44
45#include <sys/param.h>
46#include <sys/systm.h>
47#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
48#include <sys/ioctl_compat.h>
49#endif
50#include <sys/tty.h>
51#include <sys/conf.h>
52#include <sys/fcntl.h>
53#include <sys/kernel.h>
54#include <sys/malloc.h>
55#include <sys/sysctl.h>
56#include <sys/bus.h>
57#include <machine/bus.h>
58#include <sys/rman.h>
59#include <machine/resource.h>
60
61
62#include <vm/vm.h>
63#include <vm/pmap.h>
64
65#include <machine/stdarg.h>
66
67#include <dev/si/sireg.h>
68#include <dev/si/sivar.h>
69#include <dev/si/si.h>
70
71/*
72 * This device driver is designed to interface the Specialix International
73 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA,
74 * EISA or PCI bus machine.
75 *
76 * The controller is interfaced to the host via dual port RAM
77 * and an interrupt.
78 *
79 * The code for the Host 1 (very old ISA cards) has not been tested.
80 */
81
82#define POLL /* turn on poller to scan for lost interrupts */
83#define REALPOLL /* on each poll, scan for work regardless */
84#define POLLHZ (hz/10) /* 10 times per second */
85#define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE)
86#define INT_COUNT 25000 /* max of 125 ints per second */
87#define JET_INT_COUNT 100 /* max of 100 ints per second */
88#define RXINT_COUNT 1 /* one rxint per 10 milliseconds */
89
90enum si_mctl { GET, SET, BIS, BIC };
91
92static void si_command(struct si_port *, int, int);
93static int si_modem(struct si_port *, enum si_mctl, int);
94static void si_write_enable(struct si_port *, int);
95static int si_Sioctl(dev_t, u_long, caddr_t, int, struct thread *);
96static void si_start(struct tty *);
97static void si_stop(struct tty *, int);
98static timeout_t si_lstart;
99static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp);
100static void sihardclose(struct si_port *pp);
101static void sidtrwakeup(void *chan);
102
103#ifdef SI_DEBUG
104static char *si_mctl2str(enum si_mctl cmd);
105#endif
106
107static int siparam(struct tty *, struct termios *);
108
109static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip);
110static char * si_modulename(int host_type, int uart_type);
111
112static d_open_t siopen;
113static d_close_t siclose;
114static d_write_t siwrite;
115static d_ioctl_t siioctl;
116
117#define CDEV_MAJOR 68
118static struct cdevsw si_cdevsw = {
119 .d_open = siopen,
120 .d_close = siclose,
121 .d_read = ttyread,
122 .d_write = siwrite,
123 .d_ioctl = siioctl,
124 .d_poll = ttypoll,
125 .d_name = "si",
126 .d_maj = CDEV_MAJOR,
127 .d_flags = D_TTY,
128 .d_kqfilter = ttykqfilter,
129};
130
131static int si_Nports;
132static int si_Nmodules;
133static int si_debug = 0; /* data, not bss, so it's patchable */
134
135SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, "");
136TUNABLE_INT("machdep.si_debug", &si_debug);
137
138static int si_numunits;
139
140devclass_t si_devclass;
141
142#ifndef B2000 /* not standard, but the hardware knows it. */
143# define B2000 2000
144#endif
145static struct speedtab bdrates[] = {
146 { B75, CLK75, }, /* 0x0 */
147 { B110, CLK110, }, /* 0x1 */
148 { B150, CLK150, }, /* 0x3 */
149 { B300, CLK300, }, /* 0x4 */
150 { B600, CLK600, }, /* 0x5 */
151 { B1200, CLK1200, }, /* 0x6 */
152 { B2000, CLK2000, }, /* 0x7 */
153 { B2400, CLK2400, }, /* 0x8 */
154 { B4800, CLK4800, }, /* 0x9 */
155 { B9600, CLK9600, }, /* 0xb */
156 { B19200, CLK19200, }, /* 0xc */
157 { B38400, CLK38400, }, /* 0x2 (out of order!) */
158 { B57600, CLK57600, }, /* 0xd */
159 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */
160 { -1, -1 },
161};
162
163
164/* populated with approx character/sec rates - translated at card
165 * initialisation time to chars per tick of the clock */
166static int done_chartimes = 0;
167static struct speedtab chartimes[] = {
168 { B75, 8, },
169 { B110, 11, },
170 { B150, 15, },
171 { B300, 30, },
172 { B600, 60, },
173 { B1200, 120, },
174 { B2000, 200, },
175 { B2400, 240, },
176 { B4800, 480, },
177 { B9600, 960, },
178 { B19200, 1920, },
179 { B38400, 3840, },
180 { B57600, 5760, },
181 { B115200, 11520, },
182 { -1, -1 },
183};
184static volatile int in_intr = 0; /* Inside interrupt handler? */
185
186#ifdef POLL
187static int si_pollrate; /* in addition to irq */
188static int si_realpoll = 0; /* poll HW on timer */
189
190SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, "");
191SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, "");
192
193static int init_finished = 0;
194static void si_poll(void *);
195#endif
196
197/*
198 * Array of adapter types and the corresponding RAM size. The order of
199 * entries here MUST match the ordinal of the adapter type.
200 */
201static char *si_type[] = {
202 "EMPTY",
203 "SIHOST",
204 "SIMCA", /* FreeBSD does not support Microchannel */
205 "SIHOST2",
206 "SIEISA",
207 "SIPCI",
208 "SXPCI",
209 "SXISA",
210};
211
212/*
213 * We have to make an 8 bit version of bcopy, since some cards can't
214 * deal with 32 bit I/O
215 */
216static void __inline
217si_bcopy(const void *src, void *dst, size_t len)
218{
219 while (len--)
220 *(((u_char *)dst)++) = *(((const u_char *)src)++);
221}
222static void __inline
223si_vbcopy(const volatile void *src, void *dst, size_t len)
224{
225 while (len--)
226 *(((u_char *)dst)++) = *(((const volatile u_char *)src)++);
227}
228static void __inline
229si_bcopyv(const void *src, volatile void *dst, size_t len)
230{
231 while (len--)
232 *(((volatile u_char *)dst)++) = *(((const u_char *)src)++);
233}
234
235
236/*
237 * Attach the device. Initialize the card.
238 */
239int
240siattach(device_t dev)
241{
242 int unit;
243 struct si_softc *sc;
244 struct si_port *pp;
245 volatile struct si_channel *ccbp;
246 volatile struct si_reg *regp;
247 volatile caddr_t maddr;
248 struct si_module *modp;
249 struct speedtab *spt;
250 int nmodule, nport, x, y;
251 int uart_type;
252
253 sc = device_get_softc(dev);
254 unit = device_get_unit(dev);
255
256 sc->sc_typename = si_type[sc->sc_type];
257 if (si_numunits < unit + 1)
258 si_numunits = unit + 1;
259
260 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit));
261
262#ifdef POLL
263 if (si_pollrate == 0) {
264 si_pollrate = POLLHZ; /* in addition to irq */
265#ifdef REALPOLL
266 si_realpoll = 1; /* scan always */
267#endif
268 }
269#endif
270
271 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit,
272 sc->sc_typename, sc->sc_paddr, sc->sc_maddr));
273
274 sc->sc_ports = NULL; /* mark as uninitialised */
275
276 maddr = sc->sc_maddr;
277
278 /* Stop the CPU first so it won't stomp around while we load */
279
280 switch (sc->sc_type) {
281 case SIEISA:
282 outb(sc->sc_iobase + 2, sc->sc_irq << 4);
283 break;
284 case SIPCI:
285 *(maddr+SIPCIRESET) = 0;
286 break;
287 case SIJETPCI: /* fall through to JET ISA */
288 case SIJETISA:
289 *(maddr+SIJETCONFIG) = 0;
290 break;
291 case SIHOST2:
292 *(maddr+SIPLRESET) = 0;
293 break;
294 case SIHOST:
295 *(maddr+SIRESET) = 0;
296 break;
297 default: /* this should never happen */
298 printf("si%d: unsupported configuration\n", unit);
299 return EINVAL;
300 break;
301 }
302
303 /* OK, now lets download the download code */
304
305 if (SI_ISJET(sc->sc_type)) {
306 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n",
307 unit, si3_t225_dsize));
308 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr,
309 si3_t225_dsize);
310 DPRINT((0, DBG_DOWNLOAD,
311 "si%d: jet_bootstrap: nbytes %d -> %x\n",
312 unit, si3_t225_bsize, si3_t225_bootloadaddr));
313 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr,
314 si3_t225_bsize);
315 } else {
316 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n",
317 unit, si2_z280_dsize));
318 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr,
319 si2_z280_dsize);
320 }
321
322 /* Now start the CPU */
323
324 switch (sc->sc_type) {
325 case SIEISA:
326 /* modify the download code to tell it that it's on an EISA */
327 *(maddr + 0x42) = 1;
328 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4);
329 (void)inb(sc->sc_iobase + 3); /* reset interrupt */
330 break;
331 case SIPCI:
332 /* modify the download code to tell it that it's on a PCI */
333 *(maddr+0x42) = 1;
334 *(maddr+SIPCIRESET) = 1;
335 *(maddr+SIPCIINTCL) = 0;
336 break;
337 case SIJETPCI:
338 *(maddr+SIJETRESET) = 0;
339 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN;
340 break;
341 case SIJETISA:
342 *(maddr+SIJETRESET) = 0;
343 switch (sc->sc_irq) {
344 case 9:
345 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90;
346 break;
347 case 10:
348 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0;
349 break;
350 case 11:
351 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0;
352 break;
353 case 12:
354 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0;
355 break;
356 case 15:
357 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0;
358 break;
359 }
360 break;
361 case SIHOST:
362 *(maddr+SIRESET_CL) = 0;
363 *(maddr+SIINTCL_CL) = 0;
364 break;
365 case SIHOST2:
366 *(maddr+SIPLRESET) = 0x10;
367 switch (sc->sc_irq) {
368 case 11:
369 *(maddr+SIPLIRQ11) = 0x10;
370 break;
371 case 12:
372 *(maddr+SIPLIRQ12) = 0x10;
373 break;
374 case 15:
375 *(maddr+SIPLIRQ15) = 0x10;
376 break;
377 }
378 *(maddr+SIPLIRQCLR) = 0x10;
379 break;
380 default: /* this should _REALLY_ never happen */
381 printf("si%d: Uh, it was supported a second ago...\n", unit);
382 return EINVAL;
383 }
384
385 DELAY(1000000); /* wait around for a second */
386
387 regp = (struct si_reg *)maddr;
388 y = 0;
389 /* wait max of 5 sec for init OK */
390 while (regp->initstat == 0 && y++ < 10) {
391 DELAY(500000);
392 }
393 switch (regp->initstat) {
394 case 0:
395 printf("si%d: startup timeout - aborting\n", unit);
396 sc->sc_type = SIEMPTY;
397 return EINVAL;
398 case 1:
399 if (SI_ISJET(sc->sc_type)) {
400 /* set throttle to 100 times per second */
401 regp->int_count = JET_INT_COUNT;
402 /* rx_intr_count is a NOP in Jet */
403 } else {
404 /* set throttle to 125 times per second */
405 regp->int_count = INT_COUNT;
406 /* rx intr max of 25 times per second */
407 regp->rx_int_count = RXINT_COUNT;
408 }
409 regp->int_pending = 0; /* no intr pending */
410 regp->int_scounter = 0; /* reset counter */
411 break;
412 case 0xff:
413 /*
414 * No modules found, so give up on this one.
415 */
416 printf("si%d: %s - no ports found\n", unit,
417 si_type[sc->sc_type]);
418 return 0;
419 default:
420 printf("si%d: download code version error - initstat %x\n",
421 unit, regp->initstat);
422 return EINVAL;
423 }
424
425 /*
426 * First time around the ports just count them in order
427 * to allocate some memory.
428 */
429 nport = 0;
430 modp = (struct si_module *)(maddr + 0x80);
431 for (;;) {
432 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp));
433 switch (modp->sm_type) {
434 case TA4:
435 DPRINT((0, DBG_DOWNLOAD,
436 "si%d: Found old TA4 module, 4 ports\n",
437 unit));
438 x = 4;
439 break;
440 case TA8:
441 DPRINT((0, DBG_DOWNLOAD,
442 "si%d: Found old TA8 module, 8 ports\n",
443 unit));
444 x = 8;
445 break;
446 case TA4_ASIC:
447 DPRINT((0, DBG_DOWNLOAD,
448 "si%d: Found ASIC TA4 module, 4 ports\n",
449 unit));
450 x = 4;
451 break;
452 case TA8_ASIC:
453 DPRINT((0, DBG_DOWNLOAD,
454 "si%d: Found ASIC TA8 module, 8 ports\n",
455 unit));
456 x = 8;
457 break;
458 case MTA:
459 DPRINT((0, DBG_DOWNLOAD,
460 "si%d: Found CD1400 module, 8 ports\n",
461 unit));
462 x = 8;
463 break;
464 case SXDC:
465 DPRINT((0, DBG_DOWNLOAD,
466 "si%d: Found SXDC module, 8 ports\n",
467 unit));
468 x = 8;
469 break;
470 default:
471 printf("si%d: unknown module type %d\n",
472 unit, modp->sm_type);
473 goto try_next;
474 }
475
476 /* this was limited in firmware and is also a driver issue */
477 if ((nport + x) > SI_MAXPORTPERCARD) {
478 printf("si%d: extra ports ignored\n", unit);
479 goto try_next;
480 }
481
482 nport += x;
483 si_Nports += x;
484 si_Nmodules++;
485
486try_next:
487 if (modp->sm_next == 0)
488 break;
489 modp = (struct si_module *)
490 (maddr + (unsigned)(modp->sm_next & 0x7fff));
491 }
492 sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport,
493 M_DEVBUF, M_NOWAIT | M_ZERO);
494 if (sc->sc_ports == 0) {
495 printf("si%d: fail to malloc memory for port structs\n",
496 unit);
497 return EINVAL;
498 }
499 sc->sc_nport = nport;
500
501 /*
502 * Scan round the ports again, this time initialising.
503 */
504 pp = sc->sc_ports;
505 nmodule = 0;
506 modp = (struct si_module *)(maddr + 0x80);
507 uart_type = 1000; /* arbitary, > uchar_max */
508 for (;;) {
509 switch (modp->sm_type) {
510 case TA4:
511 nport = 4;
512 break;
513 case TA8:
514 nport = 8;
515 break;
516 case TA4_ASIC:
517 nport = 4;
518 break;
519 case TA8_ASIC:
520 nport = 8;
521 break;
522 case MTA:
523 nport = 8;
524 break;
525 case SXDC:
526 nport = 8;
527 break;
528 default:
529 goto try_next2;
530 }
531 nmodule++;
532 ccbp = (struct si_channel *)((char *)modp + 0x100);
533 if (uart_type == 1000)
534 uart_type = ccbp->type;
535 else if (uart_type != ccbp->type)
536 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n",
537 unit, nmodule,
538 ccbp->type, si_modulename(sc->sc_type, ccbp->type),
539 uart_type, si_modulename(sc->sc_type, uart_type));
540
541 for (x = 0; x < nport; x++, pp++, ccbp++) {
542 pp->sp_ccb = ccbp; /* save the address */
543 pp->sp_tty = ttymalloc(NULL);
544 pp->sp_pend = IDLE_CLOSE;
545 pp->sp_state = 0; /* internal flag */
546 pp->sp_dtr_wait = 3 * hz;
547 pp->sp_iin.c_iflag = TTYDEF_IFLAG;
548 pp->sp_iin.c_oflag = TTYDEF_OFLAG;
549 pp->sp_iin.c_cflag = TTYDEF_CFLAG;
550 pp->sp_iin.c_lflag = TTYDEF_LFLAG;
551 termioschars(&pp->sp_iin);
552 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed =
553 TTYDEF_SPEED;;
554 pp->sp_iout = pp->sp_iin;
555 }
556try_next2:
557 if (modp->sm_next == 0) {
558 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n",
559 unit,
560 sc->sc_typename,
561 sc->sc_nport,
562 nmodule,
563 uart_type,
564 si_modulename(sc->sc_type, uart_type));
565 break;
566 }
567 modp = (struct si_module *)
568 (maddr + (unsigned)(modp->sm_next & 0x7fff));
569 }
570 if (done_chartimes == 0) {
571 for (spt = chartimes ; spt->sp_speed != -1; spt++) {
572 if ((spt->sp_code /= hz) == 0)
573 spt->sp_code = 1;
574 }
575 done_chartimes = 1;
576 }
577
578/* path name devsw minor type uid gid perm*/
579 for (x = 0; x < sc->sc_nport; x++) {
580 /* sync with the manuals that start at 1 */
581 y = x + 1 + unit * (1 << SI_CARDSHIFT);
582 make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y);
583 make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y);
584 make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y);
585 make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y);
586 make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y);
587 make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y);
588 }
589 make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control");
590 return (0);
591}
592
593static int
594siopen(dev_t dev, int flag, int mode, struct thread *td)
595{
596 int oldspl, error;
597 int card, port;
598 struct si_softc *sc;
599 struct tty *tp;
600 volatile struct si_channel *ccbp;
601 struct si_port *pp;
602 int mynor = minor(dev);
603
604 /* quickly let in /dev/si_control */
605 if (IS_CONTROLDEV(mynor)) {
606 if ((error = suser(td)))
607 return(error);
608 return(0);
609 }
610
611 card = SI_CARD(mynor);
612 sc = devclass_get_softc(si_devclass, card);
613 if (sc == NULL)
614 return (ENXIO);
615
616 if (sc->sc_type == SIEMPTY) {
617 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n",
618 card, sc->sc_typename));
619 return(ENXIO);
620 }
621
622 port = SI_PORT(mynor);
623 if (port >= sc->sc_nport) {
624 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n",
625 card, sc->sc_nport));
626 return(ENXIO);
627 }
628
629#ifdef POLL
630 /*
631 * We've now got a device, so start the poller.
