Don't cast lvavalues.
[dragonfly.git] / sys / dev / serial / si / si.c
CommitLineData
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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 * $FreeBSD: src/sys/dev/si/si.c,v 1.101.2.1 2001/02/26 04:23:06 jlemon Exp $
7e2c1a6b 34 * $DragonFly: src/sys/dev/serial/si/si.c,v 1.14 2005/02/06 23:26:43 joerg Exp $
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35 */
36
37#ifndef lint
38static const char si_copyright1[] = "@(#) Copyright (C) Specialix International, 1990,1992,1998",
39 si_copyright2[] = "@(#) Copyright (C) Andy Rutter 1993",
40 si_copyright3[] = "@(#) Copyright (C) Peter Wemm 2000";
41#endif /* not lint */
42
43#include "opt_compat.h"
44#include "opt_debug_si.h"
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/proc.h>
53#include <sys/conf.h>
54#include <sys/fcntl.h>
55#include <sys/dkstat.h>
56#include <sys/kernel.h>
57#include <sys/malloc.h>
58#include <sys/sysctl.h>
59#include <sys/bus.h>
60#include <machine/bus.h>
61#include <sys/rman.h>
62#include <machine/resource.h>
63
64#include <machine/clock.h>
65
66#include <vm/vm.h>
67#include <vm/pmap.h>
68
69#include <machine/stdarg.h>
70
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71#include "sireg.h"
72#include "sivar.h"
73#include "si.h"
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74
75/*
76 * This device driver is designed to interface the Specialix International
77 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA,
78 * EISA or PCI bus machine.
79 *
80 * The controller is interfaced to the host via dual port RAM
81 * and an interrupt.
82 *
83 * The code for the Host 1 (very old ISA cards) has not been tested.
84 */
85
86#define POLL /* turn on poller to scan for lost interrupts */
87#define REALPOLL /* on each poll, scan for work regardless */
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
94enum si_mctl { GET, SET, BIS, BIC };
95
96static void si_command(struct si_port *, int, int);
97static int si_modem(struct si_port *, enum si_mctl, int);
98static void si_write_enable(struct si_port *, int);
dadab5e9 99static int si_Sioctl(dev_t, u_long, caddr_t, int, struct thread *);
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100static void si_start(struct tty *);
101static void si_stop(struct tty *, int);
102static timeout_t si_lstart;
103static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp);
104static void sihardclose(struct si_port *pp);
105static void sidtrwakeup(void *chan);
106
107#ifdef SI_DEBUG
108static char *si_mctl2str(enum si_mctl cmd);
109#endif
110
111static int siparam(struct tty *, struct termios *);
112
113static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip);
114static char * si_modulename(int host_type, int uart_type);
115
116static d_open_t siopen;
117static d_close_t siclose;
118static d_write_t siwrite;
119static d_ioctl_t siioctl;
120
121#define CDEV_MAJOR 68
122static struct cdevsw si_cdevsw = {
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123 /* name */ "si",
124 /* maj */ CDEV_MAJOR,
125 /* flags */ D_TTY | D_KQFILTER,
126 /* port */ NULL,
455fcd7e 127 /* clone */ NULL,
fabb8ceb 128
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129 /* open */ siopen,
130 /* close */ siclose,
131 /* read */ ttyread,
132 /* write */ siwrite,
133 /* ioctl */ siioctl,
134 /* poll */ ttypoll,
135 /* mmap */ nommap,
136 /* strategy */ nostrategy,
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137 /* dump */ nodump,
138 /* psize */ nopsize,
fabb8ceb 139 /* kqfilter */ ttykqfilter
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140};
141
142static int si_Nports;
143static int si_Nmodules;
144static int si_debug = 0; /* data, not bss, so it's patchable */
145
146SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, "");
147
148static struct tty *si__tty;
149
150static int si_numunits;
9a5ed89e 151static struct callout poll_ch;
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152
153devclass_t si_devclass;
154
155#ifndef B2000 /* not standard, but the hardware knows it. */
156# define B2000 2000
157#endif
158static struct speedtab bdrates[] = {
159 { B75, CLK75, }, /* 0x0 */
160 { B110, CLK110, }, /* 0x1 */
161 { B150, CLK150, }, /* 0x3 */
162 { B300, CLK300, }, /* 0x4 */
163 { B600, CLK600, }, /* 0x5 */
164 { B1200, CLK1200, }, /* 0x6 */
165 { B2000, CLK2000, }, /* 0x7 */
166 { B2400, CLK2400, }, /* 0x8 */
167 { B4800, CLK4800, }, /* 0x9 */
168 { B9600, CLK9600, }, /* 0xb */
169 { B19200, CLK19200, }, /* 0xc */
170 { B38400, CLK38400, }, /* 0x2 (out of order!) */
171 { B57600, CLK57600, }, /* 0xd */
172 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */
173 { -1, -1 },
174};
175
176
177/* populated with approx character/sec rates - translated at card
178 * initialisation time to chars per tick of the clock */
179static int done_chartimes = 0;
180static struct speedtab chartimes[] = {
181 { B75, 8, },
182 { B110, 11, },
183 { B150, 15, },
184 { B300, 30, },
185 { B600, 60, },
186 { B1200, 120, },
187 { B2000, 200, },
188 { B2400, 240, },
189 { B4800, 480, },
190 { B9600, 960, },
191 { B19200, 1920, },
192 { B38400, 3840, },
193 { B57600, 5760, },
194 { B115200, 11520, },
195 { -1, -1 },
196};
197static volatile int in_intr = 0; /* Inside interrupt handler? */
198
199#ifdef POLL
200static int si_pollrate; /* in addition to irq */
201static int si_realpoll = 0; /* poll HW on timer */
202
203SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, "");
204SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, "");
205
206static int init_finished = 0;
207static void si_poll(void *);
208#endif
209
210/*
211 * Array of adapter types and the corresponding RAM size. The order of
212 * entries here MUST match the ordinal of the adapter type.
213 */
214static char *si_type[] = {
215 "EMPTY",
216 "SIHOST",
217 "SIMCA", /* FreeBSD does not support Microchannel */
218 "SIHOST2",
219 "SIEISA",
220 "SIPCI",
221 "SXPCI",
222 "SXISA",
223};
224
225/*
226 * We have to make an 8 bit version of bcopy, since some cards can't
227 * deal with 32 bit I/O
228 */
229static void __inline
230si_bcopy(const void *src, void *dst, size_t len)
231{
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232 const uint8_t *src_byte = (const uint8_t *)src;
233 uint8_t *dst_byte = (uint8_t *)dst;
234
984263bc 235 while (len--)
7e2c1a6b 236 *dst_byte++ = *src_byte++;
984263bc 237}
7e2c1a6b 238
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239static void __inline
240si_vbcopy(const volatile void *src, void *dst, size_t len)
241{
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242 volatile const uint8_t *src_byte = (volatile const uint8_t *)src;
243 uint8_t *dst_byte = (uint8_t *)dst;
244
984263bc 245 while (len--)
7e2c1a6b 246 *dst_byte++ = *src_byte++;
984263bc 247}
7e2c1a6b 248
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249static void __inline
250si_bcopyv(const void *src, volatile void *dst, size_t len)
251{
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252 const uint8_t *src_byte = (const uint8_t *)src;
253 volatile uint8_t *dst_byte = (volatile uint8_t *)dst;
254
984263bc 255 while (len--)
7e2c1a6b 256 *dst_byte++ = *src_byte++;
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257}
258
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259/*
260 * Attach the device. Initialize the card.
