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DEVFS - remove dev_ops_add(), dev_ops_get(), and get_dev()
[dragonfly.git] / sys / dev / serial / si / si.c
CommitLineData
984263bc
MD		 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 $
e3869ec7 34 * $DragonFly: src/sys/dev/serial/si/si.c,v 1.23 2006/12/22 23:26:24 swildner Exp $
984263bc
MD		 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>
895c1f85 53#include <sys/priv.h>
984263bc
MD		 54#include <sys/conf.h>
55#include <sys/fcntl.h>
56#include <sys/dkstat.h>
57#include <sys/kernel.h>
58#include <sys/malloc.h>
59#include <sys/sysctl.h>
60#include <sys/bus.h>
984263bc 61#include <sys/rman.h>
1f7ab7c9 62#include <sys/thread2.h>
984263bc
MD		 63
64#include <machine/clock.h>
65
66#include <vm/vm.h>
67#include <vm/pmap.h>
68
69#include <machine/stdarg.h>
70
1f2de5d4
MD		 71#include "sireg.h"
72#include "sivar.h"
73#include "si.h"
984263bc
MD		 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);
b13267a5 99static int si_Sioctl(cdev_t, u_long, caddr_t, int, struct ucred *);
984263bc
MD		 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
fef8985e
MD		 122static struct dev_ops si_ops = {
123 { "si", CDEV_MAJOR, D_TTY | D_KQFILTER },
124 .d_open = siopen,
125 .d_close = siclose,
126 .d_read = ttyread,
127 .d_write = siwrite,
128 .d_ioctl = siioctl,
129 .d_poll = ttypoll,
a32446b7
MD		 130 .d_kqfilter = ttykqfilter,
131 .d_revoke = ttyrevoke
984263bc
MD		 132};
133
134static int si_Nports;
135static int si_Nmodules;
136static int si_debug = 0; /* data, not bss, so it's patchable */
137
138SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, "");
139
140static struct tty *si__tty;
141
142static int si_numunits;
9a5ed89e 143static struct callout poll_ch;
984263bc
MD		 144
145devclass_t si_devclass;
146
147#ifndef B2000 /* not standard, but the hardware knows it. */
148# define B2000 2000
149#endif
150static struct speedtab bdrates[] = {
151 { B75, CLK75, }, /* 0x0 */
152 { B110, CLK110, }, /* 0x1 */
153 { B150, CLK150, }, /* 0x3 */
154 { B300, CLK300, }, /* 0x4 */
155 { B600, CLK600, }, /* 0x5 */
156 { B1200, CLK1200, }, /* 0x6 */
157 { B2000, CLK2000, }, /* 0x7 */
158 { B2400, CLK2400, }, /* 0x8 */
159 { B4800, CLK4800, }, /* 0x9 */
160 { B9600, CLK9600, }, /* 0xb */
161 { B19200, CLK19200, }, /* 0xc */
162 { B38400, CLK38400, }, /* 0x2 (out of order!) */
163 { B57600, CLK57600, }, /* 0xd */
164 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */
165 { -1, -1 },
166};
167
168
169/* populated with approx character/sec rates - translated at card
170 * initialisation time to chars per tick of the clock */
171static int done_chartimes = 0;
172static struct speedtab chartimes[] = {
173 { B75, 8, },
174 { B110, 11, },
175 { B150, 15, },
176 { B300, 30, },
177 { B600, 60, },
178 { B1200, 120, },
179 { B2000, 200, },
180 { B2400, 240, },
181 { B4800, 480, },
182 { B9600, 960, },
183 { B19200, 1920, },
184 { B38400, 3840, },
185 { B57600, 5760, },
186 { B115200, 11520, },
187 { -1, -1 },
188};
189static volatile int in_intr = 0; /* Inside interrupt handler? */
190
191#ifdef POLL
192static int si_pollrate; /* in addition to irq */
193static int si_realpoll = 0; /* poll HW on timer */
194
195SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, "");
196SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, "");
197
198static int init_finished = 0;
199static void si_poll(void *);
200#endif
201
202/*
203 * Array of adapter types and the corresponding RAM size. The order of
204 * entries here MUST match the ordinal of the adapter type.
205 */
206static char *si_type[] = {
207 "EMPTY",
208 "SIHOST",
209 "SIMCA", /* FreeBSD does not support Microchannel */
210 "SIHOST2",
211 "SIEISA",
212 "SIPCI",
213 "SXPCI",
214 "SXISA",
215};
216
217/*
218 * We have to make an 8 bit version of bcopy, since some cards can't
219 * deal with 32 bit I/O
220 */
221static void __inline
222si_bcopy(const void *src, void *dst, size_t len)
223{
7e2c1a6b
JS		 224 const uint8_t *src_byte = (const uint8_t *)src;
225 uint8_t *dst_byte = (uint8_t *)dst;
226
984263bc 227 while (len--)
7e2c1a6b 228 *dst_byte++ = *src_byte++;
984263bc 229}
7e2c1a6b 230
984263bc
MD		 231static void __inline
232si_vbcopy(const volatile void *src, void *dst, size_t len)
233{
7e2c1a6b
JS		 234 volatile const uint8_t *src_byte = (volatile const uint8_t *)src;
235 uint8_t *dst_byte = (uint8_t *)dst;
236
984263bc 237 while (len--)
7e2c1a6b 238 *dst_byte++ = *src_byte++;
984263bc 239}
7e2c1a6b 240
984263bc
MD		 241static void __inline
242si_bcopyv(const void *src, volatile void *dst, size_t len)
243{
7e2c1a6b
JS		 244 const uint8_t *src_byte = (const uint8_t *)src;
245 volatile uint8_t *dst_byte = (volatile uint8_t *)dst;
246
984263bc 247 while (len--)
7e2c1a6b 248 *dst_byte++ = *src_byte++;
984263bc
MD		 249}
250
984263bc
MD		 251/*
252 * Attach the device. Initialize the card.
253 */
254int
255siattach(device_t dev)
256{
257 int unit;
258 struct si_softc *sc;
259 struct si_port *pp;
260 volatile struct si_channel *ccbp;
261 volatile struct si_reg *regp;
262 volatile caddr_t maddr;
263 struct si_module *modp;
264 struct tty *tp;
265 struct speedtab *spt;
266 int nmodule, nport, x, y;
267 int uart_type;
54607efb 268 int n;
984263bc 269
9a5ed89e
MD		 270 if ((poll_ch.c_flags & CALLOUT_DID_INIT) == 0)
271 callout_init(&poll_ch);
272
984263bc
MD		 273 sc = device_get_softc(dev);
274 unit = device_get_unit(dev);
275
276 sc->sc_typename = si_type[sc->sc_type];
277 if (si_numunits < unit + 1)
278 si_numunits = unit + 1;
279
280 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit));
281
282#ifdef POLL
283 if (si_pollrate == 0) {
284 si_pollrate = POLLHZ; /* in addition to irq */
285#ifdef REALPOLL
286 si_realpoll = 1; /* scan always */
287#endif
288 }
289#endif
290
291 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit,
292 sc->sc_typename, sc->sc_paddr, sc->sc_maddr));
293
294 sc->sc_ports = NULL; /* mark as uninitialised */
295
296 maddr = sc->sc_maddr;
297
298 /* Stop the CPU first so it won't stomp around while we load */
299
300 switch (sc->sc_type) {
301 case SIEISA:
302 outb(sc->sc_iobase + 2, sc->sc_irq << 4);
303 break;
304 case SIPCI:
305 *(maddr+SIPCIRESET) = 0;
306 break;
307 case SIJETPCI: /* fall through to JET ISA */
308 case SIJETISA:
309 *(maddr+SIJETCONFIG) = 0;
310 break;
311 case SIHOST2:
312 *(maddr+SIPLRESET) = 0;
313 break;
314 case SIHOST:
315 *(maddr+SIRESET) = 0;
316 break;
317 default: /* this should never happen */
e3869ec7 318 kprintf("si%d: unsupported configuration\n", unit);
984263bc
MD		 319 return EINVAL;
320 break;
321 }
322
323 /* OK, now lets download the download code */
324
325 if (SI_ISJET(sc->sc_type)) {
326 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n",
327 unit, si3_t225_dsize));
328 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr,
329 si3_t225_dsize);
330 DPRINT((0, DBG_DOWNLOAD,
331 "si%d: jet_bootstrap: nbytes %d -> %x\n",
332 unit, si3_t225_bsize, si3_t225_bootloadaddr));
333 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr,
334 si3_t225_bsize);
335 } else {
336 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n",
337 unit, si2_z280_dsize));
338 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr,
339 si2_z280_dsize);
340 }
341
342 /* Now start the CPU */
343
344 switch (sc->sc_type) {
345 case SIEISA:
346 /* modify the download code to tell it that it's on an EISA */
347 *(maddr + 0x42) = 1;
348 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4);
349 (void)inb(sc->sc_iobase + 3); /* reset interrupt */
350 break;
351 case SIPCI:
352 /* modify the download code to tell it that it's on a PCI */
353 *(maddr+0x42) = 1;
354 *(maddr+SIPCIRESET) = 1;
355 *(maddr+SIPCIINTCL) = 0;
356 break;
357 case SIJETPCI:
358 *(maddr+SIJETRESET) = 0;
359 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN;
360 break;
361 case SIJETISA:
362 *(maddr+SIJETRESET) = 0;
363 switch (sc->sc_irq) {
364 case 9:
