1 /*-
2 * Device driver for Specialix range (SI/XIO) of serial line multiplexors.
3 *
4 * Copyright (C) 1990, 1992, 1998 Specialix International,
5 * Copyright (C) 1993, Andy Rutter <andy@acronym.co.uk>
6 * Copyright (C) 2000, Peter Wemm <peter@netplex.com.au>
7 *
8 * Originally derived from: SunOS 4.x version
9 * Ported from BSDI version to FreeBSD by Peter Wemm.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notices, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notices, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by Andy Rutter of
22 * Advanced Methods and Tools Ltd. based on original information
23 * from Specialix International.
24 * 4. Neither the name of Advanced Methods and Tools, nor Specialix
25 * International may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
30 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
31 * NO EVENT SHALL THE AUTHORS BE LIABLE.
32 *
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 #ifndef lint
39 __IDSTRING(si_copyright1, "@(#) Copyright (C) Specialix International, 1990,1992,1998");
40 __IDSTRING(si_copyright2, "@(#) Copyright (C) Andy Rutter 1993");
41 __IDSTRING(si_copyright3, "@(#) Copyright (C) Peter Wemm 2000");
42 #endif /* not lint */
43
44 #include "opt_compat.h"
45 #include "opt_debug_si.h"
46 #include "opt_eisa.h"
47
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/serial.h>
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/priv.h>
57 #include <sys/sysctl.h>
58 #include <sys/bus.h>
59 #include <machine/bus.h>
60 #include <sys/rman.h>
61 #include <machine/resource.h>
62
63
64 #include <vm/vm.h>
65 #include <vm/pmap.h>
66
67 #include <machine/stdarg.h>
68
69 #include <dev/si/sireg.h>
70 #include <dev/si/sivar.h>
71 #include <dev/si/si.h>
72
73 /*
74 * This device driver is designed to interface the Specialix International
75 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA,
76 * EISA or PCI bus machine.
77 *
78 * The controller is interfaced to the host via dual port RAM
79 * and an interrupt.
80 *
81 * The code for the Host 1 (very old ISA cards) has not been tested.
82 */
83
84 #undef POLL /* turn on poller to scan for lost interrupts */
85 #if 0
86 #define REALPOLL /* on each poll, scan for work regardless */
87 #endif
88 #define POLLHZ (hz/10) /* 10 times per second */
89 #define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE)
90 #define INT_COUNT 25000 /* max of 125 ints per second */
91 #define JET_INT_COUNT 100 /* max of 100 ints per second */
92 #define RXINT_COUNT 1 /* one rxint per 10 milliseconds */
93
94 static void si_command(struct si_port *, int, int);
95 static int si_Sioctl(struct cdev *, u_long, caddr_t, int, struct thread *);
96 /* static void si_stop(struct tty *, int); */
97 #if 0
98 static timeout_t si_lstart;
99 #endif
100
101 static tsw_outwakeup_t si_start;
102 static tsw_ioctl_t siioctl;
103 static tsw_close_t siclose;
104 static tsw_modem_t simodem;
105 static tsw_open_t siopen;
106 static tsw_param_t siparam;
107
108 static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip);
109 static char * si_modulename(int host_type, int uart_type);
110
111 static struct cdevsw si_Scdevsw = {
112 .d_version = D_VERSION,
113 .d_ioctl = si_Sioctl,
114 .d_name = "si",
115 .d_flags = D_TTY | D_NEEDGIANT,
116 };
117
118 static int si_Nports;
119 static int si_Nmodules;
120 static int si_debug;
121
122 SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RWTUN, &si_debug, 0, "");
123
124 static int si_numunits;
125
126 devclass_t si_devclass;
127
128 struct si_speedtab {
129 int sp_speed; /* Speed. */
130 int sp_code; /* Code. */
131 };
132
133 #ifndef B2000 /* not standard, but the hardware knows it. */
134 # define B2000 2000
135 #endif
136 static struct si_speedtab bdrates[] = {
137 { B75, CLK75, }, /* 0x0 */
138 { B110, CLK110, }, /* 0x1 */
139 { B150, CLK150, }, /* 0x3 */
140 { B300, CLK300, }, /* 0x4 */
141 { B600, CLK600, }, /* 0x5 */
142 { B1200, CLK1200, }, /* 0x6 */
143 { B2000, CLK2000, }, /* 0x7 */
144 { B2400, CLK2400, }, /* 0x8 */
145 { B4800, CLK4800, }, /* 0x9 */
146 { B9600, CLK9600, }, /* 0xb */
147 { B19200, CLK19200, }, /* 0xc */
148 { B38400, CLK38400, }, /* 0x2 (out of order!) */
149 { B57600, CLK57600, }, /* 0xd */
150 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */
151 { -1, -1 },
152 };
153
154
155 #ifdef POLL
156 static int si_pollrate; /* in addition to irq */
157 static int si_realpoll = 0; /* poll HW on timer */
158
159 SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, "");
160 SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, "");
161
162 static int init_finished = 0;
163 static void si_poll(void *);
164 #endif
165
166 /*
167 * Array of adapter types and the corresponding RAM size. The order of
168 * entries here MUST match the ordinal of the adapter type.
169 */
170 static const char *si_type[] = {
171 "EMPTY",
172 "SIHOST",
173 "SIMCA", /* FreeBSD does not support Microchannel */
174 "SIHOST2",
175 "SIEISA",
176 "SIPCI",
177 "SXPCI",
178 "SXISA",
179 };
180
181 #ifdef SI_DEBUG
182 static char *
si_cmdname(int cmd)183 si_cmdname(int cmd)
184 {
185 static char buf[32];
186
187 switch (cmd) {
188 case IDLE_OPEN: return("IDLE_OPEN");
189 case LOPEN: return("LOPEN");
190 case MOPEN: return("MOPEN");
191 case MPEND: return("MPEND");
192 case CONFIG: return("CONFIG");
193 case CLOSE: return("CLOSE");
194 case SBREAK: return("SBREAK");
195 case EBREAK: return("EBREAK");
196 case IDLE_CLOSE: return("IDLE_CLOSE");
197 case IDLE_BREAK: return("IDLE_BREAK");
198 case FCLOSE: return("FCLOSE");
199 case RESUME: return("RESUME");
200 case WFLUSH: return("WFLUSH");
201 case RFLUSH: return("RFLUSH");
202 default:
203 sprintf(buf, "?cmd:0x%x?", cmd);
204 return (buf);
205 }
206 }
207 #endif
208
209 /*
210 * We have to make an 8 bit version of bcopy, since some cards can't
211 * deal with 32 bit I/O
212 */
213 static void __inline
si_bcopy(const void * src,void * dst,size_t len)214 si_bcopy(const void *src, void *dst, size_t len)
215 {
216 u_char *d;
217 const u_char *s;
218
219 d = dst;
220 s = src;
221 while (len--)
222 *d++ = *s++;
223 }
224 static void __inline
si_vbcopy(const volatile void * src,void * dst,size_t len)225 si_vbcopy(const volatile void *src, void *dst, size_t len)
226 {
227 u_char *d;
228 const volatile u_char *s;
229
230 d = dst;
231 s = src;
232 while (len--)
233 *d++ = *s++;
234 }
235 static void __inline
si_bcopyv(const void * src,volatile void * dst,size_t len)236 si_bcopyv(const void *src, volatile void *dst, size_t len)
237 {
238 volatile u_char *d;
239 const u_char *s;
240
241 d = dst;
242 s = src;
243 while (len--)
244 *d++ = *s++;
245 }
246
247 static int
si_speedtab(int speed,struct si_speedtab * table)248 si_speedtab(int speed, struct si_speedtab *table)
249 {
250 for ( ; table->sp_speed != -1; table++)
251 if (table->sp_speed == speed)
252 return (table->sp_code);
253 return (-1);
254 }
255
256
257 static struct ttydevsw si_tty_class = {
258 .tsw_flags = TF_INITLOCK|TF_CALLOUT,
259 .tsw_open = siopen,
260 .tsw_close = siclose,
261 .tsw_outwakeup = si_start,
262 /* .tsw_stop = si_stop */
263 .tsw_ioctl = siioctl,
264 .tsw_param = siparam,
265 .tsw_modem = simodem,
266 };
267
268
269 /*
270 * Attach the device. Initialize the card.