261 */
262int
263siattach(device_t dev)
264{
265 int unit;
266 struct si_softc *sc;
267 struct si_port *pp;
268 volatile struct si_channel *ccbp;
269 volatile struct si_reg *regp;
270 volatile caddr_t maddr;
271 struct si_module *modp;
272 struct tty *tp;
273 struct speedtab *spt;
274 int nmodule, nport, x, y;
275 int uart_type;
54607efb 276 int n;
984263bc 277
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278 if ((poll_ch.c_flags & CALLOUT_DID_INIT) == 0)
279 callout_init(&poll_ch);
280
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281 sc = device_get_softc(dev);
282 unit = device_get_unit(dev);
283
284 sc->sc_typename = si_type[sc->sc_type];
285 if (si_numunits < unit + 1)
286 si_numunits = unit + 1;
287
288 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit));
289
290#ifdef POLL
291 if (si_pollrate == 0) {
292 si_pollrate = POLLHZ; /* in addition to irq */
293#ifdef REALPOLL
294 si_realpoll = 1; /* scan always */
295#endif
296 }
297#endif
298
299 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit,
300 sc->sc_typename, sc->sc_paddr, sc->sc_maddr));
301
302 sc->sc_ports = NULL; /* mark as uninitialised */
303
304 maddr = sc->sc_maddr;
305
306 /* Stop the CPU first so it won't stomp around while we load */
307
308 switch (sc->sc_type) {
309 case SIEISA:
310 outb(sc->sc_iobase + 2, sc->sc_irq << 4);
311 break;
312 case SIPCI:
313 *(maddr+SIPCIRESET) = 0;
314 break;
315 case SIJETPCI: /* fall through to JET ISA */
316 case SIJETISA:
317 *(maddr+SIJETCONFIG) = 0;
318 break;
319 case SIHOST2:
320 *(maddr+SIPLRESET) = 0;
321 break;
322 case SIHOST:
323 *(maddr+SIRESET) = 0;
324 break;
325 default: /* this should never happen */
326 printf("si%d: unsupported configuration\n", unit);
327 return EINVAL;
328 break;
329 }
330
331 /* OK, now lets download the download code */
332
333 if (SI_ISJET(sc->sc_type)) {
334 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n",
335 unit, si3_t225_dsize));
336 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr,
337 si3_t225_dsize);
338 DPRINT((0, DBG_DOWNLOAD,
339 "si%d: jet_bootstrap: nbytes %d -> %x\n",
340 unit, si3_t225_bsize, si3_t225_bootloadaddr));
341 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr,
342 si3_t225_bsize);
343 } else {
344 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n",
345 unit, si2_z280_dsize));
346 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr,
347 si2_z280_dsize);
348 }
349
350 /* Now start the CPU */
351
352 switch (sc->sc_type) {
353 case SIEISA:
354 /* modify the download code to tell it that it's on an EISA */
355 *(maddr + 0x42) = 1;
356 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4);
357 (void)inb(sc->sc_iobase + 3); /* reset interrupt */
358 break;
359 case SIPCI:
360 /* modify the download code to tell it that it's on a PCI */
361 *(maddr+0x42) = 1;
362 *(maddr+SIPCIRESET) = 1;
363 *(maddr+SIPCIINTCL) = 0;
364 break;
365 case SIJETPCI:
366 *(maddr+SIJETRESET) = 0;
367 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN;
368 break;
369 case SIJETISA:
370 *(maddr+SIJETRESET) = 0;
371 switch (sc->sc_irq) {
372 case 9:
373 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90;
374 break;
375 case 10:
376 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0;
377 break;
378 case 11:
379 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0;
380 break;
381 case 12:
382 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0;
383 break;
384 case 15:
385 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0;
386 break;
387 }
388 break;
389 case SIHOST:
390 *(maddr+SIRESET_CL) = 0;
391 *(maddr+SIINTCL_CL) = 0;
392 break;
393 case SIHOST2:
394 *(maddr+SIPLRESET) = 0x10;
395 switch (sc->sc_irq) {
396 case 11:
397 *(maddr+SIPLIRQ11) = 0x10;
398 break;
399 case 12:
400 *(maddr+SIPLIRQ12) = 0x10;
401 break;
402 case 15:
403 *(maddr+SIPLIRQ15) = 0x10;
404 break;
405 }
406 *(maddr+SIPLIRQCLR) = 0x10;
407 break;
408 default: /* this should _REALLY_ never happen */
409 printf("si%d: Uh, it was supported a second ago...\n", unit);
410 return EINVAL;
411 }
412
413 DELAY(1000000); /* wait around for a second */
414
415 regp = (struct si_reg *)maddr;
416 y = 0;
417 /* wait max of 5 sec for init OK */
418 while (regp->initstat == 0 && y++ < 10) {
419 DELAY(500000);
420 }
421 switch (regp->initstat) {
422 case 0:
423 printf("si%d: startup timeout - aborting\n", unit);
424 sc->sc_type = SIEMPTY;
425 return EINVAL;
426 case 1:
427 if (SI_ISJET(sc->sc_type)) {
428 /* set throttle to 100 times per second */
429 regp->int_count = JET_INT_COUNT;
430 /* rx_intr_count is a NOP in Jet */
431 } else {
432 /* set throttle to 125 times per second */
433 regp->int_count = INT_COUNT;
434 /* rx intr max of 25 times per second */
435 regp->rx_int_count = RXINT_COUNT;
436 }
437 regp->int_pending = 0; /* no intr pending */
438 regp->int_scounter = 0; /* reset counter */
439 break;
440 case 0xff:
441 /*
442 * No modules found, so give up on this one.
443 */
444 printf("si%d: %s - no ports found\n", unit,
445 si_type[sc->sc_type]);
446 return 0;
447 default:
448 printf("si%d: download code version error - initstat %x\n",
449 unit, regp->initstat);
450 return EINVAL;
451 }
452
453 /*
454 * First time around the ports just count them in order
455 * to allocate some memory.
456 */
457 nport = 0;
458 modp = (struct si_module *)(maddr + 0x80);
459 for (;;) {
460 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp));
461 switch (modp->sm_type) {
462 case TA4:
463 DPRINT((0, DBG_DOWNLOAD,
464 "si%d: Found old TA4 module, 4 ports\n",
465 unit));
466 x = 4;
467 break;
468 case TA8:
469 DPRINT((0, DBG_DOWNLOAD,
470 "si%d: Found old TA8 module, 8 ports\n",
471 unit));
472 x = 8;
473 break;
474 case TA4_ASIC:
475 DPRINT((0, DBG_DOWNLOAD,
476 "si%d: Found ASIC TA4 module, 4 ports\n",
477 unit));
478 x = 4;
479 break;
480 case TA8_ASIC:
481 DPRINT((0, DBG_DOWNLOAD,
482 "si%d: Found ASIC TA8 module, 8 ports\n",
483 unit));
484 x = 8;
485 break;
486 case MTA:
487 DPRINT((0, DBG_DOWNLOAD,
488 "si%d: Found CD1400 module, 8 ports\n",
489 unit));
490 x = 8;
491 break;
492 case SXDC:
493 DPRINT((0, DBG_DOWNLOAD,
494 "si%d: Found SXDC module, 8 ports\n",
495 unit));
496 x = 8;
497 break;
498 default:
499 printf("si%d: unknown module type %d\n",
500 unit, modp->sm_type);
501 goto try_next;
502 }
503
504 /* this was limited in firmware and is also a driver issue */
505 if ((nport + x) > SI_MAXPORTPERCARD) {
506 printf("si%d: extra ports ignored\n", unit);
507 goto try_next;
508 }
509
510 nport += x;
511 si_Nports += x;
512 si_Nmodules++;
513
514try_next:
515 if (modp->sm_next == 0)
516 break;
517 modp = (struct si_module *)
518 (maddr + (unsigned)(modp->sm_next & 0x7fff));
519 }
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520 sc->sc_ports = malloc(sizeof(struct si_port) * nport,
521 M_DEVBUF, M_WAITOK | M_ZERO);
984263bc 522 sc->sc_nport = nport;
9a5ed89e 523 for (n = 0; n < nport; ++n) {
54607efb 524 callout_init(&sc->sc_ports[n].lstart_ch);
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525 callout_init(&sc->sc_ports[n].dtr_ch);
526 }
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527
528 /*
529 * allocate tty structures for ports
530 */
20a0f9a3 531 tp = malloc(sizeof(*tp) * nport, M_DEVBUF, M_WAITOK | M_ZERO);
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532 si__tty = tp;
533
534 /*
535 * Scan round the ports again, this time initialising.
