1449
1450 d->open_dev |= 0x2;
1451 CX_LOCK (bd);
1452 cx_start_chan (d->chan, 0, 0);
1453 cx_set_dtr (d->chan, 1);
1454 cx_set_rts (d->chan, 1);
1455 d->cd = cx_get_cd (d->chan);
1456 CX_UNLOCK (bd);
1457
1458 CX_DEBUG2 (d, ("cx_open done\n"));
1459
1460 return 0;
1461 }
1462
cx_tclose(struct tty * tp)1463 static void cx_tclose (struct tty *tp)
1464 {
1465 drv_t *d;
1466 bdrv_t *bd;
1467
1468 d = tp->t_sc;
1469 CX_DEBUG2 (d, ("cx_close\n"));
1470 bd = d->board->sys;
1471 CX_LOCK (bd);
1472 /* Disable receiver.
1473 * Transmitter continues sending the queued data. */
1474 cx_enable_receive (d->chan, 0);
1475 CX_UNLOCK (bd);
1476 d->open_dev &= ~0x2;
1477 }
1478
cx_tmodem(struct tty * tp,int sigon,int sigoff)1479 static int cx_tmodem (struct tty *tp, int sigon, int sigoff)
1480 {
1481 drv_t *d;
1482 bdrv_t *bd;
1483
1484 d = tp->t_sc;
1485 bd = d->board->sys;
1486
1487 CX_LOCK (bd);
1488 if (!sigon && !sigoff) {
1489 if (cx_get_dsr (d->chan)) sigon |= SER_DSR;
1490 if (cx_get_cd (d->chan)) sigon |= SER_DCD;
1491 if (cx_get_cts (d->chan)) sigon |= SER_CTS;
1492 if (d->chan->dtr) sigon |= SER_DTR;
1493 if (d->chan->rts) sigon |= SER_RTS;
1494 CX_UNLOCK (bd);
1495 return sigon;
1496 }
1497
1498 if (sigon & SER_DTR)
1499 cx_set_dtr (d->chan, 1);
1500 if (sigoff & SER_DTR)
1501 cx_set_dtr (d->chan, 0);
1502 if (sigon & SER_RTS)
1503 cx_set_rts (d->chan, 1);
1504 if (sigoff & SER_RTS)
1505 cx_set_rts (d->chan, 0);
1506 CX_UNLOCK (bd);
1507
1508 return (0);
1509 }
1510
cx_open(struct cdev * dev,int flag,int mode,struct thread * td)1511 static int cx_open (struct cdev *dev, int flag, int mode, struct thread *td)
1512 {
1513 int unit;
1514 drv_t *d;
1515
1516 d = dev->si_drv1;
1517 unit = d->chan->num;
1518
1519 CX_DEBUG2 (d, ("cx_open unit=%d, flag=0x%x, mode=0x%x\n",
1520 unit, flag, mode));
1521
1522 d->open_dev |= 0x1;
1523
1524 CX_DEBUG2 (d, ("cx_open done\n"));
1525
1526 return 0;
1527 }
1528
cx_close(struct cdev * dev,int flag,int mode,struct thread * td)1529 static int cx_close (struct cdev *dev, int flag, int mode, struct thread *td)
1530 {
1531 drv_t *d;
1532
1533 d = dev->si_drv1;
1534 CX_DEBUG2 (d, ("cx_close\n"));
1535 d->open_dev &= ~0x1;
1536 return 0;
1537 }
1538
cx_modem_status(drv_t * d)1539 static int cx_modem_status (drv_t *d)
1540 {
1541 bdrv_t *bd = d->board->sys;
1542 int status = 0, s = splhigh ();
1543 CX_LOCK (bd);
1544 /* Already opened by someone or network interface is up? */
1545 if ((d->chan->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1546 (d->open_dev|0x2)) || (d->chan->mode != M_ASYNC && d->running))
1547 status = TIOCM_LE; /* always enabled while open */
1548
1549 if (cx_get_dsr (d->chan)) status |= TIOCM_DSR;
1550 if (cx_get_cd (d->chan)) status |= TIOCM_CD;
1551 if (cx_get_cts (d->chan)) status |= TIOCM_CTS;
1552 if (d->chan->dtr) status |= TIOCM_DTR;
1553 if (d->chan->rts) status |= TIOCM_RTS;
1554 CX_UNLOCK (bd);
1555 splx (s);
1556 return status;
1557 }
1558
cx_ioctl(struct cdev * dev,u_long cmd,caddr_t data,int flag,struct thread * td)1559 static int cx_ioctl (struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1560 {
1561 drv_t *d;
1562 bdrv_t *bd;
1563 cx_chan_t *c;
1564 struct serial_statistics *st;
1565 int error, s;
1566 char mask[16];
1567
1568 d = dev->si_drv1;
1569 c = d->chan;
1570
1571 bd = d->board->sys;
1572
1573 switch (cmd) {
1574 case SERIAL_GETREGISTERED:
1575 CX_DEBUG2 (d, ("ioctl: getregistered\n"));
1576 bzero (mask, sizeof(mask));
1577 for (s=0; s<NCX*NCHAN; ++s)
1578 if (channel [s])
