38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/bus.h>
41#include <sys/conf.h>
42#include <sys/fcntl.h>
43#include <sys/interrupt.h>
44#include <sys/kernel.h>
45#include <sys/malloc.h>
46#include <sys/tty.h>
47#include <machine/bus.h>
48#include <machine/resource.h>
49#include <sys/rman.h>
50
51#include <dev/ic/cd180.h>
52#include <dev/rc/rcreg.h>
53#include <isa/isavar.h>
54
55#define IOBASE_ADDRS 14
56
57#define DEV_TO_RC(dev) (struct rc_chans *)((dev)->si_drv1)
58#define TTY_TO_RC(tty) DEV_TO_RC((tty)->t_dev)
59
60#define rcin(sc, port) RC_IN(sc, port)
61#define rcout(sc, port, v) RC_OUT(sc, port, v)
62
63#define WAITFORCCR(sc, chan) rc_wait0((sc), (chan), __LINE__)
64
65#define CCRCMD(sc, chan, cmd) do { \
66 WAITFORCCR((sc), (chan)); \
67 rcout((sc), CD180_CCR, (cmd)); \
68} while (0)
69
70#define RC_IBUFSIZE 256
71#define RB_I_HIGH_WATER (TTYHOG - 2 * RC_IBUFSIZE)
72#define RC_OBUFSIZE 512
73#define RC_IHIGHWATER (3 * RC_IBUFSIZE / 4)
74#define INPUT_FLAGS_SHIFT (2 * RC_IBUFSIZE)
75#define LOTS_OF_EVENTS 64
76
77#define RC_FAKEID 0x10
78
79#define CALLOUT(dev) (((intptr_t)(dev)->si_drv2) != 0)
80
81/* Per-channel structure */
82struct rc_chans {
83 struct rc_softc *rc_rcb; /* back ptr */
84 dev_t rc_dev; /* non-callout device */
85 dev_t rc_cdev; /* callout device */
86 u_short rc_flags; /* Misc. flags */
87 int rc_chan; /* Channel # */
88 u_char rc_ier; /* intr. enable reg */
89 u_char rc_msvr; /* modem sig. status */
90 u_char rc_cor2; /* options reg */
91 u_char rc_pendcmd; /* special cmd pending */
92 u_int rc_dtrwait; /* dtr timeout */
93 u_int rc_dcdwaits; /* how many waits DCD in open */
94 u_char rc_hotchar; /* end packed optimize */
95 struct tty rc_tp; /* tty struct */
96 u_char *rc_iptr; /* Chars input buffer */
97 u_char *rc_hiwat; /* hi-water mark */
98 u_char *rc_bufend; /* end of buffer */
99 u_char *rc_optr; /* ptr in output buf */
100 u_char *rc_obufend; /* end of output buf */
101 u_char rc_ibuf[4 * RC_IBUFSIZE]; /* input buffer */
102 u_char rc_obuf[RC_OBUFSIZE]; /* output buffer */
103 struct callout rc_dtrcallout;
104};
105
106/* Per-board structure */
107struct rc_softc {
108 device_t sc_dev;
109 struct resource *sc_irq;
110 struct resource *sc_port[IOBASE_ADDRS];
111 int sc_irqrid;
112 void *sc_hwicookie;
113 bus_space_tag_t sc_bt;
114 bus_space_handle_t sc_bh;
115 u_int sc_unit; /* unit # */
116 u_char sc_dtr; /* DTR status */
117 int sc_opencount;
118 int sc_scheduled_event;
119 void *sc_swicookie;
120 struct rc_chans sc_channels[CD180_NCHAN]; /* channels */
121};
122
123/* Static prototypes */
124static void rc_release_resources(device_t dev);
125static void rc_intr(void *);
126static void rc_hwreset(struct rc_softc *, unsigned int);
127static int rc_test(struct rc_softc *);
128static void rc_discard_output(struct rc_chans *);
129static void rc_hardclose(struct rc_chans *);
130static int rc_modctl(struct rc_chans *, int, int);
131static void rc_start(struct tty *);
132static void rc_stop(struct tty *, int rw);
133static int rc_param(struct tty *, struct termios *);
134static void rc_pollcard(void *);
135static void rc_reinit(struct rc_softc *);
136#ifdef RCDEBUG
137static void printrcflags();
138#endif
139static void rc_dtrwakeup(void *);
140static void disc_optim(struct tty *tp, struct termios *t, struct rc_chans *);
141static void rc_wait0(struct rc_softc *sc, int chan, int line);
142
143static d_open_t rcopen;
144static d_close_t rcclose;
145static d_ioctl_t rcioctl;
146
147#define CDEV_MAJOR 63
148static struct cdevsw rc_cdevsw = {
149 .d_open = rcopen,
150 .d_close = rcclose,
151 .d_read = ttyread,
152 .d_write = ttywrite,
153 .d_ioctl = rcioctl,
154 .d_poll = ttypoll,
155 .d_name = "rc",
156 .d_maj = CDEV_MAJOR,
157 .d_flags = D_TTY,
158 .d_kqfilter = ttykqfilter,
159};
160
161static devclass_t rc_devclass;
162
163/* Flags */
164#define RC_DTR_OFF 0x0001 /* DTR wait, for close/open */
165#define RC_ACTOUT 0x0002 /* Dial-out port active */
166#define RC_RTSFLOW 0x0004 /* RTS flow ctl enabled */
167#define RC_CTSFLOW 0x0008 /* CTS flow ctl enabled */
168#define RC_DORXFER 0x0010 /* RXFER event planned */
169#define RC_DOXXFER 0x0020 /* XXFER event planned */
170#define RC_MODCHG 0x0040 /* Modem status changed */
171#define RC_OSUSP 0x0080 /* Output suspended */
172#define RC_OSBUSY 0x0100 /* start() routine in progress */
173#define RC_WAS_BUFOVFL 0x0200 /* low-level buffer ovferflow */
174#define RC_WAS_SILOVFL 0x0400 /* silo buffer overflow */
175#define RC_SEND_RDY 0x0800 /* ready to send */
176
177/* Table for translation of RCSR status bits to internal form */
178static int rc_rcsrt[16] = {
179 0, TTY_OE, TTY_FE,
180 TTY_FE|TTY_OE, TTY_PE, TTY_PE|TTY_OE,
181 TTY_PE|TTY_FE, TTY_PE|TTY_FE|TTY_OE, TTY_BI,
182 TTY_BI|TTY_OE, TTY_BI|TTY_FE, TTY_BI|TTY_FE|TTY_OE,
183 TTY_BI|TTY_PE, TTY_BI|TTY_PE|TTY_OE, TTY_BI|TTY_PE|TTY_FE,
184 TTY_BI|TTY_PE|TTY_FE|TTY_OE
185};
186
187static int rc_ports[] =
188 { 0x220, 0x240, 0x250, 0x260, 0x2a0, 0x2b0, 0x300, 0x320 };
189static int iobase_addrs[IOBASE_ADDRS] =
190 { 0, 0x400, 0x800, 0xc00, 0x1400, 0x1800, 0x1c00, 0x2000,
191 0x3000, 0x3400, 0x3800, 0x3c00, 0x4000, 0x8000 };
192
193/**********************************************/
194
195static int
196rc_probe(device_t dev)
197{
198 u_int port;
199 int i, found;
200
201 /*
202 * We don't know of any PnP ID's for these cards.
203 */
204 if (isa_get_logicalid(dev) != 0)
205 return (ENXIO);
206
207 /*
208 * We have to have an IO port hint that is valid.
209 */
210 port = isa_get_port(dev);
211 if (port == -1)
212 return (ENXIO);
213 found = 0;
214 for (i = 0; i < sizeof(rc_ports) / sizeof(int); i++)
215 if (rc_ports[i] == port) {
216 found = 1;
217 break;
218 }
219 if (!found)
220 return (ENXIO);
221
222 /*
223 * We have to have an IRQ hint.
224 */
225 if (isa_get_irq(dev) == -1)
226 return (ENXIO);
227
228 device_set_desc(dev, "SDL Riscom/8");
229 return (0);
230}
231
232static int
233rc_attach(device_t dev)
234{
235 struct rc_chans *rc;
236 struct tty *tp;
237 struct rc_softc *sc;
238 u_int port;
239 int base, chan, error, i, x;
240 dev_t cdev;
241
242 sc = device_get_softc(dev);
243 sc->sc_dev = dev;
244
245 /*
246 * We need to have IO ports. Lots of them. We need
247 * the following ranges relative to the base port:
248 * 0x0 - 0x10
249 * 0x400 - 0x410
250 * 0x800 - 0x810
251 * 0xc00 - 0xc10
252 * 0x1400 - 0x1410
253 * 0x1800 - 0x1810
254 * 0x1c00 - 0x1c10
255 * 0x2000 - 0x2010
256 * 0x3000 - 0x3010
257 * 0x3400 - 0x3410
258 * 0x3800 - 0x3810
259 * 0x3c00 - 0x3c10
260 * 0x4000 - 0x4010
261 * 0x8000 - 0x8010
262 */
263 port = isa_get_port(dev);
264 for (i = 0; i < IOBASE_ADDRS; i++)
265 if (bus_set_resource(dev, SYS_RES_IOPORT, i,
266 port + iobase_addrs[i], 0x10) != 0)
267 return (ENXIO);
268 error = ENOMEM;
269 for (i = 0; i < IOBASE_ADDRS; i++) {
270 x = i;
271 sc->sc_port[i] = bus_alloc_resource(dev, SYS_RES_IOPORT, &x,
272 0ul, ~0ul, 0x10, RF_ACTIVE);
273 if (x != i) {
274 device_printf(dev, "ioport %d was rid %d\n", i, x);
275 goto fail;
276 }
277 if (sc->sc_port[i] == NULL) {
278 device_printf(dev, "failed to alloc ioports %x-%x\n",
279 port + iobase_addrs[i],
280 port + iobase_addrs[i] + 0x10);
281 goto fail;
282 }
283 }
284 sc->sc_bt = rman_get_bustag(sc->sc_port[0]);
285 sc->sc_bh = rman_get_bushandle(sc->sc_port[0]);
286
287 sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irqrid,
288 0ul, ~0ul, 1, RF_ACTIVE);
289 if (sc->sc_irq == NULL) {
290 device_printf(dev, "failed to alloc IRQ\n");
291 goto fail;
292 }
293
294 /*
295 * Now do some actual tests to make sure it works.
296 */
297 error = ENXIO;
298 rcout(sc, CD180_PPRL, 0x22); /* Random values to Prescale reg. */
299 rcout(sc, CD180_PPRH, 0x11);
300 if (rcin(sc, CD180_PPRL) != 0x22 || rcin(sc, CD180_PPRH) != 0x11)
301 goto fail;
302 if (rc_test(sc))
303 goto fail;
304
305 /*
306 * Ok, start actually hooking things up.
307 */
308 sc->sc_unit = device_get_unit(dev);
309 /*sc->sc_chipid = 0x10 + device_get_unit(dev);*/
310 device_printf(dev, "%d chans, firmware rev. %c\n",
311 CD180_NCHAN, (rcin(sc, CD180_GFRCR) & 0xF) + 'A');
312 rc = sc->sc_channels;
313 base = CD180_NCHAN * sc->sc_unit;
314 for (chan = 0; chan < CD180_NCHAN; chan++, rc++) {
315 rc->rc_rcb = sc;
316 rc->rc_chan = chan;
317 rc->rc_iptr = rc->rc_ibuf;
318 rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE];
319 rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER];
320 rc->rc_optr = rc->rc_obufend = rc->rc_obuf;
321 rc->rc_dtrwait = 3 * hz;
322 callout_init(&rc->rc_dtrcallout, 0);
323 tp = &rc->rc_tp;
324 ttychars(tp);
325 tp->t_lflag = tp->t_iflag = tp->t_oflag = 0;
326 tp->t_cflag = TTYDEF_CFLAG;
327 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
328 cdev = make_dev(&rc_cdevsw, chan + base,
329 UID_ROOT, GID_WHEEL, 0600, "ttym%d", chan + base);
330 cdev->si_drv1 = rc;
331 cdev->si_drv2 = 0;
332 cdev->si_tty = tp;
333 rc->rc_dev = cdev;
334 cdev = make_dev(&rc_cdevsw, chan + base + 128,
335 UID_UUCP, GID_DIALER, 0660, "cuam%d", chan + base);
336 cdev->si_drv1 = rc;
337 cdev->si_drv2 = (void *)1;
338 cdev->si_tty = tp;
339 rc->rc_cdev = cdev;
340 }
341
342 error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_TTY, rc_intr, sc,
343 &sc->sc_hwicookie);
344 if (error) {
345 device_printf(dev, "failed to register interrupt handler\n");
346 goto fail;
347 }
348
349 swi_add(&tty_ithd, "tty:rc", rc_pollcard, sc, SWI_TTY, 0,
350 &sc->sc_swicookie);
351 return (0);
352
353fail:
354 rc_release_resources(dev);
355 return (error);
356}
357
358static int
359rc_detach(device_t dev)
360{
361 struct rc_softc *sc;
362 struct rc_chans *rc;
363 int error, i, s;
364
365 sc = device_get_softc(dev);
366 if (sc->sc_opencount > 0)
367 return (EBUSY);
368 sc->sc_opencount = -1;
369
370 rc = sc->sc_channels;
371 for (i = 0; i < CD180_NCHAN; i++, rc++) {
372 destroy_dev(rc->rc_dev);
373 destroy_dev(rc->rc_cdev);
374 }
375
376 rc = sc->sc_channels;
377 s = splsoftclock();
378 for (i = 0; i < CD180_NCHAN; i++) {
379 if ((rc->rc_flags & RC_DTR_OFF) &&
380 !callout_stop(&rc->rc_dtrcallout))
381 tsleep(&rc->rc_dtrwait, TTIPRI, "rcdtrdet", 0);
382 }
383
384 error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_hwicookie);
385 if (error)
386 device_printf(dev, "failed to deregister interrupt handler\n");
387 ithread_remove_handler(sc->sc_swicookie);
388 rc_release_resources(dev);
389
390 return (0);
391}
392
393static void
394rc_release_resources(device_t dev)
395{
396 struct rc_softc *sc;
397 int i;
398
399 sc = device_get_softc(dev);
400 if (sc->sc_irq != NULL) {
401 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid,
402 sc->sc_irq);
403 sc->sc_irq = NULL;
404 }
405 for (i = 0; i < IOBASE_ADDRS; i++) {
406 if (sc->sc_port[i] == NULL)
407 break;
408 bus_release_resource(dev, SYS_RES_IOPORT, i, sc->sc_port[i]);
409 sc->sc_port[i] = NULL;
410 }
411}
412
413/* RC interrupt handling */
414static void
415rc_intr(void *arg)
416{
417 struct rc_softc *sc;
418 struct rc_chans *rc;
419 int resid, chan;
420 u_char val, iack, bsr, ucnt, *optr;
421 int good_data, t_state;
422
423 sc = (struct rc_softc *)arg;
424 bsr = ~(rcin(sc, RC_BSR));
425 if (!(bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT))) {
426 device_printf(sc->sc_dev, "extra interrupt\n");
427 rcout(sc, CD180_EOIR, 0);
428 return;
429 }
430
431 while (bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT)) {
432#ifdef RCDEBUG_DETAILED
433 device_printf(sc->sc_dev, "intr (%p) %s%s%s%s\n", arg, bsr,
434 (bsr & RC_BSR_TOUT)?"TOUT ":"",
435 (bsr & RC_BSR_RXINT)?"RXINT ":"",
436 (bsr & RC_BSR_TXINT)?"TXINT ":"",
437 (bsr & RC_BSR_MOINT)?"MOINT":"");
438#endif
439 if (bsr & RC_BSR_TOUT) {
440 device_printf(sc->sc_dev,
441 "hardware failure, reset board\n");
442 rcout(sc, RC_CTOUT, 0);
443 rc_reinit(sc);
444 return;
445 }
446 if (bsr & RC_BSR_RXINT) {
447 iack = rcin(sc, RC_PILR_RX);
448 good_data = (iack == (GIVR_IT_RGDI | RC_FAKEID));
449 if (!good_data && iack != (GIVR_IT_REI | RC_FAKEID)) {
450 device_printf(sc->sc_dev,
451 "fake rxint: %02x\n", iack);
452 goto more_intrs;
453 }
454 chan = ((rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH);
455 rc = &sc->sc_channels[chan];
456 t_state = rc->rc_tp.t_state;
457 /* Do RTS flow control stuff */
458 if ( (rc->rc_flags & RC_RTSFLOW)
459 || !(t_state & TS_ISOPEN)
460 ) {
461 if ( ( !(t_state & TS_ISOPEN)
462 || (t_state & TS_TBLOCK)
463 )
464 && (rc->rc_msvr & MSVR_RTS)
465 )
466 rcout(sc, CD180_MSVR,
467 rc->rc_msvr &= ~MSVR_RTS);
468 else if (!(rc->rc_msvr & MSVR_RTS))
469 rcout(sc, CD180_MSVR,
470 rc->rc_msvr |= MSVR_RTS);
471 }
472 ucnt = rcin(sc, CD180_RDCR) & 0xF;
473 resid = 0;
474
475 if (t_state & TS_ISOPEN) {
476 /* check for input buffer overflow */
477 if ((rc->rc_iptr + ucnt) >= rc->rc_bufend) {
478 resid = ucnt;
479 ucnt = rc->rc_bufend - rc->rc_iptr;
480 resid -= ucnt;
481 if (!(rc->rc_flags & RC_WAS_BUFOVFL)) {
482 rc->rc_flags |= RC_WAS_BUFOVFL;
483 sc->sc_scheduled_event++;
484 }
485 }
486 optr = rc->rc_iptr;
487 /* check foor good data */
488 if (good_data) {
489 while (ucnt-- > 0) {
490 val = rcin(sc, CD180_RDR);
491 optr[0] = val;
492 optr[INPUT_FLAGS_SHIFT] = 0;
493 optr++;
494 sc->sc_scheduled_event++;
495 if (val != 0 && val == rc->rc_hotchar)
496 swi_sched(sc->sc_swicookie, 0);
497 }
498 } else {
499 /* Store also status data */
500 while (ucnt-- > 0) {
501 iack = rcin(sc, CD180_RCSR);
502 if (iack & RCSR_Timeout)
503 break;
504 if ( (iack & RCSR_OE)
505 && !(rc->rc_flags & RC_WAS_SILOVFL)) {
506 rc->rc_flags |= RC_WAS_SILOVFL;
507 sc->sc_scheduled_event++;
508 }
509 val = rcin(sc, CD180_RDR);
510 /*
511 Don't store PE if IGNPAR and BREAK if IGNBRK,
512 this hack allows "raw" tty optimization
513 works even if IGN* is set.