632 */
633 if (init_finished == 0) {
634 timeout(si_poll, (caddr_t)0L, si_pollrate);
635 init_finished = 1;
636 }
637#endif
638
639 /* initial/lock device */
640 if (IS_STATE(mynor)) {
641 return(0);
642 }
643
644 pp = sc->sc_ports + port;
645 tp = pp->sp_tty; /* the "real" tty */
646 dev->si_tty = tp;
647 ccbp = pp->sp_ccb; /* Find control block */
648 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n",
649 devtoname(dev), flag, mode, td));
650
651 oldspl = spltty(); /* Keep others out */
652 error = 0;
653
654open_top:
655 while (pp->sp_state & SS_DTR_OFF) {
656 error = tsleep(&pp->sp_dtr_wait, TTIPRI|PCATCH, "sidtr", 0);
657 if (error != 0)
658 goto out;
659 }
660
661 if (tp->t_state & TS_ISOPEN) {
662 /*
663 * The device is open, so everything has been initialised.
664 * handle conflicts.
665 */
666 if (IS_CALLOUT(mynor)) {
667 if (!pp->sp_active_out) {
668 error = EBUSY;
669 goto out;
670 }
671 } else {
672 if (pp->sp_active_out) {
673 if (flag & O_NONBLOCK) {
674 error = EBUSY;
675 goto out;
676 }
677 error = tsleep(&pp->sp_active_out,
678 TTIPRI|PCATCH, "sibi", 0);
679 if (error != 0)
680 goto out;
681 goto open_top;
682 }
683 }
684 if (tp->t_state & TS_XCLUDE &&
685 suser(td)) {
686 DPRINT((pp, DBG_OPEN|DBG_FAIL,
687 "already open and EXCLUSIVE set\n"));
688 error = EBUSY;
689 goto out;
690 }
691 } else {
692 /*
693 * The device isn't open, so there are no conflicts.
694 * Initialize it. Avoid sleep... :-)
695 */
696 DPRINT((pp, DBG_OPEN, "first open\n"));
697 tp->t_oproc = si_start;
698 tp->t_stop = si_stop;
699 tp->t_param = siparam;
700 tp->t_dev = dev;
701 tp->t_termios = mynor & SI_CALLOUT_MASK
702 ? pp->sp_iout : pp->sp_iin;
703
704 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
705
706 ++pp->sp_wopeners; /* in case of sleep in siparam */
707
708 error = siparam(tp, &tp->t_termios);
709
710 --pp->sp_wopeners;
711 if (error != 0)
712 goto out;
713 /* XXX: we should goto_top if siparam slept */
714
715 /* set initial DCD state */
716 pp->sp_last_hi_ip = ccbp->hi_ip;
717 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) {
718 (*linesw[tp->t_line].l_modem)(tp, 1);
719 }
720 }
721
722 /* whoops! we beat the close! */
723 if (pp->sp_state & SS_CLOSING) {
724 /* try and stop it from proceeding to bash the hardware */
725 pp->sp_state &= ~SS_CLOSING;
726 }
727
728 /*
729 * Wait for DCD if necessary
730 */
731 if (!(tp->t_state & TS_CARR_ON) &&
732 !IS_CALLOUT(mynor) &&
733 !(tp->t_cflag & CLOCAL) &&
734 !(flag & O_NONBLOCK)) {
735 ++pp->sp_wopeners;
736 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n"));
737 error = tsleep(TSA_CARR_ON(tp), TTIPRI|PCATCH, "sidcd", 0);
738 --pp->sp_wopeners;
739 if (error != 0)
740 goto out;
741 goto open_top;
742 }
743
744 error = (*linesw[tp->t_line].l_open)(dev, tp);
745 si_disc_optim(tp, &tp->t_termios, pp);
746 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor))
747 pp->sp_active_out = TRUE;
748
749 pp->sp_state |= SS_OPEN; /* made it! */
750
751out:
752 splx(oldspl);
753
754 DPRINT((pp, DBG_OPEN, "leaving siopen\n"));
755
756 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0)
757 sihardclose(pp);
758
759 return(error);
760}
761
762static int
763siclose(dev_t dev, int flag, int mode, struct thread *td)
764{
765 struct si_port *pp;
766 struct tty *tp;
767 int oldspl;
768 int error = 0;
769 int mynor = minor(dev);
770
771 if (IS_SPECIAL(mynor))
772 return(0);
773
774 oldspl = spltty();
775
776 pp = MINOR2PP(mynor);
777 tp = pp->sp_tty;
778
779 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n",
780 devtoname(dev), flag, mode, td, pp->sp_state));
781
782 /* did we sleep and loose a race? */
783 if (pp->sp_state & SS_CLOSING) {
784 /* error = ESOMETING? */
785 goto out;
786 }
787
788 /* begin race detection.. */
789 pp->sp_state |= SS_CLOSING;
790
791 si_write_enable(pp, 0); /* block writes for ttywait() */
792
793 /* THIS MAY SLEEP IN TTYWAIT!!! */
794 (*linesw[tp->t_line].l_close)(tp, flag);
795
796 si_write_enable(pp, 1);
797
798 /* did we sleep and somebody started another open? */
799 if (!(pp->sp_state & SS_CLOSING)) {
800 /* error = ESOMETING? */
801 goto out;
802 }
803 /* ok. we are now still on the right track.. nuke the hardware */
804
805 if (pp->sp_state & SS_LSTART) {
806 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch);
807 pp->sp_state &= ~SS_LSTART;
808 }
809
810 si_stop(tp, FREAD | FWRITE);
811
812 sihardclose(pp);
813 ttyclose(tp);
814 pp->sp_state &= ~SS_OPEN;
815
816out:
817 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n"));
818 splx(oldspl);
819 return(error);
820}
821
822static void
823sihardclose(struct si_port *pp)
824{
825 int oldspl;
826 struct tty *tp;
827 volatile struct si_channel *ccbp;
828
829 oldspl = spltty();
830
831 tp = pp->sp_tty;
832 ccbp = pp->sp_ccb; /* Find control block */
833 if (tp->t_cflag & HUPCL ||
834 (!pp->sp_active_out &&
835 !(ccbp->hi_ip & IP_DCD) &&
836 !(pp->sp_iin.c_cflag && CLOCAL)) ||
837 !(tp->t_state & TS_ISOPEN)) {
838
839 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
840 (void) si_command(pp, FCLOSE, SI_NOWAIT);
841
842 if (pp->sp_dtr_wait != 0) {
843 timeout(sidtrwakeup, pp, pp->sp_dtr_wait);
844 pp->sp_state |= SS_DTR_OFF;
845 }
846
847 }
848 pp->sp_active_out = FALSE;
849 wakeup(&pp->sp_active_out);
850 wakeup(TSA_CARR_ON(tp));
851
852 splx(oldspl);
853}
854
855
856/*
857 * called at splsoftclock()...
858 */
859static void
860sidtrwakeup(void *chan)
861{
862 struct si_port *pp;
863 int oldspl;
864
865 oldspl = spltty();
866
867 pp = (struct si_port *)chan;
868 pp->sp_state &= ~SS_DTR_OFF;
869 wakeup(&pp->sp_dtr_wait);
870
871 splx(oldspl);
872}
873
874static int
875siwrite(dev_t dev, struct uio *uio, int flag)
876{
877 struct si_port *pp;
878 struct tty *tp;
879 int error = 0;
880 int mynor = minor(dev);
881 int oldspl;
882
883 if (IS_SPECIAL(mynor)) {
884 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n"));
885 return(ENODEV);
886 }
887 pp = MINOR2PP(mynor);
888 tp = pp->sp_tty;
889 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag));
890
891 oldspl = spltty();
892 /*
893 * If writes are currently blocked, wait on the "real" tty
894 */
895 while (pp->sp_state & SS_BLOCKWRITE) {
896 pp->sp_state |= SS_WAITWRITE;
897 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n"));
898 if ((error = ttysleep(tp, (caddr_t)pp, TTOPRI|PCATCH,
899 "siwrite", tp->t_timeout))) {
900 if (error == EWOULDBLOCK)
901 error = EIO;
902 goto out;
903 }
904 }
905
906 error = (*linesw[tp->t_line].l_write)(tp, uio, flag);
907out:
908 splx(oldspl);
909 return (error);
910}
911
912
913static int
914siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
915{
916 struct si_port *pp;
917 struct tty *tp;
918 int error;
919 int mynor = minor(dev);
920 int oldspl;
921 int blocked = 0;
922#if defined(COMPAT_43)
923 u_long oldcmd;
924 struct termios term;
925#endif
926
927 if (IS_SI_IOCTL(cmd))
928 return(si_Sioctl(dev, cmd, data, flag, td));
929
930 pp = MINOR2PP(mynor);
931 tp = pp->sp_tty;
932
933 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n",
934 devtoname(dev), cmd, data, flag));
935 if (IS_STATE(mynor)) {
936 struct termios *ct;
937
938 switch (mynor & SI_STATE_MASK) {
939 case SI_INIT_STATE_MASK:
940 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin;
941 break;
942 case SI_LOCK_STATE_MASK:
943 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin;
944 break;
945 default:
946 return (ENODEV);
947 }
948 switch (cmd) {
949 case TIOCSETA:
950 error = suser(td);
951 if (error != 0)
952 return (error);
953 *ct = *(struct termios *)data;
954 return (0);
955 case TIOCGETA:
956 *(struct termios *)data = *ct;
957 return (0);
958 case TIOCGETD:
959 *(int *)data = TTYDISC;
960 return (0);
961 case TIOCGWINSZ:
962 bzero(data, sizeof(struct winsize));
963 return (0);
964 default:
965 return (ENOTTY);
966 }
967 }
968 /*
969 * Do the old-style ioctl compat routines...
970 */
971#if defined(COMPAT_43)
972 term = tp->t_termios;
973 oldcmd = cmd;
974 error = ttsetcompat(tp, &cmd, data, &term);
975 if (error != 0)
976 return (error);
977 if (cmd != oldcmd)
978 data = (caddr_t)&term;
979#endif
980 /*
981 * Do the initial / lock state business
982 */
983 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
984 int cc;
985 struct termios *dt = (struct termios *)data;
986 struct termios *lt = mynor & SI_CALLOUT_MASK
987 ? &pp->sp_lout : &pp->sp_lin;
988
989 dt->c_iflag = (tp->t_iflag & lt->c_iflag) |
990 (dt->c_iflag & ~lt->c_iflag);
991 dt->c_oflag = (tp->t_oflag & lt->c_oflag) |
992 (dt->c_oflag & ~lt->c_oflag);
993 dt->c_cflag = (tp->t_cflag & lt->c_cflag) |
994 (dt->c_cflag & ~lt->c_cflag);
995 dt->c_lflag = (tp->t_lflag & lt->c_lflag) |
996 (dt->c_lflag & ~lt->c_lflag);
997 for (cc = 0; cc < NCCS; ++cc)
998 if (lt->c_cc[cc] != 0)
999 dt->c_cc[cc] = tp->t_cc[cc];
1000 if (lt->c_ispeed != 0)
1001 dt->c_ispeed = tp->t_ispeed;
1002 if (lt->c_ospeed != 0)
1003 dt->c_ospeed = tp->t_ospeed;
1004 }
1005
1006 /*
1007 * Block user-level writes to give the ttywait()
1008 * a chance to completely drain for commands
1009 * that require the port to be in a quiescent state.