536 */
537 pp = sc->sc_ports;
538 nmodule = 0;
539 modp = (struct si_module *)(maddr + 0x80);
540 uart_type = 1000; /* arbitary, > uchar_max */
541 for (;;) {
542 switch (modp->sm_type) {
543 case TA4:
544 nport = 4;
545 break;
546 case TA8:
547 nport = 8;
548 break;
549 case TA4_ASIC:
550 nport = 4;
551 break;
552 case TA8_ASIC:
553 nport = 8;
554 break;
555 case MTA:
556 nport = 8;
557 break;
558 case SXDC:
559 nport = 8;
560 break;
561 default:
562 goto try_next2;
563 }
564 nmodule++;
565 ccbp = (struct si_channel *)((char *)modp + 0x100);
566 if (uart_type == 1000)
567 uart_type = ccbp->type;
568 else if (uart_type != ccbp->type)
569 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n",
570 unit, nmodule,
571 ccbp->type, si_modulename(sc->sc_type, ccbp->type),
572 uart_type, si_modulename(sc->sc_type, uart_type));
573
574 for (x = 0; x < nport; x++, pp++, ccbp++) {
575 pp->sp_ccb = ccbp; /* save the address */
576 pp->sp_tty = tp++;
577 pp->sp_pend = IDLE_CLOSE;
578 pp->sp_state = 0; /* internal flag */
579 pp->sp_dtr_wait = 3 * hz;
580 pp->sp_iin.c_iflag = TTYDEF_IFLAG;
581 pp->sp_iin.c_oflag = TTYDEF_OFLAG;
582 pp->sp_iin.c_cflag = TTYDEF_CFLAG;
583 pp->sp_iin.c_lflag = TTYDEF_LFLAG;
584 termioschars(&pp->sp_iin);
585 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed =
586 TTYDEF_SPEED;;
587 pp->sp_iout = pp->sp_iin;
588 }
589try_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 if (done_chartimes == 0) {
604 for (spt = chartimes ; spt->sp_speed != -1; spt++) {
605 if ((spt->sp_code /= hz) == 0)
606 spt->sp_code = 1;
607 }
608 done_chartimes = 1;
609 }
610
e4c9c0c8 611 cdevsw_add(&si_cdevsw, 0x7f, unit);
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612/* path name devsw minor type uid gid perm*/
613 for (x = 0; x < sc->sc_nport; x++) {
614 /* sync with the manuals that start at 1 */
615 y = x + 1 + unit * (1 << SI_CARDSHIFT);
616 make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y);
617 make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y);
618 make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y);
619 make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y);
620 make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y);
621 make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y);
622 }
623 make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control");
624 return (0);
625}
626
627static int
dadab5e9 628siopen(dev_t dev, int flag, int mode, struct thread *td)
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629{
630 int oldspl, error;
631 int card, port;
632 struct si_softc *sc;
633 struct tty *tp;
634 volatile struct si_channel *ccbp;
635 struct si_port *pp;
636 int mynor = minor(dev);
637
638 /* quickly let in /dev/si_control */
639 if (IS_CONTROLDEV(mynor)) {
dadab5e9 640 if ((error = suser(td)))
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641 return(error);
642 return(0);
643 }
644
645 card = SI_CARD(mynor);
646 sc = devclass_get_softc(si_devclass, card);
647 if (sc == NULL)
648 return (ENXIO);
649
650 if (sc->sc_type == SIEMPTY) {
651 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n",
652 card, sc->sc_typename));
653 return(ENXIO);
654 }
655
656 port = SI_PORT(mynor);
657 if (port >= sc->sc_nport) {
658 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n",
659 card, sc->sc_nport));
660 return(ENXIO);
661 }
662
663#ifdef POLL
664 /*
665 * We've now got a device, so start the poller.
666 */
667 if (init_finished == 0) {
9a5ed89e 668 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
984263bc
MD
669 init_finished = 1;
670 }
671#endif
672
673 /* initial/lock device */
674 if (IS_STATE(mynor)) {
675 return(0);
676 }
677
678 pp = sc->sc_ports + port;
679 tp = pp->sp_tty; /* the "real" tty */
680 dev->si_tty = tp;
681 ccbp = pp->sp_ccb; /* Find control block */
682 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n",
dadab5e9 683 devtoname(dev), flag, mode, td));
984263bc
MD
684
685 oldspl = spltty(); /* Keep others out */
686 error = 0;
687
688open_top:
689 while (pp->sp_state & SS_DTR_OFF) {
377d4740 690 error = tsleep(&pp->sp_dtr_wait, PCATCH, "sidtr", 0);
984263bc
MD
691 if (error != 0)
692 goto out;
693 }
694
695 if (tp->t_state & TS_ISOPEN) {
696 /*
697 * The device is open, so everything has been initialised.
698 * handle conflicts.
699 */
700 if (IS_CALLOUT(mynor)) {
701 if (!pp->sp_active_out) {
702 error = EBUSY;
703 goto out;
704 }
705 } else {
706 if (pp->sp_active_out) {
707 if (flag & O_NONBLOCK) {
708 error = EBUSY;
709 goto out;
710 }
711 error = tsleep(&pp->sp_active_out,
377d4740 712 PCATCH, "sibi", 0);
984263bc
MD
713 if (error != 0)
714 goto out;
715 goto open_top;
716 }
717 }
718 if (tp->t_state & TS_XCLUDE &&
dadab5e9 719 suser(td)) {
984263bc
MD
720 DPRINT((pp, DBG_OPEN|DBG_FAIL,
721 "already open and EXCLUSIVE set\n"));
722 error = EBUSY;
723 goto out;
724 }
725 } else {
726 /*
727 * The device isn't open, so there are no conflicts.
728 * Initialize it. Avoid sleep... :-)
729 */
730 DPRINT((pp, DBG_OPEN, "first open\n"));
731 tp->t_oproc = si_start;
732 tp->t_stop = si_stop;
733 tp->t_param = siparam;
734 tp->t_dev = dev;
735 tp->t_termios = mynor & SI_CALLOUT_MASK
736 ? pp->sp_iout : pp->sp_iin;
737
738 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
739
740 ++pp->sp_wopeners; /* in case of sleep in siparam */
741
742 error = siparam(tp, &tp->t_termios);
743
744 --pp->sp_wopeners;
745 if (error != 0)
746 goto out;
747 /* XXX: we should goto_top if siparam slept */
748
749 /* set initial DCD state */
750 pp->sp_last_hi_ip = ccbp->hi_ip;
751 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) {
752 (*linesw[tp->t_line].l_modem)(tp, 1);
753 }
754 }
755
756 /* whoops! we beat the close! */
757 if (pp->sp_state & SS_CLOSING) {
758 /* try and stop it from proceeding to bash the hardware */
759 pp->sp_state &= ~SS_CLOSING;
760 }
761
762 /*
763 * Wait for DCD if necessary
764 */
765 if (!(tp->t_state & TS_CARR_ON) &&
766 !IS_CALLOUT(mynor) &&
767 !(tp->t_cflag & CLOCAL) &&
768 !(flag & O_NONBLOCK)) {
769 ++pp->sp_wopeners;
770 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n"));
377d4740 771 error = tsleep(TSA_CARR_ON(tp), PCATCH, "sidcd", 0);
984263bc
MD
772 --pp->sp_wopeners;
773 if (error != 0)
774 goto out;
775 goto open_top;
776 }
777
778 error = (*linesw[tp->t_line].l_open)(dev, tp);
779 si_disc_optim(tp, &tp->t_termios, pp);
780 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor))
781 pp->sp_active_out = TRUE;
782
783 pp->sp_state |= SS_OPEN; /* made it! */
784
785out:
786 splx(oldspl);
787
788 DPRINT((pp, DBG_OPEN, "leaving siopen\n"));
789
790 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0)
791 sihardclose(pp);
792
793 return(error);
794}
795
796static int
dadab5e9 797siclose(dev_t dev, int flag, int mode, struct thread *td)
984263bc
MD
798{
799 struct si_port *pp;
800 struct tty *tp;
801 int oldspl;
802 int error = 0;
803 int mynor = minor(dev);
804
805 if (IS_SPECIAL(mynor))
806 return(0);
807
808 oldspl = spltty();
809
810 pp = MINOR2PP(mynor);
811 tp = pp->sp_tty;
812
813 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n",
7b95be2a 814 devtoname(dev), flag, mode, td, pp->sp_state));
984263bc
MD
815
816 /* did we sleep and loose a race? */
817 if (pp->sp_state & SS_CLOSING) {
818 /* error = ESOMETING? */
819 goto out;
820 }
821
822 /* begin race detection.. */
823 pp->sp_state |= SS_CLOSING;
824
825 si_write_enable(pp, 0); /* block writes for ttywait() */
826
827 /* THIS MAY SLEEP IN TTYWAIT!!! */
828 (*linesw[tp->t_line].l_close)(tp, flag);
829
830 si_write_enable(pp, 1);
831
832 /* did we sleep and somebody started another open? */
833 if (!(pp->sp_state & SS_CLOSING)) {
834 /* error = ESOMETING? */
835 goto out;
836 }
837 /* ok. we are now still on the right track.. nuke the hardware */
838
839 if (pp->sp_state & SS_LSTART) {
54607efb 840 callout_stop(&pp->lstart_ch);
984263bc
MD
841 pp->sp_state &= ~SS_LSTART;
842 }
843
844 si_stop(tp, FREAD | FWRITE);
845
846 sihardclose(pp);
847 ttyclose(tp);
848 pp->sp_state &= ~SS_OPEN;
849
850out:
851 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n"));
852 splx(oldspl);
853 return(error);
854}
855
856static void
857sihardclose(struct si_port *pp)
858{
859 int oldspl;
860 struct tty *tp;
861 volatile struct si_channel *ccbp;
862
863 oldspl = spltty();
864
865 tp = pp->sp_tty;
866 ccbp = pp->sp_ccb; /* Find control block */
867 if (tp->t_cflag & HUPCL ||
868 (!pp->sp_active_out &&
869 !(ccbp->hi_ip & IP_DCD) &&
870 !(pp->sp_iin.c_cflag && CLOCAL)) ||
871 !(tp->t_state & TS_ISOPEN)) {
872
873 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
874 (void) si_command(pp, FCLOSE, SI_NOWAIT);
875
876 if (pp->sp_dtr_wait != 0) {
9a5ed89e
MD
877 callout_reset(&pp->dtr_ch, pp->sp_dtr_wait,
878 sidtrwakeup, pp);
984263bc
MD
879 pp->sp_state |= SS_DTR_OFF;
880 }
881
882 }
883 pp->sp_active_out = FALSE;
884 wakeup((caddr_t)&pp->sp_active_out);
885 wakeup(TSA_CARR_ON(tp));
886
887 splx(oldspl);
888}
889
890
891/*
892 * called at splsoftclock()...