1579 mask [s/8] |= 1 << (s & 7);
1580 bcopy (mask, data, sizeof (mask));
1581 return 0;
1582
1583 case SERIAL_GETPORT:
1584 CX_DEBUG2 (d, ("ioctl: getport\n"));
1585 s = splhigh ();
1586 CX_LOCK (bd);
1587 *(int *)data = cx_get_port (c);
1588 CX_UNLOCK (bd);
1589 splx (s);
1590 if (*(int *)data<0)
1591 return (EINVAL);
1592 else
1593 return 0;
1594
1595 case SERIAL_SETPORT:
1596 CX_DEBUG2 (d, ("ioctl: setproto\n"));
1597 /* Only for superuser! */
1598 error = priv_check (td, PRIV_DRIVER);
1599 if (error)
1600 return error;
1601
1602 s = splhigh ();
1603 CX_LOCK (bd);
1604 cx_set_port (c, *(int *)data);
1605 CX_UNLOCK (bd);
1606 splx (s);
1607 return 0;
1608
1609 #ifndef NETGRAPH
1610 case SERIAL_GETPROTO:
1611 CX_DEBUG2 (d, ("ioctl: getproto\n"));
1612 s = splhigh ();
1613 CX_LOCK (bd);
1614 strcpy ((char*)data, (c->mode == M_ASYNC) ? "async" :
1615 (IFP2SP(d->ifp)->pp_flags & PP_FR) ? "fr" :
1616 (d->ifp->if_flags & PP_CISCO) ? "cisco" : "ppp");
1617 CX_UNLOCK (bd);
1618 splx (s);
1619 return 0;
1620
1621 case SERIAL_SETPROTO:
1622 CX_DEBUG2 (d, ("ioctl: setproto\n"));
1623 /* Only for superuser! */
1624 error = priv_check (td, PRIV_DRIVER);
1625 if (error)
1626 return error;
1627 if (c->mode == M_ASYNC)
1628 return EBUSY;
1629 if (d->ifp->if_drv_flags & IFF_DRV_RUNNING)
1630 return EBUSY;
1631 if (! strcmp ("cisco", (char*)data)) {
1632 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR);
1633 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE;
1634 d->ifp->if_flags |= PP_CISCO;
1635 } else if (! strcmp ("fr", (char*)data)) {
1636 d->ifp->if_flags &= ~(PP_CISCO);
1637 IFP2SP(d->ifp)->pp_flags |= PP_FR | PP_KEEPALIVE;
1638 } else if (! strcmp ("ppp", (char*)data)) {
1639 IFP2SP(d->ifp)->pp_flags &= ~(PP_FR | PP_KEEPALIVE);
1640 d->ifp->if_flags &= ~(PP_CISCO);
1641 } else
1642 return EINVAL;
1643 return 0;
1644
1645 case SERIAL_GETKEEPALIVE:
1646 CX_DEBUG2 (d, ("ioctl: getkeepalive\n"));
1647 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) ||
1648 (d->ifp->if_flags & PP_CISCO) ||
1649 (c->mode == M_ASYNC))
1650 return EINVAL;
1651 s = splhigh ();
1652 CX_LOCK (bd);
1653 *(int*)data = (IFP2SP(d->ifp)->pp_flags & PP_KEEPALIVE) ? 1 : 0;
1654 CX_UNLOCK (bd);
1655 splx (s);
1656 return 0;
1657
1658 case SERIAL_SETKEEPALIVE:
1659 CX_DEBUG2 (d, ("ioctl: setkeepalive\n"));
1660 /* Only for superuser! */
1661 error = priv_check (td, PRIV_DRIVER);
1662 if (error)
1663 return error;
1664 if ((IFP2SP(d->ifp)->pp_flags & PP_FR) ||
1665 (d->ifp->if_flags & PP_CISCO))
1666 return EINVAL;
1667 s = splhigh ();
1668 CX_LOCK (bd);
1669 if (*(int*)data)
1670 IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE;
1671 else
1672 IFP2SP(d->ifp)->pp_flags &= ~PP_KEEPALIVE;
1673 CX_UNLOCK (bd);
1674 splx (s);
1675 return 0;
1676 #endif /*NETGRAPH*/
1677
1678 case SERIAL_GETMODE:
1679 CX_DEBUG2 (d, ("ioctl: getmode\n"));
1680 s = splhigh ();
1681 CX_LOCK (bd);
1682 *(int*)data = (c->mode == M_ASYNC) ?
1683 SERIAL_ASYNC : SERIAL_HDLC;
1684 CX_UNLOCK (bd);
1685 splx (s);
1686 return 0;
1687
1688 case SERIAL_SETMODE:
1689 CX_DEBUG2 (d, ("ioctl: setmode\n"));
1690 /* Only for superuser! */
1691 error = priv_check (td, PRIV_DRIVER);
1692 if (error)
1693 return error;
1694
1695 /* Somebody is waiting for carrier? */
1696 if (d->lock)
1697 return EBUSY;
1698 /* /dev/ttyXX is already opened by someone? */
1699 if (c->mode == M_ASYNC && d->tty && (d->tty->t_state & TS_ISOPEN) &&
1700 (d->open_dev|0x2))
1701 return EBUSY;
1702 /* Network interface is up?