1010 */
1011 switch (cmd) {
1012 case TIOCSETAW:
1013 case TIOCSETAF:
1014 case TIOCDRAIN:
1015#ifdef COMPAT_43
1016 case TIOCSETP:
1017#endif
1018 blocked++; /* block writes for ttywait() and siparam() */
1019 si_write_enable(pp, 0);
1020 }
1021
1022 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
1023 if (error != ENOIOCTL)
1024 goto out;
1025
1026 oldspl = spltty();
1027
1028 error = ttioctl(tp, cmd, data, flag);
1029 si_disc_optim(tp, &tp->t_termios, pp);
1030 if (error != ENOIOCTL) {
1031 splx(oldspl);
1032 goto out;
1033 }
1034
1035 error = 0;
1036 switch (cmd) {
1037 case TIOCSBRK:
1038 si_command(pp, SBREAK, SI_WAIT);
1039 break;
1040 case TIOCCBRK:
1041 si_command(pp, EBREAK, SI_WAIT);
1042 break;
1043 case TIOCSDTR:
1044 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1045 break;
1046 case TIOCCDTR:
1047 (void) si_modem(pp, SET, 0);
1048 break;
1049 case TIOCMSET:
1050 (void) si_modem(pp, SET, *(int *)data);
1051 break;
1052 case TIOCMBIS:
1053 (void) si_modem(pp, BIS, *(int *)data);
1054 break;
1055 case TIOCMBIC:
1056 (void) si_modem(pp, BIC, *(int *)data);
1057 break;
1058 case TIOCMGET:
1059 *(int *)data = si_modem(pp, GET, 0);
1060 break;
1061 case TIOCMSDTRWAIT:
1062 /* must be root since the wait applies to following logins */
1063 error = suser(td);
1064 if (error == 0)
1065 pp->sp_dtr_wait = *(int *)data * hz / 100;
1066 break;
1067 case TIOCMGDTRWAIT:
1068 *(int *)data = pp->sp_dtr_wait * 100 / hz;
1069 break;
1070 default:
1071 error = ENOTTY;
1072 }
1073 splx(oldspl);
1074
1075out:
1076 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error));
1077 if (blocked)
1078 si_write_enable(pp, 1);
1079 return(error);
1080}
1081
1082/*
1083 * Handle the Specialix ioctls. All MUST be called via the CONTROL device
1084 */
1085static int
1086si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1087{
1088 struct si_softc *xsc;
1089 struct si_port *xpp;
1090 volatile struct si_reg *regp;
1091 struct si_tcsi *dp;
1092 struct si_pstat *sps;
1093 int *ip, error = 0;
1094 int oldspl;
1095 int card, port;
1096 int mynor = minor(dev);
1097
1098 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n",
1099 devtoname(dev), cmd, data, flag));
1100
1101#if 1
1102 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT));
1103 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB));
1104 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY));
1105#endif
1106
1107 if (!IS_CONTROLDEV(mynor)) {
1108 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n"));
1109 return(ENODEV);
1110 }
1111
1112 oldspl = spltty(); /* better safe than sorry */
1113
1114 ip = (int *)data;
1115
1116#define SUCHECK if ((error = suser(td))) goto out
1117
1118 switch (cmd) {
1119 case TCSIPORTS:
1120 *ip = si_Nports;
1121 goto out;
1122 case TCSIMODULES:
1123 *ip = si_Nmodules;
1124 goto out;
1125 case TCSISDBG_ALL:
1126 SUCHECK;
1127 si_debug = *ip;
1128 goto out;
1129 case TCSIGDBG_ALL:
1130 *ip = si_debug;
1131 goto out;
1132 default:
1133 /*
1134 * Check that a controller for this port exists
1135 */
1136
1137 /* may also be a struct si_pstat, a superset of si_tcsi */
1138
1139 dp = (struct si_tcsi *)data;
1140 sps = (struct si_pstat *)data;
1141 card = dp->tc_card;
1142 xsc = devclass_get_softc(si_devclass, card); /* check.. */
1143 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
1144 error = ENOENT;
1145 goto out;
1146 }
1147 /*
1148 * And check that a port exists
1149 */
1150 port = dp->tc_port;
1151 if (port < 0 || port >= xsc->sc_nport) {
1152 error = ENOENT;
1153 goto out;
1154 }
1155 xpp = xsc->sc_ports + port;
1156 regp = (struct si_reg *)xsc->sc_maddr;
1157 }
1158
1159 switch (cmd) {
1160 case TCSIDEBUG:
1161#ifdef SI_DEBUG
1162 SUCHECK;
1163 if (xpp->sp_debug)
1164 xpp->sp_debug = 0;
1165 else {
1166 xpp->sp_debug = DBG_ALL;
1167 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
1168 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
1169 }
1170 break;
1171#else
1172 error = ENODEV;
1173 goto out;
1174#endif
1175 case TCSISDBG_LEVEL:
1176 case TCSIGDBG_LEVEL:
1177#ifdef SI_DEBUG
1178 if (cmd == TCSIGDBG_LEVEL) {
1179 dp->tc_dbglvl = xpp->sp_debug;
1180 } else {
1181 SUCHECK;
1182 xpp->sp_debug = dp->tc_dbglvl;
1183 }
1184 break;
1185#else
1186 error = ENODEV;
1187 goto out;
1188#endif
1189 case TCSIGRXIT:
1190 dp->tc_int = regp->rx_int_count;
1191 break;
1192 case TCSIRXIT:
1193 SUCHECK;
1194 regp->rx_int_count = dp->tc_int;
1195 break;
1196 case TCSIGIT:
1197 dp->tc_int = regp->int_count;
1198 break;
1199 case TCSIIT:
1200 SUCHECK;
1201 regp->int_count = dp->tc_int;
1202 break;
1203 case TCSISTATE:
1204 dp->tc_int = xpp->sp_ccb->hi_ip;
1205 break;
1206 /* these next three use a different structure */
1207 case TCSI_PORT:
1208 SUCHECK;
1209 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
1210 break;
1211 case TCSI_CCB:
1212 SUCHECK;
1213 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
1214 break;
1215 case TCSI_TTY:
1216 SUCHECK;
1217 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty));
1218 break;
1219 default:
1220 error = EINVAL;
1221 goto out;
1222 }
1223out:
1224 splx(oldspl);
1225 return(error); /* success */
1226}
1227
1228/*
1229 * siparam() : Configure line params
1230 * called at spltty();
1231 * this may sleep, does not flush, nor wait for drain, nor block writes
1232 * caller must arrange this if it's important..
1233 */
1234static int
1235siparam(struct tty *tp, struct termios *t)
1236{
1237 struct si_port *pp = TP2PP(tp);
1238 volatile struct si_channel *ccbp;
1239 int oldspl, cflag, iflag, oflag, lflag;
1240 int error = 0; /* shutup gcc */
1241 int ispeed = 0; /* shutup gcc */
1242 int ospeed = 0; /* shutup gcc */
1243 BYTE val;
1244
1245 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
1246 cflag = t->c_cflag;
1247 iflag = t->c_iflag;
1248 oflag = t->c_oflag;
1249 lflag = t->c_lflag;
1250 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
1251 oflag, cflag, iflag, lflag));
1252
1253 /* XXX - if Jet host and SXDC module, use extended baud rates */
1254
1255 /* if not hung up.. */
1256 if (t->c_ospeed != 0) {
1257 /* translate baud rate to firmware values */
1258 ospeed = ttspeedtab(t->c_ospeed, bdrates);
1259 ispeed = t->c_ispeed ?
1260 ttspeedtab(t->c_ispeed, bdrates) : ospeed;
1261
1262 /* enforce legit baud rate */
1263 if (ospeed < 0 || ispeed < 0)
1264 return (EINVAL);
1265 }
1266
1267 oldspl = spltty();
1268
1269 ccbp = pp->sp_ccb;
1270
1271 /* ========== set hi_break ========== */
1272 val = 0;
1273 if (iflag & IGNBRK) /* Breaks */
1274 val |= BR_IGN;
1275 if (iflag & BRKINT) /* Interrupt on break? */
1276 val |= BR_INT;
1277 if (iflag & PARMRK) /* Parity mark? */
1278 val |= BR_PARMRK;
1279 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
1280 val |= BR_PARIGN;
1281 ccbp->hi_break = val;
1282
1283 /* ========== set hi_csr ========== */
1284 /* if not hung up.. */
1285 if (t->c_ospeed != 0) {
1286 /* Set I/O speeds */
1287 val = (ispeed << 4) | ospeed;
1288 }
1289 ccbp->hi_csr = val;
1290
1291 /* ========== set hi_mr2 ========== */
1292 val = 0;
1293 if (cflag & CSTOPB) /* Stop bits */
1294 val |= MR2_2_STOP;
1295 else
1296 val |= MR2_1_STOP;
1297 /*
1298 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1299 * a DCE, hence the reverse sense of RTS and CTS
1300 */
1301 /* Output Flow - RTS must be raised before data can be sent */
1302 if (cflag & CCTS_OFLOW)
1303 val |= MR2_RTSCONT;
1304
1305 ccbp->hi_mr2 = val;
1306
1307 /* ========== set hi_mr1 ========== */
1308 val = 0;
1309 if (!(cflag & PARENB)) /* Parity */
1310 val |= MR1_NONE;
1311 else
1312 val |= MR1_WITH;
1313 if (cflag & PARODD)
1314 val |= MR1_ODD;
1315
1316 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1317 val |= MR1_8_BITS;
1318 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1319 val |= MR1_7_BITS;
1320 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1321 val |= MR1_6_BITS;
1322 } else { /* Must be 5 */
1323 val |= MR1_5_BITS;
1324 }
1325 /*
1326 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1327 * a DCE, hence the reverse sense of RTS and CTS
1328 */
1329 /* Input Flow - CTS is raised when port is ready to receive data */
1330 if (cflag & CRTS_IFLOW)
1331 val |= MR1_CTSCONT;
1332
1333 ccbp->hi_mr1 = val;
1334
1335 /* ========== set hi_mask ========== */
1336 val = 0xff;
1337 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1338 val &= 0xFF;
1339 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1340 val &= 0x7F;
1341 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1342 val &= 0x3F;
1343 } else { /* Must be 5 */
1344 val &= 0x1F;
1345 }
1346 if (iflag & ISTRIP)
1347 val &= 0x7F;
1348
1349 ccbp->hi_mask = val;
1350
1351 /* ========== set hi_prtcl ========== */
1352 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
1353 if (iflag & IXANY)
1354 val |= SP_TANY;
1355 if (iflag & IXON)
1356 val |= SP_TXEN;
1357 if (iflag & IXOFF)
1358 val |= SP_RXEN;
1359 if (iflag & INPCK)
1360 val |= SP_PAEN;
1361
1362 ccbp->hi_prtcl = val;
1363
1364
1365 /* ========== set hi_{rx|tx}{on|off} ========== */
1366 /* XXX: the card TOTALLY shields us from the flow control... */
1367 ccbp->hi_txon = t->c_cc[VSTART];
1368 ccbp->hi_txoff = t->c_cc[VSTOP];
1369
1370 ccbp->hi_rxon = t->c_cc[VSTART];
1371 ccbp->hi_rxoff = t->c_cc[VSTOP];
1372
1373 /* ========== send settings to the card ========== */
1374 /* potential sleep here */
1375 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */
1376 si_command(pp, LOPEN, SI_WAIT); /* open it */
1377 else
1378 si_command(pp, CONFIG, SI_WAIT); /* change params */
1379
1380 /* ========== set DTR etc ========== */
1381 /* Hangup if ospeed == 0 */
1382 if (t->c_ospeed == 0) {
1383 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
1384 } else {
1385 /*
1386 * If the previous speed was 0, may need to re-enable
1387 * the modem signals
1388 */
1389 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1390 }
1391
1392 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n",
1393 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break));
1394
1395 splx(oldspl);
1396 return(error);
1397}
1398
1399/*
1400 * Enable or Disable the writes to this channel...
1401 * "state" -> enabled = 1; disabled = 0;
1402 */
1403static void
1404si_write_enable(struct si_port *pp, int state)
1405{
1406 int oldspl;
1407
1408 oldspl = spltty();
1409
1410 if (state) {
1411 pp->sp_state &= ~SS_BLOCKWRITE;
1412 if (pp->sp_state & SS_WAITWRITE) {
1413 pp->sp_state &= ~SS_WAITWRITE;
1414 /* thunder away! */
1415 wakeup(pp);
1416 }
1417 } else {
1418 pp->sp_state |= SS_BLOCKWRITE;
1419 }
1420
1421 splx(oldspl);
1422}
1423
1424/*
1425 * Set/Get state of modem control lines.
1426 * Due to DCE-like behaviour of the adapter, some signals need translation:
1427 * TIOCM_DTR DSR
1428 * TIOCM_RTS CTS
1429 */
1430static int
1431si_modem(struct si_port *pp, enum si_mctl cmd, int bits)
1432{
1433 volatile struct si_channel *ccbp;
1434 int x;
1435
1436 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits));
1437 ccbp = pp->sp_ccb; /* Find channel address */
1438 switch (cmd) {
1439 case GET:
1440 x = ccbp->hi_ip;
1441 bits = TIOCM_LE;
1442 if (x & IP_DCD) bits |= TIOCM_CAR;
1443 if (x & IP_DTR) bits |= TIOCM_DTR;
1444 if (x & IP_RTS) bits |= TIOCM_RTS;
1445 if (x & IP_RI) bits |= TIOCM_RI;
1446 return(bits);
1447 case SET:
1448 ccbp->hi_op &= ~(OP_DSR|OP_CTS);
1449 /* fall through */
1450 case BIS:
1451 x = 0;
1452 if (bits & TIOCM_DTR)
1453 x |= OP_DSR;
1454 if (bits & TIOCM_RTS)
1455 x |= OP_CTS;
1456 ccbp->hi_op |= x;
1457 break;
1458 case BIC:
1459 if (bits & TIOCM_DTR)
1460 ccbp->hi_op &= ~OP_DSR;
1461 if (bits & TIOCM_RTS)
1462 ccbp->hi_op &= ~OP_CTS;
1463 }
1464 return 0;
1465}
1466
1467/*
1468 * Handle change of modem state
1469 */
1470static void
1471si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1472{
1473 /* if a modem dev */
1474 if (hi_ip & IP_DCD) {
1475 if (!(pp->sp_last_hi_ip & IP_DCD)) {
1476 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n",
1477 tp->t_line));
1478 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
1479 }
1480 } else {
1481 if (pp->sp_last_hi_ip & IP_DCD) {
1482 DPRINT((pp, DBG_INTR, "modem carr off\n"));
1483 if ((*linesw[tp->t_line].l_modem)(tp, 0))
1484 (void) si_modem(pp, SET, 0);
1485 }
1486 }
1487 pp->sp_last_hi_ip = hi_ip;
1488
1489}
1490
1491/*
1492 * Poller to catch missed interrupts.
1493 *
1494 * Note that the SYSV Specialix drivers poll at 100 times per second to get
1495 * better response. We could really use a "periodic" version timeout(). :-)
1496 */
1497#ifdef POLL
1498static void
1499si_poll(void *nothing)
1500{
1501 struct si_softc *sc;
1502 int i;
1503 volatile struct si_reg *regp;
1504 struct si_port *pp;
1505 int lost, oldspl, port;
1506
1507 DPRINT((0, DBG_POLL, "si_poll()\n"));
1508 oldspl = spltty();
1509 if (in_intr)
1510 goto out;
1511 lost = 0;
1512 for (i = 0; i < si_numunits; i++) {
1513 sc = devclass_get_softc(si_devclass, i);
1514 if (sc == NULL || sc->sc_type == SIEMPTY)
1515 continue;
1516 regp = (struct si_reg *)sc->sc_maddr;
1517
1518 /*
1519 * See if there has been a pending interrupt for 2 seconds
1520 * or so. The test (int_scounter >= 200) won't correspond
1521 * to 2 seconds if int_count gets changed.
1522 */
1523 if (regp->int_pending != 0) {
1524 if (regp->int_scounter >= 200 &&
1525 regp->initstat == 1) {
1526 printf("si%d: lost intr\n", i);
1527 lost++;
1528 }
1529 } else {
1530 regp->int_scounter = 0;
1531 }
1532
1533 /*
1534 * gripe about no input flow control..
1535 */
1536 pp = sc->sc_ports;
1537 for (port = 0; port < sc->sc_nport; pp++, port++) {
1538 if (pp->sp_delta_overflows > 0) {
1539 printf("si%d: %d tty level buffer overflows\n",
1540 i, pp->sp_delta_overflows);
1541 pp->sp_delta_overflows = 0;
1542 }
1543 }
1544 }
1545 if (lost || si_realpoll)
1546 si_intr(NULL); /* call intr with fake vector */
1547out:
1548 splx(oldspl);
1549
1550 timeout(si_poll, (caddr_t)0L, si_pollrate);
1551}
1552#endif /* ifdef POLL */
1553
1554/*
1555 * The interrupt handler polls ALL ports on ALL adapters each time
1556 * it is called.
1557 */
1558
1559static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1560static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1561
1562void
1563si_intr(void *arg)
1564{
1565 struct si_softc *sc;
1566 struct si_port *pp;
1567 volatile struct si_channel *ccbp;
1568 struct tty *tp;
1569 volatile caddr_t maddr;
1570 BYTE op, ip;
1571 int x, card, port, n, i, isopen;
1572 volatile BYTE *z;
1573 BYTE c;
1574
1575 sc = arg;
1576
1577 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1578 if (in_intr)
1579 return;
1580 in_intr = 1;
1581
1582 /*
1583 * When we get an int we poll all the channels and do ALL pending
1584 * work, not just the first one we find. This allows all cards to
1585 * share the same vector.
1586 *
1587 * XXX - But if we're sharing the vector with something that's NOT
1588 * a SI/XIO/SX card, we may be making more work for ourselves.
1589 */
1590 for (card = 0; card < si_numunits; card++) {
1591 sc = devclass_get_softc(si_devclass, card);
1592 if (sc == NULL || sc->sc_type == SIEMPTY)
1593 continue;
1594
1595 /*
1596 * First, clear the interrupt
1597 */
1598 switch(sc->sc_type) {
1599 case SIHOST:
1600 maddr = sc->sc_maddr;
1601 ((volatile struct si_reg *)maddr)->int_pending = 0;
1602 /* flag nothing pending */
1603 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
1604 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
1605 break;
1606 case SIHOST2:
1607 maddr = sc->sc_maddr;
1608 ((volatile struct si_reg *)maddr)->int_pending = 0;
1609 *(maddr+SIPLIRQCLR) = 0x00;
1610 *(maddr+SIPLIRQCLR) = 0x10;
1611 break;
1612 case SIPCI:
1613 maddr = sc->sc_maddr;
1614 ((volatile struct si_reg *)maddr)->int_pending = 0;
1615 *(maddr+SIPCIINTCL) = 0x0;
1616 break;
1617 case SIJETPCI: /* fall through to JETISA case */
1618 case SIJETISA:
1619 maddr = sc->sc_maddr;
1620 ((volatile struct si_reg *)maddr)->int_pending = 0;
1621 *(maddr+SIJETINTCL) = 0x0;
1622 break;
1623 case SIEISA:
1624 maddr = sc->sc_maddr;
1625 ((volatile struct si_reg *)maddr)->int_pending = 0;
1626 (void)inb(sc->sc_iobase + 3);
1627 break;
1628 case SIEMPTY:
1629 default:
1630 continue;
1631 }
1632 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1633
1634 /*
1635 * check each port
1636 */
1637 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1638 pp++, port++) {
1639 ccbp = pp->sp_ccb;
1640 tp = pp->sp_tty;
1641
1642 /*
1643 * See if a command has completed ?