271 */
272 int
siattach(device_t dev)273 siattach(device_t dev)
274 {
275 int unit;
276 struct si_softc *sc;
277 struct si_port *pp;
278 struct tty *tp;
279 volatile struct si_channel *ccbp;
280 volatile struct si_reg *regp;
281 volatile caddr_t maddr;
282 struct si_module *modp;
283 int nmodule, nport, x, y;
284 int uart_type;
285
286 sc = device_get_softc(dev);
287 unit = device_get_unit(dev);
288
289 sc->sc_typename = si_type[sc->sc_type];
290 if (si_numunits < unit + 1)
291 si_numunits = unit + 1;
292
293 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit));
294
295 #ifdef POLL
296 if (si_pollrate == 0) {
297 si_pollrate = POLLHZ; /* in addition to irq */
298 #ifdef REALPOLL
299 si_realpoll = 1; /* scan always */
300 #endif
301 }
302 #endif
303
304 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit,
305 sc->sc_typename, sc->sc_paddr, sc->sc_maddr));
306
307 sc->sc_ports = NULL; /* mark as uninitialised */
308
309 maddr = sc->sc_maddr;
310
311 /* Stop the CPU first so it won't stomp around while we load */
312
313 switch (sc->sc_type) {
314 #ifdef DEV_EISA
315 case SIEISA:
316 outb(sc->sc_iobase + 2, sc->sc_irq << 4);
317 #endif
318 break;
319 case SIPCI:
320 *(maddr+SIPCIRESET) = 0;
321 break;
322 case SIJETPCI: /* fall through to JET ISA */
323 case SIJETISA:
324 *(maddr+SIJETCONFIG) = 0;
325 break;
326 case SIHOST2:
327 *(maddr+SIPLRESET) = 0;
328 break;
329 case SIHOST:
330 *(maddr+SIRESET) = 0;
331 break;
332 default: /* this should never happen */
333 printf("si%d: unsupported configuration\n", unit);
334 return EINVAL;
335 break;
336 }
337
338 /* OK, now lets download the download code */
339
340 if (SI_ISJET(sc->sc_type)) {
341 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n",
342 unit, si3_t225_dsize));
343 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr,
344 si3_t225_dsize);
345 DPRINT((0, DBG_DOWNLOAD,
346 "si%d: jet_bootstrap: nbytes %d -> %x\n",
347 unit, si3_t225_bsize, si3_t225_bootloadaddr));
348 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr,
349 si3_t225_bsize);
350 } else {
351 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n",
352 unit, si2_z280_dsize));
353 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr,
354 si2_z280_dsize);
355 }
356
357 /* Now start the CPU */
358
359 switch (sc->sc_type) {
360 #ifdef DEV_EISA
361 case SIEISA:
362 /* modify the download code to tell it that it's on an EISA */
363 *(maddr + 0x42) = 1;
364 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4);
365 (void)inb(sc->sc_iobase + 3); /* reset interrupt */
366 break;
367 #endif
368 case SIPCI:
369 /* modify the download code to tell it that it's on a PCI */
370 *(maddr+0x42) = 1;
371 *(maddr+SIPCIRESET) = 1;
372 *(maddr+SIPCIINTCL) = 0;
373 break;
374 case SIJETPCI:
375 *(maddr+SIJETRESET) = 0;
376 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN;
377 break;
378 case SIJETISA:
379 *(maddr+SIJETRESET) = 0;
380 switch (sc->sc_irq) {
381 case 9:
382 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90;
383 break;
384 case 10:
385 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0;
386 break;
387 case 11:
388 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0;
389 break;
390 case 12:
391 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0;
392 break;
393 case 15:
394 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0;
395 break;
396 }
397 break;
398 case SIHOST:
399 *(maddr+SIRESET_CL) = 0;
400 *(maddr+SIINTCL_CL) = 0;
401 break;
402 case SIHOST2:
403 *(maddr+SIPLRESET) = 0x10;
404 switch (sc->sc_irq) {
405 case 11:
406 *(maddr+SIPLIRQ11) = 0x10;
407 break;
408 case 12:
409 *(maddr+SIPLIRQ12) = 0x10;
410 break;
411 case 15:
412 *(maddr+SIPLIRQ15) = 0x10;
413 break;
414 }
415 *(maddr+SIPLIRQCLR) = 0x10;
416 break;
417 default: /* this should _REALLY_ never happen */
418 printf("si%d: Uh, it was supported a second ago...\n", unit);
419 return EINVAL;
420 }
421
422 DELAY(1000000); /* wait around for a second */
423
424 regp = (struct si_reg *)maddr;
425 y = 0;
426 /* wait max of 5 sec for init OK */
427 while (regp->initstat == 0 && y++ < 10) {
428 DELAY(500000);
429 }
430 switch (regp->initstat) {
431 case 0:
432 printf("si%d: startup timeout - aborting\n", unit);
433 sc->sc_type = SIEMPTY;
434 return EINVAL;
435 case 1:
436 if (SI_ISJET(sc->sc_type)) {
437 /* set throttle to 100 times per second */
438 regp->int_count = JET_INT_COUNT;
439 /* rx_intr_count is a NOP in Jet */
440 } else {
441 /* set throttle to 125 times per second */
442 regp->int_count = INT_COUNT;
443 /* rx intr max of 25 times per second */
444 regp->rx_int_count = RXINT_COUNT;
445 }
446 regp->int_pending = 0; /* no intr pending */
447 regp->int_scounter = 0; /* reset counter */
448 break;
449 case 0xff:
450 /*
451 * No modules found, so give up on this one.