514 */
515 if ( !(iack & (RCSR_PE|RCSR_FE|RCSR_Break))
516 || ((!(iack & (RCSR_PE|RCSR_FE))
517 || !(rc->rc_tp.t_iflag & IGNPAR))
518 && (!(iack & RCSR_Break)
519 || !(rc->rc_tp.t_iflag & IGNBRK)))) {
520 if ( (iack & (RCSR_PE|RCSR_FE))
521 && (t_state & TS_CAN_BYPASS_L_RINT)
522 && ((iack & RCSR_FE)
523 || ((iack & RCSR_PE)
524 && (rc->rc_tp.t_iflag & INPCK))))
525 val = 0;
526 else if (val != 0 && val == rc->rc_hotchar)
527 swi_sched(sc->sc_swicookie, 0);
528 optr[0] = val;
529 optr[INPUT_FLAGS_SHIFT] = iack;
530 optr++;
531 sc->sc_scheduled_event++;
532 }
533 }
534 }
535 rc->rc_iptr = optr;
536 rc->rc_flags |= RC_DORXFER;
537 } else
538 resid = ucnt;
539 /* Clear FIFO if necessary */
540 while (resid-- > 0) {
541 if (!good_data)
542 iack = rcin(sc, CD180_RCSR);
543 else
544 iack = 0;
545 if (iack & RCSR_Timeout)
546 break;
547 (void) rcin(sc, CD180_RDR);
548 }
549 goto more_intrs;
550 }
551 if (bsr & RC_BSR_MOINT) {
552 iack = rcin(sc, RC_PILR_MODEM);
553 if (iack != (GIVR_IT_MSCI | RC_FAKEID)) {
554 device_printf(sc->sc_dev, "fake moint: %02x\n",
555 iack);
556 goto more_intrs;
557 }
558 chan = ((rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH);
559 rc = &sc->sc_channels[chan];
560 iack = rcin(sc, CD180_MCR);
561 rc->rc_msvr = rcin(sc, CD180_MSVR);
562 rcout(sc, CD180_MCR, 0);
563#ifdef RCDEBUG
564 printrcflags(rc, "moint");
565#endif
566 if (rc->rc_flags & RC_CTSFLOW) {
567 if (rc->rc_msvr & MSVR_CTS)
568 rc->rc_flags |= RC_SEND_RDY;
569 else
570 rc->rc_flags &= ~RC_SEND_RDY;
571 } else
572 rc->rc_flags |= RC_SEND_RDY;
573 if ((iack & MCR_CDchg) && !(rc->rc_flags & RC_MODCHG)) {
574 sc->sc_scheduled_event += LOTS_OF_EVENTS;
575 rc->rc_flags |= RC_MODCHG;
576 swi_sched(sc->sc_swicookie, 0);
577 }
578 goto more_intrs;
579 }
580 if (bsr & RC_BSR_TXINT) {
581 iack = rcin(sc, RC_PILR_TX);
582 if (iack != (GIVR_IT_TDI | RC_FAKEID)) {
583 device_printf(sc->sc_dev, "fake txint: %02x\n",
584 iack);
585 goto more_intrs;
586 }
587 chan = ((rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH);
588 rc = &sc->sc_channels[chan];
589 if ( (rc->rc_flags & RC_OSUSP)
590 || !(rc->rc_flags & RC_SEND_RDY)
591 )
592 goto more_intrs;
593 /* Handle breaks and other stuff */
594 if (rc->rc_pendcmd) {
595 rcout(sc, CD180_COR2, rc->rc_cor2 |= COR2_ETC);
596 rcout(sc, CD180_TDR, CD180_C_ESC);
597 rcout(sc, CD180_TDR, rc->rc_pendcmd);
598 rcout(sc, CD180_COR2, rc->rc_cor2 &= ~COR2_ETC);
599 rc->rc_pendcmd = 0;
600 goto more_intrs;
601 }
602 optr = rc->rc_optr;
603 resid = rc->rc_obufend - optr;
604 if (resid > CD180_NFIFO)
605 resid = CD180_NFIFO;
606 while (resid-- > 0)
607 rcout(sc, CD180_TDR, *optr++);
608 rc->rc_optr = optr;
609
610 /* output completed? */
611 if (optr >= rc->rc_obufend) {
612 rcout(sc, CD180_IER, rc->rc_ier &= ~IER_TxRdy);
613#ifdef RCDEBUG
614 device_printf(sc->sc_dev,
615 "channel %d: output completed\n",
616 rc->rc_chan);
617#endif
618 if (!(rc->rc_flags & RC_DOXXFER)) {
619 sc->sc_scheduled_event += LOTS_OF_EVENTS;
620 rc->rc_flags |= RC_DOXXFER;
621 swi_sched(sc->sc_swicookie, 0);
622 }
623 }
624 }
625 more_intrs:
626 rcout(sc, CD180_EOIR, 0); /* end of interrupt */
627 rcout(sc, RC_CTOUT, 0);
628 bsr = ~(rcin(sc, RC_BSR));
629 }
630}
631
632/* Feed characters to output buffer */
633static void
634rc_start(struct tty *tp)
635{
636 struct rc_softc *sc;
637 struct rc_chans *rc;
638 int s;
639
640 rc = TTY_TO_RC(tp);
641 if (rc->rc_flags & RC_OSBUSY)
642 return;
643 sc = rc->rc_rcb;
644 s = spltty();
645 rc->rc_flags |= RC_OSBUSY;
646 critical_enter();
647 if (tp->t_state & TS_TTSTOP)
648 rc->rc_flags |= RC_OSUSP;
649 else
650 rc->rc_flags &= ~RC_OSUSP;
651 /* Do RTS flow control stuff */
652 if ( (rc->rc_flags & RC_RTSFLOW)
653 && (tp->t_state & TS_TBLOCK)
654 && (rc->rc_msvr & MSVR_RTS)
655 ) {
656 rcout(sc, CD180_CAR, rc->rc_chan);
657 rcout(sc, CD180_MSVR, rc->rc_msvr &= ~MSVR_RTS);
658 } else if (!(rc->rc_msvr & MSVR_RTS)) {
659 rcout(sc, CD180_CAR, rc->rc_chan);
660 rcout(sc, CD180_MSVR, rc->rc_msvr |= MSVR_RTS);
661 }
662 critical_exit();
663 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
664 goto out;
665#ifdef RCDEBUG
666 printrcflags(rc, "rcstart");
667#endif
668 ttwwakeup(tp);
669#ifdef RCDEBUG
670 printf("rcstart: outq = %d obuf = %d\n",
671 tp->t_outq.c_cc, rc->rc_obufend - rc->rc_optr);
672#endif
673 if (tp->t_state & TS_BUSY)
674 goto out; /* output still in progress ... */
675
676 if (tp->t_outq.c_cc > 0) {
677 u_int ocnt;
678
679 tp->t_state |= TS_BUSY;
680 ocnt = q_to_b(&tp->t_outq, rc->rc_obuf, sizeof rc->rc_obuf);
681 critical_enter();
682 rc->rc_optr = rc->rc_obuf;
683 rc->rc_obufend = rc->rc_optr + ocnt;
684 critical_exit();
685 if (!(rc->rc_ier & IER_TxRdy)) {
686#ifdef RCDEBUG
687 device_printf(sc->sc_dev,
688 "channel %d: rcstart enable txint\n", rc->rc_chan);
689#endif
690 rcout(sc, CD180_CAR, rc->rc_chan);
691 rcout(sc, CD180_IER, rc->rc_ier |= IER_TxRdy);
692 }
693 }
694out:
695 rc->rc_flags &= ~RC_OSBUSY;
696 (void) splx(s);
697}
698
699/* Handle delayed events. */
700void
701rc_pollcard(void *arg)
702{
703 struct rc_softc *sc;
704 struct rc_chans *rc;
705 struct tty *tp;
706 u_char *tptr, *eptr;
707 int chan, icnt;
708
709 sc = (struct rc_softc *)arg;
710 if (sc->sc_scheduled_event == 0)
711 return;
712 do {
713 rc = sc->sc_channels;
714 for (chan = 0; chan < CD180_NCHAN; rc++, chan++) {
715 tp = &rc->rc_tp;
716#ifdef RCDEBUG
717 if (rc->rc_flags & (RC_DORXFER|RC_DOXXFER|RC_MODCHG|
718 RC_WAS_BUFOVFL|RC_WAS_SILOVFL))
719 printrcflags(rc, "rcevent");
720#endif
721 if (rc->rc_flags & RC_WAS_BUFOVFL) {
722 critical_enter();
723 rc->rc_flags &= ~RC_WAS_BUFOVFL;
724 sc->sc_scheduled_event--;
725 critical_exit();
726 device_printf(sc->sc_dev,
727 "channel %d: interrupt-level buffer overflow\n",
728 chan);
729 }
730 if (rc->rc_flags & RC_WAS_SILOVFL) {
731 critical_enter();
732 rc->rc_flags &= ~RC_WAS_SILOVFL;
733 sc->sc_scheduled_event--;
734 critical_exit();
735 device_printf(sc->sc_dev,
736 "channel %d: silo overflow\n", chan);
737 }
738 if (rc->rc_flags & RC_MODCHG) {
739 critical_enter();
740 rc->rc_flags &= ~RC_MODCHG;
741 sc->sc_scheduled_event -= LOTS_OF_EVENTS;
742 critical_exit();
743 (*linesw[tp->t_line].l_modem)(tp, !!(rc->rc_msvr & MSVR_CD));
744 }
745 if (rc->rc_flags & RC_DORXFER) {
746 critical_enter();
747 rc->rc_flags &= ~RC_DORXFER;
748 eptr = rc->rc_iptr;
749 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE])
750 tptr = &rc->rc_ibuf[RC_IBUFSIZE];
751 else
752 tptr = rc->rc_ibuf;
753 icnt = eptr - tptr;
754 if (icnt > 0) {
755 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) {
756 rc->rc_iptr = rc->rc_ibuf;
757 rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE];
758 rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER];
759 } else {
760 rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE];
761 rc->rc_bufend = &rc->rc_ibuf[2 * RC_IBUFSIZE];
762 rc->rc_hiwat =
763 &rc->rc_ibuf[RC_IBUFSIZE + RC_IHIGHWATER];
764 }
765 if ( (rc->rc_flags & RC_RTSFLOW)
766 && (tp->t_state & TS_ISOPEN)
767 && !(tp->t_state & TS_TBLOCK)
768 && !(rc->rc_msvr & MSVR_RTS)
769 ) {
770 rcout(sc, CD180_CAR, chan);
771 rcout(sc, CD180_MSVR,
772 rc->rc_msvr |= MSVR_RTS);
773 }
774 sc->sc_scheduled_event -= icnt;
775 }
776 critical_exit();
777
778 if (icnt <= 0 || !(tp->t_state & TS_ISOPEN))
779 goto done1;
780
781 if ( (tp->t_state & TS_CAN_BYPASS_L_RINT)
782 && !(tp->t_state & TS_LOCAL)) {
783 if ((tp->t_rawq.c_cc + icnt) >= RB_I_HIGH_WATER
784 && ((rc->rc_flags & RC_RTSFLOW) || (tp->t_iflag & IXOFF))
785 && !(tp->t_state & TS_TBLOCK))
786 ttyblock(tp);
787 tk_nin += icnt;
788 tk_rawcc += icnt;
789 tp->t_rawcc += icnt;
790 if (b_to_q(tptr, icnt, &tp->t_rawq))
791 device_printf(sc->sc_dev,
792 "channel %d: tty-level buffer overflow\n",
793 chan);
794 ttwakeup(tp);
795 if ((tp->t_state & TS_TTSTOP) && ((tp->t_iflag & IXANY)
796 || (tp->t_cc[VSTART] == tp->t_cc[VSTOP]))) {
797 tp->t_state &= ~TS_TTSTOP;
798 tp->t_lflag &= ~FLUSHO;
799 rc_start(tp);
800 }
801 } else {
802 for (; tptr < eptr; tptr++)
803 (*linesw[tp->t_line].l_rint)
804 (tptr[0] |
805 rc_rcsrt[tptr[INPUT_FLAGS_SHIFT] & 0xF], tp);
806 }
807done1: ;
808 }
809 if (rc->rc_flags & RC_DOXXFER) {
810 critical_enter();
811 sc->sc_scheduled_event -= LOTS_OF_EVENTS;
812 rc->rc_flags &= ~RC_DOXXFER;
813 rc->rc_tp.t_state &= ~TS_BUSY;
814 critical_exit();
815 (*linesw[tp->t_line].l_start)(tp);
816 }
817 if (sc->sc_scheduled_event == 0)
818 break;
819 }
820 } while (sc->sc_scheduled_event >= LOTS_OF_EVENTS);
821}
822
823static void
824rc_stop(struct tty *tp, int rw)
825{
826 struct rc_softc *sc;
827 struct rc_chans *rc;
828 u_char *tptr, *eptr;
829
830 rc = TTY_TO_RC(tp);
831 sc = rc->rc_rcb;
832#ifdef RCDEBUG
833 device_printf(sc->sc_dev, "channel %d: rc_stop %s%s\n",
834 rc->rc_chan, (rw & FWRITE)?"FWRITE ":"", (rw & FREAD)?"FREAD":"");
835#endif
836 if (rw & FWRITE)
837 rc_discard_output(rc);
838 critical_enter();
839 if (rw & FREAD) {
840 rc->rc_flags &= ~RC_DORXFER;
841 eptr = rc->rc_iptr;
842 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) {
843 tptr = &rc->rc_ibuf[RC_IBUFSIZE];
844 rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE];
845 } else {
846 tptr = rc->rc_ibuf;
847 rc->rc_iptr = rc->rc_ibuf;
848 }
849 sc->sc_scheduled_event -= eptr - tptr;
850 }
851 if (tp->t_state & TS_TTSTOP)
852 rc->rc_flags |= RC_OSUSP;
853 else
854 rc->rc_flags &= ~RC_OSUSP;
855 critical_exit();
856}
857
858static int
859rcopen(dev_t dev, int flag, int mode, d_thread_t *td)
860{
861 struct rc_softc *sc;
862 struct rc_chans *rc;
863 struct tty *tp;
864 int s, error = 0;
865
866 rc = DEV_TO_RC(dev);
867 sc = rc->rc_rcb;
868 tp = &rc->rc_tp;
869 if (sc->sc_opencount < 0)
870 return (ENXIO);
871 sc->sc_opencount++;
872#ifdef RCDEBUG
873 device_printf(sc->sc_dev, "channel %d: rcopen: dev %p\n",
874 rc->rc_chan, dev);
875#endif
876 s = spltty();
877
878again:
879 while (rc->rc_flags & RC_DTR_OFF) {
880 error = tsleep(&(rc->rc_dtrwait), TTIPRI | PCATCH, "rcdtr", 0);
881 if (error != 0)
882 goto out;
883 }
884 if (tp->t_state & TS_ISOPEN) {
885 if (CALLOUT(dev)) {
886 if (!(rc->rc_flags & RC_ACTOUT)) {