365 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90;
366 break;
367 case 10:
368 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0;
369 break;
370 case 11:
371 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0;
372 break;
373 case 12:
374 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0;
375 break;
376 case 15:
377 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0;
378 break;
379 }
380 break;
381 case SIHOST:
382 *(maddr+SIRESET_CL) = 0;
383 *(maddr+SIINTCL_CL) = 0;
384 break;
385 case SIHOST2:
386 *(maddr+SIPLRESET) = 0x10;
387 switch (sc->sc_irq) {
388 case 11:
389 *(maddr+SIPLIRQ11) = 0x10;
390 break;
391 case 12:
392 *(maddr+SIPLIRQ12) = 0x10;
393 break;
394 case 15:
395 *(maddr+SIPLIRQ15) = 0x10;
396 break;
397 }
398 *(maddr+SIPLIRQCLR) = 0x10;
399 break;
400 default: /* this should _REALLY_ never happen */
e3869ec7 401 kprintf("si%d: Uh, it was supported a second ago...\n", unit);
984263bc
MD		 402 return EINVAL;
403 }
404
405 DELAY(1000000); /* wait around for a second */
406
407 regp = (struct si_reg *)maddr;
408 y = 0;
409 /* wait max of 5 sec for init OK */
410 while (regp->initstat == 0 && y++ < 10) {
411 DELAY(500000);
412 }
413 switch (regp->initstat) {
414 case 0:
e3869ec7 415 kprintf("si%d: startup timeout - aborting\n", unit);
984263bc
MD		 416 sc->sc_type = SIEMPTY;
417 return EINVAL;
418 case 1:
419 if (SI_ISJET(sc->sc_type)) {
420 /* set throttle to 100 times per second */
421 regp->int_count = JET_INT_COUNT;
422 /* rx_intr_count is a NOP in Jet */
423 } else {
424 /* set throttle to 125 times per second */
425 regp->int_count = INT_COUNT;
426 /* rx intr max of 25 times per second */
427 regp->rx_int_count = RXINT_COUNT;
428 }
429 regp->int_pending = 0; /* no intr pending */
430 regp->int_scounter = 0; /* reset counter */
431 break;
432 case 0xff:
433 /*
434 * No modules found, so give up on this one.
435 */
e3869ec7 436 kprintf("si%d: %s - no ports found\n", unit,
984263bc
MD		 437 si_type[sc->sc_type]);
438 return 0;
439 default:
e3869ec7 440 kprintf("si%d: download code version error - initstat %x\n",
984263bc
MD		 441 unit, regp->initstat);
442 return EINVAL;
443 }
444
445 /*
446 * First time around the ports just count them in order
447 * to allocate some memory.
448 */
449 nport = 0;
450 modp = (struct si_module *)(maddr + 0x80);
451 for (;;) {
452 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp));
453 switch (modp->sm_type) {
454 case TA4:
455 DPRINT((0, DBG_DOWNLOAD,
456 "si%d: Found old TA4 module, 4 ports\n",
457 unit));
458 x = 4;
459 break;
460 case TA8:
461 DPRINT((0, DBG_DOWNLOAD,
462 "si%d: Found old TA8 module, 8 ports\n",
463 unit));
464 x = 8;
465 break;
466 case TA4_ASIC:
467 DPRINT((0, DBG_DOWNLOAD,
468 "si%d: Found ASIC TA4 module, 4 ports\n",
469 unit));
470 x = 4;
471 break;
472 case TA8_ASIC:
473 DPRINT((0, DBG_DOWNLOAD,
474 "si%d: Found ASIC TA8 module, 8 ports\n",
475 unit));
476 x = 8;
477 break;
478 case MTA:
479 DPRINT((0, DBG_DOWNLOAD,
480 "si%d: Found CD1400 module, 8 ports\n",
481 unit));
482 x = 8;
483 break;
484 case SXDC:
485 DPRINT((0, DBG_DOWNLOAD,
486 "si%d: Found SXDC module, 8 ports\n",
487 unit));
488 x = 8;
489 break;
490 default:
e3869ec7 491 kprintf("si%d: unknown module type %d\n",
984263bc
MD		 492 unit, modp->sm_type);
493 goto try_next;
494 }
495
496 /* this was limited in firmware and is also a driver issue */
497 if ((nport + x) > SI_MAXPORTPERCARD) {
e3869ec7 498 kprintf("si%d: extra ports ignored\n", unit);
984263bc
MD		 499 goto try_next;
500 }
501
502 nport += x;
503 si_Nports += x;
504 si_Nmodules++;
505
506try_next:
507 if (modp->sm_next == 0)
508 break;
509 modp = (struct si_module *)
510 (maddr + (unsigned)(modp->sm_next & 0x7fff));
511 }
77652cad 512 sc->sc_ports = kmalloc(sizeof(struct si_port) * nport,
20a0f9a3 513 M_DEVBUF, M_WAITOK | M_ZERO);
984263bc 514 sc->sc_nport = nport;
9a5ed89e 515 for (n = 0; n < nport; ++n) {
54607efb 516 callout_init(&sc->sc_ports[n].lstart_ch);
9a5ed89e
MD		 517 callout_init(&sc->sc_ports[n].dtr_ch);
518 }
984263bc
MD		 519
520 /*
521 * allocate tty structures for ports
522 */
efda3bd0 523 tp = kmalloc(sizeof(*tp) * nport, M_DEVBUF, M_WAITOK | M_ZERO);
984263bc
MD		 524 si__tty = tp;
525
526 /*
527 * Scan round the ports again, this time initialising.
528 */
529 pp = sc->sc_ports;
530 nmodule = 0;
531 modp = (struct si_module *)(maddr + 0x80);
532 uart_type = 1000; /* arbitary, > uchar_max */
533 for (;;) {
534 switch (modp->sm_type) {
535 case TA4:
536 nport = 4;
537 break;
538 case TA8:
539 nport = 8;
540 break;
541 case TA4_ASIC:
542 nport = 4;
543 break;
544 case TA8_ASIC:
545 nport = 8;
546 break;
547 case MTA:
548 nport = 8;
549 break;
550 case SXDC:
551 nport = 8;
552 break;
553 default:
554 goto try_next2;
555 }
556 nmodule++;
557 ccbp = (struct si_channel *)((char *)modp + 0x100);
558 if (uart_type == 1000)
559 uart_type = ccbp->type;
560 else if (uart_type != ccbp->type)
e3869ec7 561 kprintf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n",
984263bc
MD		 562 unit, nmodule,
563 ccbp->type, si_modulename(sc->sc_type, ccbp->type),
564 uart_type, si_modulename(sc->sc_type, uart_type));
565
566 for (x = 0; x < nport; x++, pp++, ccbp++) {
567 pp->sp_ccb = ccbp; /* save the address */
568 pp->sp_tty = tp++;
569 pp->sp_pend = IDLE_CLOSE;
570 pp->sp_state = 0; /* internal flag */
571 pp->sp_dtr_wait = 3 * hz;
572 pp->sp_iin.c_iflag = TTYDEF_IFLAG;
573 pp->sp_iin.c_oflag = TTYDEF_OFLAG;
574 pp->sp_iin.c_cflag = TTYDEF_CFLAG;
575 pp->sp_iin.c_lflag = TTYDEF_LFLAG;
576 termioschars(&pp->sp_iin);
577 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed =
fc6d0222 578 TTYDEF_SPEED;
984263bc
MD		 579 pp->sp_iout = pp->sp_iin;
580 }
581try_next2:
582 if (modp->sm_next == 0) {
e3869ec7 583 kprintf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n",
984263bc
MD		 584 unit,
585 sc->sc_typename,
586 sc->sc_nport,
587 nmodule,
588 uart_type,
589 si_modulename(sc->sc_type, uart_type));
590 break;
591 }
592 modp = (struct si_module *)
593 (maddr + (unsigned)(modp->sm_next & 0x7fff));
594 }
595 if (done_chartimes == 0) {
596 for (spt = chartimes ; spt->sp_speed != -1; spt++) {
597 if ((spt->sp_code /= hz) == 0)
598 spt->sp_code = 1;
599 }
600 done_chartimes = 1;
601 }
602
984263bc
MD		 603 for (x = 0; x < sc->sc_nport; x++) {
604 /* sync with the manuals that start at 1 */
605 y = x + 1 + unit * (1 << SI_CARDSHIFT);
fef8985e
MD		 606 make_dev(&si_ops, x, 0, 0, 0600, "ttyA%02d", y);
607 make_dev(&si_ops, x + 0x00080, 0, 0, 0600, "cuaA%02d", y);
608 make_dev(&si_ops, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y);
609 make_dev(&si_ops, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y);
610 make_dev(&si_ops, x + 0x20000, 0, 0, 0600, "ttylA%02d", y);
611 make_dev(&si_ops, x + 0x20080, 0, 0, 0600, "cualA%02d", y);
984263bc 612 }
fef8985e 613 make_dev(&si_ops, 0x40000, 0, 0, 0600, "si_control");
984263bc
MD		 614 return (0);
615}
616
617static int
fef8985e 618siopen(struct dev_open_args *ap)
984263bc 619{
b13267a5 620 cdev_t dev = ap->a_head.a_dev;
8d77660e 621 int error;
984263bc
MD		 622 int card, port;
623 struct si_softc *sc;
624 struct tty *tp;
625 volatile struct si_channel *ccbp;
626 struct si_port *pp;
627 int mynor = minor(dev);
628
629 /* quickly let in /dev/si_control */
630 if (IS_CONTROLDEV(mynor)) {
895c1f85 631 if ((error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0)))
984263bc
MD		 632 return(error);
633 return(0);
634 }
635
636 card = SI_CARD(mynor);
637 sc = devclass_get_softc(si_devclass, card);
638 if (sc == NULL)
639 return (ENXIO);
640
641 if (sc->sc_type == SIEMPTY) {
642 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n",
643 card, sc->sc_typename));
644 return(ENXIO);
645 }
646
647 port = SI_PORT(mynor);
648 if (port >= sc->sc_nport) {
649 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n",
650 card, sc->sc_nport));
651 return(ENXIO);
652 }
653
654#ifdef POLL
655 /*
656 * We've now got a device, so start the poller.