893 */
894static void
895sidtrwakeup(void *chan)
896{
897 struct si_port *pp;
898 int oldspl;
899
900 oldspl = spltty();
901
902 pp = (struct si_port *)chan;
903 pp->sp_state &= ~SS_DTR_OFF;
904 wakeup(&pp->sp_dtr_wait);
905
906 splx(oldspl);
907}
908
909static int
910siwrite(dev_t dev, struct uio *uio, int flag)
911{
912 struct si_port *pp;
913 struct tty *tp;
914 int error = 0;
915 int mynor = minor(dev);
916 int oldspl;
917
918 if (IS_SPECIAL(mynor)) {
919 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n"));
920 return(ENODEV);
921 }
922 pp = MINOR2PP(mynor);
923 tp = pp->sp_tty;
924 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag));
925
926 oldspl = spltty();
927 /*
928 * If writes are currently blocked, wait on the "real" tty
929 */
930 while (pp->sp_state & SS_BLOCKWRITE) {
931 pp->sp_state |= SS_WAITWRITE;
932 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n"));
377d4740 933 if ((error = ttysleep(tp, (caddr_t)pp, PCATCH,
984263bc
MD
934 "siwrite", tp->t_timeout))) {
935 if (error == EWOULDBLOCK)
936 error = EIO;
937 goto out;
938 }
939 }
940
941 error = (*linesw[tp->t_line].l_write)(tp, uio, flag);
942out:
943 splx(oldspl);
944 return (error);
945}
946
947
948static int
dadab5e9 949siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
984263bc
MD
950{
951 struct si_port *pp;
952 struct tty *tp;
953 int error;
954 int mynor = minor(dev);
955 int oldspl;
956 int blocked = 0;
957#if defined(COMPAT_43)
958 u_long oldcmd;
959 struct termios term;
960#endif
961
962 if (IS_SI_IOCTL(cmd))
7b95be2a 963 return(si_Sioctl(dev, cmd, data, flag, td));
984263bc
MD
964
965 pp = MINOR2PP(mynor);
966 tp = pp->sp_tty;
967
968 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n",
969 devtoname(dev), cmd, data, flag));
970 if (IS_STATE(mynor)) {
971 struct termios *ct;
972
973 switch (mynor & SI_STATE_MASK) {
974 case SI_INIT_STATE_MASK:
975 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin;
976 break;
977 case SI_LOCK_STATE_MASK:
978 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin;
979 break;
980 default:
981 return (ENODEV);
982 }
983 switch (cmd) {
984 case TIOCSETA:
dadab5e9 985 error = suser(td);
984263bc
MD
986 if (error != 0)
987 return (error);
988 *ct = *(struct termios *)data;
989 return (0);
990 case TIOCGETA:
991 *(struct termios *)data = *ct;
992 return (0);
993 case TIOCGETD:
994 *(int *)data = TTYDISC;
995 return (0);
996 case TIOCGWINSZ:
997 bzero(data, sizeof(struct winsize));
998 return (0);
999 default:
1000 return (ENOTTY);
1001 }
1002 }
1003 /*
1004 * Do the old-style ioctl compat routines...
1005 */
1006#if defined(COMPAT_43)
1007 term = tp->t_termios;
1008 oldcmd = cmd;
1009 error = ttsetcompat(tp, &cmd, data, &term);
1010 if (error != 0)
1011 return (error);
1012 if (cmd != oldcmd)
1013 data = (caddr_t)&term;
1014#endif
1015 /*
1016 * Do the initial / lock state business
1017 */
1018 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
1019 int cc;
1020 struct termios *dt = (struct termios *)data;
1021 struct termios *lt = mynor & SI_CALLOUT_MASK
1022 ? &pp->sp_lout : &pp->sp_lin;
1023
1024 dt->c_iflag = (tp->t_iflag & lt->c_iflag) |
1025 (dt->c_iflag & ~lt->c_iflag);
1026 dt->c_oflag = (tp->t_oflag & lt->c_oflag) |
1027 (dt->c_oflag & ~lt->c_oflag);
1028 dt->c_cflag = (tp->t_cflag & lt->c_cflag) |
1029 (dt->c_cflag & ~lt->c_cflag);
1030 dt->c_lflag = (tp->t_lflag & lt->c_lflag) |
1031 (dt->c_lflag & ~lt->c_lflag);
1032 for (cc = 0; cc < NCCS; ++cc)
1033 if (lt->c_cc[cc] != 0)
1034 dt->c_cc[cc] = tp->t_cc[cc];
1035 if (lt->c_ispeed != 0)
1036 dt->c_ispeed = tp->t_ispeed;
1037 if (lt->c_ospeed != 0)
1038 dt->c_ospeed = tp->t_ospeed;
1039 }
1040
1041 /*
1042 * Block user-level writes to give the ttywait()
1043 * a chance to completely drain for commands
1044 * that require the port to be in a quiescent state.