887 error = EBUSY;
888 goto out;
889 }
890 } else {
891 if (rc->rc_flags & RC_ACTOUT) {
892 if (flag & O_NONBLOCK) {
893 error = EBUSY;
894 goto out;
895 }
896 error = tsleep(&rc->rc_rcb,
897 TTIPRI|PCATCH, "rcbi", 0);
898 if (error)
899 goto out;
900 goto again;
901 }
902 }
903 if (tp->t_state & TS_XCLUDE &&
904 suser(td)) {
905 error = EBUSY;
906 goto out;
907 }
908 } else {
909 tp->t_oproc = rc_start;
910 tp->t_param = rc_param;
911 tp->t_stop = rc_stop;
912 tp->t_dev = dev;
913
914 if (CALLOUT(dev))
915 tp->t_cflag |= CLOCAL;
916 else
917 tp->t_cflag &= ~CLOCAL;
918
919 error = rc_param(tp, &tp->t_termios);
920 if (error)
921 goto out;
922 (void) rc_modctl(rc, TIOCM_RTS|TIOCM_DTR, DMSET);
923
924 if ((rc->rc_msvr & MSVR_CD) || CALLOUT(dev))
925 (*linesw[tp->t_line].l_modem)(tp, 1);
926 }
927 if (!(tp->t_state & TS_CARR_ON) && !CALLOUT(dev)
928 && !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) {
929 rc->rc_dcdwaits++;
930 error = tsleep(TSA_CARR_ON(tp), TTIPRI | PCATCH, "rcdcd", 0);
931 rc->rc_dcdwaits--;
932 if (error != 0)
933 goto out;
934 goto again;
935 }
936 error = (*linesw[tp->t_line].l_open)(dev, tp);
937 disc_optim(tp, &tp->t_termios, rc);
938 if ((tp->t_state & TS_ISOPEN) && CALLOUT(dev))
939 rc->rc_flags |= RC_ACTOUT;
940out:
941 (void) splx(s);
942
943 if(rc->rc_dcdwaits == 0 && !(tp->t_state & TS_ISOPEN))
944 rc_hardclose(rc);
945
946 return error;
947}
948
949static int
950rcclose(dev_t dev, int flag, int mode, d_thread_t *td)
951{
952 struct rc_softc *sc;
953 struct rc_chans *rc;
954 struct tty *tp;
955 int s;
956
957 rc = DEV_TO_RC(dev);
958 sc = rc->rc_rcb;
959 tp = &rc->rc_tp;
960#ifdef RCDEBUG
961 device_printf(sc->sc_dev, "channel %d: rcclose dev %p\n",
962 rc->rc_chan, dev);
963#endif
964 s = spltty();
965 (*linesw[tp->t_line].l_close)(tp, flag);
966 disc_optim(tp, &tp->t_termios, rc);
967 rc_stop(tp, FREAD | FWRITE);
968 rc_hardclose(rc);
969 ttyclose(tp);
970 splx(s);
971 KASSERT(sc->sc_opencount > 0, ("rcclose: non-positive open count"));
972 sc->sc_opencount--;
973 return 0;
974}
975
976static void
977rc_hardclose(struct rc_chans *rc)
978{
979 struct rc_softc *sc;
980 struct tty *tp;
981 int s;
982
983 tp = &rc->rc_tp;
984 sc = rc->rc_rcb;
985 s = spltty();
986 rcout(sc, CD180_CAR, rc->rc_chan);
987
988 /* Disable rx/tx intrs */
989 rcout(sc, CD180_IER, rc->rc_ier = 0);
990 if ( (tp->t_cflag & HUPCL)
991 || (!(rc->rc_flags & RC_ACTOUT)
992 && !(rc->rc_msvr & MSVR_CD)
993 && !(tp->t_cflag & CLOCAL))
994 || !(tp->t_state & TS_ISOPEN)
995 ) {
996 CCRCMD(sc, rc->rc_chan, CCR_ResetChan);
997 WAITFORCCR(sc, rc->rc_chan);
998 (void) rc_modctl(rc, TIOCM_RTS, DMSET);
999 if (rc->rc_dtrwait) {
1000 callout_reset(&rc->rc_dtrcallout, rc->rc_dtrwait,
1001 rc_dtrwakeup, rc);
1002 rc->rc_flags |= RC_DTR_OFF;
1003 }
1004 }
1005 rc->rc_flags &= ~RC_ACTOUT;
1006 wakeup( &rc->rc_rcb); /* wake bi */
1007 wakeup(TSA_CARR_ON(tp));
1008 (void) splx(s);
1009}
1010
1011/* Reset the bastard */
1012static void
1013rc_hwreset(struct rc_softc *sc, uint chipid)
1014{
1015 CCRCMD(sc, -1, CCR_HWRESET); /* Hardware reset */
1016 DELAY(20000);
1017 WAITFORCCR(sc, -1);
1018
1019 rcout(sc, RC_CTOUT, 0); /* Clear timeout */
1020 rcout(sc, CD180_GIVR, chipid);
1021 rcout(sc, CD180_GICR, 0);
1022
1023 /* Set Prescaler Registers (1 msec) */
1024 rcout(sc, CD180_PPRL, ((RC_OSCFREQ + 999) / 1000) & 0xFF);
1025 rcout(sc, CD180_PPRH, ((RC_OSCFREQ + 999) / 1000) >> 8);
1026
1027 /* Initialize Priority Interrupt Level Registers */
1028 rcout(sc, CD180_PILR1, RC_PILR_MODEM);
1029 rcout(sc, CD180_PILR2, RC_PILR_TX);
1030 rcout(sc, CD180_PILR3, RC_PILR_RX);
1031
1032 /* Reset DTR */
1033 rcout(sc, RC_DTREG, ~0);
1034}
1035
1036/* Set channel parameters */
1037static int
1038rc_param(struct tty *tp, struct termios *ts)
1039{
1040 struct rc_softc *sc;
1041 struct rc_chans *rc;
1042 int idivs, odivs, s, val, cflag, iflag, lflag, inpflow;
1043
1044 if ( ts->c_ospeed < 0 || ts->c_ospeed > 76800
1045 || ts->c_ispeed < 0 || ts->c_ispeed > 76800
1046 )
1047 return (EINVAL);
1048 if (ts->c_ispeed == 0)
1049 ts->c_ispeed = ts->c_ospeed;
1050 odivs = RC_BRD(ts->c_ospeed);
1051 idivs = RC_BRD(ts->c_ispeed);
1052
1053 rc = TTY_TO_RC(tp);
1054 sc = rc->rc_rcb;
1055 s = spltty();
1056
1057 /* Select channel */
1058 rcout(sc, CD180_CAR, rc->rc_chan);
1059
1060 /* If speed == 0, hangup line */
1061 if (ts->c_ospeed == 0) {
1062 CCRCMD(sc, rc->rc_chan, CCR_ResetChan);
1063 WAITFORCCR(sc, rc->rc_chan);
1064 (void) rc_modctl(rc, TIOCM_DTR, DMBIC);
1065 }
1066
1067 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
1068 cflag = ts->c_cflag;
1069 iflag = ts->c_iflag;
1070 lflag = ts->c_lflag;
1071
1072 if (idivs > 0) {
1073 rcout(sc, CD180_RBPRL, idivs & 0xFF);
1074 rcout(sc, CD180_RBPRH, idivs >> 8);
1075 }
1076 if (odivs > 0) {
1077 rcout(sc, CD180_TBPRL, odivs & 0xFF);
1078 rcout(sc, CD180_TBPRH, odivs >> 8);
1079 }
1080
1081 /* set timeout value */
1082 if (ts->c_ispeed > 0) {
1083 int itm = ts->c_ispeed > 2400 ? 5 : 10000 / ts->c_ispeed + 1;
1084
1085 if ( !(lflag & ICANON)
1086 && ts->c_cc[VMIN] != 0 && ts->c_cc[VTIME] != 0
1087 && ts->c_cc[VTIME] * 10 > itm)
1088 itm = ts->c_cc[VTIME] * 10;
1089
1090 rcout(sc, CD180_RTPR, itm <= 255 ? itm : 255);
1091 }
1092
1093 switch (cflag & CSIZE) {
1094 case CS5: val = COR1_5BITS; break;
1095 case CS6: val = COR1_6BITS; break;
1096 case CS7: val = COR1_7BITS; break;
1097 default:
1098 case CS8: val = COR1_8BITS; break;
1099 }
1100 if (cflag & PARENB) {
1101 val |= COR1_NORMPAR;
1102 if (cflag & PARODD)
1103 val |= COR1_ODDP;
1104 if (!(cflag & INPCK))
1105 val |= COR1_Ignore;
1106 } else
1107 val |= COR1_Ignore;
1108 if (cflag & CSTOPB)
1109 val |= COR1_2SB;
1110 rcout(sc, CD180_COR1, val);
1111
1112 /* Set FIFO threshold */
1113 val = ts->c_ospeed <= 4800 ? 1 : CD180_NFIFO / 2;
1114 inpflow = 0;
1115 if ( (iflag & IXOFF)
1116 && ( ts->c_cc[VSTOP] != _POSIX_VDISABLE
1117 && ( ts->c_cc[VSTART] != _POSIX_VDISABLE
1118 || (iflag & IXANY)
1119 )
1120 )
1121 ) {
1122 inpflow = 1;
1123 val |= COR3_SCDE|COR3_FCT;
1124 }
1125 rcout(sc, CD180_COR3, val);
1126
1127 /* Initialize on-chip automatic flow control */
1128 val = 0;
1129 rc->rc_flags &= ~(RC_CTSFLOW|RC_SEND_RDY);
1130 if (cflag & CCTS_OFLOW) {
1131 rc->rc_flags |= RC_CTSFLOW;
1132 val |= COR2_CtsAE;
1133 } else
1134 rc->rc_flags |= RC_SEND_RDY;
1135 if (tp->t_state & TS_TTSTOP)
1136 rc->rc_flags |= RC_OSUSP;
1137 else
1138 rc->rc_flags &= ~RC_OSUSP;
1139 if (cflag & CRTS_IFLOW)
1140 rc->rc_flags |= RC_RTSFLOW;
1141 else
1142 rc->rc_flags &= ~RC_RTSFLOW;
1143
1144 if (inpflow) {
1145 if (ts->c_cc[VSTART] != _POSIX_VDISABLE)
1146 rcout(sc, CD180_SCHR1, ts->c_cc[VSTART]);
1147 rcout(sc, CD180_SCHR2, ts->c_cc[VSTOP]);
1148 val |= COR2_TxIBE;
1149 if (iflag & IXANY)
1150 val |= COR2_IXM;
1151 }
1152
1153 rcout(sc, CD180_COR2, rc->rc_cor2 = val);
1154
1155 CCRCMD(sc, rc->rc_chan, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
1156
1157 disc_optim(tp, ts, rc);
1158
1159 /* modem ctl */
1160 val = cflag & CLOCAL ? 0 : MCOR1_CDzd;
1161 if (cflag & CCTS_OFLOW)
1162 val |= MCOR1_CTSzd;
1163 rcout(sc, CD180_MCOR1, val);
1164
1165 val = cflag & CLOCAL ? 0 : MCOR2_CDod;
1166 if (cflag & CCTS_OFLOW)
1167 val |= MCOR2_CTSod;
1168 rcout(sc, CD180_MCOR2, val);
1169
1170 /* enable i/o and interrupts */
1171 CCRCMD(sc, rc->rc_chan,
1172 CCR_XMTREN | ((cflag & CREAD) ? CCR_RCVREN : CCR_RCVRDIS));
1173 WAITFORCCR(sc, rc->rc_chan);
1174
1175 rc->rc_ier = cflag & CLOCAL ? 0 : IER_CD;
1176 if (cflag & CCTS_OFLOW)
1177 rc->rc_ier |= IER_CTS;
1178 if (cflag & CREAD)
1179 rc->rc_ier |= IER_RxData;
1180 if (tp->t_state & TS_BUSY)
1181 rc->rc_ier |= IER_TxRdy;
1182 if (ts->c_ospeed != 0)
1183 rc_modctl(rc, TIOCM_DTR, DMBIS);
1184 if ((cflag & CCTS_OFLOW) && (rc->rc_msvr & MSVR_CTS))
1185 rc->rc_flags |= RC_SEND_RDY;
1186 rcout(sc, CD180_IER, rc->rc_ier);
1187 (void) splx(s);
1188 return 0;
1189}
1190
1191/* Re-initialize board after bogus interrupts */
1192static void
1193rc_reinit(struct rc_softc *sc)
1194{
1195 struct rc_chans *rc;
1196 int i;
1197
1198 rc_hwreset(sc, RC_FAKEID);
1199 rc = sc->sc_channels;
1200 for (i = 0; i < CD180_NCHAN; i++, rc++)
1201 (void) rc_param(&rc->rc_tp, &rc->rc_tp.t_termios);
1202}
1203
1204static int
1205rcioctl(dev_t dev, u_long cmd, caddr_t data, int flag, d_thread_t *td)
1206{
1207 struct rc_chans *rc;
1208 struct tty *tp;
1209 int s, error;
1210
1211 rc = DEV_TO_RC(dev);
1212 tp = &rc->rc_tp;
1213 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
1214 if (error != ENOIOCTL)
1215 return (error);
1216 error = ttioctl(tp, cmd, data, flag);
1217 disc_optim(tp, &tp->t_termios, rc);
1218 if (error != ENOIOCTL)
1219 return (error);
1220 s = spltty();
1221
1222 switch (cmd) {
1223 case TIOCSBRK:
1224 rc->rc_pendcmd = CD180_C_SBRK;
1225 break;
1226
1227 case TIOCCBRK:
1228 rc->rc_pendcmd = CD180_C_EBRK;
1229 break;
1230
1231 case TIOCSDTR:
1232 (void) rc_modctl(rc, TIOCM_DTR, DMBIS);
1233 break;
1234
1235 case TIOCCDTR:
1236 (void) rc_modctl(rc, TIOCM_DTR, DMBIC);
1237 break;
1238
1239 case TIOCMGET:
1240 *(int *) data = rc_modctl(rc, 0, DMGET);
1241 break;
1242
1243 case TIOCMSET:
1244 (void) rc_modctl(rc, *(int *) data, DMSET);
1245 break;
1246
1247 case TIOCMBIC:
1248 (void) rc_modctl(rc, *(int *) data, DMBIC);
1249 break;
1250
1251 case TIOCMBIS:
1252 (void) rc_modctl(rc, *(int *) data, DMBIS);
1253 break;
1254
1255 case TIOCMSDTRWAIT:
1256 error = suser(td);
1257 if (error != 0) {
1258 splx(s);
1259 return (error);
1260 }
1261 rc->rc_dtrwait = *(int *)data * hz / 100;
1262 break;
1263
1264 case TIOCMGDTRWAIT:
1265 *(int *)data = rc->rc_dtrwait * 100 / hz;
1266 break;
1267
1268 default:
1269 (void) splx(s);
1270 return ENOTTY;
1271 }
1272 (void) splx(s);
1273 return 0;
1274}
1275
1276
1277/* Modem control routines */
1278
1279static int
1280rc_modctl(struct rc_chans *rc, int bits, int cmd)
1281{
1282 struct rc_softc *sc;
1283 u_char *dtr;
1284 u_char msvr;
1285
1286 sc = rc->rc_rcb;
1287 dtr = &sc->sc_dtr;
1288 rcout(sc, CD180_CAR, rc->rc_chan);
1289
1290 switch (cmd) {
1291 case DMSET:
1292 rcout(sc, RC_DTREG, (bits & TIOCM_DTR) ?