452 */
453 printf("si%d: %s - no ports found\n", unit,
454 si_type[sc->sc_type]);
455 return 0;
456 default:
457 printf("si%d: download code version error - initstat %x\n",
458 unit, regp->initstat);
459 return EINVAL;
460 }
461
462 /*
463 * First time around the ports just count them in order
464 * to allocate some memory.
465 */
466 nport = 0;
467 modp = (struct si_module *)(maddr + 0x80);
468 for (;;) {
469 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp));
470 switch (modp->sm_type) {
471 case TA4:
472 DPRINT((0, DBG_DOWNLOAD,
473 "si%d: Found old TA4 module, 4 ports\n",
474 unit));
475 x = 4;
476 break;
477 case TA8:
478 DPRINT((0, DBG_DOWNLOAD,
479 "si%d: Found old TA8 module, 8 ports\n",
480 unit));
481 x = 8;
482 break;
483 case TA4_ASIC:
484 DPRINT((0, DBG_DOWNLOAD,
485 "si%d: Found ASIC TA4 module, 4 ports\n",
486 unit));
487 x = 4;
488 break;
489 case TA8_ASIC:
490 DPRINT((0, DBG_DOWNLOAD,
491 "si%d: Found ASIC TA8 module, 8 ports\n",
492 unit));
493 x = 8;
494 break;
495 case MTA:
496 DPRINT((0, DBG_DOWNLOAD,
497 "si%d: Found CD1400 module, 8 ports\n",
498 unit));
499 x = 8;
500 break;
501 case SXDC:
502 DPRINT((0, DBG_DOWNLOAD,
503 "si%d: Found SXDC module, 8 ports\n",
504 unit));
505 x = 8;
506 break;
507 default:
508 printf("si%d: unknown module type %d\n",
509 unit, modp->sm_type);
510 goto try_next;
511 }
512
513 /* this was limited in firmware and is also a driver issue */
514 if ((nport + x) > SI_MAXPORTPERCARD) {
515 printf("si%d: extra ports ignored\n", unit);
516 goto try_next;
517 }
518
519 nport += x;
520 si_Nports += x;
521 si_Nmodules++;
522
523 try_next:
524 if (modp->sm_next == 0)
525 break;
526 modp = (struct si_module *)
527 (maddr + (unsigned)(modp->sm_next & 0x7fff));
528 }
529 sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport,
530 M_DEVBUF, M_NOWAIT | M_ZERO);
531 if (sc->sc_ports == 0) {
532 printf("si%d: fail to malloc memory for port structs\n",
533 unit);
534 return EINVAL;
535 }
536 sc->sc_nport = nport;
537
538 /*
539 * Scan round the ports again, this time initialising.
540 */
541 pp = sc->sc_ports;
542 nmodule = 0;
543 modp = (struct si_module *)(maddr + 0x80);
544 uart_type = 1000; /* arbitary, > uchar_max */
545 for (;;) {
546 switch (modp->sm_type) {
547 case TA4:
548 nport = 4;
549 break;
550 case TA8:
551 nport = 8;
552 break;
553 case TA4_ASIC:
554 nport = 4;
555 break;
556 case TA8_ASIC:
557 nport = 8;
558 break;
559 case MTA:
560 nport = 8;
561 break;
562 case SXDC:
563 nport = 8;
564 break;
565 default:
566 goto try_next2;
567 }
568 nmodule++;
569 ccbp = (struct si_channel *)((char *)modp + 0x100);
570 if (uart_type == 1000)
571 uart_type = ccbp->type;
572 else if (uart_type != ccbp->type)
573 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n",
574 unit, nmodule,
575 ccbp->type, si_modulename(sc->sc_type, ccbp->type),
576 uart_type, si_modulename(sc->sc_type, uart_type));
577
578 for (x = 0; x < nport; x++, pp++, ccbp++) {
579 pp->sp_ccb = ccbp; /* save the address */
580 pp->sp_pend = IDLE_CLOSE;
581 pp->sp_state = 0; /* internal flag */
582 #ifdef SI_DEBUG
583 sprintf(pp->sp_name, "si%r%r", unit,
584 (int)(pp - sc->sc_ports));
585 #endif
586 tp = pp->sp_tty = tty_alloc_mutex(&si_tty_class, pp, &Giant);
587 tty_makedev(tp, NULL, "A%r%r", unit, (int)(pp - sc->sc_ports));
588 }
589 try_next2:
590 if (modp->sm_next == 0) {
591 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n",
592 unit,
593 sc->sc_typename,
594 sc->sc_nport,
595 nmodule,
596 uart_type,
597 si_modulename(sc->sc_type, uart_type));
598 break;
599 }
600 modp = (struct si_module *)
601 (maddr + (unsigned)(modp->sm_next & 0x7fff));
602 }
603
604 if (unit == 0)
605 make_dev(&si_Scdevsw, 0, UID_ROOT, GID_WHEEL, 0600,
606 "si_control");
607 return (0);
608 }
609
610 static int
siopen(struct tty * tp)611 siopen(struct tty *tp)
612 {
613
614 DPRINT((0, DBG_ENTRY|DBG_OPEN, "siopen()\n"));
615 mtx_assert(&Giant, MA_OWNED);
616 #ifdef POLL
617 /*
618 * We've now got a device, so start the poller.
619 */
620 if (init_finished == 0) {
621 timeout(si_poll, (caddr_t)0L, si_pollrate);
622 init_finished = 1;
623 }
624 #endif
625 DPRINT((0, DBG_EXIT|DBG_OPEN, "siopen() finished\n"));
626 return(0);
627 }
628
629 static void
siclose(struct tty * tp)630 siclose(struct tty *tp)
631 {
632 struct si_port *pp;
633
634 DPRINT((0, DBG_ENTRY|DBG_CLOSE, "siclose()\n"));
635 mtx_assert(&Giant, MA_OWNED);
636 pp = tty_softc(tp);
637 (void) si_command(pp, FCLOSE, SI_WAIT);
638 DPRINT((0, DBG_EXIT|DBG_CLOSE, "siclose() finished\n"));
639 }
640
641 static int
siioctl(struct tty * tp,u_long cmd,caddr_t data,struct thread * td)642 siioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
643 {
644 struct si_port *pp;
645
646 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "siioctl(0x%lx,0x%x)\n", cmd, data));
647 mtx_assert(&Giant, MA_OWNED);
648 pp = tty_softc(tp);
649 switch (cmd) {
650 case TIOCSBRK:
651 si_command(pp, SBREAK, SI_WAIT);
652 return (0);
653 case TIOCCBRK:
654 si_command(pp, EBREAK, SI_WAIT);
655 return (0);
656 }
657 return (ENOIOCTL); /* Let the common tty ioctl handler do it */
658 }
659
660 /*
661 * Handle the Specialix ioctls on the control dev.