1045 */
1046 switch (cmd) {
1047 case TIOCSETAW:
1048 case TIOCSETAF:
1049 case TIOCDRAIN:
1050#ifdef COMPAT_43
1051 case TIOCSETP:
1052#endif
1053 blocked++; /* block writes for ttywait() and siparam() */
1054 si_write_enable(pp, 0);
1055 }
1056
7b95be2a 1057 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
984263bc
MD
1058 if (error != ENOIOCTL)
1059 goto out;
1060
1061 oldspl = spltty();
1062
1063 error = ttioctl(tp, cmd, data, flag);
1064 si_disc_optim(tp, &tp->t_termios, pp);
1065 if (error != ENOIOCTL) {
1066 splx(oldspl);
1067 goto out;
1068 }
1069
1070 error = 0;
1071 switch (cmd) {
1072 case TIOCSBRK:
1073 si_command(pp, SBREAK, SI_WAIT);
1074 break;
1075 case TIOCCBRK:
1076 si_command(pp, EBREAK, SI_WAIT);
1077 break;
1078 case TIOCSDTR:
1079 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1080 break;
1081 case TIOCCDTR:
1082 (void) si_modem(pp, SET, 0);
1083 break;
1084 case TIOCMSET:
1085 (void) si_modem(pp, SET, *(int *)data);
1086 break;
1087 case TIOCMBIS:
1088 (void) si_modem(pp, BIS, *(int *)data);
1089 break;
1090 case TIOCMBIC:
1091 (void) si_modem(pp, BIC, *(int *)data);
1092 break;
1093 case TIOCMGET:
1094 *(int *)data = si_modem(pp, GET, 0);
1095 break;
1096 case TIOCMSDTRWAIT:
1097 /* must be root since the wait applies to following logins */
dadab5e9 1098 error = suser(td);
984263bc
MD
1099 if (error == 0)
1100 pp->sp_dtr_wait = *(int *)data * hz / 100;
1101 break;
1102 case TIOCMGDTRWAIT:
1103 *(int *)data = pp->sp_dtr_wait * 100 / hz;
1104 break;
1105 default:
1106 error = ENOTTY;
1107 }
1108 splx(oldspl);
1109
1110out:
1111 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error));
1112 if (blocked)
1113 si_write_enable(pp, 1);
1114 return(error);
1115}
1116
1117/*
1118 * Handle the Specialix ioctls. All MUST be called via the CONTROL device
1119 */
1120static int
dadab5e9 1121si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
984263bc
MD
1122{
1123 struct si_softc *xsc;
1124 struct si_port *xpp;
1125 volatile struct si_reg *regp;
1126 struct si_tcsi *dp;
1127 struct si_pstat *sps;
1128 int *ip, error = 0;
1129 int oldspl;
1130 int card, port;
1131 int mynor = minor(dev);
1132
1133 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n",
1134 devtoname(dev), cmd, data, flag));
1135
1136#if 1
1137 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT));
1138 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB));
1139 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY));
1140#endif
1141
1142 if (!IS_CONTROLDEV(mynor)) {
1143 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n"));
1144 return(ENODEV);
1145 }
1146
1147 oldspl = spltty(); /* better safe than sorry */
1148
1149 ip = (int *)data;
1150
dadab5e9 1151#define SUCHECK if ((error = suser(td))) goto out
984263bc
MD
1152
1153 switch (cmd) {
1154 case TCSIPORTS:
1155 *ip = si_Nports;
1156 goto out;
1157 case TCSIMODULES:
1158 *ip = si_Nmodules;
1159 goto out;
1160 case TCSISDBG_ALL:
1161 SUCHECK;
1162 si_debug = *ip;
1163 goto out;
1164 case TCSIGDBG_ALL:
1165 *ip = si_debug;
1166 goto out;
1167 default:
1168 /*
1169 * Check that a controller for this port exists
1170 */
1171
1172 /* may also be a struct si_pstat, a superset of si_tcsi */
1173
1174 dp = (struct si_tcsi *)data;
1175 sps = (struct si_pstat *)data;
1176 card = dp->tc_card;
1177 xsc = devclass_get_softc(si_devclass, card); /* check.. */
1178 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
1179 error = ENOENT;
1180 goto out;
1181 }
1182 /*
1183 * And check that a port exists
1184 */
1185 port = dp->tc_port;
1186 if (port < 0 || port >= xsc->sc_nport) {
1187 error = ENOENT;
1188 goto out;
1189 }
1190 xpp = xsc->sc_ports + port;
1191 regp = (struct si_reg *)xsc->sc_maddr;
1192 }
1193
1194 switch (cmd) {
1195 case TCSIDEBUG:
1196#ifdef SI_DEBUG
1197 SUCHECK;
1198 if (xpp->sp_debug)
1199 xpp->sp_debug = 0;
1200 else {
1201 xpp->sp_debug = DBG_ALL;
1202 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
1203 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
1204 }
1205 break;
1206#else
1207 error = ENODEV;
1208 goto out;
1209#endif
1210 case TCSISDBG_LEVEL:
1211 case TCSIGDBG_LEVEL:
1212#ifdef SI_DEBUG
1213 if (cmd == TCSIGDBG_LEVEL) {
1214 dp->tc_dbglvl = xpp->sp_debug;
1215 } else {
1216 SUCHECK;
1217 xpp->sp_debug = dp->tc_dbglvl;
1218 }
1219 break;
1220#else
1221 error = ENODEV;
1222 goto out;
1223#endif
1224 case TCSIGRXIT:
1225 dp->tc_int = regp->rx_int_count;
1226 break;
1227 case TCSIRXIT:
1228 SUCHECK;
1229 regp->rx_int_count = dp->tc_int;
1230 break;
1231 case TCSIGIT:
1232 dp->tc_int = regp->int_count;
1233 break;
1234 case TCSIIT:
1235 SUCHECK;
1236 regp->int_count = dp->tc_int;
1237 break;
1238 case TCSISTATE:
1239 dp->tc_int = xpp->sp_ccb->hi_ip;
1240 break;
1241 /* these next three use a different structure */
1242 case TCSI_PORT:
1243 SUCHECK;
1244 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
1245 break;
1246 case TCSI_CCB:
1247 SUCHECK;
1248 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
1249 break;
1250 case TCSI_TTY:
1251 SUCHECK;
1252 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty));
1253 break;
1254 default:
1255 error = EINVAL;
1256 goto out;
1257 }
1258out:
1259 splx(oldspl);
1260 return(error); /* success */
1261}
1262
1263/*
1264 * siparam() : Configure line params
1265 * called at spltty();
1266 * this may sleep, does not flush, nor wait for drain, nor block writes
1267 * caller must arrange this if it's important..
1268 */
1269static int
1270siparam(struct tty *tp, struct termios *t)
1271{
1272 struct si_port *pp = TP2PP(tp);
1273 volatile struct si_channel *ccbp;
1274 int oldspl, cflag, iflag, oflag, lflag;
1275 int error = 0; /* shutup gcc */
1276 int ispeed = 0; /* shutup gcc */
1277 int ospeed = 0; /* shutup gcc */
1278 BYTE val;
1279
1280 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
1281 cflag = t->c_cflag;
1282 iflag = t->c_iflag;
1283 oflag = t->c_oflag;
1284 lflag = t->c_lflag;
1285 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
1286 oflag, cflag, iflag, lflag));
1287
1288 /* XXX - if Jet host and SXDC module, use extended baud rates */
1289
1290 /* if not hung up.. */
1291 if (t->c_ospeed != 0) {
1292 /* translate baud rate to firmware values */
1293 ospeed = ttspeedtab(t->c_ospeed, bdrates);
1294 ispeed = t->c_ispeed ?
1295 ttspeedtab(t->c_ispeed, bdrates) : ospeed;
1296
1297 /* enforce legit baud rate */
1298 if (ospeed < 0 || ispeed < 0)
1299 return (EINVAL);
1300 }
1301
1302 oldspl = spltty();
1303
1304 ccbp = pp->sp_ccb;
1305
1306 /* ========== set hi_break ========== */
1307 val = 0;
1308 if (iflag & IGNBRK) /* Breaks */
1309 val |= BR_IGN;
1310 if (iflag & BRKINT) /* Interrupt on break? */
1311 val |= BR_INT;
1312 if (iflag & PARMRK) /* Parity mark? */
1313 val |= BR_PARMRK;
1314 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
1315 val |= BR_PARIGN;
1316 ccbp->hi_break = val;
1317
1318 /* ========== set hi_csr ========== */
1319 /* if not hung up.. */
1320 if (t->c_ospeed != 0) {
1321 /* Set I/O speeds */
1322 val = (ispeed << 4) | ospeed;
1323 }
1324 ccbp->hi_csr = val;
1325
1326 /* ========== set hi_mr2 ========== */
1327 val = 0;
1328 if (cflag & CSTOPB) /* Stop bits */
1329 val |= MR2_2_STOP;
1330 else
1331 val |= MR2_1_STOP;
1332 /*
1333 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1334 * a DCE, hence the reverse sense of RTS and CTS
1335 */
1336 /* Output Flow - RTS must be raised before data can be sent */
1337 if (cflag & CCTS_OFLOW)
1338 val |= MR2_RTSCONT;
1339
1340 ccbp->hi_mr2 = val;
1341
1342 /* ========== set hi_mr1 ========== */
1343 val = 0;
1344 if (!(cflag & PARENB)) /* Parity */
1345 val |= MR1_NONE;
1346 else
1347 val |= MR1_WITH;
1348 if (cflag & PARODD)
1349 val |= MR1_ODD;
1350
1351 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1352 val |= MR1_8_BITS;
1353 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1354 val |= MR1_7_BITS;
1355 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1356 val |= MR1_6_BITS;
1357 } else { /* Must be 5 */
1358 val |= MR1_5_BITS;
1359 }
1360 /*
1361 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1362 * a DCE, hence the reverse sense of RTS and CTS
1363 */
1364 /* Input Flow - CTS is raised when port is ready to receive data */
1365 if (cflag & CRTS_IFLOW)
1366 val |= MR1_CTSCONT;
1367
1368 ccbp->hi_mr1 = val;
1369
1370 /* ========== set hi_mask ========== */
1371 val = 0xff;
1372 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1373 val &= 0xFF;
1374 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1375 val &= 0x7F;
1376 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1377 val &= 0x3F;
1378 } else { /* Must be 5 */
1379 val &= 0x1F;
1380 }
1381 if (iflag & ISTRIP)
1382 val &= 0x7F;
1383
1384 ccbp->hi_mask = val;
1385
1386 /* ========== set hi_prtcl ========== */
1387 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
1388 if (iflag & IXANY)
1389 val |= SP_TANY;
1390 if (iflag & IXON)
1391 val |= SP_TXEN;
1392 if (iflag & IXOFF)
1393 val |= SP_RXEN;
1394 if (iflag & INPCK)
1395 val |= SP_PAEN;
1396
1397 ccbp->hi_prtcl = val;
1398
1399
1400 /* ========== set hi_{rx|tx}{on|off} ========== */
1401 /* XXX: the card TOTALLY shields us from the flow control... */
1402 ccbp->hi_txon = t->c_cc[VSTART];
1403 ccbp->hi_txoff = t->c_cc[VSTOP];
1404
1405 ccbp->hi_rxon = t->c_cc[VSTART];
1406 ccbp->hi_rxoff = t->c_cc[VSTOP];
1407
1408 /* ========== send settings to the card ========== */
1409 /* potential sleep here */
1410 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */
1411 si_command(pp, LOPEN, SI_WAIT); /* open it */
1412 else
1413 si_command(pp, CONFIG, SI_WAIT); /* change params */
1414
1415 /* ========== set DTR etc ========== */
1416 /* Hangup if ospeed == 0 */
1417 if (t->c_ospeed == 0) {
1418 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
1419 } else {
1420 /*
1421 * If the previous speed was 0, may need to re-enable
1422 * the modem signals
1423 */
1424 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1425 }
1426
1427 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n",
1428 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break));
1429
1430 splx(oldspl);
1431 return(error);
1432}
1433
1434/*
1435 * Enable or Disable the writes to this channel...