1293 ~(*dtr |= 1 << rc->rc_chan) :
1294 ~(*dtr &= ~(1 << rc->rc_chan)));
1295 msvr = rcin(sc, CD180_MSVR);
1296 if (bits & TIOCM_RTS)
1297 msvr |= MSVR_RTS;
1298 else
1299 msvr &= ~MSVR_RTS;
1300 if (bits & TIOCM_DTR)
1301 msvr |= MSVR_DTR;
1302 else
1303 msvr &= ~MSVR_DTR;
1304 rcout(sc, CD180_MSVR, msvr);
1305 break;
1306
1307 case DMBIS:
1308 if (bits & TIOCM_DTR)
1309 rcout(sc, RC_DTREG, ~(*dtr |= 1 << rc->rc_chan));
1310 msvr = rcin(sc, CD180_MSVR);
1311 if (bits & TIOCM_RTS)
1312 msvr |= MSVR_RTS;
1313 if (bits & TIOCM_DTR)
1314 msvr |= MSVR_DTR;
1315 rcout(sc, CD180_MSVR, msvr);
1316 break;
1317
1318 case DMGET:
1319 bits = TIOCM_LE;
1320 msvr = rc->rc_msvr = rcin(sc, CD180_MSVR);
1321
1322 if (msvr & MSVR_RTS)
1323 bits |= TIOCM_RTS;
1324 if (msvr & MSVR_CTS)
1325 bits |= TIOCM_CTS;
1326 if (msvr & MSVR_DSR)
1327 bits |= TIOCM_DSR;
1328 if (msvr & MSVR_DTR)
1329 bits |= TIOCM_DTR;
1330 if (msvr & MSVR_CD)
1331 bits |= TIOCM_CD;
1332 if (~rcin(sc, RC_RIREG) & (1 << rc->rc_chan))
1333 bits |= TIOCM_RI;
1334 return bits;
1335
1336 case DMBIC:
1337 if (bits & TIOCM_DTR)
1338 rcout(sc, RC_DTREG, ~(*dtr &= ~(1 << rc->rc_chan)));
1339 msvr = rcin(sc, CD180_MSVR);
1340 if (bits & TIOCM_RTS)
1341 msvr &= ~MSVR_RTS;
1342 if (bits & TIOCM_DTR)
1343 msvr &= ~MSVR_DTR;
1344 rcout(sc, CD180_MSVR, msvr);
1345 break;
1346 }
1347 rc->rc_msvr = rcin(sc, CD180_MSVR);
1348 return 0;
1349}
1350
1351#define ERR(s) do { \
1352 device_printf(sc->sc_dev, "%s", ""); \
1353 printf s ; \
1354 printf("\n"); \
1355 (void) splx(old_level); \
1356 return 1; \
1357} while (0)
1358
1359/* Test the board. */
1360int
1361rc_test(struct rc_softc *sc)
1362{
1363 int chan = 0;
1364 int i = 0, rcnt, old_level;
1365 unsigned int iack, chipid;
1366 unsigned short divs;
1367 static u_char ctest[] = "\377\125\252\045\244\0\377";
1368#define CTLEN 8
1369
1370 struct rtest {
1371 u_char txbuf[CD180_NFIFO]; /* TX buffer */
1372 u_char rxbuf[CD180_NFIFO]; /* RX buffer */
1373 int rxptr; /* RX pointer */
1374 int txptr; /* TX pointer */
1375 } tchans[CD180_NCHAN];
1376
1377 old_level = spltty();
1378
1379 chipid = RC_FAKEID;
1380
1381 /* First, reset board to inital state */
1382 rc_hwreset(sc, chipid);
1383
1384 divs = RC_BRD(19200);
1385
1386 /* Initialize channels */
1387 for (chan = 0; chan < CD180_NCHAN; chan++) {
1388
1389 /* Select and reset channel */
1390 rcout(sc, CD180_CAR, chan);
1391 CCRCMD(sc, chan, CCR_ResetChan);
1392 WAITFORCCR(sc, chan);
1393
1394 /* Set speed */
1395 rcout(sc, CD180_RBPRL, divs & 0xFF);
1396 rcout(sc, CD180_RBPRH, divs >> 8);
1397 rcout(sc, CD180_TBPRL, divs & 0xFF);
1398 rcout(sc, CD180_TBPRH, divs >> 8);
1399
1400 /* set timeout value */
1401 rcout(sc, CD180_RTPR, 0);
1402
1403 /* Establish local loopback */
1404 rcout(sc, CD180_COR1, COR1_NOPAR | COR1_8BITS | COR1_1SB);
1405 rcout(sc, CD180_COR2, COR2_LLM);
1406 rcout(sc, CD180_COR3, CD180_NFIFO);
1407 CCRCMD(sc, chan, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
1408 CCRCMD(sc, chan, CCR_RCVREN | CCR_XMTREN);
1409 WAITFORCCR(sc, chan);
1410 rcout(sc, CD180_MSVR, MSVR_RTS);
1411
1412 /* Fill TXBUF with test data */
1413 for (i = 0; i < CD180_NFIFO; i++) {
1414 tchans[chan].txbuf[i] = ctest[i];
1415 tchans[chan].rxbuf[i] = 0;
1416 }
1417 tchans[chan].txptr = tchans[chan].rxptr = 0;
1418
1419 /* Now, start transmit */
1420 rcout(sc, CD180_IER, IER_TxMpty|IER_RxData);
1421 }
1422 /* Pseudo-interrupt poll stuff */
1423 for (rcnt = 10000; rcnt-- > 0; rcnt--) {
1424 i = ~(rcin(sc, RC_BSR));
1425 if (i & RC_BSR_TOUT)
1426 ERR(("BSR timeout bit set\n"));
1427 else if (i & RC_BSR_TXINT) {
1428 iack = rcin(sc, RC_PILR_TX);
1429 if (iack != (GIVR_IT_TDI | chipid))
1430 ERR(("Bad TX intr ack (%02x != %02x)\n",
1431 iack, GIVR_IT_TDI | chipid));
1432 chan = (rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH;
1433 /* If no more data to transmit, disable TX intr */
1434 if (tchans[chan].txptr >= CD180_NFIFO) {
1435 iack = rcin(sc, CD180_IER);
1436 rcout(sc, CD180_IER, iack & ~IER_TxMpty);
1437 } else {
1438 for (iack = tchans[chan].txptr;
1439 iack < CD180_NFIFO; iack++)
1440 rcout(sc, CD180_TDR,
1441 tchans[chan].txbuf[iack]);
1442 tchans[chan].txptr = iack;
1443 }
1444 rcout(sc, CD180_EOIR, 0);
1445 } else if (i & RC_BSR_RXINT) {
1446 u_char ucnt;
1447
1448 iack = rcin(sc, RC_PILR_RX);
1449 if (iack != (GIVR_IT_RGDI | chipid) &&
1450 iack != (GIVR_IT_REI | chipid))
1451 ERR(("Bad RX intr ack (%02x != %02x)\n",
1452 iack, GIVR_IT_RGDI | chipid));
1453 chan = (rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH;
1454 ucnt = rcin(sc, CD180_RDCR) & 0xF;
1455 while (ucnt-- > 0) {
1456 iack = rcin(sc, CD180_RCSR);
1457 if (iack & RCSR_Timeout)
1458 break;
1459 if (iack & 0xF)
1460 ERR(("Bad char chan %d (RCSR = %02X)\n",
1461 chan, iack));
1462 if (tchans[chan].rxptr > CD180_NFIFO)
1463 ERR(("Got extra chars chan %d\n",
1464 chan));
1465 tchans[chan].rxbuf[tchans[chan].rxptr++] =
1466 rcin(sc, CD180_RDR);
1467 }
1468 rcout(sc, CD180_EOIR, 0);
1469 }
1470 rcout(sc, RC_CTOUT, 0);
1471 for (iack = chan = 0; chan < CD180_NCHAN; chan++)
1472 if (tchans[chan].rxptr >= CD180_NFIFO)
1473 iack++;
1474 if (iack == CD180_NCHAN)
1475 break;
1476 }
1477 for (chan = 0; chan < CD180_NCHAN; chan++) {
1478 /* Select and reset channel */
1479 rcout(sc, CD180_CAR, chan);
1480 CCRCMD(sc, chan, CCR_ResetChan);
1481 }
1482
1483 if (!rcnt)
1484 ERR(("looses characters during local loopback\n"));
1485 /* Now, check data */
1486 for (chan = 0; chan < CD180_NCHAN; chan++)
1487 for (i = 0; i < CD180_NFIFO; i++)
1488 if (ctest[i] != tchans[chan].rxbuf[i])
1489 ERR(("data mismatch chan %d ptr %d (%d != %d)\n",
1490 chan, i, ctest[i], tchans[chan].rxbuf[i]));
1491 (void) splx(old_level);
1492 return 0;
1493}
1494
1495#ifdef RCDEBUG
1496static void
1497printrcflags(struct rc_chans *rc, char *comment)
1498{
1499 struct rc_softc *sc;
1500 u_short f = rc->rc_flags;
1501
1502 sc = rc->rc_rcb;
1503 printf("rc%d/%d: %s flags: %s%s%s%s%s%s%s%s%s%s%s%s\n",
1504 rc->rc_rcb->rcb_unit, rc->rc_chan, comment,
1505 (f & RC_DTR_OFF)?"DTR_OFF " :"",
1506 (f & RC_ACTOUT) ?"ACTOUT " :"",
1507 (f & RC_RTSFLOW)?"RTSFLOW " :"",
1508 (f & RC_CTSFLOW)?"CTSFLOW " :"",
1509 (f & RC_DORXFER)?"DORXFER " :"",
1510 (f & RC_DOXXFER)?"DOXXFER " :"",
1511 (f & RC_MODCHG) ?"MODCHG " :"",
1512 (f & RC_OSUSP) ?"OSUSP " :"",
1513 (f & RC_OSBUSY) ?"OSBUSY " :"",
1514 (f & RC_WAS_BUFOVFL) ?"BUFOVFL " :"",
1515 (f & RC_WAS_SILOVFL) ?"SILOVFL " :"",
1516 (f & RC_SEND_RDY) ?"SEND_RDY":"");
1517
1518 rcout(sc, CD180_CAR, rc->rc_chan);
1519
1520 printf("rc%d/%d: msvr %02x ier %02x ccsr %02x\n",
1521 rc->rc_rcb->rcb_unit, rc->rc_chan,
1522 rcin(sc, CD180_MSVR),
1523 rcin(sc, CD180_IER),
1524 rcin(sc, CD180_CCSR));
1525}
1526#endif /* RCDEBUG */
1527
1528static void
1529rc_dtrwakeup(void *arg)
1530{
1531 struct rc_chans *rc;
1532
1533 rc = (struct rc_chans *)arg;
1534 rc->rc_flags &= ~RC_DTR_OFF;
1535 wakeup(&rc->rc_dtrwait);
1536}
1537
1538static void
1539rc_discard_output(struct rc_chans *rc)
1540{
1541 critical_enter();
1542 if (rc->rc_flags & RC_DOXXFER) {
1543 rc->rc_rcb->sc_scheduled_event -= LOTS_OF_EVENTS;
1544 rc->rc_flags &= ~RC_DOXXFER;
1545 }
1546 rc->rc_optr = rc->rc_obufend;
1547 rc->rc_tp.t_state &= ~TS_BUSY;
1548 critical_exit();
1549 ttwwakeup(&rc->rc_tp);
1550}
1551
1552static void
1553disc_optim(struct tty *tp, struct termios *t, struct rc_chans *rc)
1554{
1555
1556 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))
1557 && (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK))
1558 && (!(t->c_iflag & PARMRK)
1559 || (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))
1560 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))
1561 && linesw[tp->t_line].l_rint == ttyinput)
1562 tp->t_state |= TS_CAN_BYPASS_L_RINT;
1563 else
1564 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
1565 rc->rc_hotchar = linesw[tp->t_line].l_hotchar;
1566}
1567
1568static void
1569rc_wait0(struct rc_softc *sc, int chan, int line)
1570{
1571 int rcnt;
1572
1573 for (rcnt = 50; rcnt && rcin(sc, CD180_CCR); rcnt--)
1574 DELAY(30);
1575 if (rcnt == 0)
1576 device_printf(sc->sc_dev,
1577 "channel %d command timeout, rc.c line: %d\n", chan, line);
1578}
1579
1580static device_method_t rc_methods[] = {
1581 /* Device interface */
1582 DEVMETHOD(device_probe, rc_probe),
1583 DEVMETHOD(device_attach, rc_attach),
1584 DEVMETHOD(device_detach, rc_detach),
1585 { 0, 0 }
1586};
1587
1588static driver_t rc_driver = {
1589 "rc",
1590 rc_methods, sizeof(struct rc_softc),
1591};
1592
1593DRIVER_MODULE(rc, isa, rc_driver, rc_devclass, 0, 0);
| 40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/bus.h>
43#include <sys/conf.h>
44#include <sys/fcntl.h>
45#include <sys/interrupt.h>
46#include <sys/kernel.h>
47#include <sys/malloc.h>
48#include <sys/tty.h>
49#include <machine/bus.h>
50#include <machine/resource.h>
51#include <sys/rman.h>
52
53#include <dev/ic/cd180.h>
54#include <dev/rc/rcreg.h>
55#include <isa/isavar.h>
56
57#define IOBASE_ADDRS 14
58
59#define DEV_TO_RC(dev) (struct rc_chans *)((dev)->si_drv1)
60#define TTY_TO_RC(tty) DEV_TO_RC((tty)->t_dev)
61
62#define rcin(sc, port) RC_IN(sc, port)
63#define rcout(sc, port, v) RC_OUT(sc, port, v)
64
65#define WAITFORCCR(sc, chan) rc_wait0((sc), (chan), __LINE__)
66
67#define CCRCMD(sc, chan, cmd) do { \
68 WAITFORCCR((sc), (chan)); \
69 rcout((sc), CD180_CCR, (cmd)); \
70} while (0)
71
72#define RC_IBUFSIZE 256
73#define RB_I_HIGH_WATER (TTYHOG - 2 * RC_IBUFSIZE)
74#define RC_OBUFSIZE 512
75#define RC_IHIGHWATER (3 * RC_IBUFSIZE / 4)
76#define INPUT_FLAGS_SHIFT (2 * RC_IBUFSIZE)
77#define LOTS_OF_EVENTS 64
78
79#define RC_FAKEID 0x10
80
81#define CALLOUT(dev) (((intptr_t)(dev)->si_drv2) != 0)
82
83/* Per-channel structure */
84struct rc_chans {
85 struct rc_softc *rc_rcb; /* back ptr */
86 dev_t rc_dev; /* non-callout device */
87 dev_t rc_cdev; /* callout device */
88 u_short rc_flags; /* Misc. flags */
89 int rc_chan; /* Channel # */
90 u_char rc_ier; /* intr. enable reg */
91 u_char rc_msvr; /* modem sig. status */
92 u_char rc_cor2; /* options reg */
93 u_char rc_pendcmd; /* special cmd pending */
94 u_int rc_dtrwait; /* dtr timeout */
95 u_int rc_dcdwaits; /* how many waits DCD in open */
96 u_char rc_hotchar; /* end packed optimize */
97 struct tty rc_tp; /* tty struct */
98 u_char *rc_iptr; /* Chars input buffer */
99 u_char *rc_hiwat; /* hi-water mark */
100 u_char *rc_bufend; /* end of buffer */
101 u_char *rc_optr; /* ptr in output buf */
102 u_char *rc_obufend; /* end of output buf */
103 u_char rc_ibuf[4 * RC_IBUFSIZE]; /* input buffer */
104 u_char rc_obuf[RC_OBUFSIZE]; /* output buffer */
105 struct callout rc_dtrcallout;
106};
107
108/* Per-board structure */
109struct rc_softc {
110 device_t sc_dev;
111 struct resource *sc_irq;
112 struct resource *sc_port[IOBASE_ADDRS];
113 int sc_irqrid;
114 void *sc_hwicookie;
115 bus_space_tag_t sc_bt;
116 bus_space_handle_t sc_bh;
117 u_int sc_unit; /* unit # */
118 u_char sc_dtr; /* DTR status */
119 int sc_opencount;
120 int sc_scheduled_event;
121 void *sc_swicookie;
122 struct rc_chans sc_channels[CD180_NCHAN]; /* channels */
123};
124