1703 * Cannot change to async mode. */
1704 if (c->mode != M_ASYNC && d->running &&
1705 (*(int*)data == SERIAL_ASYNC))
1706 return EBUSY;
1707
1708 s = splhigh ();
1709 CX_LOCK (bd);
1710 if (c->mode == M_HDLC && *(int*)data == SERIAL_ASYNC) {
1711 cx_set_mode (c, M_ASYNC);
1712 cx_enable_receive (c, 0);
1713 cx_enable_transmit (c, 0);
1714 } else if (c->mode == M_ASYNC && *(int*)data == SERIAL_HDLC) {
1715 if (d->ifp->if_flags & IFF_DEBUG)
1716 c->debug = c->debug_shadow;
1717 cx_set_mode (c, M_HDLC);
1718 cx_enable_receive (c, 1);
1719 cx_enable_transmit (c, 1);
1720 }
1721 CX_UNLOCK (bd);
1722 splx (s);
1723 return 0;
1724
1725 case SERIAL_GETSTAT:
1726 CX_DEBUG2 (d, ("ioctl: getestat\n"));
1727 st = (struct serial_statistics*) data;
1728 s = splhigh ();
1729 CX_LOCK (bd);
1730 st->rintr = c->rintr;
1731 st->tintr = c->tintr;
1732 st->mintr = c->mintr;
1733 st->ibytes = c->ibytes;
1734 st->ipkts = c->ipkts;
1735 st->ierrs = c->ierrs;
1736 st->obytes = c->obytes;
1737 st->opkts = c->opkts;
1738 st->oerrs = c->oerrs;
1739 CX_UNLOCK (bd);
1740 splx (s);
1741 return 0;
1742
1743 case SERIAL_CLRSTAT:
1744 CX_DEBUG2 (d, ("ioctl: clrstat\n"));
1745 /* Only for superuser! */
1746 error = priv_check (td, PRIV_DRIVER);
1747 if (error)
1748 return error;
1749 s = splhigh ();
1750 CX_LOCK (bd);
1751 c->rintr = 0;
1752 c->tintr = 0;
1753 c->mintr = 0;
1754 c->ibytes = 0;
1755 c->ipkts = 0;
1756 c->ierrs = 0;
1757 c->obytes = 0;
1758 c->opkts = 0;
1759 c->oerrs = 0;
1760 CX_UNLOCK (bd);
1761 splx (s);
1762 return 0;
1763
1764 case SERIAL_GETBAUD:
1765 CX_DEBUG2 (d, ("ioctl: getbaud\n"));
1766 if (c->mode == M_ASYNC)
1767 return EINVAL;
1768 s = splhigh ();
1769 CX_LOCK (bd);
1770 *(long*)data = cx_get_baud(c);
1771 CX_UNLOCK (bd);
1772 splx (s);
1773 return 0;
1774
1775 case SERIAL_SETBAUD:
1776 CX_DEBUG2 (d, ("ioctl: setbaud\n"));
1777 /* Only for superuser! */
1778 error = priv_check (td, PRIV_DRIVER);
1779 if (error)
1780 return error;
1781 if (c->mode == M_ASYNC)
1782 return EINVAL;
1783 s = splhigh ();
1784 CX_LOCK (bd);
1785 cx_set_baud (c, *(long*)data);
1786 CX_UNLOCK (bd);
1787 splx (s);
1788 return 0;
1789
1790 case SERIAL_GETLOOP:
1791 CX_DEBUG2 (d, ("ioctl: getloop\n"));
1792 if (c->mode == M_ASYNC)
1793 return EINVAL;
1794 s = splhigh ();
1795 CX_LOCK (bd);
1796 *(int*)data = cx_get_loop (c);
1797 CX_UNLOCK (bd);
1798 splx (s);
1799 return 0;
1800
1801 case SERIAL_SETLOOP:
1802 CX_DEBUG2 (d, ("ioctl: setloop\n"));
1803 /* Only for superuser! */
1804 error = priv_check (td, PRIV_DRIVER);
1805 if (error)
1806 return error;
1807 if (c->mode == M_ASYNC)
1808 return EINVAL;
1809 s = splhigh ();
1810 CX_LOCK (bd);
1811 cx_set_loop (c, *(int*)data);
1812 CX_UNLOCK (bd);
1813 splx (s);
1814 return 0;
1815
1816 case SERIAL_GETDPLL:
1817 CX_DEBUG2 (d, ("ioctl: getdpll\n"));
1818 if (c->mode == M_ASYNC)
1819 return EINVAL;
1820 s = splhigh ();
1821 CX_LOCK (bd);
1822 *(int*)data = cx_get_dpll (c);
1823 CX_UNLOCK (bd);
1824 splx (s);
1825 return 0;
1826
1827 case SERIAL_SETDPLL:
1828 CX_DEBUG2 (d, ("ioctl: setdpll\n"));
1829 /* Only for superuser! */
1830 error = priv_check (td, PRIV_DRIVER);
1831 if (error)
1832 return error;
1833 if (c->mode == M_ASYNC)