662 */
663 static int
si_Sioctl(struct cdev * dev,u_long cmd,caddr_t data,int flag,struct thread * td)664 si_Sioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
665 {
666 struct si_softc *xsc;
667 struct si_port *xpp;
668 volatile struct si_reg *regp;
669 struct si_tcsi *dp;
670 struct si_pstat *sps;
671 int *ip, error = 0;
672 int oldspl;
673 int card, port;
674
675 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,0x%lx,0x%x)\n",
676 devtoname(dev), cmd, data));
677 mtx_assert(&Giant, MA_OWNED);
678
679 #if 1
680 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT));
681 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB));
682 #endif
683
684 oldspl = spltty(); /* better safe than sorry */
685
686 ip = (int *)data;
687
688 #define SUCHECK if ((error = priv_check(td, PRIV_DRIVER))) goto out
689
690 switch (cmd) {
691 case TCSIPORTS:
692 *ip = si_Nports;
693 goto out;
694 case TCSIMODULES:
695 *ip = si_Nmodules;
696 goto out;
697 case TCSISDBG_ALL:
698 SUCHECK;
699 si_debug = *ip;
700 goto out;
701 case TCSIGDBG_ALL:
702 *ip = si_debug;
703 goto out;
704 default:
705 /*
706 * Check that a controller for this port exists
707 */
708
709 /* may also be a struct si_pstat, a superset of si_tcsi */
710
711 dp = (struct si_tcsi *)data;
712 sps = (struct si_pstat *)data;
713 card = dp->tc_card;
714 xsc = devclass_get_softc(si_devclass, card); /* check.. */
715 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
716 error = ENOENT;
717 goto out;
718 }
719 /*
720 * And check that a port exists
721 */
722 port = dp->tc_port;
723 if (port < 0 || port >= xsc->sc_nport) {
724 error = ENOENT;
725 goto out;
726 }
727 xpp = xsc->sc_ports + port;
728 regp = (struct si_reg *)xsc->sc_maddr;
729 }
730
731 switch (cmd) {
732 case TCSIDEBUG:
733 #ifdef SI_DEBUG
734 SUCHECK;
735 if (xpp->sp_debug)
736 xpp->sp_debug = 0;
737 else {
738 xpp->sp_debug = DBG_ALL;
739 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
740 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
741 }
742 break;
743 #else
744 error = ENODEV;
745 goto out;
746 #endif
747 case TCSISDBG_LEVEL:
748 case TCSIGDBG_LEVEL:
749 #ifdef SI_DEBUG
750 if (cmd == TCSIGDBG_LEVEL) {
751 dp->tc_dbglvl = xpp->sp_debug;
752 } else {
753 SUCHECK;
754 xpp->sp_debug = dp->tc_dbglvl;
755 }
756 break;
757 #else
758 error = ENODEV;
759 goto out;
760 #endif
761 case TCSIGRXIT:
762 dp->tc_int = regp->rx_int_count;
763 break;
764 case TCSIRXIT:
765 SUCHECK;
766 regp->rx_int_count = dp->tc_int;
767 break;
768 case TCSIGIT:
769 dp->tc_int = regp->int_count;
770 break;
771 case TCSIIT:
772 SUCHECK;
773 regp->int_count = dp->tc_int;
774 break;
775 case TCSISTATE:
776 dp->tc_int = xpp->sp_ccb->hi_ip;
777 break;
778 /* these next three use a different structure */
779 case TCSI_PORT:
780 SUCHECK;
781 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
782 break;
783 case TCSI_CCB:
784 SUCHECK;
785 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
786 break;
787 default:
788 error = EINVAL;
789 goto out;
790 }
791 out:
792 splx(oldspl);
793 return(error); /* success */
794 }
795
796 /*
797 * siparam() : Configure line params
798 * called at spltty();
799 * this may sleep, does not flush, nor wait for drain, nor block writes
800 * caller must arrange this if it's important..
801 */
802 static int
siparam(struct tty * tp,struct termios * t)803 siparam(struct tty *tp, struct termios *t)
804 {
805 struct si_port *pp = tty_softc(tp);
806 volatile struct si_channel *ccbp;
807 int oldspl, cflag, iflag, oflag, lflag;
808 int error = 0; /* shutup gcc */
809 int ispeed = 0; /* shutup gcc */
810 int ospeed = 0; /* shutup gcc */
811 BYTE val;
812
813 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
814 mtx_assert(&Giant, MA_OWNED);
815 cflag = t->c_cflag;
816 iflag = t->c_iflag;
817 oflag = t->c_oflag;
818 lflag = t->c_lflag;
819 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
820 oflag, cflag, iflag, lflag));
821
822 /* XXX - if Jet host and SXDC module, use extended baud rates */
823
824 /* if not hung up.. */
825 if (t->c_ospeed != 0) {
826 /* translate baud rate to firmware values */
827 ospeed = si_speedtab(t->c_ospeed, bdrates);
828 ispeed = t->c_ispeed ?