125/* Static prototypes */
126static void rc_release_resources(device_t dev);
127static void rc_intr(void *);
128static void rc_hwreset(struct rc_softc *, unsigned int);
129static int rc_test(struct rc_softc *);
130static void rc_discard_output(struct rc_chans *);
131static void rc_hardclose(struct rc_chans *);
132static int rc_modctl(struct rc_chans *, int, int);
133static void rc_start(struct tty *);
134static void rc_stop(struct tty *, int rw);
135static int rc_param(struct tty *, struct termios *);
136static void rc_pollcard(void *);
137static void rc_reinit(struct rc_softc *);
138#ifdef RCDEBUG
139static void printrcflags();
140#endif
141static void rc_dtrwakeup(void *);
142static void disc_optim(struct tty *tp, struct termios *t, struct rc_chans *);
143static void rc_wait0(struct rc_softc *sc, int chan, int line);
144
145static d_open_t rcopen;
146static d_close_t rcclose;
147static d_ioctl_t rcioctl;
148
149#define CDEV_MAJOR 63
150static struct cdevsw rc_cdevsw = {
151 .d_open = rcopen,
152 .d_close = rcclose,
153 .d_read = ttyread,
154 .d_write = ttywrite,
155 .d_ioctl = rcioctl,
156 .d_poll = ttypoll,
157 .d_name = "rc",
158 .d_maj = CDEV_MAJOR,
159 .d_flags = D_TTY,
160 .d_kqfilter = ttykqfilter,
161};
162
163static devclass_t rc_devclass;
164
165/* Flags */
166#define RC_DTR_OFF 0x0001 /* DTR wait, for close/open */
167#define RC_ACTOUT 0x0002 /* Dial-out port active */
168#define RC_RTSFLOW 0x0004 /* RTS flow ctl enabled */
169#define RC_CTSFLOW 0x0008 /* CTS flow ctl enabled */
170#define RC_DORXFER 0x0010 /* RXFER event planned */
171#define RC_DOXXFER 0x0020 /* XXFER event planned */
172#define RC_MODCHG 0x0040 /* Modem status changed */
173#define RC_OSUSP 0x0080 /* Output suspended */
174#define RC_OSBUSY 0x0100 /* start() routine in progress */
175#define RC_WAS_BUFOVFL 0x0200 /* low-level buffer ovferflow */
176#define RC_WAS_SILOVFL 0x0400 /* silo buffer overflow */
177#define RC_SEND_RDY 0x0800 /* ready to send */
178
179/* Table for translation of RCSR status bits to internal form */
180static int rc_rcsrt[16] = {
181 0, TTY_OE, TTY_FE,
182 TTY_FE|TTY_OE, TTY_PE, TTY_PE|TTY_OE,
183 TTY_PE|TTY_FE, TTY_PE|TTY_FE|TTY_OE, TTY_BI,
184 TTY_BI|TTY_OE, TTY_BI|TTY_FE, TTY_BI|TTY_FE|TTY_OE,
185 TTY_BI|TTY_PE, TTY_BI|TTY_PE|TTY_OE, TTY_BI|TTY_PE|TTY_FE,
186 TTY_BI|TTY_PE|TTY_FE|TTY_OE
187};
188
189static int rc_ports[] =
190 { 0x220, 0x240, 0x250, 0x260, 0x2a0, 0x2b0, 0x300, 0x320 };
191static int iobase_addrs[IOBASE_ADDRS] =
192 { 0, 0x400, 0x800, 0xc00, 0x1400, 0x1800, 0x1c00, 0x2000,
193 0x3000, 0x3400, 0x3800, 0x3c00, 0x4000, 0x8000 };
194
195/**********************************************/
196
197static int
198rc_probe(device_t dev)
199{
200 u_int port;
201 int i, found;
202
203 /*
204 * We don't know of any PnP ID's for these cards.
205 */
206 if (isa_get_logicalid(dev) != 0)
207 return (ENXIO);
208
209 /*
210 * We have to have an IO port hint that is valid.
211 */
212 port = isa_get_port(dev);
213 if (port == -1)
214 return (ENXIO);
215 found = 0;
216 for (i = 0; i < sizeof(rc_ports) / sizeof(int); i++)
217 if (rc_ports[i] == port) {
218 found = 1;
219 break;
220 }
221 if (!found)
222 return (ENXIO);
223
224 /*
225 * We have to have an IRQ hint.
226 */
227 if (isa_get_irq(dev) == -1)
228 return (ENXIO);
229
230 device_set_desc(dev, "SDL Riscom/8");
231 return (0);
232}
233
234static int
235rc_attach(device_t dev)
236{
237 struct rc_chans *rc;
238 struct tty *tp;
239 struct rc_softc *sc;
240 u_int port;
241 int base, chan, error, i, x;
242 dev_t cdev;
243
244 sc = device_get_softc(dev);
245 sc->sc_dev = dev;
246
247 /*
248 * We need to have IO ports. Lots of them. We need
249 * the following ranges relative to the base port:
250 * 0x0 - 0x10
251 * 0x400 - 0x410
252 * 0x800 - 0x810
253 * 0xc00 - 0xc10
254 * 0x1400 - 0x1410
255 * 0x1800 - 0x1810
256 * 0x1c00 - 0x1c10
257 * 0x2000 - 0x2010
258 * 0x3000 - 0x3010
259 * 0x3400 - 0x3410
260 * 0x3800 - 0x3810
261 * 0x3c00 - 0x3c10
262 * 0x4000 - 0x4010
263 * 0x8000 - 0x8010
264 */
265 port = isa_get_port(dev);
266 for (i = 0; i < IOBASE_ADDRS; i++)
267 if (bus_set_resource(dev, SYS_RES_IOPORT, i,
268 port + iobase_addrs[i], 0x10) != 0)
269 return (ENXIO);
270 error = ENOMEM;
271 for (i = 0; i < IOBASE_ADDRS; i++) {
272 x = i;
273 sc->sc_port[i] = bus_alloc_resource(dev, SYS_RES_IOPORT, &x,
274 0ul, ~0ul, 0x10, RF_ACTIVE);
275 if (x != i) {
276 device_printf(dev, "ioport %d was rid %d\n", i, x);
277 goto fail;
278 }
279 if (sc->sc_port[i] == NULL) {
280 device_printf(dev, "failed to alloc ioports %x-%x\n",
281 port + iobase_addrs[i],
282 port + iobase_addrs[i] + 0x10);
283 goto fail;
284 }
285 }
286 sc->sc_bt = rman_get_bustag(sc->sc_port[0]);
287 sc->sc_bh = rman_get_bushandle(sc->sc_port[0]);
288
289 sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->sc_irqrid,
290 0ul, ~0ul, 1, RF_ACTIVE);
291 if (sc->sc_irq == NULL) {
292 device_printf(dev, "failed to alloc IRQ\n");
293 goto fail;
294 }
295
296 /*
297 * Now do some actual tests to make sure it works.
298 */
299 error = ENXIO;
300 rcout(sc, CD180_PPRL, 0x22); /* Random values to Prescale reg. */
301 rcout(sc, CD180_PPRH, 0x11);
302 if (rcin(sc, CD180_PPRL) != 0x22 || rcin(sc, CD180_PPRH) != 0x11)
303 goto fail;
304 if (rc_test(sc))
305 goto fail;
306
307 /*
308 * Ok, start actually hooking things up.
309 */
310 sc->sc_unit = device_get_unit(dev);
311 /*sc->sc_chipid = 0x10 + device_get_unit(dev);*/
312 device_printf(dev, "%d chans, firmware rev. %c\n",
313 CD180_NCHAN, (rcin(sc, CD180_GFRCR) & 0xF) + 'A');
314 rc = sc->sc_channels;
315 base = CD180_NCHAN * sc->sc_unit;
316 for (chan = 0; chan < CD180_NCHAN; chan++, rc++) {
317 rc->rc_rcb = sc;
318 rc->rc_chan = chan;
319 rc->rc_iptr = rc->rc_ibuf;
320 rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE];
321 rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER];
322 rc->rc_optr = rc->rc_obufend = rc->rc_obuf;
323 rc->rc_dtrwait = 3 * hz;
324 callout_init(&rc->rc_dtrcallout, 0);
325 tp = &rc->rc_tp;
326 ttychars(tp);
327 tp->t_lflag = tp->t_iflag = tp->t_oflag = 0;
328 tp->t_cflag = TTYDEF_CFLAG;
329 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
330 cdev = make_dev(&rc_cdevsw, chan + base,
331 UID_ROOT, GID_WHEEL, 0600, "ttym%d", chan + base);
332 cdev->si_drv1 = rc;
333 cdev->si_drv2 = 0;
334 cdev->si_tty = tp;
335 rc->rc_dev = cdev;
336 cdev = make_dev(&rc_cdevsw, chan + base + 128,
337 UID_UUCP, GID_DIALER, 0660, "cuam%d", chan + base);
338 cdev->si_drv1 = rc;
339 cdev->si_drv2 = (void *)1;
340 cdev->si_tty = tp;
341 rc->rc_cdev = cdev;
342 }
343
344 error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_TTY, rc_intr, sc,
345 &sc->sc_hwicookie);
346 if (error) {
347 device_printf(dev, "failed to register interrupt handler\n");
348 goto fail;
349 }
350
351 swi_add(&tty_ithd, "tty:rc", rc_pollcard, sc, SWI_TTY, 0,
352 &sc->sc_swicookie);
353 return (0);
354
355fail:
356 rc_release_resources(dev);
357 return (error);
358}
359
360static int
361rc_detach(device_t dev)
362{
363 struct rc_softc *sc;
364 struct rc_chans *rc;
365 int error, i, s;
366
367 sc = device_get_softc(dev);
368 if (sc->sc_opencount > 0)
369 return (EBUSY);
370 sc->sc_opencount = -1;
371
372 rc = sc->sc_channels;
373 for (i = 0; i < CD180_NCHAN; i++, rc++) {
374 destroy_dev(rc->rc_dev);
375 destroy_dev(rc->rc_cdev);
376 }
377
378 rc = sc->sc_channels;
379 s = splsoftclock();
380 for (i = 0; i < CD180_NCHAN; i++) {
381 if ((rc->rc_flags & RC_DTR_OFF) &&
382 !callout_stop(&rc->rc_dtrcallout))
383 tsleep(&rc->rc_dtrwait, TTIPRI, "rcdtrdet", 0);
384 }
385
386 error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_hwicookie);
387 if (error)
388 device_printf(dev, "failed to deregister interrupt handler\n");
389 ithread_remove_handler(sc->sc_swicookie);
390 rc_release_resources(dev);
391
392 return (0);
393}
394
395static void
396rc_release_resources(device_t dev)
397{
398 struct rc_softc *sc;
399 int i;
400
401 sc = device_get_softc(dev);
402 if (sc->sc_irq != NULL) {
403 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid,
404 sc->sc_irq);
405 sc->sc_irq = NULL;
406 }
407 for (i = 0; i < IOBASE_ADDRS; i++) {
408 if (sc->sc_port[i] == NULL)
409 break;
410 bus_release_resource(dev, SYS_RES_IOPORT, i, sc->sc_port[i]);
411 sc->sc_port[i] = NULL;
412 }
413}
414
415/* RC interrupt handling */
416static void
417rc_intr(void *arg)
418{
419 struct rc_softc *sc;
420 struct rc_chans *rc;
421 int resid, chan;
422 u_char val, iack, bsr, ucnt, *optr;
423 int good_data, t_state;
424
425 sc = (struct rc_softc *)arg;
426 bsr = ~(rcin(sc, RC_BSR));
427 if (!(bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT))) {
428 device_printf(sc->sc_dev, "extra interrupt\n");
429 rcout(sc, CD180_EOIR, 0);
430 return;
431 }
432
433 while (bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT)) {
434#ifdef RCDEBUG_DETAILED
435 device_printf(sc->sc_dev, "intr (%p) %s%s%s%s\n", arg, bsr,
436 (bsr & RC_BSR_TOUT)?"TOUT ":"",
437 (bsr & RC_BSR_RXINT)?"RXINT ":"",
438 (bsr & RC_BSR_TXINT)?"TXINT ":"",
439 (bsr & RC_BSR_MOINT)?"MOINT":"");
440#endif
441 if (bsr & RC_BSR_TOUT) {
442 device_printf(sc->sc_dev,
443 "hardware failure, reset board\n");
444 rcout(sc, RC_CTOUT, 0);
445 rc_reinit(sc);
446 return;
447 }
448 if (bsr & RC_BSR_RXINT) {
449 iack = rcin(sc, RC_PILR_RX);
450 good_data = (iack == (GIVR_IT_RGDI | RC_FAKEID));
451 if (!good_data && iack != (GIVR_IT_REI | RC_FAKEID)) {
452 device_printf(sc->sc_dev,
453 "fake rxint: %02x\n", iack);
454 goto more_intrs;
455 }
456 chan = ((rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH);
457 rc = &sc->sc_channels[chan];
458 t_state = rc->rc_tp.t_state;
459 /* Do RTS flow control stuff */
460 if ( (rc->rc_flags & RC_RTSFLOW)
461 || !(t_state & TS_ISOPEN)
462 ) {
463 if ( ( !(t_state & TS_ISOPEN)
464 || (t_state & TS_TBLOCK)
465 )
466 && (rc->rc_msvr & MSVR_RTS)
467 )
468 rcout(sc, CD180_MSVR,
469 rc->rc_msvr &= ~MSVR_RTS);
470 else if (!(rc->rc_msvr & MSVR_RTS))
471 rcout(sc, CD180_MSVR,
472 rc->rc_msvr |= MSVR_RTS);
473 }
474 ucnt = rcin(sc, CD180_RDCR) & 0xF;
475 resid = 0;
476
477 if (t_state & TS_ISOPEN) {
478 /* check for input buffer overflow */
479 if ((rc->rc_iptr + ucnt) >= rc->rc_bufend) {
480 resid = ucnt;
481 ucnt = rc->rc_bufend - rc->rc_iptr;
482 resid -= ucnt;
483 if (!(rc->rc_flags & RC_WAS_BUFOVFL)) {
484 rc->rc_flags |= RC_WAS_BUFOVFL;
485 sc->sc_scheduled_event++;
486 }
487 }
488 optr = rc->rc_iptr;
489 /* check foor good data */
490 if (good_data) {
491 while (ucnt-- > 0) {
492 val = rcin(sc, CD180_RDR);
493 optr[0] = val;
494 optr[INPUT_FLAGS_SHIFT] = 0;
495 optr++;
496 sc->sc_scheduled_event++;
497 if (val != 0 && val == rc->rc_hotchar)
498 swi_sched(sc->sc_swicookie, 0);
499 }
500 } else {
501 /* Store also status data */
502 while (ucnt-- > 0) {
503 iack = rcin(sc, CD180_RCSR);
504 if (iack & RCSR_Timeout)
505 break;
506 if ( (iack & RCSR_OE)
507 && !(rc->rc_flags & RC_WAS_SILOVFL)) {
508 rc->rc_flags |= RC_WAS_SILOVFL;
509 sc->sc_scheduled_event++;
510 }
511 val = rcin(sc, CD180_RDR);
512 /*
513 Don't store PE if IGNPAR and BREAK if IGNBRK,
514 this hack allows "raw" tty optimization
515 works even if IGN* is set.