657 */
658 if (init_finished == 0) {
9a5ed89e 659 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
984263bc
MD		 660 init_finished = 1;
661 }
662#endif
663
664 /* initial/lock device */
665 if (IS_STATE(mynor)) {
666 return(0);
667 }
668
669 pp = sc->sc_ports + port;
670 tp = pp->sp_tty; /* the "real" tty */
671 dev->si_tty = tp;
672 ccbp = pp->sp_ccb; /* Find control block */
fef8985e
MD		 673 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x)\n",
674 devtoname(dev), ap->a_oflags, ap->a_devtype));
984263bc 675
8d77660e 676 crit_enter(); /* Keep others out */
984263bc
MD		 677 error = 0;
678
679open_top:
680 while (pp->sp_state & SS_DTR_OFF) {
377d4740 681 error = tsleep(&pp->sp_dtr_wait, PCATCH, "sidtr", 0);
984263bc
MD		 682 if (error != 0)
683 goto out;
684 }
685
686 if (tp->t_state & TS_ISOPEN) {
687 /*
688 * The device is open, so everything has been initialised.
689 * handle conflicts.
690 */
691 if (IS_CALLOUT(mynor)) {
692 if (!pp->sp_active_out) {
693 error = EBUSY;
694 goto out;
695 }
696 } else {
697 if (pp->sp_active_out) {
fef8985e 698 if (ap->a_oflags & O_NONBLOCK) {
984263bc
MD		 699 error = EBUSY;
700 goto out;
701 }
702 error = tsleep(&pp->sp_active_out,
377d4740 703 PCATCH, "sibi", 0);
984263bc
MD		 704 if (error != 0)
705 goto out;
706 goto open_top;
707 }
708 }
709 if (tp->t_state & TS_XCLUDE &&
895c1f85 710 priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) {
984263bc
MD		 711 DPRINT((pp, DBG_OPEN|DBG_FAIL,
712 "already open and EXCLUSIVE set\n"));
713 error = EBUSY;
714 goto out;
715 }
716 } else {
717 /*
718 * The device isn't open, so there are no conflicts.
719 * Initialize it. Avoid sleep... :-)
720 */
721 DPRINT((pp, DBG_OPEN, "first open\n"));
722 tp->t_oproc = si_start;
723 tp->t_stop = si_stop;
724 tp->t_param = siparam;
725 tp->t_dev = dev;
726 tp->t_termios = mynor & SI_CALLOUT_MASK
727 ? pp->sp_iout : pp->sp_iin;
728
729 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
730
731 ++pp->sp_wopeners; /* in case of sleep in siparam */
732
733 error = siparam(tp, &tp->t_termios);
734
735 --pp->sp_wopeners;
736 if (error != 0)
737 goto out;
738 /* XXX: we should goto_top if siparam slept */
739
740 /* set initial DCD state */
741 pp->sp_last_hi_ip = ccbp->hi_ip;
742 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) {
743 (*linesw[tp->t_line].l_modem)(tp, 1);
744 }
745 }
746
747 /* whoops! we beat the close! */
748 if (pp->sp_state & SS_CLOSING) {
749 /* try and stop it from proceeding to bash the hardware */
750 pp->sp_state &= ~SS_CLOSING;
751 }
752
753 /*
754 * Wait for DCD if necessary
755 */
756 if (!(tp->t_state & TS_CARR_ON) &&
757 !IS_CALLOUT(mynor) &&
758 !(tp->t_cflag & CLOCAL) &&
fef8985e 759 !(ap->a_oflags & O_NONBLOCK)) {
984263bc
MD		 760 ++pp->sp_wopeners;
761 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n"));
377d4740 762 error = tsleep(TSA_CARR_ON(tp), PCATCH, "sidcd", 0);
984263bc
MD		 763 --pp->sp_wopeners;
764 if (error != 0)
765 goto out;
766 goto open_top;
767 }
768
769 error = (*linesw[tp->t_line].l_open)(dev, tp);
770 si_disc_optim(tp, &tp->t_termios, pp);
771 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor))
772 pp->sp_active_out = TRUE;
773
774 pp->sp_state |= SS_OPEN; /* made it! */
775
776out:
8d77660e 777 crit_exit();
984263bc
MD		 778
779 DPRINT((pp, DBG_OPEN, "leaving siopen\n"));
780
781 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0)
782 sihardclose(pp);
783
784 return(error);
785}
786
787static int
fef8985e 788siclose(struct dev_close_args *ap)
984263bc 789{
b13267a5 790 cdev_t dev = ap->a_head.a_dev;
984263bc
MD		 791 struct si_port *pp;
792 struct tty *tp;
984263bc
MD		 793 int error = 0;
794 int mynor = minor(dev);
795
796 if (IS_SPECIAL(mynor))
797 return(0);
798
8d77660e 799 crit_enter();
984263bc
MD		 800
801 pp = MINOR2PP(mynor);
802 tp = pp->sp_tty;
803
fef8985e
MD		 804 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x) sp_state:%x\n",
805 devtoname(dev), ap->a_fflag, ap->a_devtype, pp->sp_state));
984263bc
MD		 806
807 /* did we sleep and loose a race? */
808 if (pp->sp_state & SS_CLOSING) {
809 /* error = ESOMETING? */
810 goto out;
811 }
812
813 /* begin race detection.. */
814 pp->sp_state |= SS_CLOSING;
815
816 si_write_enable(pp, 0); /* block writes for ttywait() */
817
818 /* THIS MAY SLEEP IN TTYWAIT!!! */
fef8985e 819 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
984263bc
MD		 820
821 si_write_enable(pp, 1);
822
823 /* did we sleep and somebody started another open? */
824 if (!(pp->sp_state & SS_CLOSING)) {
825 /* error = ESOMETING? */
826 goto out;
827 }
828 /* ok. we are now still on the right track.. nuke the hardware */
829
830 if (pp->sp_state & SS_LSTART) {
54607efb 831 callout_stop(&pp->lstart_ch);
984263bc
MD		 832 pp->sp_state &= ~SS_LSTART;
833 }
834
835 si_stop(tp, FREAD | FWRITE);
836
837 sihardclose(pp);
838 ttyclose(tp);
839 pp->sp_state &= ~SS_OPEN;
840
841out:
842 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n"));
8d77660e 843 crit_exit();
984263bc
MD		 844 return(error);
845}
846
847static void
848sihardclose(struct si_port *pp)
849{
984263bc
MD		 850 struct tty *tp;
851 volatile struct si_channel *ccbp;
852
8d77660e 853 crit_enter();
984263bc
MD		 854
855 tp = pp->sp_tty;
856 ccbp = pp->sp_ccb; /* Find control block */
857 if (tp->t_cflag & HUPCL ||
858 (!pp->sp_active_out &&
859 !(ccbp->hi_ip & IP_DCD) &&
860 !(pp->sp_iin.c_cflag && CLOCAL)) ||
861 !(tp->t_state & TS_ISOPEN)) {
862
863 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
864 (void) si_command(pp, FCLOSE, SI_NOWAIT);
865
866 if (pp->sp_dtr_wait != 0) {
9a5ed89e
MD		 867 callout_reset(&pp->dtr_ch, pp->sp_dtr_wait,
868 sidtrwakeup, pp);
984263bc
MD		 869 pp->sp_state |= SS_DTR_OFF;
870 }
871
872 }
873 pp->sp_active_out = FALSE;
874 wakeup((caddr_t)&pp->sp_active_out);
875 wakeup(TSA_CARR_ON(tp));
876
8d77660e 877 crit_exit();
984263bc
MD		 878}
879
880
881/*
882 * called at splsoftclock()...