829 si_speedtab(t->c_ispeed, bdrates) : ospeed;
830 /* enforce legit baud rate */
831 if (ospeed < 0 || ispeed < 0)
832 return (EINVAL);
833 }
834
835 oldspl = spltty();
836
837 ccbp = pp->sp_ccb;
838
839 /* ========== set hi_break ========== */
840 val = 0;
841 if (iflag & IGNBRK) /* Breaks */
842 val |= BR_IGN;
843 if (iflag & BRKINT) /* Interrupt on break? */
844 val |= BR_INT;
845 if (iflag & PARMRK) /* Parity mark? */
846 val |= BR_PARMRK;
847 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
848 val |= BR_PARIGN;
849 ccbp->hi_break = val;
850
851 /* ========== set hi_csr ========== */
852 /* if not hung up.. */
853 if (t->c_ospeed != 0) {
854 /* Set I/O speeds */
855 val = (ispeed << 4) | ospeed;
856 }
857 ccbp->hi_csr = val;
858
859 /* ========== set hi_mr2 ========== */
860 val = 0;
861 if (cflag & CSTOPB) /* Stop bits */
862 val |= MR2_2_STOP;
863 else
864 val |= MR2_1_STOP;
865
866 /*
867 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
868 * a DCE, hence the reverse sense of RTS and CTS
869 */
870 /* Output Flow - RTS must be raised before data can be sent */
871 if (cflag & CCTS_OFLOW)
872 val |= MR2_RTSCONT;
873
874 ccbp->hi_mr2 = val;
875
876 /* ========== set hi_mr1 ========== */
877 val = 0;
878 if (!(cflag & PARENB)) /* Parity */
879 val |= MR1_NONE;
880 else
881 val |= MR1_WITH;
882 if (cflag & PARODD)
883 val |= MR1_ODD;
884
885 if ((cflag & CS8) == CS8) /* 8 data bits? */
886 val |= MR1_8_BITS;
887 else if ((cflag & CS7) == CS7) /* 7 data bits? */
888 val |= MR1_7_BITS;
889 else if ((cflag & CS6) == CS6) /* 6 data bits? */
890 val |= MR1_6_BITS;
891 else /* Must be 5 */
892 val |= MR1_5_BITS;
893
894 /*
895 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
896 * a DCE, hence the reverse sense of RTS and CTS
897 */
898 /* Input Flow - CTS is raised when port is ready to receive data */
899 if (cflag & CRTS_IFLOW)
900 val |= MR1_CTSCONT;
901
902 ccbp->hi_mr1 = val;
903
904 /* ========== set hi_mask ========== */
905 val = 0xff;
906 if ((cflag & CS8) == CS8) { /* 8 data bits? */
907 val &= 0xFF;
908 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
909 val &= 0x7F;
910 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
911 val &= 0x3F;
912 } else { /* Must be 5 */
913 val &= 0x1F;
914 }
915 if (iflag & ISTRIP)
916 val &= 0x7F;
917
918 ccbp->hi_mask = val;
919
920 /* ========== set hi_prtcl ========== */
921 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
922 if (iflag & IXANY)
923 val |= SP_TANY;
924 if (iflag & IXON)
925 val |= SP_TXEN;
926 if (iflag & IXOFF)
927 val |= SP_RXEN;
928 if (iflag & INPCK)
929 val |= SP_PAEN;
930
931 ccbp->hi_prtcl = val;
932
933
934 /* ========== set hi_{rx|tx}{on|off} ========== */
935 /* XXX: the card TOTALLY shields us from the flow control... */
936 ccbp->hi_txon = t->c_cc[VSTART];
937 ccbp->hi_txoff = t->c_cc[VSTOP];
938
939 ccbp->hi_rxon = t->c_cc[VSTART];
940 ccbp->hi_rxoff = t->c_cc[VSTOP];
941
942 /* ========== send settings to the card ========== */
943 /* potential sleep here */
944 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */
945 si_command(pp, LOPEN, SI_WAIT); /* open it */
946 else
947 si_command(pp, CONFIG, SI_WAIT); /* change params */
948
949 /* ========== set DTR etc ========== */
950 /* Hangup if ospeed == 0 */
951 if (t->c_ospeed == 0) {
952 (void) simodem(tp, 0, SER_DTR | SER_RTS);
953 } else {
954 /*
955 * If the previous speed was 0, may need to re-enable
956 * the modem signals
957 */
958 (void) simodem(tp, SER_DTR | SER_RTS, 0);
959 }
960
961 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x HI_CSR %x\n",
962 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break, ccbp->hi_csr));
963
964 splx(oldspl);
965 return(error);
966 }
967
968 /*
969 * Set/Get state of modem control lines.
970 * Due to DCE-like behaviour of the adapter, some signals need translation:
971 * TIOCM_DTR DSR
972 * TIOCM_RTS CTS
973 */
974 static int
simodem(struct tty * tp,int sigon,int sigoff)975 simodem(struct tty *tp, int sigon, int sigoff)
976 {
977 struct si_port *pp;
978 volatile struct si_channel *ccbp;
979 int x;
980
981 pp = tty_softc(tp);
982 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "simodem(%x,%x)\n", sigon, sigoff));
983 mtx_assert(&Giant, MA_OWNED);
984 ccbp = pp->sp_ccb; /* Find channel address */
985 if (sigon == 0 && sigoff == 0) {
986 x = ccbp->hi_ip;
987 /*
988 * XXX: not sure this is correct, should it be CTS&DSR ?
989 * XXX: or do we (just) miss CTS & DSR ?
990 */
991 if (x & IP_DCD) sigon |= SER_DCD;
992 if (x & IP_DTR) sigon |= SER_DTR;
993 if (x & IP_RTS) sigon |= SER_RTS;
994 if (x & IP_RI) sigon |= SER_RI;
995 return (sigon);
996 }
997
998 x = ccbp->hi_op;
999 if (sigon & SER_DTR)
1000 x |= OP_DSR;
1001 if (sigoff & SER_DTR)
1002 x &= ~OP_DSR;
1003 if (sigon & SER_RTS)
1004 x |= OP_CTS;
1005 if (sigoff & SER_RTS)
1006 x &= ~OP_CTS;
1007 ccbp->hi_op = x;
1008 return 0;
1009 }
1010
1011 /*
1012 * Handle change of modem state
1013 */
1014 static void
si_modem_state(struct si_port * pp,struct tty * tp,int hi_ip)1015 si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1016 {
1017 /* if a modem dev */
1018 mtx_assert(&Giant, MA_OWNED);
1019 if (hi_ip & IP_DCD) {
1020 if (!(pp->sp_last_hi_ip & IP_DCD)) {
1021 DPRINT((pp, DBG_INTR, "modem carr on%d\n"));
1022 (void)ttydisc_modem(tp, 1);
1023 }
1024 } else {
1025 if (pp->sp_last_hi_ip & IP_DCD) {
1026 DPRINT((pp, DBG_INTR, "modem carr off\n"));
1027 #if 0 /* XXX mpsafetty ttyld_modem used to tell us to shutdown the port or not */
1028 if (ttydisc_modem(tp, 0))
1029 (void) simodem(tp, 0, SER_DTR | SER_RTS);
1030 #else
1031 ttydisc_modem(tp, 0);
1032 #endif
1033 }
1034 }
1035 pp->sp_last_hi_ip = hi_ip;
1036
1037 }
1038
1039 /*
1040 * Poller to catch missed interrupts.
1041 *
1042 * Note that the SYSV Specialix drivers poll at 100 times per second to get
1043 * better response. We could really use a "periodic" version timeout(). :-)
1044 */
1045 #ifdef POLL
1046 static void
si_poll(void * nothing)1047 si_poll(void *nothing)
1048 {
1049 struct si_softc *sc;
1050 int i;
1051 volatile struct si_reg *regp;
1052 struct si_port *pp;
1053 int lost, oldspl, port;
1054
1055 DPRINT((0, DBG_POLL, "si_poll()\n"));
1056 oldspl = spltty();
1057 mtx_assert(&Giant, MA_OWNED);
1058 lost = 0;
1059 for (i = 0; i < si_numunits; i++) {
1060 sc = devclass_get_softc(si_devclass, i);
1061 if (sc == NULL || sc->sc_type == SIEMPTY)
1062 continue;
1063 regp = (struct si_reg *)sc->sc_maddr;
1064
1065 /*
1066 * See if there has been a pending interrupt for 2 seconds
1067 * or so. The test (int_scounter >= 200) won't correspond
1068 * to 2 seconds if int_count gets changed.