516 */
517 if ( !(iack & (RCSR_PE|RCSR_FE|RCSR_Break))
518 || ((!(iack & (RCSR_PE|RCSR_FE))
519 || !(rc->rc_tp.t_iflag & IGNPAR))
520 && (!(iack & RCSR_Break)
521 || !(rc->rc_tp.t_iflag & IGNBRK)))) {
522 if ( (iack & (RCSR_PE|RCSR_FE))
523 && (t_state & TS_CAN_BYPASS_L_RINT)
524 && ((iack & RCSR_FE)
525 || ((iack & RCSR_PE)
526 && (rc->rc_tp.t_iflag & INPCK))))
527 val = 0;
528 else if (val != 0 && val == rc->rc_hotchar)
529 swi_sched(sc->sc_swicookie, 0);
530 optr[0] = val;
531 optr[INPUT_FLAGS_SHIFT] = iack;
532 optr++;
533 sc->sc_scheduled_event++;
534 }
535 }
536 }
537 rc->rc_iptr = optr;
538 rc->rc_flags |= RC_DORXFER;
539 } else
540 resid = ucnt;
541 /* Clear FIFO if necessary */
542 while (resid-- > 0) {
543 if (!good_data)
544 iack = rcin(sc, CD180_RCSR);
545 else
546 iack = 0;
547 if (iack & RCSR_Timeout)
548 break;
549 (void) rcin(sc, CD180_RDR);
550 }
551 goto more_intrs;
552 }
553 if (bsr & RC_BSR_MOINT) {
554 iack = rcin(sc, RC_PILR_MODEM);
555 if (iack != (GIVR_IT_MSCI | RC_FAKEID)) {
556 device_printf(sc->sc_dev, "fake moint: %02x\n",
557 iack);
558 goto more_intrs;
559 }
560 chan = ((rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH);
561 rc = &sc->sc_channels[chan];
562 iack = rcin(sc, CD180_MCR);
563 rc->rc_msvr = rcin(sc, CD180_MSVR);
564 rcout(sc, CD180_MCR, 0);
565#ifdef RCDEBUG
566 printrcflags(rc, "moint");
567#endif
568 if (rc->rc_flags & RC_CTSFLOW) {
569 if (rc->rc_msvr & MSVR_CTS)
570 rc->rc_flags |= RC_SEND_RDY;
571 else
572 rc->rc_flags &= ~RC_SEND_RDY;
573 } else
574 rc->rc_flags |= RC_SEND_RDY;
575 if ((iack & MCR_CDchg) && !(rc->rc_flags & RC_MODCHG)) {
576 sc->sc_scheduled_event += LOTS_OF_EVENTS;
577 rc->rc_flags |= RC_MODCHG;
578 swi_sched(sc->sc_swicookie, 0);
579 }
580 goto more_intrs;
581 }
582 if (bsr & RC_BSR_TXINT) {
583 iack = rcin(sc, RC_PILR_TX);
584 if (iack != (GIVR_IT_TDI | RC_FAKEID)) {
585 device_printf(sc->sc_dev, "fake txint: %02x\n",
586 iack);
587 goto more_intrs;
588 }
589 chan = ((rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH);
590 rc = &sc->sc_channels[chan];
591 if ( (rc->rc_flags & RC_OSUSP)
592 || !(rc->rc_flags & RC_SEND_RDY)
593 )
594 goto more_intrs;
595 /* Handle breaks and other stuff */
596 if (rc->rc_pendcmd) {
597 rcout(sc, CD180_COR2, rc->rc_cor2 |= COR2_ETC);
598 rcout(sc, CD180_TDR, CD180_C_ESC);
599 rcout(sc, CD180_TDR, rc->rc_pendcmd);
600 rcout(sc, CD180_COR2, rc->rc_cor2 &= ~COR2_ETC);
601 rc->rc_pendcmd = 0;
602 goto more_intrs;
603 }
604 optr = rc->rc_optr;
605 resid = rc->rc_obufend - optr;
606 if (resid > CD180_NFIFO)
607 resid = CD180_NFIFO;
608 while (resid-- > 0)
609 rcout(sc, CD180_TDR, *optr++);
610 rc->rc_optr = optr;
611
612 /* output completed? */
613 if (optr >= rc->rc_obufend) {
614 rcout(sc, CD180_IER, rc->rc_ier &= ~IER_TxRdy);
615#ifdef RCDEBUG
616 device_printf(sc->sc_dev,
617 "channel %d: output completed\n",
618 rc->rc_chan);
619#endif
620 if (!(rc->rc_flags & RC_DOXXFER)) {
621 sc->sc_scheduled_event += LOTS_OF_EVENTS;
622 rc->rc_flags |= RC_DOXXFER;
623 swi_sched(sc->sc_swicookie, 0);
624 }
625 }
626 }
627 more_intrs:
628 rcout(sc, CD180_EOIR, 0); /* end of interrupt */
629 rcout(sc, RC_CTOUT, 0);
630 bsr = ~(rcin(sc, RC_BSR));
631 }
632}
633
634/* Feed characters to output buffer */
635static void
636rc_start(struct tty *tp)
637{
638 struct rc_softc *sc;
639 struct rc_chans *rc;
640 int s;
641
642 rc = TTY_TO_RC(tp);
643 if (rc->rc_flags & RC_OSBUSY)
644 return;
645 sc = rc->rc_rcb;
646 s = spltty();
647 rc->rc_flags |= RC_OSBUSY;
648 critical_enter();
649 if (tp->t_state & TS_TTSTOP)
650 rc->rc_flags |= RC_OSUSP;
651 else
652 rc->rc_flags &= ~RC_OSUSP;
653 /* Do RTS flow control stuff */
654 if ( (rc->rc_flags & RC_RTSFLOW)
655 && (tp->t_state & TS_TBLOCK)
656 && (rc->rc_msvr & MSVR_RTS)
657 ) {
658 rcout(sc, CD180_CAR, rc->rc_chan);
659 rcout(sc, CD180_MSVR, rc->rc_msvr &= ~MSVR_RTS);
660 } else if (!(rc->rc_msvr & MSVR_RTS)) {
661 rcout(sc, CD180_CAR, rc->rc_chan);
662 rcout(sc, CD180_MSVR, rc->rc_msvr |= MSVR_RTS);
663 }
664 critical_exit();
665 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
666 goto out;
667#ifdef RCDEBUG
668 printrcflags(rc, "rcstart");
669#endif
670 ttwwakeup(tp);
671#ifdef RCDEBUG
672 printf("rcstart: outq = %d obuf = %d\n",
673 tp->t_outq.c_cc, rc->rc_obufend - rc->rc_optr);
674#endif
675 if (tp->t_state & TS_BUSY)
676 goto out; /* output still in progress ... */
677
678 if (tp->t_outq.c_cc > 0) {
679 u_int ocnt;
680
681 tp->t_state |= TS_BUSY;
682 ocnt = q_to_b(&tp->t_outq, rc->rc_obuf, sizeof rc->rc_obuf);
683 critical_enter();
684 rc->rc_optr = rc->rc_obuf;
685 rc->rc_obufend = rc->rc_optr + ocnt;
686 critical_exit();
687 if (!(rc->rc_ier & IER_TxRdy)) {
688#ifdef RCDEBUG
689 device_printf(sc->sc_dev,
690 "channel %d: rcstart enable txint\n", rc->rc_chan);
691#endif
692 rcout(sc, CD180_CAR, rc->rc_chan);
693 rcout(sc, CD180_IER, rc->rc_ier |= IER_TxRdy);
694 }
695 }
696out:
697 rc->rc_flags &= ~RC_OSBUSY;
698 (void) splx(s);
699}
700
701/* Handle delayed events. */
702void
703rc_pollcard(void *arg)
704{
705 struct rc_softc *sc;
706 struct rc_chans *rc;
707 struct tty *tp;
708 u_char *tptr, *eptr;
709 int chan, icnt;
710
711 sc = (struct rc_softc *)arg;
712 if (sc->sc_scheduled_event == 0)
713 return;
714 do {
715 rc = sc->sc_channels;
716 for (chan = 0; chan < CD180_NCHAN; rc++, chan++) {
717 tp = &rc->rc_tp;
718#ifdef RCDEBUG
719 if (rc->rc_flags & (RC_DORXFER|RC_DOXXFER|RC_MODCHG|
720 RC_WAS_BUFOVFL|RC_WAS_SILOVFL))
721 printrcflags(rc, "rcevent");
722#endif
723 if (rc->rc_flags & RC_WAS_BUFOVFL) {
724 critical_enter();
725 rc->rc_flags &= ~RC_WAS_BUFOVFL;
726 sc->sc_scheduled_event--;
727 critical_exit();
728 device_printf(sc->sc_dev,
729 "channel %d: interrupt-level buffer overflow\n",
730 chan);
731 }
732 if (rc->rc_flags & RC_WAS_SILOVFL) {
733 critical_enter();
734 rc->rc_flags &= ~RC_WAS_SILOVFL;
735 sc->sc_scheduled_event--;
736 critical_exit();
737 device_printf(sc->sc_dev,
738 "channel %d: silo overflow\n", chan);
739 }
740 if (rc->rc_flags & RC_MODCHG) {
741 critical_enter();
742 rc->rc_flags &= ~RC_MODCHG;
743 sc->sc_scheduled_event -= LOTS_OF_EVENTS;
744 critical_exit();
745 (*linesw[tp->t_line].l_modem)(tp, !!(rc->rc_msvr & MSVR_CD));
746 }
747 if (rc->rc_flags & RC_DORXFER) {
748 critical_enter();
749 rc->rc_flags &= ~RC_DORXFER;
750 eptr = rc->rc_iptr;
751 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE])
752 tptr = &rc->rc_ibuf[RC_IBUFSIZE];
753 else
754 tptr = rc->rc_ibuf;
755 icnt = eptr - tptr;
756 if (icnt > 0) {
757 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) {
758 rc->rc_iptr = rc->rc_ibuf;
759 rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE];
760 rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER];
761 } else {
762 rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE];
763 rc->rc_bufend = &rc->rc_ibuf[2 * RC_IBUFSIZE];
764 rc->rc_hiwat =
765 &rc->rc_ibuf[RC_IBUFSIZE + RC_IHIGHWATER];
766 }
767 if ( (rc->rc_flags & RC_RTSFLOW)
768 && (tp->t_state & TS_ISOPEN)
769 && !(tp->t_state & TS_TBLOCK)
770 && !(rc->rc_msvr & MSVR_RTS)
771 ) {
772 rcout(sc, CD180_CAR, chan);
773 rcout(sc, CD180_MSVR,
774 rc->rc_msvr |= MSVR_RTS);
775 }
776 sc->sc_scheduled_event -= icnt;
777 }
778 critical_exit();
779
780 if (icnt <= 0 || !(tp->t_state & TS_ISOPEN))
781 goto done1;
782
783 if ( (tp->t_state & TS_CAN_BYPASS_L_RINT)
784 && !(tp->t_state & TS_LOCAL)) {
785 if ((tp->t_rawq.c_cc + icnt) >= RB_I_HIGH_WATER
786 && ((rc->rc_flags & RC_RTSFLOW) || (tp->t_iflag & IXOFF))
787 && !(tp->t_state & TS_TBLOCK))
788 ttyblock(tp);
789 tk_nin += icnt;
790 tk_rawcc += icnt;
791 tp->t_rawcc += icnt;
792 if (b_to_q(tptr, icnt, &tp->t_rawq))
793 device_printf(sc->sc_dev,
794 "channel %d: tty-level buffer overflow\n",
795 chan);
796 ttwakeup(tp);
797 if ((tp->t_state & TS_TTSTOP) && ((tp->t_iflag & IXANY)
798 || (tp->t_cc[VSTART] == tp->t_cc[VSTOP]))) {
799 tp->t_state &= ~TS_TTSTOP;
800 tp->t_lflag &= ~FLUSHO;
801 rc_start(tp);
802 }
803 } else {
804 for (; tptr < eptr; tptr++)
805 (*linesw[tp->t_line].l_rint)
806 (tptr[0] |
807 rc_rcsrt[tptr[INPUT_FLAGS_SHIFT] & 0xF], tp);
808 }
809done1: ;
810 }
811 if (rc->rc_flags & RC_DOXXFER) {
812 critical_enter();
813 sc->sc_scheduled_event -= LOTS_OF_EVENTS;
814 rc->rc_flags &= ~RC_DOXXFER;
815 rc->rc_tp.t_state &= ~TS_BUSY;
816 critical_exit();
817 (*linesw[tp->t_line].l_start)(tp);
818 }
819 if (sc->sc_scheduled_event == 0)
820 break;
821 }
822 } while (sc->sc_scheduled_event >= LOTS_OF_EVENTS);
823}
824
825static void
826rc_stop(struct tty *tp, int rw)
827{
828 struct rc_softc *sc;
829 struct rc_chans *rc;
830 u_char *tptr, *eptr;
831
832 rc = TTY_TO_RC(tp);
833 sc = rc->rc_rcb;
834#ifdef RCDEBUG
835 device_printf(sc->sc_dev, "channel %d: rc_stop %s%s\n",
836 rc->rc_chan, (rw & FWRITE)?"FWRITE ":"", (rw & FREAD)?"FREAD":"");
837#endif
838 if (rw & FWRITE)
839 rc_discard_output(rc);
840 critical_enter();
841 if (rw & FREAD) {
842 rc->rc_flags &= ~RC_DORXFER;
843 eptr = rc->rc_iptr;
844 if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) {
845 tptr = &rc->rc_ibuf[RC_IBUFSIZE];
846 rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE];
847 } else {
848 tptr = rc->rc_ibuf;
849 rc->rc_iptr = rc->rc_ibuf;
850 }
851 sc->sc_scheduled_event -= eptr - tptr;
852 }
853 if (tp->t_state & TS_TTSTOP)
854 rc->rc_flags |= RC_OSUSP;
855 else
856 rc->rc_flags &= ~RC_OSUSP;
857 critical_exit();
858}
859
860static int
861rcopen(dev_t dev, int flag, int mode, d_thread_t *td)
862{
863 struct rc_softc *sc;
864 struct rc_chans *rc;
865 struct tty *tp;
866 int s, error = 0;
867
868 rc = DEV_TO_RC(dev);
869 sc = rc->rc_rcb;
870 tp = &rc->rc_tp;
871 if (sc->sc_opencount < 0)
872 return (ENXIO);
873 sc->sc_opencount++;
874#ifdef RCDEBUG
875 device_printf(sc->sc_dev, "channel %d: rcopen: dev %p\n",
876 rc->rc_chan, dev);
877#endif
878 s = spltty();
879
880again:
881 while (rc->rc_flags & RC_DTR_OFF) {
882 error = tsleep(&(rc->rc_dtrwait), TTIPRI | PCATCH, "rcdtr", 0);
883 if (error != 0)
884 goto out;
885 }
886 if (tp->t_state & TS_ISOPEN) {
887 if (CALLOUT(dev)) {
888 if (!(rc->rc_flags & RC_ACTOUT)) {