1834 return EINVAL;
1835 s = splhigh ();
1836 CX_LOCK (bd);
1837 cx_set_dpll (c, *(int*)data);
1838 CX_UNLOCK (bd);
1839 splx (s);
1840 return 0;
1841
1842 case SERIAL_GETNRZI:
1843 CX_DEBUG2 (d, ("ioctl: getnrzi\n"));
1844 if (c->mode == M_ASYNC)
1845 return EINVAL;
1846 s = splhigh ();
1847 CX_LOCK (bd);
1848 *(int*)data = cx_get_nrzi (c);
1849 CX_UNLOCK (bd);
1850 splx (s);
1851 return 0;
1852
1853 case SERIAL_SETNRZI:
1854 CX_DEBUG2 (d, ("ioctl: setnrzi\n"));
1855 /* Only for superuser! */
1856 error = priv_check (td, PRIV_DRIVER);
1857 if (error)
1858 return error;
1859 if (c->mode == M_ASYNC)
1860 return EINVAL;
1861 s = splhigh ();
1862 CX_LOCK (bd);
1863 cx_set_nrzi (c, *(int*)data);
1864 CX_UNLOCK (bd);
1865 splx (s);
1866 return 0;
1867
1868 case SERIAL_GETDEBUG:
1869 CX_DEBUG2 (d, ("ioctl: getdebug\n"));
1870 s = splhigh ();
1871 CX_LOCK (bd);
1872 *(int*)data = c->debug;
1873 CX_UNLOCK (bd);
1874 splx (s);
1875 return 0;
1876
1877 case SERIAL_SETDEBUG:
1878 CX_DEBUG2 (d, ("ioctl: setdebug\n"));
1879 /* Only for superuser! */
1880 error = priv_check (td, PRIV_DRIVER);
1881 if (error)
1882 return error;
1883 s = splhigh ();
1884 CX_LOCK (bd);
1885 #ifndef NETGRAPH
1886 if (c->mode == M_ASYNC) {
1887 c->debug = *(int*)data;
1888 } else {
1889 /*
1890 * The debug_shadow is always greater than zero for
1891 * logic simplicity. For switching debug off the
1892 * IFF_DEBUG is responsible (for !M_ASYNC mode).
1893 */
1894 c->debug_shadow = (*(int*)data) ? (*(int*)data) : 1;
1895 if (d->ifp->if_flags & IFF_DEBUG)
1896 c->debug = c->debug_shadow;
1897 }
1898 #else
1899 c->debug = *(int*)data;
1900 #endif
1901 CX_UNLOCK (bd);
1902 splx (s);
1903 return 0;
1904 }
1905
1906 switch (cmd) {
1907 case TIOCSDTR: /* Set DTR */
1908 CX_DEBUG2 (d, ("ioctl: tiocsdtr\n"));
1909 s = splhigh ();
1910 CX_LOCK (bd);
1911 cx_set_dtr (c, 1);
1912 CX_UNLOCK (bd);
1913 splx (s);
1914 return 0;
1915
1916 case TIOCCDTR: /* Clear DTR */
1917 CX_DEBUG2 (d, ("ioctl: tioccdtr\n"));
1918 s = splhigh ();
1919 CX_LOCK (bd);
1920 cx_set_dtr (c, 0);
1921 CX_UNLOCK (bd);
1922 splx (s);
1923 return 0;
1924
1925 case TIOCMSET: /* Set DTR/RTS */
1926 CX_DEBUG2 (d, ("ioctl: tiocmset\n"));
1927 s = splhigh ();
1928 CX_LOCK (bd);
1929 cx_set_dtr (c, (*(int*)data & TIOCM_DTR) ? 1 : 0);
1930 cx_set_rts (c, (*(int*)data & TIOCM_RTS) ? 1 : 0);
1931 CX_UNLOCK (bd);
1932 splx (s);
1933 return 0;
1934
1935 case TIOCMBIS: /* Add DTR/RTS */
1936 CX_DEBUG2 (d, ("ioctl: tiocmbis\n"));
1937 s = splhigh ();
1938 CX_LOCK (bd);
1939 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 1);
1940 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 1);
1941 CX_UNLOCK (bd);
1942 splx (s);
1943 return 0;
1944
1945 case TIOCMBIC: /* Clear DTR/RTS */
1946 CX_DEBUG2 (d, ("ioctl: tiocmbic\n"));
1947 s = splhigh ();
1948 CX_LOCK (bd);
1949 if (*(int*)data & TIOCM_DTR) cx_set_dtr (c, 0);
1950 if (*(int*)data & TIOCM_RTS) cx_set_rts (c, 0);
1951 CX_UNLOCK (bd);
1952 splx (s);
1953 return 0;
1954
1955 case TIOCMGET: /* Get modem status */
1956 CX_DEBUG2 (d, ("ioctl: tiocmget\n"));
1957 *(int*)data = cx_modem_status (d);
1958 return 0;
1959
1960 }
1961
1962 CX_DEBUG2 (d, ("ioctl: 0x%lx\n", cmd));