1644 */
1645 if (ccbp->hi_stat != pp->sp_pend) {
1646 DPRINT((pp, DBG_INTR,
1647 "si_intr hi_stat = 0x%x, pend = %d\n",
1648 ccbp->hi_stat, pp->sp_pend));
1649 switch(pp->sp_pend) {
1650 case LOPEN:
1651 case MPEND:
1652 case MOPEN:
1653 case CONFIG:
1654 case SBREAK:
1655 case EBREAK:
1656 pp->sp_pend = ccbp->hi_stat;
1657 /* sleeping in si_command */
1658 wakeup(&pp->sp_state);
1659 break;
1660 default:
1661 pp->sp_pend = ccbp->hi_stat;
1662 }
1663 }
1664
1665 /*
1666 * Continue on if it's closed
1667 */
1668 if (ccbp->hi_stat == IDLE_CLOSE) {
1669 continue;
1670 }
1671
1672 /*
1673 * Do modem state change if not a local device
1674 */
1675 si_modem_state(pp, tp, ccbp->hi_ip);
1676
1677 /*
1678 * Check to see if we should 'receive' characters.
1679 */
1680 if (tp->t_state & TS_CONNECTED &&
1681 tp->t_state & TS_ISOPEN)
1682 isopen = 1;
1683 else
1684 isopen = 0;
1685
1686 /*
1687 * Do input break processing
1688 */
1689 if (ccbp->hi_state & ST_BREAK) {
1690 if (isopen) {
1691 (*linesw[tp->t_line].l_rint)(TTY_BI, tp);
1692 }
1693 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1694 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1695 }
1696
1697 /*
1698 * Do RX stuff - if not open then dump any characters.
1699 * XXX: This is VERY messy and needs to be cleaned up.
1700 *
1701 * XXX: can we leave data in the host adapter buffer
1702 * when the clists are full? That may be dangerous
1703 * if the user cannot get an interrupt signal through.
1704 */
1705
1706 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
1707
1708 if (!isopen) {
1709 ccbp->hi_rxopos = ccbp->hi_rxipos;
1710 goto end_rx;
1711 }
1712
1713 /*
1714 * If the tty input buffers are blocked, stop emptying
1715 * the incoming buffers and let the auto flow control
1716 * assert..
1717 */
1718 if (tp->t_state & TS_TBLOCK) {
1719 goto end_rx;
1720 }
1721
1722 /*
1723 * Process read characters if not skipped above
1724 */
1725 op = ccbp->hi_rxopos;
1726 ip = ccbp->hi_rxipos;
1727 c = ip - op;
1728 if (c == 0) {
1729 goto end_rx;
1730 }
1731
1732 n = c & 0xff;
1733 if (n > 250)
1734 n = 250;
1735
1736 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1737 n, op, ip));
1738
1739 /*
1740 * Suck characters out of host card buffer into the
1741 * "input staging buffer" - so that we dont leave the
1742 * host card in limbo while we're possibly echoing
1743 * characters and possibly flushing input inside the
1744 * ldisc l_rint() routine.
1745 */
1746 if (n <= SI_BUFFERSIZE - op) {
1747
1748 DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
1749 z = ccbp->hi_rxbuf + op;
1750 si_vbcopy(z, si_rxbuf, n);
1751
1752 op += n;
1753 } else {
1754 x = SI_BUFFERSIZE - op;
1755
1756 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
1757 z = ccbp->hi_rxbuf + op;
1758 si_vbcopy(z, si_rxbuf, x);
1759
1760 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
1761 n - x));
1762 z = ccbp->hi_rxbuf;
1763 si_vbcopy(z, si_rxbuf + x, n - x);
1764
1765 op += n;
1766 }
1767
1768 /* clear collected characters from buffer */
1769 ccbp->hi_rxopos = op;
1770
1771 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1772 n, op, ip));
1773
1774 /*
1775 * at this point...
1776 * n = number of chars placed in si_rxbuf
1777 */
1778
1779 /*
1780 * Avoid the grotesquely inefficient lineswitch
1781 * routine (ttyinput) in "raw" mode. It usually
1782 * takes about 450 instructions (that's without
1783 * canonical processing or echo!). slinput is
1784 * reasonably fast (usually 40 instructions
1785 * plus call overhead).
1786 */
1787 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1788
1789 /* block if the driver supports it */
1790 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER &&
1791 (tp->t_cflag & CRTS_IFLOW ||
1792 tp->t_iflag & IXOFF) &&
1793 !(tp->t_state & TS_TBLOCK))
1794 ttyblock(tp);
1795
1796 tk_nin += n;
1797 tk_rawcc += n;
1798 tp->t_rawcc += n;
1799
1800 pp->sp_delta_overflows +=
1801 b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
1802
1803 ttwakeup(tp);
1804 if (tp->t_state & TS_TTSTOP &&
1805 (tp->t_iflag & IXANY ||
1806 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1807 tp->t_state &= ~TS_TTSTOP;
1808 tp->t_lflag &= ~FLUSHO;
1809 si_start(tp);
1810 }
1811 } else {
1812 /*
1813 * It'd be nice to not have to go through the
1814 * function call overhead for each char here.
1815 * It'd be nice to block input it, saving a
1816 * loop here and the call/return overhead.
1817 */
1818 for(x = 0; x < n; x++) {
1819 i = si_rxbuf[x];
1820 if ((*linesw[tp->t_line].l_rint)(i, tp)
1821 == -1) {
1822 pp->sp_delta_overflows++;
1823 }
1824 }
1825 }
1826 goto more_rx; /* try for more until RXbuf is empty */
1827
1828 end_rx: /* XXX: Again, sorry about the gotos.. :-) */
1829
1830 /*
1831 * Do TX stuff
1832 */
1833 (*linesw[tp->t_line].l_start)(tp);
1834
1835 } /* end of for (all ports on this controller) */
1836 } /* end of for (all controllers) */
1837
1838 in_intr = 0;
1839 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1840}
1841
1842/*
1843 * Nudge the transmitter...
1844 *
1845 * XXX: I inherited some funny code here. It implies the host card only
1846 * interrupts when the transmit buffer reaches the low-water-mark, and does
1847 * not interrupt when it's actually hits empty. In some cases, we have
1848 * processes waiting for complete drain, and we need to simulate an interrupt
1849 * about when we think the buffer is going to be empty (and retry if not).
1850 * I really am not certain about this... I *need* the hardware manuals.
1851 */
1852static void
1853si_start(struct tty *tp)
1854{
1855 struct si_port *pp;
1856 volatile struct si_channel *ccbp;
1857 struct clist *qp;
1858 BYTE ipos;
1859 int nchar;
1860 int oldspl, count, n, amount, buffer_full;
1861
1862 oldspl = spltty();
1863
1864 qp = &tp->t_outq;
1865 pp = TP2PP(tp);
1866
1867 DPRINT((pp, DBG_ENTRY|DBG_START,
1868 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n",
1869 tp, tp->t_state, pp->sp_state, qp->c_cc));
1870
1871 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
1872 goto out;
1873
1874 buffer_full = 0;
1875 ccbp = pp->sp_ccb;
1876
1877 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1878 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count));
1879
1880 while ((nchar = qp->c_cc) > 0) {
1881 if ((BYTE)count >= 255) {
1882 buffer_full++;
1883 break;
1884 }
1885 amount = min(nchar, (255 - (BYTE)count));
1886 ipos = (unsigned int)ccbp->hi_txipos;
1887 n = q_to_b(&tp->t_outq, si_txbuf, amount);
1888 /* will it fit in one lump? */
1889 if ((SI_BUFFERSIZE - ipos) >= n) {
1890 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n);
1891 } else {
1892 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos],
1893 SI_BUFFERSIZE - ipos);
1894 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos),
1895 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos));
1896 }
1897 ccbp->hi_txipos += n;
1898 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1899 }
1900
1901 if (count != 0 && nchar == 0) {
1902 tp->t_state |= TS_BUSY;
1903 } else {
1904 tp->t_state &= ~TS_BUSY;
1905 }
1906
1907 /* wakeup time? */
1908 ttwwakeup(tp);
1909
1910 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n",
1911 (BYTE)count, nchar, tp->t_state));
1912
1913 if (tp->t_state & TS_BUSY)
1914 {
1915 int time;
1916
1917 time = ttspeedtab(tp->t_ospeed, chartimes);
1918
1919 if (time > 0) {
1920 if (time < nchar)
1921 time = nchar / time;
1922 else
1923 time = 2;
1924 } else {
1925 DPRINT((pp, DBG_START,
1926 "bad char time value! %d\n", time));
1927 time = hz/10;
1928 }
1929
1930 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) {
1931 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch);
1932 } else {
1933 pp->sp_state |= SS_LSTART;
1934 }
1935 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
1936 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time);
1937 }
1938
1939out:
1940 splx(oldspl);
1941 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1942}
1943
1944/*
1945 * Note: called at splsoftclock from the timeout code
1946 * This has to deal with two things... cause wakeups while waiting for
1947 * tty drains on last process exit, and call l_start at about the right
1948 * time for protocols like ppp.
1949 */
1950static void
1951si_lstart(void *arg)
1952{
1953 struct si_port *pp = arg;
1954 struct tty *tp;
1955 int oldspl;
1956
1957 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
1958 pp, pp->sp_state));
1959
1960 oldspl = spltty();
1961
1962 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) {
1963 splx(oldspl);
1964 return;
1965 }
1966 pp->sp_state &= ~SS_LSTART;
1967 pp->sp_state |= SS_INLSTART;
1968
1969 tp = pp->sp_tty;
1970
1971 /* deal with the process exit case */
1972 ttwwakeup(tp);
1973
1974 /* nudge protocols - eg: ppp */
1975 (*linesw[tp->t_line].l_start)(tp);
1976
1977 pp->sp_state &= ~SS_INLSTART;
1978 splx(oldspl);
1979}
1980
1981/*
1982 * Stop output on a line. called at spltty();
1983 */
1984static void
1985si_stop(struct tty *tp, int rw)
1986{
1987 volatile struct si_channel *ccbp;
1988 struct si_port *pp;
1989
1990 pp = TP2PP(tp);
1991 ccbp = pp->sp_ccb;
1992
1993 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
1994
1995 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
1996 if (rw & FWRITE) {
1997 /* what level are we meant to be flushing anyway? */
1998 if (tp->t_state & TS_BUSY) {
1999 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT);
2000 tp->t_state &= ~TS_BUSY;
2001 ttwwakeup(tp); /* Bruce???? */
2002 }
2003 }
2004#if 1 /* XXX: this doesn't work right yet.. */
2005 /* XXX: this may have been failing because we used to call l_rint()
2006 * while we were looping based on these two counters. Now, we collect
2007 * the data and then loop stuffing it into l_rint(), making this
2008 * useless. Should we cause this to blow away the staging buffer?
2009 */
2010 if (rw & FREAD) {
2011 ccbp->hi_rxopos = ccbp->hi_rxipos;
2012 }
2013#endif
2014}
2015
2016/*
2017 * Issue a command to the host card CPU.
2018 */
2019
2020static void
2021si_command(struct si_port *pp, int cmd, int waitflag)
2022{
2023 int oldspl;
2024 volatile struct si_channel *ccbp = pp->sp_ccb;
2025 int x;
2026
2027 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n",
2028 pp, cmd, waitflag, ccbp->hi_stat));
2029
2030 oldspl = spltty(); /* Keep others out */
2031
2032 /* wait until it's finished what it was doing.. */
2033 /* XXX: sits in IDLE_BREAK until something disturbs it or break
2034 * is turned off. */
2035 while((x = ccbp->hi_stat) != IDLE_OPEN &&
2036 x != IDLE_CLOSE &&
2037 x != IDLE_BREAK &&
2038 x != cmd) {
2039 if (in_intr) { /* Prevent sleep in intr */
2040 DPRINT((pp, DBG_PARAM,
2041 "cmd intr collision - completing %d\trequested %d\n",
2042 x, cmd));
2043 splx(oldspl);
2044 return;
2045 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH,
2046 "sicmd1", 1)) {
2047 splx(oldspl);
2048 return;
2049 }
2050 }
2051 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
2052
2053 /* if there was a pending command, cause a state-change wakeup */
2054 switch(pp->sp_pend) {
2055 case LOPEN:
2056 case MPEND:
2057 case MOPEN:
2058 case CONFIG:
2059 case SBREAK:
2060 case EBREAK:
2061 wakeup(&pp->sp_state);
2062 break;
2063 default:
2064 break;
2065 }
2066
2067 pp->sp_pend = cmd; /* New command pending */
2068 ccbp->hi_stat = cmd; /* Post it */
2069
2070 if (waitflag) {
2071 if (in_intr) { /* If in interrupt handler */
2072 DPRINT((pp, DBG_PARAM,
2073 "attempt to sleep in si_intr - cmd req %d\n",
2074 cmd));
2075 splx(oldspl);
2076 return;
2077 } else while(ccbp->hi_stat != IDLE_OPEN &&
2078 ccbp->hi_stat != IDLE_BREAK) {
2079 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH,
2080 "sicmd2", 0))
2081 break;
2082 }
2083 }
2084 splx(oldspl);
2085}
2086
2087static void
2088si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp)
2089{
2090 /*
2091 * XXX can skip a lot more cases if Smarts. Maybe
2092 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we
2093 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state.
2094 */
2095 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) &&
2096 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) &&
2097 (!(t->c_iflag & PARMRK) ||
2098 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) &&
2099 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) &&
2100 linesw[tp->t_line].l_rint == ttyinput)
2101 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2102 else
2103 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2104 pp->sp_hotchar = linesw[tp->t_line].l_hotchar;
2105 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n",
2106 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off",
2107 pp->sp_hotchar));
2108}
2109
2110
2111#ifdef SI_DEBUG
2112
2113void
2114si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
2115{
2116 va_list ap;
2117
2118 if ((pp == NULL && (si_debug&flags)) ||
2119 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
2120 if (pp != NULL)
2121 printf("%ci%d(%d): ", 's',
2122 (int)SI_CARD(minor(pp->sp_tty->t_dev)),
2123 (int)SI_PORT(minor(pp->sp_tty->t_dev)));
2124 va_start(ap, fmt);
2125 vprintf(fmt, ap);
2126 va_end(ap);
2127 }
2128}
2129
2130static char *
2131si_mctl2str(enum si_mctl cmd)
2132{
2133 switch (cmd) {
2134 case GET:
2135 return("GET");
2136 case SET:
2137 return("SET");
2138 case BIS:
2139 return("BIS");
2140 case BIC:
2141 return("BIC");
2142 }
2143 return("BAD");
2144}
2145
2146#endif /* DEBUG */
2147
2148static char *
2149si_modulename(int host_type, int uart_type)
2150{
2151 switch (host_type) {
2152 /* Z280 based cards */
2153 case SIEISA:
2154 case SIHOST2:
2155 case SIHOST:
2156 case SIPCI:
2157 switch (uart_type) {
2158 case 0:
2159 return(" (XIO)");
2160 case 1:
2161 return(" (SI)");
2162 }
2163 break;
2164 /* T225 based hosts */
2165 case SIJETPCI:
2166 case SIJETISA:
2167 switch (uart_type) {
2168 case 0:
2169 return(" (SI)");
2170 case 40:
2171 return(" (XIO)");
2172 case 72:
2173 return(" (SXDC)");
2174 }
2175 break;
2176 }
2177 return("");
2178}
| 45
46#include <sys/param.h>
47#include <sys/systm.h>
48#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
49#include <sys/ioctl_compat.h>
50#endif
51#include <sys/tty.h>
52#include <sys/conf.h>
53#include <sys/fcntl.h>
54#include <sys/kernel.h>
55#include <sys/malloc.h>
56#include <sys/sysctl.h>
57#include <sys/bus.h>
58#include <machine/bus.h>
59#include <sys/rman.h>
60#include <machine/resource.h>
61
62
63#include <vm/vm.h>
64#include <vm/pmap.h>
65
66#include <machine/stdarg.h>
67
68#include <dev/si/sireg.h>
69#include <dev/si/sivar.h>
70#include <dev/si/si.h>
71
72/*
73 * This device driver is designed to interface the Specialix International
74 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA,
75 * EISA or PCI bus machine.