883 */
884static void
885sidtrwakeup(void *chan)
886{
887 struct si_port *pp;
984263bc 888
8d77660e 889 crit_enter();
984263bc
MD		 890
891 pp = (struct si_port *)chan;
892 pp->sp_state &= ~SS_DTR_OFF;
893 wakeup(&pp->sp_dtr_wait);
894
8d77660e 895 crit_exit();
984263bc
MD		 896}
897
898static int
fef8985e 899siwrite(struct dev_write_args *ap)
984263bc 900{
b13267a5 901 cdev_t dev = ap->a_head.a_dev;
984263bc
MD		 902 struct si_port *pp;
903 struct tty *tp;
904 int error = 0;
905 int mynor = minor(dev);
984263bc
MD		 906
907 if (IS_SPECIAL(mynor)) {
908 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n"));
909 return(ENODEV);
910 }
911 pp = MINOR2PP(mynor);
912 tp = pp->sp_tty;
fef8985e 913 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), ap->a_uio, ap->a_ioflag));
984263bc 914
8d77660e 915 crit_enter();
984263bc
MD		 916 /*
917 * If writes are currently blocked, wait on the "real" tty
918 */
919 while (pp->sp_state & SS_BLOCKWRITE) {
920 pp->sp_state |= SS_WAITWRITE;
921 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n"));
377d4740 922 if ((error = ttysleep(tp, (caddr_t)pp, PCATCH,
984263bc
MD		 923 "siwrite", tp->t_timeout))) {
924 if (error == EWOULDBLOCK)
925 error = EIO;
926 goto out;
927 }
928 }
929
fef8985e 930 error = (*linesw[tp->t_line].l_write)(tp, ap->a_uio, ap->a_ioflag);
984263bc 931out:
8d77660e 932 crit_exit();
984263bc
MD		 933 return (error);
934}
935
936
937static int
fef8985e 938siioctl(struct dev_ioctl_args *ap)
984263bc 939{
b13267a5 940 cdev_t dev = ap->a_head.a_dev;
fef8985e
MD		 941 caddr_t data = ap->a_data;
942 u_long cmd = ap->a_cmd;
984263bc
MD		 943 struct si_port *pp;
944 struct tty *tp;
945 int error;
946 int mynor = minor(dev);
984263bc
MD		 947 int blocked = 0;
948#if defined(COMPAT_43)
949 u_long oldcmd;
950 struct termios term;
951#endif
952
953 if (IS_SI_IOCTL(cmd))
fef8985e 954 return(si_Sioctl(dev, cmd, data, ap->a_fflag, ap->a_cred));
984263bc
MD		 955
956 pp = MINOR2PP(mynor);
957 tp = pp->sp_tty;
958
959 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n",
fef8985e 960 devtoname(dev), cmd, data, ap->a_fflag));
984263bc
MD		 961 if (IS_STATE(mynor)) {
962 struct termios *ct;
963
964 switch (mynor & SI_STATE_MASK) {
965 case SI_INIT_STATE_MASK:
966 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin;
967 break;
968 case SI_LOCK_STATE_MASK:
969 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin;
970 break;
971 default:
972 return (ENODEV);
973 }
974 switch (cmd) {
975 case TIOCSETA:
895c1f85 976 error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0);
984263bc
MD		 977 if (error != 0)
978 return (error);
979 *ct = *(struct termios *)data;
980 return (0);
981 case TIOCGETA:
982 *(struct termios *)data = *ct;
983 return (0);
984 case TIOCGETD:
985 *(int *)data = TTYDISC;
986 return (0);
987 case TIOCGWINSZ:
988 bzero(data, sizeof(struct winsize));
989 return (0);
990 default:
991 return (ENOTTY);
992 }
993 }
994 /*
995 * Do the old-style ioctl compat routines...
996 */
997#if defined(COMPAT_43)
998 term = tp->t_termios;
999 oldcmd = cmd;
1000 error = ttsetcompat(tp, &cmd, data, &term);
1001 if (error != 0)
1002 return (error);
1003 if (cmd != oldcmd)
1004 data = (caddr_t)&term;
1005#endif
1006 /*
1007 * Do the initial / lock state business
1008 */
1009 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
1010 int cc;
1011 struct termios *dt = (struct termios *)data;
1012 struct termios *lt = mynor & SI_CALLOUT_MASK
1013 ? &pp->sp_lout : &pp->sp_lin;
1014
1015 dt->c_iflag = (tp->t_iflag & lt->c_iflag) |
1016 (dt->c_iflag & ~lt->c_iflag);
1017 dt->c_oflag = (tp->t_oflag & lt->c_oflag) |
1018 (dt->c_oflag & ~lt->c_oflag);
1019 dt->c_cflag = (tp->t_cflag & lt->c_cflag) |
1020 (dt->c_cflag & ~lt->c_cflag);
1021 dt->c_lflag = (tp->t_lflag & lt->c_lflag) |
1022 (dt->c_lflag & ~lt->c_lflag);
1023 for (cc = 0; cc < NCCS; ++cc)
1024 if (lt->c_cc[cc] != 0)
1025 dt->c_cc[cc] = tp->t_cc[cc];
1026 if (lt->c_ispeed != 0)
1027 dt->c_ispeed = tp->t_ispeed;
1028 if (lt->c_ospeed != 0)
1029 dt->c_ospeed = tp->t_ospeed;
1030 }
1031
1032 /*
1033 * Block user-level writes to give the ttywait()
1034 * a chance to completely drain for commands
1035 * that require the port to be in a quiescent state.