1963 return ENOTTY;
1964 }
1965
cx_softintr(void * unused)1966 void cx_softintr (void *unused)
1967 {
1968 drv_t *d;
1969 bdrv_t *bd;
1970 async_q *q;
1971 int i, s, ic, k;
1972 while (MY_SOFT_INTR) {
1973 MY_SOFT_INTR = 0;
1974 for (i=0; i<NCX*NCHAN; ++i) {
1975 d = channel [i];
1976 if (!d || !d->chan || d->chan->type == T_NONE
1977 || d->chan->mode != M_ASYNC || !d->tty
1978 || !d->tty->t_dev)
1979 continue;
1980 bd = d->board->sys;
1981 s = splhigh ();
1982 CX_LOCK (bd);
1983 if (d->intr_action & CX_READ) {
1984 q = &(d->aqueue);
1985 if (d->tty->t_state & TS_CAN_BYPASS_L_RINT) {
1986 k = AQ_GSZ(q);
1987 if (d->tty->t_rawq.c_cc + k >
1988 d->tty->t_ihiwat
1989 && (d->tty->t_cflag & CRTS_IFLOW
1990 || d->tty->t_iflag & IXOFF)
1991 && !(d->tty->t_state & TS_TBLOCK))
1992 ttyblock(d->tty);
1993 d->tty->t_rawcc += k;
1994 while (k>0) {
1995 k--;
1996 AQ_POP (q, ic);
1997 CX_UNLOCK (bd);
1998 splx (s);
1999 putc (ic, &d->tty->t_rawq);
2000 s = splhigh ();
2001 CX_LOCK (bd);
2002 }
2003 ttwakeup(d->tty);
2004 if (d->tty->t_state & TS_TTSTOP
2005 && (d->tty->t_iflag & IXANY
2006 || d->tty->t_cc[VSTART] ==
2007 d->tty->t_cc[VSTOP])) {
2008 d->tty->t_state &= ~TS_TTSTOP;
2009 d->tty->t_lflag &= ~FLUSHO;
2010 d->intr_action |= CX_WRITE;
2011 }
2012 } else {
2013 while (q->end != q->beg) {
2014 AQ_POP (q, ic);
2015 CX_UNLOCK (bd);
2016 splx (s);
2017 ttyld_rint (d->tty, ic);
2018 s = splhigh ();
2019 CX_LOCK (bd);
2020 }
2021 }
2022 d->intr_action &= ~CX_READ;
2023 }
2024 splx (s);
2025 CX_UNLOCK (bd);
2026
2027 s = splhigh ();
2028 CX_LOCK (bd);
2029 if (d->intr_action & CX_WRITE) {
2030 if (d->tty->t_line)
2031 ttyld_start (d->tty);
2032 else
2033 cx_oproc (d->tty);
2034 d->intr_action &= ~CX_WRITE;
2035 }
2036 CX_UNLOCK (bd);
2037 splx (s);
2038
2039 }
2040 }
2041 }
2042
2043 /*
2044 * Fill transmitter buffer with data.
2045 */
cx_oproc(struct tty * tp)2046 static void cx_oproc (struct tty *tp)
2047 {
2048 int s, k;
2049 drv_t *d;
2050 bdrv_t *bd;
2051 static u_char buf[DMABUFSZ];
2052 u_char *p;
2053 u_short len = 0, sublen = 0;
2054
2055 d = tp->t_sc;
2056 bd = d->board->sys;
2057
2058 CX_DEBUG2 (d, ("cx_oproc\n"));
2059
2060 s = splhigh ();
2061 CX_LOCK (bd);
2062
2063 if (tp->t_cflag & CRTSCTS && (tp->t_state & TS_TBLOCK) && d->chan->rts)
2064 cx_set_rts (d->chan, 0);
2065 else if (tp->t_cflag & CRTSCTS && ! (tp->t_state & TS_TBLOCK) && ! d->chan->rts)
2066 cx_set_rts (d->chan, 1);
2067
2068 if (! (tp->t_state & (TS_TIMEOUT | TS_TTSTOP))) {
2069 /* Start transmitter. */
2070 cx_enable_transmit (d->chan, 1);
2071
2072 /* Is it busy? */
2073 if (! cx_buf_free (d->chan)) {
2074 tp->t_state |= TS_BUSY;
2075 CX_UNLOCK (bd);
2076 splx (s);
2077 return;
2078 }
2079 if (tp->t_iflag & IXOFF) {
2080 p = (buf + (DMABUFSZ/2));
2081 sublen = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
2082 k = sublen;
2083 while (k--) {
2084 /* Send XON/XOFF out of band. */
2085 if (*p == tp->t_cc[VSTOP]) {
2086 cx_xflow_ctl (d->chan, 0);
2087 p++;
2088 continue;
2089 }
2090 if (*p == tp->t_cc[VSTART]) {
2091 cx_xflow_ctl (d->chan, 1);
2092 p++;
2093 continue;
2094 }
2095 buf[len] = *p;
2096 len++;
2097 p++;
2098 }
2099 } else {
2100 p = buf;