76 *
77 * The controller is interfaced to the host via dual port RAM
78 * and an interrupt.
79 *
80 * The code for the Host 1 (very old ISA cards) has not been tested.
81 */
82
83#define POLL /* turn on poller to scan for lost interrupts */
84#define REALPOLL /* on each poll, scan for work regardless */
85#define POLLHZ (hz/10) /* 10 times per second */
86#define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE)
87#define INT_COUNT 25000 /* max of 125 ints per second */
88#define JET_INT_COUNT 100 /* max of 100 ints per second */
89#define RXINT_COUNT 1 /* one rxint per 10 milliseconds */
90
91enum si_mctl { GET, SET, BIS, BIC };
92
93static void si_command(struct si_port *, int, int);
94static int si_modem(struct si_port *, enum si_mctl, int);
95static void si_write_enable(struct si_port *, int);
96static int si_Sioctl(dev_t, u_long, caddr_t, int, struct thread *);
97static void si_start(struct tty *);
98static void si_stop(struct tty *, int);
99static timeout_t si_lstart;
100static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp);
101static void sihardclose(struct si_port *pp);
102static void sidtrwakeup(void *chan);
103
104#ifdef SI_DEBUG
105static char *si_mctl2str(enum si_mctl cmd);
106#endif
107
108static int siparam(struct tty *, struct termios *);
109
110static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip);
111static char * si_modulename(int host_type, int uart_type);
112
113static d_open_t siopen;
114static d_close_t siclose;
115static d_write_t siwrite;
116static d_ioctl_t siioctl;
117
118#define CDEV_MAJOR 68
119static struct cdevsw si_cdevsw = {
120 .d_open = siopen,
121 .d_close = siclose,
122 .d_read = ttyread,
123 .d_write = siwrite,
124 .d_ioctl = siioctl,
125 .d_poll = ttypoll,
126 .d_name = "si",
127 .d_maj = CDEV_MAJOR,
128 .d_flags = D_TTY,
129 .d_kqfilter = ttykqfilter,
130};
131
132static int si_Nports;
133static int si_Nmodules;
134static int si_debug = 0; /* data, not bss, so it's patchable */
135
136SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, "");
137TUNABLE_INT("machdep.si_debug", &si_debug);
138
139static int si_numunits;
140
141devclass_t si_devclass;
142
143#ifndef B2000 /* not standard, but the hardware knows it. */
144# define B2000 2000
145#endif
146static struct speedtab bdrates[] = {
147 { B75, CLK75, }, /* 0x0 */
148 { B110, CLK110, }, /* 0x1 */
149 { B150, CLK150, }, /* 0x3 */
150 { B300, CLK300, }, /* 0x4 */
151 { B600, CLK600, }, /* 0x5 */
152 { B1200, CLK1200, }, /* 0x6 */
153 { B2000, CLK2000, }, /* 0x7 */
154 { B2400, CLK2400, }, /* 0x8 */
155 { B4800, CLK4800, }, /* 0x9 */
156 { B9600, CLK9600, }, /* 0xb */
157 { B19200, CLK19200, }, /* 0xc */
158 { B38400, CLK38400, }, /* 0x2 (out of order!) */
159 { B57600, CLK57600, }, /* 0xd */
160 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */
161 { -1, -1 },
162};
163
164
165/* populated with approx character/sec rates - translated at card
166 * initialisation time to chars per tick of the clock */
167static int done_chartimes = 0;
168static struct speedtab chartimes[] = {
169 { B75, 8, },
170 { B110, 11, },
171 { B150, 15, },
172 { B300, 30, },
173 { B600, 60, },
174 { B1200, 120, },
175 { B2000, 200, },
176 { B2400, 240, },
177 { B4800, 480, },
178 { B9600, 960, },
179 { B19200, 1920, },
180 { B38400, 3840, },
181 { B57600, 5760, },
182 { B115200, 11520, },
183 { -1, -1 },
184};
185static volatile int in_intr = 0; /* Inside interrupt handler? */
186
187#ifdef POLL
188static int si_pollrate; /* in addition to irq */
189static int si_realpoll = 0; /* poll HW on timer */
190
191SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, "");
192SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, "");
193
194static int init_finished = 0;
195static void si_poll(void *);
196#endif
197
198/*
199 * Array of adapter types and the corresponding RAM size. The order of
200 * entries here MUST match the ordinal of the adapter type.
201 */
202static char *si_type[] = {
203 "EMPTY",
204 "SIHOST",
205 "SIMCA", /* FreeBSD does not support Microchannel */
206 "SIHOST2",
207 "SIEISA",
208 "SIPCI",
209 "SXPCI",
210 "SXISA",
211};
212
213/*
214 * We have to make an 8 bit version of bcopy, since some cards can't
215 * deal with 32 bit I/O
216 */
217static void __inline
218si_bcopy(const void *src, void *dst, size_t len)
219{
220 while (len--)
221 *(((u_char *)dst)++) = *(((const u_char *)src)++);
222}
223static void __inline
224si_vbcopy(const volatile void *src, void *dst, size_t len)
225{
226 while (len--)
227 *(((u_char *)dst)++) = *(((const volatile u_char *)src)++);
228}
229static void __inline
230si_bcopyv(const void *src, volatile void *dst, size_t len)
231{
232 while (len--)
233 *(((volatile u_char *)dst)++) = *(((const u_char *)src)++);
234}
235
236
237/*
238 * Attach the device. Initialize the card.
239 */
240int
241siattach(device_t dev)
242{
243 int unit;
244 struct si_softc *sc;
245 struct si_port *pp;
246 volatile struct si_channel *ccbp;
247 volatile struct si_reg *regp;
248 volatile caddr_t maddr;
249 struct si_module *modp;
250 struct speedtab *spt;
251 int nmodule, nport, x, y;
252 int uart_type;
253
254 sc = device_get_softc(dev);
255 unit = device_get_unit(dev);
256
257 sc->sc_typename = si_type[sc->sc_type];
258 if (si_numunits < unit + 1)
259 si_numunits = unit + 1;
260
261 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit));
262
263#ifdef POLL
264 if (si_pollrate == 0) {
265 si_pollrate = POLLHZ; /* in addition to irq */
266#ifdef REALPOLL
267 si_realpoll = 1; /* scan always */
268#endif
269 }
270#endif
271
272 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit,
273 sc->sc_typename, sc->sc_paddr, sc->sc_maddr));
274
275 sc->sc_ports = NULL; /* mark as uninitialised */
276
277 maddr = sc->sc_maddr;
278
279 /* Stop the CPU first so it won't stomp around while we load */
280
281 switch (sc->sc_type) {
282 case SIEISA:
283 outb(sc->sc_iobase + 2, sc->sc_irq << 4);
284 break;
285 case SIPCI:
286 *(maddr+SIPCIRESET) = 0;
287 break;
288 case SIJETPCI: /* fall through to JET ISA */
289 case SIJETISA:
290 *(maddr+SIJETCONFIG) = 0;
291 break;
292 case SIHOST2:
293 *(maddr+SIPLRESET) = 0;
294 break;
295 case SIHOST:
296 *(maddr+SIRESET) = 0;
297 break;
298 default: /* this should never happen */
299 printf("si%d: unsupported configuration\n", unit);
300 return EINVAL;
301 break;
302 }
303
304 /* OK, now lets download the download code */
305
306 if (SI_ISJET(sc->sc_type)) {
307 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n",
308 unit, si3_t225_dsize));
309 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr,
310 si3_t225_dsize);
311 DPRINT((0, DBG_DOWNLOAD,
312 "si%d: jet_bootstrap: nbytes %d -> %x\n",
313 unit, si3_t225_bsize, si3_t225_bootloadaddr));
314 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr,
315 si3_t225_bsize);
316 } else {
317 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n",
318 unit, si2_z280_dsize));
319 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr,
320 si2_z280_dsize);
321 }
322
323 /* Now start the CPU */
324
325 switch (sc->sc_type) {
326 case SIEISA:
327 /* modify the download code to tell it that it's on an EISA */
328 *(maddr + 0x42) = 1;
329 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4);
330 (void)inb(sc->sc_iobase + 3); /* reset interrupt */
331 break;
332 case SIPCI:
333 /* modify the download code to tell it that it's on a PCI */
334 *(maddr+0x42) = 1;
335 *(maddr+SIPCIRESET) = 1;
336 *(maddr+SIPCIINTCL) = 0;
337 break;
338 case SIJETPCI:
339 *(maddr+SIJETRESET) = 0;
340 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN;
341 break;
342 case SIJETISA:
343 *(maddr+SIJETRESET) = 0;
344 switch (sc->sc_irq) {
345 case 9:
346 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90;
347 break;
348 case 10:
349 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0;
350 break;
351 case 11:
352 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0;
353 break;
354 case 12:
355 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0;
356 break;
357 case 15:
358 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0;
359 break;
360 }
361 break;
362 case SIHOST:
363 *(maddr+SIRESET_CL) = 0;
364 *(maddr+SIINTCL_CL) = 0;
365 break;
366 case SIHOST2:
367 *(maddr+SIPLRESET) = 0x10;
368 switch (sc->sc_irq) {
369 case 11:
370 *(maddr+SIPLIRQ11) = 0x10;
371 break;
372 case 12:
373 *(maddr+SIPLIRQ12) = 0x10;
374 break;
375 case 15:
376 *(maddr+SIPLIRQ15) = 0x10;
377 break;
378 }
379 *(maddr+SIPLIRQCLR) = 0x10;
380 break;
381 default: /* this should _REALLY_ never happen */
382 printf("si%d: Uh, it was supported a second ago...\n", unit);
383 return EINVAL;
384 }
385
386 DELAY(1000000); /* wait around for a second */
387
388 regp = (struct si_reg *)maddr;
389 y = 0;
390 /* wait max of 5 sec for init OK */
391 while (regp->initstat == 0 && y++ < 10) {
392 DELAY(500000);
393 }
394 switch (regp->initstat) {
395 case 0:
396 printf("si%d: startup timeout - aborting\n", unit);
397 sc->sc_type = SIEMPTY;
398 return EINVAL;
399 case 1:
400 if (SI_ISJET(sc->sc_type)) {
401 /* set throttle to 100 times per second */
402 regp->int_count = JET_INT_COUNT;
403 /* rx_intr_count is a NOP in Jet */
404 } else {
405 /* set throttle to 125 times per second */
406 regp->int_count = INT_COUNT;
407 /* rx intr max of 25 times per second */
408 regp->rx_int_count = RXINT_COUNT;
409 }
410 regp->int_pending = 0; /* no intr pending */
411 regp->int_scounter = 0; /* reset counter */
412 break;
413 case 0xff:
414 /*
415 * No modules found, so give up on this one.
416 */
417 printf("si%d: %s - no ports found\n", unit,
418 si_type[sc->sc_type]);
419 return 0;
420 default:
421 printf("si%d: download code version error - initstat %x\n",
422 unit, regp->initstat);
423 return EINVAL;
424 }
425
426 /*
427 * First time around the ports just count them in order
428 * to allocate some memory.
429 */
430 nport = 0;
431 modp = (struct si_module *)(maddr + 0x80);
432 for (;;) {
433 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp));
434 switch (modp->sm_type) {
435 case TA4:
436 DPRINT((0, DBG_DOWNLOAD,
437 "si%d: Found old TA4 module, 4 ports\n",
438 unit));
439 x = 4;
440 break;
441 case TA8:
442 DPRINT((0, DBG_DOWNLOAD,
443 "si%d: Found old TA8 module, 8 ports\n",
444 unit));
445 x = 8;
446 break;
447 case TA4_ASIC:
448 DPRINT((0, DBG_DOWNLOAD,
449 "si%d: Found ASIC TA4 module, 4 ports\n",
450 unit));
451 x = 4;
452 break;
453 case TA8_ASIC:
454 DPRINT((0, DBG_DOWNLOAD,
455 "si%d: Found ASIC TA8 module, 8 ports\n",
456 unit));
457 x = 8;
458 break;
459 case MTA:
460 DPRINT((0, DBG_DOWNLOAD,
461 "si%d: Found CD1400 module, 8 ports\n",
462 unit));
463 x = 8;
464 break;
465 case SXDC:
466 DPRINT((0, DBG_DOWNLOAD,
467 "si%d: Found SXDC module, 8 ports\n",
468 unit));
469 x = 8;
470 break;
471 default:
472 printf("si%d: unknown module type %d\n",
473 unit, modp->sm_type);
474 goto try_next;
475 }
476
477 /* this was limited in firmware and is also a driver issue */
478 if ((nport + x) > SI_MAXPORTPERCARD) {
479 printf("si%d: extra ports ignored\n", unit);
480 goto try_next;
481 }
482
483 nport += x;
484 si_Nports += x;
485 si_Nmodules++;
486
487try_next:
488 if (modp->sm_next == 0)
489 break;
490 modp = (struct si_module *)
491 (maddr + (unsigned)(modp->sm_next & 0x7fff));
492 }
493 sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport,
494 M_DEVBUF, M_NOWAIT | M_ZERO);
495 if (sc->sc_ports == 0) {
496 printf("si%d: fail to malloc memory for port structs\n",
497 unit);
498 return EINVAL;
499 }
500 sc->sc_nport = nport;
501
502 /*
503 * Scan round the ports again, this time initialising.
504 */
505 pp = sc->sc_ports;
506 nmodule = 0;
507 modp = (struct si_module *)(maddr + 0x80);
508 uart_type = 1000; /* arbitary, > uchar_max */
509 for (;;) {
510 switch (modp->sm_type) {
511 case TA4:
512 nport = 4;
513 break;
514 case TA8:
515 nport = 8;
516 break;
517 case TA4_ASIC:
518 nport = 4;
519 break;
520 case TA8_ASIC:
521 nport = 8;
522 break;
523 case MTA:
524 nport = 8;
525 break;
526 case SXDC:
527 nport = 8;
528 break;
529 default:
530 goto try_next2;
531 }
532 nmodule++;
533 ccbp = (struct si_channel *)((char *)modp + 0x100);
534 if (uart_type == 1000)
535 uart_type = ccbp->type;
536 else if (uart_type != ccbp->type)
537 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n",
538 unit, nmodule,
539 ccbp->type, si_modulename(sc->sc_type, ccbp->type),
540 uart_type, si_modulename(sc->sc_type, uart_type));
541
542 for (x = 0; x < nport; x++, pp++, ccbp++) {
543 pp->sp_ccb = ccbp; /* save the address */
544 pp->sp_tty = ttymalloc(NULL);
545 pp->sp_pend = IDLE_CLOSE;
546 pp->sp_state = 0; /* internal flag */
547 pp->sp_dtr_wait = 3 * hz;
548 pp->sp_iin.c_iflag = TTYDEF_IFLAG;
549 pp->sp_iin.c_oflag = TTYDEF_OFLAG;
550 pp->sp_iin.c_cflag = TTYDEF_CFLAG;
551 pp->sp_iin.c_lflag = TTYDEF_LFLAG;
552 termioschars(&pp->sp_iin);
553 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed =
554 TTYDEF_SPEED;;
555 pp->sp_iout = pp->sp_iin;
556 }
557try_next2:
558 if (modp->sm_next == 0) {
559 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n",
560 unit,
561 sc->sc_typename,
562 sc->sc_nport,
563 nmodule,
564 uart_type,
565 si_modulename(sc->sc_type, uart_type));
566 break;
567 }
568 modp = (struct si_module *)
569 (maddr + (unsigned)(modp->sm_next & 0x7fff));
570 }
571 if (done_chartimes == 0) {
572 for (spt = chartimes ; spt->sp_speed != -1; spt++) {
573 if ((spt->sp_code /= hz) == 0)
574 spt->sp_code = 1;
575 }
576 done_chartimes = 1;
577 }
578
579/* path name devsw minor type uid gid perm*/
580 for (x = 0; x < sc->sc_nport; x++) {
581 /* sync with the manuals that start at 1 */
582 y = x + 1 + unit * (1 << SI_CARDSHIFT);
583 make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y);
584 make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y);
585 make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y);
586 make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y);
587 make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y);
588 make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y);
589 }
590 make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control");
591 return (0);
592}
593
594static int
595siopen(dev_t dev, int flag, int mode, struct thread *td)
596{
597 int oldspl, error;
598 int card, port;
599 struct si_softc *sc;
600 struct tty *tp;
601 volatile struct si_channel *ccbp;
602 struct si_port *pp;
603 int mynor = minor(dev);
604
605 /* quickly let in /dev/si_control */
606 if (IS_CONTROLDEV(mynor)) {
607 if ((error = suser(td)))
608 return(error);
609 return(0);
610 }
611
612 card = SI_CARD(mynor);
613 sc = devclass_get_softc(si_devclass, card);
614 if (sc == NULL)
615 return (ENXIO);
616
617 if (sc->sc_type == SIEMPTY) {
618 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n",
619 card, sc->sc_typename));
620 return(ENXIO);
621 }
622
623 port = SI_PORT(mynor);
624 if (port >= sc->sc_nport) {
625 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n",
626 card, sc->sc_nport));
627 return(ENXIO);
628 }
629
630#ifdef POLL
631 /*
632 * We've now got a device, so start the poller.