1069 */
1070 if (regp->int_pending != 0) {
1071 if (regp->int_scounter >= 200 &&
1072 regp->initstat == 1) {
1073 printf("si%d: lost intr\n", i);
1074 lost++;
1075 }
1076 } else {
1077 regp->int_scounter = 0;
1078 }
1079
1080 /*
1081 * gripe about no input flow control..
1082 */
1083 pp = sc->sc_ports;
1084 for (port = 0; port < sc->sc_nport; pp++, port++) {
1085 if (pp->sp_delta_overflows > 0) {
1086 printf("si%d: %d tty level buffer overflows\n",
1087 i, pp->sp_delta_overflows);
1088 pp->sp_delta_overflows = 0;
1089 }
1090 }
1091 }
1092 if (lost || si_realpoll)
1093 si_intr(NULL); /* call intr with fake vector */
1094 splx(oldspl);
1095
1096 timeout(si_poll, (caddr_t)0L, si_pollrate);
1097 }
1098 #endif /* ifdef POLL */
1099
1100 /*
1101 * The interrupt handler polls ALL ports on ALL adapters each time
1102 * it is called.
1103 */
1104
1105 static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1106 static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1107
1108 void
si_intr(void * arg)1109 si_intr(void *arg)
1110 {
1111 struct si_softc *sc;
1112 struct si_port *pp;
1113 volatile struct si_channel *ccbp;
1114 struct tty *tp;
1115 volatile caddr_t maddr;
1116 BYTE op, ip;
1117 int x, card, port, n, i, isopen;
1118 volatile BYTE *z;
1119 BYTE c;
1120
1121 sc = arg;
1122 mtx_assert(&Giant, MA_OWNED);
1123
1124 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1125
1126 /*
1127 * When we get an int we poll all the channels and do ALL pending
1128 * work, not just the first one we find. This allows all cards to
1129 * share the same vector.
1130 *
1131 * XXX - But if we're sharing the vector with something that's NOT
1132 * a SI/XIO/SX card, we may be making more work for ourselves.
1133 */
1134 for (card = 0; card < si_numunits; card++) {
1135 sc = devclass_get_softc(si_devclass, card);
1136 if (sc == NULL || sc->sc_type == SIEMPTY)
1137 continue;
1138
1139 /*
1140 * First, clear the interrupt
1141 */
1142 switch(sc->sc_type) {
1143 case SIHOST:
1144 maddr = sc->sc_maddr;
1145 ((volatile struct si_reg *)maddr)->int_pending = 0;
1146 /* flag nothing pending */
1147 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
1148 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
1149 break;
1150 case SIHOST2:
1151 maddr = sc->sc_maddr;
1152 ((volatile struct si_reg *)maddr)->int_pending = 0;
1153 *(maddr+SIPLIRQCLR) = 0x00;
1154 *(maddr+SIPLIRQCLR) = 0x10;
1155 break;
1156 case SIPCI:
1157 maddr = sc->sc_maddr;
1158 ((volatile struct si_reg *)maddr)->int_pending = 0;
1159 *(maddr+SIPCIINTCL) = 0x0;
1160 break;
1161 case SIJETPCI: /* fall through to JETISA case */
1162 case SIJETISA:
1163 maddr = sc->sc_maddr;
1164 ((volatile struct si_reg *)maddr)->int_pending = 0;
1165 *(maddr+SIJETINTCL) = 0x0;
1166 break;
1167 #ifdef DEV_EISA
1168 case SIEISA:
1169 maddr = sc->sc_maddr;
1170 ((volatile struct si_reg *)maddr)->int_pending = 0;
1171 (void)inb(sc->sc_iobase + 3);
1172 break;
1173 #endif
1174 case SIEMPTY:
1175 default:
1176 continue;
1177 }
1178 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1179
1180 /*
1181 * check each port
1182 */
1183 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1184 pp++, port++) {
1185 ccbp = pp->sp_ccb;
1186 tp = pp->sp_tty;
1187 tty_lock(tp);
1188
1189 /*
1190 * See if a command has completed ?
1191 */
1192 if (ccbp->hi_stat != pp->sp_pend) {
1193 DPRINT((pp, DBG_INTR,
1194 "si_intr hi_stat = %s, pend = %s\n",
1195 si_cmdname(ccbp->hi_stat),
1196 si_cmdname(pp->sp_pend)));
1197 switch(pp->sp_pend) {
1198 case LOPEN:
1199 case MPEND:
1200 case MOPEN:
1201 case FCLOSE:
1202 case CONFIG:
1203 case SBREAK:
1204 case EBREAK:
1205 /* sleeping in si_command */
1206 DPRINT((pp, DBG_INTR, "do wakeup\n"));
1207 wakeup(&pp->sp_state);
1208 break;
1209 }
1210 pp->sp_pend = ccbp->hi_stat;
1211 }
1212
1213 /*
1214 * Continue on if it's closed
1215 */
1216 if (ccbp->hi_stat == IDLE_CLOSE) {
1217 tty_unlock(tp);
1218 continue;
1219 }
1220
1221 /*
1222 * Do modem state change if not a local device
1223 */
1224 si_modem_state(pp, tp, ccbp->hi_ip);
1225
1226 /*
1227 * Check to see if we should 'receive' characters.
1228 */
1229 isopen = tty_opened(tp);
1230
1231 /*
1232 * Do input break processing
1233 */
1234 if (ccbp->hi_state & ST_BREAK) {
1235 if (isopen)
1236 ttydisc_rint(tp, 0, TRE_BREAK);
1237 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1238 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1239 }
1240
1241 /*
1242 * Do RX stuff - if not open then dump any characters.
1243 * XXX: This is VERY messy and needs to be cleaned up.
1244 *
1245 * XXX: can we leave data in the host adapter buffer
1246 * when the clists are full? That may be dangerous
1247 * if the user cannot get an interrupt signal through.
1248 */
1249
1250 more_rx:
1251
1252 if (!isopen) {
1253 DPRINT((pp, DBG_INTR, "intr1: not open\n"));
1254 ccbp->hi_rxopos = ccbp->hi_rxipos;
1255 goto end_rx;
1256 }
1257
1258 #if 0 /* XXXMPSAFETTY */
1259 /*
1260 * If the tty input buffers are blocked, stop emptying
1261 * the incoming buffers and let the auto flow control
1262 * assert..