2101 len = q_to_b (&tp->t_outq, p, (DMABUFSZ/2));
2102 }
2103 if (len) {
2104 cx_send_packet (d->chan, buf, len, 0);
2105 tp->t_state |= TS_BUSY;
2106 d->atimeout = 10;
2107 CX_DEBUG2 (d, ("out %d bytes\n", len));
2108 }
2109 }
2110 ttwwakeup (tp);
2111 CX_UNLOCK (bd);
2112 splx (s);
2113 }
2114
cx_param(struct tty * tp,struct termios * t)2115 static int cx_param (struct tty *tp, struct termios *t)
2116 {
2117 drv_t *d;
2118 bdrv_t *bd;
2119 int s, bits, parity;
2120
2121 d = tp->t_sc;
2122 bd = d->board->sys;
2123
2124 s = splhigh ();
2125 CX_LOCK (bd);
2126 if (t->c_ospeed == 0) {
2127 /* Clear DTR and RTS. */
2128 cx_set_dtr (d->chan, 0);
2129 CX_UNLOCK (bd);
2130 splx (s);
2131 CX_DEBUG2 (d, ("cx_param (hangup)\n"));
2132 return 0;
2133 }
2134 CX_DEBUG2 (d, ("cx_param\n"));
2135
2136 /* Check requested parameters. */
2137 if (t->c_ospeed < 300 || t->c_ospeed > 256*1024) {
2138 CX_UNLOCK (bd);
2139 splx (s);
2140 return EINVAL;
2141 }
2142 if (t->c_ispeed && (t->c_ispeed < 300 || t->c_ispeed > 256*1024)) {
2143 CX_UNLOCK (bd);
2144 splx (s);
2145 return EINVAL;
2146 }
2147
2148 /* And copy them to tty and channel structures. */
2149 tp->t_ispeed = t->c_ispeed = tp->t_ospeed = t->c_ospeed;
2150 tp->t_cflag = t->c_cflag;
2151
2152 /* Set character length and parity mode. */
2153 switch (t->c_cflag & CSIZE) {
2154 default:
2155 case CS8: bits = 8; break;
2156 case CS7: bits = 7; break;
2157 case CS6: bits = 6; break;
2158 case CS5: bits = 5; break;
2159 }
2160
2161 parity = ((t->c_cflag & PARENB) ? 1 : 0) *
2162 (1 + ((t->c_cflag & PARODD) ? 0 : 1));
2163
2164 /* Set current channel number. */
2165 if (! d->chan->dtr)
2166 cx_set_dtr (d->chan, 1);
2167
2168 ttyldoptim (tp);
2169 cx_set_async_param (d->chan, t->c_ospeed, bits, parity, (t->c_cflag & CSTOPB),
2170 !(t->c_cflag & PARENB), (t->c_cflag & CRTSCTS),
2171 (t->c_iflag & IXON), (t->c_iflag & IXANY),
2172 t->c_cc[VSTART], t->c_cc[VSTOP]);
2173 CX_UNLOCK (bd);
2174 splx (s);
2175 return 0;
2176 }
2177
2178 /*
2179 * Stop output on a line
2180 */
cx_stop(struct tty * tp,int flag)2181 static void cx_stop (struct tty *tp, int flag)
2182 {
2183 drv_t *d;
2184 bdrv_t *bd;
2185 int s;
2186
2187 d = tp->t_sc;
2188 bd = d->board->sys;
2189
2190 s = splhigh ();
2191 CX_LOCK (bd);
2192 if (tp->t_state & TS_BUSY) {
2193 /* Stop transmitter */
2194 CX_DEBUG2 (d, ("cx_stop\n"));
2195 cx_transmitter_ctl (d->chan, 0);
2196 }
2197 CX_UNLOCK (bd);
2198 splx (s);
2199 }
2200
2201 /*
2202 * Process the (delayed) carrier signal setup.
2203 */
cx_carrier(void * arg)2204 static void cx_carrier (void *arg)
2205 {
2206 drv_t *d = arg;
2207 bdrv_t *bd = d->board->sys;
2208 cx_chan_t *c = d->chan;
2209 int s, cd;
2210
2211 s = splhigh ();
2212 CX_LOCK (bd);
2213 cd = cx_get_cd (c);
2214 if (d->cd != cd) {
2215 if (cd) {
2216 CX_DEBUG (d, ("carrier on\n"));
2217 d->cd = 1;
2218 CX_UNLOCK (bd);
2219 splx (s);
2220 if (d->tty)
2221 ttyld_modem(d->tty, 1);
2222 } else {
2223 CX_DEBUG (d, ("carrier loss\n"));
2224 d->cd = 0;
2225 CX_UNLOCK (bd);
2226 splx (s);
2227 if (d->tty)
2228 ttyld_modem(d->tty, 0);
2229 }
2230 } else {
2231 CX_UNLOCK (bd);
2232 splx (s);
2233 }
2234 }
2235
2236 /*
2237 * Modem signal callback function.