1036 */
1037 switch (cmd) {
1038 case TIOCSETAW:
1039 case TIOCSETAF:
1040 case TIOCDRAIN:
1041#ifdef COMPAT_43
1042 case TIOCSETP:
1043#endif
1044 blocked++; /* block writes for ttywait() and siparam() */
1045 si_write_enable(pp, 0);
1046 }
1047
fef8985e
MD		 1048 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data,
1049 ap->a_fflag, ap->a_cred);
984263bc
MD		 1050 if (error != ENOIOCTL)
1051 goto out;
1052
8d77660e 1053 crit_enter();
984263bc 1054
fef8985e 1055 error = ttioctl(tp, cmd, data, ap->a_fflag);
984263bc
MD		 1056 si_disc_optim(tp, &tp->t_termios, pp);
1057 if (error != ENOIOCTL) {
8d77660e 1058 crit_exit();
984263bc
MD		 1059 goto out;
1060 }
1061
1062 error = 0;
1063 switch (cmd) {
1064 case TIOCSBRK:
1065 si_command(pp, SBREAK, SI_WAIT);
1066 break;
1067 case TIOCCBRK:
1068 si_command(pp, EBREAK, SI_WAIT);
1069 break;
1070 case TIOCSDTR:
1071 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1072 break;
1073 case TIOCCDTR:
1074 (void) si_modem(pp, SET, 0);
1075 break;
1076 case TIOCMSET:
1077 (void) si_modem(pp, SET, *(int *)data);
1078 break;
1079 case TIOCMBIS:
1080 (void) si_modem(pp, BIS, *(int *)data);
1081 break;
1082 case TIOCMBIC:
1083 (void) si_modem(pp, BIC, *(int *)data);
1084 break;
1085 case TIOCMGET:
1086 *(int *)data = si_modem(pp, GET, 0);
1087 break;
1088 case TIOCMSDTRWAIT:
1089 /* must be root since the wait applies to following logins */
895c1f85 1090 error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0);
984263bc
MD		 1091 if (error == 0)
1092 pp->sp_dtr_wait = *(int *)data * hz / 100;
1093 break;
1094 case TIOCMGDTRWAIT:
1095 *(int *)data = pp->sp_dtr_wait * 100 / hz;
1096 break;
1097 default:
1098 error = ENOTTY;
1099 }
8d77660e 1100 crit_exit();
984263bc
MD		 1101
1102out:
1103 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error));
1104 if (blocked)
1105 si_write_enable(pp, 1);
1106 return(error);
1107}
1108
1109/*
1110 * Handle the Specialix ioctls. All MUST be called via the CONTROL device
1111 */
1112static int
b13267a5 1113si_Sioctl(cdev_t dev, u_long cmd, caddr_t data, int flag, struct ucred *cred)
984263bc
MD		 1114{
1115 struct si_softc *xsc;
1116 struct si_port *xpp;
1117 volatile struct si_reg *regp;
1118 struct si_tcsi *dp;
1119 struct si_pstat *sps;
1120 int *ip, error = 0;
984263bc
MD		 1121 int card, port;
1122 int mynor = minor(dev);
1123
1124 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n",
1125 devtoname(dev), cmd, data, flag));
1126
1127#if 1
1128 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT));
1129 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB));
1130 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY));
1131#endif
1132
1133 if (!IS_CONTROLDEV(mynor)) {
1134 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n"));
1135 return(ENODEV);
1136 }
1137
8d77660e 1138 crit_enter(); /* better safe than sorry */
984263bc
MD		 1139
1140 ip = (int *)data;
1141
895c1f85 1142#define SUCHECK if ((error = priv_check_cred(cred, PRIV_ROOT, 0))) goto out
984263bc
MD		 1143
1144 switch (cmd) {
1145 case TCSIPORTS:
1146 *ip = si_Nports;
1147 goto out;
1148 case TCSIMODULES:
1149 *ip = si_Nmodules;
1150 goto out;
1151 case TCSISDBG_ALL:
1152 SUCHECK;
1153 si_debug = *ip;
1154 goto out;
1155 case TCSIGDBG_ALL:
1156 *ip = si_debug;
1157 goto out;
1158 default:
1159 /*
1160 * Check that a controller for this port exists
1161 */
1162
1163 /* may also be a struct si_pstat, a superset of si_tcsi */
1164
1165 dp = (struct si_tcsi *)data;
1166 sps = (struct si_pstat *)data;
1167 card = dp->tc_card;
1168 xsc = devclass_get_softc(si_devclass, card); /* check.. */
1169 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
1170 error = ENOENT;
1171 goto out;
1172 }
1173 /*
1174 * And check that a port exists
1175 */
1176 port = dp->tc_port;
1177 if (port < 0 || port >= xsc->sc_nport) {
1178 error = ENOENT;
1179 goto out;
1180 }
1181 xpp = xsc->sc_ports + port;
1182 regp = (struct si_reg *)xsc->sc_maddr;
1183 }
1184
1185 switch (cmd) {
1186 case TCSIDEBUG:
1187#ifdef SI_DEBUG
1188 SUCHECK;
1189 if (xpp->sp_debug)
1190 xpp->sp_debug = 0;
1191 else {
1192 xpp->sp_debug = DBG_ALL;
1193 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
1194 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
1195 }
1196 break;
1197#else
1198 error = ENODEV;
1199 goto out;
1200#endif
1201 case TCSISDBG_LEVEL:
1202 case TCSIGDBG_LEVEL:
1203#ifdef SI_DEBUG
1204 if (cmd == TCSIGDBG_LEVEL) {
1205 dp->tc_dbglvl = xpp->sp_debug;
1206 } else {
1207 SUCHECK;
1208 xpp->sp_debug = dp->tc_dbglvl;
1209 }
1210 break;
1211#else
1212 error = ENODEV;
1213 goto out;
1214#endif
1215 case TCSIGRXIT:
1216 dp->tc_int = regp->rx_int_count;
1217 break;
1218 case TCSIRXIT:
1219 SUCHECK;
1220 regp->rx_int_count = dp->tc_int;
1221 break;
1222 case TCSIGIT:
1223 dp->tc_int = regp->int_count;
1224 break;
1225 case TCSIIT:
1226 SUCHECK;
1227 regp->int_count = dp->tc_int;
1228 break;
1229 case TCSISTATE:
1230 dp->tc_int = xpp->sp_ccb->hi_ip;
1231 break;
1232 /* these next three use a different structure */
1233 case TCSI_PORT:
1234 SUCHECK;
1235 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
1236 break;
1237 case TCSI_CCB:
1238 SUCHECK;
1239 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
1240 break;
1241 case TCSI_TTY:
1242 SUCHECK;
1243 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty));
1244 break;
1245 default:
1246 error = EINVAL;
1247 goto out;
1248 }
1249out:
8d77660e 1250 crit_exit();
984263bc
MD		 1251 return(error); /* success */
1252}
1253
1254/*
1255 * siparam() : Configure line params
1256 * called at spltty();
1257 * this may sleep, does not flush, nor wait for drain, nor block writes
1258 * caller must arrange this if it's important..
1259 */
1260static int
1261siparam(struct tty *tp, struct termios *t)
1262{
1263 struct si_port *pp = TP2PP(tp);
1264 volatile struct si_channel *ccbp;
8d77660e 1265 int cflag, iflag, oflag, lflag;
984263bc
MD		 1266 int error = 0; /* shutup gcc */
1267 int ispeed = 0; /* shutup gcc */
1268 int ospeed = 0; /* shutup gcc */
1269 BYTE val;
1270
1271 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
1272 cflag = t->c_cflag;
1273 iflag = t->c_iflag;
1274 oflag = t->c_oflag;
1275 lflag = t->c_lflag;
1276 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
1277 oflag, cflag, iflag, lflag));
1278
1279 /* XXX - if Jet host and SXDC module, use extended baud rates */
1280
1281 /* if not hung up.. */
1282 if (t->c_ospeed != 0) {
1283 /* translate baud rate to firmware values */
1284 ospeed = ttspeedtab(t->c_ospeed, bdrates);
1285 ispeed = t->c_ispeed ?
1286 ttspeedtab(t->c_ispeed, bdrates) : ospeed;
1287
1288 /* enforce legit baud rate */
1289 if (ospeed < 0 || ispeed < 0)
1290 return (EINVAL);
1291 }
1292
8d77660e 1293 crit_enter();
984263bc
MD		 1294
1295 ccbp = pp->sp_ccb;
1296
1297 /* ========== set hi_break ========== */
1298 val = 0;
1299 if (iflag & IGNBRK) /* Breaks */
1300 val |= BR_IGN;
1301 if (iflag & BRKINT) /* Interrupt on break? */
1302 val |= BR_INT;
1303 if (iflag & PARMRK) /* Parity mark? */
1304 val |= BR_PARMRK;
1305 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
1306 val |= BR_PARIGN;
1307 ccbp->hi_break = val;
1308
1309 /* ========== set hi_csr ========== */
1310 /* if not hung up.. */
1311 if (t->c_ospeed != 0) {
1312 /* Set I/O speeds */
1313 val = (ispeed << 4) | ospeed;
1314 }
1315 ccbp->hi_csr = val;
1316
1317 /* ========== set hi_mr2 ========== */
1318 val = 0;
1319 if (cflag & CSTOPB) /* Stop bits */
1320 val |= MR2_2_STOP;
1321 else
1322 val |= MR2_1_STOP;
1323 /*
1324 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1325 * a DCE, hence the reverse sense of RTS and CTS
1326 */
1327 /* Output Flow - RTS must be raised before data can be sent */
1328 if (cflag & CCTS_OFLOW)
1329 val |= MR2_RTSCONT;
1330
1331 ccbp->hi_mr2 = val;
1332
1333 /* ========== set hi_mr1 ========== */
1334 val = 0;
1335 if (!(cflag & PARENB)) /* Parity */
1336 val |= MR1_NONE;
1337 else
1338 val |= MR1_WITH;
1339 if (cflag & PARODD)
1340 val |= MR1_ODD;
1341
1342 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1343 val |= MR1_8_BITS;
1344 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1345 val |= MR1_7_BITS;
1346 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1347 val |= MR1_6_BITS;
1348 } else { /* Must be 5 */
1349 val |= MR1_5_BITS;
1350 }
1351 /*
1352 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1353 * a DCE, hence the reverse sense of RTS and CTS
1354 */
1355 /* Input Flow - CTS is raised when port is ready to receive data */
1356 if (cflag & CRTS_IFLOW)
1357 val |= MR1_CTSCONT;
1358
1359 ccbp->hi_mr1 = val;
1360
1361 /* ========== set hi_mask ========== */
1362 val = 0xff;
1363 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1364 val &= 0xFF;
1365 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1366 val &= 0x7F;
1367 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1368 val &= 0x3F;
1369 } else { /* Must be 5 */
1370 val &= 0x1F;
1371 }
1372 if (iflag & ISTRIP)
1373 val &= 0x7F;
1374
1375 ccbp->hi_mask = val;
1376
1377 /* ========== set hi_prtcl ========== */
1378 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
1379 if (iflag & IXANY)
1380 val |= SP_TANY;
1381 if (iflag & IXON)
1382 val |= SP_TXEN;
1383 if (iflag & IXOFF)
1384 val |= SP_RXEN;
1385 if (iflag & INPCK)
1386 val |= SP_PAEN;
1387
1388 ccbp->hi_prtcl = val;
1389
1390
1391 /* ========== set hi_{rx|tx}{on|off} ========== */
1392 /* XXX: the card TOTALLY shields us from the flow control... */
1393 ccbp->hi_txon = t->c_cc[VSTART];
1394 ccbp->hi_txoff = t->c_cc[VSTOP];
1395
1396 ccbp->hi_rxon = t->c_cc[VSTART];
1397 ccbp->hi_rxoff = t->c_cc[VSTOP];
1398
1399 /* ========== send settings to the card ========== */
1400 /* potential sleep here */
1401 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */
1402 si_command(pp, LOPEN, SI_WAIT); /* open it */
1403 else
1404 si_command(pp, CONFIG, SI_WAIT); /* change params */
1405
1406 /* ========== set DTR etc ========== */
1407 /* Hangup if ospeed == 0 */
1408 if (t->c_ospeed == 0) {
1409 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
1410 } else {
1411 /*
1412 * If the previous speed was 0, may need to re-enable
1413 * the modem signals
1414 */
1415 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1416 }
1417
1418 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n",
1419 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break));
1420
8d77660e 1421 crit_exit();
984263bc
MD		 1422 return(error);
1423}
1424
1425/*
1426 * Enable or Disable the writes to this channel...