1263 */
1264 if (tp->t_state & TS_TBLOCK)
1265 goto end_rx;
1266 #endif
1267
1268 /*
1269 * Process read characters if not skipped above
1270 */
1271 op = ccbp->hi_rxopos;
1272 ip = ccbp->hi_rxipos;
1273 c = ip - op;
1274 if (c == 0)
1275 goto end_rx;
1276
1277 n = c & 0xff;
1278 if (n > 250)
1279 n = 250;
1280
1281 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1282 n, op, ip));
1283
1284 /*
1285 * Suck characters out of host card buffer into the
1286 * "input staging buffer" - so that we dont leave the
1287 * host card in limbo while we're possibly echoing
1288 * characters and possibly flushing input inside the
1289 * ldisc l_rint() routine.
1290 */
1291 if (n <= SI_BUFFERSIZE - op) {
1292
1293 z = ccbp->hi_rxbuf + op;
1294 si_vbcopy(z, si_rxbuf, n);
1295
1296 op += n;
1297 } else {
1298 x = SI_BUFFERSIZE - op;
1299
1300 z = ccbp->hi_rxbuf + op;
1301 si_vbcopy(z, si_rxbuf, x);
1302
1303 z = ccbp->hi_rxbuf;
1304 si_vbcopy(z, si_rxbuf + x, n - x);
1305
1306 op += n;
1307 }
1308
1309 /* clear collected characters from buffer */
1310 ccbp->hi_rxopos = op;
1311
1312 /*
1313 * at this point...
1314 * n = number of chars placed in si_rxbuf
1315 */
1316
1317 if (0 && ttydisc_can_bypass(tp)) {
1318
1319 i = ttydisc_rint_bypass(tp, (char *)si_rxbuf, n);
1320 if (i < n)
1321 pp->sp_delta_overflows += (n - i);
1322
1323 } else {
1324 /*
1325 * It'd be nice to not have to go through the
1326 * function call overhead for each char here.
1327 * It'd be nice to block input it, saving a
1328 * loop here and the call/return overhead.
1329 */
1330 for(x = 0; x < n; x++) {
1331 i = si_rxbuf[x];
1332 if (ttydisc_rint(tp, i, 0) == -1)
1333 pp->sp_delta_overflows++;
1334 }
1335 }
1336 goto more_rx; /* try for more until RXbuf is empty */
1337
1338 end_rx:
1339
1340 ttydisc_rint_done(tp);
1341
1342 /*
1343 * Do TX stuff
1344 */
1345 si_start(tp);
1346 tty_unlock(tp);
1347
1348 } /* end of for (all ports on this controller) */
1349 } /* end of for (all controllers) */
1350
1351 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1352 }
1353
1354 /*
1355 * Nudge the transmitter...
1356 *
1357 * XXX: I inherited some funny code here. It implies the host card only
1358 * interrupts when the transmit buffer reaches the low-water-mark, and does
1359 * not interrupt when it's actually hits empty. In some cases, we have
1360 * processes waiting for complete drain, and we need to simulate an interrupt
1361 * about when we think the buffer is going to be empty (and retry if not).
1362 * I really am not certain about this... I *need* the hardware manuals.
1363 */
1364 static void
si_start(struct tty * tp)1365 si_start(struct tty *tp)
1366 {
1367 struct si_port *pp;
1368 volatile struct si_channel *ccbp;
1369 BYTE ipos, count;
1370 #if 0
1371 int nchar;
1372 #endif
1373 int oldspl, n, amount;
1374
1375 oldspl = spltty();
1376 mtx_assert(&Giant, MA_OWNED);
1377
1378 pp = tty_softc(tp);
1379
1380 DPRINT((pp, DBG_ENTRY|DBG_START,
1381 "si_start(%x) sp_state %x\n",
1382 tp, pp->sp_state));
1383
1384 ccbp = pp->sp_ccb;
1385
1386 while ((count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos) < 255) {
1387 DPRINT((pp, DBG_START, "txbuf pend count %d\n", (BYTE)count));
1388 ipos = (unsigned int)ccbp->hi_txipos;
1389 if ((int)ccbp->hi_txopos <= ipos)
1390 amount = SI_BUFFERSIZE - ipos;
1391 else
1392 amount = 255 - count;
1393 DPRINT((pp, DBG_START, "spaceleft amount %d\n", amount));
1394 if (amount == 0)
1395 break;
1396 n = ttydisc_getc(tp, si_txbuf, amount);
1397 DPRINT((pp, DBG_START, "getc n=%d\n", n));
1398 if (n == 0)
1399 break;
1400 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n);
1401 ccbp->hi_txipos += n;
1402 }
1403
1404 #if 0
1405 /*
1406 * See if there are any characters still to come. If so, we can
1407 * depend on si_start being called again.
1408 *
1409 * XXX the manual is vague on this. It implies we get an interrupt
1410 * when the transmit queue reaches the 25% low water mark, but NOT
1411 * when it hits empty.
1412 */
1413 nchar = ttyoutq_getsize(&tp->t_outq) - ttyoutq_bytesleft(&tp->t_outq);
1414 DPRINT((pp, DBG_START, "count %d, nchar %d\n",
1415 (BYTE)count, nchar));
1416
1417 if (count != 0 && nchar == 0) {
1418 int time;
1419
1420 /* XXX lame. Ticks per character. used to be a table. */
1421 time = (tp->t_termios.c_ospeed + 9) / 10;
1422
1423 if (time > 0) {
1424 if (time < nchar)
1425 time = nchar / time;
1426 else
1427 time = 2;
1428 } else {
1429 DPRINT((pp, DBG_START,
1430 "bad char time value! %d\n", time));
1431 time = hz/10;
1432 }
1433
1434 if ((pp->sp_state & SS_LSTART) != 0)
1435 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch);
1436 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
1437 pp->sp_state |= SS_LSTART;
1438 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time);
1439 }
1440 #endif
1441
1442 splx(oldspl);
1443 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1444 }
1445
1446 #if 0
1447 /*
1448 * This has to deal with two things... cause wakeups while waiting for
1449 * tty drains on last process exit, and call l_start at about the right
1450 * time for protocols like ppp.