633 */
634 if (init_finished == 0) {
635 timeout(si_poll, (caddr_t)0L, si_pollrate);
636 init_finished = 1;
637 }
638#endif
639
640 /* initial/lock device */
641 if (IS_STATE(mynor)) {
642 return(0);
643 }
644
645 pp = sc->sc_ports + port;
646 tp = pp->sp_tty; /* the "real" tty */
647 dev->si_tty = tp;
648 ccbp = pp->sp_ccb; /* Find control block */
649 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n",
650 devtoname(dev), flag, mode, td));
651
652 oldspl = spltty(); /* Keep others out */
653 error = 0;
654
655open_top:
656 while (pp->sp_state & SS_DTR_OFF) {
657 error = tsleep(&pp->sp_dtr_wait, TTIPRI|PCATCH, "sidtr", 0);
658 if (error != 0)
659 goto out;
660 }
661
662 if (tp->t_state & TS_ISOPEN) {
663 /*
664 * The device is open, so everything has been initialised.
665 * handle conflicts.
666 */
667 if (IS_CALLOUT(mynor)) {
668 if (!pp->sp_active_out) {
669 error = EBUSY;
670 goto out;
671 }
672 } else {
673 if (pp->sp_active_out) {
674 if (flag & O_NONBLOCK) {
675 error = EBUSY;
676 goto out;
677 }
678 error = tsleep(&pp->sp_active_out,
679 TTIPRI|PCATCH, "sibi", 0);
680 if (error != 0)
681 goto out;
682 goto open_top;
683 }
684 }
685 if (tp->t_state & TS_XCLUDE &&
686 suser(td)) {
687 DPRINT((pp, DBG_OPEN|DBG_FAIL,
688 "already open and EXCLUSIVE set\n"));
689 error = EBUSY;
690 goto out;
691 }
692 } else {
693 /*
694 * The device isn't open, so there are no conflicts.
695 * Initialize it. Avoid sleep... :-)
696 */
697 DPRINT((pp, DBG_OPEN, "first open\n"));
698 tp->t_oproc = si_start;
699 tp->t_stop = si_stop;
700 tp->t_param = siparam;
701 tp->t_dev = dev;
702 tp->t_termios = mynor & SI_CALLOUT_MASK
703 ? pp->sp_iout : pp->sp_iin;
704
705 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
706
707 ++pp->sp_wopeners; /* in case of sleep in siparam */
708
709 error = siparam(tp, &tp->t_termios);
710
711 --pp->sp_wopeners;
712 if (error != 0)
713 goto out;
714 /* XXX: we should goto_top if siparam slept */
715
716 /* set initial DCD state */
717 pp->sp_last_hi_ip = ccbp->hi_ip;
718 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) {
719 (*linesw[tp->t_line].l_modem)(tp, 1);
720 }
721 }
722
723 /* whoops! we beat the close! */
724 if (pp->sp_state & SS_CLOSING) {
725 /* try and stop it from proceeding to bash the hardware */
726 pp->sp_state &= ~SS_CLOSING;
727 }
728
729 /*
730 * Wait for DCD if necessary
731 */
732 if (!(tp->t_state & TS_CARR_ON) &&
733 !IS_CALLOUT(mynor) &&
734 !(tp->t_cflag & CLOCAL) &&
735 !(flag & O_NONBLOCK)) {
736 ++pp->sp_wopeners;
737 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n"));
738 error = tsleep(TSA_CARR_ON(tp), TTIPRI|PCATCH, "sidcd", 0);
739 --pp->sp_wopeners;
740 if (error != 0)
741 goto out;
742 goto open_top;
743 }
744
745 error = (*linesw[tp->t_line].l_open)(dev, tp);
746 si_disc_optim(tp, &tp->t_termios, pp);
747 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor))
748 pp->sp_active_out = TRUE;
749
750 pp->sp_state |= SS_OPEN; /* made it! */
751
752out:
753 splx(oldspl);
754
755 DPRINT((pp, DBG_OPEN, "leaving siopen\n"));
756
757 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0)
758 sihardclose(pp);
759
760 return(error);
761}
762
763static int
764siclose(dev_t dev, int flag, int mode, struct thread *td)
765{
766 struct si_port *pp;
767 struct tty *tp;
768 int oldspl;
769 int error = 0;
770 int mynor = minor(dev);
771
772 if (IS_SPECIAL(mynor))
773 return(0);
774
775 oldspl = spltty();
776
777 pp = MINOR2PP(mynor);
778 tp = pp->sp_tty;
779
780 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n",
781 devtoname(dev), flag, mode, td, pp->sp_state));
782
783 /* did we sleep and loose a race? */
784 if (pp->sp_state & SS_CLOSING) {
785 /* error = ESOMETING? */
786 goto out;
787 }
788
789 /* begin race detection.. */
790 pp->sp_state |= SS_CLOSING;
791
792 si_write_enable(pp, 0); /* block writes for ttywait() */
793
794 /* THIS MAY SLEEP IN TTYWAIT!!! */
795 (*linesw[tp->t_line].l_close)(tp, flag);
796
797 si_write_enable(pp, 1);
798
799 /* did we sleep and somebody started another open? */
800 if (!(pp->sp_state & SS_CLOSING)) {
801 /* error = ESOMETING? */
802 goto out;
803 }
804 /* ok. we are now still on the right track.. nuke the hardware */
805
806 if (pp->sp_state & SS_LSTART) {
807 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch);
808 pp->sp_state &= ~SS_LSTART;
809 }
810
811 si_stop(tp, FREAD | FWRITE);
812
813 sihardclose(pp);
814 ttyclose(tp);
815 pp->sp_state &= ~SS_OPEN;
816
817out:
818 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n"));
819 splx(oldspl);
820 return(error);
821}
822
823static void
824sihardclose(struct si_port *pp)
825{
826 int oldspl;
827 struct tty *tp;
828 volatile struct si_channel *ccbp;
829
830 oldspl = spltty();
831
832 tp = pp->sp_tty;
833 ccbp = pp->sp_ccb; /* Find control block */
834 if (tp->t_cflag & HUPCL ||
835 (!pp->sp_active_out &&
836 !(ccbp->hi_ip & IP_DCD) &&
837 !(pp->sp_iin.c_cflag && CLOCAL)) ||
838 !(tp->t_state & TS_ISOPEN)) {
839
840 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
841 (void) si_command(pp, FCLOSE, SI_NOWAIT);
842
843 if (pp->sp_dtr_wait != 0) {
844 timeout(sidtrwakeup, pp, pp->sp_dtr_wait);
845 pp->sp_state |= SS_DTR_OFF;
846 }
847
848 }
849 pp->sp_active_out = FALSE;
850 wakeup(&pp->sp_active_out);
851 wakeup(TSA_CARR_ON(tp));
852
853 splx(oldspl);
854}
855
856
857/*
858 * called at splsoftclock()...
859 */
860static void
861sidtrwakeup(void *chan)
862{
863 struct si_port *pp;
864 int oldspl;
865
866 oldspl = spltty();
867
868 pp = (struct si_port *)chan;
869 pp->sp_state &= ~SS_DTR_OFF;
870 wakeup(&pp->sp_dtr_wait);
871
872 splx(oldspl);
873}
874
875static int
876siwrite(dev_t dev, struct uio *uio, int flag)
877{
878 struct si_port *pp;
879 struct tty *tp;
880 int error = 0;
881 int mynor = minor(dev);
882 int oldspl;
883
884 if (IS_SPECIAL(mynor)) {
885 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n"));
886 return(ENODEV);
887 }
888 pp = MINOR2PP(mynor);
889 tp = pp->sp_tty;
890 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag));
891
892 oldspl = spltty();
893 /*
894 * If writes are currently blocked, wait on the "real" tty
895 */
896 while (pp->sp_state & SS_BLOCKWRITE) {
897 pp->sp_state |= SS_WAITWRITE;
898 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n"));
899 if ((error = ttysleep(tp, (caddr_t)pp, TTOPRI|PCATCH,
900 "siwrite", tp->t_timeout))) {
901 if (error == EWOULDBLOCK)
902 error = EIO;
903 goto out;
904 }
905 }
906
907 error = (*linesw[tp->t_line].l_write)(tp, uio, flag);
908out:
909 splx(oldspl);
910 return (error);
911}
912
913
914static int
915siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
916{
917 struct si_port *pp;
918 struct tty *tp;
919 int error;
920 int mynor = minor(dev);
921 int oldspl;
922 int blocked = 0;
923#if defined(COMPAT_43)
924 u_long oldcmd;
925 struct termios term;
926#endif
927
928 if (IS_SI_IOCTL(cmd))
929 return(si_Sioctl(dev, cmd, data, flag, td));
930
931 pp = MINOR2PP(mynor);
932 tp = pp->sp_tty;
933
934 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n",
935 devtoname(dev), cmd, data, flag));
936 if (IS_STATE(mynor)) {
937 struct termios *ct;
938
939 switch (mynor & SI_STATE_MASK) {
940 case SI_INIT_STATE_MASK:
941 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin;
942 break;
943 case SI_LOCK_STATE_MASK:
944 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin;
945 break;
946 default:
947 return (ENODEV);
948 }
949 switch (cmd) {
950 case TIOCSETA:
951 error = suser(td);
952 if (error != 0)
953 return (error);
954 *ct = *(struct termios *)data;
955 return (0);
956 case TIOCGETA:
957 *(struct termios *)data = *ct;
958 return (0);
959 case TIOCGETD:
960 *(int *)data = TTYDISC;
961 return (0);
962 case TIOCGWINSZ:
963 bzero(data, sizeof(struct winsize));
964 return (0);
965 default:
966 return (ENOTTY);
967 }
968 }
969 /*
970 * Do the old-style ioctl compat routines...
971 */
972#if defined(COMPAT_43)
973 term = tp->t_termios;
974 oldcmd = cmd;
975 error = ttsetcompat(tp, &cmd, data, &term);
976 if (error != 0)
977 return (error);
978 if (cmd != oldcmd)
979 data = (caddr_t)&term;
980#endif
981 /*
982 * Do the initial / lock state business
983 */
984 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
985 int cc;
986 struct termios *dt = (struct termios *)data;
987 struct termios *lt = mynor & SI_CALLOUT_MASK
988 ? &pp->sp_lout : &pp->sp_lin;
989
990 dt->c_iflag = (tp->t_iflag & lt->c_iflag) |
991 (dt->c_iflag & ~lt->c_iflag);
992 dt->c_oflag = (tp->t_oflag & lt->c_oflag) |
993 (dt->c_oflag & ~lt->c_oflag);
994 dt->c_cflag = (tp->t_cflag & lt->c_cflag) |
995 (dt->c_cflag & ~lt->c_cflag);
996 dt->c_lflag = (tp->t_lflag & lt->c_lflag) |
997 (dt->c_lflag & ~lt->c_lflag);
998 for (cc = 0; cc < NCCS; ++cc)
999 if (lt->c_cc[cc] != 0)
1000 dt->c_cc[cc] = tp->t_cc[cc];
1001 if (lt->c_ispeed != 0)
1002 dt->c_ispeed = tp->t_ispeed;
1003 if (lt->c_ospeed != 0)
1004 dt->c_ospeed = tp->t_ospeed;
1005 }
1006
1007 /*
1008 * Block user-level writes to give the ttywait()
1009 * a chance to completely drain for commands
1010 * that require the port to be in a quiescent state.