1436 * "state" -> enabled = 1; disabled = 0;
1437 */
1438static void
1439si_write_enable(struct si_port *pp, int state)
1440{
1441 int oldspl;
1442
1443 oldspl = spltty();
1444
1445 if (state) {
1446 pp->sp_state &= ~SS_BLOCKWRITE;
1447 if (pp->sp_state & SS_WAITWRITE) {
1448 pp->sp_state &= ~SS_WAITWRITE;
1449 /* thunder away! */
1450 wakeup((caddr_t)pp);
1451 }
1452 } else {
1453 pp->sp_state |= SS_BLOCKWRITE;
1454 }
1455
1456 splx(oldspl);
1457}
1458
1459/*
1460 * Set/Get state of modem control lines.
1461 * Due to DCE-like behaviour of the adapter, some signals need translation:
1462 * TIOCM_DTR DSR
1463 * TIOCM_RTS CTS
1464 */
1465static int
1466si_modem(struct si_port *pp, enum si_mctl cmd, int bits)
1467{
1468 volatile struct si_channel *ccbp;
1469 int x;
1470
1471 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits));
1472 ccbp = pp->sp_ccb; /* Find channel address */
1473 switch (cmd) {
1474 case GET:
1475 x = ccbp->hi_ip;
1476 bits = TIOCM_LE;
1477 if (x & IP_DCD) bits |= TIOCM_CAR;
1478 if (x & IP_DTR) bits |= TIOCM_DTR;
1479 if (x & IP_RTS) bits |= TIOCM_RTS;
1480 if (x & IP_RI) bits |= TIOCM_RI;
1481 return(bits);
1482 case SET:
1483 ccbp->hi_op &= ~(OP_DSR|OP_CTS);
1484 /* fall through */
1485 case BIS:
1486 x = 0;
1487 if (bits & TIOCM_DTR)
1488 x |= OP_DSR;
1489 if (bits & TIOCM_RTS)
1490 x |= OP_CTS;
1491 ccbp->hi_op |= x;
1492 break;
1493 case BIC:
1494 if (bits & TIOCM_DTR)
1495 ccbp->hi_op &= ~OP_DSR;
1496 if (bits & TIOCM_RTS)
1497 ccbp->hi_op &= ~OP_CTS;
1498 }
1499 return 0;
1500}
1501
1502/*
1503 * Handle change of modem state
1504 */
1505static void
1506si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1507{
1508 /* if a modem dev */
1509 if (hi_ip & IP_DCD) {
1510 if (!(pp->sp_last_hi_ip & IP_DCD)) {
1511 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n",
1512 tp->t_line));
1513 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
1514 }
1515 } else {
1516 if (pp->sp_last_hi_ip & IP_DCD) {
1517 DPRINT((pp, DBG_INTR, "modem carr off\n"));
1518 if ((*linesw[tp->t_line].l_modem)(tp, 0))
1519 (void) si_modem(pp, SET, 0);
1520 }
1521 }
1522 pp->sp_last_hi_ip = hi_ip;
1523
1524}
1525
1526/*
1527 * Poller to catch missed interrupts.
1528 *
1529 * Note that the SYSV Specialix drivers poll at 100 times per second to get
1530 * better response. We could really use a "periodic" version timeout(). :-)
1531 */
1532#ifdef POLL
1533static void
1534si_poll(void *nothing)
1535{
1536 struct si_softc *sc;
1537 int i;
1538 volatile struct si_reg *regp;
1539 struct si_port *pp;
1540 int lost, oldspl, port;
1541
1542 DPRINT((0, DBG_POLL, "si_poll()\n"));
1543 oldspl = spltty();
1544 if (in_intr)
1545 goto out;
1546 lost = 0;
1547 for (i = 0; i < si_numunits; i++) {
1548 sc = devclass_get_softc(si_devclass, i);
1549 if (sc == NULL || sc->sc_type == SIEMPTY)
1550 continue;
1551 regp = (struct si_reg *)sc->sc_maddr;
1552
1553 /*
1554 * See if there has been a pending interrupt for 2 seconds
1555 * or so. The test (int_scounter >= 200) won't correspond
1556 * to 2 seconds if int_count gets changed.
1557 */
1558 if (regp->int_pending != 0) {
1559 if (regp->int_scounter >= 200 &&
1560 regp->initstat == 1) {
1561 printf("si%d: lost intr\n", i);
1562 lost++;
1563 }
1564 } else {
1565 regp->int_scounter = 0;
1566 }
1567
1568 /*
1569 * gripe about no input flow control..
1570 */
1571 pp = sc->sc_ports;
1572 for (port = 0; port < sc->sc_nport; pp++, port++) {
1573 if (pp->sp_delta_overflows > 0) {
1574 printf("si%d: %d tty level buffer overflows\n",
1575 i, pp->sp_delta_overflows);
1576 pp->sp_delta_overflows = 0;
1577 }
1578 }
1579 }
1580 if (lost || si_realpoll)
1581 si_intr(NULL); /* call intr with fake vector */
1582out:
1583 splx(oldspl);
1584
9a5ed89e 1585 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
984263bc
MD
1586}
1587#endif /* ifdef POLL */
1588
1589/*
1590 * The interrupt handler polls ALL ports on ALL adapters each time
1591 * it is called.
1592 */
1593
1594static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1595static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1596
1597void
1598si_intr(void *arg)
1599{
1600 struct si_softc *sc;
1601 struct si_port *pp;
1602 volatile struct si_channel *ccbp;
1603 struct tty *tp;
1604 volatile caddr_t maddr;
1605 BYTE op, ip;
1606 int x, card, port, n, i, isopen;
1607 volatile BYTE *z;
1608 BYTE c;
1609
1610 sc = arg;
1611
1612 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1613 if (in_intr)
1614 return;
1615 in_intr = 1;
1616
1617 /*
1618 * When we get an int we poll all the channels and do ALL pending
1619 * work, not just the first one we find. This allows all cards to
1620 * share the same vector.
1621 *
1622 * XXX - But if we're sharing the vector with something that's NOT
1623 * a SI/XIO/SX card, we may be making more work for ourselves.
1624 */
1625 for (card = 0; card < si_numunits; card++) {
1626 sc = devclass_get_softc(si_devclass, card);
1627 if (sc == NULL || sc->sc_type == SIEMPTY)
1628 continue;
1629
1630 /*
1631 * First, clear the interrupt
1632 */
1633 switch(sc->sc_type) {
1634 case SIHOST:
1635 maddr = sc->sc_maddr;
1636 ((volatile struct si_reg *)maddr)->int_pending = 0;
1637 /* flag nothing pending */
1638 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
1639 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
1640 break;
1641 case SIHOST2:
1642 maddr = sc->sc_maddr;
1643 ((volatile struct si_reg *)maddr)->int_pending = 0;
1644 *(maddr+SIPLIRQCLR) = 0x00;
1645 *(maddr+SIPLIRQCLR) = 0x10;
1646 break;
1647 case SIPCI:
1648 maddr = sc->sc_maddr;
1649 ((volatile struct si_reg *)maddr)->int_pending = 0;
1650 *(maddr+SIPCIINTCL) = 0x0;
1651 break;
1652 case SIJETPCI: /* fall through to JETISA case */
1653 case SIJETISA:
1654 maddr = sc->sc_maddr;
1655 ((volatile struct si_reg *)maddr)->int_pending = 0;
1656 *(maddr+SIJETINTCL) = 0x0;
1657 break;
1658 case SIEISA:
1659 maddr = sc->sc_maddr;
1660 ((volatile struct si_reg *)maddr)->int_pending = 0;
1661 (void)inb(sc->sc_iobase + 3);
1662 break;
1663 case SIEMPTY:
1664 default:
1665 continue;
1666 }
1667 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1668
1669 /*
1670 * check each port
1671 */
1672 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1673 pp++, port++) {
1674 ccbp = pp->sp_ccb;
1675 tp = pp->sp_tty;
1676
1677 /*
1678 * See if a command has completed ?