889 error = EBUSY;
890 goto out;
891 }
892 } else {
893 if (rc->rc_flags & RC_ACTOUT) {
894 if (flag & O_NONBLOCK) {
895 error = EBUSY;
896 goto out;
897 }
898 error = tsleep(&rc->rc_rcb,
899 TTIPRI|PCATCH, "rcbi", 0);
900 if (error)
901 goto out;
902 goto again;
903 }
904 }
905 if (tp->t_state & TS_XCLUDE &&
906 suser(td)) {
907 error = EBUSY;
908 goto out;
909 }
910 } else {
911 tp->t_oproc = rc_start;
912 tp->t_param = rc_param;
913 tp->t_stop = rc_stop;
914 tp->t_dev = dev;
915
916 if (CALLOUT(dev))
917 tp->t_cflag |= CLOCAL;
918 else
919 tp->t_cflag &= ~CLOCAL;
920
921 error = rc_param(tp, &tp->t_termios);
922 if (error)
923 goto out;
924 (void) rc_modctl(rc, TIOCM_RTS|TIOCM_DTR, DMSET);
925
926 if ((rc->rc_msvr & MSVR_CD) || CALLOUT(dev))
927 (*linesw[tp->t_line].l_modem)(tp, 1);
928 }
929 if (!(tp->t_state & TS_CARR_ON) && !CALLOUT(dev)
930 && !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) {
931 rc->rc_dcdwaits++;
932 error = tsleep(TSA_CARR_ON(tp), TTIPRI | PCATCH, "rcdcd", 0);
933 rc->rc_dcdwaits--;
934 if (error != 0)
935 goto out;
936 goto again;
937 }
938 error = (*linesw[tp->t_line].l_open)(dev, tp);
939 disc_optim(tp, &tp->t_termios, rc);
940 if ((tp->t_state & TS_ISOPEN) && CALLOUT(dev))
941 rc->rc_flags |= RC_ACTOUT;
942out:
943 (void) splx(s);
944
945 if(rc->rc_dcdwaits == 0 && !(tp->t_state & TS_ISOPEN))
946 rc_hardclose(rc);
947
948 return error;
949}
950
951static int
952rcclose(dev_t dev, int flag, int mode, d_thread_t *td)
953{
954 struct rc_softc *sc;
955 struct rc_chans *rc;
956 struct tty *tp;
957 int s;
958
959 rc = DEV_TO_RC(dev);
960 sc = rc->rc_rcb;
961 tp = &rc->rc_tp;
962#ifdef RCDEBUG
963 device_printf(sc->sc_dev, "channel %d: rcclose dev %p\n",
964 rc->rc_chan, dev);
965#endif
966 s = spltty();
967 (*linesw[tp->t_line].l_close)(tp, flag);
968 disc_optim(tp, &tp->t_termios, rc);
969 rc_stop(tp, FREAD | FWRITE);
970 rc_hardclose(rc);
971 ttyclose(tp);
972 splx(s);
973 KASSERT(sc->sc_opencount > 0, ("rcclose: non-positive open count"));
974 sc->sc_opencount--;
975 return 0;
976}
977
978static void
979rc_hardclose(struct rc_chans *rc)
980{
981 struct rc_softc *sc;
982 struct tty *tp;
983 int s;
984
985 tp = &rc->rc_tp;
986 sc = rc->rc_rcb;
987 s = spltty();
988 rcout(sc, CD180_CAR, rc->rc_chan);
989
990 /* Disable rx/tx intrs */
991 rcout(sc, CD180_IER, rc->rc_ier = 0);
992 if ( (tp->t_cflag & HUPCL)
993 || (!(rc->rc_flags & RC_ACTOUT)
994 && !(rc->rc_msvr & MSVR_CD)
995 && !(tp->t_cflag & CLOCAL))
996 || !(tp->t_state & TS_ISOPEN)
997 ) {
998 CCRCMD(sc, rc->rc_chan, CCR_ResetChan);
999 WAITFORCCR(sc, rc->rc_chan);
1000 (void) rc_modctl(rc, TIOCM_RTS, DMSET);
1001 if (rc->rc_dtrwait) {
1002 callout_reset(&rc->rc_dtrcallout, rc->rc_dtrwait,
1003 rc_dtrwakeup, rc);
1004 rc->rc_flags |= RC_DTR_OFF;
1005 }
1006 }
1007 rc->rc_flags &= ~RC_ACTOUT;
1008 wakeup( &rc->rc_rcb); /* wake bi */
1009 wakeup(TSA_CARR_ON(tp));
1010 (void) splx(s);
1011}
1012
1013/* Reset the bastard */
1014static void
1015rc_hwreset(struct rc_softc *sc, uint chipid)
1016{
1017 CCRCMD(sc, -1, CCR_HWRESET); /* Hardware reset */
1018 DELAY(20000);
1019 WAITFORCCR(sc, -1);
1020
1021 rcout(sc, RC_CTOUT, 0); /* Clear timeout */
1022 rcout(sc, CD180_GIVR, chipid);
1023 rcout(sc, CD180_GICR, 0);
1024
1025 /* Set Prescaler Registers (1 msec) */
1026 rcout(sc, CD180_PPRL, ((RC_OSCFREQ + 999) / 1000) & 0xFF);
1027 rcout(sc, CD180_PPRH, ((RC_OSCFREQ + 999) / 1000) >> 8);
1028
1029 /* Initialize Priority Interrupt Level Registers */
1030 rcout(sc, CD180_PILR1, RC_PILR_MODEM);
1031 rcout(sc, CD180_PILR2, RC_PILR_TX);
1032 rcout(sc, CD180_PILR3, RC_PILR_RX);
1033
1034 /* Reset DTR */
1035 rcout(sc, RC_DTREG, ~0);
1036}
1037
1038/* Set channel parameters */
1039static int
1040rc_param(struct tty *tp, struct termios *ts)
1041{
1042 struct rc_softc *sc;
1043 struct rc_chans *rc;
1044 int idivs, odivs, s, val, cflag, iflag, lflag, inpflow;
1045
1046 if ( ts->c_ospeed < 0 || ts->c_ospeed > 76800
1047 || ts->c_ispeed < 0 || ts->c_ispeed > 76800
1048 )
1049 return (EINVAL);
1050 if (ts->c_ispeed == 0)
1051 ts->c_ispeed = ts->c_ospeed;
1052 odivs = RC_BRD(ts->c_ospeed);
1053 idivs = RC_BRD(ts->c_ispeed);
1054
1055 rc = TTY_TO_RC(tp);
1056 sc = rc->rc_rcb;
1057 s = spltty();
1058
1059 /* Select channel */
1060 rcout(sc, CD180_CAR, rc->rc_chan);
1061
1062 /* If speed == 0, hangup line */
1063 if (ts->c_ospeed == 0) {
1064 CCRCMD(sc, rc->rc_chan, CCR_ResetChan);
1065 WAITFORCCR(sc, rc->rc_chan);
1066 (void) rc_modctl(rc, TIOCM_DTR, DMBIC);
1067 }
1068
1069 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
1070 cflag = ts->c_cflag;
1071 iflag = ts->c_iflag;
1072 lflag = ts->c_lflag;
1073
1074 if (idivs > 0) {
1075 rcout(sc, CD180_RBPRL, idivs & 0xFF);
1076 rcout(sc, CD180_RBPRH, idivs >> 8);
1077 }
1078 if (odivs > 0) {
1079 rcout(sc, CD180_TBPRL, odivs & 0xFF);
1080 rcout(sc, CD180_TBPRH, odivs >> 8);
1081 }
1082
1083 /* set timeout value */
1084 if (ts->c_ispeed > 0) {
1085 int itm = ts->c_ispeed > 2400 ? 5 : 10000 / ts->c_ispeed + 1;
1086
1087 if ( !(lflag & ICANON)
1088 && ts->c_cc[VMIN] != 0 && ts->c_cc[VTIME] != 0
1089 && ts->c_cc[VTIME] * 10 > itm)
1090 itm = ts->c_cc[VTIME] * 10;
1091
1092 rcout(sc, CD180_RTPR, itm <= 255 ? itm : 255);
1093 }
1094
1095 switch (cflag & CSIZE) {
1096 case CS5: val = COR1_5BITS; break;
1097 case CS6: val = COR1_6BITS; break;
1098 case CS7: val = COR1_7BITS; break;
1099 default:
1100 case CS8: val = COR1_8BITS; break;
1101 }
1102 if (cflag & PARENB) {
1103 val |= COR1_NORMPAR;
1104 if (cflag & PARODD)
1105 val |= COR1_ODDP;
1106 if (!(cflag & INPCK))
1107 val |= COR1_Ignore;
1108 } else
1109 val |= COR1_Ignore;
1110 if (cflag & CSTOPB)
1111 val |= COR1_2SB;
1112 rcout(sc, CD180_COR1, val);
1113
1114 /* Set FIFO threshold */
1115 val = ts->c_ospeed <= 4800 ? 1 : CD180_NFIFO / 2;
1116 inpflow = 0;
1117 if ( (iflag & IXOFF)
1118 && ( ts->c_cc[VSTOP] != _POSIX_VDISABLE
1119 && ( ts->c_cc[VSTART] != _POSIX_VDISABLE
1120 || (iflag & IXANY)
1121 )
1122 )
1123 ) {
1124 inpflow = 1;
1125 val |= COR3_SCDE|COR3_FCT;
1126 }
1127 rcout(sc, CD180_COR3, val);
1128
1129 /* Initialize on-chip automatic flow control */
1130 val = 0;
1131 rc->rc_flags &= ~(RC_CTSFLOW|RC_SEND_RDY);
1132 if (cflag & CCTS_OFLOW) {
1133 rc->rc_flags |= RC_CTSFLOW;
1134 val |= COR2_CtsAE;
1135 } else
1136 rc->rc_flags |= RC_SEND_RDY;
1137 if (tp->t_state & TS_TTSTOP)
1138 rc->rc_flags |= RC_OSUSP;
1139 else
1140 rc->rc_flags &= ~RC_OSUSP;
1141 if (cflag & CRTS_IFLOW)
1142 rc->rc_flags |= RC_RTSFLOW;
1143 else
1144 rc->rc_flags &= ~RC_RTSFLOW;
1145
1146 if (inpflow) {
1147 if (ts->c_cc[VSTART] != _POSIX_VDISABLE)
1148 rcout(sc, CD180_SCHR1, ts->c_cc[VSTART]);
1149 rcout(sc, CD180_SCHR2, ts->c_cc[VSTOP]);
1150 val |= COR2_TxIBE;
1151 if (iflag & IXANY)
1152 val |= COR2_IXM;
1153 }
1154
1155 rcout(sc, CD180_COR2, rc->rc_cor2 = val);
1156
1157 CCRCMD(sc, rc->rc_chan, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
1158
1159 disc_optim(tp, ts, rc);
1160
1161 /* modem ctl */
1162 val = cflag & CLOCAL ? 0 : MCOR1_CDzd;
1163 if (cflag & CCTS_OFLOW)
1164 val |= MCOR1_CTSzd;
1165 rcout(sc, CD180_MCOR1, val);
1166
1167 val = cflag & CLOCAL ? 0 : MCOR2_CDod;
1168 if (cflag & CCTS_OFLOW)
1169 val |= MCOR2_CTSod;
1170 rcout(sc, CD180_MCOR2, val);
1171
1172 /* enable i/o and interrupts */
1173 CCRCMD(sc, rc->rc_chan,
1174 CCR_XMTREN | ((cflag & CREAD) ? CCR_RCVREN : CCR_RCVRDIS));
1175 WAITFORCCR(sc, rc->rc_chan);
1176
1177 rc->rc_ier = cflag & CLOCAL ? 0 : IER_CD;
1178 if (cflag & CCTS_OFLOW)
1179 rc->rc_ier |= IER_CTS;
1180 if (cflag & CREAD)
1181 rc->rc_ier |= IER_RxData;
1182 if (tp->t_state & TS_BUSY)
1183 rc->rc_ier |= IER_TxRdy;
1184 if (ts->c_ospeed != 0)
1185 rc_modctl(rc, TIOCM_DTR, DMBIS);
1186 if ((cflag & CCTS_OFLOW) && (rc->rc_msvr & MSVR_CTS))
1187 rc->rc_flags |= RC_SEND_RDY;
1188 rcout(sc, CD180_IER, rc->rc_ier);
1189 (void) splx(s);
1190 return 0;
1191}
1192
1193/* Re-initialize board after bogus interrupts */
1194static void
1195rc_reinit(struct rc_softc *sc)
1196{
1197 struct rc_chans *rc;
1198 int i;
1199
1200 rc_hwreset(sc, RC_FAKEID);
1201 rc = sc->sc_channels;
1202 for (i = 0; i < CD180_NCHAN; i++, rc++)
1203 (void) rc_param(&rc->rc_tp, &rc->rc_tp.t_termios);
1204}
1205
1206static int
1207rcioctl(dev_t dev, u_long cmd, caddr_t data, int flag, d_thread_t *td)
1208{
1209 struct rc_chans *rc;
1210 struct tty *tp;
1211 int s, error;
1212
1213 rc = DEV_TO_RC(dev);
1214 tp = &rc->rc_tp;
1215 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
1216 if (error != ENOIOCTL)
1217 return (error);
1218 error = ttioctl(tp, cmd, data, flag);
1219 disc_optim(tp, &tp->t_termios, rc);
1220 if (error != ENOIOCTL)
1221 return (error);
1222 s = spltty();
1223
1224 switch (cmd) {
1225 case TIOCSBRK:
1226 rc->rc_pendcmd = CD180_C_SBRK;
1227 break;
1228
1229 case TIOCCBRK:
1230 rc->rc_pendcmd = CD180_C_EBRK;
1231 break;
1232
1233 case TIOCSDTR:
1234 (void) rc_modctl(rc, TIOCM_DTR, DMBIS);
1235 break;
1236
1237 case TIOCCDTR:
1238 (void) rc_modctl(rc, TIOCM_DTR, DMBIC);
1239 break;
1240
1241 case TIOCMGET:
1242 *(int *) data = rc_modctl(rc, 0, DMGET);
1243 break;
1244
1245 case TIOCMSET:
1246 (void) rc_modctl(rc, *(int *) data, DMSET);
1247 break;
1248
1249 case TIOCMBIC:
1250 (void) rc_modctl(rc, *(int *) data, DMBIC);
1251 break;
1252
1253 case TIOCMBIS:
1254 (void) rc_modctl(rc, *(int *) data, DMBIS);
1255 break;
1256
1257 case TIOCMSDTRWAIT:
1258 error = suser(td);
1259 if (error != 0) {
1260 splx(s);
1261 return (error);
1262 }
1263 rc->rc_dtrwait = *(int *)data * hz / 100;
1264 break;
1265
1266 case TIOCMGDTRWAIT:
1267 *(int *)data = rc->rc_dtrwait * 100 / hz;
1268 break;
1269
1270 default:
1271 (void) splx(s);
1272 return ENOTTY;
1273 }
1274 (void) splx(s);
1275 return 0;
1276}
1277
1278
1279/* Modem control routines */
1280
1281static int
1282rc_modctl(struct rc_chans *rc, int bits, int cmd)
1283{
1284 struct rc_softc *sc;
1285 u_char *dtr;
1286 u_char msvr;
1287
1288 sc = rc->rc_rcb;
1289 dtr = &sc->sc_dtr;
1290 rcout(sc, CD180_CAR, rc->rc_chan);
1291
1292 switch (cmd) {
1293 case DMSET:
1294 rcout(sc, RC_DTREG, (bits & TIOCM_DTR) ?