1011 */
1012 switch (cmd) {
1013 case TIOCSETAW:
1014 case TIOCSETAF:
1015 case TIOCDRAIN:
1016#ifdef COMPAT_43
1017 case TIOCSETP:
1018#endif
1019 blocked++; /* block writes for ttywait() and siparam() */
1020 si_write_enable(pp, 0);
1021 }
1022
1023 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
1024 if (error != ENOIOCTL)
1025 goto out;
1026
1027 oldspl = spltty();
1028
1029 error = ttioctl(tp, cmd, data, flag);
1030 si_disc_optim(tp, &tp->t_termios, pp);
1031 if (error != ENOIOCTL) {
1032 splx(oldspl);
1033 goto out;
1034 }
1035
1036 error = 0;
1037 switch (cmd) {
1038 case TIOCSBRK:
1039 si_command(pp, SBREAK, SI_WAIT);
1040 break;
1041 case TIOCCBRK:
1042 si_command(pp, EBREAK, SI_WAIT);
1043 break;
1044 case TIOCSDTR:
1045 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1046 break;
1047 case TIOCCDTR:
1048 (void) si_modem(pp, SET, 0);
1049 break;
1050 case TIOCMSET:
1051 (void) si_modem(pp, SET, *(int *)data);
1052 break;
1053 case TIOCMBIS:
1054 (void) si_modem(pp, BIS, *(int *)data);
1055 break;
1056 case TIOCMBIC:
1057 (void) si_modem(pp, BIC, *(int *)data);
1058 break;
1059 case TIOCMGET:
1060 *(int *)data = si_modem(pp, GET, 0);
1061 break;
1062 case TIOCMSDTRWAIT:
1063 /* must be root since the wait applies to following logins */
1064 error = suser(td);
1065 if (error == 0)
1066 pp->sp_dtr_wait = *(int *)data * hz / 100;
1067 break;
1068 case TIOCMGDTRWAIT:
1069 *(int *)data = pp->sp_dtr_wait * 100 / hz;
1070 break;
1071 default:
1072 error = ENOTTY;
1073 }
1074 splx(oldspl);
1075
1076out:
1077 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error));
1078 if (blocked)
1079 si_write_enable(pp, 1);
1080 return(error);
1081}
1082
1083/*
1084 * Handle the Specialix ioctls. All MUST be called via the CONTROL device
1085 */
1086static int
1087si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1088{
1089 struct si_softc *xsc;
1090 struct si_port *xpp;
1091 volatile struct si_reg *regp;
1092 struct si_tcsi *dp;
1093 struct si_pstat *sps;
1094 int *ip, error = 0;
1095 int oldspl;
1096 int card, port;
1097 int mynor = minor(dev);
1098
1099 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n",
1100 devtoname(dev), cmd, data, flag));
1101
1102#if 1
1103 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT));
1104 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB));
1105 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY));
1106#endif
1107
1108 if (!IS_CONTROLDEV(mynor)) {
1109 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n"));
1110 return(ENODEV);
1111 }
1112
1113 oldspl = spltty(); /* better safe than sorry */
1114
1115 ip = (int *)data;
1116
1117#define SUCHECK if ((error = suser(td))) goto out
1118
1119 switch (cmd) {
1120 case TCSIPORTS:
1121 *ip = si_Nports;
1122 goto out;
1123 case TCSIMODULES:
1124 *ip = si_Nmodules;
1125 goto out;
1126 case TCSISDBG_ALL:
1127 SUCHECK;
1128 si_debug = *ip;
1129 goto out;
1130 case TCSIGDBG_ALL:
1131 *ip = si_debug;
1132 goto out;
1133 default:
1134 /*
1135 * Check that a controller for this port exists
1136 */
1137
1138 /* may also be a struct si_pstat, a superset of si_tcsi */
1139
1140 dp = (struct si_tcsi *)data;
1141 sps = (struct si_pstat *)data;
1142 card = dp->tc_card;
1143 xsc = devclass_get_softc(si_devclass, card); /* check.. */
1144 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
1145 error = ENOENT;
1146 goto out;
1147 }
1148 /*
1149 * And check that a port exists
1150 */
1151 port = dp->tc_port;
1152 if (port < 0 || port >= xsc->sc_nport) {
1153 error = ENOENT;
1154 goto out;
1155 }
1156 xpp = xsc->sc_ports + port;
1157 regp = (struct si_reg *)xsc->sc_maddr;
1158 }
1159
1160 switch (cmd) {
1161 case TCSIDEBUG:
1162#ifdef SI_DEBUG
1163 SUCHECK;
1164 if (xpp->sp_debug)
1165 xpp->sp_debug = 0;
1166 else {
1167 xpp->sp_debug = DBG_ALL;
1168 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
1169 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
1170 }
1171 break;
1172#else
1173 error = ENODEV;
1174 goto out;
1175#endif
1176 case TCSISDBG_LEVEL:
1177 case TCSIGDBG_LEVEL:
1178#ifdef SI_DEBUG
1179 if (cmd == TCSIGDBG_LEVEL) {
1180 dp->tc_dbglvl = xpp->sp_debug;
1181 } else {
1182 SUCHECK;
1183 xpp->sp_debug = dp->tc_dbglvl;
1184 }
1185 break;
1186#else
1187 error = ENODEV;
1188 goto out;
1189#endif
1190 case TCSIGRXIT:
1191 dp->tc_int = regp->rx_int_count;
1192 break;
1193 case TCSIRXIT:
1194 SUCHECK;
1195 regp->rx_int_count = dp->tc_int;
1196 break;
1197 case TCSIGIT:
1198 dp->tc_int = regp->int_count;
1199 break;
1200 case TCSIIT:
1201 SUCHECK;
1202 regp->int_count = dp->tc_int;
1203 break;
1204 case TCSISTATE:
1205 dp->tc_int = xpp->sp_ccb->hi_ip;
1206 break;
1207 /* these next three use a different structure */
1208 case TCSI_PORT:
1209 SUCHECK;
1210 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
1211 break;
1212 case TCSI_CCB:
1213 SUCHECK;
1214 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
1215 break;
1216 case TCSI_TTY:
1217 SUCHECK;
1218 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty));
1219 break;
1220 default:
1221 error = EINVAL;
1222 goto out;
1223 }
1224out:
1225 splx(oldspl);
1226 return(error); /* success */
1227}
1228
1229/*
1230 * siparam() : Configure line params
1231 * called at spltty();
1232 * this may sleep, does not flush, nor wait for drain, nor block writes
1233 * caller must arrange this if it's important..
1234 */
1235static int
1236siparam(struct tty *tp, struct termios *t)
1237{
1238 struct si_port *pp = TP2PP(tp);
1239 volatile struct si_channel *ccbp;
1240 int oldspl, cflag, iflag, oflag, lflag;
1241 int error = 0; /* shutup gcc */
1242 int ispeed = 0; /* shutup gcc */
1243 int ospeed = 0; /* shutup gcc */
1244 BYTE val;
1245
1246 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
1247 cflag = t->c_cflag;
1248 iflag = t->c_iflag;
1249 oflag = t->c_oflag;
1250 lflag = t->c_lflag;
1251 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
1252 oflag, cflag, iflag, lflag));
1253
1254 /* XXX - if Jet host and SXDC module, use extended baud rates */
1255
1256 /* if not hung up.. */
1257 if (t->c_ospeed != 0) {
1258 /* translate baud rate to firmware values */
1259 ospeed = ttspeedtab(t->c_ospeed, bdrates);
1260 ispeed = t->c_ispeed ?
1261 ttspeedtab(t->c_ispeed, bdrates) : ospeed;
1262
1263 /* enforce legit baud rate */
1264 if (ospeed < 0 || ispeed < 0)
1265 return (EINVAL);
1266 }
1267
1268 oldspl = spltty();
1269
1270 ccbp = pp->sp_ccb;
1271
1272 /* ========== set hi_break ========== */
1273 val = 0;
1274 if (iflag & IGNBRK) /* Breaks */
1275 val |= BR_IGN;
1276 if (iflag & BRKINT) /* Interrupt on break? */
1277 val |= BR_INT;
1278 if (iflag & PARMRK) /* Parity mark? */
1279 val |= BR_PARMRK;
1280 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
1281 val |= BR_PARIGN;
1282 ccbp->hi_break = val;
1283
1284 /* ========== set hi_csr ========== */
1285 /* if not hung up.. */
1286 if (t->c_ospeed != 0) {
1287 /* Set I/O speeds */
1288 val = (ispeed << 4) | ospeed;
1289 }
1290 ccbp->hi_csr = val;
1291
1292 /* ========== set hi_mr2 ========== */
1293 val = 0;
1294 if (cflag & CSTOPB) /* Stop bits */
1295 val |= MR2_2_STOP;
1296 else
1297 val |= MR2_1_STOP;
1298 /*
1299 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1300 * a DCE, hence the reverse sense of RTS and CTS
1301 */
1302 /* Output Flow - RTS must be raised before data can be sent */
1303 if (cflag & CCTS_OFLOW)
1304 val |= MR2_RTSCONT;
1305
1306 ccbp->hi_mr2 = val;
1307
1308 /* ========== set hi_mr1 ========== */
1309 val = 0;
1310 if (!(cflag & PARENB)) /* Parity */
1311 val |= MR1_NONE;
1312 else
1313 val |= MR1_WITH;
1314 if (cflag & PARODD)
1315 val |= MR1_ODD;
1316
1317 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1318 val |= MR1_8_BITS;
1319 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1320 val |= MR1_7_BITS;
1321 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1322 val |= MR1_6_BITS;
1323 } else { /* Must be 5 */
1324 val |= MR1_5_BITS;
1325 }
1326 /*
1327 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1328 * a DCE, hence the reverse sense of RTS and CTS
1329 */
1330 /* Input Flow - CTS is raised when port is ready to receive data */
1331 if (cflag & CRTS_IFLOW)
1332 val |= MR1_CTSCONT;
1333
1334 ccbp->hi_mr1 = val;
1335
1336 /* ========== set hi_mask ========== */
1337 val = 0xff;
1338 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1339 val &= 0xFF;
1340 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1341 val &= 0x7F;
1342 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1343 val &= 0x3F;
1344 } else { /* Must be 5 */
1345 val &= 0x1F;
1346 }
1347 if (iflag & ISTRIP)
1348 val &= 0x7F;
1349
1350 ccbp->hi_mask = val;
1351
1352 /* ========== set hi_prtcl ========== */
1353 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
1354 if (iflag & IXANY)
1355 val |= SP_TANY;
1356 if (iflag & IXON)
1357 val |= SP_TXEN;
1358 if (iflag & IXOFF)
1359 val |= SP_RXEN;
1360 if (iflag & INPCK)
1361 val |= SP_PAEN;
1362
1363 ccbp->hi_prtcl = val;
1364
1365
1366 /* ========== set hi_{rx|tx}{on|off} ========== */
1367 /* XXX: the card TOTALLY shields us from the flow control... */
1368 ccbp->hi_txon = t->c_cc[VSTART];
1369 ccbp->hi_txoff = t->c_cc[VSTOP];
1370
1371 ccbp->hi_rxon = t->c_cc[VSTART];
1372 ccbp->hi_rxoff = t->c_cc[VSTOP];
1373
1374 /* ========== send settings to the card ========== */
1375 /* potential sleep here */
1376 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */
1377 si_command(pp, LOPEN, SI_WAIT); /* open it */
1378 else
1379 si_command(pp, CONFIG, SI_WAIT); /* change params */
1380
1381 /* ========== set DTR etc ========== */
1382 /* Hangup if ospeed == 0 */
1383 if (t->c_ospeed == 0) {
1384 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
1385 } else {
1386 /*
1387 * If the previous speed was 0, may need to re-enable
1388 * the modem signals
1389 */
1390 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1391 }
1392
1393 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n",
1394 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break));
1395
1396 splx(oldspl);
1397 return(error);
1398}
1399
1400/*
1401 * Enable or Disable the writes to this channel...
1402 * "state" -> enabled = 1; disabled = 0;
1403 */
1404static void
1405si_write_enable(struct si_port *pp, int state)
1406{
1407 int oldspl;
1408
1409 oldspl = spltty();
1410
1411 if (state) {
1412 pp->sp_state &= ~SS_BLOCKWRITE;
1413 if (pp->sp_state & SS_WAITWRITE) {
1414 pp->sp_state &= ~SS_WAITWRITE;
1415 /* thunder away! */
1416 wakeup(pp);
1417 }
1418 } else {
1419 pp->sp_state |= SS_BLOCKWRITE;
1420 }
1421
1422 splx(oldspl);
1423}
1424
1425/*
1426 * Set/Get state of modem control lines.
1427 * Due to DCE-like behaviour of the adapter, some signals need translation:
1428 * TIOCM_DTR DSR
1429 * TIOCM_RTS CTS
1430 */
1431static int
1432si_modem(struct si_port *pp, enum si_mctl cmd, int bits)
1433{
1434 volatile struct si_channel *ccbp;
1435 int x;
1436
1437 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits));
1438 ccbp = pp->sp_ccb; /* Find channel address */
1439 switch (cmd) {
1440 case GET:
1441 x = ccbp->hi_ip;
1442 bits = TIOCM_LE;
1443 if (x & IP_DCD) bits |= TIOCM_CAR;
1444 if (x & IP_DTR) bits |= TIOCM_DTR;
1445 if (x & IP_RTS) bits |= TIOCM_RTS;
1446 if (x & IP_RI) bits |= TIOCM_RI;
1447 return(bits);
1448 case SET:
1449 ccbp->hi_op &= ~(OP_DSR|OP_CTS);
1450 /* fall through */
1451 case BIS:
1452 x = 0;
1453 if (bits & TIOCM_DTR)
1454 x |= OP_DSR;
1455 if (bits & TIOCM_RTS)
1456 x |= OP_CTS;
1457 ccbp->hi_op |= x;
1458 break;
1459 case BIC:
1460 if (bits & TIOCM_DTR)
1461 ccbp->hi_op &= ~OP_DSR;
1462 if (bits & TIOCM_RTS)
1463 ccbp->hi_op &= ~OP_CTS;
1464 }
1465 return 0;
1466}
1467
1468/*
1469 * Handle change of modem state
1470 */
1471static void
1472si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1473{
1474 /* if a modem dev */
1475 if (hi_ip & IP_DCD) {
1476 if (!(pp->sp_last_hi_ip & IP_DCD)) {
1477 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n",
1478 tp->t_line));
1479 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
1480 }
1481 } else {
1482 if (pp->sp_last_hi_ip & IP_DCD) {
1483 DPRINT((pp, DBG_INTR, "modem carr off\n"));
1484 if ((*linesw[tp->t_line].l_modem)(tp, 0))
1485 (void) si_modem(pp, SET, 0);
1486 }
1487 }
1488 pp->sp_last_hi_ip = hi_ip;
1489
1490}
1491
1492/*
1493 * Poller to catch missed interrupts.
1494 *
1495 * Note that the SYSV Specialix drivers poll at 100 times per second to get
1496 * better response. We could really use a "periodic" version timeout(). :-)
1497 */
1498#ifdef POLL
1499static void
1500si_poll(void *nothing)
1501{
1502 struct si_softc *sc;
1503 int i;
1504 volatile struct si_reg *regp;
1505 struct si_port *pp;
1506 int lost, oldspl, port;
1507
1508 DPRINT((0, DBG_POLL, "si_poll()\n"));
1509 oldspl = spltty();
1510 if (in_intr)
1511 goto out;
1512 lost = 0;
1513 for (i = 0; i < si_numunits; i++) {
1514 sc = devclass_get_softc(si_devclass, i);
1515 if (sc == NULL || sc->sc_type == SIEMPTY)
1516 continue;
1517 regp = (struct si_reg *)sc->sc_maddr;
1518
1519 /*
1520 * See if there has been a pending interrupt for 2 seconds
1521 * or so. The test (int_scounter >= 200) won't correspond
1522 * to 2 seconds if int_count gets changed.
1523 */
1524 if (regp->int_pending != 0) {
1525 if (regp->int_scounter >= 200 &&
1526 regp->initstat == 1) {
1527 printf("si%d: lost intr\n", i);
1528 lost++;
1529 }
1530 } else {
1531 regp->int_scounter = 0;
1532 }
1533
1534 /*
1535 * gripe about no input flow control..
1536 */
1537 pp = sc->sc_ports;
1538 for (port = 0; port < sc->sc_nport; pp++, port++) {
1539 if (pp->sp_delta_overflows > 0) {
1540 printf("si%d: %d tty level buffer overflows\n",
1541 i, pp->sp_delta_overflows);
1542 pp->sp_delta_overflows = 0;
1543 }
1544 }
1545 }
1546 if (lost || si_realpoll)
1547 si_intr(NULL); /* call intr with fake vector */
1548out:
1549 splx(oldspl);
1550
1551 timeout(si_poll, (caddr_t)0L, si_pollrate);
1552}
1553#endif /* ifdef POLL */
1554
1555/*
1556 * The interrupt handler polls ALL ports on ALL adapters each time
1557 * it is called.
1558 */
1559
1560static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1561static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1562
1563void
1564si_intr(void *arg)
1565{
1566 struct si_softc *sc;
1567 struct si_port *pp;
1568 volatile struct si_channel *ccbp;
1569 struct tty *tp;
1570 volatile caddr_t maddr;
1571 BYTE op, ip;
1572 int x, card, port, n, i, isopen;
1573 volatile BYTE *z;
1574 BYTE c;
1575
1576 sc = arg;
1577
1578 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1579 if (in_intr)
1580 return;
1581 in_intr = 1;
1582
1583 /*
1584 * When we get an int we poll all the channels and do ALL pending
1585 * work, not just the first one we find. This allows all cards to
1586 * share the same vector.
1587 *
1588 * XXX - But if we're sharing the vector with something that's NOT
1589 * a SI/XIO/SX card, we may be making more work for ourselves.
1590 */
1591 for (card = 0; card < si_numunits; card++) {
1592 sc = devclass_get_softc(si_devclass, card);
1593 if (sc == NULL || sc->sc_type == SIEMPTY)
1594 continue;
1595
1596 /*
1597 * First, clear the interrupt
1598 */
1599 switch(sc->sc_type) {
1600 case SIHOST:
1601 maddr = sc->sc_maddr;
1602 ((volatile struct si_reg *)maddr)->int_pending = 0;
1603 /* flag nothing pending */
1604 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
1605 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
1606 break;
1607 case SIHOST2:
1608 maddr = sc->sc_maddr;
1609 ((volatile struct si_reg *)maddr)->int_pending = 0;
1610 *(maddr+SIPLIRQCLR) = 0x00;
1611 *(maddr+SIPLIRQCLR) = 0x10;
1612 break;
1613 case SIPCI:
1614 maddr = sc->sc_maddr;
1615 ((volatile struct si_reg *)maddr)->int_pending = 0;
1616 *(maddr+SIPCIINTCL) = 0x0;
1617 break;
1618 case SIJETPCI: /* fall through to JETISA case */
1619 case SIJETISA:
1620 maddr = sc->sc_maddr;
1621 ((volatile struct si_reg *)maddr)->int_pending = 0;
1622 *(maddr+SIJETINTCL) = 0x0;
1623 break;
1624 case SIEISA:
1625 maddr = sc->sc_maddr;
1626 ((volatile struct si_reg *)maddr)->int_pending = 0;
1627 (void)inb(sc->sc_iobase + 3);
1628 break;
1629 case SIEMPTY:
1630 default:
1631 continue;
1632 }
1633 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1634
1635 /*
1636 * check each port
1637 */
1638 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1639 pp++, port++) {
1640 ccbp = pp->sp_ccb;
1641 tp = pp->sp_tty;
1642
1643 /*
1644 * See if a command has completed ?