1427 * "state" -> enabled = 1; disabled = 0;
1428 */
1429static void
1430si_write_enable(struct si_port *pp, int state)
1431{
984263bc 1432
8d77660e 1433 crit_enter();
984263bc
MD		 1434
1435 if (state) {
1436 pp->sp_state &= ~SS_BLOCKWRITE;
1437 if (pp->sp_state & SS_WAITWRITE) {
1438 pp->sp_state &= ~SS_WAITWRITE;
1439 /* thunder away! */
1440 wakeup((caddr_t)pp);
1441 }
1442 } else {
1443 pp->sp_state |= SS_BLOCKWRITE;
1444 }
1445
8d77660e 1446 crit_exit();
984263bc
MD		 1447}
1448
1449/*
1450 * Set/Get state of modem control lines.
1451 * Due to DCE-like behaviour of the adapter, some signals need translation:
1452 * TIOCM_DTR DSR
1453 * TIOCM_RTS CTS
1454 */
1455static int
1456si_modem(struct si_port *pp, enum si_mctl cmd, int bits)
1457{
1458 volatile struct si_channel *ccbp;
1459 int x;
1460
1461 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits));
1462 ccbp = pp->sp_ccb; /* Find channel address */
1463 switch (cmd) {
1464 case GET:
1465 x = ccbp->hi_ip;
1466 bits = TIOCM_LE;
1467 if (x & IP_DCD) bits |= TIOCM_CAR;
1468 if (x & IP_DTR) bits |= TIOCM_DTR;
1469 if (x & IP_RTS) bits |= TIOCM_RTS;
1470 if (x & IP_RI) bits |= TIOCM_RI;
1471 return(bits);
1472 case SET:
1473 ccbp->hi_op &= ~(OP_DSR|OP_CTS);
1474 /* fall through */
1475 case BIS:
1476 x = 0;
1477 if (bits & TIOCM_DTR)
1478 x |= OP_DSR;
1479 if (bits & TIOCM_RTS)
1480 x |= OP_CTS;
1481 ccbp->hi_op |= x;
1482 break;
1483 case BIC:
1484 if (bits & TIOCM_DTR)
1485 ccbp->hi_op &= ~OP_DSR;
1486 if (bits & TIOCM_RTS)
1487 ccbp->hi_op &= ~OP_CTS;
1488 }
1489 return 0;
1490}
1491
1492/*
1493 * Handle change of modem state
1494 */
1495static void
1496si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1497{
1498 /* if a modem dev */
1499 if (hi_ip & IP_DCD) {
1500 if (!(pp->sp_last_hi_ip & IP_DCD)) {
1501 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n",
1502 tp->t_line));
1503 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
1504 }
1505 } else {
1506 if (pp->sp_last_hi_ip & IP_DCD) {
1507 DPRINT((pp, DBG_INTR, "modem carr off\n"));
1508 if ((*linesw[tp->t_line].l_modem)(tp, 0))
1509 (void) si_modem(pp, SET, 0);
1510 }
1511 }
1512 pp->sp_last_hi_ip = hi_ip;
1513
1514}
1515
1516/*
1517 * Poller to catch missed interrupts.
1518 *
1519 * Note that the SYSV Specialix drivers poll at 100 times per second to get
1520 * better response. We could really use a "periodic" version timeout(). :-)
1521 */
1522#ifdef POLL
1523static void
1524si_poll(void *nothing)
1525{
1526 struct si_softc *sc;
1527 int i;
1528 volatile struct si_reg *regp;
1529 struct si_port *pp;
8d77660e 1530 int lost, port;
984263bc
MD		 1531
1532 DPRINT((0, DBG_POLL, "si_poll()\n"));
8d77660e 1533 crit_enter();
984263bc
MD		 1534 if (in_intr)
1535 goto out;
1536 lost = 0;
1537 for (i = 0; i < si_numunits; i++) {
1538 sc = devclass_get_softc(si_devclass, i);
1539 if (sc == NULL || sc->sc_type == SIEMPTY)
1540 continue;
1541 regp = (struct si_reg *)sc->sc_maddr;
1542
1543 /*
1544 * See if there has been a pending interrupt for 2 seconds
1545 * or so. The test (int_scounter >= 200) won't correspond
1546 * to 2 seconds if int_count gets changed.
1547 */
1548 if (regp->int_pending != 0) {
1549 if (regp->int_scounter >= 200 &&
1550 regp->initstat == 1) {
e3869ec7 1551 kprintf("si%d: lost intr\n", i);
984263bc
MD		 1552 lost++;
1553 }
1554 } else {
1555 regp->int_scounter = 0;
1556 }
1557
1558 /*
1559 * gripe about no input flow control..
1560 */
1561 pp = sc->sc_ports;
1562 for (port = 0; port < sc->sc_nport; pp++, port++) {
1563 if (pp->sp_delta_overflows > 0) {
e3869ec7 1564 kprintf("si%d: %d tty level buffer overflows\n",
984263bc
MD		 1565 i, pp->sp_delta_overflows);
1566 pp->sp_delta_overflows = 0;
1567 }
1568 }
1569 }
1570 if (lost || si_realpoll)
1571 si_intr(NULL); /* call intr with fake vector */
1572out:
8d77660e 1573 crit_exit();
984263bc 1574
9a5ed89e 1575 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
984263bc
MD		 1576}
1577#endif /* ifdef POLL */
1578
1579/*
1580 * The interrupt handler polls ALL ports on ALL adapters each time
1581 * it is called.
1582 */
1583
1584static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1585static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1586
1587void
1588si_intr(void *arg)
1589{
1590 struct si_softc *sc;
1591 struct si_port *pp;
1592 volatile struct si_channel *ccbp;
1593 struct tty *tp;
1594 volatile caddr_t maddr;
1595 BYTE op, ip;
1596 int x, card, port, n, i, isopen;
1597 volatile BYTE *z;
1598 BYTE c;
1599
1600 sc = arg;
1601
1602 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1603 if (in_intr)
1604 return;
1605 in_intr = 1;
1606
1607 /*
1608 * When we get an int we poll all the channels and do ALL pending
1609 * work, not just the first one we find. This allows all cards to
1610 * share the same vector.
1611 *
1612 * XXX - But if we're sharing the vector with something that's NOT
1613 * a SI/XIO/SX card, we may be making more work for ourselves.