1679 */
1680 if (ccbp->hi_stat != pp->sp_pend) {
1681 DPRINT((pp, DBG_INTR,
1682 "si_intr hi_stat = 0x%x, pend = %d\n",
1683 ccbp->hi_stat, pp->sp_pend));
1684 switch(pp->sp_pend) {
1685 case LOPEN:
1686 case MPEND:
1687 case MOPEN:
1688 case CONFIG:
1689 case SBREAK:
1690 case EBREAK:
1691 pp->sp_pend = ccbp->hi_stat;
1692 /* sleeping in si_command */
1693 wakeup(&pp->sp_state);
1694 break;
1695 default:
1696 pp->sp_pend = ccbp->hi_stat;
1697 }
1698 }
1699
1700 /*
1701 * Continue on if it's closed
1702 */
1703 if (ccbp->hi_stat == IDLE_CLOSE) {
1704 continue;
1705 }
1706
1707 /*
1708 * Do modem state change if not a local device
1709 */
1710 si_modem_state(pp, tp, ccbp->hi_ip);
1711
1712 /*
1713 * Check to see if we should 'receive' characters.
1714 */
1715 if (tp->t_state & TS_CONNECTED &&
1716 tp->t_state & TS_ISOPEN)
1717 isopen = 1;
1718 else
1719 isopen = 0;
1720
1721 /*
1722 * Do input break processing
1723 */
1724 if (ccbp->hi_state & ST_BREAK) {
1725 if (isopen) {
1726 (*linesw[tp->t_line].l_rint)(TTY_BI, tp);
1727 }
1728 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1729 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1730 }
1731
1732 /*
1733 * Do RX stuff - if not open then dump any characters.
1734 * XXX: This is VERY messy and needs to be cleaned up.
1735 *
1736 * XXX: can we leave data in the host adapter buffer
1737 * when the clists are full? That may be dangerous
1738 * if the user cannot get an interrupt signal through.
1739 */
1740
1741 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
1742
1743 if (!isopen) {
1744 ccbp->hi_rxopos = ccbp->hi_rxipos;
1745 goto end_rx;
1746 }
1747
1748 /*
1749 * If the tty input buffers are blocked, stop emptying
1750 * the incoming buffers and let the auto flow control
1751 * assert..
1752 */
1753 if (tp->t_state & TS_TBLOCK) {
1754 goto end_rx;
1755 }
1756
1757 /*
1758 * Process read characters if not skipped above
1759 */
1760 op = ccbp->hi_rxopos;
1761 ip = ccbp->hi_rxipos;
1762 c = ip - op;
1763 if (c == 0) {
1764 goto end_rx;
1765 }
1766
1767 n = c & 0xff;
1768 if (n > 250)
1769 n = 250;
1770
1771 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1772 n, op, ip));
1773
1774 /*
1775 * Suck characters out of host card buffer into the
1776 * "input staging buffer" - so that we dont leave the
1777 * host card in limbo while we're possibly echoing
1778 * characters and possibly flushing input inside the
1779 * ldisc l_rint() routine.
1780 */
1781 if (n <= SI_BUFFERSIZE - op) {
1782
1783 DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
1784 z = ccbp->hi_rxbuf + op;
1785 si_vbcopy(z, si_rxbuf, n);
1786
1787 op += n;
1788 } else {
1789 x = SI_BUFFERSIZE - op;
1790
1791 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
1792 z = ccbp->hi_rxbuf + op;
1793 si_vbcopy(z, si_rxbuf, x);
1794
1795 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
1796 n - x));
1797 z = ccbp->hi_rxbuf;
1798 si_vbcopy(z, si_rxbuf + x, n - x);
1799
1800 op += n;
1801 }
1802
1803 /* clear collected characters from buffer */
1804 ccbp->hi_rxopos = op;
1805
1806 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1807 n, op, ip));
1808
1809 /*
1810 * at this point...
1811 * n = number of chars placed in si_rxbuf
1812 */
1813
1814 /*
1815 * Avoid the grotesquely inefficient lineswitch
1816 * routine (ttyinput) in "raw" mode. It usually
1817 * takes about 450 instructions (that's without
1818 * canonical processing or echo!). slinput is
1819 * reasonably fast (usually 40 instructions
1820 * plus call overhead).
1821 */
1822 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1823
1824 /* block if the driver supports it */
1825 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER &&
1826 (tp->t_cflag & CRTS_IFLOW ||
1827 tp->t_iflag & IXOFF) &&
1828 !(tp->t_state & TS_TBLOCK))
1829 ttyblock(tp);
1830
1831 tk_nin += n;
1832 tk_rawcc += n;
1833 tp->t_rawcc += n;
1834
1835 pp->sp_delta_overflows +=
1836 b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
1837
1838 ttwakeup(tp);
1839 if (tp->t_state & TS_TTSTOP &&
1840 (tp->t_iflag & IXANY ||
1841 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1842 tp->t_state &= ~TS_TTSTOP;
1843 tp->t_lflag &= ~FLUSHO;
1844 si_start(tp);
1845 }
1846 } else {
1847 /*
1848 * It'd be nice to not have to go through the
1849 * function call overhead for each char here.
1850 * It'd be nice to block input it, saving a
1851 * loop here and the call/return overhead.
1852 */
1853 for(x = 0; x < n; x++) {
1854 i = si_rxbuf[x];
1855 if ((*linesw[tp->t_line].l_rint)(i, tp)
1856 == -1) {
1857 pp->sp_delta_overflows++;
1858 }
1859 /*
1860 * doesn't seem to be much point doing
1861 * this here.. this driver has no
1862 * softtty processing! ??
1863 */
1864 if (pp->sp_hotchar && i == pp->sp_hotchar) {
1865 setsofttty();
1866 }
1867 }
1868 }
1869 goto more_rx; /* try for more until RXbuf is empty */
1870
1871 end_rx: /* XXX: Again, sorry about the gotos.. :-) */
1872
1873 /*
1874 * Do TX stuff
1875 */
1876 (*linesw[tp->t_line].l_start)(tp);
1877
1878 } /* end of for (all ports on this controller) */
1879 } /* end of for (all controllers) */
1880
1881 in_intr = 0;
1882 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1883}
1884
1885/*
1886 * Nudge the transmitter...
1887 *
1888 * XXX: I inherited some funny code here. It implies the host card only
1889 * interrupts when the transmit buffer reaches the low-water-mark, and does
1890 * not interrupt when it's actually hits empty. In some cases, we have
1891 * processes waiting for complete drain, and we need to simulate an interrupt
1892 * about when we think the buffer is going to be empty (and retry if not).
1893 * I really am not certain about this... I *need* the hardware manuals.