2238 */
cx_modem(cx_chan_t * c)2239 static void cx_modem (cx_chan_t *c)
2240 {
2241 drv_t *d = c->sys;
2242
2243 if (!d || c->mode != M_ASYNC)
2244 return;
2245 /* Handle carrier detect/loss. */
2246 /* Carrier changed - delay processing DCD for a while
2247 * to give both sides some time to initialize. */
2248 callout_reset (&d->dcd_timeout_handle, hz/2, cx_carrier, d);
2249 }
2250
2251 #ifdef NETGRAPH
ng_cx_constructor(node_p node)2252 static int ng_cx_constructor (node_p node)
2253 {
2254 drv_t *d = NG_NODE_PRIVATE (node);
2255 CX_DEBUG (d, ("Constructor\n"));
2256 return EINVAL;
2257 }
2258
ng_cx_newhook(node_p node,hook_p hook,const char * name)2259 static int ng_cx_newhook (node_p node, hook_p hook, const char *name)
2260 {
2261 int s;
2262 drv_t *d = NG_NODE_PRIVATE (node);
2263 bdrv_t *bd = d->board->sys;
2264
2265 if (d->chan->mode == M_ASYNC)
2266 return EINVAL;
2267
2268 /* Attach debug hook */
2269 if (strcmp (name, NG_CX_HOOK_DEBUG) == 0) {
2270 NG_HOOK_SET_PRIVATE (hook, NULL);
2271 d->debug_hook = hook;
2272 return 0;
2273 }
2274
2275 /* Check for raw hook */
2276 if (strcmp (name, NG_CX_HOOK_RAW) != 0)
2277 return EINVAL;
2278
2279 NG_HOOK_SET_PRIVATE (hook, d);
2280 d->hook = hook;
2281 s = splhigh ();
2282 CX_LOCK (bd);
2283 cx_up (d);
2284 CX_UNLOCK (bd);
2285 splx (s);
2286 return 0;
2287 }
2288
print_modems(char * s,cx_chan_t * c,int need_header)2289 static int print_modems (char *s, cx_chan_t *c, int need_header)
2290 {
2291 int status = cx_modem_status (c->sys);
2292 int length = 0;
2293
2294 if (need_header)
2295 length += sprintf (s + length, " LE DTR DSR RTS CTS CD\n");
2296 length += sprintf (s + length, "%4s %4s %4s %4s %4s %4s\n",
2297 status & TIOCM_LE ? "On" : "-",
2298 status & TIOCM_DTR ? "On" : "-",
2299 status & TIOCM_DSR ? "On" : "-",
2300 status & TIOCM_RTS ? "On" : "-",
2301 status & TIOCM_CTS ? "On" : "-",
2302 status & TIOCM_CD ? "On" : "-");
2303 return length;
2304 }
2305
print_stats(char * s,cx_chan_t * c,int need_header)2306 static int print_stats (char *s, cx_chan_t *c, int need_header)
2307 {
2308 int length = 0;
2309
2310 if (need_header)
2311 length += sprintf (s + length, " Rintr Tintr Mintr Ibytes Ipkts Ierrs Obytes Opkts Oerrs\n");
2312 length += sprintf (s + length, "%7ld %7ld %7ld %8ld %7ld %7ld %8ld %7ld %7ld\n",
2313 c->rintr, c->tintr, c->mintr, c->ibytes, c->ipkts,
2314 c->ierrs, c->obytes, c->opkts, c->oerrs);
2315 return length;
2316 }
2317
print_chan(char * s,cx_chan_t * c)2318 static int print_chan (char *s, cx_chan_t *c)
2319 {
2320 drv_t *d = c->sys;
2321 int length = 0;
2322
2323 length += sprintf (s + length, "cx%d", c->board->num * NCHAN + c->num);
2324 if (d->chan->debug)
2325 length += sprintf (s + length, " debug=%d", d->chan->debug);
2326
2327 if (cx_get_baud (c))
2328 length += sprintf (s + length, " %ld", cx_get_baud (c));
2329 else
2330 length += sprintf (s + length, " extclock");
2331
2332 if (c->mode == M_HDLC) {
2333 length += sprintf (s + length, " dpll=%s", cx_get_dpll (c) ? "on" : "off");
2334 length += sprintf (s + length, " nrzi=%s", cx_get_nrzi (c) ? "on" : "off");
2335 }
2336
2337 length += sprintf (s + length, " loop=%s", cx_get_loop (c) ? "on\n" : "off\n");
2338 return length;
2339 }
2340
ng_cx_rcvmsg(node_p node,item_p item,hook_p lasthook)2341 static int ng_cx_rcvmsg (node_p node, item_p item, hook_p lasthook)
2342 {
2343 drv_t *d = NG_NODE_PRIVATE (node);
2344 struct ng_mesg *msg;
2345 struct ng_mesg *resp = NULL;
2346 int error = 0;
2347
2348 if (!d)
2349 return EINVAL;
2350
2351 CX_DEBUG (d, ("Rcvmsg\n"));
2352 NGI_GET_MSG (item, msg);
2353 switch (msg->header.typecookie) {
2354 default:
2355 error = EINVAL;
2356 break;
2357
2358 case NGM_CX_COOKIE:
2359 printf ("Don't forget to implement\n");
2360 error = EINVAL;
2361 break;
2362
2363 case NGM_GENERIC_COOKIE:
2364 switch (msg->header.cmd) {
2365 default:
2366 error = EINVAL;
2367 break;
2368
2369 case NGM_TEXT_STATUS: {
2370 char *s;
2371 int l = 0;
2372 int dl = sizeof (struct ng_mesg) + 730;
2373
2374 NG_MKRESPONSE (resp, msg, dl, M_NOWAIT);
2375 if (! resp) {
2376 error = ENOMEM;
2377 break;
2378 }
2379 bzero (resp, dl);
2380 s = (resp)->data;
2381 l += print_chan (s + l, d->chan);
2382 l += print_stats (s + l, d->chan, 1);