1614 */
1615 for (card = 0; card < si_numunits; card++) {
1616 sc = devclass_get_softc(si_devclass, card);
1617 if (sc == NULL || sc->sc_type == SIEMPTY)
1618 continue;
1619
1620 /*
1621 * First, clear the interrupt
1622 */
1623 switch(sc->sc_type) {
1624 case SIHOST:
1625 maddr = sc->sc_maddr;
1626 ((volatile struct si_reg *)maddr)->int_pending = 0;
1627 /* flag nothing pending */
1628 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
1629 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
1630 break;
1631 case SIHOST2:
1632 maddr = sc->sc_maddr;
1633 ((volatile struct si_reg *)maddr)->int_pending = 0;
1634 *(maddr+SIPLIRQCLR) = 0x00;
1635 *(maddr+SIPLIRQCLR) = 0x10;
1636 break;
1637 case SIPCI:
1638 maddr = sc->sc_maddr;
1639 ((volatile struct si_reg *)maddr)->int_pending = 0;
1640 *(maddr+SIPCIINTCL) = 0x0;
1641 break;
1642 case SIJETPCI: /* fall through to JETISA case */
1643 case SIJETISA:
1644 maddr = sc->sc_maddr;
1645 ((volatile struct si_reg *)maddr)->int_pending = 0;
1646 *(maddr+SIJETINTCL) = 0x0;
1647 break;
1648 case SIEISA:
1649 maddr = sc->sc_maddr;
1650 ((volatile struct si_reg *)maddr)->int_pending = 0;
1651 (void)inb(sc->sc_iobase + 3);
1652 break;
1653 case SIEMPTY:
1654 default:
1655 continue;
1656 }
1657 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1658
1659 /*
1660 * check each port
1661 */
1662 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1663 pp++, port++) {
1664 ccbp = pp->sp_ccb;
1665 tp = pp->sp_tty;
1666
1667 /*
1668 * See if a command has completed ?
1669 */
1670 if (ccbp->hi_stat != pp->sp_pend) {
1671 DPRINT((pp, DBG_INTR,
1672 "si_intr hi_stat = 0x%x, pend = %d\n",
1673 ccbp->hi_stat, pp->sp_pend));
1674 switch(pp->sp_pend) {
1675 case LOPEN:
1676 case MPEND:
1677 case MOPEN:
1678 case CONFIG:
1679 case SBREAK:
1680 case EBREAK:
1681 pp->sp_pend = ccbp->hi_stat;
1682 /* sleeping in si_command */
1683 wakeup(&pp->sp_state);
1684 break;
1685 default:
1686 pp->sp_pend = ccbp->hi_stat;
1687 }
1688 }
1689
1690 /*
1691 * Continue on if it's closed
1692 */
1693 if (ccbp->hi_stat == IDLE_CLOSE) {
1694 continue;
1695 }
1696
1697 /*
1698 * Do modem state change if not a local device
1699 */
1700 si_modem_state(pp, tp, ccbp->hi_ip);
1701
1702 /*
1703 * Check to see if we should 'receive' characters.
1704 */
1705 if (tp->t_state & TS_CONNECTED &&
1706 tp->t_state & TS_ISOPEN)
1707 isopen = 1;
1708 else
1709 isopen = 0;
1710
1711 /*
1712 * Do input break processing
1713 */
1714 if (ccbp->hi_state & ST_BREAK) {
1715 if (isopen) {
1716 (*linesw[tp->t_line].l_rint)(TTY_BI, tp);
1717 }
1718 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1719 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1720 }
1721
1722 /*
1723 * Do RX stuff - if not open then dump any characters.
1724 * XXX: This is VERY messy and needs to be cleaned up.
1725 *
1726 * XXX: can we leave data in the host adapter buffer
1727 * when the clists are full? That may be dangerous
1728 * if the user cannot get an interrupt signal through.
1729 */
1730
1731 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
1732
1733 if (!isopen) {
1734 ccbp->hi_rxopos = ccbp->hi_rxipos;
1735 goto end_rx;
1736 }
1737
1738 /*
1739 * If the tty input buffers are blocked, stop emptying
1740 * the incoming buffers and let the auto flow control
1741 * assert..
1742 */
1743 if (tp->t_state & TS_TBLOCK) {
1744 goto end_rx;
1745 }
1746
1747 /*
1748 * Process read characters if not skipped above
1749 */
1750 op = ccbp->hi_rxopos;
1751 ip = ccbp->hi_rxipos;
1752 c = ip - op;
1753 if (c == 0) {
1754 goto end_rx;
1755 }
1756
1757 n = c & 0xff;
1758 if (n > 250)
1759 n = 250;
1760
1761 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1762 n, op, ip));
1763
1764 /*
1765 * Suck characters out of host card buffer into the
1766 * "input staging buffer" - so that we dont leave the
1767 * host card in limbo while we're possibly echoing
1768 * characters and possibly flushing input inside the
1769 * ldisc l_rint() routine.
1770 */
1771 if (n <= SI_BUFFERSIZE - op) {
1772
1773 DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
1774 z = ccbp->hi_rxbuf + op;
1775 si_vbcopy(z, si_rxbuf, n);
1776
1777 op += n;
1778 } else {
1779 x = SI_BUFFERSIZE - op;
1780
1781 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
1782 z = ccbp->hi_rxbuf + op;
1783 si_vbcopy(z, si_rxbuf, x);
1784
1785 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
1786 n - x));
1787 z = ccbp->hi_rxbuf;
1788 si_vbcopy(z, si_rxbuf + x, n - x);
1789
1790 op += n;
1791 }
1792
1793 /* clear collected characters from buffer */
1794 ccbp->hi_rxopos = op;
1795
1796 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1797 n, op, ip));
1798
1799 /*
1800 * at this point...
1801 * n = number of chars placed in si_rxbuf
1802 */
1803
1804 /*
1805 * Avoid the grotesquely inefficient lineswitch
1806 * routine (ttyinput) in "raw" mode. It usually
1807 * takes about 450 instructions (that's without
1808 * canonical processing or echo!). slinput is
1809 * reasonably fast (usually 40 instructions
1810 * plus call overhead).
1811 */
1812 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1813
1814 /* block if the driver supports it */
1815 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER &&
1816 (tp->t_cflag & CRTS_IFLOW ||
1817 tp->t_iflag & IXOFF) &&
1818 !(tp->t_state & TS_TBLOCK))
1819 ttyblock(tp);
1820
1821 tk_nin += n;
1822 tk_rawcc += n;
1823 tp->t_rawcc += n;
1824
1825 pp->sp_delta_overflows +=
1826 b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
1827
1828 ttwakeup(tp);
1829 if (tp->t_state & TS_TTSTOP &&
1830 (tp->t_iflag & IXANY ||
1831 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1832 tp->t_state &= ~TS_TTSTOP;
1833 tp->t_lflag &= ~FLUSHO;
1834 si_start(tp);
1835 }
1836 } else {
1837 /*
1838 * It'd be nice to not have to go through the
1839 * function call overhead for each char here.
1840 * It'd be nice to block input it, saving a
1841 * loop here and the call/return overhead.
1842 */
1843 for(x = 0; x < n; x++) {
1844 i = si_rxbuf[x];
1845 if ((*linesw[tp->t_line].l_rint)(i, tp)
1846 == -1) {
1847 pp->sp_delta_overflows++;
1848 }
1849 /*
1850 * doesn't seem to be much point doing
1851 * this here.. this driver has no
1852 * softtty processing! ??
1853 */
1854 if (pp->sp_hotchar && i == pp->sp_hotchar) {
1855 setsofttty();
1856 }
1857 }
1858 }
1859 goto more_rx; /* try for more until RXbuf is empty */
1860
1861 end_rx: /* XXX: Again, sorry about the gotos.. :-) */
1862
1863 /*
1864 * Do TX stuff
1865 */
1866 (*linesw[tp->t_line].l_start)(tp);
1867
1868 } /* end of for (all ports on this controller) */
1869 } /* end of for (all controllers) */
1870
1871 in_intr = 0;
1872 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1873}
1874
1875/*
1876 * Nudge the transmitter...
1877 *
1878 * XXX: I inherited some funny code here. It implies the host card only
1879 * interrupts when the transmit buffer reaches the low-water-mark, and does
1880 * not interrupt when it's actually hits empty. In some cases, we have
1881 * processes waiting for complete drain, and we need to simulate an interrupt
1882 * about when we think the buffer is going to be empty (and retry if not).
1883 * I really am not certain about this... I *need* the hardware manuals.