1451 */
1452 static void
1453 si_lstart(void *arg)
1454 {
1455 struct si_port *pp = arg;
1456 struct tty *tp;
1457 int oldspl;
1458
1459 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
1460 pp, pp->sp_state));
1461
1462 oldspl = spltty();
1463 mtx_assert(&Giant, MA_OWNED);
1464 pp->sp_state &= ~SS_LSTART;
1465 tp = pp->sp_tty;
1466
1467 si_start(tp);
1468
1469 splx(oldspl);
1470 }
1471 #endif
1472
1473 #if 0 /* XXX mpsafetty */
1474 /*
1475 * Stop output on a line. called at spltty();
1476 */
1477 static void
1478 si_stop(struct tty *tp, int rw)
1479 {
1480 volatile struct si_channel *ccbp;
1481 struct si_port *pp;
1482
1483 mtx_assert(&Giant, MA_OWNED);
1484 pp = tty_softc(tp);
1485 ccbp = pp->sp_ccb;
1486
1487 DPRINT((pp, DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
1488
1489 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
1490 if (rw & FWRITE) {
1491 /* what level are we meant to be flushing anyway? */
1492 if (tp->t_state & TS_BUSY) {
1493 si_command(pp, WFLUSH, SI_NOWAIT);
1494 tp->t_state &= ~TS_BUSY;
1495 ttwwakeup(tp); /* Bruce???? */
1496 }
1497 }
1498 #if 1 /* XXX: this doesn't work right yet.. */
1499 /* XXX: this may have been failing because we used to call l_rint()
1500 * while we were looping based on these two counters. Now, we collect
1501 * the data and then loop stuffing it into l_rint(), making this
1502 * useless. Should we cause this to blow away the staging buffer?
1503 */
1504 if (rw & FREAD) {
1505 ccbp->hi_rxopos = ccbp->hi_rxipos;
1506 }
1507 #endif
1508 }
1509 #endif
1510
1511 /*
1512 * Issue a command to the host card CPU.
1513 *
1514 * XXX This is all just so WRONG!. Ed says we're not supposed to sleep
1515 * here anyway. We sort of get away with it for now by using Giant.
1516 * Something better will have to be done.
1517 * Linux does a busy spin here waiting for the 8-bit cpu to notice the
1518 * posted command and respond to it. I'm not sure I like that either.
1519 */
1520 static void
si_command(struct si_port * pp,int cmd,int waitflag)1521 si_command(struct si_port *pp, int cmd, int waitflag)
1522 {
1523 int oldspl;
1524 volatile struct si_channel *ccbp = pp->sp_ccb;
1525 int x;
1526 int err;
1527
1528 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%s,%d): hi_stat %s, sp_pend: %s\n",
1529 pp, si_cmdname(cmd), waitflag, si_cmdname(ccbp->hi_stat),
1530 si_cmdname(pp->sp_pend)));
1531
1532 oldspl = spltty(); /* Keep others out */
1533 mtx_assert(&Giant, MA_OWNED);
1534
1535 /* wait until it's finished what it was doing.. */
1536 /* XXX: sits in IDLE_BREAK until something disturbs it or break
1537 * is turned off. */
1538 while((x = ccbp->hi_stat) != IDLE_OPEN &&
1539 x != IDLE_CLOSE &&
1540 x != IDLE_BREAK &&
1541 x != cmd) {
1542 DPRINT((pp, DBG_PARAM, "sicmd1 old cmd pending (going to tsleep): hi_stat (%s)\n", si_cmdname(ccbp->hi_stat)));
1543 err = tsleep(&pp->sp_state, (PSOCK+1)|PCATCH, "sicmd1", hz/4);
1544 if (err) {
1545 DPRINT((pp, DBG_PARAM, "sicmd1 timeout: hi_stat (%s)\n",
1546 si_cmdname(ccbp->hi_stat)));
1547 /* This is very very bad. The card has crashed. */
1548 /* XXX the driver breaks at this point */
1549 if (err == ETIMEDOUT)
1550 DPRINT(("%s: tsleep1 timeout. hi_stat %s, sp_pend %s\n", pp->sp_name, si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend)));
1551 splx(oldspl);
1552 return;
1553 }
1554 }
1555 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
1556 DPRINT((pp, DBG_PARAM, "sicmd1 now in: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend)));
1557
1558 /* if there was a pending command, cause a state-change wakeup */
1559 switch(pp->sp_pend) {
1560 case LOPEN:
1561 case MPEND:
1562 case MOPEN:
1563 case FCLOSE:
1564 case CONFIG:
1565 case SBREAK:
1566 case EBREAK:
1567 DPRINT((pp, DBG_PARAM, "si_command: sp_pend %s, doing wakeup\n", si_cmdname(pp->sp_pend)));
1568 wakeup(&pp->sp_state);
1569 break;
1570 default:
1571 break;
1572 }
1573
1574 pp->sp_pend = cmd; /* New command pending */
1575 ccbp->hi_stat = cmd; /* Post it */
1576 DPRINT((pp, DBG_PARAM, "sicmd now posted: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend)));
1577
1578 if (waitflag) {
1579 while((x = ccbp->hi_stat) != IDLE_OPEN &&
1580 x != IDLE_CLOSE &&
1581 x != IDLE_BREAK) {
1582 DPRINT((pp, DBG_PARAM, "sicmd2 now waiting: hi_stat (%s) sp_pend (%s) (going to tsleep)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend)));
1583 err = tsleep(&pp->sp_state, (PSOCK+1)|PCATCH, "sicmd2", hz);
1584 if (err) {
1585 DPRINT((pp, DBG_PARAM, "sicmd2 tsleep error: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend)));
1586 if (err == ETIMEDOUT) {
1587 DPRINT(("%s: tsleep2 timeout. hi_stat %s, sp_pend %s\n", pp->sp_name, si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend)));
1588 }
1589 break;
1590 }
1591 }
1592 }
1593 DPRINT((pp, DBG_PARAM, "sicmd2 finished: hi_stat (%s) sp_pend (%s)\n", si_cmdname(ccbp->hi_stat), si_cmdname(pp->sp_pend)));
1594 splx(oldspl);
1595 }
1596
1597
1598 #ifdef SI_DEBUG
1599
1600 void
si_dprintf(struct si_port * pp,int flags,const char * fmt,...)1601 si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
1602 {
1603 va_list ap;
1604
1605 if ((pp == NULL && (si_debug&flags)) ||
1606 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
1607 if (pp != NULL)
1608 printf("%s: ", pp->sp_name);
1609 va_start(ap, fmt);
1610 vprintf(fmt, ap);
1611 va_end(ap);
1612 }
1613 }
1614
1615 #endif /* DEBUG */
1616
1617 static char *
si_modulename(int host_type,int uart_type)1618 si_modulename(int host_type, int uart_type)
1619 {
1620 switch (host_type) {
1621 /* Z280 based cards */
1622 #ifdef DEV_EISA
1623 case SIEISA:
1624 #endif
1625 case SIHOST2:
1626 case SIHOST:
1627 case SIPCI:
1628 switch (uart_type) {
1629 case 0:
1630 return(" (XIO)");
1631 case 1:
1632 return(" (SI)");
1633 }
1634 break;
1635 /* T225 based hosts */
1636 case SIJETPCI:
1637 case SIJETISA:
1638 switch (uart_type) {
1639 case 0:
1640 return(" (SI)");
1641 case 40:
1642 return(" (XIO)");
1643 case 72:
1644 return(" (SXDC)");
1645 }
1646 break;
1647 }
1648 return("");
1649 }
1650