1645 */
1646 if (ccbp->hi_stat != pp->sp_pend) {
1647 DPRINT((pp, DBG_INTR,
1648 "si_intr hi_stat = 0x%x, pend = %d\n",
1649 ccbp->hi_stat, pp->sp_pend));
1650 switch(pp->sp_pend) {
1651 case LOPEN:
1652 case MPEND:
1653 case MOPEN:
1654 case CONFIG:
1655 case SBREAK:
1656 case EBREAK:
1657 pp->sp_pend = ccbp->hi_stat;
1658 /* sleeping in si_command */
1659 wakeup(&pp->sp_state);
1660 break;
1661 default:
1662 pp->sp_pend = ccbp->hi_stat;
1663 }
1664 }
1665
1666 /*
1667 * Continue on if it's closed
1668 */
1669 if (ccbp->hi_stat == IDLE_CLOSE) {
1670 continue;
1671 }
1672
1673 /*
1674 * Do modem state change if not a local device
1675 */
1676 si_modem_state(pp, tp, ccbp->hi_ip);
1677
1678 /*
1679 * Check to see if we should 'receive' characters.
1680 */
1681 if (tp->t_state & TS_CONNECTED &&
1682 tp->t_state & TS_ISOPEN)
1683 isopen = 1;
1684 else
1685 isopen = 0;
1686
1687 /*
1688 * Do input break processing
1689 */
1690 if (ccbp->hi_state & ST_BREAK) {
1691 if (isopen) {
1692 (*linesw[tp->t_line].l_rint)(TTY_BI, tp);
1693 }
1694 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1695 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1696 }
1697
1698 /*
1699 * Do RX stuff - if not open then dump any characters.
1700 * XXX: This is VERY messy and needs to be cleaned up.
1701 *
1702 * XXX: can we leave data in the host adapter buffer
1703 * when the clists are full? That may be dangerous
1704 * if the user cannot get an interrupt signal through.
1705 */
1706
1707 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
1708
1709 if (!isopen) {
1710 ccbp->hi_rxopos = ccbp->hi_rxipos;
1711 goto end_rx;
1712 }
1713
1714 /*
1715 * If the tty input buffers are blocked, stop emptying
1716 * the incoming buffers and let the auto flow control
1717 * assert..
1718 */
1719 if (tp->t_state & TS_TBLOCK) {
1720 goto end_rx;
1721 }
1722
1723 /*
1724 * Process read characters if not skipped above
1725 */
1726 op = ccbp->hi_rxopos;
1727 ip = ccbp->hi_rxipos;
1728 c = ip - op;
1729 if (c == 0) {
1730 goto end_rx;
1731 }
1732
1733 n = c & 0xff;
1734 if (n > 250)
1735 n = 250;
1736
1737 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1738 n, op, ip));
1739
1740 /*
1741 * Suck characters out of host card buffer into the
1742 * "input staging buffer" - so that we dont leave the
1743 * host card in limbo while we're possibly echoing
1744 * characters and possibly flushing input inside the
1745 * ldisc l_rint() routine.
1746 */
1747 if (n <= SI_BUFFERSIZE - op) {
1748
1749 DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
1750 z = ccbp->hi_rxbuf + op;
1751 si_vbcopy(z, si_rxbuf, n);
1752
1753 op += n;
1754 } else {
1755 x = SI_BUFFERSIZE - op;
1756
1757 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
1758 z = ccbp->hi_rxbuf + op;
1759 si_vbcopy(z, si_rxbuf, x);
1760
1761 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
1762 n - x));
1763 z = ccbp->hi_rxbuf;
1764 si_vbcopy(z, si_rxbuf + x, n - x);
1765
1766 op += n;
1767 }
1768
1769 /* clear collected characters from buffer */
1770 ccbp->hi_rxopos = op;
1771
1772 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1773 n, op, ip));
1774
1775 /*
1776 * at this point...
1777 * n = number of chars placed in si_rxbuf
1778 */
1779
1780 /*
1781 * Avoid the grotesquely inefficient lineswitch
1782 * routine (ttyinput) in "raw" mode. It usually
1783 * takes about 450 instructions (that's without
1784 * canonical processing or echo!). slinput is
1785 * reasonably fast (usually 40 instructions
1786 * plus call overhead).
1787 */
1788 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1789
1790 /* block if the driver supports it */
1791 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER &&
1792 (tp->t_cflag & CRTS_IFLOW ||
1793 tp->t_iflag & IXOFF) &&
1794 !(tp->t_state & TS_TBLOCK))
1795 ttyblock(tp);
1796
1797 tk_nin += n;
1798 tk_rawcc += n;
1799 tp->t_rawcc += n;
1800
1801 pp->sp_delta_overflows +=
1802 b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
1803
1804 ttwakeup(tp);
1805 if (tp->t_state & TS_TTSTOP &&
1806 (tp->t_iflag & IXANY ||
1807 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1808 tp->t_state &= ~TS_TTSTOP;
1809 tp->t_lflag &= ~FLUSHO;
1810 si_start(tp);
1811 }
1812 } else {
1813 /*
1814 * It'd be nice to not have to go through the
1815 * function call overhead for each char here.
1816 * It'd be nice to block input it, saving a
1817 * loop here and the call/return overhead.
1818 */
1819 for(x = 0; x < n; x++) {
1820 i = si_rxbuf[x];
1821 if ((*linesw[tp->t_line].l_rint)(i, tp)
1822 == -1) {
1823 pp->sp_delta_overflows++;
1824 }
1825 }
1826 }
1827 goto more_rx; /* try for more until RXbuf is empty */
1828
1829 end_rx: /* XXX: Again, sorry about the gotos.. :-) */
1830
1831 /*
1832 * Do TX stuff
1833 */
1834 (*linesw[tp->t_line].l_start)(tp);
1835
1836 } /* end of for (all ports on this controller) */
1837 } /* end of for (all controllers) */
1838
1839 in_intr = 0;
1840 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1841}
1842
1843/*
1844 * Nudge the transmitter...
1845 *
1846 * XXX: I inherited some funny code here. It implies the host card only
1847 * interrupts when the transmit buffer reaches the low-water-mark, and does
1848 * not interrupt when it's actually hits empty. In some cases, we have
1849 * processes waiting for complete drain, and we need to simulate an interrupt
1850 * about when we think the buffer is going to be empty (and retry if not).
1851 * I really am not certain about this... I *need* the hardware manuals.
1852 */
1853static void
1854si_start(struct tty *tp)
1855{
1856 struct si_port *pp;
1857 volatile struct si_channel *ccbp;
1858 struct clist *qp;
1859 BYTE ipos;
1860 int nchar;
1861 int oldspl, count, n, amount, buffer_full;
1862
1863 oldspl = spltty();
1864
1865 qp = &tp->t_outq;
1866 pp = TP2PP(tp);
1867
1868 DPRINT((pp, DBG_ENTRY|DBG_START,
1869 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n",
1870 tp, tp->t_state, pp->sp_state, qp->c_cc));
1871
1872 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
1873 goto out;
1874
1875 buffer_full = 0;
1876 ccbp = pp->sp_ccb;
1877
1878 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1879 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count));
1880
1881 while ((nchar = qp->c_cc) > 0) {
1882 if ((BYTE)count >= 255) {
1883 buffer_full++;
1884 break;
1885 }
1886 amount = min(nchar, (255 - (BYTE)count));
1887 ipos = (unsigned int)ccbp->hi_txipos;
1888 n = q_to_b(&tp->t_outq, si_txbuf, amount);
1889 /* will it fit in one lump? */
1890 if ((SI_BUFFERSIZE - ipos) >= n) {
1891 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n);
1892 } else {
1893 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos],
1894 SI_BUFFERSIZE - ipos);
1895 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos),
1896 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos));
1897 }
1898 ccbp->hi_txipos += n;
1899 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1900 }
1901
1902 if (count != 0 && nchar == 0) {
1903 tp->t_state |= TS_BUSY;
1904 } else {
1905 tp->t_state &= ~TS_BUSY;
1906 }
1907
1908 /* wakeup time? */
1909 ttwwakeup(tp);
1910
1911 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n",
1912 (BYTE)count, nchar, tp->t_state));
1913
1914 if (tp->t_state & TS_BUSY)
1915 {
1916 int time;
1917
1918 time = ttspeedtab(tp->t_ospeed, chartimes);
1919
1920 if (time > 0) {
1921 if (time < nchar)
1922 time = nchar / time;
1923 else
1924 time = 2;
1925 } else {
1926 DPRINT((pp, DBG_START,
1927 "bad char time value! %d\n", time));
1928 time = hz/10;
1929 }
1930
1931 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) {
1932 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch);
1933 } else {
1934 pp->sp_state |= SS_LSTART;
1935 }
1936 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
1937 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time);
1938 }
1939
1940out:
1941 splx(oldspl);
1942 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1943}
1944
1945/*
1946 * Note: called at splsoftclock from the timeout code
1947 * This has to deal with two things... cause wakeups while waiting for
1948 * tty drains on last process exit, and call l_start at about the right
1949 * time for protocols like ppp.
1950 */
1951static void
1952si_lstart(void *arg)
1953{
1954 struct si_port *pp = arg;
1955 struct tty *tp;
1956 int oldspl;
1957
1958 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
1959 pp, pp->sp_state));
1960
1961 oldspl = spltty();
1962
1963 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) {
1964 splx(oldspl);
1965 return;
1966 }
1967 pp->sp_state &= ~SS_LSTART;
1968 pp->sp_state |= SS_INLSTART;
1969
1970 tp = pp->sp_tty;
1971
1972 /* deal with the process exit case */
1973 ttwwakeup(tp);
1974
1975 /* nudge protocols - eg: ppp */
1976 (*linesw[tp->t_line].l_start)(tp);
1977
1978 pp->sp_state &= ~SS_INLSTART;
1979 splx(oldspl);
1980}
1981
1982/*
1983 * Stop output on a line. called at spltty();
1984 */
1985static void
1986si_stop(struct tty *tp, int rw)
1987{
1988 volatile struct si_channel *ccbp;
1989 struct si_port *pp;
1990
1991 pp = TP2PP(tp);
1992 ccbp = pp->sp_ccb;
1993
1994 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
1995
1996 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
1997 if (rw & FWRITE) {
1998 /* what level are we meant to be flushing anyway? */
1999 if (tp->t_state & TS_BUSY) {
2000 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT);
2001 tp->t_state &= ~TS_BUSY;
2002 ttwwakeup(tp); /* Bruce???? */
2003 }
2004 }
2005#if 1 /* XXX: this doesn't work right yet.. */
2006 /* XXX: this may have been failing because we used to call l_rint()
2007 * while we were looping based on these two counters. Now, we collect
2008 * the data and then loop stuffing it into l_rint(), making this
2009 * useless. Should we cause this to blow away the staging buffer?
2010 */
2011 if (rw & FREAD) {
2012 ccbp->hi_rxopos = ccbp->hi_rxipos;
2013 }
2014#endif
2015}
2016
2017/*
2018 * Issue a command to the host card CPU.
2019 */
2020
2021static void
2022si_command(struct si_port *pp, int cmd, int waitflag)
2023{
2024 int oldspl;
2025 volatile struct si_channel *ccbp = pp->sp_ccb;
2026 int x;
2027
2028 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n",
2029 pp, cmd, waitflag, ccbp->hi_stat));
2030
2031 oldspl = spltty(); /* Keep others out */
2032
2033 /* wait until it's finished what it was doing.. */
2034 /* XXX: sits in IDLE_BREAK until something disturbs it or break
2035 * is turned off. */
2036 while((x = ccbp->hi_stat) != IDLE_OPEN &&
2037 x != IDLE_CLOSE &&
2038 x != IDLE_BREAK &&
2039 x != cmd) {
2040 if (in_intr) { /* Prevent sleep in intr */
2041 DPRINT((pp, DBG_PARAM,
2042 "cmd intr collision - completing %d\trequested %d\n",
2043 x, cmd));
2044 splx(oldspl);
2045 return;
2046 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH,
2047 "sicmd1", 1)) {
2048 splx(oldspl);
2049 return;
2050 }
2051 }
2052 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
2053
2054 /* if there was a pending command, cause a state-change wakeup */
2055 switch(pp->sp_pend) {
2056 case LOPEN:
2057 case MPEND:
2058 case MOPEN:
2059 case CONFIG:
2060 case SBREAK:
2061 case EBREAK:
2062 wakeup(&pp->sp_state);
2063 break;
2064 default:
2065 break;
2066 }
2067
2068 pp->sp_pend = cmd; /* New command pending */
2069 ccbp->hi_stat = cmd; /* Post it */
2070
2071 if (waitflag) {
2072 if (in_intr) { /* If in interrupt handler */
2073 DPRINT((pp, DBG_PARAM,
2074 "attempt to sleep in si_intr - cmd req %d\n",
2075 cmd));
2076 splx(oldspl);
2077 return;
2078 } else while(ccbp->hi_stat != IDLE_OPEN &&
2079 ccbp->hi_stat != IDLE_BREAK) {
2080 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH,
2081 "sicmd2", 0))
2082 break;
2083 }
2084 }
2085 splx(oldspl);
2086}
2087
2088static void
2089si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp)
2090{
2091 /*
2092 * XXX can skip a lot more cases if Smarts. Maybe
2093 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we
2094 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state.
2095 */
2096 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) &&
2097 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) &&
2098 (!(t->c_iflag & PARMRK) ||
2099 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) &&
2100 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) &&
2101 linesw[tp->t_line].l_rint == ttyinput)
2102 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2103 else
2104 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2105 pp->sp_hotchar = linesw[tp->t_line].l_hotchar;
2106 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n",
2107 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off",
2108 pp->sp_hotchar));
2109}
2110
2111
2112#ifdef SI_DEBUG
2113
2114void
2115si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
2116{
2117 va_list ap;
2118
2119 if ((pp == NULL && (si_debug&flags)) ||
2120 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
2121 if (pp != NULL)
2122 printf("%ci%d(%d): ", 's',
2123 (int)SI_CARD(minor(pp->sp_tty->t_dev)),
2124 (int)SI_PORT(minor(pp->sp_tty->t_dev)));
2125 va_start(ap, fmt);
2126 vprintf(fmt, ap);
2127 va_end(ap);
2128 }
2129}
2130
2131static char *
2132si_mctl2str(enum si_mctl cmd)
2133{
2134 switch (cmd) {
2135 case GET:
2136 return("GET");
2137 case SET:
2138 return("SET");
2139 case BIS:
2140 return("BIS");
2141 case BIC:
2142 return("BIC");
2143 }
2144 return("BAD");
2145}
2146
2147#endif /* DEBUG */
2148
2149static char *
2150si_modulename(int host_type, int uart_type)
2151{
2152 switch (host_type) {
2153 /* Z280 based cards */
2154 case SIEISA:
2155 case SIHOST2:
2156 case SIHOST:
2157 case SIPCI:
2158 switch (uart_type) {
2159 case 0:
2160 return(" (XIO)");
2161 case 1:
2162 return(" (SI)");
2163 }
2164 break;
2165 /* T225 based hosts */
2166 case SIJETPCI:
2167 case SIJETISA:
2168 switch (uart_type) {
2169 case 0:
2170 return(" (SI)");
2171 case 40:
2172 return(" (XIO)");
2173 case 72:
2174 return(" (SXDC)");
2175 }
2176 break;
2177 }
2178 return("");
2179}
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