2383 l += print_modems (s + l, d->chan, 1);
2384 strncpy ((resp)->header.cmdstr, "status", NG_CMDSTRSIZ);
2385 }
2386 break;
2387 }
2388 break;
2389 }
2390 NG_RESPOND_MSG (error, node, item, resp);
2391 NG_FREE_MSG (msg);
2392 return error;
2393 }
2394
ng_cx_rcvdata(hook_p hook,item_p item)2395 static int ng_cx_rcvdata (hook_p hook, item_p item)
2396 {
2397 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE(hook));
2398 struct mbuf *m;
2399 struct ng_tag_prio *ptag;
2400 bdrv_t *bd;
2401 struct ifqueue *q;
2402 int s;
2403
2404 NGI_GET_M (item, m);
2405 NG_FREE_ITEM (item);
2406 if (! NG_HOOK_PRIVATE (hook) || ! d) {
2407 NG_FREE_M (m);
2408 return ENETDOWN;
2409 }
2410
2411 bd = d->board->sys;
2412 /* Check for high priority data */
2413 if ((ptag = (struct ng_tag_prio *)m_tag_locate(m, NGM_GENERIC_COOKIE,
2414 NG_TAG_PRIO, NULL)) != NULL && (ptag->priority > NG_PRIO_CUTOFF) )
2415 q = &d->hi_queue;
2416 else
2417 q = &d->lo_queue;
2418
2419 s = splhigh ();
2420 CX_LOCK (bd);
2421 IF_LOCK (q);
2422 if (_IF_QFULL (q)) {
2423 IF_UNLOCK (q);
2424 CX_UNLOCK (bd);
2425 splx (s);
2426 NG_FREE_M (m);
2427 return ENOBUFS;
2428 }
2429 _IF_ENQUEUE (q, m);
2430 IF_UNLOCK (q);
2431 cx_start (d);
2432 CX_UNLOCK (bd);
2433 splx (s);
2434 return 0;
2435 }
2436
ng_cx_rmnode(node_p node)2437 static int ng_cx_rmnode (node_p node)
2438 {
2439 drv_t *d = NG_NODE_PRIVATE (node);
2440 bdrv_t *bd;
2441
2442 CX_DEBUG (d, ("Rmnode\n"));
2443 if (d && d->running) {
2444 int s = splhigh ();
2445 bd = d->board->sys;
2446 CX_LOCK (bd);
2447 cx_down (d);
2448 CX_UNLOCK (bd);
2449 splx (s);
2450 }
2451 #ifdef KLD_MODULE
2452 if (node->nd_flags & NGF_REALLY_DIE) {
2453 NG_NODE_SET_PRIVATE (node, NULL);
2454 NG_NODE_UNREF (node);
2455 }
2456 NG_NODE_REVIVE(node); /* Persistent node */
2457 #endif
2458 return 0;
2459 }
2460
ng_cx_connect(hook_p hook)2461 static int ng_cx_connect (hook_p hook)
2462 {
2463 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2464
2465 callout_reset (&d->timeout_handle, hz, cx_watchdog_timer, d);
2466 return 0;
2467 }
2468
ng_cx_disconnect(hook_p hook)2469 static int ng_cx_disconnect (hook_p hook)
2470 {
2471 drv_t *d = NG_NODE_PRIVATE (NG_HOOK_NODE (hook));
2472 bdrv_t *bd = d->board->sys;
2473 int s;
2474
2475 s = splhigh ();
2476 CX_LOCK (bd);
2477 if (NG_HOOK_PRIVATE (hook))
2478 cx_down (d);
2479 CX_UNLOCK (bd);
2480 splx (s);
2481 /* If we were wait it than it reasserted now, just stop it. */
2482 if (!callout_drain (&d->timeout_handle))
2483 callout_stop (&d->timeout_handle);
2484 return 0;
2485 }
2486 #endif /*NETGRAPH*/
2487
cx_modevent(module_t mod,int type,void * unused)2488 static int cx_modevent (module_t mod, int type, void *unused)
2489 {
2490 static int load_count = 0;
2491
2492 switch (type) {
2493 case MOD_LOAD:
2494 #ifdef NETGRAPH
2495 if (ng_newtype (&typestruct))
2496 printf ("Failed to register ng_cx\n");
2497 #endif
2498 ++load_count;
2499
2500 callout_init (&timeout_handle, 1);
2501 callout_reset (&timeout_handle, hz*5, cx_timeout, 0);
2502 /* Software interrupt. */
2503 swi_add(&tty_intr_event, "cx", cx_softintr, NULL, SWI_TTY,
2504 INTR_MPSAFE, &cx_fast_ih);
2505 break;
2506 case MOD_UNLOAD:
2507 if (load_count == 1) {
2508 printf ("Removing device entry for Sigma\n");
2509 #ifdef NETGRAPH
2510 ng_rmtype (&typestruct);
2511 #endif
2512 }
2513 /* If we were wait it than it reasserted now, just stop it. */
2514 if (!callout_drain (&timeout_handle))
2515 callout_stop (&timeout_handle);
2516 swi_remove (cx_fast_ih);
2517 --load_count;
2518 break;
2519 case MOD_SHUTDOWN:
2520 break;
2521 }
2522 return 0;
2523 }
2524
2525 #ifdef NETGRAPH
2526 static struct ng_type typestruct = {
2527 .version = NG_ABI_VERSION,
2528 .name = NG_CX_NODE_TYPE,
2529 .constructor = ng_cx_constructor,
2530 .rcvmsg = ng_cx_rcvmsg,
2531 .shutdown = ng_cx_rmnode,
2532 .newhook = ng_cx_newhook,
2533 .connect = ng_cx_connect,
2534 .rcvdata = ng_cx_rcvdata,
2535 .disconnect = ng_cx_disconnect,
2536 };
2537 #endif /*NETGRAPH*/
2538
2539 #ifdef NETGRAPH
2540 MODULE_DEPEND (ng_cx, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION);
2541 #else
2542 MODULE_DEPEND (isa_cx, sppp, 1, 1, 1);
2543 #endif
2544 DRIVER_MODULE (cx, isa, cx_isa_driver, cx_devclass, cx_modevent, NULL);
2545 MODULE_VERSION (cx, 1);
2546