1295 ~(*dtr |= 1 << rc->rc_chan) :
1296 ~(*dtr &= ~(1 << rc->rc_chan)));
1297 msvr = rcin(sc, CD180_MSVR);
1298 if (bits & TIOCM_RTS)
1299 msvr |= MSVR_RTS;
1300 else
1301 msvr &= ~MSVR_RTS;
1302 if (bits & TIOCM_DTR)
1303 msvr |= MSVR_DTR;
1304 else
1305 msvr &= ~MSVR_DTR;
1306 rcout(sc, CD180_MSVR, msvr);
1307 break;
1308
1309 case DMBIS:
1310 if (bits & TIOCM_DTR)
1311 rcout(sc, RC_DTREG, ~(*dtr |= 1 << rc->rc_chan));
1312 msvr = rcin(sc, CD180_MSVR);
1313 if (bits & TIOCM_RTS)
1314 msvr |= MSVR_RTS;
1315 if (bits & TIOCM_DTR)
1316 msvr |= MSVR_DTR;
1317 rcout(sc, CD180_MSVR, msvr);
1318 break;
1319
1320 case DMGET:
1321 bits = TIOCM_LE;
1322 msvr = rc->rc_msvr = rcin(sc, CD180_MSVR);
1323
1324 if (msvr & MSVR_RTS)
1325 bits |= TIOCM_RTS;
1326 if (msvr & MSVR_CTS)
1327 bits |= TIOCM_CTS;
1328 if (msvr & MSVR_DSR)
1329 bits |= TIOCM_DSR;
1330 if (msvr & MSVR_DTR)
1331 bits |= TIOCM_DTR;
1332 if (msvr & MSVR_CD)
1333 bits |= TIOCM_CD;
1334 if (~rcin(sc, RC_RIREG) & (1 << rc->rc_chan))
1335 bits |= TIOCM_RI;
1336 return bits;
1337
1338 case DMBIC:
1339 if (bits & TIOCM_DTR)
1340 rcout(sc, RC_DTREG, ~(*dtr &= ~(1 << rc->rc_chan)));
1341 msvr = rcin(sc, CD180_MSVR);
1342 if (bits & TIOCM_RTS)
1343 msvr &= ~MSVR_RTS;
1344 if (bits & TIOCM_DTR)
1345 msvr &= ~MSVR_DTR;
1346 rcout(sc, CD180_MSVR, msvr);
1347 break;
1348 }
1349 rc->rc_msvr = rcin(sc, CD180_MSVR);
1350 return 0;
1351}
1352
1353#define ERR(s) do { \
1354 device_printf(sc->sc_dev, "%s", ""); \
1355 printf s ; \
1356 printf("\n"); \
1357 (void) splx(old_level); \
1358 return 1; \
1359} while (0)
1360
1361/* Test the board. */
1362int
1363rc_test(struct rc_softc *sc)
1364{
1365 int chan = 0;
1366 int i = 0, rcnt, old_level;
1367 unsigned int iack, chipid;
1368 unsigned short divs;
1369 static u_char ctest[] = "\377\125\252\045\244\0\377";
1370#define CTLEN 8
1371
1372 struct rtest {
1373 u_char txbuf[CD180_NFIFO]; /* TX buffer */
1374 u_char rxbuf[CD180_NFIFO]; /* RX buffer */
1375 int rxptr; /* RX pointer */
1376 int txptr; /* TX pointer */
1377 } tchans[CD180_NCHAN];
1378
1379 old_level = spltty();
1380
1381 chipid = RC_FAKEID;
1382
1383 /* First, reset board to inital state */
1384 rc_hwreset(sc, chipid);
1385
1386 divs = RC_BRD(19200);
1387
1388 /* Initialize channels */
1389 for (chan = 0; chan < CD180_NCHAN; chan++) {
1390
1391 /* Select and reset channel */
1392 rcout(sc, CD180_CAR, chan);
1393 CCRCMD(sc, chan, CCR_ResetChan);
1394 WAITFORCCR(sc, chan);
1395
1396 /* Set speed */
1397 rcout(sc, CD180_RBPRL, divs & 0xFF);
1398 rcout(sc, CD180_RBPRH, divs >> 8);
1399 rcout(sc, CD180_TBPRL, divs & 0xFF);
1400 rcout(sc, CD180_TBPRH, divs >> 8);
1401
1402 /* set timeout value */
1403 rcout(sc, CD180_RTPR, 0);
1404
1405 /* Establish local loopback */
1406 rcout(sc, CD180_COR1, COR1_NOPAR | COR1_8BITS | COR1_1SB);
1407 rcout(sc, CD180_COR2, COR2_LLM);
1408 rcout(sc, CD180_COR3, CD180_NFIFO);
1409 CCRCMD(sc, chan, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
1410 CCRCMD(sc, chan, CCR_RCVREN | CCR_XMTREN);
1411 WAITFORCCR(sc, chan);
1412 rcout(sc, CD180_MSVR, MSVR_RTS);
1413
1414 /* Fill TXBUF with test data */
1415 for (i = 0; i < CD180_NFIFO; i++) {
1416 tchans[chan].txbuf[i] = ctest[i];
1417 tchans[chan].rxbuf[i] = 0;
1418 }
1419 tchans[chan].txptr = tchans[chan].rxptr = 0;
1420
1421 /* Now, start transmit */
1422 rcout(sc, CD180_IER, IER_TxMpty|IER_RxData);
1423 }
1424 /* Pseudo-interrupt poll stuff */
1425 for (rcnt = 10000; rcnt-- > 0; rcnt--) {
1426 i = ~(rcin(sc, RC_BSR));
1427 if (i & RC_BSR_TOUT)
1428 ERR(("BSR timeout bit set\n"));
1429 else if (i & RC_BSR_TXINT) {
1430 iack = rcin(sc, RC_PILR_TX);
1431 if (iack != (GIVR_IT_TDI | chipid))
1432 ERR(("Bad TX intr ack (%02x != %02x)\n",
1433 iack, GIVR_IT_TDI | chipid));
1434 chan = (rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH;
1435 /* If no more data to transmit, disable TX intr */
1436 if (tchans[chan].txptr >= CD180_NFIFO) {
1437 iack = rcin(sc, CD180_IER);
1438 rcout(sc, CD180_IER, iack & ~IER_TxMpty);
1439 } else {
1440 for (iack = tchans[chan].txptr;
1441 iack < CD180_NFIFO; iack++)
1442 rcout(sc, CD180_TDR,
1443 tchans[chan].txbuf[iack]);
1444 tchans[chan].txptr = iack;
1445 }
1446 rcout(sc, CD180_EOIR, 0);
1447 } else if (i & RC_BSR_RXINT) {
1448 u_char ucnt;
1449
1450 iack = rcin(sc, RC_PILR_RX);
1451 if (iack != (GIVR_IT_RGDI | chipid) &&
1452 iack != (GIVR_IT_REI | chipid))
1453 ERR(("Bad RX intr ack (%02x != %02x)\n",
1454 iack, GIVR_IT_RGDI | chipid));
1455 chan = (rcin(sc, CD180_GICR) & GICR_CHAN) >> GICR_LSH;
1456 ucnt = rcin(sc, CD180_RDCR) & 0xF;
1457 while (ucnt-- > 0) {
1458 iack = rcin(sc, CD180_RCSR);
1459 if (iack & RCSR_Timeout)
1460 break;
1461 if (iack & 0xF)
1462 ERR(("Bad char chan %d (RCSR = %02X)\n",
1463 chan, iack));
1464 if (tchans[chan].rxptr > CD180_NFIFO)
1465 ERR(("Got extra chars chan %d\n",
1466 chan));
1467 tchans[chan].rxbuf[tchans[chan].rxptr++] =
1468 rcin(sc, CD180_RDR);
1469 }
1470 rcout(sc, CD180_EOIR, 0);
1471 }
1472 rcout(sc, RC_CTOUT, 0);
1473 for (iack = chan = 0; chan < CD180_NCHAN; chan++)
1474 if (tchans[chan].rxptr >= CD180_NFIFO)
1475 iack++;
1476 if (iack == CD180_NCHAN)
1477 break;
1478 }
1479 for (chan = 0; chan < CD180_NCHAN; chan++) {
1480 /* Select and reset channel */
1481 rcout(sc, CD180_CAR, chan);
1482 CCRCMD(sc, chan, CCR_ResetChan);
1483 }
1484
1485 if (!rcnt)
1486 ERR(("looses characters during local loopback\n"));
1487 /* Now, check data */
1488 for (chan = 0; chan < CD180_NCHAN; chan++)
1489 for (i = 0; i < CD180_NFIFO; i++)
1490 if (ctest[i] != tchans[chan].rxbuf[i])
1491 ERR(("data mismatch chan %d ptr %d (%d != %d)\n",
1492 chan, i, ctest[i], tchans[chan].rxbuf[i]));
1493 (void) splx(old_level);
1494 return 0;
1495}
1496
1497#ifdef RCDEBUG
1498static void
1499printrcflags(struct rc_chans *rc, char *comment)
1500{
1501 struct rc_softc *sc;
1502 u_short f = rc->rc_flags;
1503
1504 sc = rc->rc_rcb;
1505 printf("rc%d/%d: %s flags: %s%s%s%s%s%s%s%s%s%s%s%s\n",
1506 rc->rc_rcb->rcb_unit, rc->rc_chan, comment,
1507 (f & RC_DTR_OFF)?"DTR_OFF " :"",
1508 (f & RC_ACTOUT) ?"ACTOUT " :"",
1509 (f & RC_RTSFLOW)?"RTSFLOW " :"",
1510 (f & RC_CTSFLOW)?"CTSFLOW " :"",
1511 (f & RC_DORXFER)?"DORXFER " :"",
1512 (f & RC_DOXXFER)?"DOXXFER " :"",
1513 (f & RC_MODCHG) ?"MODCHG " :"",
1514 (f & RC_OSUSP) ?"OSUSP " :"",
1515 (f & RC_OSBUSY) ?"OSBUSY " :"",
1516 (f & RC_WAS_BUFOVFL) ?"BUFOVFL " :"",
1517 (f & RC_WAS_SILOVFL) ?"SILOVFL " :"",
1518 (f & RC_SEND_RDY) ?"SEND_RDY":"");
1519
1520 rcout(sc, CD180_CAR, rc->rc_chan);
1521
1522 printf("rc%d/%d: msvr %02x ier %02x ccsr %02x\n",
1523 rc->rc_rcb->rcb_unit, rc->rc_chan,
1524 rcin(sc, CD180_MSVR),
1525 rcin(sc, CD180_IER),
1526 rcin(sc, CD180_CCSR));
1527}
1528#endif /* RCDEBUG */
1529
1530static void
1531rc_dtrwakeup(void *arg)
1532{
1533 struct rc_chans *rc;
1534
1535 rc = (struct rc_chans *)arg;
1536 rc->rc_flags &= ~RC_DTR_OFF;
1537 wakeup(&rc->rc_dtrwait);
1538}
1539
1540static void
1541rc_discard_output(struct rc_chans *rc)
1542{
1543 critical_enter();
1544 if (rc->rc_flags & RC_DOXXFER) {
1545 rc->rc_rcb->sc_scheduled_event -= LOTS_OF_EVENTS;
1546 rc->rc_flags &= ~RC_DOXXFER;
1547 }
1548 rc->rc_optr = rc->rc_obufend;
1549 rc->rc_tp.t_state &= ~TS_BUSY;
1550 critical_exit();
1551 ttwwakeup(&rc->rc_tp);
1552}
1553
1554static void
1555disc_optim(struct tty *tp, struct termios *t, struct rc_chans *rc)
1556{
1557
1558 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))
1559 && (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK))
1560 && (!(t->c_iflag & PARMRK)
1561 || (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))
1562 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))
1563 && linesw[tp->t_line].l_rint == ttyinput)
1564 tp->t_state |= TS_CAN_BYPASS_L_RINT;
1565 else
1566 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
1567 rc->rc_hotchar = linesw[tp->t_line].l_hotchar;
1568}
1569
1570static void
1571rc_wait0(struct rc_softc *sc, int chan, int line)
1572{
1573 int rcnt;
1574
1575 for (rcnt = 50; rcnt && rcin(sc, CD180_CCR); rcnt--)
1576 DELAY(30);
1577 if (rcnt == 0)
1578 device_printf(sc->sc_dev,
1579 "channel %d command timeout, rc.c line: %d\n", chan, line);
1580}
1581
1582static device_method_t rc_methods[] = {
1583 /* Device interface */
1584 DEVMETHOD(device_probe, rc_probe),
1585 DEVMETHOD(device_attach, rc_attach),
1586 DEVMETHOD(device_detach, rc_detach),
1587 { 0, 0 }
1588};
1589
1590static driver_t rc_driver = {
1591 "rc",
1592 rc_methods, sizeof(struct rc_softc),
1593};
1594
1595DRIVER_MODULE(rc, isa, rc_driver, rc_devclass, 0, 0);
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