1884 */
1885static void
1886si_start(struct tty *tp)
1887{
1888 struct si_port *pp;
1889 volatile struct si_channel *ccbp;
1890 struct clist *qp;
1891 BYTE ipos;
1892 int nchar;
8d77660e 1893 int count, n, amount, buffer_full;
984263bc 1894
8d77660e 1895 crit_enter();
984263bc
MD		 1896
1897 qp = &tp->t_outq;
1898 pp = TP2PP(tp);
1899
1900 DPRINT((pp, DBG_ENTRY|DBG_START,
1901 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n",
1902 tp, tp->t_state, pp->sp_state, qp->c_cc));
1903
1904 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
1905 goto out;
1906
1907 buffer_full = 0;
1908 ccbp = pp->sp_ccb;
1909
1910 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1911 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count));
1912
1913 while ((nchar = qp->c_cc) > 0) {
1914 if ((BYTE)count >= 255) {
1915 buffer_full++;
1916 break;
1917 }
1918 amount = min(nchar, (255 - (BYTE)count));
1919 ipos = (unsigned int)ccbp->hi_txipos;
1920 n = q_to_b(&tp->t_outq, si_txbuf, amount);
1921 /* will it fit in one lump? */
1922 if ((SI_BUFFERSIZE - ipos) >= n) {
1923 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n);
1924 } else {
1925 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos],
1926 SI_BUFFERSIZE - ipos);
1927 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos),
1928 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos));
1929 }
1930 ccbp->hi_txipos += n;
1931 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1932 }
1933
1934 if (count != 0 && nchar == 0) {
1935 tp->t_state |= TS_BUSY;
1936 } else {
1937 tp->t_state &= ~TS_BUSY;
1938 }
1939
1940 /* wakeup time? */
1941 ttwwakeup(tp);
1942
1943 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n",
1944 (BYTE)count, nchar, tp->t_state));
1945
1946 if (tp->t_state & TS_BUSY)
1947 {
1948 int time;
1949
1950 time = ttspeedtab(tp->t_ospeed, chartimes);
1951
1952 if (time > 0) {
1953 if (time < nchar)
1954 time = nchar / time;
1955 else
1956 time = 2;
1957 } else {
1958 DPRINT((pp, DBG_START,
1959 "bad char time value! %d\n", time));
1960 time = hz/10;
1961 }
1962
1963 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) {
54607efb 1964 callout_stop(&pp->lstart_ch);
984263bc
MD		 1965 } else {
1966 pp->sp_state |= SS_LSTART;
1967 }
1968 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
54607efb 1969 callout_reset(&pp->lstart_ch, time, si_lstart, (void *)pp);
984263bc
MD		 1970 }
1971
1972out:
8d77660e 1973 crit_exit();
984263bc
MD		 1974 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1975}
1976
1977/*
1978 * Note: called at splsoftclock from the timeout code
1979 * This has to deal with two things... cause wakeups while waiting for
1980 * tty drains on last process exit, and call l_start at about the right
1981 * time for protocols like ppp.
1982 */
1983static void
1984si_lstart(void *arg)
1985{
1986 struct si_port *pp = arg;
1987 struct tty *tp;
984263bc
MD		 1988
1989 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
1990 pp, pp->sp_state));
1991
8d77660e 1992 crit_enter();
984263bc
MD		 1993
1994 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) {
8d77660e 1995 crit_exit();
984263bc
MD		 1996 return;
1997 }
1998 pp->sp_state &= ~SS_LSTART;
1999 pp->sp_state |= SS_INLSTART;
2000
2001 tp = pp->sp_tty;
2002
2003 /* deal with the process exit case */
2004 ttwwakeup(tp);
2005
2006 /* nudge protocols - eg: ppp */
2007 (*linesw[tp->t_line].l_start)(tp);
2008
2009 pp->sp_state &= ~SS_INLSTART;
8d77660e 2010 crit_exit();
984263bc
MD		 2011}
2012
2013/*
2014 * Stop output on a line. called at spltty();
2015 */
2016void
2017si_stop(struct tty *tp, int rw)
2018{
2019 volatile struct si_channel *ccbp;
2020 struct si_port *pp;
2021
2022 pp = TP2PP(tp);
2023 ccbp = pp->sp_ccb;
2024
2025 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
2026
2027 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
2028 if (rw & FWRITE) {
2029 /* what level are we meant to be flushing anyway? */
2030 if (tp->t_state & TS_BUSY) {
2031 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT);
2032 tp->t_state &= ~TS_BUSY;
2033 ttwwakeup(tp); /* Bruce???? */
2034 }
2035 }
2036#if 1 /* XXX: this doesn't work right yet.. */
2037 /* XXX: this may have been failing because we used to call l_rint()
2038 * while we were looping based on these two counters. Now, we collect
2039 * the data and then loop stuffing it into l_rint(), making this
2040 * useless. Should we cause this to blow away the staging buffer?
2041 */
2042 if (rw & FREAD) {
2043 ccbp->hi_rxopos = ccbp->hi_rxipos;
2044 }
2045#endif
2046}
2047
2048/*
2049 * Issue a command to the host card CPU.
2050 */
2051
2052static void
2053si_command(struct si_port *pp, int cmd, int waitflag)
2054{
984263bc
MD		 2055 volatile struct si_channel *ccbp = pp->sp_ccb;
2056 int x;
2057
2058 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n",
2059 pp, cmd, waitflag, ccbp->hi_stat));
2060
8d77660e 2061 crit_enter(); /* Keep others out */
984263bc
MD		 2062
2063 /* wait until it's finished what it was doing.. */
2064 /* XXX: sits in IDLE_BREAK until something disturbs it or break
2065 * is turned off. */
2066 while((x = ccbp->hi_stat) != IDLE_OPEN &&
2067 x != IDLE_CLOSE &&
2068 x != IDLE_BREAK &&
2069 x != cmd) {
2070 if (in_intr) { /* Prevent sleep in intr */
2071 DPRINT((pp, DBG_PARAM,
2072 "cmd intr collision - completing %d\trequested %d\n",
2073 x, cmd));
8d77660e 2074 crit_exit();
984263bc 2075 return;
377d4740 2076 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
984263bc 2077 "sicmd1", 1)) {
8d77660e 2078 crit_exit();
984263bc
MD		 2079 return;
2080 }
2081 }
2082 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
2083
2084 /* if there was a pending command, cause a state-change wakeup */
2085 switch(pp->sp_pend) {
2086 case LOPEN:
2087 case MPEND:
2088 case MOPEN:
2089 case CONFIG:
2090 case SBREAK:
2091 case EBREAK:
2092 wakeup(&pp->sp_state);
2093 break;
2094 default:
2095 break;
2096 }
2097
2098 pp->sp_pend = cmd; /* New command pending */
2099 ccbp->hi_stat = cmd; /* Post it */
2100
2101 if (waitflag) {
2102 if (in_intr) { /* If in interrupt handler */
2103 DPRINT((pp, DBG_PARAM,
2104 "attempt to sleep in si_intr - cmd req %d\n",
2105 cmd));
8d77660e 2106 crit_exit();
984263bc
MD		 2107 return;
2108 } else while(ccbp->hi_stat != IDLE_OPEN &&
2109 ccbp->hi_stat != IDLE_BREAK) {
377d4740 2110 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
984263bc
MD		 2111 "sicmd2", 0))
2112 break;
2113 }
2114 }
8d77660e 2115 crit_exit();
984263bc
MD		 2116}
2117
2118static void
2119si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp)
2120{
2121 /*
2122 * XXX can skip a lot more cases if Smarts. Maybe
2123 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we
2124 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state.
2125 */
2126 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) &&
2127 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) &&
2128 (!(t->c_iflag & PARMRK) ||
2129 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) &&
2130 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) &&
2131 linesw[tp->t_line].l_rint == ttyinput)
2132 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2133 else
2134 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2135 pp->sp_hotchar = linesw[tp->t_line].l_hotchar;
2136 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n",
2137 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off",
2138 pp->sp_hotchar));
2139}
2140
2141
2142#ifdef SI_DEBUG
2143
2144void
2145si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
2146{
e2565a42 2147 __va_list ap;
984263bc
MD		 2148
2149 if ((pp == NULL && (si_debug&flags)) ||
2150 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
2151 if (pp != NULL)
e3869ec7 2152 kprintf("%ci%d(%d): ", 's',
984263bc
MD		 2153 (int)SI_CARD(minor(pp->sp_tty->t_dev)),
2154 (int)SI_PORT(minor(pp->sp_tty->t_dev)));
e2565a42 2155 __va_start(ap, fmt);
379210cb 2156 kvprintf(fmt, ap);
e2565a42 2157 __va_end(ap);
984263bc
MD		 2158 }
2159}
2160
2161static char *
2162si_mctl2str(enum si_mctl cmd)
2163{
2164 switch (cmd) {
2165 case GET:
2166 return("GET");
2167 case SET:
2168 return("SET");
2169 case BIS:
2170 return("BIS");
2171 case BIC:
2172 return("BIC");
2173 }
2174 return("BAD");
2175}
2176
2177#endif /* DEBUG */
2178
2179static char *
2180si_modulename(int host_type, int uart_type)
2181{
2182 switch (host_type) {
2183 /* Z280 based cards */
2184 case SIEISA:
2185 case SIHOST2:
2186 case SIHOST:
2187 case SIPCI:
2188 switch (uart_type) {
2189 case 0:
2190 return(" (XIO)");
2191 case 1:
2192 return(" (SI)");
2193 }
2194 break;
2195 /* T225 based hosts */
2196 case SIJETPCI:
2197 case SIJETISA:
2198 switch (uart_type) {
2199 case 0:
2200 return(" (SI)");
2201 case 40:
2202 return(" (XIO)");
2203 case 72:
2204 return(" (SXDC)");
2205 }
2206 break;
2207 }
2208 return("");
2209}
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