1894 */
1895static void
1896si_start(struct tty *tp)
1897{
1898 struct si_port *pp;
1899 volatile struct si_channel *ccbp;
1900 struct clist *qp;
1901 BYTE ipos;
1902 int nchar;
1903 int oldspl, count, n, amount, buffer_full;
1904
1905 oldspl = spltty();
1906
1907 qp = &tp->t_outq;
1908 pp = TP2PP(tp);
1909
1910 DPRINT((pp, DBG_ENTRY|DBG_START,
1911 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n",
1912 tp, tp->t_state, pp->sp_state, qp->c_cc));
1913
1914 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
1915 goto out;
1916
1917 buffer_full = 0;
1918 ccbp = pp->sp_ccb;
1919
1920 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1921 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count));
1922
1923 while ((nchar = qp->c_cc) > 0) {
1924 if ((BYTE)count >= 255) {
1925 buffer_full++;
1926 break;
1927 }
1928 amount = min(nchar, (255 - (BYTE)count));
1929 ipos = (unsigned int)ccbp->hi_txipos;
1930 n = q_to_b(&tp->t_outq, si_txbuf, amount);
1931 /* will it fit in one lump? */
1932 if ((SI_BUFFERSIZE - ipos) >= n) {
1933 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n);
1934 } else {
1935 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos],
1936 SI_BUFFERSIZE - ipos);
1937 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos),
1938 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos));
1939 }
1940 ccbp->hi_txipos += n;
1941 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1942 }
1943
1944 if (count != 0 && nchar == 0) {
1945 tp->t_state |= TS_BUSY;
1946 } else {
1947 tp->t_state &= ~TS_BUSY;
1948 }
1949
1950 /* wakeup time? */
1951 ttwwakeup(tp);
1952
1953 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n",
1954 (BYTE)count, nchar, tp->t_state));
1955
1956 if (tp->t_state & TS_BUSY)
1957 {
1958 int time;
1959
1960 time = ttspeedtab(tp->t_ospeed, chartimes);
1961
1962 if (time > 0) {
1963 if (time < nchar)
1964 time = nchar / time;
1965 else
1966 time = 2;
1967 } else {
1968 DPRINT((pp, DBG_START,
1969 "bad char time value! %d\n", time));
1970 time = hz/10;
1971 }
1972
1973 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) {
54607efb 1974 callout_stop(&pp->lstart_ch);
984263bc
MD
1975 } else {
1976 pp->sp_state |= SS_LSTART;
1977 }
1978 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
54607efb 1979 callout_reset(&pp->lstart_ch, time, si_lstart, (void *)pp);
984263bc
MD
1980 }
1981
1982out:
1983 splx(oldspl);
1984 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1985}
1986
1987/*
1988 * Note: called at splsoftclock from the timeout code
1989 * This has to deal with two things... cause wakeups while waiting for
1990 * tty drains on last process exit, and call l_start at about the right
1991 * time for protocols like ppp.
1992 */
1993static void
1994si_lstart(void *arg)
1995{
1996 struct si_port *pp = arg;
1997 struct tty *tp;
1998 int oldspl;
1999
2000 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
2001 pp, pp->sp_state));
2002
2003 oldspl = spltty();
2004
2005 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) {
2006 splx(oldspl);
2007 return;
2008 }
2009 pp->sp_state &= ~SS_LSTART;
2010 pp->sp_state |= SS_INLSTART;
2011
2012 tp = pp->sp_tty;
2013
2014 /* deal with the process exit case */
2015 ttwwakeup(tp);
2016
2017 /* nudge protocols - eg: ppp */
2018 (*linesw[tp->t_line].l_start)(tp);
2019
2020 pp->sp_state &= ~SS_INLSTART;
2021 splx(oldspl);
2022}
2023
2024/*
2025 * Stop output on a line. called at spltty();
2026 */
2027void
2028si_stop(struct tty *tp, int rw)
2029{
2030 volatile struct si_channel *ccbp;
2031 struct si_port *pp;
2032
2033 pp = TP2PP(tp);
2034 ccbp = pp->sp_ccb;
2035
2036 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
2037
2038 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
2039 if (rw & FWRITE) {
2040 /* what level are we meant to be flushing anyway? */
2041 if (tp->t_state & TS_BUSY) {
2042 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT);
2043 tp->t_state &= ~TS_BUSY;
2044 ttwwakeup(tp); /* Bruce???? */
2045 }
2046 }
2047#if 1 /* XXX: this doesn't work right yet.. */
2048 /* XXX: this may have been failing because we used to call l_rint()
2049 * while we were looping based on these two counters. Now, we collect
2050 * the data and then loop stuffing it into l_rint(), making this
2051 * useless. Should we cause this to blow away the staging buffer?
2052 */
2053 if (rw & FREAD) {
2054 ccbp->hi_rxopos = ccbp->hi_rxipos;
2055 }
2056#endif
2057}
2058
2059/*
2060 * Issue a command to the host card CPU.
2061 */
2062
2063static void
2064si_command(struct si_port *pp, int cmd, int waitflag)
2065{
2066 int oldspl;
2067 volatile struct si_channel *ccbp = pp->sp_ccb;
2068 int x;
2069
2070 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n",
2071 pp, cmd, waitflag, ccbp->hi_stat));
2072
2073 oldspl = spltty(); /* Keep others out */
2074
2075 /* wait until it's finished what it was doing.. */
2076 /* XXX: sits in IDLE_BREAK until something disturbs it or break
2077 * is turned off. */
2078 while((x = ccbp->hi_stat) != IDLE_OPEN &&
2079 x != IDLE_CLOSE &&
2080 x != IDLE_BREAK &&
2081 x != cmd) {
2082 if (in_intr) { /* Prevent sleep in intr */
2083 DPRINT((pp, DBG_PARAM,
2084 "cmd intr collision - completing %d\trequested %d\n",
2085 x, cmd));
2086 splx(oldspl);
2087 return;
377d4740 2088 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
984263bc
MD
2089 "sicmd1", 1)) {
2090 splx(oldspl);
2091 return;
2092 }
2093 }
2094 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
2095
2096 /* if there was a pending command, cause a state-change wakeup */
2097 switch(pp->sp_pend) {
2098 case LOPEN:
2099 case MPEND:
2100 case MOPEN:
2101 case CONFIG:
2102 case SBREAK:
2103 case EBREAK:
2104 wakeup(&pp->sp_state);
2105 break;
2106 default:
2107 break;
2108 }
2109
2110 pp->sp_pend = cmd; /* New command pending */
2111 ccbp->hi_stat = cmd; /* Post it */
2112
2113 if (waitflag) {
2114 if (in_intr) { /* If in interrupt handler */
2115 DPRINT((pp, DBG_PARAM,
2116 "attempt to sleep in si_intr - cmd req %d\n",
2117 cmd));
2118 splx(oldspl);
2119 return;
2120 } else while(ccbp->hi_stat != IDLE_OPEN &&
2121 ccbp->hi_stat != IDLE_BREAK) {
377d4740 2122 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
984263bc
MD
2123 "sicmd2", 0))
2124 break;
2125 }
2126 }
2127 splx(oldspl);
2128}
2129
2130static void
2131si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp)
2132{
2133 /*
2134 * XXX can skip a lot more cases if Smarts. Maybe
2135 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we
2136 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state.
2137 */
2138 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) &&
2139 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) &&
2140 (!(t->c_iflag & PARMRK) ||
2141 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) &&
2142 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) &&
2143 linesw[tp->t_line].l_rint == ttyinput)
2144 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2145 else
2146 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2147 pp->sp_hotchar = linesw[tp->t_line].l_hotchar;
2148 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n",
2149 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off",
2150 pp->sp_hotchar));
2151}
2152
2153
2154#ifdef SI_DEBUG
2155
2156void
2157si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
2158{
e2565a42 2159 __va_list ap;
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2160
2161 if ((pp == NULL && (si_debug&flags)) ||
2162 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
2163 if (pp != NULL)
2164 printf("%ci%d(%d): ", 's',
2165 (int)SI_CARD(minor(pp->sp_tty->t_dev)),
2166 (int)SI_PORT(minor(pp->sp_tty->t_dev)));
e2565a42 2167 __va_start(ap, fmt);
984263bc 2168 vprintf(fmt, ap);
e2565a42 2169 __va_end(ap);
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2170 }
2171}
2172
2173static char *
2174si_mctl2str(enum si_mctl cmd)
2175{
2176 switch (cmd) {
2177 case GET:
2178 return("GET");
2179 case SET:
2180 return("SET");
2181 case BIS:
2182 return("BIS");
2183 case BIC:
2184 return("BIC");
2185 }
2186 return("BAD");
2187}
2188
2189#endif /* DEBUG */
2190
2191static char *
2192si_modulename(int host_type, int uart_type)
2193{
2194 switch (host_type) {
2195 /* Z280 based cards */
2196 case SIEISA:
2197 case SIHOST2:
2198 case SIHOST:
2199 case SIPCI:
2200 switch (uart_type) {
2201 case 0:
2202 return(" (XIO)");
2203 case 1:
2204 return(" (SI)");
2205 }
2206 break;
2207 /* T225 based hosts */
2208 case SIJETPCI:
2209 case SIJETISA:
2210 switch (uart_type) {
2211 case 0:
2212 return(" (SI)");
2213 case 40:
2214 return(" (XIO)");
2215 case 72:
2216 return(" (SXDC)");
2217 }
2218 break;
2219 }
2220 return("");
2221}